diff options
| author | Fabio Alessandrelli <fabio.alessandrelli@gmail.com> | 2019-02-16 17:19:46 +0100 |
|---|---|---|
| committer | Fabio Alessandrelli <fabio.alessandrelli@gmail.com> | 2019-02-20 01:30:32 +0100 |
| commit | 2e495c73d691391c763b79d11ad3c74504a85519 (patch) | |
| tree | d8b40cc435eec65f51260ddd2c2bf18ca2527774 | |
| parent | aa5b99821b23d74eafb49f4b0d2d86fe693a903c (diff) | |
Bump mbedTLS to version 2.16 (LTS version)
112 files changed, 11219 insertions, 3704 deletions
diff --git a/thirdparty/README.md b/thirdparty/README.md index 738835c70a..104d0d264d 100644 --- a/thirdparty/README.md +++ b/thirdparty/README.md @@ -280,15 +280,14 @@ Godot build configurations, check them out when updating. ## mbedtls - Upstream: https://tls.mbed.org/ -- Version: 2.12.0 +- Version: 2.16.0 - License: Apache 2.0 -File extracted from upstream release tarball `mbedtls-2.12.0-apache.tgz`: +File extracted from upstream release tarball `mbedtls-2.16.0-apache.tgz`: - All `*.h` from `include/mbedtls/` to `thirdparty/mbedtls/include/mbedtls/` - All `*.c` from `library/` to `thirdparty/mbedtls/library/` - Applied the patch in `thirdparty/mbedtls/1453.diff` (PR 1453). Soon to be merged upstream. Check it out at next update. - ## miniupnpc - Upstream: https://github.com/miniupnp/miniupnp/tree/master/miniupnpc diff --git a/thirdparty/mbedtls/include/mbedtls/aes.h b/thirdparty/mbedtls/include/mbedtls/aes.h index f6603d5962..b42e564efc 100644 --- a/thirdparty/mbedtls/include/mbedtls/aes.h +++ b/thirdparty/mbedtls/include/mbedtls/aes.h @@ -60,7 +60,11 @@ /* Error codes in range 0x0021-0x0025 */ #define MBEDTLS_ERR_AES_BAD_INPUT_DATA -0x0021 /**< Invalid input data. */ + +/* MBEDTLS_ERR_AES_FEATURE_UNAVAILABLE is deprecated and should not be used. */ #define MBEDTLS_ERR_AES_FEATURE_UNAVAILABLE -0x0023 /**< Feature not available. For example, an unsupported AES key size. */ + +/* MBEDTLS_ERR_AES_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_AES_HW_ACCEL_FAILED -0x0025 /**< AES hardware accelerator failed. */ #if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \ @@ -79,7 +83,7 @@ extern "C" { /** * \brief The AES context-type definition. */ -typedef struct +typedef struct mbedtls_aes_context { int nr; /*!< The number of rounds. */ uint32_t *rk; /*!< AES round keys. */ @@ -98,7 +102,7 @@ mbedtls_aes_context; /** * \brief The AES XTS context-type definition. */ -typedef struct +typedef struct mbedtls_aes_xts_context { mbedtls_aes_context crypt; /*!< The AES context to use for AES block encryption or decryption. */ @@ -117,7 +121,7 @@ typedef struct * It must be the first API called before using * the context. * - * \param ctx The AES context to initialize. + * \param ctx The AES context to initialize. This must not be \c NULL. */ void mbedtls_aes_init( mbedtls_aes_context *ctx ); @@ -125,6 +129,8 @@ void mbedtls_aes_init( mbedtls_aes_context *ctx ); * \brief This function releases and clears the specified AES context. * * \param ctx The AES context to clear. + * If this is \c NULL, this function does nothing. + * Otherwise, the context must have been at least initialized. */ void mbedtls_aes_free( mbedtls_aes_context *ctx ); @@ -135,7 +141,7 @@ void mbedtls_aes_free( mbedtls_aes_context *ctx ); * It must be the first API called before using * the context. * - * \param ctx The AES XTS context to initialize. + * \param ctx The AES XTS context to initialize. This must not be \c NULL. */ void mbedtls_aes_xts_init( mbedtls_aes_xts_context *ctx ); @@ -143,6 +149,8 @@ void mbedtls_aes_xts_init( mbedtls_aes_xts_context *ctx ); * \brief This function releases and clears the specified AES XTS context. * * \param ctx The AES XTS context to clear. + * If this is \c NULL, this function does nothing. + * Otherwise, the context must have been at least initialized. */ void mbedtls_aes_xts_free( mbedtls_aes_xts_context *ctx ); #endif /* MBEDTLS_CIPHER_MODE_XTS */ @@ -151,7 +159,9 @@ void mbedtls_aes_xts_free( mbedtls_aes_xts_context *ctx ); * \brief This function sets the encryption key. * * \param ctx The AES context to which the key should be bound. + * It must be initialized. * \param key The encryption key. + * This must be a readable buffer of size \p keybits bits. * \param keybits The size of data passed in bits. Valid options are: * <ul><li>128 bits</li> * <li>192 bits</li> @@ -167,7 +177,9 @@ int mbedtls_aes_setkey_enc( mbedtls_aes_context *ctx, const unsigned char *key, * \brief This function sets the decryption key. * * \param ctx The AES context to which the key should be bound. + * It must be initialized. * \param key The decryption key. + * This must be a readable buffer of size \p keybits bits. * \param keybits The size of data passed. Valid options are: * <ul><li>128 bits</li> * <li>192 bits</li> @@ -185,8 +197,10 @@ int mbedtls_aes_setkey_dec( mbedtls_aes_context *ctx, const unsigned char *key, * sets the encryption key. * * \param ctx The AES XTS context to which the key should be bound. + * It must be initialized. * \param key The encryption key. This is comprised of the XTS key1 * concatenated with the XTS key2. + * This must be a readable buffer of size \p keybits bits. * \param keybits The size of \p key passed in bits. Valid options are: * <ul><li>256 bits (each of key1 and key2 is a 128-bit key)</li> * <li>512 bits (each of key1 and key2 is a 256-bit key)</li></ul> @@ -203,8 +217,10 @@ int mbedtls_aes_xts_setkey_enc( mbedtls_aes_xts_context *ctx, * sets the decryption key. * * \param ctx The AES XTS context to which the key should be bound. + * It must be initialized. * \param key The decryption key. This is comprised of the XTS key1 * concatenated with the XTS key2. + * This must be a readable buffer of size \p keybits bits. * \param keybits The size of \p key passed in bits. Valid options are: * <ul><li>256 bits (each of key1 and key2 is a 128-bit key)</li> * <li>512 bits (each of key1 and key2 is a 256-bit key)</li></ul> @@ -230,10 +246,13 @@ int mbedtls_aes_xts_setkey_dec( mbedtls_aes_xts_context *ctx, * call to this API with the same context. * * \param ctx The AES context to use for encryption or decryption. + * It must be initialized and bound to a key. * \param mode The AES operation: #MBEDTLS_AES_ENCRYPT or * #MBEDTLS_AES_DECRYPT. - * \param input The 16-Byte buffer holding the input data. - * \param output The 16-Byte buffer holding the output data. + * \param input The buffer holding the input data. + * It must be readable and at least \c 16 Bytes long. + * \param output The buffer where the output data will be written. + * It must be writeable and at least \c 16 Bytes long. * \return \c 0 on success. */ @@ -256,8 +275,8 @@ int mbedtls_aes_crypt_ecb( mbedtls_aes_context *ctx, * mbedtls_aes_setkey_enc() or mbedtls_aes_setkey_dec() must be called * before the first call to this API with the same context. * - * \note This function operates on aligned blocks, that is, the input size - * must be a multiple of the AES block size of 16 Bytes. + * \note This function operates on full blocks, that is, the input size + * must be a multiple of the AES block size of \c 16 Bytes. * * \note Upon exit, the content of the IV is updated so that you can * call the same function again on the next @@ -268,13 +287,17 @@ int mbedtls_aes_crypt_ecb( mbedtls_aes_context *ctx, * * * \param ctx The AES context to use for encryption or decryption. + * It must be initialized and bound to a key. * \param mode The AES operation: #MBEDTLS_AES_ENCRYPT or * #MBEDTLS_AES_DECRYPT. * \param length The length of the input data in Bytes. This must be a - * multiple of the block size (16 Bytes). + * multiple of the block size (\c 16 Bytes). * \param iv Initialization vector (updated after use). + * It must be a readable and writeable buffer of \c 16 Bytes. * \param input The buffer holding the input data. + * It must be readable and of size \p length Bytes. * \param output The buffer holding the output data. + * It must be writeable and of size \p length Bytes. * * \return \c 0 on success. * \return #MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH @@ -302,9 +325,10 @@ int mbedtls_aes_crypt_cbc( mbedtls_aes_context *ctx, * returns #MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH. * * \param ctx The AES XTS context to use for AES XTS operations. + * It must be initialized and bound to a key. * \param mode The AES operation: #MBEDTLS_AES_ENCRYPT or * #MBEDTLS_AES_DECRYPT. - * \param length The length of a data unit in bytes. This can be any + * \param length The length of a data unit in Bytes. This can be any * length between 16 bytes and 2^24 bytes inclusive * (between 1 and 2^20 block cipher blocks). * \param data_unit The address of the data unit encoded as an array of 16 @@ -312,15 +336,15 @@ int mbedtls_aes_crypt_cbc( mbedtls_aes_context *ctx, * is typically the index of the block device sector that * contains the data. * \param input The buffer holding the input data (which is an entire - * data unit). This function reads \p length bytes from \p + * data unit). This function reads \p length Bytes from \p * input. * \param output The buffer holding the output data (which is an entire - * data unit). This function writes \p length bytes to \p + * data unit). This function writes \p length Bytes to \p * output. * * \return \c 0 on success. * \return #MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH if \p length is - * smaller than an AES block in size (16 bytes) or if \p + * smaller than an AES block in size (16 Bytes) or if \p * length is larger than 2^20 blocks (16 MiB). */ int mbedtls_aes_crypt_xts( mbedtls_aes_xts_context *ctx, @@ -356,13 +380,18 @@ int mbedtls_aes_crypt_xts( mbedtls_aes_xts_context *ctx, * * * \param ctx The AES context to use for encryption or decryption. + * It must be initialized and bound to a key. * \param mode The AES operation: #MBEDTLS_AES_ENCRYPT or * #MBEDTLS_AES_DECRYPT. - * \param length The length of the input data. + * \param length The length of the input data in Bytes. * \param iv_off The offset in IV (updated after use). + * It must point to a valid \c size_t. * \param iv The initialization vector (updated after use). + * It must be a readable and writeable buffer of \c 16 Bytes. * \param input The buffer holding the input data. + * It must be readable and of size \p length Bytes. * \param output The buffer holding the output data. + * It must be writeable and of size \p length Bytes. * * \return \c 0 on success. */ @@ -397,12 +426,16 @@ int mbedtls_aes_crypt_cfb128( mbedtls_aes_context *ctx, * * * \param ctx The AES context to use for encryption or decryption. + * It must be initialized and bound to a key. * \param mode The AES operation: #MBEDTLS_AES_ENCRYPT or * #MBEDTLS_AES_DECRYPT * \param length The length of the input data. * \param iv The initialization vector (updated after use). + * It must be a readable and writeable buffer of \c 16 Bytes. * \param input The buffer holding the input data. + * It must be readable and of size \p length Bytes. * \param output The buffer holding the output data. + * It must be writeable and of size \p length Bytes. * * \return \c 0 on success. */ @@ -447,11 +480,16 @@ int mbedtls_aes_crypt_cfb8( mbedtls_aes_context *ctx, * will compromise security. * * \param ctx The AES context to use for encryption or decryption. + * It must be initialized and bound to a key. * \param length The length of the input data. * \param iv_off The offset in IV (updated after use). + * It must point to a valid \c size_t. * \param iv The initialization vector (updated after use). + * It must be a readable and writeable buffer of \c 16 Bytes. * \param input The buffer holding the input data. + * It must be readable and of size \p length Bytes. * \param output The buffer holding the output data. + * It must be writeable and of size \p length Bytes. * * \return \c 0 on success. */ @@ -523,15 +561,21 @@ int mbedtls_aes_crypt_ofb( mbedtls_aes_context *ctx, * securely discarded as soon as it's no longer needed. * * \param ctx The AES context to use for encryption or decryption. + * It must be initialized and bound to a key. * \param length The length of the input data. * \param nc_off The offset in the current \p stream_block, for * resuming within the current cipher stream. The * offset pointer should be 0 at the start of a stream. + * It must point to a valid \c size_t. * \param nonce_counter The 128-bit nonce and counter. + * It must be a readable-writeable buffer of \c 16 Bytes. * \param stream_block The saved stream block for resuming. This is * overwritten by the function. + * It must be a readable-writeable buffer of \c 16 Bytes. * \param input The buffer holding the input data. + * It must be readable and of size \p length Bytes. * \param output The buffer holding the output data. + * It must be writeable and of size \p length Bytes. * * \return \c 0 on success. */ @@ -584,7 +628,7 @@ int mbedtls_internal_aes_decrypt( mbedtls_aes_context *ctx, * \brief Deprecated internal AES block encryption function * without return value. * - * \deprecated Superseded by mbedtls_aes_encrypt_ext() in 2.5.0. + * \deprecated Superseded by mbedtls_internal_aes_encrypt() * * \param ctx The AES context to use for encryption. * \param input Plaintext block. @@ -598,7 +642,7 @@ MBEDTLS_DEPRECATED void mbedtls_aes_encrypt( mbedtls_aes_context *ctx, * \brief Deprecated internal AES block decryption function * without return value. * - * \deprecated Superseded by mbedtls_aes_decrypt_ext() in 2.5.0. + * \deprecated Superseded by mbedtls_internal_aes_decrypt() * * \param ctx The AES context to use for decryption. * \param input Ciphertext block. diff --git a/thirdparty/mbedtls/include/mbedtls/aesni.h b/thirdparty/mbedtls/include/mbedtls/aesni.h index 746baa0e17..0196f49b87 100644 --- a/thirdparty/mbedtls/include/mbedtls/aesni.h +++ b/thirdparty/mbedtls/include/mbedtls/aesni.h @@ -2,6 +2,9 @@ * \file aesni.h * * \brief AES-NI for hardware AES acceleration on some Intel processors + * + * \warning These functions are only for internal use by other library + * functions; you must not call them directly. */ /* * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved @@ -42,7 +45,10 @@ extern "C" { #endif /** - * \brief AES-NI features detection routine + * \brief Internal function to detect the AES-NI feature in CPUs. + * + * \note This function is only for internal use by other library + * functions; you must not call it directly. * * \param what The feature to detect * (MBEDTLS_AESNI_AES or MBEDTLS_AESNI_CLMUL) @@ -52,7 +58,10 @@ extern "C" { int mbedtls_aesni_has_support( unsigned int what ); /** - * \brief AES-NI AES-ECB block en(de)cryption + * \brief Internal AES-NI AES-ECB block encryption and decryption + * + * \note This function is only for internal use by other library + * functions; you must not call it directly. * * \param ctx AES context * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT @@ -62,12 +71,15 @@ int mbedtls_aesni_has_support( unsigned int what ); * \return 0 on success (cannot fail) */ int mbedtls_aesni_crypt_ecb( mbedtls_aes_context *ctx, - int mode, - const unsigned char input[16], - unsigned char output[16] ); + int mode, + const unsigned char input[16], + unsigned char output[16] ); /** - * \brief GCM multiplication: c = a * b in GF(2^128) + * \brief Internal GCM multiplication: c = a * b in GF(2^128) + * + * \note This function is only for internal use by other library + * functions; you must not call it directly. * * \param c Result * \param a First operand @@ -77,21 +89,29 @@ int mbedtls_aesni_crypt_ecb( mbedtls_aes_context *ctx, * elements of GF(2^128) as per the GCM spec. */ void mbedtls_aesni_gcm_mult( unsigned char c[16], - const unsigned char a[16], - const unsigned char b[16] ); + const unsigned char a[16], + const unsigned char b[16] ); /** - * \brief Compute decryption round keys from encryption round keys + * \brief Internal round key inversion. This function computes + * decryption round keys from the encryption round keys. + * + * \note This function is only for internal use by other library + * functions; you must not call it directly. * * \param invkey Round keys for the equivalent inverse cipher * \param fwdkey Original round keys (for encryption) * \param nr Number of rounds (that is, number of round keys minus one) */ void mbedtls_aesni_inverse_key( unsigned char *invkey, - const unsigned char *fwdkey, int nr ); + const unsigned char *fwdkey, + int nr ); /** - * \brief Perform key expansion (for encryption) + * \brief Internal key expansion for encryption + * + * \note This function is only for internal use by other library + * functions; you must not call it directly. * * \param rk Destination buffer where the round keys are written * \param key Encryption key @@ -100,8 +120,8 @@ void mbedtls_aesni_inverse_key( unsigned char *invkey, * \return 0 if successful, or MBEDTLS_ERR_AES_INVALID_KEY_LENGTH */ int mbedtls_aesni_setkey_enc( unsigned char *rk, - const unsigned char *key, - size_t bits ); + const unsigned char *key, + size_t bits ); #ifdef __cplusplus } diff --git a/thirdparty/mbedtls/include/mbedtls/arc4.h b/thirdparty/mbedtls/include/mbedtls/arc4.h index f11fc5be0a..c43f4065f1 100644 --- a/thirdparty/mbedtls/include/mbedtls/arc4.h +++ b/thirdparty/mbedtls/include/mbedtls/arc4.h @@ -36,6 +36,7 @@ #include <stddef.h> +/* MBEDTLS_ERR_ARC4_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_ARC4_HW_ACCEL_FAILED -0x0019 /**< ARC4 hardware accelerator failed. */ #ifdef __cplusplus @@ -53,7 +54,7 @@ extern "C" { * security risk. We recommend considering stronger ciphers instead. * */ -typedef struct +typedef struct mbedtls_arc4_context { int x; /*!< permutation index */ int y; /*!< permutation index */ diff --git a/thirdparty/mbedtls/include/mbedtls/aria.h b/thirdparty/mbedtls/include/mbedtls/aria.h index bae0621b23..1e8956ed13 100644 --- a/thirdparty/mbedtls/include/mbedtls/aria.h +++ b/thirdparty/mbedtls/include/mbedtls/aria.h @@ -39,6 +39,8 @@ #include <stddef.h> #include <stdint.h> +#include "platform_util.h" + #define MBEDTLS_ARIA_ENCRYPT 1 /**< ARIA encryption. */ #define MBEDTLS_ARIA_DECRYPT 0 /**< ARIA decryption. */ @@ -46,9 +48,18 @@ #define MBEDTLS_ARIA_MAX_ROUNDS 16 /**< Maxiumum number of rounds in ARIA. */ #define MBEDTLS_ARIA_MAX_KEYSIZE 32 /**< Maximum size of an ARIA key in bytes. */ -#define MBEDTLS_ERR_ARIA_INVALID_KEY_LENGTH -0x005C /**< Invalid key length. */ -#define MBEDTLS_ERR_ARIA_INVALID_INPUT_LENGTH -0x005E /**< Invalid data input length. */ +#if !defined(MBEDTLS_DEPRECATED_REMOVED) +#define MBEDTLS_ERR_ARIA_INVALID_KEY_LENGTH MBEDTLS_DEPRECATED_NUMERIC_CONSTANT( -0x005C ) +#endif /* !MBEDTLS_DEPRECATED_REMOVED */ +#define MBEDTLS_ERR_ARIA_BAD_INPUT_DATA -0x005C /**< Bad input data. */ + +#define MBEDTLS_ERR_ARIA_INVALID_INPUT_LENGTH -0x005E /**< Invalid data input length. */ + +/* MBEDTLS_ERR_ARIA_FEATURE_UNAVAILABLE is deprecated and should not be used. + */ #define MBEDTLS_ERR_ARIA_FEATURE_UNAVAILABLE -0x005A /**< Feature not available. For example, an unsupported ARIA key size. */ + +/* MBEDTLS_ERR_ARIA_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_ARIA_HW_ACCEL_FAILED -0x0058 /**< ARIA hardware accelerator failed. */ #if !defined(MBEDTLS_ARIA_ALT) @@ -62,7 +73,7 @@ extern "C" { /** * \brief The ARIA context-type definition. */ -typedef struct +typedef struct mbedtls_aria_context { unsigned char nr; /*!< The number of rounds (12, 14 or 16) */ /*! The ARIA round keys. */ @@ -80,14 +91,16 @@ mbedtls_aria_context; * It must be the first API called before using * the context. * - * \param ctx The ARIA context to initialize. + * \param ctx The ARIA context to initialize. This must not be \c NULL. */ void mbedtls_aria_init( mbedtls_aria_context *ctx ); /** * \brief This function releases and clears the specified ARIA context. * - * \param ctx The ARIA context to clear. + * \param ctx The ARIA context to clear. This may be \c NULL, in which + * case this function returns immediately. If it is not \c NULL, + * it must point to an initialized ARIA context. */ void mbedtls_aria_free( mbedtls_aria_context *ctx ); @@ -95,14 +108,16 @@ void mbedtls_aria_free( mbedtls_aria_context *ctx ); * \brief This function sets the encryption key. * * \param ctx The ARIA context to which the key should be bound. - * \param key The encryption key. - * \param keybits The size of data passed in bits. Valid options are: + * This must be initialized. + * \param key The encryption key. This must be a readable buffer + * of size \p keybits Bits. + * \param keybits The size of \p key in Bits. Valid options are: * <ul><li>128 bits</li> * <li>192 bits</li> * <li>256 bits</li></ul> * - * \return \c 0 on success or #MBEDTLS_ERR_ARIA_INVALID_KEY_LENGTH - * on failure. + * \return \c 0 on success. + * \return A negative error code on failure. */ int mbedtls_aria_setkey_enc( mbedtls_aria_context *ctx, const unsigned char *key, @@ -112,13 +127,16 @@ int mbedtls_aria_setkey_enc( mbedtls_aria_context *ctx, * \brief This function sets the decryption key. * * \param ctx The ARIA context to which the key should be bound. - * \param key The decryption key. + * This must be initialized. + * \param key The decryption key. This must be a readable buffer + * of size \p keybits Bits. * \param keybits The size of data passed. Valid options are: * <ul><li>128 bits</li> * <li>192 bits</li> * <li>256 bits</li></ul> * - * \return \c 0 on success, or #MBEDTLS_ERR_ARIA_INVALID_KEY_LENGTH on failure. + * \return \c 0 on success. + * \return A negative error code on failure. */ int mbedtls_aria_setkey_dec( mbedtls_aria_context *ctx, const unsigned char *key, @@ -137,10 +155,12 @@ int mbedtls_aria_setkey_dec( mbedtls_aria_context *ctx, * call to this API with the same context. * * \param ctx The ARIA context to use for encryption or decryption. + * This must be initialized and bound to a key. * \param input The 16-Byte buffer holding the input data. * \param output The 16-Byte buffer holding the output data. * \return \c 0 on success. + * \return A negative error code on failure. */ int mbedtls_aria_crypt_ecb( mbedtls_aria_context *ctx, const unsigned char input[MBEDTLS_ARIA_BLOCKSIZE], @@ -172,16 +192,21 @@ int mbedtls_aria_crypt_ecb( mbedtls_aria_context *ctx, * * * \param ctx The ARIA context to use for encryption or decryption. - * \param mode The ARIA operation: #MBEDTLS_ARIA_ENCRYPT or - * #MBEDTLS_ARIA_DECRYPT. + * This must be initialized and bound to a key. + * \param mode The mode of operation. This must be either + * #MBEDTLS_ARIA_ENCRYPT for encryption, or + * #MBEDTLS_ARIA_DECRYPT for decryption. * \param length The length of the input data in Bytes. This must be a * multiple of the block size (16 Bytes). * \param iv Initialization vector (updated after use). - * \param input The buffer holding the input data. - * \param output The buffer holding the output data. + * This must be a readable buffer of size 16 Bytes. + * \param input The buffer holding the input data. This must + * be a readable buffer of length \p length Bytes. + * \param output The buffer holding the output data. This must + * be a writable buffer of length \p length Bytes. * - * \return \c 0 on success, or #MBEDTLS_ERR_ARIA_INVALID_INPUT_LENGTH - * on failure. + * \return \c 0 on success. + * \return A negative error code on failure. */ int mbedtls_aria_crypt_cbc( mbedtls_aria_context *ctx, int mode, @@ -216,15 +241,22 @@ int mbedtls_aria_crypt_cbc( mbedtls_aria_context *ctx, * * * \param ctx The ARIA context to use for encryption or decryption. - * \param mode The ARIA operation: #MBEDTLS_ARIA_ENCRYPT or - * #MBEDTLS_ARIA_DECRYPT. - * \param length The length of the input data. + * This must be initialized and bound to a key. + * \param mode The mode of operation. This must be either + * #MBEDTLS_ARIA_ENCRYPT for encryption, or + * #MBEDTLS_ARIA_DECRYPT for decryption. + * \param length The length of the input data \p input in Bytes. * \param iv_off The offset in IV (updated after use). + * This must not be larger than 15. * \param iv The initialization vector (updated after use). - * \param input The buffer holding the input data. - * \param output The buffer holding the output data. + * This must be a readable buffer of size 16 Bytes. + * \param input The buffer holding the input data. This must + * be a readable buffer of length \p length Bytes. + * \param output The buffer holding the output data. This must + * be a writable buffer of length \p length Bytes. * * \return \c 0 on success. + * \return A negative error code on failure. */ int mbedtls_aria_crypt_cfb128( mbedtls_aria_context *ctx, int mode, @@ -294,17 +326,24 @@ int mbedtls_aria_crypt_cfb128( mbedtls_aria_context *ctx, * securely discarded as soon as it's no longer needed. * * \param ctx The ARIA context to use for encryption or decryption. - * \param length The length of the input data. - * \param nc_off The offset in the current \p stream_block, for - * resuming within the current cipher stream. The - * offset pointer should be 0 at the start of a stream. - * \param nonce_counter The 128-bit nonce and counter. - * \param stream_block The saved stream block for resuming. This is - * overwritten by the function. - * \param input The buffer holding the input data. - * \param output The buffer holding the output data. - * - * \return \c 0 on success. + * This must be initialized and bound to a key. + * \param length The length of the input data \p input in Bytes. + * \param nc_off The offset in Bytes in the current \p stream_block, + * for resuming within the current cipher stream. The + * offset pointer should be \c 0 at the start of a + * stream. This must not be larger than \c 15 Bytes. + * \param nonce_counter The 128-bit nonce and counter. This must point to + * a read/write buffer of length \c 16 bytes. + * \param stream_block The saved stream block for resuming. This must + * point to a read/write buffer of length \c 16 bytes. + * This is overwritten by the function. + * \param input The buffer holding the input data. This must + * be a readable buffer of length \p length Bytes. + * \param output The buffer holding the output data. This must + * be a writable buffer of length \p length Bytes. + * + * \return \c 0 on success. + * \return A negative error code on failure. */ int mbedtls_aria_crypt_ctr( mbedtls_aria_context *ctx, size_t length, diff --git a/thirdparty/mbedtls/include/mbedtls/asn1write.h b/thirdparty/mbedtls/include/mbedtls/asn1write.h index f76fc807d0..76c1780b59 100644 --- a/thirdparty/mbedtls/include/mbedtls/asn1write.h +++ b/thirdparty/mbedtls/include/mbedtls/asn1write.h @@ -26,191 +26,272 @@ #include "asn1.h" -#define MBEDTLS_ASN1_CHK_ADD(g, f) do { if( ( ret = f ) < 0 ) return( ret ); else \ - g += ret; } while( 0 ) +#define MBEDTLS_ASN1_CHK_ADD(g, f) \ + do { \ + if( ( ret = f ) < 0 ) \ + return( ret ); \ + else \ + g += ret; \ + } while( 0 ) #ifdef __cplusplus extern "C" { #endif /** - * \brief Write a length field in ASN.1 format - * Note: function works backwards in data buffer + * \brief Write a length field in ASN.1 format. * - * \param p reference to current position pointer - * \param start start of the buffer (for bounds-checking) - * \param len the length to write + * \note This function works backwards in data buffer. * - * \return the length written or a negative error code + * \param p The reference to the current position pointer. + * \param start The start of the buffer, for bounds-checking. + * \param len The length value to write. + * + * \return The number of bytes written to \p p on success. + * \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure. */ -int mbedtls_asn1_write_len( unsigned char **p, unsigned char *start, size_t len ); - +int mbedtls_asn1_write_len( unsigned char **p, unsigned char *start, + size_t len ); /** - * \brief Write a ASN.1 tag in ASN.1 format - * Note: function works backwards in data buffer + * \brief Write an ASN.1 tag in ASN.1 format. + * + * \note This function works backwards in data buffer. * - * \param p reference to current position pointer - * \param start start of the buffer (for bounds-checking) - * \param tag the tag to write + * \param p The reference to the current position pointer. + * \param start The start of the buffer, for bounds-checking. + * \param tag The tag to write. * - * \return the length written or a negative error code + * \return The number of bytes written to \p p on success. + * \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure. */ int mbedtls_asn1_write_tag( unsigned char **p, unsigned char *start, - unsigned char tag ); + unsigned char tag ); /** - * \brief Write raw buffer data - * Note: function works backwards in data buffer + * \brief Write raw buffer data. * - * \param p reference to current position pointer - * \param start start of the buffer (for bounds-checking) - * \param buf data buffer to write - * \param size length of the data buffer + * \note This function works backwards in data buffer. * - * \return the length written or a negative error code + * \param p The reference to the current position pointer. + * \param start The start of the buffer, for bounds-checking. + * \param buf The data buffer to write. + * \param size The length of the data buffer. + * + * \return The number of bytes written to \p p on success. + * \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure. */ int mbedtls_asn1_write_raw_buffer( unsigned char **p, unsigned char *start, - const unsigned char *buf, size_t size ); + const unsigned char *buf, size_t size ); #if defined(MBEDTLS_BIGNUM_C) /** - * \brief Write a big number (MBEDTLS_ASN1_INTEGER) in ASN.1 format - * Note: function works backwards in data buffer + * \brief Write a arbitrary-precision number (#MBEDTLS_ASN1_INTEGER) + * in ASN.1 format. + * + * \note This function works backwards in data buffer. * - * \param p reference to current position pointer - * \param start start of the buffer (for bounds-checking) - * \param X the MPI to write + * \param p The reference to the current position pointer. + * \param start The start of the buffer, for bounds-checking. + * \param X The MPI to write. * - * \return the length written or a negative error code + * \return The number of bytes written to \p p on success. + * \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure. */ -int mbedtls_asn1_write_mpi( unsigned char **p, unsigned char *start, const mbedtls_mpi *X ); +int mbedtls_asn1_write_mpi( unsigned char **p, unsigned char *start, + const mbedtls_mpi *X ); #endif /* MBEDTLS_BIGNUM_C */ /** - * \brief Write a NULL tag (MBEDTLS_ASN1_NULL) with zero data in ASN.1 format - * Note: function works backwards in data buffer + * \brief Write a NULL tag (#MBEDTLS_ASN1_NULL) with zero data + * in ASN.1 format. + * + * \note This function works backwards in data buffer. * - * \param p reference to current position pointer - * \param start start of the buffer (for bounds-checking) + * \param p The reference to the current position pointer. + * \param start The start of the buffer, for bounds-checking. * - * \return the length written or a negative error code + * \return The number of bytes written to \p p on success. + * \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure. */ int mbedtls_asn1_write_null( unsigned char **p, unsigned char *start ); /** - * \brief Write an OID tag (MBEDTLS_ASN1_OID) and data in ASN.1 format - * Note: function works backwards in data buffer + * \brief Write an OID tag (#MBEDTLS_ASN1_OID) and data + * in ASN.1 format. * - * \param p reference to current position pointer - * \param start start of the buffer (for bounds-checking) - * \param oid the OID to write - * \param oid_len length of the OID + * \note This function works backwards in data buffer. * - * \return the length written or a negative error code + * \param p The reference to the current position pointer. + * \param start The start of the buffer, for bounds-checking. + * \param oid The OID to write. + * \param oid_len The length of the OID. + * + * \return The number of bytes written to \p p on success. + * \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure. */ int mbedtls_asn1_write_oid( unsigned char **p, unsigned char *start, - const char *oid, size_t oid_len ); + const char *oid, size_t oid_len ); /** - * \brief Write an AlgorithmIdentifier sequence in ASN.1 format - * Note: function works backwards in data buffer + * \brief Write an AlgorithmIdentifier sequence in ASN.1 format. + * + * \note This function works backwards in data buffer. * - * \param p reference to current position pointer - * \param start start of the buffer (for bounds-checking) - * \param oid the OID of the algorithm - * \param oid_len length of the OID - * \param par_len length of parameters, which must be already written. + * \param p The reference to the current position pointer. + * \param start The start of the buffer, for bounds-checking. + * \param oid The OID of the algorithm to write. + * \param oid_len The length of the algorithm's OID. + * \param par_len The length of the parameters, which must be already written. * If 0, NULL parameters are added * - * \return the length written or a negative error code + * \return The number of bytes written to \p p on success. + * \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure. */ -int mbedtls_asn1_write_algorithm_identifier( unsigned char **p, unsigned char *start, - const char *oid, size_t oid_len, - size_t par_len ); +int mbedtls_asn1_write_algorithm_identifier( unsigned char **p, + unsigned char *start, + const char *oid, size_t oid_len, + size_t par_len ); /** - * \brief Write a boolean tag (MBEDTLS_ASN1_BOOLEAN) and value in ASN.1 format - * Note: function works backwards in data buffer + * \brief Write a boolean tag (#MBEDTLS_ASN1_BOOLEAN) and value + * in ASN.1 format. + * + * \note This function works backwards in data buffer. * - * \param p reference to current position pointer - * \param start start of the buffer (for bounds-checking) - * \param boolean 0 or 1 + * \param p The reference to the current position pointer. + * \param start The start of the buffer, for bounds-checking. + * \param boolean The boolean value to write, either \c 0 or \c 1. * - * \return the length written or a negative error code + * \return The number of bytes written to \p p on success. + * \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure. */ -int mbedtls_asn1_write_bool( unsigned char **p, unsigned char *start, int boolean ); +int mbedtls_asn1_write_bool( unsigned char **p, unsigned char *start, + int boolean ); /** - * \brief Write an int tag (MBEDTLS_ASN1_INTEGER) and value in ASN.1 format - * Note: function works backwards in data buffer + * \brief Write an int tag (#MBEDTLS_ASN1_INTEGER) and value + * in ASN.1 format. * - * \param p reference to current position pointer - * \param start start of the buffer (for bounds-checking) - * \param val the integer value + * \note This function works backwards in data buffer. * - * \return the length written or a negative error code + * \param p The reference to the current position pointer. + * \param start The start of the buffer, for bounds-checking. + * \param val The integer value to write. + * + * \return The number of bytes written to \p p on success. + * \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure. */ int mbedtls_asn1_write_int( unsigned char **p, unsigned char *start, int val ); /** - * \brief Write a printable string tag (MBEDTLS_ASN1_PRINTABLE_STRING) and - * value in ASN.1 format - * Note: function works backwards in data buffer + * \brief Write a string in ASN.1 format using a specific + * string encoding tag. + + * \note This function works backwards in data buffer. + * + * \param p The reference to the current position pointer. + * \param start The start of the buffer, for bounds-checking. + * \param tag The string encoding tag to write, e.g. + * #MBEDTLS_ASN1_UTF8_STRING. + * \param text The string to write. + * \param text_len The length of \p text in bytes (which might + * be strictly larger than the number of characters). + * + * \return The number of bytes written to \p p on success. + * \return A negative error code on failure. + */ +int mbedtls_asn1_write_tagged_string( unsigned char **p, unsigned char *start, + int tag, const char *text, + size_t text_len ); + +/** + * \brief Write a string in ASN.1 format using the PrintableString + * string encoding tag (#MBEDTLS_ASN1_PRINTABLE_STRING). + * + * \note This function works backwards in data buffer. + * + * \param p The reference to the current position pointer. + * \param start The start of the buffer, for bounds-checking. + * \param text The string to write. + * \param text_len The length of \p text in bytes (which might + * be strictly larger than the number of characters). + * + * \return The number of bytes written to \p p on success. + * \return A negative error code on failure. + */ +int mbedtls_asn1_write_printable_string( unsigned char **p, + unsigned char *start, + const char *text, size_t text_len ); + +/** + * \brief Write a UTF8 string in ASN.1 format using the UTF8String + * string encoding tag (#MBEDTLS_ASN1_PRINTABLE_STRING). + * + * \note This function works backwards in data buffer. * - * \param p reference to current position pointer - * \param start start of the buffer (for bounds-checking) - * \param text the text to write - * \param text_len length of the text + * \param p The reference to the current position pointer. + * \param start The start of the buffer, for bounds-checking. + * \param text The string to write. + * \param text_len The length of \p text in bytes (which might + * be strictly larger than the number of characters). * - * \return the length written or a negative error code + * \return The number of bytes written to \p p on success. + * \return A negative error code on failure. */ -int mbedtls_asn1_write_printable_string( unsigned char **p, unsigned char *start, - const char *text, size_t text_len ); +int mbedtls_asn1_write_utf8_string( unsigned char **p, unsigned char *start, + const char *text, size_t text_len ); /** - * \brief Write an IA5 string tag (MBEDTLS_ASN1_IA5_STRING) and - * value in ASN.1 format - * Note: function works backwards in data buffer + * \brief Write a string in ASN.1 format using the IA5String + * string encoding tag (#MBEDTLS_ASN1_IA5_STRING). * - * \param p reference to current position pointer - * \param start start of the buffer (for bounds-checking) - * \param text the text to write - * \param text_len length of the text + * \note This function works backwards in data buffer. * - * \return the length written or a negative error code + * \param p The reference to the current position pointer. + * \param start The start of the buffer, for bounds-checking. + * \param text The string to write. + * \param text_len The length of \p text in bytes (which might + * be strictly larger than the number of characters). + * + * \return The number of bytes written to \p p on success. + * \return A negative error code on failure. */ int mbedtls_asn1_write_ia5_string( unsigned char **p, unsigned char *start, - const char *text, size_t text_len ); + const char *text, size_t text_len ); /** - * \brief Write a bitstring tag (MBEDTLS_ASN1_BIT_STRING) and - * value in ASN.1 format - * Note: function works backwards in data buffer + * \brief Write a bitstring tag (#MBEDTLS_ASN1_BIT_STRING) and + * value in ASN.1 format. + * + * \note This function works backwards in data buffer. * - * \param p reference to current position pointer - * \param start start of the buffer (for bounds-checking) - * \param buf the bitstring - * \param bits the total number of bits in the bitstring + * \param p The reference to the current position pointer. + * \param start The start of the buffer, for bounds-checking. + * \param buf The bitstring to write. + * \param bits The total number of bits in the bitstring. * - * \return the length written or a negative error code + * \return The number of bytes written to \p p on success. + * \return A negative error code on failure. */ int mbedtls_asn1_write_bitstring( unsigned char **p, unsigned char *start, - const unsigned char *buf, size_t bits ); + const unsigned char *buf, size_t bits ); /** - * \brief Write an octet string tag (MBEDTLS_ASN1_OCTET_STRING) and - * value in ASN.1 format - * Note: function works backwards in data buffer + * \brief Write an octet string tag (#MBEDTLS_ASN1_OCTET_STRING) + * and value in ASN.1 format. + * + * \note This function works backwards in data buffer. * - * \param p reference to current position pointer - * \param start start of the buffer (for bounds-checking) - * \param buf data buffer to write - * \param size length of the data buffer + * \param p The reference to the current position pointer. + * \param start The start of the buffer, for bounds-checking. + * \param buf The buffer holding the data to write. + * \param size The length of the data buffer \p buf. * - * \return the length written or a negative error code + * \return The number of bytes written to \p p on success. + * \return A negative error code on failure. */ int mbedtls_asn1_write_octet_string( unsigned char **p, unsigned char *start, - const unsigned char *buf, size_t size ); + const unsigned char *buf, size_t size ); /** * \brief Create or find a specific named_data entry for writing in a @@ -218,15 +299,16 @@ int mbedtls_asn1_write_octet_string( unsigned char **p, unsigned char *start, * a new entry is added to the head of the list. * Warning: Destructive behaviour for the val data! * - * \param list Pointer to the location of the head of the list to seek - * through (will be updated in case of a new entry) - * \param oid The OID to look for - * \param oid_len Size of the OID - * \param val Data to store (can be NULL if you want to fill it by hand) - * \param val_len Minimum length of the data buffer needed + * \param list The pointer to the location of the head of the list to seek + * through (will be updated in case of a new entry). + * \param oid The OID to look for. + * \param oid_len The size of the OID. + * \param val The data to store (can be \c NULL if you want to fill + * it by hand). + * \param val_len The minimum length of the data buffer needed. * - * \return NULL if if there was a memory allocation error, or a pointer - * to the new / existing entry. + * \return A pointer to the new / existing entry on success. + * \return \c NULL if if there was a memory allocation error. */ mbedtls_asn1_named_data *mbedtls_asn1_store_named_data( mbedtls_asn1_named_data **list, const char *oid, size_t oid_len, diff --git a/thirdparty/mbedtls/include/mbedtls/bignum.h b/thirdparty/mbedtls/include/mbedtls/bignum.h index 31383b1eb5..141a8e9adf 100644 --- a/thirdparty/mbedtls/include/mbedtls/bignum.h +++ b/thirdparty/mbedtls/include/mbedtls/bignum.h @@ -177,7 +177,7 @@ extern "C" { /** * \brief MPI structure */ -typedef struct +typedef struct mbedtls_mpi { int s; /*!< integer sign */ size_t n; /*!< total # of limbs */ @@ -186,96 +186,115 @@ typedef struct mbedtls_mpi; /** - * \brief Initialize one MPI (make internal references valid) - * This just makes it ready to be set or freed, + * \brief Initialize an MPI context. + * + * This makes the MPI ready to be set or freed, * but does not define a value for the MPI. * - * \param X One MPI to initialize. + * \param X The MPI context to initialize. This must not be \c NULL. */ void mbedtls_mpi_init( mbedtls_mpi *X ); /** - * \brief Unallocate one MPI + * \brief This function frees the components of an MPI context. * - * \param X One MPI to unallocate. + * \param X The MPI context to be cleared. This may be \c NULL, + * in which case this function is a no-op. If it is + * not \c NULL, it must point to an initialized MPI. */ void mbedtls_mpi_free( mbedtls_mpi *X ); /** - * \brief Enlarge to the specified number of limbs + * \brief Enlarge an MPI to the specified number of limbs. * - * This function does nothing if the MPI is already large enough. + * \note This function does nothing if the MPI is + * already large enough. * - * \param X MPI to grow - * \param nblimbs The target number of limbs + * \param X The MPI to grow. It must be initialized. + * \param nblimbs The target number of limbs. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed. + * \return Another negative error code on other kinds of failure. */ int mbedtls_mpi_grow( mbedtls_mpi *X, size_t nblimbs ); /** - * \brief Resize down, keeping at least the specified number of limbs + * \brief This function resizes an MPI downwards, keeping at least the + * specified number of limbs. * * If \c X is smaller than \c nblimbs, it is resized up * instead. * - * \param X MPI to shrink - * \param nblimbs The minimum number of limbs to keep + * \param X The MPI to shrink. This must point to an initialized MPI. + * \param nblimbs The minimum number of limbs to keep. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed * (this can only happen when resizing up). + * \return Another negative error code on other kinds of failure. */ int mbedtls_mpi_shrink( mbedtls_mpi *X, size_t nblimbs ); /** - * \brief Copy the contents of Y into X + * \brief Make a copy of an MPI. + * + * \param X The destination MPI. This must point to an initialized MPI. + * \param Y The source MPI. This must point to an initialized MPI. * - * \param X Destination MPI. It is enlarged if necessary. - * \param Y Source MPI. + * \note The limb-buffer in the destination MPI is enlarged + * if necessary to hold the value in the source MPI. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed. + * \return Another negative error code on other kinds of failure. */ int mbedtls_mpi_copy( mbedtls_mpi *X, const mbedtls_mpi *Y ); /** - * \brief Swap the contents of X and Y + * \brief Swap the contents of two MPIs. * - * \param X First MPI value - * \param Y Second MPI value + * \param X The first MPI. It must be initialized. + * \param Y The second MPI. It must be initialized. */ void mbedtls_mpi_swap( mbedtls_mpi *X, mbedtls_mpi *Y ); /** - * \brief Safe conditional assignement X = Y if assign is 1 + * \brief Perform a safe conditional copy of MPI which doesn't + * reveal whether the condition was true or not. * - * \param X MPI to conditionally assign to - * \param Y Value to be assigned - * \param assign 1: perform the assignment, 0: keep X's original value - * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed, + * \param X The MPI to conditionally assign to. This must point + * to an initialized MPI. + * \param Y The MPI to be assigned from. This must point to an + * initialized MPI. + * \param assign The condition deciding whether to perform the + * assignment or not. Possible values: + * * \c 1: Perform the assignment `X = Y`. + * * \c 0: Keep the original value of \p X. * * \note This function is equivalent to - * if( assign ) mbedtls_mpi_copy( X, Y ); + * `if( assign ) mbedtls_mpi_copy( X, Y );` * except that it avoids leaking any information about whether * the assignment was done or not (the above code may leak * information through branch prediction and/or memory access * patterns analysis). + * + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed. + * \return Another negative error code on other kinds of failure. */ int mbedtls_mpi_safe_cond_assign( mbedtls_mpi *X, const mbedtls_mpi *Y, unsigned char assign ); /** - * \brief Safe conditional swap X <-> Y if swap is 1 + * \brief Perform a safe conditional swap which doesn't + * reveal whether the condition was true or not. * - * \param X First mbedtls_mpi value - * \param Y Second mbedtls_mpi value - * \param assign 1: perform the swap, 0: keep X and Y's original values - * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed, + * \param X The first MPI. This must be initialized. + * \param Y The second MPI. This must be initialized. + * \param assign The condition deciding whether to perform + * the swap or not. Possible values: + * * \c 1: Swap the values of \p X and \p Y. + * * \c 0: Keep the original values of \p X and \p Y. * * \note This function is equivalent to * if( assign ) mbedtls_mpi_swap( X, Y ); @@ -283,415 +302,512 @@ int mbedtls_mpi_safe_cond_assign( mbedtls_mpi *X, const mbedtls_mpi *Y, unsigned * the assignment was done or not (the above code may leak * information through branch prediction and/or memory access * patterns analysis). + * + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed. + * \return Another negative error code on other kinds of failure. + * */ int mbedtls_mpi_safe_cond_swap( mbedtls_mpi *X, mbedtls_mpi *Y, unsigned char assign ); /** - * \brief Set value from integer + * \brief Store integer value in MPI. * - * \param X MPI to set - * \param z Value to use + * \param X The MPI to set. This must be initialized. + * \param z The value to use. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed. + * \return Another negative error code on other kinds of failure. */ int mbedtls_mpi_lset( mbedtls_mpi *X, mbedtls_mpi_sint z ); /** - * \brief Get a specific bit from X + * \brief Get a specific bit from an MPI. * - * \param X MPI to use - * \param pos Zero-based index of the bit in X + * \param X The MPI to query. This must be initialized. + * \param pos Zero-based index of the bit to query. * - * \return Either a 0 or a 1 + * \return \c 0 or \c 1 on success, depending on whether bit \c pos + * of \c X is unset or set. + * \return A negative error code on failure. */ int mbedtls_mpi_get_bit( const mbedtls_mpi *X, size_t pos ); /** - * \brief Set a bit of X to a specific value of 0 or 1 + * \brief Modify a specific bit in an MPI. * - * \note Will grow X if necessary to set a bit to 1 in a not yet - * existing limb. Will not grow if bit should be set to 0 + * \note This function will grow the target MPI if necessary to set a + * bit to \c 1 in a not yet existing limb. It will not grow if + * the bit should be set to \c 0. * - * \param X MPI to use - * \param pos Zero-based index of the bit in X - * \param val The value to set the bit to (0 or 1) + * \param X The MPI to modify. This must be initialized. + * \param pos Zero-based index of the bit to modify. + * \param val The desired value of bit \c pos: \c 0 or \c 1. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed, - * MBEDTLS_ERR_MPI_BAD_INPUT_DATA if val is not 0 or 1 + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed. + * \return Another negative error code on other kinds of failure. */ int mbedtls_mpi_set_bit( mbedtls_mpi *X, size_t pos, unsigned char val ); /** - * \brief Return the number of zero-bits before the least significant - * '1' bit + * \brief Return the number of bits of value \c 0 before the + * least significant bit of value \c 1. + * + * \note This is the same as the zero-based index of + * the least significant bit of value \c 1. * - * Note: Thus also the zero-based index of the least significant '1' bit + * \param X The MPI to query. * - * \param X MPI to use + * \return The number of bits of value \c 0 before the least significant + * bit of value \c 1 in \p X. */ size_t mbedtls_mpi_lsb( const mbedtls_mpi *X ); /** * \brief Return the number of bits up to and including the most - * significant '1' bit' + * significant bit of value \c 1. * - * Note: Thus also the one-based index of the most significant '1' bit + * * \note This is same as the one-based index of the most + * significant bit of value \c 1. * - * \param X MPI to use + * \param X The MPI to query. This must point to an initialized MPI. + * + * \return The number of bits up to and including the most + * significant bit of value \c 1. */ size_t mbedtls_mpi_bitlen( const mbedtls_mpi *X ); /** - * \brief Return the total size in bytes + * \brief Return the total size of an MPI value in bytes. + * + * \param X The MPI to use. This must point to an initialized MPI. * - * \param X MPI to use + * \note The value returned by this function may be less than + * the number of bytes used to store \p X internally. + * This happens if and only if there are trailing bytes + * of value zero. + * + * \return The least number of bytes capable of storing + * the absolute value of \p X. */ size_t mbedtls_mpi_size( const mbedtls_mpi *X ); /** - * \brief Import from an ASCII string + * \brief Import an MPI from an ASCII string. * - * \param X Destination MPI - * \param radix Input numeric base - * \param s Null-terminated string buffer + * \param X The destination MPI. This must point to an initialized MPI. + * \param radix The numeric base of the input string. + * \param s Null-terminated string buffer. * - * \return 0 if successful, or a MBEDTLS_ERR_MPI_XXX error code + * \return \c 0 if successful. + * \return A negative error code on failure. */ int mbedtls_mpi_read_string( mbedtls_mpi *X, int radix, const char *s ); /** - * \brief Export into an ASCII string + * \brief Export an MPI to an ASCII string. * - * \param X Source MPI - * \param radix Output numeric base - * \param buf Buffer to write the string to - * \param buflen Length of buf - * \param olen Length of the string written, including final NUL byte + * \param X The source MPI. This must point to an initialized MPI. + * \param radix The numeric base of the output string. + * \param buf The buffer to write the string to. This must be writable + * buffer of length \p buflen Bytes. + * \param buflen The available size in Bytes of \p buf. + * \param olen The address at which to store the length of the string + * written, including the final \c NULL byte. This must + * not be \c NULL. * - * \return 0 if successful, or a MBEDTLS_ERR_MPI_XXX error code. - * *olen is always updated to reflect the amount - * of data that has (or would have) been written. + * \note You can call this function with `buflen == 0` to obtain the + * minimum required buffer size in `*olen`. * - * \note Call this function with buflen = 0 to obtain the - * minimum required buffer size in *olen. + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL if the target buffer \p buf + * is too small to hold the value of \p X in the desired base. + * In this case, `*olen` is nonetheless updated to contain the + * size of \p buf required for a successful call. + * \return Another negative error code on different kinds of failure. */ int mbedtls_mpi_write_string( const mbedtls_mpi *X, int radix, char *buf, size_t buflen, size_t *olen ); #if defined(MBEDTLS_FS_IO) /** - * \brief Read MPI from a line in an opened file - * - * \param X Destination MPI - * \param radix Input numeric base - * \param fin Input file handle + * \brief Read an MPI from a line in an opened file. * - * \return 0 if successful, MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL if - * the file read buffer is too small or a - * MBEDTLS_ERR_MPI_XXX error code + * \param X The destination MPI. This must point to an initialized MPI. + * \param radix The numeric base of the string representation used + * in the source line. + * \param fin The input file handle to use. This must not be \c NULL. * * \note On success, this function advances the file stream * to the end of the current line or to EOF. * - * The function returns 0 on an empty line. + * The function returns \c 0 on an empty line. * * Leading whitespaces are ignored, as is a - * '0x' prefix for radix 16. + * '0x' prefix for radix \c 16. * + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL if the file read buffer + * is too small. + * \return Another negative error code on failure. */ int mbedtls_mpi_read_file( mbedtls_mpi *X, int radix, FILE *fin ); /** - * \brief Write X into an opened file, or stdout if fout is NULL + * \brief Export an MPI into an opened file. * - * \param p Prefix, can be NULL - * \param X Source MPI - * \param radix Output numeric base - * \param fout Output file handle (can be NULL) + * \param p A string prefix to emit prior to the MPI data. + * For example, this might be a label, or "0x" when + * printing in base \c 16. This may be \c NULL if no prefix + * is needed. + * \param X The source MPI. This must point to an initialized MPI. + * \param radix The numeric base to be used in the emitted string. + * \param fout The output file handle. This may be \c NULL, in which case + * the output is written to \c stdout. * - * \return 0 if successful, or a MBEDTLS_ERR_MPI_XXX error code - * - * \note Set fout == NULL to print X on the console. + * \return \c 0 if successful. + * \return A negative error code on failure. */ -int mbedtls_mpi_write_file( const char *p, const mbedtls_mpi *X, int radix, FILE *fout ); +int mbedtls_mpi_write_file( const char *p, const mbedtls_mpi *X, + int radix, FILE *fout ); #endif /* MBEDTLS_FS_IO */ /** - * \brief Import X from unsigned binary data, big endian + * \brief Import an MPI from unsigned big endian binary data. * - * \param X Destination MPI - * \param buf Input buffer - * \param buflen Input buffer size + * \param X The destination MPI. This must point to an initialized MPI. + * \param buf The input buffer. This must be a readable buffer of length + * \p buflen Bytes. + * \param buflen The length of the input buffer \p p in Bytes. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed. + * \return Another negative error code on different kinds of failure. */ -int mbedtls_mpi_read_binary( mbedtls_mpi *X, const unsigned char *buf, size_t buflen ); +int mbedtls_mpi_read_binary( mbedtls_mpi *X, const unsigned char *buf, + size_t buflen ); /** - * \brief Export X into unsigned binary data, big endian. - * Always fills the whole buffer, which will start with zeros - * if the number is smaller. + * \brief Export an MPI into unsigned big endian binary data + * of fixed size. * - * \param X Source MPI - * \param buf Output buffer - * \param buflen Output buffer size + * \param X The source MPI. This must point to an initialized MPI. + * \param buf The output buffer. This must be a writable buffer of length + * \p buflen Bytes. + * \param buflen The size of the output buffer \p buf in Bytes. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL if buf isn't large enough + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL if \p buf isn't + * large enough to hold the value of \p X. + * \return Another negative error code on different kinds of failure. */ -int mbedtls_mpi_write_binary( const mbedtls_mpi *X, unsigned char *buf, size_t buflen ); +int mbedtls_mpi_write_binary( const mbedtls_mpi *X, unsigned char *buf, + size_t buflen ); /** - * \brief Left-shift: X <<= count + * \brief Perform a left-shift on an MPI: X <<= count * - * \param X MPI to shift - * \param count Amount to shift + * \param X The MPI to shift. This must point to an initialized MPI. + * \param count The number of bits to shift by. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return Another negative error code on different kinds of failure. */ int mbedtls_mpi_shift_l( mbedtls_mpi *X, size_t count ); /** - * \brief Right-shift: X >>= count + * \brief Perform a right-shift on an MPI: X >>= count * - * \param X MPI to shift - * \param count Amount to shift + * \param X The MPI to shift. This must point to an initialized MPI. + * \param count The number of bits to shift by. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return Another negative error code on different kinds of failure. */ int mbedtls_mpi_shift_r( mbedtls_mpi *X, size_t count ); /** - * \brief Compare unsigned values + * \brief Compare the absolute values of two MPIs. * - * \param X Left-hand MPI - * \param Y Right-hand MPI + * \param X The left-hand MPI. This must point to an initialized MPI. + * \param Y The right-hand MPI. This must point to an initialized MPI. * - * \return 1 if |X| is greater than |Y|, - * -1 if |X| is lesser than |Y| or - * 0 if |X| is equal to |Y| + * \return \c 1 if `|X|` is greater than `|Y|`. + * \return \c -1 if `|X|` is lesser than `|Y|`. + * \return \c 0 if `|X|` is equal to `|Y|`. */ int mbedtls_mpi_cmp_abs( const mbedtls_mpi *X, const mbedtls_mpi *Y ); /** - * \brief Compare signed values + * \brief Compare two MPIs. * - * \param X Left-hand MPI - * \param Y Right-hand MPI + * \param X The left-hand MPI. This must point to an initialized MPI. + * \param Y The right-hand MPI. This must point to an initialized MPI. * - * \return 1 if X is greater than Y, - * -1 if X is lesser than Y or - * 0 if X is equal to Y + * \return \c 1 if \p X is greater than \p Y. + * \return \c -1 if \p X is lesser than \p Y. + * \return \c 0 if \p X is equal to \p Y. */ int mbedtls_mpi_cmp_mpi( const mbedtls_mpi *X, const mbedtls_mpi *Y ); /** - * \brief Compare signed values + * \brief Compare an MPI with an integer. * - * \param X Left-hand MPI - * \param z The integer value to compare to + * \param X The left-hand MPI. This must point to an initialized MPI. + * \param z The integer value to compare \p X to. * - * \return 1 if X is greater than z, - * -1 if X is lesser than z or - * 0 if X is equal to z + * \return \c 1 if \p X is greater than \p z. + * \return \c -1 if \p X is lesser than \p z. + * \return \c 0 if \p X is equal to \p z. */ int mbedtls_mpi_cmp_int( const mbedtls_mpi *X, mbedtls_mpi_sint z ); /** - * \brief Unsigned addition: X = |A| + |B| + * \brief Perform an unsigned addition of MPIs: X = |A| + |B| * - * \param X Destination MPI - * \param A Left-hand MPI - * \param B Right-hand MPI + * \param X The destination MPI. This must point to an initialized MPI. + * \param A The first summand. This must point to an initialized MPI. + * \param B The second summand. This must point to an initialized MPI. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return Another negative error code on different kinds of failure. */ -int mbedtls_mpi_add_abs( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B ); +int mbedtls_mpi_add_abs( mbedtls_mpi *X, const mbedtls_mpi *A, + const mbedtls_mpi *B ); /** - * \brief Unsigned subtraction: X = |A| - |B| + * \brief Perform an unsigned subtraction of MPIs: X = |A| - |B| + * + * \param X The destination MPI. This must point to an initialized MPI. + * \param A The minuend. This must point to an initialized MPI. + * \param B The subtrahend. This must point to an initialized MPI. * - * \param X Destination MPI - * \param A Left-hand MPI - * \param B Right-hand MPI + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_NEGATIVE_VALUE if \p B is greater than \p A. + * \return Another negative error code on different kinds of failure. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_NEGATIVE_VALUE if B is greater than A */ -int mbedtls_mpi_sub_abs( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B ); +int mbedtls_mpi_sub_abs( mbedtls_mpi *X, const mbedtls_mpi *A, + const mbedtls_mpi *B ); /** - * \brief Signed addition: X = A + B + * \brief Perform a signed addition of MPIs: X = A + B * - * \param X Destination MPI - * \param A Left-hand MPI - * \param B Right-hand MPI + * \param X The destination MPI. This must point to an initialized MPI. + * \param A The first summand. This must point to an initialized MPI. + * \param B The second summand. This must point to an initialized MPI. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return Another negative error code on different kinds of failure. */ -int mbedtls_mpi_add_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B ); +int mbedtls_mpi_add_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, + const mbedtls_mpi *B ); /** - * \brief Signed subtraction: X = A - B + * \brief Perform a signed subtraction of MPIs: X = A - B * - * \param X Destination MPI - * \param A Left-hand MPI - * \param B Right-hand MPI + * \param X The destination MPI. This must point to an initialized MPI. + * \param A The minuend. This must point to an initialized MPI. + * \param B The subtrahend. This must point to an initialized MPI. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return Another negative error code on different kinds of failure. */ -int mbedtls_mpi_sub_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B ); +int mbedtls_mpi_sub_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, + const mbedtls_mpi *B ); /** - * \brief Signed addition: X = A + b + * \brief Perform a signed addition of an MPI and an integer: X = A + b * - * \param X Destination MPI - * \param A Left-hand MPI - * \param b The integer value to add + * \param X The destination MPI. This must point to an initialized MPI. + * \param A The first summand. This must point to an initialized MPI. + * \param b The second summand. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return Another negative error code on different kinds of failure. */ -int mbedtls_mpi_add_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_sint b ); +int mbedtls_mpi_add_int( mbedtls_mpi *X, const mbedtls_mpi *A, + mbedtls_mpi_sint b ); /** - * \brief Signed subtraction: X = A - b + * \brief Perform a signed subtraction of an MPI and an integer: + * X = A - b * - * \param X Destination MPI - * \param A Left-hand MPI - * \param b The integer value to subtract + * \param X The destination MPI. This must point to an initialized MPI. + * \param A The minuend. This must point to an initialized MPI. + * \param b The subtrahend. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return Another negative error code on different kinds of failure. */ -int mbedtls_mpi_sub_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_sint b ); +int mbedtls_mpi_sub_int( mbedtls_mpi *X, const mbedtls_mpi *A, + mbedtls_mpi_sint b ); /** - * \brief Baseline multiplication: X = A * B + * \brief Perform a multiplication of two MPIs: X = A * B + * + * \param X The destination MPI. This must point to an initialized MPI. + * \param A The first factor. This must point to an initialized MPI. + * \param B The second factor. This must point to an initialized MPI. * - * \param X Destination MPI - * \param A Left-hand MPI - * \param B Right-hand MPI + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return Another negative error code on different kinds of failure. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed */ -int mbedtls_mpi_mul_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B ); +int mbedtls_mpi_mul_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, + const mbedtls_mpi *B ); /** - * \brief Baseline multiplication: X = A * b + * \brief Perform a multiplication of an MPI with an unsigned integer: + * X = A * b * - * \param X Destination MPI - * \param A Left-hand MPI - * \param b The unsigned integer value to multiply with + * \param X The destination MPI. This must point to an initialized MPI. + * \param A The first factor. This must point to an initialized MPI. + * \param b The second factor. * - * \note b is unsigned + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return Another negative error code on different kinds of failure. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed */ -int mbedtls_mpi_mul_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_uint b ); +int mbedtls_mpi_mul_int( mbedtls_mpi *X, const mbedtls_mpi *A, + mbedtls_mpi_uint b ); /** - * \brief Division by mbedtls_mpi: A = Q * B + R + * \brief Perform a division with remainder of two MPIs: + * A = Q * B + R * - * \param Q Destination MPI for the quotient - * \param R Destination MPI for the rest value - * \param A Left-hand MPI - * \param B Right-hand MPI + * \param Q The destination MPI for the quotient. + * This may be \c NULL if the value of the + * quotient is not needed. + * \param R The destination MPI for the remainder value. + * This may be \c NULL if the value of the + * remainder is not needed. + * \param A The dividend. This must point to an initialized MPi. + * \param B The divisor. This must point to an initialized MPI. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed, - * MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if B == 0 - * - * \note Either Q or R can be NULL. + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed. + * \return #MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if \p B equals zero. + * \return Another negative error code on different kinds of failure. */ -int mbedtls_mpi_div_mpi( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, const mbedtls_mpi *B ); +int mbedtls_mpi_div_mpi( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, + const mbedtls_mpi *B ); /** - * \brief Division by int: A = Q * b + R - * - * \param Q Destination MPI for the quotient - * \param R Destination MPI for the rest value - * \param A Left-hand MPI - * \param b Integer to divide by + * \brief Perform a division with remainder of an MPI by an integer: + * A = Q * b + R * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed, - * MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if b == 0 + * \param Q The destination MPI for the quotient. + * This may be \c NULL if the value of the + * quotient is not needed. + * \param R The destination MPI for the remainder value. + * This may be \c NULL if the value of the + * remainder is not needed. + * \param A The dividend. This must point to an initialized MPi. + * \param b The divisor. * - * \note Either Q or R can be NULL. + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed. + * \return #MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if \p b equals zero. + * \return Another negative error code on different kinds of failure. */ -int mbedtls_mpi_div_int( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, mbedtls_mpi_sint b ); +int mbedtls_mpi_div_int( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, + mbedtls_mpi_sint b ); /** - * \brief Modulo: R = A mod B + * \brief Perform a modular reduction. R = A mod B * - * \param R Destination MPI for the rest value - * \param A Left-hand MPI - * \param B Right-hand MPI + * \param R The destination MPI for the residue value. + * This must point to an initialized MPI. + * \param A The MPI to compute the residue of. + * This must point to an initialized MPI. + * \param B The base of the modular reduction. + * This must point to an initialized MPI. + * + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return #MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if \p B equals zero. + * \return #MBEDTLS_ERR_MPI_NEGATIVE_VALUE if \p B is negative. + * \return Another negative error code on different kinds of failure. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed, - * MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if B == 0, - * MBEDTLS_ERR_MPI_NEGATIVE_VALUE if B < 0 */ -int mbedtls_mpi_mod_mpi( mbedtls_mpi *R, const mbedtls_mpi *A, const mbedtls_mpi *B ); +int mbedtls_mpi_mod_mpi( mbedtls_mpi *R, const mbedtls_mpi *A, + const mbedtls_mpi *B ); /** - * \brief Modulo: r = A mod b + * \brief Perform a modular reduction with respect to an integer. + * r = A mod b * - * \param r Destination mbedtls_mpi_uint - * \param A Left-hand MPI - * \param b Integer to divide by + * \param r The address at which to store the residue. + * This must not be \c NULL. + * \param A The MPI to compute the residue of. + * This must point to an initialized MPi. + * \param b The integer base of the modular reduction. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed, - * MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if b == 0, - * MBEDTLS_ERR_MPI_NEGATIVE_VALUE if b < 0 + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return #MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if \p b equals zero. + * \return #MBEDTLS_ERR_MPI_NEGATIVE_VALUE if \p b is negative. + * \return Another negative error code on different kinds of failure. */ -int mbedtls_mpi_mod_int( mbedtls_mpi_uint *r, const mbedtls_mpi *A, mbedtls_mpi_sint b ); +int mbedtls_mpi_mod_int( mbedtls_mpi_uint *r, const mbedtls_mpi *A, + mbedtls_mpi_sint b ); /** - * \brief Sliding-window exponentiation: X = A^E mod N - * - * \param X Destination MPI - * \param A Left-hand MPI - * \param E Exponent MPI - * \param N Modular MPI - * \param _RR Speed-up MPI used for recalculations + * \brief Perform a sliding-window exponentiation: X = A^E mod N * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed, - * MBEDTLS_ERR_MPI_BAD_INPUT_DATA if N is negative or even or - * if E is negative + * \param X The destination MPI. This must point to an initialized MPI. + * \param A The base of the exponentiation. + * This must point to an initialized MPI. + * \param E The exponent MPI. This must point to an initialized MPI. + * \param N The base for the modular reduction. This must point to an + * initialized MPI. + * \param _RR A helper MPI depending solely on \p N which can be used to + * speed-up multiple modular exponentiations for the same value + * of \p N. This may be \c NULL. If it is not \c NULL, it must + * point to an initialized MPI. If it hasn't been used after + * the call to mbedtls_mpi_init(), this function will compute + * the helper value and store it in \p _RR for reuse on + * subsequent calls to this function. Otherwise, the function + * will assume that \p _RR holds the helper value set by a + * previous call to mbedtls_mpi_exp_mod(), and reuse it. + * + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return #MBEDTLS_ERR_MPI_BAD_INPUT_DATA if \c N is negative or + * even, or if \c E is negative. + * \return Another negative error code on different kinds of failures. * - * \note _RR is used to avoid re-computing R*R mod N across - * multiple calls, which speeds up things a bit. It can - * be set to NULL if the extra performance is unneeded. */ -int mbedtls_mpi_exp_mod( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *E, const mbedtls_mpi *N, mbedtls_mpi *_RR ); +int mbedtls_mpi_exp_mod( mbedtls_mpi *X, const mbedtls_mpi *A, + const mbedtls_mpi *E, const mbedtls_mpi *N, + mbedtls_mpi *_RR ); /** - * \brief Fill an MPI X with size bytes of random + * \brief Fill an MPI with a number of random bytes. * - * \param X Destination MPI - * \param size Size in bytes - * \param f_rng RNG function - * \param p_rng RNG parameter + * \param X The destination MPI. This must point to an initialized MPI. + * \param size The number of random bytes to generate. + * \param f_rng The RNG function to use. This must not be \c NULL. + * \param p_rng The RNG parameter to be passed to \p f_rng. This may be + * \c NULL if \p f_rng doesn't need a context argument. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return Another negative error code on failure. * - * \note The bytes obtained from the PRNG are interpreted + * \note The bytes obtained from the RNG are interpreted * as a big-endian representation of an MPI; this can * be relevant in applications like deterministic ECDSA. */ @@ -700,61 +816,130 @@ int mbedtls_mpi_fill_random( mbedtls_mpi *X, size_t size, void *p_rng ); /** - * \brief Greatest common divisor: G = gcd(A, B) - * - * \param G Destination MPI - * \param A Left-hand MPI - * \param B Right-hand MPI - * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed - */ -int mbedtls_mpi_gcd( mbedtls_mpi *G, const mbedtls_mpi *A, const mbedtls_mpi *B ); - -/** - * \brief Modular inverse: X = A^-1 mod N + * \brief Compute the greatest common divisor: G = gcd(A, B) * - * \param X Destination MPI - * \param A Left-hand MPI - * \param N Right-hand MPI + * \param G The destination MPI. This must point to an initialized MPI. + * \param A The first operand. This must point to an initialized MPI. + * \param B The second operand. This must point to an initialized MPI. * - * \return 0 if successful, - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed, - * MBEDTLS_ERR_MPI_BAD_INPUT_DATA if N is <= 1, - MBEDTLS_ERR_MPI_NOT_ACCEPTABLE if A has no inverse mod N. + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return Another negative error code on different kinds of failure. */ -int mbedtls_mpi_inv_mod( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *N ); +int mbedtls_mpi_gcd( mbedtls_mpi *G, const mbedtls_mpi *A, + const mbedtls_mpi *B ); /** - * \brief Miller-Rabin primality test + * \brief Compute the modular inverse: X = A^-1 mod N * - * \param X MPI to check - * \param f_rng RNG function - * \param p_rng RNG parameter + * \param X The destination MPI. This must point to an initialized MPI. + * \param A The MPI to calculate the modular inverse of. This must point + * to an initialized MPI. + * \param N The base of the modular inversion. This must point to an + * initialized MPI. * - * \return 0 if successful (probably prime), - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed, - * MBEDTLS_ERR_MPI_NOT_ACCEPTABLE if X is not prime + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return #MBEDTLS_ERR_MPI_BAD_INPUT_DATA if \p N is less than + * or equal to one. + * \return #MBEDTLS_ERR_MPI_NOT_ACCEPTABLE if \p has no modular inverse + * with respect to \p N. */ -int mbedtls_mpi_is_prime( const mbedtls_mpi *X, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ); +int mbedtls_mpi_inv_mod( mbedtls_mpi *X, const mbedtls_mpi *A, + const mbedtls_mpi *N ); +#if !defined(MBEDTLS_DEPRECATED_REMOVED) +#if defined(MBEDTLS_DEPRECATED_WARNING) +#define MBEDTLS_DEPRECATED __attribute__((deprecated)) +#else +#define MBEDTLS_DEPRECATED +#endif /** - * \brief Prime number generation - * - * \param X Destination MPI - * \param nbits Required size of X in bits - * ( 3 <= nbits <= MBEDTLS_MPI_MAX_BITS ) - * \param dh_flag If 1, then (X-1)/2 will be prime too - * \param f_rng RNG function - * \param p_rng RNG parameter - * - * \return 0 if successful (probably prime), - * MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed, - * MBEDTLS_ERR_MPI_BAD_INPUT_DATA if nbits is < 3 - */ -int mbedtls_mpi_gen_prime( mbedtls_mpi *X, size_t nbits, int dh_flag, + * \brief Perform a Miller-Rabin primality test with error + * probability of 2<sup>-80</sup>. + * + * \deprecated Superseded by mbedtls_mpi_is_prime_ext() which allows + * specifying the number of Miller-Rabin rounds. + * + * \param X The MPI to check for primality. + * This must point to an initialized MPI. + * \param f_rng The RNG function to use. This must not be \c NULL. + * \param p_rng The RNG parameter to be passed to \p f_rng. + * This may be \c NULL if \p f_rng doesn't use a + * context parameter. + * + * \return \c 0 if successful, i.e. \p X is probably prime. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return #MBEDTLS_ERR_MPI_NOT_ACCEPTABLE if \p X is not prime. + * \return Another negative error code on other kinds of failure. + */ +MBEDTLS_DEPRECATED int mbedtls_mpi_is_prime( const mbedtls_mpi *X, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng ); +#undef MBEDTLS_DEPRECATED +#endif /* !MBEDTLS_DEPRECATED_REMOVED */ + +/** + * \brief Miller-Rabin primality test. + * + * \warning If \p X is potentially generated by an adversary, for example + * when validating cryptographic parameters that you didn't + * generate yourself and that are supposed to be prime, then + * \p rounds should be at least the half of the security + * strength of the cryptographic algorithm. On the other hand, + * if \p X is chosen uniformly or non-adversially (as is the + * case when mbedtls_mpi_gen_prime calls this function), then + * \p rounds can be much lower. + * + * \param X The MPI to check for primality. + * This must point to an initialized MPI. + * \param rounds The number of bases to perform the Miller-Rabin primality + * test for. The probability of returning 0 on a composite is + * at most 2<sup>-2*\p rounds</sup>. + * \param f_rng The RNG function to use. This must not be \c NULL. + * \param p_rng The RNG parameter to be passed to \p f_rng. + * This may be \c NULL if \p f_rng doesn't use + * a context parameter. + * + * \return \c 0 if successful, i.e. \p X is probably prime. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return #MBEDTLS_ERR_MPI_NOT_ACCEPTABLE if \p X is not prime. + * \return Another negative error code on other kinds of failure. + */ +int mbedtls_mpi_is_prime_ext( const mbedtls_mpi *X, int rounds, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng ); +/** + * \brief Flags for mbedtls_mpi_gen_prime() + * + * Each of these flags is a constraint on the result X returned by + * mbedtls_mpi_gen_prime(). + */ +typedef enum { + MBEDTLS_MPI_GEN_PRIME_FLAG_DH = 0x0001, /**< (X-1)/2 is prime too */ + MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR = 0x0002, /**< lower error rate from 2<sup>-80</sup> to 2<sup>-128</sup> */ +} mbedtls_mpi_gen_prime_flag_t; + +/** + * \brief Generate a prime number. + * + * \param X The destination MPI to store the generated prime in. + * This must point to an initialized MPi. + * \param nbits The required size of the destination MPI in bits. + * This must be between \c 3 and #MBEDTLS_MPI_MAX_BITS. + * \param flags A mask of flags of type #mbedtls_mpi_gen_prime_flag_t. + * \param f_rng The RNG function to use. This must not be \c NULL. + * \param p_rng The RNG parameter to be passed to \p f_rng. + * This may be \c NULL if \p f_rng doesn't use + * a context parameter. + * + * \return \c 0 if successful, in which case \p X holds a + * probably prime number. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed. + * \return #MBEDTLS_ERR_MPI_BAD_INPUT_DATA if `nbits` is not between + * \c 3 and #MBEDTLS_MPI_MAX_BITS. + */ +int mbedtls_mpi_gen_prime( mbedtls_mpi *X, size_t nbits, int flags, int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ); diff --git a/thirdparty/mbedtls/include/mbedtls/blowfish.h b/thirdparty/mbedtls/include/mbedtls/blowfish.h index 985faa43f0..f01573dcaf 100644 --- a/thirdparty/mbedtls/include/mbedtls/blowfish.h +++ b/thirdparty/mbedtls/include/mbedtls/blowfish.h @@ -33,6 +33,8 @@ #include <stddef.h> #include <stdint.h> +#include "platform_util.h" + #define MBEDTLS_BLOWFISH_ENCRYPT 1 #define MBEDTLS_BLOWFISH_DECRYPT 0 #define MBEDTLS_BLOWFISH_MAX_KEY_BITS 448 @@ -40,9 +42,16 @@ #define MBEDTLS_BLOWFISH_ROUNDS 16 /**< Rounds to use. When increasing this value, make sure to extend the initialisation vectors */ #define MBEDTLS_BLOWFISH_BLOCKSIZE 8 /* Blowfish uses 64 bit blocks */ -#define MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH -0x0016 /**< Invalid key length. */ +#if !defined(MBEDTLS_DEPRECATED_REMOVED) +#define MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH MBEDTLS_DEPRECATED_NUMERIC_CONSTANT( -0x0016 ) +#endif /* !MBEDTLS_DEPRECATED_REMOVED */ +#define MBEDTLS_ERR_BLOWFISH_BAD_INPUT_DATA -0x0016 /**< Bad input data. */ + +#define MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH -0x0018 /**< Invalid data input length. */ + +/* MBEDTLS_ERR_BLOWFISH_HW_ACCEL_FAILED is deprecated and should not be used. + */ #define MBEDTLS_ERR_BLOWFISH_HW_ACCEL_FAILED -0x0017 /**< Blowfish hardware accelerator failed. */ -#define MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH -0x0018 /**< Invalid data input length. */ #ifdef __cplusplus extern "C" { @@ -55,7 +64,7 @@ extern "C" { /** * \brief Blowfish context structure */ -typedef struct +typedef struct mbedtls_blowfish_context { uint32_t P[MBEDTLS_BLOWFISH_ROUNDS + 2]; /*!< Blowfish round keys */ uint32_t S[4][256]; /*!< key dependent S-boxes */ @@ -67,40 +76,53 @@ mbedtls_blowfish_context; #endif /* MBEDTLS_BLOWFISH_ALT */ /** - * \brief Initialize Blowfish context + * \brief Initialize a Blowfish context. * - * \param ctx Blowfish context to be initialized + * \param ctx The Blowfish context to be initialized. + * This must not be \c NULL. */ void mbedtls_blowfish_init( mbedtls_blowfish_context *ctx ); /** - * \brief Clear Blowfish context + * \brief Clear a Blowfish context. * - * \param ctx Blowfish context to be cleared + * \param ctx The Blowfish context to be cleared. + * This may be \c NULL, in which case this function + * returns immediately. If it is not \c NULL, it must + * point to an initialized Blowfish context. */ void mbedtls_blowfish_free( mbedtls_blowfish_context *ctx ); /** - * \brief Blowfish key schedule + * \brief Perform a Blowfish key schedule operation. * - * \param ctx Blowfish context to be initialized - * \param key encryption key - * \param keybits must be between 32 and 448 bits + * \param ctx The Blowfish context to perform the key schedule on. + * \param key The encryption key. This must be a readable buffer of + * length \p keybits Bits. + * \param keybits The length of \p key in Bits. This must be between + * \c 32 and \c 448 and a multiple of \c 8. * - * \return 0 if successful, or MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH + * \return \c 0 if successful. + * \return A negative error code on failure. */ int mbedtls_blowfish_setkey( mbedtls_blowfish_context *ctx, const unsigned char *key, unsigned int keybits ); /** - * \brief Blowfish-ECB block encryption/decryption + * \brief Perform a Blowfish-ECB block encryption/decryption operation. * - * \param ctx Blowfish context - * \param mode MBEDTLS_BLOWFISH_ENCRYPT or MBEDTLS_BLOWFISH_DECRYPT - * \param input 8-byte input block - * \param output 8-byte output block + * \param ctx The Blowfish context to use. This must be initialized + * and bound to a key. + * \param mode The mode of operation. Possible values are + * #MBEDTLS_BLOWFISH_ENCRYPT for encryption, or + * #MBEDTLS_BLOWFISH_DECRYPT for decryption. + * \param input The input block. This must be a readable buffer + * of size \c 8 Bytes. + * \param output The output block. This must be a writable buffer + * of size \c 8 Bytes. * - * \return 0 if successful + * \return \c 0 if successful. + * \return A negative error code on failure. */ int mbedtls_blowfish_crypt_ecb( mbedtls_blowfish_context *ctx, int mode, @@ -109,9 +131,7 @@ int mbedtls_blowfish_crypt_ecb( mbedtls_blowfish_context *ctx, #if defined(MBEDTLS_CIPHER_MODE_CBC) /** - * \brief Blowfish-CBC buffer encryption/decryption - * Length should be a multiple of the block - * size (8 bytes) + * \brief Perform a Blowfish-CBC buffer encryption/decryption operation. * * \note Upon exit, the content of the IV is updated so that you can * call the function same function again on the following @@ -121,15 +141,22 @@ int mbedtls_blowfish_crypt_ecb( mbedtls_blowfish_context *ctx, * IV, you should either save it manually or use the cipher * module instead. * - * \param ctx Blowfish context - * \param mode MBEDTLS_BLOWFISH_ENCRYPT or MBEDTLS_BLOWFISH_DECRYPT - * \param length length of the input data - * \param iv initialization vector (updated after use) - * \param input buffer holding the input data - * \param output buffer holding the output data + * \param ctx The Blowfish context to use. This must be initialized + * and bound to a key. + * \param mode The mode of operation. Possible values are + * #MBEDTLS_BLOWFISH_ENCRYPT for encryption, or + * #MBEDTLS_BLOWFISH_DECRYPT for decryption. + * \param length The length of the input data in Bytes. This must be + * multiple of \c 8. + * \param iv The initialization vector. This must be a read/write buffer + * of length \c 8 Bytes. It is updated by this function. + * \param input The input data. This must be a readable buffer of length + * \p length Bytes. + * \param output The output data. This must be a writable buffer of length + * \p length Bytes. * - * \return 0 if successful, or - * MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH + * \return \c 0 if successful. + * \return A negative error code on failure. */ int mbedtls_blowfish_crypt_cbc( mbedtls_blowfish_context *ctx, int mode, @@ -141,7 +168,7 @@ int mbedtls_blowfish_crypt_cbc( mbedtls_blowfish_context *ctx, #if defined(MBEDTLS_CIPHER_MODE_CFB) /** - * \brief Blowfish CFB buffer encryption/decryption. + * \brief Perform a Blowfish CFB buffer encryption/decryption operation. * * \note Upon exit, the content of the IV is updated so that you can * call the function same function again on the following @@ -151,15 +178,25 @@ int mbedtls_blowfish_crypt_cbc( mbedtls_blowfish_context *ctx, * IV, you should either save it manually or use the cipher * module instead. * - * \param ctx Blowfish context - * \param mode MBEDTLS_BLOWFISH_ENCRYPT or MBEDTLS_BLOWFISH_DECRYPT - * \param length length of the input data - * \param iv_off offset in IV (updated after use) - * \param iv initialization vector (updated after use) - * \param input buffer holding the input data - * \param output buffer holding the output data + * \param ctx The Blowfish context to use. This must be initialized + * and bound to a key. + * \param mode The mode of operation. Possible values are + * #MBEDTLS_BLOWFISH_ENCRYPT for encryption, or + * #MBEDTLS_BLOWFISH_DECRYPT for decryption. + * \param length The length of the input data in Bytes. + * \param iv_off The offset in the initialiation vector. + * The value pointed to must be smaller than \c 8 Bytes. + * It is updated by this function to support the aforementioned + * streaming usage. + * \param iv The initialization vector. This must be a read/write buffer + * of size \c 8 Bytes. It is updated after use. + * \param input The input data. This must be a readable buffer of length + * \p length Bytes. + * \param output The output data. This must be a writable buffer of length + * \p length Bytes. * - * \return 0 if successful + * \return \c 0 if successful. + * \return A negative error code on failure. */ int mbedtls_blowfish_crypt_cfb64( mbedtls_blowfish_context *ctx, int mode, @@ -172,7 +209,7 @@ int mbedtls_blowfish_crypt_cfb64( mbedtls_blowfish_context *ctx, #if defined(MBEDTLS_CIPHER_MODE_CTR) /** - * \brief Blowfish-CTR buffer encryption/decryption + * \brief Perform a Blowfish-CTR buffer encryption/decryption operation. * * \warning You must never reuse a nonce value with the same key. Doing so * would void the encryption for the two messages encrypted with @@ -215,18 +252,24 @@ int mbedtls_blowfish_crypt_cfb64( mbedtls_blowfish_context *ctx, * content must not be written to insecure storage and should be * securely discarded as soon as it's no longer needed. * - * \param ctx Blowfish context - * \param length The length of the data + * \param ctx The Blowfish context to use. This must be initialized + * and bound to a key. + * \param length The length of the input data in Bytes. * \param nc_off The offset in the current stream_block (for resuming - * within current cipher stream). The offset pointer to - * should be 0 at the start of a stream. - * \param nonce_counter The 64-bit nonce and counter. - * \param stream_block The saved stream-block for resuming. Is overwritten - * by the function. - * \param input The input data stream - * \param output The output data stream - * - * \return 0 if successful + * within current cipher stream). The offset pointer + * should be \c 0 at the start of a stream and must be + * smaller than \c 8. It is updated by this function. + * \param nonce_counter The 64-bit nonce and counter. This must point to a + * read/write buffer of length \c 8 Bytes. + * \param stream_block The saved stream-block for resuming. This must point to + * a read/write buffer of length \c 8 Bytes. + * \param input The input data. This must be a readable buffer of + * length \p length Bytes. + * \param output The output data. This must be a writable buffer of + * length \p length Bytes. + * + * \return \c 0 if successful. + * \return A negative error code on failure. */ int mbedtls_blowfish_crypt_ctr( mbedtls_blowfish_context *ctx, size_t length, diff --git a/thirdparty/mbedtls/include/mbedtls/bn_mul.h b/thirdparty/mbedtls/include/mbedtls/bn_mul.h index b587317d95..2f7b72fe4c 100644 --- a/thirdparty/mbedtls/include/mbedtls/bn_mul.h +++ b/thirdparty/mbedtls/include/mbedtls/bn_mul.h @@ -170,19 +170,19 @@ #define MULADDC_INIT \ asm( \ - "xorq %%r8, %%r8 \n\t" + "xorq %%r8, %%r8\n" #define MULADDC_CORE \ - "movq (%%rsi), %%rax \n\t" \ - "mulq %%rbx \n\t" \ - "addq $8, %%rsi \n\t" \ - "addq %%rcx, %%rax \n\t" \ - "movq %%r8, %%rcx \n\t" \ - "adcq $0, %%rdx \n\t" \ - "nop \n\t" \ - "addq %%rax, (%%rdi) \n\t" \ - "adcq %%rdx, %%rcx \n\t" \ - "addq $8, %%rdi \n\t" + "movq (%%rsi), %%rax\n" \ + "mulq %%rbx\n" \ + "addq $8, %%rsi\n" \ + "addq %%rcx, %%rax\n" \ + "movq %%r8, %%rcx\n" \ + "adcq $0, %%rdx\n" \ + "nop \n" \ + "addq %%rax, (%%rdi)\n" \ + "adcq %%rdx, %%rcx\n" \ + "addq $8, %%rdi\n" #define MULADDC_STOP \ : "+c" (c), "+D" (d), "+S" (s) \ @@ -565,9 +565,8 @@ #endif /* TriCore */ /* - * gcc -O0 by default uses r7 for the frame pointer, so it complains about our - * use of r7 below, unless -fomit-frame-pointer is passed. Unfortunately, - * passing that option is not easy when building with yotta. + * Note, gcc -O0 by default uses r7 for the frame pointer, so it complains about + * our use of r7 below, unless -fomit-frame-pointer is passed. * * On the other hand, -fomit-frame-pointer is implied by any -Ox options with * x !=0, which we can detect using __OPTIMIZE__ (which is also defined by @@ -637,6 +636,23 @@ "r6", "r7", "r8", "r9", "cc" \ ); +#elif defined (__ARM_FEATURE_DSP) && (__ARM_FEATURE_DSP == 1) + +#define MULADDC_INIT \ + asm( + +#define MULADDC_CORE \ + "ldr r0, [%0], #4 \n\t" \ + "ldr r1, [%1] \n\t" \ + "umaal r1, %2, %3, r0 \n\t" \ + "str r1, [%1], #4 \n\t" + +#define MULADDC_STOP \ + : "=r" (s), "=r" (d), "=r" (c) \ + : "r" (b), "0" (s), "1" (d), "2" (c) \ + : "r0", "r1", "memory" \ + ); + #else #define MULADDC_INIT \ diff --git a/thirdparty/mbedtls/include/mbedtls/camellia.h b/thirdparty/mbedtls/include/mbedtls/camellia.h index 7e4721af78..0f7c42c92d 100644 --- a/thirdparty/mbedtls/include/mbedtls/camellia.h +++ b/thirdparty/mbedtls/include/mbedtls/camellia.h @@ -33,11 +33,20 @@ #include <stddef.h> #include <stdint.h> +#include "platform_util.h" + #define MBEDTLS_CAMELLIA_ENCRYPT 1 #define MBEDTLS_CAMELLIA_DECRYPT 0 -#define MBEDTLS_ERR_CAMELLIA_INVALID_KEY_LENGTH -0x0024 /**< Invalid key length. */ -#define MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH -0x0026 /**< Invalid data input length. */ +#if !defined(MBEDTLS_DEPRECATED_REMOVED) +#define MBEDTLS_ERR_CAMELLIA_INVALID_KEY_LENGTH MBEDTLS_DEPRECATED_NUMERIC_CONSTANT( -0x0024 ) +#endif /* !MBEDTLS_DEPRECATED_REMOVED */ +#define MBEDTLS_ERR_CAMELLIA_BAD_INPUT_DATA -0x0024 /**< Bad input data. */ + +#define MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH -0x0026 /**< Invalid data input length. */ + +/* MBEDTLS_ERR_CAMELLIA_HW_ACCEL_FAILED is deprecated and should not be used. + */ #define MBEDTLS_ERR_CAMELLIA_HW_ACCEL_FAILED -0x0027 /**< Camellia hardware accelerator failed. */ #ifdef __cplusplus @@ -51,7 +60,7 @@ extern "C" { /** * \brief CAMELLIA context structure */ -typedef struct +typedef struct mbedtls_camellia_context { int nr; /*!< number of rounds */ uint32_t rk[68]; /*!< CAMELLIA round keys */ @@ -63,52 +72,68 @@ mbedtls_camellia_context; #endif /* MBEDTLS_CAMELLIA_ALT */ /** - * \brief Initialize CAMELLIA context + * \brief Initialize a CAMELLIA context. * - * \param ctx CAMELLIA context to be initialized + * \param ctx The CAMELLIA context to be initialized. + * This must not be \c NULL. */ void mbedtls_camellia_init( mbedtls_camellia_context *ctx ); /** - * \brief Clear CAMELLIA context + * \brief Clear a CAMELLIA context. * - * \param ctx CAMELLIA context to be cleared + * \param ctx The CAMELLIA context to be cleared. This may be \c NULL, + * in which case this function returns immediately. If it is not + * \c NULL, it must be initialized. */ void mbedtls_camellia_free( mbedtls_camellia_context *ctx ); /** - * \brief CAMELLIA key schedule (encryption) + * \brief Perform a CAMELLIA key schedule operation for encryption. * - * \param ctx CAMELLIA context to be initialized - * \param key encryption key - * \param keybits must be 128, 192 or 256 + * \param ctx The CAMELLIA context to use. This must be initialized. + * \param key The encryption key to use. This must be a readable buffer + * of size \p keybits Bits. + * \param keybits The length of \p key in Bits. This must be either \c 128, + * \c 192 or \c 256. * - * \return 0 if successful, or MBEDTLS_ERR_CAMELLIA_INVALID_KEY_LENGTH + * \return \c 0 if successful. + * \return A negative error code on failure. */ -int mbedtls_camellia_setkey_enc( mbedtls_camellia_context *ctx, const unsigned char *key, - unsigned int keybits ); +int mbedtls_camellia_setkey_enc( mbedtls_camellia_context *ctx, + const unsigned char *key, + unsigned int keybits ); /** - * \brief CAMELLIA key schedule (decryption) + * \brief Perform a CAMELLIA key schedule operation for decryption. * - * \param ctx CAMELLIA context to be initialized - * \param key decryption key - * \param keybits must be 128, 192 or 256 + * \param ctx The CAMELLIA context to use. This must be initialized. + * \param key The decryption key. This must be a readable buffer + * of size \p keybits Bits. + * \param keybits The length of \p key in Bits. This must be either \c 128, + * \c 192 or \c 256. * - * \return 0 if successful, or MBEDTLS_ERR_CAMELLIA_INVALID_KEY_LENGTH + * \return \c 0 if successful. + * \return A negative error code on failure. */ -int mbedtls_camellia_setkey_dec( mbedtls_camellia_context *ctx, const unsigned char *key, - unsigned int keybits ); +int mbedtls_camellia_setkey_dec( mbedtls_camellia_context *ctx, + const unsigned char *key, + unsigned int keybits ); /** - * \brief CAMELLIA-ECB block encryption/decryption - * - * \param ctx CAMELLIA context - * \param mode MBEDTLS_CAMELLIA_ENCRYPT or MBEDTLS_CAMELLIA_DECRYPT - * \param input 16-byte input block - * \param output 16-byte output block - * - * \return 0 if successful + * \brief Perform a CAMELLIA-ECB block encryption/decryption operation. + * + * \param ctx The CAMELLIA context to use. This must be initialized + * and bound to a key. + * \param mode The mode of operation. This must be either + * #MBEDTLS_CAMELLIA_ENCRYPT or #MBEDTLS_CAMELLIA_DECRYPT. + * \param input The input block. This must be a readable buffer + * of size \c 16 Bytes. + * \param output The output block. This must be a writable buffer + * of size \c 16 Bytes. + * + * \return \c 0 if successful. + * \return A negative error code on failure. */ int mbedtls_camellia_crypt_ecb( mbedtls_camellia_context *ctx, int mode, @@ -117,9 +142,7 @@ int mbedtls_camellia_crypt_ecb( mbedtls_camellia_context *ctx, #if defined(MBEDTLS_CIPHER_MODE_CBC) /** - * \brief CAMELLIA-CBC buffer encryption/decryption - * Length should be a multiple of the block - * size (16 bytes) + * \brief Perform a CAMELLIA-CBC buffer encryption/decryption operation. * * \note Upon exit, the content of the IV is updated so that you can * call the function same function again on the following @@ -129,15 +152,22 @@ int mbedtls_camellia_crypt_ecb( mbedtls_camellia_context *ctx, * IV, you should either save it manually or use the cipher * module instead. * - * \param ctx CAMELLIA context - * \param mode MBEDTLS_CAMELLIA_ENCRYPT or MBEDTLS_CAMELLIA_DECRYPT - * \param length length of the input data - * \param iv initialization vector (updated after use) - * \param input buffer holding the input data - * \param output buffer holding the output data - * - * \return 0 if successful, or - * MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH + * \param ctx The CAMELLIA context to use. This must be initialized + * and bound to a key. + * \param mode The mode of operation. This must be either + * #MBEDTLS_CAMELLIA_ENCRYPT or #MBEDTLS_CAMELLIA_DECRYPT. + * \param length The length in Bytes of the input data \p input. + * This must be a multiple of \c 16 Bytes. + * \param iv The initialization vector. This must be a read/write buffer + * of length \c 16 Bytes. It is updated to allow streaming + * use as explained above. + * \param input The buffer holding the input data. This must point to a + * readable buffer of length \p length Bytes. + * \param output The buffer holding the output data. This must point to a + * writable buffer of length \p length Bytes. + * + * \return \c 0 if successful. + * \return A negative error code on failure. */ int mbedtls_camellia_crypt_cbc( mbedtls_camellia_context *ctx, int mode, @@ -149,11 +179,14 @@ int mbedtls_camellia_crypt_cbc( mbedtls_camellia_context *ctx, #if defined(MBEDTLS_CIPHER_MODE_CFB) /** - * \brief CAMELLIA-CFB128 buffer encryption/decryption + * \brief Perform a CAMELLIA-CFB128 buffer encryption/decryption + * operation. * - * Note: Due to the nature of CFB you should use the same key schedule for - * both encryption and decryption. So a context initialized with - * mbedtls_camellia_setkey_enc() for both MBEDTLS_CAMELLIA_ENCRYPT and CAMELLIE_DECRYPT. + * \note Due to the nature of CFB mode, you should use the same + * key for both encryption and decryption. In particular, calls + * to this function should be preceded by a key-schedule via + * mbedtls_camellia_setkey_enc() regardless of whether \p mode + * is #MBEDTLS_CAMELLIA_ENCRYPT or #MBEDTLS_CAMELLIA_DECRYPT. * * \note Upon exit, the content of the IV is updated so that you can * call the function same function again on the following @@ -163,16 +196,24 @@ int mbedtls_camellia_crypt_cbc( mbedtls_camellia_context *ctx, * IV, you should either save it manually or use the cipher * module instead. * - * \param ctx CAMELLIA context - * \param mode MBEDTLS_CAMELLIA_ENCRYPT or MBEDTLS_CAMELLIA_DECRYPT - * \param length length of the input data - * \param iv_off offset in IV (updated after use) - * \param iv initialization vector (updated after use) - * \param input buffer holding the input data - * \param output buffer holding the output data - * - * \return 0 if successful, or - * MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH + * \param ctx The CAMELLIA context to use. This must be initialized + * and bound to a key. + * \param mode The mode of operation. This must be either + * #MBEDTLS_CAMELLIA_ENCRYPT or #MBEDTLS_CAMELLIA_DECRYPT. + * \param length The length of the input data \p input. Any value is allowed. + * \param iv_off The current offset in the IV. This must be smaller + * than \c 16 Bytes. It is updated after this call to allow + * the aforementioned streaming usage. + * \param iv The initialization vector. This must be a read/write buffer + * of length \c 16 Bytes. It is updated after this call to + * allow the aforementioned streaming usage. + * \param input The buffer holding the input data. This must be a readable + * buffer of size \p length Bytes. + * \param output The buffer to hold the output data. This must be a writable + * buffer of length \p length Bytes. + * + * \return \c 0 if successful. + * \return A negative error code on failure. */ int mbedtls_camellia_crypt_cfb128( mbedtls_camellia_context *ctx, int mode, @@ -185,11 +226,13 @@ int mbedtls_camellia_crypt_cfb128( mbedtls_camellia_context *ctx, #if defined(MBEDTLS_CIPHER_MODE_CTR) /** - * \brief CAMELLIA-CTR buffer encryption/decryption + * \brief Perform a CAMELLIA-CTR buffer encryption/decryption operation. * - * Note: Due to the nature of CTR you should use the same key schedule for - * both encryption and decryption. So a context initialized with - * mbedtls_camellia_setkey_enc() for both MBEDTLS_CAMELLIA_ENCRYPT and MBEDTLS_CAMELLIA_DECRYPT. + * *note Due to the nature of CTR mode, you should use the same + * key for both encryption and decryption. In particular, calls + * to this function should be preceded by a key-schedule via + * mbedtls_camellia_setkey_enc() regardless of whether \p mode + * is #MBEDTLS_CAMELLIA_ENCRYPT or #MBEDTLS_CAMELLIA_DECRYPT. * * \warning You must never reuse a nonce value with the same key. Doing so * would void the encryption for the two messages encrypted with @@ -212,41 +255,49 @@ int mbedtls_camellia_crypt_cfb128( mbedtls_camellia_context *ctx, * per-message nonce, handled by yourself, and the second one * updated by this function internally. * - * For example, you might reserve the first 12 bytes for the - * per-message nonce, and the last 4 bytes for internal use. In that - * case, before calling this function on a new message you need to - * set the first 12 bytes of \p nonce_counter to your chosen nonce - * value, the last 4 to 0, and \p nc_off to 0 (which will cause \p - * stream_block to be ignored). That way, you can encrypt at most - * 2**96 messages of up to 2**32 blocks each with the same key. + * For example, you might reserve the first \c 12 Bytes for the + * per-message nonce, and the last \c 4 Bytes for internal use. + * In that case, before calling this function on a new message you + * need to set the first \c 12 Bytes of \p nonce_counter to your + * chosen nonce value, the last four to \c 0, and \p nc_off to \c 0 + * (which will cause \p stream_block to be ignored). That way, you + * can encrypt at most \c 2**96 messages of up to \c 2**32 blocks + * each with the same key. * * The per-message nonce (or information sufficient to reconstruct - * it) needs to be communicated with the ciphertext and must be unique. - * The recommended way to ensure uniqueness is to use a message - * counter. An alternative is to generate random nonces, but this - * limits the number of messages that can be securely encrypted: - * for example, with 96-bit random nonces, you should not encrypt - * more than 2**32 messages with the same key. + * it) needs to be communicated with the ciphertext and must be + * unique. The recommended way to ensure uniqueness is to use a + * message counter. An alternative is to generate random nonces, + * but this limits the number of messages that can be securely + * encrypted: for example, with 96-bit random nonces, you should + * not encrypt more than 2**32 messages with the same key. * * Note that for both stategies, sizes are measured in blocks and - * that a CAMELLIA block is 16 bytes. + * that a CAMELLIA block is \c 16 Bytes. * * \warning Upon return, \p stream_block contains sensitive data. Its * content must not be written to insecure storage and should be * securely discarded as soon as it's no longer needed. * - * \param ctx CAMELLIA context - * \param length The length of the data - * \param nc_off The offset in the current stream_block (for resuming + * \param ctx The CAMELLIA context to use. This must be initialized + * and bound to a key. + * \param length The length of the input data \p input in Bytes. + * Any value is allowed. + * \param nc_off The offset in the current \p stream_block (for resuming * within current cipher stream). The offset pointer to - * should be 0 at the start of a stream. - * \param nonce_counter The 128-bit nonce and counter. - * \param stream_block The saved stream-block for resuming. Is overwritten - * by the function. - * \param input The input data stream - * \param output The output data stream - * - * \return 0 if successful + * should be \c 0 at the start of a stream. It is updated + * at the end of this call. + * \param nonce_counter The 128-bit nonce and counter. This must be a read/write + * buffer of length \c 16 Bytes. + * \param stream_block The saved stream-block for resuming. This must be a + * read/write buffer of length \c 16 Bytes. + * \param input The input data stream. This must be a readable buffer of + * size \p length Bytes. + * \param output The output data stream. This must be a writable buffer + * of size \p length Bytes. + * + * \return \c 0 if successful. + * \return A negative error code on failure. */ int mbedtls_camellia_crypt_ctr( mbedtls_camellia_context *ctx, size_t length, diff --git a/thirdparty/mbedtls/include/mbedtls/ccm.h b/thirdparty/mbedtls/include/mbedtls/ccm.h index 5d727e7cca..3f6b8f6709 100644 --- a/thirdparty/mbedtls/include/mbedtls/ccm.h +++ b/thirdparty/mbedtls/include/mbedtls/ccm.h @@ -53,8 +53,9 @@ #define MBEDTLS_ERR_CCM_BAD_INPUT -0x000D /**< Bad input parameters to the function. */ #define MBEDTLS_ERR_CCM_AUTH_FAILED -0x000F /**< Authenticated decryption failed. */ -#define MBEDTLS_ERR_CCM_HW_ACCEL_FAILED -0x0011 /**< CCM hardware accelerator failed. */ +/* MBEDTLS_ERR_CCM_HW_ACCEL_FAILED is deprecated and should not be used. */ +#define MBEDTLS_ERR_CCM_HW_ACCEL_FAILED -0x0011 /**< CCM hardware accelerator failed. */ #ifdef __cplusplus extern "C" { @@ -68,7 +69,8 @@ extern "C" { * \brief The CCM context-type definition. The CCM context is passed * to the APIs called. */ -typedef struct { +typedef struct mbedtls_ccm_context +{ mbedtls_cipher_context_t cipher_ctx; /*!< The cipher context used. */ } mbedtls_ccm_context; @@ -82,7 +84,7 @@ mbedtls_ccm_context; * to make references valid, and prepare the context * for mbedtls_ccm_setkey() or mbedtls_ccm_free(). * - * \param ctx The CCM context to initialize. + * \param ctx The CCM context to initialize. This must not be \c NULL. */ void mbedtls_ccm_init( mbedtls_ccm_context *ctx ); @@ -90,9 +92,10 @@ void mbedtls_ccm_init( mbedtls_ccm_context *ctx ); * \brief This function initializes the CCM context set in the * \p ctx parameter and sets the encryption key. * - * \param ctx The CCM context to initialize. + * \param ctx The CCM context to initialize. This must be an initialized + * context. * \param cipher The 128-bit block cipher to use. - * \param key The encryption key. + * \param key The encryption key. This must not be \c NULL. * \param keybits The key size in bits. This must be acceptable by the cipher. * * \return \c 0 on success. @@ -107,7 +110,8 @@ int mbedtls_ccm_setkey( mbedtls_ccm_context *ctx, * \brief This function releases and clears the specified CCM context * and underlying cipher sub-context. * - * \param ctx The CCM context to clear. + * \param ctx The CCM context to clear. If this is \c NULL, the function + * has no effect. Otherwise, this must be initialized. */ void mbedtls_ccm_free( mbedtls_ccm_context *ctx ); @@ -120,19 +124,27 @@ void mbedtls_ccm_free( mbedtls_ccm_context *ctx ); * \p tag = \p output + \p length, and make sure that the * output buffer is at least \p length + \p tag_len wide. * - * \param ctx The CCM context to use for encryption. + * \param ctx The CCM context to use for encryption. This must be + * initialized and bound to a key. * \param length The length of the input data in Bytes. - * \param iv Initialization vector (nonce). + * \param iv The initialization vector (nonce). This must be a readable + * buffer of at least \p iv_len Bytes. * \param iv_len The length of the nonce in Bytes: 7, 8, 9, 10, 11, 12, * or 13. The length L of the message length field is * 15 - \p iv_len. - * \param add The additional data field. + * \param add The additional data field. If \p add_len is greater than + * zero, \p add must be a readable buffer of at least that + * length. * \param add_len The length of additional data in Bytes. - * Must be less than 2^16 - 2^8. - * \param input The buffer holding the input data. - * \param output The buffer holding the output data. - * Must be at least \p length Bytes wide. - * \param tag The buffer holding the authentication field. + * This must be less than `2^16 - 2^8`. + * \param input The buffer holding the input data. If \p length is greater + * than zero, \p input must be a readable buffer of at least + * that length. + * \param output The buffer holding the output data. If \p length is greater + * than zero, \p output must be a writable buffer of at least + * that length. + * \param tag The buffer holding the authentication field. This must be a + * readable buffer of at least \p tag_len Bytes. * \param tag_len The length of the authentication field to generate in Bytes: * 4, 6, 8, 10, 12, 14 or 16. * @@ -158,23 +170,30 @@ int mbedtls_ccm_encrypt_and_tag( mbedtls_ccm_context *ctx, size_t length, * the tag length has to be encoded into the \p iv passed to * this function. * - * \param ctx The CCM context to use for encryption. + * \param ctx The CCM context to use for encryption. This must be + * initialized and bound to a key. * \param length The length of the input data in Bytes. - * \param iv Initialization vector (nonce). + * \param iv The initialization vector (nonce). This must be a readable + * buffer of at least \p iv_len Bytes. * \param iv_len The length of the nonce in Bytes: 7, 8, 9, 10, 11, 12, * or 13. The length L of the message length field is * 15 - \p iv_len. - * \param add The additional data field. + * \param add The additional data field. This must be a readable buffer of + * at least \p add_len Bytes. * \param add_len The length of additional data in Bytes. - * Must be less than 2^16 - 2^8. - * \param input The buffer holding the input data. - * \param output The buffer holding the output data. - * Must be at least \p length Bytes wide. - * \param tag The buffer holding the authentication field. + * This must be less than 2^16 - 2^8. + * \param input The buffer holding the input data. If \p length is greater + * than zero, \p input must be a readable buffer of at least + * that length. + * \param output The buffer holding the output data. If \p length is greater + * than zero, \p output must be a writable buffer of at least + * that length. + * \param tag The buffer holding the authentication field. This must be a + * readable buffer of at least \p tag_len Bytes. * \param tag_len The length of the authentication field to generate in Bytes: * 0, 4, 6, 8, 10, 12, 14 or 16. * - * \warning Passing 0 as \p tag_len means that the message is no + * \warning Passing \c 0 as \p tag_len means that the message is no * longer authenticated. * * \return \c 0 on success. @@ -190,20 +209,27 @@ int mbedtls_ccm_star_encrypt_and_tag( mbedtls_ccm_context *ctx, size_t length, * \brief This function performs a CCM authenticated decryption of a * buffer. * - * \param ctx The CCM context to use for decryption. + * \param ctx The CCM context to use for decryption. This must be + * initialized and bound to a key. * \param length The length of the input data in Bytes. - * \param iv Initialization vector (nonce). + * \param iv The initialization vector (nonce). This must be a readable + * buffer of at least \p iv_len Bytes. * \param iv_len The length of the nonce in Bytes: 7, 8, 9, 10, 11, 12, * or 13. The length L of the message length field is * 15 - \p iv_len. - * \param add The additional data field. + * \param add The additional data field. This must be a readable buffer + * of at least that \p add_len Bytes.. * \param add_len The length of additional data in Bytes. - * Must be less than 2^16 - 2^8. - * \param input The buffer holding the input data. - * \param output The buffer holding the output data. - * Must be at least \p length Bytes wide. - * \param tag The buffer holding the authentication field. - * \param tag_len The length of the authentication field in Bytes. + * This must be less than 2^16 - 2^8. + * \param input The buffer holding the input data. If \p length is greater + * than zero, \p input must be a readable buffer of at least + * that length. + * \param output The buffer holding the output data. If \p length is greater + * than zero, \p output must be a writable buffer of at least + * that length. + * \param tag The buffer holding the authentication field. This must be a + * readable buffer of at least \p tag_len Bytes. + * \param tag_len The length of the authentication field to generate in Bytes: * 4, 6, 8, 10, 12, 14 or 16. * * \return \c 0 on success. This indicates that the message is authentic. @@ -225,23 +251,30 @@ int mbedtls_ccm_auth_decrypt( mbedtls_ccm_context *ctx, size_t length, * this function as \p tag_len. (\p tag needs to be adjusted * accordingly.) * - * \param ctx The CCM context to use for decryption. + * \param ctx The CCM context to use for decryption. This must be + * initialized and bound to a key. * \param length The length of the input data in Bytes. - * \param iv Initialization vector (nonce). + * \param iv The initialization vector (nonce). This must be a readable + * buffer of at least \p iv_len Bytes. * \param iv_len The length of the nonce in Bytes: 7, 8, 9, 10, 11, 12, * or 13. The length L of the message length field is * 15 - \p iv_len. - * \param add The additional data field. + * \param add The additional data field. This must be a readable buffer of + * at least that \p add_len Bytes. * \param add_len The length of additional data in Bytes. - * Must be less than 2^16 - 2^8. - * \param input The buffer holding the input data. - * \param output The buffer holding the output data. - * Must be at least \p length Bytes wide. - * \param tag The buffer holding the authentication field. + * This must be less than 2^16 - 2^8. + * \param input The buffer holding the input data. If \p length is greater + * than zero, \p input must be a readable buffer of at least + * that length. + * \param output The buffer holding the output data. If \p length is greater + * than zero, \p output must be a writable buffer of at least + * that length. + * \param tag The buffer holding the authentication field. This must be a + * readable buffer of at least \p tag_len Bytes. * \param tag_len The length of the authentication field in Bytes. * 0, 4, 6, 8, 10, 12, 14 or 16. * - * \warning Passing 0 as \p tag_len means that the message is no + * \warning Passing \c 0 as \p tag_len means that the message is nos * longer authenticated. * * \return \c 0 on success. diff --git a/thirdparty/mbedtls/include/mbedtls/chacha20.h b/thirdparty/mbedtls/include/mbedtls/chacha20.h index 47bd7d38b9..2ae5e6e5f4 100644 --- a/thirdparty/mbedtls/include/mbedtls/chacha20.h +++ b/thirdparty/mbedtls/include/mbedtls/chacha20.h @@ -43,7 +43,13 @@ #include <stddef.h> #define MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA -0x0051 /**< Invalid input parameter(s). */ + +/* MBEDTLS_ERR_CHACHA20_FEATURE_UNAVAILABLE is deprecated and should not be + * used. */ #define MBEDTLS_ERR_CHACHA20_FEATURE_UNAVAILABLE -0x0053 /**< Feature not available. For example, s part of the API is not implemented. */ + +/* MBEDTLS_ERR_CHACHA20_HW_ACCEL_FAILED is deprecated and should not be used. + */ #define MBEDTLS_ERR_CHACHA20_HW_ACCEL_FAILED -0x0055 /**< Chacha20 hardware accelerator failed. */ #ifdef __cplusplus @@ -52,7 +58,7 @@ extern "C" { #if !defined(MBEDTLS_CHACHA20_ALT) -typedef struct +typedef struct mbedtls_chacha20_context { uint32_t state[16]; /*! The state (before round operations). */ uint8_t keystream8[64]; /*! Leftover keystream bytes. */ @@ -77,13 +83,18 @@ mbedtls_chacha20_context; * \c mbedtls_chacha20_free(). * * \param ctx The ChaCha20 context to initialize. + * This must not be \c NULL. */ void mbedtls_chacha20_init( mbedtls_chacha20_context *ctx ); /** - * \brief This function releases and clears the specified ChaCha20 context. + * \brief This function releases and clears the specified + * ChaCha20 context. + * + * \param ctx The ChaCha20 context to clear. This may be \c NULL, + * in which case this function is a no-op. If it is not + * \c NULL, it must point to an initialized context. * - * \param ctx The ChaCha20 context to clear. */ void mbedtls_chacha20_free( mbedtls_chacha20_context *ctx ); @@ -96,7 +107,9 @@ void mbedtls_chacha20_free( mbedtls_chacha20_context *ctx ); * \c mbedtls_chacha_update(). * * \param ctx The ChaCha20 context to which the key should be bound. - * \param key The encryption/decryption key. Must be 32 bytes in length. + * It must be initialized. + * \param key The encryption/decryption key. This must be \c 32 Bytes + * in length. * * \return \c 0 on success. * \return #MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA if ctx or key is NULL. @@ -115,8 +128,9 @@ int mbedtls_chacha20_setkey( mbedtls_chacha20_context *ctx, * messages encrypted with the same nonce and key. * * \param ctx The ChaCha20 context to which the nonce should be bound. - * \param nonce The nonce. Must be 12 bytes in size. - * \param counter The initial counter value. This is usually 0. + * It must be initialized and bound to a key. + * \param nonce The nonce. This must be \c 12 Bytes in size. + * \param counter The initial counter value. This is usually \c 0. * * \return \c 0 on success. * \return #MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA if ctx or nonce is @@ -144,16 +158,16 @@ int mbedtls_chacha20_starts( mbedtls_chacha20_context* ctx, * key and nonce. * * \param ctx The ChaCha20 context to use for encryption or decryption. - * \param size The length of the input data in bytes. + * It must be initialized and bound to a key and nonce. + * \param size The length of the input data in Bytes. * \param input The buffer holding the input data. - * This pointer can be NULL if size == 0. + * This pointer can be \c NULL if `size == 0`. * \param output The buffer holding the output data. - * Must be able to hold \p size bytes. - * This pointer can be NULL if size == 0. + * This must be able to hold \p size Bytes. + * This pointer can be \c NULL if `size == 0`. * * \return \c 0 on success. - * \return #MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA if the ctx, input, or - * output pointers are NULL. + * \return A negative error code on failure. */ int mbedtls_chacha20_update( mbedtls_chacha20_context *ctx, size_t size, @@ -174,19 +188,19 @@ int mbedtls_chacha20_update( mbedtls_chacha20_context *ctx, * \note The \p input and \p output pointers must either be equal or * point to non-overlapping buffers. * - * \param key The encryption/decryption key. Must be 32 bytes in length. - * \param nonce The nonce. Must be 12 bytes in size. - * \param counter The initial counter value. This is usually 0. - * \param size The length of the input data in bytes. + * \param key The encryption/decryption key. + * This must be \c 32 Bytes in length. + * \param nonce The nonce. This must be \c 12 Bytes in size. + * \param counter The initial counter value. This is usually \c 0. + * \param size The length of the input data in Bytes. * \param input The buffer holding the input data. - * This pointer can be NULL if size == 0. + * This pointer can be \c NULL if `size == 0`. * \param output The buffer holding the output data. - * Must be able to hold \p size bytes. - * This pointer can be NULL if size == 0. + * This must be able to hold \p size Bytes. + * This pointer can be \c NULL if `size == 0`. * * \return \c 0 on success. - * \return #MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA if key, nonce, input, - * or output is NULL. + * \return A negative error code on failure. */ int mbedtls_chacha20_crypt( const unsigned char key[32], const unsigned char nonce[12], diff --git a/thirdparty/mbedtls/include/mbedtls/chachapoly.h b/thirdparty/mbedtls/include/mbedtls/chachapoly.h index 42b2b230c5..49e615d278 100644 --- a/thirdparty/mbedtls/include/mbedtls/chachapoly.h +++ b/thirdparty/mbedtls/include/mbedtls/chachapoly.h @@ -60,7 +60,7 @@ mbedtls_chachapoly_mode_t; #include "chacha20.h" -typedef struct +typedef struct mbedtls_chachapoly_context { mbedtls_chacha20_context chacha20_ctx; /**< The ChaCha20 context. */ mbedtls_poly1305_context poly1305_ctx; /**< The Poly1305 context. */ @@ -115,27 +115,29 @@ mbedtls_chachapoly_context; * all previous outputs of \c mbedtls_chachapoly_update(), * otherwise you can now safely use the plaintext. * - * \param ctx The ChachaPoly context to initialize. + * \param ctx The ChachaPoly context to initialize. Must not be \c NULL. */ void mbedtls_chachapoly_init( mbedtls_chachapoly_context *ctx ); /** - * \brief This function releases and clears the specified ChaCha20-Poly1305 context. + * \brief This function releases and clears the specified + * ChaCha20-Poly1305 context. * - * \param ctx The ChachaPoly context to clear. + * \param ctx The ChachaPoly context to clear. This may be \c NULL, in which + * case this function is a no-op. */ void mbedtls_chachapoly_free( mbedtls_chachapoly_context *ctx ); /** - * \brief This function sets the ChaCha20-Poly1305 symmetric encryption key. + * \brief This function sets the ChaCha20-Poly1305 + * symmetric encryption key. * * \param ctx The ChaCha20-Poly1305 context to which the key should be - * bound. - * \param key The 256-bit (32 bytes) key. + * bound. This must be initialized. + * \param key The \c 256 Bit (\c 32 Bytes) key. * * \return \c 0 on success. - * \return #MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA - * if \p ctx or \p key are NULL. + * \return A negative error code on failure. */ int mbedtls_chachapoly_setkey( mbedtls_chachapoly_context *ctx, const unsigned char key[32] ); @@ -155,14 +157,15 @@ int mbedtls_chachapoly_setkey( mbedtls_chachapoly_context *ctx, * \warning Decryption with the piecewise API is discouraged, see the * warning on \c mbedtls_chachapoly_init(). * - * \param ctx The ChaCha20-Poly1305 context. - * \param nonce The nonce/IV to use for the message. Must be 12 bytes. + * \param ctx The ChaCha20-Poly1305 context. This must be initialized + * and bound to a key. + * \param nonce The nonce/IV to use for the message. + * This must be a redable buffer of length \c 12 Bytes. * \param mode The operation to perform: #MBEDTLS_CHACHAPOLY_ENCRYPT or * #MBEDTLS_CHACHAPOLY_DECRYPT (discouraged, see warning). * * \return \c 0 on success. - * \return #MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA - * if \p ctx or \p mac are NULL. + * \return A negative error code on failure. */ int mbedtls_chachapoly_starts( mbedtls_chachapoly_context *ctx, const unsigned char nonce[12], @@ -193,11 +196,12 @@ int mbedtls_chachapoly_starts( mbedtls_chachapoly_context *ctx, * \warning Decryption with the piecewise API is discouraged, see the * warning on \c mbedtls_chachapoly_init(). * - * \param ctx The ChaCha20-Poly1305 context to use. - * \param aad_len The length (in bytes) of the AAD. The length has no + * \param ctx The ChaCha20-Poly1305 context. This must be initialized + * and bound to a key. + * \param aad_len The length in Bytes of the AAD. The length has no * restrictions. * \param aad Buffer containing the AAD. - * This pointer can be NULL if aad_len == 0. + * This pointer can be \c NULL if `aad_len == 0`. * * \return \c 0 on success. * \return #MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA @@ -227,20 +231,19 @@ int mbedtls_chachapoly_update_aad( mbedtls_chachapoly_context *ctx, * \warning Decryption with the piecewise API is discouraged, see the * warning on \c mbedtls_chachapoly_init(). * - * \param ctx The ChaCha20-Poly1305 context to use. + * \param ctx The ChaCha20-Poly1305 context to use. This must be initialized. * \param len The length (in bytes) of the data to encrypt or decrypt. * \param input The buffer containing the data to encrypt or decrypt. - * This pointer can be NULL if len == 0. - * \param output The buffer to where the encrypted or decrypted data is written. - * Must be able to hold \p len bytes. - * This pointer can be NULL if len == 0. + * This pointer can be \c NULL if `len == 0`. + * \param output The buffer to where the encrypted or decrypted data is + * written. This must be able to hold \p len bytes. + * This pointer can be \c NULL if `len == 0`. * * \return \c 0 on success. - * \return #MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA - * if \p ctx, \p input, or \p output are NULL. * \return #MBEDTLS_ERR_CHACHAPOLY_BAD_STATE * if the operation has not been started or has been * finished. + * \return Another negative error code on other kinds of failure. */ int mbedtls_chachapoly_update( mbedtls_chachapoly_context *ctx, size_t len, @@ -251,18 +254,17 @@ int mbedtls_chachapoly_update( mbedtls_chachapoly_context *ctx, * \brief This function finished the ChaCha20-Poly1305 operation and * generates the MAC (authentication tag). * - * \param ctx The ChaCha20-Poly1305 context to use. + * \param ctx The ChaCha20-Poly1305 context to use. This must be initialized. * \param mac The buffer to where the 128-bit (16 bytes) MAC is written. * * \warning Decryption with the piecewise API is discouraged, see the * warning on \c mbedtls_chachapoly_init(). * * \return \c 0 on success. - * \return #MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA - * if \p ctx or \p mac are NULL. * \return #MBEDTLS_ERR_CHACHAPOLY_BAD_STATE * if the operation has not been started or has been * finished. + * \return Another negative error code on other kinds of failure. */ int mbedtls_chachapoly_finish( mbedtls_chachapoly_context *ctx, unsigned char mac[16] ); @@ -280,20 +282,21 @@ int mbedtls_chachapoly_finish( mbedtls_chachapoly_context *ctx, * and key. * * \param ctx The ChaCha20-Poly1305 context to use (holds the key). + * This must be initialized. * \param length The length (in bytes) of the data to encrypt or decrypt. * \param nonce The 96-bit (12 bytes) nonce/IV to use. - * \param aad The buffer containing the additional authenticated data (AAD). - * This pointer can be NULL if aad_len == 0. + * \param aad The buffer containing the additional authenticated + * data (AAD). This pointer can be \c NULL if `aad_len == 0`. * \param aad_len The length (in bytes) of the AAD data to process. * \param input The buffer containing the data to encrypt or decrypt. - * This pointer can be NULL if ilen == 0. - * \param output The buffer to where the encrypted or decrypted data is written. - * This pointer can be NULL if ilen == 0. - * \param tag The buffer to where the computed 128-bit (16 bytes) MAC is written. + * This pointer can be \c NULL if `ilen == 0`. + * \param output The buffer to where the encrypted or decrypted data + * is written. This pointer can be \c NULL if `ilen == 0`. + * \param tag The buffer to where the computed 128-bit (16 bytes) MAC + * is written. This must not be \c NULL. * * \return \c 0 on success. - * \return #MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA - * if one or more of the required parameters are NULL. + * \return A negative error code on failure. */ int mbedtls_chachapoly_encrypt_and_tag( mbedtls_chachapoly_context *ctx, size_t length, @@ -312,22 +315,22 @@ int mbedtls_chachapoly_encrypt_and_tag( mbedtls_chachapoly_context *ctx, * \c mbedtls_chachapoly_setkey(). * * \param ctx The ChaCha20-Poly1305 context to use (holds the key). - * \param length The length (in bytes) of the data to decrypt. - * \param nonce The 96-bit (12 bytes) nonce/IV to use. + * \param length The length (in Bytes) of the data to decrypt. + * \param nonce The \c 96 Bit (\c 12 bytes) nonce/IV to use. * \param aad The buffer containing the additional authenticated data (AAD). - * This pointer can be NULL if aad_len == 0. + * This pointer can be \c NULL if `aad_len == 0`. * \param aad_len The length (in bytes) of the AAD data to process. * \param tag The buffer holding the authentication tag. + * This must be a readable buffer of length \c 16 Bytes. * \param input The buffer containing the data to decrypt. - * This pointer can be NULL if ilen == 0. + * This pointer can be \c NULL if `ilen == 0`. * \param output The buffer to where the decrypted data is written. - * This pointer can be NULL if ilen == 0. + * This pointer can be \c NULL if `ilen == 0`. * * \return \c 0 on success. - * \return #MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA - * if one or more of the required parameters are NULL. * \return #MBEDTLS_ERR_CHACHAPOLY_AUTH_FAILED * if the data was not authentic. + * \return Another negative error code on other kinds of failure. */ int mbedtls_chachapoly_auth_decrypt( mbedtls_chachapoly_context *ctx, size_t length, diff --git a/thirdparty/mbedtls/include/mbedtls/check_config.h b/thirdparty/mbedtls/include/mbedtls/check_config.h index 9e6bb8a46a..b86e5807e0 100644 --- a/thirdparty/mbedtls/include/mbedtls/check_config.h +++ b/thirdparty/mbedtls/include/mbedtls/check_config.h @@ -108,6 +108,17 @@ #error "MBEDTLS_ECJPAKE_C defined, but not all prerequisites" #endif +#if defined(MBEDTLS_ECP_RESTARTABLE) && \ + ( defined(MBEDTLS_ECDH_COMPUTE_SHARED_ALT) || \ + defined(MBEDTLS_ECDH_GEN_PUBLIC_ALT) || \ + defined(MBEDTLS_ECDSA_SIGN_ALT) || \ + defined(MBEDTLS_ECDSA_VERIFY_ALT) || \ + defined(MBEDTLS_ECDSA_GENKEY_ALT) || \ + defined(MBEDTLS_ECP_INTERNAL_ALT) || \ + defined(MBEDTLS_ECP_ALT) ) +#error "MBEDTLS_ECP_RESTARTABLE defined, but it cannot coexist with an alternative ECP implementation" +#endif + #if defined(MBEDTLS_ECDSA_DETERMINISTIC) && !defined(MBEDTLS_HMAC_DRBG_C) #error "MBEDTLS_ECDSA_DETERMINISTIC defined, but not all prerequisites" #endif @@ -127,6 +138,10 @@ #error "MBEDTLS_ECP_C defined, but not all prerequisites" #endif +#if defined(MBEDTLS_PK_PARSE_C) && !defined(MBEDTLS_ASN1_PARSE_C) +#error "MBEDTLS_PK_PARSE_C defined, but not all prerequesites" +#endif + #if defined(MBEDTLS_ENTROPY_C) && (!defined(MBEDTLS_SHA512_C) && \ !defined(MBEDTLS_SHA256_C)) #error "MBEDTLS_ENTROPY_C defined, but not all prerequisites" diff --git a/thirdparty/mbedtls/include/mbedtls/cipher.h b/thirdparty/mbedtls/include/mbedtls/cipher.h index ea0ce983f1..922b6c32c6 100644 --- a/thirdparty/mbedtls/include/mbedtls/cipher.h +++ b/thirdparty/mbedtls/include/mbedtls/cipher.h @@ -36,6 +36,7 @@ #endif #include <stddef.h> +#include "mbedtls/platform_util.h" #if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CCM_C) || defined(MBEDTLS_CHACHAPOLY_C) #define MBEDTLS_CIPHER_MODE_AEAD @@ -45,7 +46,8 @@ #define MBEDTLS_CIPHER_MODE_WITH_PADDING #endif -#if defined(MBEDTLS_ARC4_C) || defined(MBEDTLS_CIPHER_NULL_CIPHER) +#if defined(MBEDTLS_ARC4_C) || defined(MBEDTLS_CIPHER_NULL_CIPHER) || \ + defined(MBEDTLS_CHACHA20_C) #define MBEDTLS_CIPHER_MODE_STREAM #endif @@ -61,6 +63,8 @@ #define MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED -0x6280 /**< Decryption of block requires a full block. */ #define MBEDTLS_ERR_CIPHER_AUTH_FAILED -0x6300 /**< Authentication failed (for AEAD modes). */ #define MBEDTLS_ERR_CIPHER_INVALID_CONTEXT -0x6380 /**< The context is invalid. For example, because it was freed. */ + +/* MBEDTLS_ERR_CIPHER_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_CIPHER_HW_ACCEL_FAILED -0x6400 /**< Cipher hardware accelerator failed. */ #define MBEDTLS_CIPHER_VARIABLE_IV_LEN 0x01 /**< Cipher accepts IVs of variable length. */ @@ -235,7 +239,8 @@ typedef struct mbedtls_cmac_context_t mbedtls_cmac_context_t; * Cipher information. Allows calling cipher functions * in a generic way. */ -typedef struct { +typedef struct mbedtls_cipher_info_t +{ /** Full cipher identifier. For example, * MBEDTLS_CIPHER_AES_256_CBC. */ @@ -276,7 +281,8 @@ typedef struct { /** * Generic cipher context. */ -typedef struct { +typedef struct mbedtls_cipher_context_t +{ /** Information about the associated cipher. */ const mbedtls_cipher_info_t *cipher_info; @@ -331,11 +337,12 @@ const int *mbedtls_cipher_list( void ); * \brief This function retrieves the cipher-information * structure associated with the given cipher name. * - * \param cipher_name Name of the cipher to search for. + * \param cipher_name Name of the cipher to search for. This must not be + * \c NULL. * * \return The cipher information structure associated with the * given \p cipher_name. - * \return NULL if the associated cipher information is not found. + * \return \c NULL if the associated cipher information is not found. */ const mbedtls_cipher_info_t *mbedtls_cipher_info_from_string( const char *cipher_name ); @@ -347,7 +354,7 @@ const mbedtls_cipher_info_t *mbedtls_cipher_info_from_string( const char *cipher * * \return The cipher information structure associated with the * given \p cipher_type. - * \return NULL if the associated cipher information is not found. + * \return \c NULL if the associated cipher information is not found. */ const mbedtls_cipher_info_t *mbedtls_cipher_info_from_type( const mbedtls_cipher_type_t cipher_type ); @@ -363,7 +370,7 @@ const mbedtls_cipher_info_t *mbedtls_cipher_info_from_type( const mbedtls_cipher * * \return The cipher information structure associated with the * given \p cipher_id. - * \return NULL if the associated cipher information is not found. + * \return \c NULL if the associated cipher information is not found. */ const mbedtls_cipher_info_t *mbedtls_cipher_info_from_values( const mbedtls_cipher_id_t cipher_id, int key_bitlen, @@ -371,6 +378,8 @@ const mbedtls_cipher_info_t *mbedtls_cipher_info_from_values( const mbedtls_ciph /** * \brief This function initializes a \p cipher_context as NONE. + * + * \param ctx The context to be initialized. This must not be \c NULL. */ void mbedtls_cipher_init( mbedtls_cipher_context_t *ctx ); @@ -378,6 +387,10 @@ void mbedtls_cipher_init( mbedtls_cipher_context_t *ctx ); * \brief This function frees and clears the cipher-specific * context of \p ctx. Freeing \p ctx itself remains the * responsibility of the caller. + * + * \param ctx The context to be freed. If this is \c NULL, the + * function has no effect, otherwise this must point to an + * initialized context. */ void mbedtls_cipher_free( mbedtls_cipher_context_t *ctx ); @@ -387,7 +400,7 @@ void mbedtls_cipher_free( mbedtls_cipher_context_t *ctx ); * structure with the appropriate values. It also clears * the structure. * - * \param ctx The context to initialize. May not be NULL. + * \param ctx The context to initialize. This must be initialized. * \param cipher_info The cipher to use. * * \return \c 0 on success. @@ -400,19 +413,22 @@ void mbedtls_cipher_free( mbedtls_cipher_context_t *ctx ); * In future versions, the caller will be required to call * mbedtls_cipher_init() on the structure first. */ -int mbedtls_cipher_setup( mbedtls_cipher_context_t *ctx, const mbedtls_cipher_info_t *cipher_info ); +int mbedtls_cipher_setup( mbedtls_cipher_context_t *ctx, + const mbedtls_cipher_info_t *cipher_info ); /** * \brief This function returns the block size of the given cipher. * - * \param ctx The context of the cipher. Must be initialized. + * \param ctx The context of the cipher. This must be initialized. * - * \return The size of the blocks of the cipher. - * \return 0 if \p ctx has not been initialized. + * \return The block size of the underlying cipher. + * \return \c 0 if \p ctx has not been initialized. */ -static inline unsigned int mbedtls_cipher_get_block_size( const mbedtls_cipher_context_t *ctx ) +static inline unsigned int mbedtls_cipher_get_block_size( + const mbedtls_cipher_context_t *ctx ) { - if( NULL == ctx || NULL == ctx->cipher_info ) + MBEDTLS_INTERNAL_VALIDATE_RET( ctx != NULL, 0 ); + if( ctx->cipher_info == NULL ) return 0; return ctx->cipher_info->block_size; @@ -422,14 +438,16 @@ static inline unsigned int mbedtls_cipher_get_block_size( const mbedtls_cipher_c * \brief This function returns the mode of operation for * the cipher. For example, MBEDTLS_MODE_CBC. * - * \param ctx The context of the cipher. Must be initialized. + * \param ctx The context of the cipher. This must be initialized. * * \return The mode of operation. * \return #MBEDTLS_MODE_NONE if \p ctx has not been initialized. */ -static inline mbedtls_cipher_mode_t mbedtls_cipher_get_cipher_mode( const mbedtls_cipher_context_t *ctx ) +static inline mbedtls_cipher_mode_t mbedtls_cipher_get_cipher_mode( + const mbedtls_cipher_context_t *ctx ) { - if( NULL == ctx || NULL == ctx->cipher_info ) + MBEDTLS_INTERNAL_VALIDATE_RET( ctx != NULL, MBEDTLS_MODE_NONE ); + if( ctx->cipher_info == NULL ) return MBEDTLS_MODE_NONE; return ctx->cipher_info->mode; @@ -439,15 +457,17 @@ static inline mbedtls_cipher_mode_t mbedtls_cipher_get_cipher_mode( const mbedtl * \brief This function returns the size of the IV or nonce * of the cipher, in Bytes. * - * \param ctx The context of the cipher. Must be initialized. + * \param ctx The context of the cipher. This must be initialized. * * \return The recommended IV size if no IV has been set. * \return \c 0 for ciphers not using an IV or a nonce. * \return The actual size if an IV has been set. */ -static inline int mbedtls_cipher_get_iv_size( const mbedtls_cipher_context_t *ctx ) +static inline int mbedtls_cipher_get_iv_size( + const mbedtls_cipher_context_t *ctx ) { - if( NULL == ctx || NULL == ctx->cipher_info ) + MBEDTLS_INTERNAL_VALIDATE_RET( ctx != NULL, 0 ); + if( ctx->cipher_info == NULL ) return 0; if( ctx->iv_size != 0 ) @@ -459,14 +479,17 @@ static inline int mbedtls_cipher_get_iv_size( const mbedtls_cipher_context_t *ct /** * \brief This function returns the type of the given cipher. * - * \param ctx The context of the cipher. Must be initialized. + * \param ctx The context of the cipher. This must be initialized. * * \return The type of the cipher. * \return #MBEDTLS_CIPHER_NONE if \p ctx has not been initialized. */ -static inline mbedtls_cipher_type_t mbedtls_cipher_get_type( const mbedtls_cipher_context_t *ctx ) +static inline mbedtls_cipher_type_t mbedtls_cipher_get_type( + const mbedtls_cipher_context_t *ctx ) { - if( NULL == ctx || NULL == ctx->cipher_info ) + MBEDTLS_INTERNAL_VALIDATE_RET( + ctx != NULL, MBEDTLS_CIPHER_NONE ); + if( ctx->cipher_info == NULL ) return MBEDTLS_CIPHER_NONE; return ctx->cipher_info->type; @@ -476,14 +499,16 @@ static inline mbedtls_cipher_type_t mbedtls_cipher_get_type( const mbedtls_ciphe * \brief This function returns the name of the given cipher * as a string. * - * \param ctx The context of the cipher. Must be initialized. + * \param ctx The context of the cipher. This must be initialized. * * \return The name of the cipher. * \return NULL if \p ctx has not been not initialized. */ -static inline const char *mbedtls_cipher_get_name( const mbedtls_cipher_context_t *ctx ) +static inline const char *mbedtls_cipher_get_name( + const mbedtls_cipher_context_t *ctx ) { - if( NULL == ctx || NULL == ctx->cipher_info ) + MBEDTLS_INTERNAL_VALIDATE_RET( ctx != NULL, 0 ); + if( ctx->cipher_info == NULL ) return 0; return ctx->cipher_info->name; @@ -492,15 +517,18 @@ static inline const char *mbedtls_cipher_get_name( const mbedtls_cipher_context_ /** * \brief This function returns the key length of the cipher. * - * \param ctx The context of the cipher. Must be initialized. + * \param ctx The context of the cipher. This must be initialized. * * \return The key length of the cipher in bits. * \return #MBEDTLS_KEY_LENGTH_NONE if ctx \p has not been * initialized. */ -static inline int mbedtls_cipher_get_key_bitlen( const mbedtls_cipher_context_t *ctx ) +static inline int mbedtls_cipher_get_key_bitlen( + const mbedtls_cipher_context_t *ctx ) { - if( NULL == ctx || NULL == ctx->cipher_info ) + MBEDTLS_INTERNAL_VALIDATE_RET( + ctx != NULL, MBEDTLS_KEY_LENGTH_NONE ); + if( ctx->cipher_info == NULL ) return MBEDTLS_KEY_LENGTH_NONE; return (int) ctx->cipher_info->key_bitlen; @@ -509,14 +537,17 @@ static inline int mbedtls_cipher_get_key_bitlen( const mbedtls_cipher_context_t /** * \brief This function returns the operation of the given cipher. * - * \param ctx The context of the cipher. Must be initialized. + * \param ctx The context of the cipher. This must be initialized. * * \return The type of operation: #MBEDTLS_ENCRYPT or #MBEDTLS_DECRYPT. * \return #MBEDTLS_OPERATION_NONE if \p ctx has not been initialized. */ -static inline mbedtls_operation_t mbedtls_cipher_get_operation( const mbedtls_cipher_context_t *ctx ) +static inline mbedtls_operation_t mbedtls_cipher_get_operation( + const mbedtls_cipher_context_t *ctx ) { - if( NULL == ctx || NULL == ctx->cipher_info ) + MBEDTLS_INTERNAL_VALIDATE_RET( + ctx != NULL, MBEDTLS_OPERATION_NONE ); + if( ctx->cipher_info == NULL ) return MBEDTLS_OPERATION_NONE; return ctx->operation; @@ -525,11 +556,11 @@ static inline mbedtls_operation_t mbedtls_cipher_get_operation( const mbedtls_ci /** * \brief This function sets the key to use with the given context. * - * \param ctx The generic cipher context. May not be NULL. Must have - * been initialized using mbedtls_cipher_info_from_type() - * or mbedtls_cipher_info_from_string(). - * \param key The key to use. - * \param key_bitlen The key length to use, in bits. + * \param ctx The generic cipher context. This must be initialized and + * bound to a cipher information structure. + * \param key The key to use. This must be a readable buffer of at + * least \p key_bitlen Bits. + * \param key_bitlen The key length to use, in Bits. * \param operation The operation that the key will be used for: * #MBEDTLS_ENCRYPT or #MBEDTLS_DECRYPT. * @@ -538,8 +569,10 @@ static inline mbedtls_operation_t mbedtls_cipher_get_operation( const mbedtls_ci * parameter-verification failure. * \return A cipher-specific error code on failure. */ -int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx, const unsigned char *key, - int key_bitlen, const mbedtls_operation_t operation ); +int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx, + const unsigned char *key, + int key_bitlen, + const mbedtls_operation_t operation ); #if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING) /** @@ -548,7 +581,8 @@ int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx, const unsigned char *k * * The default passing mode is PKCS7 padding. * - * \param ctx The generic cipher context. + * \param ctx The generic cipher context. This must be initialized and + * bound to a cipher information structure. * \param mode The padding mode. * * \return \c 0 on success. @@ -557,7 +591,8 @@ int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx, const unsigned char *k * \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA if the cipher mode * does not support padding. */ -int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx, mbedtls_cipher_padding_t mode ); +int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx, + mbedtls_cipher_padding_t mode ); #endif /* MBEDTLS_CIPHER_MODE_WITH_PADDING */ /** @@ -567,8 +602,10 @@ int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx, mbedtls_ciph * \note Some ciphers do not use IVs nor nonce. For these * ciphers, this function has no effect. * - * \param ctx The generic cipher context. - * \param iv The IV to use, or NONCE_COUNTER for CTR-mode ciphers. + * \param ctx The generic cipher context. This must be initialized and + * bound to a cipher information structure. + * \param iv The IV to use, or NONCE_COUNTER for CTR-mode ciphers. This + * must be a readable buffer of at least \p iv_len Bytes. * \param iv_len The IV length for ciphers with variable-size IV. * This parameter is discarded by ciphers with fixed-size IV. * @@ -577,12 +614,13 @@ int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx, mbedtls_ciph * parameter-verification failure. */ int mbedtls_cipher_set_iv( mbedtls_cipher_context_t *ctx, - const unsigned char *iv, size_t iv_len ); + const unsigned char *iv, + size_t iv_len ); /** * \brief This function resets the cipher state. * - * \param ctx The generic cipher context. + * \param ctx The generic cipher context. This must be initialized. * * \return \c 0 on success. * \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on @@ -594,11 +632,13 @@ int mbedtls_cipher_reset( mbedtls_cipher_context_t *ctx ); /** * \brief This function adds additional data for AEAD ciphers. * Currently supported with GCM and ChaCha20+Poly1305. - * Must be called exactly once, after mbedtls_cipher_reset(). + * This must be called exactly once, after + * mbedtls_cipher_reset(). * - * \param ctx The generic cipher context. - * \param ad The additional data to use. - * \param ad_len the Length of \p ad. + * \param ctx The generic cipher context. This must be initialized. + * \param ad The additional data to use. This must be a readable + * buffer of at least \p ad_len Bytes. + * \param ad_len the Length of \p ad Bytes. * * \return \c 0 on success. * \return A specific error code on failure. @@ -622,14 +662,17 @@ int mbedtls_cipher_update_ad( mbedtls_cipher_context_t *ctx, * mbedtls_cipher_finish(), must have \p ilen as a * multiple of the block size of the cipher. * - * \param ctx The generic cipher context. - * \param input The buffer holding the input data. + * \param ctx The generic cipher context. This must be initialized and + * bound to a key. + * \param input The buffer holding the input data. This must be a + * readable buffer of at least \p ilen Bytes. * \param ilen The length of the input data. - * \param output The buffer for the output data. Must be able to hold at - * least \p ilen + block_size. Must not be the same buffer - * as input. + * \param output The buffer for the output data. This must be able to + * hold at least `ilen + block_size`. This must not be the + * same buffer as \p input. * \param olen The length of the output data, to be updated with the - * actual number of Bytes written. + * actual number of Bytes written. This must not be + * \c NULL. * * \return \c 0 on success. * \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on @@ -647,9 +690,12 @@ int mbedtls_cipher_update( mbedtls_cipher_context_t *ctx, const unsigned char *i * contained in it is padded to the size of * the last block, and written to the \p output buffer. * - * \param ctx The generic cipher context. - * \param output The buffer to write data to. Needs block_size available. + * \param ctx The generic cipher context. This must be initialized and + * bound to a key. + * \param output The buffer to write data to. This needs to be a writable + * buffer of at least \p block_size Bytes. * \param olen The length of the data written to the \p output buffer. + * This may not be \c NULL. * * \return \c 0 on success. * \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on @@ -667,10 +713,14 @@ int mbedtls_cipher_finish( mbedtls_cipher_context_t *ctx, /** * \brief This function writes a tag for AEAD ciphers. * Currently supported with GCM and ChaCha20+Poly1305. - * Must be called after mbedtls_cipher_finish(). - * - * \param ctx The generic cipher context. - * \param tag The buffer to write the tag to. + * This must be called after mbedtls_cipher_finish(). + * + * \param ctx The generic cipher context. This must be initialized, + * bound to a key, and have just completed a cipher + * operation through mbedtls_cipher_finish() the tag for + * which should be written. + * \param tag The buffer to write the tag to. This must be a writable + * buffer of at least \p tag_len Bytes. * \param tag_len The length of the tag to write. * * \return \c 0 on success. @@ -682,10 +732,11 @@ int mbedtls_cipher_write_tag( mbedtls_cipher_context_t *ctx, /** * \brief This function checks the tag for AEAD ciphers. * Currently supported with GCM and ChaCha20+Poly1305. - * Must be called after mbedtls_cipher_finish(). + * This must be called after mbedtls_cipher_finish(). * - * \param ctx The generic cipher context. - * \param tag The buffer holding the tag. + * \param ctx The generic cipher context. This must be initialized. + * \param tag The buffer holding the tag. This must be a readable + * buffer of at least \p tag_len Bytes. * \param tag_len The length of the tag to check. * * \return \c 0 on success. @@ -699,18 +750,22 @@ int mbedtls_cipher_check_tag( mbedtls_cipher_context_t *ctx, * \brief The generic all-in-one encryption/decryption function, * for all ciphers except AEAD constructs. * - * \param ctx The generic cipher context. + * \param ctx The generic cipher context. This must be initialized. * \param iv The IV to use, or NONCE_COUNTER for CTR-mode ciphers. + * This must be a readable buffer of at least \p iv_len + * Bytes. * \param iv_len The IV length for ciphers with variable-size IV. * This parameter is discarded by ciphers with fixed-size * IV. - * \param input The buffer holding the input data. - * \param ilen The length of the input data. - * \param output The buffer for the output data. Must be able to hold at - * least \p ilen + block_size. Must not be the same buffer - * as input. + * \param input The buffer holding the input data. This must be a + * readable buffer of at least \p ilen Bytes. + * \param ilen The length of the input data in Bytes. + * \param output The buffer for the output data. This must be able to + * hold at least `ilen + block_size`. This must not be the + * same buffer as \p input. * \param olen The length of the output data, to be updated with the - * actual number of Bytes written. + * actual number of Bytes written. This must not be + * \c NULL. * * \note Some ciphers do not use IVs nor nonce. For these * ciphers, use \p iv = NULL and \p iv_len = 0. @@ -733,19 +788,26 @@ int mbedtls_cipher_crypt( mbedtls_cipher_context_t *ctx, /** * \brief The generic autenticated encryption (AEAD) function. * - * \param ctx The generic cipher context. + * \param ctx The generic cipher context. This must be initialized and + * bound to a key. * \param iv The IV to use, or NONCE_COUNTER for CTR-mode ciphers. + * This must be a readable buffer of at least \p iv_len + * Bytes. * \param iv_len The IV length for ciphers with variable-size IV. * This parameter is discarded by ciphers with fixed-size IV. - * \param ad The additional data to authenticate. + * \param ad The additional data to authenticate. This must be a + * readable buffer of at least \p ad_len Bytes. * \param ad_len The length of \p ad. - * \param input The buffer holding the input data. + * \param input The buffer holding the input data. This must be a + * readable buffer of at least \p ilen Bytes. * \param ilen The length of the input data. - * \param output The buffer for the output data. - * Must be able to hold at least \p ilen. + * \param output The buffer for the output data. This must be able to + * hold at least \p ilen Bytes. * \param olen The length of the output data, to be updated with the - * actual number of Bytes written. - * \param tag The buffer for the authentication tag. + * actual number of Bytes written. This must not be + * \c NULL. + * \param tag The buffer for the authentication tag. This must be a + * writable buffer of at least \p tag_len Bytes. * \param tag_len The desired length of the authentication tag. * * \return \c 0 on success. @@ -767,19 +829,26 @@ int mbedtls_cipher_auth_encrypt( mbedtls_cipher_context_t *ctx, * is zeroed out to prevent the unauthentic plaintext being * used, making this interface safer. * - * \param ctx The generic cipher context. + * \param ctx The generic cipher context. This must be initialized and + * and bound to a key. * \param iv The IV to use, or NONCE_COUNTER for CTR-mode ciphers. + * This must be a readable buffer of at least \p iv_len + * Bytes. * \param iv_len The IV length for ciphers with variable-size IV. * This parameter is discarded by ciphers with fixed-size IV. - * \param ad The additional data to be authenticated. + * \param ad The additional data to be authenticated. This must be a + * readable buffer of at least \p ad_len Bytes. * \param ad_len The length of \p ad. - * \param input The buffer holding the input data. + * \param input The buffer holding the input data. This must be a + * readable buffer of at least \p ilen Bytes. * \param ilen The length of the input data. * \param output The buffer for the output data. - * Must be able to hold at least \p ilen. + * This must be able to hold at least \p ilen Bytes. * \param olen The length of the output data, to be updated with the - * actual number of Bytes written. - * \param tag The buffer holding the authentication tag. + * actual number of Bytes written. This must not be + * \c NULL. + * \param tag The buffer holding the authentication tag. This must be + * a readable buffer of at least \p tag_len Bytes. * \param tag_len The length of the authentication tag. * * \return \c 0 on success. diff --git a/thirdparty/mbedtls/include/mbedtls/cmac.h b/thirdparty/mbedtls/include/mbedtls/cmac.h index a4fd552565..c196793531 100644 --- a/thirdparty/mbedtls/include/mbedtls/cmac.h +++ b/thirdparty/mbedtls/include/mbedtls/cmac.h @@ -34,6 +34,7 @@ extern "C" { #endif +/* MBEDTLS_ERR_CMAC_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_CMAC_HW_ACCEL_FAILED -0x007A /**< CMAC hardware accelerator failed. */ #define MBEDTLS_AES_BLOCK_SIZE 16 diff --git a/thirdparty/mbedtls/include/mbedtls/config.h b/thirdparty/mbedtls/include/mbedtls/config.h index 6daa8d103b..91cc5bddf8 100644 --- a/thirdparty/mbedtls/include/mbedtls/config.h +++ b/thirdparty/mbedtls/include/mbedtls/config.h @@ -137,12 +137,21 @@ /** * \def MBEDTLS_HAVE_TIME_DATE * - * System has time.h and time(), gmtime() and the clock is correct. + * System has time.h, time(), and an implementation for + * mbedtls_platform_gmtime_r() (see below). * The time needs to be correct (not necesarily very accurate, but at least * the date should be correct). This is used to verify the validity period of * X.509 certificates. * * Comment if your system does not have a correct clock. + * + * \note mbedtls_platform_gmtime_r() is an abstraction in platform_util.h that + * behaves similarly to the gmtime_r() function from the C standard. Refer to + * the documentation for mbedtls_platform_gmtime_r() for more information. + * + * \note It is possible to configure an implementation for + * mbedtls_platform_gmtime_r() at compile-time by using the macro + * MBEDTLS_PLATFORM_GMTIME_R_ALT. */ #define MBEDTLS_HAVE_TIME_DATE @@ -247,6 +256,48 @@ */ //#define MBEDTLS_DEPRECATED_REMOVED +/** + * \def MBEDTLS_CHECK_PARAMS + * + * This configuration option controls whether the library validates more of + * the parameters passed to it. + * + * When this flag is not defined, the library only attempts to validate an + * input parameter if: (1) they may come from the outside world (such as the + * network, the filesystem, etc.) or (2) not validating them could result in + * internal memory errors such as overflowing a buffer controlled by the + * library. On the other hand, it doesn't attempt to validate parameters whose + * values are fully controlled by the application (such as pointers). + * + * When this flag is defined, the library additionally attempts to validate + * parameters that are fully controlled by the application, and should always + * be valid if the application code is fully correct and trusted. + * + * For example, when a function accepts as input a pointer to a buffer that may + * contain untrusted data, and its documentation mentions that this pointer + * must not be NULL: + * - the pointer is checked to be non-NULL only if this option is enabled + * - the content of the buffer is always validated + * + * When this flag is defined, if a library function receives a parameter that + * is invalid, it will: + * - invoke the macro MBEDTLS_PARAM_FAILED() which by default expands to a + * call to the function mbedtls_param_failed() + * - immediately return (with a specific error code unless the function + * returns void and can't communicate an error). + * + * When defining this flag, you also need to: + * - either provide a definition of the function mbedtls_param_failed() in + * your application (see platform_util.h for its prototype) as the library + * calls that function, but does not provide a default definition for it, + * - or provide a different definition of the macro MBEDTLS_PARAM_FAILED() + * below if the above mechanism is not flexible enough to suit your needs. + * See the documentation of this macro later in this file. + * + * Uncomment to enable validation of application-controlled parameters. + */ +//#define MBEDTLS_CHECK_PARAMS + /* \} name SECTION: System support */ /** @@ -405,11 +456,11 @@ * unsigned char mbedtls_internal_ecp_grp_capable( * const mbedtls_ecp_group *grp ) * int mbedtls_internal_ecp_init( const mbedtls_ecp_group *grp ) - * void mbedtls_internal_ecp_deinit( const mbedtls_ecp_group *grp ) + * void mbedtls_internal_ecp_free( const mbedtls_ecp_group *grp ) * The mbedtls_internal_ecp_grp_capable function should return 1 if the * replacement functions implement arithmetic for the given group and 0 * otherwise. - * The functions mbedtls_internal_ecp_init and mbedtls_internal_ecp_deinit are + * The functions mbedtls_internal_ecp_init and mbedtls_internal_ecp_free are * called before and after each point operation and provide an opportunity to * implement optimized set up and tear down instructions. * @@ -669,6 +720,30 @@ #define MBEDTLS_ECP_NIST_OPTIM /** + * \def MBEDTLS_ECP_RESTARTABLE + * + * Enable "non-blocking" ECC operations that can return early and be resumed. + * + * This allows various functions to pause by returning + * #MBEDTLS_ERR_ECP_IN_PROGRESS (or, for functions in the SSL module, + * #MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) and then be called later again in + * order to further progress and eventually complete their operation. This is + * controlled through mbedtls_ecp_set_max_ops() which limits the maximum + * number of ECC operations a function may perform before pausing; see + * mbedtls_ecp_set_max_ops() for more information. + * + * This is useful in non-threaded environments if you want to avoid blocking + * for too long on ECC (and, hence, X.509 or SSL/TLS) operations. + * + * Uncomment this macro to enable restartable ECC computations. + * + * \note This option only works with the default software implementation of + * elliptic curve functionality. It is incompatible with + * MBEDTLS_ECP_ALT, MBEDTLS_ECDH_XXX_ALT and MBEDTLS_ECDSA_XXX_ALT. + */ +//#define MBEDTLS_ECP_RESTARTABLE + +/** * \def MBEDTLS_ECDSA_DETERMINISTIC * * Enable deterministic ECDSA (RFC 6979). @@ -1279,7 +1354,7 @@ /** * \def MBEDTLS_SSL_RENEGOTIATION * - * Disable support for TLS renegotiation. + * Enable support for TLS renegotiation. * * The two main uses of renegotiation are (1) refresh keys on long-lived * connections and (2) client authentication after the initial handshake. @@ -2018,14 +2093,16 @@ /** * \def MBEDTLS_CTR_DRBG_C * - * Enable the CTR_DRBG AES-256-based random generator. + * Enable the CTR_DRBG AES-based random generator. + * The CTR_DRBG generator uses AES-256 by default. + * To use AES-128 instead, enable MBEDTLS_CTR_DRBG_USE_128_BIT_KEY below. * * Module: library/ctr_drbg.c * Caller: * * Requires: MBEDTLS_AES_C * - * This module provides the CTR_DRBG AES-256 random number generator. + * This module provides the CTR_DRBG AES random number generator. */ #define MBEDTLS_CTR_DRBG_C @@ -2389,6 +2466,20 @@ #define MBEDTLS_OID_C /** + * \def MBEDTLS_PADLOCK_C + * + * Enable VIA Padlock support on x86. + * + * Module: library/padlock.c + * Caller: library/aes.c + * + * Requires: MBEDTLS_HAVE_ASM + * + * This modules adds support for the VIA PadLock on x86. + */ +#define MBEDTLS_PADLOCK_C + +/** * \def MBEDTLS_PEM_PARSE_C * * Enable PEM decoding / parsing. @@ -2896,6 +2987,7 @@ //#define MBEDTLS_CTR_DRBG_MAX_INPUT 256 /**< Maximum number of additional input bytes */ //#define MBEDTLS_CTR_DRBG_MAX_REQUEST 1024 /**< Maximum number of requested bytes per call */ //#define MBEDTLS_CTR_DRBG_MAX_SEED_INPUT 384 /**< Maximum size of (re)seed buffer */ +//#define MBEDTLS_CTR_DRBG_USE_128_BIT_KEY /**< Use 128-bit key for CTR_DRBG - may reduce security (see ctr_drbg.h) */ /* HMAC_DRBG options */ //#define MBEDTLS_HMAC_DRBG_RESEED_INTERVAL 10000 /**< Interval before reseed is performed by default */ @@ -2946,6 +3038,36 @@ //#define MBEDTLS_PLATFORM_NV_SEED_READ_MACRO mbedtls_platform_std_nv_seed_read /**< Default nv_seed_read function to use, can be undefined */ //#define MBEDTLS_PLATFORM_NV_SEED_WRITE_MACRO mbedtls_platform_std_nv_seed_write /**< Default nv_seed_write function to use, can be undefined */ +/** + * \brief This macro is invoked by the library when an invalid parameter + * is detected that is only checked with MBEDTLS_CHECK_PARAMS + * (see the documentation of that option for context). + * + * When you leave this undefined here, a default definition is + * provided that invokes the function mbedtls_param_failed(), + * which is declared in platform_util.h for the benefit of the + * library, but that you need to define in your application. + * + * When you define this here, this replaces the default + * definition in platform_util.h (which no longer declares the + * function mbedtls_param_failed()) and it is your responsibility + * to make sure this macro expands to something suitable (in + * particular, that all the necessary declarations are visible + * from within the library - you can ensure that by providing + * them in this file next to the macro definition). + * + * Note that you may define this macro to expand to nothing, in + * which case you don't have to worry about declarations or + * definitions. However, you will then be notified about invalid + * parameters only in non-void functions, and void function will + * just silently return early on invalid parameters, which + * partially negates the benefits of enabling + * #MBEDTLS_CHECK_PARAMS in the first place, so is discouraged. + * + * \param cond The expression that should evaluate to true, but doesn't. + */ +//#define MBEDTLS_PARAM_FAILED( cond ) assert( cond ) + /* SSL Cache options */ //#define MBEDTLS_SSL_CACHE_DEFAULT_TIMEOUT 86400 /**< 1 day */ //#define MBEDTLS_SSL_CACHE_DEFAULT_MAX_ENTRIES 50 /**< Maximum entries in cache */ @@ -2954,31 +3076,65 @@ /** \def MBEDTLS_SSL_MAX_CONTENT_LEN * - * Maximum fragment length in bytes. + * Maximum length (in bytes) of incoming and outgoing plaintext fragments. + * + * This determines the size of both the incoming and outgoing TLS I/O buffers + * in such a way that both are capable of holding the specified amount of + * plaintext data, regardless of the protection mechanism used. * - * Determines the size of both the incoming and outgoing TLS I/O buffers. + * To configure incoming and outgoing I/O buffers separately, use + * #MBEDTLS_SSL_IN_CONTENT_LEN and #MBEDTLS_SSL_OUT_CONTENT_LEN, + * which overwrite the value set by this option. * - * Uncommenting MBEDTLS_SSL_IN_CONTENT_LEN and/or MBEDTLS_SSL_OUT_CONTENT_LEN - * will override this length by setting maximum incoming and/or outgoing - * fragment length, respectively. + * \note When using a value less than the default of 16KB on the client, it is + * recommended to use the Maximum Fragment Length (MFL) extension to + * inform the server about this limitation. On the server, there + * is no supported, standardized way of informing the client about + * restriction on the maximum size of incoming messages, and unless + * the limitation has been communicated by other means, it is recommended + * to only change the outgoing buffer size #MBEDTLS_SSL_OUT_CONTENT_LEN + * while keeping the default value of 16KB for the incoming buffer. + * + * Uncomment to set the maximum plaintext size of both + * incoming and outgoing I/O buffers. */ //#define MBEDTLS_SSL_MAX_CONTENT_LEN 16384 /** \def MBEDTLS_SSL_IN_CONTENT_LEN * - * Maximum incoming fragment length in bytes. + * Maximum length (in bytes) of incoming plaintext fragments. + * + * This determines the size of the incoming TLS I/O buffer in such a way + * that it is capable of holding the specified amount of plaintext data, + * regardless of the protection mechanism used. + * + * If this option is undefined, it inherits its value from + * #MBEDTLS_SSL_MAX_CONTENT_LEN. + * + * \note When using a value less than the default of 16KB on the client, it is + * recommended to use the Maximum Fragment Length (MFL) extension to + * inform the server about this limitation. On the server, there + * is no supported, standardized way of informing the client about + * restriction on the maximum size of incoming messages, and unless + * the limitation has been communicated by other means, it is recommended + * to only change the outgoing buffer size #MBEDTLS_SSL_OUT_CONTENT_LEN + * while keeping the default value of 16KB for the incoming buffer. * - * Uncomment to set the size of the inward TLS buffer independently of the - * outward buffer. + * Uncomment to set the maximum plaintext size of the incoming I/O buffer + * independently of the outgoing I/O buffer. */ //#define MBEDTLS_SSL_IN_CONTENT_LEN 16384 /** \def MBEDTLS_SSL_OUT_CONTENT_LEN * - * Maximum outgoing fragment length in bytes. + * Maximum length (in bytes) of outgoing plaintext fragments. * - * Uncomment to set the size of the outward TLS buffer independently of the - * inward buffer. + * This determines the size of the outgoing TLS I/O buffer in such a way + * that it is capable of holding the specified amount of plaintext data, + * regardless of the protection mechanism used. + * + * If this option undefined, it inherits its value from + * #MBEDTLS_SSL_MAX_CONTENT_LEN. * * It is possible to save RAM by setting a smaller outward buffer, while keeping * the default inward 16384 byte buffer to conform to the TLS specification. @@ -2988,14 +3144,28 @@ * The specific size requirement depends on the configured ciphers and any * certificate data which is sent during the handshake. * - * For absolute minimum RAM usage, it's best to enable - * MBEDTLS_SSL_MAX_FRAGMENT_LENGTH and reduce MBEDTLS_SSL_MAX_CONTENT_LEN. This - * reduces both incoming and outgoing buffer sizes. However this is only - * guaranteed if the other end of the connection also supports the TLS - * max_fragment_len extension. Otherwise the connection may fail. + * Uncomment to set the maximum plaintext size of the outgoing I/O buffer + * independently of the incoming I/O buffer. */ //#define MBEDTLS_SSL_OUT_CONTENT_LEN 16384 +/** \def MBEDTLS_SSL_DTLS_MAX_BUFFERING + * + * Maximum number of heap-allocated bytes for the purpose of + * DTLS handshake message reassembly and future message buffering. + * + * This should be at least 9/8 * MBEDTLSSL_IN_CONTENT_LEN + * to account for a reassembled handshake message of maximum size, + * together with its reassembly bitmap. + * + * A value of 2 * MBEDTLS_SSL_IN_CONTENT_LEN (32768 by default) + * should be sufficient for all practical situations as it allows + * to reassembly a large handshake message (such as a certificate) + * while buffering multiple smaller handshake messages. + * + */ +//#define MBEDTLS_SSL_DTLS_MAX_BUFFERING 32768 + //#define MBEDTLS_SSL_DEFAULT_TICKET_LIFETIME 86400 /**< Lifetime of session tickets (if enabled) */ //#define MBEDTLS_PSK_MAX_LEN 32 /**< Max size of TLS pre-shared keys, in bytes (default 256 bits) */ //#define MBEDTLS_SSL_COOKIE_TIMEOUT 60 /**< Default expiration delay of DTLS cookies, in seconds if HAVE_TIME, or in number of cookies issued */ @@ -3069,25 +3239,33 @@ */ //#define MBEDTLS_PLATFORM_ZEROIZE_ALT -/* \} name SECTION: Customisation configuration options */ - -/* Target and application specific configurations */ -//#define YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE "target_config.h" +/** + * Uncomment the macro to let Mbed TLS use your alternate implementation of + * mbedtls_platform_gmtime_r(). This replaces the default implementation in + * platform_util.c. + * + * gmtime() is not a thread-safe function as defined in the C standard. The + * library will try to use safer implementations of this function, such as + * gmtime_r() when available. However, if Mbed TLS cannot identify the target + * system, the implementation of mbedtls_platform_gmtime_r() will default to + * using the standard gmtime(). In this case, calls from the library to + * gmtime() will be guarded by the global mutex mbedtls_threading_gmtime_mutex + * if MBEDTLS_THREADING_C is enabled. We recommend that calls from outside the + * library are also guarded with this mutex to avoid race conditions. However, + * if the macro MBEDTLS_PLATFORM_GMTIME_R_ALT is defined, Mbed TLS will + * unconditionally use the implementation for mbedtls_platform_gmtime_r() + * supplied at compile time. + */ +//#define MBEDTLS_PLATFORM_GMTIME_R_ALT -#if defined(TARGET_LIKE_MBED) && defined(YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE) -#include YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE -#endif +/* \} name SECTION: Customisation configuration options */ -/* +/* Target and application specific configurations + * * Allow user to override any previous default. * - * Use two macro names for that, as: - * - with yotta the prefix YOTTA_CFG_ is forced - * - without yotta is looks weird to have a YOTTA prefix. */ -#if defined(YOTTA_CFG_MBEDTLS_USER_CONFIG_FILE) -#include YOTTA_CFG_MBEDTLS_USER_CONFIG_FILE -#elif defined(MBEDTLS_USER_CONFIG_FILE) +#if defined(MBEDTLS_USER_CONFIG_FILE) #include MBEDTLS_USER_CONFIG_FILE #endif diff --git a/thirdparty/mbedtls/include/mbedtls/ctr_drbg.h b/thirdparty/mbedtls/include/mbedtls/ctr_drbg.h index 3835d7299b..10f9389d9f 100644 --- a/thirdparty/mbedtls/include/mbedtls/ctr_drbg.h +++ b/thirdparty/mbedtls/include/mbedtls/ctr_drbg.h @@ -8,8 +8,11 @@ * Recommendation for Random Number Generation Using Deterministic Random * Bit Generators</em>. * - * The Mbed TLS implementation of CTR_DRBG uses AES-256 as the underlying - * block cipher. + * The Mbed TLS implementation of CTR_DRBG uses AES-256 (default) or AES-128 + * as the underlying block cipher. + * + * \warning Using 128-bit keys for CTR_DRBG limits the security of generated + * keys and operations that use random values generated to 128-bit security. */ /* * Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved @@ -45,7 +48,13 @@ #define MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR -0x003A /**< Read or write error in file. */ #define MBEDTLS_CTR_DRBG_BLOCKSIZE 16 /**< The block size used by the cipher. */ -#define MBEDTLS_CTR_DRBG_KEYSIZE 32 /**< The key size used by the cipher. */ + +#if defined(MBEDTLS_CTR_DRBG_USE_128_BIT_KEY) +#define MBEDTLS_CTR_DRBG_KEYSIZE 16 /**< The key size used by the cipher (compile-time choice: 128 bits). */ +#else +#define MBEDTLS_CTR_DRBG_KEYSIZE 32 /**< The key size used by the cipher (compile-time choice: 256 bits). */ +#endif + #define MBEDTLS_CTR_DRBG_KEYBITS ( MBEDTLS_CTR_DRBG_KEYSIZE * 8 ) /**< The key size for the DRBG operation, in bits. */ #define MBEDTLS_CTR_DRBG_SEEDLEN ( MBEDTLS_CTR_DRBG_KEYSIZE + MBEDTLS_CTR_DRBG_BLOCKSIZE ) /**< The seed length, calculated as (counter + AES key). */ @@ -108,7 +117,7 @@ extern "C" { /** * \brief The CTR_DRBG context structure. */ -typedef struct +typedef struct mbedtls_ctr_drbg_context { unsigned char counter[16]; /*!< The counter (V). */ int reseed_counter; /*!< The reseed counter. */ @@ -230,18 +239,20 @@ int mbedtls_ctr_drbg_reseed( mbedtls_ctr_drbg_context *ctx, /** * \brief This function updates the state of the CTR_DRBG context. * - * \note If \p add_len is greater than - * #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT, only the first - * #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT Bytes are used. - * The remaining Bytes are silently discarded. - * * \param ctx The CTR_DRBG context. * \param additional The data to update the state with. - * \param add_len Length of \p additional data. - * + * \param add_len Length of \p additional in bytes. This must be at + * most #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT. + * + * \return \c 0 on success. + * \return #MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG if + * \p add_len is more than + * #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT. + * \return An error from the underlying AES cipher on failure. */ -void mbedtls_ctr_drbg_update( mbedtls_ctr_drbg_context *ctx, - const unsigned char *additional, size_t add_len ); +int mbedtls_ctr_drbg_update_ret( mbedtls_ctr_drbg_context *ctx, + const unsigned char *additional, + size_t add_len ); /** * \brief This function updates a CTR_DRBG instance with additional @@ -281,6 +292,35 @@ int mbedtls_ctr_drbg_random_with_add( void *p_rng, int mbedtls_ctr_drbg_random( void *p_rng, unsigned char *output, size_t output_len ); + +#if ! defined(MBEDTLS_DEPRECATED_REMOVED) +#if defined(MBEDTLS_DEPRECATED_WARNING) +#define MBEDTLS_DEPRECATED __attribute__((deprecated)) +#else +#define MBEDTLS_DEPRECATED +#endif +/** + * \brief This function updates the state of the CTR_DRBG context. + * + * \deprecated Superseded by mbedtls_ctr_drbg_update_ret() + * in 2.16.0. + * + * \note If \p add_len is greater than + * #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT, only the first + * #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT Bytes are used. + * The remaining Bytes are silently discarded. + * + * \param ctx The CTR_DRBG context. + * \param additional The data to update the state with. + * \param add_len Length of \p additional data. + */ +MBEDTLS_DEPRECATED void mbedtls_ctr_drbg_update( + mbedtls_ctr_drbg_context *ctx, + const unsigned char *additional, + size_t add_len ); +#undef MBEDTLS_DEPRECATED +#endif /* !MBEDTLS_DEPRECATED_REMOVED */ + #if defined(MBEDTLS_FS_IO) /** * \brief This function writes a seed file. diff --git a/thirdparty/mbedtls/include/mbedtls/debug.h b/thirdparty/mbedtls/include/mbedtls/debug.h index ef8db67ff1..736444bb76 100644 --- a/thirdparty/mbedtls/include/mbedtls/debug.h +++ b/thirdparty/mbedtls/include/mbedtls/debug.h @@ -65,6 +65,11 @@ mbedtls_debug_print_crt( ssl, level, __FILE__, __LINE__, text, crt ) #endif +#if defined(MBEDTLS_ECDH_C) +#define MBEDTLS_SSL_DEBUG_ECDH( level, ecdh, attr ) \ + mbedtls_debug_printf_ecdh( ssl, level, __FILE__, __LINE__, ecdh, attr ) +#endif + #else /* MBEDTLS_DEBUG_C */ #define MBEDTLS_SSL_DEBUG_MSG( level, args ) do { } while( 0 ) @@ -73,6 +78,7 @@ #define MBEDTLS_SSL_DEBUG_MPI( level, text, X ) do { } while( 0 ) #define MBEDTLS_SSL_DEBUG_ECP( level, text, X ) do { } while( 0 ) #define MBEDTLS_SSL_DEBUG_CRT( level, text, crt ) do { } while( 0 ) +#define MBEDTLS_SSL_DEBUG_ECDH( level, ecdh, attr ) do { } while( 0 ) #endif /* MBEDTLS_DEBUG_C */ @@ -221,6 +227,36 @@ void mbedtls_debug_print_crt( const mbedtls_ssl_context *ssl, int level, const char *text, const mbedtls_x509_crt *crt ); #endif +#if defined(MBEDTLS_ECDH_C) +typedef enum +{ + MBEDTLS_DEBUG_ECDH_Q, + MBEDTLS_DEBUG_ECDH_QP, + MBEDTLS_DEBUG_ECDH_Z, +} mbedtls_debug_ecdh_attr; + +/** + * \brief Print a field of the ECDH structure in the SSL context to the debug + * output. This function is always used through the + * MBEDTLS_SSL_DEBUG_ECDH() macro, which supplies the ssl context, file + * and line number parameters. + * + * \param ssl SSL context + * \param level error level of the debug message + * \param file file the error has occurred in + * \param line line number the error has occurred in + * \param ecdh the ECDH context + * \param attr the identifier of the attribute being output + * + * \attention This function is intended for INTERNAL usage within the + * library only. + */ +void mbedtls_debug_printf_ecdh( const mbedtls_ssl_context *ssl, int level, + const char *file, int line, + const mbedtls_ecdh_context *ecdh, + mbedtls_debug_ecdh_attr attr ); +#endif + #ifdef __cplusplus } #endif diff --git a/thirdparty/mbedtls/include/mbedtls/des.h b/thirdparty/mbedtls/include/mbedtls/des.h index 6eb7d03bae..d62042d14e 100644 --- a/thirdparty/mbedtls/include/mbedtls/des.h +++ b/thirdparty/mbedtls/include/mbedtls/des.h @@ -42,6 +42,8 @@ #define MBEDTLS_DES_DECRYPT 0 #define MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH -0x0032 /**< The data input has an invalid length. */ + +/* MBEDTLS_ERR_DES_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_DES_HW_ACCEL_FAILED -0x0033 /**< DES hardware accelerator failed. */ #define MBEDTLS_DES_KEY_SIZE 8 @@ -61,7 +63,7 @@ extern "C" { * security risk. We recommend considering stronger ciphers * instead. */ -typedef struct +typedef struct mbedtls_des_context { uint32_t sk[32]; /*!< DES subkeys */ } @@ -70,7 +72,7 @@ mbedtls_des_context; /** * \brief Triple-DES context structure */ -typedef struct +typedef struct mbedtls_des3_context { uint32_t sk[96]; /*!< 3DES subkeys */ } diff --git a/thirdparty/mbedtls/include/mbedtls/dhm.h b/thirdparty/mbedtls/include/mbedtls/dhm.h index 75317a8e6d..a5452c199a 100644 --- a/thirdparty/mbedtls/include/mbedtls/dhm.h +++ b/thirdparty/mbedtls/include/mbedtls/dhm.h @@ -84,7 +84,10 @@ #define MBEDTLS_ERR_DHM_INVALID_FORMAT -0x3380 /**< The ASN.1 data is not formatted correctly. */ #define MBEDTLS_ERR_DHM_ALLOC_FAILED -0x3400 /**< Allocation of memory failed. */ #define MBEDTLS_ERR_DHM_FILE_IO_ERROR -0x3480 /**< Read or write of file failed. */ + +/* MBEDTLS_ERR_DHM_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_DHM_HW_ACCEL_FAILED -0x3500 /**< DHM hardware accelerator failed. */ + #define MBEDTLS_ERR_DHM_SET_GROUP_FAILED -0x3580 /**< Setting the modulus and generator failed. */ #ifdef __cplusplus @@ -96,7 +99,7 @@ extern "C" { /** * \brief The DHM context structure. */ -typedef struct +typedef struct mbedtls_dhm_context { size_t len; /*!< The size of \p P in Bytes. */ mbedtls_mpi P; /*!< The prime modulus. */ @@ -124,9 +127,15 @@ mbedtls_dhm_context; void mbedtls_dhm_init( mbedtls_dhm_context *ctx ); /** - * \brief This function parses the ServerKeyExchange parameters. + * \brief This function parses the DHM parameters in a + * TLS ServerKeyExchange handshake message + * (DHM modulus, generator, and public key). * - * \param ctx The DHM context. + * \note In a TLS handshake, this is the how the client + * sets up its DHM context from the server's public + * DHM key material. + * + * \param ctx The DHM context to use. This must be initialized. * \param p On input, *p must be the start of the input buffer. * On output, *p is updated to point to the end of the data * that has been read. On success, this is the first byte @@ -140,31 +149,37 @@ void mbedtls_dhm_init( mbedtls_dhm_context *ctx ); * \return An \c MBEDTLS_ERR_DHM_XXX error code on failure. */ int mbedtls_dhm_read_params( mbedtls_dhm_context *ctx, - unsigned char **p, - const unsigned char *end ); + unsigned char **p, + const unsigned char *end ); /** - * \brief This function sets up and writes the ServerKeyExchange - * parameters. - * - * \note The destination buffer must be large enough to hold - * the reduced binary presentation of the modulus, the generator - * and the public key, each wrapped with a 2-byte length field. - * It is the responsibility of the caller to ensure that enough - * space is available. Refer to \c mbedtls_mpi_size to computing - * the byte-size of an MPI. + * \brief This function generates a DHM key pair and exports its + * public part together with the DHM parameters in the format + * used in a TLS ServerKeyExchange handshake message. * - * \note This function assumes that \c ctx->P and \c ctx->G - * have already been properly set. For that, use + * \note This function assumes that the DHM parameters \c ctx->P + * and \c ctx->G have already been properly set. For that, use * mbedtls_dhm_set_group() below in conjunction with * mbedtls_mpi_read_binary() and mbedtls_mpi_read_string(). * - * \param ctx The DHM context. + * \note In a TLS handshake, this is the how the server generates + * and exports its DHM key material. + * + * \param ctx The DHM context to use. This must be initialized + * and have the DHM parameters set. It may or may not + * already have imported the peer's public key. * \param x_size The private key size in Bytes. - * \param olen The number of characters written. - * \param output The destination buffer. - * \param f_rng The RNG function. - * \param p_rng The RNG context. + * \param olen The address at which to store the number of Bytes + * written on success. This must not be \c NULL. + * \param output The destination buffer. This must be a writable buffer of + * sufficient size to hold the reduced binary presentation of + * the modulus, the generator and the public key, each wrapped + * with a 2-byte length field. It is the responsibility of the + * caller to ensure that enough space is available. Refer to + * mbedtls_mpi_size() to computing the byte-size of an MPI. + * \param f_rng The RNG function. Must not be \c NULL. + * \param p_rng The RNG context to be passed to \p f_rng. This may be + * \c NULL if \p f_rng doesn't need a context parameter. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_DHM_XXX error code on failure. @@ -177,12 +192,14 @@ int mbedtls_dhm_make_params( mbedtls_dhm_context *ctx, int x_size, /** * \brief This function sets the prime modulus and generator. * - * \note This function can be used to set \p P, \p G + * \note This function can be used to set \c ctx->P, \c ctx->G * in preparation for mbedtls_dhm_make_params(). * - * \param ctx The DHM context. - * \param P The MPI holding the DHM prime modulus. - * \param G The MPI holding the DHM generator. + * \param ctx The DHM context to configure. This must be initialized. + * \param P The MPI holding the DHM prime modulus. This must be + * an initialized MPI. + * \param G The MPI holding the DHM generator. This must be an + * initialized MPI. * * \return \c 0 if successful. * \return An \c MBEDTLS_ERR_DHM_XXX error code on failure. @@ -192,11 +209,17 @@ int mbedtls_dhm_set_group( mbedtls_dhm_context *ctx, const mbedtls_mpi *G ); /** - * \brief This function imports the public value of the peer, G^Y. + * \brief This function imports the raw public value of the peer. + * + * \note In a TLS handshake, this is the how the server imports + * the Client's public DHM key. * - * \param ctx The DHM context. - * \param input The input buffer containing the G^Y value of the peer. - * \param ilen The size of the input buffer. + * \param ctx The DHM context to use. This must be initialized and have + * its DHM parameters set, e.g. via mbedtls_dhm_set_group(). + * It may or may not already have generated its own private key. + * \param input The input buffer containing the \c G^Y value of the peer. + * This must be a readable buffer of size \p ilen Bytes. + * \param ilen The size of the input buffer \p input in Bytes. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_DHM_XXX error code on failure. @@ -205,21 +228,25 @@ int mbedtls_dhm_read_public( mbedtls_dhm_context *ctx, const unsigned char *input, size_t ilen ); /** - * \brief This function creates its own private key, \c X, and - * exports \c G^X. + * \brief This function creates a DHM key pair and exports + * the raw public key in big-endian format. * * \note The destination buffer is always fully written * so as to contain a big-endian representation of G^X mod P. - * If it is larger than ctx->len, it is padded accordingly + * If it is larger than \c ctx->len, it is padded accordingly * with zero-bytes at the beginning. * - * \param ctx The DHM context. + * \param ctx The DHM context to use. This must be initialized and + * have the DHM parameters set. It may or may not already + * have imported the peer's public key. * \param x_size The private key size in Bytes. - * \param output The destination buffer. - * \param olen The length of the destination buffer. Must be at least - * equal to ctx->len (the size of \c P). - * \param f_rng The RNG function. - * \param p_rng The RNG context. + * \param output The destination buffer. This must be a writable buffer of + * size \p olen Bytes. + * \param olen The length of the destination buffer. This must be at least + * equal to `ctx->len` (the size of \c P). + * \param f_rng The RNG function. This must not be \c NULL. + * \param p_rng The RNG context to be passed to \p f_rng. This may be \c NULL + * if \p f_rng doesn't need a context argument. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_DHM_XXX error code on failure. @@ -230,22 +257,27 @@ int mbedtls_dhm_make_public( mbedtls_dhm_context *ctx, int x_size, void *p_rng ); /** - * \brief This function derives and exports the shared secret - * \c (G^Y)^X mod \c P. + * \brief This function derives and exports the shared secret + * \c (G^Y)^X mod \c P. * - * \note If \p f_rng is not NULL, it is used to blind the input as - * a countermeasure against timing attacks. Blinding is used - * only if our private key \c X is re-used, and not used - * otherwise. We recommend always passing a non-NULL - * \p f_rng argument. + * \note If \p f_rng is not \c NULL, it is used to blind the input as + * a countermeasure against timing attacks. Blinding is used + * only if our private key \c X is re-used, and not used + * otherwise. We recommend always passing a non-NULL + * \p f_rng argument. * - * \param ctx The DHM context. - * \param output The destination buffer. - * \param output_size The size of the destination buffer. Must be at least - * the size of ctx->len (the size of \c P). + * \param ctx The DHM context to use. This must be initialized + * and have its own private key generated and the peer's + * public key imported. + * \param output The buffer to write the generated shared key to. This + * must be a writable buffer of size \p output_size Bytes. + * \param output_size The size of the destination buffer. This must be at + * least the size of \c ctx->len (the size of \c P). * \param olen On exit, holds the actual number of Bytes written. - * \param f_rng The RNG function, for blinding purposes. - * \param p_rng The RNG context. + * \param f_rng The RNG function, for blinding purposes. This may + * b \c NULL if blinding isn't needed. + * \param p_rng The RNG context. This may be \c NULL if \p f_rng + * doesn't need a context argument. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_DHM_XXX error code on failure. @@ -256,9 +288,12 @@ int mbedtls_dhm_calc_secret( mbedtls_dhm_context *ctx, void *p_rng ); /** - * \brief This function frees and clears the components of a DHM context. + * \brief This function frees and clears the components + * of a DHM context. * - * \param ctx The DHM context to free and clear. + * \param ctx The DHM context to free and clear. This may be \c NULL, + * in which case this function is a no-op. If it is not \c NULL, + * it must point to an initialized DHM context. */ void mbedtls_dhm_free( mbedtls_dhm_context *ctx ); @@ -267,17 +302,19 @@ void mbedtls_dhm_free( mbedtls_dhm_context *ctx ); /** * \brief This function parses DHM parameters in PEM or DER format. * - * \param dhm The DHM context to initialize. - * \param dhmin The input buffer. - * \param dhminlen The size of the buffer, including the terminating null - * Byte for PEM data. + * \param dhm The DHM context to import the DHM parameters into. + * This must be initialized. + * \param dhmin The input buffer. This must be a readable buffer of + * length \p dhminlen Bytes. + * \param dhminlen The size of the input buffer \p dhmin, including the + * terminating \c NULL Byte for PEM data. * * \return \c 0 on success. - * \return An \c MBEDTLS_ERR_DHM_XXX or \c MBEDTLS_ERR_PEM_XXX error code - * error code on failure. + * \return An \c MBEDTLS_ERR_DHM_XXX or \c MBEDTLS_ERR_PEM_XXX error + * code on failure. */ int mbedtls_dhm_parse_dhm( mbedtls_dhm_context *dhm, const unsigned char *dhmin, - size_t dhminlen ); + size_t dhminlen ); #if defined(MBEDTLS_FS_IO) /** \ingroup x509_module */ @@ -285,11 +322,13 @@ int mbedtls_dhm_parse_dhm( mbedtls_dhm_context *dhm, const unsigned char *dhmin, * \brief This function loads and parses DHM parameters from a file. * * \param dhm The DHM context to load the parameters to. + * This must be initialized. * \param path The filename to read the DHM parameters from. + * This must not be \c NULL. * * \return \c 0 on success. - * \return An \c MBEDTLS_ERR_DHM_XXX or \c MBEDTLS_ERR_PEM_XXX error code - * error code on failure. + * \return An \c MBEDTLS_ERR_DHM_XXX or \c MBEDTLS_ERR_PEM_XXX + * error code on failure. */ int mbedtls_dhm_parse_dhmfile( mbedtls_dhm_context *dhm, const char *path ); #endif /* MBEDTLS_FS_IO */ @@ -350,15 +389,6 @@ int mbedtls_dhm_self_test( int verbose ); #if !defined(MBEDTLS_DEPRECATED_REMOVED) -#if defined(MBEDTLS_DEPRECATED_WARNING) -#define MBEDTLS_DEPRECATED __attribute__((deprecated)) -MBEDTLS_DEPRECATED typedef char const * mbedtls_deprecated_constant_t; -#define MBEDTLS_DEPRECATED_STRING_CONSTANT( VAL ) \ - ( (mbedtls_deprecated_constant_t) ( VAL ) ) -#else -#define MBEDTLS_DEPRECATED_STRING_CONSTANT( VAL ) VAL -#endif /* ! MBEDTLS_DEPRECATED_WARNING */ - /** * \warning The origin of the primes in RFC 5114 is not documented and * their use therefore constitutes a security risk! diff --git a/thirdparty/mbedtls/include/mbedtls/ecdh.h b/thirdparty/mbedtls/include/mbedtls/ecdh.h index 5fdf55a88a..05b2b03970 100644 --- a/thirdparty/mbedtls/include/mbedtls/ecdh.h +++ b/thirdparty/mbedtls/include/mbedtls/ecdh.h @@ -36,6 +36,18 @@ #include "ecp.h" +/* + * Use a backward compatible ECDH context. + * + * This flag is always enabled for now and future versions might add a + * configuration option that conditionally undefines this flag. + * The configuration option in question may have a different name. + * + * Features undefining this flag, must have a warning in their description in + * config.h stating that the feature breaks backward compatibility. + */ +#define MBEDTLS_ECDH_LEGACY_CONTEXT + #ifdef __cplusplus extern "C" { #endif @@ -49,11 +61,49 @@ typedef enum MBEDTLS_ECDH_THEIRS, /**< The key of the peer. */ } mbedtls_ecdh_side; +#if !defined(MBEDTLS_ECDH_LEGACY_CONTEXT) +/** + * Defines the ECDH implementation used. + * + * Later versions of the library may add new variants, therefore users should + * not make any assumptions about them. + */ +typedef enum +{ + MBEDTLS_ECDH_VARIANT_NONE = 0, /*!< Implementation not defined. */ + MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0,/*!< The default Mbed TLS implementation */ +} mbedtls_ecdh_variant; + +/** + * The context used by the default ECDH implementation. + * + * Later versions might change the structure of this context, therefore users + * should not make any assumptions about the structure of + * mbedtls_ecdh_context_mbed. + */ +typedef struct mbedtls_ecdh_context_mbed +{ + mbedtls_ecp_group grp; /*!< The elliptic curve used. */ + mbedtls_mpi d; /*!< The private key. */ + mbedtls_ecp_point Q; /*!< The public key. */ + mbedtls_ecp_point Qp; /*!< The value of the public key of the peer. */ + mbedtls_mpi z; /*!< The shared secret. */ +#if defined(MBEDTLS_ECP_RESTARTABLE) + mbedtls_ecp_restart_ctx rs; /*!< The restart context for EC computations. */ +#endif +} mbedtls_ecdh_context_mbed; +#endif + /** + * + * \warning Performing multiple operations concurrently on the same + * ECDSA context is not supported; objects of this type + * should not be shared between multiple threads. * \brief The ECDH context structure. */ -typedef struct +typedef struct mbedtls_ecdh_context { +#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT) mbedtls_ecp_group grp; /*!< The elliptic curve used. */ mbedtls_mpi d; /*!< The private key. */ mbedtls_ecp_point Q; /*!< The public key. */ @@ -63,6 +113,29 @@ typedef struct mbedtls_ecp_point Vi; /*!< The blinding value. */ mbedtls_ecp_point Vf; /*!< The unblinding value. */ mbedtls_mpi _d; /*!< The previous \p d. */ +#if defined(MBEDTLS_ECP_RESTARTABLE) + int restart_enabled; /*!< The flag for restartable mode. */ + mbedtls_ecp_restart_ctx rs; /*!< The restart context for EC computations. */ +#endif /* MBEDTLS_ECP_RESTARTABLE */ +#else + uint8_t point_format; /*!< The format of point export in TLS messages + as defined in RFC 4492. */ + mbedtls_ecp_group_id grp_id;/*!< The elliptic curve used. */ + mbedtls_ecdh_variant var; /*!< The ECDH implementation/structure used. */ + union + { + mbedtls_ecdh_context_mbed mbed_ecdh; + } ctx; /*!< Implementation-specific context. The + context in use is specified by the \c var + field. */ +#if defined(MBEDTLS_ECP_RESTARTABLE) + uint8_t restart_enabled; /*!< The flag for restartable mode. Functions of + an alternative implementation not supporting + restartable mode must return + MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED error + if this flag is set. */ +#endif /* MBEDTLS_ECP_RESTARTABLE */ +#endif /* MBEDTLS_ECDH_LEGACY_CONTEXT */ } mbedtls_ecdh_context; @@ -76,16 +149,20 @@ mbedtls_ecdh_context; * * \see ecp.h * - * \param grp The ECP group. + * \param grp The ECP group to use. This must be initialized and have + * domain parameters loaded, for example through + * mbedtls_ecp_load() or mbedtls_ecp_tls_read_group(). * \param d The destination MPI (private key). + * This must be initialized. * \param Q The destination point (public key). - * \param f_rng The RNG function. - * \param p_rng The RNG context. + * This must be initialized. + * \param f_rng The RNG function to use. This must not be \c NULL. + * \param p_rng The RNG context to be passed to \p f_rng. This may be + * \c NULL in case \p f_rng doesn't need a context argument. * * \return \c 0 on success. - * \return An \c MBEDTLS_ERR_ECP_XXX or + * \return Another \c MBEDTLS_ERR_ECP_XXX or * \c MBEDTLS_MPI_XXX error code on failure. - * */ int mbedtls_ecdh_gen_public( mbedtls_ecp_group *grp, mbedtls_mpi *d, mbedtls_ecp_point *Q, int (*f_rng)(void *, unsigned char *, size_t), @@ -104,15 +181,25 @@ int mbedtls_ecdh_gen_public( mbedtls_ecp_group *grp, mbedtls_mpi *d, mbedtls_ecp * countermeasures against side-channel attacks. * For more information, see mbedtls_ecp_mul(). * - * \param grp The ECP group. + * \param grp The ECP group to use. This must be initialized and have + * domain parameters loaded, for example through + * mbedtls_ecp_load() or mbedtls_ecp_tls_read_group(). * \param z The destination MPI (shared secret). + * This must be initialized. * \param Q The public key from another party. + * This must be initialized. * \param d Our secret exponent (private key). - * \param f_rng The RNG function. - * \param p_rng The RNG context. + * This must be initialized. + * \param f_rng The RNG function. This may be \c NULL if randomization + * of intermediate results during the ECP computations is + * not needed (discouraged). See the documentation of + * mbedtls_ecp_mul() for more. + * \param p_rng The RNG context to be passed to \p f_rng. This may be + * \c NULL if \p f_rng is \c NULL or doesn't need a + * context argument. * * \return \c 0 on success. - * \return An \c MBEDTLS_ERR_ECP_XXX or + * \return Another \c MBEDTLS_ERR_ECP_XXX or * \c MBEDTLS_MPI_XXX error code on failure. */ int mbedtls_ecdh_compute_shared( mbedtls_ecp_group *grp, mbedtls_mpi *z, @@ -123,39 +210,62 @@ int mbedtls_ecdh_compute_shared( mbedtls_ecp_group *grp, mbedtls_mpi *z, /** * \brief This function initializes an ECDH context. * - * \param ctx The ECDH context to initialize. + * \param ctx The ECDH context to initialize. This must not be \c NULL. */ void mbedtls_ecdh_init( mbedtls_ecdh_context *ctx ); /** + * \brief This function sets up the ECDH context with the information + * given. + * + * This function should be called after mbedtls_ecdh_init() but + * before mbedtls_ecdh_make_params(). There is no need to call + * this function before mbedtls_ecdh_read_params(). + * + * This is the first function used by a TLS server for ECDHE + * ciphersuites. + * + * \param ctx The ECDH context to set up. This must be initialized. + * \param grp_id The group id of the group to set up the context for. + * + * \return \c 0 on success. + */ +int mbedtls_ecdh_setup( mbedtls_ecdh_context *ctx, + mbedtls_ecp_group_id grp_id ); + +/** * \brief This function frees a context. * - * \param ctx The context to free. + * \param ctx The context to free. This may be \c NULL, in which + * case this function does nothing. If it is not \c NULL, + * it must point to an initialized ECDH context. */ void mbedtls_ecdh_free( mbedtls_ecdh_context *ctx ); /** - * \brief This function generates a public key and a TLS - * ServerKeyExchange payload. - * - * This is the first function used by a TLS server for ECDHE - * ciphersuites. + * \brief This function generates an EC key pair and exports its + * in the format used in a TLS ServerKeyExchange handshake + * message. * - * \note This function assumes that the ECP group (grp) of the - * \p ctx context has already been properly set, - * for example, using mbedtls_ecp_group_load(). + * This is the second function used by a TLS server for ECDHE + * ciphersuites. (It is called after mbedtls_ecdh_setup().) * * \see ecp.h * - * \param ctx The ECDH context. - * \param olen The number of characters written. - * \param buf The destination buffer. - * \param blen The length of the destination buffer. - * \param f_rng The RNG function. - * \param p_rng The RNG context. + * \param ctx The ECDH context to use. This must be initialized + * and bound to a group, for example via mbedtls_ecdh_setup(). + * \param olen The address at which to store the number of Bytes written. + * \param buf The destination buffer. This must be a writable buffer of + * length \p blen Bytes. + * \param blen The length of the destination buffer \p buf in Bytes. + * \param f_rng The RNG function to use. This must not be \c NULL. + * \param p_rng The RNG context to be passed to \p f_rng. This may be + * \c NULL in case \p f_rng doesn't need a context argument. * * \return \c 0 on success. - * \return An \c MBEDTLS_ERR_ECP_XXX error code on failure. + * \return #MBEDTLS_ERR_ECP_IN_PROGRESS if maximum number of + * operations was reached: see \c mbedtls_ecp_set_max_ops(). + * \return Another \c MBEDTLS_ERR_ECP_XXX error code on failure. */ int mbedtls_ecdh_make_params( mbedtls_ecdh_context *ctx, size_t *olen, unsigned char *buf, size_t blen, @@ -163,24 +273,32 @@ int mbedtls_ecdh_make_params( mbedtls_ecdh_context *ctx, size_t *olen, void *p_rng ); /** - * \brief This function parses and processes a TLS ServerKeyExhange - * payload. + * \brief This function parses the ECDHE parameters in a + * TLS ServerKeyExchange handshake message. * - * This is the first function used by a TLS client for ECDHE - * ciphersuites. + * \note In a TLS handshake, this is the how the client + * sets up its ECDHE context from the server's public + * ECDHE key material. * * \see ecp.h * - * \param ctx The ECDH context. - * \param buf The pointer to the start of the input buffer. - * \param end The address for one Byte past the end of the buffer. + * \param ctx The ECDHE context to use. This must be initialized. + * \param buf On input, \c *buf must be the start of the input buffer. + * On output, \c *buf is updated to point to the end of the + * data that has been read. On success, this is the first byte + * past the end of the ServerKeyExchange parameters. + * On error, this is the point at which an error has been + * detected, which is usually not useful except to debug + * failures. + * \param end The end of the input buffer. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_ECP_XXX error code on failure. * */ int mbedtls_ecdh_read_params( mbedtls_ecdh_context *ctx, - const unsigned char **buf, const unsigned char *end ); + const unsigned char **buf, + const unsigned char *end ); /** * \brief This function sets up an ECDH context from an EC key. @@ -191,36 +309,45 @@ int mbedtls_ecdh_read_params( mbedtls_ecdh_context *ctx, * * \see ecp.h * - * \param ctx The ECDH context to set up. - * \param key The EC key to use. - * \param side Defines the source of the key: 1: Our key, or - * 0: The key of the peer. + * \param ctx The ECDH context to set up. This must be initialized. + * \param key The EC key to use. This must be initialized. + * \param side Defines the source of the key. Possible values are: + * - #MBEDTLS_ECDH_OURS: The key is ours. + * - #MBEDTLS_ECDH_THEIRS: The key is that of the peer. * * \return \c 0 on success. - * \return An \c MBEDTLS_ERR_ECP_XXX error code on failure. + * \return Another \c MBEDTLS_ERR_ECP_XXX error code on failure. * */ -int mbedtls_ecdh_get_params( mbedtls_ecdh_context *ctx, const mbedtls_ecp_keypair *key, - mbedtls_ecdh_side side ); +int mbedtls_ecdh_get_params( mbedtls_ecdh_context *ctx, + const mbedtls_ecp_keypair *key, + mbedtls_ecdh_side side ); /** - * \brief This function generates a public key and a TLS - * ClientKeyExchange payload. + * \brief This function generates a public key and exports it + * as a TLS ClientKeyExchange payload. * * This is the second function used by a TLS client for ECDH(E) * ciphersuites. * * \see ecp.h * - * \param ctx The ECDH context. - * \param olen The number of Bytes written. - * \param buf The destination buffer. - * \param blen The size of the destination buffer. - * \param f_rng The RNG function. - * \param p_rng The RNG context. + * \param ctx The ECDH context to use. This must be initialized + * and bound to a group, the latter usually by + * mbedtls_ecdh_read_params(). + * \param olen The address at which to store the number of Bytes written. + * This must not be \c NULL. + * \param buf The destination buffer. This must be a writable buffer + * of length \p blen Bytes. + * \param blen The size of the destination buffer \p buf in Bytes. + * \param f_rng The RNG function to use. This must not be \c NULL. + * \param p_rng The RNG context to be passed to \p f_rng. This may be + * \c NULL in case \p f_rng doesn't need a context argument. * * \return \c 0 on success. - * \return An \c MBEDTLS_ERR_ECP_XXX error code on failure. + * \return #MBEDTLS_ERR_ECP_IN_PROGRESS if maximum number of + * operations was reached: see \c mbedtls_ecp_set_max_ops(). + * \return Another \c MBEDTLS_ERR_ECP_XXX error code on failure. */ int mbedtls_ecdh_make_public( mbedtls_ecdh_context *ctx, size_t *olen, unsigned char *buf, size_t blen, @@ -228,23 +355,26 @@ int mbedtls_ecdh_make_public( mbedtls_ecdh_context *ctx, size_t *olen, void *p_rng ); /** - * \brief This function parses and processes a TLS ClientKeyExchange - * payload. + * \brief This function parses and processes the ECDHE payload of a + * TLS ClientKeyExchange message. * - * This is the second function used by a TLS server for ECDH(E) - * ciphersuites. + * This is the third function used by a TLS server for ECDH(E) + * ciphersuites. (It is called after mbedtls_ecdh_setup() and + * mbedtls_ecdh_make_params().) * * \see ecp.h * - * \param ctx The ECDH context. - * \param buf The start of the input buffer. - * \param blen The length of the input buffer. + * \param ctx The ECDH context to use. This must be initialized + * and bound to a group, for example via mbedtls_ecdh_setup(). + * \param buf The pointer to the ClientKeyExchange payload. This must + * be a readable buffer of length \p blen Bytes. + * \param blen The length of the input buffer \p buf in Bytes. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_ECP_XXX error code on failure. */ int mbedtls_ecdh_read_public( mbedtls_ecdh_context *ctx, - const unsigned char *buf, size_t blen ); + const unsigned char *buf, size_t blen ); /** * \brief This function derives and exports the shared secret. @@ -257,22 +387,46 @@ int mbedtls_ecdh_read_public( mbedtls_ecdh_context *ctx, * For more information, see mbedtls_ecp_mul(). * * \see ecp.h - * - * \param ctx The ECDH context. - * \param olen The number of Bytes written. - * \param buf The destination buffer. - * \param blen The length of the destination buffer. - * \param f_rng The RNG function. - * \param p_rng The RNG context. + + * \param ctx The ECDH context to use. This must be initialized + * and have its own private key generated and the peer's + * public key imported. + * \param olen The address at which to store the total number of + * Bytes written on success. This must not be \c NULL. + * \param buf The buffer to write the generated shared key to. This + * must be a writable buffer of size \p blen Bytes. + * \param blen The length of the destination buffer \p buf in Bytes. + * \param f_rng The RNG function, for blinding purposes. This may + * b \c NULL if blinding isn't needed. + * \param p_rng The RNG context. This may be \c NULL if \p f_rng + * doesn't need a context argument. * * \return \c 0 on success. - * \return An \c MBEDTLS_ERR_ECP_XXX error code on failure. + * \return #MBEDTLS_ERR_ECP_IN_PROGRESS if maximum number of + * operations was reached: see \c mbedtls_ecp_set_max_ops(). + * \return Another \c MBEDTLS_ERR_ECP_XXX error code on failure. */ int mbedtls_ecdh_calc_secret( mbedtls_ecdh_context *ctx, size_t *olen, unsigned char *buf, size_t blen, int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ); +#if defined(MBEDTLS_ECP_RESTARTABLE) +/** + * \brief This function enables restartable EC computations for this + * context. (Default: disabled.) + * + * \see \c mbedtls_ecp_set_max_ops() + * + * \note It is not possible to safely disable restartable + * computations once enabled, except by free-ing the context, + * which cancels possible in-progress operations. + * + * \param ctx The ECDH context to use. This must be initialized. + */ +void mbedtls_ecdh_enable_restart( mbedtls_ecdh_context *ctx ); +#endif /* MBEDTLS_ECP_RESTARTABLE */ + #ifdef __cplusplus } #endif diff --git a/thirdparty/mbedtls/include/mbedtls/ecdsa.h b/thirdparty/mbedtls/include/mbedtls/ecdsa.h index ce1a03d791..40fdab3729 100644 --- a/thirdparty/mbedtls/include/mbedtls/ecdsa.h +++ b/thirdparty/mbedtls/include/mbedtls/ecdsa.h @@ -55,20 +55,71 @@ /** The maximal size of an ECDSA signature in Bytes. */ #define MBEDTLS_ECDSA_MAX_LEN ( 3 + 2 * ( 3 + MBEDTLS_ECP_MAX_BYTES ) ) +#ifdef __cplusplus +extern "C" { +#endif + /** * \brief The ECDSA context structure. + * + * \warning Performing multiple operations concurrently on the same + * ECDSA context is not supported; objects of this type + * should not be shared between multiple threads. */ typedef mbedtls_ecp_keypair mbedtls_ecdsa_context; -#ifdef __cplusplus -extern "C" { +#if defined(MBEDTLS_ECP_RESTARTABLE) + +/** + * \brief Internal restart context for ecdsa_verify() + * + * \note Opaque struct, defined in ecdsa.c + */ +typedef struct mbedtls_ecdsa_restart_ver mbedtls_ecdsa_restart_ver_ctx; + +/** + * \brief Internal restart context for ecdsa_sign() + * + * \note Opaque struct, defined in ecdsa.c + */ +typedef struct mbedtls_ecdsa_restart_sig mbedtls_ecdsa_restart_sig_ctx; + +#if defined(MBEDTLS_ECDSA_DETERMINISTIC) +/** + * \brief Internal restart context for ecdsa_sign_det() + * + * \note Opaque struct, defined in ecdsa.c + */ +typedef struct mbedtls_ecdsa_restart_det mbedtls_ecdsa_restart_det_ctx; +#endif + +/** + * \brief General context for resuming ECDSA operations + */ +typedef struct +{ + mbedtls_ecp_restart_ctx ecp; /*!< base context for ECP restart and + shared administrative info */ + mbedtls_ecdsa_restart_ver_ctx *ver; /*!< ecdsa_verify() sub-context */ + mbedtls_ecdsa_restart_sig_ctx *sig; /*!< ecdsa_sign() sub-context */ +#if defined(MBEDTLS_ECDSA_DETERMINISTIC) + mbedtls_ecdsa_restart_det_ctx *det; /*!< ecdsa_sign_det() sub-context */ #endif +} mbedtls_ecdsa_restart_ctx; + +#else /* MBEDTLS_ECP_RESTARTABLE */ + +/* Now we can declare functions that take a pointer to that */ +typedef void mbedtls_ecdsa_restart_ctx; + +#endif /* MBEDTLS_ECP_RESTARTABLE */ /** * \brief This function computes the ECDSA signature of a * previously-hashed message. * - * \note The deterministic version is usually preferred. + * \note The deterministic version implemented in + * mbedtls_ecdsa_sign_det() is usually preferred. * * \note If the bitlength of the message hash is larger than the * bitlength of the group order, then the hash is truncated @@ -78,14 +129,22 @@ extern "C" { * * \see ecp.h * - * \param grp The ECP group. - * \param r The first output integer. - * \param s The second output integer. - * \param d The private signing key. - * \param buf The message hash. - * \param blen The length of \p buf. - * \param f_rng The RNG function. - * \param p_rng The RNG context. + * \param grp The context for the elliptic curve to use. + * This must be initialized and have group parameters + * set, for example through mbedtls_ecp_group_load(). + * \param r The MPI context in which to store the first part + * the signature. This must be initialized. + * \param s The MPI context in which to store the second part + * the signature. This must be initialized. + * \param d The private signing key. This must be initialized. + * \param buf The content to be signed. This is usually the hash of + * the original data to be signed. This must be a readable + * buffer of length \p blen Bytes. It may be \c NULL if + * \p blen is zero. + * \param blen The length of \p buf in Bytes. + * \param f_rng The RNG function. This must not be \c NULL. + * \param p_rng The RNG context to be passed to \p f_rng. This may be + * \c NULL if \p f_rng doesn't need a context parameter. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_ECP_XXX @@ -112,21 +171,29 @@ int mbedtls_ecdsa_sign( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s, * * \see ecp.h * - * \param grp The ECP group. - * \param r The first output integer. - * \param s The second output integer. - * \param d The private signing key. - * \param buf The message hash. - * \param blen The length of \p buf. - * \param md_alg The MD algorithm used to hash the message. + * \param grp The context for the elliptic curve to use. + * This must be initialized and have group parameters + * set, for example through mbedtls_ecp_group_load(). + * \param r The MPI context in which to store the first part + * the signature. This must be initialized. + * \param s The MPI context in which to store the second part + * the signature. This must be initialized. + * \param d The private signing key. This must be initialized + * and setup, for example through mbedtls_ecp_gen_privkey(). + * \param buf The hashed content to be signed. This must be a readable + * buffer of length \p blen Bytes. It may be \c NULL if + * \p blen is zero. + * \param blen The length of \p buf in Bytes. + * \param md_alg The hash algorithm used to hash the original data. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_ECP_XXX or \c MBEDTLS_MPI_XXX * error code on failure. */ -int mbedtls_ecdsa_sign_det( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s, - const mbedtls_mpi *d, const unsigned char *buf, size_t blen, - mbedtls_md_type_t md_alg ); +int mbedtls_ecdsa_sign_det( mbedtls_ecp_group *grp, mbedtls_mpi *r, + mbedtls_mpi *s, const mbedtls_mpi *d, + const unsigned char *buf, size_t blen, + mbedtls_md_type_t md_alg ); #endif /* MBEDTLS_ECDSA_DETERMINISTIC */ /** @@ -141,12 +208,19 @@ int mbedtls_ecdsa_sign_det( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi * * \see ecp.h * - * \param grp The ECP group. - * \param buf The message hash. - * \param blen The length of \p buf. - * \param Q The public key to use for verification. + * \param grp The ECP group to use. + * This must be initialized and have group parameters + * set, for example through mbedtls_ecp_group_load(). + * \param buf The hashed content that was signed. This must be a readable + * buffer of length \p blen Bytes. It may be \c NULL if + * \p blen is zero. + * \param blen The length of \p buf in Bytes. + * \param Q The public key to use for verification. This must be + * initialized and setup. * \param r The first integer of the signature. + * This must be initialized. * \param s The second integer of the signature. + * This must be initialized. * * \return \c 0 on success. * \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if the signature @@ -155,8 +229,9 @@ int mbedtls_ecdsa_sign_det( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi * error code on failure for any other reason. */ int mbedtls_ecdsa_verify( mbedtls_ecp_group *grp, - const unsigned char *buf, size_t blen, - const mbedtls_ecp_point *Q, const mbedtls_mpi *r, const mbedtls_mpi *s); + const unsigned char *buf, size_t blen, + const mbedtls_ecp_point *Q, const mbedtls_mpi *r, + const mbedtls_mpi *s); /** * \brief This function computes the ECDSA signature and writes it @@ -173,11 +248,6 @@ int mbedtls_ecdsa_verify( mbedtls_ecp_group *grp, * of the Digital Signature Algorithm (DSA) and Elliptic * Curve Digital Signature Algorithm (ECDSA)</em>. * - * \note The \p sig buffer must be at least twice as large as the - * size of the curve used, plus 9. For example, 73 Bytes if - * a 256-bit curve is used. A buffer length of - * #MBEDTLS_ECDSA_MAX_LEN is always safe. - * * \note If the bitlength of the message hash is larger than the * bitlength of the group order, then the hash is truncated as * defined in <em>Standards for Efficient Cryptography Group @@ -186,25 +256,84 @@ int mbedtls_ecdsa_verify( mbedtls_ecp_group *grp, * * \see ecp.h * - * \param ctx The ECDSA context. + * \param ctx The ECDSA context to use. This must be initialized + * and have a group and private key bound to it, for example + * via mbedtls_ecdsa_genkey() or mbedtls_ecdsa_from_keypair(). * \param md_alg The message digest that was used to hash the message. - * \param hash The message hash. - * \param hlen The length of the hash. - * \param sig The buffer that holds the signature. - * \param slen The length of the signature written. - * \param f_rng The RNG function. - * \param p_rng The RNG context. + * \param hash The message hash to be signed. This must be a readable + * buffer of length \p blen Bytes. + * \param hlen The length of the hash \p hash in Bytes. + * \param sig The buffer to which to write the signature. This must be a + * writable buffer of length at least twice as large as the + * size of the curve used, plus 9. For example, 73 Bytes if + * a 256-bit curve is used. A buffer length of + * #MBEDTLS_ECDSA_MAX_LEN is always safe. + * \param slen The address at which to store the actual length of + * the signature written. Must not be \c NULL. + * \param f_rng The RNG function. This must not be \c NULL if + * #MBEDTLS_ECDSA_DETERMINISTIC is unset. Otherwise, + * it is unused and may be set to \c NULL. + * \param p_rng The RNG context to be passed to \p f_rng. This may be + * \c NULL if \p f_rng is \c NULL or doesn't use a context. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_ECP_XXX, \c MBEDTLS_ERR_MPI_XXX or * \c MBEDTLS_ERR_ASN1_XXX error code on failure. */ -int mbedtls_ecdsa_write_signature( mbedtls_ecdsa_context *ctx, mbedtls_md_type_t md_alg, +int mbedtls_ecdsa_write_signature( mbedtls_ecdsa_context *ctx, + mbedtls_md_type_t md_alg, const unsigned char *hash, size_t hlen, unsigned char *sig, size_t *slen, int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ); +/** + * \brief This function computes the ECDSA signature and writes it + * to a buffer, in a restartable way. + * + * \see \c mbedtls_ecdsa_write_signature() + * + * \note This function is like \c mbedtls_ecdsa_write_signature() + * but it can return early and restart according to the limit + * set with \c mbedtls_ecp_set_max_ops() to reduce blocking. + * + * \param ctx The ECDSA context to use. This must be initialized + * and have a group and private key bound to it, for example + * via mbedtls_ecdsa_genkey() or mbedtls_ecdsa_from_keypair(). + * \param md_alg The message digest that was used to hash the message. + * \param hash The message hash to be signed. This must be a readable + * buffer of length \p blen Bytes. + * \param hlen The length of the hash \p hash in Bytes. + * \param sig The buffer to which to write the signature. This must be a + * writable buffer of length at least twice as large as the + * size of the curve used, plus 9. For example, 73 Bytes if + * a 256-bit curve is used. A buffer length of + * #MBEDTLS_ECDSA_MAX_LEN is always safe. + * \param slen The address at which to store the actual length of + * the signature written. Must not be \c NULL. + * \param f_rng The RNG function. This must not be \c NULL if + * #MBEDTLS_ECDSA_DETERMINISTIC is unset. Otherwise, + * it is unused and may be set to \c NULL. + * \param p_rng The RNG context to be passed to \p f_rng. This may be + * \c NULL if \p f_rng is \c NULL or doesn't use a context. + * \param rs_ctx The restart context to use. This may be \c NULL to disable + * restarting. If it is not \c NULL, it must point to an + * initialized restart context. + * + * \return \c 0 on success. + * \return #MBEDTLS_ERR_ECP_IN_PROGRESS if maximum number of + * operations was reached: see \c mbedtls_ecp_set_max_ops(). + * \return Another \c MBEDTLS_ERR_ECP_XXX, \c MBEDTLS_ERR_MPI_XXX or + * \c MBEDTLS_ERR_ASN1_XXX error code on failure. + */ +int mbedtls_ecdsa_write_signature_restartable( mbedtls_ecdsa_context *ctx, + mbedtls_md_type_t md_alg, + const unsigned char *hash, size_t hlen, + unsigned char *sig, size_t *slen, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng, + mbedtls_ecdsa_restart_ctx *rs_ctx ); + #if defined(MBEDTLS_ECDSA_DETERMINISTIC) #if ! defined(MBEDTLS_DEPRECATED_REMOVED) #if defined(MBEDTLS_DEPRECATED_WARNING) @@ -225,11 +354,6 @@ int mbedtls_ecdsa_write_signature( mbedtls_ecdsa_context *ctx, mbedtls_md_type_t * \warning It is not thread-safe to use the same context in * multiple threads. * - * \note The \p sig buffer must be at least twice as large as the - * size of the curve used, plus 9. For example, 73 Bytes if a - * 256-bit curve is used. A buffer length of - * #MBEDTLS_ECDSA_MAX_LEN is always safe. - * * \note If the bitlength of the message hash is larger than the * bitlength of the group order, then the hash is truncated as * defined in <em>Standards for Efficient Cryptography Group @@ -241,12 +365,20 @@ int mbedtls_ecdsa_write_signature( mbedtls_ecdsa_context *ctx, mbedtls_md_type_t * \deprecated Superseded by mbedtls_ecdsa_write_signature() in * Mbed TLS version 2.0 and later. * - * \param ctx The ECDSA context. - * \param hash The message hash. - * \param hlen The length of the hash. - * \param sig The buffer that holds the signature. - * \param slen The length of the signature written. - * \param md_alg The MD algorithm used to hash the message. + * \param ctx The ECDSA context to use. This must be initialized + * and have a group and private key bound to it, for example + * via mbedtls_ecdsa_genkey() or mbedtls_ecdsa_from_keypair(). + * \param hash The message hash to be signed. This must be a readable + * buffer of length \p blen Bytes. + * \param hlen The length of the hash \p hash in Bytes. + * \param sig The buffer to which to write the signature. This must be a + * writable buffer of length at least twice as large as the + * size of the curve used, plus 9. For example, 73 Bytes if + * a 256-bit curve is used. A buffer length of + * #MBEDTLS_ECDSA_MAX_LEN is always safe. + * \param slen The address at which to store the actual length of + * the signature written. Must not be \c NULL. + * \param md_alg The message digest that was used to hash the message. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_ECP_XXX, \c MBEDTLS_ERR_MPI_XXX or @@ -271,11 +403,14 @@ int mbedtls_ecdsa_write_signature_det( mbedtls_ecdsa_context *ctx, * * \see ecp.h * - * \param ctx The ECDSA context. - * \param hash The message hash. - * \param hlen The size of the hash. - * \param sig The signature to read and verify. - * \param slen The size of \p sig. + * \param ctx The ECDSA context to use. This must be initialized + * and have a group and public key bound to it. + * \param hash The message hash that was signed. This must be a readable + * buffer of length \p size Bytes. + * \param hlen The size of the hash \p hash. + * \param sig The signature to read and verify. This must be a readable + * buffer of length \p slen Bytes. + * \param slen The size of \p sig in Bytes. * * \return \c 0 on success. * \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if signature is invalid. @@ -289,15 +424,53 @@ int mbedtls_ecdsa_read_signature( mbedtls_ecdsa_context *ctx, const unsigned char *sig, size_t slen ); /** + * \brief This function reads and verifies an ECDSA signature, + * in a restartable way. + * + * \see \c mbedtls_ecdsa_read_signature() + * + * \note This function is like \c mbedtls_ecdsa_read_signature() + * but it can return early and restart according to the limit + * set with \c mbedtls_ecp_set_max_ops() to reduce blocking. + * + * \param ctx The ECDSA context to use. This must be initialized + * and have a group and public key bound to it. + * \param hash The message hash that was signed. This must be a readable + * buffer of length \p size Bytes. + * \param hlen The size of the hash \p hash. + * \param sig The signature to read and verify. This must be a readable + * buffer of length \p slen Bytes. + * \param slen The size of \p sig in Bytes. + * \param rs_ctx The restart context to use. This may be \c NULL to disable + * restarting. If it is not \c NULL, it must point to an + * initialized restart context. + * + * \return \c 0 on success. + * \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if signature is invalid. + * \return #MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH if there is a valid + * signature in \p sig, but its length is less than \p siglen. + * \return #MBEDTLS_ERR_ECP_IN_PROGRESS if maximum number of + * operations was reached: see \c mbedtls_ecp_set_max_ops(). + * \return Another \c MBEDTLS_ERR_ECP_XXX or \c MBEDTLS_ERR_MPI_XXX + * error code on failure for any other reason. + */ +int mbedtls_ecdsa_read_signature_restartable( mbedtls_ecdsa_context *ctx, + const unsigned char *hash, size_t hlen, + const unsigned char *sig, size_t slen, + mbedtls_ecdsa_restart_ctx *rs_ctx ); + +/** * \brief This function generates an ECDSA keypair on the given curve. * * \see ecp.h * * \param ctx The ECDSA context to store the keypair in. + * This must be initialized. * \param gid The elliptic curve to use. One of the various * \c MBEDTLS_ECP_DP_XXX macros depending on configuration. - * \param f_rng The RNG function. - * \param p_rng The RNG context. + * \param f_rng The RNG function to use. This must not be \c NULL. + * \param p_rng The RNG context to be passed to \p f_rng. This may be + * \c NULL if \p f_rng doesn't need a context argument. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_ECP_XXX code on failure. @@ -306,32 +479,59 @@ int mbedtls_ecdsa_genkey( mbedtls_ecdsa_context *ctx, mbedtls_ecp_group_id gid, int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ); /** - * \brief This function sets an ECDSA context from an EC key pair. + * \brief This function sets up an ECDSA context from an EC key pair. * * \see ecp.h * - * \param ctx The ECDSA context to set. - * \param key The EC key to use. + * \param ctx The ECDSA context to setup. This must be initialized. + * \param key The EC key to use. This must be initialized and hold + * a private-public key pair or a public key. In the former + * case, the ECDSA context may be used for signature creation + * and verification after this call. In the latter case, it + * may be used for signature verification. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_ECP_XXX code on failure. */ -int mbedtls_ecdsa_from_keypair( mbedtls_ecdsa_context *ctx, const mbedtls_ecp_keypair *key ); +int mbedtls_ecdsa_from_keypair( mbedtls_ecdsa_context *ctx, + const mbedtls_ecp_keypair *key ); /** * \brief This function initializes an ECDSA context. * * \param ctx The ECDSA context to initialize. + * This must not be \c NULL. */ void mbedtls_ecdsa_init( mbedtls_ecdsa_context *ctx ); /** * \brief This function frees an ECDSA context. * - * \param ctx The ECDSA context to free. + * \param ctx The ECDSA context to free. This may be \c NULL, + * in which case this function does nothing. If it + * is not \c NULL, it must be initialized. */ void mbedtls_ecdsa_free( mbedtls_ecdsa_context *ctx ); +#if defined(MBEDTLS_ECP_RESTARTABLE) +/** + * \brief Initialize a restart context. + * + * \param ctx The restart context to initialize. + * This must not be \c NULL. + */ +void mbedtls_ecdsa_restart_init( mbedtls_ecdsa_restart_ctx *ctx ); + +/** + * \brief Free the components of a restart context. + * + * \param ctx The restart context to free. This may be \c NULL, + * in which case this function does nothing. If it + * is not \c NULL, it must be initialized. + */ +void mbedtls_ecdsa_restart_free( mbedtls_ecdsa_restart_ctx *ctx ); +#endif /* MBEDTLS_ECP_RESTARTABLE */ + #ifdef __cplusplus } #endif diff --git a/thirdparty/mbedtls/include/mbedtls/ecjpake.h b/thirdparty/mbedtls/include/mbedtls/ecjpake.h index cc2b316f5e..b967af8385 100644 --- a/thirdparty/mbedtls/include/mbedtls/ecjpake.h +++ b/thirdparty/mbedtls/include/mbedtls/ecjpake.h @@ -68,7 +68,7 @@ typedef enum { * convetion from the Thread v1.0 spec. Correspondance is indicated in the * description as a pair C: client name, S: server name */ -typedef struct +typedef struct mbedtls_ecjpake_context { const mbedtls_md_info_t *md_info; /**< Hash to use */ mbedtls_ecp_group grp; /**< Elliptic curve */ @@ -92,28 +92,33 @@ typedef struct #endif /* MBEDTLS_ECJPAKE_ALT */ /** - * \brief Initialize a context - * (just makes it ready for setup() or free()). + * \brief Initialize an ECJPAKE context. * - * \param ctx context to initialize + * \param ctx The ECJPAKE context to initialize. + * This must not be \c NULL. */ void mbedtls_ecjpake_init( mbedtls_ecjpake_context *ctx ); /** - * \brief Set up a context for use + * \brief Set up an ECJPAKE context for use. * * \note Currently the only values for hash/curve allowed by the - * standard are MBEDTLS_MD_SHA256/MBEDTLS_ECP_DP_SECP256R1. + * standard are #MBEDTLS_MD_SHA256/#MBEDTLS_ECP_DP_SECP256R1. * - * \param ctx context to set up - * \param role Our role: client or server - * \param hash hash function to use (MBEDTLS_MD_XXX) - * \param curve elliptic curve identifier (MBEDTLS_ECP_DP_XXX) - * \param secret pre-shared secret (passphrase) - * \param len length of the shared secret + * \param ctx The ECJPAKE context to set up. This must be initialized. + * \param role The role of the caller. This must be either + * #MBEDTLS_ECJPAKE_CLIENT or #MBEDTLS_ECJPAKE_SERVER. + * \param hash The identifier of the hash function to use, + * for example #MBEDTLS_MD_SHA256. + * \param curve The identifier of the elliptic curve to use, + * for example #MBEDTLS_ECP_DP_SECP256R1. + * \param secret The pre-shared secret (passphrase). This must be + * a readable buffer of length \p len Bytes. It need + * only be valid for the duration of this call. + * \param len The length of the pre-shared secret \p secret. * - * \return 0 if successfull, - * a negative error code otherwise + * \return \c 0 if successful. + * \return A negative error code on failure. */ int mbedtls_ecjpake_setup( mbedtls_ecjpake_context *ctx, mbedtls_ecjpake_role role, @@ -123,29 +128,34 @@ int mbedtls_ecjpake_setup( mbedtls_ecjpake_context *ctx, size_t len ); /** - * \brief Check if a context is ready for use + * \brief Check if an ECJPAKE context is ready for use. * - * \param ctx Context to check + * \param ctx The ECJPAKE context to check. This must be + * initialized. * - * \return 0 if the context is ready for use, - * MBEDTLS_ERR_ECP_BAD_INPUT_DATA otherwise + * \return \c 0 if the context is ready for use. + * \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA otherwise. */ int mbedtls_ecjpake_check( const mbedtls_ecjpake_context *ctx ); /** * \brief Generate and write the first round message * (TLS: contents of the Client/ServerHello extension, - * excluding extension type and length bytes) + * excluding extension type and length bytes). * - * \param ctx Context to use - * \param buf Buffer to write the contents to - * \param len Buffer size - * \param olen Will be updated with the number of bytes written - * \param f_rng RNG function - * \param p_rng RNG parameter + * \param ctx The ECJPAKE context to use. This must be + * initialized and set up. + * \param buf The buffer to write the contents to. This must be a + * writable buffer of length \p len Bytes. + * \param len The length of \p buf in Bytes. + * \param olen The address at which to store the total number + * of Bytes written to \p buf. This must not be \c NULL. + * \param f_rng The RNG function to use. This must not be \c NULL. + * \param p_rng The RNG parameter to be passed to \p f_rng. This + * may be \c NULL if \p f_rng doesn't use a context. * - * \return 0 if successfull, - * a negative error code otherwise + * \return \c 0 if successful. + * \return A negative error code on failure. */ int mbedtls_ecjpake_write_round_one( mbedtls_ecjpake_context *ctx, unsigned char *buf, size_t len, size_t *olen, @@ -155,14 +165,16 @@ int mbedtls_ecjpake_write_round_one( mbedtls_ecjpake_context *ctx, /** * \brief Read and process the first round message * (TLS: contents of the Client/ServerHello extension, - * excluding extension type and length bytes) + * excluding extension type and length bytes). * - * \param ctx Context to use - * \param buf Pointer to extension contents - * \param len Extension length + * \param ctx The ECJPAKE context to use. This must be initialized + * and set up. + * \param buf The buffer holding the first round message. This must + * be a readable buffer of length \p len Bytes. + * \param len The length in Bytes of \p buf. * - * \return 0 if successfull, - * a negative error code otherwise + * \return \c 0 if successful. + * \return A negative error code on failure. */ int mbedtls_ecjpake_read_round_one( mbedtls_ecjpake_context *ctx, const unsigned char *buf, @@ -170,17 +182,21 @@ int mbedtls_ecjpake_read_round_one( mbedtls_ecjpake_context *ctx, /** * \brief Generate and write the second round message - * (TLS: contents of the Client/ServerKeyExchange) + * (TLS: contents of the Client/ServerKeyExchange). * - * \param ctx Context to use - * \param buf Buffer to write the contents to - * \param len Buffer size - * \param olen Will be updated with the number of bytes written - * \param f_rng RNG function - * \param p_rng RNG parameter + * \param ctx The ECJPAKE context to use. This must be initialized, + * set up, and already have performed round one. + * \param buf The buffer to write the round two contents to. + * This must be a writable buffer of length \p len Bytes. + * \param len The size of \p buf in Bytes. + * \param olen The address at which to store the total number of Bytes + * written to \p buf. This must not be \c NULL. + * \param f_rng The RNG function to use. This must not be \c NULL. + * \param p_rng The RNG parameter to be passed to \p f_rng. This + * may be \c NULL if \p f_rng doesn't use a context. * - * \return 0 if successfull, - * a negative error code otherwise + * \return \c 0 if successful. + * \return A negative error code on failure. */ int mbedtls_ecjpake_write_round_two( mbedtls_ecjpake_context *ctx, unsigned char *buf, size_t len, size_t *olen, @@ -189,14 +205,16 @@ int mbedtls_ecjpake_write_round_two( mbedtls_ecjpake_context *ctx, /** * \brief Read and process the second round message - * (TLS: contents of the Client/ServerKeyExchange) + * (TLS: contents of the Client/ServerKeyExchange). * - * \param ctx Context to use - * \param buf Pointer to the message - * \param len Message length + * \param ctx The ECJPAKE context to use. This must be initialized + * and set up and already have performed round one. + * \param buf The buffer holding the second round message. This must + * be a readable buffer of length \p len Bytes. + * \param len The length in Bytes of \p buf. * - * \return 0 if successfull, - * a negative error code otherwise + * \return \c 0 if successful. + * \return A negative error code on failure. */ int mbedtls_ecjpake_read_round_two( mbedtls_ecjpake_context *ctx, const unsigned char *buf, @@ -204,17 +222,21 @@ int mbedtls_ecjpake_read_round_two( mbedtls_ecjpake_context *ctx, /** * \brief Derive the shared secret - * (TLS: Pre-Master Secret) + * (TLS: Pre-Master Secret). * - * \param ctx Context to use - * \param buf Buffer to write the contents to - * \param len Buffer size - * \param olen Will be updated with the number of bytes written - * \param f_rng RNG function - * \param p_rng RNG parameter + * \param ctx The ECJPAKE context to use. This must be initialized, + * set up and have performed both round one and two. + * \param buf The buffer to write the derived secret to. This must + * be a writable buffer of length \p len Bytes. + * \param len The length of \p buf in Bytes. + * \param olen The address at which to store the total number of Bytes + * written to \p buf. This must not be \c NULL. + * \param f_rng The RNG function to use. This must not be \c NULL. + * \param p_rng The RNG parameter to be passed to \p f_rng. This + * may be \c NULL if \p f_rng doesn't use a context. * - * \return 0 if successfull, - * a negative error code otherwise + * \return \c 0 if successful. + * \return A negative error code on failure. */ int mbedtls_ecjpake_derive_secret( mbedtls_ecjpake_context *ctx, unsigned char *buf, size_t len, size_t *olen, @@ -222,14 +244,15 @@ int mbedtls_ecjpake_derive_secret( mbedtls_ecjpake_context *ctx, void *p_rng ); /** - * \brief Free a context's content + * \brief This clears an ECJPAKE context and frees any + * embedded data structure. * - * \param ctx context to free + * \param ctx The ECJPAKE context to free. This may be \c NULL, + * in which case this function does nothing. If it is not + * \c NULL, it must point to an initialized ECJPAKE context. */ void mbedtls_ecjpake_free( mbedtls_ecjpake_context *ctx ); - - #if defined(MBEDTLS_SELF_TEST) /** diff --git a/thirdparty/mbedtls/include/mbedtls/ecp.h b/thirdparty/mbedtls/include/mbedtls/ecp.h index 3a407986dd..de3a343cb6 100644 --- a/thirdparty/mbedtls/include/mbedtls/ecp.h +++ b/thirdparty/mbedtls/include/mbedtls/ecp.h @@ -49,8 +49,12 @@ #define MBEDTLS_ERR_ECP_RANDOM_FAILED -0x4D00 /**< Generation of random value, such as ephemeral key, failed. */ #define MBEDTLS_ERR_ECP_INVALID_KEY -0x4C80 /**< Invalid private or public key. */ #define MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH -0x4C00 /**< The buffer contains a valid signature followed by more data. */ + +/* MBEDTLS_ERR_ECP_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_ECP_HW_ACCEL_FAILED -0x4B80 /**< The ECP hardware accelerator failed. */ +#define MBEDTLS_ERR_ECP_IN_PROGRESS -0x4B00 /**< Operation in progress, call again with the same parameters to continue. */ + #ifdef __cplusplus extern "C" { #endif @@ -92,7 +96,7 @@ typedef enum /** * Curve information, for use by other modules. */ -typedef struct +typedef struct mbedtls_ecp_curve_info { mbedtls_ecp_group_id grp_id; /*!< An internal identifier. */ uint16_t tls_id; /*!< The TLS NamedCurve identifier. */ @@ -111,7 +115,7 @@ typedef struct * Otherwise, \p X and \p Y are its standard (affine) * coordinates. */ -typedef struct +typedef struct mbedtls_ecp_point { mbedtls_mpi X; /*!< The X coordinate of the ECP point. */ mbedtls_mpi Y; /*!< The Y coordinate of the ECP point. */ @@ -155,8 +159,12 @@ mbedtls_ecp_point; * additions or subtractions. Therefore, it is only an approximative modular * reduction. It must return 0 on success and non-zero on failure. * + * \note Alternative implementations must keep the group IDs distinct. If + * two group structures have the same ID, then they must be + * identical. + * */ -typedef struct +typedef struct mbedtls_ecp_group { mbedtls_ecp_group_id id; /*!< An internal group identifier. */ mbedtls_mpi P; /*!< The prime modulus of the base field. */ @@ -181,6 +189,70 @@ typedef struct } mbedtls_ecp_group; +#if defined(MBEDTLS_ECP_RESTARTABLE) + +/** + * \brief Internal restart context for multiplication + * + * \note Opaque struct + */ +typedef struct mbedtls_ecp_restart_mul mbedtls_ecp_restart_mul_ctx; + +/** + * \brief Internal restart context for ecp_muladd() + * + * \note Opaque struct + */ +typedef struct mbedtls_ecp_restart_muladd mbedtls_ecp_restart_muladd_ctx; + +/** + * \brief General context for resuming ECC operations + */ +typedef struct +{ + unsigned ops_done; /*!< current ops count */ + unsigned depth; /*!< call depth (0 = top-level) */ + mbedtls_ecp_restart_mul_ctx *rsm; /*!< ecp_mul_comb() sub-context */ + mbedtls_ecp_restart_muladd_ctx *ma; /*!< ecp_muladd() sub-context */ +} mbedtls_ecp_restart_ctx; + +/* + * Operation counts for restartable functions + */ +#define MBEDTLS_ECP_OPS_CHK 3 /*!< basic ops count for ecp_check_pubkey() */ +#define MBEDTLS_ECP_OPS_DBL 8 /*!< basic ops count for ecp_double_jac() */ +#define MBEDTLS_ECP_OPS_ADD 11 /*!< basic ops count for see ecp_add_mixed() */ +#define MBEDTLS_ECP_OPS_INV 120 /*!< empirical equivalent for mpi_mod_inv() */ + +/** + * \brief Internal; for restartable functions in other modules. + * Check and update basic ops budget. + * + * \param grp Group structure + * \param rs_ctx Restart context + * \param ops Number of basic ops to do + * + * \return \c 0 if doing \p ops basic ops is still allowed, + * \return #MBEDTLS_ERR_ECP_IN_PROGRESS otherwise. + */ +int mbedtls_ecp_check_budget( const mbedtls_ecp_group *grp, + mbedtls_ecp_restart_ctx *rs_ctx, + unsigned ops ); + +/* Utility macro for checking and updating ops budget */ +#define MBEDTLS_ECP_BUDGET( ops ) \ + MBEDTLS_MPI_CHK( mbedtls_ecp_check_budget( grp, rs_ctx, \ + (unsigned) (ops) ) ); + +#else /* MBEDTLS_ECP_RESTARTABLE */ + +#define MBEDTLS_ECP_BUDGET( ops ) /* no-op; for compatibility */ + +/* We want to declare restartable versions of existing functions anyway */ +typedef void mbedtls_ecp_restart_ctx; + +#endif /* MBEDTLS_ECP_RESTARTABLE */ + /** * \name SECTION: Module settings * @@ -251,7 +323,7 @@ mbedtls_ecp_group; * \note Members are deliberately in the same order as in the * ::mbedtls_ecdsa_context structure. */ -typedef struct +typedef struct mbedtls_ecp_keypair { mbedtls_ecp_group grp; /*!< Elliptic curve and base point */ mbedtls_mpi d; /*!< our secret value */ @@ -270,6 +342,75 @@ mbedtls_ecp_keypair; */ #define MBEDTLS_ECP_TLS_NAMED_CURVE 3 /**< The named_curve of ECCurveType. */ +#if defined(MBEDTLS_ECP_RESTARTABLE) +/** + * \brief Set the maximum number of basic operations done in a row. + * + * If more operations are needed to complete a computation, + * #MBEDTLS_ERR_ECP_IN_PROGRESS will be returned by the + * function performing the computation. It is then the + * caller's responsibility to either call again with the same + * parameters until it returns 0 or an error code; or to free + * the restart context if the operation is to be aborted. + * + * It is strictly required that all input parameters and the + * restart context be the same on successive calls for the + * same operation, but output parameters need not be the + * same; they must not be used until the function finally + * returns 0. + * + * This only applies to functions whose documentation + * mentions they may return #MBEDTLS_ERR_ECP_IN_PROGRESS (or + * #MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS for functions in the + * SSL module). For functions that accept a "restart context" + * argument, passing NULL disables restart and makes the + * function equivalent to the function with the same name + * with \c _restartable removed. For functions in the ECDH + * module, restart is disabled unless the function accepts + * an "ECDH context" argument and + * mbedtls_ecdh_enable_restart() was previously called on + * that context. For function in the SSL module, restart is + * only enabled for specific sides and key exchanges + * (currently only for clients and ECDHE-ECDSA). + * + * \param max_ops Maximum number of basic operations done in a row. + * Default: 0 (unlimited). + * Lower (non-zero) values mean ECC functions will block for + * a lesser maximum amount of time. + * + * \note A "basic operation" is defined as a rough equivalent of a + * multiplication in GF(p) for the NIST P-256 curve. + * As an indication, with default settings, a scalar + * multiplication (full run of \c mbedtls_ecp_mul()) is: + * - about 3300 basic operations for P-256 + * - about 9400 basic operations for P-384 + * + * \note Very low values are not always respected: sometimes + * functions need to block for a minimum number of + * operations, and will do so even if max_ops is set to a + * lower value. That minimum depends on the curve size, and + * can be made lower by decreasing the value of + * \c MBEDTLS_ECP_WINDOW_SIZE. As an indication, here is the + * lowest effective value for various curves and values of + * that parameter (w for short): + * w=6 w=5 w=4 w=3 w=2 + * P-256 208 208 160 136 124 + * P-384 682 416 320 272 248 + * P-521 1364 832 640 544 496 + * + * \note This setting is currently ignored by Curve25519. + */ +void mbedtls_ecp_set_max_ops( unsigned max_ops ); + +/** + * \brief Check if restart is enabled (max_ops != 0) + * + * \return \c 0 if \c max_ops == 0 (restart disabled) + * \return \c 1 otherwise (restart enabled) + */ +int mbedtls_ecp_restart_is_enabled( void ); +#endif /* MBEDTLS_ECP_RESTARTABLE */ + /** * \brief This function retrieves the information defined in * mbedtls_ecp_curve_info() for all supported curves in order @@ -356,25 +497,51 @@ void mbedtls_ecp_point_free( mbedtls_ecp_point *pt ); /** * \brief This function frees the components of an ECP group. - * \param grp The group to free. + * + * \param grp The group to free. This may be \c NULL, in which + * case this function returns immediately. If it is not + * \c NULL, it must point to an initialized ECP group. */ void mbedtls_ecp_group_free( mbedtls_ecp_group *grp ); /** * \brief This function frees the components of a key pair. - * \param key The key pair to free. + * + * \param key The key pair to free. This may be \c NULL, in which + * case this function returns immediately. If it is not + * \c NULL, it must point to an initialized ECP key pair. */ void mbedtls_ecp_keypair_free( mbedtls_ecp_keypair *key ); +#if defined(MBEDTLS_ECP_RESTARTABLE) +/** + * \brief Initialize a restart context. + * + * \param ctx The restart context to initialize. This must + * not be \c NULL. + */ +void mbedtls_ecp_restart_init( mbedtls_ecp_restart_ctx *ctx ); + +/** + * \brief Free the components of a restart context. + * + * \param ctx The restart context to free. This may be \c NULL, in which + * case this function returns immediately. If it is not + * \c NULL, it must point to an initialized restart context. + */ +void mbedtls_ecp_restart_free( mbedtls_ecp_restart_ctx *ctx ); +#endif /* MBEDTLS_ECP_RESTARTABLE */ + /** * \brief This function copies the contents of point \p Q into * point \p P. * - * \param P The destination point. - * \param Q The source point. + * \param P The destination point. This must be initialized. + * \param Q The source point. This must be initialized. * * \return \c 0 on success. * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED on memory-allocation failure. + * \return Another negative error code for other kinds of failure. */ int mbedtls_ecp_copy( mbedtls_ecp_point *P, const mbedtls_ecp_point *Q ); @@ -382,31 +549,35 @@ int mbedtls_ecp_copy( mbedtls_ecp_point *P, const mbedtls_ecp_point *Q ); * \brief This function copies the contents of group \p src into * group \p dst. * - * \param dst The destination group. - * \param src The source group. + * \param dst The destination group. This must be initialized. + * \param src The source group. This must be initialized. * * \return \c 0 on success. * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED on memory-allocation failure. + * \return Another negative error code on other kinds of failure. */ -int mbedtls_ecp_group_copy( mbedtls_ecp_group *dst, const mbedtls_ecp_group *src ); +int mbedtls_ecp_group_copy( mbedtls_ecp_group *dst, + const mbedtls_ecp_group *src ); /** - * \brief This function sets a point to zero. + * \brief This function sets a point to the point at infinity. * - * \param pt The point to set. + * \param pt The point to set. This must be initialized. * * \return \c 0 on success. * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED on memory-allocation failure. + * \return Another negative error code on other kinds of failure. */ int mbedtls_ecp_set_zero( mbedtls_ecp_point *pt ); /** - * \brief This function checks if a point is zero. + * \brief This function checks if a point is the point at infinity. * - * \param pt The point to test. + * \param pt The point to test. This must be initialized. * * \return \c 1 if the point is zero. * \return \c 0 if the point is non-zero. + * \return A negative error code on failure. */ int mbedtls_ecp_is_zero( mbedtls_ecp_point *pt ); @@ -416,8 +587,8 @@ int mbedtls_ecp_is_zero( mbedtls_ecp_point *pt ); * \note This assumes that the points are normalized. Otherwise, * they may compare as "not equal" even if they are. * - * \param P The first point to compare. - * \param Q The second point to compare. + * \param P The first point to compare. This must be initialized. + * \param Q The second point to compare. This must be initialized. * * \return \c 0 if the points are equal. * \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if the points are not equal. @@ -429,7 +600,7 @@ int mbedtls_ecp_point_cmp( const mbedtls_ecp_point *P, * \brief This function imports a non-zero point from two ASCII * strings. * - * \param P The destination point. + * \param P The destination point. This must be initialized. * \param radix The numeric base of the input. * \param x The first affine coordinate, as a null-terminated string. * \param y The second affine coordinate, as a null-terminated string. @@ -444,15 +615,21 @@ int mbedtls_ecp_point_read_string( mbedtls_ecp_point *P, int radix, * \brief This function exports a point into unsigned binary data. * * \param grp The group to which the point should belong. - * \param P The point to export. - * \param format The point format. Should be an \c MBEDTLS_ECP_PF_XXX macro. - * \param olen The length of the output. - * \param buf The output buffer. - * \param buflen The length of the output buffer. + * This must be initialized and have group parameters + * set, for example through mbedtls_ecp_group_load(). + * \param P The point to export. This must be initialized. + * \param format The point format. This must be either + * #MBEDTLS_ECP_PF_COMPRESSED or #MBEDTLS_ECP_PF_UNCOMPRESSED. + * \param olen The address at which to store the length of + * the output in Bytes. This must not be \c NULL. + * \param buf The output buffer. This must be a writable buffer + * of length \p buflen Bytes. + * \param buflen The length of the output buffer \p buf in Bytes. * * \return \c 0 on success. - * \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA - * or #MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL on failure. + * \return #MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL if the output buffer + * is too small to hold the point. + * \return Another negative error code on other kinds of failure. */ int mbedtls_ecp_point_write_binary( const mbedtls_ecp_group *grp, const mbedtls_ecp_point *P, int format, size_t *olen, @@ -466,108 +643,158 @@ int mbedtls_ecp_point_write_binary( const mbedtls_ecp_group *grp, const mbedtls_ * for that. * * \param grp The group to which the point should belong. - * \param P The point to import. - * \param buf The input buffer. - * \param ilen The length of the input. + * This must be initialized and have group parameters + * set, for example through mbedtls_ecp_group_load(). + * \param P The destination context to import the point to. + * This must be initialized. + * \param buf The input buffer. This must be a readable buffer + * of length \p ilen Bytes. + * \param ilen The length of the input buffer \p buf in Bytes. * * \return \c 0 on success. - * \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if input is invalid. + * \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if the input is invalid. * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED on memory-allocation failure. * \return #MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE if the point format * is not implemented. - * */ -int mbedtls_ecp_point_read_binary( const mbedtls_ecp_group *grp, mbedtls_ecp_point *P, - const unsigned char *buf, size_t ilen ); +int mbedtls_ecp_point_read_binary( const mbedtls_ecp_group *grp, + mbedtls_ecp_point *P, + const unsigned char *buf, size_t ilen ); /** * \brief This function imports a point from a TLS ECPoint record. * - * \note On function return, \p buf is updated to point to immediately + * \note On function return, \p *buf is updated to point immediately * after the ECPoint record. * - * \param grp The ECP group used. + * \param grp The ECP group to use. + * This must be initialized and have group parameters + * set, for example through mbedtls_ecp_group_load(). * \param pt The destination point. * \param buf The address of the pointer to the start of the input buffer. * \param len The length of the buffer. * * \return \c 0 on success. - * \return An \c MBEDTLS_ERR_MPI_XXX error code on initialization failure. + * \return An \c MBEDTLS_ERR_MPI_XXX error code on initialization + * failure. * \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if input is invalid. */ -int mbedtls_ecp_tls_read_point( const mbedtls_ecp_group *grp, mbedtls_ecp_point *pt, - const unsigned char **buf, size_t len ); +int mbedtls_ecp_tls_read_point( const mbedtls_ecp_group *grp, + mbedtls_ecp_point *pt, + const unsigned char **buf, size_t len ); /** - * \brief This function exports a point as a TLS ECPoint record. - * - * \param grp The ECP group used. - * \param pt The point format to export to. The point format is an - * \c MBEDTLS_ECP_PF_XXX constant. - * \param format The export format. - * \param olen The length of the data written. - * \param buf The buffer to write to. - * \param blen The length of the buffer. + * \brief This function exports a point as a TLS ECPoint record + * defined in RFC 4492, Section 5.4. + * + * \param grp The ECP group to use. + * This must be initialized and have group parameters + * set, for example through mbedtls_ecp_group_load(). + * \param pt The point to be exported. This must be initialized. + * \param format The point format to use. This must be either + * #MBEDTLS_ECP_PF_COMPRESSED or #MBEDTLS_ECP_PF_UNCOMPRESSED. + * \param olen The address at which to store the length in Bytes + * of the data written. + * \param buf The target buffer. This must be a writable buffer of + * length \p blen Bytes. + * \param blen The length of the target buffer \p buf in Bytes. * * \return \c 0 on success. - * \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA or - * #MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL on failure. + * \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if the input is invalid. + * \return #MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL if the target buffer + * is too small to hold the exported point. + * \return Another negative error code on other kinds of failure. */ -int mbedtls_ecp_tls_write_point( const mbedtls_ecp_group *grp, const mbedtls_ecp_point *pt, - int format, size_t *olen, - unsigned char *buf, size_t blen ); +int mbedtls_ecp_tls_write_point( const mbedtls_ecp_group *grp, + const mbedtls_ecp_point *pt, + int format, size_t *olen, + unsigned char *buf, size_t blen ); /** - * \brief This function sets a group using standardized domain parameters. + * \brief This function sets up an ECP group context + * from a standardized set of domain parameters. * * \note The index should be a value of the NamedCurve enum, * as defined in <em>RFC-4492: Elliptic Curve Cryptography * (ECC) Cipher Suites for Transport Layer Security (TLS)</em>, * usually in the form of an \c MBEDTLS_ECP_DP_XXX macro. * - * \param grp The destination group. + * \param grp The group context to setup. This must be initialized. * \param id The identifier of the domain parameter set to load. * - * \return \c 0 on success, - * \return An \c MBEDTLS_ERR_MPI_XXX error code on initialization failure. - * \return #MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE for unkownn groups. - + * \return \c 0 on success. + * \return #MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE if \p id doesn't + * correspond to a known group. + * \return Another negative error code on other kinds of failure. */ int mbedtls_ecp_group_load( mbedtls_ecp_group *grp, mbedtls_ecp_group_id id ); /** - * \brief This function sets a group from a TLS ECParameters record. + * \brief This function sets up an ECP group context from a TLS + * ECParameters record as defined in RFC 4492, Section 5.4. * - * \note \p buf is updated to point right after the ECParameters record - * on exit. + * \note The read pointer \p buf is updated to point right after + * the ECParameters record on exit. * - * \param grp The destination group. + * \param grp The group context to setup. This must be initialized. * \param buf The address of the pointer to the start of the input buffer. - * \param len The length of the buffer. + * \param len The length of the input buffer \c *buf in Bytes. * * \return \c 0 on success. - * \return An \c MBEDTLS_ERR_MPI_XXX error code on initialization failure. * \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if input is invalid. + * \return #MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE if the group is not + * recognized. + * \return Another negative error code on other kinds of failure. */ -int mbedtls_ecp_tls_read_group( mbedtls_ecp_group *grp, const unsigned char **buf, size_t len ); +int mbedtls_ecp_tls_read_group( mbedtls_ecp_group *grp, + const unsigned char **buf, size_t len ); /** - * \brief This function writes the TLS ECParameters record for a group. + * \brief This function extracts an elliptic curve group ID from a + * TLS ECParameters record as defined in RFC 4492, Section 5.4. + * + * \note The read pointer \p buf is updated to point right after + * the ECParameters record on exit. + * + * \param grp The address at which to store the group id. + * This must not be \c NULL. + * \param buf The address of the pointer to the start of the input buffer. + * \param len The length of the input buffer \c *buf in Bytes. * - * \param grp The ECP group used. - * \param olen The number of Bytes written. - * \param buf The buffer to write to. - * \param blen The length of the buffer. + * \return \c 0 on success. + * \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if input is invalid. + * \return #MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE if the group is not + * recognized. + * \return Another negative error code on other kinds of failure. + */ +int mbedtls_ecp_tls_read_group_id( mbedtls_ecp_group_id *grp, + const unsigned char **buf, + size_t len ); +/** + * \brief This function exports an elliptic curve as a TLS + * ECParameters record as defined in RFC 4492, Section 5.4. + * + * \param grp The ECP group to be exported. + * This must be initialized and have group parameters + * set, for example through mbedtls_ecp_group_load(). + * \param olen The address at which to store the number of Bytes written. + * This must not be \c NULL. + * \param buf The buffer to write to. This must be a writable buffer + * of length \p blen Bytes. + * \param blen The length of the output buffer \p buf in Bytes. * * \return \c 0 on success. - * \return #MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL on failure. + * \return #MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL if the output + * buffer is too small to hold the exported group. + * \return Another negative error code on other kinds of failure. */ -int mbedtls_ecp_tls_write_group( const mbedtls_ecp_group *grp, size_t *olen, - unsigned char *buf, size_t blen ); +int mbedtls_ecp_tls_write_group( const mbedtls_ecp_group *grp, + size_t *olen, + unsigned char *buf, size_t blen ); /** - * \brief This function performs multiplication of a point by - * an integer: \p R = \p m * \p P. + * \brief This function performs a scalar multiplication of a point + * by an integer: \p R = \p m * \p P. * * It is not thread-safe to use same group in multiple threads. * @@ -581,23 +808,63 @@ int mbedtls_ecp_tls_write_group( const mbedtls_ecp_group *grp, size_t *olen, * targeting these results. We recommend always providing * a non-NULL \p f_rng. The overhead is negligible. * - * \param grp The ECP group. - * \param R The destination point. - * \param m The integer by which to multiply. - * \param P The point to multiply. - * \param f_rng The RNG function. - * \param p_rng The RNG context. + * \param grp The ECP group to use. + * This must be initialized and have group parameters + * set, for example through mbedtls_ecp_group_load(). + * \param R The point in which to store the result of the calculation. + * This must be initialized. + * \param m The integer by which to multiply. This must be initialized. + * \param P The point to multiply. This must be initialized. + * \param f_rng The RNG function. This may be \c NULL if randomization + * of intermediate results isn't desired (discouraged). + * \param p_rng The RNG context to be passed to \p p_rng. * * \return \c 0 on success. * \return #MBEDTLS_ERR_ECP_INVALID_KEY if \p m is not a valid private * key, or \p P is not a valid public key. * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED on memory-allocation failure. + * \return Another negative error code on other kinds of failure. */ int mbedtls_ecp_mul( mbedtls_ecp_group *grp, mbedtls_ecp_point *R, const mbedtls_mpi *m, const mbedtls_ecp_point *P, int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ); /** + * \brief This function performs multiplication of a point by + * an integer: \p R = \p m * \p P in a restartable way. + * + * \see mbedtls_ecp_mul() + * + * \note This function does the same as \c mbedtls_ecp_mul(), but + * it can return early and restart according to the limit set + * with \c mbedtls_ecp_set_max_ops() to reduce blocking. + * + * \param grp The ECP group to use. + * This must be initialized and have group parameters + * set, for example through mbedtls_ecp_group_load(). + * \param R The point in which to store the result of the calculation. + * This must be initialized. + * \param m The integer by which to multiply. This must be initialized. + * \param P The point to multiply. This must be initialized. + * \param f_rng The RNG function. This may be \c NULL if randomization + * of intermediate results isn't desired (discouraged). + * \param p_rng The RNG context to be passed to \p p_rng. + * \param rs_ctx The restart context (NULL disables restart). + * + * \return \c 0 on success. + * \return #MBEDTLS_ERR_ECP_INVALID_KEY if \p m is not a valid private + * key, or \p P is not a valid public key. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED on memory-allocation failure. + * \return #MBEDTLS_ERR_ECP_IN_PROGRESS if maximum number of + * operations was reached: see \c mbedtls_ecp_set_max_ops(). + * \return Another negative error code on other kinds of failure. + */ +int mbedtls_ecp_mul_restartable( mbedtls_ecp_group *grp, mbedtls_ecp_point *R, + const mbedtls_mpi *m, const mbedtls_ecp_point *P, + int (*f_rng)(void *, unsigned char *, size_t), void *p_rng, + mbedtls_ecp_restart_ctx *rs_ctx ); + +/** * \brief This function performs multiplication and addition of two * points by integers: \p R = \p m * \p P + \p n * \p Q * @@ -606,24 +873,71 @@ int mbedtls_ecp_mul( mbedtls_ecp_group *grp, mbedtls_ecp_point *R, * \note In contrast to mbedtls_ecp_mul(), this function does not * guarantee a constant execution flow and timing. * - * \param grp The ECP group. - * \param R The destination point. + * \param grp The ECP group to use. + * This must be initialized and have group parameters + * set, for example through mbedtls_ecp_group_load(). + * \param R The point in which to store the result of the calculation. + * This must be initialized. * \param m The integer by which to multiply \p P. - * \param P The point to multiply by \p m. + * This must be initialized. + * \param P The point to multiply by \p m. This must be initialized. * \param n The integer by which to multiply \p Q. + * This must be initialized. * \param Q The point to be multiplied by \p n. + * This must be initialized. * * \return \c 0 on success. * \return #MBEDTLS_ERR_ECP_INVALID_KEY if \p m or \p n are not * valid private keys, or \p P or \p Q are not valid public * keys. * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED on memory-allocation failure. + * \return Another negative error code on other kinds of failure. */ int mbedtls_ecp_muladd( mbedtls_ecp_group *grp, mbedtls_ecp_point *R, const mbedtls_mpi *m, const mbedtls_ecp_point *P, const mbedtls_mpi *n, const mbedtls_ecp_point *Q ); /** + * \brief This function performs multiplication and addition of two + * points by integers: \p R = \p m * \p P + \p n * \p Q in a + * restartable way. + * + * \see \c mbedtls_ecp_muladd() + * + * \note This function works the same as \c mbedtls_ecp_muladd(), + * but it can return early and restart according to the limit + * set with \c mbedtls_ecp_set_max_ops() to reduce blocking. + * + * \param grp The ECP group to use. + * This must be initialized and have group parameters + * set, for example through mbedtls_ecp_group_load(). + * \param R The point in which to store the result of the calculation. + * This must be initialized. + * \param m The integer by which to multiply \p P. + * This must be initialized. + * \param P The point to multiply by \p m. This must be initialized. + * \param n The integer by which to multiply \p Q. + * This must be initialized. + * \param Q The point to be multiplied by \p n. + * This must be initialized. + * \param rs_ctx The restart context (NULL disables restart). + * + * \return \c 0 on success. + * \return #MBEDTLS_ERR_ECP_INVALID_KEY if \p m or \p n are not + * valid private keys, or \p P or \p Q are not valid public + * keys. + * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED on memory-allocation failure. + * \return #MBEDTLS_ERR_ECP_IN_PROGRESS if maximum number of + * operations was reached: see \c mbedtls_ecp_set_max_ops(). + * \return Another negative error code on other kinds of failure. + */ +int mbedtls_ecp_muladd_restartable( + mbedtls_ecp_group *grp, mbedtls_ecp_point *R, + const mbedtls_mpi *m, const mbedtls_ecp_point *P, + const mbedtls_mpi *n, const mbedtls_ecp_point *Q, + mbedtls_ecp_restart_ctx *rs_ctx ); + +/** * \brief This function checks that a point is a valid public key * on this curve. * @@ -640,30 +954,60 @@ int mbedtls_ecp_muladd( mbedtls_ecp_group *grp, mbedtls_ecp_point *R, * structures, such as ::mbedtls_ecdh_context or * ::mbedtls_ecdsa_context. * - * \param grp The curve the point should lie on. - * \param pt The point to check. + * \param grp The ECP group the point should belong to. + * This must be initialized and have group parameters + * set, for example through mbedtls_ecp_group_load(). + * \param pt The point to check. This must be initialized. * * \return \c 0 if the point is a valid public key. - * \return #MBEDTLS_ERR_ECP_INVALID_KEY on failure. + * \return #MBEDTLS_ERR_ECP_INVALID_KEY if the point is not + * a valid public key for the given curve. + * \return Another negative error code on other kinds of failure. */ -int mbedtls_ecp_check_pubkey( const mbedtls_ecp_group *grp, const mbedtls_ecp_point *pt ); +int mbedtls_ecp_check_pubkey( const mbedtls_ecp_group *grp, + const mbedtls_ecp_point *pt ); /** - * \brief This function checks that an \p mbedtls_mpi is a valid private - * key for this curve. + * \brief This function checks that an \p mbedtls_mpi is a + * valid private key for this curve. * * \note This function uses bare components rather than an * ::mbedtls_ecp_keypair structure to ease use with other * structures, such as ::mbedtls_ecdh_context or * ::mbedtls_ecdsa_context. * - * \param grp The group used. - * \param d The integer to check. + * \param grp The ECP group the private key should belong to. + * This must be initialized and have group parameters + * set, for example through mbedtls_ecp_group_load(). + * \param d The integer to check. This must be initialized. * * \return \c 0 if the point is a valid private key. - * \return #MBEDTLS_ERR_ECP_INVALID_KEY on failure. + * \return #MBEDTLS_ERR_ECP_INVALID_KEY if the point is not a valid + * private key for the given curve. + * \return Another negative error code on other kinds of failure. + */ +int mbedtls_ecp_check_privkey( const mbedtls_ecp_group *grp, + const mbedtls_mpi *d ); + +/** + * \brief This function generates a private key. + * + * \param grp The ECP group to generate a private key for. + * This must be initialized and have group parameters + * set, for example through mbedtls_ecp_group_load(). + * \param d The destination MPI (secret part). This must be initialized. + * \param f_rng The RNG function. This must not be \c NULL. + * \param p_rng The RNG parameter to be passed to \p f_rng. This may be + * \c NULL if \p f_rng doesn't need a context argument. + * + * \return \c 0 on success. + * \return An \c MBEDTLS_ERR_ECP_XXX or \c MBEDTLS_MPI_XXX error code + * on failure. */ -int mbedtls_ecp_check_privkey( const mbedtls_ecp_group *grp, const mbedtls_mpi *d ); +int mbedtls_ecp_gen_privkey( const mbedtls_ecp_group *grp, + mbedtls_mpi *d, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng ); /** * \brief This function generates a keypair with a configurable base @@ -674,22 +1018,29 @@ int mbedtls_ecp_check_privkey( const mbedtls_ecp_group *grp, const mbedtls_mpi * * structures, such as ::mbedtls_ecdh_context or * ::mbedtls_ecdsa_context. * - * \param grp The ECP group. - * \param G The chosen base point. + * \param grp The ECP group to generate a key pair for. + * This must be initialized and have group parameters + * set, for example through mbedtls_ecp_group_load(). + * \param G The base point to use. This must be initialized + * and belong to \p grp. It replaces the default base + * point \c grp->G used by mbedtls_ecp_gen_keypair(). * \param d The destination MPI (secret part). + * This must be initialized. * \param Q The destination point (public part). - * \param f_rng The RNG function. - * \param p_rng The RNG context. + * This must be initialized. + * \param f_rng The RNG function. This must not be \c NULL. + * \param p_rng The RNG context to be passed to \p f_rng. This may + * be \c NULL if \p f_rng doesn't need a context argument. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_ECP_XXX or \c MBEDTLS_MPI_XXX error code * on failure. */ int mbedtls_ecp_gen_keypair_base( mbedtls_ecp_group *grp, - const mbedtls_ecp_point *G, - mbedtls_mpi *d, mbedtls_ecp_point *Q, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ); + const mbedtls_ecp_point *G, + mbedtls_mpi *d, mbedtls_ecp_point *Q, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng ); /** * \brief This function generates an ECP keypair. @@ -699,34 +1050,42 @@ int mbedtls_ecp_gen_keypair_base( mbedtls_ecp_group *grp, * structures, such as ::mbedtls_ecdh_context or * ::mbedtls_ecdsa_context. * - * \param grp The ECP group. + * \param grp The ECP group to generate a key pair for. + * This must be initialized and have group parameters + * set, for example through mbedtls_ecp_group_load(). * \param d The destination MPI (secret part). + * This must be initialized. * \param Q The destination point (public part). - * \param f_rng The RNG function. - * \param p_rng The RNG context. + * This must be initialized. + * \param f_rng The RNG function. This must not be \c NULL. + * \param p_rng The RNG context to be passed to \p f_rng. This may + * be \c NULL if \p f_rng doesn't need a context argument. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_ECP_XXX or \c MBEDTLS_MPI_XXX error code * on failure. */ -int mbedtls_ecp_gen_keypair( mbedtls_ecp_group *grp, mbedtls_mpi *d, mbedtls_ecp_point *Q, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ); +int mbedtls_ecp_gen_keypair( mbedtls_ecp_group *grp, mbedtls_mpi *d, + mbedtls_ecp_point *Q, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng ); /** * \brief This function generates an ECP key. * * \param grp_id The ECP group identifier. - * \param key The destination key. - * \param f_rng The RNG function. - * \param p_rng The RNG context. + * \param key The destination key. This must be initialized. + * \param f_rng The RNG function to use. This must not be \c NULL. + * \param p_rng The RNG context to be passed to \p f_rng. This may + * be \c NULL if \p f_rng doesn't need a context argument. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_ECP_XXX or \c MBEDTLS_MPI_XXX error code * on failure. */ int mbedtls_ecp_gen_key( mbedtls_ecp_group_id grp_id, mbedtls_ecp_keypair *key, - int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ); + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng ); /** * \brief This function checks that the keypair objects @@ -734,16 +1093,19 @@ int mbedtls_ecp_gen_key( mbedtls_ecp_group_id grp_id, mbedtls_ecp_keypair *key, * same public point, and that the private key in * \p prv is consistent with the public key. * - * \param pub The keypair structure holding the public key. - * If it contains a private key, that part is ignored. + * \param pub The keypair structure holding the public key. This + * must be initialized. If it contains a private key, that + * part is ignored. * \param prv The keypair structure holding the full keypair. + * This must be initialized. * * \return \c 0 on success, meaning that the keys are valid and match. * \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if the keys are invalid or do not match. * \return An \c MBEDTLS_ERR_ECP_XXX or an \c MBEDTLS_ERR_MPI_XXX * error code on calculation failure. */ -int mbedtls_ecp_check_pub_priv( const mbedtls_ecp_keypair *pub, const mbedtls_ecp_keypair *prv ); +int mbedtls_ecp_check_pub_priv( const mbedtls_ecp_keypair *pub, + const mbedtls_ecp_keypair *prv ); #if defined(MBEDTLS_SELF_TEST) diff --git a/thirdparty/mbedtls/include/mbedtls/entropy.h b/thirdparty/mbedtls/include/mbedtls/entropy.h index a5cb05a584..ca06dc3c58 100644 --- a/thirdparty/mbedtls/include/mbedtls/entropy.h +++ b/thirdparty/mbedtls/include/mbedtls/entropy.h @@ -107,7 +107,7 @@ typedef int (*mbedtls_entropy_f_source_ptr)(void *data, unsigned char *output, s /** * \brief Entropy source state */ -typedef struct +typedef struct mbedtls_entropy_source_state { mbedtls_entropy_f_source_ptr f_source; /**< The entropy source callback */ void * p_source; /**< The callback data pointer */ @@ -120,7 +120,7 @@ mbedtls_entropy_source_state; /** * \brief Entropy context structure */ -typedef struct +typedef struct mbedtls_entropy_context { int accumulator_started; #if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR) diff --git a/thirdparty/mbedtls/include/mbedtls/error.h b/thirdparty/mbedtls/include/mbedtls/error.h index 6b82d4fbbe..647a11a566 100644 --- a/thirdparty/mbedtls/include/mbedtls/error.h +++ b/thirdparty/mbedtls/include/mbedtls/error.h @@ -74,12 +74,13 @@ * MD4 1 0x002D-0x002D * MD5 1 0x002F-0x002F * RIPEMD160 1 0x0031-0x0031 - * SHA1 1 0x0035-0x0035 - * SHA256 1 0x0037-0x0037 - * SHA512 1 0x0039-0x0039 + * SHA1 1 0x0035-0x0035 0x0073-0x0073 + * SHA256 1 0x0037-0x0037 0x0074-0x0074 + * SHA512 1 0x0039-0x0039 0x0075-0x0075 * CHACHA20 3 0x0051-0x0055 * POLY1305 3 0x0057-0x005B * CHACHAPOLY 2 0x0054-0x0056 + * PLATFORM 1 0x0070-0x0072 * * High-level module nr (3 bits - 0x0...-0x7...) * Name ID Nr of Errors @@ -90,12 +91,12 @@ * DHM 3 11 * PK 3 15 (Started from top) * RSA 4 11 - * ECP 4 9 (Started from top) + * ECP 4 10 (Started from top) * MD 5 5 * HKDF 5 1 (Started from top) * CIPHER 6 8 - * SSL 6 22 (Started from top) - * SSL 7 31 + * SSL 6 23 (Started from top) + * SSL 7 32 * * Module dependent error code (5 bits 0x.00.-0x.F8.) */ diff --git a/thirdparty/mbedtls/include/mbedtls/gcm.h b/thirdparty/mbedtls/include/mbedtls/gcm.h index 87535ab957..fccabb0d97 100644 --- a/thirdparty/mbedtls/include/mbedtls/gcm.h +++ b/thirdparty/mbedtls/include/mbedtls/gcm.h @@ -41,7 +41,10 @@ #define MBEDTLS_GCM_DECRYPT 0 #define MBEDTLS_ERR_GCM_AUTH_FAILED -0x0012 /**< Authenticated decryption failed. */ + +/* MBEDTLS_ERR_GCM_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_GCM_HW_ACCEL_FAILED -0x0013 /**< GCM hardware accelerator failed. */ + #define MBEDTLS_ERR_GCM_BAD_INPUT -0x0014 /**< Bad input parameters to function. */ #ifdef __cplusplus @@ -53,7 +56,8 @@ extern "C" { /** * \brief The GCM context structure. */ -typedef struct { +typedef struct mbedtls_gcm_context +{ mbedtls_cipher_context_t cipher_ctx; /*!< The cipher context used. */ uint64_t HL[16]; /*!< Precalculated HTable low. */ uint64_t HH[16]; /*!< Precalculated HTable high. */ @@ -81,7 +85,7 @@ mbedtls_gcm_context; * cipher, nor set the key. For this purpose, use * mbedtls_gcm_setkey(). * - * \param ctx The GCM context to initialize. + * \param ctx The GCM context to initialize. This must not be \c NULL. */ void mbedtls_gcm_init( mbedtls_gcm_context *ctx ); @@ -89,9 +93,10 @@ void mbedtls_gcm_init( mbedtls_gcm_context *ctx ); * \brief This function associates a GCM context with a * cipher algorithm and a key. * - * \param ctx The GCM context to initialize. + * \param ctx The GCM context. This must be initialized. * \param cipher The 128-bit block cipher to use. - * \param key The encryption key. + * \param key The encryption key. This must be a readable buffer of at + * least \p keybits bits. * \param keybits The key size in bits. Valid options are: * <ul><li>128 bits</li> * <li>192 bits</li> @@ -118,7 +123,8 @@ int mbedtls_gcm_setkey( mbedtls_gcm_context *ctx, * authentic. You should use this function to perform encryption * only. For decryption, use mbedtls_gcm_auth_decrypt() instead. * - * \param ctx The GCM context to use for encryption or decryption. + * \param ctx The GCM context to use for encryption or decryption. This + * must be initialized. * \param mode The operation to perform: * - #MBEDTLS_GCM_ENCRYPT to perform authenticated encryption. * The ciphertext is written to \p output and the @@ -132,22 +138,28 @@ int mbedtls_gcm_setkey( mbedtls_gcm_context *ctx, * calling this function in decryption mode. * \param length The length of the input data, which is equal to the length * of the output data. - * \param iv The initialization vector. + * \param iv The initialization vector. This must be a readable buffer of + * at least \p iv_len Bytes. * \param iv_len The length of the IV. - * \param add The buffer holding the additional data. + * \param add The buffer holding the additional data. This must be of at + * least that size in Bytes. * \param add_len The length of the additional data. - * \param input The buffer holding the input data. Its size is \b length. - * \param output The buffer for holding the output data. It must have room - * for \b length bytes. + * \param input The buffer holding the input data. If \p length is greater + * than zero, this must be a readable buffer of at least that + * size in Bytes. + * \param output The buffer for holding the output data. If \p length is greater + * than zero, this must be a writable buffer of at least that + * size in Bytes. * \param tag_len The length of the tag to generate. - * \param tag The buffer for holding the tag. + * \param tag The buffer for holding the tag. This must be a readable + * buffer of at least \p tag_len Bytes. * * \return \c 0 if the encryption or decryption was performed * successfully. Note that in #MBEDTLS_GCM_DECRYPT mode, * this does not indicate that the data is authentic. - * \return #MBEDTLS_ERR_GCM_BAD_INPUT if the lengths are not valid. - * \return #MBEDTLS_ERR_GCM_HW_ACCEL_FAILED or a cipher-specific - * error code if the encryption or decryption failed. + * \return #MBEDTLS_ERR_GCM_BAD_INPUT if the lengths or pointers are + * not valid or a cipher-specific error code if the encryption + * or decryption failed. */ int mbedtls_gcm_crypt_and_tag( mbedtls_gcm_context *ctx, int mode, @@ -169,24 +181,30 @@ int mbedtls_gcm_crypt_and_tag( mbedtls_gcm_context *ctx, * input buffer. If the buffers overlap, the output buffer * must trail at least 8 Bytes behind the input buffer. * - * \param ctx The GCM context. + * \param ctx The GCM context. This must be initialized. * \param length The length of the ciphertext to decrypt, which is also * the length of the decrypted plaintext. - * \param iv The initialization vector. + * \param iv The initialization vector. This must be a readable buffer + * of at least \p iv_len Bytes. * \param iv_len The length of the IV. - * \param add The buffer holding the additional data. + * \param add The buffer holding the additional data. This must be of at + * least that size in Bytes. * \param add_len The length of the additional data. - * \param tag The buffer holding the tag to verify. + * \param tag The buffer holding the tag to verify. This must be a + * readable buffer of at least \p tag_len Bytes. * \param tag_len The length of the tag to verify. - * \param input The buffer holding the ciphertext. Its size is \b length. - * \param output The buffer for holding the decrypted plaintext. It must - * have room for \b length bytes. + * \param input The buffer holding the ciphertext. If \p length is greater + * than zero, this must be a readable buffer of at least that + * size. + * \param output The buffer for holding the decrypted plaintext. If \p length + * is greater than zero, this must be a writable buffer of at + * least that size. * * \return \c 0 if successful and authenticated. * \return #MBEDTLS_ERR_GCM_AUTH_FAILED if the tag does not match. - * \return #MBEDTLS_ERR_GCM_BAD_INPUT if the lengths are not valid. - * \return #MBEDTLS_ERR_GCM_HW_ACCEL_FAILED or a cipher-specific - * error code if the decryption failed. + * \return #MBEDTLS_ERR_GCM_BAD_INPUT if the lengths or pointers are + * not valid or a cipher-specific error code if the decryption + * failed. */ int mbedtls_gcm_auth_decrypt( mbedtls_gcm_context *ctx, size_t length, @@ -203,15 +221,16 @@ int mbedtls_gcm_auth_decrypt( mbedtls_gcm_context *ctx, * \brief This function starts a GCM encryption or decryption * operation. * - * \param ctx The GCM context. + * \param ctx The GCM context. This must be initialized. * \param mode The operation to perform: #MBEDTLS_GCM_ENCRYPT or * #MBEDTLS_GCM_DECRYPT. - * \param iv The initialization vector. + * \param iv The initialization vector. This must be a readable buffer of + * at least \p iv_len Bytes. * \param iv_len The length of the IV. - * \param add The buffer holding the additional data, or NULL - * if \p add_len is 0. - * \param add_len The length of the additional data. If 0, - * \p add is NULL. + * \param add The buffer holding the additional data, or \c NULL + * if \p add_len is \c 0. + * \param add_len The length of the additional data. If \c 0, + * \p add may be \c NULL. * * \return \c 0 on success. */ @@ -234,11 +253,15 @@ int mbedtls_gcm_starts( mbedtls_gcm_context *ctx, * input buffer. If the buffers overlap, the output buffer * must trail at least 8 Bytes behind the input buffer. * - * \param ctx The GCM context. + * \param ctx The GCM context. This must be initialized. * \param length The length of the input data. This must be a multiple of * 16 except in the last call before mbedtls_gcm_finish(). - * \param input The buffer holding the input data. - * \param output The buffer for holding the output data. + * \param input The buffer holding the input data. If \p length is greater + * than zero, this must be a readable buffer of at least that + * size in Bytes. + * \param output The buffer for holding the output data. If \p length is + * greater than zero, this must be a writable buffer of at + * least that size in Bytes. * * \return \c 0 on success. * \return #MBEDTLS_ERR_GCM_BAD_INPUT on failure. @@ -255,9 +278,11 @@ int mbedtls_gcm_update( mbedtls_gcm_context *ctx, * It wraps up the GCM stream, and generates the * tag. The tag can have a maximum length of 16 Bytes. * - * \param ctx The GCM context. - * \param tag The buffer for holding the tag. - * \param tag_len The length of the tag to generate. Must be at least four. + * \param ctx The GCM context. This must be initialized. + * \param tag The buffer for holding the tag. This must be a readable + * buffer of at least \p tag_len Bytes. + * \param tag_len The length of the tag to generate. This must be at least + * four. * * \return \c 0 on success. * \return #MBEDTLS_ERR_GCM_BAD_INPUT on failure. @@ -270,7 +295,8 @@ int mbedtls_gcm_finish( mbedtls_gcm_context *ctx, * \brief This function clears a GCM context and the underlying * cipher sub-context. * - * \param ctx The GCM context to clear. + * \param ctx The GCM context to clear. If this is \c NULL, the call has + * no effect. Otherwise, this must be initialized. */ void mbedtls_gcm_free( mbedtls_gcm_context *ctx ); diff --git a/thirdparty/mbedtls/include/mbedtls/havege.h b/thirdparty/mbedtls/include/mbedtls/havege.h index d4cb3ed38d..57e8c40943 100644 --- a/thirdparty/mbedtls/include/mbedtls/havege.h +++ b/thirdparty/mbedtls/include/mbedtls/havege.h @@ -35,7 +35,7 @@ extern "C" { /** * \brief HAVEGE state structure */ -typedef struct +typedef struct mbedtls_havege_state { int PT1, PT2, offset[2]; int pool[MBEDTLS_HAVEGE_COLLECT_SIZE]; diff --git a/thirdparty/mbedtls/include/mbedtls/hkdf.h b/thirdparty/mbedtls/include/mbedtls/hkdf.h index 6833e7272e..e6ed7cde97 100644 --- a/thirdparty/mbedtls/include/mbedtls/hkdf.h +++ b/thirdparty/mbedtls/include/mbedtls/hkdf.h @@ -73,6 +73,11 @@ int mbedtls_hkdf( const mbedtls_md_info_t *md, const unsigned char *salt, * \brief Take the input keying material \p ikm and extract from it a * fixed-length pseudorandom key \p prk. * + * \warning This function should only be used if the security of it has been + * studied and established in that particular context (eg. TLS 1.3 + * key schedule). For standard HKDF security guarantees use + * \c mbedtls_hkdf instead. + * * \param md A hash function; md.size denotes the length of the * hash function output in bytes. * \param salt An optional salt value (a non-secret random value); @@ -97,10 +102,15 @@ int mbedtls_hkdf_extract( const mbedtls_md_info_t *md, * \brief Expand the supplied \p prk into several additional pseudorandom * keys, which is the output of the HKDF. * + * \warning This function should only be used if the security of it has been + * studied and established in that particular context (eg. TLS 1.3 + * key schedule). For standard HKDF security guarantees use + * \c mbedtls_hkdf instead. + * * \param md A hash function; md.size denotes the length of the hash * function output in bytes. - * \param prk A pseudorandom key of at least md.size bytes. \p prk is usually, - * the output from the HKDF extract step. + * \param prk A pseudorandom key of at least md.size bytes. \p prk is + * usually the output from the HKDF extract step. * \param prk_len The length in bytes of \p prk. * \param info An optional context and application specific information * string. This can be a zero-length string. diff --git a/thirdparty/mbedtls/include/mbedtls/hmac_drbg.h b/thirdparty/mbedtls/include/mbedtls/hmac_drbg.h index 2608de8595..146367b9de 100644 --- a/thirdparty/mbedtls/include/mbedtls/hmac_drbg.h +++ b/thirdparty/mbedtls/include/mbedtls/hmac_drbg.h @@ -74,7 +74,7 @@ extern "C" { /** * HMAC_DRBG context. */ -typedef struct +typedef struct mbedtls_hmac_drbg_context { /* Working state: the key K is not stored explicitely, * but is implied by the HMAC context */ @@ -195,10 +195,13 @@ void mbedtls_hmac_drbg_set_reseed_interval( mbedtls_hmac_drbg_context *ctx, * \param additional Additional data to update state with, or NULL * \param add_len Length of additional data, or 0 * + * \return \c 0 on success, or an error from the underlying + * hash calculation. + * * \note Additional data is optional, pass NULL and 0 as second * third argument if no additional data is being used. */ -void mbedtls_hmac_drbg_update( mbedtls_hmac_drbg_context *ctx, +int mbedtls_hmac_drbg_update_ret( mbedtls_hmac_drbg_context *ctx, const unsigned char *additional, size_t add_len ); /** @@ -257,6 +260,31 @@ int mbedtls_hmac_drbg_random( void *p_rng, unsigned char *output, size_t out_len */ void mbedtls_hmac_drbg_free( mbedtls_hmac_drbg_context *ctx ); +#if ! defined(MBEDTLS_DEPRECATED_REMOVED) +#if defined(MBEDTLS_DEPRECATED_WARNING) +#define MBEDTLS_DEPRECATED __attribute__((deprecated)) +#else +#define MBEDTLS_DEPRECATED +#endif +/** + * \brief HMAC_DRBG update state + * + * \deprecated Superseded by mbedtls_hmac_drbg_update_ret() + * in 2.16.0. + * + * \param ctx HMAC_DRBG context + * \param additional Additional data to update state with, or NULL + * \param add_len Length of additional data, or 0 + * + * \note Additional data is optional, pass NULL and 0 as second + * third argument if no additional data is being used. + */ +MBEDTLS_DEPRECATED void mbedtls_hmac_drbg_update( + mbedtls_hmac_drbg_context *ctx, + const unsigned char *additional, size_t add_len ); +#undef MBEDTLS_DEPRECATED +#endif /* !MBEDTLS_DEPRECATED_REMOVED */ + #if defined(MBEDTLS_FS_IO) /** * \brief Write a seed file diff --git a/thirdparty/mbedtls/include/mbedtls/md.h b/thirdparty/mbedtls/include/mbedtls/md.h index 6b6f5c53dd..8bcf766a6c 100644 --- a/thirdparty/mbedtls/include/mbedtls/md.h +++ b/thirdparty/mbedtls/include/mbedtls/md.h @@ -39,6 +39,8 @@ #define MBEDTLS_ERR_MD_BAD_INPUT_DATA -0x5100 /**< Bad input parameters to function. */ #define MBEDTLS_ERR_MD_ALLOC_FAILED -0x5180 /**< Failed to allocate memory. */ #define MBEDTLS_ERR_MD_FILE_IO_ERROR -0x5200 /**< Opening or reading of file failed. */ + +/* MBEDTLS_ERR_MD_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_MD_HW_ACCEL_FAILED -0x5280 /**< MD hardware accelerator failed. */ #ifdef __cplusplus @@ -80,7 +82,8 @@ typedef struct mbedtls_md_info_t mbedtls_md_info_t; /** * The generic message-digest context. */ -typedef struct { +typedef struct mbedtls_md_context_t +{ /** Information about the associated message digest. */ const mbedtls_md_info_t *md_info; diff --git a/thirdparty/mbedtls/include/mbedtls/md2.h b/thirdparty/mbedtls/include/mbedtls/md2.h index 08e75b247b..f9bd98f804 100644 --- a/thirdparty/mbedtls/include/mbedtls/md2.h +++ b/thirdparty/mbedtls/include/mbedtls/md2.h @@ -37,6 +37,7 @@ #include <stddef.h> +/* MBEDTLS_ERR_MD2_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_MD2_HW_ACCEL_FAILED -0x002B /**< MD2 hardware accelerator failed */ #ifdef __cplusplus @@ -55,7 +56,7 @@ extern "C" { * stronger message digests instead. * */ -typedef struct +typedef struct mbedtls_md2_context { unsigned char cksum[16]; /*!< checksum of the data block */ unsigned char state[48]; /*!< intermediate digest state */ diff --git a/thirdparty/mbedtls/include/mbedtls/md4.h b/thirdparty/mbedtls/include/mbedtls/md4.h index 8ee4e5cabf..dc3c048949 100644 --- a/thirdparty/mbedtls/include/mbedtls/md4.h +++ b/thirdparty/mbedtls/include/mbedtls/md4.h @@ -38,6 +38,7 @@ #include <stddef.h> #include <stdint.h> +/* MBEDTLS_ERR_MD4_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_MD4_HW_ACCEL_FAILED -0x002D /**< MD4 hardware accelerator failed */ #ifdef __cplusplus @@ -56,7 +57,7 @@ extern "C" { * stronger message digests instead. * */ -typedef struct +typedef struct mbedtls_md4_context { uint32_t total[2]; /*!< number of bytes processed */ uint32_t state[4]; /*!< intermediate digest state */ diff --git a/thirdparty/mbedtls/include/mbedtls/md5.h b/thirdparty/mbedtls/include/mbedtls/md5.h index 43ead4b747..6c3354fd30 100644 --- a/thirdparty/mbedtls/include/mbedtls/md5.h +++ b/thirdparty/mbedtls/include/mbedtls/md5.h @@ -37,6 +37,7 @@ #include <stddef.h> #include <stdint.h> +/* MBEDTLS_ERR_MD5_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_MD5_HW_ACCEL_FAILED -0x002F /**< MD5 hardware accelerator failed */ #ifdef __cplusplus @@ -55,7 +56,7 @@ extern "C" { * stronger message digests instead. * */ -typedef struct +typedef struct mbedtls_md5_context { uint32_t total[2]; /*!< number of bytes processed */ uint32_t state[4]; /*!< intermediate digest state */ diff --git a/thirdparty/mbedtls/include/mbedtls/net_sockets.h b/thirdparty/mbedtls/include/mbedtls/net_sockets.h index 9f07eeb4d3..4c7ef00fe6 100644 --- a/thirdparty/mbedtls/include/mbedtls/net_sockets.h +++ b/thirdparty/mbedtls/include/mbedtls/net_sockets.h @@ -84,7 +84,7 @@ extern "C" { * (eg two file descriptors for combined IPv4 + IPv6 support, or additional * structures for hand-made UDP demultiplexing). */ -typedef struct +typedef struct mbedtls_net_context { int fd; /**< The underlying file descriptor */ } diff --git a/thirdparty/mbedtls/include/mbedtls/oid.h b/thirdparty/mbedtls/include/mbedtls/oid.h index f82554844c..6fbd018aaa 100644 --- a/thirdparty/mbedtls/include/mbedtls/oid.h +++ b/thirdparty/mbedtls/include/mbedtls/oid.h @@ -403,7 +403,8 @@ extern "C" { /** * \brief Base OID descriptor structure */ -typedef struct { +typedef struct mbedtls_oid_descriptor_t +{ const char *asn1; /*!< OID ASN.1 representation */ size_t asn1_len; /*!< length of asn1 */ const char *name; /*!< official name (e.g. from RFC) */ diff --git a/thirdparty/mbedtls/include/mbedtls/padlock.h b/thirdparty/mbedtls/include/mbedtls/padlock.h index 677936ebf8..7a5d083a95 100644 --- a/thirdparty/mbedtls/include/mbedtls/padlock.h +++ b/thirdparty/mbedtls/include/mbedtls/padlock.h @@ -3,6 +3,9 @@ * * \brief VIA PadLock ACE for HW encryption/decryption supported by some * processors + * + * \warning These functions are only for internal use by other library + * functions; you must not call them directly. */ /* * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved @@ -57,7 +60,10 @@ extern "C" { #endif /** - * \brief PadLock detection routine + * \brief Internal PadLock detection routine + * + * \note This function is only for internal use by other library + * functions; you must not call it directly. * * \param feature The feature to detect * @@ -66,7 +72,10 @@ extern "C" { int mbedtls_padlock_has_support( int feature ); /** - * \brief PadLock AES-ECB block en(de)cryption + * \brief Internal PadLock AES-ECB block en(de)cryption + * + * \note This function is only for internal use by other library + * functions; you must not call it directly. * * \param ctx AES context * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT @@ -76,12 +85,15 @@ int mbedtls_padlock_has_support( int feature ); * \return 0 if success, 1 if operation failed */ int mbedtls_padlock_xcryptecb( mbedtls_aes_context *ctx, - int mode, - const unsigned char input[16], - unsigned char output[16] ); + int mode, + const unsigned char input[16], + unsigned char output[16] ); /** - * \brief PadLock AES-CBC buffer en(de)cryption + * \brief Internal PadLock AES-CBC buffer en(de)cryption + * + * \note This function is only for internal use by other library + * functions; you must not call it directly. * * \param ctx AES context * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT @@ -93,11 +105,11 @@ int mbedtls_padlock_xcryptecb( mbedtls_aes_context *ctx, * \return 0 if success, 1 if operation failed */ int mbedtls_padlock_xcryptcbc( mbedtls_aes_context *ctx, - int mode, - size_t length, - unsigned char iv[16], - const unsigned char *input, - unsigned char *output ); + int mode, + size_t length, + unsigned char iv[16], + const unsigned char *input, + unsigned char *output ); #ifdef __cplusplus } diff --git a/thirdparty/mbedtls/include/mbedtls/pem.h b/thirdparty/mbedtls/include/mbedtls/pem.h index 2cf4c0a709..fa82f7bdbd 100644 --- a/thirdparty/mbedtls/include/mbedtls/pem.h +++ b/thirdparty/mbedtls/include/mbedtls/pem.h @@ -51,7 +51,7 @@ extern "C" { /** * \brief PEM context structure */ -typedef struct +typedef struct mbedtls_pem_context { unsigned char *buf; /*!< buffer for decoded data */ size_t buflen; /*!< length of the buffer */ diff --git a/thirdparty/mbedtls/include/mbedtls/pk.h b/thirdparty/mbedtls/include/mbedtls/pk.h index ee06b2fd20..91950f9407 100644 --- a/thirdparty/mbedtls/include/mbedtls/pk.h +++ b/thirdparty/mbedtls/include/mbedtls/pk.h @@ -64,6 +64,8 @@ #define MBEDTLS_ERR_PK_UNKNOWN_NAMED_CURVE -0x3A00 /**< Elliptic curve is unsupported (only NIST curves are supported). */ #define MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE -0x3980 /**< Unavailable feature, e.g. RSA disabled for RSA key. */ #define MBEDTLS_ERR_PK_SIG_LEN_MISMATCH -0x3900 /**< The buffer contains a valid signature followed by more data. */ + +/* MBEDTLS_ERR_PK_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_PK_HW_ACCEL_FAILED -0x3880 /**< PK hardware accelerator failed. */ #ifdef __cplusplus @@ -87,7 +89,7 @@ typedef enum { * \brief Options for RSASSA-PSS signature verification. * See \c mbedtls_rsa_rsassa_pss_verify_ext() */ -typedef struct +typedef struct mbedtls_pk_rsassa_pss_options { mbedtls_md_type_t mgf1_hash_id; int expected_salt_len; @@ -107,7 +109,7 @@ typedef enum /** * \brief Item to send to the debug module */ -typedef struct +typedef struct mbedtls_pk_debug_item { mbedtls_pk_debug_type type; const char *name; @@ -125,12 +127,26 @@ typedef struct mbedtls_pk_info_t mbedtls_pk_info_t; /** * \brief Public key container */ -typedef struct +typedef struct mbedtls_pk_context { - const mbedtls_pk_info_t * pk_info; /**< Public key informations */ + const mbedtls_pk_info_t * pk_info; /**< Public key information */ void * pk_ctx; /**< Underlying public key context */ } mbedtls_pk_context; +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) +/** + * \brief Context for resuming operations + */ +typedef struct +{ + const mbedtls_pk_info_t * pk_info; /**< Public key information */ + void * rs_ctx; /**< Underlying restart context */ +} mbedtls_pk_restart_ctx; +#else /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ +/* Now we can declare functions that take a pointer to that */ +typedef void mbedtls_pk_restart_ctx; +#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ + #if defined(MBEDTLS_RSA_C) /** * Quick access to an RSA context inside a PK context. @@ -181,20 +197,45 @@ typedef size_t (*mbedtls_pk_rsa_alt_key_len_func)( void *ctx ); const mbedtls_pk_info_t *mbedtls_pk_info_from_type( mbedtls_pk_type_t pk_type ); /** - * \brief Initialize a mbedtls_pk_context (as NONE) + * \brief Initialize a #mbedtls_pk_context (as NONE). + * + * \param ctx The context to initialize. + * This must not be \c NULL. */ void mbedtls_pk_init( mbedtls_pk_context *ctx ); /** - * \brief Free a mbedtls_pk_context + * \brief Free the components of a #mbedtls_pk_context. + * + * \param ctx The context to clear. It must have been initialized. + * If this is \c NULL, this function does nothing. */ void mbedtls_pk_free( mbedtls_pk_context *ctx ); +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) +/** + * \brief Initialize a restart context + * + * \param ctx The context to initialize. + * This must not be \c NULL. + */ +void mbedtls_pk_restart_init( mbedtls_pk_restart_ctx *ctx ); + +/** + * \brief Free the components of a restart context + * + * \param ctx The context to clear. It must have been initialized. + * If this is \c NULL, this function does nothing. + */ +void mbedtls_pk_restart_free( mbedtls_pk_restart_ctx *ctx ); +#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ + /** * \brief Initialize a PK context with the information given * and allocates the type-specific PK subcontext. * - * \param ctx Context to initialize. Must be empty (type NONE). + * \param ctx Context to initialize. It must not have been set + * up yet (type #MBEDTLS_PK_NONE). * \param info Information to use * * \return 0 on success, @@ -210,7 +251,8 @@ int mbedtls_pk_setup( mbedtls_pk_context *ctx, const mbedtls_pk_info_t *info ); /** * \brief Initialize an RSA-alt context * - * \param ctx Context to initialize. Must be empty (type NONE). + * \param ctx Context to initialize. It must not have been set + * up yet (type #MBEDTLS_PK_NONE). * \param key RSA key pointer * \param decrypt_func Decryption function * \param sign_func Signing function @@ -230,7 +272,7 @@ int mbedtls_pk_setup_rsa_alt( mbedtls_pk_context *ctx, void * key, /** * \brief Get the size in bits of the underlying key * - * \param ctx Context to use + * \param ctx The context to query. It must have been initialized. * * \return Key size in bits, or 0 on error */ @@ -238,7 +280,8 @@ size_t mbedtls_pk_get_bitlen( const mbedtls_pk_context *ctx ); /** * \brief Get the length in bytes of the underlying key - * \param ctx Context to use + * + * \param ctx The context to query. It must have been initialized. * * \return Key length in bytes, or 0 on error */ @@ -250,18 +293,21 @@ static inline size_t mbedtls_pk_get_len( const mbedtls_pk_context *ctx ) /** * \brief Tell if a context can do the operation given by type * - * \param ctx Context to test - * \param type Target type + * \param ctx The context to query. It must have been initialized. + * \param type The desired type. * - * \return 0 if context can't do the operations, - * 1 otherwise. + * \return 1 if the context can do operations on the given type. + * \return 0 if the context cannot do the operations on the given + * type. This is always the case for a context that has + * been initialized but not set up, or that has been + * cleared with mbedtls_pk_free(). */ int mbedtls_pk_can_do( const mbedtls_pk_context *ctx, mbedtls_pk_type_t type ); /** * \brief Verify signature (including padding if relevant). * - * \param ctx PK context to use + * \param ctx The PK context to use. It must have been set up. * \param md_alg Hash algorithm used (see notes) * \param hash Hash of the message to sign * \param hash_len Hash length or 0 (see notes) @@ -287,12 +333,38 @@ int mbedtls_pk_verify( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg, const unsigned char *sig, size_t sig_len ); /** + * \brief Restartable version of \c mbedtls_pk_verify() + * + * \note Performs the same job as \c mbedtls_pk_verify(), but can + * return early and restart according to the limit set with + * \c mbedtls_ecp_set_max_ops() to reduce blocking for ECC + * operations. For RSA, same as \c mbedtls_pk_verify(). + * + * \param ctx The PK context to use. It must have been set up. + * \param md_alg Hash algorithm used (see notes) + * \param hash Hash of the message to sign + * \param hash_len Hash length or 0 (see notes) + * \param sig Signature to verify + * \param sig_len Signature length + * \param rs_ctx Restart context (NULL to disable restart) + * + * \return See \c mbedtls_pk_verify(), or + * \return #MBEDTLS_ERR_ECP_IN_PROGRESS if maximum number of + * operations was reached: see \c mbedtls_ecp_set_max_ops(). + */ +int mbedtls_pk_verify_restartable( mbedtls_pk_context *ctx, + mbedtls_md_type_t md_alg, + const unsigned char *hash, size_t hash_len, + const unsigned char *sig, size_t sig_len, + mbedtls_pk_restart_ctx *rs_ctx ); + +/** * \brief Verify signature, with options. * (Includes verification of the padding depending on type.) * * \param type Signature type (inc. possible padding type) to verify * \param options Pointer to type-specific options, or NULL - * \param ctx PK context to use + * \param ctx The PK context to use. It must have been set up. * \param md_alg Hash algorithm used (see notes) * \param hash Hash of the message to sign * \param hash_len Hash length or 0 (see notes) @@ -323,7 +395,8 @@ int mbedtls_pk_verify_ext( mbedtls_pk_type_t type, const void *options, /** * \brief Make signature, including padding if relevant. * - * \param ctx PK context to use - must hold a private key + * \param ctx The PK context to use. It must have been set up + * with a private key. * \param md_alg Hash algorithm used (see notes) * \param hash Hash of the message to sign * \param hash_len Hash length or 0 (see notes) @@ -350,9 +423,40 @@ int mbedtls_pk_sign( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg, int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ); /** + * \brief Restartable version of \c mbedtls_pk_sign() + * + * \note Performs the same job as \c mbedtls_pk_sign(), but can + * return early and restart according to the limit set with + * \c mbedtls_ecp_set_max_ops() to reduce blocking for ECC + * operations. For RSA, same as \c mbedtls_pk_sign(). + * + * \param ctx The PK context to use. It must have been set up + * with a private key. + * \param md_alg Hash algorithm used (see notes) + * \param hash Hash of the message to sign + * \param hash_len Hash length or 0 (see notes) + * \param sig Place to write the signature + * \param sig_len Number of bytes written + * \param f_rng RNG function + * \param p_rng RNG parameter + * \param rs_ctx Restart context (NULL to disable restart) + * + * \return See \c mbedtls_pk_sign(), or + * \return #MBEDTLS_ERR_ECP_IN_PROGRESS if maximum number of + * operations was reached: see \c mbedtls_ecp_set_max_ops(). + */ +int mbedtls_pk_sign_restartable( mbedtls_pk_context *ctx, + mbedtls_md_type_t md_alg, + const unsigned char *hash, size_t hash_len, + unsigned char *sig, size_t *sig_len, + int (*f_rng)(void *, unsigned char *, size_t), void *p_rng, + mbedtls_pk_restart_ctx *rs_ctx ); + +/** * \brief Decrypt message (including padding if relevant). * - * \param ctx PK context to use - must hold a private key + * \param ctx The PK context to use. It must have been set up + * with a private key. * \param input Input to decrypt * \param ilen Input size * \param output Decrypted output @@ -373,7 +477,7 @@ int mbedtls_pk_decrypt( mbedtls_pk_context *ctx, /** * \brief Encrypt message (including padding if relevant). * - * \param ctx PK context to use + * \param ctx The PK context to use. It must have been set up. * \param input Message to encrypt * \param ilen Message size * \param output Encrypted output @@ -404,7 +508,7 @@ int mbedtls_pk_check_pair( const mbedtls_pk_context *pub, const mbedtls_pk_conte /** * \brief Export debug information * - * \param ctx Context to use + * \param ctx The PK context to use. It must have been initialized. * \param items Place to write debug items * * \return 0 on success or MBEDTLS_ERR_PK_BAD_INPUT_DATA @@ -414,7 +518,7 @@ int mbedtls_pk_debug( const mbedtls_pk_context *ctx, mbedtls_pk_debug_item *item /** * \brief Access the type name * - * \param ctx Context to use + * \param ctx The PK context to use. It must have been initialized. * * \return Type name on success, or "invalid PK" */ @@ -423,9 +527,10 @@ const char * mbedtls_pk_get_name( const mbedtls_pk_context *ctx ); /** * \brief Get the key type * - * \param ctx Context to use + * \param ctx The PK context to use. It must have been initialized. * - * \return Type on success, or MBEDTLS_PK_NONE + * \return Type on success. + * \return #MBEDTLS_PK_NONE for a context that has not been set up. */ mbedtls_pk_type_t mbedtls_pk_get_type( const mbedtls_pk_context *ctx ); @@ -434,12 +539,22 @@ mbedtls_pk_type_t mbedtls_pk_get_type( const mbedtls_pk_context *ctx ); /** * \brief Parse a private key in PEM or DER format * - * \param ctx key to be initialized - * \param key input buffer - * \param keylen size of the buffer - * (including the terminating null byte for PEM data) - * \param pwd password for decryption (optional) - * \param pwdlen size of the password + * \param ctx The PK context to fill. It must have been initialized + * but not set up. + * \param key Input buffer to parse. + * The buffer must contain the input exactly, with no + * extra trailing material. For PEM, the buffer must + * contain a null-terminated string. + * \param keylen Size of \b key in bytes. + * For PEM data, this includes the terminating null byte, + * so \p keylen must be equal to `strlen(key) + 1`. + * \param pwd Optional password for decryption. + * Pass \c NULL if expecting a non-encrypted key. + * Pass a string of \p pwdlen bytes if expecting an encrypted + * key; a non-encrypted key will also be accepted. + * The empty password is not supported. + * \param pwdlen Size of the password in bytes. + * Ignored if \p pwd is \c NULL. * * \note On entry, ctx must be empty, either freshly initialised * with mbedtls_pk_init() or reset with mbedtls_pk_free(). If you need a @@ -457,10 +572,15 @@ int mbedtls_pk_parse_key( mbedtls_pk_context *ctx, /** * \brief Parse a public key in PEM or DER format * - * \param ctx key to be initialized - * \param key input buffer - * \param keylen size of the buffer - * (including the terminating null byte for PEM data) + * \param ctx The PK context to fill. It must have been initialized + * but not set up. + * \param key Input buffer to parse. + * The buffer must contain the input exactly, with no + * extra trailing material. For PEM, the buffer must + * contain a null-terminated string. + * \param keylen Size of \b key in bytes. + * For PEM data, this includes the terminating null byte, + * so \p keylen must be equal to `strlen(key) + 1`. * * \note On entry, ctx must be empty, either freshly initialised * with mbedtls_pk_init() or reset with mbedtls_pk_free(). If you need a @@ -478,9 +598,14 @@ int mbedtls_pk_parse_public_key( mbedtls_pk_context *ctx, /** * \brief Load and parse a private key * - * \param ctx key to be initialized + * \param ctx The PK context to fill. It must have been initialized + * but not set up. * \param path filename to read the private key from - * \param password password to decrypt the file (can be NULL) + * \param password Optional password to decrypt the file. + * Pass \c NULL if expecting a non-encrypted key. + * Pass a null-terminated string if expecting an encrypted + * key; a non-encrypted key will also be accepted. + * The empty password is not supported. * * \note On entry, ctx must be empty, either freshly initialised * with mbedtls_pk_init() or reset with mbedtls_pk_free(). If you need a @@ -497,7 +622,8 @@ int mbedtls_pk_parse_keyfile( mbedtls_pk_context *ctx, /** * \brief Load and parse a public key * - * \param ctx key to be initialized + * \param ctx The PK context to fill. It must have been initialized + * but not set up. * \param path filename to read the public key from * * \note On entry, ctx must be empty, either freshly initialised @@ -520,7 +646,7 @@ int mbedtls_pk_parse_public_keyfile( mbedtls_pk_context *ctx, const char *path ) * return value to determine where you should start * using the buffer * - * \param ctx private to write away + * \param ctx PK context which must contain a valid private key. * \param buf buffer to write to * \param size size of the buffer * @@ -535,7 +661,7 @@ int mbedtls_pk_write_key_der( mbedtls_pk_context *ctx, unsigned char *buf, size_ * return value to determine where you should start * using the buffer * - * \param ctx public key to write away + * \param ctx PK context which must contain a valid public or private key. * \param buf buffer to write to * \param size size of the buffer * @@ -548,9 +674,10 @@ int mbedtls_pk_write_pubkey_der( mbedtls_pk_context *ctx, unsigned char *buf, si /** * \brief Write a public key to a PEM string * - * \param ctx public key to write away - * \param buf buffer to write to - * \param size size of the buffer + * \param ctx PK context which must contain a valid public or private key. + * \param buf Buffer to write to. The output includes a + * terminating null byte. + * \param size Size of the buffer in bytes. * * \return 0 if successful, or a specific error code */ @@ -559,9 +686,10 @@ int mbedtls_pk_write_pubkey_pem( mbedtls_pk_context *ctx, unsigned char *buf, si /** * \brief Write a private key to a PKCS#1 or SEC1 PEM string * - * \param ctx private to write away - * \param buf buffer to write to - * \param size size of the buffer + * \param ctx PK context which must contain a valid private key. + * \param buf Buffer to write to. The output includes a + * terminating null byte. + * \param size Size of the buffer in bytes. * * \return 0 if successful, or a specific error code */ @@ -580,7 +708,8 @@ int mbedtls_pk_write_key_pem( mbedtls_pk_context *ctx, unsigned char *buf, size_ * * \param p the position in the ASN.1 data * \param end end of the buffer - * \param pk the key to fill + * \param pk The PK context to fill. It must have been initialized + * but not set up. * * \return 0 if successful, or a specific PK error code */ @@ -595,7 +724,7 @@ int mbedtls_pk_parse_subpubkey( unsigned char **p, const unsigned char *end, * * \param p reference to current position pointer * \param start start of the buffer (for bounds-checking) - * \param key public key to write away + * \param key PK context which must contain a valid public or private key. * * \return the length written or a negative error code */ diff --git a/thirdparty/mbedtls/include/mbedtls/pk_internal.h b/thirdparty/mbedtls/include/mbedtls/pk_internal.h index 3dae0fc5b2..48b7a5f7bf 100644 --- a/thirdparty/mbedtls/include/mbedtls/pk_internal.h +++ b/thirdparty/mbedtls/include/mbedtls/pk_internal.h @@ -59,6 +59,21 @@ struct mbedtls_pk_info_t int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ); +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + /** Verify signature (restartable) */ + int (*verify_rs_func)( void *ctx, mbedtls_md_type_t md_alg, + const unsigned char *hash, size_t hash_len, + const unsigned char *sig, size_t sig_len, + void *rs_ctx ); + + /** Make signature (restartable) */ + int (*sign_rs_func)( void *ctx, mbedtls_md_type_t md_alg, + const unsigned char *hash, size_t hash_len, + unsigned char *sig, size_t *sig_len, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng, void *rs_ctx ); +#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ + /** Decrypt message */ int (*decrypt_func)( void *ctx, const unsigned char *input, size_t ilen, unsigned char *output, size_t *olen, size_t osize, @@ -80,6 +95,14 @@ struct mbedtls_pk_info_t /** Free the given context */ void (*ctx_free_func)( void *ctx ); +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + /** Allocate the restart context */ + void * (*rs_alloc_func)( void ); + + /** Free the restart context */ + void (*rs_free_func)( void *rs_ctx ); +#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ + /** Interface with the debug module */ void (*debug_func)( const void *ctx, mbedtls_pk_debug_item *items ); diff --git a/thirdparty/mbedtls/include/mbedtls/pkcs11.h b/thirdparty/mbedtls/include/mbedtls/pkcs11.h index bf65c55a79..02427ddc1e 100644 --- a/thirdparty/mbedtls/include/mbedtls/pkcs11.h +++ b/thirdparty/mbedtls/include/mbedtls/pkcs11.h @@ -50,7 +50,8 @@ extern "C" { /** * Context for PKCS #11 private keys. */ -typedef struct { +typedef struct mbedtls_pkcs11_context +{ pkcs11h_certificate_t pkcs11h_cert; int len; } mbedtls_pkcs11_context; diff --git a/thirdparty/mbedtls/include/mbedtls/pkcs12.h b/thirdparty/mbedtls/include/mbedtls/pkcs12.h index a621ef5b15..69f04177c8 100644 --- a/thirdparty/mbedtls/include/mbedtls/pkcs12.h +++ b/thirdparty/mbedtls/include/mbedtls/pkcs12.h @@ -46,6 +46,8 @@ extern "C" { #endif +#if defined(MBEDTLS_ASN1_PARSE_C) + /** * \brief PKCS12 Password Based function (encryption / decryption) * for pbeWithSHAAnd128BitRC4 @@ -87,6 +89,8 @@ int mbedtls_pkcs12_pbe( mbedtls_asn1_buf *pbe_params, int mode, const unsigned char *input, size_t len, unsigned char *output ); +#endif /* MBEDTLS_ASN1_PARSE_C */ + /** * \brief The PKCS#12 derivation function uses a password and a salt * to produce pseudo-random bits for a particular "purpose". diff --git a/thirdparty/mbedtls/include/mbedtls/pkcs5.h b/thirdparty/mbedtls/include/mbedtls/pkcs5.h index 9a3c9fddcc..d4bb36dfae 100644 --- a/thirdparty/mbedtls/include/mbedtls/pkcs5.h +++ b/thirdparty/mbedtls/include/mbedtls/pkcs5.h @@ -44,6 +44,8 @@ extern "C" { #endif +#if defined(MBEDTLS_ASN1_PARSE_C) + /** * \brief PKCS#5 PBES2 function * @@ -62,6 +64,8 @@ int mbedtls_pkcs5_pbes2( const mbedtls_asn1_buf *pbe_params, int mode, const unsigned char *data, size_t datalen, unsigned char *output ); +#endif /* MBEDTLS_ASN1_PARSE_C */ + /** * \brief PKCS#5 PBKDF2 using HMAC * diff --git a/thirdparty/mbedtls/include/mbedtls/platform.h b/thirdparty/mbedtls/include/mbedtls/platform.h index 624cc642ac..89fe8a7b19 100644 --- a/thirdparty/mbedtls/include/mbedtls/platform.h +++ b/thirdparty/mbedtls/include/mbedtls/platform.h @@ -43,6 +43,9 @@ #include "platform_time.h" #endif +#define MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED -0x0070 /**< Hardware accelerator failed */ +#define MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED -0x0072 /**< The requested feature is not supported by the platform */ + #ifdef __cplusplus extern "C" { #endif @@ -315,7 +318,8 @@ int mbedtls_platform_set_nv_seed( * \note This structure may be used to assist platform-specific * setup or teardown operations. */ -typedef struct { +typedef struct mbedtls_platform_context +{ char dummy; /**< A placeholder member, as empty structs are not portable. */ } mbedtls_platform_context; diff --git a/thirdparty/mbedtls/include/mbedtls/platform_util.h b/thirdparty/mbedtls/include/mbedtls/platform_util.h index 84f0732eeb..b0e72ad149 100644 --- a/thirdparty/mbedtls/include/mbedtls/platform_util.h +++ b/thirdparty/mbedtls/include/mbedtls/platform_util.h @@ -25,12 +25,104 @@ #ifndef MBEDTLS_PLATFORM_UTIL_H #define MBEDTLS_PLATFORM_UTIL_H +#if !defined(MBEDTLS_CONFIG_FILE) +#include "mbedtls/config.h" +#else +#include MBEDTLS_CONFIG_FILE +#endif + #include <stddef.h> +#if defined(MBEDTLS_HAVE_TIME_DATE) +#include "mbedtls/platform_time.h" +#include <time.h> +#endif /* MBEDTLS_HAVE_TIME_DATE */ #ifdef __cplusplus extern "C" { #endif +#if defined(MBEDTLS_CHECK_PARAMS) + +#if defined(MBEDTLS_PARAM_FAILED) +/** An alternative definition of MBEDTLS_PARAM_FAILED has been set in config.h. + * + * This flag can be used to check whether it is safe to assume that + * MBEDTLS_PARAM_FAILED() will expand to a call to mbedtls_param_failed(). + */ +#define MBEDTLS_PARAM_FAILED_ALT +#else /* MBEDTLS_PARAM_FAILED */ +#define MBEDTLS_PARAM_FAILED( cond ) \ + mbedtls_param_failed( #cond, __FILE__, __LINE__ ) + +/** + * \brief User supplied callback function for parameter validation failure. + * See #MBEDTLS_CHECK_PARAMS for context. + * + * This function will be called unless an alternative treatement + * is defined through the #MBEDTLS_PARAM_FAILED macro. + * + * This function can return, and the operation will be aborted, or + * alternatively, through use of setjmp()/longjmp() can resume + * execution in the application code. + * + * \param failure_condition The assertion that didn't hold. + * \param file The file where the assertion failed. + * \param line The line in the file where the assertion failed. + */ +void mbedtls_param_failed( const char *failure_condition, + const char *file, + int line ); +#endif /* MBEDTLS_PARAM_FAILED */ + +/* Internal macro meant to be called only from within the library. */ +#define MBEDTLS_INTERNAL_VALIDATE_RET( cond, ret ) \ + do { \ + if( !(cond) ) \ + { \ + MBEDTLS_PARAM_FAILED( cond ); \ + return( ret ); \ + } \ + } while( 0 ) + +/* Internal macro meant to be called only from within the library. */ +#define MBEDTLS_INTERNAL_VALIDATE( cond ) \ + do { \ + if( !(cond) ) \ + { \ + MBEDTLS_PARAM_FAILED( cond ); \ + return; \ + } \ + } while( 0 ) + +#else /* MBEDTLS_CHECK_PARAMS */ + +/* Internal macros meant to be called only from within the library. */ +#define MBEDTLS_INTERNAL_VALIDATE_RET( cond, ret ) do { } while( 0 ) +#define MBEDTLS_INTERNAL_VALIDATE( cond ) do { } while( 0 ) + +#endif /* MBEDTLS_CHECK_PARAMS */ + +/* Internal helper macros for deprecating API constants. */ +#if !defined(MBEDTLS_DEPRECATED_REMOVED) +#if defined(MBEDTLS_DEPRECATED_WARNING) +/* Deliberately don't (yet) export MBEDTLS_DEPRECATED here + * to avoid conflict with other headers which define and use + * it, too. We might want to move all these definitions here at + * some point for uniformity. */ +#define MBEDTLS_DEPRECATED __attribute__((deprecated)) +MBEDTLS_DEPRECATED typedef char const * mbedtls_deprecated_string_constant_t; +#define MBEDTLS_DEPRECATED_STRING_CONSTANT( VAL ) \ + ( (mbedtls_deprecated_string_constant_t) ( VAL ) ) +MBEDTLS_DEPRECATED typedef int mbedtls_deprecated_numeric_constant_t; +#define MBEDTLS_DEPRECATED_NUMERIC_CONSTANT( VAL ) \ + ( (mbedtls_deprecated_numeric_constant_t) ( VAL ) ) +#undef MBEDTLS_DEPRECATED +#else /* MBEDTLS_DEPRECATED_WARNING */ +#define MBEDTLS_DEPRECATED_STRING_CONSTANT( VAL ) VAL +#define MBEDTLS_DEPRECATED_NUMERIC_CONSTANT( VAL ) VAL +#endif /* MBEDTLS_DEPRECATED_WARNING */ +#endif /* MBEDTLS_DEPRECATED_REMOVED */ + /** * \brief Securely zeroize a buffer * @@ -55,6 +147,37 @@ extern "C" { */ void mbedtls_platform_zeroize( void *buf, size_t len ); +#if defined(MBEDTLS_HAVE_TIME_DATE) +/** + * \brief Platform-specific implementation of gmtime_r() + * + * The function is a thread-safe abstraction that behaves + * similarly to the gmtime_r() function from Unix/POSIX. + * + * Mbed TLS will try to identify the underlying platform and + * make use of an appropriate underlying implementation (e.g. + * gmtime_r() for POSIX and gmtime_s() for Windows). If this is + * not possible, then gmtime() will be used. In this case, calls + * from the library to gmtime() will be guarded by the mutex + * mbedtls_threading_gmtime_mutex if MBEDTLS_THREADING_C is + * enabled. It is recommended that calls from outside the library + * are also guarded by this mutex. + * + * If MBEDTLS_PLATFORM_GMTIME_R_ALT is defined, then Mbed TLS will + * unconditionally use the alternative implementation for + * mbedtls_platform_gmtime_r() supplied by the user at compile time. + * + * \param tt Pointer to an object containing time (in seconds) since the + * epoch to be converted + * \param tm_buf Pointer to an object where the results will be stored + * + * \return Pointer to an object of type struct tm on success, otherwise + * NULL + */ +struct tm *mbedtls_platform_gmtime_r( const mbedtls_time_t *tt, + struct tm *tm_buf ); +#endif /* MBEDTLS_HAVE_TIME_DATE */ + #ifdef __cplusplus } #endif diff --git a/thirdparty/mbedtls/include/mbedtls/poly1305.h b/thirdparty/mbedtls/include/mbedtls/poly1305.h index 54b50abc25..05866a2da6 100644 --- a/thirdparty/mbedtls/include/mbedtls/poly1305.h +++ b/thirdparty/mbedtls/include/mbedtls/poly1305.h @@ -43,7 +43,13 @@ #include <stddef.h> #define MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA -0x0057 /**< Invalid input parameter(s). */ + +/* MBEDTLS_ERR_POLY1305_FEATURE_UNAVAILABLE is deprecated and should not be + * used. */ #define MBEDTLS_ERR_POLY1305_FEATURE_UNAVAILABLE -0x0059 /**< Feature not available. For example, s part of the API is not implemented. */ + +/* MBEDTLS_ERR_POLY1305_HW_ACCEL_FAILED is deprecated and should not be used. + */ #define MBEDTLS_ERR_POLY1305_HW_ACCEL_FAILED -0x005B /**< Poly1305 hardware accelerator failed. */ #ifdef __cplusplus @@ -52,7 +58,7 @@ extern "C" { #if !defined(MBEDTLS_POLY1305_ALT) -typedef struct +typedef struct mbedtls_poly1305_context { uint32_t r[4]; /** The value for 'r' (low 128 bits of the key). */ uint32_t s[4]; /** The value for 's' (high 128 bits of the key). */ @@ -78,14 +84,18 @@ mbedtls_poly1305_context; * \c mbedtls_poly1305_finish(), then finally * \c mbedtls_poly1305_free(). * - * \param ctx The Poly1305 context to initialize. + * \param ctx The Poly1305 context to initialize. This must + * not be \c NULL. */ void mbedtls_poly1305_init( mbedtls_poly1305_context *ctx ); /** - * \brief This function releases and clears the specified Poly1305 context. + * \brief This function releases and clears the specified + * Poly1305 context. * - * \param ctx The Poly1305 context to clear. + * \param ctx The Poly1305 context to clear. This may be \c NULL, in which + * case this function is a no-op. If it is not \c NULL, it must + * point to an initialized Poly1305 context. */ void mbedtls_poly1305_free( mbedtls_poly1305_context *ctx ); @@ -96,11 +106,11 @@ void mbedtls_poly1305_free( mbedtls_poly1305_context *ctx ); * invocation of Poly1305. * * \param ctx The Poly1305 context to which the key should be bound. - * \param key The buffer containing the 256-bit key. + * This must be initialized. + * \param key The buffer containing the \c 32 Byte (\c 256 Bit) key. * * \return \c 0 on success. - * \return #MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA - * if ctx or key are NULL. + * \return A negative error code on failure. */ int mbedtls_poly1305_starts( mbedtls_poly1305_context *ctx, const unsigned char key[32] ); @@ -114,13 +124,14 @@ int mbedtls_poly1305_starts( mbedtls_poly1305_context *ctx, * It can be called repeatedly to process a stream of data. * * \param ctx The Poly1305 context to use for the Poly1305 operation. - * \param ilen The length of the input data (in bytes). Any value is accepted. + * This must be initialized and bound to a key. + * \param ilen The length of the input data in Bytes. + * Any value is accepted. * \param input The buffer holding the input data. - * This pointer can be NULL if ilen == 0. + * This pointer can be \c NULL if `ilen == 0`. * * \return \c 0 on success. - * \return #MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA - * if ctx or input are NULL. + * \return A negative error code on failure. */ int mbedtls_poly1305_update( mbedtls_poly1305_context *ctx, const unsigned char *input, @@ -131,12 +142,12 @@ int mbedtls_poly1305_update( mbedtls_poly1305_context *ctx, * Authentication Code (MAC). * * \param ctx The Poly1305 context to use for the Poly1305 operation. - * \param mac The buffer to where the MAC is written. Must be big enough - * to hold the 16-byte MAC. + * This must be initialized and bound to a key. + * \param mac The buffer to where the MAC is written. This must + * be a writable buffer of length \c 16 Bytes. * * \return \c 0 on success. - * \return #MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA - * if ctx or mac are NULL. + * \return A negative error code on failure. */ int mbedtls_poly1305_finish( mbedtls_poly1305_context *ctx, unsigned char mac[16] ); @@ -148,16 +159,16 @@ int mbedtls_poly1305_finish( mbedtls_poly1305_context *ctx, * \warning The key must be unique and unpredictable for each * invocation of Poly1305. * - * \param key The buffer containing the 256-bit key. - * \param ilen The length of the input data (in bytes). Any value is accepted. + * \param key The buffer containing the \c 32 Byte (\c 256 Bit) key. + * \param ilen The length of the input data in Bytes. + * Any value is accepted. * \param input The buffer holding the input data. - * This pointer can be NULL if ilen == 0. - * \param mac The buffer to where the MAC is written. Must be big enough - * to hold the 16-byte MAC. + * This pointer can be \c NULL if `ilen == 0`. + * \param mac The buffer to where the MAC is written. This must be + * a writable buffer of length \c 16 Bytes. * * \return \c 0 on success. - * \return #MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA - * if key, input, or mac are NULL. + * \return A negative error code on failure. */ int mbedtls_poly1305_mac( const unsigned char key[32], const unsigned char *input, diff --git a/thirdparty/mbedtls/include/mbedtls/ripemd160.h b/thirdparty/mbedtls/include/mbedtls/ripemd160.h index a0dac0c360..c74b7d2c6c 100644 --- a/thirdparty/mbedtls/include/mbedtls/ripemd160.h +++ b/thirdparty/mbedtls/include/mbedtls/ripemd160.h @@ -33,6 +33,8 @@ #include <stddef.h> #include <stdint.h> +/* MBEDTLS_ERR_RIPEMD160_HW_ACCEL_FAILED is deprecated and should not be used. + */ #define MBEDTLS_ERR_RIPEMD160_HW_ACCEL_FAILED -0x0031 /**< RIPEMD160 hardware accelerator failed */ #ifdef __cplusplus @@ -46,7 +48,7 @@ extern "C" { /** * \brief RIPEMD-160 context structure */ -typedef struct +typedef struct mbedtls_ripemd160_context { uint32_t total[2]; /*!< number of bytes processed */ uint32_t state[5]; /*!< intermediate digest state */ diff --git a/thirdparty/mbedtls/include/mbedtls/rsa.h b/thirdparty/mbedtls/include/mbedtls/rsa.h index 19eb2ee74c..ed65a34452 100644 --- a/thirdparty/mbedtls/include/mbedtls/rsa.h +++ b/thirdparty/mbedtls/include/mbedtls/rsa.h @@ -55,7 +55,12 @@ #define MBEDTLS_ERR_RSA_VERIFY_FAILED -0x4380 /**< The PKCS#1 verification failed. */ #define MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE -0x4400 /**< The output buffer for decryption is not large enough. */ #define MBEDTLS_ERR_RSA_RNG_FAILED -0x4480 /**< The random generator failed to generate non-zeros. */ + +/* MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION is deprecated and should not be used. + */ #define MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION -0x4500 /**< The implementation does not offer the requested operation, for example, because of security violations or lack of functionality. */ + +/* MBEDTLS_ERR_RSA_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_RSA_HW_ACCEL_FAILED -0x4580 /**< RSA hardware accelerator failed. */ /* @@ -92,7 +97,7 @@ extern "C" { * is deprecated. All manipulation should instead be done through * the public interface functions. */ -typedef struct +typedef struct mbedtls_rsa_context { int ver; /*!< Always 0.*/ size_t len; /*!< The size of \p N in Bytes. */ @@ -153,15 +158,16 @@ mbedtls_rsa_context; * making signatures, but can be overriden for verifying them. * If set to #MBEDTLS_MD_NONE, it is always overriden. * - * \param ctx The RSA context to initialize. - * \param padding Selects padding mode: #MBEDTLS_RSA_PKCS_V15 or - * #MBEDTLS_RSA_PKCS_V21. - * \param hash_id The hash identifier of #mbedtls_md_type_t type, if - * \p padding is #MBEDTLS_RSA_PKCS_V21. + * \param ctx The RSA context to initialize. This must not be \c NULL. + * \param padding The padding mode to use. This must be either + * #MBEDTLS_RSA_PKCS_V15 or #MBEDTLS_RSA_PKCS_V21. + * \param hash_id The hash identifier of ::mbedtls_md_type_t type, if + * \p padding is #MBEDTLS_RSA_PKCS_V21. It is unused + * otherwise. */ void mbedtls_rsa_init( mbedtls_rsa_context *ctx, int padding, - int hash_id); + int hash_id ); /** * \brief This function imports a set of core parameters into an @@ -183,11 +189,11 @@ void mbedtls_rsa_init( mbedtls_rsa_context *ctx, * for the lifetime of the RSA context being set up. * * \param ctx The initialized RSA context to store the parameters in. - * \param N The RSA modulus, or NULL. - * \param P The first prime factor of \p N, or NULL. - * \param Q The second prime factor of \p N, or NULL. - * \param D The private exponent, or NULL. - * \param E The public exponent, or NULL. + * \param N The RSA modulus. This may be \c NULL. + * \param P The first prime factor of \p N. This may be \c NULL. + * \param Q The second prime factor of \p N. This may be \c NULL. + * \param D The private exponent. This may be \c NULL. + * \param E The public exponent. This may be \c NULL. * * \return \c 0 on success. * \return A non-zero error code on failure. @@ -217,16 +223,16 @@ int mbedtls_rsa_import( mbedtls_rsa_context *ctx, * for the lifetime of the RSA context being set up. * * \param ctx The initialized RSA context to store the parameters in. - * \param N The RSA modulus, or NULL. - * \param N_len The Byte length of \p N, ignored if \p N == NULL. - * \param P The first prime factor of \p N, or NULL. - * \param P_len The Byte length of \p P, ignored if \p P == NULL. - * \param Q The second prime factor of \p N, or NULL. - * \param Q_len The Byte length of \p Q, ignored if \p Q == NULL. - * \param D The private exponent, or NULL. - * \param D_len The Byte length of \p D, ignored if \p D == NULL. - * \param E The public exponent, or NULL. - * \param E_len The Byte length of \p E, ignored if \p E == NULL. + * \param N The RSA modulus. This may be \c NULL. + * \param N_len The Byte length of \p N; it is ignored if \p N == NULL. + * \param P The first prime factor of \p N. This may be \c NULL. + * \param P_len The Byte length of \p P; it ns ignored if \p P == NULL. + * \param Q The second prime factor of \p N. This may be \c NULL. + * \param Q_len The Byte length of \p Q; it is ignored if \p Q == NULL. + * \param D The private exponent. This may be \c NULL. + * \param D_len The Byte length of \p D; it is ignored if \p D == NULL. + * \param E The public exponent. This may be \c NULL. + * \param E_len The Byte length of \p E; it is ignored if \p E == NULL. * * \return \c 0 on success. * \return A non-zero error code on failure. @@ -281,7 +287,7 @@ int mbedtls_rsa_complete( mbedtls_rsa_context *ctx ); * zero Bytes. * * Possible reasons for returning - * #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION:<ul> + * #MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED:<ul> * <li>An alternative RSA implementation is in use, which * stores the key externally, and either cannot or should * not export it into RAM.</li> @@ -294,14 +300,19 @@ int mbedtls_rsa_complete( mbedtls_rsa_context *ctx ); * the RSA context stays intact and remains usable. * * \param ctx The initialized RSA context. - * \param N The MPI to hold the RSA modulus, or NULL. - * \param P The MPI to hold the first prime factor of \p N, or NULL. - * \param Q The MPI to hold the second prime factor of \p N, or NULL. - * \param D The MPI to hold the private exponent, or NULL. - * \param E The MPI to hold the public exponent, or NULL. + * \param N The MPI to hold the RSA modulus. + * This may be \c NULL if this field need not be exported. + * \param P The MPI to hold the first prime factor of \p N. + * This may be \c NULL if this field need not be exported. + * \param Q The MPI to hold the second prime factor of \p N. + * This may be \c NULL if this field need not be exported. + * \param D The MPI to hold the private exponent. + * This may be \c NULL if this field need not be exported. + * \param E The MPI to hold the public exponent. + * This may be \c NULL if this field need not be exported. * * \return \c 0 on success. - * \return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION if exporting the + * \return #MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED if exporting the * requested parameters cannot be done due to missing * functionality or because of security policies. * \return A non-zero return code on any other failure. @@ -321,7 +332,7 @@ int mbedtls_rsa_export( const mbedtls_rsa_context *ctx, * zero Bytes. * * Possible reasons for returning - * #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION:<ul> + * #MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED:<ul> * <li>An alternative RSA implementation is in use, which * stores the key externally, and either cannot or should * not export it into RAM.</li> @@ -336,21 +347,24 @@ int mbedtls_rsa_export( const mbedtls_rsa_context *ctx, * buffer pointers are NULL. * * \param ctx The initialized RSA context. - * \param N The Byte array to store the RSA modulus, or NULL. + * \param N The Byte array to store the RSA modulus, + * or \c NULL if this field need not be exported. * \param N_len The size of the buffer for the modulus. - * \param P The Byte array to hold the first prime factor of \p N, or - * NULL. + * \param P The Byte array to hold the first prime factor of \p N, + * or \c NULL if this field need not be exported. * \param P_len The size of the buffer for the first prime factor. - * \param Q The Byte array to hold the second prime factor of \p N, or - * NULL. + * \param Q The Byte array to hold the second prime factor of \p N, + * or \c NULL if this field need not be exported. * \param Q_len The size of the buffer for the second prime factor. - * \param D The Byte array to hold the private exponent, or NULL. + * \param D The Byte array to hold the private exponent, + * or \c NULL if this field need not be exported. * \param D_len The size of the buffer for the private exponent. - * \param E The Byte array to hold the public exponent, or NULL. + * \param E The Byte array to hold the public exponent, + * or \c NULL if this field need not be exported. * \param E_len The size of the buffer for the public exponent. * * \return \c 0 on success. - * \return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION if exporting the + * \return #MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED if exporting the * requested parameters cannot be done due to missing * functionality or because of security policies. * \return A non-zero return code on any other failure. @@ -370,9 +384,12 @@ int mbedtls_rsa_export_raw( const mbedtls_rsa_context *ctx, * mbedtls_rsa_deduce_opt(). * * \param ctx The initialized RSA context. - * \param DP The MPI to hold D modulo P-1, or NULL. - * \param DQ The MPI to hold D modulo Q-1, or NULL. - * \param QP The MPI to hold modular inverse of Q modulo P, or NULL. + * \param DP The MPI to hold \c D modulo `P-1`, + * or \c NULL if it need not be exported. + * \param DQ The MPI to hold \c D modulo `Q-1`, + * or \c NULL if it need not be exported. + * \param QP The MPI to hold modular inverse of \c Q modulo \c P, + * or \c NULL if it need not be exported. * * \return \c 0 on success. * \return A non-zero error code on failure. @@ -385,13 +402,13 @@ int mbedtls_rsa_export_crt( const mbedtls_rsa_context *ctx, * \brief This function sets padding for an already initialized RSA * context. See mbedtls_rsa_init() for details. * - * \param ctx The RSA context to be set. - * \param padding Selects padding mode: #MBEDTLS_RSA_PKCS_V15 or - * #MBEDTLS_RSA_PKCS_V21. + * \param ctx The initialized RSA context to be configured. + * \param padding The padding mode to use. This must be either + * #MBEDTLS_RSA_PKCS_V15 or #MBEDTLS_RSA_PKCS_V21. * \param hash_id The #MBEDTLS_RSA_PKCS_V21 hash identifier. */ void mbedtls_rsa_set_padding( mbedtls_rsa_context *ctx, int padding, - int hash_id); + int hash_id ); /** * \brief This function retrieves the length of RSA modulus in Bytes. @@ -409,11 +426,14 @@ size_t mbedtls_rsa_get_len( const mbedtls_rsa_context *ctx ); * \note mbedtls_rsa_init() must be called before this function, * to set up the RSA context. * - * \param ctx The RSA context used to hold the key. - * \param f_rng The RNG function. - * \param p_rng The RNG context. + * \param ctx The initialized RSA context used to hold the key. + * \param f_rng The RNG function to be used for key generation. + * This must not be \c NULL. + * \param p_rng The RNG context to be passed to \p f_rng. + * This may be \c NULL if \p f_rng doesn't need a context. * \param nbits The size of the public key in bits. - * \param exponent The public exponent. For example, 65537. + * \param exponent The public exponent to use. For example, \c 65537. + * This must be odd and greater than \c 1. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -431,7 +451,7 @@ int mbedtls_rsa_gen_key( mbedtls_rsa_context *ctx, * enough information is present to perform an RSA public key * operation using mbedtls_rsa_public(). * - * \param ctx The RSA context to check. + * \param ctx The initialized RSA context to check. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -470,7 +490,7 @@ int mbedtls_rsa_check_pubkey( const mbedtls_rsa_context *ctx ); * parameters, which goes beyond what is effectively checkable * by the library.</li></ul> * - * \param ctx The RSA context to check. + * \param ctx The initialized RSA context to check. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -482,8 +502,8 @@ int mbedtls_rsa_check_privkey( const mbedtls_rsa_context *ctx ); * * It checks each of the contexts, and makes sure they match. * - * \param pub The RSA context holding the public key. - * \param prv The RSA context holding the private key. + * \param pub The initialized RSA context holding the public key. + * \param prv The initialized RSA context holding the private key. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -494,18 +514,19 @@ int mbedtls_rsa_check_pub_priv( const mbedtls_rsa_context *pub, /** * \brief This function performs an RSA public key operation. * + * \param ctx The initialized RSA context to use. + * \param input The input buffer. This must be a readable buffer + * of length \c ctx->len Bytes. For example, \c 256 Bytes + * for an 2048-bit RSA modulus. + * \param output The output buffer. This must be a writable buffer + * of length \c ctx->len Bytes. For example, \c 256 Bytes + * for an 2048-bit RSA modulus. + * * \note This function does not handle message padding. * * \note Make sure to set \p input[0] = 0 or ensure that * input is smaller than \p N. * - * \note The input and output buffers must be large - * enough. For example, 128 Bytes if RSA-1024 is used. - * - * \param ctx The RSA context. - * \param input The input buffer. - * \param output The output buffer. - * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. */ @@ -516,9 +537,6 @@ int mbedtls_rsa_public( mbedtls_rsa_context *ctx, /** * \brief This function performs an RSA private key operation. * - * \note The input and output buffers must be large - * enough. For example, 128 Bytes if RSA-1024 is used. - * * \note Blinding is used if and only if a PRNG is provided. * * \note If blinding is used, both the base of exponentation @@ -530,11 +548,18 @@ int mbedtls_rsa_public( mbedtls_rsa_context *ctx, * Future versions of the library may enforce the presence * of a PRNG. * - * \param ctx The RSA context. - * \param f_rng The RNG function. Needed for blinding. - * \param p_rng The RNG context. - * \param input The input buffer. - * \param output The output buffer. + * \param ctx The initialized RSA context to use. + * \param f_rng The RNG function, used for blinding. It is discouraged + * and deprecated to pass \c NULL here, in which case + * blinding will be omitted. + * \param p_rng The RNG context to pass to \p f_rng. This may be \c NULL + * if \p f_rng is \c NULL or if \p f_rng doesn't need a context. + * \param input The input buffer. This must be a readable buffer + * of length \c ctx->len Bytes. For example, \c 256 Bytes + * for an 2048-bit RSA modulus. + * \param output The output buffer. This must be a writable buffer + * of length \c ctx->len Bytes. For example, \c 256 Bytes + * for an 2048-bit RSA modulus. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -553,9 +578,6 @@ int mbedtls_rsa_private( mbedtls_rsa_context *ctx, * It is the generic wrapper for performing a PKCS#1 encryption * operation using the \p mode from the context. * - * \note The input and output buffers must be as large as the size - * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used. - * * \deprecated It is deprecated and discouraged to call this function * in #MBEDTLS_RSA_PRIVATE mode. Future versions of the library * are likely to remove the \p mode argument and have it @@ -563,16 +585,26 @@ int mbedtls_rsa_private( mbedtls_rsa_context *ctx, * * \note Alternative implementations of RSA need not support * mode being set to #MBEDTLS_RSA_PRIVATE and might instead - * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION. - * - * \param ctx The RSA context. - * \param f_rng The RNG function. Needed for padding, PKCS#1 v2.1 - * encoding, and #MBEDTLS_RSA_PRIVATE. - * \param p_rng The RNG context. - * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE. - * \param ilen The length of the plaintext. - * \param input The buffer holding the data to encrypt. - * \param output The buffer used to hold the ciphertext. + * return #MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED. + * + * \param ctx The initialized RSA context to use. + * \param f_rng The RNG to use. It is mandatory for PKCS#1 v2.1 padding + * encoding, and for PKCS#1 v1.5 padding encoding when used + * with \p mode set to #MBEDTLS_RSA_PUBLIC. For PKCS#1 v1.5 + * padding encoding and \p mode set to #MBEDTLS_RSA_PRIVATE, + * it is used for blinding and should be provided in this + * case; see mbedtls_rsa_private() for more. + * \param p_rng The RNG context to be passed to \p f_rng. May be + * \c NULL if \p f_rng is \c NULL or if \p f_rng doesn't + * need a context argument. + * \param mode The mode of operation. This must be either + * #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE (deprecated). + * \param ilen The length of the plaintext in Bytes. + * \param input The input data to encrypt. This must be a readable + * buffer of size \p ilen Bytes. This must not be \c NULL. + * \param output The output buffer. This must be a writable buffer + * of length \c ctx->len Bytes. For example, \c 256 Bytes + * for an 2048-bit RSA modulus. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -588,9 +620,6 @@ int mbedtls_rsa_pkcs1_encrypt( mbedtls_rsa_context *ctx, * \brief This function performs a PKCS#1 v1.5 encryption operation * (RSAES-PKCS1-v1_5-ENCRYPT). * - * \note The output buffer must be as large as the size - * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used. - * * \deprecated It is deprecated and discouraged to call this function * in #MBEDTLS_RSA_PRIVATE mode. Future versions of the library * are likely to remove the \p mode argument and have it @@ -598,16 +627,24 @@ int mbedtls_rsa_pkcs1_encrypt( mbedtls_rsa_context *ctx, * * \note Alternative implementations of RSA need not support * mode being set to #MBEDTLS_RSA_PRIVATE and might instead - * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION. - * - * \param ctx The RSA context. - * \param f_rng The RNG function. Needed for padding and - * #MBEDTLS_RSA_PRIVATE. - * \param p_rng The RNG context. - * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE. - * \param ilen The length of the plaintext. - * \param input The buffer holding the data to encrypt. - * \param output The buffer used to hold the ciphertext. + * return #MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED. + * + * \param ctx The initialized RSA context to use. + * \param f_rng The RNG function to use. It is needed for padding generation + * if \p mode is #MBEDTLS_RSA_PUBLIC. If \p mode is + * #MBEDTLS_RSA_PRIVATE (discouraged), it is used for + * blinding and should be provided; see mbedtls_rsa_private(). + * \param p_rng The RNG context to be passed to \p f_rng. This may + * be \c NULL if \p f_rng is \c NULL or if \p f_rng + * doesn't need a context argument. + * \param mode The mode of operation. This must be either + * #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE (deprecated). + * \param ilen The length of the plaintext in Bytes. + * \param input The input data to encrypt. This must be a readable + * buffer of size \p ilen Bytes. This must not be \c NULL. + * \param output The output buffer. This must be a writable buffer + * of length \c ctx->len Bytes. For example, \c 256 Bytes + * for an 2048-bit RSA modulus. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -633,18 +670,25 @@ int mbedtls_rsa_rsaes_pkcs1_v15_encrypt( mbedtls_rsa_context *ctx, * * \note Alternative implementations of RSA need not support * mode being set to #MBEDTLS_RSA_PRIVATE and might instead - * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION. - * - * \param ctx The RSA context. - * \param f_rng The RNG function. Needed for padding and PKCS#1 v2.1 - * encoding and #MBEDTLS_RSA_PRIVATE. - * \param p_rng The RNG context. - * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE. + * return #MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED. + * + * \param ctx The initnialized RSA context to use. + * \param f_rng The RNG function to use. This is needed for padding + * generation and must be provided. + * \param p_rng The RNG context to be passed to \p f_rng. This may + * be \c NULL if \p f_rng doesn't need a context argument. + * \param mode The mode of operation. This must be either + * #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE (deprecated). * \param label The buffer holding the custom label to use. - * \param label_len The length of the label. - * \param ilen The length of the plaintext. - * \param input The buffer holding the data to encrypt. - * \param output The buffer used to hold the ciphertext. + * This must be a readable buffer of length \p label_len + * Bytes. It may be \c NULL if \p label_len is \c 0. + * \param label_len The length of the label in Bytes. + * \param ilen The length of the plaintext buffer \p input in Bytes. + * \param input The input data to encrypt. This must be a readable + * buffer of size \p ilen Bytes. This must not be \c NULL. + * \param output The output buffer. This must be a writable buffer + * of length \c ctx->len Bytes. For example, \c 256 Bytes + * for an 2048-bit RSA modulus. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -672,9 +716,6 @@ int mbedtls_rsa_rsaes_oaep_encrypt( mbedtls_rsa_context *ctx, * hold the decryption of the particular ciphertext provided, * the function returns \c MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE. * - * \note The input buffer must be as large as the size - * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used. - * * \deprecated It is deprecated and discouraged to call this function * in #MBEDTLS_RSA_PUBLIC mode. Future versions of the library * are likely to remove the \p mode argument and have it @@ -682,16 +723,25 @@ int mbedtls_rsa_rsaes_oaep_encrypt( mbedtls_rsa_context *ctx, * * \note Alternative implementations of RSA need not support * mode being set to #MBEDTLS_RSA_PUBLIC and might instead - * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION. - * - * \param ctx The RSA context. - * \param f_rng The RNG function. Only needed for #MBEDTLS_RSA_PRIVATE. - * \param p_rng The RNG context. - * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE. - * \param olen The length of the plaintext. - * \param input The buffer holding the encrypted data. - * \param output The buffer used to hold the plaintext. - * \param output_max_len The maximum length of the output buffer. + * return #MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED. + * + * \param ctx The initialized RSA context to use. + * \param f_rng The RNG function. If \p mode is #MBEDTLS_RSA_PRIVATE, + * this is used for blinding and should be provided; see + * mbedtls_rsa_private() for more. If \p mode is + * #MBEDTLS_RSA_PUBLIC, it is ignored. + * \param p_rng The RNG context to be passed to \p f_rng. This may be + * \c NULL if \p f_rng is \c NULL or doesn't need a context. + * \param mode The mode of operation. This must be either + * #MBEDTLS_RSA_PRIVATE or #MBEDTLS_RSA_PUBLIC (deprecated). + * \param olen The address at which to store the length of + * the plaintext. This must not be \c NULL. + * \param input The ciphertext buffer. This must be a readable buffer + * of length \c ctx->len Bytes. For example, \c 256 Bytes + * for an 2048-bit RSA modulus. + * \param output The buffer used to hold the plaintext. This must + * be a writable buffer of length \p output_max_len Bytes. + * \param output_max_len The length in Bytes of the output buffer \p output. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -715,9 +765,6 @@ int mbedtls_rsa_pkcs1_decrypt( mbedtls_rsa_context *ctx, * hold the decryption of the particular ciphertext provided, * the function returns #MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE. * - * \note The input buffer must be as large as the size - * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used. - * * \deprecated It is deprecated and discouraged to call this function * in #MBEDTLS_RSA_PUBLIC mode. Future versions of the library * are likely to remove the \p mode argument and have it @@ -725,16 +772,25 @@ int mbedtls_rsa_pkcs1_decrypt( mbedtls_rsa_context *ctx, * * \note Alternative implementations of RSA need not support * mode being set to #MBEDTLS_RSA_PUBLIC and might instead - * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION. - * - * \param ctx The RSA context. - * \param f_rng The RNG function. Only needed for #MBEDTLS_RSA_PRIVATE. - * \param p_rng The RNG context. - * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE. - * \param olen The length of the plaintext. - * \param input The buffer holding the encrypted data. - * \param output The buffer to hold the plaintext. - * \param output_max_len The maximum length of the output buffer. + * return #MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED. + * + * \param ctx The initialized RSA context to use. + * \param f_rng The RNG function. If \p mode is #MBEDTLS_RSA_PRIVATE, + * this is used for blinding and should be provided; see + * mbedtls_rsa_private() for more. If \p mode is + * #MBEDTLS_RSA_PUBLIC, it is ignored. + * \param p_rng The RNG context to be passed to \p f_rng. This may be + * \c NULL if \p f_rng is \c NULL or doesn't need a context. + * \param mode The mode of operation. This must be either + * #MBEDTLS_RSA_PRIVATE or #MBEDTLS_RSA_PUBLIC (deprecated). + * \param olen The address at which to store the length of + * the plaintext. This must not be \c NULL. + * \param input The ciphertext buffer. This must be a readable buffer + * of length \c ctx->len Bytes. For example, \c 256 Bytes + * for an 2048-bit RSA modulus. + * \param output The buffer used to hold the plaintext. This must + * be a writable buffer of length \p output_max_len Bytes. + * \param output_max_len The length in Bytes of the output buffer \p output. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -760,9 +816,6 @@ int mbedtls_rsa_rsaes_pkcs1_v15_decrypt( mbedtls_rsa_context *ctx, * ciphertext provided, the function returns * #MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE. * - * \note The input buffer must be as large as the size - * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used. - * * \deprecated It is deprecated and discouraged to call this function * in #MBEDTLS_RSA_PUBLIC mode. Future versions of the library * are likely to remove the \p mode argument and have it @@ -770,18 +823,29 @@ int mbedtls_rsa_rsaes_pkcs1_v15_decrypt( mbedtls_rsa_context *ctx, * * \note Alternative implementations of RSA need not support * mode being set to #MBEDTLS_RSA_PUBLIC and might instead - * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION. - * - * \param ctx The RSA context. - * \param f_rng The RNG function. Only needed for #MBEDTLS_RSA_PRIVATE. - * \param p_rng The RNG context. - * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE. + * return #MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED. + * + * \param ctx The initialized RSA context to use. + * \param f_rng The RNG function. If \p mode is #MBEDTLS_RSA_PRIVATE, + * this is used for blinding and should be provided; see + * mbedtls_rsa_private() for more. If \p mode is + * #MBEDTLS_RSA_PUBLIC, it is ignored. + * \param p_rng The RNG context to be passed to \p f_rng. This may be + * \c NULL if \p f_rng is \c NULL or doesn't need a context. + * \param mode The mode of operation. This must be either + * #MBEDTLS_RSA_PRIVATE or #MBEDTLS_RSA_PUBLIC (deprecated). * \param label The buffer holding the custom label to use. - * \param label_len The length of the label. - * \param olen The length of the plaintext. - * \param input The buffer holding the encrypted data. - * \param output The buffer to hold the plaintext. - * \param output_max_len The maximum length of the output buffer. + * This must be a readable buffer of length \p label_len + * Bytes. It may be \c NULL if \p label_len is \c 0. + * \param label_len The length of the label in Bytes. + * \param olen The address at which to store the length of + * the plaintext. This must not be \c NULL. + * \param input The ciphertext buffer. This must be a readable buffer + * of length \c ctx->len Bytes. For example, \c 256 Bytes + * for an 2048-bit RSA modulus. + * \param output The buffer used to hold the plaintext. This must + * be a writable buffer of length \p output_max_len Bytes. + * \param output_max_len The length in Bytes of the output buffer \p output. * * \return \c 0 on success. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -817,18 +881,30 @@ int mbedtls_rsa_rsaes_oaep_decrypt( mbedtls_rsa_context *ctx, * * \note Alternative implementations of RSA need not support * mode being set to #MBEDTLS_RSA_PUBLIC and might instead - * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION. - * - * \param ctx The RSA context. - * \param f_rng The RNG function. Needed for PKCS#1 v2.1 encoding and for - * #MBEDTLS_RSA_PRIVATE. - * \param p_rng The RNG context. - * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE. + * return #MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED. + * + * \param ctx The initialized RSA context to use. + * \param f_rng The RNG function to use. If the padding mode is PKCS#1 v2.1, + * this must be provided. If the padding mode is PKCS#1 v1.5 and + * \p mode is #MBEDTLS_RSA_PRIVATE, it is used for blinding + * and should be provided; see mbedtls_rsa_private() for more + * more. It is ignored otherwise. + * \param p_rng The RNG context to be passed to \p f_rng. This may be \c NULL + * if \p f_rng is \c NULL or doesn't need a context argument. + * \param mode The mode of operation. This must be either + * #MBEDTLS_RSA_PRIVATE or #MBEDTLS_RSA_PUBLIC (deprecated). * \param md_alg The message-digest algorithm used to hash the original data. * Use #MBEDTLS_MD_NONE for signing raw data. - * \param hashlen The length of the message digest. Only used if \p md_alg is #MBEDTLS_MD_NONE. - * \param hash The buffer holding the message digest. - * \param sig The buffer to hold the ciphertext. + * \param hashlen The length of the message digest. + * Ths is only used if \p md_alg is #MBEDTLS_MD_NONE. + * \param hash The buffer holding the message digest or raw data. + * If \p md_alg is #MBEDTLS_MD_NONE, this must be a readable + * buffer of length \p hashlen Bytes. If \p md_alg is not + * #MBEDTLS_MD_NONE, it must be a readable buffer of length + * the size of the hash corresponding to \p md_alg. + * \param sig The buffer to hold the signature. This must be a writable + * buffer of length \c ctx->len Bytes. For example, \c 256 Bytes + * for an 2048-bit RSA modulus. * * \return \c 0 if the signing operation was successful. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -846,9 +922,6 @@ int mbedtls_rsa_pkcs1_sign( mbedtls_rsa_context *ctx, * \brief This function performs a PKCS#1 v1.5 signature * operation (RSASSA-PKCS1-v1_5-SIGN). * - * \note The \p sig buffer must be as large as the size - * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used. - * * \deprecated It is deprecated and discouraged to call this function * in #MBEDTLS_RSA_PUBLIC mode. Future versions of the library * are likely to remove the \p mode argument and have it @@ -856,17 +929,29 @@ int mbedtls_rsa_pkcs1_sign( mbedtls_rsa_context *ctx, * * \note Alternative implementations of RSA need not support * mode being set to #MBEDTLS_RSA_PUBLIC and might instead - * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION. - * - * \param ctx The RSA context. - * \param f_rng The RNG function. Only needed for #MBEDTLS_RSA_PRIVATE. - * \param p_rng The RNG context. - * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE. + * return #MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED. + * + * \param ctx The initialized RSA context to use. + * \param f_rng The RNG function. If \p mode is #MBEDTLS_RSA_PRIVATE, + * this is used for blinding and should be provided; see + * mbedtls_rsa_private() for more. If \p mode is + * #MBEDTLS_RSA_PUBLIC, it is ignored. + * \param p_rng The RNG context to be passed to \p f_rng. This may be \c NULL + * if \p f_rng is \c NULL or doesn't need a context argument. + * \param mode The mode of operation. This must be either + * #MBEDTLS_RSA_PRIVATE or #MBEDTLS_RSA_PUBLIC (deprecated). * \param md_alg The message-digest algorithm used to hash the original data. * Use #MBEDTLS_MD_NONE for signing raw data. - * \param hashlen The length of the message digest. Only used if \p md_alg is #MBEDTLS_MD_NONE. - * \param hash The buffer holding the message digest. - * \param sig The buffer to hold the ciphertext. + * \param hashlen The length of the message digest. + * Ths is only used if \p md_alg is #MBEDTLS_MD_NONE. + * \param hash The buffer holding the message digest or raw data. + * If \p md_alg is #MBEDTLS_MD_NONE, this must be a readable + * buffer of length \p hashlen Bytes. If \p md_alg is not + * #MBEDTLS_MD_NONE, it must be a readable buffer of length + * the size of the hash corresponding to \p md_alg. + * \param sig The buffer to hold the signature. This must be a writable + * buffer of length \c ctx->len Bytes. For example, \c 256 Bytes + * for an 2048-bit RSA modulus. * * \return \c 0 if the signing operation was successful. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -884,9 +969,6 @@ int mbedtls_rsa_rsassa_pkcs1_v15_sign( mbedtls_rsa_context *ctx, * \brief This function performs a PKCS#1 v2.1 PSS signature * operation (RSASSA-PSS-SIGN). * - * \note The \p sig buffer must be as large as the size - * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used. - * * \note The \p hash_id in the RSA context is the one used for the * encoding. \p md_alg in the function call is the type of hash * that is encoded. According to <em>RFC-3447: Public-Key @@ -894,6 +976,16 @@ int mbedtls_rsa_rsassa_pkcs1_v15_sign( mbedtls_rsa_context *ctx, * Specifications</em> it is advised to keep both hashes the * same. * + * \note This function always uses the maximum possible salt size, + * up to the length of the payload hash. This choice of salt + * size complies with FIPS 186-4 §5.5 (e) and RFC 8017 (PKCS#1 + * v2.2) §9.1.1 step 3. Furthermore this function enforces a + * minimum salt size which is the hash size minus 2 bytes. If + * this minimum size is too large given the key size (the salt + * size, plus the hash size, plus 2 bytes must be no more than + * the key size in bytes), this function returns + * #MBEDTLS_ERR_RSA_BAD_INPUT_DATA. + * * \deprecated It is deprecated and discouraged to call this function * in #MBEDTLS_RSA_PUBLIC mode. Future versions of the library * are likely to remove the \p mode argument and have it @@ -901,18 +993,26 @@ int mbedtls_rsa_rsassa_pkcs1_v15_sign( mbedtls_rsa_context *ctx, * * \note Alternative implementations of RSA need not support * mode being set to #MBEDTLS_RSA_PUBLIC and might instead - * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION. - * - * \param ctx The RSA context. - * \param f_rng The RNG function. Needed for PKCS#1 v2.1 encoding and for - * #MBEDTLS_RSA_PRIVATE. - * \param p_rng The RNG context. - * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE. + * return #MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED. + * + * \param ctx The initialized RSA context to use. + * \param f_rng The RNG function. It must not be \c NULL. + * \param p_rng The RNG context to be passed to \p f_rng. This may be \c NULL + * if \p f_rng doesn't need a context argument. + * \param mode The mode of operation. This must be either + * #MBEDTLS_RSA_PRIVATE or #MBEDTLS_RSA_PUBLIC (deprecated). * \param md_alg The message-digest algorithm used to hash the original data. * Use #MBEDTLS_MD_NONE for signing raw data. - * \param hashlen The length of the message digest. Only used if \p md_alg is #MBEDTLS_MD_NONE. - * \param hash The buffer holding the message digest. - * \param sig The buffer to hold the ciphertext. + * \param hashlen The length of the message digest. + * Ths is only used if \p md_alg is #MBEDTLS_MD_NONE. + * \param hash The buffer holding the message digest or raw data. + * If \p md_alg is #MBEDTLS_MD_NONE, this must be a readable + * buffer of length \p hashlen Bytes. If \p md_alg is not + * #MBEDTLS_MD_NONE, it must be a readable buffer of length + * the size of the hash corresponding to \p md_alg. + * \param sig The buffer to hold the signature. This must be a writable + * buffer of length \c ctx->len Bytes. For example, \c 256 Bytes + * for an 2048-bit RSA modulus. * * \return \c 0 if the signing operation was successful. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -933,9 +1033,6 @@ int mbedtls_rsa_rsassa_pss_sign( mbedtls_rsa_context *ctx, * This is the generic wrapper for performing a PKCS#1 * verification using the mode from the context. * - * \note The \p sig buffer must be as large as the size - * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used. - * * \note For PKCS#1 v2.1 encoding, see comments on * mbedtls_rsa_rsassa_pss_verify() about \p md_alg and * \p hash_id. @@ -947,17 +1044,28 @@ int mbedtls_rsa_rsassa_pss_sign( mbedtls_rsa_context *ctx, * * \note Alternative implementations of RSA need not support * mode being set to #MBEDTLS_RSA_PRIVATE and might instead - * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION. - * - * \param ctx The RSA public key context. - * \param f_rng The RNG function. Only needed for #MBEDTLS_RSA_PRIVATE. - * \param p_rng The RNG context. - * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE. + * return #MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED. + * + * \param ctx The initialized RSA public key context to use. + * \param f_rng The RNG function to use. If \p mode is #MBEDTLS_RSA_PRIVATE, + * this is used for blinding and should be provided; see + * mbedtls_rsa_private() for more. Otherwise, it is ignored. + * \param p_rng The RNG context to be passed to \p f_rng. This may be + * \c NULL if \p f_rng is \c NULL or doesn't need a context. + * \param mode The mode of operation. This must be either + * #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE (deprecated). * \param md_alg The message-digest algorithm used to hash the original data. * Use #MBEDTLS_MD_NONE for signing raw data. - * \param hashlen The length of the message digest. Only used if \p md_alg is #MBEDTLS_MD_NONE. - * \param hash The buffer holding the message digest. - * \param sig The buffer holding the ciphertext. + * \param hashlen The length of the message digest. + * This is only used if \p md_alg is #MBEDTLS_MD_NONE. + * \param hash The buffer holding the message digest or raw data. + * If \p md_alg is #MBEDTLS_MD_NONE, this must be a readable + * buffer of length \p hashlen Bytes. If \p md_alg is not + * #MBEDTLS_MD_NONE, it must be a readable buffer of length + * the size of the hash corresponding to \p md_alg. + * \param sig The buffer holding the signature. This must be a readable + * buffer of length \c ctx->len Bytes. For example, \c 256 Bytes + * for an 2048-bit RSA modulus. * * \return \c 0 if the verify operation was successful. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -975,9 +1083,6 @@ int mbedtls_rsa_pkcs1_verify( mbedtls_rsa_context *ctx, * \brief This function performs a PKCS#1 v1.5 verification * operation (RSASSA-PKCS1-v1_5-VERIFY). * - * \note The \p sig buffer must be as large as the size - * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used. - * * \deprecated It is deprecated and discouraged to call this function * in #MBEDTLS_RSA_PRIVATE mode. Future versions of the library * are likely to remove the \p mode argument and have it @@ -985,17 +1090,28 @@ int mbedtls_rsa_pkcs1_verify( mbedtls_rsa_context *ctx, * * \note Alternative implementations of RSA need not support * mode being set to #MBEDTLS_RSA_PRIVATE and might instead - * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION. - * - * \param ctx The RSA public key context. - * \param f_rng The RNG function. Only needed for #MBEDTLS_RSA_PRIVATE. - * \param p_rng The RNG context. - * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE. + * return #MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED. + * + * \param ctx The initialized RSA public key context to use. + * \param f_rng The RNG function to use. If \p mode is #MBEDTLS_RSA_PRIVATE, + * this is used for blinding and should be provided; see + * mbedtls_rsa_private() for more. Otherwise, it is ignored. + * \param p_rng The RNG context to be passed to \p f_rng. This may be + * \c NULL if \p f_rng is \c NULL or doesn't need a context. + * \param mode The mode of operation. This must be either + * #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE (deprecated). * \param md_alg The message-digest algorithm used to hash the original data. * Use #MBEDTLS_MD_NONE for signing raw data. - * \param hashlen The length of the message digest. Only used if \p md_alg is #MBEDTLS_MD_NONE. - * \param hash The buffer holding the message digest. - * \param sig The buffer holding the ciphertext. + * \param hashlen The length of the message digest. + * This is only used if \p md_alg is #MBEDTLS_MD_NONE. + * \param hash The buffer holding the message digest or raw data. + * If \p md_alg is #MBEDTLS_MD_NONE, this must be a readable + * buffer of length \p hashlen Bytes. If \p md_alg is not + * #MBEDTLS_MD_NONE, it must be a readable buffer of length + * the size of the hash corresponding to \p md_alg. + * \param sig The buffer holding the signature. This must be a readable + * buffer of length \c ctx->len Bytes. For example, \c 256 Bytes + * for an 2048-bit RSA modulus. * * \return \c 0 if the verify operation was successful. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -1016,9 +1132,6 @@ int mbedtls_rsa_rsassa_pkcs1_v15_verify( mbedtls_rsa_context *ctx, * The hash function for the MGF mask generating function * is that specified in the RSA context. * - * \note The \p sig buffer must be as large as the size - * of \p ctx->N. For example, 128 Bytes if RSA-1024 is used. - * * \note The \p hash_id in the RSA context is the one used for the * verification. \p md_alg in the function call is the type of * hash that is verified. According to <em>RFC-3447: Public-Key @@ -1034,17 +1147,28 @@ int mbedtls_rsa_rsassa_pkcs1_v15_verify( mbedtls_rsa_context *ctx, * * \note Alternative implementations of RSA need not support * mode being set to #MBEDTLS_RSA_PRIVATE and might instead - * return #MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION. - * - * \param ctx The RSA public key context. - * \param f_rng The RNG function. Only needed for #MBEDTLS_RSA_PRIVATE. - * \param p_rng The RNG context. - * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE. + * return #MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED. + * + * \param ctx The initialized RSA public key context to use. + * \param f_rng The RNG function to use. If \p mode is #MBEDTLS_RSA_PRIVATE, + * this is used for blinding and should be provided; see + * mbedtls_rsa_private() for more. Otherwise, it is ignored. + * \param p_rng The RNG context to be passed to \p f_rng. This may be + * \c NULL if \p f_rng is \c NULL or doesn't need a context. + * \param mode The mode of operation. This must be either + * #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE (deprecated). * \param md_alg The message-digest algorithm used to hash the original data. * Use #MBEDTLS_MD_NONE for signing raw data. - * \param hashlen The length of the message digest. Only used if \p md_alg is #MBEDTLS_MD_NONE. - * \param hash The buffer holding the message digest. - * \param sig The buffer holding the ciphertext. + * \param hashlen The length of the message digest. + * This is only used if \p md_alg is #MBEDTLS_MD_NONE. + * \param hash The buffer holding the message digest or raw data. + * If \p md_alg is #MBEDTLS_MD_NONE, this must be a readable + * buffer of length \p hashlen Bytes. If \p md_alg is not + * #MBEDTLS_MD_NONE, it must be a readable buffer of length + * the size of the hash corresponding to \p md_alg. + * \param sig The buffer holding the signature. This must be a readable + * buffer of length \c ctx->len Bytes. For example, \c 256 Bytes + * for an 2048-bit RSA modulus. * * \return \c 0 if the verify operation was successful. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -1070,19 +1194,29 @@ int mbedtls_rsa_rsassa_pss_verify( mbedtls_rsa_context *ctx, * * \note The \p hash_id in the RSA context is ignored. * - * \param ctx The RSA public key context. - * \param f_rng The RNG function. Only needed for #MBEDTLS_RSA_PRIVATE. - * \param p_rng The RNG context. - * \param mode #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE. + * \param ctx The initialized RSA public key context to use. + * \param f_rng The RNG function to use. If \p mode is #MBEDTLS_RSA_PRIVATE, + * this is used for blinding and should be provided; see + * mbedtls_rsa_private() for more. Otherwise, it is ignored. + * \param p_rng The RNG context to be passed to \p f_rng. This may be + * \c NULL if \p f_rng is \c NULL or doesn't need a context. + * \param mode The mode of operation. This must be either + * #MBEDTLS_RSA_PUBLIC or #MBEDTLS_RSA_PRIVATE. * \param md_alg The message-digest algorithm used to hash the original data. * Use #MBEDTLS_MD_NONE for signing raw data. - * \param hashlen The length of the message digest. Only used if \p md_alg is - * #MBEDTLS_MD_NONE. - * \param hash The buffer holding the message digest. - * \param mgf1_hash_id The message digest used for mask generation. - * \param expected_salt_len The length of the salt used in padding. Use - * #MBEDTLS_RSA_SALT_LEN_ANY to accept any salt length. - * \param sig The buffer holding the ciphertext. + * \param hashlen The length of the message digest. + * This is only used if \p md_alg is #MBEDTLS_MD_NONE. + * \param hash The buffer holding the message digest or raw data. + * If \p md_alg is #MBEDTLS_MD_NONE, this must be a readable + * buffer of length \p hashlen Bytes. If \p md_alg is not + * #MBEDTLS_MD_NONE, it must be a readable buffer of length + * the size of the hash corresponding to \p md_alg. + * \param mgf1_hash_id The message digest used for mask generation. + * \param expected_salt_len The length of the salt used in padding. Use + * #MBEDTLS_RSA_SALT_LEN_ANY to accept any salt length. + * \param sig The buffer holding the signature. This must be a readable + * buffer of length \c ctx->len Bytes. For example, \c 256 Bytes + * for an 2048-bit RSA modulus. * * \return \c 0 if the verify operation was successful. * \return An \c MBEDTLS_ERR_RSA_XXX error code on failure. @@ -1101,8 +1235,8 @@ int mbedtls_rsa_rsassa_pss_verify_ext( mbedtls_rsa_context *ctx, /** * \brief This function copies the components of an RSA context. * - * \param dst The destination context. - * \param src The source context. + * \param dst The destination context. This must be initialized. + * \param src The source context. This must be initialized. * * \return \c 0 on success. * \return #MBEDTLS_ERR_MPI_ALLOC_FAILED on memory allocation failure. @@ -1112,7 +1246,9 @@ int mbedtls_rsa_copy( mbedtls_rsa_context *dst, const mbedtls_rsa_context *src ) /** * \brief This function frees the components of an RSA key. * - * \param ctx The RSA Context to free. + * \param ctx The RSA context to free. May be \c NULL, in which case + * this function is a no-op. If it is not \c NULL, it must + * point to an initialized RSA context. */ void mbedtls_rsa_free( mbedtls_rsa_context *ctx ); diff --git a/thirdparty/mbedtls/include/mbedtls/sha1.h b/thirdparty/mbedtls/include/mbedtls/sha1.h index 65a124c94b..38ea10b137 100644 --- a/thirdparty/mbedtls/include/mbedtls/sha1.h +++ b/thirdparty/mbedtls/include/mbedtls/sha1.h @@ -40,7 +40,9 @@ #include <stddef.h> #include <stdint.h> +/* MBEDTLS_ERR_SHA1_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_SHA1_HW_ACCEL_FAILED -0x0035 /**< SHA-1 hardware accelerator failed */ +#define MBEDTLS_ERR_SHA1_BAD_INPUT_DATA -0x0073 /**< SHA-1 input data was malformed. */ #ifdef __cplusplus extern "C" { @@ -58,7 +60,7 @@ extern "C" { * stronger message digests instead. * */ -typedef struct +typedef struct mbedtls_sha1_context { uint32_t total[2]; /*!< The number of Bytes processed. */ uint32_t state[5]; /*!< The intermediate digest state. */ @@ -78,6 +80,7 @@ mbedtls_sha1_context; * stronger message digests instead. * * \param ctx The SHA-1 context to initialize. + * This must not be \c NULL. * */ void mbedtls_sha1_init( mbedtls_sha1_context *ctx ); @@ -89,7 +92,10 @@ void mbedtls_sha1_init( mbedtls_sha1_context *ctx ); * constitutes a security risk. We recommend considering * stronger message digests instead. * - * \param ctx The SHA-1 context to clear. + * \param ctx The SHA-1 context to clear. This may be \c NULL, + * in which case this function does nothing. If it is + * not \c NULL, it must point to an initialized + * SHA-1 context. * */ void mbedtls_sha1_free( mbedtls_sha1_context *ctx ); @@ -101,8 +107,8 @@ void mbedtls_sha1_free( mbedtls_sha1_context *ctx ); * constitutes a security risk. We recommend considering * stronger message digests instead. * - * \param dst The SHA-1 context to clone to. - * \param src The SHA-1 context to clone from. + * \param dst The SHA-1 context to clone to. This must be initialized. + * \param src The SHA-1 context to clone from. This must be initialized. * */ void mbedtls_sha1_clone( mbedtls_sha1_context *dst, @@ -115,9 +121,10 @@ void mbedtls_sha1_clone( mbedtls_sha1_context *dst, * constitutes a security risk. We recommend considering * stronger message digests instead. * - * \param ctx The SHA-1 context to initialize. + * \param ctx The SHA-1 context to initialize. This must be initialized. * * \return \c 0 on success. + * \return A negative error code on failure. * */ int mbedtls_sha1_starts_ret( mbedtls_sha1_context *ctx ); @@ -130,11 +137,14 @@ int mbedtls_sha1_starts_ret( mbedtls_sha1_context *ctx ); * constitutes a security risk. We recommend considering * stronger message digests instead. * - * \param ctx The SHA-1 context. + * \param ctx The SHA-1 context. This must be initialized + * and have a hash operation started. * \param input The buffer holding the input data. - * \param ilen The length of the input data. + * This must be a readable buffer of length \p ilen Bytes. + * \param ilen The length of the input data \p input in Bytes. * * \return \c 0 on success. + * \return A negative error code on failure. */ int mbedtls_sha1_update_ret( mbedtls_sha1_context *ctx, const unsigned char *input, @@ -148,10 +158,13 @@ int mbedtls_sha1_update_ret( mbedtls_sha1_context *ctx, * constitutes a security risk. We recommend considering * stronger message digests instead. * - * \param ctx The SHA-1 context. - * \param output The SHA-1 checksum result. + * \param ctx The SHA-1 context to use. This must be initialized and + * have a hash operation started. + * \param output The SHA-1 checksum result. This must be a writable + * buffer of length \c 20 Bytes. * * \return \c 0 on success. + * \return A negative error code on failure. */ int mbedtls_sha1_finish_ret( mbedtls_sha1_context *ctx, unsigned char output[20] ); @@ -163,10 +176,12 @@ int mbedtls_sha1_finish_ret( mbedtls_sha1_context *ctx, * constitutes a security risk. We recommend considering * stronger message digests instead. * - * \param ctx The SHA-1 context. - * \param data The data block being processed. + * \param ctx The SHA-1 context to use. This must be initialized. + * \param data The data block being processed. This must be a + * readable buffer of length \c 64 Bytes. * * \return \c 0 on success. + * \return A negative error code on failure. * */ int mbedtls_internal_sha1_process( mbedtls_sha1_context *ctx, @@ -187,7 +202,7 @@ int mbedtls_internal_sha1_process( mbedtls_sha1_context *ctx, * * \deprecated Superseded by mbedtls_sha1_starts_ret() in 2.7.0. * - * \param ctx The SHA-1 context to initialize. + * \param ctx The SHA-1 context to initialize. This must be initialized. * */ MBEDTLS_DEPRECATED void mbedtls_sha1_starts( mbedtls_sha1_context *ctx ); @@ -202,9 +217,11 @@ MBEDTLS_DEPRECATED void mbedtls_sha1_starts( mbedtls_sha1_context *ctx ); * * \deprecated Superseded by mbedtls_sha1_update_ret() in 2.7.0. * - * \param ctx The SHA-1 context. + * \param ctx The SHA-1 context. This must be initialized and + * have a hash operation started. * \param input The buffer holding the input data. - * \param ilen The length of the input data. + * This must be a readable buffer of length \p ilen Bytes. + * \param ilen The length of the input data \p input in Bytes. * */ MBEDTLS_DEPRECATED void mbedtls_sha1_update( mbedtls_sha1_context *ctx, @@ -221,9 +238,10 @@ MBEDTLS_DEPRECATED void mbedtls_sha1_update( mbedtls_sha1_context *ctx, * * \deprecated Superseded by mbedtls_sha1_finish_ret() in 2.7.0. * - * \param ctx The SHA-1 context. + * \param ctx The SHA-1 context. This must be initialized and + * have a hash operation started. * \param output The SHA-1 checksum result. - * + * This must be a writable buffer of length \c 20 Bytes. */ MBEDTLS_DEPRECATED void mbedtls_sha1_finish( mbedtls_sha1_context *ctx, unsigned char output[20] ); @@ -237,8 +255,9 @@ MBEDTLS_DEPRECATED void mbedtls_sha1_finish( mbedtls_sha1_context *ctx, * * \deprecated Superseded by mbedtls_internal_sha1_process() in 2.7.0. * - * \param ctx The SHA-1 context. + * \param ctx The SHA-1 context. This must be initialized. * \param data The data block being processed. + * This must be a readable buffer of length \c 64 bytes. * */ MBEDTLS_DEPRECATED void mbedtls_sha1_process( mbedtls_sha1_context *ctx, @@ -261,10 +280,13 @@ MBEDTLS_DEPRECATED void mbedtls_sha1_process( mbedtls_sha1_context *ctx, * stronger message digests instead. * * \param input The buffer holding the input data. - * \param ilen The length of the input data. + * This must be a readable buffer of length \p ilen Bytes. + * \param ilen The length of the input data \p input in Bytes. * \param output The SHA-1 checksum result. + * This must be a writable buffer of length \c 20 Bytes. * * \return \c 0 on success. + * \return A negative error code on failure. * */ int mbedtls_sha1_ret( const unsigned char *input, @@ -293,8 +315,10 @@ int mbedtls_sha1_ret( const unsigned char *input, * \deprecated Superseded by mbedtls_sha1_ret() in 2.7.0 * * \param input The buffer holding the input data. - * \param ilen The length of the input data. - * \param output The SHA-1 checksum result. + * This must be a readable buffer of length \p ilen Bytes. + * \param ilen The length of the input data \p input in Bytes. + * \param output The SHA-1 checksum result. This must be a writable + * buffer of size \c 20 Bytes. * */ MBEDTLS_DEPRECATED void mbedtls_sha1( const unsigned char *input, diff --git a/thirdparty/mbedtls/include/mbedtls/sha256.h b/thirdparty/mbedtls/include/mbedtls/sha256.h index adf31a82ed..0e42f0abba 100644 --- a/thirdparty/mbedtls/include/mbedtls/sha256.h +++ b/thirdparty/mbedtls/include/mbedtls/sha256.h @@ -36,7 +36,9 @@ #include <stddef.h> #include <stdint.h> +/* MBEDTLS_ERR_SHA256_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_SHA256_HW_ACCEL_FAILED -0x0037 /**< SHA-256 hardware accelerator failed */ +#define MBEDTLS_ERR_SHA256_BAD_INPUT_DATA -0x0074 /**< SHA-256 input data was malformed. */ #ifdef __cplusplus extern "C" { @@ -53,7 +55,7 @@ extern "C" { * checksum calculations. The choice between these two is * made in the call to mbedtls_sha256_starts_ret(). */ -typedef struct +typedef struct mbedtls_sha256_context { uint32_t total[2]; /*!< The number of Bytes processed. */ uint32_t state[8]; /*!< The intermediate digest state. */ @@ -70,22 +72,24 @@ mbedtls_sha256_context; /** * \brief This function initializes a SHA-256 context. * - * \param ctx The SHA-256 context to initialize. + * \param ctx The SHA-256 context to initialize. This must not be \c NULL. */ void mbedtls_sha256_init( mbedtls_sha256_context *ctx ); /** * \brief This function clears a SHA-256 context. * - * \param ctx The SHA-256 context to clear. + * \param ctx The SHA-256 context to clear. This may be \c NULL, in which + * case this function returns immediately. If it is not \c NULL, + * it must point to an initialized SHA-256 context. */ void mbedtls_sha256_free( mbedtls_sha256_context *ctx ); /** * \brief This function clones the state of a SHA-256 context. * - * \param dst The destination context. - * \param src The context to clone. + * \param dst The destination context. This must be initialized. + * \param src The context to clone. This must be initialized. */ void mbedtls_sha256_clone( mbedtls_sha256_context *dst, const mbedtls_sha256_context *src ); @@ -94,11 +98,12 @@ void mbedtls_sha256_clone( mbedtls_sha256_context *dst, * \brief This function starts a SHA-224 or SHA-256 checksum * calculation. * - * \param ctx The context to initialize. - * \param is224 Determines which function to use: - * 0: Use SHA-256, or 1: Use SHA-224. + * \param ctx The context to use. This must be initialized. + * \param is224 This determines which function to use. This must be + * either \c 0 for SHA-256, or \c 1 for SHA-224. * * \return \c 0 on success. + * \return A negative error code on failure. */ int mbedtls_sha256_starts_ret( mbedtls_sha256_context *ctx, int is224 ); @@ -106,11 +111,14 @@ int mbedtls_sha256_starts_ret( mbedtls_sha256_context *ctx, int is224 ); * \brief This function feeds an input buffer into an ongoing * SHA-256 checksum calculation. * - * \param ctx The SHA-256 context. - * \param input The buffer holding the data. - * \param ilen The length of the input data. + * \param ctx The SHA-256 context. This must be initialized + * and have a hash operation started. + * \param input The buffer holding the data. This must be a readable + * buffer of length \p ilen Bytes. + * \param ilen The length of the input data in Bytes. * * \return \c 0 on success. + * \return A negative error code on failure. */ int mbedtls_sha256_update_ret( mbedtls_sha256_context *ctx, const unsigned char *input, @@ -120,10 +128,13 @@ int mbedtls_sha256_update_ret( mbedtls_sha256_context *ctx, * \brief This function finishes the SHA-256 operation, and writes * the result to the output buffer. * - * \param ctx The SHA-256 context. + * \param ctx The SHA-256 context. This must be initialized + * and have a hash operation started. * \param output The SHA-224 or SHA-256 checksum result. + * This must be a writable buffer of length \c 32 Bytes. * * \return \c 0 on success. + * \return A negative error code on failure. */ int mbedtls_sha256_finish_ret( mbedtls_sha256_context *ctx, unsigned char output[32] ); @@ -133,10 +144,12 @@ int mbedtls_sha256_finish_ret( mbedtls_sha256_context *ctx, * the ongoing SHA-256 computation. This function is for * internal use only. * - * \param ctx The SHA-256 context. - * \param data The buffer holding one block of data. + * \param ctx The SHA-256 context. This must be initialized. + * \param data The buffer holding one block of data. This must + * be a readable buffer of length \c 64 Bytes. * * \return \c 0 on success. + * \return A negative error code on failure. */ int mbedtls_internal_sha256_process( mbedtls_sha256_context *ctx, const unsigned char data[64] ); @@ -151,12 +164,11 @@ int mbedtls_internal_sha256_process( mbedtls_sha256_context *ctx, * \brief This function starts a SHA-224 or SHA-256 checksum * calculation. * - * * \deprecated Superseded by mbedtls_sha256_starts_ret() in 2.7.0. * - * \param ctx The context to initialize. - * \param is224 Determines which function to use: - * 0: Use SHA-256, or 1: Use SHA-224. + * \param ctx The context to use. This must be initialized. + * \param is224 Determines which function to use. This must be + * either \c 0 for SHA-256, or \c 1 for SHA-224. */ MBEDTLS_DEPRECATED void mbedtls_sha256_starts( mbedtls_sha256_context *ctx, int is224 ); @@ -167,9 +179,11 @@ MBEDTLS_DEPRECATED void mbedtls_sha256_starts( mbedtls_sha256_context *ctx, * * \deprecated Superseded by mbedtls_sha256_update_ret() in 2.7.0. * - * \param ctx The SHA-256 context to initialize. - * \param input The buffer holding the data. - * \param ilen The length of the input data. + * \param ctx The SHA-256 context to use. This must be + * initialized and have a hash operation started. + * \param input The buffer holding the data. This must be a readable + * buffer of length \p ilen Bytes. + * \param ilen The length of the input data in Bytes. */ MBEDTLS_DEPRECATED void mbedtls_sha256_update( mbedtls_sha256_context *ctx, const unsigned char *input, @@ -181,8 +195,10 @@ MBEDTLS_DEPRECATED void mbedtls_sha256_update( mbedtls_sha256_context *ctx, * * \deprecated Superseded by mbedtls_sha256_finish_ret() in 2.7.0. * - * \param ctx The SHA-256 context. - * \param output The SHA-224 or SHA-256 checksum result. + * \param ctx The SHA-256 context. This must be initialized and + * have a hash operation started. + * \param output The SHA-224 or SHA-256 checksum result. This must be + * a writable buffer of length \c 32 Bytes. */ MBEDTLS_DEPRECATED void mbedtls_sha256_finish( mbedtls_sha256_context *ctx, unsigned char output[32] ); @@ -194,8 +210,9 @@ MBEDTLS_DEPRECATED void mbedtls_sha256_finish( mbedtls_sha256_context *ctx, * * \deprecated Superseded by mbedtls_internal_sha256_process() in 2.7.0. * - * \param ctx The SHA-256 context. - * \param data The buffer holding one block of data. + * \param ctx The SHA-256 context. This must be initialized. + * \param data The buffer holding one block of data. This must be + * a readable buffer of size \c 64 Bytes. */ MBEDTLS_DEPRECATED void mbedtls_sha256_process( mbedtls_sha256_context *ctx, const unsigned char data[64] ); @@ -213,11 +230,13 @@ MBEDTLS_DEPRECATED void mbedtls_sha256_process( mbedtls_sha256_context *ctx, * The SHA-256 result is calculated as * output = SHA-256(input buffer). * - * \param input The buffer holding the input data. - * \param ilen The length of the input data. - * \param output The SHA-224 or SHA-256 checksum result. - * \param is224 Determines which function to use: - * 0: Use SHA-256, or 1: Use SHA-224. + * \param input The buffer holding the data. This must be a readable + * buffer of length \p ilen Bytes. + * \param ilen The length of the input data in Bytes. + * \param output The SHA-224 or SHA-256 checksum result. This must + * be a writable buffer of length \c 32 Bytes. + * \param is224 Determines which function to use. This must be + * either \c 0 for SHA-256, or \c 1 for SHA-224. */ int mbedtls_sha256_ret( const unsigned char *input, size_t ilen, @@ -243,11 +262,13 @@ int mbedtls_sha256_ret( const unsigned char *input, * * \deprecated Superseded by mbedtls_sha256_ret() in 2.7.0. * - * \param input The buffer holding the data. - * \param ilen The length of the input data. - * \param output The SHA-224 or SHA-256 checksum result. - * \param is224 Determines which function to use: - * 0: Use SHA-256, or 1: Use SHA-224. + * \param input The buffer holding the data. This must be a readable + * buffer of length \p ilen Bytes. + * \param ilen The length of the input data in Bytes. + * \param output The SHA-224 or SHA-256 checksum result. This must be + * a writable buffer of length \c 32 Bytes. + * \param is224 Determines which function to use. This must be either + * \c 0 for SHA-256, or \c 1 for SHA-224. */ MBEDTLS_DEPRECATED void mbedtls_sha256( const unsigned char *input, size_t ilen, diff --git a/thirdparty/mbedtls/include/mbedtls/sha512.h b/thirdparty/mbedtls/include/mbedtls/sha512.h index 5bb83f43bd..7b26cf5cc3 100644 --- a/thirdparty/mbedtls/include/mbedtls/sha512.h +++ b/thirdparty/mbedtls/include/mbedtls/sha512.h @@ -35,7 +35,9 @@ #include <stddef.h> #include <stdint.h> +/* MBEDTLS_ERR_SHA512_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_SHA512_HW_ACCEL_FAILED -0x0039 /**< SHA-512 hardware accelerator failed */ +#define MBEDTLS_ERR_SHA512_BAD_INPUT_DATA -0x0075 /**< SHA-512 input data was malformed. */ #ifdef __cplusplus extern "C" { @@ -52,7 +54,7 @@ extern "C" { * checksum calculations. The choice between these two is * made in the call to mbedtls_sha512_starts_ret(). */ -typedef struct +typedef struct mbedtls_sha512_context { uint64_t total[2]; /*!< The number of Bytes processed. */ uint64_t state[8]; /*!< The intermediate digest state. */ @@ -69,22 +71,26 @@ mbedtls_sha512_context; /** * \brief This function initializes a SHA-512 context. * - * \param ctx The SHA-512 context to initialize. + * \param ctx The SHA-512 context to initialize. This must + * not be \c NULL. */ void mbedtls_sha512_init( mbedtls_sha512_context *ctx ); /** * \brief This function clears a SHA-512 context. * - * \param ctx The SHA-512 context to clear. + * \param ctx The SHA-512 context to clear. This may be \c NULL, + * in which case this function does nothing. If it + * is not \c NULL, it must point to an initialized + * SHA-512 context. */ void mbedtls_sha512_free( mbedtls_sha512_context *ctx ); /** * \brief This function clones the state of a SHA-512 context. * - * \param dst The destination context. - * \param src The context to clone. + * \param dst The destination context. This must be initialized. + * \param src The context to clone. This must be initialized. */ void mbedtls_sha512_clone( mbedtls_sha512_context *dst, const mbedtls_sha512_context *src ); @@ -93,11 +99,12 @@ void mbedtls_sha512_clone( mbedtls_sha512_context *dst, * \brief This function starts a SHA-384 or SHA-512 checksum * calculation. * - * \param ctx The SHA-512 context to initialize. - * \param is384 Determines which function to use: - * 0: Use SHA-512, or 1: Use SHA-384. + * \param ctx The SHA-512 context to use. This must be initialized. + * \param is384 Determines which function to use. This must be + * either \c for SHA-512, or \c 1 for SHA-384. * * \return \c 0 on success. + * \return A negative error code on failure. */ int mbedtls_sha512_starts_ret( mbedtls_sha512_context *ctx, int is384 ); @@ -105,11 +112,14 @@ int mbedtls_sha512_starts_ret( mbedtls_sha512_context *ctx, int is384 ); * \brief This function feeds an input buffer into an ongoing * SHA-512 checksum calculation. * - * \param ctx The SHA-512 context. - * \param input The buffer holding the input data. - * \param ilen The length of the input data. + * \param ctx The SHA-512 context. This must be initialized + * and have a hash operation started. + * \param input The buffer holding the input data. This must + * be a readable buffer of length \p ilen Bytes. + * \param ilen The length of the input data in Bytes. * * \return \c 0 on success. + * \return A negative error code on failure. */ int mbedtls_sha512_update_ret( mbedtls_sha512_context *ctx, const unsigned char *input, @@ -120,10 +130,13 @@ int mbedtls_sha512_update_ret( mbedtls_sha512_context *ctx, * the result to the output buffer. This function is for * internal use only. * - * \param ctx The SHA-512 context. + * \param ctx The SHA-512 context. This must be initialized + * and have a hash operation started. * \param output The SHA-384 or SHA-512 checksum result. + * This must be a writable buffer of length \c 64 Bytes. * * \return \c 0 on success. + * \return A negative error code on failure. */ int mbedtls_sha512_finish_ret( mbedtls_sha512_context *ctx, unsigned char output[64] ); @@ -132,10 +145,12 @@ int mbedtls_sha512_finish_ret( mbedtls_sha512_context *ctx, * \brief This function processes a single data block within * the ongoing SHA-512 computation. * - * \param ctx The SHA-512 context. - * \param data The buffer holding one block of data. + * \param ctx The SHA-512 context. This must be initialized. + * \param data The buffer holding one block of data. This + * must be a readable buffer of length \c 128 Bytes. * * \return \c 0 on success. + * \return A negative error code on failure. */ int mbedtls_internal_sha512_process( mbedtls_sha512_context *ctx, const unsigned char data[128] ); @@ -151,9 +166,9 @@ int mbedtls_internal_sha512_process( mbedtls_sha512_context *ctx, * * \deprecated Superseded by mbedtls_sha512_starts_ret() in 2.7.0 * - * \param ctx The SHA-512 context to initialize. - * \param is384 Determines which function to use: - * 0: Use SHA-512, or 1: Use SHA-384. + * \param ctx The SHA-512 context to use. This must be initialized. + * \param is384 Determines which function to use. This must be either + * \c 0 for SHA-512 or \c 1 for SHA-384. */ MBEDTLS_DEPRECATED void mbedtls_sha512_starts( mbedtls_sha512_context *ctx, int is384 ); @@ -164,9 +179,11 @@ MBEDTLS_DEPRECATED void mbedtls_sha512_starts( mbedtls_sha512_context *ctx, * * \deprecated Superseded by mbedtls_sha512_update_ret() in 2.7.0. * - * \param ctx The SHA-512 context. - * \param input The buffer holding the data. - * \param ilen The length of the input data. + * \param ctx The SHA-512 context. This must be initialized + * and have a hash operation started. + * \param input The buffer holding the data. This must be a readable + * buffer of length \p ilen Bytes. + * \param ilen The length of the input data in Bytes. */ MBEDTLS_DEPRECATED void mbedtls_sha512_update( mbedtls_sha512_context *ctx, const unsigned char *input, @@ -178,8 +195,10 @@ MBEDTLS_DEPRECATED void mbedtls_sha512_update( mbedtls_sha512_context *ctx, * * \deprecated Superseded by mbedtls_sha512_finish_ret() in 2.7.0. * - * \param ctx The SHA-512 context. - * \param output The SHA-384 or SHA-512 checksum result. + * \param ctx The SHA-512 context. This must be initialized + * and have a hash operation started. + * \param output The SHA-384 or SHA-512 checksum result. This must + * be a writable buffer of size \c 64 Bytes. */ MBEDTLS_DEPRECATED void mbedtls_sha512_finish( mbedtls_sha512_context *ctx, unsigned char output[64] ); @@ -191,8 +210,9 @@ MBEDTLS_DEPRECATED void mbedtls_sha512_finish( mbedtls_sha512_context *ctx, * * \deprecated Superseded by mbedtls_internal_sha512_process() in 2.7.0. * - * \param ctx The SHA-512 context. - * \param data The buffer holding one block of data. + * \param ctx The SHA-512 context. This must be initialized. + * \param data The buffer holding one block of data. This must be + * a readable buffer of length \c 128 Bytes. */ MBEDTLS_DEPRECATED void mbedtls_sha512_process( mbedtls_sha512_context *ctx, @@ -211,13 +231,16 @@ MBEDTLS_DEPRECATED void mbedtls_sha512_process( * The SHA-512 result is calculated as * output = SHA-512(input buffer). * - * \param input The buffer holding the input data. - * \param ilen The length of the input data. + * \param input The buffer holding the input data. This must be + * a readable buffer of length \p ilen Bytes. + * \param ilen The length of the input data in Bytes. * \param output The SHA-384 or SHA-512 checksum result. - * \param is384 Determines which function to use: - * 0: Use SHA-512, or 1: Use SHA-384. + * This must be a writable buffer of length \c 64 Bytes. + * \param is384 Determines which function to use. This must be either + * \c 0 for SHA-512, or \c 1 for SHA-384. * * \return \c 0 on success. + * \return A negative error code on failure. */ int mbedtls_sha512_ret( const unsigned char *input, size_t ilen, @@ -242,11 +265,13 @@ int mbedtls_sha512_ret( const unsigned char *input, * * \deprecated Superseded by mbedtls_sha512_ret() in 2.7.0 * - * \param input The buffer holding the data. - * \param ilen The length of the input data. - * \param output The SHA-384 or SHA-512 checksum result. - * \param is384 Determines which function to use: - * 0: Use SHA-512, or 1: Use SHA-384. + * \param input The buffer holding the data. This must be a + * readable buffer of length \p ilen Bytes. + * \param ilen The length of the input data in Bytes. + * \param output The SHA-384 or SHA-512 checksum result. This must + * be a writable buffer of length \c 64 Bytes. + * \param is384 Determines which function to use. This must be either + * \c 0 for SHA-512, or \c 1 for SHA-384. */ MBEDTLS_DEPRECATED void mbedtls_sha512( const unsigned char *input, size_t ilen, diff --git a/thirdparty/mbedtls/include/mbedtls/ssl.h b/thirdparty/mbedtls/include/mbedtls/ssl.h index 2d511a8ea1..8106bb4ab0 100644 --- a/thirdparty/mbedtls/include/mbedtls/ssl.h +++ b/thirdparty/mbedtls/include/mbedtls/ssl.h @@ -121,6 +121,8 @@ #define MBEDTLS_ERR_SSL_INVALID_VERIFY_HASH -0x6600 /**< Couldn't set the hash for verifying CertificateVerify */ #define MBEDTLS_ERR_SSL_CONTINUE_PROCESSING -0x6580 /**< Internal-only message signaling that further message-processing should be done */ #define MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS -0x6500 /**< The asynchronous operation is not completed yet. */ +#define MBEDTLS_ERR_SSL_EARLY_MESSAGE -0x6480 /**< Internal-only message signaling that a message arrived early. */ +#define MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS -0x7000 /**< A cryptographic operation is in progress. Try again later. */ /* * Various constants @@ -242,6 +244,14 @@ #define MBEDTLS_SSL_OUT_CONTENT_LEN MBEDTLS_SSL_MAX_CONTENT_LEN #endif +/* + * Maximum number of heap-allocated bytes for the purpose of + * DTLS handshake message reassembly and future message buffering. + */ +#if !defined(MBEDTLS_SSL_DTLS_MAX_BUFFERING) +#define MBEDTLS_SSL_DTLS_MAX_BUFFERING 32768 +#endif + /* \} name SECTION: Module settings */ /* @@ -1022,14 +1032,14 @@ struct mbedtls_ssl_context int renego_records_seen; /*!< Records since renego request, or with DTLS, number of retransmissions of request if renego_max_records is < 0 */ -#endif +#endif /* MBEDTLS_SSL_RENEGOTIATION */ int major_ver; /*!< equal to MBEDTLS_SSL_MAJOR_VERSION_3 */ int minor_ver; /*!< either 0 (SSL3) or 1 (TLS1.0) */ #if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT) unsigned badmac_seen; /*!< records with a bad MAC received */ -#endif +#endif /* MBEDTLS_SSL_DTLS_BADMAC_LIMIT */ mbedtls_ssl_send_t *f_send; /*!< Callback for network send */ mbedtls_ssl_recv_t *f_recv; /*!< Callback for network receive */ @@ -1085,11 +1095,11 @@ struct mbedtls_ssl_context uint16_t in_epoch; /*!< DTLS epoch for incoming records */ size_t next_record_offset; /*!< offset of the next record in datagram (equal to in_left if none) */ -#endif +#endif /* MBEDTLS_SSL_PROTO_DTLS */ #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY) uint64_t in_window_top; /*!< last validated record seq_num */ uint64_t in_window; /*!< bitmask for replay detection */ -#endif +#endif /* MBEDTLS_SSL_DTLS_ANTI_REPLAY */ size_t in_hslen; /*!< current handshake message length, including the handshake header */ @@ -1098,6 +1108,11 @@ struct mbedtls_ssl_context int keep_current_message; /*!< drop or reuse current message on next call to record layer? */ +#if defined(MBEDTLS_SSL_PROTO_DTLS) + uint8_t disable_datagram_packing; /*!< Disable packing multiple records + * within a single datagram. */ +#endif /* MBEDTLS_SSL_PROTO_DTLS */ + /* * Record layer (outgoing data) */ @@ -1112,12 +1127,18 @@ struct mbedtls_ssl_context size_t out_msglen; /*!< record header: message length */ size_t out_left; /*!< amount of data not yet written */ + unsigned char cur_out_ctr[8]; /*!< Outgoing record sequence number. */ + +#if defined(MBEDTLS_SSL_PROTO_DTLS) + uint16_t mtu; /*!< path mtu, used to fragment outgoing messages */ +#endif /* MBEDTLS_SSL_PROTO_DTLS */ + #if defined(MBEDTLS_ZLIB_SUPPORT) unsigned char *compress_buf; /*!< zlib data buffer */ -#endif +#endif /* MBEDTLS_ZLIB_SUPPORT */ #if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING) signed char split_done; /*!< current record already splitted? */ -#endif +#endif /* MBEDTLS_SSL_CBC_RECORD_SPLITTING */ /* * PKI layer @@ -1130,11 +1151,11 @@ struct mbedtls_ssl_context #if defined(MBEDTLS_X509_CRT_PARSE_C) char *hostname; /*!< expected peer CN for verification (and SNI if available) */ -#endif +#endif /* MBEDTLS_X509_CRT_PARSE_C */ #if defined(MBEDTLS_SSL_ALPN) const char *alpn_chosen; /*!< negotiated protocol */ -#endif +#endif /* MBEDTLS_SSL_ALPN */ /* * Information for DTLS hello verify @@ -1142,7 +1163,7 @@ struct mbedtls_ssl_context #if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY) && defined(MBEDTLS_SSL_SRV_C) unsigned char *cli_id; /*!< transport-level ID of the client */ size_t cli_id_len; /*!< length of cli_id */ -#endif +#endif /* MBEDTLS_SSL_DTLS_HELLO_VERIFY && MBEDTLS_SSL_SRV_C */ /* * Secure renegotiation @@ -1154,7 +1175,7 @@ struct mbedtls_ssl_context size_t verify_data_len; /*!< length of verify data stored */ char own_verify_data[MBEDTLS_SSL_VERIFY_DATA_MAX_LEN]; /*!< previous handshake verify data */ char peer_verify_data[MBEDTLS_SSL_VERIFY_DATA_MAX_LEN]; /*!< previous handshake verify data */ -#endif +#endif /* MBEDTLS_SSL_RENEGOTIATION */ }; #if defined(MBEDTLS_SSL_HW_RECORD_ACCEL) @@ -1374,6 +1395,52 @@ void mbedtls_ssl_set_bio( mbedtls_ssl_context *ssl, mbedtls_ssl_recv_t *f_recv, mbedtls_ssl_recv_timeout_t *f_recv_timeout ); +#if defined(MBEDTLS_SSL_PROTO_DTLS) +/** + * \brief Set the Maximum Tranport Unit (MTU). + * Special value: 0 means unset (no limit). + * This represents the maximum size of a datagram payload + * handled by the transport layer (usually UDP) as determined + * by the network link and stack. In practice, this controls + * the maximum size datagram the DTLS layer will pass to the + * \c f_send() callback set using \c mbedtls_ssl_set_bio(). + * + * \note The limit on datagram size is converted to a limit on + * record payload by subtracting the current overhead of + * encapsulation and encryption/authentication if any. + * + * \note This can be called at any point during the connection, for + * example when a Path Maximum Transfer Unit (PMTU) + * estimate becomes available from other sources, + * such as lower (or higher) protocol layers. + * + * \note This setting only controls the size of the packets we send, + * and does not restrict the size of the datagrams we're + * willing to receive. Client-side, you can request the + * server to use smaller records with \c + * mbedtls_ssl_conf_max_frag_len(). + * + * \note If both a MTU and a maximum fragment length have been + * configured (or negotiated with the peer), the resulting + * lower limit on record payload (see first note) is used. + * + * \note This can only be used to decrease the maximum size + * of datagrams (hence records, see first note) sent. It + * cannot be used to increase the maximum size of records over + * the limit set by #MBEDTLS_SSL_OUT_CONTENT_LEN. + * + * \note Values lower than the current record layer expansion will + * result in an error when trying to send data. + * + * \note Using record compression together with a non-zero MTU value + * will result in an error when trying to send data. + * + * \param ssl SSL context + * \param mtu Value of the path MTU in bytes + */ +void mbedtls_ssl_set_mtu( mbedtls_ssl_context *ssl, uint16_t mtu ); +#endif /* MBEDTLS_SSL_PROTO_DTLS */ + /** * \brief Set the timeout period for mbedtls_ssl_read() * (Default: no timeout.) @@ -1757,6 +1824,38 @@ void mbedtls_ssl_conf_dtls_badmac_limit( mbedtls_ssl_config *conf, unsigned limi #endif /* MBEDTLS_SSL_DTLS_BADMAC_LIMIT */ #if defined(MBEDTLS_SSL_PROTO_DTLS) + +/** + * \brief Allow or disallow packing of multiple handshake records + * within a single datagram. + * + * \param ssl The SSL context to configure. + * \param allow_packing This determines whether datagram packing may + * be used or not. A value of \c 0 means that every + * record will be sent in a separate datagram; a + * value of \c 1 means that, if space permits, + * multiple handshake messages (including CCS) belonging to + * a single flight may be packed within a single datagram. + * + * \note This is enabled by default and should only be disabled + * for test purposes, or if datagram packing causes + * interoperability issues with peers that don't support it. + * + * \note Allowing datagram packing reduces the network load since + * there's less overhead if multiple messages share the same + * datagram. Also, it increases the handshake efficiency + * since messages belonging to a single datagram will not + * be reordered in transit, and so future message buffering + * or flight retransmission (if no buffering is used) as + * means to deal with reordering are needed less frequently. + * + * \note Application records are not affected by this option and + * are currently always sent in separate datagrams. + * + */ +void mbedtls_ssl_set_datagram_packing( mbedtls_ssl_context *ssl, + unsigned allow_packing ); + /** * \brief Set retransmit timeout values for the DTLS handshake. * (DTLS only, no effect on TLS.) @@ -1945,6 +2044,14 @@ void mbedtls_ssl_conf_ca_chain( mbedtls_ssl_config *conf, * whether it matches those preferences - the server can then * decide what it wants to do with it. * + * \note The provided \p pk_key needs to match the public key in the + * first certificate in \p own_cert, or all handshakes using + * that certificate will fail. It is your responsibility + * to ensure that; this function will not perform any check. + * You may use mbedtls_pk_check_pair() in order to perform + * this check yourself, but be aware that this function can + * be computationally expensive on some key types. + * * \param conf SSL configuration * \param own_cert own public certificate chain * \param pk_key own private key @@ -2433,6 +2540,18 @@ void mbedtls_ssl_conf_cert_req_ca_list( mbedtls_ssl_config *conf, * (Client: set maximum fragment length to emit *and* * negotiate with the server during handshake) * + * \note With TLS, this currently only affects ApplicationData (sent + * with \c mbedtls_ssl_read()), not handshake messages. + * With DTLS, this affects both ApplicationData and handshake. + * + * \note This sets the maximum length for a record's payload, + * excluding record overhead that will be added to it, see + * \c mbedtls_ssl_get_record_expansion(). + * + * \note For DTLS, it is also possible to set a limit for the total + * size of daragrams passed to the transport layer, including + * record overhead, see \c mbedtls_ssl_set_mtu(). + * * \param conf SSL configuration * \param mfl_code Code for maximum fragment length (allowed values: * MBEDTLS_SSL_MAX_FRAG_LEN_512, MBEDTLS_SSL_MAX_FRAG_LEN_1024, @@ -2663,13 +2782,14 @@ size_t mbedtls_ssl_get_bytes_avail( const mbedtls_ssl_context *ssl ); /** * \brief Return the result of the certificate verification * - * \param ssl SSL context + * \param ssl The SSL context to use. * - * \return 0 if successful, - * -1 if result is not available (eg because the handshake was - * aborted too early), or - * a combination of BADCERT_xxx and BADCRL_xxx flags, see - * x509.h + * \return \c 0 if the certificate verification was successful. + * \return \c -1u if the result is not available. This may happen + * e.g. if the handshake aborts early, or a verification + * callback returned a fatal error. + * \return A bitwise combination of \c MBEDTLS_X509_BADCERT_XXX + * and \c MBEDTLS_X509_BADCRL_XXX failure flags; see x509.h. */ uint32_t mbedtls_ssl_get_verify_result( const mbedtls_ssl_context *ssl ); @@ -2695,6 +2815,9 @@ const char *mbedtls_ssl_get_version( const mbedtls_ssl_context *ssl ); * \brief Return the (maximum) number of bytes added by the record * layer: header + encryption/MAC overhead (inc. padding) * + * \note This function is not available (always returns an error) + * when record compression is enabled. + * * \param ssl SSL context * * \return Current maximum record expansion in bytes, or @@ -2709,6 +2832,23 @@ int mbedtls_ssl_get_record_expansion( const mbedtls_ssl_context *ssl ); * This is the value negotiated with peer if any, * or the locally configured value. * + * \sa mbedtls_ssl_conf_max_frag_len() + * \sa mbedtls_ssl_get_max_record_payload() + * + * \param ssl SSL context + * + * \return Current maximum fragment length. + */ +size_t mbedtls_ssl_get_max_frag_len( const mbedtls_ssl_context *ssl ); +#endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */ + +/** + * \brief Return the current maximum outgoing record payload in bytes. + * This takes into account the config.h setting \c + * MBEDTLS_SSL_OUT_CONTENT_LEN, the configured and negotiated + * max fragment length extension if used, and for DTLS the + * path MTU as configured and current record expansion. + * * \note With DTLS, \c mbedtls_ssl_write() will return an error if * called with a larger length value. * With TLS, \c mbedtls_ssl_write() will fragment the input if @@ -2716,12 +2856,19 @@ int mbedtls_ssl_get_record_expansion( const mbedtls_ssl_context *ssl ); * to the caller to call \c mbedtls_ssl_write() again in * order to send the remaining bytes if any. * + * \note This function is not available (always returns an error) + * when record compression is enabled. + * + * \sa mbedtls_ssl_set_mtu() + * \sa mbedtls_ssl_get_max_frag_len() + * \sa mbedtls_ssl_get_record_expansion() + * * \param ssl SSL context * - * \return Current maximum fragment length. + * \return Current maximum payload for an outgoing record, + * or a negative error code. */ -size_t mbedtls_ssl_get_max_frag_len( const mbedtls_ssl_context *ssl ); -#endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */ +int mbedtls_ssl_get_max_out_record_payload( const mbedtls_ssl_context *ssl ); #if defined(MBEDTLS_X509_CRT_PARSE_C) /** @@ -2776,35 +2923,50 @@ int mbedtls_ssl_get_session( const mbedtls_ssl_context *ssl, mbedtls_ssl_session * * \param ssl SSL context * - * \return 0 if successful, or - * MBEDTLS_ERR_SSL_WANT_READ or MBEDTLS_ERR_SSL_WANT_WRITE, or - * MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED (see below), or - * a specific SSL error code. + * \return \c 0 if successful. + * \return #MBEDTLS_ERR_SSL_WANT_READ or #MBEDTLS_ERR_SSL_WANT_WRITE + * if the handshake is incomplete and waiting for data to + * be available for reading from or writing to the underlying + * transport - in this case you must call this function again + * when the underlying transport is ready for the operation. + * \return #MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS if an asynchronous + * operation is in progress (see + * mbedtls_ssl_conf_async_private_cb()) - in this case you + * must call this function again when the operation is ready. + * \return #MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS if a cryptographic + * operation is in progress (see mbedtls_ecp_set_max_ops()) - + * in this case you must call this function again to complete + * the handshake when you're done attending other tasks. + * \return #MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED if DTLS is in use + * and the client did not demonstrate reachability yet - in + * this case you must stop using the context (see below). + * \return Another SSL error code - in this case you must stop using + * the context (see below). + * + * \warning If this function returns something other than + * \c 0, + * #MBEDTLS_ERR_SSL_WANT_READ, + * #MBEDTLS_ERR_SSL_WANT_WRITE, + * #MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS or + * #MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS, + * you must stop using the SSL context for reading or writing, + * and either free it or call \c mbedtls_ssl_session_reset() + * on it before re-using it for a new connection; the current + * connection must be closed. * - * If this function returns MBEDTLS_ERR_SSL_WANT_READ, the - * handshake is unfinished and no further data is available - * from the underlying transport. In this case, you must call - * the function again at some later stage. + * \note If DTLS is in use, then you may choose to handle + * #MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED specially for logging + * purposes, as it is an expected return value rather than an + * actual error, but you still need to reset/free the context. * * \note Remarks regarding event-driven DTLS: - * If the function returns MBEDTLS_ERR_SSL_WANT_READ, no datagram + * If the function returns #MBEDTLS_ERR_SSL_WANT_READ, no datagram * from the underlying transport layer is currently being processed, * and it is safe to idle until the timer or the underlying transport * signal a new event. This is not true for a successful handshake, * in which case the datagram of the underlying transport that is * currently being processed might or might not contain further * DTLS records. - * - * \note If this function returns something other than 0 or - * MBEDTLS_ERR_SSL_WANT_READ/WRITE, you must stop using - * the SSL context for reading or writing, and either free it or - * call \c mbedtls_ssl_session_reset() on it before re-using it - * for a new connection; the current connection must be closed. - * - * \note If DTLS is in use, then you may choose to handle - * MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED specially for logging - * purposes, as it is an expected return value rather than an - * actual error, but you still need to reset/free the context. */ int mbedtls_ssl_handshake( mbedtls_ssl_context *ssl ); @@ -2812,20 +2974,21 @@ int mbedtls_ssl_handshake( mbedtls_ssl_context *ssl ); * \brief Perform a single step of the SSL handshake * * \note The state of the context (ssl->state) will be at - * the next state after execution of this function. Do not + * the next state after this function returns \c 0. Do not * call this function if state is MBEDTLS_SSL_HANDSHAKE_OVER. * - * \note If this function returns something other than 0 or - * MBEDTLS_ERR_SSL_WANT_READ/WRITE, you must stop using - * the SSL context for reading or writing, and either free it or - * call \c mbedtls_ssl_session_reset() on it before re-using it - * for a new connection; the current connection must be closed. - * * \param ssl SSL context * - * \return 0 if successful, or - * MBEDTLS_ERR_SSL_WANT_READ or MBEDTLS_ERR_SSL_WANT_WRITE, or - * a specific SSL error code. + * \return See mbedtls_ssl_handshake(). + * + * \warning If this function returns something other than \c 0, + * #MBEDTLS_ERR_SSL_WANT_READ, #MBEDTLS_ERR_SSL_WANT_WRITE, + * #MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS or + * #MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS, you must stop using + * the SSL context for reading or writing, and either free it + * or call \c mbedtls_ssl_session_reset() on it before + * re-using it for a new connection; the current connection + * must be closed. */ int mbedtls_ssl_handshake_step( mbedtls_ssl_context *ssl ); @@ -2840,13 +3003,18 @@ int mbedtls_ssl_handshake_step( mbedtls_ssl_context *ssl ); * \param ssl SSL context * * \return 0 if successful, or any mbedtls_ssl_handshake() return - * value. + * value except #MBEDTLS_ERR_SSL_CLIENT_RECONNECT that can't + * happen during a renegotiation. + * + * \warning If this function returns something other than \c 0, + * #MBEDTLS_ERR_SSL_WANT_READ, #MBEDTLS_ERR_SSL_WANT_WRITE, + * #MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS or + * #MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS, you must stop using + * the SSL context for reading or writing, and either free it + * or call \c mbedtls_ssl_session_reset() on it before + * re-using it for a new connection; the current connection + * must be closed. * - * \note If this function returns something other than 0 or - * MBEDTLS_ERR_SSL_WANT_READ/WRITE, you must stop using - * the SSL context for reading or writing, and either free it or - * call \c mbedtls_ssl_session_reset() on it before re-using it - * for a new connection; the current connection must be closed. */ int mbedtls_ssl_renegotiate( mbedtls_ssl_context *ssl ); #endif /* MBEDTLS_SSL_RENEGOTIATION */ @@ -2858,42 +3026,56 @@ int mbedtls_ssl_renegotiate( mbedtls_ssl_context *ssl ); * \param buf buffer that will hold the data * \param len maximum number of bytes to read * - * \return One of the following: - * - 0 if the read end of the underlying transport was closed, - * - the (positive) number of bytes read, or - * - a negative error code on failure. - * - * If MBEDTLS_ERR_SSL_WANT_READ is returned, no application data - * is available from the underlying transport. In this case, - * the function needs to be called again at some later stage. - * - * If MBEDTLS_ERR_SSL_WANT_WRITE is returned, a write is pending - * but the underlying transport isn't available for writing. In this - * case, the function needs to be called again at some later stage. + * \return The (positive) number of bytes read if successful. + * \return \c 0 if the read end of the underlying transport was closed + * - in this case you must stop using the context (see below). + * \return #MBEDTLS_ERR_SSL_WANT_READ or #MBEDTLS_ERR_SSL_WANT_WRITE + * if the handshake is incomplete and waiting for data to + * be available for reading from or writing to the underlying + * transport - in this case you must call this function again + * when the underlying transport is ready for the operation. + * \return #MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS if an asynchronous + * operation is in progress (see + * mbedtls_ssl_conf_async_private_cb()) - in this case you + * must call this function again when the operation is ready. + * \return #MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS if a cryptographic + * operation is in progress (see mbedtls_ecp_set_max_ops()) - + * in this case you must call this function again to complete + * the handshake when you're done attending other tasks. + * \return #MBEDTLS_ERR_SSL_CLIENT_RECONNECT if we're at the server + * side of a DTLS connection and the client is initiating a + * new connection using the same source port. See below. + * \return Another SSL error code - in this case you must stop using + * the context (see below). + * + * \warning If this function returns something other than + * a positive value, + * #MBEDTLS_ERR_SSL_WANT_READ, + * #MBEDTLS_ERR_SSL_WANT_WRITE, + * #MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS, + * #MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS or + * #MBEDTLS_ERR_SSL_CLIENT_RECONNECT, + * you must stop using the SSL context for reading or writing, + * and either free it or call \c mbedtls_ssl_session_reset() + * on it before re-using it for a new connection; the current + * connection must be closed. * - * When this function return MBEDTLS_ERR_SSL_CLIENT_RECONNECT + * \note When this function returns #MBEDTLS_ERR_SSL_CLIENT_RECONNECT * (which can only happen server-side), it means that a client * is initiating a new connection using the same source port. * You can either treat that as a connection close and wait * for the client to resend a ClientHello, or directly * continue with \c mbedtls_ssl_handshake() with the same - * context (as it has beeen reset internally). Either way, you - * should make sure this is seen by the application as a new + * context (as it has been reset internally). Either way, you + * must make sure this is seen by the application as a new * connection: application state, if any, should be reset, and * most importantly the identity of the client must be checked * again. WARNING: not validating the identity of the client * again, or not transmitting the new identity to the * application layer, would allow authentication bypass! * - * \note If this function returns something other than a positive value - * or MBEDTLS_ERR_SSL_WANT_READ/WRITE or MBEDTLS_ERR_SSL_CLIENT_RECONNECT, - * you must stop using the SSL context for reading or writing, - * and either free it or call \c mbedtls_ssl_session_reset() on it - * before re-using it for a new connection; the current connection - * must be closed. - * * \note Remarks regarding event-driven DTLS: - * - If the function returns MBEDTLS_ERR_SSL_WANT_READ, no datagram + * - If the function returns #MBEDTLS_ERR_SSL_WANT_READ, no datagram * from the underlying transport layer is currently being processed, * and it is safe to idle until the timer or the underlying transport * signal a new event. @@ -2922,21 +3104,39 @@ int mbedtls_ssl_read( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len ) * \param buf buffer holding the data * \param len how many bytes must be written * - * \return the number of bytes actually written (may be less than len), - * or MBEDTLS_ERR_SSL_WANT_WRITE or MBEDTLS_ERR_SSL_WANT_READ, - * or another negative error code. - * - * \note If this function returns something other than 0, a positive - * value or MBEDTLS_ERR_SSL_WANT_READ/WRITE, you must stop - * using the SSL context for reading or writing, and either - * free it or call \c mbedtls_ssl_session_reset() on it before - * re-using it for a new connection; the current connection - * must be closed. + * \return The (non-negative) number of bytes actually written if + * successful (may be less than \p len). + * \return #MBEDTLS_ERR_SSL_WANT_READ or #MBEDTLS_ERR_SSL_WANT_WRITE + * if the handshake is incomplete and waiting for data to + * be available for reading from or writing to the underlying + * transport - in this case you must call this function again + * when the underlying transport is ready for the operation. + * \return #MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS if an asynchronous + * operation is in progress (see + * mbedtls_ssl_conf_async_private_cb()) - in this case you + * must call this function again when the operation is ready. + * \return #MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS if a cryptographic + * operation is in progress (see mbedtls_ecp_set_max_ops()) - + * in this case you must call this function again to complete + * the handshake when you're done attending other tasks. + * \return Another SSL error code - in this case you must stop using + * the context (see below). + * + * \warning If this function returns something other than + * a non-negative value, + * #MBEDTLS_ERR_SSL_WANT_READ, + * #MBEDTLS_ERR_SSL_WANT_WRITE, + * #MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS or + * #MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS, + * you must stop using the SSL context for reading or writing, + * and either free it or call \c mbedtls_ssl_session_reset() + * on it before re-using it for a new connection; the current + * connection must be closed. * - * \note When this function returns MBEDTLS_ERR_SSL_WANT_WRITE/READ, + * \note When this function returns #MBEDTLS_ERR_SSL_WANT_WRITE/READ, * it must be called later with the *same* arguments, * until it returns a value greater that or equal to 0. When - * the function returns MBEDTLS_ERR_SSL_WANT_WRITE there may be + * the function returns #MBEDTLS_ERR_SSL_WANT_WRITE there may be * some partial data in the output buffer, however this is not * yet sent. * diff --git a/thirdparty/mbedtls/include/mbedtls/ssl_cookie.h b/thirdparty/mbedtls/include/mbedtls/ssl_cookie.h index 80b65bbbb9..6a0ad4fa96 100644 --- a/thirdparty/mbedtls/include/mbedtls/ssl_cookie.h +++ b/thirdparty/mbedtls/include/mbedtls/ssl_cookie.h @@ -50,7 +50,7 @@ extern "C" { /** * \brief Context for the default cookie functions. */ -typedef struct +typedef struct mbedtls_ssl_cookie_ctx { mbedtls_md_context_t hmac_ctx; /*!< context for the HMAC portion */ #if !defined(MBEDTLS_HAVE_TIME) diff --git a/thirdparty/mbedtls/include/mbedtls/ssl_internal.h b/thirdparty/mbedtls/include/mbedtls/ssl_internal.h index d214703d77..97abb9f90b 100644 --- a/thirdparty/mbedtls/include/mbedtls/ssl_internal.h +++ b/thirdparty/mbedtls/include/mbedtls/ssl_internal.h @@ -93,6 +93,14 @@ #endif /* MBEDTLS_SSL_PROTO_TLS1_1 */ #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */ +/* Shorthand for restartable ECC */ +#if defined(MBEDTLS_ECP_RESTARTABLE) && \ + defined(MBEDTLS_SSL_CLI_C) && \ + defined(MBEDTLS_SSL_PROTO_TLS1_2) && \ + defined(MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED) +#define MBEDTLS_SSL__ECP_RESTARTABLE +#endif + #define MBEDTLS_SSL_INITIAL_HANDSHAKE 0 #define MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS 1 /* In progress */ #define MBEDTLS_SSL_RENEGOTIATION_DONE 2 /* Done or aborted */ @@ -155,6 +163,9 @@ #define MBEDTLS_SSL_OUT_PAYLOAD_LEN ( MBEDTLS_SSL_PAYLOAD_OVERHEAD + \ ( MBEDTLS_SSL_OUT_CONTENT_LEN ) ) +/* The maximum number of buffered handshake messages. */ +#define MBEDTLS_SSL_MAX_BUFFERED_HS 4 + /* Maximum length we can advertise as our max content length for RFC 6066 max_fragment_length extension negotiation purposes (the lesser of both sizes, if they are unequal.) @@ -284,7 +295,18 @@ struct mbedtls_ssl_handshake_params mbedtls_x509_crl *sni_ca_crl; /*!< trusted CAs CRLs from SNI */ #endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */ #endif /* MBEDTLS_X509_CRT_PARSE_C */ - +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + int ecrs_enabled; /*!< Handshake supports EC restart? */ + mbedtls_x509_crt_restart_ctx ecrs_ctx; /*!< restart context */ + enum { /* this complements ssl->state with info on intra-state operations */ + ssl_ecrs_none = 0, /*!< nothing going on (yet) */ + ssl_ecrs_crt_verify, /*!< Certificate: crt_verify() */ + ssl_ecrs_ske_start_processing, /*!< ServerKeyExchange: pk_verify() */ + ssl_ecrs_cke_ecdh_calc_secret, /*!< ClientKeyExchange: ECDH step 2 */ + ssl_ecrs_crt_vrfy_sign, /*!< CertificateVerify: pk_sign() */ + } ecrs_state; /*!< current (or last) operation */ + size_t ecrs_n; /*!< place for saving a length */ +#endif #if defined(MBEDTLS_SSL_PROTO_DTLS) unsigned int out_msg_seq; /*!< Outgoing handshake sequence number */ unsigned int in_msg_seq; /*!< Incoming handshake sequence number */ @@ -294,18 +316,45 @@ struct mbedtls_ssl_handshake_params unsigned char verify_cookie_len; /*!< Cli: cookie length Srv: flag for sending a cookie */ - unsigned char *hs_msg; /*!< Reassembled handshake message */ - uint32_t retransmit_timeout; /*!< Current value of timeout */ unsigned char retransmit_state; /*!< Retransmission state */ - mbedtls_ssl_flight_item *flight; /*!< Current outgoing flight */ - mbedtls_ssl_flight_item *cur_msg; /*!< Current message in flight */ + mbedtls_ssl_flight_item *flight; /*!< Current outgoing flight */ + mbedtls_ssl_flight_item *cur_msg; /*!< Current message in flight */ + unsigned char *cur_msg_p; /*!< Position in current message */ unsigned int in_flight_start_seq; /*!< Minimum message sequence in the flight being received */ mbedtls_ssl_transform *alt_transform_out; /*!< Alternative transform for resending messages */ unsigned char alt_out_ctr[8]; /*!< Alternative record epoch/counter for resending messages */ + + struct + { + size_t total_bytes_buffered; /*!< Cumulative size of heap allocated + * buffers used for message buffering. */ + + uint8_t seen_ccs; /*!< Indicates if a CCS message has + * been seen in the current flight. */ + + struct mbedtls_ssl_hs_buffer + { + unsigned is_valid : 1; + unsigned is_fragmented : 1; + unsigned is_complete : 1; + unsigned char *data; + size_t data_len; + } hs[MBEDTLS_SSL_MAX_BUFFERED_HS]; + + struct + { + unsigned char *data; + size_t len; + unsigned epoch; + } future_record; + + } buffering; + + uint16_t mtu; /*!< Handshake mtu, used to fragment outgoing messages */ #endif /* MBEDTLS_SSL_PROTO_DTLS */ /* @@ -364,6 +413,8 @@ struct mbedtls_ssl_handshake_params #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */ }; +typedef struct mbedtls_ssl_hs_buffer mbedtls_ssl_hs_buffer; + /* * This structure contains a full set of runtime transform parameters * either in negotiation or active. @@ -478,7 +529,6 @@ int mbedtls_ssl_send_fatal_handshake_failure( mbedtls_ssl_context *ssl ); void mbedtls_ssl_reset_checksum( mbedtls_ssl_context *ssl ); int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl ); -int mbedtls_ssl_read_record_layer( mbedtls_ssl_context *ssl ); int mbedtls_ssl_handle_message_type( mbedtls_ssl_context *ssl ); int mbedtls_ssl_prepare_handshake_record( mbedtls_ssl_context *ssl ); void mbedtls_ssl_update_handshake_status( mbedtls_ssl_context *ssl ); @@ -490,7 +540,10 @@ void mbedtls_ssl_update_handshake_status( mbedtls_ssl_context *ssl ); * of the logic of (D)TLS from the implementation * of the secure transport. * - * \param ssl SSL context to use + * \param ssl The SSL context to use. + * \param update_hs_digest This indicates if the handshake digest + * should be automatically updated in case + * a handshake message is found. * * \return 0 or non-zero error code. * @@ -556,10 +609,12 @@ void mbedtls_ssl_update_handshake_status( mbedtls_ssl_context *ssl ); * following the above definition. * */ -int mbedtls_ssl_read_record( mbedtls_ssl_context *ssl ); +int mbedtls_ssl_read_record( mbedtls_ssl_context *ssl, + unsigned update_hs_digest ); int mbedtls_ssl_fetch_input( mbedtls_ssl_context *ssl, size_t nb_want ); -int mbedtls_ssl_write_record( mbedtls_ssl_context *ssl ); +int mbedtls_ssl_write_handshake_msg( mbedtls_ssl_context *ssl ); +int mbedtls_ssl_write_record( mbedtls_ssl_context *ssl, uint8_t force_flush ); int mbedtls_ssl_flush_output( mbedtls_ssl_context *ssl ); int mbedtls_ssl_parse_certificate( mbedtls_ssl_context *ssl ); @@ -668,6 +723,7 @@ static inline size_t mbedtls_ssl_hs_hdr_len( const mbedtls_ssl_context *ssl ) void mbedtls_ssl_send_flight_completed( mbedtls_ssl_context *ssl ); void mbedtls_ssl_recv_flight_completed( mbedtls_ssl_context *ssl ); int mbedtls_ssl_resend( mbedtls_ssl_context *ssl ); +int mbedtls_ssl_flight_transmit( mbedtls_ssl_context *ssl ); #endif /* Visible for testing purposes only */ diff --git a/thirdparty/mbedtls/include/mbedtls/ssl_ticket.h b/thirdparty/mbedtls/include/mbedtls/ssl_ticket.h index 93ad46ac9c..b2686df09f 100644 --- a/thirdparty/mbedtls/include/mbedtls/ssl_ticket.h +++ b/thirdparty/mbedtls/include/mbedtls/ssl_ticket.h @@ -44,7 +44,7 @@ extern "C" { /** * \brief Information for session ticket protection */ -typedef struct +typedef struct mbedtls_ssl_ticket_key { unsigned char name[4]; /*!< random key identifier */ uint32_t generation_time; /*!< key generation timestamp (seconds) */ @@ -55,7 +55,7 @@ mbedtls_ssl_ticket_key; /** * \brief Context for session ticket handling functions */ -typedef struct +typedef struct mbedtls_ssl_ticket_context { mbedtls_ssl_ticket_key keys[2]; /*!< ticket protection keys */ unsigned char active; /*!< index of the currently active key */ diff --git a/thirdparty/mbedtls/include/mbedtls/threading.h b/thirdparty/mbedtls/include/mbedtls/threading.h index c25daa5cdf..92e6e6b987 100644 --- a/thirdparty/mbedtls/include/mbedtls/threading.h +++ b/thirdparty/mbedtls/include/mbedtls/threading.h @@ -36,13 +36,16 @@ extern "C" { #endif +/* MBEDTLS_ERR_THREADING_FEATURE_UNAVAILABLE is deprecated and should not be + * used. */ #define MBEDTLS_ERR_THREADING_FEATURE_UNAVAILABLE -0x001A /**< The selected feature is not available. */ + #define MBEDTLS_ERR_THREADING_BAD_INPUT_DATA -0x001C /**< Bad input parameters to function. */ #define MBEDTLS_ERR_THREADING_MUTEX_ERROR -0x001E /**< Locking / unlocking / free failed with error code. */ #if defined(MBEDTLS_THREADING_PTHREAD) #include <pthread.h> -typedef struct +typedef struct mbedtls_threading_mutex_t { pthread_mutex_t mutex; char is_valid; @@ -99,6 +102,17 @@ extern int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t *mutex ); #if defined(MBEDTLS_FS_IO) extern mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex; #endif + +#if defined(MBEDTLS_HAVE_TIME_DATE) && !defined(MBEDTLS_PLATFORM_GMTIME_R_ALT) +/* This mutex may or may not be used in the default definition of + * mbedtls_platform_gmtime_r(), but in order to determine that, + * we need to check POSIX features, hence modify _POSIX_C_SOURCE. + * With the current approach, this declaration is orphaned, lacking + * an accompanying definition, in case mbedtls_platform_gmtime_r() + * doesn't need it, but that's not a problem. */ +extern mbedtls_threading_mutex_t mbedtls_threading_gmtime_mutex; +#endif /* MBEDTLS_HAVE_TIME_DATE && !MBEDTLS_PLATFORM_GMTIME_R_ALT */ + #endif /* MBEDTLS_THREADING_C */ #ifdef __cplusplus diff --git a/thirdparty/mbedtls/include/mbedtls/timing.h b/thirdparty/mbedtls/include/mbedtls/timing.h index bbcb90688a..a965fe0d35 100644 --- a/thirdparty/mbedtls/include/mbedtls/timing.h +++ b/thirdparty/mbedtls/include/mbedtls/timing.h @@ -51,7 +51,7 @@ struct mbedtls_timing_hr_time /** * \brief Context for mbedtls_timing_set/get_delay() */ -typedef struct +typedef struct mbedtls_timing_delay_context { struct mbedtls_timing_hr_time timer; uint32_t int_ms; diff --git a/thirdparty/mbedtls/include/mbedtls/version.h b/thirdparty/mbedtls/include/mbedtls/version.h index eaf25d908c..56e7398a2a 100644 --- a/thirdparty/mbedtls/include/mbedtls/version.h +++ b/thirdparty/mbedtls/include/mbedtls/version.h @@ -39,7 +39,7 @@ * Major, Minor, Patchlevel */ #define MBEDTLS_VERSION_MAJOR 2 -#define MBEDTLS_VERSION_MINOR 12 +#define MBEDTLS_VERSION_MINOR 16 #define MBEDTLS_VERSION_PATCH 0 /** @@ -47,9 +47,9 @@ * MMNNPP00 * Major version | Minor version | Patch version */ -#define MBEDTLS_VERSION_NUMBER 0x020C0000 -#define MBEDTLS_VERSION_STRING "2.12.0" -#define MBEDTLS_VERSION_STRING_FULL "mbed TLS 2.12.0" +#define MBEDTLS_VERSION_NUMBER 0x02100000 +#define MBEDTLS_VERSION_STRING "2.16.0" +#define MBEDTLS_VERSION_STRING_FULL "mbed TLS 2.16.0" #if defined(MBEDTLS_VERSION_C) diff --git a/thirdparty/mbedtls/include/mbedtls/x509_crt.h b/thirdparty/mbedtls/include/mbedtls/x509_crt.h index ac23cffe84..3dd5922486 100644 --- a/thirdparty/mbedtls/include/mbedtls/x509_crt.h +++ b/thirdparty/mbedtls/include/mbedtls/x509_crt.h @@ -105,7 +105,7 @@ mbedtls_x509_crt; * * All lists are bitfields, built by ORing flags from MBEDTLS_X509_ID_FLAG(). */ -typedef struct +typedef struct mbedtls_x509_crt_profile { uint32_t allowed_mds; /**< MDs for signatures */ uint32_t allowed_pks; /**< PK algs for signatures */ @@ -143,6 +143,63 @@ typedef struct mbedtls_x509write_cert } mbedtls_x509write_cert; +/** + * Item in a verification chain: cert and flags for it + */ +typedef struct { + mbedtls_x509_crt *crt; + uint32_t flags; +} mbedtls_x509_crt_verify_chain_item; + +/** + * Max size of verification chain: end-entity + intermediates + trusted root + */ +#define MBEDTLS_X509_MAX_VERIFY_CHAIN_SIZE ( MBEDTLS_X509_MAX_INTERMEDIATE_CA + 2 ) + +/** + * Verification chain as built by \c mbedtls_crt_verify_chain() + */ +typedef struct +{ + mbedtls_x509_crt_verify_chain_item items[MBEDTLS_X509_MAX_VERIFY_CHAIN_SIZE]; + unsigned len; +} mbedtls_x509_crt_verify_chain; + +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + +/** + * \brief Context for resuming X.509 verify operations + */ +typedef struct +{ + /* for check_signature() */ + mbedtls_pk_restart_ctx pk; + + /* for find_parent_in() */ + mbedtls_x509_crt *parent; /* non-null iff parent_in in progress */ + mbedtls_x509_crt *fallback_parent; + int fallback_signature_is_good; + + /* for find_parent() */ + int parent_is_trusted; /* -1 if find_parent is not in progress */ + + /* for verify_chain() */ + enum { + x509_crt_rs_none, + x509_crt_rs_find_parent, + } in_progress; /* none if no operation is in progress */ + int self_cnt; + mbedtls_x509_crt_verify_chain ver_chain; + +} mbedtls_x509_crt_restart_ctx; + +#else /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ + +/* Now we can declare functions that take a pointer to that */ +typedef void mbedtls_x509_crt_restart_ctx; + +#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ + #if defined(MBEDTLS_X509_CRT_PARSE_C) /** * Default security profile. Should provide a good balance between security @@ -175,19 +232,34 @@ int mbedtls_x509_crt_parse_der( mbedtls_x509_crt *chain, const unsigned char *bu size_t buflen ); /** - * \brief Parse one or more certificates and add them - * to the chained list. Parses permissively. If some - * certificates can be parsed, the result is the number - * of failed certificates it encountered. If none complete - * correctly, the first error is returned. + * \brief Parse one DER-encoded or one or more concatenated PEM-encoded + * certificates and add them to the chained list. * - * \param chain points to the start of the chain - * \param buf buffer holding the certificate data in PEM or DER format - * \param buflen size of the buffer - * (including the terminating null byte for PEM data) + * For CRTs in PEM encoding, the function parses permissively: + * if at least one certificate can be parsed, the function + * returns the number of certificates for which parsing failed + * (hence \c 0 if all certificates were parsed successfully). + * If no certificate could be parsed, the function returns + * the first (negative) error encountered during parsing. + * + * PEM encoded certificates may be interleaved by other data + * such as human readable descriptions of their content, as + * long as the certificates are enclosed in the PEM specific + * '-----{BEGIN/END} CERTIFICATE-----' delimiters. + * + * \param chain The chain to which to add the parsed certificates. + * \param buf The buffer holding the certificate data in PEM or DER format. + * For certificates in PEM encoding, this may be a concatenation + * of multiple certificates; for DER encoding, the buffer must + * comprise exactly one certificate. + * \param buflen The size of \p buf, including the terminating \c NULL byte + * in case of PEM encoded data. + * + * \return \c 0 if all certificates were parsed successfully. + * \return The (positive) number of certificates that couldn't + * be parsed if parsing was partly successful (see above). + * \return A negative X509 or PEM error code otherwise. * - * \return 0 if all certificates parsed successfully, a positive number - * if partly successful or a specific X509 or PEM error code */ int mbedtls_x509_crt_parse( mbedtls_x509_crt *chain, const unsigned char *buf, size_t buflen ); @@ -353,6 +425,37 @@ int mbedtls_x509_crt_verify_with_profile( mbedtls_x509_crt *crt, int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *), void *p_vrfy ); +/** + * \brief Restartable version of \c mbedtls_crt_verify_with_profile() + * + * \note Performs the same job as \c mbedtls_crt_verify_with_profile() + * but can return early and restart according to the limit + * set with \c mbedtls_ecp_set_max_ops() to reduce blocking. + * + * \param crt a certificate (chain) to be verified + * \param trust_ca the list of trusted CAs + * \param ca_crl the list of CRLs for trusted CAs + * \param profile security profile for verification + * \param cn expected Common Name (can be set to + * NULL if the CN must not be verified) + * \param flags result of the verification + * \param f_vrfy verification function + * \param p_vrfy verification parameter + * \param rs_ctx restart context (NULL to disable restart) + * + * \return See \c mbedtls_crt_verify_with_profile(), or + * \return #MBEDTLS_ERR_ECP_IN_PROGRESS if maximum number of + * operations was reached: see \c mbedtls_ecp_set_max_ops(). + */ +int mbedtls_x509_crt_verify_restartable( mbedtls_x509_crt *crt, + mbedtls_x509_crt *trust_ca, + mbedtls_x509_crl *ca_crl, + const mbedtls_x509_crt_profile *profile, + const char *cn, uint32_t *flags, + int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *), + void *p_vrfy, + mbedtls_x509_crt_restart_ctx *rs_ctx ); + #if defined(MBEDTLS_X509_CHECK_KEY_USAGE) /** * \brief Check usage of certificate against keyUsage extension. @@ -424,6 +527,18 @@ void mbedtls_x509_crt_init( mbedtls_x509_crt *crt ); * \param crt Certificate chain to free */ void mbedtls_x509_crt_free( mbedtls_x509_crt *crt ); + +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) +/** + * \brief Initialize a restart context + */ +void mbedtls_x509_crt_restart_init( mbedtls_x509_crt_restart_ctx *ctx ); + +/** + * \brief Free the components of a restart context + */ +void mbedtls_x509_crt_restart_free( mbedtls_x509_crt_restart_ctx *ctx ); +#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ #endif /* MBEDTLS_X509_CRT_PARSE_C */ /* \} name */ diff --git a/thirdparty/mbedtls/include/mbedtls/xtea.h b/thirdparty/mbedtls/include/mbedtls/xtea.h index 8df708a3a5..6430c1318a 100644 --- a/thirdparty/mbedtls/include/mbedtls/xtea.h +++ b/thirdparty/mbedtls/include/mbedtls/xtea.h @@ -37,6 +37,8 @@ #define MBEDTLS_XTEA_DECRYPT 0 #define MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH -0x0028 /**< The data input has an invalid length. */ + +/* MBEDTLS_ERR_XTEA_HW_ACCEL_FAILED is deprecated and should not be used. */ #define MBEDTLS_ERR_XTEA_HW_ACCEL_FAILED -0x0029 /**< XTEA hardware accelerator failed. */ #ifdef __cplusplus @@ -50,7 +52,7 @@ extern "C" { /** * \brief XTEA context structure */ -typedef struct +typedef struct mbedtls_xtea_context { uint32_t k[4]; /*!< key */ } diff --git a/thirdparty/mbedtls/library/aes.c b/thirdparty/mbedtls/library/aes.c index 5c939bba47..0543cd7817 100644 --- a/thirdparty/mbedtls/library/aes.c +++ b/thirdparty/mbedtls/library/aes.c @@ -36,6 +36,7 @@ #include <string.h> #include "mbedtls/aes.h" +#include "mbedtls/platform.h" #include "mbedtls/platform_util.h" #if defined(MBEDTLS_PADLOCK_C) #include "mbedtls/padlock.h" @@ -55,6 +56,12 @@ #if !defined(MBEDTLS_AES_ALT) +/* Parameter validation macros based on platform_util.h */ +#define AES_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_AES_BAD_INPUT_DATA ) +#define AES_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + /* * 32-bit integer manipulation macros (little endian) */ @@ -510,6 +517,8 @@ static void aes_gen_tables( void ) void mbedtls_aes_init( mbedtls_aes_context *ctx ) { + AES_VALIDATE( ctx != NULL ); + memset( ctx, 0, sizeof( mbedtls_aes_context ) ); } @@ -524,12 +533,17 @@ void mbedtls_aes_free( mbedtls_aes_context *ctx ) #if defined(MBEDTLS_CIPHER_MODE_XTS) void mbedtls_aes_xts_init( mbedtls_aes_xts_context *ctx ) { + AES_VALIDATE( ctx != NULL ); + mbedtls_aes_init( &ctx->crypt ); mbedtls_aes_init( &ctx->tweak ); } void mbedtls_aes_xts_free( mbedtls_aes_xts_context *ctx ) { + if( ctx == NULL ) + return; + mbedtls_aes_free( &ctx->crypt ); mbedtls_aes_free( &ctx->tweak ); } @@ -545,14 +559,8 @@ int mbedtls_aes_setkey_enc( mbedtls_aes_context *ctx, const unsigned char *key, unsigned int i; uint32_t *RK; -#if !defined(MBEDTLS_AES_ROM_TABLES) - if( aes_init_done == 0 ) - { - aes_gen_tables(); - aes_init_done = 1; - - } -#endif + AES_VALIDATE_RET( ctx != NULL ); + AES_VALIDATE_RET( key != NULL ); switch( keybits ) { @@ -562,6 +570,14 @@ int mbedtls_aes_setkey_enc( mbedtls_aes_context *ctx, const unsigned char *key, default : return( MBEDTLS_ERR_AES_INVALID_KEY_LENGTH ); } +#if !defined(MBEDTLS_AES_ROM_TABLES) + if( aes_init_done == 0 ) + { + aes_gen_tables(); + aes_init_done = 1; + } +#endif + #if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_PADLOCK_ALIGN16) if( aes_padlock_ace == -1 ) aes_padlock_ace = mbedtls_padlock_has_support( MBEDTLS_PADLOCK_ACE ); @@ -661,6 +677,9 @@ int mbedtls_aes_setkey_dec( mbedtls_aes_context *ctx, const unsigned char *key, uint32_t *RK; uint32_t *SK; + AES_VALIDATE_RET( ctx != NULL ); + AES_VALIDATE_RET( key != NULL ); + mbedtls_aes_init( &cty ); #if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_PADLOCK_ALIGN16) @@ -751,6 +770,9 @@ int mbedtls_aes_xts_setkey_enc( mbedtls_aes_xts_context *ctx, const unsigned char *key1, *key2; unsigned int key1bits, key2bits; + AES_VALIDATE_RET( ctx != NULL ); + AES_VALIDATE_RET( key != NULL ); + ret = mbedtls_aes_xts_decode_keys( key, keybits, &key1, &key1bits, &key2, &key2bits ); if( ret != 0 ) @@ -773,6 +795,9 @@ int mbedtls_aes_xts_setkey_dec( mbedtls_aes_xts_context *ctx, const unsigned char *key1, *key2; unsigned int key1bits, key2bits; + AES_VALIDATE_RET( ctx != NULL ); + AES_VALIDATE_RET( key != NULL ); + ret = mbedtls_aes_xts_decode_keys( key, keybits, &key1, &key1bits, &key2, &key2bits ); if( ret != 0 ) @@ -976,10 +1001,16 @@ void mbedtls_aes_decrypt( mbedtls_aes_context *ctx, * AES-ECB block encryption/decryption */ int mbedtls_aes_crypt_ecb( mbedtls_aes_context *ctx, - int mode, - const unsigned char input[16], - unsigned char output[16] ) + int mode, + const unsigned char input[16], + unsigned char output[16] ) { + AES_VALIDATE_RET( ctx != NULL ); + AES_VALIDATE_RET( input != NULL ); + AES_VALIDATE_RET( output != NULL ); + AES_VALIDATE_RET( mode == MBEDTLS_AES_ENCRYPT || + mode == MBEDTLS_AES_DECRYPT ); + #if defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64) if( mbedtls_aesni_has_support( MBEDTLS_AESNI_AES ) ) return( mbedtls_aesni_crypt_ecb( ctx, mode, input, output ) ); @@ -1017,6 +1048,13 @@ int mbedtls_aes_crypt_cbc( mbedtls_aes_context *ctx, int i; unsigned char temp[16]; + AES_VALIDATE_RET( ctx != NULL ); + AES_VALIDATE_RET( mode == MBEDTLS_AES_ENCRYPT || + mode == MBEDTLS_AES_DECRYPT ); + AES_VALIDATE_RET( iv != NULL ); + AES_VALIDATE_RET( input != NULL ); + AES_VALIDATE_RET( output != NULL ); + if( length % 16 ) return( MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH ); @@ -1142,11 +1180,18 @@ int mbedtls_aes_crypt_xts( mbedtls_aes_xts_context *ctx, unsigned char prev_tweak[16]; unsigned char tmp[16]; - /* Sectors must be at least 16 bytes. */ + AES_VALIDATE_RET( ctx != NULL ); + AES_VALIDATE_RET( mode == MBEDTLS_AES_ENCRYPT || + mode == MBEDTLS_AES_DECRYPT ); + AES_VALIDATE_RET( data_unit != NULL ); + AES_VALIDATE_RET( input != NULL ); + AES_VALIDATE_RET( output != NULL ); + + /* Data units must be at least 16 bytes long. */ if( length < 16 ) return MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH; - /* NIST SP 80-38E disallows data units larger than 2**20 blocks. */ + /* NIST SP 800-38E disallows data units larger than 2**20 blocks. */ if( length > ( 1 << 20 ) * 16 ) return MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH; @@ -1241,7 +1286,20 @@ int mbedtls_aes_crypt_cfb128( mbedtls_aes_context *ctx, unsigned char *output ) { int c; - size_t n = *iv_off; + size_t n; + + AES_VALIDATE_RET( ctx != NULL ); + AES_VALIDATE_RET( mode == MBEDTLS_AES_ENCRYPT || + mode == MBEDTLS_AES_DECRYPT ); + AES_VALIDATE_RET( iv_off != NULL ); + AES_VALIDATE_RET( iv != NULL ); + AES_VALIDATE_RET( input != NULL ); + AES_VALIDATE_RET( output != NULL ); + + n = *iv_off; + + if( n > 15 ) + return( MBEDTLS_ERR_AES_BAD_INPUT_DATA ); if( mode == MBEDTLS_AES_DECRYPT ) { @@ -1279,15 +1337,21 @@ int mbedtls_aes_crypt_cfb128( mbedtls_aes_context *ctx, * AES-CFB8 buffer encryption/decryption */ int mbedtls_aes_crypt_cfb8( mbedtls_aes_context *ctx, - int mode, - size_t length, - unsigned char iv[16], - const unsigned char *input, - unsigned char *output ) + int mode, + size_t length, + unsigned char iv[16], + const unsigned char *input, + unsigned char *output ) { unsigned char c; unsigned char ov[17]; + AES_VALIDATE_RET( ctx != NULL ); + AES_VALIDATE_RET( mode == MBEDTLS_AES_ENCRYPT || + mode == MBEDTLS_AES_DECRYPT ); + AES_VALIDATE_RET( iv != NULL ); + AES_VALIDATE_RET( input != NULL ); + AES_VALIDATE_RET( output != NULL ); while( length-- ) { memcpy( ov, iv, 16 ); @@ -1320,7 +1384,18 @@ int mbedtls_aes_crypt_ofb( mbedtls_aes_context *ctx, unsigned char *output ) { int ret = 0; - size_t n = *iv_off; + size_t n; + + AES_VALIDATE_RET( ctx != NULL ); + AES_VALIDATE_RET( iv_off != NULL ); + AES_VALIDATE_RET( iv != NULL ); + AES_VALIDATE_RET( input != NULL ); + AES_VALIDATE_RET( output != NULL ); + + n = *iv_off; + + if( n > 15 ) + return( MBEDTLS_ERR_AES_BAD_INPUT_DATA ); while( length-- ) { @@ -1355,7 +1430,16 @@ int mbedtls_aes_crypt_ctr( mbedtls_aes_context *ctx, unsigned char *output ) { int c, i; - size_t n = *nc_off; + size_t n; + + AES_VALIDATE_RET( ctx != NULL ); + AES_VALIDATE_RET( nc_off != NULL ); + AES_VALIDATE_RET( nonce_counter != NULL ); + AES_VALIDATE_RET( stream_block != NULL ); + AES_VALIDATE_RET( input != NULL ); + AES_VALIDATE_RET( output != NULL ); + + n = *nc_off; if ( n > 0x0F ) return( MBEDTLS_ERR_AES_BAD_INPUT_DATA ); @@ -1757,7 +1841,7 @@ int mbedtls_aes_self_test( int verbose ) * there is an alternative underlying implementation i.e. when * MBEDTLS_AES_ALT is defined. */ - if( ret == MBEDTLS_ERR_AES_FEATURE_UNAVAILABLE && keybits == 192 ) + if( ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED && keybits == 192 ) { mbedtls_printf( "skipped\n" ); continue; @@ -1821,7 +1905,7 @@ int mbedtls_aes_self_test( int verbose ) * there is an alternative underlying implementation i.e. when * MBEDTLS_AES_ALT is defined. */ - if( ret == MBEDTLS_ERR_AES_FEATURE_UNAVAILABLE && keybits == 192 ) + if( ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED && keybits == 192 ) { mbedtls_printf( "skipped\n" ); continue; @@ -1886,7 +1970,7 @@ int mbedtls_aes_self_test( int verbose ) * there is an alternative underlying implementation i.e. when * MBEDTLS_AES_ALT is defined. */ - if( ret == MBEDTLS_ERR_AES_FEATURE_UNAVAILABLE && keybits == 192 ) + if( ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED && keybits == 192 ) { mbedtls_printf( "skipped\n" ); continue; @@ -1949,7 +2033,7 @@ int mbedtls_aes_self_test( int verbose ) * there is an alternative underlying implementation i.e. when * MBEDTLS_AES_ALT is defined. */ - if( ret == MBEDTLS_ERR_AES_FEATURE_UNAVAILABLE && keybits == 192 ) + if( ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED && keybits == 192 ) { mbedtls_printf( "skipped\n" ); continue; diff --git a/thirdparty/mbedtls/library/aria.c b/thirdparty/mbedtls/library/aria.c index e9bcd6d135..aff66d667f 100644 --- a/thirdparty/mbedtls/library/aria.c +++ b/thirdparty/mbedtls/library/aria.c @@ -55,6 +55,12 @@ #define inline __inline #endif +/* Parameter validation macros */ +#define ARIA_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_ARIA_BAD_INPUT_DATA ) +#define ARIA_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + /* * 32-bit integer manipulation macros (little endian) */ @@ -449,9 +455,11 @@ int mbedtls_aria_setkey_enc( mbedtls_aria_context *ctx, int i; uint32_t w[4][4], *w2; + ARIA_VALIDATE_RET( ctx != NULL ); + ARIA_VALIDATE_RET( key != NULL ); if( keybits != 128 && keybits != 192 && keybits != 256 ) - return( MBEDTLS_ERR_ARIA_INVALID_KEY_LENGTH ); + return( MBEDTLS_ERR_ARIA_BAD_INPUT_DATA ); /* Copy key to W0 (and potential remainder to W1) */ GET_UINT32_LE( w[0][0], key, 0 ); @@ -503,6 +511,8 @@ int mbedtls_aria_setkey_dec( mbedtls_aria_context *ctx, const unsigned char *key, unsigned int keybits ) { int i, j, k, ret; + ARIA_VALIDATE_RET( ctx != NULL ); + ARIA_VALIDATE_RET( key != NULL ); ret = mbedtls_aria_setkey_enc( ctx, key, keybits ); if( ret != 0 ) @@ -539,6 +549,9 @@ int mbedtls_aria_crypt_ecb( mbedtls_aria_context *ctx, int i; uint32_t a, b, c, d; + ARIA_VALIDATE_RET( ctx != NULL ); + ARIA_VALIDATE_RET( input != NULL ); + ARIA_VALIDATE_RET( output != NULL ); GET_UINT32_LE( a, input, 0 ); GET_UINT32_LE( b, input, 4 ); @@ -586,6 +599,7 @@ int mbedtls_aria_crypt_ecb( mbedtls_aria_context *ctx, /* Initialize context */ void mbedtls_aria_init( mbedtls_aria_context *ctx ) { + ARIA_VALIDATE( ctx != NULL ); memset( ctx, 0, sizeof( mbedtls_aria_context ) ); } @@ -612,6 +626,13 @@ int mbedtls_aria_crypt_cbc( mbedtls_aria_context *ctx, int i; unsigned char temp[MBEDTLS_ARIA_BLOCKSIZE]; + ARIA_VALIDATE_RET( ctx != NULL ); + ARIA_VALIDATE_RET( mode == MBEDTLS_ARIA_ENCRYPT || + mode == MBEDTLS_ARIA_DECRYPT ); + ARIA_VALIDATE_RET( length == 0 || input != NULL ); + ARIA_VALIDATE_RET( length == 0 || output != NULL ); + ARIA_VALIDATE_RET( iv != NULL ); + if( length % MBEDTLS_ARIA_BLOCKSIZE ) return( MBEDTLS_ERR_ARIA_INVALID_INPUT_LENGTH ); @@ -665,7 +686,23 @@ int mbedtls_aria_crypt_cfb128( mbedtls_aria_context *ctx, unsigned char *output ) { unsigned char c; - size_t n = *iv_off; + size_t n; + + ARIA_VALIDATE_RET( ctx != NULL ); + ARIA_VALIDATE_RET( mode == MBEDTLS_ARIA_ENCRYPT || + mode == MBEDTLS_ARIA_DECRYPT ); + ARIA_VALIDATE_RET( length == 0 || input != NULL ); + ARIA_VALIDATE_RET( length == 0 || output != NULL ); + ARIA_VALIDATE_RET( iv != NULL ); + ARIA_VALIDATE_RET( iv_off != NULL ); + + n = *iv_off; + + /* An overly large value of n can lead to an unlimited + * buffer overflow. Therefore, guard against this + * outside of parameter validation. */ + if( n >= MBEDTLS_ARIA_BLOCKSIZE ) + return( MBEDTLS_ERR_ARIA_BAD_INPUT_DATA ); if( mode == MBEDTLS_ARIA_DECRYPT ) { @@ -713,7 +750,21 @@ int mbedtls_aria_crypt_ctr( mbedtls_aria_context *ctx, unsigned char *output ) { int c, i; - size_t n = *nc_off; + size_t n; + + ARIA_VALIDATE_RET( ctx != NULL ); + ARIA_VALIDATE_RET( length == 0 || input != NULL ); + ARIA_VALIDATE_RET( length == 0 || output != NULL ); + ARIA_VALIDATE_RET( nonce_counter != NULL ); + ARIA_VALIDATE_RET( stream_block != NULL ); + ARIA_VALIDATE_RET( nc_off != NULL ); + + n = *nc_off; + /* An overly large value of n can lead to an unlimited + * buffer overflow. Therefore, guard against this + * outside of parameter validation. */ + if( n >= MBEDTLS_ARIA_BLOCKSIZE ) + return( MBEDTLS_ERR_ARIA_BAD_INPUT_DATA ); while( length-- ) { @@ -875,11 +926,11 @@ static const uint8_t aria_test2_ctr_ct[3][48] = // CTR ciphertext #define ARIA_SELF_TEST_IF_FAIL \ { \ if( verbose ) \ - printf( "failed\n" ); \ + mbedtls_printf( "failed\n" ); \ return( 1 ); \ } else { \ if( verbose ) \ - printf( "passed\n" ); \ + mbedtls_printf( "passed\n" ); \ } /* @@ -908,7 +959,7 @@ int mbedtls_aria_self_test( int verbose ) { /* test ECB encryption */ if( verbose ) - printf( " ARIA-ECB-%d (enc): ", 128 + 64 * i ); + mbedtls_printf( " ARIA-ECB-%d (enc): ", 128 + 64 * i ); mbedtls_aria_setkey_enc( &ctx, aria_test1_ecb_key, 128 + 64 * i ); mbedtls_aria_crypt_ecb( &ctx, aria_test1_ecb_pt, blk ); if( memcmp( blk, aria_test1_ecb_ct[i], MBEDTLS_ARIA_BLOCKSIZE ) != 0 ) @@ -916,14 +967,14 @@ int mbedtls_aria_self_test( int verbose ) /* test ECB decryption */ if( verbose ) - printf( " ARIA-ECB-%d (dec): ", 128 + 64 * i ); + mbedtls_printf( " ARIA-ECB-%d (dec): ", 128 + 64 * i ); mbedtls_aria_setkey_dec( &ctx, aria_test1_ecb_key, 128 + 64 * i ); mbedtls_aria_crypt_ecb( &ctx, aria_test1_ecb_ct[i], blk ); if( memcmp( blk, aria_test1_ecb_pt, MBEDTLS_ARIA_BLOCKSIZE ) != 0 ) ARIA_SELF_TEST_IF_FAIL; } if( verbose ) - printf( "\n" ); + mbedtls_printf( "\n" ); /* * Test set 2 @@ -933,7 +984,7 @@ int mbedtls_aria_self_test( int verbose ) { /* Test CBC encryption */ if( verbose ) - printf( " ARIA-CBC-%d (enc): ", 128 + 64 * i ); + mbedtls_printf( " ARIA-CBC-%d (enc): ", 128 + 64 * i ); mbedtls_aria_setkey_enc( &ctx, aria_test2_key, 128 + 64 * i ); memcpy( iv, aria_test2_iv, MBEDTLS_ARIA_BLOCKSIZE ); memset( buf, 0x55, sizeof( buf ) ); @@ -944,7 +995,7 @@ int mbedtls_aria_self_test( int verbose ) /* Test CBC decryption */ if( verbose ) - printf( " ARIA-CBC-%d (dec): ", 128 + 64 * i ); + mbedtls_printf( " ARIA-CBC-%d (dec): ", 128 + 64 * i ); mbedtls_aria_setkey_dec( &ctx, aria_test2_key, 128 + 64 * i ); memcpy( iv, aria_test2_iv, MBEDTLS_ARIA_BLOCKSIZE ); memset( buf, 0xAA, sizeof( buf ) ); @@ -954,7 +1005,7 @@ int mbedtls_aria_self_test( int verbose ) ARIA_SELF_TEST_IF_FAIL; } if( verbose ) - printf( "\n" ); + mbedtls_printf( "\n" ); #endif /* MBEDTLS_CIPHER_MODE_CBC */ @@ -963,7 +1014,7 @@ int mbedtls_aria_self_test( int verbose ) { /* Test CFB encryption */ if( verbose ) - printf( " ARIA-CFB-%d (enc): ", 128 + 64 * i ); + mbedtls_printf( " ARIA-CFB-%d (enc): ", 128 + 64 * i ); mbedtls_aria_setkey_enc( &ctx, aria_test2_key, 128 + 64 * i ); memcpy( iv, aria_test2_iv, MBEDTLS_ARIA_BLOCKSIZE ); memset( buf, 0x55, sizeof( buf ) ); @@ -975,7 +1026,7 @@ int mbedtls_aria_self_test( int verbose ) /* Test CFB decryption */ if( verbose ) - printf( " ARIA-CFB-%d (dec): ", 128 + 64 * i ); + mbedtls_printf( " ARIA-CFB-%d (dec): ", 128 + 64 * i ); mbedtls_aria_setkey_enc( &ctx, aria_test2_key, 128 + 64 * i ); memcpy( iv, aria_test2_iv, MBEDTLS_ARIA_BLOCKSIZE ); memset( buf, 0xAA, sizeof( buf ) ); @@ -986,7 +1037,7 @@ int mbedtls_aria_self_test( int verbose ) ARIA_SELF_TEST_IF_FAIL; } if( verbose ) - printf( "\n" ); + mbedtls_printf( "\n" ); #endif /* MBEDTLS_CIPHER_MODE_CFB */ #if defined(MBEDTLS_CIPHER_MODE_CTR) @@ -994,7 +1045,7 @@ int mbedtls_aria_self_test( int verbose ) { /* Test CTR encryption */ if( verbose ) - printf( " ARIA-CTR-%d (enc): ", 128 + 64 * i ); + mbedtls_printf( " ARIA-CTR-%d (enc): ", 128 + 64 * i ); mbedtls_aria_setkey_enc( &ctx, aria_test2_key, 128 + 64 * i ); memset( iv, 0, MBEDTLS_ARIA_BLOCKSIZE ); // IV = 0 memset( buf, 0x55, sizeof( buf ) ); @@ -1006,7 +1057,7 @@ int mbedtls_aria_self_test( int verbose ) /* Test CTR decryption */ if( verbose ) - printf( " ARIA-CTR-%d (dec): ", 128 + 64 * i ); + mbedtls_printf( " ARIA-CTR-%d (dec): ", 128 + 64 * i ); mbedtls_aria_setkey_enc( &ctx, aria_test2_key, 128 + 64 * i ); memset( iv, 0, MBEDTLS_ARIA_BLOCKSIZE ); // IV = 0 memset( buf, 0xAA, sizeof( buf ) ); @@ -1017,7 +1068,7 @@ int mbedtls_aria_self_test( int verbose ) ARIA_SELF_TEST_IF_FAIL; } if( verbose ) - printf( "\n" ); + mbedtls_printf( "\n" ); #endif /* MBEDTLS_CIPHER_MODE_CTR */ return( 0 ); diff --git a/thirdparty/mbedtls/library/asn1write.c b/thirdparty/mbedtls/library/asn1write.c index 72acdf3012..a4d23f6196 100644 --- a/thirdparty/mbedtls/library/asn1write.c +++ b/thirdparty/mbedtls/library/asn1write.c @@ -257,34 +257,37 @@ int mbedtls_asn1_write_int( unsigned char **p, unsigned char *start, int val ) return( (int) len ); } -int mbedtls_asn1_write_printable_string( unsigned char **p, unsigned char *start, - const char *text, size_t text_len ) +int mbedtls_asn1_write_tagged_string( unsigned char **p, unsigned char *start, int tag, + const char *text, size_t text_len ) { int ret; size_t len = 0; MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( p, start, - (const unsigned char *) text, text_len ) ); + (const unsigned char *) text, text_len ) ); MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_PRINTABLE_STRING ) ); + MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, tag ) ); return( (int) len ); } -int mbedtls_asn1_write_ia5_string( unsigned char **p, unsigned char *start, - const char *text, size_t text_len ) +int mbedtls_asn1_write_utf8_string( unsigned char **p, unsigned char *start, + const char *text, size_t text_len ) { - int ret; - size_t len = 0; - - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( p, start, - (const unsigned char *) text, text_len ) ); + return( mbedtls_asn1_write_tagged_string(p, start, MBEDTLS_ASN1_UTF8_STRING, text, text_len) ); +} - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_IA5_STRING ) ); +int mbedtls_asn1_write_printable_string( unsigned char **p, unsigned char *start, + const char *text, size_t text_len ) +{ + return( mbedtls_asn1_write_tagged_string(p, start, MBEDTLS_ASN1_PRINTABLE_STRING, text, text_len) ); +} - return( (int) len ); +int mbedtls_asn1_write_ia5_string( unsigned char **p, unsigned char *start, + const char *text, size_t text_len ) +{ + return( mbedtls_asn1_write_tagged_string(p, start, MBEDTLS_ASN1_IA5_STRING, text, text_len) ); } int mbedtls_asn1_write_bitstring( unsigned char **p, unsigned char *start, @@ -328,14 +331,36 @@ int mbedtls_asn1_write_octet_string( unsigned char **p, unsigned char *start, return( (int) len ); } -mbedtls_asn1_named_data *mbedtls_asn1_store_named_data( mbedtls_asn1_named_data **head, + +/* This is a copy of the ASN.1 parsing function mbedtls_asn1_find_named_data(), + * which is replicated to avoid a dependency ASN1_WRITE_C on ASN1_PARSE_C. */ +static mbedtls_asn1_named_data *asn1_find_named_data( + mbedtls_asn1_named_data *list, + const char *oid, size_t len ) +{ + while( list != NULL ) + { + if( list->oid.len == len && + memcmp( list->oid.p, oid, len ) == 0 ) + { + break; + } + + list = list->next; + } + + return( list ); +} + +mbedtls_asn1_named_data *mbedtls_asn1_store_named_data( + mbedtls_asn1_named_data **head, const char *oid, size_t oid_len, const unsigned char *val, size_t val_len ) { mbedtls_asn1_named_data *cur; - if( ( cur = mbedtls_asn1_find_named_data( *head, oid, oid_len ) ) == NULL ) + if( ( cur = asn1_find_named_data( *head, oid, oid_len ) ) == NULL ) { // Add new entry if not present yet based on OID // diff --git a/thirdparty/mbedtls/library/bignum.c b/thirdparty/mbedtls/library/bignum.c index 423e375fd1..f968a0ad7d 100644 --- a/thirdparty/mbedtls/library/bignum.c +++ b/thirdparty/mbedtls/library/bignum.c @@ -59,6 +59,11 @@ #define mbedtls_free free #endif +#define MPI_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_MPI_BAD_INPUT_DATA ) +#define MPI_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + #define ciL (sizeof(mbedtls_mpi_uint)) /* chars in limb */ #define biL (ciL << 3) /* bits in limb */ #define biH (ciL << 2) /* half limb size */ @@ -83,8 +88,7 @@ static void mbedtls_mpi_zeroize( mbedtls_mpi_uint *v, size_t n ) */ void mbedtls_mpi_init( mbedtls_mpi *X ) { - if( X == NULL ) - return; + MPI_VALIDATE( X != NULL ); X->s = 1; X->n = 0; @@ -116,6 +120,7 @@ void mbedtls_mpi_free( mbedtls_mpi *X ) int mbedtls_mpi_grow( mbedtls_mpi *X, size_t nblimbs ) { mbedtls_mpi_uint *p; + MPI_VALIDATE_RET( X != NULL ); if( nblimbs > MBEDTLS_MPI_MAX_LIMBS ) return( MBEDTLS_ERR_MPI_ALLOC_FAILED ); @@ -147,6 +152,10 @@ int mbedtls_mpi_shrink( mbedtls_mpi *X, size_t nblimbs ) { mbedtls_mpi_uint *p; size_t i; + MPI_VALIDATE_RET( X != NULL ); + + if( nblimbs > MBEDTLS_MPI_MAX_LIMBS ) + return( MBEDTLS_ERR_MPI_ALLOC_FAILED ); /* Actually resize up in this case */ if( X->n <= nblimbs ) @@ -183,6 +192,8 @@ int mbedtls_mpi_copy( mbedtls_mpi *X, const mbedtls_mpi *Y ) { int ret = 0; size_t i; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( Y != NULL ); if( X == Y ) return( 0 ); @@ -222,6 +233,8 @@ cleanup: void mbedtls_mpi_swap( mbedtls_mpi *X, mbedtls_mpi *Y ) { mbedtls_mpi T; + MPI_VALIDATE( X != NULL ); + MPI_VALIDATE( Y != NULL ); memcpy( &T, X, sizeof( mbedtls_mpi ) ); memcpy( X, Y, sizeof( mbedtls_mpi ) ); @@ -237,6 +250,8 @@ int mbedtls_mpi_safe_cond_assign( mbedtls_mpi *X, const mbedtls_mpi *Y, unsigned { int ret = 0; size_t i; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( Y != NULL ); /* make sure assign is 0 or 1 in a time-constant manner */ assign = (assign | (unsigned char)-assign) >> 7; @@ -266,6 +281,8 @@ int mbedtls_mpi_safe_cond_swap( mbedtls_mpi *X, mbedtls_mpi *Y, unsigned char sw int ret, s; size_t i; mbedtls_mpi_uint tmp; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( Y != NULL ); if( X == Y ) return( 0 ); @@ -298,6 +315,7 @@ cleanup: int mbedtls_mpi_lset( mbedtls_mpi *X, mbedtls_mpi_sint z ) { int ret; + MPI_VALIDATE_RET( X != NULL ); MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, 1 ) ); memset( X->p, 0, X->n * ciL ); @@ -315,12 +333,18 @@ cleanup: */ int mbedtls_mpi_get_bit( const mbedtls_mpi *X, size_t pos ) { + MPI_VALIDATE_RET( X != NULL ); + if( X->n * biL <= pos ) return( 0 ); return( ( X->p[pos / biL] >> ( pos % biL ) ) & 0x01 ); } +/* Get a specific byte, without range checks. */ +#define GET_BYTE( X, i ) \ + ( ( ( X )->p[( i ) / ciL] >> ( ( ( i ) % ciL ) * 8 ) ) & 0xff ) + /* * Set a bit to a specific value of 0 or 1 */ @@ -329,6 +353,7 @@ int mbedtls_mpi_set_bit( mbedtls_mpi *X, size_t pos, unsigned char val ) int ret = 0; size_t off = pos / biL; size_t idx = pos % biL; + MPI_VALIDATE_RET( X != NULL ); if( val != 0 && val != 1 ) return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA ); @@ -355,6 +380,7 @@ cleanup: size_t mbedtls_mpi_lsb( const mbedtls_mpi *X ) { size_t i, j, count = 0; + MBEDTLS_INTERNAL_VALIDATE_RET( X != NULL, 0 ); for( i = 0; i < X->n; i++ ) for( j = 0; j < biL; j++, count++ ) @@ -435,6 +461,8 @@ int mbedtls_mpi_read_string( mbedtls_mpi *X, int radix, const char *s ) size_t i, j, slen, n; mbedtls_mpi_uint d; mbedtls_mpi T; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( s != NULL ); if( radix < 2 || radix > 16 ) return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA ); @@ -535,6 +563,9 @@ int mbedtls_mpi_write_string( const mbedtls_mpi *X, int radix, size_t n; char *p; mbedtls_mpi T; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( olen != NULL ); + MPI_VALIDATE_RET( buflen == 0 || buf != NULL ); if( radix < 2 || radix > 16 ) return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA ); @@ -616,6 +647,12 @@ int mbedtls_mpi_read_file( mbedtls_mpi *X, int radix, FILE *fin ) */ char s[ MBEDTLS_MPI_RW_BUFFER_SIZE ]; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( fin != NULL ); + + if( radix < 2 || radix > 16 ) + return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA ); + memset( s, 0, sizeof( s ) ); if( fgets( s, sizeof( s ) - 1, fin ) == NULL ) return( MBEDTLS_ERR_MPI_FILE_IO_ERROR ); @@ -647,6 +684,10 @@ int mbedtls_mpi_write_file( const char *p, const mbedtls_mpi *X, int radix, FILE * newline characters and '\0' */ char s[ MBEDTLS_MPI_RW_BUFFER_SIZE ]; + MPI_VALIDATE_RET( X != NULL ); + + if( radix < 2 || radix > 16 ) + return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA ); memset( s, 0, sizeof( s ) ); @@ -683,6 +724,9 @@ int mbedtls_mpi_read_binary( mbedtls_mpi *X, const unsigned char *buf, size_t bu size_t i, j; size_t const limbs = CHARS_TO_LIMBS( buflen ); + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( buflen == 0 || buf != NULL ); + /* Ensure that target MPI has exactly the necessary number of limbs */ if( X->n != limbs ) { @@ -704,19 +748,45 @@ cleanup: /* * Export X into unsigned binary data, big endian */ -int mbedtls_mpi_write_binary( const mbedtls_mpi *X, unsigned char *buf, size_t buflen ) +int mbedtls_mpi_write_binary( const mbedtls_mpi *X, + unsigned char *buf, size_t buflen ) { - size_t i, j, n; + size_t stored_bytes; + size_t bytes_to_copy; + unsigned char *p; + size_t i; - n = mbedtls_mpi_size( X ); + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( buflen == 0 || buf != NULL ); - if( buflen < n ) - return( MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL ); + stored_bytes = X->n * ciL; - memset( buf, 0, buflen ); + if( stored_bytes < buflen ) + { + /* There is enough space in the output buffer. Write initial + * null bytes and record the position at which to start + * writing the significant bytes. In this case, the execution + * trace of this function does not depend on the value of the + * number. */ + bytes_to_copy = stored_bytes; + p = buf + buflen - stored_bytes; + memset( buf, 0, buflen - stored_bytes ); + } + else + { + /* The output buffer is smaller than the allocated size of X. + * However X may fit if its leading bytes are zero. */ + bytes_to_copy = buflen; + p = buf; + for( i = bytes_to_copy; i < stored_bytes; i++ ) + { + if( GET_BYTE( X, i ) != 0 ) + return( MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL ); + } + } - for( i = buflen - 1, j = 0; n > 0; i--, j++, n-- ) - buf[i] = (unsigned char)( X->p[j / ciL] >> ((j % ciL) << 3) ); + for( i = 0; i < bytes_to_copy; i++ ) + p[bytes_to_copy - i - 1] = GET_BYTE( X, i ); return( 0 ); } @@ -729,6 +799,7 @@ int mbedtls_mpi_shift_l( mbedtls_mpi *X, size_t count ) int ret; size_t i, v0, t1; mbedtls_mpi_uint r0 = 0, r1; + MPI_VALIDATE_RET( X != NULL ); v0 = count / (biL ); t1 = count & (biL - 1); @@ -778,6 +849,7 @@ int mbedtls_mpi_shift_r( mbedtls_mpi *X, size_t count ) { size_t i, v0, v1; mbedtls_mpi_uint r0 = 0, r1; + MPI_VALIDATE_RET( X != NULL ); v0 = count / biL; v1 = count & (biL - 1); @@ -820,6 +892,8 @@ int mbedtls_mpi_shift_r( mbedtls_mpi *X, size_t count ) int mbedtls_mpi_cmp_abs( const mbedtls_mpi *X, const mbedtls_mpi *Y ) { size_t i, j; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( Y != NULL ); for( i = X->n; i > 0; i-- ) if( X->p[i - 1] != 0 ) @@ -850,6 +924,8 @@ int mbedtls_mpi_cmp_abs( const mbedtls_mpi *X, const mbedtls_mpi *Y ) int mbedtls_mpi_cmp_mpi( const mbedtls_mpi *X, const mbedtls_mpi *Y ) { size_t i, j; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( Y != NULL ); for( i = X->n; i > 0; i-- ) if( X->p[i - 1] != 0 ) @@ -884,6 +960,7 @@ int mbedtls_mpi_cmp_int( const mbedtls_mpi *X, mbedtls_mpi_sint z ) { mbedtls_mpi Y; mbedtls_mpi_uint p[1]; + MPI_VALIDATE_RET( X != NULL ); *p = ( z < 0 ) ? -z : z; Y.s = ( z < 0 ) ? -1 : 1; @@ -901,6 +978,9 @@ int mbedtls_mpi_add_abs( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi int ret; size_t i, j; mbedtls_mpi_uint *o, *p, c, tmp; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( A != NULL ); + MPI_VALIDATE_RET( B != NULL ); if( X == B ) { @@ -978,6 +1058,9 @@ int mbedtls_mpi_sub_abs( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi mbedtls_mpi TB; int ret; size_t n; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( A != NULL ); + MPI_VALIDATE_RET( B != NULL ); if( mbedtls_mpi_cmp_abs( A, B ) < 0 ) return( MBEDTLS_ERR_MPI_NEGATIVE_VALUE ); @@ -1018,8 +1101,12 @@ cleanup: */ int mbedtls_mpi_add_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B ) { - int ret, s = A->s; + int ret, s; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( A != NULL ); + MPI_VALIDATE_RET( B != NULL ); + s = A->s; if( A->s * B->s < 0 ) { if( mbedtls_mpi_cmp_abs( A, B ) >= 0 ) @@ -1049,8 +1136,12 @@ cleanup: */ int mbedtls_mpi_sub_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B ) { - int ret, s = A->s; + int ret, s; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( A != NULL ); + MPI_VALIDATE_RET( B != NULL ); + s = A->s; if( A->s * B->s > 0 ) { if( mbedtls_mpi_cmp_abs( A, B ) >= 0 ) @@ -1082,6 +1173,8 @@ int mbedtls_mpi_add_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_sint { mbedtls_mpi _B; mbedtls_mpi_uint p[1]; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( A != NULL ); p[0] = ( b < 0 ) ? -b : b; _B.s = ( b < 0 ) ? -1 : 1; @@ -1098,6 +1191,8 @@ int mbedtls_mpi_sub_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_sint { mbedtls_mpi _B; mbedtls_mpi_uint p[1]; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( A != NULL ); p[0] = ( b < 0 ) ? -b : b; _B.s = ( b < 0 ) ? -1 : 1; @@ -1187,6 +1282,9 @@ int mbedtls_mpi_mul_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi int ret; size_t i, j; mbedtls_mpi TA, TB; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( A != NULL ); + MPI_VALIDATE_RET( B != NULL ); mbedtls_mpi_init( &TA ); mbedtls_mpi_init( &TB ); @@ -1223,6 +1321,8 @@ int mbedtls_mpi_mul_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_uint { mbedtls_mpi _B; mbedtls_mpi_uint p[1]; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( A != NULL ); _B.s = 1; _B.n = 1; @@ -1331,11 +1431,14 @@ static mbedtls_mpi_uint mbedtls_int_div_int( mbedtls_mpi_uint u1, /* * Division by mbedtls_mpi: A = Q * B + R (HAC 14.20) */ -int mbedtls_mpi_div_mpi( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, const mbedtls_mpi *B ) +int mbedtls_mpi_div_mpi( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, + const mbedtls_mpi *B ) { int ret; size_t i, n, t, k; mbedtls_mpi X, Y, Z, T1, T2; + MPI_VALIDATE_RET( A != NULL ); + MPI_VALIDATE_RET( B != NULL ); if( mbedtls_mpi_cmp_int( B, 0 ) == 0 ) return( MBEDTLS_ERR_MPI_DIVISION_BY_ZERO ); @@ -1446,10 +1549,13 @@ cleanup: /* * Division by int: A = Q * b + R */ -int mbedtls_mpi_div_int( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, mbedtls_mpi_sint b ) +int mbedtls_mpi_div_int( mbedtls_mpi *Q, mbedtls_mpi *R, + const mbedtls_mpi *A, + mbedtls_mpi_sint b ) { mbedtls_mpi _B; mbedtls_mpi_uint p[1]; + MPI_VALIDATE_RET( A != NULL ); p[0] = ( b < 0 ) ? -b : b; _B.s = ( b < 0 ) ? -1 : 1; @@ -1465,6 +1571,9 @@ int mbedtls_mpi_div_int( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, m int mbedtls_mpi_mod_mpi( mbedtls_mpi *R, const mbedtls_mpi *A, const mbedtls_mpi *B ) { int ret; + MPI_VALIDATE_RET( R != NULL ); + MPI_VALIDATE_RET( A != NULL ); + MPI_VALIDATE_RET( B != NULL ); if( mbedtls_mpi_cmp_int( B, 0 ) < 0 ) return( MBEDTLS_ERR_MPI_NEGATIVE_VALUE ); @@ -1489,6 +1598,8 @@ int mbedtls_mpi_mod_int( mbedtls_mpi_uint *r, const mbedtls_mpi *A, mbedtls_mpi_ { size_t i; mbedtls_mpi_uint x, y, z; + MPI_VALIDATE_RET( r != NULL ); + MPI_VALIDATE_RET( A != NULL ); if( b == 0 ) return( MBEDTLS_ERR_MPI_DIVISION_BY_ZERO ); @@ -1602,7 +1713,8 @@ static int mpi_montmul( mbedtls_mpi *A, const mbedtls_mpi *B, const mbedtls_mpi /* * Montgomery reduction: A = A * R^-1 mod N */ -static int mpi_montred( mbedtls_mpi *A, const mbedtls_mpi *N, mbedtls_mpi_uint mm, const mbedtls_mpi *T ) +static int mpi_montred( mbedtls_mpi *A, const mbedtls_mpi *N, + mbedtls_mpi_uint mm, const mbedtls_mpi *T ) { mbedtls_mpi_uint z = 1; mbedtls_mpi U; @@ -1616,7 +1728,9 @@ static int mpi_montred( mbedtls_mpi *A, const mbedtls_mpi *N, mbedtls_mpi_uint m /* * Sliding-window exponentiation: X = A^E mod N (HAC 14.85) */ -int mbedtls_mpi_exp_mod( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *E, const mbedtls_mpi *N, mbedtls_mpi *_RR ) +int mbedtls_mpi_exp_mod( mbedtls_mpi *X, const mbedtls_mpi *A, + const mbedtls_mpi *E, const mbedtls_mpi *N, + mbedtls_mpi *_RR ) { int ret; size_t wbits, wsize, one = 1; @@ -1626,6 +1740,11 @@ int mbedtls_mpi_exp_mod( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi mbedtls_mpi RR, T, W[ 2 << MBEDTLS_MPI_WINDOW_SIZE ], Apos; int neg; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( A != NULL ); + MPI_VALIDATE_RET( E != NULL ); + MPI_VALIDATE_RET( N != NULL ); + if( mbedtls_mpi_cmp_int( N, 0 ) <= 0 || ( N->p[0] & 1 ) == 0 ) return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA ); @@ -1830,6 +1949,10 @@ int mbedtls_mpi_gcd( mbedtls_mpi *G, const mbedtls_mpi *A, const mbedtls_mpi *B size_t lz, lzt; mbedtls_mpi TG, TA, TB; + MPI_VALIDATE_RET( G != NULL ); + MPI_VALIDATE_RET( A != NULL ); + MPI_VALIDATE_RET( B != NULL ); + mbedtls_mpi_init( &TG ); mbedtls_mpi_init( &TA ); mbedtls_mpi_init( &TB ); MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &TA, A ) ); @@ -1886,6 +2009,8 @@ int mbedtls_mpi_fill_random( mbedtls_mpi *X, size_t size, { int ret; unsigned char buf[MBEDTLS_MPI_MAX_SIZE]; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( f_rng != NULL ); if( size > MBEDTLS_MPI_MAX_SIZE ) return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA ); @@ -1905,6 +2030,9 @@ int mbedtls_mpi_inv_mod( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi { int ret; mbedtls_mpi G, TA, TU, U1, U2, TB, TV, V1, V2; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( A != NULL ); + MPI_VALIDATE_RET( N != NULL ); if( mbedtls_mpi_cmp_int( N, 1 ) <= 0 ) return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA ); @@ -2056,15 +2184,19 @@ cleanup: /* * Miller-Rabin pseudo-primality test (HAC 4.24) */ -static int mpi_miller_rabin( const mbedtls_mpi *X, +static int mpi_miller_rabin( const mbedtls_mpi *X, size_t rounds, int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) { int ret, count; - size_t i, j, k, n, s; + size_t i, j, k, s; mbedtls_mpi W, R, T, A, RR; - mbedtls_mpi_init( &W ); mbedtls_mpi_init( &R ); mbedtls_mpi_init( &T ); mbedtls_mpi_init( &A ); + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( f_rng != NULL ); + + mbedtls_mpi_init( &W ); mbedtls_mpi_init( &R ); + mbedtls_mpi_init( &T ); mbedtls_mpi_init( &A ); mbedtls_mpi_init( &RR ); /* @@ -2077,27 +2209,12 @@ static int mpi_miller_rabin( const mbedtls_mpi *X, MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &R, s ) ); i = mbedtls_mpi_bitlen( X ); - /* - * HAC, table 4.4 - */ - n = ( ( i >= 1300 ) ? 2 : ( i >= 850 ) ? 3 : - ( i >= 650 ) ? 4 : ( i >= 350 ) ? 8 : - ( i >= 250 ) ? 12 : ( i >= 150 ) ? 18 : 27 ); - for( i = 0; i < n; i++ ) + for( i = 0; i < rounds; i++ ) { /* * pick a random A, 1 < A < |X| - 1 */ - MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &A, X->n * ciL, f_rng, p_rng ) ); - - if( mbedtls_mpi_cmp_mpi( &A, &W ) >= 0 ) - { - j = mbedtls_mpi_bitlen( &A ) - mbedtls_mpi_bitlen( &W ); - MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &A, j + 1 ) ); - } - A.p[0] |= 3; - count = 0; do { MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &A, X->n * ciL, f_rng, p_rng ) ); @@ -2105,7 +2222,7 @@ static int mpi_miller_rabin( const mbedtls_mpi *X, j = mbedtls_mpi_bitlen( &A ); k = mbedtls_mpi_bitlen( &W ); if (j > k) { - MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &A, j - k ) ); + A.p[A.n - 1] &= ( (mbedtls_mpi_uint) 1 << ( k - ( A.n - 1 ) * biL - 1 ) ) - 1; } if (count++ > 30) { @@ -2151,7 +2268,8 @@ static int mpi_miller_rabin( const mbedtls_mpi *X, } cleanup: - mbedtls_mpi_free( &W ); mbedtls_mpi_free( &R ); mbedtls_mpi_free( &T ); mbedtls_mpi_free( &A ); + mbedtls_mpi_free( &W ); mbedtls_mpi_free( &R ); + mbedtls_mpi_free( &T ); mbedtls_mpi_free( &A ); mbedtls_mpi_free( &RR ); return( ret ); @@ -2160,12 +2278,14 @@ cleanup: /* * Pseudo-primality test: small factors, then Miller-Rabin */ -int mbedtls_mpi_is_prime( const mbedtls_mpi *X, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) +int mbedtls_mpi_is_prime_ext( const mbedtls_mpi *X, int rounds, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng ) { int ret; mbedtls_mpi XX; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( f_rng != NULL ); XX.s = 1; XX.n = X->n; @@ -2186,17 +2306,37 @@ int mbedtls_mpi_is_prime( const mbedtls_mpi *X, return( ret ); } - return( mpi_miller_rabin( &XX, f_rng, p_rng ) ); + return( mpi_miller_rabin( &XX, rounds, f_rng, p_rng ) ); +} + +#if !defined(MBEDTLS_DEPRECATED_REMOVED) +/* + * Pseudo-primality test, error probability 2^-80 + */ +int mbedtls_mpi_is_prime( const mbedtls_mpi *X, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng ) +{ + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( f_rng != NULL ); + + /* + * In the past our key generation aimed for an error rate of at most + * 2^-80. Since this function is deprecated, aim for the same certainty + * here as well. + */ + return( mbedtls_mpi_is_prime_ext( X, 40, f_rng, p_rng ) ); } +#endif /* * Prime number generation * - * If dh_flag is 0 and nbits is at least 1024, then the procedure - * follows the RSA probably-prime generation method of FIPS 186-4. - * NB. FIPS 186-4 only allows the specific bit lengths of 1024 and 1536. + * To generate an RSA key in a way recommended by FIPS 186-4, both primes must + * be either 1024 bits or 1536 bits long, and flags must contain + * MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR. */ -int mbedtls_mpi_gen_prime( mbedtls_mpi *X, size_t nbits, int dh_flag, +int mbedtls_mpi_gen_prime( mbedtls_mpi *X, size_t nbits, int flags, int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) { @@ -2209,9 +2349,13 @@ int mbedtls_mpi_gen_prime( mbedtls_mpi *X, size_t nbits, int dh_flag, #endif int ret = MBEDTLS_ERR_MPI_NOT_ACCEPTABLE; size_t k, n; + int rounds; mbedtls_mpi_uint r; mbedtls_mpi Y; + MPI_VALIDATE_RET( X != NULL ); + MPI_VALIDATE_RET( f_rng != NULL ); + if( nbits < 3 || nbits > MBEDTLS_MPI_MAX_BITS ) return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA ); @@ -2219,6 +2363,27 @@ int mbedtls_mpi_gen_prime( mbedtls_mpi *X, size_t nbits, int dh_flag, n = BITS_TO_LIMBS( nbits ); + if( ( flags & MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR ) == 0 ) + { + /* + * 2^-80 error probability, number of rounds chosen per HAC, table 4.4 + */ + rounds = ( ( nbits >= 1300 ) ? 2 : ( nbits >= 850 ) ? 3 : + ( nbits >= 650 ) ? 4 : ( nbits >= 350 ) ? 8 : + ( nbits >= 250 ) ? 12 : ( nbits >= 150 ) ? 18 : 27 ); + } + else + { + /* + * 2^-100 error probability, number of rounds computed based on HAC, + * fact 4.48 + */ + rounds = ( ( nbits >= 1450 ) ? 4 : ( nbits >= 1150 ) ? 5 : + ( nbits >= 1000 ) ? 6 : ( nbits >= 850 ) ? 7 : + ( nbits >= 750 ) ? 8 : ( nbits >= 500 ) ? 13 : + ( nbits >= 250 ) ? 28 : ( nbits >= 150 ) ? 40 : 51 ); + } + while( 1 ) { MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( X, n * ciL, f_rng, p_rng ) ); @@ -2229,9 +2394,9 @@ int mbedtls_mpi_gen_prime( mbedtls_mpi *X, size_t nbits, int dh_flag, if( k > nbits ) MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( X, k - nbits ) ); X->p[0] |= 1; - if( dh_flag == 0 ) + if( ( flags & MBEDTLS_MPI_GEN_PRIME_FLAG_DH ) == 0 ) { - ret = mbedtls_mpi_is_prime( X, f_rng, p_rng ); + ret = mbedtls_mpi_is_prime_ext( X, rounds, f_rng, p_rng ); if( ret != MBEDTLS_ERR_MPI_NOT_ACCEPTABLE ) goto cleanup; @@ -2264,8 +2429,10 @@ int mbedtls_mpi_gen_prime( mbedtls_mpi *X, size_t nbits, int dh_flag, */ if( ( ret = mpi_check_small_factors( X ) ) == 0 && ( ret = mpi_check_small_factors( &Y ) ) == 0 && - ( ret = mpi_miller_rabin( X, f_rng, p_rng ) ) == 0 && - ( ret = mpi_miller_rabin( &Y, f_rng, p_rng ) ) == 0 ) + ( ret = mpi_miller_rabin( X, rounds, f_rng, p_rng ) ) + == 0 && + ( ret = mpi_miller_rabin( &Y, rounds, f_rng, p_rng ) ) + == 0 ) goto cleanup; if( ret != MBEDTLS_ERR_MPI_NOT_ACCEPTABLE ) diff --git a/thirdparty/mbedtls/library/blowfish.c b/thirdparty/mbedtls/library/blowfish.c index 5b6bb9885f..cbf9238246 100644 --- a/thirdparty/mbedtls/library/blowfish.c +++ b/thirdparty/mbedtls/library/blowfish.c @@ -40,6 +40,12 @@ #if !defined(MBEDTLS_BLOWFISH_ALT) +/* Parameter validation macros */ +#define BLOWFISH_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_BLOWFISH_BAD_INPUT_DATA ) +#define BLOWFISH_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + /* * 32-bit integer manipulation macros (big endian) */ @@ -153,6 +159,7 @@ static void blowfish_dec( mbedtls_blowfish_context *ctx, uint32_t *xl, uint32_t void mbedtls_blowfish_init( mbedtls_blowfish_context *ctx ) { + BLOWFISH_VALIDATE( ctx != NULL ); memset( ctx, 0, sizeof( mbedtls_blowfish_context ) ); } @@ -167,16 +174,20 @@ void mbedtls_blowfish_free( mbedtls_blowfish_context *ctx ) /* * Blowfish key schedule */ -int mbedtls_blowfish_setkey( mbedtls_blowfish_context *ctx, const unsigned char *key, - unsigned int keybits ) +int mbedtls_blowfish_setkey( mbedtls_blowfish_context *ctx, + const unsigned char *key, + unsigned int keybits ) { unsigned int i, j, k; uint32_t data, datal, datar; + BLOWFISH_VALIDATE_RET( ctx != NULL ); + BLOWFISH_VALIDATE_RET( key != NULL ); - if( keybits < MBEDTLS_BLOWFISH_MIN_KEY_BITS || keybits > MBEDTLS_BLOWFISH_MAX_KEY_BITS || - ( keybits % 8 ) ) + if( keybits < MBEDTLS_BLOWFISH_MIN_KEY_BITS || + keybits > MBEDTLS_BLOWFISH_MAX_KEY_BITS || + keybits % 8 != 0 ) { - return( MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH ); + return( MBEDTLS_ERR_BLOWFISH_BAD_INPUT_DATA ); } keybits >>= 3; @@ -231,6 +242,11 @@ int mbedtls_blowfish_crypt_ecb( mbedtls_blowfish_context *ctx, unsigned char output[MBEDTLS_BLOWFISH_BLOCKSIZE] ) { uint32_t X0, X1; + BLOWFISH_VALIDATE_RET( ctx != NULL ); + BLOWFISH_VALIDATE_RET( mode == MBEDTLS_BLOWFISH_ENCRYPT || + mode == MBEDTLS_BLOWFISH_DECRYPT ); + BLOWFISH_VALIDATE_RET( input != NULL ); + BLOWFISH_VALIDATE_RET( output != NULL ); GET_UINT32_BE( X0, input, 0 ); GET_UINT32_BE( X1, input, 4 ); @@ -263,6 +279,12 @@ int mbedtls_blowfish_crypt_cbc( mbedtls_blowfish_context *ctx, { int i; unsigned char temp[MBEDTLS_BLOWFISH_BLOCKSIZE]; + BLOWFISH_VALIDATE_RET( ctx != NULL ); + BLOWFISH_VALIDATE_RET( mode == MBEDTLS_BLOWFISH_ENCRYPT || + mode == MBEDTLS_BLOWFISH_DECRYPT ); + BLOWFISH_VALIDATE_RET( iv != NULL ); + BLOWFISH_VALIDATE_RET( length == 0 || input != NULL ); + BLOWFISH_VALIDATE_RET( length == 0 || output != NULL ); if( length % MBEDTLS_BLOWFISH_BLOCKSIZE ) return( MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH ); @@ -317,7 +339,19 @@ int mbedtls_blowfish_crypt_cfb64( mbedtls_blowfish_context *ctx, unsigned char *output ) { int c; - size_t n = *iv_off; + size_t n; + + BLOWFISH_VALIDATE_RET( ctx != NULL ); + BLOWFISH_VALIDATE_RET( mode == MBEDTLS_BLOWFISH_ENCRYPT || + mode == MBEDTLS_BLOWFISH_DECRYPT ); + BLOWFISH_VALIDATE_RET( iv != NULL ); + BLOWFISH_VALIDATE_RET( iv_off != NULL ); + BLOWFISH_VALIDATE_RET( length == 0 || input != NULL ); + BLOWFISH_VALIDATE_RET( length == 0 || output != NULL ); + + n = *iv_off; + if( n >= 8 ) + return( MBEDTLS_ERR_BLOWFISH_BAD_INPUT_DATA ); if( mode == MBEDTLS_BLOWFISH_DECRYPT ) { @@ -365,7 +399,17 @@ int mbedtls_blowfish_crypt_ctr( mbedtls_blowfish_context *ctx, unsigned char *output ) { int c, i; - size_t n = *nc_off; + size_t n; + BLOWFISH_VALIDATE_RET( ctx != NULL ); + BLOWFISH_VALIDATE_RET( nonce_counter != NULL ); + BLOWFISH_VALIDATE_RET( stream_block != NULL ); + BLOWFISH_VALIDATE_RET( nc_off != NULL ); + BLOWFISH_VALIDATE_RET( length == 0 || input != NULL ); + BLOWFISH_VALIDATE_RET( length == 0 || output != NULL ); + + n = *nc_off; + if( n >= 8 ) + return( MBEDTLS_ERR_BLOWFISH_BAD_INPUT_DATA ); while( length-- ) { diff --git a/thirdparty/mbedtls/library/camellia.c b/thirdparty/mbedtls/library/camellia.c index 41b7da0fae..22262b89a8 100644 --- a/thirdparty/mbedtls/library/camellia.c +++ b/thirdparty/mbedtls/library/camellia.c @@ -49,6 +49,12 @@ #if !defined(MBEDTLS_CAMELLIA_ALT) +/* Parameter validation macros */ +#define CAMELLIA_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_CAMELLIA_BAD_INPUT_DATA ) +#define CAMELLIA_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + /* * 32-bit integer manipulation macros (big endian) */ @@ -321,6 +327,7 @@ static void camellia_feistel( const uint32_t x[2], const uint32_t k[2], void mbedtls_camellia_init( mbedtls_camellia_context *ctx ) { + CAMELLIA_VALIDATE( ctx != NULL ); memset( ctx, 0, sizeof( mbedtls_camellia_context ) ); } @@ -335,8 +342,9 @@ void mbedtls_camellia_free( mbedtls_camellia_context *ctx ) /* * Camellia key schedule (encryption) */ -int mbedtls_camellia_setkey_enc( mbedtls_camellia_context *ctx, const unsigned char *key, - unsigned int keybits ) +int mbedtls_camellia_setkey_enc( mbedtls_camellia_context *ctx, + const unsigned char *key, + unsigned int keybits ) { int idx; size_t i; @@ -346,6 +354,9 @@ int mbedtls_camellia_setkey_enc( mbedtls_camellia_context *ctx, const unsigned c uint32_t KC[16]; uint32_t TK[20]; + CAMELLIA_VALIDATE_RET( ctx != NULL ); + CAMELLIA_VALIDATE_RET( key != NULL ); + RK = ctx->rk; memset( t, 0, 64 ); @@ -356,7 +367,7 @@ int mbedtls_camellia_setkey_enc( mbedtls_camellia_context *ctx, const unsigned c case 128: ctx->nr = 3; idx = 0; break; case 192: case 256: ctx->nr = 4; idx = 1; break; - default : return( MBEDTLS_ERR_CAMELLIA_INVALID_KEY_LENGTH ); + default : return( MBEDTLS_ERR_CAMELLIA_BAD_INPUT_DATA ); } for( i = 0; i < keybits / 8; ++i ) @@ -440,14 +451,17 @@ int mbedtls_camellia_setkey_enc( mbedtls_camellia_context *ctx, const unsigned c /* * Camellia key schedule (decryption) */ -int mbedtls_camellia_setkey_dec( mbedtls_camellia_context *ctx, const unsigned char *key, - unsigned int keybits ) +int mbedtls_camellia_setkey_dec( mbedtls_camellia_context *ctx, + const unsigned char *key, + unsigned int keybits ) { int idx, ret; size_t i; mbedtls_camellia_context cty; uint32_t *RK; uint32_t *SK; + CAMELLIA_VALIDATE_RET( ctx != NULL ); + CAMELLIA_VALIDATE_RET( key != NULL ); mbedtls_camellia_init( &cty ); @@ -495,6 +509,11 @@ int mbedtls_camellia_crypt_ecb( mbedtls_camellia_context *ctx, { int NR; uint32_t *RK, X[4]; + CAMELLIA_VALIDATE_RET( ctx != NULL ); + CAMELLIA_VALIDATE_RET( mode == MBEDTLS_CAMELLIA_ENCRYPT || + mode == MBEDTLS_CAMELLIA_DECRYPT ); + CAMELLIA_VALIDATE_RET( input != NULL ); + CAMELLIA_VALIDATE_RET( output != NULL ); ( (void) mode ); @@ -552,14 +571,20 @@ int mbedtls_camellia_crypt_ecb( mbedtls_camellia_context *ctx, * Camellia-CBC buffer encryption/decryption */ int mbedtls_camellia_crypt_cbc( mbedtls_camellia_context *ctx, - int mode, - size_t length, - unsigned char iv[16], - const unsigned char *input, - unsigned char *output ) + int mode, + size_t length, + unsigned char iv[16], + const unsigned char *input, + unsigned char *output ) { int i; unsigned char temp[16]; + CAMELLIA_VALIDATE_RET( ctx != NULL ); + CAMELLIA_VALIDATE_RET( mode == MBEDTLS_CAMELLIA_ENCRYPT || + mode == MBEDTLS_CAMELLIA_DECRYPT ); + CAMELLIA_VALIDATE_RET( iv != NULL ); + CAMELLIA_VALIDATE_RET( length == 0 || input != NULL ); + CAMELLIA_VALIDATE_RET( length == 0 || output != NULL ); if( length % 16 ) return( MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH ); @@ -614,7 +639,18 @@ int mbedtls_camellia_crypt_cfb128( mbedtls_camellia_context *ctx, unsigned char *output ) { int c; - size_t n = *iv_off; + size_t n; + CAMELLIA_VALIDATE_RET( ctx != NULL ); + CAMELLIA_VALIDATE_RET( mode == MBEDTLS_CAMELLIA_ENCRYPT || + mode == MBEDTLS_CAMELLIA_DECRYPT ); + CAMELLIA_VALIDATE_RET( iv != NULL ); + CAMELLIA_VALIDATE_RET( iv_off != NULL ); + CAMELLIA_VALIDATE_RET( length == 0 || input != NULL ); + CAMELLIA_VALIDATE_RET( length == 0 || output != NULL ); + + n = *iv_off; + if( n >= 16 ) + return( MBEDTLS_ERR_CAMELLIA_BAD_INPUT_DATA ); if( mode == MBEDTLS_CAMELLIA_DECRYPT ) { @@ -662,7 +698,17 @@ int mbedtls_camellia_crypt_ctr( mbedtls_camellia_context *ctx, unsigned char *output ) { int c, i; - size_t n = *nc_off; + size_t n; + CAMELLIA_VALIDATE_RET( ctx != NULL ); + CAMELLIA_VALIDATE_RET( nonce_counter != NULL ); + CAMELLIA_VALIDATE_RET( stream_block != NULL ); + CAMELLIA_VALIDATE_RET( nc_off != NULL ); + CAMELLIA_VALIDATE_RET( length == 0 || input != NULL ); + CAMELLIA_VALIDATE_RET( length == 0 || output != NULL ); + + n = *nc_off; + if( n >= 16 ) + return( MBEDTLS_ERR_CAMELLIA_BAD_INPUT_DATA ); while( length-- ) { diff --git a/thirdparty/mbedtls/library/ccm.c b/thirdparty/mbedtls/library/ccm.c index 804eaf80f1..01e58b0436 100644 --- a/thirdparty/mbedtls/library/ccm.c +++ b/thirdparty/mbedtls/library/ccm.c @@ -52,6 +52,11 @@ #if !defined(MBEDTLS_CCM_ALT) +#define CCM_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_CCM_BAD_INPUT ) +#define CCM_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + #define CCM_ENCRYPT 0 #define CCM_DECRYPT 1 @@ -60,6 +65,7 @@ */ void mbedtls_ccm_init( mbedtls_ccm_context *ctx ) { + CCM_VALIDATE( ctx != NULL ); memset( ctx, 0, sizeof( mbedtls_ccm_context ) ); } @@ -71,6 +77,9 @@ int mbedtls_ccm_setkey( mbedtls_ccm_context *ctx, int ret; const mbedtls_cipher_info_t *cipher_info; + CCM_VALIDATE_RET( ctx != NULL ); + CCM_VALIDATE_RET( key != NULL ); + cipher_info = mbedtls_cipher_info_from_values( cipher, keybits, MBEDTLS_MODE_ECB ); if( cipher_info == NULL ) return( MBEDTLS_ERR_CCM_BAD_INPUT ); @@ -97,6 +106,8 @@ int mbedtls_ccm_setkey( mbedtls_ccm_context *ctx, */ void mbedtls_ccm_free( mbedtls_ccm_context *ctx ) { + if( ctx == NULL ) + return; mbedtls_cipher_free( &ctx->cipher_ctx ); mbedtls_platform_zeroize( ctx, sizeof( mbedtls_ccm_context ) ); } @@ -310,6 +321,12 @@ int mbedtls_ccm_star_encrypt_and_tag( mbedtls_ccm_context *ctx, size_t length, const unsigned char *input, unsigned char *output, unsigned char *tag, size_t tag_len ) { + CCM_VALIDATE_RET( ctx != NULL ); + CCM_VALIDATE_RET( iv != NULL ); + CCM_VALIDATE_RET( add_len == 0 || add != NULL ); + CCM_VALIDATE_RET( length == 0 || input != NULL ); + CCM_VALIDATE_RET( length == 0 || output != NULL ); + CCM_VALIDATE_RET( tag_len == 0 || tag != NULL ); return( ccm_auth_crypt( ctx, CCM_ENCRYPT, length, iv, iv_len, add, add_len, input, output, tag, tag_len ) ); } @@ -320,6 +337,12 @@ int mbedtls_ccm_encrypt_and_tag( mbedtls_ccm_context *ctx, size_t length, const unsigned char *input, unsigned char *output, unsigned char *tag, size_t tag_len ) { + CCM_VALIDATE_RET( ctx != NULL ); + CCM_VALIDATE_RET( iv != NULL ); + CCM_VALIDATE_RET( add_len == 0 || add != NULL ); + CCM_VALIDATE_RET( length == 0 || input != NULL ); + CCM_VALIDATE_RET( length == 0 || output != NULL ); + CCM_VALIDATE_RET( tag_len == 0 || tag != NULL ); if( tag_len == 0 ) return( MBEDTLS_ERR_CCM_BAD_INPUT ); @@ -341,6 +364,13 @@ int mbedtls_ccm_star_auth_decrypt( mbedtls_ccm_context *ctx, size_t length, unsigned char i; int diff; + CCM_VALIDATE_RET( ctx != NULL ); + CCM_VALIDATE_RET( iv != NULL ); + CCM_VALIDATE_RET( add_len == 0 || add != NULL ); + CCM_VALIDATE_RET( length == 0 || input != NULL ); + CCM_VALIDATE_RET( length == 0 || output != NULL ); + CCM_VALIDATE_RET( tag_len == 0 || tag != NULL ); + if( ( ret = ccm_auth_crypt( ctx, CCM_DECRYPT, length, iv, iv_len, add, add_len, input, output, check_tag, tag_len ) ) != 0 ) @@ -367,6 +397,13 @@ int mbedtls_ccm_auth_decrypt( mbedtls_ccm_context *ctx, size_t length, const unsigned char *input, unsigned char *output, const unsigned char *tag, size_t tag_len ) { + CCM_VALIDATE_RET( ctx != NULL ); + CCM_VALIDATE_RET( iv != NULL ); + CCM_VALIDATE_RET( add_len == 0 || add != NULL ); + CCM_VALIDATE_RET( length == 0 || input != NULL ); + CCM_VALIDATE_RET( length == 0 || output != NULL ); + CCM_VALIDATE_RET( tag_len == 0 || tag != NULL ); + if( tag_len == 0 ) return( MBEDTLS_ERR_CCM_BAD_INPUT ); @@ -381,7 +418,8 @@ int mbedtls_ccm_auth_decrypt( mbedtls_ccm_context *ctx, size_t length, */ #define NB_TESTS 3 - +#define CCM_SELFTEST_PT_MAX_LEN 24 +#define CCM_SELFTEST_CT_MAX_LEN 32 /* * The data is the same for all tests, only the used length changes */ @@ -401,7 +439,7 @@ static const unsigned char ad[] = { 0x10, 0x11, 0x12, 0x13 }; -static const unsigned char msg[] = { +static const unsigned char msg[CCM_SELFTEST_PT_MAX_LEN] = { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, @@ -412,7 +450,7 @@ static const size_t add_len[NB_TESTS] = { 8, 16, 20 }; static const size_t msg_len[NB_TESTS] = { 4, 16, 24 }; static const size_t tag_len[NB_TESTS] = { 4, 6, 8 }; -static const unsigned char res[NB_TESTS][32] = { +static const unsigned char res[NB_TESTS][CCM_SELFTEST_CT_MAX_LEN] = { { 0x71, 0x62, 0x01, 0x5b, 0x4d, 0xac, 0x25, 0x5d }, { 0xd2, 0xa1, 0xf0, 0xe0, 0x51, 0xea, 0x5f, 0x62, 0x08, 0x1a, 0x77, 0x92, 0x07, 0x3d, 0x59, 0x3d, @@ -426,7 +464,13 @@ static const unsigned char res[NB_TESTS][32] = { int mbedtls_ccm_self_test( int verbose ) { mbedtls_ccm_context ctx; - unsigned char out[32]; + /* + * Some hardware accelerators require the input and output buffers + * would be in RAM, because the flash is not accessible. + * Use buffers on the stack to hold the test vectors data. + */ + unsigned char plaintext[CCM_SELFTEST_PT_MAX_LEN]; + unsigned char ciphertext[CCM_SELFTEST_CT_MAX_LEN]; size_t i; int ret; @@ -445,27 +489,32 @@ int mbedtls_ccm_self_test( int verbose ) if( verbose != 0 ) mbedtls_printf( " CCM-AES #%u: ", (unsigned int) i + 1 ); + memset( plaintext, 0, CCM_SELFTEST_PT_MAX_LEN ); + memset( ciphertext, 0, CCM_SELFTEST_CT_MAX_LEN ); + memcpy( plaintext, msg, msg_len[i] ); + ret = mbedtls_ccm_encrypt_and_tag( &ctx, msg_len[i], - iv, iv_len[i], ad, add_len[i], - msg, out, - out + msg_len[i], tag_len[i] ); + iv, iv_len[i], ad, add_len[i], + plaintext, ciphertext, + ciphertext + msg_len[i], tag_len[i] ); if( ret != 0 || - memcmp( out, res[i], msg_len[i] + tag_len[i] ) != 0 ) + memcmp( ciphertext, res[i], msg_len[i] + tag_len[i] ) != 0 ) { if( verbose != 0 ) mbedtls_printf( "failed\n" ); return( 1 ); } + memset( plaintext, 0, CCM_SELFTEST_PT_MAX_LEN ); ret = mbedtls_ccm_auth_decrypt( &ctx, msg_len[i], - iv, iv_len[i], ad, add_len[i], - res[i], out, - res[i] + msg_len[i], tag_len[i] ); + iv, iv_len[i], ad, add_len[i], + ciphertext, plaintext, + ciphertext + msg_len[i], tag_len[i] ); if( ret != 0 || - memcmp( out, msg, msg_len[i] ) != 0 ) + memcmp( plaintext, msg, msg_len[i] ) != 0 ) { if( verbose != 0 ) mbedtls_printf( "failed\n" ); diff --git a/thirdparty/mbedtls/library/certs.c b/thirdparty/mbedtls/library/certs.c index f1379b8cb1..ff0f11e923 100644 --- a/thirdparty/mbedtls/library/certs.c +++ b/thirdparty/mbedtls/library/certs.c @@ -218,12 +218,13 @@ const size_t mbedtls_test_ca_key_rsa_len = sizeof( mbedtls_test_ca_key_rsa ); const char mbedtls_test_ca_pwd_rsa[] = "PolarSSLTest"; const size_t mbedtls_test_ca_pwd_rsa_len = sizeof( mbedtls_test_ca_pwd_rsa ) - 1; +/* tests/data_files/server2.crt */ const char mbedtls_test_srv_crt_rsa[] = "-----BEGIN CERTIFICATE-----\r\n" "MIIDNzCCAh+gAwIBAgIBAjANBgkqhkiG9w0BAQUFADA7MQswCQYDVQQGEwJOTDER\r\n" -"MA8GA1UEChMIUG9sYXJTU0wxGTAXBgNVBAMTEFBvbGFyU1NMIFRlc3QgQ0EwHhcN\r\n" +"MA8GA1UECgwIUG9sYXJTU0wxGTAXBgNVBAMMEFBvbGFyU1NMIFRlc3QgQ0EwHhcN\r\n" "MTEwMjEyMTQ0NDA2WhcNMjEwMjEyMTQ0NDA2WjA0MQswCQYDVQQGEwJOTDERMA8G\r\n" -"A1UEChMIUG9sYXJTU0wxEjAQBgNVBAMTCWxvY2FsaG9zdDCCASIwDQYJKoZIhvcN\r\n" +"A1UECgwIUG9sYXJTU0wxEjAQBgNVBAMMCWxvY2FsaG9zdDCCASIwDQYJKoZIhvcN\r\n" "AQEBBQADggEPADCCAQoCggEBAMFNo93nzR3RBNdJcriZrA545Do8Ss86ExbQWuTN\r\n" "owCIp+4ea5anUrSQ7y1yej4kmvy2NKwk9XfgJmSMnLAofaHa6ozmyRyWvP7BBFKz\r\n" "NtSj+uGxdtiQwWG0ZlI2oiZTqqt0Xgd9GYLbKtgfoNkNHC1JZvdbJXNG6AuKT2kM\r\n" @@ -231,16 +232,17 @@ const char mbedtls_test_srv_crt_rsa[] = "hYvai0Re4hjGYi/HZo36Xdh98yeJKQHFkA4/J/EwyEoO79bex8cna8cFPXrEAjya\r\n" "HT4P6DSYW8tzS1KW2BGiLICIaTla0w+w3lkvEcf36hIBMJcCAwEAAaNNMEswCQYD\r\n" "VR0TBAIwADAdBgNVHQ4EFgQUpQXoZLjc32APUBJNYKhkr02LQ5MwHwYDVR0jBBgw\r\n" -"FoAUtFrkpbPe0lL2udWmlQ/rPrzH/f8wDQYJKoZIhvcNAQEFBQADggEBAJxnXClY\r\n" -"oHkbp70cqBrsGXLybA74czbO5RdLEgFs7rHVS9r+c293luS/KdliLScZqAzYVylw\r\n" -"UfRWvKMoWhHYKp3dEIS4xTXk6/5zXxhv9Rw8SGc8qn6vITHk1S1mPevtekgasY5Y\r\n" -"iWQuM3h4YVlRH3HHEMAD1TnAexfXHHDFQGe+Bd1iAbz1/sH9H8l4StwX6egvTK3M\r\n" -"wXRwkKkvjKaEDA9ATbZx0mI8LGsxSuCqe9r9dyjmttd47J1p1Rulz3CLzaRcVIuS\r\n" -"RRQfaD8neM9c1S/iJ/amTVqJxA1KOdOS5780WhPfSArA+g4qAmSjelc3p4wWpha8\r\n" -"zhuYwjVuX6JHG0c=\r\n" +"FoAUtFrkpbPe0lL2udWmlQ/rPrzH/f8wDQYJKoZIhvcNAQEFBQADggEBAAFzC0rF\r\n" +"y6De8WMcdgQrEw3AhBHFjzqnxZw1ene4IBSC7lTw8rBSy3jOWQdPUWn+0y/pCeeF\r\n" +"kti6sevFdl1hLemGtd4q+T9TKEKGg3ND4ARfB5AUZZ9uEHq8WBkiwus5clGS17Qd\r\n" +"dS/TOisB59tQruLx1E1bPLtBKyqk4koC5WAULJwfpswGSyWJTpYwIpxcWE3D2tBu\r\n" +"UB6MZfXZFzWmWEOyKbeoXjXe8GBCGgHLywvYDsGQ36HSGtEsAvR2QaTLSxWYcfk1\r\n" +"fbDn4jSWkb4yZy1r01UEigFQtONieGwRFaUqEcFJHJvEEGVgh9keaVlOj2vrwf5r\r\n" +"4mN4lW7gLdenN6g=\r\n" "-----END CERTIFICATE-----\r\n"; const size_t mbedtls_test_srv_crt_rsa_len = sizeof( mbedtls_test_srv_crt_rsa ); +/* tests/data_files/server2.key */ const char mbedtls_test_srv_key_rsa[] = "-----BEGIN RSA PRIVATE KEY-----\r\n" "MIIEpAIBAAKCAQEAwU2j3efNHdEE10lyuJmsDnjkOjxKzzoTFtBa5M2jAIin7h5r\r\n" @@ -271,11 +273,12 @@ const char mbedtls_test_srv_key_rsa[] = "-----END RSA PRIVATE KEY-----\r\n"; const size_t mbedtls_test_srv_key_rsa_len = sizeof( mbedtls_test_srv_key_rsa ); +/* tests/data_files/cli-rsa-sha256.crt */ const char mbedtls_test_cli_crt_rsa[] = "-----BEGIN CERTIFICATE-----\r\n" -"MIIDhTCCAm2gAwIBAgIBBDANBgkqhkiG9w0BAQsFADA7MQswCQYDVQQGEwJOTDER\r\n" +"MIIDPzCCAiegAwIBAgIBBDANBgkqhkiG9w0BAQsFADA7MQswCQYDVQQGEwJOTDER\r\n" "MA8GA1UECgwIUG9sYXJTU0wxGTAXBgNVBAMMEFBvbGFyU1NMIFRlc3QgQ0EwHhcN\r\n" -"MTcwNTA1MTMwNzU5WhcNMjcwNTA2MTMwNzU5WjA8MQswCQYDVQQGEwJOTDERMA8G\r\n" +"MTEwMjEyMTQ0NDA2WhcNMjEwMjEyMTQ0NDA2WjA8MQswCQYDVQQGEwJOTDERMA8G\r\n" "A1UECgwIUG9sYXJTU0wxGjAYBgNVBAMMEVBvbGFyU1NMIENsaWVudCAyMIIBIjAN\r\n" "BgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyHTEzLn5tXnpRdkUYLB9u5Pyax6f\r\n" "M60Nj4o8VmXl3ETZzGaFB9X4J7BKNdBjngpuG7fa8H6r7gwQk4ZJGDTzqCrSV/Uu\r\n" @@ -283,18 +286,18 @@ const char mbedtls_test_cli_crt_rsa[] = "MjDV0/YI0FZPRo7yX/k9Z5GIMC5Cst99++UMd//sMcB4j7/Cf8qtbCHWjdmLao5v\r\n" "4Jv4EFbMs44TFeY0BGbH7vk2DmqV9gmaBmf0ZXH4yqSxJeD+PIs1BGe64E92hfx/\r\n" "/DZrtenNLQNiTrM9AM+vdqBpVoNq0qjU51Bx5rU2BXcFbXvI5MT9TNUhXwIDAQAB\r\n" -"o4GSMIGPMB0GA1UdDgQWBBRxoQBzckAvVHZeM/xSj7zx3WtGITBjBgNVHSMEXDBa\r\n" -"gBS0WuSls97SUva51aaVD+s+vMf9/6E/pD0wOzELMAkGA1UEBhMCTkwxETAPBgNV\r\n" -"BAoMCFBvbGFyU1NMMRkwFwYDVQQDDBBQb2xhclNTTCBUZXN0IENBggEAMAkGA1Ud\r\n" -"EwQCMAAwDQYJKoZIhvcNAQELBQADggEBAC7yO786NvcHpK8UovKIG9cB32oSQQom\r\n" -"LoR0eHDRzdqEkoq7yGZufHFiRAAzbMqJfogRtxlrWAeB4y/jGaMBV25IbFOIcH2W\r\n" -"iCEaMMbG+VQLKNvuC63kmw/Zewc9ThM6Pa1Hcy0axT0faf1B/U01j0FIcw/6mTfK\r\n" -"D8w48OIwc1yr0JtutCVjig5DC0yznGMt32RyseOLcUe+lfq005v2PAiCozr5X8rE\r\n" -"ofGZpiM2NqRPePgYy+Vc75Zk28xkRQq1ncprgQb3S4vTsZdScpM9hLf+eMlrgqlj\r\n" -"c5PLSkXBeLE5+fedkyfTaLxxQlgCpuoOhKBm04/R1pWNzUHyqagjO9Q=\r\n" +"o00wSzAJBgNVHRMEAjAAMB0GA1UdDgQWBBRxoQBzckAvVHZeM/xSj7zx3WtGITAf\r\n" +"BgNVHSMEGDAWgBS0WuSls97SUva51aaVD+s+vMf9/zANBgkqhkiG9w0BAQsFAAOC\r\n" +"AQEAlHabem2Tu69VUN7EipwnQn1dIHdgvT5i+iQHpSxY1crPnBbAeSdAXwsVEqLQ\r\n" +"gOOIAQD5VIITNuoGgo4i+4OpNh9u7ZkpRHla+/swsfrFWRRbBNP5Bcu74AGLstwU\r\n" +"zM8gIkBiyfM1Q1qDQISV9trlCG6O8vh8dp/rbI3rfzo99BOHXgFCrzXjCuW4vDsF\r\n" +"r+Dao26bX3sJ6UnEWg1H3o2x6PpUcvQ36h71/bz4TEbbUUEpe02V4QWuL+wrhHJL\r\n" +"U7o3SVE3Og7jPF8sat0a50YUWhwEFI256m02KAXLg89ueUyYKEr6rNwhcvXJpvU9\r\n" +"giIVvd0Sbjjnn7NC4VDbcXV8vw==\r\n" "-----END CERTIFICATE-----\r\n"; const size_t mbedtls_test_cli_crt_rsa_len = sizeof( mbedtls_test_cli_crt_rsa ); +/* tests/data_files/cli-rsa.key */ const char mbedtls_test_cli_key_rsa[] = "-----BEGIN RSA PRIVATE KEY-----\r\n" "MIIEpAIBAAKCAQEAyHTEzLn5tXnpRdkUYLB9u5Pyax6fM60Nj4o8VmXl3ETZzGaF\r\n" diff --git a/thirdparty/mbedtls/library/chacha20.c b/thirdparty/mbedtls/library/chacha20.c index d14a51e044..0757163e2f 100644 --- a/thirdparty/mbedtls/library/chacha20.c +++ b/thirdparty/mbedtls/library/chacha20.c @@ -53,6 +53,12 @@ #define inline __inline #endif +/* Parameter validation macros */ +#define CHACHA20_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA ) +#define CHACHA20_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + #define BYTES_TO_U32_LE( data, offset ) \ ( (uint32_t) data[offset] \ | (uint32_t) ( (uint32_t) data[( offset ) + 1] << 8 ) \ @@ -181,14 +187,13 @@ static void chacha20_block( const uint32_t initial_state[16], void mbedtls_chacha20_init( mbedtls_chacha20_context *ctx ) { - if( ctx != NULL ) - { - mbedtls_platform_zeroize( ctx->state, sizeof( ctx->state ) ); - mbedtls_platform_zeroize( ctx->keystream8, sizeof( ctx->keystream8 ) ); + CHACHA20_VALIDATE( ctx != NULL ); - /* Initially, there's no keystream bytes available */ - ctx->keystream_bytes_used = CHACHA20_BLOCK_SIZE_BYTES; - } + mbedtls_platform_zeroize( ctx->state, sizeof( ctx->state ) ); + mbedtls_platform_zeroize( ctx->keystream8, sizeof( ctx->keystream8 ) ); + + /* Initially, there's no keystream bytes available */ + ctx->keystream_bytes_used = CHACHA20_BLOCK_SIZE_BYTES; } void mbedtls_chacha20_free( mbedtls_chacha20_context *ctx ) @@ -202,10 +207,8 @@ void mbedtls_chacha20_free( mbedtls_chacha20_context *ctx ) int mbedtls_chacha20_setkey( mbedtls_chacha20_context *ctx, const unsigned char key[32] ) { - if( ( ctx == NULL ) || ( key == NULL ) ) - { - return( MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA ); - } + CHACHA20_VALIDATE_RET( ctx != NULL ); + CHACHA20_VALIDATE_RET( key != NULL ); /* ChaCha20 constants - the string "expand 32-byte k" */ ctx->state[0] = 0x61707865; @@ -230,10 +233,8 @@ int mbedtls_chacha20_starts( mbedtls_chacha20_context* ctx, const unsigned char nonce[12], uint32_t counter ) { - if( ( ctx == NULL ) || ( nonce == NULL ) ) - { - return( MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA ); - } + CHACHA20_VALIDATE_RET( ctx != NULL ); + CHACHA20_VALIDATE_RET( nonce != NULL ); /* Counter */ ctx->state[12] = counter; @@ -259,15 +260,9 @@ int mbedtls_chacha20_update( mbedtls_chacha20_context *ctx, size_t offset = 0U; size_t i; - if( ctx == NULL ) - { - return( MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA ); - } - else if( ( size > 0U ) && ( ( input == NULL ) || ( output == NULL ) ) ) - { - /* input and output pointers are allowed to be NULL only if size == 0 */ - return( MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA ); - } + CHACHA20_VALIDATE_RET( ctx != NULL ); + CHACHA20_VALIDATE_RET( size == 0 || input != NULL ); + CHACHA20_VALIDATE_RET( size == 0 || output != NULL ); /* Use leftover keystream bytes, if available */ while( size > 0U && ctx->keystream_bytes_used < CHACHA20_BLOCK_SIZE_BYTES ) @@ -332,6 +327,11 @@ int mbedtls_chacha20_crypt( const unsigned char key[32], mbedtls_chacha20_context ctx; int ret; + CHACHA20_VALIDATE_RET( key != NULL ); + CHACHA20_VALIDATE_RET( nonce != NULL ); + CHACHA20_VALIDATE_RET( data_len == 0 || input != NULL ); + CHACHA20_VALIDATE_RET( data_len == 0 || output != NULL ); + mbedtls_chacha20_init( &ctx ); ret = mbedtls_chacha20_setkey( &ctx, key ); diff --git a/thirdparty/mbedtls/library/chachapoly.c b/thirdparty/mbedtls/library/chachapoly.c index 860f877653..dc643dd618 100644 --- a/thirdparty/mbedtls/library/chachapoly.c +++ b/thirdparty/mbedtls/library/chachapoly.c @@ -44,6 +44,12 @@ #if !defined(MBEDTLS_CHACHAPOLY_ALT) +/* Parameter validation macros */ +#define CHACHAPOLY_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA ) +#define CHACHAPOLY_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + #define CHACHAPOLY_STATE_INIT ( 0 ) #define CHACHAPOLY_STATE_AAD ( 1 ) #define CHACHAPOLY_STATE_CIPHERTEXT ( 2 ) /* Encrypting or decrypting */ @@ -90,39 +96,35 @@ static int chachapoly_pad_ciphertext( mbedtls_chachapoly_context *ctx ) void mbedtls_chachapoly_init( mbedtls_chachapoly_context *ctx ) { - if( ctx != NULL ) - { - mbedtls_chacha20_init( &ctx->chacha20_ctx ); - mbedtls_poly1305_init( &ctx->poly1305_ctx ); - ctx->aad_len = 0U; - ctx->ciphertext_len = 0U; - ctx->state = CHACHAPOLY_STATE_INIT; - ctx->mode = MBEDTLS_CHACHAPOLY_ENCRYPT; - } + CHACHAPOLY_VALIDATE( ctx != NULL ); + + mbedtls_chacha20_init( &ctx->chacha20_ctx ); + mbedtls_poly1305_init( &ctx->poly1305_ctx ); + ctx->aad_len = 0U; + ctx->ciphertext_len = 0U; + ctx->state = CHACHAPOLY_STATE_INIT; + ctx->mode = MBEDTLS_CHACHAPOLY_ENCRYPT; } void mbedtls_chachapoly_free( mbedtls_chachapoly_context *ctx ) { - if( ctx != NULL ) - { - mbedtls_chacha20_free( &ctx->chacha20_ctx ); - mbedtls_poly1305_free( &ctx->poly1305_ctx ); - ctx->aad_len = 0U; - ctx->ciphertext_len = 0U; - ctx->state = CHACHAPOLY_STATE_INIT; - ctx->mode = MBEDTLS_CHACHAPOLY_ENCRYPT; - } + if( ctx == NULL ) + return; + + mbedtls_chacha20_free( &ctx->chacha20_ctx ); + mbedtls_poly1305_free( &ctx->poly1305_ctx ); + ctx->aad_len = 0U; + ctx->ciphertext_len = 0U; + ctx->state = CHACHAPOLY_STATE_INIT; + ctx->mode = MBEDTLS_CHACHAPOLY_ENCRYPT; } int mbedtls_chachapoly_setkey( mbedtls_chachapoly_context *ctx, const unsigned char key[32] ) { int ret; - - if( ( ctx == NULL ) || ( key == NULL ) ) - { - return( MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA ); - } + CHACHAPOLY_VALIDATE_RET( ctx != NULL ); + CHACHAPOLY_VALIDATE_RET( key != NULL ); ret = mbedtls_chacha20_setkey( &ctx->chacha20_ctx, key ); @@ -135,11 +137,8 @@ int mbedtls_chachapoly_starts( mbedtls_chachapoly_context *ctx, { int ret; unsigned char poly1305_key[64]; - - if( ( ctx == NULL ) || ( nonce == NULL ) ) - { - return( MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA ); - } + CHACHAPOLY_VALIDATE_RET( ctx != NULL ); + CHACHAPOLY_VALIDATE_RET( nonce != NULL ); /* Set counter = 0, will be update to 1 when generating Poly1305 key */ ret = mbedtls_chacha20_starts( &ctx->chacha20_ctx, nonce, 0U ); @@ -176,19 +175,11 @@ int mbedtls_chachapoly_update_aad( mbedtls_chachapoly_context *ctx, const unsigned char *aad, size_t aad_len ) { - if( ctx == NULL ) - { - return( MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA ); - } - else if( ( aad_len > 0U ) && ( aad == NULL ) ) - { - /* aad pointer is allowed to be NULL if aad_len == 0 */ - return( MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA ); - } - else if( ctx->state != CHACHAPOLY_STATE_AAD ) - { + CHACHAPOLY_VALIDATE_RET( ctx != NULL ); + CHACHAPOLY_VALIDATE_RET( aad_len == 0 || aad != NULL ); + + if( ctx->state != CHACHAPOLY_STATE_AAD ) return( MBEDTLS_ERR_CHACHAPOLY_BAD_STATE ); - } ctx->aad_len += aad_len; @@ -201,18 +192,12 @@ int mbedtls_chachapoly_update( mbedtls_chachapoly_context *ctx, unsigned char *output ) { int ret; + CHACHAPOLY_VALIDATE_RET( ctx != NULL ); + CHACHAPOLY_VALIDATE_RET( len == 0 || input != NULL ); + CHACHAPOLY_VALIDATE_RET( len == 0 || output != NULL ); - if( ctx == NULL ) - { - return( MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA ); - } - else if( ( len > 0U ) && ( ( input == NULL ) || ( output == NULL ) ) ) - { - /* input and output pointers are allowed to be NULL if len == 0 */ - return( MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA ); - } - else if( ( ctx->state != CHACHAPOLY_STATE_AAD ) && - ( ctx->state != CHACHAPOLY_STATE_CIPHERTEXT ) ) + if( ( ctx->state != CHACHAPOLY_STATE_AAD ) && + ( ctx->state != CHACHAPOLY_STATE_CIPHERTEXT ) ) { return( MBEDTLS_ERR_CHACHAPOLY_BAD_STATE ); } @@ -257,12 +242,10 @@ int mbedtls_chachapoly_finish( mbedtls_chachapoly_context *ctx, { int ret; unsigned char len_block[16]; + CHACHAPOLY_VALIDATE_RET( ctx != NULL ); + CHACHAPOLY_VALIDATE_RET( mac != NULL ); - if( ( ctx == NULL ) || ( mac == NULL ) ) - { - return( MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA ); - } - else if( ctx->state == CHACHAPOLY_STATE_INIT ) + if( ctx->state == CHACHAPOLY_STATE_INIT ) { return( MBEDTLS_ERR_CHACHAPOLY_BAD_STATE ); } @@ -350,6 +333,13 @@ int mbedtls_chachapoly_encrypt_and_tag( mbedtls_chachapoly_context *ctx, unsigned char *output, unsigned char tag[16] ) { + CHACHAPOLY_VALIDATE_RET( ctx != NULL ); + CHACHAPOLY_VALIDATE_RET( nonce != NULL ); + CHACHAPOLY_VALIDATE_RET( tag != NULL ); + CHACHAPOLY_VALIDATE_RET( aad_len == 0 || aad != NULL ); + CHACHAPOLY_VALIDATE_RET( length == 0 || input != NULL ); + CHACHAPOLY_VALIDATE_RET( length == 0 || output != NULL ); + return( chachapoly_crypt_and_tag( ctx, MBEDTLS_CHACHAPOLY_ENCRYPT, length, nonce, aad, aad_len, input, output, tag ) ); @@ -368,9 +358,12 @@ int mbedtls_chachapoly_auth_decrypt( mbedtls_chachapoly_context *ctx, unsigned char check_tag[16]; size_t i; int diff; - - if( tag == NULL ) - return( MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA ); + CHACHAPOLY_VALIDATE_RET( ctx != NULL ); + CHACHAPOLY_VALIDATE_RET( nonce != NULL ); + CHACHAPOLY_VALIDATE_RET( tag != NULL ); + CHACHAPOLY_VALIDATE_RET( aad_len == 0 || aad != NULL ); + CHACHAPOLY_VALIDATE_RET( length == 0 || input != NULL ); + CHACHAPOLY_VALIDATE_RET( length == 0 || output != NULL ); if( ( ret = chachapoly_crypt_and_tag( ctx, MBEDTLS_CHACHAPOLY_DECRYPT, length, nonce, diff --git a/thirdparty/mbedtls/library/cipher.c b/thirdparty/mbedtls/library/cipher.c index 7ae6c4ac5d..273997577b 100644 --- a/thirdparty/mbedtls/library/cipher.c +++ b/thirdparty/mbedtls/library/cipher.c @@ -65,6 +65,11 @@ #define mbedtls_free free #endif +#define CIPHER_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ) +#define CIPHER_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + #if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C) /* Compare the contents of two buffers in constant time. * Returns 0 if the contents are bitwise identical, otherwise returns @@ -81,7 +86,7 @@ static int mbedtls_constant_time_memcmp( const void *v1, const void *v2, size_t for( diff = 0, i = 0; i < len; i++ ) diff |= p1[i] ^ p2[i]; - return (int)diff; + return( (int)diff ); } #endif /* MBEDTLS_GCM_C || MBEDTLS_CHACHAPOLY_C */ @@ -150,6 +155,7 @@ const mbedtls_cipher_info_t *mbedtls_cipher_info_from_values( const mbedtls_ciph void mbedtls_cipher_init( mbedtls_cipher_context_t *ctx ) { + CIPHER_VALIDATE( ctx != NULL ); memset( ctx, 0, sizeof( mbedtls_cipher_context_t ) ); } @@ -175,7 +181,8 @@ void mbedtls_cipher_free( mbedtls_cipher_context_t *ctx ) int mbedtls_cipher_setup( mbedtls_cipher_context_t *ctx, const mbedtls_cipher_info_t *cipher_info ) { - if( NULL == cipher_info || NULL == ctx ) + CIPHER_VALIDATE_RET( ctx != NULL ); + if( cipher_info == NULL ) return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); memset( ctx, 0, sizeof( mbedtls_cipher_context_t ) ); @@ -199,10 +206,16 @@ int mbedtls_cipher_setup( mbedtls_cipher_context_t *ctx, const mbedtls_cipher_in return( 0 ); } -int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx, const unsigned char *key, - int key_bitlen, const mbedtls_operation_t operation ) +int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx, + const unsigned char *key, + int key_bitlen, + const mbedtls_operation_t operation ) { - if( NULL == ctx || NULL == ctx->cipher_info ) + CIPHER_VALIDATE_RET( ctx != NULL ); + CIPHER_VALIDATE_RET( key != NULL ); + CIPHER_VALIDATE_RET( operation == MBEDTLS_ENCRYPT || + operation == MBEDTLS_DECRYPT ); + if( ctx->cipher_info == NULL ) return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); if( ( ctx->cipher_info->flags & MBEDTLS_CIPHER_VARIABLE_KEY_LEN ) == 0 && @@ -222,23 +235,26 @@ int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx, const unsigned char *k MBEDTLS_MODE_OFB == ctx->cipher_info->mode || MBEDTLS_MODE_CTR == ctx->cipher_info->mode ) { - return ctx->cipher_info->base->setkey_enc_func( ctx->cipher_ctx, key, - ctx->key_bitlen ); + return( ctx->cipher_info->base->setkey_enc_func( ctx->cipher_ctx, key, + ctx->key_bitlen ) ); } if( MBEDTLS_DECRYPT == operation ) - return ctx->cipher_info->base->setkey_dec_func( ctx->cipher_ctx, key, - ctx->key_bitlen ); + return( ctx->cipher_info->base->setkey_dec_func( ctx->cipher_ctx, key, + ctx->key_bitlen ) ); return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); } int mbedtls_cipher_set_iv( mbedtls_cipher_context_t *ctx, - const unsigned char *iv, size_t iv_len ) + const unsigned char *iv, + size_t iv_len ) { size_t actual_iv_size; - if( NULL == ctx || NULL == ctx->cipher_info || NULL == iv ) + CIPHER_VALIDATE_RET( ctx != NULL ); + CIPHER_VALIDATE_RET( iv_len == 0 || iv != NULL ); + if( ctx->cipher_info == NULL ) return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); /* avoid buffer overflow in ctx->iv */ @@ -268,15 +284,19 @@ int mbedtls_cipher_set_iv( mbedtls_cipher_context_t *ctx, } #endif - memcpy( ctx->iv, iv, actual_iv_size ); - ctx->iv_size = actual_iv_size; + if ( actual_iv_size != 0 ) + { + memcpy( ctx->iv, iv, actual_iv_size ); + ctx->iv_size = actual_iv_size; + } return( 0 ); } int mbedtls_cipher_reset( mbedtls_cipher_context_t *ctx ) { - if( NULL == ctx || NULL == ctx->cipher_info ) + CIPHER_VALIDATE_RET( ctx != NULL ); + if( ctx->cipher_info == NULL ) return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); ctx->unprocessed_len = 0; @@ -288,14 +308,16 @@ int mbedtls_cipher_reset( mbedtls_cipher_context_t *ctx ) int mbedtls_cipher_update_ad( mbedtls_cipher_context_t *ctx, const unsigned char *ad, size_t ad_len ) { - if( NULL == ctx || NULL == ctx->cipher_info ) + CIPHER_VALIDATE_RET( ctx != NULL ); + CIPHER_VALIDATE_RET( ad_len == 0 || ad != NULL ); + if( ctx->cipher_info == NULL ) return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); #if defined(MBEDTLS_GCM_C) if( MBEDTLS_MODE_GCM == ctx->cipher_info->mode ) { - return mbedtls_gcm_starts( (mbedtls_gcm_context *) ctx->cipher_ctx, ctx->operation, - ctx->iv, ctx->iv_size, ad, ad_len ); + return( mbedtls_gcm_starts( (mbedtls_gcm_context *) ctx->cipher_ctx, ctx->operation, + ctx->iv, ctx->iv_size, ad, ad_len ) ); } #endif @@ -315,8 +337,8 @@ int mbedtls_cipher_update_ad( mbedtls_cipher_context_t *ctx, if ( result != 0 ) return( result ); - return mbedtls_chachapoly_update_aad( (mbedtls_chachapoly_context*) ctx->cipher_ctx, - ad, ad_len ); + return( mbedtls_chachapoly_update_aad( (mbedtls_chachapoly_context*) ctx->cipher_ctx, + ad, ad_len ) ); } #endif @@ -328,12 +350,14 @@ int mbedtls_cipher_update( mbedtls_cipher_context_t *ctx, const unsigned char *i size_t ilen, unsigned char *output, size_t *olen ) { int ret; - size_t block_size = 0; + size_t block_size; - if( NULL == ctx || NULL == ctx->cipher_info || NULL == olen ) - { + CIPHER_VALIDATE_RET( ctx != NULL ); + CIPHER_VALIDATE_RET( ilen == 0 || input != NULL ); + CIPHER_VALIDATE_RET( output != NULL ); + CIPHER_VALIDATE_RET( olen != NULL ); + if( ctx->cipher_info == NULL ) return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); - } *olen = 0; block_size = mbedtls_cipher_get_block_size( ctx ); @@ -358,8 +382,8 @@ int mbedtls_cipher_update( mbedtls_cipher_context_t *ctx, const unsigned char *i if( ctx->cipher_info->mode == MBEDTLS_MODE_GCM ) { *olen = ilen; - return mbedtls_gcm_update( (mbedtls_gcm_context *) ctx->cipher_ctx, ilen, input, - output ); + return( mbedtls_gcm_update( (mbedtls_gcm_context *) ctx->cipher_ctx, ilen, input, + output ) ); } #endif @@ -367,14 +391,14 @@ int mbedtls_cipher_update( mbedtls_cipher_context_t *ctx, const unsigned char *i if ( ctx->cipher_info->type == MBEDTLS_CIPHER_CHACHA20_POLY1305 ) { *olen = ilen; - return mbedtls_chachapoly_update( (mbedtls_chachapoly_context*) ctx->cipher_ctx, - ilen, input, output ); + return( mbedtls_chachapoly_update( (mbedtls_chachapoly_context*) ctx->cipher_ctx, + ilen, input, output ) ); } #endif if ( 0 == block_size ) { - return MBEDTLS_ERR_CIPHER_INVALID_CONTEXT; + return( MBEDTLS_ERR_CIPHER_INVALID_CONTEXT ); } if( input == output && @@ -437,7 +461,7 @@ int mbedtls_cipher_update( mbedtls_cipher_context_t *ctx, const unsigned char *i { if( 0 == block_size ) { - return MBEDTLS_ERR_CIPHER_INVALID_CONTEXT; + return( MBEDTLS_ERR_CIPHER_INVALID_CONTEXT ); } /* Encryption: only cache partial blocks @@ -738,7 +762,10 @@ static int get_no_padding( unsigned char *input, size_t input_len, int mbedtls_cipher_finish( mbedtls_cipher_context_t *ctx, unsigned char *output, size_t *olen ) { - if( NULL == ctx || NULL == ctx->cipher_info || NULL == olen ) + CIPHER_VALIDATE_RET( ctx != NULL ); + CIPHER_VALIDATE_RET( output != NULL ); + CIPHER_VALIDATE_RET( olen != NULL ); + if( ctx->cipher_info == NULL ) return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); *olen = 0; @@ -808,8 +835,8 @@ int mbedtls_cipher_finish( mbedtls_cipher_context_t *ctx, /* Set output size for decryption */ if( MBEDTLS_DECRYPT == ctx->operation ) - return ctx->get_padding( output, mbedtls_cipher_get_block_size( ctx ), - olen ); + return( ctx->get_padding( output, mbedtls_cipher_get_block_size( ctx ), + olen ) ); /* Set output size for encryption */ *olen = mbedtls_cipher_get_block_size( ctx ); @@ -823,10 +850,12 @@ int mbedtls_cipher_finish( mbedtls_cipher_context_t *ctx, } #if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING) -int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx, mbedtls_cipher_padding_t mode ) +int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx, + mbedtls_cipher_padding_t mode ) { - if( NULL == ctx || - MBEDTLS_MODE_CBC != ctx->cipher_info->mode ) + CIPHER_VALIDATE_RET( ctx != NULL ); + + if( NULL == ctx->cipher_info || MBEDTLS_MODE_CBC != ctx->cipher_info->mode ) { return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); } @@ -874,7 +903,9 @@ int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx, mbedtls_ciph int mbedtls_cipher_write_tag( mbedtls_cipher_context_t *ctx, unsigned char *tag, size_t tag_len ) { - if( NULL == ctx || NULL == ctx->cipher_info || NULL == tag ) + CIPHER_VALIDATE_RET( ctx != NULL ); + CIPHER_VALIDATE_RET( tag_len == 0 || tag != NULL ); + if( ctx->cipher_info == NULL ) return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); if( MBEDTLS_ENCRYPT != ctx->operation ) @@ -882,7 +913,8 @@ int mbedtls_cipher_write_tag( mbedtls_cipher_context_t *ctx, #if defined(MBEDTLS_GCM_C) if( MBEDTLS_MODE_GCM == ctx->cipher_info->mode ) - return mbedtls_gcm_finish( (mbedtls_gcm_context *) ctx->cipher_ctx, tag, tag_len ); + return( mbedtls_gcm_finish( (mbedtls_gcm_context *) ctx->cipher_ctx, + tag, tag_len ) ); #endif #if defined(MBEDTLS_CHACHAPOLY_C) @@ -892,8 +924,8 @@ int mbedtls_cipher_write_tag( mbedtls_cipher_context_t *ctx, if ( tag_len != 16U ) return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); - return mbedtls_chachapoly_finish( (mbedtls_chachapoly_context*) ctx->cipher_ctx, - tag ); + return( mbedtls_chachapoly_finish( (mbedtls_chachapoly_context*) ctx->cipher_ctx, + tag ) ); } #endif @@ -906,8 +938,12 @@ int mbedtls_cipher_check_tag( mbedtls_cipher_context_t *ctx, unsigned char check_tag[16]; int ret; - if( NULL == ctx || NULL == ctx->cipher_info || - MBEDTLS_DECRYPT != ctx->operation ) + CIPHER_VALIDATE_RET( ctx != NULL ); + CIPHER_VALIDATE_RET( tag_len == 0 || tag != NULL ); + if( ctx->cipher_info == NULL ) + return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); + + if( MBEDTLS_DECRYPT != ctx->operation ) { return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA ); } @@ -969,6 +1005,12 @@ int mbedtls_cipher_crypt( mbedtls_cipher_context_t *ctx, int ret; size_t finish_olen; + CIPHER_VALIDATE_RET( ctx != NULL ); + CIPHER_VALIDATE_RET( iv_len == 0 || iv != NULL ); + CIPHER_VALIDATE_RET( ilen == 0 || input != NULL ); + CIPHER_VALIDATE_RET( output != NULL ); + CIPHER_VALIDATE_RET( olen != NULL ); + if( ( ret = mbedtls_cipher_set_iv( ctx, iv, iv_len ) ) != 0 ) return( ret ); @@ -997,6 +1039,14 @@ int mbedtls_cipher_auth_encrypt( mbedtls_cipher_context_t *ctx, unsigned char *output, size_t *olen, unsigned char *tag, size_t tag_len ) { + CIPHER_VALIDATE_RET( ctx != NULL ); + CIPHER_VALIDATE_RET( iv != NULL ); + CIPHER_VALIDATE_RET( ad_len == 0 || ad != NULL ); + CIPHER_VALIDATE_RET( ilen == 0 || input != NULL ); + CIPHER_VALIDATE_RET( output != NULL ); + CIPHER_VALIDATE_RET( olen != NULL ); + CIPHER_VALIDATE_RET( tag_len == 0 || tag != NULL ); + #if defined(MBEDTLS_GCM_C) if( MBEDTLS_MODE_GCM == ctx->cipher_info->mode ) { @@ -1044,6 +1094,14 @@ int mbedtls_cipher_auth_decrypt( mbedtls_cipher_context_t *ctx, unsigned char *output, size_t *olen, const unsigned char *tag, size_t tag_len ) { + CIPHER_VALIDATE_RET( ctx != NULL ); + CIPHER_VALIDATE_RET( iv != NULL ); + CIPHER_VALIDATE_RET( ad_len == 0 || ad != NULL ); + CIPHER_VALIDATE_RET( ilen == 0 || input != NULL ); + CIPHER_VALIDATE_RET( output != NULL ); + CIPHER_VALIDATE_RET( olen != NULL ); + CIPHER_VALIDATE_RET( tag_len == 0 || tag != NULL ); + #if defined(MBEDTLS_GCM_C) if( MBEDTLS_MODE_GCM == ctx->cipher_info->mode ) { diff --git a/thirdparty/mbedtls/library/cipher_wrap.c b/thirdparty/mbedtls/library/cipher_wrap.c index 893490acc8..6dd8c5d3a9 100644 --- a/thirdparty/mbedtls/library/cipher_wrap.c +++ b/thirdparty/mbedtls/library/cipher_wrap.c @@ -258,7 +258,7 @@ static const mbedtls_cipher_info_t aes_128_ecb_info = { MBEDTLS_MODE_ECB, 128, "AES-128-ECB", - 16, + 0, 0, 16, &aes_info @@ -269,7 +269,7 @@ static const mbedtls_cipher_info_t aes_192_ecb_info = { MBEDTLS_MODE_ECB, 192, "AES-192-ECB", - 16, + 0, 0, 16, &aes_info @@ -280,7 +280,7 @@ static const mbedtls_cipher_info_t aes_256_ecb_info = { MBEDTLS_MODE_ECB, 256, "AES-256-ECB", - 16, + 0, 0, 16, &aes_info diff --git a/thirdparty/mbedtls/library/ctr_drbg.c b/thirdparty/mbedtls/library/ctr_drbg.c index d0e5ba862d..fb121575bb 100644 --- a/thirdparty/mbedtls/library/ctr_drbg.c +++ b/thirdparty/mbedtls/library/ctr_drbg.c @@ -66,6 +66,18 @@ void mbedtls_ctr_drbg_init( mbedtls_ctr_drbg_context *ctx ) * Non-public function wrapped by mbedtls_ctr_drbg_seed(). Necessary to allow * NIST tests to succeed (which require known length fixed entropy) */ +/* CTR_DRBG_Instantiate with derivation function (SP 800-90A §10.2.1.3.2) + * mbedtls_ctr_drbg_seed_entropy_len(ctx, f_entropy, p_entropy, + * custom, len, entropy_len) + * implements + * CTR_DRBG_Instantiate(entropy_input, nonce, personalization_string, + * security_strength) -> initial_working_state + * with inputs + * custom[:len] = nonce || personalization_string + * where entropy_input comes from f_entropy for entropy_len bytes + * and with outputs + * ctx = initial_working_state + */ int mbedtls_ctr_drbg_seed_entropy_len( mbedtls_ctr_drbg_context *ctx, int (*f_entropy)(void *, unsigned char *, size_t), @@ -256,6 +268,14 @@ exit: return( ret ); } +/* CTR_DRBG_Update (SP 800-90A §10.2.1.2) + * ctr_drbg_update_internal(ctx, provided_data) + * implements + * CTR_DRBG_Update(provided_data, Key, V) + * with inputs and outputs + * ctx->aes_ctx = Key + * ctx->counter = V + */ static int ctr_drbg_update_internal( mbedtls_ctr_drbg_context *ctx, const unsigned char data[MBEDTLS_CTR_DRBG_SEEDLEN] ) { @@ -279,9 +299,7 @@ static int ctr_drbg_update_internal( mbedtls_ctr_drbg_context *ctx, * Crypt counter block */ if( ( ret = mbedtls_aes_crypt_ecb( &ctx->aes_ctx, MBEDTLS_AES_ENCRYPT, ctx->counter, p ) ) != 0 ) - { - return( ret ); - } + goto exit; p += MBEDTLS_CTR_DRBG_BLOCKSIZE; } @@ -293,31 +311,71 @@ static int ctr_drbg_update_internal( mbedtls_ctr_drbg_context *ctx, * Update key and counter */ if( ( ret = mbedtls_aes_setkey_enc( &ctx->aes_ctx, tmp, MBEDTLS_CTR_DRBG_KEYBITS ) ) != 0 ) - { - return( ret ); - } + goto exit; memcpy( ctx->counter, tmp + MBEDTLS_CTR_DRBG_KEYSIZE, MBEDTLS_CTR_DRBG_BLOCKSIZE ); - return( 0 ); +exit: + mbedtls_platform_zeroize( tmp, sizeof( tmp ) ); + return( ret ); } -void mbedtls_ctr_drbg_update( mbedtls_ctr_drbg_context *ctx, - const unsigned char *additional, size_t add_len ) +/* CTR_DRBG_Instantiate with derivation function (SP 800-90A §10.2.1.3.2) + * mbedtls_ctr_drbg_update(ctx, additional, add_len) + * implements + * CTR_DRBG_Instantiate(entropy_input, nonce, personalization_string, + * security_strength) -> initial_working_state + * with inputs + * ctx->counter = all-bits-0 + * ctx->aes_ctx = context from all-bits-0 key + * additional[:add_len] = entropy_input || nonce || personalization_string + * and with outputs + * ctx = initial_working_state + */ +int mbedtls_ctr_drbg_update_ret( mbedtls_ctr_drbg_context *ctx, + const unsigned char *additional, + size_t add_len ) { unsigned char add_input[MBEDTLS_CTR_DRBG_SEEDLEN]; + int ret; - if( add_len > 0 ) - { - /* MAX_INPUT would be more logical here, but we have to match - * block_cipher_df()'s limits since we can't propagate errors */ - if( add_len > MBEDTLS_CTR_DRBG_MAX_SEED_INPUT ) - add_len = MBEDTLS_CTR_DRBG_MAX_SEED_INPUT; + if( add_len == 0 ) + return( 0 ); - block_cipher_df( add_input, additional, add_len ); - ctr_drbg_update_internal( ctx, add_input ); - } + if( ( ret = block_cipher_df( add_input, additional, add_len ) ) != 0 ) + goto exit; + if( ( ret = ctr_drbg_update_internal( ctx, add_input ) ) != 0 ) + goto exit; + +exit: + mbedtls_platform_zeroize( add_input, sizeof( add_input ) ); + return( ret ); } +#if !defined(MBEDTLS_DEPRECATED_REMOVED) +void mbedtls_ctr_drbg_update( mbedtls_ctr_drbg_context *ctx, + const unsigned char *additional, + size_t add_len ) +{ + /* MAX_INPUT would be more logical here, but we have to match + * block_cipher_df()'s limits since we can't propagate errors */ + if( add_len > MBEDTLS_CTR_DRBG_MAX_SEED_INPUT ) + add_len = MBEDTLS_CTR_DRBG_MAX_SEED_INPUT; + (void) mbedtls_ctr_drbg_update_ret( ctx, additional, add_len ); +} +#endif /* MBEDTLS_DEPRECATED_REMOVED */ + +/* CTR_DRBG_Reseed with derivation function (SP 800-90A §10.2.1.4.2) + * mbedtls_ctr_drbg_reseed(ctx, additional, len) + * implements + * CTR_DRBG_Reseed(working_state, entropy_input, additional_input) + * -> new_working_state + * with inputs + * ctx contains working_state + * additional[:len] = additional_input + * and entropy_input comes from calling ctx->f_entropy + * and with output + * ctx contains new_working_state + */ int mbedtls_ctr_drbg_reseed( mbedtls_ctr_drbg_context *ctx, const unsigned char *additional, size_t len ) { @@ -355,22 +413,39 @@ int mbedtls_ctr_drbg_reseed( mbedtls_ctr_drbg_context *ctx, * Reduce to 384 bits */ if( ( ret = block_cipher_df( seed, seed, seedlen ) ) != 0 ) - { - return( ret ); - } + goto exit; /* * Update state */ if( ( ret = ctr_drbg_update_internal( ctx, seed ) ) != 0 ) - { - return( ret ); - } + goto exit; ctx->reseed_counter = 1; - return( 0 ); +exit: + mbedtls_platform_zeroize( seed, sizeof( seed ) ); + return( ret ); } +/* CTR_DRBG_Generate with derivation function (SP 800-90A §10.2.1.5.2) + * mbedtls_ctr_drbg_random_with_add(ctx, output, output_len, additional, add_len) + * implements + * CTR_DRBG_Reseed(working_state, entropy_input, additional[:add_len]) + * -> working_state_after_reseed + * if required, then + * CTR_DRBG_Generate(working_state_after_reseed, + * requested_number_of_bits, additional_input) + * -> status, returned_bits, new_working_state + * with inputs + * ctx contains working_state + * requested_number_of_bits = 8 * output_len + * additional[:add_len] = additional_input + * and entropy_input comes from calling ctx->f_entropy + * and with outputs + * status = SUCCESS (this function does the reseed internally) + * returned_bits = output[:output_len] + * ctx contains new_working_state + */ int mbedtls_ctr_drbg_random_with_add( void *p_rng, unsigned char *output, size_t output_len, const unsigned char *additional, size_t add_len ) @@ -404,13 +479,9 @@ int mbedtls_ctr_drbg_random_with_add( void *p_rng, if( add_len > 0 ) { if( ( ret = block_cipher_df( add_input, additional, add_len ) ) != 0 ) - { - return( ret ); - } + goto exit; if( ( ret = ctr_drbg_update_internal( ctx, add_input ) ) != 0 ) - { - return( ret ); - } + goto exit; } while( output_len > 0 ) @@ -426,9 +497,7 @@ int mbedtls_ctr_drbg_random_with_add( void *p_rng, * Crypt counter block */ if( ( ret = mbedtls_aes_crypt_ecb( &ctx->aes_ctx, MBEDTLS_AES_ENCRYPT, ctx->counter, tmp ) ) != 0 ) - { - return( ret ); - } + goto exit; use_len = ( output_len > MBEDTLS_CTR_DRBG_BLOCKSIZE ) ? MBEDTLS_CTR_DRBG_BLOCKSIZE : output_len; @@ -441,12 +510,13 @@ int mbedtls_ctr_drbg_random_with_add( void *p_rng, } if( ( ret = ctr_drbg_update_internal( ctx, add_input ) ) != 0 ) - { - return( ret ); - } + goto exit; ctx->reseed_counter++; +exit: + mbedtls_platform_zeroize( add_input, sizeof( add_input ) ); + mbedtls_platform_zeroize( tmp, sizeof( tmp ) ); return( 0 ); } @@ -498,35 +568,36 @@ exit: int mbedtls_ctr_drbg_update_seed_file( mbedtls_ctr_drbg_context *ctx, const char *path ) { int ret = 0; - FILE *f; + FILE *f = NULL; size_t n; unsigned char buf[ MBEDTLS_CTR_DRBG_MAX_INPUT ]; + unsigned char c; if( ( f = fopen( path, "rb" ) ) == NULL ) return( MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR ); - fseek( f, 0, SEEK_END ); - n = (size_t) ftell( f ); - fseek( f, 0, SEEK_SET ); - - if( n > MBEDTLS_CTR_DRBG_MAX_INPUT ) + n = fread( buf, 1, sizeof( buf ), f ); + if( fread( &c, 1, 1, f ) != 0 ) { - fclose( f ); - return( MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG ); + ret = MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG; + goto exit; } - - if( fread( buf, 1, n, f ) != n ) + if( n == 0 || ferror( f ) ) + { ret = MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR; - else - mbedtls_ctr_drbg_update( ctx, buf, n ); - + goto exit; + } fclose( f ); + f = NULL; - mbedtls_platform_zeroize( buf, sizeof( buf ) ); + ret = mbedtls_ctr_drbg_update_ret( ctx, buf, n ); +exit: + mbedtls_platform_zeroize( buf, sizeof( buf ) ); + if( f != NULL ) + fclose( f ); if( ret != 0 ) return( ret ); - return( mbedtls_ctr_drbg_write_seed_file( ctx, path ) ); } #endif /* MBEDTLS_FS_IO */ diff --git a/thirdparty/mbedtls/library/debug.c b/thirdparty/mbedtls/library/debug.c index db3924ac54..824cd0236e 100644 --- a/thirdparty/mbedtls/library/debug.c +++ b/thirdparty/mbedtls/library/debug.c @@ -365,4 +365,54 @@ void mbedtls_debug_print_crt( const mbedtls_ssl_context *ssl, int level, } #endif /* MBEDTLS_X509_CRT_PARSE_C */ +#if defined(MBEDTLS_ECDH_C) +static void mbedtls_debug_printf_ecdh_internal( const mbedtls_ssl_context *ssl, + int level, const char *file, + int line, + const mbedtls_ecdh_context *ecdh, + mbedtls_debug_ecdh_attr attr ) +{ +#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT) + const mbedtls_ecdh_context* ctx = ecdh; +#else + const mbedtls_ecdh_context_mbed* ctx = &ecdh->ctx.mbed_ecdh; +#endif + + switch( attr ) + { + case MBEDTLS_DEBUG_ECDH_Q: + mbedtls_debug_print_ecp( ssl, level, file, line, "ECDH: Q", + &ctx->Q ); + break; + case MBEDTLS_DEBUG_ECDH_QP: + mbedtls_debug_print_ecp( ssl, level, file, line, "ECDH: Qp", + &ctx->Qp ); + break; + case MBEDTLS_DEBUG_ECDH_Z: + mbedtls_debug_print_mpi( ssl, level, file, line, "ECDH: z", + &ctx->z ); + break; + default: + break; + } +} + +void mbedtls_debug_printf_ecdh( const mbedtls_ssl_context *ssl, int level, + const char *file, int line, + const mbedtls_ecdh_context *ecdh, + mbedtls_debug_ecdh_attr attr ) +{ +#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT) + mbedtls_debug_printf_ecdh_internal( ssl, level, file, line, ecdh, attr ); +#else + switch( ecdh->var ) + { + default: + mbedtls_debug_printf_ecdh_internal( ssl, level, file, line, ecdh, + attr ); + } +#endif +} +#endif /* MBEDTLS_ECDH_C */ + #endif /* MBEDTLS_DEBUG_C */ diff --git a/thirdparty/mbedtls/library/dhm.c b/thirdparty/mbedtls/library/dhm.c index 82cbb0ce88..fb6937e854 100644 --- a/thirdparty/mbedtls/library/dhm.c +++ b/thirdparty/mbedtls/library/dhm.c @@ -60,6 +60,11 @@ #if !defined(MBEDTLS_DHM_ALT) +#define DHM_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_DHM_BAD_INPUT_DATA ) +#define DHM_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + /* * helper to validate the mbedtls_mpi size and import it */ @@ -121,6 +126,7 @@ cleanup: void mbedtls_dhm_init( mbedtls_dhm_context *ctx ) { + DHM_VALIDATE( ctx != NULL ); memset( ctx, 0, sizeof( mbedtls_dhm_context ) ); } @@ -132,6 +138,9 @@ int mbedtls_dhm_read_params( mbedtls_dhm_context *ctx, const unsigned char *end ) { int ret; + DHM_VALIDATE_RET( ctx != NULL ); + DHM_VALIDATE_RET( p != NULL && *p != NULL ); + DHM_VALIDATE_RET( end != NULL ); if( ( ret = dhm_read_bignum( &ctx->P, p, end ) ) != 0 || ( ret = dhm_read_bignum( &ctx->G, p, end ) ) != 0 || @@ -157,6 +166,10 @@ int mbedtls_dhm_make_params( mbedtls_dhm_context *ctx, int x_size, int ret, count = 0; size_t n1, n2, n3; unsigned char *p; + DHM_VALIDATE_RET( ctx != NULL ); + DHM_VALIDATE_RET( output != NULL ); + DHM_VALIDATE_RET( olen != NULL ); + DHM_VALIDATE_RET( f_rng != NULL ); if( mbedtls_mpi_cmp_int( &ctx->P, 0 ) == 0 ) return( MBEDTLS_ERR_DHM_BAD_INPUT_DATA ); @@ -227,9 +240,9 @@ int mbedtls_dhm_set_group( mbedtls_dhm_context *ctx, const mbedtls_mpi *G ) { int ret; - - if( ctx == NULL || P == NULL || G == NULL ) - return( MBEDTLS_ERR_DHM_BAD_INPUT_DATA ); + DHM_VALIDATE_RET( ctx != NULL ); + DHM_VALIDATE_RET( P != NULL ); + DHM_VALIDATE_RET( G != NULL ); if( ( ret = mbedtls_mpi_copy( &ctx->P, P ) ) != 0 || ( ret = mbedtls_mpi_copy( &ctx->G, G ) ) != 0 ) @@ -248,8 +261,10 @@ int mbedtls_dhm_read_public( mbedtls_dhm_context *ctx, const unsigned char *input, size_t ilen ) { int ret; + DHM_VALIDATE_RET( ctx != NULL ); + DHM_VALIDATE_RET( input != NULL ); - if( ctx == NULL || ilen < 1 || ilen > ctx->len ) + if( ilen < 1 || ilen > ctx->len ) return( MBEDTLS_ERR_DHM_BAD_INPUT_DATA ); if( ( ret = mbedtls_mpi_read_binary( &ctx->GY, input, ilen ) ) != 0 ) @@ -267,8 +282,11 @@ int mbedtls_dhm_make_public( mbedtls_dhm_context *ctx, int x_size, void *p_rng ) { int ret, count = 0; + DHM_VALIDATE_RET( ctx != NULL ); + DHM_VALIDATE_RET( output != NULL ); + DHM_VALIDATE_RET( f_rng != NULL ); - if( ctx == NULL || olen < 1 || olen > ctx->len ) + if( olen < 1 || olen > ctx->len ) return( MBEDTLS_ERR_DHM_BAD_INPUT_DATA ); if( mbedtls_mpi_cmp_int( &ctx->P, 0 ) == 0 ) @@ -380,8 +398,11 @@ int mbedtls_dhm_calc_secret( mbedtls_dhm_context *ctx, { int ret; mbedtls_mpi GYb; + DHM_VALIDATE_RET( ctx != NULL ); + DHM_VALIDATE_RET( output != NULL ); + DHM_VALIDATE_RET( olen != NULL ); - if( ctx == NULL || output_size < ctx->len ) + if( output_size < ctx->len ) return( MBEDTLS_ERR_DHM_BAD_INPUT_DATA ); if( ( ret = dhm_check_range( &ctx->GY, &ctx->P ) ) != 0 ) @@ -428,11 +449,19 @@ cleanup: */ void mbedtls_dhm_free( mbedtls_dhm_context *ctx ) { - mbedtls_mpi_free( &ctx->pX ); mbedtls_mpi_free( &ctx->Vf ); - mbedtls_mpi_free( &ctx->Vi ); mbedtls_mpi_free( &ctx->RP ); - mbedtls_mpi_free( &ctx->K ); mbedtls_mpi_free( &ctx->GY ); - mbedtls_mpi_free( &ctx->GX ); mbedtls_mpi_free( &ctx->X ); - mbedtls_mpi_free( &ctx->G ); mbedtls_mpi_free( &ctx->P ); + if( ctx == NULL ) + return; + + mbedtls_mpi_free( &ctx->pX ); + mbedtls_mpi_free( &ctx->Vf ); + mbedtls_mpi_free( &ctx->Vi ); + mbedtls_mpi_free( &ctx->RP ); + mbedtls_mpi_free( &ctx->K ); + mbedtls_mpi_free( &ctx->GY ); + mbedtls_mpi_free( &ctx->GX ); + mbedtls_mpi_free( &ctx->X ); + mbedtls_mpi_free( &ctx->G ); + mbedtls_mpi_free( &ctx->P ); mbedtls_platform_zeroize( ctx, sizeof( mbedtls_dhm_context ) ); } @@ -449,7 +478,12 @@ int mbedtls_dhm_parse_dhm( mbedtls_dhm_context *dhm, const unsigned char *dhmin, unsigned char *p, *end; #if defined(MBEDTLS_PEM_PARSE_C) mbedtls_pem_context pem; +#endif /* MBEDTLS_PEM_PARSE_C */ + + DHM_VALIDATE_RET( dhm != NULL ); + DHM_VALIDATE_RET( dhmin != NULL ); +#if defined(MBEDTLS_PEM_PARSE_C) mbedtls_pem_init( &pem ); /* Avoid calling mbedtls_pem_read_buffer() on non-null-terminated string */ @@ -596,6 +630,8 @@ int mbedtls_dhm_parse_dhmfile( mbedtls_dhm_context *dhm, const char *path ) int ret; size_t n; unsigned char *buf; + DHM_VALIDATE_RET( dhm != NULL ); + DHM_VALIDATE_RET( path != NULL ); if( ( ret = load_file( path, &buf, &n ) ) != 0 ) return( ret ); diff --git a/thirdparty/mbedtls/library/ecdh.c b/thirdparty/mbedtls/library/ecdh.c index 61380b6936..da95c60dad 100644 --- a/thirdparty/mbedtls/library/ecdh.c +++ b/thirdparty/mbedtls/library/ecdh.c @@ -35,41 +35,82 @@ #if defined(MBEDTLS_ECDH_C) #include "mbedtls/ecdh.h" +#include "mbedtls/platform_util.h" #include <string.h> +/* Parameter validation macros based on platform_util.h */ +#define ECDH_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_ECP_BAD_INPUT_DATA ) +#define ECDH_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + +#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT) +typedef mbedtls_ecdh_context mbedtls_ecdh_context_mbed; +#endif + #if !defined(MBEDTLS_ECDH_GEN_PUBLIC_ALT) /* - * Generate public key: simple wrapper around mbedtls_ecp_gen_keypair + * Generate public key (restartable version) + * + * Note: this internal function relies on its caller preserving the value of + * the output parameter 'd' across continuation calls. This would not be + * acceptable for a public function but is OK here as we control call sites. + */ +static int ecdh_gen_public_restartable( mbedtls_ecp_group *grp, + mbedtls_mpi *d, mbedtls_ecp_point *Q, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng, + mbedtls_ecp_restart_ctx *rs_ctx ) +{ + int ret; + + /* If multiplication is in progress, we already generated a privkey */ +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx == NULL || rs_ctx->rsm == NULL ) +#endif + MBEDTLS_MPI_CHK( mbedtls_ecp_gen_privkey( grp, d, f_rng, p_rng ) ); + + MBEDTLS_MPI_CHK( mbedtls_ecp_mul_restartable( grp, Q, d, &grp->G, + f_rng, p_rng, rs_ctx ) ); + +cleanup: + return( ret ); +} + +/* + * Generate public key */ int mbedtls_ecdh_gen_public( mbedtls_ecp_group *grp, mbedtls_mpi *d, mbedtls_ecp_point *Q, int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) { - return mbedtls_ecp_gen_keypair( grp, d, Q, f_rng, p_rng ); + ECDH_VALIDATE_RET( grp != NULL ); + ECDH_VALIDATE_RET( d != NULL ); + ECDH_VALIDATE_RET( Q != NULL ); + ECDH_VALIDATE_RET( f_rng != NULL ); + return( ecdh_gen_public_restartable( grp, d, Q, f_rng, p_rng, NULL ) ); } -#endif /* MBEDTLS_ECDH_GEN_PUBLIC_ALT */ +#endif /* !MBEDTLS_ECDH_GEN_PUBLIC_ALT */ #if !defined(MBEDTLS_ECDH_COMPUTE_SHARED_ALT) /* * Compute shared secret (SEC1 3.3.1) */ -int mbedtls_ecdh_compute_shared( mbedtls_ecp_group *grp, mbedtls_mpi *z, +static int ecdh_compute_shared_restartable( mbedtls_ecp_group *grp, + mbedtls_mpi *z, const mbedtls_ecp_point *Q, const mbedtls_mpi *d, int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) + void *p_rng, + mbedtls_ecp_restart_ctx *rs_ctx ) { int ret; mbedtls_ecp_point P; mbedtls_ecp_point_init( &P ); - /* - * Make sure Q is a valid pubkey before using it - */ - MBEDTLS_MPI_CHK( mbedtls_ecp_check_pubkey( grp, Q ) ); - - MBEDTLS_MPI_CHK( mbedtls_ecp_mul( grp, &P, d, Q, f_rng, p_rng ) ); + MBEDTLS_MPI_CHK( mbedtls_ecp_mul_restartable( grp, &P, d, Q, + f_rng, p_rng, rs_ctx ) ); if( mbedtls_ecp_is_zero( &P ) ) { @@ -84,65 +125,195 @@ cleanup: return( ret ); } -#endif /* MBEDTLS_ECDH_COMPUTE_SHARED_ALT */ + +/* + * Compute shared secret (SEC1 3.3.1) + */ +int mbedtls_ecdh_compute_shared( mbedtls_ecp_group *grp, mbedtls_mpi *z, + const mbedtls_ecp_point *Q, const mbedtls_mpi *d, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng ) +{ + ECDH_VALIDATE_RET( grp != NULL ); + ECDH_VALIDATE_RET( Q != NULL ); + ECDH_VALIDATE_RET( d != NULL ); + ECDH_VALIDATE_RET( z != NULL ); + return( ecdh_compute_shared_restartable( grp, z, Q, d, + f_rng, p_rng, NULL ) ); +} +#endif /* !MBEDTLS_ECDH_COMPUTE_SHARED_ALT */ + +static void ecdh_init_internal( mbedtls_ecdh_context_mbed *ctx ) +{ + mbedtls_ecp_group_init( &ctx->grp ); + mbedtls_mpi_init( &ctx->d ); + mbedtls_ecp_point_init( &ctx->Q ); + mbedtls_ecp_point_init( &ctx->Qp ); + mbedtls_mpi_init( &ctx->z ); + +#if defined(MBEDTLS_ECP_RESTARTABLE) + mbedtls_ecp_restart_init( &ctx->rs ); +#endif +} /* * Initialize context */ void mbedtls_ecdh_init( mbedtls_ecdh_context *ctx ) { + ECDH_VALIDATE( ctx != NULL ); + +#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT) + ecdh_init_internal( ctx ); + mbedtls_ecp_point_init( &ctx->Vi ); + mbedtls_ecp_point_init( &ctx->Vf ); + mbedtls_mpi_init( &ctx->_d ); +#else memset( ctx, 0, sizeof( mbedtls_ecdh_context ) ); + + ctx->var = MBEDTLS_ECDH_VARIANT_NONE; +#endif + ctx->point_format = MBEDTLS_ECP_PF_UNCOMPRESSED; +#if defined(MBEDTLS_ECP_RESTARTABLE) + ctx->restart_enabled = 0; +#endif +} + +static int ecdh_setup_internal( mbedtls_ecdh_context_mbed *ctx, + mbedtls_ecp_group_id grp_id ) +{ + int ret; + + ret = mbedtls_ecp_group_load( &ctx->grp, grp_id ); + if( ret != 0 ) + { + return( MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE ); + } + + return( 0 ); } /* - * Free context + * Setup context */ -void mbedtls_ecdh_free( mbedtls_ecdh_context *ctx ) +int mbedtls_ecdh_setup( mbedtls_ecdh_context *ctx, mbedtls_ecp_group_id grp_id ) { - if( ctx == NULL ) - return; + ECDH_VALIDATE_RET( ctx != NULL ); +#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT) + return( ecdh_setup_internal( ctx, grp_id ) ); +#else + switch( grp_id ) + { + default: + ctx->point_format = MBEDTLS_ECP_PF_UNCOMPRESSED; + ctx->var = MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0; + ctx->grp_id = grp_id; + ecdh_init_internal( &ctx->ctx.mbed_ecdh ); + return( ecdh_setup_internal( &ctx->ctx.mbed_ecdh, grp_id ) ); + } +#endif +} + +static void ecdh_free_internal( mbedtls_ecdh_context_mbed *ctx ) +{ mbedtls_ecp_group_free( &ctx->grp ); + mbedtls_mpi_free( &ctx->d ); mbedtls_ecp_point_free( &ctx->Q ); mbedtls_ecp_point_free( &ctx->Qp ); - mbedtls_ecp_point_free( &ctx->Vi ); - mbedtls_ecp_point_free( &ctx->Vf ); - mbedtls_mpi_free( &ctx->d ); mbedtls_mpi_free( &ctx->z ); - mbedtls_mpi_free( &ctx->_d ); + +#if defined(MBEDTLS_ECP_RESTARTABLE) + mbedtls_ecp_restart_free( &ctx->rs ); +#endif } +#if defined(MBEDTLS_ECP_RESTARTABLE) /* - * Setup and write the ServerKeyExhange parameters (RFC 4492) - * struct { - * ECParameters curve_params; - * ECPoint public; - * } ServerECDHParams; + * Enable restartable operations for context */ -int mbedtls_ecdh_make_params( mbedtls_ecdh_context *ctx, size_t *olen, - unsigned char *buf, size_t blen, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) +void mbedtls_ecdh_enable_restart( mbedtls_ecdh_context *ctx ) +{ + ECDH_VALIDATE( ctx != NULL ); + + ctx->restart_enabled = 1; +} +#endif + +/* + * Free context + */ +void mbedtls_ecdh_free( mbedtls_ecdh_context *ctx ) +{ + if( ctx == NULL ) + return; + +#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT) + mbedtls_ecp_point_free( &ctx->Vi ); + mbedtls_ecp_point_free( &ctx->Vf ); + mbedtls_mpi_free( &ctx->_d ); + ecdh_free_internal( ctx ); +#else + switch( ctx->var ) + { + case MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0: + ecdh_free_internal( &ctx->ctx.mbed_ecdh ); + break; + default: + break; + } + + ctx->point_format = MBEDTLS_ECP_PF_UNCOMPRESSED; + ctx->var = MBEDTLS_ECDH_VARIANT_NONE; + ctx->grp_id = MBEDTLS_ECP_DP_NONE; +#endif +} + +static int ecdh_make_params_internal( mbedtls_ecdh_context_mbed *ctx, + size_t *olen, int point_format, + unsigned char *buf, size_t blen, + int (*f_rng)(void *, + unsigned char *, + size_t), + void *p_rng, + int restart_enabled ) { int ret; size_t grp_len, pt_len; +#if defined(MBEDTLS_ECP_RESTARTABLE) + mbedtls_ecp_restart_ctx *rs_ctx = NULL; +#endif - if( ctx == NULL || ctx->grp.pbits == 0 ) + if( ctx->grp.pbits == 0 ) return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA ); - if( ( ret = mbedtls_ecdh_gen_public( &ctx->grp, &ctx->d, &ctx->Q, f_rng, p_rng ) ) - != 0 ) +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( restart_enabled ) + rs_ctx = &ctx->rs; +#else + (void) restart_enabled; +#endif + + +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( ( ret = ecdh_gen_public_restartable( &ctx->grp, &ctx->d, &ctx->Q, + f_rng, p_rng, rs_ctx ) ) != 0 ) return( ret ); +#else + if( ( ret = mbedtls_ecdh_gen_public( &ctx->grp, &ctx->d, &ctx->Q, + f_rng, p_rng ) ) != 0 ) + return( ret ); +#endif /* MBEDTLS_ECP_RESTARTABLE */ - if( ( ret = mbedtls_ecp_tls_write_group( &ctx->grp, &grp_len, buf, blen ) ) - != 0 ) + if( ( ret = mbedtls_ecp_tls_write_group( &ctx->grp, &grp_len, buf, + blen ) ) != 0 ) return( ret ); buf += grp_len; blen -= grp_len; - if( ( ret = mbedtls_ecp_tls_write_point( &ctx->grp, &ctx->Q, ctx->point_format, - &pt_len, buf, blen ) ) != 0 ) + if( ( ret = mbedtls_ecp_tls_write_point( &ctx->grp, &ctx->Q, point_format, + &pt_len, buf, blen ) ) != 0 ) return( ret ); *olen = grp_len + pt_len; @@ -150,6 +321,55 @@ int mbedtls_ecdh_make_params( mbedtls_ecdh_context *ctx, size_t *olen, } /* + * Setup and write the ServerKeyExhange parameters (RFC 4492) + * struct { + * ECParameters curve_params; + * ECPoint public; + * } ServerECDHParams; + */ +int mbedtls_ecdh_make_params( mbedtls_ecdh_context *ctx, size_t *olen, + unsigned char *buf, size_t blen, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng ) +{ + int restart_enabled = 0; + ECDH_VALIDATE_RET( ctx != NULL ); + ECDH_VALIDATE_RET( olen != NULL ); + ECDH_VALIDATE_RET( buf != NULL ); + ECDH_VALIDATE_RET( f_rng != NULL ); + +#if defined(MBEDTLS_ECP_RESTARTABLE) + restart_enabled = ctx->restart_enabled; +#else + (void) restart_enabled; +#endif + +#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT) + return( ecdh_make_params_internal( ctx, olen, ctx->point_format, buf, blen, + f_rng, p_rng, restart_enabled ) ); +#else + switch( ctx->var ) + { + case MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0: + return( ecdh_make_params_internal( &ctx->ctx.mbed_ecdh, olen, + ctx->point_format, buf, blen, + f_rng, p_rng, + restart_enabled ) ); + default: + return MBEDTLS_ERR_ECP_BAD_INPUT_DATA; + } +#endif +} + +static int ecdh_read_params_internal( mbedtls_ecdh_context_mbed *ctx, + const unsigned char **buf, + const unsigned char *end ) +{ + return( mbedtls_ecp_tls_read_point( &ctx->grp, &ctx->Qp, buf, + end - *buf ) ); +} + +/* * Read the ServerKeyExhange parameters (RFC 4492) * struct { * ECParameters curve_params; @@ -157,31 +377,43 @@ int mbedtls_ecdh_make_params( mbedtls_ecdh_context *ctx, size_t *olen, * } ServerECDHParams; */ int mbedtls_ecdh_read_params( mbedtls_ecdh_context *ctx, - const unsigned char **buf, const unsigned char *end ) + const unsigned char **buf, + const unsigned char *end ) { int ret; - - if( ( ret = mbedtls_ecp_tls_read_group( &ctx->grp, buf, end - *buf ) ) != 0 ) + mbedtls_ecp_group_id grp_id; + ECDH_VALIDATE_RET( ctx != NULL ); + ECDH_VALIDATE_RET( buf != NULL ); + ECDH_VALIDATE_RET( *buf != NULL ); + ECDH_VALIDATE_RET( end != NULL ); + + if( ( ret = mbedtls_ecp_tls_read_group_id( &grp_id, buf, end - *buf ) ) + != 0 ) return( ret ); - if( ( ret = mbedtls_ecp_tls_read_point( &ctx->grp, &ctx->Qp, buf, end - *buf ) ) - != 0 ) + if( ( ret = mbedtls_ecdh_setup( ctx, grp_id ) ) != 0 ) return( ret ); - return( 0 ); +#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT) + return( ecdh_read_params_internal( ctx, buf, end ) ); +#else + switch( ctx->var ) + { + case MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0: + return( ecdh_read_params_internal( &ctx->ctx.mbed_ecdh, + buf, end ) ); + default: + return MBEDTLS_ERR_ECP_BAD_INPUT_DATA; + } +#endif } -/* - * Get parameters from a keypair - */ -int mbedtls_ecdh_get_params( mbedtls_ecdh_context *ctx, const mbedtls_ecp_keypair *key, - mbedtls_ecdh_side side ) +static int ecdh_get_params_internal( mbedtls_ecdh_context_mbed *ctx, + const mbedtls_ecp_keypair *key, + mbedtls_ecdh_side side ) { int ret; - if( ( ret = mbedtls_ecp_group_copy( &ctx->grp, &key->grp ) ) != 0 ) - return( ret ); - /* If it's not our key, just import the public part as Qp */ if( side == MBEDTLS_ECDH_THEIRS ) return( mbedtls_ecp_copy( &ctx->Qp, &key->Q ) ); @@ -198,39 +430,116 @@ int mbedtls_ecdh_get_params( mbedtls_ecdh_context *ctx, const mbedtls_ecp_keypai } /* - * Setup and export the client public value + * Get parameters from a keypair */ -int mbedtls_ecdh_make_public( mbedtls_ecdh_context *ctx, size_t *olen, - unsigned char *buf, size_t blen, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) +int mbedtls_ecdh_get_params( mbedtls_ecdh_context *ctx, + const mbedtls_ecp_keypair *key, + mbedtls_ecdh_side side ) { int ret; + ECDH_VALIDATE_RET( ctx != NULL ); + ECDH_VALIDATE_RET( key != NULL ); + ECDH_VALIDATE_RET( side == MBEDTLS_ECDH_OURS || + side == MBEDTLS_ECDH_THEIRS ); - if( ctx == NULL || ctx->grp.pbits == 0 ) + if( ( ret = mbedtls_ecdh_setup( ctx, key->grp.id ) ) != 0 ) + return( ret ); + +#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT) + return( ecdh_get_params_internal( ctx, key, side ) ); +#else + switch( ctx->var ) + { + case MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0: + return( ecdh_get_params_internal( &ctx->ctx.mbed_ecdh, + key, side ) ); + default: + return MBEDTLS_ERR_ECP_BAD_INPUT_DATA; + } +#endif +} + +static int ecdh_make_public_internal( mbedtls_ecdh_context_mbed *ctx, + size_t *olen, int point_format, + unsigned char *buf, size_t blen, + int (*f_rng)(void *, + unsigned char *, + size_t), + void *p_rng, + int restart_enabled ) +{ + int ret; +#if defined(MBEDTLS_ECP_RESTARTABLE) + mbedtls_ecp_restart_ctx *rs_ctx = NULL; +#endif + + if( ctx->grp.pbits == 0 ) return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA ); - if( ( ret = mbedtls_ecdh_gen_public( &ctx->grp, &ctx->d, &ctx->Q, f_rng, p_rng ) ) - != 0 ) +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( restart_enabled ) + rs_ctx = &ctx->rs; +#else + (void) restart_enabled; +#endif + +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( ( ret = ecdh_gen_public_restartable( &ctx->grp, &ctx->d, &ctx->Q, + f_rng, p_rng, rs_ctx ) ) != 0 ) + return( ret ); +#else + if( ( ret = mbedtls_ecdh_gen_public( &ctx->grp, &ctx->d, &ctx->Q, + f_rng, p_rng ) ) != 0 ) return( ret ); +#endif /* MBEDTLS_ECP_RESTARTABLE */ - return mbedtls_ecp_tls_write_point( &ctx->grp, &ctx->Q, ctx->point_format, - olen, buf, blen ); + return mbedtls_ecp_tls_write_point( &ctx->grp, &ctx->Q, point_format, olen, + buf, blen ); } /* - * Parse and import the client's public value + * Setup and export the client public value */ -int mbedtls_ecdh_read_public( mbedtls_ecdh_context *ctx, - const unsigned char *buf, size_t blen ) +int mbedtls_ecdh_make_public( mbedtls_ecdh_context *ctx, size_t *olen, + unsigned char *buf, size_t blen, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng ) +{ + int restart_enabled = 0; + ECDH_VALIDATE_RET( ctx != NULL ); + ECDH_VALIDATE_RET( olen != NULL ); + ECDH_VALIDATE_RET( buf != NULL ); + ECDH_VALIDATE_RET( f_rng != NULL ); + +#if defined(MBEDTLS_ECP_RESTARTABLE) + restart_enabled = ctx->restart_enabled; +#endif + +#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT) + return( ecdh_make_public_internal( ctx, olen, ctx->point_format, buf, blen, + f_rng, p_rng, restart_enabled ) ); +#else + switch( ctx->var ) + { + case MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0: + return( ecdh_make_public_internal( &ctx->ctx.mbed_ecdh, olen, + ctx->point_format, buf, blen, + f_rng, p_rng, + restart_enabled ) ); + default: + return MBEDTLS_ERR_ECP_BAD_INPUT_DATA; + } +#endif +} + +static int ecdh_read_public_internal( mbedtls_ecdh_context_mbed *ctx, + const unsigned char *buf, size_t blen ) { int ret; const unsigned char *p = buf; - if( ctx == NULL ) - return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA ); - - if( ( ret = mbedtls_ecp_tls_read_point( &ctx->grp, &ctx->Qp, &p, blen ) ) != 0 ) + if( ( ret = mbedtls_ecp_tls_read_point( &ctx->grp, &ctx->Qp, &p, + blen ) ) != 0 ) return( ret ); if( (size_t)( p - buf ) != blen ) @@ -240,23 +549,66 @@ int mbedtls_ecdh_read_public( mbedtls_ecdh_context *ctx, } /* - * Derive and export the shared secret + * Parse and import the client's public value */ -int mbedtls_ecdh_calc_secret( mbedtls_ecdh_context *ctx, size_t *olen, - unsigned char *buf, size_t blen, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) +int mbedtls_ecdh_read_public( mbedtls_ecdh_context *ctx, + const unsigned char *buf, size_t blen ) +{ + ECDH_VALIDATE_RET( ctx != NULL ); + ECDH_VALIDATE_RET( buf != NULL ); + +#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT) + return( ecdh_read_public_internal( ctx, buf, blen ) ); +#else + switch( ctx->var ) + { + case MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0: + return( ecdh_read_public_internal( &ctx->ctx.mbed_ecdh, + buf, blen ) ); + default: + return MBEDTLS_ERR_ECP_BAD_INPUT_DATA; + } +#endif +} + +static int ecdh_calc_secret_internal( mbedtls_ecdh_context_mbed *ctx, + size_t *olen, unsigned char *buf, + size_t blen, + int (*f_rng)(void *, + unsigned char *, + size_t), + void *p_rng, + int restart_enabled ) { int ret; +#if defined(MBEDTLS_ECP_RESTARTABLE) + mbedtls_ecp_restart_ctx *rs_ctx = NULL; +#endif - if( ctx == NULL ) + if( ctx == NULL || ctx->grp.pbits == 0 ) return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA ); - if( ( ret = mbedtls_ecdh_compute_shared( &ctx->grp, &ctx->z, &ctx->Qp, &ctx->d, - f_rng, p_rng ) ) != 0 ) +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( restart_enabled ) + rs_ctx = &ctx->rs; +#else + (void) restart_enabled; +#endif + +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( ( ret = ecdh_compute_shared_restartable( &ctx->grp, &ctx->z, &ctx->Qp, + &ctx->d, f_rng, p_rng, + rs_ctx ) ) != 0 ) { return( ret ); } +#else + if( ( ret = mbedtls_ecdh_compute_shared( &ctx->grp, &ctx->z, &ctx->Qp, + &ctx->d, f_rng, p_rng ) ) != 0 ) + { + return( ret ); + } +#endif /* MBEDTLS_ECP_RESTARTABLE */ if( mbedtls_mpi_size( &ctx->z ) > blen ) return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA ); @@ -265,4 +617,37 @@ int mbedtls_ecdh_calc_secret( mbedtls_ecdh_context *ctx, size_t *olen, return mbedtls_mpi_write_binary( &ctx->z, buf, *olen ); } +/* + * Derive and export the shared secret + */ +int mbedtls_ecdh_calc_secret( mbedtls_ecdh_context *ctx, size_t *olen, + unsigned char *buf, size_t blen, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng ) +{ + int restart_enabled = 0; + ECDH_VALIDATE_RET( ctx != NULL ); + ECDH_VALIDATE_RET( olen != NULL ); + ECDH_VALIDATE_RET( buf != NULL ); + +#if defined(MBEDTLS_ECP_RESTARTABLE) + restart_enabled = ctx->restart_enabled; +#endif + +#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT) + return( ecdh_calc_secret_internal( ctx, olen, buf, blen, f_rng, p_rng, + restart_enabled ) ); +#else + switch( ctx->var ) + { + case MBEDTLS_ECDH_VARIANT_MBEDTLS_2_0: + return( ecdh_calc_secret_internal( &ctx->ctx.mbed_ecdh, olen, buf, + blen, f_rng, p_rng, + restart_enabled ) ); + default: + return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA ); + } +#endif +} + #endif /* MBEDTLS_ECDH_C */ diff --git a/thirdparty/mbedtls/library/ecdsa.c b/thirdparty/mbedtls/library/ecdsa.c index 17a88bdd29..1204ef9949 100644 --- a/thirdparty/mbedtls/library/ecdsa.c +++ b/thirdparty/mbedtls/library/ecdsa.c @@ -42,6 +42,186 @@ #include "mbedtls/hmac_drbg.h" #endif +#if defined(MBEDTLS_PLATFORM_C) +#include "mbedtls/platform.h" +#else +#include <stdlib.h> +#define mbedtls_calloc calloc +#define mbedtls_free free +#endif + +#include "mbedtls/platform_util.h" + +/* Parameter validation macros based on platform_util.h */ +#define ECDSA_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_ECP_BAD_INPUT_DATA ) +#define ECDSA_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + +#if defined(MBEDTLS_ECP_RESTARTABLE) + +/* + * Sub-context for ecdsa_verify() + */ +struct mbedtls_ecdsa_restart_ver +{ + mbedtls_mpi u1, u2; /* intermediate values */ + enum { /* what to do next? */ + ecdsa_ver_init = 0, /* getting started */ + ecdsa_ver_muladd, /* muladd step */ + } state; +}; + +/* + * Init verify restart sub-context + */ +static void ecdsa_restart_ver_init( mbedtls_ecdsa_restart_ver_ctx *ctx ) +{ + mbedtls_mpi_init( &ctx->u1 ); + mbedtls_mpi_init( &ctx->u2 ); + ctx->state = ecdsa_ver_init; +} + +/* + * Free the components of a verify restart sub-context + */ +static void ecdsa_restart_ver_free( mbedtls_ecdsa_restart_ver_ctx *ctx ) +{ + if( ctx == NULL ) + return; + + mbedtls_mpi_free( &ctx->u1 ); + mbedtls_mpi_free( &ctx->u2 ); + + ecdsa_restart_ver_init( ctx ); +} + +/* + * Sub-context for ecdsa_sign() + */ +struct mbedtls_ecdsa_restart_sig +{ + int sign_tries; + int key_tries; + mbedtls_mpi k; /* per-signature random */ + mbedtls_mpi r; /* r value */ + enum { /* what to do next? */ + ecdsa_sig_init = 0, /* getting started */ + ecdsa_sig_mul, /* doing ecp_mul() */ + ecdsa_sig_modn, /* mod N computations */ + } state; +}; + +/* + * Init verify sign sub-context + */ +static void ecdsa_restart_sig_init( mbedtls_ecdsa_restart_sig_ctx *ctx ) +{ + ctx->sign_tries = 0; + ctx->key_tries = 0; + mbedtls_mpi_init( &ctx->k ); + mbedtls_mpi_init( &ctx->r ); + ctx->state = ecdsa_sig_init; +} + +/* + * Free the components of a sign restart sub-context + */ +static void ecdsa_restart_sig_free( mbedtls_ecdsa_restart_sig_ctx *ctx ) +{ + if( ctx == NULL ) + return; + + mbedtls_mpi_free( &ctx->k ); + mbedtls_mpi_free( &ctx->r ); +} + +#if defined(MBEDTLS_ECDSA_DETERMINISTIC) +/* + * Sub-context for ecdsa_sign_det() + */ +struct mbedtls_ecdsa_restart_det +{ + mbedtls_hmac_drbg_context rng_ctx; /* DRBG state */ + enum { /* what to do next? */ + ecdsa_det_init = 0, /* getting started */ + ecdsa_det_sign, /* make signature */ + } state; +}; + +/* + * Init verify sign_det sub-context + */ +static void ecdsa_restart_det_init( mbedtls_ecdsa_restart_det_ctx *ctx ) +{ + mbedtls_hmac_drbg_init( &ctx->rng_ctx ); + ctx->state = ecdsa_det_init; +} + +/* + * Free the components of a sign_det restart sub-context + */ +static void ecdsa_restart_det_free( mbedtls_ecdsa_restart_det_ctx *ctx ) +{ + if( ctx == NULL ) + return; + + mbedtls_hmac_drbg_free( &ctx->rng_ctx ); + + ecdsa_restart_det_init( ctx ); +} +#endif /* MBEDTLS_ECDSA_DETERMINISTIC */ + +#define ECDSA_RS_ECP &rs_ctx->ecp + +/* Utility macro for checking and updating ops budget */ +#define ECDSA_BUDGET( ops ) \ + MBEDTLS_MPI_CHK( mbedtls_ecp_check_budget( grp, &rs_ctx->ecp, ops ) ); + +/* Call this when entering a function that needs its own sub-context */ +#define ECDSA_RS_ENTER( SUB ) do { \ + /* reset ops count for this call if top-level */ \ + if( rs_ctx != NULL && rs_ctx->ecp.depth++ == 0 ) \ + rs_ctx->ecp.ops_done = 0; \ + \ + /* set up our own sub-context if needed */ \ + if( mbedtls_ecp_restart_is_enabled() && \ + rs_ctx != NULL && rs_ctx->SUB == NULL ) \ + { \ + rs_ctx->SUB = mbedtls_calloc( 1, sizeof( *rs_ctx->SUB ) ); \ + if( rs_ctx->SUB == NULL ) \ + return( MBEDTLS_ERR_ECP_ALLOC_FAILED ); \ + \ + ecdsa_restart_## SUB ##_init( rs_ctx->SUB ); \ + } \ +} while( 0 ) + +/* Call this when leaving a function that needs its own sub-context */ +#define ECDSA_RS_LEAVE( SUB ) do { \ + /* clear our sub-context when not in progress (done or error) */ \ + if( rs_ctx != NULL && rs_ctx->SUB != NULL && \ + ret != MBEDTLS_ERR_ECP_IN_PROGRESS ) \ + { \ + ecdsa_restart_## SUB ##_free( rs_ctx->SUB ); \ + mbedtls_free( rs_ctx->SUB ); \ + rs_ctx->SUB = NULL; \ + } \ + \ + if( rs_ctx != NULL ) \ + rs_ctx->ecp.depth--; \ +} while( 0 ) + +#else /* MBEDTLS_ECP_RESTARTABLE */ + +#define ECDSA_RS_ECP NULL + +#define ECDSA_BUDGET( ops ) /* no-op; for compatibility */ + +#define ECDSA_RS_ENTER( SUB ) (void) rs_ctx +#define ECDSA_RS_LEAVE( SUB ) (void) rs_ctx + +#endif /* MBEDTLS_ECP_RESTARTABLE */ + /* * Derive a suitable integer for group grp from a buffer of length len * SEC1 4.1.3 step 5 aka SEC1 4.1.4 step 3 @@ -70,13 +250,17 @@ cleanup: * Compute ECDSA signature of a hashed message (SEC1 4.1.3) * Obviously, compared to SEC1 4.1.3, we skip step 4 (hash message) */ -int mbedtls_ecdsa_sign( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s, +static int ecdsa_sign_restartable( mbedtls_ecp_group *grp, + mbedtls_mpi *r, mbedtls_mpi *s, const mbedtls_mpi *d, const unsigned char *buf, size_t blen, - int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) + int (*f_rng)(void *, unsigned char *, size_t), void *p_rng, + mbedtls_ecdsa_restart_ctx *rs_ctx ) { - int ret, key_tries, sign_tries, blind_tries; + int ret, key_tries, sign_tries; + int *p_sign_tries = &sign_tries, *p_key_tries = &key_tries; mbedtls_ecp_point R; mbedtls_mpi k, e, t; + mbedtls_mpi *pk = &k, *pr = r; /* Fail cleanly on curves such as Curve25519 that can't be used for ECDSA */ if( grp->N.p == NULL ) @@ -89,26 +273,72 @@ int mbedtls_ecdsa_sign( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s, mbedtls_ecp_point_init( &R ); mbedtls_mpi_init( &k ); mbedtls_mpi_init( &e ); mbedtls_mpi_init( &t ); - sign_tries = 0; + ECDSA_RS_ENTER( sig ); + +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->sig != NULL ) + { + /* redirect to our context */ + p_sign_tries = &rs_ctx->sig->sign_tries; + p_key_tries = &rs_ctx->sig->key_tries; + pk = &rs_ctx->sig->k; + pr = &rs_ctx->sig->r; + + /* jump to current step */ + if( rs_ctx->sig->state == ecdsa_sig_mul ) + goto mul; + if( rs_ctx->sig->state == ecdsa_sig_modn ) + goto modn; + } +#endif /* MBEDTLS_ECP_RESTARTABLE */ + + *p_sign_tries = 0; do { + if( *p_sign_tries++ > 10 ) + { + ret = MBEDTLS_ERR_ECP_RANDOM_FAILED; + goto cleanup; + } + /* * Steps 1-3: generate a suitable ephemeral keypair * and set r = xR mod n */ - key_tries = 0; + *p_key_tries = 0; do { - MBEDTLS_MPI_CHK( mbedtls_ecp_gen_keypair( grp, &k, &R, f_rng, p_rng ) ); - MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( r, &R.X, &grp->N ) ); - - if( key_tries++ > 10 ) + if( *p_key_tries++ > 10 ) { ret = MBEDTLS_ERR_ECP_RANDOM_FAILED; goto cleanup; } + + MBEDTLS_MPI_CHK( mbedtls_ecp_gen_privkey( grp, pk, f_rng, p_rng ) ); + +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->sig != NULL ) + rs_ctx->sig->state = ecdsa_sig_mul; + +mul: +#endif + MBEDTLS_MPI_CHK( mbedtls_ecp_mul_restartable( grp, &R, pk, &grp->G, + f_rng, p_rng, ECDSA_RS_ECP ) ); + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( pr, &R.X, &grp->N ) ); } - while( mbedtls_mpi_cmp_int( r, 0 ) == 0 ); + while( mbedtls_mpi_cmp_int( pr, 0 ) == 0 ); + +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->sig != NULL ) + rs_ctx->sig->state = ecdsa_sig_modn; + +modn: +#endif + /* + * Accounting for everything up to the end of the loop + * (step 6, but checking now avoids saving e and t) + */ + ECDSA_BUDGET( MBEDTLS_ECP_OPS_INV + 4 ); /* * Step 5: derive MPI from hashed message @@ -119,57 +349,67 @@ int mbedtls_ecdsa_sign( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s, * Generate a random value to blind inv_mod in next step, * avoiding a potential timing leak. */ - blind_tries = 0; - do - { - size_t n_size = ( grp->nbits + 7 ) / 8; - MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &t, n_size, f_rng, p_rng ) ); - MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &t, 8 * n_size - grp->nbits ) ); - - /* See mbedtls_ecp_gen_keypair() */ - if( ++blind_tries > 30 ) - return( MBEDTLS_ERR_ECP_RANDOM_FAILED ); - } - while( mbedtls_mpi_cmp_int( &t, 1 ) < 0 || - mbedtls_mpi_cmp_mpi( &t, &grp->N ) >= 0 ); + MBEDTLS_MPI_CHK( mbedtls_ecp_gen_privkey( grp, &t, f_rng, p_rng ) ); /* * Step 6: compute s = (e + r * d) / k = t (e + rd) / (kt) mod n */ - MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( s, r, d ) ); + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( s, pr, d ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_add_mpi( &e, &e, s ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &e, &e, &t ) ); - MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &k, &k, &t ) ); - MBEDTLS_MPI_CHK( mbedtls_mpi_inv_mod( s, &k, &grp->N ) ); + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( pk, pk, &t ) ); + MBEDTLS_MPI_CHK( mbedtls_mpi_inv_mod( s, pk, &grp->N ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( s, s, &e ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( s, s, &grp->N ) ); - - if( sign_tries++ > 10 ) - { - ret = MBEDTLS_ERR_ECP_RANDOM_FAILED; - goto cleanup; - } } while( mbedtls_mpi_cmp_int( s, 0 ) == 0 ); +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->sig != NULL ) + mbedtls_mpi_copy( r, pr ); +#endif + cleanup: mbedtls_ecp_point_free( &R ); mbedtls_mpi_free( &k ); mbedtls_mpi_free( &e ); mbedtls_mpi_free( &t ); + ECDSA_RS_LEAVE( sig ); + return( ret ); } -#endif /* MBEDTLS_ECDSA_SIGN_ALT */ + +/* + * Compute ECDSA signature of a hashed message + */ +int mbedtls_ecdsa_sign( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s, + const mbedtls_mpi *d, const unsigned char *buf, size_t blen, + int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) +{ + ECDSA_VALIDATE_RET( grp != NULL ); + ECDSA_VALIDATE_RET( r != NULL ); + ECDSA_VALIDATE_RET( s != NULL ); + ECDSA_VALIDATE_RET( d != NULL ); + ECDSA_VALIDATE_RET( f_rng != NULL ); + ECDSA_VALIDATE_RET( buf != NULL || blen == 0 ); + + return( ecdsa_sign_restartable( grp, r, s, d, buf, blen, + f_rng, p_rng, NULL ) ); +} +#endif /* !MBEDTLS_ECDSA_SIGN_ALT */ #if defined(MBEDTLS_ECDSA_DETERMINISTIC) /* * Deterministic signature wrapper */ -int mbedtls_ecdsa_sign_det( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s, +static int ecdsa_sign_det_restartable( mbedtls_ecp_group *grp, + mbedtls_mpi *r, mbedtls_mpi *s, const mbedtls_mpi *d, const unsigned char *buf, size_t blen, - mbedtls_md_type_t md_alg ) + mbedtls_md_type_t md_alg, + mbedtls_ecdsa_restart_ctx *rs_ctx ) { int ret; mbedtls_hmac_drbg_context rng_ctx; + mbedtls_hmac_drbg_context *p_rng = &rng_ctx; unsigned char data[2 * MBEDTLS_ECP_MAX_BYTES]; size_t grp_len = ( grp->nbits + 7 ) / 8; const mbedtls_md_info_t *md_info; @@ -181,21 +421,64 @@ int mbedtls_ecdsa_sign_det( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi mbedtls_mpi_init( &h ); mbedtls_hmac_drbg_init( &rng_ctx ); + ECDSA_RS_ENTER( det ); + +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->det != NULL ) + { + /* redirect to our context */ + p_rng = &rs_ctx->det->rng_ctx; + + /* jump to current step */ + if( rs_ctx->det->state == ecdsa_det_sign ) + goto sign; + } +#endif /* MBEDTLS_ECP_RESTARTABLE */ + /* Use private key and message hash (reduced) to initialize HMAC_DRBG */ MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( d, data, grp_len ) ); MBEDTLS_MPI_CHK( derive_mpi( grp, &h, buf, blen ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &h, data + grp_len, grp_len ) ); - mbedtls_hmac_drbg_seed_buf( &rng_ctx, md_info, data, 2 * grp_len ); + mbedtls_hmac_drbg_seed_buf( p_rng, md_info, data, 2 * grp_len ); + +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->det != NULL ) + rs_ctx->det->state = ecdsa_det_sign; +sign: +#endif +#if defined(MBEDTLS_ECDSA_SIGN_ALT) ret = mbedtls_ecdsa_sign( grp, r, s, d, buf, blen, - mbedtls_hmac_drbg_random, &rng_ctx ); + mbedtls_hmac_drbg_random, p_rng ); +#else + ret = ecdsa_sign_restartable( grp, r, s, d, buf, blen, + mbedtls_hmac_drbg_random, p_rng, rs_ctx ); +#endif /* MBEDTLS_ECDSA_SIGN_ALT */ cleanup: mbedtls_hmac_drbg_free( &rng_ctx ); mbedtls_mpi_free( &h ); + ECDSA_RS_LEAVE( det ); + return( ret ); } + +/* + * Deterministic signature wrapper + */ +int mbedtls_ecdsa_sign_det( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s, + const mbedtls_mpi *d, const unsigned char *buf, size_t blen, + mbedtls_md_type_t md_alg ) +{ + ECDSA_VALIDATE_RET( grp != NULL ); + ECDSA_VALIDATE_RET( r != NULL ); + ECDSA_VALIDATE_RET( s != NULL ); + ECDSA_VALIDATE_RET( d != NULL ); + ECDSA_VALIDATE_RET( buf != NULL || blen == 0 ); + + return( ecdsa_sign_det_restartable( grp, r, s, d, buf, blen, md_alg, NULL ) ); +} #endif /* MBEDTLS_ECDSA_DETERMINISTIC */ #if !defined(MBEDTLS_ECDSA_VERIFY_ALT) @@ -203,21 +486,40 @@ cleanup: * Verify ECDSA signature of hashed message (SEC1 4.1.4) * Obviously, compared to SEC1 4.1.3, we skip step 2 (hash message) */ -int mbedtls_ecdsa_verify( mbedtls_ecp_group *grp, - const unsigned char *buf, size_t blen, - const mbedtls_ecp_point *Q, const mbedtls_mpi *r, const mbedtls_mpi *s) +static int ecdsa_verify_restartable( mbedtls_ecp_group *grp, + const unsigned char *buf, size_t blen, + const mbedtls_ecp_point *Q, + const mbedtls_mpi *r, const mbedtls_mpi *s, + mbedtls_ecdsa_restart_ctx *rs_ctx ) { int ret; mbedtls_mpi e, s_inv, u1, u2; mbedtls_ecp_point R; + mbedtls_mpi *pu1 = &u1, *pu2 = &u2; mbedtls_ecp_point_init( &R ); - mbedtls_mpi_init( &e ); mbedtls_mpi_init( &s_inv ); mbedtls_mpi_init( &u1 ); mbedtls_mpi_init( &u2 ); + mbedtls_mpi_init( &e ); mbedtls_mpi_init( &s_inv ); + mbedtls_mpi_init( &u1 ); mbedtls_mpi_init( &u2 ); /* Fail cleanly on curves such as Curve25519 that can't be used for ECDSA */ if( grp->N.p == NULL ) return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA ); + ECDSA_RS_ENTER( ver ); + +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->ver != NULL ) + { + /* redirect to our context */ + pu1 = &rs_ctx->ver->u1; + pu2 = &rs_ctx->ver->u2; + + /* jump to current step */ + if( rs_ctx->ver->state == ecdsa_ver_muladd ) + goto muladd; + } +#endif /* MBEDTLS_ECP_RESTARTABLE */ + /* * Step 1: make sure r and s are in range 1..n-1 */ @@ -229,11 +531,6 @@ int mbedtls_ecdsa_verify( mbedtls_ecp_group *grp, } /* - * Additional precaution: make sure Q is valid - */ - MBEDTLS_MPI_CHK( mbedtls_ecp_check_pubkey( grp, Q ) ); - - /* * Step 3: derive MPI from hashed message */ MBEDTLS_MPI_CHK( derive_mpi( grp, &e, buf, blen ) ); @@ -241,21 +538,27 @@ int mbedtls_ecdsa_verify( mbedtls_ecp_group *grp, /* * Step 4: u1 = e / s mod n, u2 = r / s mod n */ + ECDSA_BUDGET( MBEDTLS_ECP_OPS_CHK + MBEDTLS_ECP_OPS_INV + 2 ); + MBEDTLS_MPI_CHK( mbedtls_mpi_inv_mod( &s_inv, s, &grp->N ) ); - MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &u1, &e, &s_inv ) ); - MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &u1, &u1, &grp->N ) ); + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( pu1, &e, &s_inv ) ); + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( pu1, pu1, &grp->N ) ); - MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &u2, r, &s_inv ) ); - MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( &u2, &u2, &grp->N ) ); + MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( pu2, r, &s_inv ) ); + MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi( pu2, pu2, &grp->N ) ); +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->ver != NULL ) + rs_ctx->ver->state = ecdsa_ver_muladd; + +muladd: +#endif /* * Step 5: R = u1 G + u2 Q - * - * Since we're not using any secret data, no need to pass a RNG to - * mbedtls_ecp_mul() for countermesures. */ - MBEDTLS_MPI_CHK( mbedtls_ecp_muladd( grp, &R, &u1, &grp->G, &u2, Q ) ); + MBEDTLS_MPI_CHK( mbedtls_ecp_muladd_restartable( grp, + &R, pu1, &grp->G, pu2, Q, ECDSA_RS_ECP ) ); if( mbedtls_ecp_is_zero( &R ) ) { @@ -280,11 +583,32 @@ int mbedtls_ecdsa_verify( mbedtls_ecp_group *grp, cleanup: mbedtls_ecp_point_free( &R ); - mbedtls_mpi_free( &e ); mbedtls_mpi_free( &s_inv ); mbedtls_mpi_free( &u1 ); mbedtls_mpi_free( &u2 ); + mbedtls_mpi_free( &e ); mbedtls_mpi_free( &s_inv ); + mbedtls_mpi_free( &u1 ); mbedtls_mpi_free( &u2 ); + + ECDSA_RS_LEAVE( ver ); return( ret ); } -#endif /* MBEDTLS_ECDSA_VERIFY_ALT */ + +/* + * Verify ECDSA signature of hashed message + */ +int mbedtls_ecdsa_verify( mbedtls_ecp_group *grp, + const unsigned char *buf, size_t blen, + const mbedtls_ecp_point *Q, + const mbedtls_mpi *r, + const mbedtls_mpi *s) +{ + ECDSA_VALIDATE_RET( grp != NULL ); + ECDSA_VALIDATE_RET( Q != NULL ); + ECDSA_VALIDATE_RET( r != NULL ); + ECDSA_VALIDATE_RET( s != NULL ); + ECDSA_VALIDATE_RET( buf != NULL || blen == 0 ); + + return( ecdsa_verify_restartable( grp, buf, blen, Q, r, s, NULL ) ); +} +#endif /* !MBEDTLS_ECDSA_VERIFY_ALT */ /* * Convert a signature (given by context) to ASN.1 @@ -313,14 +637,20 @@ static int ecdsa_signature_to_asn1( const mbedtls_mpi *r, const mbedtls_mpi *s, /* * Compute and write signature */ -int mbedtls_ecdsa_write_signature( mbedtls_ecdsa_context *ctx, mbedtls_md_type_t md_alg, +int mbedtls_ecdsa_write_signature_restartable( mbedtls_ecdsa_context *ctx, + mbedtls_md_type_t md_alg, const unsigned char *hash, size_t hlen, unsigned char *sig, size_t *slen, int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) + void *p_rng, + mbedtls_ecdsa_restart_ctx *rs_ctx ) { int ret; mbedtls_mpi r, s; + ECDSA_VALIDATE_RET( ctx != NULL ); + ECDSA_VALIDATE_RET( hash != NULL ); + ECDSA_VALIDATE_RET( sig != NULL ); + ECDSA_VALIDATE_RET( slen != NULL ); mbedtls_mpi_init( &r ); mbedtls_mpi_init( &s ); @@ -329,14 +659,19 @@ int mbedtls_ecdsa_write_signature( mbedtls_ecdsa_context *ctx, mbedtls_md_type_t (void) f_rng; (void) p_rng; - MBEDTLS_MPI_CHK( mbedtls_ecdsa_sign_det( &ctx->grp, &r, &s, &ctx->d, - hash, hlen, md_alg ) ); + MBEDTLS_MPI_CHK( ecdsa_sign_det_restartable( &ctx->grp, &r, &s, &ctx->d, + hash, hlen, md_alg, rs_ctx ) ); #else (void) md_alg; +#if defined(MBEDTLS_ECDSA_SIGN_ALT) MBEDTLS_MPI_CHK( mbedtls_ecdsa_sign( &ctx->grp, &r, &s, &ctx->d, hash, hlen, f_rng, p_rng ) ); -#endif +#else + MBEDTLS_MPI_CHK( ecdsa_sign_restartable( &ctx->grp, &r, &s, &ctx->d, + hash, hlen, f_rng, p_rng, rs_ctx ) ); +#endif /* MBEDTLS_ECDSA_SIGN_ALT */ +#endif /* MBEDTLS_ECDSA_DETERMINISTIC */ MBEDTLS_MPI_CHK( ecdsa_signature_to_asn1( &r, &s, sig, slen ) ); @@ -347,13 +682,35 @@ cleanup: return( ret ); } -#if ! defined(MBEDTLS_DEPRECATED_REMOVED) && \ +/* + * Compute and write signature + */ +int mbedtls_ecdsa_write_signature( mbedtls_ecdsa_context *ctx, + mbedtls_md_type_t md_alg, + const unsigned char *hash, size_t hlen, + unsigned char *sig, size_t *slen, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng ) +{ + ECDSA_VALIDATE_RET( ctx != NULL ); + ECDSA_VALIDATE_RET( hash != NULL ); + ECDSA_VALIDATE_RET( sig != NULL ); + ECDSA_VALIDATE_RET( slen != NULL ); + return( mbedtls_ecdsa_write_signature_restartable( + ctx, md_alg, hash, hlen, sig, slen, f_rng, p_rng, NULL ) ); +} + +#if !defined(MBEDTLS_DEPRECATED_REMOVED) && \ defined(MBEDTLS_ECDSA_DETERMINISTIC) int mbedtls_ecdsa_write_signature_det( mbedtls_ecdsa_context *ctx, const unsigned char *hash, size_t hlen, unsigned char *sig, size_t *slen, mbedtls_md_type_t md_alg ) { + ECDSA_VALIDATE_RET( ctx != NULL ); + ECDSA_VALIDATE_RET( hash != NULL ); + ECDSA_VALIDATE_RET( sig != NULL ); + ECDSA_VALIDATE_RET( slen != NULL ); return( mbedtls_ecdsa_write_signature( ctx, md_alg, hash, hlen, sig, slen, NULL, NULL ) ); } @@ -366,11 +723,29 @@ int mbedtls_ecdsa_read_signature( mbedtls_ecdsa_context *ctx, const unsigned char *hash, size_t hlen, const unsigned char *sig, size_t slen ) { + ECDSA_VALIDATE_RET( ctx != NULL ); + ECDSA_VALIDATE_RET( hash != NULL ); + ECDSA_VALIDATE_RET( sig != NULL ); + return( mbedtls_ecdsa_read_signature_restartable( + ctx, hash, hlen, sig, slen, NULL ) ); +} + +/* + * Restartable read and check signature + */ +int mbedtls_ecdsa_read_signature_restartable( mbedtls_ecdsa_context *ctx, + const unsigned char *hash, size_t hlen, + const unsigned char *sig, size_t slen, + mbedtls_ecdsa_restart_ctx *rs_ctx ) +{ int ret; unsigned char *p = (unsigned char *) sig; const unsigned char *end = sig + slen; size_t len; mbedtls_mpi r, s; + ECDSA_VALIDATE_RET( ctx != NULL ); + ECDSA_VALIDATE_RET( hash != NULL ); + ECDSA_VALIDATE_RET( sig != NULL ); mbedtls_mpi_init( &r ); mbedtls_mpi_init( &s ); @@ -395,10 +770,15 @@ int mbedtls_ecdsa_read_signature( mbedtls_ecdsa_context *ctx, ret += MBEDTLS_ERR_ECP_BAD_INPUT_DATA; goto cleanup; } - +#if defined(MBEDTLS_ECDSA_VERIFY_ALT) if( ( ret = mbedtls_ecdsa_verify( &ctx->grp, hash, hlen, - &ctx->Q, &r, &s ) ) != 0 ) + &ctx->Q, &r, &s ) ) != 0 ) goto cleanup; +#else + if( ( ret = ecdsa_verify_restartable( &ctx->grp, hash, hlen, + &ctx->Q, &r, &s, rs_ctx ) ) != 0 ) + goto cleanup; +#endif /* MBEDTLS_ECDSA_VERIFY_ALT */ /* At this point we know that the buffer starts with a valid signature. * Return 0 if the buffer just contains the signature, and a specific @@ -420,10 +800,13 @@ cleanup: int mbedtls_ecdsa_genkey( mbedtls_ecdsa_context *ctx, mbedtls_ecp_group_id gid, int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) { + ECDSA_VALIDATE_RET( ctx != NULL ); + ECDSA_VALIDATE_RET( f_rng != NULL ); + return( mbedtls_ecp_group_load( &ctx->grp, gid ) || mbedtls_ecp_gen_keypair( &ctx->grp, &ctx->d, &ctx->Q, f_rng, p_rng ) ); } -#endif /* MBEDTLS_ECDSA_GENKEY_ALT */ +#endif /* !MBEDTLS_ECDSA_GENKEY_ALT */ /* * Set context from an mbedtls_ecp_keypair @@ -431,6 +814,8 @@ int mbedtls_ecdsa_genkey( mbedtls_ecdsa_context *ctx, mbedtls_ecp_group_id gid, int mbedtls_ecdsa_from_keypair( mbedtls_ecdsa_context *ctx, const mbedtls_ecp_keypair *key ) { int ret; + ECDSA_VALIDATE_RET( ctx != NULL ); + ECDSA_VALIDATE_RET( key != NULL ); if( ( ret = mbedtls_ecp_group_copy( &ctx->grp, &key->grp ) ) != 0 || ( ret = mbedtls_mpi_copy( &ctx->d, &key->d ) ) != 0 || @@ -447,6 +832,8 @@ int mbedtls_ecdsa_from_keypair( mbedtls_ecdsa_context *ctx, const mbedtls_ecp_ke */ void mbedtls_ecdsa_init( mbedtls_ecdsa_context *ctx ) { + ECDSA_VALIDATE( ctx != NULL ); + mbedtls_ecp_keypair_init( ctx ); } @@ -455,7 +842,53 @@ void mbedtls_ecdsa_init( mbedtls_ecdsa_context *ctx ) */ void mbedtls_ecdsa_free( mbedtls_ecdsa_context *ctx ) { + if( ctx == NULL ) + return; + mbedtls_ecp_keypair_free( ctx ); } +#if defined(MBEDTLS_ECP_RESTARTABLE) +/* + * Initialize a restart context + */ +void mbedtls_ecdsa_restart_init( mbedtls_ecdsa_restart_ctx *ctx ) +{ + ECDSA_VALIDATE( ctx != NULL ); + + mbedtls_ecp_restart_init( &ctx->ecp ); + + ctx->ver = NULL; + ctx->sig = NULL; +#if defined(MBEDTLS_ECDSA_DETERMINISTIC) + ctx->det = NULL; +#endif +} + +/* + * Free the components of a restart context + */ +void mbedtls_ecdsa_restart_free( mbedtls_ecdsa_restart_ctx *ctx ) +{ + if( ctx == NULL ) + return; + + mbedtls_ecp_restart_free( &ctx->ecp ); + + ecdsa_restart_ver_free( ctx->ver ); + mbedtls_free( ctx->ver ); + ctx->ver = NULL; + + ecdsa_restart_sig_free( ctx->sig ); + mbedtls_free( ctx->sig ); + ctx->sig = NULL; + +#if defined(MBEDTLS_ECDSA_DETERMINISTIC) + ecdsa_restart_det_free( ctx->det ); + mbedtls_free( ctx->det ); + ctx->det = NULL; +#endif +} +#endif /* MBEDTLS_ECP_RESTARTABLE */ + #endif /* MBEDTLS_ECDSA_C */ diff --git a/thirdparty/mbedtls/library/ecjpake.c b/thirdparty/mbedtls/library/ecjpake.c index ec5a4007db..be941b14b1 100644 --- a/thirdparty/mbedtls/library/ecjpake.c +++ b/thirdparty/mbedtls/library/ecjpake.c @@ -33,11 +33,18 @@ #if defined(MBEDTLS_ECJPAKE_C) #include "mbedtls/ecjpake.h" +#include "mbedtls/platform_util.h" #include <string.h> #if !defined(MBEDTLS_ECJPAKE_ALT) +/* Parameter validation macros based on platform_util.h */ +#define ECJPAKE_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_ECP_BAD_INPUT_DATA ) +#define ECJPAKE_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + /* * Convert a mbedtls_ecjpake_role to identifier string */ @@ -54,8 +61,7 @@ static const char * const ecjpake_id[] = { */ void mbedtls_ecjpake_init( mbedtls_ecjpake_context *ctx ) { - if( ctx == NULL ) - return; + ECJPAKE_VALIDATE( ctx != NULL ); ctx->md_info = NULL; mbedtls_ecp_group_init( &ctx->grp ); @@ -106,6 +112,11 @@ int mbedtls_ecjpake_setup( mbedtls_ecjpake_context *ctx, { int ret; + ECJPAKE_VALIDATE_RET( ctx != NULL ); + ECJPAKE_VALIDATE_RET( role == MBEDTLS_ECJPAKE_CLIENT || + role == MBEDTLS_ECJPAKE_SERVER ); + ECJPAKE_VALIDATE_RET( secret != NULL || len == 0 ); + ctx->role = role; if( ( ctx->md_info = mbedtls_md_info_from_type( hash ) ) == NULL ) @@ -127,6 +138,8 @@ cleanup: */ int mbedtls_ecjpake_check( const mbedtls_ecjpake_context *ctx ) { + ECJPAKE_VALIDATE_RET( ctx != NULL ); + if( ctx->md_info == NULL || ctx->grp.id == MBEDTLS_ECP_DP_NONE || ctx->s.p == NULL ) @@ -504,6 +517,9 @@ int mbedtls_ecjpake_read_round_one( mbedtls_ecjpake_context *ctx, const unsigned char *buf, size_t len ) { + ECJPAKE_VALIDATE_RET( ctx != NULL ); + ECJPAKE_VALIDATE_RET( buf != NULL ); + return( ecjpake_kkpp_read( ctx->md_info, &ctx->grp, ctx->point_format, &ctx->grp.G, &ctx->Xp1, &ctx->Xp2, ID_PEER, @@ -518,6 +534,11 @@ int mbedtls_ecjpake_write_round_one( mbedtls_ecjpake_context *ctx, int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) { + ECJPAKE_VALIDATE_RET( ctx != NULL ); + ECJPAKE_VALIDATE_RET( buf != NULL ); + ECJPAKE_VALIDATE_RET( olen != NULL ); + ECJPAKE_VALIDATE_RET( f_rng != NULL ); + return( ecjpake_kkpp_write( ctx->md_info, &ctx->grp, ctx->point_format, &ctx->grp.G, &ctx->xm1, &ctx->Xm1, &ctx->xm2, &ctx->Xm2, @@ -560,6 +581,9 @@ int mbedtls_ecjpake_read_round_two( mbedtls_ecjpake_context *ctx, mbedtls_ecp_group grp; mbedtls_ecp_point G; /* C: GB, S: GA */ + ECJPAKE_VALIDATE_RET( ctx != NULL ); + ECJPAKE_VALIDATE_RET( buf != NULL ); + mbedtls_ecp_group_init( &grp ); mbedtls_ecp_point_init( &G ); @@ -652,6 +676,11 @@ int mbedtls_ecjpake_write_round_two( mbedtls_ecjpake_context *ctx, const unsigned char *end = buf + len; size_t ec_len; + ECJPAKE_VALIDATE_RET( ctx != NULL ); + ECJPAKE_VALIDATE_RET( buf != NULL ); + ECJPAKE_VALIDATE_RET( olen != NULL ); + ECJPAKE_VALIDATE_RET( f_rng != NULL ); + mbedtls_ecp_point_init( &G ); mbedtls_ecp_point_init( &Xm ); mbedtls_mpi_init( &xm ); @@ -727,6 +756,11 @@ int mbedtls_ecjpake_derive_secret( mbedtls_ecjpake_context *ctx, unsigned char kx[MBEDTLS_ECP_MAX_BYTES]; size_t x_bytes; + ECJPAKE_VALIDATE_RET( ctx != NULL ); + ECJPAKE_VALIDATE_RET( buf != NULL ); + ECJPAKE_VALIDATE_RET( olen != NULL ); + ECJPAKE_VALIDATE_RET( f_rng != NULL ); + *olen = mbedtls_md_get_size( ctx->md_info ); if( len < *olen ) return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL ); diff --git a/thirdparty/mbedtls/library/ecp.c b/thirdparty/mbedtls/library/ecp.c index 41db3fbe5b..ecea5910e0 100644 --- a/thirdparty/mbedtls/library/ecp.c +++ b/thirdparty/mbedtls/library/ecp.c @@ -47,6 +47,35 @@ #include MBEDTLS_CONFIG_FILE #endif +/** + * \brief Function level alternative implementation. + * + * The MBEDTLS_ECP_INTERNAL_ALT macro enables alternative implementations to + * replace certain functions in this module. The alternative implementations are + * typically hardware accelerators and need to activate the hardware before the + * computation starts and deactivate it after it finishes. The + * mbedtls_internal_ecp_init() and mbedtls_internal_ecp_free() functions serve + * this purpose. + * + * To preserve the correct functionality the following conditions must hold: + * + * - The alternative implementation must be activated by + * mbedtls_internal_ecp_init() before any of the replaceable functions is + * called. + * - mbedtls_internal_ecp_free() must \b only be called when the alternative + * implementation is activated. + * - mbedtls_internal_ecp_init() must \b not be called when the alternative + * implementation is activated. + * - Public functions must not return while the alternative implementation is + * activated. + * - Replaceable functions are guarded by \c MBEDTLS_ECP_XXX_ALT macros and + * before calling them an \code if( mbedtls_internal_ecp_grp_capable( grp ) ) + * \endcode ensures that the alternative implementation supports the current + * group. + */ +#if defined(MBEDTLS_ECP_INTERNAL_ALT) +#endif + #if defined(MBEDTLS_ECP_C) #include "mbedtls/ecp.h" @@ -57,6 +86,12 @@ #if !defined(MBEDTLS_ECP_ALT) +/* Parameter validation macros based on platform_util.h */ +#define ECP_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_ECP_BAD_INPUT_DATA ) +#define ECP_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + #if defined(MBEDTLS_PLATFORM_C) #include "mbedtls/platform.h" #else @@ -82,6 +117,233 @@ static unsigned long add_count, dbl_count, mul_count; #endif +#if defined(MBEDTLS_ECP_RESTARTABLE) +/* + * Maximum number of "basic operations" to be done in a row. + * + * Default value 0 means that ECC operations will not yield. + * Note that regardless of the value of ecp_max_ops, always at + * least one step is performed before yielding. + * + * Setting ecp_max_ops=1 can be suitable for testing purposes + * as it will interrupt computation at all possible points. + */ +static unsigned ecp_max_ops = 0; + +/* + * Set ecp_max_ops + */ +void mbedtls_ecp_set_max_ops( unsigned max_ops ) +{ + ecp_max_ops = max_ops; +} + +/* + * Check if restart is enabled + */ +int mbedtls_ecp_restart_is_enabled( void ) +{ + return( ecp_max_ops != 0 ); +} + +/* + * Restart sub-context for ecp_mul_comb() + */ +struct mbedtls_ecp_restart_mul +{ + mbedtls_ecp_point R; /* current intermediate result */ + size_t i; /* current index in various loops, 0 outside */ + mbedtls_ecp_point *T; /* table for precomputed points */ + unsigned char T_size; /* number of points in table T */ + enum { /* what were we doing last time we returned? */ + ecp_rsm_init = 0, /* nothing so far, dummy initial state */ + ecp_rsm_pre_dbl, /* precompute 2^n multiples */ + ecp_rsm_pre_norm_dbl, /* normalize precomputed 2^n multiples */ + ecp_rsm_pre_add, /* precompute remaining points by adding */ + ecp_rsm_pre_norm_add, /* normalize all precomputed points */ + ecp_rsm_comb_core, /* ecp_mul_comb_core() */ + ecp_rsm_final_norm, /* do the final normalization */ + } state; +}; + +/* + * Init restart_mul sub-context + */ +static void ecp_restart_rsm_init( mbedtls_ecp_restart_mul_ctx *ctx ) +{ + mbedtls_ecp_point_init( &ctx->R ); + ctx->i = 0; + ctx->T = NULL; + ctx->T_size = 0; + ctx->state = ecp_rsm_init; +} + +/* + * Free the components of a restart_mul sub-context + */ +static void ecp_restart_rsm_free( mbedtls_ecp_restart_mul_ctx *ctx ) +{ + unsigned char i; + + if( ctx == NULL ) + return; + + mbedtls_ecp_point_free( &ctx->R ); + + if( ctx->T != NULL ) + { + for( i = 0; i < ctx->T_size; i++ ) + mbedtls_ecp_point_free( ctx->T + i ); + mbedtls_free( ctx->T ); + } + + ecp_restart_rsm_init( ctx ); +} + +/* + * Restart context for ecp_muladd() + */ +struct mbedtls_ecp_restart_muladd +{ + mbedtls_ecp_point mP; /* mP value */ + mbedtls_ecp_point R; /* R intermediate result */ + enum { /* what should we do next? */ + ecp_rsma_mul1 = 0, /* first multiplication */ + ecp_rsma_mul2, /* second multiplication */ + ecp_rsma_add, /* addition */ + ecp_rsma_norm, /* normalization */ + } state; +}; + +/* + * Init restart_muladd sub-context + */ +static void ecp_restart_ma_init( mbedtls_ecp_restart_muladd_ctx *ctx ) +{ + mbedtls_ecp_point_init( &ctx->mP ); + mbedtls_ecp_point_init( &ctx->R ); + ctx->state = ecp_rsma_mul1; +} + +/* + * Free the components of a restart_muladd sub-context + */ +static void ecp_restart_ma_free( mbedtls_ecp_restart_muladd_ctx *ctx ) +{ + if( ctx == NULL ) + return; + + mbedtls_ecp_point_free( &ctx->mP ); + mbedtls_ecp_point_free( &ctx->R ); + + ecp_restart_ma_init( ctx ); +} + +/* + * Initialize a restart context + */ +void mbedtls_ecp_restart_init( mbedtls_ecp_restart_ctx *ctx ) +{ + ECP_VALIDATE( ctx != NULL ); + ctx->ops_done = 0; + ctx->depth = 0; + ctx->rsm = NULL; + ctx->ma = NULL; +} + +/* + * Free the components of a restart context + */ +void mbedtls_ecp_restart_free( mbedtls_ecp_restart_ctx *ctx ) +{ + if( ctx == NULL ) + return; + + ecp_restart_rsm_free( ctx->rsm ); + mbedtls_free( ctx->rsm ); + + ecp_restart_ma_free( ctx->ma ); + mbedtls_free( ctx->ma ); + + mbedtls_ecp_restart_init( ctx ); +} + +/* + * Check if we can do the next step + */ +int mbedtls_ecp_check_budget( const mbedtls_ecp_group *grp, + mbedtls_ecp_restart_ctx *rs_ctx, + unsigned ops ) +{ + ECP_VALIDATE_RET( grp != NULL ); + + if( rs_ctx != NULL && ecp_max_ops != 0 ) + { + /* scale depending on curve size: the chosen reference is 256-bit, + * and multiplication is quadratic. Round to the closest integer. */ + if( grp->pbits >= 512 ) + ops *= 4; + else if( grp->pbits >= 384 ) + ops *= 2; + + /* Avoid infinite loops: always allow first step. + * Because of that, however, it's not generally true + * that ops_done <= ecp_max_ops, so the check + * ops_done > ecp_max_ops below is mandatory. */ + if( ( rs_ctx->ops_done != 0 ) && + ( rs_ctx->ops_done > ecp_max_ops || + ops > ecp_max_ops - rs_ctx->ops_done ) ) + { + return( MBEDTLS_ERR_ECP_IN_PROGRESS ); + } + + /* update running count */ + rs_ctx->ops_done += ops; + } + + return( 0 ); +} + +/* Call this when entering a function that needs its own sub-context */ +#define ECP_RS_ENTER( SUB ) do { \ + /* reset ops count for this call if top-level */ \ + if( rs_ctx != NULL && rs_ctx->depth++ == 0 ) \ + rs_ctx->ops_done = 0; \ + \ + /* set up our own sub-context if needed */ \ + if( mbedtls_ecp_restart_is_enabled() && \ + rs_ctx != NULL && rs_ctx->SUB == NULL ) \ + { \ + rs_ctx->SUB = mbedtls_calloc( 1, sizeof( *rs_ctx->SUB ) ); \ + if( rs_ctx->SUB == NULL ) \ + return( MBEDTLS_ERR_ECP_ALLOC_FAILED ); \ + \ + ecp_restart_## SUB ##_init( rs_ctx->SUB ); \ + } \ +} while( 0 ) + +/* Call this when leaving a function that needs its own sub-context */ +#define ECP_RS_LEAVE( SUB ) do { \ + /* clear our sub-context when not in progress (done or error) */ \ + if( rs_ctx != NULL && rs_ctx->SUB != NULL && \ + ret != MBEDTLS_ERR_ECP_IN_PROGRESS ) \ + { \ + ecp_restart_## SUB ##_free( rs_ctx->SUB ); \ + mbedtls_free( rs_ctx->SUB ); \ + rs_ctx->SUB = NULL; \ + } \ + \ + if( rs_ctx != NULL ) \ + rs_ctx->depth--; \ +} while( 0 ) + +#else /* MBEDTLS_ECP_RESTARTABLE */ + +#define ECP_RS_ENTER( sub ) (void) rs_ctx; +#define ECP_RS_LEAVE( sub ) (void) rs_ctx; + +#endif /* MBEDTLS_ECP_RESTARTABLE */ + #if defined(MBEDTLS_ECP_DP_SECP192R1_ENABLED) || \ defined(MBEDTLS_ECP_DP_SECP224R1_ENABLED) || \ defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED) || \ @@ -243,6 +505,9 @@ const mbedtls_ecp_curve_info *mbedtls_ecp_curve_info_from_name( const char *name { const mbedtls_ecp_curve_info *curve_info; + if( name == NULL ) + return( NULL ); + for( curve_info = mbedtls_ecp_curve_list(); curve_info->grp_id != MBEDTLS_ECP_DP_NONE; curve_info++ ) @@ -273,8 +538,7 @@ static inline ecp_curve_type ecp_get_type( const mbedtls_ecp_group *grp ) */ void mbedtls_ecp_point_init( mbedtls_ecp_point *pt ) { - if( pt == NULL ) - return; + ECP_VALIDATE( pt != NULL ); mbedtls_mpi_init( &pt->X ); mbedtls_mpi_init( &pt->Y ); @@ -286,10 +550,23 @@ void mbedtls_ecp_point_init( mbedtls_ecp_point *pt ) */ void mbedtls_ecp_group_init( mbedtls_ecp_group *grp ) { - if( grp == NULL ) - return; - - memset( grp, 0, sizeof( mbedtls_ecp_group ) ); + ECP_VALIDATE( grp != NULL ); + + grp->id = MBEDTLS_ECP_DP_NONE; + mbedtls_mpi_init( &grp->P ); + mbedtls_mpi_init( &grp->A ); + mbedtls_mpi_init( &grp->B ); + mbedtls_ecp_point_init( &grp->G ); + mbedtls_mpi_init( &grp->N ); + grp->pbits = 0; + grp->nbits = 0; + grp->h = 0; + grp->modp = NULL; + grp->t_pre = NULL; + grp->t_post = NULL; + grp->t_data = NULL; + grp->T = NULL; + grp->T_size = 0; } /* @@ -297,8 +574,7 @@ void mbedtls_ecp_group_init( mbedtls_ecp_group *grp ) */ void mbedtls_ecp_keypair_init( mbedtls_ecp_keypair *key ) { - if( key == NULL ) - return; + ECP_VALIDATE( key != NULL ); mbedtls_ecp_group_init( &key->grp ); mbedtls_mpi_init( &key->d ); @@ -366,6 +642,8 @@ void mbedtls_ecp_keypair_free( mbedtls_ecp_keypair *key ) int mbedtls_ecp_copy( mbedtls_ecp_point *P, const mbedtls_ecp_point *Q ) { int ret; + ECP_VALIDATE_RET( P != NULL ); + ECP_VALIDATE_RET( Q != NULL ); MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &P->X, &Q->X ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &P->Y, &Q->Y ) ); @@ -380,7 +658,10 @@ cleanup: */ int mbedtls_ecp_group_copy( mbedtls_ecp_group *dst, const mbedtls_ecp_group *src ) { - return mbedtls_ecp_group_load( dst, src->id ); + ECP_VALIDATE_RET( dst != NULL ); + ECP_VALIDATE_RET( src != NULL ); + + return( mbedtls_ecp_group_load( dst, src->id ) ); } /* @@ -389,6 +670,7 @@ int mbedtls_ecp_group_copy( mbedtls_ecp_group *dst, const mbedtls_ecp_group *src int mbedtls_ecp_set_zero( mbedtls_ecp_point *pt ) { int ret; + ECP_VALIDATE_RET( pt != NULL ); MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &pt->X , 1 ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &pt->Y , 1 ) ); @@ -403,15 +685,20 @@ cleanup: */ int mbedtls_ecp_is_zero( mbedtls_ecp_point *pt ) { + ECP_VALIDATE_RET( pt != NULL ); + return( mbedtls_mpi_cmp_int( &pt->Z, 0 ) == 0 ); } /* - * Compare two points lazyly + * Compare two points lazily */ int mbedtls_ecp_point_cmp( const mbedtls_ecp_point *P, const mbedtls_ecp_point *Q ) { + ECP_VALIDATE_RET( P != NULL ); + ECP_VALIDATE_RET( Q != NULL ); + if( mbedtls_mpi_cmp_mpi( &P->X, &Q->X ) == 0 && mbedtls_mpi_cmp_mpi( &P->Y, &Q->Y ) == 0 && mbedtls_mpi_cmp_mpi( &P->Z, &Q->Z ) == 0 ) @@ -429,6 +716,9 @@ int mbedtls_ecp_point_read_string( mbedtls_ecp_point *P, int radix, const char *x, const char *y ) { int ret; + ECP_VALIDATE_RET( P != NULL ); + ECP_VALIDATE_RET( x != NULL ); + ECP_VALIDATE_RET( y != NULL ); MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &P->X, radix, x ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &P->Y, radix, y ) ); @@ -441,16 +731,19 @@ cleanup: /* * Export a point into unsigned binary data (SEC1 2.3.3) */ -int mbedtls_ecp_point_write_binary( const mbedtls_ecp_group *grp, const mbedtls_ecp_point *P, - int format, size_t *olen, - unsigned char *buf, size_t buflen ) +int mbedtls_ecp_point_write_binary( const mbedtls_ecp_group *grp, + const mbedtls_ecp_point *P, + int format, size_t *olen, + unsigned char *buf, size_t buflen ) { int ret = 0; size_t plen; - - if( format != MBEDTLS_ECP_PF_UNCOMPRESSED && - format != MBEDTLS_ECP_PF_COMPRESSED ) - return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA ); + ECP_VALIDATE_RET( grp != NULL ); + ECP_VALIDATE_RET( P != NULL ); + ECP_VALIDATE_RET( olen != NULL ); + ECP_VALIDATE_RET( buf != NULL ); + ECP_VALIDATE_RET( format == MBEDTLS_ECP_PF_UNCOMPRESSED || + format == MBEDTLS_ECP_PF_COMPRESSED ); /* * Common case: P == 0 @@ -497,11 +790,15 @@ cleanup: /* * Import a point from unsigned binary data (SEC1 2.3.4) */ -int mbedtls_ecp_point_read_binary( const mbedtls_ecp_group *grp, mbedtls_ecp_point *pt, - const unsigned char *buf, size_t ilen ) +int mbedtls_ecp_point_read_binary( const mbedtls_ecp_group *grp, + mbedtls_ecp_point *pt, + const unsigned char *buf, size_t ilen ) { int ret; size_t plen; + ECP_VALIDATE_RET( grp != NULL ); + ECP_VALIDATE_RET( pt != NULL ); + ECP_VALIDATE_RET( buf != NULL ); if( ilen < 1 ) return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA ); @@ -536,11 +833,16 @@ cleanup: * opaque point <1..2^8-1>; * } ECPoint; */ -int mbedtls_ecp_tls_read_point( const mbedtls_ecp_group *grp, mbedtls_ecp_point *pt, - const unsigned char **buf, size_t buf_len ) +int mbedtls_ecp_tls_read_point( const mbedtls_ecp_group *grp, + mbedtls_ecp_point *pt, + const unsigned char **buf, size_t buf_len ) { unsigned char data_len; const unsigned char *buf_start; + ECP_VALIDATE_RET( grp != NULL ); + ECP_VALIDATE_RET( pt != NULL ); + ECP_VALIDATE_RET( buf != NULL ); + ECP_VALIDATE_RET( *buf != NULL ); /* * We must have at least two bytes (1 for length, at least one for data) @@ -558,7 +860,7 @@ int mbedtls_ecp_tls_read_point( const mbedtls_ecp_group *grp, mbedtls_ecp_point buf_start = *buf; *buf += data_len; - return mbedtls_ecp_point_read_binary( grp, pt, buf_start, data_len ); + return( mbedtls_ecp_point_read_binary( grp, pt, buf_start, data_len ) ); } /* @@ -572,6 +874,12 @@ int mbedtls_ecp_tls_write_point( const mbedtls_ecp_group *grp, const mbedtls_ecp unsigned char *buf, size_t blen ) { int ret; + ECP_VALIDATE_RET( grp != NULL ); + ECP_VALIDATE_RET( pt != NULL ); + ECP_VALIDATE_RET( olen != NULL ); + ECP_VALIDATE_RET( buf != NULL ); + ECP_VALIDATE_RET( format == MBEDTLS_ECP_PF_UNCOMPRESSED || + format == MBEDTLS_ECP_PF_COMPRESSED ); /* * buffer length must be at least one, for our length byte @@ -595,10 +903,33 @@ int mbedtls_ecp_tls_write_point( const mbedtls_ecp_group *grp, const mbedtls_ecp /* * Set a group from an ECParameters record (RFC 4492) */ -int mbedtls_ecp_tls_read_group( mbedtls_ecp_group *grp, const unsigned char **buf, size_t len ) +int mbedtls_ecp_tls_read_group( mbedtls_ecp_group *grp, + const unsigned char **buf, size_t len ) +{ + int ret; + mbedtls_ecp_group_id grp_id; + ECP_VALIDATE_RET( grp != NULL ); + ECP_VALIDATE_RET( buf != NULL ); + ECP_VALIDATE_RET( *buf != NULL ); + + if( ( ret = mbedtls_ecp_tls_read_group_id( &grp_id, buf, len ) ) != 0 ) + return( ret ); + + return( mbedtls_ecp_group_load( grp, grp_id ) ); +} + +/* + * Read a group id from an ECParameters record (RFC 4492) and convert it to + * mbedtls_ecp_group_id. + */ +int mbedtls_ecp_tls_read_group_id( mbedtls_ecp_group_id *grp, + const unsigned char **buf, size_t len ) { uint16_t tls_id; const mbedtls_ecp_curve_info *curve_info; + ECP_VALIDATE_RET( grp != NULL ); + ECP_VALIDATE_RET( buf != NULL ); + ECP_VALIDATE_RET( *buf != NULL ); /* * We expect at least three bytes (see below) @@ -622,7 +953,9 @@ int mbedtls_ecp_tls_read_group( mbedtls_ecp_group *grp, const unsigned char **bu if( ( curve_info = mbedtls_ecp_curve_info_from_tls_id( tls_id ) ) == NULL ) return( MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE ); - return mbedtls_ecp_group_load( grp, curve_info->grp_id ); + *grp = curve_info->grp_id; + + return( 0 ); } /* @@ -632,6 +965,9 @@ int mbedtls_ecp_tls_write_group( const mbedtls_ecp_group *grp, size_t *olen, unsigned char *buf, size_t blen ) { const mbedtls_ecp_curve_info *curve_info; + ECP_VALIDATE_RET( grp != NULL ); + ECP_VALIDATE_RET( buf != NULL ); + ECP_VALIDATE_RET( olen != NULL ); if( ( curve_info = mbedtls_ecp_curve_info_from_grp_id( grp->id ) ) == NULL ) return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA ); @@ -752,11 +1088,10 @@ static int ecp_normalize_jac( const mbedtls_ecp_group *grp, mbedtls_ecp_point *p return( 0 ); #if defined(MBEDTLS_ECP_NORMALIZE_JAC_ALT) - if ( mbedtls_internal_ecp_grp_capable( grp ) ) - { - return mbedtls_internal_ecp_normalize_jac( grp, pt ); - } + if( mbedtls_internal_ecp_grp_capable( grp ) ) + return( mbedtls_internal_ecp_normalize_jac( grp, pt ) ); #endif /* MBEDTLS_ECP_NORMALIZE_JAC_ALT */ + mbedtls_mpi_init( &Zi ); mbedtls_mpi_init( &ZZi ); /* @@ -796,32 +1131,33 @@ cleanup: * Cost: 1N(t) := 1I + (6t - 3)M + 1S */ static int ecp_normalize_jac_many( const mbedtls_ecp_group *grp, - mbedtls_ecp_point *T[], size_t t_len ) + mbedtls_ecp_point *T[], size_t T_size ) { int ret; size_t i; mbedtls_mpi *c, u, Zi, ZZi; - if( t_len < 2 ) + if( T_size < 2 ) return( ecp_normalize_jac( grp, *T ) ); #if defined(MBEDTLS_ECP_NORMALIZE_JAC_MANY_ALT) - if ( mbedtls_internal_ecp_grp_capable( grp ) ) - { - return mbedtls_internal_ecp_normalize_jac_many(grp, T, t_len); - } + if( mbedtls_internal_ecp_grp_capable( grp ) ) + return( mbedtls_internal_ecp_normalize_jac_many( grp, T, T_size ) ); #endif - if( ( c = mbedtls_calloc( t_len, sizeof( mbedtls_mpi ) ) ) == NULL ) + if( ( c = mbedtls_calloc( T_size, sizeof( mbedtls_mpi ) ) ) == NULL ) return( MBEDTLS_ERR_ECP_ALLOC_FAILED ); + for( i = 0; i < T_size; i++ ) + mbedtls_mpi_init( &c[i] ); + mbedtls_mpi_init( &u ); mbedtls_mpi_init( &Zi ); mbedtls_mpi_init( &ZZi ); /* * c[i] = Z_0 * ... * Z_i */ MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &c[0], &T[0]->Z ) ); - for( i = 1; i < t_len; i++ ) + for( i = 1; i < T_size; i++ ) { MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &c[i], &c[i-1], &T[i]->Z ) ); MOD_MUL( c[i] ); @@ -830,9 +1166,9 @@ static int ecp_normalize_jac_many( const mbedtls_ecp_group *grp, /* * u = 1 / (Z_0 * ... * Z_n) mod P */ - MBEDTLS_MPI_CHK( mbedtls_mpi_inv_mod( &u, &c[t_len-1], &grp->P ) ); + MBEDTLS_MPI_CHK( mbedtls_mpi_inv_mod( &u, &c[T_size-1], &grp->P ) ); - for( i = t_len - 1; ; i-- ) + for( i = T_size - 1; ; i-- ) { /* * Zi = 1 / Z_i mod p @@ -872,7 +1208,7 @@ static int ecp_normalize_jac_many( const mbedtls_ecp_group *grp, cleanup: mbedtls_mpi_free( &u ); mbedtls_mpi_free( &Zi ); mbedtls_mpi_free( &ZZi ); - for( i = 0; i < t_len; i++ ) + for( i = 0; i < T_size; i++ ) mbedtls_mpi_free( &c[i] ); mbedtls_free( c ); @@ -929,10 +1265,8 @@ static int ecp_double_jac( const mbedtls_ecp_group *grp, mbedtls_ecp_point *R, #endif #if defined(MBEDTLS_ECP_DOUBLE_JAC_ALT) - if ( mbedtls_internal_ecp_grp_capable( grp ) ) - { - return mbedtls_internal_ecp_double_jac( grp, R, P ); - } + if( mbedtls_internal_ecp_grp_capable( grp ) ) + return( mbedtls_internal_ecp_double_jac( grp, R, P ) ); #endif /* MBEDTLS_ECP_DOUBLE_JAC_ALT */ mbedtls_mpi_init( &M ); mbedtls_mpi_init( &S ); mbedtls_mpi_init( &T ); mbedtls_mpi_init( &U ); @@ -1027,10 +1361,8 @@ static int ecp_add_mixed( const mbedtls_ecp_group *grp, mbedtls_ecp_point *R, #endif #if defined(MBEDTLS_ECP_ADD_MIXED_ALT) - if ( mbedtls_internal_ecp_grp_capable( grp ) ) - { - return mbedtls_internal_ecp_add_mixed( grp, R, P, Q ); - } + if( mbedtls_internal_ecp_grp_capable( grp ) ) + return( mbedtls_internal_ecp_add_mixed( grp, R, P, Q ) ); #endif /* MBEDTLS_ECP_ADD_MIXED_ALT */ /* @@ -1114,10 +1446,8 @@ static int ecp_randomize_jac( const mbedtls_ecp_group *grp, mbedtls_ecp_point *p int count = 0; #if defined(MBEDTLS_ECP_RANDOMIZE_JAC_ALT) - if ( mbedtls_internal_ecp_grp_capable( grp ) ) - { - return mbedtls_internal_ecp_randomize_jac( grp, pt, f_rng, p_rng ); - } + if( mbedtls_internal_ecp_grp_capable( grp ) ) + return( mbedtls_internal_ecp_randomize_jac( grp, pt, f_rng, p_rng ) ); #endif /* MBEDTLS_ECP_RANDOMIZE_JAC_ALT */ p_size = ( grp->pbits + 7 ) / 8; @@ -1173,11 +1503,38 @@ cleanup: * modified version that provides resistance to SPA by avoiding zero * digits in the representation as in [3]. We modify the method further by * requiring that all K_i be odd, which has the small cost that our - * representation uses one more K_i, due to carries. + * representation uses one more K_i, due to carries, but saves on the size of + * the precomputed table. * - * Also, for the sake of compactness, only the seven low-order bits of x[i] - * are used to represent K_i, and the msb of x[i] encodes the the sign (s_i in - * the paper): it is set if and only if if s_i == -1; + * Summary of the comb method and its modifications: + * + * - The goal is to compute m*P for some w*d-bit integer m. + * + * - The basic comb method splits m into the w-bit integers + * x[0] .. x[d-1] where x[i] consists of the bits in m whose + * index has residue i modulo d, and computes m * P as + * S[x[0]] + 2 * S[x[1]] + .. + 2^(d-1) S[x[d-1]], where + * S[i_{w-1} .. i_0] := i_{w-1} 2^{(w-1)d} P + ... + i_1 2^d P + i_0 P. + * + * - If it happens that, say, x[i+1]=0 (=> S[x[i+1]]=0), one can replace the sum by + * .. + 2^{i-1} S[x[i-1]] - 2^i S[x[i]] + 2^{i+1} S[x[i]] + 2^{i+2} S[x[i+2]] .., + * thereby successively converting it into a form where all summands + * are nonzero, at the cost of negative summands. This is the basic idea of [3]. + * + * - More generally, even if x[i+1] != 0, we can first transform the sum as + * .. - 2^i S[x[i]] + 2^{i+1} ( S[x[i]] + S[x[i+1]] ) + 2^{i+2} S[x[i+2]] .., + * and then replace S[x[i]] + S[x[i+1]] = S[x[i] ^ x[i+1]] + 2 S[x[i] & x[i+1]]. + * Performing and iterating this procedure for those x[i] that are even + * (keeping track of carry), we can transform the original sum into one of the form + * S[x'[0]] +- 2 S[x'[1]] +- .. +- 2^{d-1} S[x'[d-1]] + 2^d S[x'[d]] + * with all x'[i] odd. It is therefore only necessary to know S at odd indices, + * which is why we are only computing half of it in the first place in + * ecp_precompute_comb and accessing it with index abs(i) / 2 in ecp_select_comb. + * + * - For the sake of compactness, only the seven low-order bits of x[i] + * are used to represent its absolute value (K_i in the paper), and the msb + * of x[i] encodes the sign (s_i in the paper): it is set if and only if + * if s_i == -1; * * Calling conventions: * - x is an array of size d + 1 @@ -1186,8 +1543,8 @@ cleanup: * - m is the MPI, expected to be odd and such that bitlength(m) <= w * d * (the result will be incorrect if these assumptions are not satisfied) */ -static void ecp_comb_fixed( unsigned char x[], size_t d, - unsigned char w, const mbedtls_mpi *m ) +static void ecp_comb_recode_core( unsigned char x[], size_t d, + unsigned char w, const mbedtls_mpi *m ) { size_t i, j; unsigned char c, cc, adjust; @@ -1217,70 +1574,178 @@ static void ecp_comb_fixed( unsigned char x[], size_t d, } /* - * Precompute points for the comb method + * Precompute points for the adapted comb method * - * If i = i_{w-1} ... i_1 is the binary representation of i, then - * T[i] = i_{w-1} 2^{(w-1)d} P + ... + i_1 2^d P + P + * Assumption: T must be able to hold 2^{w - 1} elements. * - * T must be able to hold 2^{w - 1} elements + * Operation: If i = i_{w-1} ... i_1 is the binary representation of i, + * sets T[i] = i_{w-1} 2^{(w-1)d} P + ... + i_1 2^d P + P. * * Cost: d(w-1) D + (2^{w-1} - 1) A + 1 N(w-1) + 1 N(2^{w-1} - 1) + * + * Note: Even comb values (those where P would be omitted from the + * sum defining T[i] above) are not needed in our adaption + * the comb method. See ecp_comb_recode_core(). + * + * This function currently works in four steps: + * (1) [dbl] Computation of intermediate T[i] for 2-power values of i + * (2) [norm_dbl] Normalization of coordinates of these T[i] + * (3) [add] Computation of all T[i] + * (4) [norm_add] Normalization of all T[i] + * + * Step 1 can be interrupted but not the others; together with the final + * coordinate normalization they are the largest steps done at once, depending + * on the window size. Here are operation counts for P-256: + * + * step (2) (3) (4) + * w = 5 142 165 208 + * w = 4 136 77 160 + * w = 3 130 33 136 + * w = 2 124 11 124 + * + * So if ECC operations are blocking for too long even with a low max_ops + * value, it's useful to set MBEDTLS_ECP_WINDOW_SIZE to a lower value in order + * to minimize maximum blocking time. */ static int ecp_precompute_comb( const mbedtls_ecp_group *grp, mbedtls_ecp_point T[], const mbedtls_ecp_point *P, - unsigned char w, size_t d ) + unsigned char w, size_t d, + mbedtls_ecp_restart_ctx *rs_ctx ) { int ret; - unsigned char i, k; - size_t j; + unsigned char i; + size_t j = 0; + const unsigned char T_size = 1U << ( w - 1 ); mbedtls_ecp_point *cur, *TT[COMB_MAX_PRE - 1]; +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->rsm != NULL ) + { + if( rs_ctx->rsm->state == ecp_rsm_pre_dbl ) + goto dbl; + if( rs_ctx->rsm->state == ecp_rsm_pre_norm_dbl ) + goto norm_dbl; + if( rs_ctx->rsm->state == ecp_rsm_pre_add ) + goto add; + if( rs_ctx->rsm->state == ecp_rsm_pre_norm_add ) + goto norm_add; + } +#else + (void) rs_ctx; +#endif + +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->rsm != NULL ) + { + rs_ctx->rsm->state = ecp_rsm_pre_dbl; + + /* initial state for the loop */ + rs_ctx->rsm->i = 0; + } + +dbl: +#endif /* * Set T[0] = P and * T[2^{l-1}] = 2^{dl} P for l = 1 .. w-1 (this is not the final value) */ MBEDTLS_MPI_CHK( mbedtls_ecp_copy( &T[0], P ) ); - k = 0; - for( i = 1; i < ( 1U << ( w - 1 ) ); i <<= 1 ) +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->rsm != NULL && rs_ctx->rsm->i != 0 ) + j = rs_ctx->rsm->i; + else +#endif + j = 0; + + for( ; j < d * ( w - 1 ); j++ ) { + MBEDTLS_ECP_BUDGET( MBEDTLS_ECP_OPS_DBL ); + + i = 1U << ( j / d ); cur = T + i; - MBEDTLS_MPI_CHK( mbedtls_ecp_copy( cur, T + ( i >> 1 ) ) ); - for( j = 0; j < d; j++ ) - MBEDTLS_MPI_CHK( ecp_double_jac( grp, cur, cur ) ); - TT[k++] = cur; + if( j % d == 0 ) + MBEDTLS_MPI_CHK( mbedtls_ecp_copy( cur, T + ( i >> 1 ) ) ); + + MBEDTLS_MPI_CHK( ecp_double_jac( grp, cur, cur ) ); } - MBEDTLS_MPI_CHK( ecp_normalize_jac_many( grp, TT, k ) ); +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->rsm != NULL ) + rs_ctx->rsm->state = ecp_rsm_pre_norm_dbl; +norm_dbl: +#endif + /* + * Normalize current elements in T. As T has holes, + * use an auxiliary array of pointers to elements in T. + */ + j = 0; + for( i = 1; i < T_size; i <<= 1 ) + TT[j++] = T + i; + + MBEDTLS_ECP_BUDGET( MBEDTLS_ECP_OPS_INV + 6 * j - 2 ); + + MBEDTLS_MPI_CHK( ecp_normalize_jac_many( grp, TT, j ) ); + +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->rsm != NULL ) + rs_ctx->rsm->state = ecp_rsm_pre_add; + +add: +#endif /* * Compute the remaining ones using the minimal number of additions * Be careful to update T[2^l] only after using it! */ - k = 0; - for( i = 1; i < ( 1U << ( w - 1 ) ); i <<= 1 ) + MBEDTLS_ECP_BUDGET( ( T_size - 1 ) * MBEDTLS_ECP_OPS_ADD ); + + for( i = 1; i < T_size; i <<= 1 ) { j = i; while( j-- ) - { MBEDTLS_MPI_CHK( ecp_add_mixed( grp, &T[i + j], &T[j], &T[i] ) ); - TT[k++] = &T[i + j]; - } } - MBEDTLS_MPI_CHK( ecp_normalize_jac_many( grp, TT, k ) ); +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->rsm != NULL ) + rs_ctx->rsm->state = ecp_rsm_pre_norm_add; + +norm_add: +#endif + /* + * Normalize final elements in T. Even though there are no holes now, we + * still need the auxiliary array for homogeneity with the previous + * call. Also, skip T[0] which is already normalised, being a copy of P. + */ + for( j = 0; j + 1 < T_size; j++ ) + TT[j] = T + j + 1; + + MBEDTLS_ECP_BUDGET( MBEDTLS_ECP_OPS_INV + 6 * j - 2 ); + + MBEDTLS_MPI_CHK( ecp_normalize_jac_many( grp, TT, j ) ); cleanup: +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->rsm != NULL && + ret == MBEDTLS_ERR_ECP_IN_PROGRESS ) + { + if( rs_ctx->rsm->state == ecp_rsm_pre_dbl ) + rs_ctx->rsm->i = j; + } +#endif return( ret ); } /* * Select precomputed point: R = sign(i) * T[ abs(i) / 2 ] + * + * See ecp_comb_recode_core() for background */ static int ecp_select_comb( const mbedtls_ecp_group *grp, mbedtls_ecp_point *R, - const mbedtls_ecp_point T[], unsigned char t_len, + const mbedtls_ecp_point T[], unsigned char T_size, unsigned char i ) { int ret; @@ -1290,7 +1755,7 @@ static int ecp_select_comb( const mbedtls_ecp_group *grp, mbedtls_ecp_point *R, ii = ( i & 0x7Fu ) >> 1; /* Read the whole table to thwart cache-based timing attacks */ - for( j = 0; j < t_len; j++ ) + for( j = 0; j < T_size; j++ ) { MBEDTLS_MPI_CHK( mbedtls_mpi_safe_cond_assign( &R->X, &T[j].X, j == ii ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_safe_cond_assign( &R->Y, &T[j].Y, j == ii ) ); @@ -1310,10 +1775,11 @@ cleanup: * Cost: d A + d D + 1 R */ static int ecp_mul_comb_core( const mbedtls_ecp_group *grp, mbedtls_ecp_point *R, - const mbedtls_ecp_point T[], unsigned char t_len, + const mbedtls_ecp_point T[], unsigned char T_size, const unsigned char x[], size_t d, int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) + void *p_rng, + mbedtls_ecp_restart_ctx *rs_ctx ) { int ret; mbedtls_ecp_point Txi; @@ -1321,17 +1787,42 @@ static int ecp_mul_comb_core( const mbedtls_ecp_group *grp, mbedtls_ecp_point *R mbedtls_ecp_point_init( &Txi ); - /* Start with a non-zero point and randomize its coordinates */ - i = d; - MBEDTLS_MPI_CHK( ecp_select_comb( grp, R, T, t_len, x[i] ) ); - MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &R->Z, 1 ) ); - if( f_rng != 0 ) - MBEDTLS_MPI_CHK( ecp_randomize_jac( grp, R, f_rng, p_rng ) ); +#if !defined(MBEDTLS_ECP_RESTARTABLE) + (void) rs_ctx; +#endif + +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->rsm != NULL && + rs_ctx->rsm->state != ecp_rsm_comb_core ) + { + rs_ctx->rsm->i = 0; + rs_ctx->rsm->state = ecp_rsm_comb_core; + } + + /* new 'if' instead of nested for the sake of the 'else' branch */ + if( rs_ctx != NULL && rs_ctx->rsm != NULL && rs_ctx->rsm->i != 0 ) + { + /* restore current index (R already pointing to rs_ctx->rsm->R) */ + i = rs_ctx->rsm->i; + } + else +#endif + { + /* Start with a non-zero point and randomize its coordinates */ + i = d; + MBEDTLS_MPI_CHK( ecp_select_comb( grp, R, T, T_size, x[i] ) ); + MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &R->Z, 1 ) ); + if( f_rng != 0 ) + MBEDTLS_MPI_CHK( ecp_randomize_jac( grp, R, f_rng, p_rng ) ); + } - while( i-- != 0 ) + while( i != 0 ) { + MBEDTLS_ECP_BUDGET( MBEDTLS_ECP_OPS_DBL + MBEDTLS_ECP_OPS_ADD ); + --i; + MBEDTLS_MPI_CHK( ecp_double_jac( grp, R, R ) ); - MBEDTLS_MPI_CHK( ecp_select_comb( grp, &Txi, T, t_len, x[i] ) ); + MBEDTLS_MPI_CHK( ecp_select_comb( grp, &Txi, T, T_size, x[i] ) ); MBEDTLS_MPI_CHK( ecp_add_mixed( grp, R, R, &Txi ) ); } @@ -1339,32 +1830,130 @@ cleanup: mbedtls_ecp_point_free( &Txi ); +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->rsm != NULL && + ret == MBEDTLS_ERR_ECP_IN_PROGRESS ) + { + rs_ctx->rsm->i = i; + /* no need to save R, already pointing to rs_ctx->rsm->R */ + } +#endif + return( ret ); } /* - * Multiplication using the comb method, - * for curves in short Weierstrass form - */ -static int ecp_mul_comb( mbedtls_ecp_group *grp, mbedtls_ecp_point *R, - const mbedtls_mpi *m, const mbedtls_ecp_point *P, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) + * Recode the scalar to get constant-time comb multiplication + * + * As the actual scalar recoding needs an odd scalar as a starting point, + * this wrapper ensures that by replacing m by N - m if necessary, and + * informs the caller that the result of multiplication will be negated. + * + * This works because we only support large prime order for Short Weierstrass + * curves, so N is always odd hence either m or N - m is. + * + * See ecp_comb_recode_core() for background. + */ +static int ecp_comb_recode_scalar( const mbedtls_ecp_group *grp, + const mbedtls_mpi *m, + unsigned char k[COMB_MAX_D + 1], + size_t d, + unsigned char w, + unsigned char *parity_trick ) { int ret; - unsigned char w, m_is_odd, p_eq_g, pre_len, i; - size_t d; - unsigned char k[COMB_MAX_D + 1]; - mbedtls_ecp_point *T; mbedtls_mpi M, mm; mbedtls_mpi_init( &M ); mbedtls_mpi_init( &mm ); - /* we need N to be odd to trnaform m in an odd number, check now */ + /* N is always odd (see above), just make extra sure */ if( mbedtls_mpi_get_bit( &grp->N, 0 ) != 1 ) return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA ); + /* do we need the parity trick? */ + *parity_trick = ( mbedtls_mpi_get_bit( m, 0 ) == 0 ); + + /* execute parity fix in constant time */ + MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &M, m ) ); + MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &mm, &grp->N, m ) ); + MBEDTLS_MPI_CHK( mbedtls_mpi_safe_cond_assign( &M, &mm, *parity_trick ) ); + + /* actual scalar recoding */ + ecp_comb_recode_core( k, d, w, &M ); + +cleanup: + mbedtls_mpi_free( &mm ); + mbedtls_mpi_free( &M ); + + return( ret ); +} + +/* + * Perform comb multiplication (for short Weierstrass curves) + * once the auxiliary table has been pre-computed. + * + * Scalar recoding may use a parity trick that makes us compute -m * P, + * if that is the case we'll need to recover m * P at the end. + */ +static int ecp_mul_comb_after_precomp( const mbedtls_ecp_group *grp, + mbedtls_ecp_point *R, + const mbedtls_mpi *m, + const mbedtls_ecp_point *T, + unsigned char T_size, + unsigned char w, + size_t d, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng, + mbedtls_ecp_restart_ctx *rs_ctx ) +{ + int ret; + unsigned char parity_trick; + unsigned char k[COMB_MAX_D + 1]; + mbedtls_ecp_point *RR = R; + +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->rsm != NULL ) + { + RR = &rs_ctx->rsm->R; + + if( rs_ctx->rsm->state == ecp_rsm_final_norm ) + goto final_norm; + } +#endif + + MBEDTLS_MPI_CHK( ecp_comb_recode_scalar( grp, m, k, d, w, + &parity_trick ) ); + MBEDTLS_MPI_CHK( ecp_mul_comb_core( grp, RR, T, T_size, k, d, + f_rng, p_rng, rs_ctx ) ); + MBEDTLS_MPI_CHK( ecp_safe_invert_jac( grp, RR, parity_trick ) ); + +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->rsm != NULL ) + rs_ctx->rsm->state = ecp_rsm_final_norm; + +final_norm: +#endif + MBEDTLS_ECP_BUDGET( MBEDTLS_ECP_OPS_INV ); + MBEDTLS_MPI_CHK( ecp_normalize_jac( grp, RR ) ); + +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->rsm != NULL ) + MBEDTLS_MPI_CHK( mbedtls_ecp_copy( R, RR ) ); +#endif + +cleanup: + return( ret ); +} + +/* + * Pick window size based on curve size and whether we optimize for base point + */ +static unsigned char ecp_pick_window_size( const mbedtls_ecp_group *grp, + unsigned char p_eq_g ) +{ + unsigned char w; + /* * Minimize the number of multiplications, that is minimize * 10 * d * w + 18 * 2^(w-1) + 11 * d + 7 * w, with d = ceil( nbits / w ) @@ -1377,14 +1966,8 @@ static int ecp_mul_comb( mbedtls_ecp_group *grp, mbedtls_ecp_point *R, * Just adding one avoids upping the cost of the first mul too much, * and the memory cost too. */ -#if MBEDTLS_ECP_FIXED_POINT_OPTIM == 1 - p_eq_g = ( mbedtls_mpi_cmp_mpi( &P->Y, &grp->G.Y ) == 0 && - mbedtls_mpi_cmp_mpi( &P->X, &grp->G.X ) == 0 ); if( p_eq_g ) w++; -#else - p_eq_g = 0; -#endif /* * Make sure w is within bounds. @@ -1395,70 +1978,140 @@ static int ecp_mul_comb( mbedtls_ecp_group *grp, mbedtls_ecp_point *R, if( w >= grp->nbits ) w = 2; - /* Other sizes that depend on w */ - pre_len = 1U << ( w - 1 ); + return( w ); +} + +/* + * Multiplication using the comb method - for curves in short Weierstrass form + * + * This function is mainly responsible for administrative work: + * - managing the restart context if enabled + * - managing the table of precomputed points (passed between the below two + * functions): allocation, computation, ownership tranfer, freeing. + * + * It delegates the actual arithmetic work to: + * ecp_precompute_comb() and ecp_mul_comb_with_precomp() + * + * See comments on ecp_comb_recode_core() regarding the computation strategy. + */ +static int ecp_mul_comb( mbedtls_ecp_group *grp, mbedtls_ecp_point *R, + const mbedtls_mpi *m, const mbedtls_ecp_point *P, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng, + mbedtls_ecp_restart_ctx *rs_ctx ) +{ + int ret; + unsigned char w, p_eq_g, i; + size_t d; + unsigned char T_size, T_ok; + mbedtls_ecp_point *T; + + ECP_RS_ENTER( rsm ); + + /* Is P the base point ? */ +#if MBEDTLS_ECP_FIXED_POINT_OPTIM == 1 + p_eq_g = ( mbedtls_mpi_cmp_mpi( &P->Y, &grp->G.Y ) == 0 && + mbedtls_mpi_cmp_mpi( &P->X, &grp->G.X ) == 0 ); +#else + p_eq_g = 0; +#endif + + /* Pick window size and deduce related sizes */ + w = ecp_pick_window_size( grp, p_eq_g ); + T_size = 1U << ( w - 1 ); d = ( grp->nbits + w - 1 ) / w; - /* - * Prepare precomputed points: if P == G we want to - * use grp->T if already initialized, or initialize it. - */ - T = p_eq_g ? grp->T : NULL; + /* Pre-computed table: do we have it already for the base point? */ + if( p_eq_g && grp->T != NULL ) + { + /* second pointer to the same table, will be deleted on exit */ + T = grp->T; + T_ok = 1; + } + else +#if defined(MBEDTLS_ECP_RESTARTABLE) + /* Pre-computed table: do we have one in progress? complete? */ + if( rs_ctx != NULL && rs_ctx->rsm != NULL && rs_ctx->rsm->T != NULL ) + { + /* transfer ownership of T from rsm to local function */ + T = rs_ctx->rsm->T; + rs_ctx->rsm->T = NULL; + rs_ctx->rsm->T_size = 0; - if( T == NULL ) + /* This effectively jumps to the call to mul_comb_after_precomp() */ + T_ok = rs_ctx->rsm->state >= ecp_rsm_comb_core; + } + else +#endif + /* Allocate table if we didn't have any */ { - T = mbedtls_calloc( pre_len, sizeof( mbedtls_ecp_point ) ); + T = mbedtls_calloc( T_size, sizeof( mbedtls_ecp_point ) ); if( T == NULL ) { ret = MBEDTLS_ERR_ECP_ALLOC_FAILED; goto cleanup; } - MBEDTLS_MPI_CHK( ecp_precompute_comb( grp, T, P, w, d ) ); + for( i = 0; i < T_size; i++ ) + mbedtls_ecp_point_init( &T[i] ); + + T_ok = 0; + } + + /* Compute table (or finish computing it) if not done already */ + if( !T_ok ) + { + MBEDTLS_MPI_CHK( ecp_precompute_comb( grp, T, P, w, d, rs_ctx ) ); if( p_eq_g ) { + /* almost transfer ownership of T to the group, but keep a copy of + * the pointer to use for calling the next function more easily */ grp->T = T; - grp->T_size = pre_len; + grp->T_size = T_size; } } - /* - * Make sure M is odd (M = m or M = N - m, since N is odd) - * using the fact that m * P = - (N - m) * P - */ - m_is_odd = ( mbedtls_mpi_get_bit( m, 0 ) == 1 ); - MBEDTLS_MPI_CHK( mbedtls_mpi_copy( &M, m ) ); - MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &mm, &grp->N, m ) ); - MBEDTLS_MPI_CHK( mbedtls_mpi_safe_cond_assign( &M, &mm, ! m_is_odd ) ); + /* Actual comb multiplication using precomputed points */ + MBEDTLS_MPI_CHK( ecp_mul_comb_after_precomp( grp, R, m, + T, T_size, w, d, + f_rng, p_rng, rs_ctx ) ); - /* - * Go for comb multiplication, R = M * P - */ - ecp_comb_fixed( k, d, w, &M ); - MBEDTLS_MPI_CHK( ecp_mul_comb_core( grp, R, T, pre_len, k, d, f_rng, p_rng ) ); +cleanup: - /* - * Now get m * P from M * P and normalize it - */ - MBEDTLS_MPI_CHK( ecp_safe_invert_jac( grp, R, ! m_is_odd ) ); - MBEDTLS_MPI_CHK( ecp_normalize_jac( grp, R ) ); + /* does T belong to the group? */ + if( T == grp->T ) + T = NULL; -cleanup: + /* does T belong to the restart context? */ +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->rsm != NULL && ret == MBEDTLS_ERR_ECP_IN_PROGRESS && T != NULL ) + { + /* transfer ownership of T from local function to rsm */ + rs_ctx->rsm->T_size = T_size; + rs_ctx->rsm->T = T; + T = NULL; + } +#endif - if( T != NULL && ! p_eq_g ) + /* did T belong to us? then let's destroy it! */ + if( T != NULL ) { - for( i = 0; i < pre_len; i++ ) + for( i = 0; i < T_size; i++ ) mbedtls_ecp_point_free( &T[i] ); mbedtls_free( T ); } - mbedtls_mpi_free( &M ); - mbedtls_mpi_free( &mm ); - + /* don't free R while in progress in case R == P */ +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( ret != MBEDTLS_ERR_ECP_IN_PROGRESS ) +#endif + /* prevent caller from using invalid value */ if( ret != 0 ) mbedtls_ecp_point_free( R ); + ECP_RS_LEAVE( rsm ); + return( ret ); } @@ -1482,10 +2135,8 @@ static int ecp_normalize_mxz( const mbedtls_ecp_group *grp, mbedtls_ecp_point *P int ret; #if defined(MBEDTLS_ECP_NORMALIZE_MXZ_ALT) - if ( mbedtls_internal_ecp_grp_capable( grp ) ) - { - return mbedtls_internal_ecp_normalize_mxz( grp, P ); - } + if( mbedtls_internal_ecp_grp_capable( grp ) ) + return( mbedtls_internal_ecp_normalize_mxz( grp, P ) ); #endif /* MBEDTLS_ECP_NORMALIZE_MXZ_ALT */ MBEDTLS_MPI_CHK( mbedtls_mpi_inv_mod( &P->Z, &P->Z, &grp->P ) ); @@ -1513,10 +2164,8 @@ static int ecp_randomize_mxz( const mbedtls_ecp_group *grp, mbedtls_ecp_point *P int count = 0; #if defined(MBEDTLS_ECP_RANDOMIZE_MXZ_ALT) - if ( mbedtls_internal_ecp_grp_capable( grp ) ) - { - return mbedtls_internal_ecp_randomize_mxz( grp, P, f_rng, p_rng ); - } + if( mbedtls_internal_ecp_grp_capable( grp ) ) + return( mbedtls_internal_ecp_randomize_mxz( grp, P, f_rng, p_rng ); #endif /* MBEDTLS_ECP_RANDOMIZE_MXZ_ALT */ p_size = ( grp->pbits + 7 ) / 8; @@ -1568,10 +2217,8 @@ static int ecp_double_add_mxz( const mbedtls_ecp_group *grp, mbedtls_mpi A, AA, B, BB, E, C, D, DA, CB; #if defined(MBEDTLS_ECP_DOUBLE_ADD_MXZ_ALT) - if ( mbedtls_internal_ecp_grp_capable( grp ) ) - { - return mbedtls_internal_ecp_double_add_mxz( grp, R, S, P, Q, d ); - } + if( mbedtls_internal_ecp_grp_capable( grp ) ) + return( mbedtls_internal_ecp_double_add_mxz( grp, R, S, P, Q, d ) ); #endif /* MBEDTLS_ECP_DOUBLE_ADD_MXZ_ALT */ mbedtls_mpi_init( &A ); mbedtls_mpi_init( &AA ); mbedtls_mpi_init( &B ); @@ -1668,54 +2315,85 @@ cleanup: #endif /* ECP_MONTGOMERY */ /* - * Multiplication R = m * P + * Restartable multiplication R = m * P */ -int mbedtls_ecp_mul( mbedtls_ecp_group *grp, mbedtls_ecp_point *R, +int mbedtls_ecp_mul_restartable( mbedtls_ecp_group *grp, mbedtls_ecp_point *R, const mbedtls_mpi *m, const mbedtls_ecp_point *P, - int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) + int (*f_rng)(void *, unsigned char *, size_t), void *p_rng, + mbedtls_ecp_restart_ctx *rs_ctx ) { int ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA; #if defined(MBEDTLS_ECP_INTERNAL_ALT) char is_grp_capable = 0; #endif - - /* Common sanity checks */ - if( mbedtls_mpi_cmp_int( &P->Z, 1 ) != 0 ) - return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA ); - - if( ( ret = mbedtls_ecp_check_privkey( grp, m ) ) != 0 || - ( ret = mbedtls_ecp_check_pubkey( grp, P ) ) != 0 ) - return( ret ); + ECP_VALIDATE_RET( grp != NULL ); + ECP_VALIDATE_RET( R != NULL ); + ECP_VALIDATE_RET( m != NULL ); + ECP_VALIDATE_RET( P != NULL ); + +#if defined(MBEDTLS_ECP_RESTARTABLE) + /* reset ops count for this call if top-level */ + if( rs_ctx != NULL && rs_ctx->depth++ == 0 ) + rs_ctx->ops_done = 0; +#endif #if defined(MBEDTLS_ECP_INTERNAL_ALT) - if ( is_grp_capable = mbedtls_internal_ecp_grp_capable( grp ) ) - { + if( ( is_grp_capable = mbedtls_internal_ecp_grp_capable( grp ) ) ) MBEDTLS_MPI_CHK( mbedtls_internal_ecp_init( grp ) ); +#endif /* MBEDTLS_ECP_INTERNAL_ALT */ + +#if defined(MBEDTLS_ECP_RESTARTABLE) + /* skip argument check when restarting */ + if( rs_ctx == NULL || rs_ctx->rsm == NULL ) +#endif + { + /* check_privkey is free */ + MBEDTLS_ECP_BUDGET( MBEDTLS_ECP_OPS_CHK ); + + /* Common sanity checks */ + MBEDTLS_MPI_CHK( mbedtls_ecp_check_privkey( grp, m ) ); + MBEDTLS_MPI_CHK( mbedtls_ecp_check_pubkey( grp, P ) ); } -#endif /* MBEDTLS_ECP_INTERNAL_ALT */ + ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA; #if defined(ECP_MONTGOMERY) if( ecp_get_type( grp ) == ECP_TYPE_MONTGOMERY ) - ret = ecp_mul_mxz( grp, R, m, P, f_rng, p_rng ); - + MBEDTLS_MPI_CHK( ecp_mul_mxz( grp, R, m, P, f_rng, p_rng ) ); #endif #if defined(ECP_SHORTWEIERSTRASS) if( ecp_get_type( grp ) == ECP_TYPE_SHORT_WEIERSTRASS ) - ret = ecp_mul_comb( grp, R, m, P, f_rng, p_rng ); - + MBEDTLS_MPI_CHK( ecp_mul_comb( grp, R, m, P, f_rng, p_rng, rs_ctx ) ); #endif -#if defined(MBEDTLS_ECP_INTERNAL_ALT) + cleanup: - if ( is_grp_capable ) - { +#if defined(MBEDTLS_ECP_INTERNAL_ALT) + if( is_grp_capable ) mbedtls_internal_ecp_free( grp ); - } - #endif /* MBEDTLS_ECP_INTERNAL_ALT */ + +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL ) + rs_ctx->depth--; +#endif + return( ret ); } +/* + * Multiplication R = m * P + */ +int mbedtls_ecp_mul( mbedtls_ecp_group *grp, mbedtls_ecp_point *R, + const mbedtls_mpi *m, const mbedtls_ecp_point *P, + int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) +{ + ECP_VALIDATE_RET( grp != NULL ); + ECP_VALIDATE_RET( R != NULL ); + ECP_VALIDATE_RET( m != NULL ); + ECP_VALIDATE_RET( P != NULL ); + return( mbedtls_ecp_mul_restartable( grp, R, m, P, f_rng, p_rng, NULL ) ); +} + #if defined(ECP_SHORTWEIERSTRASS) /* * Check that an affine point is valid as a public key, @@ -1773,7 +2451,8 @@ cleanup: static int mbedtls_ecp_mul_shortcuts( mbedtls_ecp_group *grp, mbedtls_ecp_point *R, const mbedtls_mpi *m, - const mbedtls_ecp_point *P ) + const mbedtls_ecp_point *P, + mbedtls_ecp_restart_ctx *rs_ctx ) { int ret; @@ -1789,7 +2468,8 @@ static int mbedtls_ecp_mul_shortcuts( mbedtls_ecp_group *grp, } else { - MBEDTLS_MPI_CHK( mbedtls_ecp_mul( grp, R, m, P, NULL, NULL ) ); + MBEDTLS_MPI_CHK( mbedtls_ecp_mul_restartable( grp, R, m, P, + NULL, NULL, rs_ctx ) ); } cleanup: @@ -1797,51 +2477,118 @@ cleanup: } /* - * Linear combination + * Restartable linear combination * NOT constant-time */ -int mbedtls_ecp_muladd( mbedtls_ecp_group *grp, mbedtls_ecp_point *R, +int mbedtls_ecp_muladd_restartable( + mbedtls_ecp_group *grp, mbedtls_ecp_point *R, const mbedtls_mpi *m, const mbedtls_ecp_point *P, - const mbedtls_mpi *n, const mbedtls_ecp_point *Q ) + const mbedtls_mpi *n, const mbedtls_ecp_point *Q, + mbedtls_ecp_restart_ctx *rs_ctx ) { int ret; mbedtls_ecp_point mP; + mbedtls_ecp_point *pmP = &mP; + mbedtls_ecp_point *pR = R; #if defined(MBEDTLS_ECP_INTERNAL_ALT) char is_grp_capable = 0; #endif + ECP_VALIDATE_RET( grp != NULL ); + ECP_VALIDATE_RET( R != NULL ); + ECP_VALIDATE_RET( m != NULL ); + ECP_VALIDATE_RET( P != NULL ); + ECP_VALIDATE_RET( n != NULL ); + ECP_VALIDATE_RET( Q != NULL ); if( ecp_get_type( grp ) != ECP_TYPE_SHORT_WEIERSTRASS ) return( MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE ); mbedtls_ecp_point_init( &mP ); - MBEDTLS_MPI_CHK( mbedtls_ecp_mul_shortcuts( grp, &mP, m, P ) ); - MBEDTLS_MPI_CHK( mbedtls_ecp_mul_shortcuts( grp, R, n, Q ) ); + ECP_RS_ENTER( ma ); -#if defined(MBEDTLS_ECP_INTERNAL_ALT) - if ( is_grp_capable = mbedtls_internal_ecp_grp_capable( grp ) ) +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->ma != NULL ) { - MBEDTLS_MPI_CHK( mbedtls_internal_ecp_init( grp ) ); + /* redirect intermediate results to restart context */ + pmP = &rs_ctx->ma->mP; + pR = &rs_ctx->ma->R; + + /* jump to next operation */ + if( rs_ctx->ma->state == ecp_rsma_mul2 ) + goto mul2; + if( rs_ctx->ma->state == ecp_rsma_add ) + goto add; + if( rs_ctx->ma->state == ecp_rsma_norm ) + goto norm; } +#endif /* MBEDTLS_ECP_RESTARTABLE */ + MBEDTLS_MPI_CHK( mbedtls_ecp_mul_shortcuts( grp, pmP, m, P, rs_ctx ) ); +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->ma != NULL ) + rs_ctx->ma->state = ecp_rsma_mul2; + +mul2: +#endif + MBEDTLS_MPI_CHK( mbedtls_ecp_mul_shortcuts( grp, pR, n, Q, rs_ctx ) ); + +#if defined(MBEDTLS_ECP_INTERNAL_ALT) + if( ( is_grp_capable = mbedtls_internal_ecp_grp_capable( grp ) ) ) + MBEDTLS_MPI_CHK( mbedtls_internal_ecp_init( grp ) ); #endif /* MBEDTLS_ECP_INTERNAL_ALT */ - MBEDTLS_MPI_CHK( ecp_add_mixed( grp, R, &mP, R ) ); - MBEDTLS_MPI_CHK( ecp_normalize_jac( grp, R ) ); -cleanup: +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->ma != NULL ) + rs_ctx->ma->state = ecp_rsma_add; + +add: +#endif + MBEDTLS_ECP_BUDGET( MBEDTLS_ECP_OPS_ADD ); + MBEDTLS_MPI_CHK( ecp_add_mixed( grp, pR, pmP, pR ) ); +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->ma != NULL ) + rs_ctx->ma->state = ecp_rsma_norm; + +norm: +#endif + MBEDTLS_ECP_BUDGET( MBEDTLS_ECP_OPS_INV ); + MBEDTLS_MPI_CHK( ecp_normalize_jac( grp, pR ) ); + +#if defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && rs_ctx->ma != NULL ) + MBEDTLS_MPI_CHK( mbedtls_ecp_copy( R, pR ) ); +#endif +cleanup: #if defined(MBEDTLS_ECP_INTERNAL_ALT) - if ( is_grp_capable ) - { + if( is_grp_capable ) mbedtls_internal_ecp_free( grp ); - } - #endif /* MBEDTLS_ECP_INTERNAL_ALT */ + mbedtls_ecp_point_free( &mP ); + ECP_RS_LEAVE( ma ); + return( ret ); } +/* + * Linear combination + * NOT constant-time + */ +int mbedtls_ecp_muladd( mbedtls_ecp_group *grp, mbedtls_ecp_point *R, + const mbedtls_mpi *m, const mbedtls_ecp_point *P, + const mbedtls_mpi *n, const mbedtls_ecp_point *Q ) +{ + ECP_VALIDATE_RET( grp != NULL ); + ECP_VALIDATE_RET( R != NULL ); + ECP_VALIDATE_RET( m != NULL ); + ECP_VALIDATE_RET( P != NULL ); + ECP_VALIDATE_RET( n != NULL ); + ECP_VALIDATE_RET( Q != NULL ); + return( mbedtls_ecp_muladd_restartable( grp, R, m, P, n, Q, NULL ) ); +} #if defined(ECP_MONTGOMERY) /* @@ -1862,8 +2609,12 @@ static int ecp_check_pubkey_mx( const mbedtls_ecp_group *grp, const mbedtls_ecp_ /* * Check that a point is valid as a public key */ -int mbedtls_ecp_check_pubkey( const mbedtls_ecp_group *grp, const mbedtls_ecp_point *pt ) +int mbedtls_ecp_check_pubkey( const mbedtls_ecp_group *grp, + const mbedtls_ecp_point *pt ) { + ECP_VALIDATE_RET( grp != NULL ); + ECP_VALIDATE_RET( pt != NULL ); + /* Must use affine coordinates */ if( mbedtls_mpi_cmp_int( &pt->Z, 1 ) != 0 ) return( MBEDTLS_ERR_ECP_INVALID_KEY ); @@ -1882,8 +2633,12 @@ int mbedtls_ecp_check_pubkey( const mbedtls_ecp_group *grp, const mbedtls_ecp_po /* * Check that an mbedtls_mpi is valid as a private key */ -int mbedtls_ecp_check_privkey( const mbedtls_ecp_group *grp, const mbedtls_mpi *d ) +int mbedtls_ecp_check_privkey( const mbedtls_ecp_group *grp, + const mbedtls_mpi *d ) { + ECP_VALIDATE_RET( grp != NULL ); + ECP_VALIDATE_RET( d != NULL ); + #if defined(ECP_MONTGOMERY) if( ecp_get_type( grp ) == ECP_TYPE_MONTGOMERY ) { @@ -1892,7 +2647,6 @@ int mbedtls_ecp_check_privkey( const mbedtls_ecp_group *grp, const mbedtls_mpi * mbedtls_mpi_get_bit( d, 1 ) != 0 || mbedtls_mpi_bitlen( d ) - 1 != grp->nbits ) /* mbedtls_mpi_bitlen is one-based! */ return( MBEDTLS_ERR_ECP_INVALID_KEY ); - else /* see [Curve25519] page 5 */ if( grp->nbits == 254 && mbedtls_mpi_get_bit( d, 2 ) != 0 ) @@ -1917,16 +2671,21 @@ int mbedtls_ecp_check_privkey( const mbedtls_ecp_group *grp, const mbedtls_mpi * } /* - * Generate a keypair with configurable base point + * Generate a private key */ -int mbedtls_ecp_gen_keypair_base( mbedtls_ecp_group *grp, - const mbedtls_ecp_point *G, - mbedtls_mpi *d, mbedtls_ecp_point *Q, +int mbedtls_ecp_gen_privkey( const mbedtls_ecp_group *grp, + mbedtls_mpi *d, int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) { - int ret; - size_t n_size = ( grp->nbits + 7 ) / 8; + int ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA; + size_t n_size; + + ECP_VALIDATE_RET( grp != NULL ); + ECP_VALIDATE_RET( d != NULL ); + ECP_VALIDATE_RET( f_rng != NULL ); + + n_size = ( grp->nbits + 7 ) / 8; #if defined(ECP_MONTGOMERY) if( ecp_get_type( grp ) == ECP_TYPE_MONTGOMERY ) @@ -1954,8 +2713,8 @@ int mbedtls_ecp_gen_keypair_base( mbedtls_ecp_group *grp, MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( d, 2, 0 ) ); } } - else #endif /* ECP_MONTGOMERY */ + #if defined(ECP_SHORTWEIERSTRASS) if( ecp_get_type( grp ) == ECP_TYPE_SHORT_WEIERSTRASS ) { @@ -1989,15 +2748,33 @@ int mbedtls_ecp_gen_keypair_base( mbedtls_ecp_group *grp, while( mbedtls_mpi_cmp_int( d, 1 ) < 0 || mbedtls_mpi_cmp_mpi( d, &grp->N ) >= 0 ); } - else #endif /* ECP_SHORTWEIERSTRASS */ - return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA ); cleanup: - if( ret != 0 ) - return( ret ); + return( ret ); +} - return( mbedtls_ecp_mul( grp, Q, d, G, f_rng, p_rng ) ); +/* + * Generate a keypair with configurable base point + */ +int mbedtls_ecp_gen_keypair_base( mbedtls_ecp_group *grp, + const mbedtls_ecp_point *G, + mbedtls_mpi *d, mbedtls_ecp_point *Q, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng ) +{ + int ret; + ECP_VALIDATE_RET( grp != NULL ); + ECP_VALIDATE_RET( d != NULL ); + ECP_VALIDATE_RET( G != NULL ); + ECP_VALIDATE_RET( Q != NULL ); + ECP_VALIDATE_RET( f_rng != NULL ); + + MBEDTLS_MPI_CHK( mbedtls_ecp_gen_privkey( grp, d, f_rng, p_rng ) ); + MBEDTLS_MPI_CHK( mbedtls_ecp_mul( grp, Q, d, G, f_rng, p_rng ) ); + +cleanup: + return( ret ); } /* @@ -2008,6 +2785,11 @@ int mbedtls_ecp_gen_keypair( mbedtls_ecp_group *grp, int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) { + ECP_VALIDATE_RET( grp != NULL ); + ECP_VALIDATE_RET( d != NULL ); + ECP_VALIDATE_RET( Q != NULL ); + ECP_VALIDATE_RET( f_rng != NULL ); + return( mbedtls_ecp_gen_keypair_base( grp, &grp->G, d, Q, f_rng, p_rng ) ); } @@ -2018,6 +2800,8 @@ int mbedtls_ecp_gen_key( mbedtls_ecp_group_id grp_id, mbedtls_ecp_keypair *key, int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) { int ret; + ECP_VALIDATE_RET( key != NULL ); + ECP_VALIDATE_RET( f_rng != NULL ); if( ( ret = mbedtls_ecp_group_load( &key->grp, grp_id ) ) != 0 ) return( ret ); @@ -2033,6 +2817,8 @@ int mbedtls_ecp_check_pub_priv( const mbedtls_ecp_keypair *pub, const mbedtls_ec int ret; mbedtls_ecp_point Q; mbedtls_ecp_group grp; + ECP_VALIDATE_RET( pub != NULL ); + ECP_VALIDATE_RET( prv != NULL ); if( pub->grp.id == MBEDTLS_ECP_DP_NONE || pub->grp.id != prv->grp.id || diff --git a/thirdparty/mbedtls/library/ecp_curves.c b/thirdparty/mbedtls/library/ecp_curves.c index 68e2441ae8..731621dc3c 100644 --- a/thirdparty/mbedtls/library/ecp_curves.c +++ b/thirdparty/mbedtls/library/ecp_curves.c @@ -28,11 +28,18 @@ #if defined(MBEDTLS_ECP_C) #include "mbedtls/ecp.h" +#include "mbedtls/platform_util.h" #include <string.h> #if !defined(MBEDTLS_ECP_ALT) +/* Parameter validation macros based on platform_util.h */ +#define ECP_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_ECP_BAD_INPUT_DATA ) +#define ECP_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + #if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \ !defined(inline) && !defined(__cplusplus) #define inline __inline @@ -746,6 +753,7 @@ cleanup: */ int mbedtls_ecp_group_load( mbedtls_ecp_group *grp, mbedtls_ecp_group_id id ) { + ECP_VALIDATE_RET( grp != NULL ); mbedtls_ecp_group_free( grp ); grp->id = id; diff --git a/thirdparty/mbedtls/library/entropy_poll.c b/thirdparty/mbedtls/library/entropy_poll.c index f44a753f4d..4556f88a55 100644 --- a/thirdparty/mbedtls/library/entropy_poll.c +++ b/thirdparty/mbedtls/library/entropy_poll.c @@ -61,43 +61,28 @@ #define _WIN32_WINNT 0x0400 #endif #include <windows.h> -#include <bcrypt.h> -#if defined(_MSC_VER) && _MSC_VER <= 1600 -/* Visual Studio 2010 and earlier issue a warning when both <stdint.h> and - * <intsafe.h> are included, as they redefine a number of <TYPE>_MAX constants. - * These constants are guaranteed to be the same, though, so we suppress the - * warning when including intsafe.h. - */ -#pragma warning( push ) -#pragma warning( disable : 4005 ) -#endif -#include <intsafe.h> -#if defined(_MSC_VER) && _MSC_VER <= 1600 -#pragma warning( pop ) -#endif +#include <wincrypt.h> int mbedtls_platform_entropy_poll( void *data, unsigned char *output, size_t len, size_t *olen ) { - ULONG len_as_ulong = 0; + HCRYPTPROV provider; ((void) data); *olen = 0; - /* - * BCryptGenRandom takes ULONG for size, which is smaller than size_t on - * 64-bit Windows platforms. Ensure len's value can be safely converted into - * a ULONG. - */ - if ( FAILED( SizeTToULong( len, &len_as_ulong ) ) ) + if( CryptAcquireContext( &provider, NULL, NULL, + PROV_RSA_FULL, CRYPT_VERIFYCONTEXT ) == FALSE ) { return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED ); } - if ( !BCRYPT_SUCCESS( BCryptGenRandom( NULL, output, len_as_ulong, BCRYPT_USE_SYSTEM_PREFERRED_RNG ) ) ) + if( CryptGenRandom( provider, (DWORD) len, output ) == FALSE ) { + CryptReleaseContext( provider, 0 ); return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED ); } + CryptReleaseContext( provider, 0 ); *olen = len; return( 0 ); @@ -114,6 +99,7 @@ int mbedtls_platform_entropy_poll( void *data, unsigned char *output, size_t len #include <sys/syscall.h> #if defined(SYS_getrandom) #define HAVE_GETRANDOM +#include <errno.h> static int getrandom_wrapper( void *buf, size_t buflen, unsigned int flags ) { @@ -123,47 +109,8 @@ static int getrandom_wrapper( void *buf, size_t buflen, unsigned int flags ) memset( buf, 0, buflen ); #endif #endif - return( syscall( SYS_getrandom, buf, buflen, flags ) ); } - -#include <sys/utsname.h> -/* Check if version is at least 3.17.0 */ -static int check_version_3_17_plus( void ) -{ - int minor; - struct utsname un; - const char *ver; - - /* Get version information */ - uname(&un); - ver = un.release; - - /* Check major version; assume a single digit */ - if( ver[0] < '3' || ver[0] > '9' || ver [1] != '.' ) - return( -1 ); - - if( ver[0] - '0' > 3 ) - return( 0 ); - - /* Ok, so now we know major == 3, check minor. - * Assume 1 or 2 digits. */ - if( ver[2] < '0' || ver[2] > '9' ) - return( -1 ); - - minor = ver[2] - '0'; - - if( ver[3] >= '0' && ver[3] <= '9' ) - minor = 10 * minor + ver[3] - '0'; - else if( ver [3] != '.' ) - return( -1 ); - - if( minor < 17 ) - return( -1 ); - - return( 0 ); -} -static int has_getrandom = -1; #endif /* SYS_getrandom */ #endif /* __linux__ */ @@ -174,22 +121,21 @@ int mbedtls_platform_entropy_poll( void *data, { FILE *file; size_t read_len; + int ret; ((void) data); #if defined(HAVE_GETRANDOM) - if( has_getrandom == -1 ) - has_getrandom = ( check_version_3_17_plus() == 0 ); - - if( has_getrandom ) + ret = getrandom_wrapper( output, len, 0 ); + if( ret >= 0 ) { - int ret; - - if( ( ret = getrandom_wrapper( output, len, 0 ) ) < 0 ) - return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED ); - *olen = ret; return( 0 ); } + else if( errno != ENOSYS ) + return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED ); + /* Fall through if the system call isn't known. */ +#else + ((void) ret); #endif /* HAVE_GETRANDOM */ *olen = 0; diff --git a/thirdparty/mbedtls/library/error.c b/thirdparty/mbedtls/library/error.c index 774244b454..12312a0562 100644 --- a/thirdparty/mbedtls/library/error.c +++ b/thirdparty/mbedtls/library/error.c @@ -165,6 +165,10 @@ #include "mbedtls/pkcs5.h" #endif +#if defined(MBEDTLS_PLATFORM_C) +#include "mbedtls/platform.h" +#endif + #if defined(MBEDTLS_POLY1305_C) #include "mbedtls/poly1305.h" #endif @@ -289,6 +293,8 @@ void mbedtls_strerror( int ret, char *buf, size_t buflen ) mbedtls_snprintf( buf, buflen, "ECP - The buffer contains a valid signature followed by more data" ); if( use_ret == -(MBEDTLS_ERR_ECP_HW_ACCEL_FAILED) ) mbedtls_snprintf( buf, buflen, "ECP - The ECP hardware accelerator failed" ); + if( use_ret == -(MBEDTLS_ERR_ECP_IN_PROGRESS) ) + mbedtls_snprintf( buf, buflen, "ECP - Operation in progress, call again with the same parameters to continue" ); #endif /* MBEDTLS_ECP_C */ #if defined(MBEDTLS_MD_C) @@ -515,6 +521,10 @@ void mbedtls_strerror( int ret, char *buf, size_t buflen ) mbedtls_snprintf( buf, buflen, "SSL - Internal-only message signaling that further message-processing should be done" ); if( use_ret == -(MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS) ) mbedtls_snprintf( buf, buflen, "SSL - The asynchronous operation is not completed yet" ); + if( use_ret == -(MBEDTLS_ERR_SSL_EARLY_MESSAGE) ) + mbedtls_snprintf( buf, buflen, "SSL - Internal-only message signaling that a message arrived early" ); + if( use_ret == -(MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) ) + mbedtls_snprintf( buf, buflen, "SSL - A cryptographic operation is in progress. Try again later" ); #endif /* MBEDTLS_SSL_TLS_C */ #if defined(MBEDTLS_X509_USE_C) || defined(MBEDTLS_X509_CREATE_C) @@ -608,8 +618,8 @@ void mbedtls_strerror( int ret, char *buf, size_t buflen ) #endif /* MBEDTLS_ARC4_C */ #if defined(MBEDTLS_ARIA_C) - if( use_ret == -(MBEDTLS_ERR_ARIA_INVALID_KEY_LENGTH) ) - mbedtls_snprintf( buf, buflen, "ARIA - Invalid key length" ); + if( use_ret == -(MBEDTLS_ERR_ARIA_BAD_INPUT_DATA) ) + mbedtls_snprintf( buf, buflen, "ARIA - Bad input data" ); if( use_ret == -(MBEDTLS_ERR_ARIA_INVALID_INPUT_LENGTH) ) mbedtls_snprintf( buf, buflen, "ARIA - Invalid data input length" ); if( use_ret == -(MBEDTLS_ERR_ARIA_FEATURE_UNAVAILABLE) ) @@ -662,17 +672,17 @@ void mbedtls_strerror( int ret, char *buf, size_t buflen ) #endif /* MBEDTLS_BIGNUM_C */ #if defined(MBEDTLS_BLOWFISH_C) - if( use_ret == -(MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH) ) - mbedtls_snprintf( buf, buflen, "BLOWFISH - Invalid key length" ); - if( use_ret == -(MBEDTLS_ERR_BLOWFISH_HW_ACCEL_FAILED) ) - mbedtls_snprintf( buf, buflen, "BLOWFISH - Blowfish hardware accelerator failed" ); + if( use_ret == -(MBEDTLS_ERR_BLOWFISH_BAD_INPUT_DATA) ) + mbedtls_snprintf( buf, buflen, "BLOWFISH - Bad input data" ); if( use_ret == -(MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH) ) mbedtls_snprintf( buf, buflen, "BLOWFISH - Invalid data input length" ); + if( use_ret == -(MBEDTLS_ERR_BLOWFISH_HW_ACCEL_FAILED) ) + mbedtls_snprintf( buf, buflen, "BLOWFISH - Blowfish hardware accelerator failed" ); #endif /* MBEDTLS_BLOWFISH_C */ #if defined(MBEDTLS_CAMELLIA_C) - if( use_ret == -(MBEDTLS_ERR_CAMELLIA_INVALID_KEY_LENGTH) ) - mbedtls_snprintf( buf, buflen, "CAMELLIA - Invalid key length" ); + if( use_ret == -(MBEDTLS_ERR_CAMELLIA_BAD_INPUT_DATA) ) + mbedtls_snprintf( buf, buflen, "CAMELLIA - Bad input data" ); if( use_ret == -(MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH) ) mbedtls_snprintf( buf, buflen, "CAMELLIA - Invalid data input length" ); if( use_ret == -(MBEDTLS_ERR_CAMELLIA_HW_ACCEL_FAILED) ) @@ -821,6 +831,13 @@ void mbedtls_strerror( int ret, char *buf, size_t buflen ) mbedtls_snprintf( buf, buflen, "PADLOCK - Input data should be aligned" ); #endif /* MBEDTLS_PADLOCK_C */ +#if defined(MBEDTLS_PLATFORM_C) + if( use_ret == -(MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED) ) + mbedtls_snprintf( buf, buflen, "PLATFORM - Hardware accelerator failed" ); + if( use_ret == -(MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED) ) + mbedtls_snprintf( buf, buflen, "PLATFORM - The requested feature is not supported by the platform" ); +#endif /* MBEDTLS_PLATFORM_C */ + #if defined(MBEDTLS_POLY1305_C) if( use_ret == -(MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA) ) mbedtls_snprintf( buf, buflen, "POLY1305 - Invalid input parameter(s)" ); @@ -838,16 +855,22 @@ void mbedtls_strerror( int ret, char *buf, size_t buflen ) #if defined(MBEDTLS_SHA1_C) if( use_ret == -(MBEDTLS_ERR_SHA1_HW_ACCEL_FAILED) ) mbedtls_snprintf( buf, buflen, "SHA1 - SHA-1 hardware accelerator failed" ); + if( use_ret == -(MBEDTLS_ERR_SHA1_BAD_INPUT_DATA) ) + mbedtls_snprintf( buf, buflen, "SHA1 - SHA-1 input data was malformed" ); #endif /* MBEDTLS_SHA1_C */ #if defined(MBEDTLS_SHA256_C) if( use_ret == -(MBEDTLS_ERR_SHA256_HW_ACCEL_FAILED) ) mbedtls_snprintf( buf, buflen, "SHA256 - SHA-256 hardware accelerator failed" ); + if( use_ret == -(MBEDTLS_ERR_SHA256_BAD_INPUT_DATA) ) + mbedtls_snprintf( buf, buflen, "SHA256 - SHA-256 input data was malformed" ); #endif /* MBEDTLS_SHA256_C */ #if defined(MBEDTLS_SHA512_C) if( use_ret == -(MBEDTLS_ERR_SHA512_HW_ACCEL_FAILED) ) mbedtls_snprintf( buf, buflen, "SHA512 - SHA-512 hardware accelerator failed" ); + if( use_ret == -(MBEDTLS_ERR_SHA512_BAD_INPUT_DATA) ) + mbedtls_snprintf( buf, buflen, "SHA512 - SHA-512 input data was malformed" ); #endif /* MBEDTLS_SHA512_C */ #if defined(MBEDTLS_THREADING_C) diff --git a/thirdparty/mbedtls/library/gcm.c b/thirdparty/mbedtls/library/gcm.c index 57b027933d..675926a518 100644 --- a/thirdparty/mbedtls/library/gcm.c +++ b/thirdparty/mbedtls/library/gcm.c @@ -48,9 +48,8 @@ #if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C) #include "mbedtls/aes.h" -#if defined(MBEDTLS_PLATFORM_C) #include "mbedtls/platform.h" -#else +#if !defined(MBEDTLS_PLATFORM_C) #include <stdio.h> #define mbedtls_printf printf #endif /* MBEDTLS_PLATFORM_C */ @@ -58,6 +57,12 @@ #if !defined(MBEDTLS_GCM_ALT) +/* Parameter validation macros */ +#define GCM_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_GCM_BAD_INPUT ) +#define GCM_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + /* * 32-bit integer manipulation macros (big endian) */ @@ -86,6 +91,7 @@ */ void mbedtls_gcm_init( mbedtls_gcm_context *ctx ) { + GCM_VALIDATE( ctx != NULL ); memset( ctx, 0, sizeof( mbedtls_gcm_context ) ); } @@ -165,6 +171,10 @@ int mbedtls_gcm_setkey( mbedtls_gcm_context *ctx, int ret; const mbedtls_cipher_info_t *cipher_info; + GCM_VALIDATE_RET( ctx != NULL ); + GCM_VALIDATE_RET( key != NULL ); + GCM_VALIDATE_RET( keybits == 128 || keybits == 192 || keybits == 256 ); + cipher_info = mbedtls_cipher_info_from_values( cipher, keybits, MBEDTLS_MODE_ECB ); if( cipher_info == NULL ) return( MBEDTLS_ERR_GCM_BAD_INPUT ); @@ -275,6 +285,10 @@ int mbedtls_gcm_starts( mbedtls_gcm_context *ctx, const unsigned char *p; size_t use_len, olen = 0; + GCM_VALIDATE_RET( ctx != NULL ); + GCM_VALIDATE_RET( iv != NULL ); + GCM_VALIDATE_RET( add_len == 0 || add != NULL ); + /* IV and AD are limited to 2^64 bits, so 2^61 bytes */ /* IV is not allowed to be zero length */ if( iv_len == 0 || @@ -357,6 +371,10 @@ int mbedtls_gcm_update( mbedtls_gcm_context *ctx, unsigned char *out_p = output; size_t use_len, olen = 0; + GCM_VALIDATE_RET( ctx != NULL ); + GCM_VALIDATE_RET( length == 0 || input != NULL ); + GCM_VALIDATE_RET( length == 0 || output != NULL ); + if( output > input && (size_t) ( output - input ) < length ) return( MBEDTLS_ERR_GCM_BAD_INPUT ); @@ -410,8 +428,14 @@ int mbedtls_gcm_finish( mbedtls_gcm_context *ctx, { unsigned char work_buf[16]; size_t i; - uint64_t orig_len = ctx->len * 8; - uint64_t orig_add_len = ctx->add_len * 8; + uint64_t orig_len; + uint64_t orig_add_len; + + GCM_VALIDATE_RET( ctx != NULL ); + GCM_VALIDATE_RET( tag != NULL ); + + orig_len = ctx->len * 8; + orig_add_len = ctx->add_len * 8; if( tag_len > 16 || tag_len < 4 ) return( MBEDTLS_ERR_GCM_BAD_INPUT ); @@ -453,6 +477,13 @@ int mbedtls_gcm_crypt_and_tag( mbedtls_gcm_context *ctx, { int ret; + GCM_VALIDATE_RET( ctx != NULL ); + GCM_VALIDATE_RET( iv != NULL ); + GCM_VALIDATE_RET( add_len == 0 || add != NULL ); + GCM_VALIDATE_RET( length == 0 || input != NULL ); + GCM_VALIDATE_RET( length == 0 || output != NULL ); + GCM_VALIDATE_RET( tag != NULL ); + if( ( ret = mbedtls_gcm_starts( ctx, mode, iv, iv_len, add, add_len ) ) != 0 ) return( ret ); @@ -481,6 +512,13 @@ int mbedtls_gcm_auth_decrypt( mbedtls_gcm_context *ctx, size_t i; int diff; + GCM_VALIDATE_RET( ctx != NULL ); + GCM_VALIDATE_RET( iv != NULL ); + GCM_VALIDATE_RET( add_len == 0 || add != NULL ); + GCM_VALIDATE_RET( tag != NULL ); + GCM_VALIDATE_RET( length == 0 || input != NULL ); + GCM_VALIDATE_RET( length == 0 || output != NULL ); + if( ( ret = mbedtls_gcm_crypt_and_tag( ctx, MBEDTLS_GCM_DECRYPT, length, iv, iv_len, add, add_len, input, output, tag_len, check_tag ) ) != 0 ) @@ -503,6 +541,8 @@ int mbedtls_gcm_auth_decrypt( mbedtls_gcm_context *ctx, void mbedtls_gcm_free( mbedtls_gcm_context *ctx ) { + if( ctx == NULL ) + return; mbedtls_cipher_free( &ctx->cipher_ctx ); mbedtls_platform_zeroize( ctx, sizeof( mbedtls_gcm_context ) ); } @@ -764,7 +804,7 @@ int mbedtls_gcm_self_test( int verbose ) * there is an alternative underlying implementation i.e. when * MBEDTLS_AES_ALT is defined. */ - if( ret == MBEDTLS_ERR_AES_FEATURE_UNAVAILABLE && key_len == 192 ) + if( ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED && key_len == 192 ) { mbedtls_printf( "skipped\n" ); break; diff --git a/thirdparty/mbedtls/library/hmac_drbg.c b/thirdparty/mbedtls/library/hmac_drbg.c index dad55ff861..c50330e7d8 100644 --- a/thirdparty/mbedtls/library/hmac_drbg.c +++ b/thirdparty/mbedtls/library/hmac_drbg.c @@ -66,31 +66,60 @@ void mbedtls_hmac_drbg_init( mbedtls_hmac_drbg_context *ctx ) /* * HMAC_DRBG update, using optional additional data (10.1.2.2) */ -void mbedtls_hmac_drbg_update( mbedtls_hmac_drbg_context *ctx, - const unsigned char *additional, size_t add_len ) +int mbedtls_hmac_drbg_update_ret( mbedtls_hmac_drbg_context *ctx, + const unsigned char *additional, + size_t add_len ) { size_t md_len = mbedtls_md_get_size( ctx->md_ctx.md_info ); unsigned char rounds = ( additional != NULL && add_len != 0 ) ? 2 : 1; unsigned char sep[1]; unsigned char K[MBEDTLS_MD_MAX_SIZE]; + int ret; for( sep[0] = 0; sep[0] < rounds; sep[0]++ ) { /* Step 1 or 4 */ - mbedtls_md_hmac_reset( &ctx->md_ctx ); - mbedtls_md_hmac_update( &ctx->md_ctx, ctx->V, md_len ); - mbedtls_md_hmac_update( &ctx->md_ctx, sep, 1 ); + if( ( ret = mbedtls_md_hmac_reset( &ctx->md_ctx ) ) != 0 ) + goto exit; + if( ( ret = mbedtls_md_hmac_update( &ctx->md_ctx, + ctx->V, md_len ) ) != 0 ) + goto exit; + if( ( ret = mbedtls_md_hmac_update( &ctx->md_ctx, + sep, 1 ) ) != 0 ) + goto exit; if( rounds == 2 ) - mbedtls_md_hmac_update( &ctx->md_ctx, additional, add_len ); - mbedtls_md_hmac_finish( &ctx->md_ctx, K ); + { + if( ( ret = mbedtls_md_hmac_update( &ctx->md_ctx, + additional, add_len ) ) != 0 ) + goto exit; + } + if( ( ret = mbedtls_md_hmac_finish( &ctx->md_ctx, K ) ) != 0 ) + goto exit; /* Step 2 or 5 */ - mbedtls_md_hmac_starts( &ctx->md_ctx, K, md_len ); - mbedtls_md_hmac_update( &ctx->md_ctx, ctx->V, md_len ); - mbedtls_md_hmac_finish( &ctx->md_ctx, ctx->V ); + if( ( ret = mbedtls_md_hmac_starts( &ctx->md_ctx, K, md_len ) ) != 0 ) + goto exit; + if( ( ret = mbedtls_md_hmac_update( &ctx->md_ctx, + ctx->V, md_len ) ) != 0 ) + goto exit; + if( ( ret = mbedtls_md_hmac_finish( &ctx->md_ctx, ctx->V ) ) != 0 ) + goto exit; } + +exit: + mbedtls_platform_zeroize( K, sizeof( K ) ); + return( ret ); } +#if !defined(MBEDTLS_DEPRECATED_REMOVED) +void mbedtls_hmac_drbg_update( mbedtls_hmac_drbg_context *ctx, + const unsigned char *additional, + size_t add_len ) +{ + (void) mbedtls_hmac_drbg_update_ret( ctx, additional, add_len ); +} +#endif /* MBEDTLS_DEPRECATED_REMOVED */ + /* * Simplified HMAC_DRBG initialisation (for use with deterministic ECDSA) */ @@ -108,10 +137,13 @@ int mbedtls_hmac_drbg_seed_buf( mbedtls_hmac_drbg_context *ctx, * Use the V memory location, which is currently all 0, to initialize the * MD context with an all-zero key. Then set V to its initial value. */ - mbedtls_md_hmac_starts( &ctx->md_ctx, ctx->V, mbedtls_md_get_size( md_info ) ); + if( ( ret = mbedtls_md_hmac_starts( &ctx->md_ctx, ctx->V, + mbedtls_md_get_size( md_info ) ) ) != 0 ) + return( ret ); memset( ctx->V, 0x01, mbedtls_md_get_size( md_info ) ); - mbedtls_hmac_drbg_update( ctx, data, data_len ); + if( ( ret = mbedtls_hmac_drbg_update_ret( ctx, data, data_len ) ) != 0 ) + return( ret ); return( 0 ); } @@ -124,6 +156,7 @@ int mbedtls_hmac_drbg_reseed( mbedtls_hmac_drbg_context *ctx, { unsigned char seed[MBEDTLS_HMAC_DRBG_MAX_SEED_INPUT]; size_t seedlen; + int ret; /* III. Check input length */ if( len > MBEDTLS_HMAC_DRBG_MAX_INPUT || @@ -135,7 +168,8 @@ int mbedtls_hmac_drbg_reseed( mbedtls_hmac_drbg_context *ctx, memset( seed, 0, MBEDTLS_HMAC_DRBG_MAX_SEED_INPUT ); /* IV. Gather entropy_len bytes of entropy for the seed */ - if( ctx->f_entropy( ctx->p_entropy, seed, ctx->entropy_len ) != 0 ) + if( ( ret = ctx->f_entropy( ctx->p_entropy, + seed, ctx->entropy_len ) ) != 0 ) return( MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED ); seedlen = ctx->entropy_len; @@ -148,13 +182,16 @@ int mbedtls_hmac_drbg_reseed( mbedtls_hmac_drbg_context *ctx, } /* 2. Update state */ - mbedtls_hmac_drbg_update( ctx, seed, seedlen ); + if( ( ret = mbedtls_hmac_drbg_update_ret( ctx, seed, seedlen ) ) != 0 ) + goto exit; /* 3. Reset reseed_counter */ ctx->reseed_counter = 1; +exit: /* 4. Done */ - return( 0 ); + mbedtls_platform_zeroize( seed, seedlen ); + return( ret ); } /* @@ -180,7 +217,8 @@ int mbedtls_hmac_drbg_seed( mbedtls_hmac_drbg_context *ctx, * Use the V memory location, which is currently all 0, to initialize the * MD context with an all-zero key. Then set V to its initial value. */ - mbedtls_md_hmac_starts( &ctx->md_ctx, ctx->V, md_size ); + if( ( ret = mbedtls_md_hmac_starts( &ctx->md_ctx, ctx->V, md_size ) ) != 0 ) + return( ret ); memset( ctx->V, 0x01, md_size ); ctx->f_entropy = f_entropy; @@ -273,16 +311,24 @@ int mbedtls_hmac_drbg_random_with_add( void *p_rng, /* 2. Use additional data if any */ if( additional != NULL && add_len != 0 ) - mbedtls_hmac_drbg_update( ctx, additional, add_len ); + { + if( ( ret = mbedtls_hmac_drbg_update_ret( ctx, + additional, add_len ) ) != 0 ) + goto exit; + } /* 3, 4, 5. Generate bytes */ while( left != 0 ) { size_t use_len = left > md_len ? md_len : left; - mbedtls_md_hmac_reset( &ctx->md_ctx ); - mbedtls_md_hmac_update( &ctx->md_ctx, ctx->V, md_len ); - mbedtls_md_hmac_finish( &ctx->md_ctx, ctx->V ); + if( ( ret = mbedtls_md_hmac_reset( &ctx->md_ctx ) ) != 0 ) + goto exit; + if( ( ret = mbedtls_md_hmac_update( &ctx->md_ctx, + ctx->V, md_len ) ) != 0 ) + goto exit; + if( ( ret = mbedtls_md_hmac_finish( &ctx->md_ctx, ctx->V ) ) != 0 ) + goto exit; memcpy( out, ctx->V, use_len ); out += use_len; @@ -290,13 +336,16 @@ int mbedtls_hmac_drbg_random_with_add( void *p_rng, } /* 6. Update */ - mbedtls_hmac_drbg_update( ctx, additional, add_len ); + if( ( ret = mbedtls_hmac_drbg_update_ret( ctx, + additional, add_len ) ) != 0 ) + goto exit; /* 7. Update reseed counter */ ctx->reseed_counter++; +exit: /* 8. Done */ - return( 0 ); + return( ret ); } /* @@ -368,35 +417,36 @@ exit: int mbedtls_hmac_drbg_update_seed_file( mbedtls_hmac_drbg_context *ctx, const char *path ) { int ret = 0; - FILE *f; + FILE *f = NULL; size_t n; unsigned char buf[ MBEDTLS_HMAC_DRBG_MAX_INPUT ]; + unsigned char c; if( ( f = fopen( path, "rb" ) ) == NULL ) return( MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR ); - fseek( f, 0, SEEK_END ); - n = (size_t) ftell( f ); - fseek( f, 0, SEEK_SET ); - - if( n > MBEDTLS_HMAC_DRBG_MAX_INPUT ) + n = fread( buf, 1, sizeof( buf ), f ); + if( fread( &c, 1, 1, f ) != 0 ) { - fclose( f ); - return( MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG ); + ret = MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG; + goto exit; } - - if( fread( buf, 1, n, f ) != n ) + if( n == 0 || ferror( f ) ) + { ret = MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR; - else - mbedtls_hmac_drbg_update( ctx, buf, n ); - + goto exit; + } fclose( f ); + f = NULL; - mbedtls_platform_zeroize( buf, sizeof( buf ) ); + ret = mbedtls_hmac_drbg_update_ret( ctx, buf, n ); +exit: + mbedtls_platform_zeroize( buf, sizeof( buf ) ); + if( f != NULL ) + fclose( f ); if( ret != 0 ) return( ret ); - return( mbedtls_hmac_drbg_write_seed_file( ctx, path ) ); } #endif /* MBEDTLS_FS_IO */ diff --git a/thirdparty/mbedtls/library/nist_kw.c b/thirdparty/mbedtls/library/nist_kw.c index 176af9fe08..317a2426ae 100644 --- a/thirdparty/mbedtls/library/nist_kw.c +++ b/thirdparty/mbedtls/library/nist_kw.c @@ -311,7 +311,7 @@ cleanup: } mbedtls_platform_zeroize( inbuff, KW_SEMIBLOCK_LENGTH * 2 ); mbedtls_platform_zeroize( outbuff, KW_SEMIBLOCK_LENGTH * 2 ); - mbedtls_cipher_finish( &ctx->cipher_ctx, NULL, &olen ); + return( ret ); } @@ -528,7 +528,7 @@ cleanup: mbedtls_platform_zeroize( &bad_padding, sizeof( bad_padding) ); mbedtls_platform_zeroize( &diff, sizeof( diff ) ); mbedtls_platform_zeroize( A, sizeof( A ) ); - mbedtls_cipher_finish( &ctx->cipher_ctx, NULL, &olen ); + return( ret ); } diff --git a/thirdparty/mbedtls/library/pem.c b/thirdparty/mbedtls/library/pem.c index 6069a23dec..897c8a0d6f 100644 --- a/thirdparty/mbedtls/library/pem.c +++ b/thirdparty/mbedtls/library/pem.c @@ -423,9 +423,11 @@ int mbedtls_pem_read_buffer( mbedtls_pem_context *ctx, const char *header, const void mbedtls_pem_free( mbedtls_pem_context *ctx ) { - if( ctx->buf != NULL ) + if ( ctx->buf != NULL ) + { mbedtls_platform_zeroize( ctx->buf, ctx->buflen ); - mbedtls_free( ctx->buf ); + mbedtls_free( ctx->buf ); + } mbedtls_free( ctx->info ); mbedtls_platform_zeroize( ctx, sizeof( mbedtls_pem_context ) ); diff --git a/thirdparty/mbedtls/library/pk.c b/thirdparty/mbedtls/library/pk.c index f05b139e3f..bac685dc19 100644 --- a/thirdparty/mbedtls/library/pk.c +++ b/thirdparty/mbedtls/library/pk.c @@ -44,13 +44,18 @@ #include <limits.h> #include <stdint.h> +/* Parameter validation macros based on platform_util.h */ +#define PK_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_PK_BAD_INPUT_DATA ) +#define PK_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + /* * Initialise a mbedtls_pk_context */ void mbedtls_pk_init( mbedtls_pk_context *ctx ) { - if( ctx == NULL ) - return; + PK_VALIDATE( ctx != NULL ); ctx->pk_info = NULL; ctx->pk_ctx = NULL; @@ -61,14 +66,44 @@ void mbedtls_pk_init( mbedtls_pk_context *ctx ) */ void mbedtls_pk_free( mbedtls_pk_context *ctx ) { - if( ctx == NULL || ctx->pk_info == NULL ) + if( ctx == NULL ) return; - ctx->pk_info->ctx_free_func( ctx->pk_ctx ); + if ( ctx->pk_info != NULL ) + ctx->pk_info->ctx_free_func( ctx->pk_ctx ); mbedtls_platform_zeroize( ctx, sizeof( mbedtls_pk_context ) ); } +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) +/* + * Initialize a restart context + */ +void mbedtls_pk_restart_init( mbedtls_pk_restart_ctx *ctx ) +{ + PK_VALIDATE( ctx != NULL ); + ctx->pk_info = NULL; + ctx->rs_ctx = NULL; +} + +/* + * Free the components of a restart context + */ +void mbedtls_pk_restart_free( mbedtls_pk_restart_ctx *ctx ) +{ + if( ctx == NULL || ctx->pk_info == NULL || + ctx->pk_info->rs_free_func == NULL ) + { + return; + } + + ctx->pk_info->rs_free_func( ctx->rs_ctx ); + + ctx->pk_info = NULL; + ctx->rs_ctx = NULL; +} +#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ + /* * Get pk_info structure from type */ @@ -100,7 +135,8 @@ const mbedtls_pk_info_t * mbedtls_pk_info_from_type( mbedtls_pk_type_t pk_type ) */ int mbedtls_pk_setup( mbedtls_pk_context *ctx, const mbedtls_pk_info_t *info ) { - if( ctx == NULL || info == NULL || ctx->pk_info != NULL ) + PK_VALIDATE_RET( ctx != NULL ); + if( info == NULL || ctx->pk_info != NULL ) return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); if( ( ctx->pk_ctx = info->ctx_alloc_func() ) == NULL ) @@ -123,7 +159,8 @@ int mbedtls_pk_setup_rsa_alt( mbedtls_pk_context *ctx, void * key, mbedtls_rsa_alt_context *rsa_alt; const mbedtls_pk_info_t *info = &mbedtls_rsa_alt_info; - if( ctx == NULL || ctx->pk_info != NULL ) + PK_VALIDATE_RET( ctx != NULL ); + if( ctx->pk_info != NULL ) return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); if( ( ctx->pk_ctx = info->ctx_alloc_func() ) == NULL ) @@ -147,7 +184,9 @@ int mbedtls_pk_setup_rsa_alt( mbedtls_pk_context *ctx, void * key, */ int mbedtls_pk_can_do( const mbedtls_pk_context *ctx, mbedtls_pk_type_t type ) { - /* null or NONE context can't do anything */ + /* A context with null pk_info is not set up yet and can't do anything. + * For backward compatibility, also accept NULL instead of a context + * pointer. */ if( ctx == NULL || ctx->pk_info == NULL ) return( 0 ); @@ -171,17 +210,71 @@ static inline int pk_hashlen_helper( mbedtls_md_type_t md_alg, size_t *hash_len return( 0 ); } +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) /* - * Verify a signature + * Helper to set up a restart context if needed */ -int mbedtls_pk_verify( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg, +static int pk_restart_setup( mbedtls_pk_restart_ctx *ctx, + const mbedtls_pk_info_t *info ) +{ + /* Don't do anything if already set up or invalid */ + if( ctx == NULL || ctx->pk_info != NULL ) + return( 0 ); + + /* Should never happen when we're called */ + if( info->rs_alloc_func == NULL || info->rs_free_func == NULL ) + return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); + + if( ( ctx->rs_ctx = info->rs_alloc_func() ) == NULL ) + return( MBEDTLS_ERR_PK_ALLOC_FAILED ); + + ctx->pk_info = info; + + return( 0 ); +} +#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ + +/* + * Verify a signature (restartable) + */ +int mbedtls_pk_verify_restartable( mbedtls_pk_context *ctx, + mbedtls_md_type_t md_alg, const unsigned char *hash, size_t hash_len, - const unsigned char *sig, size_t sig_len ) + const unsigned char *sig, size_t sig_len, + mbedtls_pk_restart_ctx *rs_ctx ) { - if( ctx == NULL || ctx->pk_info == NULL || + PK_VALIDATE_RET( ctx != NULL ); + PK_VALIDATE_RET( ( md_alg == MBEDTLS_MD_NONE && hash_len == 0 ) || + hash != NULL ); + PK_VALIDATE_RET( sig != NULL ); + + if( ctx->pk_info == NULL || pk_hashlen_helper( md_alg, &hash_len ) != 0 ) return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + /* optimization: use non-restartable version if restart disabled */ + if( rs_ctx != NULL && + mbedtls_ecp_restart_is_enabled() && + ctx->pk_info->verify_rs_func != NULL ) + { + int ret; + + if( ( ret = pk_restart_setup( rs_ctx, ctx->pk_info ) ) != 0 ) + return( ret ); + + ret = ctx->pk_info->verify_rs_func( ctx->pk_ctx, + md_alg, hash, hash_len, sig, sig_len, rs_ctx->rs_ctx ); + + if( ret != MBEDTLS_ERR_ECP_IN_PROGRESS ) + mbedtls_pk_restart_free( rs_ctx ); + + return( ret ); + } +#else /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ + (void) rs_ctx; +#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ + if( ctx->pk_info->verify_func == NULL ) return( MBEDTLS_ERR_PK_TYPE_MISMATCH ); @@ -190,6 +283,17 @@ int mbedtls_pk_verify( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg, } /* + * Verify a signature + */ +int mbedtls_pk_verify( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg, + const unsigned char *hash, size_t hash_len, + const unsigned char *sig, size_t sig_len ) +{ + return( mbedtls_pk_verify_restartable( ctx, md_alg, hash, hash_len, + sig, sig_len, NULL ) ); +} + +/* * Verify a signature with options */ int mbedtls_pk_verify_ext( mbedtls_pk_type_t type, const void *options, @@ -197,7 +301,12 @@ int mbedtls_pk_verify_ext( mbedtls_pk_type_t type, const void *options, const unsigned char *hash, size_t hash_len, const unsigned char *sig, size_t sig_len ) { - if( ctx == NULL || ctx->pk_info == NULL ) + PK_VALIDATE_RET( ctx != NULL ); + PK_VALIDATE_RET( ( md_alg == MBEDTLS_MD_NONE && hash_len == 0 ) || + hash != NULL ); + PK_VALIDATE_RET( sig != NULL ); + + if( ctx->pk_info == NULL ) return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); if( ! mbedtls_pk_can_do( ctx, type ) ) @@ -248,17 +357,47 @@ int mbedtls_pk_verify_ext( mbedtls_pk_type_t type, const void *options, } /* - * Make a signature + * Make a signature (restartable) */ -int mbedtls_pk_sign( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg, +int mbedtls_pk_sign_restartable( mbedtls_pk_context *ctx, + mbedtls_md_type_t md_alg, const unsigned char *hash, size_t hash_len, unsigned char *sig, size_t *sig_len, - int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) + int (*f_rng)(void *, unsigned char *, size_t), void *p_rng, + mbedtls_pk_restart_ctx *rs_ctx ) { - if( ctx == NULL || ctx->pk_info == NULL || + PK_VALIDATE_RET( ctx != NULL ); + PK_VALIDATE_RET( ( md_alg == MBEDTLS_MD_NONE && hash_len == 0 ) || + hash != NULL ); + PK_VALIDATE_RET( sig != NULL ); + + if( ctx->pk_info == NULL || pk_hashlen_helper( md_alg, &hash_len ) != 0 ) return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + /* optimization: use non-restartable version if restart disabled */ + if( rs_ctx != NULL && + mbedtls_ecp_restart_is_enabled() && + ctx->pk_info->sign_rs_func != NULL ) + { + int ret; + + if( ( ret = pk_restart_setup( rs_ctx, ctx->pk_info ) ) != 0 ) + return( ret ); + + ret = ctx->pk_info->sign_rs_func( ctx->pk_ctx, md_alg, + hash, hash_len, sig, sig_len, f_rng, p_rng, rs_ctx->rs_ctx ); + + if( ret != MBEDTLS_ERR_ECP_IN_PROGRESS ) + mbedtls_pk_restart_free( rs_ctx ); + + return( ret ); + } +#else /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ + (void) rs_ctx; +#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ + if( ctx->pk_info->sign_func == NULL ) return( MBEDTLS_ERR_PK_TYPE_MISMATCH ); @@ -267,6 +406,18 @@ int mbedtls_pk_sign( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg, } /* + * Make a signature + */ +int mbedtls_pk_sign( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg, + const unsigned char *hash, size_t hash_len, + unsigned char *sig, size_t *sig_len, + int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) +{ + return( mbedtls_pk_sign_restartable( ctx, md_alg, hash, hash_len, + sig, sig_len, f_rng, p_rng, NULL ) ); +} + +/* * Decrypt message */ int mbedtls_pk_decrypt( mbedtls_pk_context *ctx, @@ -274,7 +425,12 @@ int mbedtls_pk_decrypt( mbedtls_pk_context *ctx, unsigned char *output, size_t *olen, size_t osize, int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) { - if( ctx == NULL || ctx->pk_info == NULL ) + PK_VALIDATE_RET( ctx != NULL ); + PK_VALIDATE_RET( input != NULL || ilen == 0 ); + PK_VALIDATE_RET( output != NULL || osize == 0 ); + PK_VALIDATE_RET( olen != NULL ); + + if( ctx->pk_info == NULL ) return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); if( ctx->pk_info->decrypt_func == NULL ) @@ -292,7 +448,12 @@ int mbedtls_pk_encrypt( mbedtls_pk_context *ctx, unsigned char *output, size_t *olen, size_t osize, int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) { - if( ctx == NULL || ctx->pk_info == NULL ) + PK_VALIDATE_RET( ctx != NULL ); + PK_VALIDATE_RET( input != NULL || ilen == 0 ); + PK_VALIDATE_RET( output != NULL || osize == 0 ); + PK_VALIDATE_RET( olen != NULL ); + + if( ctx->pk_info == NULL ) return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); if( ctx->pk_info->encrypt_func == NULL ) @@ -307,8 +468,11 @@ int mbedtls_pk_encrypt( mbedtls_pk_context *ctx, */ int mbedtls_pk_check_pair( const mbedtls_pk_context *pub, const mbedtls_pk_context *prv ) { - if( pub == NULL || pub->pk_info == NULL || - prv == NULL || prv->pk_info == NULL || + PK_VALIDATE_RET( pub != NULL ); + PK_VALIDATE_RET( prv != NULL ); + + if( pub->pk_info == NULL || + prv->pk_info == NULL || prv->pk_info->check_pair_func == NULL ) { return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); @@ -333,6 +497,8 @@ int mbedtls_pk_check_pair( const mbedtls_pk_context *pub, const mbedtls_pk_conte */ size_t mbedtls_pk_get_bitlen( const mbedtls_pk_context *ctx ) { + /* For backward compatibility, accept NULL or a context that + * isn't set up yet, and return a fake value that should be safe. */ if( ctx == NULL || ctx->pk_info == NULL ) return( 0 ); @@ -344,7 +510,8 @@ size_t mbedtls_pk_get_bitlen( const mbedtls_pk_context *ctx ) */ int mbedtls_pk_debug( const mbedtls_pk_context *ctx, mbedtls_pk_debug_item *items ) { - if( ctx == NULL || ctx->pk_info == NULL ) + PK_VALIDATE_RET( ctx != NULL ); + if( ctx->pk_info == NULL ) return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); if( ctx->pk_info->debug_func == NULL ) diff --git a/thirdparty/mbedtls/library/pk_wrap.c b/thirdparty/mbedtls/library/pk_wrap.c index 2c7d2d79b8..87806be337 100644 --- a/thirdparty/mbedtls/library/pk_wrap.c +++ b/thirdparty/mbedtls/library/pk_wrap.c @@ -190,11 +190,19 @@ const mbedtls_pk_info_t mbedtls_rsa_info = { rsa_can_do, rsa_verify_wrap, rsa_sign_wrap, +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + NULL, + NULL, +#endif rsa_decrypt_wrap, rsa_encrypt_wrap, rsa_check_pair_wrap, rsa_alloc_wrap, rsa_free_wrap, +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + NULL, + NULL, +#endif rsa_debug, }; #endif /* MBEDTLS_RSA_C */ @@ -262,6 +270,110 @@ static int eckey_sign_wrap( void *ctx, mbedtls_md_type_t md_alg, return( ret ); } +#if defined(MBEDTLS_ECP_RESTARTABLE) +/* Forward declarations */ +static int ecdsa_verify_rs_wrap( void *ctx, mbedtls_md_type_t md_alg, + const unsigned char *hash, size_t hash_len, + const unsigned char *sig, size_t sig_len, + void *rs_ctx ); + +static int ecdsa_sign_rs_wrap( void *ctx, mbedtls_md_type_t md_alg, + const unsigned char *hash, size_t hash_len, + unsigned char *sig, size_t *sig_len, + int (*f_rng)(void *, unsigned char *, size_t), void *p_rng, + void *rs_ctx ); + +/* + * Restart context for ECDSA operations with ECKEY context + * + * We need to store an actual ECDSA context, as we need to pass the same to + * the underlying ecdsa function, so we can't create it on the fly every time. + */ +typedef struct +{ + mbedtls_ecdsa_restart_ctx ecdsa_rs; + mbedtls_ecdsa_context ecdsa_ctx; +} eckey_restart_ctx; + +static void *eckey_rs_alloc( void ) +{ + eckey_restart_ctx *rs_ctx; + + void *ctx = mbedtls_calloc( 1, sizeof( eckey_restart_ctx ) ); + + if( ctx != NULL ) + { + rs_ctx = ctx; + mbedtls_ecdsa_restart_init( &rs_ctx->ecdsa_rs ); + mbedtls_ecdsa_init( &rs_ctx->ecdsa_ctx ); + } + + return( ctx ); +} + +static void eckey_rs_free( void *ctx ) +{ + eckey_restart_ctx *rs_ctx; + + if( ctx == NULL) + return; + + rs_ctx = ctx; + mbedtls_ecdsa_restart_free( &rs_ctx->ecdsa_rs ); + mbedtls_ecdsa_free( &rs_ctx->ecdsa_ctx ); + + mbedtls_free( ctx ); +} + +static int eckey_verify_rs_wrap( void *ctx, mbedtls_md_type_t md_alg, + const unsigned char *hash, size_t hash_len, + const unsigned char *sig, size_t sig_len, + void *rs_ctx ) +{ + int ret; + eckey_restart_ctx *rs = rs_ctx; + + /* Should never happen */ + if( rs == NULL ) + return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); + + /* set up our own sub-context if needed (that is, on first run) */ + if( rs->ecdsa_ctx.grp.pbits == 0 ) + MBEDTLS_MPI_CHK( mbedtls_ecdsa_from_keypair( &rs->ecdsa_ctx, ctx ) ); + + MBEDTLS_MPI_CHK( ecdsa_verify_rs_wrap( &rs->ecdsa_ctx, + md_alg, hash, hash_len, + sig, sig_len, &rs->ecdsa_rs ) ); + +cleanup: + return( ret ); +} + +static int eckey_sign_rs_wrap( void *ctx, mbedtls_md_type_t md_alg, + const unsigned char *hash, size_t hash_len, + unsigned char *sig, size_t *sig_len, + int (*f_rng)(void *, unsigned char *, size_t), void *p_rng, + void *rs_ctx ) +{ + int ret; + eckey_restart_ctx *rs = rs_ctx; + + /* Should never happen */ + if( rs == NULL ) + return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); + + /* set up our own sub-context if needed (that is, on first run) */ + if( rs->ecdsa_ctx.grp.pbits == 0 ) + MBEDTLS_MPI_CHK( mbedtls_ecdsa_from_keypair( &rs->ecdsa_ctx, ctx ) ); + + MBEDTLS_MPI_CHK( ecdsa_sign_rs_wrap( &rs->ecdsa_ctx, md_alg, + hash, hash_len, sig, sig_len, + f_rng, p_rng, &rs->ecdsa_rs ) ); + +cleanup: + return( ret ); +} +#endif /* MBEDTLS_ECP_RESTARTABLE */ #endif /* MBEDTLS_ECDSA_C */ static int eckey_check_pair( const void *pub, const void *prv ) @@ -301,15 +413,23 @@ const mbedtls_pk_info_t mbedtls_eckey_info = { #if defined(MBEDTLS_ECDSA_C) eckey_verify_wrap, eckey_sign_wrap, -#else +#if defined(MBEDTLS_ECP_RESTARTABLE) + eckey_verify_rs_wrap, + eckey_sign_rs_wrap, +#endif +#else /* MBEDTLS_ECDSA_C */ NULL, NULL, -#endif +#endif /* MBEDTLS_ECDSA_C */ NULL, NULL, eckey_check_pair, eckey_alloc_wrap, eckey_free_wrap, +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + eckey_rs_alloc, + eckey_rs_free, +#endif eckey_debug, }; @@ -329,11 +449,19 @@ const mbedtls_pk_info_t mbedtls_eckeydh_info = { eckeydh_can_do, NULL, NULL, +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + NULL, + NULL, +#endif NULL, NULL, eckey_check_pair, eckey_alloc_wrap, /* Same underlying key structure */ eckey_free_wrap, /* Same underlying key structure */ +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + NULL, + NULL, +#endif eckey_debug, /* Same underlying key structure */ }; #endif /* MBEDTLS_ECP_C */ @@ -369,6 +497,40 @@ static int ecdsa_sign_wrap( void *ctx, mbedtls_md_type_t md_alg, md_alg, hash, hash_len, sig, sig_len, f_rng, p_rng ) ); } +#if defined(MBEDTLS_ECP_RESTARTABLE) +static int ecdsa_verify_rs_wrap( void *ctx, mbedtls_md_type_t md_alg, + const unsigned char *hash, size_t hash_len, + const unsigned char *sig, size_t sig_len, + void *rs_ctx ) +{ + int ret; + ((void) md_alg); + + ret = mbedtls_ecdsa_read_signature_restartable( + (mbedtls_ecdsa_context *) ctx, + hash, hash_len, sig, sig_len, + (mbedtls_ecdsa_restart_ctx *) rs_ctx ); + + if( ret == MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH ) + return( MBEDTLS_ERR_PK_SIG_LEN_MISMATCH ); + + return( ret ); +} + +static int ecdsa_sign_rs_wrap( void *ctx, mbedtls_md_type_t md_alg, + const unsigned char *hash, size_t hash_len, + unsigned char *sig, size_t *sig_len, + int (*f_rng)(void *, unsigned char *, size_t), void *p_rng, + void *rs_ctx ) +{ + return( mbedtls_ecdsa_write_signature_restartable( + (mbedtls_ecdsa_context *) ctx, + md_alg, hash, hash_len, sig, sig_len, f_rng, p_rng, + (mbedtls_ecdsa_restart_ctx *) rs_ctx ) ); + +} +#endif /* MBEDTLS_ECP_RESTARTABLE */ + static void *ecdsa_alloc_wrap( void ) { void *ctx = mbedtls_calloc( 1, sizeof( mbedtls_ecdsa_context ) ); @@ -385,6 +547,24 @@ static void ecdsa_free_wrap( void *ctx ) mbedtls_free( ctx ); } +#if defined(MBEDTLS_ECP_RESTARTABLE) +static void *ecdsa_rs_alloc( void ) +{ + void *ctx = mbedtls_calloc( 1, sizeof( mbedtls_ecdsa_restart_ctx ) ); + + if( ctx != NULL ) + mbedtls_ecdsa_restart_init( ctx ); + + return( ctx ); +} + +static void ecdsa_rs_free( void *ctx ) +{ + mbedtls_ecdsa_restart_free( ctx ); + mbedtls_free( ctx ); +} +#endif /* MBEDTLS_ECP_RESTARTABLE */ + const mbedtls_pk_info_t mbedtls_ecdsa_info = { MBEDTLS_PK_ECDSA, "ECDSA", @@ -392,11 +572,19 @@ const mbedtls_pk_info_t mbedtls_ecdsa_info = { ecdsa_can_do, ecdsa_verify_wrap, ecdsa_sign_wrap, +#if defined(MBEDTLS_ECP_RESTARTABLE) + ecdsa_verify_rs_wrap, + ecdsa_sign_rs_wrap, +#endif NULL, NULL, eckey_check_pair, /* Compatible key structures */ ecdsa_alloc_wrap, ecdsa_free_wrap, +#if defined(MBEDTLS_ECP_RESTARTABLE) + ecdsa_rs_alloc, + ecdsa_rs_free, +#endif eckey_debug, /* Compatible key structures */ }; #endif /* MBEDTLS_ECDSA_C */ @@ -506,6 +694,10 @@ const mbedtls_pk_info_t mbedtls_rsa_alt_info = { rsa_alt_can_do, NULL, rsa_alt_sign_wrap, +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + NULL, + NULL, +#endif rsa_alt_decrypt_wrap, NULL, #if defined(MBEDTLS_RSA_C) @@ -515,6 +707,10 @@ const mbedtls_pk_info_t mbedtls_rsa_alt_info = { #endif rsa_alt_alloc_wrap, rsa_alt_free_wrap, +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + NULL, + NULL, +#endif NULL, }; diff --git a/thirdparty/mbedtls/library/pkcs12.c b/thirdparty/mbedtls/library/pkcs12.c index 16a15cb63e..7edf064c13 100644 --- a/thirdparty/mbedtls/library/pkcs12.c +++ b/thirdparty/mbedtls/library/pkcs12.c @@ -48,6 +48,8 @@ #include "mbedtls/des.h" #endif +#if defined(MBEDTLS_ASN1_PARSE_C) + static int pkcs12_parse_pbe_params( mbedtls_asn1_buf *params, mbedtls_asn1_buf *salt, int *iterations ) { @@ -226,6 +228,8 @@ exit: return( ret ); } +#endif /* MBEDTLS_ASN1_PARSE_C */ + static void pkcs12_fill_buffer( unsigned char *data, size_t data_len, const unsigned char *filler, size_t fill_len ) { diff --git a/thirdparty/mbedtls/library/pkcs5.c b/thirdparty/mbedtls/library/pkcs5.c index f04f0ab25e..50133435ce 100644 --- a/thirdparty/mbedtls/library/pkcs5.c +++ b/thirdparty/mbedtls/library/pkcs5.c @@ -54,22 +54,7 @@ #define mbedtls_printf printf #endif -#if !defined(MBEDTLS_ASN1_PARSE_C) -int mbedtls_pkcs5_pbes2( const mbedtls_asn1_buf *pbe_params, int mode, - const unsigned char *pwd, size_t pwdlen, - const unsigned char *data, size_t datalen, - unsigned char *output ) -{ - ((void) pbe_params); - ((void) mode); - ((void) pwd); - ((void) pwdlen); - ((void) data); - ((void) datalen); - ((void) output); - return( MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE ); -} -#else +#if defined(MBEDTLS_ASN1_PARSE_C) static int pkcs5_parse_pbkdf2_params( const mbedtls_asn1_buf *params, mbedtls_asn1_buf *salt, int *iterations, int *keylen, mbedtls_md_type_t *md_type ) diff --git a/thirdparty/mbedtls/library/pkparse.c b/thirdparty/mbedtls/library/pkparse.c index d6ac987e23..ae210bca6a 100644 --- a/thirdparty/mbedtls/library/pkparse.c +++ b/thirdparty/mbedtls/library/pkparse.c @@ -61,6 +61,12 @@ #define mbedtls_free free #endif +/* Parameter validation macros based on platform_util.h */ +#define PK_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_PK_BAD_INPUT_DATA ) +#define PK_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + #if defined(MBEDTLS_FS_IO) /* * Load all data from a file into a given buffer. @@ -74,6 +80,10 @@ int mbedtls_pk_load_file( const char *path, unsigned char **buf, size_t *n ) FILE *f; long size; + PK_VALIDATE_RET( path != NULL ); + PK_VALIDATE_RET( buf != NULL ); + PK_VALIDATE_RET( n != NULL ); + if( ( f = fopen( path, "rb" ) ) == NULL ) return( MBEDTLS_ERR_PK_FILE_IO_ERROR ); @@ -124,6 +134,9 @@ int mbedtls_pk_parse_keyfile( mbedtls_pk_context *ctx, size_t n; unsigned char *buf; + PK_VALIDATE_RET( ctx != NULL ); + PK_VALIDATE_RET( path != NULL ); + if( ( ret = mbedtls_pk_load_file( path, &buf, &n ) ) != 0 ) return( ret ); @@ -148,6 +161,9 @@ int mbedtls_pk_parse_public_keyfile( mbedtls_pk_context *ctx, const char *path ) size_t n; unsigned char *buf; + PK_VALIDATE_RET( ctx != NULL ); + PK_VALIDATE_RET( path != NULL ); + if( ( ret = mbedtls_pk_load_file( path, &buf, &n ) ) != 0 ) return( ret ); @@ -605,6 +621,11 @@ int mbedtls_pk_parse_subpubkey( unsigned char **p, const unsigned char *end, mbedtls_pk_type_t pk_alg = MBEDTLS_PK_NONE; const mbedtls_pk_info_t *pk_info; + PK_VALIDATE_RET( p != NULL ); + PK_VALIDATE_RET( *p != NULL ); + PK_VALIDATE_RET( end != NULL ); + PK_VALIDATE_RET( pk != NULL ); + if( ( ret = mbedtls_asn1_get_tag( p, end, &len, MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 ) { @@ -1145,16 +1166,22 @@ int mbedtls_pk_parse_key( mbedtls_pk_context *pk, { int ret; const mbedtls_pk_info_t *pk_info; - #if defined(MBEDTLS_PEM_PARSE_C) size_t len; mbedtls_pem_context pem; +#endif - mbedtls_pem_init( &pem ); + PK_VALIDATE_RET( pk != NULL ); + if( keylen == 0 ) + return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT ); + PK_VALIDATE_RET( key != NULL ); + +#if defined(MBEDTLS_PEM_PARSE_C) + mbedtls_pem_init( &pem ); #if defined(MBEDTLS_RSA_C) /* Avoid calling mbedtls_pem_read_buffer() on non-null-terminated string */ - if( keylen == 0 || key[keylen - 1] != '\0' ) + if( key[keylen - 1] != '\0' ) ret = MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT; else ret = mbedtls_pem_read_buffer( &pem, @@ -1185,7 +1212,7 @@ int mbedtls_pk_parse_key( mbedtls_pk_context *pk, #if defined(MBEDTLS_ECP_C) /* Avoid calling mbedtls_pem_read_buffer() on non-null-terminated string */ - if( keylen == 0 || key[keylen - 1] != '\0' ) + if( key[keylen - 1] != '\0' ) ret = MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT; else ret = mbedtls_pem_read_buffer( &pem, @@ -1215,7 +1242,7 @@ int mbedtls_pk_parse_key( mbedtls_pk_context *pk, #endif /* MBEDTLS_ECP_C */ /* Avoid calling mbedtls_pem_read_buffer() on non-null-terminated string */ - if( keylen == 0 || key[keylen - 1] != '\0' ) + if( key[keylen - 1] != '\0' ) ret = MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT; else ret = mbedtls_pem_read_buffer( &pem, @@ -1238,7 +1265,7 @@ int mbedtls_pk_parse_key( mbedtls_pk_context *pk, #if defined(MBEDTLS_PKCS12_C) || defined(MBEDTLS_PKCS5_C) /* Avoid calling mbedtls_pem_read_buffer() on non-null-terminated string */ - if( keylen == 0 || key[keylen - 1] != '\0' ) + if( key[keylen - 1] != '\0' ) ret = MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT; else ret = mbedtls_pem_read_buffer( &pem, @@ -1276,9 +1303,6 @@ int mbedtls_pk_parse_key( mbedtls_pk_context *pk, { unsigned char *key_copy; - if( keylen == 0 ) - return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT ); - if( ( key_copy = mbedtls_calloc( 1, keylen ) ) == NULL ) return( MBEDTLS_ERR_PK_ALLOC_FAILED ); @@ -1295,6 +1319,7 @@ int mbedtls_pk_parse_key( mbedtls_pk_context *pk, return( 0 ); mbedtls_pk_free( pk ); + mbedtls_pk_init( pk ); if( ret == MBEDTLS_ERR_PK_PASSWORD_MISMATCH ) { @@ -1306,39 +1331,42 @@ int mbedtls_pk_parse_key( mbedtls_pk_context *pk, return( 0 ); mbedtls_pk_free( pk ); + mbedtls_pk_init( pk ); #if defined(MBEDTLS_RSA_C) pk_info = mbedtls_pk_info_from_type( MBEDTLS_PK_RSA ); - if( ( ret = mbedtls_pk_setup( pk, pk_info ) ) != 0 || - ( ret = pk_parse_key_pkcs1_der( mbedtls_pk_rsa( *pk ), - key, keylen ) ) != 0 ) - { - mbedtls_pk_free( pk ); - } - else + if( mbedtls_pk_setup( pk, pk_info ) == 0 && + pk_parse_key_pkcs1_der( mbedtls_pk_rsa( *pk ), key, keylen ) == 0 ) { return( 0 ); } + mbedtls_pk_free( pk ); + mbedtls_pk_init( pk ); #endif /* MBEDTLS_RSA_C */ #if defined(MBEDTLS_ECP_C) - pk_info = mbedtls_pk_info_from_type( MBEDTLS_PK_ECKEY ); - if( ( ret = mbedtls_pk_setup( pk, pk_info ) ) != 0 || - ( ret = pk_parse_key_sec1_der( mbedtls_pk_ec( *pk ), - key, keylen ) ) != 0 ) - { - mbedtls_pk_free( pk ); - } - else + if( mbedtls_pk_setup( pk, pk_info ) == 0 && + pk_parse_key_sec1_der( mbedtls_pk_ec( *pk ), + key, keylen ) == 0 ) { return( 0 ); } - + mbedtls_pk_free( pk ); #endif /* MBEDTLS_ECP_C */ + /* If MBEDTLS_RSA_C is defined but MBEDTLS_ECP_C isn't, + * it is ok to leave the PK context initialized but not + * freed: It is the caller's responsibility to call pk_init() + * before calling this function, and to call pk_free() + * when it fails. If MBEDTLS_ECP_C is defined but MBEDTLS_RSA_C + * isn't, this leads to mbedtls_pk_free() being called + * twice, once here and once by the caller, but this is + * also ok and in line with the mbedtls_pk_free() calls + * on failed PEM parsing attempts. */ + return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT ); } @@ -1356,11 +1384,18 @@ int mbedtls_pk_parse_public_key( mbedtls_pk_context *ctx, #if defined(MBEDTLS_PEM_PARSE_C) size_t len; mbedtls_pem_context pem; +#endif + PK_VALIDATE_RET( ctx != NULL ); + if( keylen == 0 ) + return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT ); + PK_VALIDATE_RET( key != NULL || keylen == 0 ); + +#if defined(MBEDTLS_PEM_PARSE_C) mbedtls_pem_init( &pem ); #if defined(MBEDTLS_RSA_C) /* Avoid calling mbedtls_pem_read_buffer() on non-null-terminated string */ - if( keylen == 0 || key[keylen - 1] != '\0' ) + if( key[keylen - 1] != '\0' ) ret = MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT; else ret = mbedtls_pem_read_buffer( &pem, @@ -1391,7 +1426,7 @@ int mbedtls_pk_parse_public_key( mbedtls_pk_context *ctx, #endif /* MBEDTLS_RSA_C */ /* Avoid calling mbedtls_pem_read_buffer() on non-null-terminated string */ - if( keylen == 0 || key[keylen - 1] != '\0' ) + if( key[keylen - 1] != '\0' ) ret = MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT; else ret = mbedtls_pem_read_buffer( &pem, diff --git a/thirdparty/mbedtls/library/pkwrite.c b/thirdparty/mbedtls/library/pkwrite.c index 8eabd889b5..8d1da2f757 100644 --- a/thirdparty/mbedtls/library/pkwrite.c +++ b/thirdparty/mbedtls/library/pkwrite.c @@ -30,6 +30,7 @@ #include "mbedtls/pk.h" #include "mbedtls/asn1write.h" #include "mbedtls/oid.h" +#include "mbedtls/platform_util.h" #include <string.h> @@ -54,6 +55,12 @@ #define mbedtls_free free #endif +/* Parameter validation macros based on platform_util.h */ +#define PK_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_PK_BAD_INPUT_DATA ) +#define PK_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + #if defined(MBEDTLS_RSA_C) /* * RSAPublicKey ::= SEQUENCE { @@ -151,6 +158,11 @@ int mbedtls_pk_write_pubkey( unsigned char **p, unsigned char *start, int ret; size_t len = 0; + PK_VALIDATE_RET( p != NULL ); + PK_VALIDATE_RET( *p != NULL ); + PK_VALIDATE_RET( start != NULL ); + PK_VALIDATE_RET( key != NULL ); + #if defined(MBEDTLS_RSA_C) if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_RSA ) MBEDTLS_ASN1_CHK_ADD( len, pk_write_rsa_pubkey( p, start, mbedtls_pk_rsa( *key ) ) ); @@ -173,6 +185,11 @@ int mbedtls_pk_write_pubkey_der( mbedtls_pk_context *key, unsigned char *buf, si size_t len = 0, par_len = 0, oid_len; const char *oid; + PK_VALIDATE_RET( key != NULL ); + if( size == 0 ) + return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); + PK_VALIDATE_RET( buf != NULL ); + c = buf + size; MBEDTLS_ASN1_CHK_ADD( len, mbedtls_pk_write_pubkey( &c, buf, key ) ); @@ -217,9 +234,16 @@ int mbedtls_pk_write_pubkey_der( mbedtls_pk_context *key, unsigned char *buf, si int mbedtls_pk_write_key_der( mbedtls_pk_context *key, unsigned char *buf, size_t size ) { int ret; - unsigned char *c = buf + size; + unsigned char *c; size_t len = 0; + PK_VALIDATE_RET( key != NULL ); + if( size == 0 ) + return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); + PK_VALIDATE_RET( buf != NULL ); + + c = buf + size; + #if defined(MBEDTLS_RSA_C) if( mbedtls_pk_get_type( key ) == MBEDTLS_PK_RSA ) { @@ -457,6 +481,9 @@ int mbedtls_pk_write_pubkey_pem( mbedtls_pk_context *key, unsigned char *buf, si unsigned char output_buf[PUB_DER_MAX_BYTES]; size_t olen = 0; + PK_VALIDATE_RET( key != NULL ); + PK_VALIDATE_RET( buf != NULL || size == 0 ); + if( ( ret = mbedtls_pk_write_pubkey_der( key, output_buf, sizeof(output_buf) ) ) < 0 ) { @@ -480,6 +507,9 @@ int mbedtls_pk_write_key_pem( mbedtls_pk_context *key, unsigned char *buf, size_ const char *begin, *end; size_t olen = 0; + PK_VALIDATE_RET( key != NULL ); + PK_VALIDATE_RET( buf != NULL || size == 0 ); + if( ( ret = mbedtls_pk_write_key_der( key, output_buf, sizeof(output_buf) ) ) < 0 ) return( ret ); diff --git a/thirdparty/mbedtls/library/platform.c b/thirdparty/mbedtls/library/platform.c index b24b2fa652..73a6db9ebe 100644 --- a/thirdparty/mbedtls/library/platform.c +++ b/thirdparty/mbedtls/library/platform.c @@ -30,7 +30,14 @@ #include "mbedtls/platform.h" #include "mbedtls/platform_util.h" -#if defined(MBEDTLS_PLATFORM_MEMORY) +/* The compile time configuration of memory allocation via the macros + * MBEDTLS_PLATFORM_{FREE/CALLOC}_MACRO takes precedence over the runtime + * configuration via mbedtls_platform_set_calloc_free(). So, omit everything + * related to the latter if MBEDTLS_PLATFORM_{FREE/CALLOC}_MACRO are defined. */ +#if defined(MBEDTLS_PLATFORM_MEMORY) && \ + !( defined(MBEDTLS_PLATFORM_CALLOC_MACRO) && \ + defined(MBEDTLS_PLATFORM_FREE_MACRO) ) + #if !defined(MBEDTLS_PLATFORM_STD_CALLOC) static void *platform_calloc_uninit( size_t n, size_t size ) { @@ -71,7 +78,9 @@ int mbedtls_platform_set_calloc_free( void * (*calloc_func)( size_t, size_t ), mbedtls_free_func = free_func; return( 0 ); } -#endif /* MBEDTLS_PLATFORM_MEMORY */ +#endif /* MBEDTLS_PLATFORM_MEMORY && + !( defined(MBEDTLS_PLATFORM_CALLOC_MACRO) && + defined(MBEDTLS_PLATFORM_FREE_MACRO) ) */ #if defined(_WIN32) #include <stdarg.h> diff --git a/thirdparty/mbedtls/library/platform_util.c b/thirdparty/mbedtls/library/platform_util.c index 1a57de9393..756e22679a 100644 --- a/thirdparty/mbedtls/library/platform_util.c +++ b/thirdparty/mbedtls/library/platform_util.c @@ -20,6 +20,14 @@ * This file is part of Mbed TLS (https://tls.mbed.org) */ +/* + * Ensure gmtime_r is available even with -std=c99; must be defined before + * config.h, which pulls in glibc's features.h. Harmless on other platforms. + */ +#if !defined(_POSIX_C_SOURCE) +#define _POSIX_C_SOURCE 200112L +#endif + #if !defined(MBEDTLS_CONFIG_FILE) #include "mbedtls/config.h" #else @@ -27,6 +35,8 @@ #endif #include "mbedtls/platform_util.h" +#include "mbedtls/platform.h" +#include "mbedtls/threading.h" #include <stddef.h> #include <string.h> @@ -65,3 +75,62 @@ void mbedtls_platform_zeroize( void *buf, size_t len ) memset_func( buf, 0, len ); } #endif /* MBEDTLS_PLATFORM_ZEROIZE_ALT */ + +#if defined(MBEDTLS_HAVE_TIME_DATE) && !defined(MBEDTLS_PLATFORM_GMTIME_R_ALT) +#include <time.h> +#if !defined(_WIN32) && (defined(unix) || \ + defined(__unix) || defined(__unix__) || (defined(__APPLE__) && \ + defined(__MACH__))) +#include <unistd.h> +#endif /* !_WIN32 && (unix || __unix || __unix__ || + * (__APPLE__ && __MACH__)) */ + +#if !( ( defined(_POSIX_VERSION) && _POSIX_VERSION >= 200809L ) || \ + ( defined(_POSIX_THREAD_SAFE_FUNCTIONS ) && \ + _POSIX_THREAD_SAFE_FUNCTIONS >= 20112L ) ) +/* + * This is a convenience shorthand macro to avoid checking the long + * preprocessor conditions above. Ideally, we could expose this macro in + * platform_util.h and simply use it in platform_util.c, threading.c and + * threading.h. However, this macro is not part of the Mbed TLS public API, so + * we keep it private by only defining it in this file + */ +#if ! ( defined(_WIN32) && !defined(EFIX64) && !defined(EFI32) ) +#define PLATFORM_UTIL_USE_GMTIME +#endif /* ! ( defined(_WIN32) && !defined(EFIX64) && !defined(EFI32) ) */ + +#endif /* !( ( defined(_POSIX_VERSION) && _POSIX_VERSION >= 200809L ) || \ + ( defined(_POSIX_THREAD_SAFE_FUNCTIONS ) && \ + _POSIX_THREAD_SAFE_FUNCTIONS >= 20112L ) ) */ + +struct tm *mbedtls_platform_gmtime_r( const mbedtls_time_t *tt, + struct tm *tm_buf ) +{ +#if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32) + return( ( gmtime_s( tm_buf, tt ) == 0 ) ? tm_buf : NULL ); +#elif !defined(PLATFORM_UTIL_USE_GMTIME) + return( gmtime_r( tt, tm_buf ) ); +#else + struct tm *lt; + +#if defined(MBEDTLS_THREADING_C) + if( mbedtls_mutex_lock( &mbedtls_threading_gmtime_mutex ) != 0 ) + return( NULL ); +#endif /* MBEDTLS_THREADING_C */ + + lt = gmtime( tt ); + + if( lt != NULL ) + { + memcpy( tm_buf, lt, sizeof( struct tm ) ); + } + +#if defined(MBEDTLS_THREADING_C) + if( mbedtls_mutex_unlock( &mbedtls_threading_gmtime_mutex ) != 0 ) + return( NULL ); +#endif /* MBEDTLS_THREADING_C */ + + return( ( lt == NULL ) ? NULL : tm_buf ); +#endif /* _WIN32 && !EFIX64 && !EFI32 */ +} +#endif /* MBEDTLS_HAVE_TIME_DATE && MBEDTLS_PLATFORM_GMTIME_R_ALT */ diff --git a/thirdparty/mbedtls/library/poly1305.c b/thirdparty/mbedtls/library/poly1305.c index e22d3afb68..b274119181 100644 --- a/thirdparty/mbedtls/library/poly1305.c +++ b/thirdparty/mbedtls/library/poly1305.c @@ -49,6 +49,12 @@ #define inline __inline #endif +/* Parameter validation macros */ +#define POLY1305_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA ) +#define POLY1305_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + #define POLY1305_BLOCK_SIZE_BYTES ( 16U ) #define BYTES_TO_U32_LE( data, offset ) \ @@ -276,27 +282,24 @@ static void poly1305_compute_mac( const mbedtls_poly1305_context *ctx, void mbedtls_poly1305_init( mbedtls_poly1305_context *ctx ) { - if( ctx != NULL ) - { - mbedtls_platform_zeroize( ctx, sizeof( mbedtls_poly1305_context ) ); - } + POLY1305_VALIDATE( ctx != NULL ); + + mbedtls_platform_zeroize( ctx, sizeof( mbedtls_poly1305_context ) ); } void mbedtls_poly1305_free( mbedtls_poly1305_context *ctx ) { - if( ctx != NULL ) - { - mbedtls_platform_zeroize( ctx, sizeof( mbedtls_poly1305_context ) ); - } + if( ctx == NULL ) + return; + + mbedtls_platform_zeroize( ctx, sizeof( mbedtls_poly1305_context ) ); } int mbedtls_poly1305_starts( mbedtls_poly1305_context *ctx, const unsigned char key[32] ) { - if( ctx == NULL || key == NULL ) - { - return( MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA ); - } + POLY1305_VALIDATE_RET( ctx != NULL ); + POLY1305_VALIDATE_RET( key != NULL ); /* r &= 0x0ffffffc0ffffffc0ffffffc0fffffff */ ctx->r[0] = BYTES_TO_U32_LE( key, 0 ) & 0x0FFFFFFFU; @@ -331,16 +334,8 @@ int mbedtls_poly1305_update( mbedtls_poly1305_context *ctx, size_t remaining = ilen; size_t queue_free_len; size_t nblocks; - - if( ctx == NULL ) - { - return( MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA ); - } - else if( ( ilen > 0U ) && ( input == NULL ) ) - { - /* input pointer is allowed to be NULL only if ilen == 0 */ - return( MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA ); - } + POLY1305_VALIDATE_RET( ctx != NULL ); + POLY1305_VALIDATE_RET( ilen == 0 || input != NULL ); if( ( remaining > 0U ) && ( ctx->queue_len > 0U ) ) { @@ -398,10 +393,8 @@ int mbedtls_poly1305_update( mbedtls_poly1305_context *ctx, int mbedtls_poly1305_finish( mbedtls_poly1305_context *ctx, unsigned char mac[16] ) { - if( ( ctx == NULL ) || ( mac == NULL ) ) - { - return( MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA ); - } + POLY1305_VALIDATE_RET( ctx != NULL ); + POLY1305_VALIDATE_RET( mac != NULL ); /* Process any leftover data */ if( ctx->queue_len > 0U ) @@ -431,6 +424,9 @@ int mbedtls_poly1305_mac( const unsigned char key[32], { mbedtls_poly1305_context ctx; int ret; + POLY1305_VALIDATE_RET( key != NULL ); + POLY1305_VALIDATE_RET( mac != NULL ); + POLY1305_VALIDATE_RET( ilen == 0 || input != NULL ); mbedtls_poly1305_init( &ctx ); diff --git a/thirdparty/mbedtls/library/rsa.c b/thirdparty/mbedtls/library/rsa.c index 88c1cf1007..af1a878599 100644 --- a/thirdparty/mbedtls/library/rsa.c +++ b/thirdparty/mbedtls/library/rsa.c @@ -71,6 +71,12 @@ #if !defined(MBEDTLS_RSA_ALT) +/* Parameter validation macros */ +#define RSA_VALIDATE_RET( cond ) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_RSA_BAD_INPUT_DATA ) +#define RSA_VALIDATE( cond ) \ + MBEDTLS_INTERNAL_VALIDATE( cond ) + #if defined(MBEDTLS_PKCS1_V15) /* constant-time buffer comparison */ static inline int mbedtls_safer_memcmp( const void *a, const void *b, size_t n ) @@ -93,6 +99,7 @@ int mbedtls_rsa_import( mbedtls_rsa_context *ctx, const mbedtls_mpi *D, const mbedtls_mpi *E ) { int ret; + RSA_VALIDATE_RET( ctx != NULL ); if( ( N != NULL && ( ret = mbedtls_mpi_copy( &ctx->N, N ) ) != 0 ) || ( P != NULL && ( ret = mbedtls_mpi_copy( &ctx->P, P ) ) != 0 ) || @@ -117,6 +124,7 @@ int mbedtls_rsa_import_raw( mbedtls_rsa_context *ctx, unsigned char const *E, size_t E_len ) { int ret = 0; + RSA_VALIDATE_RET( ctx != NULL ); if( N != NULL ) { @@ -240,12 +248,16 @@ static int rsa_check_context( mbedtls_rsa_context const *ctx, int is_priv, int mbedtls_rsa_complete( mbedtls_rsa_context *ctx ) { int ret = 0; + int have_N, have_P, have_Q, have_D, have_E; + int n_missing, pq_missing, d_missing, is_pub, is_priv; + + RSA_VALIDATE_RET( ctx != NULL ); - const int have_N = ( mbedtls_mpi_cmp_int( &ctx->N, 0 ) != 0 ); - const int have_P = ( mbedtls_mpi_cmp_int( &ctx->P, 0 ) != 0 ); - const int have_Q = ( mbedtls_mpi_cmp_int( &ctx->Q, 0 ) != 0 ); - const int have_D = ( mbedtls_mpi_cmp_int( &ctx->D, 0 ) != 0 ); - const int have_E = ( mbedtls_mpi_cmp_int( &ctx->E, 0 ) != 0 ); + have_N = ( mbedtls_mpi_cmp_int( &ctx->N, 0 ) != 0 ); + have_P = ( mbedtls_mpi_cmp_int( &ctx->P, 0 ) != 0 ); + have_Q = ( mbedtls_mpi_cmp_int( &ctx->Q, 0 ) != 0 ); + have_D = ( mbedtls_mpi_cmp_int( &ctx->D, 0 ) != 0 ); + have_E = ( mbedtls_mpi_cmp_int( &ctx->E, 0 ) != 0 ); /* * Check whether provided parameters are enough @@ -257,13 +269,13 @@ int mbedtls_rsa_complete( mbedtls_rsa_context *ctx ) * */ - const int n_missing = have_P && have_Q && have_D && have_E; - const int pq_missing = have_N && !have_P && !have_Q && have_D && have_E; - const int d_missing = have_P && have_Q && !have_D && have_E; - const int is_pub = have_N && !have_P && !have_Q && !have_D && have_E; + n_missing = have_P && have_Q && have_D && have_E; + pq_missing = have_N && !have_P && !have_Q && have_D && have_E; + d_missing = have_P && have_Q && !have_D && have_E; + is_pub = have_N && !have_P && !have_Q && !have_D && have_E; /* These three alternatives are mutually exclusive */ - const int is_priv = n_missing || pq_missing || d_missing; + is_priv = n_missing || pq_missing || d_missing; if( !is_priv && !is_pub ) return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); @@ -336,9 +348,11 @@ int mbedtls_rsa_export_raw( const mbedtls_rsa_context *ctx, unsigned char *E, size_t E_len ) { int ret = 0; + int is_priv; + RSA_VALIDATE_RET( ctx != NULL ); /* Check if key is private or public */ - const int is_priv = + is_priv = mbedtls_mpi_cmp_int( &ctx->N, 0 ) != 0 && mbedtls_mpi_cmp_int( &ctx->P, 0 ) != 0 && mbedtls_mpi_cmp_int( &ctx->Q, 0 ) != 0 && @@ -379,9 +393,11 @@ int mbedtls_rsa_export( const mbedtls_rsa_context *ctx, mbedtls_mpi *D, mbedtls_mpi *E ) { int ret; + int is_priv; + RSA_VALIDATE_RET( ctx != NULL ); /* Check if key is private or public */ - int is_priv = + is_priv = mbedtls_mpi_cmp_int( &ctx->N, 0 ) != 0 && mbedtls_mpi_cmp_int( &ctx->P, 0 ) != 0 && mbedtls_mpi_cmp_int( &ctx->Q, 0 ) != 0 && @@ -421,9 +437,11 @@ int mbedtls_rsa_export_crt( const mbedtls_rsa_context *ctx, mbedtls_mpi *DP, mbedtls_mpi *DQ, mbedtls_mpi *QP ) { int ret; + int is_priv; + RSA_VALIDATE_RET( ctx != NULL ); /* Check if key is private or public */ - int is_priv = + is_priv = mbedtls_mpi_cmp_int( &ctx->N, 0 ) != 0 && mbedtls_mpi_cmp_int( &ctx->P, 0 ) != 0 && mbedtls_mpi_cmp_int( &ctx->Q, 0 ) != 0 && @@ -459,6 +477,10 @@ void mbedtls_rsa_init( mbedtls_rsa_context *ctx, int padding, int hash_id ) { + RSA_VALIDATE( ctx != NULL ); + RSA_VALIDATE( padding == MBEDTLS_RSA_PKCS_V15 || + padding == MBEDTLS_RSA_PKCS_V21 ); + memset( ctx, 0, sizeof( mbedtls_rsa_context ) ); mbedtls_rsa_set_padding( ctx, padding, hash_id ); @@ -471,8 +493,13 @@ void mbedtls_rsa_init( mbedtls_rsa_context *ctx, /* * Set padding for an existing RSA context */ -void mbedtls_rsa_set_padding( mbedtls_rsa_context *ctx, int padding, int hash_id ) +void mbedtls_rsa_set_padding( mbedtls_rsa_context *ctx, int padding, + int hash_id ) { + RSA_VALIDATE( ctx != NULL ); + RSA_VALIDATE( padding == MBEDTLS_RSA_PKCS_V15 || + padding == MBEDTLS_RSA_PKCS_V21 ); + ctx->padding = padding; ctx->hash_id = hash_id; } @@ -502,12 +529,20 @@ int mbedtls_rsa_gen_key( mbedtls_rsa_context *ctx, { int ret; mbedtls_mpi H, G, L; + int prime_quality = 0; + RSA_VALIDATE_RET( ctx != NULL ); + RSA_VALIDATE_RET( f_rng != NULL ); - if( f_rng == NULL || nbits < 128 || exponent < 3 ) + if( nbits < 128 || exponent < 3 || nbits % 2 != 0 ) return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); - if( nbits % 2 ) - return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); + /* + * If the modulus is 1024 bit long or shorter, then the security strength of + * the RSA algorithm is less than or equal to 80 bits and therefore an error + * rate of 2^-80 is sufficient. + */ + if( nbits > 1024 ) + prime_quality = MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR; mbedtls_mpi_init( &H ); mbedtls_mpi_init( &G ); @@ -523,11 +558,11 @@ int mbedtls_rsa_gen_key( mbedtls_rsa_context *ctx, do { - MBEDTLS_MPI_CHK( mbedtls_mpi_gen_prime( &ctx->P, nbits >> 1, 0, - f_rng, p_rng ) ); + MBEDTLS_MPI_CHK( mbedtls_mpi_gen_prime( &ctx->P, nbits >> 1, + prime_quality, f_rng, p_rng ) ); - MBEDTLS_MPI_CHK( mbedtls_mpi_gen_prime( &ctx->Q, nbits >> 1, 0, - f_rng, p_rng ) ); + MBEDTLS_MPI_CHK( mbedtls_mpi_gen_prime( &ctx->Q, nbits >> 1, + prime_quality, f_rng, p_rng ) ); /* make sure the difference between p and q is not too small (FIPS 186-4 §B.3.3 step 5.4) */ MBEDTLS_MPI_CHK( mbedtls_mpi_sub_mpi( &H, &ctx->P, &ctx->Q ) ); @@ -603,6 +638,8 @@ cleanup: */ int mbedtls_rsa_check_pubkey( const mbedtls_rsa_context *ctx ) { + RSA_VALIDATE_RET( ctx != NULL ); + if( rsa_check_context( ctx, 0 /* public */, 0 /* no blinding */ ) != 0 ) return( MBEDTLS_ERR_RSA_KEY_CHECK_FAILED ); @@ -626,6 +663,8 @@ int mbedtls_rsa_check_pubkey( const mbedtls_rsa_context *ctx ) */ int mbedtls_rsa_check_privkey( const mbedtls_rsa_context *ctx ) { + RSA_VALIDATE_RET( ctx != NULL ); + if( mbedtls_rsa_check_pubkey( ctx ) != 0 || rsa_check_context( ctx, 1 /* private */, 1 /* blinding */ ) != 0 ) { @@ -655,6 +694,9 @@ int mbedtls_rsa_check_privkey( const mbedtls_rsa_context *ctx ) int mbedtls_rsa_check_pub_priv( const mbedtls_rsa_context *pub, const mbedtls_rsa_context *prv ) { + RSA_VALIDATE_RET( pub != NULL ); + RSA_VALIDATE_RET( prv != NULL ); + if( mbedtls_rsa_check_pubkey( pub ) != 0 || mbedtls_rsa_check_privkey( prv ) != 0 ) { @@ -680,6 +722,9 @@ int mbedtls_rsa_public( mbedtls_rsa_context *ctx, int ret; size_t olen; mbedtls_mpi T; + RSA_VALIDATE_RET( ctx != NULL ); + RSA_VALIDATE_RET( input != NULL ); + RSA_VALIDATE_RET( output != NULL ); if( rsa_check_context( ctx, 0 /* public */, 0 /* no blinding */ ) ) return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); @@ -822,6 +867,10 @@ int mbedtls_rsa_private( mbedtls_rsa_context *ctx, * checked result; should be the same in the end. */ mbedtls_mpi I, C; + RSA_VALIDATE_RET( ctx != NULL ); + RSA_VALIDATE_RET( input != NULL ); + RSA_VALIDATE_RET( output != NULL ); + if( rsa_check_context( ctx, 1 /* private key checks */, f_rng != NULL /* blinding y/n */ ) != 0 ) { @@ -1082,6 +1131,13 @@ int mbedtls_rsa_rsaes_oaep_encrypt( mbedtls_rsa_context *ctx, const mbedtls_md_info_t *md_info; mbedtls_md_context_t md_ctx; + RSA_VALIDATE_RET( ctx != NULL ); + RSA_VALIDATE_RET( mode == MBEDTLS_RSA_PRIVATE || + mode == MBEDTLS_RSA_PUBLIC ); + RSA_VALIDATE_RET( output != NULL ); + RSA_VALIDATE_RET( input != NULL ); + RSA_VALIDATE_RET( label_len == 0 || label != NULL ); + if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V21 ) return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); @@ -1158,11 +1214,13 @@ int mbedtls_rsa_rsaes_pkcs1_v15_encrypt( mbedtls_rsa_context *ctx, int ret; unsigned char *p = output; - if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V15 ) - return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); + RSA_VALIDATE_RET( ctx != NULL ); + RSA_VALIDATE_RET( mode == MBEDTLS_RSA_PRIVATE || + mode == MBEDTLS_RSA_PUBLIC ); + RSA_VALIDATE_RET( output != NULL ); + RSA_VALIDATE_RET( input != NULL ); - // We don't check p_rng because it won't be dereferenced here - if( f_rng == NULL || input == NULL || output == NULL ) + if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V15 ) return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); olen = ctx->len; @@ -1176,6 +1234,9 @@ int mbedtls_rsa_rsaes_pkcs1_v15_encrypt( mbedtls_rsa_context *ctx, *p++ = 0; if( mode == MBEDTLS_RSA_PUBLIC ) { + if( f_rng == NULL ) + return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); + *p++ = MBEDTLS_RSA_CRYPT; while( nb_pad-- > 0 ) @@ -1220,6 +1281,12 @@ int mbedtls_rsa_pkcs1_encrypt( mbedtls_rsa_context *ctx, const unsigned char *input, unsigned char *output ) { + RSA_VALIDATE_RET( ctx != NULL ); + RSA_VALIDATE_RET( mode == MBEDTLS_RSA_PRIVATE || + mode == MBEDTLS_RSA_PUBLIC ); + RSA_VALIDATE_RET( output != NULL ); + RSA_VALIDATE_RET( input != NULL ); + switch( ctx->padding ) { #if defined(MBEDTLS_PKCS1_V15) @@ -1262,6 +1329,14 @@ int mbedtls_rsa_rsaes_oaep_decrypt( mbedtls_rsa_context *ctx, const mbedtls_md_info_t *md_info; mbedtls_md_context_t md_ctx; + RSA_VALIDATE_RET( ctx != NULL ); + RSA_VALIDATE_RET( mode == MBEDTLS_RSA_PRIVATE || + mode == MBEDTLS_RSA_PUBLIC ); + RSA_VALIDATE_RET( output_max_len == 0 || output != NULL ); + RSA_VALIDATE_RET( label_len == 0 || label != NULL ); + RSA_VALIDATE_RET( input != NULL ); + RSA_VALIDATE_RET( olen != NULL ); + /* * Parameters sanity checks */ @@ -1378,6 +1453,97 @@ cleanup: #endif /* MBEDTLS_PKCS1_V21 */ #if defined(MBEDTLS_PKCS1_V15) +/** Turn zero-or-nonzero into zero-or-all-bits-one, without branches. + * + * \param value The value to analyze. + * \return Zero if \p value is zero, otherwise all-bits-one. + */ +static unsigned all_or_nothing_int( unsigned value ) +{ + /* MSVC has a warning about unary minus on unsigned, but this is + * well-defined and precisely what we want to do here */ +#if defined(_MSC_VER) +#pragma warning( push ) +#pragma warning( disable : 4146 ) +#endif + return( - ( ( value | - value ) >> ( sizeof( value ) * 8 - 1 ) ) ); +#if defined(_MSC_VER) +#pragma warning( pop ) +#endif +} + +/** Check whether a size is out of bounds, without branches. + * + * This is equivalent to `size > max`, but is likely to be compiled to + * to code using bitwise operation rather than a branch. + * + * \param size Size to check. + * \param max Maximum desired value for \p size. + * \return \c 0 if `size <= max`. + * \return \c 1 if `size > max`. + */ +static unsigned size_greater_than( size_t size, size_t max ) +{ + /* Return the sign bit (1 for negative) of (max - size). */ + return( ( max - size ) >> ( sizeof( size_t ) * 8 - 1 ) ); +} + +/** Choose between two integer values, without branches. + * + * This is equivalent to `cond ? if1 : if0`, but is likely to be compiled + * to code using bitwise operation rather than a branch. + * + * \param cond Condition to test. + * \param if1 Value to use if \p cond is nonzero. + * \param if0 Value to use if \p cond is zero. + * \return \c if1 if \p cond is nonzero, otherwise \c if0. + */ +static unsigned if_int( unsigned cond, unsigned if1, unsigned if0 ) +{ + unsigned mask = all_or_nothing_int( cond ); + return( ( mask & if1 ) | (~mask & if0 ) ); +} + +/** Shift some data towards the left inside a buffer without leaking + * the length of the data through side channels. + * + * `mem_move_to_left(start, total, offset)` is functionally equivalent to + * ``` + * memmove(start, start + offset, total - offset); + * memset(start + offset, 0, total - offset); + * ``` + * but it strives to use a memory access pattern (and thus total timing) + * that does not depend on \p offset. This timing independence comes at + * the expense of performance. + * + * \param start Pointer to the start of the buffer. + * \param total Total size of the buffer. + * \param offset Offset from which to copy \p total - \p offset bytes. + */ +static void mem_move_to_left( void *start, + size_t total, + size_t offset ) +{ + volatile unsigned char *buf = start; + size_t i, n; + if( total == 0 ) + return; + for( i = 0; i < total; i++ ) + { + unsigned no_op = size_greater_than( total - offset, i ); + /* The first `total - offset` passes are a no-op. The last + * `offset` passes shift the data one byte to the left and + * zero out the last byte. */ + for( n = 0; n < total - 1; n++ ) + { + unsigned char current = buf[n]; + unsigned char next = buf[n+1]; + buf[n] = if_int( no_op, current, next ); + } + buf[total-1] = if_int( no_op, buf[total-1], 0 ); + } +} + /* * Implementation of the PKCS#1 v2.1 RSAES-PKCS1-V1_5-DECRYPT function */ @@ -1387,18 +1553,42 @@ int mbedtls_rsa_rsaes_pkcs1_v15_decrypt( mbedtls_rsa_context *ctx, int mode, size_t *olen, const unsigned char *input, unsigned char *output, - size_t output_max_len) + size_t output_max_len ) { int ret; - size_t ilen, pad_count = 0, i; - unsigned char *p, bad, pad_done = 0; + size_t ilen, i, plaintext_max_size; unsigned char buf[MBEDTLS_MPI_MAX_SIZE]; + /* The following variables take sensitive values: their value must + * not leak into the observable behavior of the function other than + * the designated outputs (output, olen, return value). Otherwise + * this would open the execution of the function to + * side-channel-based variants of the Bleichenbacher padding oracle + * attack. Potential side channels include overall timing, memory + * access patterns (especially visible to an adversary who has access + * to a shared memory cache), and branches (especially visible to + * an adversary who has access to a shared code cache or to a shared + * branch predictor). */ + size_t pad_count = 0; + unsigned bad = 0; + unsigned char pad_done = 0; + size_t plaintext_size = 0; + unsigned output_too_large; + + RSA_VALIDATE_RET( ctx != NULL ); + RSA_VALIDATE_RET( mode == MBEDTLS_RSA_PRIVATE || + mode == MBEDTLS_RSA_PUBLIC ); + RSA_VALIDATE_RET( output_max_len == 0 || output != NULL ); + RSA_VALIDATE_RET( input != NULL ); + RSA_VALIDATE_RET( olen != NULL ); + + ilen = ctx->len; + plaintext_max_size = ( output_max_len > ilen - 11 ? + ilen - 11 : + output_max_len ); if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V15 ) return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); - ilen = ctx->len; - if( ilen < 16 || ilen > sizeof( buf ) ) return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); @@ -1409,63 +1599,109 @@ int mbedtls_rsa_rsaes_pkcs1_v15_decrypt( mbedtls_rsa_context *ctx, if( ret != 0 ) goto cleanup; - p = buf; - bad = 0; - - /* - * Check and get padding len in "constant-time" - */ - bad |= *p++; /* First byte must be 0 */ + /* Check and get padding length in constant time and constant + * memory trace. The first byte must be 0. */ + bad |= buf[0]; - /* This test does not depend on secret data */ if( mode == MBEDTLS_RSA_PRIVATE ) { - bad |= *p++ ^ MBEDTLS_RSA_CRYPT; + /* Decode EME-PKCS1-v1_5 padding: 0x00 || 0x02 || PS || 0x00 + * where PS must be at least 8 nonzero bytes. */ + bad |= buf[1] ^ MBEDTLS_RSA_CRYPT; - /* Get padding len, but always read till end of buffer - * (minus one, for the 00 byte) */ - for( i = 0; i < ilen - 3; i++ ) + /* Read the whole buffer. Set pad_done to nonzero if we find + * the 0x00 byte and remember the padding length in pad_count. */ + for( i = 2; i < ilen; i++ ) { - pad_done |= ((p[i] | (unsigned char)-p[i]) >> 7) ^ 1; + pad_done |= ((buf[i] | (unsigned char)-buf[i]) >> 7) ^ 1; pad_count += ((pad_done | (unsigned char)-pad_done) >> 7) ^ 1; } - - p += pad_count; - bad |= *p++; /* Must be zero */ } else { - bad |= *p++ ^ MBEDTLS_RSA_SIGN; + /* Decode EMSA-PKCS1-v1_5 padding: 0x00 || 0x01 || PS || 0x00 + * where PS must be at least 8 bytes with the value 0xFF. */ + bad |= buf[1] ^ MBEDTLS_RSA_SIGN; - /* Get padding len, but always read till end of buffer - * (minus one, for the 00 byte) */ - for( i = 0; i < ilen - 3; i++ ) + /* Read the whole buffer. Set pad_done to nonzero if we find + * the 0x00 byte and remember the padding length in pad_count. + * If there's a non-0xff byte in the padding, the padding is bad. */ + for( i = 2; i < ilen; i++ ) { - pad_done |= ( p[i] != 0xFF ); - pad_count += ( pad_done == 0 ); + pad_done |= if_int( buf[i], 0, 1 ); + pad_count += if_int( pad_done, 0, 1 ); + bad |= if_int( pad_done, 0, buf[i] ^ 0xFF ); } - - p += pad_count; - bad |= *p++; /* Must be zero */ } - bad |= ( pad_count < 8 ); - - if( bad ) - { - ret = MBEDTLS_ERR_RSA_INVALID_PADDING; - goto cleanup; - } - - if( ilen - ( p - buf ) > output_max_len ) - { - ret = MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE; - goto cleanup; - } - - *olen = ilen - (p - buf); - memcpy( output, p, *olen ); - ret = 0; + /* If pad_done is still zero, there's no data, only unfinished padding. */ + bad |= if_int( pad_done, 0, 1 ); + + /* There must be at least 8 bytes of padding. */ + bad |= size_greater_than( 8, pad_count ); + + /* If the padding is valid, set plaintext_size to the number of + * remaining bytes after stripping the padding. If the padding + * is invalid, avoid leaking this fact through the size of the + * output: use the maximum message size that fits in the output + * buffer. Do it without branches to avoid leaking the padding + * validity through timing. RSA keys are small enough that all the + * size_t values involved fit in unsigned int. */ + plaintext_size = if_int( bad, + (unsigned) plaintext_max_size, + (unsigned) ( ilen - pad_count - 3 ) ); + + /* Set output_too_large to 0 if the plaintext fits in the output + * buffer and to 1 otherwise. */ + output_too_large = size_greater_than( plaintext_size, + plaintext_max_size ); + + /* Set ret without branches to avoid timing attacks. Return: + * - INVALID_PADDING if the padding is bad (bad != 0). + * - OUTPUT_TOO_LARGE if the padding is good but the decrypted + * plaintext does not fit in the output buffer. + * - 0 if the padding is correct. */ + ret = - (int) if_int( bad, - MBEDTLS_ERR_RSA_INVALID_PADDING, + if_int( output_too_large, - MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE, + 0 ) ); + + /* If the padding is bad or the plaintext is too large, zero the + * data that we're about to copy to the output buffer. + * We need to copy the same amount of data + * from the same buffer whether the padding is good or not to + * avoid leaking the padding validity through overall timing or + * through memory or cache access patterns. */ + bad = all_or_nothing_int( bad | output_too_large ); + for( i = 11; i < ilen; i++ ) + buf[i] &= ~bad; + + /* If the plaintext is too large, truncate it to the buffer size. + * Copy anyway to avoid revealing the length through timing, because + * revealing the length is as bad as revealing the padding validity + * for a Bleichenbacher attack. */ + plaintext_size = if_int( output_too_large, + (unsigned) plaintext_max_size, + (unsigned) plaintext_size ); + + /* Move the plaintext to the leftmost position where it can start in + * the working buffer, i.e. make it start plaintext_max_size from + * the end of the buffer. Do this with a memory access trace that + * does not depend on the plaintext size. After this move, the + * starting location of the plaintext is no longer sensitive + * information. */ + mem_move_to_left( buf + ilen - plaintext_max_size, + plaintext_max_size, + plaintext_max_size - plaintext_size ); + + /* Finally copy the decrypted plaintext plus trailing zeros + * into the output buffer. */ + memcpy( output, buf + ilen - plaintext_max_size, plaintext_max_size ); + + /* Report the amount of data we copied to the output buffer. In case + * of errors (bad padding or output too large), the value of *olen + * when this function returns is not specified. Making it equivalent + * to the good case limits the risks of leaking the padding validity. */ + *olen = plaintext_size; cleanup: mbedtls_platform_zeroize( buf, sizeof( buf ) ); @@ -1485,6 +1721,13 @@ int mbedtls_rsa_pkcs1_decrypt( mbedtls_rsa_context *ctx, unsigned char *output, size_t output_max_len) { + RSA_VALIDATE_RET( ctx != NULL ); + RSA_VALIDATE_RET( mode == MBEDTLS_RSA_PRIVATE || + mode == MBEDTLS_RSA_PUBLIC ); + RSA_VALIDATE_RET( output_max_len == 0 || output != NULL ); + RSA_VALIDATE_RET( input != NULL ); + RSA_VALIDATE_RET( olen != NULL ); + switch( ctx->padding ) { #if defined(MBEDTLS_PKCS1_V15) @@ -1521,11 +1764,18 @@ int mbedtls_rsa_rsassa_pss_sign( mbedtls_rsa_context *ctx, size_t olen; unsigned char *p = sig; unsigned char salt[MBEDTLS_MD_MAX_SIZE]; - unsigned int slen, hlen, offset = 0; + size_t slen, min_slen, hlen, offset = 0; int ret; size_t msb; const mbedtls_md_info_t *md_info; mbedtls_md_context_t md_ctx; + RSA_VALIDATE_RET( ctx != NULL ); + RSA_VALIDATE_RET( mode == MBEDTLS_RSA_PRIVATE || + mode == MBEDTLS_RSA_PUBLIC ); + RSA_VALIDATE_RET( ( md_alg == MBEDTLS_MD_NONE && + hashlen == 0 ) || + hash != NULL ); + RSA_VALIDATE_RET( sig != NULL ); if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V21 ) return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); @@ -1550,10 +1800,20 @@ int mbedtls_rsa_rsassa_pss_sign( mbedtls_rsa_context *ctx, return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); hlen = mbedtls_md_get_size( md_info ); - slen = hlen; - if( olen < hlen + slen + 2 ) + /* Calculate the largest possible salt length. Normally this is the hash + * length, which is the maximum length the salt can have. If there is not + * enough room, use the maximum salt length that fits. The constraint is + * that the hash length plus the salt length plus 2 bytes must be at most + * the key length. This complies with FIPS 186-4 §5.5 (e) and RFC 8017 + * (PKCS#1 v2.2) §9.1.1 step 3. */ + min_slen = hlen - 2; + if( olen < hlen + min_slen + 2 ) return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); + else if( olen >= hlen + hlen + 2 ) + slen = hlen; + else + slen = olen - hlen - 2; memset( sig, 0, olen ); @@ -1563,7 +1823,7 @@ int mbedtls_rsa_rsassa_pss_sign( mbedtls_rsa_context *ctx, /* Note: EMSA-PSS encoding is over the length of N - 1 bits */ msb = mbedtls_mpi_bitlen( &ctx->N ) - 1; - p += olen - hlen * 2 - 2; + p += olen - hlen - slen - 2; *p++ = 0x01; memcpy( p, salt, slen ); p += slen; @@ -1763,6 +2023,14 @@ int mbedtls_rsa_rsassa_pkcs1_v15_sign( mbedtls_rsa_context *ctx, int ret; unsigned char *sig_try = NULL, *verif = NULL; + RSA_VALIDATE_RET( ctx != NULL ); + RSA_VALIDATE_RET( mode == MBEDTLS_RSA_PRIVATE || + mode == MBEDTLS_RSA_PUBLIC ); + RSA_VALIDATE_RET( ( md_alg == MBEDTLS_MD_NONE && + hashlen == 0 ) || + hash != NULL ); + RSA_VALIDATE_RET( sig != NULL ); + if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V15 ) return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); @@ -1832,6 +2100,14 @@ int mbedtls_rsa_pkcs1_sign( mbedtls_rsa_context *ctx, const unsigned char *hash, unsigned char *sig ) { + RSA_VALIDATE_RET( ctx != NULL ); + RSA_VALIDATE_RET( mode == MBEDTLS_RSA_PRIVATE || + mode == MBEDTLS_RSA_PUBLIC ); + RSA_VALIDATE_RET( ( md_alg == MBEDTLS_MD_NONE && + hashlen == 0 ) || + hash != NULL ); + RSA_VALIDATE_RET( sig != NULL ); + switch( ctx->padding ) { #if defined(MBEDTLS_PKCS1_V15) @@ -1878,6 +2154,14 @@ int mbedtls_rsa_rsassa_pss_verify_ext( mbedtls_rsa_context *ctx, mbedtls_md_context_t md_ctx; unsigned char buf[MBEDTLS_MPI_MAX_SIZE]; + RSA_VALIDATE_RET( ctx != NULL ); + RSA_VALIDATE_RET( mode == MBEDTLS_RSA_PRIVATE || + mode == MBEDTLS_RSA_PUBLIC ); + RSA_VALIDATE_RET( sig != NULL ); + RSA_VALIDATE_RET( ( md_alg == MBEDTLS_MD_NONE && + hashlen == 0 ) || + hash != NULL ); + if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V21 ) return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); @@ -2006,7 +2290,16 @@ int mbedtls_rsa_rsassa_pss_verify( mbedtls_rsa_context *ctx, const unsigned char *hash, const unsigned char *sig ) { - mbedtls_md_type_t mgf1_hash_id = ( ctx->hash_id != MBEDTLS_MD_NONE ) + mbedtls_md_type_t mgf1_hash_id; + RSA_VALIDATE_RET( ctx != NULL ); + RSA_VALIDATE_RET( mode == MBEDTLS_RSA_PRIVATE || + mode == MBEDTLS_RSA_PUBLIC ); + RSA_VALIDATE_RET( sig != NULL ); + RSA_VALIDATE_RET( ( md_alg == MBEDTLS_MD_NONE && + hashlen == 0 ) || + hash != NULL ); + + mgf1_hash_id = ( ctx->hash_id != MBEDTLS_MD_NONE ) ? (mbedtls_md_type_t) ctx->hash_id : md_alg; @@ -2032,9 +2325,19 @@ int mbedtls_rsa_rsassa_pkcs1_v15_verify( mbedtls_rsa_context *ctx, const unsigned char *sig ) { int ret = 0; - const size_t sig_len = ctx->len; + size_t sig_len; unsigned char *encoded = NULL, *encoded_expected = NULL; + RSA_VALIDATE_RET( ctx != NULL ); + RSA_VALIDATE_RET( mode == MBEDTLS_RSA_PRIVATE || + mode == MBEDTLS_RSA_PUBLIC ); + RSA_VALIDATE_RET( sig != NULL ); + RSA_VALIDATE_RET( ( md_alg == MBEDTLS_MD_NONE && + hashlen == 0 ) || + hash != NULL ); + + sig_len = ctx->len; + if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V15 ) return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); @@ -2104,6 +2407,14 @@ int mbedtls_rsa_pkcs1_verify( mbedtls_rsa_context *ctx, const unsigned char *hash, const unsigned char *sig ) { + RSA_VALIDATE_RET( ctx != NULL ); + RSA_VALIDATE_RET( mode == MBEDTLS_RSA_PRIVATE || + mode == MBEDTLS_RSA_PUBLIC ); + RSA_VALIDATE_RET( sig != NULL ); + RSA_VALIDATE_RET( ( md_alg == MBEDTLS_MD_NONE && + hashlen == 0 ) || + hash != NULL ); + switch( ctx->padding ) { #if defined(MBEDTLS_PKCS1_V15) @@ -2129,6 +2440,8 @@ int mbedtls_rsa_pkcs1_verify( mbedtls_rsa_context *ctx, int mbedtls_rsa_copy( mbedtls_rsa_context *dst, const mbedtls_rsa_context *src ) { int ret; + RSA_VALIDATE_RET( dst != NULL ); + RSA_VALIDATE_RET( src != NULL ); dst->ver = src->ver; dst->len = src->len; @@ -2168,14 +2481,23 @@ cleanup: */ void mbedtls_rsa_free( mbedtls_rsa_context *ctx ) { - mbedtls_mpi_free( &ctx->Vi ); mbedtls_mpi_free( &ctx->Vf ); - mbedtls_mpi_free( &ctx->RN ); mbedtls_mpi_free( &ctx->D ); - mbedtls_mpi_free( &ctx->Q ); mbedtls_mpi_free( &ctx->P ); - mbedtls_mpi_free( &ctx->E ); mbedtls_mpi_free( &ctx->N ); + if( ctx == NULL ) + return; + + mbedtls_mpi_free( &ctx->Vi ); + mbedtls_mpi_free( &ctx->Vf ); + mbedtls_mpi_free( &ctx->RN ); + mbedtls_mpi_free( &ctx->D ); + mbedtls_mpi_free( &ctx->Q ); + mbedtls_mpi_free( &ctx->P ); + mbedtls_mpi_free( &ctx->E ); + mbedtls_mpi_free( &ctx->N ); #if !defined(MBEDTLS_RSA_NO_CRT) - mbedtls_mpi_free( &ctx->RQ ); mbedtls_mpi_free( &ctx->RP ); - mbedtls_mpi_free( &ctx->QP ); mbedtls_mpi_free( &ctx->DQ ); + mbedtls_mpi_free( &ctx->RQ ); + mbedtls_mpi_free( &ctx->RP ); + mbedtls_mpi_free( &ctx->QP ); + mbedtls_mpi_free( &ctx->DQ ); mbedtls_mpi_free( &ctx->DP ); #endif /* MBEDTLS_RSA_NO_CRT */ diff --git a/thirdparty/mbedtls/library/rsa_internal.c b/thirdparty/mbedtls/library/rsa_internal.c index 507009f131..9a42d47ceb 100644 --- a/thirdparty/mbedtls/library/rsa_internal.c +++ b/thirdparty/mbedtls/library/rsa_internal.c @@ -351,15 +351,20 @@ int mbedtls_rsa_validate_params( const mbedtls_mpi *N, const mbedtls_mpi *P, */ #if defined(MBEDTLS_GENPRIME) + /* + * When generating keys, the strongest security we support aims for an error + * rate of at most 2^-100 and we are aiming for the same certainty here as + * well. + */ if( f_rng != NULL && P != NULL && - ( ret = mbedtls_mpi_is_prime( P, f_rng, p_rng ) ) != 0 ) + ( ret = mbedtls_mpi_is_prime_ext( P, 50, f_rng, p_rng ) ) != 0 ) { ret = MBEDTLS_ERR_RSA_KEY_CHECK_FAILED; goto cleanup; } if( f_rng != NULL && Q != NULL && - ( ret = mbedtls_mpi_is_prime( Q, f_rng, p_rng ) ) != 0 ) + ( ret = mbedtls_mpi_is_prime_ext( Q, 50, f_rng, p_rng ) ) != 0 ) { ret = MBEDTLS_ERR_RSA_KEY_CHECK_FAILED; goto cleanup; diff --git a/thirdparty/mbedtls/library/sha1.c b/thirdparty/mbedtls/library/sha1.c index bab6087c4e..e8d4096fbb 100644 --- a/thirdparty/mbedtls/library/sha1.c +++ b/thirdparty/mbedtls/library/sha1.c @@ -46,6 +46,11 @@ #endif /* MBEDTLS_PLATFORM_C */ #endif /* MBEDTLS_SELF_TEST */ +#define SHA1_VALIDATE_RET(cond) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_SHA1_BAD_INPUT_DATA ) + +#define SHA1_VALIDATE(cond) MBEDTLS_INTERNAL_VALIDATE( cond ) + #if !defined(MBEDTLS_SHA1_ALT) /* @@ -73,6 +78,8 @@ void mbedtls_sha1_init( mbedtls_sha1_context *ctx ) { + SHA1_VALIDATE( ctx != NULL ); + memset( ctx, 0, sizeof( mbedtls_sha1_context ) ); } @@ -87,6 +94,9 @@ void mbedtls_sha1_free( mbedtls_sha1_context *ctx ) void mbedtls_sha1_clone( mbedtls_sha1_context *dst, const mbedtls_sha1_context *src ) { + SHA1_VALIDATE( dst != NULL ); + SHA1_VALIDATE( src != NULL ); + *dst = *src; } @@ -95,6 +105,8 @@ void mbedtls_sha1_clone( mbedtls_sha1_context *dst, */ int mbedtls_sha1_starts_ret( mbedtls_sha1_context *ctx ) { + SHA1_VALIDATE_RET( ctx != NULL ); + ctx->total[0] = 0; ctx->total[1] = 0; @@ -120,6 +132,9 @@ int mbedtls_internal_sha1_process( mbedtls_sha1_context *ctx, { uint32_t temp, W[16], A, B, C, D, E; + SHA1_VALIDATE_RET( ctx != NULL ); + SHA1_VALIDATE_RET( (const unsigned char *)data != NULL ); + GET_UINT32_BE( W[ 0], data, 0 ); GET_UINT32_BE( W[ 1], data, 4 ); GET_UINT32_BE( W[ 2], data, 8 ); @@ -294,6 +309,9 @@ int mbedtls_sha1_update_ret( mbedtls_sha1_context *ctx, size_t fill; uint32_t left; + SHA1_VALIDATE_RET( ctx != NULL ); + SHA1_VALIDATE_RET( ilen == 0 || input != NULL ); + if( ilen == 0 ) return( 0 ); @@ -352,6 +370,9 @@ int mbedtls_sha1_finish_ret( mbedtls_sha1_context *ctx, uint32_t used; uint32_t high, low; + SHA1_VALIDATE_RET( ctx != NULL ); + SHA1_VALIDATE_RET( (unsigned char *)output != NULL ); + /* * Add padding: 0x80 then 0x00 until 8 bytes remain for the length */ @@ -420,6 +441,9 @@ int mbedtls_sha1_ret( const unsigned char *input, int ret; mbedtls_sha1_context ctx; + SHA1_VALIDATE_RET( ilen == 0 || input != NULL ); + SHA1_VALIDATE_RET( (unsigned char *)output != NULL ); + mbedtls_sha1_init( &ctx ); if( ( ret = mbedtls_sha1_starts_ret( &ctx ) ) != 0 ) diff --git a/thirdparty/mbedtls/library/sha256.c b/thirdparty/mbedtls/library/sha256.c index dbb4a89861..8a540adfbe 100644 --- a/thirdparty/mbedtls/library/sha256.c +++ b/thirdparty/mbedtls/library/sha256.c @@ -49,6 +49,10 @@ #endif /* MBEDTLS_PLATFORM_C */ #endif /* MBEDTLS_SELF_TEST */ +#define SHA256_VALIDATE_RET(cond) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_SHA256_BAD_INPUT_DATA ) +#define SHA256_VALIDATE(cond) MBEDTLS_INTERNAL_VALIDATE( cond ) + #if !defined(MBEDTLS_SHA256_ALT) /* @@ -76,6 +80,8 @@ do { \ void mbedtls_sha256_init( mbedtls_sha256_context *ctx ) { + SHA256_VALIDATE( ctx != NULL ); + memset( ctx, 0, sizeof( mbedtls_sha256_context ) ); } @@ -90,6 +96,9 @@ void mbedtls_sha256_free( mbedtls_sha256_context *ctx ) void mbedtls_sha256_clone( mbedtls_sha256_context *dst, const mbedtls_sha256_context *src ) { + SHA256_VALIDATE( dst != NULL ); + SHA256_VALIDATE( src != NULL ); + *dst = *src; } @@ -98,6 +107,9 @@ void mbedtls_sha256_clone( mbedtls_sha256_context *dst, */ int mbedtls_sha256_starts_ret( mbedtls_sha256_context *ctx, int is224 ) { + SHA256_VALIDATE_RET( ctx != NULL ); + SHA256_VALIDATE_RET( is224 == 0 || is224 == 1 ); + ctx->total[0] = 0; ctx->total[1] = 0; @@ -192,6 +204,9 @@ int mbedtls_internal_sha256_process( mbedtls_sha256_context *ctx, uint32_t A[8]; unsigned int i; + SHA256_VALIDATE_RET( ctx != NULL ); + SHA256_VALIDATE_RET( (const unsigned char *)data != NULL ); + for( i = 0; i < 8; i++ ) A[i] = ctx->state[i]; @@ -263,6 +278,9 @@ int mbedtls_sha256_update_ret( mbedtls_sha256_context *ctx, size_t fill; uint32_t left; + SHA256_VALIDATE_RET( ctx != NULL ); + SHA256_VALIDATE_RET( ilen == 0 || input != NULL ); + if( ilen == 0 ) return( 0 ); @@ -321,6 +339,9 @@ int mbedtls_sha256_finish_ret( mbedtls_sha256_context *ctx, uint32_t used; uint32_t high, low; + SHA256_VALIDATE_RET( ctx != NULL ); + SHA256_VALIDATE_RET( (unsigned char *)output != NULL ); + /* * Add padding: 0x80 then 0x00 until 8 bytes remain for the length */ @@ -395,6 +416,10 @@ int mbedtls_sha256_ret( const unsigned char *input, int ret; mbedtls_sha256_context ctx; + SHA256_VALIDATE_RET( is224 == 0 || is224 == 1 ); + SHA256_VALIDATE_RET( ilen == 0 || input != NULL ); + SHA256_VALIDATE_RET( (unsigned char *)output != NULL ); + mbedtls_sha256_init( &ctx ); if( ( ret = mbedtls_sha256_starts_ret( &ctx, is224 ) ) != 0 ) diff --git a/thirdparty/mbedtls/library/sha512.c b/thirdparty/mbedtls/library/sha512.c index a9440e8af5..941ecda762 100644 --- a/thirdparty/mbedtls/library/sha512.c +++ b/thirdparty/mbedtls/library/sha512.c @@ -55,6 +55,10 @@ #endif /* MBEDTLS_PLATFORM_C */ #endif /* MBEDTLS_SELF_TEST */ +#define SHA512_VALIDATE_RET(cond) \ + MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_SHA512_BAD_INPUT_DATA ) +#define SHA512_VALIDATE(cond) MBEDTLS_INTERNAL_VALIDATE( cond ) + #if !defined(MBEDTLS_SHA512_ALT) /* @@ -90,6 +94,8 @@ void mbedtls_sha512_init( mbedtls_sha512_context *ctx ) { + SHA512_VALIDATE( ctx != NULL ); + memset( ctx, 0, sizeof( mbedtls_sha512_context ) ); } @@ -104,6 +110,9 @@ void mbedtls_sha512_free( mbedtls_sha512_context *ctx ) void mbedtls_sha512_clone( mbedtls_sha512_context *dst, const mbedtls_sha512_context *src ) { + SHA512_VALIDATE( dst != NULL ); + SHA512_VALIDATE( src != NULL ); + *dst = *src; } @@ -112,6 +121,9 @@ void mbedtls_sha512_clone( mbedtls_sha512_context *dst, */ int mbedtls_sha512_starts_ret( mbedtls_sha512_context *ctx, int is384 ) { + SHA512_VALIDATE_RET( ctx != NULL ); + SHA512_VALIDATE_RET( is384 == 0 || is384 == 1 ); + ctx->total[0] = 0; ctx->total[1] = 0; @@ -209,6 +221,9 @@ int mbedtls_internal_sha512_process( mbedtls_sha512_context *ctx, uint64_t temp1, temp2, W[80]; uint64_t A, B, C, D, E, F, G, H; + SHA512_VALIDATE_RET( ctx != NULL ); + SHA512_VALIDATE_RET( (const unsigned char *)data != NULL ); + #define SHR(x,n) (x >> n) #define ROTR(x,n) (SHR(x,n) | (x << (64 - n))) @@ -294,6 +309,9 @@ int mbedtls_sha512_update_ret( mbedtls_sha512_context *ctx, size_t fill; unsigned int left; + SHA512_VALIDATE_RET( ctx != NULL ); + SHA512_VALIDATE_RET( ilen == 0 || input != NULL ); + if( ilen == 0 ) return( 0 ); @@ -351,6 +369,9 @@ int mbedtls_sha512_finish_ret( mbedtls_sha512_context *ctx, unsigned used; uint64_t high, low; + SHA512_VALIDATE_RET( ctx != NULL ); + SHA512_VALIDATE_RET( (unsigned char *)output != NULL ); + /* * Add padding: 0x80 then 0x00 until 16 bytes remain for the length */ @@ -427,6 +448,10 @@ int mbedtls_sha512_ret( const unsigned char *input, int ret; mbedtls_sha512_context ctx; + SHA512_VALIDATE_RET( is384 == 0 || is384 == 1 ); + SHA512_VALIDATE_RET( ilen == 0 || input != NULL ); + SHA512_VALIDATE_RET( (unsigned char *)output != NULL ); + mbedtls_sha512_init( &ctx ); if( ( ret = mbedtls_sha512_starts_ret( &ctx, is384 ) ) != 0 ) diff --git a/thirdparty/mbedtls/library/ssl_ciphersuites.c b/thirdparty/mbedtls/library/ssl_ciphersuites.c index 59cdc7a806..745474effe 100644 --- a/thirdparty/mbedtls/library/ssl_ciphersuites.c +++ b/thirdparty/mbedtls/library/ssl_ciphersuites.c @@ -2320,7 +2320,8 @@ mbedtls_pk_type_t mbedtls_ssl_get_ciphersuite_sig_alg( const mbedtls_ssl_ciphers #endif /* MBEDTLS_PK_C */ -#if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) +#if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) || \ + defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED) int mbedtls_ssl_ciphersuite_uses_ec( const mbedtls_ssl_ciphersuite_t *info ) { switch( info->key_exchange ) @@ -2330,13 +2331,14 @@ int mbedtls_ssl_ciphersuite_uses_ec( const mbedtls_ssl_ciphersuite_t *info ) case MBEDTLS_KEY_EXCHANGE_ECDHE_PSK: case MBEDTLS_KEY_EXCHANGE_ECDH_RSA: case MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA: + case MBEDTLS_KEY_EXCHANGE_ECJPAKE: return( 1 ); default: return( 0 ); } } -#endif /* MBEDTLS_ECDH_C || MBEDTLS_ECDSA_C */ +#endif /* MBEDTLS_ECDH_C || MBEDTLS_ECDSA_C || MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED*/ #if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED) int mbedtls_ssl_ciphersuite_uses_psk( const mbedtls_ssl_ciphersuite_t *info ) diff --git a/thirdparty/mbedtls/library/ssl_cli.c b/thirdparty/mbedtls/library/ssl_cli.c index ba59c48989..afced7a99c 100644 --- a/thirdparty/mbedtls/library/ssl_cli.c +++ b/thirdparty/mbedtls/library/ssl_cli.c @@ -766,6 +766,10 @@ static int ssl_write_client_hello( mbedtls_ssl_context *ssl ) unsigned char offer_compress; const int *ciphersuites; const mbedtls_ssl_ciphersuite_t *ciphersuite_info; +#if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) || \ + defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED) + int uses_ec = 0; +#endif MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write client hello" ) ); @@ -917,6 +921,11 @@ static int ssl_write_client_hello( mbedtls_ssl_context *ssl ) MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello, add ciphersuite: %04x", ciphersuites[i] ) ); +#if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) || \ + defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED) + uses_ec |= mbedtls_ssl_ciphersuite_uses_ec( ciphersuite_info ); +#endif + n++; *p++ = (unsigned char)( ciphersuites[i] >> 8 ); *p++ = (unsigned char)( ciphersuites[i] ); @@ -1010,11 +1019,14 @@ static int ssl_write_client_hello( mbedtls_ssl_context *ssl ) #if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) || \ defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED) - ssl_write_supported_elliptic_curves_ext( ssl, p + 2 + ext_len, &olen ); - ext_len += olen; + if( uses_ec ) + { + ssl_write_supported_elliptic_curves_ext( ssl, p + 2 + ext_len, &olen ); + ext_len += olen; - ssl_write_supported_point_formats_ext( ssl, p + 2 + ext_len, &olen ); - ext_len += olen; + ssl_write_supported_point_formats_ext( ssl, p + 2 + ext_len, &olen ); + ext_len += olen; + } #endif #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED) @@ -1076,11 +1088,20 @@ static int ssl_write_client_hello( mbedtls_ssl_context *ssl ) mbedtls_ssl_send_flight_completed( ssl ); #endif - if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 ) + { + MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret ); + return( ret ); + } + +#if defined(MBEDTLS_SSL_PROTO_DTLS) + if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM && + ( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 ) { - MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret ); + MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_flight_transmit", ret ); return( ret ); } +#endif /* MBEDTLS_SSL_PROTO_DTLS */ MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write client hello" ) ); @@ -1479,7 +1500,7 @@ static int ssl_parse_server_hello( mbedtls_ssl_context *ssl ) buf = ssl->in_msg; - if( ( ret = mbedtls_ssl_read_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 ) { /* No alert on a read error. */ MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret ); @@ -1742,6 +1763,14 @@ static int ssl_parse_server_hello( mbedtls_ssl_context *ssl ) MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, chosen ciphersuite: %s", suite_info->name ) ); +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( suite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA && + ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 ) + { + ssl->handshake->ecrs_enabled = 1; + } +#endif + if( comp != MBEDTLS_SSL_COMPRESS_NULL #if defined(MBEDTLS_ZLIB_SUPPORT) && comp != MBEDTLS_SSL_COMPRESS_DEFLATE @@ -1998,8 +2027,14 @@ static int ssl_parse_server_dh_params( mbedtls_ssl_context *ssl, unsigned char * static int ssl_check_server_ecdh_params( const mbedtls_ssl_context *ssl ) { const mbedtls_ecp_curve_info *curve_info; + mbedtls_ecp_group_id grp_id; +#if defined(MBEDTLS_ECDH_LEGACY_CONTEXT) + grp_id = ssl->handshake->ecdh_ctx.grp.id; +#else + grp_id = ssl->handshake->ecdh_ctx.grp_id; +#endif - curve_info = mbedtls_ecp_curve_info_from_grp_id( ssl->handshake->ecdh_ctx.grp.id ); + curve_info = mbedtls_ecp_curve_info_from_grp_id( grp_id ); if( curve_info == NULL ) { MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); @@ -2009,14 +2044,15 @@ static int ssl_check_server_ecdh_params( const mbedtls_ssl_context *ssl ) MBEDTLS_SSL_DEBUG_MSG( 2, ( "ECDH curve: %s", curve_info->name ) ); #if defined(MBEDTLS_ECP_C) - if( mbedtls_ssl_check_curve( ssl, ssl->handshake->ecdh_ctx.grp.id ) != 0 ) + if( mbedtls_ssl_check_curve( ssl, grp_id ) != 0 ) #else if( ssl->handshake->ecdh_ctx.grp.nbits < 163 || ssl->handshake->ecdh_ctx.grp.nbits > 521 ) #endif return( -1 ); - MBEDTLS_SSL_DEBUG_ECP( 3, "ECDH: Qp", &ssl->handshake->ecdh_ctx.Qp ); + MBEDTLS_SSL_DEBUG_ECDH( 3, &ssl->handshake->ecdh_ctx, + MBEDTLS_DEBUG_ECDH_QP ); return( 0 ); } @@ -2047,6 +2083,10 @@ static int ssl_parse_server_ecdh_params( mbedtls_ssl_context *ssl, (const unsigned char **) p, end ) ) != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, ( "mbedtls_ecdh_read_params" ), ret ); +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS ) + ret = MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS; +#endif return( ret ); } @@ -2076,7 +2116,7 @@ static int ssl_parse_server_psk_hint( mbedtls_ssl_context *ssl, * * opaque psk_identity_hint<0..2^16-1>; */ - if( (*p) > end - 2 ) + if( end - (*p) < 2 ) { MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad server key exchange message " "(psk_identity_hint length)" ) ); @@ -2085,7 +2125,7 @@ static int ssl_parse_server_psk_hint( mbedtls_ssl_context *ssl, len = (*p)[0] << 8 | (*p)[1]; *p += 2; - if( (*p) > end - len ) + if( end - (*p) < (int) len ) { MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad server key exchange message " "(psk_identity_hint length)" ) ); @@ -2328,7 +2368,15 @@ static int ssl_parse_server_key_exchange( mbedtls_ssl_context *ssl ) #endif /* MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED || MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED */ - if( ( ret = mbedtls_ssl_read_record( ssl ) ) != 0 ) +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( ssl->handshake->ecrs_enabled && + ssl->handshake->ecrs_state == ssl_ecrs_ske_start_processing ) + { + goto start_processing; + } +#endif + + if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret ); return( ret ); @@ -2365,6 +2413,12 @@ static int ssl_parse_server_key_exchange( mbedtls_ssl_context *ssl ) return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE ); } +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( ssl->handshake->ecrs_enabled ) + ssl->handshake->ecrs_state = ssl_ecrs_ske_start_processing; + +start_processing: +#endif p = ssl->in_msg + mbedtls_ssl_hs_hdr_len( ssl ); end = ssl->in_msg + ssl->in_hslen; MBEDTLS_SSL_DEBUG_BUF( 3, "server key exchange", p, end - p ); @@ -2457,6 +2511,7 @@ static int ssl_parse_server_key_exchange( mbedtls_ssl_context *ssl ) mbedtls_pk_type_t pk_alg = MBEDTLS_PK_NONE; unsigned char *params = ssl->in_msg + mbedtls_ssl_hs_hdr_len( ssl ); size_t params_len = p - params; + void *rs_ctx = NULL; /* * Handle the digitally-signed structure @@ -2579,12 +2634,25 @@ static int ssl_parse_server_key_exchange( mbedtls_ssl_context *ssl ) return( MBEDTLS_ERR_SSL_PK_TYPE_MISMATCH ); } - if( ( ret = mbedtls_pk_verify( &ssl->session_negotiate->peer_cert->pk, - md_alg, hash, hashlen, p, sig_len ) ) != 0 ) +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( ssl->handshake->ecrs_enabled ) + rs_ctx = &ssl->handshake->ecrs_ctx.pk; +#endif + + if( ( ret = mbedtls_pk_verify_restartable( + &ssl->session_negotiate->peer_cert->pk, + md_alg, hash, hashlen, p, sig_len, rs_ctx ) ) != 0 ) { - mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL, - MBEDTLS_SSL_ALERT_MSG_DECRYPT_ERROR ); +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( ret != MBEDTLS_ERR_ECP_IN_PROGRESS ) +#endif + mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL, + MBEDTLS_SSL_ALERT_MSG_DECRYPT_ERROR ); MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_pk_verify", ret ); +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS ) + ret = MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS; +#endif return( ret ); } } @@ -2635,7 +2703,7 @@ static int ssl_parse_certificate_request( mbedtls_ssl_context *ssl ) return( 0 ); } - if( ( ret = mbedtls_ssl_read_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret ); return( ret ); @@ -2709,7 +2777,7 @@ static int ssl_parse_certificate_request( mbedtls_ssl_context *ssl ) * therefore the buffer length at this point must be greater than that * regardless of the actual code path. */ - if( ssl->in_hslen <= mbedtls_ssl_hs_hdr_len( ssl ) + 3 + n ) + if( ssl->in_hslen <= mbedtls_ssl_hs_hdr_len( ssl ) + 2 + n ) { MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate request message" ) ); mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL, @@ -2787,7 +2855,7 @@ static int ssl_parse_server_hello_done( mbedtls_ssl_context *ssl ) MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse server hello done" ) ); - if( ( ret = mbedtls_ssl_read_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret ); return( ret ); @@ -2882,6 +2950,16 @@ static int ssl_write_client_key_exchange( mbedtls_ssl_context *ssl ) */ i = 4; +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( ssl->handshake->ecrs_enabled ) + { + if( ssl->handshake->ecrs_state == ssl_ecrs_cke_ecdh_calc_secret ) + goto ecdh_calc_secret; + + mbedtls_ecdh_enable_restart( &ssl->handshake->ecdh_ctx ); + } +#endif + ret = mbedtls_ecdh_make_public( &ssl->handshake->ecdh_ctx, &n, &ssl->out_msg[i], 1000, @@ -2889,11 +2967,27 @@ static int ssl_write_client_key_exchange( mbedtls_ssl_context *ssl ) if( ret != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_make_public", ret ); +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS ) + ret = MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS; +#endif return( ret ); } - MBEDTLS_SSL_DEBUG_ECP( 3, "ECDH: Q", &ssl->handshake->ecdh_ctx.Q ); + MBEDTLS_SSL_DEBUG_ECDH( 3, &ssl->handshake->ecdh_ctx, + MBEDTLS_DEBUG_ECDH_Q ); + +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( ssl->handshake->ecrs_enabled ) + { + ssl->handshake->ecrs_n = n; + ssl->handshake->ecrs_state = ssl_ecrs_cke_ecdh_calc_secret; + } +ecdh_calc_secret: + if( ssl->handshake->ecrs_enabled ) + n = ssl->handshake->ecrs_n; +#endif if( ( ret = mbedtls_ecdh_calc_secret( &ssl->handshake->ecdh_ctx, &ssl->handshake->pmslen, ssl->handshake->premaster, @@ -2901,10 +2995,15 @@ static int ssl_write_client_key_exchange( mbedtls_ssl_context *ssl ) ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_calc_secret", ret ); +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS ) + ret = MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS; +#endif return( ret ); } - MBEDTLS_SSL_DEBUG_MPI( 3, "ECDH: z", &ssl->handshake->ecdh_ctx.z ); + MBEDTLS_SSL_DEBUG_ECDH( 3, &ssl->handshake->ecdh_ctx, + MBEDTLS_DEBUG_ECDH_Z ); } else #endif /* MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED || @@ -2999,7 +3098,8 @@ static int ssl_write_client_key_exchange( mbedtls_ssl_context *ssl ) return( ret ); } - MBEDTLS_SSL_DEBUG_ECP( 3, "ECDH: Q", &ssl->handshake->ecdh_ctx.Q ); + MBEDTLS_SSL_DEBUG_ECDH( 3, &ssl->handshake->ecdh_ctx, + MBEDTLS_DEBUG_ECDH_Q ); } else #endif /* MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED */ @@ -3063,9 +3163,9 @@ static int ssl_write_client_key_exchange( mbedtls_ssl_context *ssl ) ssl->state++; - if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 ) { - MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret ); + MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret ); return( ret ); } @@ -3119,9 +3219,18 @@ static int ssl_write_certificate_verify( mbedtls_ssl_context *ssl ) unsigned char *hash_start = hash; mbedtls_md_type_t md_alg = MBEDTLS_MD_NONE; unsigned int hashlen; + void *rs_ctx = NULL; MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write certificate verify" ) ); +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( ssl->handshake->ecrs_enabled && + ssl->handshake->ecrs_state == ssl_ecrs_crt_vrfy_sign ) + { + goto sign; + } +#endif + if( ( ret = mbedtls_ssl_derive_keys( ssl ) ) != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_derive_keys", ret ); @@ -3153,8 +3262,15 @@ static int ssl_write_certificate_verify( mbedtls_ssl_context *ssl ) } /* - * Make an RSA signature of the handshake digests + * Make a signature of the handshake digests */ +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( ssl->handshake->ecrs_enabled ) + ssl->handshake->ecrs_state = ssl_ecrs_crt_vrfy_sign; + +sign: +#endif + ssl->handshake->calc_verify( ssl, hash ); #if defined(MBEDTLS_SSL_PROTO_SSL3) || defined(MBEDTLS_SSL_PROTO_TLS1) || \ @@ -3231,11 +3347,21 @@ static int ssl_write_certificate_verify( mbedtls_ssl_context *ssl ) return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); } - if( ( ret = mbedtls_pk_sign( mbedtls_ssl_own_key( ssl ), md_alg, hash_start, hashlen, +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( ssl->handshake->ecrs_enabled ) + rs_ctx = &ssl->handshake->ecrs_ctx.pk; +#endif + + if( ( ret = mbedtls_pk_sign_restartable( mbedtls_ssl_own_key( ssl ), + md_alg, hash_start, hashlen, ssl->out_msg + 6 + offset, &n, - ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 ) + ssl->conf->f_rng, ssl->conf->p_rng, rs_ctx ) ) != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_pk_sign", ret ); +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS ) + ret = MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS; +#endif return( ret ); } @@ -3248,9 +3374,9 @@ static int ssl_write_certificate_verify( mbedtls_ssl_context *ssl ) ssl->state++; - if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 ) { - MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret ); + MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret ); return( ret ); } @@ -3276,7 +3402,7 @@ static int ssl_parse_new_session_ticket( mbedtls_ssl_context *ssl ) MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse new session ticket" ) ); - if( ( ret = mbedtls_ssl_read_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret ); return( ret ); @@ -3311,8 +3437,8 @@ static int ssl_parse_new_session_ticket( mbedtls_ssl_context *ssl ) msg = ssl->in_msg + mbedtls_ssl_hs_hdr_len( ssl ); - lifetime = ( msg[0] << 24 ) | ( msg[1] << 16 ) | - ( msg[2] << 8 ) | ( msg[3] ); + lifetime = ( ((uint32_t) msg[0]) << 24 ) | ( msg[1] << 16 ) | + ( msg[2] << 8 ) | ( msg[3] ); ticket_len = ( msg[4] << 8 ) | ( msg[5] ); @@ -3390,10 +3516,10 @@ int mbedtls_ssl_handshake_client_step( mbedtls_ssl_context *ssl ) if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM && ssl->handshake->retransmit_state == MBEDTLS_SSL_RETRANS_SENDING ) { - if( ( ret = mbedtls_ssl_resend( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 ) return( ret ); } -#endif +#endif /* MBEDTLS_SSL_PROTO_DTLS */ /* Change state now, so that it is right in mbedtls_ssl_read_record(), used * by DTLS for dropping out-of-sequence ChangeCipherSpec records */ diff --git a/thirdparty/mbedtls/library/ssl_srv.c b/thirdparty/mbedtls/library/ssl_srv.c index 52087ae6e1..bc77f80203 100644 --- a/thirdparty/mbedtls/library/ssl_srv.c +++ b/thirdparty/mbedtls/library/ssl_srv.c @@ -1294,7 +1294,7 @@ read_record_header: return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO ); } - memcpy( ssl->out_ctr + 2, ssl->in_ctr + 2, 6 ); + memcpy( ssl->cur_out_ctr + 2, ssl->in_ctr + 2, 6 ); #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY) if( mbedtls_ssl_dtls_replay_check( ssl ) != 0 ) @@ -2384,12 +2384,21 @@ static int ssl_write_hello_verify_request( mbedtls_ssl_context *ssl ) ssl->state = MBEDTLS_SSL_SERVER_HELLO_VERIFY_REQUEST_SENT; - if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 ) { - MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret ); + MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret ); return( ret ); } +#if defined(MBEDTLS_SSL_PROTO_DTLS) + if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM && + ( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 ) + { + MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_flight_transmit", ret ); + return( ret ); + } +#endif /* MBEDTLS_SSL_PROTO_DTLS */ + MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write hello verify request" ) ); return( 0 ); @@ -2589,8 +2598,12 @@ static int ssl_write_server_hello( mbedtls_ssl_context *ssl ) #if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) || \ defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED) - ssl_write_supported_point_formats_ext( ssl, p + 2 + ext_len, &olen ); - ext_len += olen; + if ( mbedtls_ssl_ciphersuite_uses_ec( + mbedtls_ssl_ciphersuite_from_id( ssl->session_negotiate->ciphersuite ) ) ) + { + ssl_write_supported_point_formats_ext( ssl, p + 2 + ext_len, &olen ); + ext_len += olen; + } #endif #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED) @@ -2620,7 +2633,7 @@ static int ssl_write_server_hello( mbedtls_ssl_context *ssl ) ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE; ssl->out_msg[0] = MBEDTLS_SSL_HS_SERVER_HELLO; - ret = mbedtls_ssl_write_record( ssl ); + ret = mbedtls_ssl_write_handshake_msg( ssl ); MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write server hello" ) ); @@ -2815,7 +2828,7 @@ static int ssl_write_certificate_request( mbedtls_ssl_context *ssl ) ssl->out_msg[4 + ct_len + sa_len] = (unsigned char)( total_dn_size >> 8 ); ssl->out_msg[5 + ct_len + sa_len] = (unsigned char)( total_dn_size ); - ret = mbedtls_ssl_write_record( ssl ); + ret = mbedtls_ssl_write_handshake_msg( ssl ); MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write certificate request" ) ); @@ -3035,8 +3048,8 @@ curve_matching_done: MBEDTLS_SSL_DEBUG_MSG( 2, ( "ECDHE curve: %s", (*curve)->name ) ); - if( ( ret = mbedtls_ecp_group_load( &ssl->handshake->ecdh_ctx.grp, - (*curve)->grp_id ) ) != 0 ) + if( ( ret = mbedtls_ecdh_setup( &ssl->handshake->ecdh_ctx, + (*curve)->grp_id ) ) != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecp_group_load", ret ); return( ret ); @@ -3058,7 +3071,8 @@ curve_matching_done: ssl->out_msglen += len; - MBEDTLS_SSL_DEBUG_ECP( 3, "ECDH: Q ", &ssl->handshake->ecdh_ctx.Q ); + MBEDTLS_SSL_DEBUG_ECDH( 3, &ssl->handshake->ecdh_ctx, + MBEDTLS_DEBUG_ECDH_Q ); } #endif /* MBEDTLS_KEY_EXCHANGE__SOME__ECDHE_ENABLED */ @@ -3332,9 +3346,9 @@ static int ssl_write_server_key_exchange( mbedtls_ssl_context *ssl ) ssl->state++; - if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 ) { - MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret ); + MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret ); return( ret ); } @@ -3359,11 +3373,20 @@ static int ssl_write_server_hello_done( mbedtls_ssl_context *ssl ) mbedtls_ssl_send_flight_completed( ssl ); #endif - if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 ) + { + MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret ); + return( ret ); + } + +#if defined(MBEDTLS_SSL_PROTO_DTLS) + if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM && + ( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 ) { - MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret ); + MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_flight_transmit", ret ); return( ret ); } +#endif /* MBEDTLS_SSL_PROTO_DTLS */ MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write server hello done" ) ); @@ -3706,7 +3729,7 @@ static int ssl_parse_client_key_exchange( mbedtls_ssl_context *ssl ) } else #endif - if( ( ret = mbedtls_ssl_read_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret ); return( ret ); @@ -3772,7 +3795,8 @@ static int ssl_parse_client_key_exchange( mbedtls_ssl_context *ssl ) return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_RP ); } - MBEDTLS_SSL_DEBUG_ECP( 3, "ECDH: Qp ", &ssl->handshake->ecdh_ctx.Qp ); + MBEDTLS_SSL_DEBUG_ECDH( 3, &ssl->handshake->ecdh_ctx, + MBEDTLS_DEBUG_ECDH_QP ); if( ( ret = mbedtls_ecdh_calc_secret( &ssl->handshake->ecdh_ctx, &ssl->handshake->pmslen, @@ -3784,7 +3808,8 @@ static int ssl_parse_client_key_exchange( mbedtls_ssl_context *ssl ) return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_CS ); } - MBEDTLS_SSL_DEBUG_MPI( 3, "ECDH: z ", &ssl->handshake->ecdh_ctx.z ); + MBEDTLS_SSL_DEBUG_ECDH( 3, &ssl->handshake->ecdh_ctx, + MBEDTLS_DEBUG_ECDH_Z ); } else #endif /* MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED || @@ -3897,7 +3922,8 @@ static int ssl_parse_client_key_exchange( mbedtls_ssl_context *ssl ) return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_RP ); } - MBEDTLS_SSL_DEBUG_ECP( 3, "ECDH: Qp ", &ssl->handshake->ecdh_ctx.Qp ); + MBEDTLS_SSL_DEBUG_ECDH( 3, &ssl->handshake->ecdh_ctx, + MBEDTLS_DEBUG_ECDH_QP ); if( ( ret = mbedtls_ssl_psk_derive_premaster( ssl, ciphersuite_info->key_exchange ) ) != 0 ) @@ -4016,25 +4042,10 @@ static int ssl_parse_certificate_verify( mbedtls_ssl_context *ssl ) } /* Read the message without adding it to the checksum */ - do { - - do ret = mbedtls_ssl_read_record_layer( ssl ); - while( ret == MBEDTLS_ERR_SSL_CONTINUE_PROCESSING ); - - if( ret != 0 ) - { - MBEDTLS_SSL_DEBUG_RET( 1, ( "mbedtls_ssl_read_record_layer" ), ret ); - return( ret ); - } - - ret = mbedtls_ssl_handle_message_type( ssl ); - - } while( MBEDTLS_ERR_SSL_NON_FATAL == ret || - MBEDTLS_ERR_SSL_CONTINUE_PROCESSING == ret ); - + ret = mbedtls_ssl_read_record( ssl, 0 /* no checksum update */ ); if( 0 != ret ) { - MBEDTLS_SSL_DEBUG_RET( 1, ( "mbedtls_ssl_handle_message_type" ), ret ); + MBEDTLS_SSL_DEBUG_RET( 1, ( "mbedtls_ssl_read_record" ), ret ); return( ret ); } @@ -4223,9 +4234,9 @@ static int ssl_write_new_session_ticket( mbedtls_ssl_context *ssl ) */ ssl->handshake->new_session_ticket = 0; - if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 ) { - MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret ); + MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret ); return( ret ); } @@ -4254,10 +4265,10 @@ int mbedtls_ssl_handshake_server_step( mbedtls_ssl_context *ssl ) if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM && ssl->handshake->retransmit_state == MBEDTLS_SSL_RETRANS_SENDING ) { - if( ( ret = mbedtls_ssl_resend( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 ) return( ret ); } -#endif +#endif /* MBEDTLS_SSL_PROTO_DTLS */ switch( ssl->state ) { diff --git a/thirdparty/mbedtls/library/ssl_ticket.c b/thirdparty/mbedtls/library/ssl_ticket.c index a2b304869e..8492c19a8c 100644 --- a/thirdparty/mbedtls/library/ssl_ticket.c +++ b/thirdparty/mbedtls/library/ssl_ticket.c @@ -97,7 +97,7 @@ static int ssl_ticket_update_keys( mbedtls_ssl_ticket_context *ctx ) uint32_t current_time = (uint32_t) mbedtls_time( NULL ); uint32_t key_time = ctx->keys[ctx->active].generation_time; - if( current_time > key_time && + if( current_time >= key_time && current_time - key_time < ctx->ticket_lifetime ) { return( 0 ); @@ -188,9 +188,9 @@ static int ssl_save_session( const mbedtls_ssl_session *session, if( left < 3 + cert_len ) return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL ); - *p++ = (unsigned char)( cert_len >> 16 & 0xFF ); - *p++ = (unsigned char)( cert_len >> 8 & 0xFF ); - *p++ = (unsigned char)( cert_len & 0xFF ); + *p++ = (unsigned char)( ( cert_len >> 16 ) & 0xFF ); + *p++ = (unsigned char)( ( cert_len >> 8 ) & 0xFF ); + *p++ = (unsigned char)( ( cert_len ) & 0xFF ); if( session->peer_cert != NULL ) memcpy( p, session->peer_cert->raw.p, cert_len ); @@ -215,14 +215,14 @@ static int ssl_load_session( mbedtls_ssl_session *session, size_t cert_len; #endif /* MBEDTLS_X509_CRT_PARSE_C */ - if( p + sizeof( mbedtls_ssl_session ) > end ) + if( sizeof( mbedtls_ssl_session ) > (size_t)( end - p ) ) return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); memcpy( session, p, sizeof( mbedtls_ssl_session ) ); p += sizeof( mbedtls_ssl_session ); #if defined(MBEDTLS_X509_CRT_PARSE_C) - if( p + 3 > end ) + if( 3 > (size_t)( end - p ) ) return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); cert_len = ( p[0] << 16 ) | ( p[1] << 8 ) | p[2]; @@ -236,7 +236,7 @@ static int ssl_load_session( mbedtls_ssl_session *session, { int ret; - if( p + cert_len > end ) + if( cert_len > (size_t)( end - p ) ) return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); session->peer_cert = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) ); @@ -247,7 +247,7 @@ static int ssl_load_session( mbedtls_ssl_session *session, mbedtls_x509_crt_init( session->peer_cert ); if( ( ret = mbedtls_x509_crt_parse_der( session->peer_cert, - p, cert_len ) ) != 0 ) + p, cert_len ) ) != 0 ) { mbedtls_x509_crt_free( session->peer_cert ); mbedtls_free( session->peer_cert ); diff --git a/thirdparty/mbedtls/library/ssl_tls.c b/thirdparty/mbedtls/library/ssl_tls.c index 91f96c8ab6..38690fa664 100644 --- a/thirdparty/mbedtls/library/ssl_tls.c +++ b/thirdparty/mbedtls/library/ssl_tls.c @@ -54,6 +54,9 @@ #include "mbedtls/oid.h" #endif +static void ssl_reset_in_out_pointers( mbedtls_ssl_context *ssl ); +static uint32_t ssl_get_hs_total_len( mbedtls_ssl_context const *ssl ); + /* Length of the "epoch" field in the record header */ static inline size_t ssl_ep_len( const mbedtls_ssl_context *ssl ) { @@ -96,7 +99,101 @@ static int ssl_check_timer( mbedtls_ssl_context *ssl ) return( 0 ); } +static void ssl_update_out_pointers( mbedtls_ssl_context *ssl, + mbedtls_ssl_transform *transform ); +static void ssl_update_in_pointers( mbedtls_ssl_context *ssl, + mbedtls_ssl_transform *transform ); + +#define SSL_DONT_FORCE_FLUSH 0 +#define SSL_FORCE_FLUSH 1 + #if defined(MBEDTLS_SSL_PROTO_DTLS) + +/* Forward declarations for functions related to message buffering. */ +static void ssl_buffering_free( mbedtls_ssl_context *ssl ); +static void ssl_buffering_free_slot( mbedtls_ssl_context *ssl, + uint8_t slot ); +static void ssl_free_buffered_record( mbedtls_ssl_context *ssl ); +static int ssl_load_buffered_message( mbedtls_ssl_context *ssl ); +static int ssl_load_buffered_record( mbedtls_ssl_context *ssl ); +static int ssl_buffer_message( mbedtls_ssl_context *ssl ); +static int ssl_buffer_future_record( mbedtls_ssl_context *ssl ); +static int ssl_next_record_is_in_datagram( mbedtls_ssl_context *ssl ); + +static size_t ssl_get_current_mtu( const mbedtls_ssl_context *ssl ); +static size_t ssl_get_maximum_datagram_size( mbedtls_ssl_context const *ssl ) +{ + size_t mtu = ssl_get_current_mtu( ssl ); + + if( mtu != 0 && mtu < MBEDTLS_SSL_OUT_BUFFER_LEN ) + return( mtu ); + + return( MBEDTLS_SSL_OUT_BUFFER_LEN ); +} + +static int ssl_get_remaining_space_in_datagram( mbedtls_ssl_context const *ssl ) +{ + size_t const bytes_written = ssl->out_left; + size_t const mtu = ssl_get_maximum_datagram_size( ssl ); + + /* Double-check that the write-index hasn't gone + * past what we can transmit in a single datagram. */ + if( bytes_written > mtu ) + { + /* Should never happen... */ + return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); + } + + return( (int) ( mtu - bytes_written ) ); +} + +static int ssl_get_remaining_payload_in_datagram( mbedtls_ssl_context const *ssl ) +{ + int ret; + size_t remaining, expansion; + size_t max_len = MBEDTLS_SSL_OUT_CONTENT_LEN; + +#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) + const size_t mfl = mbedtls_ssl_get_max_frag_len( ssl ); + + if( max_len > mfl ) + max_len = mfl; + + /* By the standard (RFC 6066 Sect. 4), the MFL extension + * only limits the maximum record payload size, so in theory + * we would be allowed to pack multiple records of payload size + * MFL into a single datagram. However, this would mean that there's + * no way to explicitly communicate MTU restrictions to the peer. + * + * The following reduction of max_len makes sure that we never + * write datagrams larger than MFL + Record Expansion Overhead. + */ + if( max_len <= ssl->out_left ) + return( 0 ); + + max_len -= ssl->out_left; +#endif + + ret = ssl_get_remaining_space_in_datagram( ssl ); + if( ret < 0 ) + return( ret ); + remaining = (size_t) ret; + + ret = mbedtls_ssl_get_record_expansion( ssl ); + if( ret < 0 ) + return( ret ); + expansion = (size_t) ret; + + if( remaining <= expansion ) + return( 0 ); + + remaining -= expansion; + if( remaining >= max_len ) + remaining = max_len; + + return( (int) remaining ); +} + /* * Double the retransmit timeout value, within the allowed range, * returning -1 if the maximum value has already been reached. @@ -108,6 +205,18 @@ static int ssl_double_retransmit_timeout( mbedtls_ssl_context *ssl ) if( ssl->handshake->retransmit_timeout >= ssl->conf->hs_timeout_max ) return( -1 ); + /* Implement the final paragraph of RFC 6347 section 4.1.1.1 + * in the following way: after the initial transmission and a first + * retransmission, back off to a temporary estimated MTU of 508 bytes. + * This value is guaranteed to be deliverable (if not guaranteed to be + * delivered) of any compliant IPv4 (and IPv6) network, and should work + * on most non-IP stacks too. */ + if( ssl->handshake->retransmit_timeout != ssl->conf->hs_timeout_min ) + { + ssl->handshake->mtu = 508; + MBEDTLS_SSL_DEBUG_MSG( 2, ( "mtu autoreduction to %d bytes", ssl->handshake->mtu ) ); + } + new_timeout = 2 * ssl->handshake->retransmit_timeout; /* Avoid arithmetic overflow and range overflow */ @@ -1224,7 +1333,8 @@ int mbedtls_ssl_psk_derive_premaster( mbedtls_ssl_context *ssl, mbedtls_key_exch *(p++) = (unsigned char)( zlen ); p += zlen; - MBEDTLS_SSL_DEBUG_MPI( 3, "ECDH: z", &ssl->handshake->ecdh_ctx.z ); + MBEDTLS_SSL_DEBUG_ECDH( 3, &ssl->handshake->ecdh_ctx, + MBEDTLS_DEBUG_ECDH_Z ); } else #endif /* MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED */ @@ -1345,14 +1455,6 @@ static int ssl_encrypt_buf( mbedtls_ssl_context *ssl ) MBEDTLS_SSL_DEBUG_BUF( 4, "before encrypt: output payload", ssl->out_msg, ssl->out_msglen ); - if( ssl->out_msglen > MBEDTLS_SSL_OUT_CONTENT_LEN ) - { - MBEDTLS_SSL_DEBUG_MSG( 1, ( "Record content %u too large, maximum %d", - (unsigned) ssl->out_msglen, - MBEDTLS_SSL_OUT_CONTENT_LEN ) ); - return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); - } - /* * Add MAC before if needed */ @@ -1626,6 +1728,8 @@ static int ssl_encrypt_buf( mbedtls_ssl_context *ssl ) #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) if( auth_done == 0 ) { + unsigned char mac[MBEDTLS_SSL_MAC_ADD]; + /* * MAC(MAC_write_key, seq_num + * TLSCipherText.type + @@ -1648,10 +1752,12 @@ static int ssl_encrypt_buf( mbedtls_ssl_context *ssl ) mbedtls_md_hmac_update( &ssl->transform_out->md_ctx_enc, pseudo_hdr, 13 ); mbedtls_md_hmac_update( &ssl->transform_out->md_ctx_enc, ssl->out_iv, ssl->out_msglen ); - mbedtls_md_hmac_finish( &ssl->transform_out->md_ctx_enc, - ssl->out_iv + ssl->out_msglen ); + mbedtls_md_hmac_finish( &ssl->transform_out->md_ctx_enc, mac ); mbedtls_md_hmac_reset( &ssl->transform_out->md_ctx_enc ); + memcpy( ssl->out_iv + ssl->out_msglen, mac, + ssl->transform_out->maclen ); + ssl->out_msglen += ssl->transform_out->maclen; auth_done++; } @@ -2202,13 +2308,13 @@ static int ssl_decrypt_buf( mbedtls_ssl_context *ssl ) correct = 0; } auth_done++; - - /* - * Finally check the correct flag - */ - if( correct == 0 ) - return( MBEDTLS_ERR_SSL_INVALID_MAC ); } + + /* + * Finally check the correct flag + */ + if( correct == 0 ) + return( MBEDTLS_ERR_SSL_INVALID_MAC ); #endif /* SSL_SOME_MODES_USE_MAC */ /* Make extra sure authentication was performed, exactly once */ @@ -2644,7 +2750,7 @@ int mbedtls_ssl_fetch_input( mbedtls_ssl_context *ssl, size_t nb_want ) int mbedtls_ssl_flush_output( mbedtls_ssl_context *ssl ) { int ret; - unsigned char *buf, i; + unsigned char *buf; MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> flush output" ) ); @@ -2667,8 +2773,7 @@ int mbedtls_ssl_flush_output( mbedtls_ssl_context *ssl ) MBEDTLS_SSL_DEBUG_MSG( 2, ( "message length: %d, out_left: %d", mbedtls_ssl_hdr_len( ssl ) + ssl->out_msglen, ssl->out_left ) ); - buf = ssl->out_hdr + mbedtls_ssl_hdr_len( ssl ) + - ssl->out_msglen - ssl->out_left; + buf = ssl->out_hdr - ssl->out_left; ret = ssl->f_send( ssl->p_bio, buf, ssl->out_left ); MBEDTLS_SSL_DEBUG_RET( 2, "ssl->f_send", ret ); @@ -2687,16 +2792,17 @@ int mbedtls_ssl_flush_output( mbedtls_ssl_context *ssl ) ssl->out_left -= ret; } - for( i = 8; i > ssl_ep_len( ssl ); i-- ) - if( ++ssl->out_ctr[i - 1] != 0 ) - break; - - /* The loop goes to its end iff the counter is wrapping */ - if( i == ssl_ep_len( ssl ) ) +#if defined(MBEDTLS_SSL_PROTO_DTLS) + if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM ) + { + ssl->out_hdr = ssl->out_buf; + } + else +#endif { - MBEDTLS_SSL_DEBUG_MSG( 1, ( "outgoing message counter would wrap" ) ); - return( MBEDTLS_ERR_SSL_COUNTER_WRAPPING ); + ssl->out_hdr = ssl->out_buf + 8; } + ssl_update_out_pointers( ssl, ssl->transform_out ); MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= flush output" ) ); @@ -2713,6 +2819,9 @@ int mbedtls_ssl_flush_output( mbedtls_ssl_context *ssl ) static int ssl_flight_append( mbedtls_ssl_context *ssl ) { mbedtls_ssl_flight_item *msg; + MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> ssl_flight_append" ) ); + MBEDTLS_SSL_DEBUG_BUF( 4, "message appended to flight", + ssl->out_msg, ssl->out_msglen ); /* Allocate space for current message */ if( ( msg = mbedtls_calloc( 1, sizeof( mbedtls_ssl_flight_item ) ) ) == NULL ) @@ -2746,6 +2855,7 @@ static int ssl_flight_append( mbedtls_ssl_context *ssl ) cur->next = msg; } + MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= ssl_flight_append" ) ); return( 0 ); } @@ -2794,19 +2904,12 @@ static void ssl_swap_epochs( mbedtls_ssl_context *ssl ) ssl->handshake->alt_transform_out = tmp_transform; /* Swap epoch + sequence_number */ - memcpy( tmp_out_ctr, ssl->out_ctr, 8 ); - memcpy( ssl->out_ctr, ssl->handshake->alt_out_ctr, 8 ); + memcpy( tmp_out_ctr, ssl->cur_out_ctr, 8 ); + memcpy( ssl->cur_out_ctr, ssl->handshake->alt_out_ctr, 8 ); memcpy( ssl->handshake->alt_out_ctr, tmp_out_ctr, 8 ); /* Adjust to the newly activated transform */ - if( ssl->transform_out != NULL && - ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_2 ) - { - ssl->out_msg = ssl->out_iv + ssl->transform_out->ivlen - - ssl->transform_out->fixed_ivlen; - } - else - ssl->out_msg = ssl->out_iv; + ssl_update_out_pointers( ssl, ssl->transform_out ); #if defined(MBEDTLS_SSL_HW_RECORD_ACCEL) if( mbedtls_ssl_hw_record_activate != NULL ) @@ -2822,20 +2925,38 @@ static void ssl_swap_epochs( mbedtls_ssl_context *ssl ) /* * Retransmit the current flight of messages. + */ +int mbedtls_ssl_resend( mbedtls_ssl_context *ssl ) +{ + int ret = 0; + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> mbedtls_ssl_resend" ) ); + + ret = mbedtls_ssl_flight_transmit( ssl ); + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= mbedtls_ssl_resend" ) ); + + return( ret ); +} + +/* + * Transmit or retransmit the current flight of messages. * * Need to remember the current message in case flush_output returns * WANT_WRITE, causing us to exit this function and come back later. * This function must be called until state is no longer SENDING. */ -int mbedtls_ssl_resend( mbedtls_ssl_context *ssl ) +int mbedtls_ssl_flight_transmit( mbedtls_ssl_context *ssl ) { - MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> mbedtls_ssl_resend" ) ); + int ret; + MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> mbedtls_ssl_flight_transmit" ) ); if( ssl->handshake->retransmit_state != MBEDTLS_SSL_RETRANS_SENDING ) { - MBEDTLS_SSL_DEBUG_MSG( 2, ( "initialise resending" ) ); + MBEDTLS_SSL_DEBUG_MSG( 2, ( "initialise flight transmission" ) ); ssl->handshake->cur_msg = ssl->handshake->flight; + ssl->handshake->cur_msg_p = ssl->handshake->flight->p + 12; ssl_swap_epochs( ssl ); ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_SENDING; @@ -2843,33 +2964,129 @@ int mbedtls_ssl_resend( mbedtls_ssl_context *ssl ) while( ssl->handshake->cur_msg != NULL ) { - int ret; - mbedtls_ssl_flight_item *cur = ssl->handshake->cur_msg; + size_t max_frag_len; + const mbedtls_ssl_flight_item * const cur = ssl->handshake->cur_msg; + + int const is_finished = + ( cur->type == MBEDTLS_SSL_MSG_HANDSHAKE && + cur->p[0] == MBEDTLS_SSL_HS_FINISHED ); + + uint8_t const force_flush = ssl->disable_datagram_packing == 1 ? + SSL_FORCE_FLUSH : SSL_DONT_FORCE_FLUSH; /* Swap epochs before sending Finished: we can't do it after * sending ChangeCipherSpec, in case write returns WANT_READ. * Must be done before copying, may change out_msg pointer */ - if( cur->type == MBEDTLS_SSL_MSG_HANDSHAKE && - cur->p[0] == MBEDTLS_SSL_HS_FINISHED ) + if( is_finished && ssl->handshake->cur_msg_p == ( cur->p + 12 ) ) { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "swap epochs to send finished message" ) ); ssl_swap_epochs( ssl ); } - memcpy( ssl->out_msg, cur->p, cur->len ); - ssl->out_msglen = cur->len; - ssl->out_msgtype = cur->type; + ret = ssl_get_remaining_payload_in_datagram( ssl ); + if( ret < 0 ) + return( ret ); + max_frag_len = (size_t) ret; + + /* CCS is copied as is, while HS messages may need fragmentation */ + if( cur->type == MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC ) + { + if( max_frag_len == 0 ) + { + if( ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 ) + return( ret ); + + continue; + } + + memcpy( ssl->out_msg, cur->p, cur->len ); + ssl->out_msglen = cur->len; + ssl->out_msgtype = cur->type; + + /* Update position inside current message */ + ssl->handshake->cur_msg_p += cur->len; + } + else + { + const unsigned char * const p = ssl->handshake->cur_msg_p; + const size_t hs_len = cur->len - 12; + const size_t frag_off = p - ( cur->p + 12 ); + const size_t rem_len = hs_len - frag_off; + size_t cur_hs_frag_len, max_hs_frag_len; - ssl->handshake->cur_msg = cur->next; + if( ( max_frag_len < 12 ) || ( max_frag_len == 12 && hs_len != 0 ) ) + { + if( is_finished ) + ssl_swap_epochs( ssl ); - MBEDTLS_SSL_DEBUG_BUF( 3, "resent handshake message header", ssl->out_msg, 12 ); + if( ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 ) + return( ret ); + + continue; + } + max_hs_frag_len = max_frag_len - 12; + + cur_hs_frag_len = rem_len > max_hs_frag_len ? + max_hs_frag_len : rem_len; + + if( frag_off == 0 && cur_hs_frag_len != hs_len ) + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "fragmenting handshake message (%u > %u)", + (unsigned) cur_hs_frag_len, + (unsigned) max_hs_frag_len ) ); + } + + /* Messages are stored with handshake headers as if not fragmented, + * copy beginning of headers then fill fragmentation fields. + * Handshake headers: type(1) len(3) seq(2) f_off(3) f_len(3) */ + memcpy( ssl->out_msg, cur->p, 6 ); + + ssl->out_msg[6] = ( ( frag_off >> 16 ) & 0xff ); + ssl->out_msg[7] = ( ( frag_off >> 8 ) & 0xff ); + ssl->out_msg[8] = ( ( frag_off ) & 0xff ); + + ssl->out_msg[ 9] = ( ( cur_hs_frag_len >> 16 ) & 0xff ); + ssl->out_msg[10] = ( ( cur_hs_frag_len >> 8 ) & 0xff ); + ssl->out_msg[11] = ( ( cur_hs_frag_len ) & 0xff ); + + MBEDTLS_SSL_DEBUG_BUF( 3, "handshake header", ssl->out_msg, 12 ); + + /* Copy the handshake message content and set records fields */ + memcpy( ssl->out_msg + 12, p, cur_hs_frag_len ); + ssl->out_msglen = cur_hs_frag_len + 12; + ssl->out_msgtype = cur->type; + + /* Update position inside current message */ + ssl->handshake->cur_msg_p += cur_hs_frag_len; + } + + /* If done with the current message move to the next one if any */ + if( ssl->handshake->cur_msg_p >= cur->p + cur->len ) + { + if( cur->next != NULL ) + { + ssl->handshake->cur_msg = cur->next; + ssl->handshake->cur_msg_p = cur->next->p + 12; + } + else + { + ssl->handshake->cur_msg = NULL; + ssl->handshake->cur_msg_p = NULL; + } + } - if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 ) + /* Actually send the message out */ + if( ( ret = mbedtls_ssl_write_record( ssl, force_flush ) ) != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret ); return( ret ); } } + if( ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 ) + return( ret ); + + /* Update state and set timer */ if( ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER ) ssl->handshake->retransmit_state = MBEDTLS_SSL_RETRANS_FINISHED; else @@ -2878,7 +3095,7 @@ int mbedtls_ssl_resend( mbedtls_ssl_context *ssl ) ssl_set_timer( ssl, ssl->handshake->retransmit_timeout ); } - MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= mbedtls_ssl_resend" ) ); + MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= mbedtls_ssl_flight_transmit" ) ); return( 0 ); } @@ -2896,6 +3113,12 @@ void mbedtls_ssl_recv_flight_completed( mbedtls_ssl_context *ssl ) /* The next incoming flight will start with this msg_seq */ ssl->handshake->in_flight_start_seq = ssl->handshake->in_msg_seq; + /* We don't want to remember CCS's across flight boundaries. */ + ssl->handshake->buffering.seen_ccs = 0; + + /* Clear future message buffering structure. */ + ssl_buffering_free( ssl ); + /* Cancel timer */ ssl_set_timer( ssl, 0 ); @@ -2927,43 +3150,102 @@ void mbedtls_ssl_send_flight_completed( mbedtls_ssl_context *ssl ) #endif /* MBEDTLS_SSL_PROTO_DTLS */ /* - * Record layer functions + * Handshake layer functions */ /* - * Write current record. - * Uses ssl->out_msgtype, ssl->out_msglen and bytes at ssl->out_msg. + * Write (DTLS: or queue) current handshake (including CCS) message. + * + * - fill in handshake headers + * - update handshake checksum + * - DTLS: save message for resending + * - then pass to the record layer + * + * DTLS: except for HelloRequest, messages are only queued, and will only be + * actually sent when calling flight_transmit() or resend(). + * + * Inputs: + * - ssl->out_msglen: 4 + actual handshake message len + * (4 is the size of handshake headers for TLS) + * - ssl->out_msg[0]: the handshake type (ClientHello, ServerHello, etc) + * - ssl->out_msg + 4: the handshake message body + * + * Outputs, ie state before passing to flight_append() or write_record(): + * - ssl->out_msglen: the length of the record contents + * (including handshake headers but excluding record headers) + * - ssl->out_msg: the record contents (handshake headers + content) */ -int mbedtls_ssl_write_record( mbedtls_ssl_context *ssl ) +int mbedtls_ssl_write_handshake_msg( mbedtls_ssl_context *ssl ) { - int ret, done = 0, out_msg_type; - size_t len = ssl->out_msglen; + int ret; + const size_t hs_len = ssl->out_msglen - 4; + const unsigned char hs_type = ssl->out_msg[0]; - MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write record" ) ); + MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write handshake message" ) ); + + /* + * Sanity checks + */ + if( ssl->out_msgtype != MBEDTLS_SSL_MSG_HANDSHAKE && + ssl->out_msgtype != MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC ) + { + /* In SSLv3, the client might send a NoCertificate alert. */ +#if defined(MBEDTLS_SSL_PROTO_SSL3) && defined(MBEDTLS_SSL_CLI_C) + if( ! ( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 && + ssl->out_msgtype == MBEDTLS_SSL_MSG_ALERT && + ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT ) ) +#endif /* MBEDTLS_SSL_PROTO_SSL3 && MBEDTLS_SSL_SRV_C */ + { + MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); + return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); + } + } + + /* Whenever we send anything different from a + * HelloRequest we should be in a handshake - double check. */ + if( ! ( ssl->out_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE && + hs_type == MBEDTLS_SSL_HS_HELLO_REQUEST ) && + ssl->handshake == NULL ) + { + MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); + return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); + } #if defined(MBEDTLS_SSL_PROTO_DTLS) if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM && ssl->handshake != NULL && ssl->handshake->retransmit_state == MBEDTLS_SSL_RETRANS_SENDING ) { - ; /* Skip special handshake treatment when resending */ + MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); + return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); } - else #endif - if( ssl->out_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE ) - { - out_msg_type = ssl->out_msg[0]; - if( out_msg_type != MBEDTLS_SSL_HS_HELLO_REQUEST && - ssl->handshake == NULL ) - { - MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); - return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); - } + /* Double-check that we did not exceed the bounds + * of the outgoing record buffer. + * This should never fail as the various message + * writing functions must obey the bounds of the + * outgoing record buffer, but better be safe. + * + * Note: We deliberately do not check for the MTU or MFL here. + */ + if( ssl->out_msglen > MBEDTLS_SSL_OUT_CONTENT_LEN ) + { + MBEDTLS_SSL_DEBUG_MSG( 1, ( "Record too large: " + "size %u, maximum %u", + (unsigned) ssl->out_msglen, + (unsigned) MBEDTLS_SSL_OUT_CONTENT_LEN ) ); + return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); + } - ssl->out_msg[1] = (unsigned char)( ( len - 4 ) >> 16 ); - ssl->out_msg[2] = (unsigned char)( ( len - 4 ) >> 8 ); - ssl->out_msg[3] = (unsigned char)( ( len - 4 ) ); + /* + * Fill handshake headers + */ + if( ssl->out_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE ) + { + ssl->out_msg[1] = (unsigned char)( hs_len >> 16 ); + ssl->out_msg[2] = (unsigned char)( hs_len >> 8 ); + ssl->out_msg[3] = (unsigned char)( hs_len ); /* * DTLS has additional fields in the Handshake layer, @@ -2980,17 +3262,16 @@ int mbedtls_ssl_write_record( mbedtls_ssl_context *ssl ) { MBEDTLS_SSL_DEBUG_MSG( 1, ( "DTLS handshake message too large: " "size %u, maximum %u", - (unsigned) ( ssl->in_hslen - 4 ), + (unsigned) ( hs_len ), (unsigned) ( MBEDTLS_SSL_OUT_CONTENT_LEN - 12 ) ) ); return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); } - memmove( ssl->out_msg + 12, ssl->out_msg + 4, len - 4 ); + memmove( ssl->out_msg + 12, ssl->out_msg + 4, hs_len ); ssl->out_msglen += 8; - len += 8; /* Write message_seq and update it, except for HelloRequest */ - if( out_msg_type != MBEDTLS_SSL_HS_HELLO_REQUEST ) + if( hs_type != MBEDTLS_SSL_HS_HELLO_REQUEST ) { ssl->out_msg[4] = ( ssl->handshake->out_msg_seq >> 8 ) & 0xFF; ssl->out_msg[5] = ( ssl->handshake->out_msg_seq ) & 0xFF; @@ -3002,23 +3283,23 @@ int mbedtls_ssl_write_record( mbedtls_ssl_context *ssl ) ssl->out_msg[5] = 0; } - /* We don't fragment, so frag_offset = 0 and frag_len = len */ + /* Handshake hashes are computed without fragmentation, + * so set frag_offset = 0 and frag_len = hs_len for now */ memset( ssl->out_msg + 6, 0x00, 3 ); memcpy( ssl->out_msg + 9, ssl->out_msg + 1, 3 ); } #endif /* MBEDTLS_SSL_PROTO_DTLS */ - if( out_msg_type != MBEDTLS_SSL_HS_HELLO_REQUEST ) - ssl->handshake->update_checksum( ssl, ssl->out_msg, len ); + /* Update running hashes of handshake messages seen */ + if( hs_type != MBEDTLS_SSL_HS_HELLO_REQUEST ) + ssl->handshake->update_checksum( ssl, ssl->out_msg, ssl->out_msglen ); } - /* Save handshake and CCS messages for resending */ + /* Either send now, or just save to be sent (and resent) later */ #if defined(MBEDTLS_SSL_PROTO_DTLS) if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM && - ssl->handshake != NULL && - ssl->handshake->retransmit_state != MBEDTLS_SSL_RETRANS_SENDING && - ( ssl->out_msgtype == MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC || - ssl->out_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE ) ) + ! ( ssl->out_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE && + hs_type == MBEDTLS_SSL_HS_HELLO_REQUEST ) ) { if( ( ret = ssl_flight_append( ssl ) ) != 0 ) { @@ -3026,7 +3307,40 @@ int mbedtls_ssl_write_record( mbedtls_ssl_context *ssl ) return( ret ); } } + else #endif + { + if( ( ret = mbedtls_ssl_write_record( ssl, SSL_FORCE_FLUSH ) ) != 0 ) + { + MBEDTLS_SSL_DEBUG_RET( 1, "ssl_write_record", ret ); + return( ret ); + } + } + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write handshake message" ) ); + + return( 0 ); +} + +/* + * Record layer functions + */ + +/* + * Write current record. + * + * Uses: + * - ssl->out_msgtype: type of the message (AppData, Handshake, Alert, CCS) + * - ssl->out_msglen: length of the record content (excl headers) + * - ssl->out_msg: record content + */ +int mbedtls_ssl_write_record( mbedtls_ssl_context *ssl, uint8_t force_flush ) +{ + int ret, done = 0; + size_t len = ssl->out_msglen; + uint8_t flush = force_flush; + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write record" ) ); #if defined(MBEDTLS_ZLIB_SUPPORT) if( ssl->transform_out != NULL && @@ -3060,10 +3374,14 @@ int mbedtls_ssl_write_record( mbedtls_ssl_context *ssl ) #endif /* MBEDTLS_SSL_HW_RECORD_ACCEL */ if( !done ) { + unsigned i; + size_t protected_record_size; + ssl->out_hdr[0] = (unsigned char) ssl->out_msgtype; mbedtls_ssl_write_version( ssl->major_ver, ssl->minor_ver, ssl->conf->transport, ssl->out_hdr + 1 ); + memcpy( ssl->out_ctr, ssl->cur_out_ctr, 8 ); ssl->out_len[0] = (unsigned char)( len >> 8 ); ssl->out_len[1] = (unsigned char)( len ); @@ -3080,18 +3398,76 @@ int mbedtls_ssl_write_record( mbedtls_ssl_context *ssl ) ssl->out_len[1] = (unsigned char)( len ); } - ssl->out_left = mbedtls_ssl_hdr_len( ssl ) + ssl->out_msglen; + protected_record_size = len + mbedtls_ssl_hdr_len( ssl ); + +#if defined(MBEDTLS_SSL_PROTO_DTLS) + /* In case of DTLS, double-check that we don't exceed + * the remaining space in the datagram. */ + if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM ) + { + ret = ssl_get_remaining_space_in_datagram( ssl ); + if( ret < 0 ) + return( ret ); + + if( protected_record_size > (size_t) ret ) + { + /* Should never happen */ + return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); + } + } +#endif /* MBEDTLS_SSL_PROTO_DTLS */ MBEDTLS_SSL_DEBUG_MSG( 3, ( "output record: msgtype = %d, " - "version = [%d:%d], msglen = %d", - ssl->out_hdr[0], ssl->out_hdr[1], ssl->out_hdr[2], - ( ssl->out_len[0] << 8 ) | ssl->out_len[1] ) ); + "version = [%d:%d], msglen = %d", + ssl->out_hdr[0], ssl->out_hdr[1], + ssl->out_hdr[2], len ) ); MBEDTLS_SSL_DEBUG_BUF( 4, "output record sent to network", - ssl->out_hdr, mbedtls_ssl_hdr_len( ssl ) + ssl->out_msglen ); + ssl->out_hdr, protected_record_size ); + + ssl->out_left += protected_record_size; + ssl->out_hdr += protected_record_size; + ssl_update_out_pointers( ssl, ssl->transform_out ); + + for( i = 8; i > ssl_ep_len( ssl ); i-- ) + if( ++ssl->cur_out_ctr[i - 1] != 0 ) + break; + + /* The loop goes to its end iff the counter is wrapping */ + if( i == ssl_ep_len( ssl ) ) + { + MBEDTLS_SSL_DEBUG_MSG( 1, ( "outgoing message counter would wrap" ) ); + return( MBEDTLS_ERR_SSL_COUNTER_WRAPPING ); + } } - if( ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 ) +#if defined(MBEDTLS_SSL_PROTO_DTLS) + if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM && + flush == SSL_DONT_FORCE_FLUSH ) + { + size_t remaining; + ret = ssl_get_remaining_payload_in_datagram( ssl ); + if( ret < 0 ) + { + MBEDTLS_SSL_DEBUG_RET( 1, "ssl_get_remaining_payload_in_datagram", + ret ); + return( ret ); + } + + remaining = (size_t) ret; + if( remaining == 0 ) + { + flush = SSL_FORCE_FLUSH; + } + else + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Still %u bytes available in current datagram", (unsigned) remaining ) ); + } + } +#endif /* MBEDTLS_SSL_PROTO_DTLS */ + + if( ( flush == SSL_FORCE_FLUSH ) && + ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_flush_output", ret ); return( ret ); @@ -3103,6 +3479,52 @@ int mbedtls_ssl_write_record( mbedtls_ssl_context *ssl ) } #if defined(MBEDTLS_SSL_PROTO_DTLS) + +static int ssl_hs_is_proper_fragment( mbedtls_ssl_context *ssl ) +{ + if( ssl->in_msglen < ssl->in_hslen || + memcmp( ssl->in_msg + 6, "\0\0\0", 3 ) != 0 || + memcmp( ssl->in_msg + 9, ssl->in_msg + 1, 3 ) != 0 ) + { + return( 1 ); + } + return( 0 ); +} + +static uint32_t ssl_get_hs_frag_len( mbedtls_ssl_context const *ssl ) +{ + return( ( ssl->in_msg[9] << 16 ) | + ( ssl->in_msg[10] << 8 ) | + ssl->in_msg[11] ); +} + +static uint32_t ssl_get_hs_frag_off( mbedtls_ssl_context const *ssl ) +{ + return( ( ssl->in_msg[6] << 16 ) | + ( ssl->in_msg[7] << 8 ) | + ssl->in_msg[8] ); +} + +static int ssl_check_hs_header( mbedtls_ssl_context const *ssl ) +{ + uint32_t msg_len, frag_off, frag_len; + + msg_len = ssl_get_hs_total_len( ssl ); + frag_off = ssl_get_hs_frag_off( ssl ); + frag_len = ssl_get_hs_frag_len( ssl ); + + if( frag_off > msg_len ) + return( -1 ); + + if( frag_len > msg_len - frag_off ) + return( -1 ); + + if( frag_len + 12 > ssl->in_msglen ) + return( -1 ); + + return( 0 ); +} + /* * Mark bits in bitmask (used for DTLS HS reassembly) */ @@ -3164,161 +3586,29 @@ static int ssl_bitmask_check( unsigned char *mask, size_t len ) return( 0 ); } -/* - * Reassemble fragmented DTLS handshake messages. - * - * Use a temporary buffer for reassembly, divided in two parts: - * - the first holds the reassembled message (including handshake header), - * - the second holds a bitmask indicating which parts of the message - * (excluding headers) have been received so far. - */ -static int ssl_reassemble_dtls_handshake( mbedtls_ssl_context *ssl ) +/* msg_len does not include the handshake header */ +static size_t ssl_get_reassembly_buffer_size( size_t msg_len, + unsigned add_bitmap ) { - unsigned char *msg, *bitmask; - size_t frag_len, frag_off; - size_t msg_len = ssl->in_hslen - 12; /* Without headers */ - - if( ssl->handshake == NULL ) - { - MBEDTLS_SSL_DEBUG_MSG( 1, ( "not supported outside handshake (for now)" ) ); - return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE ); - } - - /* - * For first fragment, check size and allocate buffer - */ - if( ssl->handshake->hs_msg == NULL ) - { - size_t alloc_len; - - MBEDTLS_SSL_DEBUG_MSG( 2, ( "initialize reassembly, total length = %d", - msg_len ) ); - - if( ssl->in_hslen > MBEDTLS_SSL_IN_CONTENT_LEN ) - { - MBEDTLS_SSL_DEBUG_MSG( 1, ( "handshake message too large" ) ); - return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE ); - } - - /* The bitmask needs one bit per byte of message excluding header */ - alloc_len = 12 + msg_len + msg_len / 8 + ( msg_len % 8 != 0 ); - - ssl->handshake->hs_msg = mbedtls_calloc( 1, alloc_len ); - if( ssl->handshake->hs_msg == NULL ) - { - MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc failed (%d bytes)", alloc_len ) ); - return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); - } - - /* Prepare final header: copy msg_type, length and message_seq, - * then add standardised fragment_offset and fragment_length */ - memcpy( ssl->handshake->hs_msg, ssl->in_msg, 6 ); - memset( ssl->handshake->hs_msg + 6, 0, 3 ); - memcpy( ssl->handshake->hs_msg + 9, - ssl->handshake->hs_msg + 1, 3 ); - } - else - { - /* Make sure msg_type and length are consistent */ - if( memcmp( ssl->handshake->hs_msg, ssl->in_msg, 4 ) != 0 ) - { - MBEDTLS_SSL_DEBUG_MSG( 1, ( "fragment header mismatch" ) ); - return( MBEDTLS_ERR_SSL_INVALID_RECORD ); - } - } - - msg = ssl->handshake->hs_msg + 12; - bitmask = msg + msg_len; - - /* - * Check and copy current fragment - */ - frag_off = ( ssl->in_msg[6] << 16 ) | - ( ssl->in_msg[7] << 8 ) | - ssl->in_msg[8]; - frag_len = ( ssl->in_msg[9] << 16 ) | - ( ssl->in_msg[10] << 8 ) | - ssl->in_msg[11]; - - if( frag_off + frag_len > msg_len ) - { - MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid fragment offset/len: %d + %d > %d", - frag_off, frag_len, msg_len ) ); - return( MBEDTLS_ERR_SSL_INVALID_RECORD ); - } - - if( frag_len + 12 > ssl->in_msglen ) - { - MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid fragment length: %d + 12 > %d", - frag_len, ssl->in_msglen ) ); - return( MBEDTLS_ERR_SSL_INVALID_RECORD ); - } - - MBEDTLS_SSL_DEBUG_MSG( 2, ( "adding fragment, offset = %d, length = %d", - frag_off, frag_len ) ); - - memcpy( msg + frag_off, ssl->in_msg + 12, frag_len ); - ssl_bitmask_set( bitmask, frag_off, frag_len ); - - /* - * Do we have the complete message by now? - * If yes, finalize it, else ask to read the next record. - */ - if( ssl_bitmask_check( bitmask, msg_len ) != 0 ) - { - MBEDTLS_SSL_DEBUG_MSG( 2, ( "message is not complete yet" ) ); - return( MBEDTLS_ERR_SSL_CONTINUE_PROCESSING ); - } - - MBEDTLS_SSL_DEBUG_MSG( 2, ( "handshake message completed" ) ); - - if( frag_len + 12 < ssl->in_msglen ) - { - /* - * We'got more handshake messages in the same record. - * This case is not handled now because no know implementation does - * that and it's hard to test, so we prefer to fail cleanly for now. - */ - MBEDTLS_SSL_DEBUG_MSG( 1, ( "last fragment not alone in its record" ) ); - return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE ); - } - - if( ssl->in_left > ssl->next_record_offset ) - { - /* - * We've got more data in the buffer after the current record, - * that we don't want to overwrite. Move it before writing the - * reassembled message, and adjust in_left and next_record_offset. - */ - unsigned char *cur_remain = ssl->in_hdr + ssl->next_record_offset; - unsigned char *new_remain = ssl->in_msg + ssl->in_hslen; - size_t remain_len = ssl->in_left - ssl->next_record_offset; - - /* First compute and check new lengths */ - ssl->next_record_offset = new_remain - ssl->in_hdr; - ssl->in_left = ssl->next_record_offset + remain_len; - - if( ssl->in_left > MBEDTLS_SSL_IN_BUFFER_LEN - - (size_t)( ssl->in_hdr - ssl->in_buf ) ) - { - MBEDTLS_SSL_DEBUG_MSG( 1, ( "reassembled message too large for buffer" ) ); - return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL ); - } + size_t alloc_len; - memmove( new_remain, cur_remain, remain_len ); - } + alloc_len = 12; /* Handshake header */ + alloc_len += msg_len; /* Content buffer */ - memcpy( ssl->in_msg, ssl->handshake->hs_msg, ssl->in_hslen ); + if( add_bitmap ) + alloc_len += msg_len / 8 + ( msg_len % 8 != 0 ); /* Bitmap */ - mbedtls_free( ssl->handshake->hs_msg ); - ssl->handshake->hs_msg = NULL; + return( alloc_len ); +} - MBEDTLS_SSL_DEBUG_BUF( 3, "reassembled handshake message", - ssl->in_msg, ssl->in_hslen ); +#endif /* MBEDTLS_SSL_PROTO_DTLS */ - return( 0 ); +static uint32_t ssl_get_hs_total_len( mbedtls_ssl_context const *ssl ) +{ + return( ( ssl->in_msg[1] << 16 ) | + ( ssl->in_msg[2] << 8 ) | + ssl->in_msg[3] ); } -#endif /* MBEDTLS_SSL_PROTO_DTLS */ int mbedtls_ssl_prepare_handshake_record( mbedtls_ssl_context *ssl ) { @@ -3329,10 +3619,7 @@ int mbedtls_ssl_prepare_handshake_record( mbedtls_ssl_context *ssl ) return( MBEDTLS_ERR_SSL_INVALID_RECORD ); } - ssl->in_hslen = mbedtls_ssl_hs_hdr_len( ssl ) + ( - ( ssl->in_msg[1] << 16 ) | - ( ssl->in_msg[2] << 8 ) | - ssl->in_msg[3] ); + ssl->in_hslen = mbedtls_ssl_hs_hdr_len( ssl ) + ssl_get_hs_total_len( ssl ); MBEDTLS_SSL_DEBUG_MSG( 3, ( "handshake message: msglen =" " %d, type = %d, hslen = %d", @@ -3344,12 +3631,26 @@ int mbedtls_ssl_prepare_handshake_record( mbedtls_ssl_context *ssl ) int ret; unsigned int recv_msg_seq = ( ssl->in_msg[4] << 8 ) | ssl->in_msg[5]; + if( ssl_check_hs_header( ssl ) != 0 ) + { + MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid handshake header" ) ); + return( MBEDTLS_ERR_SSL_INVALID_RECORD ); + } + if( ssl->handshake != NULL && ( ( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER && recv_msg_seq != ssl->handshake->in_msg_seq ) || ( ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER && ssl->in_msg[0] != MBEDTLS_SSL_HS_CLIENT_HELLO ) ) ) { + if( recv_msg_seq > ssl->handshake->in_msg_seq ) + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "received future handshake message of sequence number %u (next %u)", + recv_msg_seq, + ssl->handshake->in_msg_seq ) ); + return( MBEDTLS_ERR_SSL_EARLY_MESSAGE ); + } + /* Retransmit only on last message from previous flight, to avoid * too many retransmissions. * Besides, No sane server ever retransmits HelloVerifyRequest */ @@ -3379,20 +3680,14 @@ int mbedtls_ssl_prepare_handshake_record( mbedtls_ssl_context *ssl ) } /* Wait until message completion to increment in_msg_seq */ - /* Reassemble if current message is fragmented or reassembly is - * already in progress */ - if( ssl->in_msglen < ssl->in_hslen || - memcmp( ssl->in_msg + 6, "\0\0\0", 3 ) != 0 || - memcmp( ssl->in_msg + 9, ssl->in_msg + 1, 3 ) != 0 || - ( ssl->handshake != NULL && ssl->handshake->hs_msg != NULL ) ) + /* Message reassembly is handled alongside buffering of future + * messages; the commonality is that both handshake fragments and + * future messages cannot be forwarded immediately to the + * handshake logic layer. */ + if( ssl_hs_is_proper_fragment( ssl ) == 1 ) { MBEDTLS_SSL_DEBUG_MSG( 2, ( "found fragmented DTLS handshake message" ) ); - - if( ( ret = ssl_reassemble_dtls_handshake( ssl ) ) != 0 ) - { - MBEDTLS_SSL_DEBUG_RET( 1, "ssl_reassemble_dtls_handshake", ret ); - return( ret ); - } + return( MBEDTLS_ERR_SSL_EARLY_MESSAGE ); } } else @@ -3409,9 +3704,9 @@ int mbedtls_ssl_prepare_handshake_record( mbedtls_ssl_context *ssl ) void mbedtls_ssl_update_handshake_status( mbedtls_ssl_context *ssl ) { + mbedtls_ssl_handshake_params * const hs = ssl->handshake; - if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER && - ssl->handshake != NULL ) + if( ssl->state != MBEDTLS_SSL_HANDSHAKE_OVER && hs != NULL ) { ssl->handshake->update_checksum( ssl, ssl->in_msg, ssl->in_hslen ); } @@ -3421,7 +3716,29 @@ void mbedtls_ssl_update_handshake_status( mbedtls_ssl_context *ssl ) if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM && ssl->handshake != NULL ) { - ssl->handshake->in_msg_seq++; + unsigned offset; + mbedtls_ssl_hs_buffer *hs_buf; + + /* Increment handshake sequence number */ + hs->in_msg_seq++; + + /* + * Clear up handshake buffering and reassembly structure. + */ + + /* Free first entry */ + ssl_buffering_free_slot( ssl, 0 ); + + /* Shift all other entries */ + for( offset = 0, hs_buf = &hs->buffering.hs[0]; + offset + 1 < MBEDTLS_SSL_MAX_BUFFERED_HS; + offset++, hs_buf++ ) + { + *hs_buf = *(hs_buf + 1); + } + + /* Create a fresh last entry */ + memset( hs_buf, 0, sizeof( mbedtls_ssl_hs_buffer ) ); } #endif } @@ -3822,7 +4139,16 @@ static int ssl_parse_record_header( mbedtls_ssl_context *ssl ) } else #endif /* MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE && MBEDTLS_SSL_SRV_C */ + { + /* Consider buffering the record. */ + if( rec_epoch == (unsigned int) ssl->in_epoch + 1 ) + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Consider record for buffering" ) ); + return( MBEDTLS_ERR_SSL_EARLY_MESSAGE ); + } + return( MBEDTLS_ERR_SSL_UNEXPECTED_RECORD ); + } } #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY) @@ -3835,15 +4161,6 @@ static int ssl_parse_record_header( mbedtls_ssl_context *ssl ) } #endif - /* Drop unexpected ChangeCipherSpec messages */ - if( ssl->in_msgtype == MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC && - ssl->state != MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC && - ssl->state != MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC ) - { - MBEDTLS_SSL_DEBUG_MSG( 1, ( "dropping unexpected ChangeCipherSpec" ) ); - return( MBEDTLS_ERR_SSL_UNEXPECTED_RECORD ); - } - /* Drop unexpected ApplicationData records, * except at the beginning of renegotiations */ if( ssl->in_msgtype == MBEDTLS_SSL_MSG_APPLICATION_DATA && @@ -3980,7 +4297,14 @@ static void ssl_handshake_wrapup_free_hs_transform( mbedtls_ssl_context *ssl ); * RFC 6347 4.1.2.7) and continue reading until a valid record is found. * */ -int mbedtls_ssl_read_record( mbedtls_ssl_context *ssl ) + +/* Helper functions for mbedtls_ssl_read_record(). */ +static int ssl_consume_current_message( mbedtls_ssl_context *ssl ); +static int ssl_get_next_record( mbedtls_ssl_context *ssl ); +static int ssl_record_is_in_progress( mbedtls_ssl_context *ssl ); + +int mbedtls_ssl_read_record( mbedtls_ssl_context *ssl, + unsigned update_hs_digest ) { int ret; @@ -3990,17 +4314,53 @@ int mbedtls_ssl_read_record( mbedtls_ssl_context *ssl ) { do { - do ret = mbedtls_ssl_read_record_layer( ssl ); - while( ret == MBEDTLS_ERR_SSL_CONTINUE_PROCESSING ); - + ret = ssl_consume_current_message( ssl ); if( ret != 0 ) - { - MBEDTLS_SSL_DEBUG_RET( 1, ( "mbedtls_ssl_read_record_layer" ), ret ); return( ret ); + + if( ssl_record_is_in_progress( ssl ) == 0 ) + { +#if defined(MBEDTLS_SSL_PROTO_DTLS) + int have_buffered = 0; + + /* We only check for buffered messages if the + * current datagram is fully consumed. */ + if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM && + ssl_next_record_is_in_datagram( ssl ) == 0 ) + { + if( ssl_load_buffered_message( ssl ) == 0 ) + have_buffered = 1; + } + + if( have_buffered == 0 ) +#endif /* MBEDTLS_SSL_PROTO_DTLS */ + { + ret = ssl_get_next_record( ssl ); + if( ret == MBEDTLS_ERR_SSL_CONTINUE_PROCESSING ) + continue; + + if( ret != 0 ) + { + MBEDTLS_SSL_DEBUG_RET( 1, ( "ssl_get_next_record" ), ret ); + return( ret ); + } + } } ret = mbedtls_ssl_handle_message_type( ssl ); +#if defined(MBEDTLS_SSL_PROTO_DTLS) + if( ret == MBEDTLS_ERR_SSL_EARLY_MESSAGE ) + { + /* Buffer future message */ + ret = ssl_buffer_message( ssl ); + if( ret != 0 ) + return( ret ); + + ret = MBEDTLS_ERR_SSL_CONTINUE_PROCESSING; + } +#endif /* MBEDTLS_SSL_PROTO_DTLS */ + } while( MBEDTLS_ERR_SSL_NON_FATAL == ret || MBEDTLS_ERR_SSL_CONTINUE_PROCESSING == ret ); @@ -4010,14 +4370,15 @@ int mbedtls_ssl_read_record( mbedtls_ssl_context *ssl ) return( ret ); } - if( ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE ) + if( ssl->in_msgtype == MBEDTLS_SSL_MSG_HANDSHAKE && + update_hs_digest == 1 ) { mbedtls_ssl_update_handshake_status( ssl ); } } else { - MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= reuse previously read message" ) ); + MBEDTLS_SSL_DEBUG_MSG( 2, ( "reuse previously read message" ) ); ssl->keep_current_message = 0; } @@ -4026,13 +4387,350 @@ int mbedtls_ssl_read_record( mbedtls_ssl_context *ssl ) return( 0 ); } -int mbedtls_ssl_read_record_layer( mbedtls_ssl_context *ssl ) +#if defined(MBEDTLS_SSL_PROTO_DTLS) +static int ssl_next_record_is_in_datagram( mbedtls_ssl_context *ssl ) { - int ret; + if( ssl->in_left > ssl->next_record_offset ) + return( 1 ); + + return( 0 ); +} + +static int ssl_load_buffered_message( mbedtls_ssl_context *ssl ) +{ + mbedtls_ssl_handshake_params * const hs = ssl->handshake; + mbedtls_ssl_hs_buffer * hs_buf; + int ret = 0; + + if( hs == NULL ) + return( -1 ); + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> ssl_load_buffered_messsage" ) ); + + if( ssl->state == MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC || + ssl->state == MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC ) + { + /* Check if we have seen a ChangeCipherSpec before. + * If yes, synthesize a CCS record. */ + if( !hs->buffering.seen_ccs ) + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "CCS not seen in the current flight" ) ); + ret = -1; + goto exit; + } + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Injecting buffered CCS message" ) ); + ssl->in_msgtype = MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC; + ssl->in_msglen = 1; + ssl->in_msg[0] = 1; + + /* As long as they are equal, the exact value doesn't matter. */ + ssl->in_left = 0; + ssl->next_record_offset = 0; + + hs->buffering.seen_ccs = 0; + goto exit; + } + +#if defined(MBEDTLS_DEBUG_C) + /* Debug only */ + { + unsigned offset; + for( offset = 1; offset < MBEDTLS_SSL_MAX_BUFFERED_HS; offset++ ) + { + hs_buf = &hs->buffering.hs[offset]; + if( hs_buf->is_valid == 1 ) + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Future message with sequence number %u %s buffered.", + hs->in_msg_seq + offset, + hs_buf->is_complete ? "fully" : "partially" ) ); + } + } + } +#endif /* MBEDTLS_DEBUG_C */ + + /* Check if we have buffered and/or fully reassembled the + * next handshake message. */ + hs_buf = &hs->buffering.hs[0]; + if( ( hs_buf->is_valid == 1 ) && ( hs_buf->is_complete == 1 ) ) + { + /* Synthesize a record containing the buffered HS message. */ + size_t msg_len = ( hs_buf->data[1] << 16 ) | + ( hs_buf->data[2] << 8 ) | + hs_buf->data[3]; + + /* Double-check that we haven't accidentally buffered + * a message that doesn't fit into the input buffer. */ + if( msg_len + 12 > MBEDTLS_SSL_IN_CONTENT_LEN ) + { + MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); + return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); + } + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Next handshake message has been buffered - load" ) ); + MBEDTLS_SSL_DEBUG_BUF( 3, "Buffered handshake message (incl. header)", + hs_buf->data, msg_len + 12 ); + + ssl->in_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE; + ssl->in_hslen = msg_len + 12; + ssl->in_msglen = msg_len + 12; + memcpy( ssl->in_msg, hs_buf->data, ssl->in_hslen ); + + ret = 0; + goto exit; + } + else + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Next handshake message %u not or only partially bufffered", + hs->in_msg_seq ) ); + } + + ret = -1; + +exit: + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= ssl_load_buffered_message" ) ); + return( ret ); +} + +static int ssl_buffer_make_space( mbedtls_ssl_context *ssl, + size_t desired ) +{ + int offset; + mbedtls_ssl_handshake_params * const hs = ssl->handshake; + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Attempt to free buffered messages to have %u bytes available", + (unsigned) desired ) ); + + /* Get rid of future records epoch first, if such exist. */ + ssl_free_buffered_record( ssl ); + + /* Check if we have enough space available now. */ + if( desired <= ( MBEDTLS_SSL_DTLS_MAX_BUFFERING - + hs->buffering.total_bytes_buffered ) ) + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Enough space available after freeing future epoch record" ) ); + return( 0 ); + } + + /* We don't have enough space to buffer the next expected handshake + * message. Remove buffers used for future messages to gain space, + * starting with the most distant one. */ + for( offset = MBEDTLS_SSL_MAX_BUFFERED_HS - 1; + offset >= 0; offset-- ) + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Free buffering slot %d to make space for reassembly of next handshake message", + offset ) ); + + ssl_buffering_free_slot( ssl, (uint8_t) offset ); + + /* Check if we have enough space available now. */ + if( desired <= ( MBEDTLS_SSL_DTLS_MAX_BUFFERING - + hs->buffering.total_bytes_buffered ) ) + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Enough space available after freeing buffered HS messages" ) ); + return( 0 ); + } + } + + return( -1 ); +} + +static int ssl_buffer_message( mbedtls_ssl_context *ssl ) +{ + int ret = 0; + mbedtls_ssl_handshake_params * const hs = ssl->handshake; + + if( hs == NULL ) + return( 0 ); + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> ssl_buffer_message" ) ); + + switch( ssl->in_msgtype ) + { + case MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC: + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Remember CCS message" ) ); + + hs->buffering.seen_ccs = 1; + break; + + case MBEDTLS_SSL_MSG_HANDSHAKE: + { + unsigned recv_msg_seq_offset; + unsigned recv_msg_seq = ( ssl->in_msg[4] << 8 ) | ssl->in_msg[5]; + mbedtls_ssl_hs_buffer *hs_buf; + size_t msg_len = ssl->in_hslen - 12; + + /* We should never receive an old handshake + * message - double-check nonetheless. */ + if( recv_msg_seq < ssl->handshake->in_msg_seq ) + { + MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); + return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); + } + + recv_msg_seq_offset = recv_msg_seq - ssl->handshake->in_msg_seq; + if( recv_msg_seq_offset >= MBEDTLS_SSL_MAX_BUFFERED_HS ) + { + /* Silently ignore -- message too far in the future */ + MBEDTLS_SSL_DEBUG_MSG( 2, + ( "Ignore future HS message with sequence number %u, " + "buffering window %u - %u", + recv_msg_seq, ssl->handshake->in_msg_seq, + ssl->handshake->in_msg_seq + MBEDTLS_SSL_MAX_BUFFERED_HS - 1 ) ); + + goto exit; + } + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Buffering HS message with sequence number %u, offset %u ", + recv_msg_seq, recv_msg_seq_offset ) ); + + hs_buf = &hs->buffering.hs[ recv_msg_seq_offset ]; + + /* Check if the buffering for this seq nr has already commenced. */ + if( !hs_buf->is_valid ) + { + size_t reassembly_buf_sz; + + hs_buf->is_fragmented = + ( ssl_hs_is_proper_fragment( ssl ) == 1 ); + + /* We copy the message back into the input buffer + * after reassembly, so check that it's not too large. + * This is an implementation-specific limitation + * and not one from the standard, hence it is not + * checked in ssl_check_hs_header(). */ + if( msg_len + 12 > MBEDTLS_SSL_IN_CONTENT_LEN ) + { + /* Ignore message */ + goto exit; + } + /* Check if we have enough space to buffer the message. */ + if( hs->buffering.total_bytes_buffered > + MBEDTLS_SSL_DTLS_MAX_BUFFERING ) + { + MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); + return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); + } + + reassembly_buf_sz = ssl_get_reassembly_buffer_size( msg_len, + hs_buf->is_fragmented ); + + if( reassembly_buf_sz > ( MBEDTLS_SSL_DTLS_MAX_BUFFERING - + hs->buffering.total_bytes_buffered ) ) + { + if( recv_msg_seq_offset > 0 ) + { + /* If we can't buffer a future message because + * of space limitations -- ignore. */ + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Buffering of future message of size %u would exceed the compile-time limit %u (already %u bytes buffered) -- ignore\n", + (unsigned) msg_len, MBEDTLS_SSL_DTLS_MAX_BUFFERING, + (unsigned) hs->buffering.total_bytes_buffered ) ); + goto exit; + } + else + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Buffering of future message of size %u would exceed the compile-time limit %u (already %u bytes buffered) -- attempt to make space by freeing buffered future messages\n", + (unsigned) msg_len, MBEDTLS_SSL_DTLS_MAX_BUFFERING, + (unsigned) hs->buffering.total_bytes_buffered ) ); + } + + if( ssl_buffer_make_space( ssl, reassembly_buf_sz ) != 0 ) + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Reassembly of next message of size %u (%u with bitmap) would exceed the compile-time limit %u (already %u bytes buffered) -- fail\n", + (unsigned) msg_len, + (unsigned) reassembly_buf_sz, + MBEDTLS_SSL_DTLS_MAX_BUFFERING, + (unsigned) hs->buffering.total_bytes_buffered ) ); + ret = MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL; + goto exit; + } + } + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "initialize reassembly, total length = %d", + msg_len ) ); + + hs_buf->data = mbedtls_calloc( 1, reassembly_buf_sz ); + if( hs_buf->data == NULL ) + { + ret = MBEDTLS_ERR_SSL_ALLOC_FAILED; + goto exit; + } + hs_buf->data_len = reassembly_buf_sz; + + /* Prepare final header: copy msg_type, length and message_seq, + * then add standardised fragment_offset and fragment_length */ + memcpy( hs_buf->data, ssl->in_msg, 6 ); + memset( hs_buf->data + 6, 0, 3 ); + memcpy( hs_buf->data + 9, hs_buf->data + 1, 3 ); + + hs_buf->is_valid = 1; + + hs->buffering.total_bytes_buffered += reassembly_buf_sz; + } + else + { + /* Make sure msg_type and length are consistent */ + if( memcmp( hs_buf->data, ssl->in_msg, 4 ) != 0 ) + { + MBEDTLS_SSL_DEBUG_MSG( 1, ( "Fragment header mismatch - ignore" ) ); + /* Ignore */ + goto exit; + } + } + + if( !hs_buf->is_complete ) + { + size_t frag_len, frag_off; + unsigned char * const msg = hs_buf->data + 12; + + /* + * Check and copy current fragment + */ + + /* Validation of header fields already done in + * mbedtls_ssl_prepare_handshake_record(). */ + frag_off = ssl_get_hs_frag_off( ssl ); + frag_len = ssl_get_hs_frag_len( ssl ); + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "adding fragment, offset = %d, length = %d", + frag_off, frag_len ) ); + memcpy( msg + frag_off, ssl->in_msg + 12, frag_len ); + + if( hs_buf->is_fragmented ) + { + unsigned char * const bitmask = msg + msg_len; + ssl_bitmask_set( bitmask, frag_off, frag_len ); + hs_buf->is_complete = ( ssl_bitmask_check( bitmask, + msg_len ) == 0 ); + } + else + { + hs_buf->is_complete = 1; + } + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "message %scomplete", + hs_buf->is_complete ? "" : "not yet " ) ); + } + + break; + } + + default: + /* We don't buffer other types of messages. */ + break; + } + +exit: + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= ssl_buffer_message" ) ); + return( ret ); +} +#endif /* MBEDTLS_SSL_PROTO_DTLS */ + +static int ssl_consume_current_message( mbedtls_ssl_context *ssl ) +{ /* - * Step A - * * Consume last content-layer message and potentially * update in_msglen which keeps track of the contents' * consumption state. @@ -4114,20 +4812,161 @@ int mbedtls_ssl_read_record_layer( mbedtls_ssl_context *ssl ) ssl->in_msglen = 0; } - /* - * Step B - * - * Fetch and decode new record if current one is fully consumed. - * - */ + return( 0 ); +} +static int ssl_record_is_in_progress( mbedtls_ssl_context *ssl ) +{ if( ssl->in_msglen > 0 ) + return( 1 ); + + return( 0 ); +} + +#if defined(MBEDTLS_SSL_PROTO_DTLS) + +static void ssl_free_buffered_record( mbedtls_ssl_context *ssl ) +{ + mbedtls_ssl_handshake_params * const hs = ssl->handshake; + if( hs == NULL ) + return; + + if( hs->buffering.future_record.data != NULL ) { - /* There's something left to be processed in the current record. */ + hs->buffering.total_bytes_buffered -= + hs->buffering.future_record.len; + + mbedtls_free( hs->buffering.future_record.data ); + hs->buffering.future_record.data = NULL; + } +} + +static int ssl_load_buffered_record( mbedtls_ssl_context *ssl ) +{ + mbedtls_ssl_handshake_params * const hs = ssl->handshake; + unsigned char * rec; + size_t rec_len; + unsigned rec_epoch; + + if( ssl->conf->transport != MBEDTLS_SSL_TRANSPORT_DATAGRAM ) + return( 0 ); + + if( hs == NULL ) + return( 0 ); + + rec = hs->buffering.future_record.data; + rec_len = hs->buffering.future_record.len; + rec_epoch = hs->buffering.future_record.epoch; + + if( rec == NULL ) return( 0 ); + + /* Only consider loading future records if the + * input buffer is empty. */ + if( ssl_next_record_is_in_datagram( ssl ) == 1 ) + return( 0 ); + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> ssl_load_buffered_record" ) ); + + if( rec_epoch != ssl->in_epoch ) + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Buffered record not from current epoch." ) ); + goto exit; } - /* Current record either fully processed or to be discarded. */ + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Found buffered record from current epoch - load" ) ); + + /* Double-check that the record is not too large */ + if( rec_len > MBEDTLS_SSL_IN_BUFFER_LEN - + (size_t)( ssl->in_hdr - ssl->in_buf ) ) + { + MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); + return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); + } + + memcpy( ssl->in_hdr, rec, rec_len ); + ssl->in_left = rec_len; + ssl->next_record_offset = 0; + + ssl_free_buffered_record( ssl ); + +exit: + MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= ssl_load_buffered_record" ) ); + return( 0 ); +} + +static int ssl_buffer_future_record( mbedtls_ssl_context *ssl ) +{ + mbedtls_ssl_handshake_params * const hs = ssl->handshake; + size_t const rec_hdr_len = 13; + size_t const total_buf_sz = rec_hdr_len + ssl->in_msglen; + + /* Don't buffer future records outside handshakes. */ + if( hs == NULL ) + return( 0 ); + + /* Only buffer handshake records (we are only interested + * in Finished messages). */ + if( ssl->in_msgtype != MBEDTLS_SSL_MSG_HANDSHAKE ) + return( 0 ); + + /* Don't buffer more than one future epoch record. */ + if( hs->buffering.future_record.data != NULL ) + return( 0 ); + + /* Don't buffer record if there's not enough buffering space remaining. */ + if( total_buf_sz > ( MBEDTLS_SSL_DTLS_MAX_BUFFERING - + hs->buffering.total_bytes_buffered ) ) + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Buffering of future epoch record of size %u would exceed the compile-time limit %u (already %u bytes buffered) -- ignore\n", + (unsigned) total_buf_sz, MBEDTLS_SSL_DTLS_MAX_BUFFERING, + (unsigned) hs->buffering.total_bytes_buffered ) ); + return( 0 ); + } + + /* Buffer record */ + MBEDTLS_SSL_DEBUG_MSG( 2, ( "Buffer record from epoch %u", + ssl->in_epoch + 1 ) ); + MBEDTLS_SSL_DEBUG_BUF( 3, "Buffered record", ssl->in_hdr, + rec_hdr_len + ssl->in_msglen ); + + /* ssl_parse_record_header() only considers records + * of the next epoch as candidates for buffering. */ + hs->buffering.future_record.epoch = ssl->in_epoch + 1; + hs->buffering.future_record.len = total_buf_sz; + + hs->buffering.future_record.data = + mbedtls_calloc( 1, hs->buffering.future_record.len ); + if( hs->buffering.future_record.data == NULL ) + { + /* If we run out of RAM trying to buffer a + * record from the next epoch, just ignore. */ + return( 0 ); + } + + memcpy( hs->buffering.future_record.data, ssl->in_hdr, total_buf_sz ); + + hs->buffering.total_bytes_buffered += total_buf_sz; + return( 0 ); +} + +#endif /* MBEDTLS_SSL_PROTO_DTLS */ + +static int ssl_get_next_record( mbedtls_ssl_context *ssl ) +{ + int ret; + +#if defined(MBEDTLS_SSL_PROTO_DTLS) + /* We might have buffered a future record; if so, + * and if the epoch matches now, load it. + * On success, this call will set ssl->in_left to + * the length of the buffered record, so that + * the calls to ssl_fetch_input() below will + * essentially be no-ops. */ + ret = ssl_load_buffered_record( ssl ); + if( ret != 0 ) + return( ret ); +#endif /* MBEDTLS_SSL_PROTO_DTLS */ if( ( ret = mbedtls_ssl_fetch_input( ssl, mbedtls_ssl_hdr_len( ssl ) ) ) != 0 ) { @@ -4141,6 +4980,16 @@ int mbedtls_ssl_read_record_layer( mbedtls_ssl_context *ssl ) if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM && ret != MBEDTLS_ERR_SSL_CLIENT_RECONNECT ) { + if( ret == MBEDTLS_ERR_SSL_EARLY_MESSAGE ) + { + ret = ssl_buffer_future_record( ssl ); + if( ret != 0 ) + return( ret ); + + /* Fall through to handling of unexpected records */ + ret = MBEDTLS_ERR_SSL_UNEXPECTED_RECORD; + } + if( ret == MBEDTLS_ERR_SSL_UNEXPECTED_RECORD ) { /* Skip unexpected record (but not whole datagram) */ @@ -4272,6 +5121,39 @@ int mbedtls_ssl_handle_message_type( mbedtls_ssl_context *ssl ) } } + if( ssl->in_msgtype == MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC ) + { + if( ssl->in_msglen != 1 ) + { + MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid CCS message, len: %d", + ssl->in_msglen ) ); + return( MBEDTLS_ERR_SSL_INVALID_RECORD ); + } + + if( ssl->in_msg[0] != 1 ) + { + MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid CCS message, content: %02x", + ssl->in_msg[0] ) ); + return( MBEDTLS_ERR_SSL_INVALID_RECORD ); + } + +#if defined(MBEDTLS_SSL_PROTO_DTLS) + if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM && + ssl->state != MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC && + ssl->state != MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC ) + { + if( ssl->handshake == NULL ) + { + MBEDTLS_SSL_DEBUG_MSG( 1, ( "dropping ChangeCipherSpec outside handshake" ) ); + return( MBEDTLS_ERR_SSL_UNEXPECTED_RECORD ); + } + + MBEDTLS_SSL_DEBUG_MSG( 1, ( "received out-of-order ChangeCipherSpec - remember" ) ); + return( MBEDTLS_ERR_SSL_EARLY_MESSAGE ); + } +#endif + } + if( ssl->in_msgtype == MBEDTLS_SSL_MSG_ALERT ) { if( ssl->in_msglen != 2 ) @@ -4373,7 +5255,7 @@ int mbedtls_ssl_send_alert_message( mbedtls_ssl_context *ssl, ssl->out_msg[0] = level; ssl->out_msg[1] = message; - if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_write_record( ssl, SSL_FORCE_FLUSH ) ) != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret ); return( ret ); @@ -4542,9 +5424,9 @@ write_msg: ssl->state++; - if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 ) { - MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret ); + MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret ); return( ret ); } @@ -4553,60 +5435,16 @@ write_msg: return( ret ); } -int mbedtls_ssl_parse_certificate( mbedtls_ssl_context *ssl ) +/* + * Once the certificate message is read, parse it into a cert chain and + * perform basic checks, but leave actual verification to the caller + */ +static int ssl_parse_certificate_chain( mbedtls_ssl_context *ssl ) { - int ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE; + int ret; size_t i, n; - const mbedtls_ssl_ciphersuite_t *ciphersuite_info = ssl->transform_negotiate->ciphersuite_info; - int authmode = ssl->conf->authmode; uint8_t alert; - MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse certificate" ) ); - - if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_PSK || - ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_DHE_PSK || - ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDHE_PSK || - ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECJPAKE ) - { - MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip parse certificate" ) ); - ssl->state++; - return( 0 ); - } - -#if defined(MBEDTLS_SSL_SRV_C) - if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER && - ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_RSA_PSK ) - { - MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip parse certificate" ) ); - ssl->state++; - return( 0 ); - } - -#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION) - if( ssl->handshake->sni_authmode != MBEDTLS_SSL_VERIFY_UNSET ) - authmode = ssl->handshake->sni_authmode; -#endif - - if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER && - authmode == MBEDTLS_SSL_VERIFY_NONE ) - { - ssl->session_negotiate->verify_result = MBEDTLS_X509_BADCERT_SKIP_VERIFY; - MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip parse certificate" ) ); - ssl->state++; - return( 0 ); - } -#endif - - if( ( ret = mbedtls_ssl_read_record( ssl ) ) != 0 ) - { - /* mbedtls_ssl_read_record may have sent an alert already. We - let it decide whether to alert. */ - MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret ); - return( ret ); - } - - ssl->state++; - #if defined(MBEDTLS_SSL_SRV_C) #if defined(MBEDTLS_SSL_PROTO_SSL3) /* @@ -4626,10 +5464,7 @@ int mbedtls_ssl_parse_certificate( mbedtls_ssl_context *ssl ) one. The client should know what's going on, so we don't send an alert. */ ssl->session_negotiate->verify_result = MBEDTLS_X509_BADCERT_MISSING; - if( authmode == MBEDTLS_SSL_VERIFY_OPTIONAL ) - return( 0 ); - else - return( MBEDTLS_ERR_SSL_NO_CLIENT_CERTIFICATE ); + return( MBEDTLS_ERR_SSL_NO_CLIENT_CERTIFICATE ); } } #endif /* MBEDTLS_SSL_PROTO_SSL3 */ @@ -4650,10 +5485,7 @@ int mbedtls_ssl_parse_certificate( mbedtls_ssl_context *ssl ) one. The client should know what's going on, so we don't send an alert. */ ssl->session_negotiate->verify_result = MBEDTLS_X509_BADCERT_MISSING; - if( authmode == MBEDTLS_SSL_VERIFY_OPTIONAL ) - return( 0 ); - else - return( MBEDTLS_ERR_SSL_NO_CLIENT_CERTIFICATE ); + return( MBEDTLS_ERR_SSL_NO_CLIENT_CERTIFICATE ); } } #endif /* MBEDTLS_SSL_PROTO_TLS1 || MBEDTLS_SSL_PROTO_TLS1_1 || \ @@ -4803,6 +5635,94 @@ int mbedtls_ssl_parse_certificate( mbedtls_ssl_context *ssl ) } #endif /* MBEDTLS_SSL_RENEGOTIATION && MBEDTLS_SSL_CLI_C */ + return( 0 ); +} + +int mbedtls_ssl_parse_certificate( mbedtls_ssl_context *ssl ) +{ + int ret; + const mbedtls_ssl_ciphersuite_t * const ciphersuite_info = + ssl->transform_negotiate->ciphersuite_info; +#if defined(MBEDTLS_SSL_SRV_C) && defined(MBEDTLS_SSL_SERVER_NAME_INDICATION) + const int authmode = ssl->handshake->sni_authmode != MBEDTLS_SSL_VERIFY_UNSET + ? ssl->handshake->sni_authmode + : ssl->conf->authmode; +#else + const int authmode = ssl->conf->authmode; +#endif + void *rs_ctx = NULL; + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse certificate" ) ); + + if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_PSK || + ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_DHE_PSK || + ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDHE_PSK || + ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECJPAKE ) + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip parse certificate" ) ); + ssl->state++; + return( 0 ); + } + +#if defined(MBEDTLS_SSL_SRV_C) + if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER && + ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_RSA_PSK ) + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip parse certificate" ) ); + ssl->state++; + return( 0 ); + } + + if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER && + authmode == MBEDTLS_SSL_VERIFY_NONE ) + { + ssl->session_negotiate->verify_result = MBEDTLS_X509_BADCERT_SKIP_VERIFY; + MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip parse certificate" ) ); + + ssl->state++; + return( 0 ); + } +#endif + +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( ssl->handshake->ecrs_enabled && + ssl->handshake->ecrs_state == ssl_ecrs_crt_verify ) + { + goto crt_verify; + } +#endif + + if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 ) + { + /* mbedtls_ssl_read_record may have sent an alert already. We + let it decide whether to alert. */ + MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret ); + return( ret ); + } + + if( ( ret = ssl_parse_certificate_chain( ssl ) ) != 0 ) + { +#if defined(MBEDTLS_SSL_SRV_C) + if( ret == MBEDTLS_ERR_SSL_NO_CLIENT_CERTIFICATE && + authmode == MBEDTLS_SSL_VERIFY_OPTIONAL ) + { + ret = 0; + } +#endif + + ssl->state++; + return( ret ); + } + +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( ssl->handshake->ecrs_enabled) + ssl->handshake->ecrs_state = ssl_ecrs_crt_verify; + +crt_verify: + if( ssl->handshake->ecrs_enabled) + rs_ctx = &ssl->handshake->ecrs_ctx; +#endif + if( authmode != MBEDTLS_SSL_VERIFY_NONE ) { mbedtls_x509_crt *ca_chain; @@ -4824,19 +5744,24 @@ int mbedtls_ssl_parse_certificate( mbedtls_ssl_context *ssl ) /* * Main check: verify certificate */ - ret = mbedtls_x509_crt_verify_with_profile( + ret = mbedtls_x509_crt_verify_restartable( ssl->session_negotiate->peer_cert, ca_chain, ca_crl, ssl->conf->cert_profile, ssl->hostname, &ssl->session_negotiate->verify_result, - ssl->conf->f_vrfy, ssl->conf->p_vrfy ); + ssl->conf->f_vrfy, ssl->conf->p_vrfy, rs_ctx ); if( ret != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "x509_verify_cert", ret ); } +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS ) + return( MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS ); +#endif + /* * Secondary checks: always done, but change 'ret' only if it was 0 */ @@ -4889,6 +5814,8 @@ int mbedtls_ssl_parse_certificate( mbedtls_ssl_context *ssl ) if( ret != 0 ) { + uint8_t alert; + /* The certificate may have been rejected for several reasons. Pick one and send the corresponding alert. Which alert to send may be a subject of debate in some cases. */ @@ -4931,6 +5858,8 @@ int mbedtls_ssl_parse_certificate( mbedtls_ssl_context *ssl ) #endif /* MBEDTLS_DEBUG_C */ } + ssl->state++; + MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= parse certificate" ) ); return( ret ); @@ -4955,9 +5884,9 @@ int mbedtls_ssl_write_change_cipher_spec( mbedtls_ssl_context *ssl ) ssl->state++; - if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 ) { - MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret ); + MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret ); return( ret ); } @@ -4972,7 +5901,7 @@ int mbedtls_ssl_parse_change_cipher_spec( mbedtls_ssl_context *ssl ) MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse change cipher spec" ) ); - if( ( ret = mbedtls_ssl_read_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret ); return( ret ); @@ -4986,13 +5915,8 @@ int mbedtls_ssl_parse_change_cipher_spec( mbedtls_ssl_context *ssl ) return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE ); } - if( ssl->in_msglen != 1 || ssl->in_msg[0] != 1 ) - { - MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad change cipher spec message" ) ); - mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL, - MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR ); - return( MBEDTLS_ERR_SSL_BAD_HS_CHANGE_CIPHER_SPEC ); - } + /* CCS records are only accepted if they have length 1 and content '1', + * so we don't need to check this here. */ /* * Switch to our negotiated transform and session parameters for inbound @@ -5022,16 +5946,7 @@ int mbedtls_ssl_parse_change_cipher_spec( mbedtls_ssl_context *ssl ) #endif /* MBEDTLS_SSL_PROTO_DTLS */ memset( ssl->in_ctr, 0, 8 ); - /* - * Set the in_msg pointer to the correct location based on IV length - */ - if( ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_2 ) - { - ssl->in_msg = ssl->in_iv + ssl->transform_negotiate->ivlen - - ssl->transform_negotiate->fixed_ivlen; - } - else - ssl->in_msg = ssl->in_iv; + ssl_update_in_pointers( ssl, ssl->transform_negotiate ); #if defined(MBEDTLS_SSL_HW_RECORD_ACCEL) if( mbedtls_ssl_hw_record_activate != NULL ) @@ -5482,16 +6397,7 @@ int mbedtls_ssl_write_finished( mbedtls_ssl_context *ssl ) MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write finished" ) ); - /* - * Set the out_msg pointer to the correct location based on IV length - */ - if( ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_2 ) - { - ssl->out_msg = ssl->out_iv + ssl->transform_negotiate->ivlen - - ssl->transform_negotiate->fixed_ivlen; - } - else - ssl->out_msg = ssl->out_iv; + ssl_update_out_pointers( ssl, ssl->transform_negotiate ); ssl->handshake->calc_finished( ssl, ssl->out_msg + 4, ssl->conf->endpoint ); @@ -5543,14 +6449,14 @@ int mbedtls_ssl_write_finished( mbedtls_ssl_context *ssl ) /* Remember current epoch settings for resending */ ssl->handshake->alt_transform_out = ssl->transform_out; - memcpy( ssl->handshake->alt_out_ctr, ssl->out_ctr, 8 ); + memcpy( ssl->handshake->alt_out_ctr, ssl->cur_out_ctr, 8 ); /* Set sequence_number to zero */ - memset( ssl->out_ctr + 2, 0, 6 ); + memset( ssl->cur_out_ctr + 2, 0, 6 ); /* Increment epoch */ for( i = 2; i > 0; i-- ) - if( ++ssl->out_ctr[i - 1] != 0 ) + if( ++ssl->cur_out_ctr[i - 1] != 0 ) break; /* The loop goes to its end iff the counter is wrapping */ @@ -5562,7 +6468,7 @@ int mbedtls_ssl_write_finished( mbedtls_ssl_context *ssl ) } else #endif /* MBEDTLS_SSL_PROTO_DTLS */ - memset( ssl->out_ctr, 0, 8 ); + memset( ssl->cur_out_ctr, 0, 8 ); ssl->transform_out = ssl->transform_negotiate; ssl->session_out = ssl->session_negotiate; @@ -5583,11 +6489,20 @@ int mbedtls_ssl_write_finished( mbedtls_ssl_context *ssl ) mbedtls_ssl_send_flight_completed( ssl ); #endif - if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 ) { - MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret ); + MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret ); + return( ret ); + } + +#if defined(MBEDTLS_SSL_PROTO_DTLS) + if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM && + ( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 ) + { + MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_flight_transmit", ret ); return( ret ); } +#endif MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write finished" ) ); @@ -5610,7 +6525,7 @@ int mbedtls_ssl_parse_finished( mbedtls_ssl_context *ssl ) ssl->handshake->calc_finished( ssl, buf, ssl->conf->endpoint ^ 1 ); - if( ( ret = mbedtls_ssl_read_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret ); return( ret ); @@ -5722,6 +6637,10 @@ static void ssl_handshake_params_init( mbedtls_ssl_handshake_params *handshake ) #endif #endif +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + mbedtls_x509_crt_restart_init( &handshake->ecrs_ctx ); +#endif + #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION) handshake->sni_authmode = MBEDTLS_SSL_VERIFY_UNSET; #endif @@ -5841,6 +6760,78 @@ static int ssl_cookie_check_dummy( void *ctx, } #endif /* MBEDTLS_SSL_DTLS_HELLO_VERIFY && MBEDTLS_SSL_SRV_C */ +/* Once ssl->out_hdr as the address of the beginning of the + * next outgoing record is set, deduce the other pointers. + * + * Note: For TLS, we save the implicit record sequence number + * (entering MAC computation) in the 8 bytes before ssl->out_hdr, + * and the caller has to make sure there's space for this. + */ + +static void ssl_update_out_pointers( mbedtls_ssl_context *ssl, + mbedtls_ssl_transform *transform ) +{ +#if defined(MBEDTLS_SSL_PROTO_DTLS) + if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM ) + { + ssl->out_ctr = ssl->out_hdr + 3; + ssl->out_len = ssl->out_hdr + 11; + ssl->out_iv = ssl->out_hdr + 13; + } + else +#endif + { + ssl->out_ctr = ssl->out_hdr - 8; + ssl->out_len = ssl->out_hdr + 3; + ssl->out_iv = ssl->out_hdr + 5; + } + + /* Adjust out_msg to make space for explicit IV, if used. */ + if( transform != NULL && + ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_2 ) + { + ssl->out_msg = ssl->out_iv + transform->ivlen - transform->fixed_ivlen; + } + else + ssl->out_msg = ssl->out_iv; +} + +/* Once ssl->in_hdr as the address of the beginning of the + * next incoming record is set, deduce the other pointers. + * + * Note: For TLS, we save the implicit record sequence number + * (entering MAC computation) in the 8 bytes before ssl->in_hdr, + * and the caller has to make sure there's space for this. + */ + +static void ssl_update_in_pointers( mbedtls_ssl_context *ssl, + mbedtls_ssl_transform *transform ) +{ +#if defined(MBEDTLS_SSL_PROTO_DTLS) + if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM ) + { + ssl->in_ctr = ssl->in_hdr + 3; + ssl->in_len = ssl->in_hdr + 11; + ssl->in_iv = ssl->in_hdr + 13; + } + else +#endif + { + ssl->in_ctr = ssl->in_hdr - 8; + ssl->in_len = ssl->in_hdr + 3; + ssl->in_iv = ssl->in_hdr + 5; + } + + /* Offset in_msg from in_iv to allow space for explicit IV, if used. */ + if( transform != NULL && + ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_2 ) + { + ssl->in_msg = ssl->in_iv + transform->ivlen - transform->fixed_ivlen; + } + else + ssl->in_msg = ssl->in_iv; +} + /* * Initialize an SSL context */ @@ -5852,6 +6843,28 @@ void mbedtls_ssl_init( mbedtls_ssl_context *ssl ) /* * Setup an SSL context */ + +static void ssl_reset_in_out_pointers( mbedtls_ssl_context *ssl ) +{ + /* Set the incoming and outgoing record pointers. */ +#if defined(MBEDTLS_SSL_PROTO_DTLS) + if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM ) + { + ssl->out_hdr = ssl->out_buf; + ssl->in_hdr = ssl->in_buf; + } + else +#endif /* MBEDTLS_SSL_PROTO_DTLS */ + { + ssl->out_hdr = ssl->out_buf + 8; + ssl->in_hdr = ssl->in_buf + 8; + } + + /* Derive other internal pointers. */ + ssl_update_out_pointers( ssl, NULL /* no transform enabled */ ); + ssl_update_in_pointers ( ssl, NULL /* no transform enabled */ ); +} + int mbedtls_ssl_setup( mbedtls_ssl_context *ssl, const mbedtls_ssl_config *conf ) { @@ -5862,57 +6875,55 @@ int mbedtls_ssl_setup( mbedtls_ssl_context *ssl, /* * Prepare base structures */ + + /* Set to NULL in case of an error condition */ + ssl->out_buf = NULL; + ssl->in_buf = mbedtls_calloc( 1, MBEDTLS_SSL_IN_BUFFER_LEN ); if( ssl->in_buf == NULL ) { MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc(%d bytes) failed", MBEDTLS_SSL_IN_BUFFER_LEN) ); - return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); + ret = MBEDTLS_ERR_SSL_ALLOC_FAILED; + goto error; } ssl->out_buf = mbedtls_calloc( 1, MBEDTLS_SSL_OUT_BUFFER_LEN ); if( ssl->out_buf == NULL ) { MBEDTLS_SSL_DEBUG_MSG( 1, ( "alloc(%d bytes) failed", MBEDTLS_SSL_OUT_BUFFER_LEN) ); - mbedtls_free( ssl->in_buf ); - ssl->in_buf = NULL; - return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); - } - -#if defined(MBEDTLS_SSL_PROTO_DTLS) - if( conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM ) - { - ssl->out_hdr = ssl->out_buf; - ssl->out_ctr = ssl->out_buf + 3; - ssl->out_len = ssl->out_buf + 11; - ssl->out_iv = ssl->out_buf + 13; - ssl->out_msg = ssl->out_buf + 13; - - ssl->in_hdr = ssl->in_buf; - ssl->in_ctr = ssl->in_buf + 3; - ssl->in_len = ssl->in_buf + 11; - ssl->in_iv = ssl->in_buf + 13; - ssl->in_msg = ssl->in_buf + 13; + ret = MBEDTLS_ERR_SSL_ALLOC_FAILED; + goto error; } - else -#endif - { - ssl->out_ctr = ssl->out_buf; - ssl->out_hdr = ssl->out_buf + 8; - ssl->out_len = ssl->out_buf + 11; - ssl->out_iv = ssl->out_buf + 13; - ssl->out_msg = ssl->out_buf + 13; - ssl->in_ctr = ssl->in_buf; - ssl->in_hdr = ssl->in_buf + 8; - ssl->in_len = ssl->in_buf + 11; - ssl->in_iv = ssl->in_buf + 13; - ssl->in_msg = ssl->in_buf + 13; - } + ssl_reset_in_out_pointers( ssl ); if( ( ret = ssl_handshake_init( ssl ) ) != 0 ) - return( ret ); + goto error; return( 0 ); + +error: + mbedtls_free( ssl->in_buf ); + mbedtls_free( ssl->out_buf ); + + ssl->conf = NULL; + + ssl->in_buf = NULL; + ssl->out_buf = NULL; + + ssl->in_hdr = NULL; + ssl->in_ctr = NULL; + ssl->in_len = NULL; + ssl->in_iv = NULL; + ssl->in_msg = NULL; + + ssl->out_hdr = NULL; + ssl->out_ctr = NULL; + ssl->out_len = NULL; + ssl->out_iv = NULL; + ssl->out_msg = NULL; + + return( ret ); } /* @@ -5926,6 +6937,11 @@ static int ssl_session_reset_int( mbedtls_ssl_context *ssl, int partial ) { int ret; +#if !defined(MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE) || \ + !defined(MBEDTLS_SSL_SRV_C) + ((void) partial); +#endif + ssl->state = MBEDTLS_SSL_HELLO_REQUEST; /* Cancel any possibly running timer */ @@ -5942,12 +6958,10 @@ static int ssl_session_reset_int( mbedtls_ssl_context *ssl, int partial ) ssl->secure_renegotiation = MBEDTLS_SSL_LEGACY_RENEGOTIATION; ssl->in_offt = NULL; + ssl_reset_in_out_pointers( ssl ); - ssl->in_msg = ssl->in_buf + 13; ssl->in_msgtype = 0; ssl->in_msglen = 0; - if( partial == 0 ) - ssl->in_left = 0; #if defined(MBEDTLS_SSL_PROTO_DTLS) ssl->next_record_offset = 0; ssl->in_epoch = 0; @@ -5961,7 +6975,6 @@ static int ssl_session_reset_int( mbedtls_ssl_context *ssl, int partial ) ssl->keep_current_message = 0; - ssl->out_msg = ssl->out_buf + 13; ssl->out_msgtype = 0; ssl->out_msglen = 0; ssl->out_left = 0; @@ -5970,12 +6983,23 @@ static int ssl_session_reset_int( mbedtls_ssl_context *ssl, int partial ) ssl->split_done = 0; #endif + memset( ssl->cur_out_ctr, 0, sizeof( ssl->cur_out_ctr ) ); + ssl->transform_in = NULL; ssl->transform_out = NULL; + ssl->session_in = NULL; + ssl->session_out = NULL; + memset( ssl->out_buf, 0, MBEDTLS_SSL_OUT_BUFFER_LEN ); + +#if defined(MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE) && defined(MBEDTLS_SSL_SRV_C) if( partial == 0 ) +#endif /* MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE && MBEDTLS_SSL_SRV_C */ + { + ssl->in_left = 0; memset( ssl->in_buf, 0, MBEDTLS_SSL_IN_BUFFER_LEN ); + } #if defined(MBEDTLS_SSL_HW_RECORD_ACCEL) if( mbedtls_ssl_hw_record_reset != NULL ) @@ -6008,7 +7032,9 @@ static int ssl_session_reset_int( mbedtls_ssl_context *ssl, int partial ) #endif #if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY) && defined(MBEDTLS_SSL_SRV_C) +#if defined(MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE) if( partial == 0 ) +#endif { mbedtls_free( ssl->cli_id ); ssl->cli_id = NULL; @@ -6059,7 +7085,15 @@ void mbedtls_ssl_conf_dtls_badmac_limit( mbedtls_ssl_config *conf, unsigned limi #endif #if defined(MBEDTLS_SSL_PROTO_DTLS) -void mbedtls_ssl_conf_handshake_timeout( mbedtls_ssl_config *conf, uint32_t min, uint32_t max ) + +void mbedtls_ssl_set_datagram_packing( mbedtls_ssl_context *ssl, + unsigned allow_packing ) +{ + ssl->disable_datagram_packing = !allow_packing; +} + +void mbedtls_ssl_conf_handshake_timeout( mbedtls_ssl_config *conf, + uint32_t min, uint32_t max ) { conf->hs_timeout_min = min; conf->hs_timeout_max = max; @@ -6109,6 +7143,13 @@ void mbedtls_ssl_set_bio( mbedtls_ssl_context *ssl, ssl->f_recv_timeout = f_recv_timeout; } +#if defined(MBEDTLS_SSL_PROTO_DTLS) +void mbedtls_ssl_set_mtu( mbedtls_ssl_context *ssl, uint16_t mtu ) +{ + ssl->mtu = mtu; +} +#endif + void mbedtls_ssl_conf_read_timeout( mbedtls_ssl_config *conf, uint32_t timeout ) { conf->read_timeout = timeout; @@ -6772,7 +7813,7 @@ int mbedtls_ssl_check_pending( const mbedtls_ssl_context *ssl ) /* * In all other cases, the rest of the message can be dropped. - * As in ssl_read_record_layer, this needs to be adapted if + * As in ssl_get_next_record, this needs to be adapted if * we implement support for multiple alerts in single records. */ @@ -6839,28 +7880,47 @@ const char *mbedtls_ssl_get_version( const mbedtls_ssl_context *ssl ) int mbedtls_ssl_get_record_expansion( const mbedtls_ssl_context *ssl ) { - size_t transform_expansion; + size_t transform_expansion = 0; const mbedtls_ssl_transform *transform = ssl->transform_out; + unsigned block_size; + + if( transform == NULL ) + return( (int) mbedtls_ssl_hdr_len( ssl ) ); #if defined(MBEDTLS_ZLIB_SUPPORT) if( ssl->session_out->compression != MBEDTLS_SSL_COMPRESS_NULL ) return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE ); #endif - if( transform == NULL ) - return( (int) mbedtls_ssl_hdr_len( ssl ) ); - switch( mbedtls_cipher_get_cipher_mode( &transform->cipher_ctx_enc ) ) { case MBEDTLS_MODE_GCM: case MBEDTLS_MODE_CCM: + case MBEDTLS_MODE_CHACHAPOLY: case MBEDTLS_MODE_STREAM: transform_expansion = transform->minlen; break; case MBEDTLS_MODE_CBC: - transform_expansion = transform->maclen - + mbedtls_cipher_get_block_size( &transform->cipher_ctx_enc ); + + block_size = mbedtls_cipher_get_block_size( + &transform->cipher_ctx_enc ); + + /* Expansion due to the addition of the MAC. */ + transform_expansion += transform->maclen; + + /* Expansion due to the addition of CBC padding; + * Theoretically up to 256 bytes, but we never use + * more than the block size of the underlying cipher. */ + transform_expansion += block_size; + + /* For TLS 1.1 or higher, an explicit IV is added + * after the record header. */ +#if defined(MBEDTLS_SSL_PROTO_TLS1_1) || defined(MBEDTLS_SSL_PROTO_TLS1_2) + if( ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_2 ) + transform_expansion += block_size; +#endif /* MBEDTLS_SSL_PROTO_TLS1_1 || MBEDTLS_SSL_PROTO_TLS1_2 */ + break; default: @@ -6881,19 +7941,89 @@ size_t mbedtls_ssl_get_max_frag_len( const mbedtls_ssl_context *ssl ) */ max_len = ssl_mfl_code_to_length( ssl->conf->mfl_code ); - /* - * Check if a smaller max length was negotiated - */ + /* Check if a smaller max length was negotiated */ if( ssl->session_out != NULL && ssl_mfl_code_to_length( ssl->session_out->mfl_code ) < max_len ) { max_len = ssl_mfl_code_to_length( ssl->session_out->mfl_code ); } - return max_len; + /* During a handshake, use the value being negotiated */ + if( ssl->session_negotiate != NULL && + ssl_mfl_code_to_length( ssl->session_negotiate->mfl_code ) < max_len ) + { + max_len = ssl_mfl_code_to_length( ssl->session_negotiate->mfl_code ); + } + + return( max_len ); } #endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */ +#if defined(MBEDTLS_SSL_PROTO_DTLS) +static size_t ssl_get_current_mtu( const mbedtls_ssl_context *ssl ) +{ + /* Return unlimited mtu for client hello messages to avoid fragmentation. */ + if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT && + ( ssl->state == MBEDTLS_SSL_CLIENT_HELLO || + ssl->state == MBEDTLS_SSL_SERVER_HELLO ) ) + return ( 0 ); + + if( ssl->handshake == NULL || ssl->handshake->mtu == 0 ) + return( ssl->mtu ); + + if( ssl->mtu == 0 ) + return( ssl->handshake->mtu ); + + return( ssl->mtu < ssl->handshake->mtu ? + ssl->mtu : ssl->handshake->mtu ); +} +#endif /* MBEDTLS_SSL_PROTO_DTLS */ + +int mbedtls_ssl_get_max_out_record_payload( const mbedtls_ssl_context *ssl ) +{ + size_t max_len = MBEDTLS_SSL_OUT_CONTENT_LEN; + +#if !defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) && \ + !defined(MBEDTLS_SSL_PROTO_DTLS) + (void) ssl; +#endif + +#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) + const size_t mfl = mbedtls_ssl_get_max_frag_len( ssl ); + + if( max_len > mfl ) + max_len = mfl; +#endif + +#if defined(MBEDTLS_SSL_PROTO_DTLS) + if( ssl_get_current_mtu( ssl ) != 0 ) + { + const size_t mtu = ssl_get_current_mtu( ssl ); + const int ret = mbedtls_ssl_get_record_expansion( ssl ); + const size_t overhead = (size_t) ret; + + if( ret < 0 ) + return( ret ); + + if( mtu <= overhead ) + { + MBEDTLS_SSL_DEBUG_MSG( 1, ( "MTU too low for record expansion" ) ); + return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE ); + } + + if( max_len > mtu - overhead ) + max_len = mtu - overhead; + } +#endif /* MBEDTLS_SSL_PROTO_DTLS */ + +#if !defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) && \ + !defined(MBEDTLS_SSL_PROTO_DTLS) + ((void) ssl); +#endif + + return( (int) max_len ); +} + #if defined(MBEDTLS_X509_CRT_PARSE_C) const mbedtls_x509_crt *mbedtls_ssl_get_peer_cert( const mbedtls_ssl_context *ssl ) { @@ -6981,9 +8111,9 @@ static int ssl_write_hello_request( mbedtls_ssl_context *ssl ) ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE; ssl->out_msg[0] = MBEDTLS_SSL_HS_HELLO_REQUEST; - if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 ) { - MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret ); + MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret ); return( ret ); } @@ -7113,7 +8243,7 @@ static int ssl_check_ctr_renegotiate( mbedtls_ssl_context *ssl ) in_ctr_cmp = memcmp( ssl->in_ctr + ep_len, ssl->conf->renego_period + ep_len, 8 - ep_len ); - out_ctr_cmp = memcmp( ssl->out_ctr + ep_len, + out_ctr_cmp = memcmp( ssl->cur_out_ctr + ep_len, ssl->conf->renego_period + ep_len, 8 - ep_len ); if( in_ctr_cmp <= 0 && out_ctr_cmp <= 0 ) @@ -7148,7 +8278,7 @@ int mbedtls_ssl_read( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len ) if( ssl->handshake != NULL && ssl->handshake->retransmit_state == MBEDTLS_SSL_RETRANS_SENDING ) { - if( ( ret = mbedtls_ssl_resend( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 ) return( ret ); } } @@ -7197,7 +8327,7 @@ int mbedtls_ssl_read( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len ) ssl_set_timer( ssl, ssl->conf->read_timeout ); } - if( ( ret = mbedtls_ssl_read_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 ) { if( ret == MBEDTLS_ERR_SSL_CONN_EOF ) return( 0 ); @@ -7212,7 +8342,7 @@ int mbedtls_ssl_read( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len ) /* * OpenSSL sends empty messages to randomize the IV */ - if( ( ret = mbedtls_ssl_read_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 ) { if( ret == MBEDTLS_ERR_SSL_CONN_EOF ) return( 0 ); @@ -7445,12 +8575,15 @@ int mbedtls_ssl_read( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len ) static int ssl_write_real( mbedtls_ssl_context *ssl, const unsigned char *buf, size_t len ) { - int ret; -#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) - size_t max_len = mbedtls_ssl_get_max_frag_len( ssl ); -#else - size_t max_len = MBEDTLS_SSL_OUT_CONTENT_LEN; -#endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */ + int ret = mbedtls_ssl_get_max_out_record_payload( ssl ); + const size_t max_len = (size_t) ret; + + if( ret < 0 ) + { + MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_get_max_out_record_payload", ret ); + return( ret ); + } + if( len > max_len ) { #if defined(MBEDTLS_SSL_PROTO_DTLS) @@ -7491,7 +8624,7 @@ static int ssl_write_real( mbedtls_ssl_context *ssl, ssl->out_msgtype = MBEDTLS_SSL_MSG_APPLICATION_DATA; memcpy( ssl->out_msg, buf, len ); - if( ( ret = mbedtls_ssl_write_record( ssl ) ) != 0 ) + if( ( ret = mbedtls_ssl_write_record( ssl, SSL_FORCE_FLUSH ) ) != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_record", ret ); return( ret ); @@ -7643,6 +8776,42 @@ static void ssl_key_cert_free( mbedtls_ssl_key_cert *key_cert ) } #endif /* MBEDTLS_X509_CRT_PARSE_C */ +#if defined(MBEDTLS_SSL_PROTO_DTLS) + +static void ssl_buffering_free( mbedtls_ssl_context *ssl ) +{ + unsigned offset; + mbedtls_ssl_handshake_params * const hs = ssl->handshake; + + if( hs == NULL ) + return; + + ssl_free_buffered_record( ssl ); + + for( offset = 0; offset < MBEDTLS_SSL_MAX_BUFFERED_HS; offset++ ) + ssl_buffering_free_slot( ssl, offset ); +} + +static void ssl_buffering_free_slot( mbedtls_ssl_context *ssl, + uint8_t slot ) +{ + mbedtls_ssl_handshake_params * const hs = ssl->handshake; + mbedtls_ssl_hs_buffer * const hs_buf = &hs->buffering.hs[slot]; + + if( slot >= MBEDTLS_SSL_MAX_BUFFERED_HS ) + return; + + if( hs_buf->is_valid == 1 ) + { + hs->buffering.total_bytes_buffered -= hs_buf->data_len; + mbedtls_platform_zeroize( hs_buf->data, hs_buf->data_len ); + mbedtls_free( hs_buf->data ); + memset( hs_buf, 0, sizeof( mbedtls_ssl_hs_buffer ) ); + } +} + +#endif /* MBEDTLS_SSL_PROTO_DTLS */ + void mbedtls_ssl_handshake_free( mbedtls_ssl_context *ssl ) { mbedtls_ssl_handshake_params *handshake = ssl->handshake; @@ -7720,10 +8889,14 @@ void mbedtls_ssl_handshake_free( mbedtls_ssl_context *ssl ) } #endif /* MBEDTLS_X509_CRT_PARSE_C && MBEDTLS_SSL_SERVER_NAME_INDICATION */ +#if defined(MBEDTLS_SSL__ECP_RESTARTABLE) + mbedtls_x509_crt_restart_free( &handshake->ecrs_ctx ); +#endif + #if defined(MBEDTLS_SSL_PROTO_DTLS) mbedtls_free( handshake->verify_cookie ); - mbedtls_free( handshake->hs_msg ); ssl_flight_free( handshake->flight ); + ssl_buffering_free( ssl ); #endif mbedtls_platform_zeroize( handshake, diff --git a/thirdparty/mbedtls/library/threading.c b/thirdparty/mbedtls/library/threading.c index 7a32e672c7..7c90c7c595 100644 --- a/thirdparty/mbedtls/library/threading.c +++ b/thirdparty/mbedtls/library/threading.c @@ -19,6 +19,14 @@ * This file is part of mbed TLS (https://tls.mbed.org) */ +/* + * Ensure gmtime_r is available even with -std=c99; must be defined before + * config.h, which pulls in glibc's features.h. Harmless on other platforms. + */ +#if !defined(_POSIX_C_SOURCE) +#define _POSIX_C_SOURCE 200112L +#endif + #if !defined(MBEDTLS_CONFIG_FILE) #include "mbedtls/config.h" #else @@ -29,6 +37,36 @@ #include "mbedtls/threading.h" +#if defined(MBEDTLS_HAVE_TIME_DATE) && !defined(MBEDTLS_PLATFORM_GMTIME_R_ALT) + +#if !defined(_WIN32) && (defined(unix) || \ + defined(__unix) || defined(__unix__) || (defined(__APPLE__) && \ + defined(__MACH__))) +#include <unistd.h> +#endif /* !_WIN32 && (unix || __unix || __unix__ || + * (__APPLE__ && __MACH__)) */ + +#if !( ( defined(_POSIX_VERSION) && _POSIX_VERSION >= 200809L ) || \ + ( defined(_POSIX_THREAD_SAFE_FUNCTIONS ) && \ + _POSIX_THREAD_SAFE_FUNCTIONS >= 20112L ) ) +/* + * This is a convenience shorthand macro to avoid checking the long + * preprocessor conditions above. Ideally, we could expose this macro in + * platform_util.h and simply use it in platform_util.c, threading.c and + * threading.h. However, this macro is not part of the Mbed TLS public API, so + * we keep it private by only defining it in this file + */ + +#if ! ( defined(_WIN32) && !defined(EFIX64) && !defined(EFI32) ) +#define THREADING_USE_GMTIME +#endif /* ! ( defined(_WIN32) && !defined(EFIX64) && !defined(EFI32) ) */ + +#endif /* !( ( defined(_POSIX_VERSION) && _POSIX_VERSION >= 200809L ) || \ + ( defined(_POSIX_THREAD_SAFE_FUNCTIONS ) && \ + _POSIX_THREAD_SAFE_FUNCTIONS >= 20112L ) ) */ + +#endif /* MBEDTLS_HAVE_TIME_DATE && !MBEDTLS_PLATFORM_GMTIME_R_ALT */ + #if defined(MBEDTLS_THREADING_PTHREAD) static void threading_mutex_init_pthread( mbedtls_threading_mutex_t *mutex ) { @@ -114,6 +152,9 @@ void mbedtls_threading_set_alt( void (*mutex_init)( mbedtls_threading_mutex_t * #if defined(MBEDTLS_FS_IO) mbedtls_mutex_init( &mbedtls_threading_readdir_mutex ); #endif +#if defined(THREADING_USE_GMTIME) + mbedtls_mutex_init( &mbedtls_threading_gmtime_mutex ); +#endif } /* @@ -124,6 +165,9 @@ void mbedtls_threading_free_alt( void ) #if defined(MBEDTLS_FS_IO) mbedtls_mutex_free( &mbedtls_threading_readdir_mutex ); #endif +#if defined(THREADING_USE_GMTIME) + mbedtls_mutex_free( &mbedtls_threading_gmtime_mutex ); +#endif } #endif /* MBEDTLS_THREADING_ALT */ @@ -136,5 +180,8 @@ void mbedtls_threading_free_alt( void ) #if defined(MBEDTLS_FS_IO) mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex MUTEX_INIT; #endif +#if defined(THREADING_USE_GMTIME) +mbedtls_threading_mutex_t mbedtls_threading_gmtime_mutex MUTEX_INIT; +#endif #endif /* MBEDTLS_THREADING_C */ diff --git a/thirdparty/mbedtls/library/timing.c b/thirdparty/mbedtls/library/timing.c index 3e8139f1f9..413d133fb6 100644 --- a/thirdparty/mbedtls/library/timing.c +++ b/thirdparty/mbedtls/library/timing.c @@ -52,6 +52,7 @@ #include <windows.h> #include <winbase.h> +#include <process.h> struct _hr_time { @@ -267,18 +268,17 @@ unsigned long mbedtls_timing_get_timer( struct mbedtls_timing_hr_time *val, int /* It's OK to use a global because alarm() is supposed to be global anyway */ static DWORD alarmMs; -static DWORD WINAPI TimerProc( LPVOID TimerContext ) +static void TimerProc( void *TimerContext ) { - ((void) TimerContext); + (void) TimerContext; Sleep( alarmMs ); mbedtls_timing_alarmed = 1; - return( TRUE ); + /* _endthread will be called implicitly on return + * That ensures execution of thread funcition's epilogue */ } void mbedtls_set_alarm( int seconds ) { - DWORD ThreadId; - if( seconds == 0 ) { /* No need to create a thread for this simple case. @@ -289,7 +289,7 @@ void mbedtls_set_alarm( int seconds ) mbedtls_timing_alarmed = 0; alarmMs = seconds * 1000; - CloseHandle( CreateThread( NULL, 0, TimerProc, NULL, 0, &ThreadId ) ); + (void) _beginthread( TimerProc, 0, NULL ); } #else /* _WIN32 && !EFIX64 && !EFI32 */ diff --git a/thirdparty/mbedtls/library/version_features.c b/thirdparty/mbedtls/library/version_features.c index 777b6034c4..4c36d3caaa 100644 --- a/thirdparty/mbedtls/library/version_features.c +++ b/thirdparty/mbedtls/library/version_features.c @@ -84,6 +84,9 @@ static const char *features[] = { #if defined(MBEDTLS_DEPRECATED_REMOVED) "MBEDTLS_DEPRECATED_REMOVED", #endif /* MBEDTLS_DEPRECATED_REMOVED */ +#if defined(MBEDTLS_CHECK_PARAMS) + "MBEDTLS_CHECK_PARAMS", +#endif /* MBEDTLS_CHECK_PARAMS */ #if defined(MBEDTLS_TIMING_ALT) "MBEDTLS_TIMING_ALT", #endif /* MBEDTLS_TIMING_ALT */ @@ -339,6 +342,9 @@ static const char *features[] = { #if defined(MBEDTLS_ECP_NIST_OPTIM) "MBEDTLS_ECP_NIST_OPTIM", #endif /* MBEDTLS_ECP_NIST_OPTIM */ +#if defined(MBEDTLS_ECP_RESTARTABLE) + "MBEDTLS_ECP_RESTARTABLE", +#endif /* MBEDTLS_ECP_RESTARTABLE */ #if defined(MBEDTLS_ECDSA_DETERMINISTIC) "MBEDTLS_ECDSA_DETERMINISTIC", #endif /* MBEDTLS_ECDSA_DETERMINISTIC */ diff --git a/thirdparty/mbedtls/library/x509.c b/thirdparty/mbedtls/library/x509.c index 2e6795f750..52b5b649f7 100644 --- a/thirdparty/mbedtls/library/x509.c +++ b/thirdparty/mbedtls/library/x509.c @@ -29,10 +29,6 @@ * http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf */ -/* Ensure gmtime_r is available even with -std=c99; must be included before - * config.h, which pulls in glibc's features.h. Harmless on other platforms. */ -#define _POSIX_C_SOURCE 200112L - #if !defined(MBEDTLS_CONFIG_FILE) #include "mbedtls/config.h" #else @@ -67,6 +63,7 @@ #include "mbedtls/platform_time.h" #endif #if defined(MBEDTLS_HAVE_TIME_DATE) +#include "mbedtls/platform_util.h" #include <time.h> #endif @@ -901,11 +898,7 @@ static int x509_get_current_time( mbedtls_x509_time *now ) int ret = 0; tt = mbedtls_time( NULL ); -#if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32) - lt = gmtime_s( &tm_buf, &tt ) == 0 ? &tm_buf : NULL; -#else - lt = gmtime_r( &tt, &tm_buf ); -#endif + lt = mbedtls_platform_gmtime_r( &tt, &tm_buf ); if( lt == NULL ) ret = -1; diff --git a/thirdparty/mbedtls/library/x509_create.c b/thirdparty/mbedtls/library/x509_create.c index df20ec8ebd..546e8fa1a9 100644 --- a/thirdparty/mbedtls/library/x509_create.c +++ b/thirdparty/mbedtls/library/x509_create.c @@ -33,48 +33,84 @@ #include <string.h> +/* Structure linking OIDs for X.509 DN AttributeTypes to their + * string representations and default string encodings used by Mbed TLS. */ typedef struct { - const char *name; - size_t name_len; - const char*oid; + const char *name; /* String representation of AttributeType, e.g. + * "CN" or "emailAddress". */ + size_t name_len; /* Length of 'name', without trailing 0 byte. */ + const char *oid; /* String representation of OID of AttributeType, + * as per RFC 5280, Appendix A.1. */ + int default_tag; /* The default character encoding used for the + * given attribute type, e.g. + * MBEDTLS_ASN1_UTF8_STRING for UTF-8. */ } x509_attr_descriptor_t; #define ADD_STRLEN( s ) s, sizeof( s ) - 1 +/* X.509 DN attributes from RFC 5280, Appendix A.1. */ static const x509_attr_descriptor_t x509_attrs[] = { - { ADD_STRLEN( "CN" ), MBEDTLS_OID_AT_CN }, - { ADD_STRLEN( "commonName" ), MBEDTLS_OID_AT_CN }, - { ADD_STRLEN( "C" ), MBEDTLS_OID_AT_COUNTRY }, - { ADD_STRLEN( "countryName" ), MBEDTLS_OID_AT_COUNTRY }, - { ADD_STRLEN( "O" ), MBEDTLS_OID_AT_ORGANIZATION }, - { ADD_STRLEN( "organizationName" ), MBEDTLS_OID_AT_ORGANIZATION }, - { ADD_STRLEN( "L" ), MBEDTLS_OID_AT_LOCALITY }, - { ADD_STRLEN( "locality" ), MBEDTLS_OID_AT_LOCALITY }, - { ADD_STRLEN( "R" ), MBEDTLS_OID_PKCS9_EMAIL }, - { ADD_STRLEN( "OU" ), MBEDTLS_OID_AT_ORG_UNIT }, - { ADD_STRLEN( "organizationalUnitName" ), MBEDTLS_OID_AT_ORG_UNIT }, - { ADD_STRLEN( "ST" ), MBEDTLS_OID_AT_STATE }, - { ADD_STRLEN( "stateOrProvinceName" ), MBEDTLS_OID_AT_STATE }, - { ADD_STRLEN( "emailAddress" ), MBEDTLS_OID_PKCS9_EMAIL }, - { ADD_STRLEN( "serialNumber" ), MBEDTLS_OID_AT_SERIAL_NUMBER }, - { ADD_STRLEN( "postalAddress" ), MBEDTLS_OID_AT_POSTAL_ADDRESS }, - { ADD_STRLEN( "postalCode" ), MBEDTLS_OID_AT_POSTAL_CODE }, - { ADD_STRLEN( "dnQualifier" ), MBEDTLS_OID_AT_DN_QUALIFIER }, - { ADD_STRLEN( "title" ), MBEDTLS_OID_AT_TITLE }, - { ADD_STRLEN( "surName" ), MBEDTLS_OID_AT_SUR_NAME }, - { ADD_STRLEN( "SN" ), MBEDTLS_OID_AT_SUR_NAME }, - { ADD_STRLEN( "givenName" ), MBEDTLS_OID_AT_GIVEN_NAME }, - { ADD_STRLEN( "GN" ), MBEDTLS_OID_AT_GIVEN_NAME }, - { ADD_STRLEN( "initials" ), MBEDTLS_OID_AT_INITIALS }, - { ADD_STRLEN( "pseudonym" ), MBEDTLS_OID_AT_PSEUDONYM }, - { ADD_STRLEN( "generationQualifier" ), MBEDTLS_OID_AT_GENERATION_QUALIFIER }, - { ADD_STRLEN( "domainComponent" ), MBEDTLS_OID_DOMAIN_COMPONENT }, - { ADD_STRLEN( "DC" ), MBEDTLS_OID_DOMAIN_COMPONENT }, - { NULL, 0, NULL } + { ADD_STRLEN( "CN" ), + MBEDTLS_OID_AT_CN, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "commonName" ), + MBEDTLS_OID_AT_CN, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "C" ), + MBEDTLS_OID_AT_COUNTRY, MBEDTLS_ASN1_PRINTABLE_STRING }, + { ADD_STRLEN( "countryName" ), + MBEDTLS_OID_AT_COUNTRY, MBEDTLS_ASN1_PRINTABLE_STRING }, + { ADD_STRLEN( "O" ), + MBEDTLS_OID_AT_ORGANIZATION, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "organizationName" ), + MBEDTLS_OID_AT_ORGANIZATION, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "L" ), + MBEDTLS_OID_AT_LOCALITY, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "locality" ), + MBEDTLS_OID_AT_LOCALITY, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "R" ), + MBEDTLS_OID_PKCS9_EMAIL, MBEDTLS_ASN1_IA5_STRING }, + { ADD_STRLEN( "OU" ), + MBEDTLS_OID_AT_ORG_UNIT, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "organizationalUnitName" ), + MBEDTLS_OID_AT_ORG_UNIT, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "ST" ), + MBEDTLS_OID_AT_STATE, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "stateOrProvinceName" ), + MBEDTLS_OID_AT_STATE, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "emailAddress" ), + MBEDTLS_OID_PKCS9_EMAIL, MBEDTLS_ASN1_IA5_STRING }, + { ADD_STRLEN( "serialNumber" ), + MBEDTLS_OID_AT_SERIAL_NUMBER, MBEDTLS_ASN1_PRINTABLE_STRING }, + { ADD_STRLEN( "postalAddress" ), + MBEDTLS_OID_AT_POSTAL_ADDRESS, MBEDTLS_ASN1_PRINTABLE_STRING }, + { ADD_STRLEN( "postalCode" ), + MBEDTLS_OID_AT_POSTAL_CODE, MBEDTLS_ASN1_PRINTABLE_STRING }, + { ADD_STRLEN( "dnQualifier" ), + MBEDTLS_OID_AT_DN_QUALIFIER, MBEDTLS_ASN1_PRINTABLE_STRING }, + { ADD_STRLEN( "title" ), + MBEDTLS_OID_AT_TITLE, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "surName" ), + MBEDTLS_OID_AT_SUR_NAME, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "SN" ), + MBEDTLS_OID_AT_SUR_NAME, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "givenName" ), + MBEDTLS_OID_AT_GIVEN_NAME, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "GN" ), + MBEDTLS_OID_AT_GIVEN_NAME, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "initials" ), + MBEDTLS_OID_AT_INITIALS, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "pseudonym" ), + MBEDTLS_OID_AT_PSEUDONYM, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "generationQualifier" ), + MBEDTLS_OID_AT_GENERATION_QUALIFIER, MBEDTLS_ASN1_UTF8_STRING }, + { ADD_STRLEN( "domainComponent" ), + MBEDTLS_OID_DOMAIN_COMPONENT, MBEDTLS_ASN1_IA5_STRING }, + { ADD_STRLEN( "DC" ), + MBEDTLS_OID_DOMAIN_COMPONENT, MBEDTLS_ASN1_IA5_STRING }, + { NULL, 0, NULL, MBEDTLS_ASN1_NULL } }; -static const char *x509_at_oid_from_name( const char *name, size_t name_len ) +static const x509_attr_descriptor_t *x509_attr_descr_from_name( const char *name, size_t name_len ) { const x509_attr_descriptor_t *cur; @@ -83,7 +119,10 @@ static const char *x509_at_oid_from_name( const char *name, size_t name_len ) strncmp( cur->name, name, name_len ) == 0 ) break; - return( cur->oid ); + if ( cur->name == NULL ) + return( NULL ); + + return( cur ); } int mbedtls_x509_string_to_names( mbedtls_asn1_named_data **head, const char *name ) @@ -92,6 +131,7 @@ int mbedtls_x509_string_to_names( mbedtls_asn1_named_data **head, const char *na const char *s = name, *c = s; const char *end = s + strlen( s ); const char *oid = NULL; + const x509_attr_descriptor_t* attr_descr = NULL; int in_tag = 1; char data[MBEDTLS_X509_MAX_DN_NAME_SIZE]; char *d = data; @@ -103,12 +143,13 @@ int mbedtls_x509_string_to_names( mbedtls_asn1_named_data **head, const char *na { if( in_tag && *c == '=' ) { - if( ( oid = x509_at_oid_from_name( s, c - s ) ) == NULL ) + if( ( attr_descr = x509_attr_descr_from_name( s, c - s ) ) == NULL ) { ret = MBEDTLS_ERR_X509_UNKNOWN_OID; goto exit; } + oid = attr_descr->oid; s = c + 1; in_tag = 0; d = data; @@ -127,13 +168,19 @@ int mbedtls_x509_string_to_names( mbedtls_asn1_named_data **head, const char *na } else if( !in_tag && ( *c == ',' || c == end ) ) { - if( mbedtls_asn1_store_named_data( head, oid, strlen( oid ), - (unsigned char *) data, - d - data ) == NULL ) + mbedtls_asn1_named_data* cur = + mbedtls_asn1_store_named_data( head, oid, strlen( oid ), + (unsigned char *) data, + d - data ); + + if(cur == NULL ) { return( MBEDTLS_ERR_X509_ALLOC_FAILED ); } + // set tagType + cur->val.tag = attr_descr->default_tag; + while( c < end && *(c + 1) == ' ' ) c++; @@ -192,46 +239,40 @@ int mbedtls_x509_set_extension( mbedtls_asn1_named_data **head, const char *oid, * * AttributeValue ::= ANY DEFINED BY AttributeType */ -static int x509_write_name( unsigned char **p, unsigned char *start, - const char *oid, size_t oid_len, - const unsigned char *name, size_t name_len ) +static int x509_write_name( unsigned char **p, unsigned char *start, mbedtls_asn1_named_data* cur_name) { int ret; size_t len = 0; - - // Write PrintableString for all except MBEDTLS_OID_PKCS9_EMAIL - // - if( MBEDTLS_OID_SIZE( MBEDTLS_OID_PKCS9_EMAIL ) == oid_len && - memcmp( oid, MBEDTLS_OID_PKCS9_EMAIL, oid_len ) == 0 ) - { - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_ia5_string( p, start, - (const char *) name, - name_len ) ); - } - else - { - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_printable_string( p, start, - (const char *) name, - name_len ) ); - } - + const char *oid = (const char*)cur_name->oid.p; + size_t oid_len = cur_name->oid.len; + const unsigned char *name = cur_name->val.p; + size_t name_len = cur_name->val.len; + + // Write correct string tag and value + MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tagged_string( p, start, + cur_name->val.tag, + (const char *) name, + name_len ) ); // Write OID // - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_oid( p, start, oid, oid_len ) ); + MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_oid( p, start, oid, + oid_len ) ); MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_CONSTRUCTED | - MBEDTLS_ASN1_SEQUENCE ) ); + MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, + MBEDTLS_ASN1_CONSTRUCTED | + MBEDTLS_ASN1_SEQUENCE ) ); MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); - MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, MBEDTLS_ASN1_CONSTRUCTED | + MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( p, start, + MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SET ) ); return( (int) len ); } int mbedtls_x509_write_names( unsigned char **p, unsigned char *start, - mbedtls_asn1_named_data *first ) + mbedtls_asn1_named_data *first ) { int ret; size_t len = 0; @@ -239,9 +280,7 @@ int mbedtls_x509_write_names( unsigned char **p, unsigned char *start, while( cur != NULL ) { - MBEDTLS_ASN1_CHK_ADD( len, x509_write_name( p, start, (char *) cur->oid.p, - cur->oid.len, - cur->val.p, cur->val.len ) ); + MBEDTLS_ASN1_CHK_ADD( len, x509_write_name( p, start, cur ) ); cur = cur->next; } diff --git a/thirdparty/mbedtls/library/x509_crt.c b/thirdparty/mbedtls/library/x509_crt.c index 3cf1743821..76558342e2 100644 --- a/thirdparty/mbedtls/library/x509_crt.c +++ b/thirdparty/mbedtls/library/x509_crt.c @@ -43,7 +43,6 @@ #include "mbedtls/oid.h" #include "mbedtls/platform_util.h" -#include <stdio.h> #include <string.h> #if defined(MBEDTLS_PEM_PARSE_C) @@ -53,6 +52,7 @@ #if defined(MBEDTLS_PLATFORM_C) #include "mbedtls/platform.h" #else +#include <stdio.h> #include <stdlib.h> #define mbedtls_free free #define mbedtls_calloc calloc @@ -65,19 +65,6 @@ #if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32) #include <windows.h> -#if defined(_MSC_VER) && _MSC_VER <= 1600 -/* Visual Studio 2010 and earlier issue a warning when both <stdint.h> and - * <intsafe.h> are included, as they redefine a number of <TYPE>_MAX constants. - * These constants are guaranteed to be the same, though, so we suppress the - * warning when including intsafe.h. - */ -#pragma warning( push ) -#pragma warning( disable : 4005 ) -#endif -#include <intsafe.h> -#if defined(_MSC_VER) && _MSC_VER <= 1600 -#pragma warning( pop ) -#endif #else #include <time.h> #endif @@ -176,6 +163,9 @@ const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_suiteb = static int x509_profile_check_md_alg( const mbedtls_x509_crt_profile *profile, mbedtls_md_type_t md_alg ) { + if( md_alg == MBEDTLS_MD_NONE ) + return( -1 ); + if( ( profile->allowed_mds & MBEDTLS_X509_ID_FLAG( md_alg ) ) != 0 ) return( 0 ); @@ -189,6 +179,9 @@ static int x509_profile_check_md_alg( const mbedtls_x509_crt_profile *profile, static int x509_profile_check_pk_alg( const mbedtls_x509_crt_profile *profile, mbedtls_pk_type_t pk_alg ) { + if( pk_alg == MBEDTLS_PK_NONE ) + return( -1 ); + if( ( profile->allowed_pks & MBEDTLS_X509_ID_FLAG( pk_alg ) ) != 0 ) return( 0 ); @@ -221,6 +214,9 @@ static int x509_profile_check_key( const mbedtls_x509_crt_profile *profile, { const mbedtls_ecp_group_id gid = mbedtls_pk_ec( *pk )->grp.id; + if( gid == MBEDTLS_ECP_DP_NONE ) + return( -1 ); + if( ( profile->allowed_curves & MBEDTLS_X509_ID_FLAG( gid ) ) != 0 ) return( 0 ); @@ -232,6 +228,153 @@ static int x509_profile_check_key( const mbedtls_x509_crt_profile *profile, } /* + * Like memcmp, but case-insensitive and always returns -1 if different + */ +static int x509_memcasecmp( const void *s1, const void *s2, size_t len ) +{ + size_t i; + unsigned char diff; + const unsigned char *n1 = s1, *n2 = s2; + + for( i = 0; i < len; i++ ) + { + diff = n1[i] ^ n2[i]; + + if( diff == 0 ) + continue; + + if( diff == 32 && + ( ( n1[i] >= 'a' && n1[i] <= 'z' ) || + ( n1[i] >= 'A' && n1[i] <= 'Z' ) ) ) + { + continue; + } + + return( -1 ); + } + + return( 0 ); +} + +/* + * Return 0 if name matches wildcard, -1 otherwise + */ +static int x509_check_wildcard( const char *cn, const mbedtls_x509_buf *name ) +{ + size_t i; + size_t cn_idx = 0, cn_len = strlen( cn ); + + /* We can't have a match if there is no wildcard to match */ + if( name->len < 3 || name->p[0] != '*' || name->p[1] != '.' ) + return( -1 ); + + for( i = 0; i < cn_len; ++i ) + { + if( cn[i] == '.' ) + { + cn_idx = i; + break; + } + } + + if( cn_idx == 0 ) + return( -1 ); + + if( cn_len - cn_idx == name->len - 1 && + x509_memcasecmp( name->p + 1, cn + cn_idx, name->len - 1 ) == 0 ) + { + return( 0 ); + } + + return( -1 ); +} + +/* + * Compare two X.509 strings, case-insensitive, and allowing for some encoding + * variations (but not all). + * + * Return 0 if equal, -1 otherwise. + */ +static int x509_string_cmp( const mbedtls_x509_buf *a, const mbedtls_x509_buf *b ) +{ + if( a->tag == b->tag && + a->len == b->len && + memcmp( a->p, b->p, b->len ) == 0 ) + { + return( 0 ); + } + + if( ( a->tag == MBEDTLS_ASN1_UTF8_STRING || a->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) && + ( b->tag == MBEDTLS_ASN1_UTF8_STRING || b->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) && + a->len == b->len && + x509_memcasecmp( a->p, b->p, b->len ) == 0 ) + { + return( 0 ); + } + + return( -1 ); +} + +/* + * Compare two X.509 Names (aka rdnSequence). + * + * See RFC 5280 section 7.1, though we don't implement the whole algorithm: + * we sometimes return unequal when the full algorithm would return equal, + * but never the other way. (In particular, we don't do Unicode normalisation + * or space folding.) + * + * Return 0 if equal, -1 otherwise. + */ +static int x509_name_cmp( const mbedtls_x509_name *a, const mbedtls_x509_name *b ) +{ + /* Avoid recursion, it might not be optimised by the compiler */ + while( a != NULL || b != NULL ) + { + if( a == NULL || b == NULL ) + return( -1 ); + + /* type */ + if( a->oid.tag != b->oid.tag || + a->oid.len != b->oid.len || + memcmp( a->oid.p, b->oid.p, b->oid.len ) != 0 ) + { + return( -1 ); + } + + /* value */ + if( x509_string_cmp( &a->val, &b->val ) != 0 ) + return( -1 ); + + /* structure of the list of sets */ + if( a->next_merged != b->next_merged ) + return( -1 ); + + a = a->next; + b = b->next; + } + + /* a == NULL == b */ + return( 0 ); +} + +/* + * Reset (init or clear) a verify_chain + */ +static void x509_crt_verify_chain_reset( + mbedtls_x509_crt_verify_chain *ver_chain ) +{ + size_t i; + + for( i = 0; i < MBEDTLS_X509_MAX_VERIFY_CHAIN_SIZE; i++ ) + { + ver_chain->items[i].crt = NULL; + ver_chain->items[i].flags = -1; + } + + ver_chain->len = 0; +} + +/* * Version ::= INTEGER { v1(0), v2(1), v3(2) } */ static int x509_get_version( unsigned char **p, @@ -583,18 +726,14 @@ static int x509_get_crt_ext( unsigned char **p, end_ext_data = *p + len; /* Get extension ID */ - extn_oid.tag = **p; - - if( ( ret = mbedtls_asn1_get_tag( p, end, &extn_oid.len, MBEDTLS_ASN1_OID ) ) != 0 ) + if( ( ret = mbedtls_asn1_get_tag( p, end_ext_data, &extn_oid.len, + MBEDTLS_ASN1_OID ) ) != 0 ) return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret ); + extn_oid.tag = MBEDTLS_ASN1_OID; extn_oid.p = *p; *p += extn_oid.len; - if( ( end - *p ) < 1 ) - return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + - MBEDTLS_ERR_ASN1_OUT_OF_DATA ); - /* Get optional critical */ if( ( ret = mbedtls_asn1_get_bool( p, end_ext_data, &is_critical ) ) != 0 && ( ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ) ) @@ -1139,7 +1278,6 @@ int mbedtls_x509_crt_parse_path( mbedtls_x509_crt *chain, const char *path ) char filename[MAX_PATH]; char *p; size_t len = strlen( path ); - int length_as_int = 0; WIN32_FIND_DATAW file_data; HANDLE hFind; @@ -1154,18 +1292,7 @@ int mbedtls_x509_crt_parse_path( mbedtls_x509_crt *chain, const char *path ) p = filename + len; filename[len++] = '*'; - if ( FAILED ( SizeTToInt( len, &length_as_int ) ) ) - return( MBEDTLS_ERR_X509_FILE_IO_ERROR ); - - /* - * Note this function uses the code page CP_ACP, and assumes the incoming - * string is encoded in ANSI, before translating it into Unicode. If the - * incoming string were changed to be UTF-8, then the length check needs to - * change to check the number of characters, not the number of bytes, in the - * incoming string are less than MAX_PATH to avoid a buffer overrun with - * MultiByteToWideChar(). - */ - w_ret = MultiByteToWideChar( CP_ACP, 0, filename, length_as_int, szDir, + w_ret = MultiByteToWideChar( CP_ACP, 0, filename, (int)len, szDir, MAX_PATH - 3 ); if( w_ret == 0 ) return( MBEDTLS_ERR_X509_BAD_INPUT_DATA ); @@ -1182,11 +1309,8 @@ int mbedtls_x509_crt_parse_path( mbedtls_x509_crt *chain, const char *path ) if( file_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ) continue; - if ( FAILED( SizeTToInt( wcslen( file_data.cFileName ), &length_as_int ) ) ) - return( MBEDTLS_ERR_X509_FILE_IO_ERROR ); - w_ret = WideCharToMultiByte( CP_ACP, 0, file_data.cFileName, - length_as_int, + lstrlenW( file_data.cFileName ), p, (int) len - 1, NULL, NULL ); if( w_ret == 0 ) @@ -1690,9 +1814,7 @@ static int x509_crt_verifycrl( mbedtls_x509_crt *crt, mbedtls_x509_crt *ca, while( crl_list != NULL ) { if( crl_list->version == 0 || - crl_list->issuer_raw.len != ca->subject_raw.len || - memcmp( crl_list->issuer_raw.p, ca->subject_raw.p, - crl_list->issuer_raw.len ) != 0 ) + x509_name_cmp( &crl_list->issuer, &ca->subject ) != 0 ) { crl_list = crl_list->next; continue; @@ -1702,7 +1824,8 @@ static int x509_crt_verifycrl( mbedtls_x509_crt *crt, mbedtls_x509_crt *ca, * Check if the CA is configured to sign CRLs */ #if defined(MBEDTLS_X509_CHECK_KEY_USAGE) - if( mbedtls_x509_crt_check_key_usage( ca, MBEDTLS_X509_KU_CRL_SIGN ) != 0 ) + if( mbedtls_x509_crt_check_key_usage( ca, + MBEDTLS_X509_KU_CRL_SIGN ) != 0 ) { flags |= MBEDTLS_X509_BADCRL_NOT_TRUSTED; break; @@ -1763,140 +1886,11 @@ static int x509_crt_verifycrl( mbedtls_x509_crt *crt, mbedtls_x509_crt *ca, #endif /* MBEDTLS_X509_CRL_PARSE_C */ /* - * Like memcmp, but case-insensitive and always returns -1 if different - */ -static int x509_memcasecmp( const void *s1, const void *s2, size_t len ) -{ - size_t i; - unsigned char diff; - const unsigned char *n1 = s1, *n2 = s2; - - for( i = 0; i < len; i++ ) - { - diff = n1[i] ^ n2[i]; - - if( diff == 0 ) - continue; - - if( diff == 32 && - ( ( n1[i] >= 'a' && n1[i] <= 'z' ) || - ( n1[i] >= 'A' && n1[i] <= 'Z' ) ) ) - { - continue; - } - - return( -1 ); - } - - return( 0 ); -} - -/* - * Return 0 if name matches wildcard, -1 otherwise - */ -static int x509_check_wildcard( const char *cn, const mbedtls_x509_buf *name ) -{ - size_t i; - size_t cn_idx = 0, cn_len = strlen( cn ); - - /* We can't have a match if there is no wildcard to match */ - if( name->len < 3 || name->p[0] != '*' || name->p[1] != '.' ) - return( -1 ); - - for( i = 0; i < cn_len; ++i ) - { - if( cn[i] == '.' ) - { - cn_idx = i; - break; - } - } - - if( cn_idx == 0 ) - return( -1 ); - - if( cn_len - cn_idx == name->len - 1 && - x509_memcasecmp( name->p + 1, cn + cn_idx, name->len - 1 ) == 0 ) - { - return( 0 ); - } - - return( -1 ); -} - -/* - * Compare two X.509 strings, case-insensitive, and allowing for some encoding - * variations (but not all). - * - * Return 0 if equal, -1 otherwise. - */ -static int x509_string_cmp( const mbedtls_x509_buf *a, const mbedtls_x509_buf *b ) -{ - if( a->tag == b->tag && - a->len == b->len && - memcmp( a->p, b->p, b->len ) == 0 ) - { - return( 0 ); - } - - if( ( a->tag == MBEDTLS_ASN1_UTF8_STRING || a->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) && - ( b->tag == MBEDTLS_ASN1_UTF8_STRING || b->tag == MBEDTLS_ASN1_PRINTABLE_STRING ) && - a->len == b->len && - x509_memcasecmp( a->p, b->p, b->len ) == 0 ) - { - return( 0 ); - } - - return( -1 ); -} - -/* - * Compare two X.509 Names (aka rdnSequence). - * - * See RFC 5280 section 7.1, though we don't implement the whole algorithm: - * we sometimes return unequal when the full algorithm would return equal, - * but never the other way. (In particular, we don't do Unicode normalisation - * or space folding.) - * - * Return 0 if equal, -1 otherwise. - */ -static int x509_name_cmp( const mbedtls_x509_name *a, const mbedtls_x509_name *b ) -{ - /* Avoid recursion, it might not be optimised by the compiler */ - while( a != NULL || b != NULL ) - { - if( a == NULL || b == NULL ) - return( -1 ); - - /* type */ - if( a->oid.tag != b->oid.tag || - a->oid.len != b->oid.len || - memcmp( a->oid.p, b->oid.p, b->oid.len ) != 0 ) - { - return( -1 ); - } - - /* value */ - if( x509_string_cmp( &a->val, &b->val ) != 0 ) - return( -1 ); - - /* structure of the list of sets */ - if( a->next_merged != b->next_merged ) - return( -1 ); - - a = a->next; - b = b->next; - } - - /* a == NULL == b */ - return( 0 ); -} - -/* * Check the signature of a certificate by its parent */ static int x509_crt_check_signature( const mbedtls_x509_crt *child, - mbedtls_x509_crt *parent ) + mbedtls_x509_crt *parent, + mbedtls_x509_crt_restart_ctx *rs_ctx ) { const mbedtls_md_info_t *md_info; unsigned char hash[MBEDTLS_MD_MAX_SIZE]; @@ -1908,14 +1902,24 @@ static int x509_crt_check_signature( const mbedtls_x509_crt *child, return( -1 ); } - if( mbedtls_pk_verify_ext( child->sig_pk, child->sig_opts, &parent->pk, - child->sig_md, hash, mbedtls_md_get_size( md_info ), - child->sig.p, child->sig.len ) != 0 ) - { + /* Skip expensive computation on obvious mismatch */ + if( ! mbedtls_pk_can_do( &parent->pk, child->sig_pk ) ) return( -1 ); + +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && child->sig_pk == MBEDTLS_PK_ECDSA ) + { + return( mbedtls_pk_verify_restartable( &parent->pk, + child->sig_md, hash, mbedtls_md_get_size( md_info ), + child->sig.p, child->sig.len, &rs_ctx->pk ) ); } +#else + (void) rs_ctx; +#endif - return( 0 ); + return( mbedtls_pk_verify_ext( child->sig_pk, child->sig_opts, &parent->pk, + child->sig_md, hash, mbedtls_md_get_size( md_info ), + child->sig.p, child->sig.len ) ); } /* @@ -1962,6 +1966,7 @@ static int x509_crt_check_parent( const mbedtls_x509_crt *child, * 1. subject name matches child's issuer * 2. if necessary, the CA bit is set and key usage allows signing certs * 3. for trusted roots, the signature is correct + * (for intermediates, the signature is checked and the result reported) * 4. pathlen constraints are satisfied * * If there's a suitable candidate which is also time-valid, return the first @@ -1984,23 +1989,54 @@ static int x509_crt_check_parent( const mbedtls_x509_crt *child, * Arguments: * - [in] child: certificate for which we're looking for a parent * - [in] candidates: chained list of potential parents + * - [out] r_parent: parent found (or NULL) + * - [out] r_signature_is_good: 1 if child signature by parent is valid, or 0 * - [in] top: 1 if candidates consists of trusted roots, ie we're at the top * of the chain, 0 otherwise * - [in] path_cnt: number of intermediates seen so far * - [in] self_cnt: number of self-signed intermediates seen so far * (will never be greater than path_cnt) + * - [in-out] rs_ctx: context for restarting operations * * Return value: - * - the first suitable parent found (see above regarding time-validity) - * - NULL if no suitable parent was found + * - 0 on success + * - MBEDTLS_ERR_ECP_IN_PROGRESS otherwise */ -static mbedtls_x509_crt *x509_crt_find_parent_in( mbedtls_x509_crt *child, - mbedtls_x509_crt *candidates, - int top, - size_t path_cnt, - size_t self_cnt ) +static int x509_crt_find_parent_in( + mbedtls_x509_crt *child, + mbedtls_x509_crt *candidates, + mbedtls_x509_crt **r_parent, + int *r_signature_is_good, + int top, + unsigned path_cnt, + unsigned self_cnt, + mbedtls_x509_crt_restart_ctx *rs_ctx ) { - mbedtls_x509_crt *parent, *badtime_parent = NULL; + int ret; + mbedtls_x509_crt *parent, *fallback_parent; + int signature_is_good, fallback_signature_is_good; + +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + /* did we have something in progress? */ + if( rs_ctx != NULL && rs_ctx->parent != NULL ) + { + /* restore saved state */ + parent = rs_ctx->parent; + fallback_parent = rs_ctx->fallback_parent; + fallback_signature_is_good = rs_ctx->fallback_signature_is_good; + + /* clear saved state */ + rs_ctx->parent = NULL; + rs_ctx->fallback_parent = NULL; + rs_ctx->fallback_signature_is_good = 0; + + /* resume where we left */ + goto check_signature; + } +#endif + + fallback_parent = NULL; + fallback_signature_is_good = 0; for( parent = candidates; parent != NULL; parent = parent->next ) { @@ -2016,17 +2052,38 @@ static mbedtls_x509_crt *x509_crt_find_parent_in( mbedtls_x509_crt *child, } /* Signature */ - if( top && x509_crt_check_signature( child, parent ) != 0 ) +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) +check_signature: +#endif + ret = x509_crt_check_signature( child, parent, rs_ctx ); + +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && ret == MBEDTLS_ERR_ECP_IN_PROGRESS ) { - continue; + /* save state */ + rs_ctx->parent = parent; + rs_ctx->fallback_parent = fallback_parent; + rs_ctx->fallback_signature_is_good = fallback_signature_is_good; + + return( ret ); } +#else + (void) ret; +#endif + + signature_is_good = ret == 0; + if( top && ! signature_is_good ) + continue; /* optional time check */ if( mbedtls_x509_time_is_past( &parent->valid_to ) || mbedtls_x509_time_is_future( &parent->valid_from ) ) { - if( badtime_parent == NULL ) - badtime_parent = parent; + if( fallback_parent == NULL ) + { + fallback_parent = parent; + fallback_signature_is_good = signature_is_good; + } continue; } @@ -2034,10 +2091,18 @@ static mbedtls_x509_crt *x509_crt_find_parent_in( mbedtls_x509_crt *child, break; } - if( parent == NULL ) - parent = badtime_parent; + if( parent != NULL ) + { + *r_parent = parent; + *r_signature_is_good = signature_is_good; + } + else + { + *r_parent = fallback_parent; + *r_signature_is_good = fallback_signature_is_good; + } - return( parent ); + return( 0 ); } /* @@ -2049,34 +2114,78 @@ static mbedtls_x509_crt *x509_crt_find_parent_in( mbedtls_x509_crt *child, * Arguments: * - [in] child: certificate for which we're looking for a parent, followed * by a chain of possible intermediates - * - [in] trust_ca: locally trusted CAs - * - [out] 1 if parent was found in trust_ca, 0 if found in provided chain - * - [in] path_cnt: number of intermediates seen so far - * - [in] self_cnt: number of self-signed intermediates seen so far + * - [in] trust_ca: list of locally trusted certificates + * - [out] parent: parent found (or NULL) + * - [out] parent_is_trusted: 1 if returned `parent` is trusted, or 0 + * - [out] signature_is_good: 1 if child signature by parent is valid, or 0 + * - [in] path_cnt: number of links in the chain so far (EE -> ... -> child) + * - [in] self_cnt: number of self-signed certs in the chain so far * (will always be no greater than path_cnt) + * - [in-out] rs_ctx: context for restarting operations * * Return value: - * - the first suitable parent found (see find_parent_in() for "suitable") - * - NULL if no suitable parent was found + * - 0 on success + * - MBEDTLS_ERR_ECP_IN_PROGRESS otherwise */ -static mbedtls_x509_crt *x509_crt_find_parent( mbedtls_x509_crt *child, - mbedtls_x509_crt *trust_ca, - int *parent_is_trusted, - size_t path_cnt, - size_t self_cnt ) +static int x509_crt_find_parent( + mbedtls_x509_crt *child, + mbedtls_x509_crt *trust_ca, + mbedtls_x509_crt **parent, + int *parent_is_trusted, + int *signature_is_good, + unsigned path_cnt, + unsigned self_cnt, + mbedtls_x509_crt_restart_ctx *rs_ctx ) { - mbedtls_x509_crt *parent; + int ret; + mbedtls_x509_crt *search_list; - /* Look for a parent in trusted CAs */ *parent_is_trusted = 1; - parent = x509_crt_find_parent_in( child, trust_ca, 1, path_cnt, self_cnt ); - if( parent != NULL ) - return( parent ); +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + /* restore then clear saved state if we have some stored */ + if( rs_ctx != NULL && rs_ctx->parent_is_trusted != -1 ) + { + *parent_is_trusted = rs_ctx->parent_is_trusted; + rs_ctx->parent_is_trusted = -1; + } +#endif + + while( 1 ) { + search_list = *parent_is_trusted ? trust_ca : child->next; - /* Look for a parent upwards the chain */ - *parent_is_trusted = 0; - return( x509_crt_find_parent_in( child, child->next, 0, path_cnt, self_cnt ) ); + ret = x509_crt_find_parent_in( child, search_list, + parent, signature_is_good, + *parent_is_trusted, + path_cnt, self_cnt, rs_ctx ); + +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && ret == MBEDTLS_ERR_ECP_IN_PROGRESS ) + { + /* save state */ + rs_ctx->parent_is_trusted = *parent_is_trusted; + return( ret ); + } +#else + (void) ret; +#endif + + /* stop here if found or already in second iteration */ + if( *parent != NULL || *parent_is_trusted == 0 ) + break; + + /* prepare second iteration */ + *parent_is_trusted = 0; + } + + /* extra precaution against mistakes in the caller */ + if( *parent == NULL ) + { + *parent_is_trusted = 0; + *signature_is_good = 0; + } + + return( 0 ); } /* @@ -2125,11 +2234,24 @@ static int x509_crt_check_ee_locally_trusted( * - EE, Ci1, ..., Ciq cannot be continued with a trusted root * -> return that chain with NOT_TRUSTED set on Ciq * + * Tests for (aspects of) this function should include at least: + * - trusted EE + * - EE -> trusted root + * - EE -> intermedate CA -> trusted root + * - if relevant: EE untrusted + * - if relevant: EE -> intermediate, untrusted + * with the aspect under test checked at each relevant level (EE, int, root). + * For some aspects longer chains are required, but usually length 2 is + * enough (but length 1 is not in general). + * * Arguments: * - [in] crt: the cert list EE, C1, ..., Cn * - [in] trust_ca: the trusted list R1, ..., Rp * - [in] ca_crl, profile: as in verify_with_profile() - * - [out] ver_chain, chain_len: the built and verified chain + * - [out] ver_chain: the built and verified chain + * Only valid when return value is 0, may contain garbage otherwise! + * Restart note: need not be the same when calling again to resume. + * - [in-out] rs_ctx: context for restarting operations * * Return value: * - non-zero if the chain could not be fully built and examined @@ -2141,24 +2263,50 @@ static int x509_crt_verify_chain( mbedtls_x509_crt *trust_ca, mbedtls_x509_crl *ca_crl, const mbedtls_x509_crt_profile *profile, - x509_crt_verify_chain_item ver_chain[X509_MAX_VERIFY_CHAIN_SIZE], - size_t *chain_len ) + mbedtls_x509_crt_verify_chain *ver_chain, + mbedtls_x509_crt_restart_ctx *rs_ctx ) { + /* Don't initialize any of those variables here, so that the compiler can + * catch potential issues with jumping ahead when restarting */ + int ret; uint32_t *flags; + mbedtls_x509_crt_verify_chain_item *cur; mbedtls_x509_crt *child; mbedtls_x509_crt *parent; - int parent_is_trusted = 0; - int child_is_trusted = 0; - size_t self_cnt = 0; + int parent_is_trusted; + int child_is_trusted; + int signature_is_good; + unsigned self_cnt; + +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + /* resume if we had an operation in progress */ + if( rs_ctx != NULL && rs_ctx->in_progress == x509_crt_rs_find_parent ) + { + /* restore saved state */ + *ver_chain = rs_ctx->ver_chain; /* struct copy */ + self_cnt = rs_ctx->self_cnt; + + /* restore derived state */ + cur = &ver_chain->items[ver_chain->len - 1]; + child = cur->crt; + flags = &cur->flags; + + goto find_parent; + } +#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ child = crt; - *chain_len = 0; + self_cnt = 0; + parent_is_trusted = 0; + child_is_trusted = 0; while( 1 ) { /* Add certificate to the verification chain */ - ver_chain[*chain_len].crt = child; - flags = &ver_chain[*chain_len].flags; - ++*chain_len; + cur = &ver_chain->items[ver_chain->len]; + cur->crt = child; + cur->flags = 0; + ver_chain->len++; + flags = &cur->flags; /* Check time-validity (all certificates) */ if( mbedtls_x509_time_is_past( &child->valid_to ) ) @@ -2179,15 +2327,33 @@ static int x509_crt_verify_chain( *flags |= MBEDTLS_X509_BADCERT_BAD_PK; /* Special case: EE certs that are locally trusted */ - if( *chain_len == 1 && + if( ver_chain->len == 1 && x509_crt_check_ee_locally_trusted( child, trust_ca ) == 0 ) { return( 0 ); } +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) +find_parent: +#endif /* Look for a parent in trusted CAs or up the chain */ - parent = x509_crt_find_parent( child, trust_ca, &parent_is_trusted, - *chain_len - 1, self_cnt ); + ret = x509_crt_find_parent( child, trust_ca, &parent, + &parent_is_trusted, &signature_is_good, + ver_chain->len - 1, self_cnt, rs_ctx ); + +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && ret == MBEDTLS_ERR_ECP_IN_PROGRESS ) + { + /* save state */ + rs_ctx->in_progress = x509_crt_rs_find_parent; + rs_ctx->self_cnt = self_cnt; + rs_ctx->ver_chain = *ver_chain; /* struct copy */ + + return( ret ); + } +#else + (void) ret; +#endif /* No parent? We're done here */ if( parent == NULL ) @@ -2199,7 +2365,7 @@ static int x509_crt_verify_chain( /* Count intermediate self-issued (not necessarily self-signed) certs. * These can occur with some strategies for key rollover, see [SIRO], * and should be excluded from max_pathlen checks. */ - if( *chain_len != 1 && + if( ver_chain->len != 1 && x509_name_cmp( &child->issuer, &child->subject ) == 0 ) { self_cnt++; @@ -2208,14 +2374,14 @@ static int x509_crt_verify_chain( /* path_cnt is 0 for the first intermediate CA, * and if parent is trusted it's not an intermediate CA */ if( ! parent_is_trusted && - *chain_len > MBEDTLS_X509_MAX_INTERMEDIATE_CA ) + ver_chain->len > MBEDTLS_X509_MAX_INTERMEDIATE_CA ) { /* return immediately to avoid overflow the chain array */ return( MBEDTLS_ERR_X509_FATAL_ERROR ); } - /* if parent is trusted, the signature was checked by find_parent() */ - if( ! parent_is_trusted && x509_crt_check_signature( child, parent ) != 0 ) + /* signature was checked while searching parent */ + if( ! signature_is_good ) *flags |= MBEDTLS_X509_BADCERT_NOT_TRUSTED; /* check size of signing key */ @@ -2233,6 +2399,7 @@ static int x509_crt_verify_chain( child = parent; parent = NULL; child_is_trusted = parent_is_trusted; + signature_is_good = 0; } } @@ -2301,21 +2468,22 @@ static void x509_crt_verify_name( const mbedtls_x509_crt *crt, */ static int x509_crt_merge_flags_with_cb( uint32_t *flags, - x509_crt_verify_chain_item ver_chain[X509_MAX_VERIFY_CHAIN_SIZE], - size_t chain_len, + const mbedtls_x509_crt_verify_chain *ver_chain, int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *), void *p_vrfy ) { int ret; - size_t i; + unsigned i; uint32_t cur_flags; + const mbedtls_x509_crt_verify_chain_item *cur; - for( i = chain_len; i != 0; --i ) + for( i = ver_chain->len; i != 0; --i ) { - cur_flags = ver_chain[i-1].flags; + cur = &ver_chain->items[i-1]; + cur_flags = cur->flags; if( NULL != f_vrfy ) - if( ( ret = f_vrfy( p_vrfy, ver_chain[i-1].crt, (int) i-1, &cur_flags ) ) != 0 ) + if( ( ret = f_vrfy( p_vrfy, cur->crt, (int) i-1, &cur_flags ) ) != 0 ) return( ret ); *flags |= cur_flags; @@ -2325,7 +2493,7 @@ static int x509_crt_merge_flags_with_cb( } /* - * Verify the certificate validity + * Verify the certificate validity (default profile, not restartable) */ int mbedtls_x509_crt_verify( mbedtls_x509_crt *crt, mbedtls_x509_crt *trust_ca, @@ -2334,12 +2502,28 @@ int mbedtls_x509_crt_verify( mbedtls_x509_crt *crt, int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *), void *p_vrfy ) { - return( mbedtls_x509_crt_verify_with_profile( crt, trust_ca, ca_crl, - &mbedtls_x509_crt_profile_default, cn, flags, f_vrfy, p_vrfy ) ); + return( mbedtls_x509_crt_verify_restartable( crt, trust_ca, ca_crl, + &mbedtls_x509_crt_profile_default, cn, flags, + f_vrfy, p_vrfy, NULL ) ); } /* - * Verify the certificate validity, with profile + * Verify the certificate validity (user-chosen profile, not restartable) + */ +int mbedtls_x509_crt_verify_with_profile( mbedtls_x509_crt *crt, + mbedtls_x509_crt *trust_ca, + mbedtls_x509_crl *ca_crl, + const mbedtls_x509_crt_profile *profile, + const char *cn, uint32_t *flags, + int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *), + void *p_vrfy ) +{ + return( mbedtls_x509_crt_verify_restartable( crt, trust_ca, ca_crl, + profile, cn, flags, f_vrfy, p_vrfy, NULL ) ); +} + +/* + * Verify the certificate validity, with profile, restartable version * * This function: * - checks the requested CN (if any) @@ -2348,23 +2532,23 @@ int mbedtls_x509_crt_verify( mbedtls_x509_crt *crt, * - builds and verifies the chain * - then calls the callback and merges the flags */ -int mbedtls_x509_crt_verify_with_profile( mbedtls_x509_crt *crt, +int mbedtls_x509_crt_verify_restartable( mbedtls_x509_crt *crt, mbedtls_x509_crt *trust_ca, mbedtls_x509_crl *ca_crl, const mbedtls_x509_crt_profile *profile, const char *cn, uint32_t *flags, int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *), - void *p_vrfy ) + void *p_vrfy, + mbedtls_x509_crt_restart_ctx *rs_ctx ) { int ret; mbedtls_pk_type_t pk_type; - x509_crt_verify_chain_item ver_chain[X509_MAX_VERIFY_CHAIN_SIZE]; - size_t chain_len; - uint32_t *ee_flags = &ver_chain[0].flags; + mbedtls_x509_crt_verify_chain ver_chain; + uint32_t ee_flags; *flags = 0; - memset( ver_chain, 0, sizeof( ver_chain ) ); - chain_len = 0; + ee_flags = 0; + x509_crt_verify_chain_reset( &ver_chain ); if( profile == NULL ) { @@ -2374,28 +2558,36 @@ int mbedtls_x509_crt_verify_with_profile( mbedtls_x509_crt *crt, /* check name if requested */ if( cn != NULL ) - x509_crt_verify_name( crt, cn, ee_flags ); + x509_crt_verify_name( crt, cn, &ee_flags ); /* Check the type and size of the key */ pk_type = mbedtls_pk_get_type( &crt->pk ); if( x509_profile_check_pk_alg( profile, pk_type ) != 0 ) - *ee_flags |= MBEDTLS_X509_BADCERT_BAD_PK; + ee_flags |= MBEDTLS_X509_BADCERT_BAD_PK; if( x509_profile_check_key( profile, &crt->pk ) != 0 ) - *ee_flags |= MBEDTLS_X509_BADCERT_BAD_KEY; + ee_flags |= MBEDTLS_X509_BADCERT_BAD_KEY; /* Check the chain */ ret = x509_crt_verify_chain( crt, trust_ca, ca_crl, profile, - ver_chain, &chain_len ); + &ver_chain, rs_ctx ); + if( ret != 0 ) goto exit; + /* Merge end-entity flags */ + ver_chain.items[0].flags |= ee_flags; + /* Build final flags, calling callback on the way if any */ - ret = x509_crt_merge_flags_with_cb( flags, - ver_chain, chain_len, f_vrfy, p_vrfy ); + ret = x509_crt_merge_flags_with_cb( flags, &ver_chain, f_vrfy, p_vrfy ); exit: +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) + if( rs_ctx != NULL && ret != MBEDTLS_ERR_ECP_IN_PROGRESS ) + mbedtls_x509_crt_restart_free( rs_ctx ); +#endif + /* prevent misuse of the vrfy callback - VERIFY_FAILED would be ignored by * the SSL module for authmode optional, but non-zero return from the * callback means a fatal error so it shouldn't be ignored */ @@ -2506,4 +2698,36 @@ void mbedtls_x509_crt_free( mbedtls_x509_crt *crt ) while( cert_cur != NULL ); } +#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) +/* + * Initialize a restart context + */ +void mbedtls_x509_crt_restart_init( mbedtls_x509_crt_restart_ctx *ctx ) +{ + mbedtls_pk_restart_init( &ctx->pk ); + + ctx->parent = NULL; + ctx->fallback_parent = NULL; + ctx->fallback_signature_is_good = 0; + + ctx->parent_is_trusted = -1; + + ctx->in_progress = x509_crt_rs_none; + ctx->self_cnt = 0; + x509_crt_verify_chain_reset( &ctx->ver_chain ); +} + +/* + * Free the components of a restart context + */ +void mbedtls_x509_crt_restart_free( mbedtls_x509_crt_restart_ctx *ctx ) +{ + if( ctx == NULL ) + return; + + mbedtls_pk_restart_free( &ctx->pk ); + mbedtls_x509_crt_restart_init( ctx ); +} +#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ + #endif /* MBEDTLS_X509_CRT_PARSE_C */ |