diff options
Diffstat (limited to 'thirdparty/openssl/crypto/pem/pem_seal.c')
| -rw-r--r-- | thirdparty/openssl/crypto/pem/pem_seal.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/thirdparty/openssl/crypto/pem/pem_seal.c b/thirdparty/openssl/crypto/pem/pem_seal.c new file mode 100644 index 0000000000..a5c1812575 --- /dev/null +++ b/thirdparty/openssl/crypto/pem/pem_seal.c @@ -0,0 +1,191 @@ +/* crypto/pem/pem_seal.c */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ + +#include <openssl/opensslconf.h> /* for OPENSSL_NO_RSA */ +#ifndef OPENSSL_NO_RSA +# include <stdio.h> +# include "cryptlib.h" +# include <openssl/evp.h> +# include <openssl/rand.h> +# include <openssl/objects.h> +# include <openssl/x509.h> +# include <openssl/pem.h> +# include <openssl/rsa.h> + +int PEM_SealInit(PEM_ENCODE_SEAL_CTX *ctx, EVP_CIPHER *type, EVP_MD *md_type, + unsigned char **ek, int *ekl, unsigned char *iv, + EVP_PKEY **pubk, int npubk) +{ + unsigned char key[EVP_MAX_KEY_LENGTH]; + int ret = -1; + int i, j, max = 0; + char *s = NULL; + + for (i = 0; i < npubk; i++) { + if (pubk[i]->type != EVP_PKEY_RSA) { + PEMerr(PEM_F_PEM_SEALINIT, PEM_R_PUBLIC_KEY_NO_RSA); + goto err; + } + j = RSA_size(pubk[i]->pkey.rsa); + if (j > max) + max = j; + } + s = (char *)OPENSSL_malloc(max * 2); + if (s == NULL) { + PEMerr(PEM_F_PEM_SEALINIT, ERR_R_MALLOC_FAILURE); + goto err; + } + + EVP_EncodeInit(&ctx->encode); + + EVP_MD_CTX_init(&ctx->md); + if (!EVP_SignInit(&ctx->md, md_type)) + goto err; + + EVP_CIPHER_CTX_init(&ctx->cipher); + ret = EVP_SealInit(&ctx->cipher, type, ek, ekl, iv, pubk, npubk); + if (ret <= 0) + goto err; + + /* base64 encode the keys */ + for (i = 0; i < npubk; i++) { + j = EVP_EncodeBlock((unsigned char *)s, ek[i], + RSA_size(pubk[i]->pkey.rsa)); + ekl[i] = j; + memcpy(ek[i], s, j + 1); + } + + ret = npubk; + err: + if (s != NULL) + OPENSSL_free(s); + OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH); + return (ret); +} + +void PEM_SealUpdate(PEM_ENCODE_SEAL_CTX *ctx, unsigned char *out, int *outl, + unsigned char *in, int inl) +{ + unsigned char buffer[1600]; + int i, j; + + *outl = 0; + EVP_SignUpdate(&ctx->md, in, inl); + for (;;) { + if (inl <= 0) + break; + if (inl > 1200) + i = 1200; + else + i = inl; + EVP_EncryptUpdate(&ctx->cipher, buffer, &j, in, i); + EVP_EncodeUpdate(&ctx->encode, out, &j, buffer, j); + *outl += j; + out += j; + in += i; + inl -= i; + } +} + +int PEM_SealFinal(PEM_ENCODE_SEAL_CTX *ctx, unsigned char *sig, int *sigl, + unsigned char *out, int *outl, EVP_PKEY *priv) +{ + unsigned char *s = NULL; + int ret = 0, j; + unsigned int i; + + if (priv->type != EVP_PKEY_RSA) { + PEMerr(PEM_F_PEM_SEALFINAL, PEM_R_PUBLIC_KEY_NO_RSA); + goto err; + } + i = RSA_size(priv->pkey.rsa); + if (i < 100) + i = 100; + s = (unsigned char *)OPENSSL_malloc(i * 2); + if (s == NULL) { + PEMerr(PEM_F_PEM_SEALFINAL, ERR_R_MALLOC_FAILURE); + goto err; + } + + if (!EVP_EncryptFinal_ex(&ctx->cipher, s, (int *)&i)) + goto err; + EVP_EncodeUpdate(&ctx->encode, out, &j, s, i); + *outl = j; + out += j; + EVP_EncodeFinal(&ctx->encode, out, &j); + *outl += j; + + if (!EVP_SignFinal(&ctx->md, s, &i, priv)) + goto err; + *sigl = EVP_EncodeBlock(sig, s, i); + + ret = 1; + err: + EVP_MD_CTX_cleanup(&ctx->md); + EVP_CIPHER_CTX_cleanup(&ctx->cipher); + if (s != NULL) + OPENSSL_free(s); + return (ret); +} +#else /* !OPENSSL_NO_RSA */ + +# if PEDANTIC +static void *dummy = &dummy; +# endif + +#endif |