diff options
Diffstat (limited to 'thirdparty/mbedtls/library/ssl_ticket.c')
| -rw-r--r-- | thirdparty/mbedtls/library/ssl_ticket.c | 87 |
1 files changed, 67 insertions, 20 deletions
diff --git a/thirdparty/mbedtls/library/ssl_ticket.c b/thirdparty/mbedtls/library/ssl_ticket.c index 8492c19a8c..4a091bb640 100644 --- a/thirdparty/mbedtls/library/ssl_ticket.c +++ b/thirdparty/mbedtls/library/ssl_ticket.c @@ -2,7 +2,13 @@ * TLS server tickets callbacks implementation * * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved - * SPDX-License-Identifier: Apache-2.0 + * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later + * + * This file is provided under the Apache License 2.0, or the + * GNU General Public License v2.0 or later. + * + * ********** + * Apache License 2.0: * * Licensed under the Apache License, Version 2.0 (the "License"); you may * not use this file except in compliance with the License. @@ -16,6 +22,27 @@ * See the License for the specific language governing permissions and * limitations under the License. * + * ********** + * + * ********** + * GNU General Public License v2.0 or later: + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * ********** + * * This file is part of mbed TLS (https://tls.mbed.org) */ @@ -35,6 +62,7 @@ #define mbedtls_free free #endif +#include "mbedtls/ssl_internal.h" #include "mbedtls/ssl_ticket.h" #include "mbedtls/platform_util.h" @@ -54,6 +82,19 @@ void mbedtls_ssl_ticket_init( mbedtls_ssl_ticket_context *ctx ) #define MAX_KEY_BYTES 32 /* 256 bits */ +#define TICKET_KEY_NAME_BYTES 4 +#define TICKET_IV_BYTES 12 +#define TICKET_CRYPT_LEN_BYTES 2 +#define TICKET_AUTH_TAG_BYTES 16 + +#define TICKET_MIN_LEN ( TICKET_KEY_NAME_BYTES + \ + TICKET_IV_BYTES + \ + TICKET_CRYPT_LEN_BYTES + \ + TICKET_AUTH_TAG_BYTES ) +#define TICKET_ADD_DATA_LEN ( TICKET_KEY_NAME_BYTES + \ + TICKET_IV_BYTES + \ + TICKET_CRYPT_LEN_BYTES ) + /* * Generate/update a key */ @@ -278,6 +319,7 @@ static int ssl_load_session( mbedtls_ssl_session *session, * The key_name, iv, and length of encrypted_state are the additional * authenticated data. */ + int mbedtls_ssl_ticket_write( void *p_ticket, const mbedtls_ssl_session *session, unsigned char *start, @@ -289,9 +331,9 @@ int mbedtls_ssl_ticket_write( void *p_ticket, mbedtls_ssl_ticket_context *ctx = p_ticket; mbedtls_ssl_ticket_key *key; unsigned char *key_name = start; - unsigned char *iv = start + 4; - unsigned char *state_len_bytes = iv + 12; - unsigned char *state = state_len_bytes + 2; + unsigned char *iv = start + TICKET_KEY_NAME_BYTES; + unsigned char *state_len_bytes = iv + TICKET_IV_BYTES; + unsigned char *state = state_len_bytes + TICKET_CRYPT_LEN_BYTES; unsigned char *tag; size_t clear_len, ciph_len; @@ -302,8 +344,7 @@ int mbedtls_ssl_ticket_write( void *p_ticket, /* We need at least 4 bytes for key_name, 12 for IV, 2 for len 16 for tag, * in addition to session itself, that will be checked when writing it. */ - if( end - start < 4 + 12 + 2 + 16 ) - return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL ); + MBEDTLS_SSL_CHK_BUF_PTR( start, end, TICKET_MIN_LEN ); #if defined(MBEDTLS_THREADING_C) if( ( ret = mbedtls_mutex_lock( &ctx->mutex ) ) != 0 ) @@ -317,9 +358,9 @@ int mbedtls_ssl_ticket_write( void *p_ticket, *ticket_lifetime = ctx->ticket_lifetime; - memcpy( key_name, key->name, 4 ); + memcpy( key_name, key->name, TICKET_KEY_NAME_BYTES ); - if( ( ret = ctx->f_rng( ctx->p_rng, iv, 12 ) ) != 0 ) + if( ( ret = ctx->f_rng( ctx->p_rng, iv, TICKET_IV_BYTES ) ) != 0 ) goto cleanup; /* Dump session state */ @@ -335,8 +376,11 @@ int mbedtls_ssl_ticket_write( void *p_ticket, /* Encrypt and authenticate */ tag = state + clear_len; if( ( ret = mbedtls_cipher_auth_encrypt( &key->ctx, - iv, 12, key_name, 4 + 12 + 2, - state, clear_len, state, &ciph_len, tag, 16 ) ) != 0 ) + iv, TICKET_IV_BYTES, + /* Additional data: key name, IV and length */ + key_name, TICKET_ADD_DATA_LEN, + state, clear_len, state, &ciph_len, + tag, TICKET_AUTH_TAG_BYTES ) ) != 0 ) { goto cleanup; } @@ -346,7 +390,7 @@ int mbedtls_ssl_ticket_write( void *p_ticket, goto cleanup; } - *tlen = 4 + 12 + 2 + 16 + ciph_len; + *tlen = TICKET_MIN_LEN + ciph_len; cleanup: #if defined(MBEDTLS_THREADING_C) @@ -385,17 +429,16 @@ int mbedtls_ssl_ticket_parse( void *p_ticket, mbedtls_ssl_ticket_context *ctx = p_ticket; mbedtls_ssl_ticket_key *key; unsigned char *key_name = buf; - unsigned char *iv = buf + 4; - unsigned char *enc_len_p = iv + 12; - unsigned char *ticket = enc_len_p + 2; + unsigned char *iv = buf + TICKET_KEY_NAME_BYTES; + unsigned char *enc_len_p = iv + TICKET_IV_BYTES; + unsigned char *ticket = enc_len_p + TICKET_CRYPT_LEN_BYTES; unsigned char *tag; size_t enc_len, clear_len; if( ctx == NULL || ctx->f_rng == NULL ) return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); - /* See mbedtls_ssl_ticket_write() */ - if( len < 4 + 12 + 2 + 16 ) + if( len < TICKET_MIN_LEN ) return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); #if defined(MBEDTLS_THREADING_C) @@ -409,7 +452,7 @@ int mbedtls_ssl_ticket_parse( void *p_ticket, enc_len = ( enc_len_p[0] << 8 ) | enc_len_p[1]; tag = ticket + enc_len; - if( len != 4 + 12 + 2 + enc_len + 16 ) + if( len != TICKET_MIN_LEN + enc_len ) { ret = MBEDTLS_ERR_SSL_BAD_INPUT_DATA; goto cleanup; @@ -425,9 +468,13 @@ int mbedtls_ssl_ticket_parse( void *p_ticket, } /* Decrypt and authenticate */ - if( ( ret = mbedtls_cipher_auth_decrypt( &key->ctx, iv, 12, - key_name, 4 + 12 + 2, ticket, enc_len, - ticket, &clear_len, tag, 16 ) ) != 0 ) + if( ( ret = mbedtls_cipher_auth_decrypt( &key->ctx, + iv, TICKET_IV_BYTES, + /* Additional data: key name, IV and length */ + key_name, TICKET_ADD_DATA_LEN, + ticket, enc_len, + ticket, &clear_len, + tag, TICKET_AUTH_TAG_BYTES ) ) != 0 ) { if( ret == MBEDTLS_ERR_CIPHER_AUTH_FAILED ) ret = MBEDTLS_ERR_SSL_INVALID_MAC; |