X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=ssl%2Fs3_enc.c;h=f67f47a9333b17a662bad68fadf5530971b0d4ef;hp=d4d64d0e5e2b16888ea994c20cd2944428065209;hb=62ba834554d8795cb247a3a6fd630b56f1716709;hpb=349807608f31b20af01a342d0072bb92e0b036e2 diff --git a/ssl/s3_enc.c b/ssl/s3_enc.c index d4d64d0e5e..f67f47a933 100644 --- a/ssl/s3_enc.c +++ b/ssl/s3_enc.c @@ -1,146 +1,23 @@ -/* 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.] - */ -/* ==================================================================== - * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. - * - * 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 above 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 acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" - * - * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * openssl-core@openssl.org. - * - * 5. Products derived from this software may not be called "OpenSSL" - * nor may "OpenSSL" appear in their names without prior written - * permission of the OpenSSL Project. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit (http://www.openssl.org/)" - * - * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY - * EXPRESSED 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 OpenSSL PROJECT OR - * ITS 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. - * ==================================================================== - * - * This product includes cryptographic software written by Eric Young - * (eay@cryptsoft.com). This product includes software written by Tim - * Hudson (tjh@cryptsoft.com). - * - */ -/* ==================================================================== +/* + * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved. * Copyright 2005 Nokia. All rights reserved. * - * The portions of the attached software ("Contribution") is developed by - * Nokia Corporation and is licensed pursuant to the OpenSSL open source - * license. - * - * The Contribution, originally written by Mika Kousa and Pasi Eronen of - * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites - * support (see RFC 4279) to OpenSSL. - * - * No patent licenses or other rights except those expressly stated in - * the OpenSSL open source license shall be deemed granted or received - * expressly, by implication, estoppel, or otherwise. - * - * No assurances are provided by Nokia that the Contribution does not - * infringe the patent or other intellectual property rights of any third - * party or that the license provides you with all the necessary rights - * to make use of the Contribution. - * - * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN - * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA - * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY - * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR - * OTHERWISE. + * Licensed under the Apache License 2.0 (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html */ #include -#include "ssl_locl.h" +#include "ssl_local.h" #include #include +#include +#include "internal/cryptlib.h" static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num) { + const EVP_MD *md5 = NULL, *sha1 = NULL; EVP_MD_CTX *m5; EVP_MD_CTX *s1; unsigned char buf[16], smd[SHA_DIGEST_LENGTH]; @@ -152,41 +29,56 @@ static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num) c = os_toascii[c]; /* 'A' in ASCII */ #endif k = 0; + md5 = ssl_evp_md_fetch(s->ctx->libctx, NID_md5, s->ctx->propq); + sha1 = ssl_evp_md_fetch(s->ctx->libctx, NID_sha1, s->ctx->propq); m5 = EVP_MD_CTX_new(); s1 = EVP_MD_CTX_new(); - if (m5 == NULL || s1 == NULL) { - SSLerr(SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_MALLOC_FAILURE); + if (md5 == NULL || sha1 == NULL || m5 == NULL || s1 == NULL) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK, + ERR_R_MALLOC_FAILURE); goto err; } - EVP_MD_CTX_set_flags(m5, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); for (i = 0; (int)i < num; i += MD5_DIGEST_LENGTH) { k++; - if (k > sizeof buf) { + if (k > sizeof(buf)) { /* bug: 'buf' is too small for this ciphersuite */ - SSLerr(SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR); - return 0; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK, + ERR_R_INTERNAL_ERROR); + goto err; } for (j = 0; j < k; j++) buf[j] = c; c++; - EVP_DigestInit_ex(s1, EVP_sha1(), NULL); - EVP_DigestUpdate(s1, buf, k); - EVP_DigestUpdate(s1, s->session->master_key, - s->session->master_key_length); - EVP_DigestUpdate(s1, s->s3->server_random, SSL3_RANDOM_SIZE); - EVP_DigestUpdate(s1, s->s3->client_random, SSL3_RANDOM_SIZE); - EVP_DigestFinal_ex(s1, smd, NULL); - - EVP_DigestInit_ex(m5, EVP_md5(), NULL); - EVP_DigestUpdate(m5, s->session->master_key, - s->session->master_key_length); - EVP_DigestUpdate(m5, smd, SHA_DIGEST_LENGTH); + if (!EVP_DigestInit_ex(s1, sha1, NULL) + || !EVP_DigestUpdate(s1, buf, k) + || !EVP_DigestUpdate(s1, s->session->master_key, + s->session->master_key_length) + || !EVP_DigestUpdate(s1, s->s3.server_random, SSL3_RANDOM_SIZE) + || !EVP_DigestUpdate(s1, s->s3.client_random, SSL3_RANDOM_SIZE) + || !EVP_DigestFinal_ex(s1, smd, NULL) + || !EVP_DigestInit_ex(m5, md5, NULL) + || !EVP_DigestUpdate(m5, s->session->master_key, + s->session->master_key_length) + || !EVP_DigestUpdate(m5, smd, SHA_DIGEST_LENGTH)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK, + ERR_R_INTERNAL_ERROR); + goto err; + } if ((int)(i + MD5_DIGEST_LENGTH) > num) { - EVP_DigestFinal_ex(m5, smd, NULL); + if (!EVP_DigestFinal_ex(m5, smd, NULL)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR); + goto err; + } memcpy(km, smd, (num - i)); - } else - EVP_DigestFinal_ex(m5, km, NULL); + } else { + if (!EVP_DigestFinal_ex(m5, km, NULL)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR); + goto err; + } + } km += MD5_DIGEST_LENGTH; } @@ -195,14 +87,14 @@ static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num) err: EVP_MD_CTX_free(m5); EVP_MD_CTX_free(s1); + ssl_evp_md_free(md5); + ssl_evp_md_free(sha1); return ret; } int ssl3_change_cipher_state(SSL *s, int which) { unsigned char *p, *mac_secret; - unsigned char exp_key[EVP_MAX_KEY_LENGTH]; - unsigned char exp_iv[EVP_MAX_IV_LENGTH]; unsigned char *ms, *key, *iv; EVP_CIPHER_CTX *dd; const EVP_CIPHER *c; @@ -210,35 +102,44 @@ int ssl3_change_cipher_state(SSL *s, int which) COMP_METHOD *comp; #endif const EVP_MD *m; - int n, i, j, k, cl; + int mdi; + size_t n, i, j, k, cl; int reuse_dd = 0; - c = s->s3->tmp.new_sym_enc; - m = s->s3->tmp.new_hash; + c = s->s3.tmp.new_sym_enc; + m = s->s3.tmp.new_hash; /* m == NULL will lead to a crash later */ - OPENSSL_assert(m); + if (!ossl_assert(m != NULL)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, + ERR_R_INTERNAL_ERROR); + goto err; + } #ifndef OPENSSL_NO_COMP - if (s->s3->tmp.new_compression == NULL) + if (s->s3.tmp.new_compression == NULL) comp = NULL; else - comp = s->s3->tmp.new_compression->method; + comp = s->s3.tmp.new_compression->method; #endif if (which & SSL3_CC_READ) { - if (s->enc_read_ctx != NULL) + if (s->enc_read_ctx != NULL) { reuse_dd = 1; - else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == NULL) + } else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == NULL) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, + ERR_R_MALLOC_FAILURE); goto err; - else + } else { /* - * make sure it's intialized in case we exit later with an error + * make sure it's initialised in case we exit later with an error */ EVP_CIPHER_CTX_reset(s->enc_read_ctx); + } dd = s->enc_read_ctx; if (ssl_replace_hash(&s->read_hash, m) == NULL) { - SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); - goto err2; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, + ERR_R_INTERNAL_ERROR); + goto err; } #ifndef OPENSSL_NO_COMP /* COMPRESS */ @@ -247,30 +148,34 @@ int ssl3_change_cipher_state(SSL *s, int which) if (comp != NULL) { s->expand = COMP_CTX_new(comp); if (s->expand == NULL) { - SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, - SSL_R_COMPRESSION_LIBRARY_ERROR); - goto err2; - } - if (!RECORD_LAYER_setup_comp_buffer(&s->rlayer)) + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_SSL3_CHANGE_CIPHER_STATE, + SSL_R_COMPRESSION_LIBRARY_ERROR); goto err; + } } #endif RECORD_LAYER_reset_read_sequence(&s->rlayer); - mac_secret = &(s->s3->read_mac_secret[0]); + mac_secret = &(s->s3.read_mac_secret[0]); } else { - if (s->enc_write_ctx != NULL) + s->statem.enc_write_state = ENC_WRITE_STATE_INVALID; + if (s->enc_write_ctx != NULL) { reuse_dd = 1; - else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL) + } else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, + ERR_R_MALLOC_FAILURE); goto err; - else + } else { /* - * make sure it's intialized in case we exit later with an error + * make sure it's initialised in case we exit later with an error */ EVP_CIPHER_CTX_reset(s->enc_write_ctx); + } dd = s->enc_write_ctx; if (ssl_replace_hash(&s->write_hash, m) == NULL) { - SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); - goto err2; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, + ERR_R_MALLOC_FAILURE); + goto err; } #ifndef OPENSSL_NO_COMP /* COMPRESS */ @@ -279,23 +184,28 @@ int ssl3_change_cipher_state(SSL *s, int which) if (comp != NULL) { s->compress = COMP_CTX_new(comp); if (s->compress == NULL) { - SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, - SSL_R_COMPRESSION_LIBRARY_ERROR); - goto err2; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_SSL3_CHANGE_CIPHER_STATE, + SSL_R_COMPRESSION_LIBRARY_ERROR); + goto err; } } #endif RECORD_LAYER_reset_write_sequence(&s->rlayer); - mac_secret = &(s->s3->write_mac_secret[0]); + mac_secret = &(s->s3.write_mac_secret[0]); } if (reuse_dd) EVP_CIPHER_CTX_reset(dd); - p = s->s3->tmp.key_block; - i = EVP_MD_size(m); - if (i < 0) - goto err2; + p = s->s3.tmp.key_block; + mdi = EVP_MD_size(m); + if (mdi < 0) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, + ERR_R_INTERNAL_ERROR); + goto err; + } + i = mdi; cl = EVP_CIPHER_key_length(c); j = cl; k = EVP_CIPHER_iv_length(c); @@ -317,41 +227,24 @@ int ssl3_change_cipher_state(SSL *s, int which) n += k; } - if (n > s->s3->tmp.key_block_length) { - SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); - goto err2; + if (n > s->s3.tmp.key_block_length) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, + ERR_R_INTERNAL_ERROR); + goto err; } memcpy(mac_secret, ms, i); - EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE)); - -#ifdef OPENSSL_SSL_TRACE_CRYPTO - if (s->msg_callback) { - - int wh = which & SSL3_CC_WRITE ? - TLS1_RT_CRYPTO_WRITE : TLS1_RT_CRYPTO_READ; - s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_MAC, - mac_secret, EVP_MD_size(m), s, s->msg_callback_arg); - if (c->key_len) - s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_KEY, - key, c->key_len, s, s->msg_callback_arg); - if (k) { - s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_IV, - iv, k, s, s->msg_callback_arg); - } + if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, + ERR_R_INTERNAL_ERROR); + goto err; } -#endif - OPENSSL_cleanse(exp_key, sizeof(exp_key)); - OPENSSL_cleanse(exp_iv, sizeof(exp_iv)); - return (1); + s->statem.enc_write_state = ENC_WRITE_STATE_VALID; + return 1; err: - SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_MALLOC_FAILURE); - err2: - OPENSSL_cleanse(exp_key, sizeof(exp_key)); - OPENSSL_cleanse(exp_iv, sizeof(exp_iv)); - return (0); + return 0; } int ssl3_setup_key_block(SSL *s) @@ -363,20 +256,24 @@ int ssl3_setup_key_block(SSL *s) int ret = 0; SSL_COMP *comp; - if (s->s3->tmp.key_block_length != 0) - return (1); + if (s->s3.tmp.key_block_length != 0) + return 1; - if (!ssl_cipher_get_evp(s->session, &c, &hash, NULL, NULL, &comp, 0)) { - SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK, SSL_R_CIPHER_OR_HASH_UNAVAILABLE); - return (0); + if (!ssl_cipher_get_evp(s->ctx, s->session, &c, &hash, NULL, NULL, &comp, + 0)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK, + SSL_R_CIPHER_OR_HASH_UNAVAILABLE); + return 0; } - s->s3->tmp.new_sym_enc = c; - s->s3->tmp.new_hash = hash; + ssl_evp_cipher_free(s->s3.tmp.new_sym_enc); + s->s3.tmp.new_sym_enc = c; + ssl_evp_md_free(s->s3.tmp.new_hash); + s->s3.tmp.new_hash = hash; #ifdef OPENSSL_NO_COMP - s->s3->tmp.new_compression = NULL; + s->s3.tmp.new_compression = NULL; #else - s->s3->tmp.new_compression = comp; + s->s3.tmp.new_compression = comp; #endif num = EVP_MD_size(hash); @@ -388,12 +285,16 @@ int ssl3_setup_key_block(SSL *s) ssl3_cleanup_key_block(s); - if ((p = OPENSSL_malloc(num)) == NULL) - goto err; + if ((p = OPENSSL_malloc(num)) == NULL) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK, + ERR_R_MALLOC_FAILURE); + return 0; + } - s->s3->tmp.key_block_length = num; - s->s3->tmp.key_block = p; + s->s3.tmp.key_block_length = num; + s->s3.tmp.key_block = p; + /* Calls SSLfatal() as required */ ret = ssl3_generate_key_block(s, p, num); if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) { @@ -401,38 +302,42 @@ int ssl3_setup_key_block(SSL *s) * enable vulnerability countermeasure for CBC ciphers with known-IV * problem (http://www.openssl.org/~bodo/tls-cbc.txt) */ - s->s3->need_empty_fragments = 1; + s->s3.need_empty_fragments = 1; if (s->session->cipher != NULL) { if (s->session->cipher->algorithm_enc == SSL_eNULL) - s->s3->need_empty_fragments = 0; + s->s3.need_empty_fragments = 0; #ifndef OPENSSL_NO_RC4 if (s->session->cipher->algorithm_enc == SSL_RC4) - s->s3->need_empty_fragments = 0; + s->s3.need_empty_fragments = 0; #endif } } return ret; - - err: - SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE); - return (0); } void ssl3_cleanup_key_block(SSL *s) { - OPENSSL_clear_free(s->s3->tmp.key_block, s->s3->tmp.key_block_length); - s->s3->tmp.key_block = NULL; - s->s3->tmp.key_block_length = 0; + OPENSSL_clear_free(s->s3.tmp.key_block, s->s3.tmp.key_block_length); + s->s3.tmp.key_block = NULL; + s->s3.tmp.key_block_length = 0; } -void ssl3_init_finished_mac(SSL *s) +int ssl3_init_finished_mac(SSL *s) { + BIO *buf = BIO_new(BIO_s_mem()); + + if (buf == NULL) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_INIT_FINISHED_MAC, + ERR_R_MALLOC_FAILURE); + return 0; + } ssl3_free_digest_list(s); - s->s3->handshake_buffer = BIO_new(BIO_s_mem()); - (void)BIO_set_close(s->s3->handshake_buffer, BIO_CLOSE); + s->s3.handshake_buffer = buf; + (void)BIO_set_close(s->s3.handshake_buffer, BIO_CLOSE); + return 1; } /* @@ -442,18 +347,38 @@ void ssl3_init_finished_mac(SSL *s) void ssl3_free_digest_list(SSL *s) { - BIO_free(s->s3->handshake_buffer); - s->s3->handshake_buffer = NULL; - EVP_MD_CTX_free(s->s3->handshake_dgst); - s->s3->handshake_dgst = NULL; + BIO_free(s->s3.handshake_buffer); + s->s3.handshake_buffer = NULL; + EVP_MD_CTX_free(s->s3.handshake_dgst); + s->s3.handshake_dgst = NULL; } -void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len) +int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len) { - if (s->s3->handshake_dgst == NULL) - BIO_write(s->s3->handshake_buffer, (void *)buf, len); - else - EVP_DigestUpdate(s->s3->handshake_dgst, buf, len); + int ret; + + if (s->s3.handshake_dgst == NULL) { + /* Note: this writes to a memory BIO so a failure is a fatal error */ + if (len > INT_MAX) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, + SSL_R_OVERFLOW_ERROR); + return 0; + } + ret = BIO_write(s->s3.handshake_buffer, (void *)buf, (int)len); + if (ret <= 0 || ret != (int)len) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, + ERR_R_INTERNAL_ERROR); + return 0; + } + } else { + ret = EVP_DigestUpdate(s->s3.handshake_dgst, buf, len); + if (!ret) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, + ERR_R_INTERNAL_ERROR); + return 0; + } + } + return 1; } int ssl3_digest_cached_records(SSL *s, int keep) @@ -462,79 +387,107 @@ int ssl3_digest_cached_records(SSL *s, int keep) long hdatalen; void *hdata; - if (s->s3->handshake_dgst == NULL) { - hdatalen = BIO_get_mem_data(s->s3->handshake_buffer, &hdata); + if (s->s3.handshake_dgst == NULL) { + hdatalen = BIO_get_mem_data(s->s3.handshake_buffer, &hdata); if (hdatalen <= 0) { - SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, SSL_R_BAD_HANDSHAKE_LENGTH); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, + SSL_R_BAD_HANDSHAKE_LENGTH); return 0; } - s->s3->handshake_dgst = EVP_MD_CTX_new(); - if (s->s3->handshake_dgst == NULL) { - SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, ERR_R_MALLOC_FAILURE); + s->s3.handshake_dgst = EVP_MD_CTX_new(); + if (s->s3.handshake_dgst == NULL) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, + ERR_R_MALLOC_FAILURE); return 0; } md = ssl_handshake_md(s); - if (md == NULL) { - SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, ERR_R_INTERNAL_ERROR); + if (md == NULL || !EVP_DigestInit_ex(s->s3.handshake_dgst, md, NULL) + || !EVP_DigestUpdate(s->s3.handshake_dgst, hdata, hdatalen)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, + ERR_R_INTERNAL_ERROR); return 0; } - - EVP_DigestInit_ex(s->s3->handshake_dgst, md, NULL); - EVP_DigestUpdate(s->s3->handshake_dgst, hdata, hdatalen); - } if (keep == 0) { - BIO_free(s->s3->handshake_buffer); - s->s3->handshake_buffer = NULL; + BIO_free(s->s3.handshake_buffer); + s->s3.handshake_buffer = NULL; } return 1; } -int ssl3_final_finish_mac(SSL *s, const char *sender, int len, unsigned char *p) +void ssl3_digest_master_key_set_params(const SSL_SESSION *session, + OSSL_PARAM params[]) +{ + int n = 0; + params[n++] = OSSL_PARAM_construct_octet_string(OSSL_DIGEST_PARAM_SSL3_MS, + (void *)session->master_key, + session->master_key_length); + params[n++] = OSSL_PARAM_construct_end(); +} + +size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t len, + unsigned char *p) { int ret; EVP_MD_CTX *ctx = NULL; - if (!ssl3_digest_cached_records(s, 0)) + if (!ssl3_digest_cached_records(s, 0)) { + /* SSLfatal() already called */ return 0; + } - if (EVP_MD_CTX_type(s->s3->handshake_dgst) != NID_md5_sha1) { - SSLerr(SSL_F_SSL3_FINAL_FINISH_MAC, SSL_R_NO_REQUIRED_DIGEST); + if (EVP_MD_CTX_type(s->s3.handshake_dgst) != NID_md5_sha1) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, + SSL_R_NO_REQUIRED_DIGEST); return 0; } ctx = EVP_MD_CTX_new(); if (ctx == NULL) { - SSLerr(SSL_F_SSL3_FINAL_FINISH_MAC, ERR_R_MALLOC_FAILURE); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, + ERR_R_MALLOC_FAILURE); return 0; } - EVP_MD_CTX_copy_ex(ctx, s->s3->handshake_dgst); + if (!EVP_MD_CTX_copy_ex(ctx, s->s3.handshake_dgst)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, + ERR_R_INTERNAL_ERROR); + ret = 0; + goto err; + } ret = EVP_MD_CTX_size(ctx); if (ret < 0) { - EVP_MD_CTX_reset(ctx); - return 0; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, + ERR_R_INTERNAL_ERROR); + ret = 0; + goto err; } - if ((sender != NULL && EVP_DigestUpdate(ctx, sender, len) <= 0) - || EVP_MD_CTX_ctrl(ctx, EVP_CTRL_SSL3_MASTER_SECRET, - s->session->master_key_length, - s->session->master_key) <= 0 + if (sender != NULL) { + OSSL_PARAM digest_cmd_params[3]; + + ssl3_digest_master_key_set_params(s->session, digest_cmd_params); + + if (EVP_DigestUpdate(ctx, sender, len) <= 0 + || EVP_MD_CTX_set_params(ctx, digest_cmd_params) <= 0 || EVP_DigestFinal_ex(ctx, p, NULL) <= 0) { - SSLerr(SSL_F_SSL3_FINAL_FINISH_MAC, ERR_R_INTERNAL_ERROR); - ret = 0; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, + ERR_R_INTERNAL_ERROR); + ret = 0; + } } + err: EVP_MD_CTX_free(ctx); return ret; } int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, - int len) + size_t len, size_t *secret_size) { static const unsigned char *salt[3] = { #ifndef CHARSET_EBCDIC @@ -549,125 +502,116 @@ int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, }; unsigned char buf[EVP_MAX_MD_SIZE]; EVP_MD_CTX *ctx = EVP_MD_CTX_new(); - int i, ret = 0; + int i, ret = 1; unsigned int n; -#ifdef OPENSSL_SSL_TRACE_CRYPTO - unsigned char *tmpout = out; -#endif + size_t ret_secret_size = 0; if (ctx == NULL) { - SSLerr(SSL_F_SSL3_GENERATE_MASTER_SECRET, ERR_R_MALLOC_FAILURE); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_MASTER_SECRET, + ERR_R_MALLOC_FAILURE); return 0; } for (i = 0; i < 3; i++) { if (EVP_DigestInit_ex(ctx, s->ctx->sha1, NULL) <= 0 - || EVP_DigestUpdate(ctx, salt[i], - strlen((const char *)salt[i])) <= 0 - || EVP_DigestUpdate(ctx, p, len) <= 0 - || EVP_DigestUpdate(ctx, &(s->s3->client_random[0]), - SSL3_RANDOM_SIZE) <= 0 - || EVP_DigestUpdate(ctx, &(s->s3->server_random[0]), - SSL3_RANDOM_SIZE) <= 0 - || EVP_DigestFinal_ex(ctx, buf, &n) <= 0 - - || EVP_DigestInit_ex(ctx, s->ctx->md5, NULL) <= 0 - || EVP_DigestUpdate(ctx, p, len) <= 0 - || EVP_DigestUpdate(ctx, buf, n) <= 0 - || EVP_DigestFinal_ex(ctx, out, &n) <= 0) { - SSLerr(SSL_F_SSL3_GENERATE_MASTER_SECRET, ERR_R_INTERNAL_ERROR); + || EVP_DigestUpdate(ctx, salt[i], + strlen((const char *)salt[i])) <= 0 + || EVP_DigestUpdate(ctx, p, len) <= 0 + || EVP_DigestUpdate(ctx, &(s->s3.client_random[0]), + SSL3_RANDOM_SIZE) <= 0 + || EVP_DigestUpdate(ctx, &(s->s3.server_random[0]), + SSL3_RANDOM_SIZE) <= 0 + /* TODO(size_t) : convert me */ + || EVP_DigestFinal_ex(ctx, buf, &n) <= 0 + || EVP_DigestInit_ex(ctx, s->ctx->md5, NULL) <= 0 + || EVP_DigestUpdate(ctx, p, len) <= 0 + || EVP_DigestUpdate(ctx, buf, n) <= 0 + || EVP_DigestFinal_ex(ctx, out, &n) <= 0) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_SSL3_GENERATE_MASTER_SECRET, ERR_R_INTERNAL_ERROR); ret = 0; break; } out += n; - ret += n; + ret_secret_size += n; } EVP_MD_CTX_free(ctx); -#ifdef OPENSSL_SSL_TRACE_CRYPTO - if (ret > 0 && s->msg_callback) { - s->msg_callback(2, s->version, TLS1_RT_CRYPTO_PREMASTER, - p, len, s, s->msg_callback_arg); - s->msg_callback(2, s->version, TLS1_RT_CRYPTO_CLIENT_RANDOM, - s->s3->client_random, SSL3_RANDOM_SIZE, - s, s->msg_callback_arg); - s->msg_callback(2, s->version, TLS1_RT_CRYPTO_SERVER_RANDOM, - s->s3->server_random, SSL3_RANDOM_SIZE, - s, s->msg_callback_arg); - s->msg_callback(2, s->version, TLS1_RT_CRYPTO_MASTER, - tmpout, SSL3_MASTER_SECRET_SIZE, - s, s->msg_callback_arg); - } -#endif OPENSSL_cleanse(buf, sizeof(buf)); - return (ret); + if (ret) + *secret_size = ret_secret_size; + return ret; } int ssl3_alert_code(int code) { switch (code) { case SSL_AD_CLOSE_NOTIFY: - return (SSL3_AD_CLOSE_NOTIFY); + return SSL3_AD_CLOSE_NOTIFY; case SSL_AD_UNEXPECTED_MESSAGE: - return (SSL3_AD_UNEXPECTED_MESSAGE); + return SSL3_AD_UNEXPECTED_MESSAGE; case SSL_AD_BAD_RECORD_MAC: - return (SSL3_AD_BAD_RECORD_MAC); + return SSL3_AD_BAD_RECORD_MAC; case SSL_AD_DECRYPTION_FAILED: - return (SSL3_AD_BAD_RECORD_MAC); + return SSL3_AD_BAD_RECORD_MAC; case SSL_AD_RECORD_OVERFLOW: - return (SSL3_AD_BAD_RECORD_MAC); + return SSL3_AD_BAD_RECORD_MAC; case SSL_AD_DECOMPRESSION_FAILURE: - return (SSL3_AD_DECOMPRESSION_FAILURE); + return SSL3_AD_DECOMPRESSION_FAILURE; case SSL_AD_HANDSHAKE_FAILURE: - return (SSL3_AD_HANDSHAKE_FAILURE); + return SSL3_AD_HANDSHAKE_FAILURE; case SSL_AD_NO_CERTIFICATE: - return (SSL3_AD_NO_CERTIFICATE); + return SSL3_AD_NO_CERTIFICATE; case SSL_AD_BAD_CERTIFICATE: - return (SSL3_AD_BAD_CERTIFICATE); + return SSL3_AD_BAD_CERTIFICATE; case SSL_AD_UNSUPPORTED_CERTIFICATE: - return (SSL3_AD_UNSUPPORTED_CERTIFICATE); + return SSL3_AD_UNSUPPORTED_CERTIFICATE; case SSL_AD_CERTIFICATE_REVOKED: - return (SSL3_AD_CERTIFICATE_REVOKED); + return SSL3_AD_CERTIFICATE_REVOKED; case SSL_AD_CERTIFICATE_EXPIRED: - return (SSL3_AD_CERTIFICATE_EXPIRED); + return SSL3_AD_CERTIFICATE_EXPIRED; case SSL_AD_CERTIFICATE_UNKNOWN: - return (SSL3_AD_CERTIFICATE_UNKNOWN); + return SSL3_AD_CERTIFICATE_UNKNOWN; case SSL_AD_ILLEGAL_PARAMETER: - return (SSL3_AD_ILLEGAL_PARAMETER); + return SSL3_AD_ILLEGAL_PARAMETER; case SSL_AD_UNKNOWN_CA: - return (SSL3_AD_BAD_CERTIFICATE); + return SSL3_AD_BAD_CERTIFICATE; case SSL_AD_ACCESS_DENIED: - return (SSL3_AD_HANDSHAKE_FAILURE); + return SSL3_AD_HANDSHAKE_FAILURE; case SSL_AD_DECODE_ERROR: - return (SSL3_AD_HANDSHAKE_FAILURE); + return SSL3_AD_HANDSHAKE_FAILURE; case SSL_AD_DECRYPT_ERROR: - return (SSL3_AD_HANDSHAKE_FAILURE); + return SSL3_AD_HANDSHAKE_FAILURE; case SSL_AD_EXPORT_RESTRICTION: - return (SSL3_AD_HANDSHAKE_FAILURE); + return SSL3_AD_HANDSHAKE_FAILURE; case SSL_AD_PROTOCOL_VERSION: - return (SSL3_AD_HANDSHAKE_FAILURE); + return SSL3_AD_HANDSHAKE_FAILURE; case SSL_AD_INSUFFICIENT_SECURITY: - return (SSL3_AD_HANDSHAKE_FAILURE); + return SSL3_AD_HANDSHAKE_FAILURE; case SSL_AD_INTERNAL_ERROR: - return (SSL3_AD_HANDSHAKE_FAILURE); + return SSL3_AD_HANDSHAKE_FAILURE; case SSL_AD_USER_CANCELLED: - return (SSL3_AD_HANDSHAKE_FAILURE); + return SSL3_AD_HANDSHAKE_FAILURE; case SSL_AD_NO_RENEGOTIATION: - return (-1); /* Don't send it :-) */ + return -1; /* Don't send it :-) */ case SSL_AD_UNSUPPORTED_EXTENSION: - return (SSL3_AD_HANDSHAKE_FAILURE); + return SSL3_AD_HANDSHAKE_FAILURE; case SSL_AD_CERTIFICATE_UNOBTAINABLE: - return (SSL3_AD_HANDSHAKE_FAILURE); + return SSL3_AD_HANDSHAKE_FAILURE; case SSL_AD_UNRECOGNIZED_NAME: - return (SSL3_AD_HANDSHAKE_FAILURE); + return SSL3_AD_HANDSHAKE_FAILURE; case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: - return (SSL3_AD_HANDSHAKE_FAILURE); + return SSL3_AD_HANDSHAKE_FAILURE; case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: - return (SSL3_AD_HANDSHAKE_FAILURE); + return SSL3_AD_HANDSHAKE_FAILURE; case SSL_AD_UNKNOWN_PSK_IDENTITY: - return (TLS1_AD_UNKNOWN_PSK_IDENTITY); + return TLS1_AD_UNKNOWN_PSK_IDENTITY; case SSL_AD_INAPPROPRIATE_FALLBACK: - return (TLS1_AD_INAPPROPRIATE_FALLBACK); + return TLS1_AD_INAPPROPRIATE_FALLBACK; + case SSL_AD_NO_APPLICATION_PROTOCOL: + return TLS1_AD_NO_APPLICATION_PROTOCOL; + case SSL_AD_CERTIFICATE_REQUIRED: + return SSL_AD_HANDSHAKE_FAILURE; default: - return (-1); + return -1; } }