X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=ssl%2Fs3_enc.c;h=6d78aa1a2e95bdb5814b028d30e7538745c2bf36;hp=13ebfc6996f48c968c81113abd14f668a60b3ebe;hb=d47eb76cd5fef2495c23705733d7034370063556;hpb=2acc020b770920657a169bf6be4ff12b254255e6 diff --git a/ssl/s3_enc.c b/ssl/s3_enc.c index 13ebfc6996..6d78aa1a2e 100644 --- a/ssl/s3_enc.c +++ b/ssl/s3_enc.c @@ -1,932 +1,599 @@ -/* ssl/s3_enc.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.] - */ -/* ==================================================================== - * 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 OpenSSL license (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 #include +#include "internal/cryptlib.h" -static unsigned char ssl3_pad_1[48]={ - 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36, - 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36, - 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36, - 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36, - 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36, - 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36 }; - -static unsigned char ssl3_pad_2[48]={ - 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c, - 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c, - 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c, - 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c, - 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c, - 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c }; -static int ssl3_handshake_mac(SSL *s, int md_nid, - const char *sender, int len, unsigned char *p); static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num) - { - EVP_MD_CTX m5; - EVP_MD_CTX s1; - unsigned char buf[16],smd[SHA_DIGEST_LENGTH]; - unsigned char c='A'; - unsigned int i,j,k; +{ + EVP_MD_CTX *m5; + EVP_MD_CTX *s1; + unsigned char buf[16], smd[SHA_DIGEST_LENGTH]; + unsigned char c = 'A'; + unsigned int i, j, k; + int ret = 0; #ifdef CHARSET_EBCDIC - c = os_toascii[c]; /*'A' in ASCII */ + c = os_toascii[c]; /* 'A' in ASCII */ #endif - k=0; - EVP_MD_CTX_init(&m5); - EVP_MD_CTX_set_flags(&m5, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); - EVP_MD_CTX_init(&s1); - for (i=0; (int)i sizeof buf) - { - /* bug: 'buf' is too small for this ciphersuite */ - SSLerr(SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR); - return 0; - } - - for (j=0; jsession->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 ((int)(i+MD5_DIGEST_LENGTH) > num) - { - EVP_DigestFinal_ex(&m5,smd,NULL); - memcpy(km,smd,(num-i)); - } - else - EVP_DigestFinal_ex(&m5,km,NULL); - - km+=MD5_DIGEST_LENGTH; - } - OPENSSL_cleanse(smd,SHA_DIGEST_LENGTH); - EVP_MD_CTX_cleanup(&m5); - EVP_MD_CTX_cleanup(&s1); - return 1; - } + k = 0; + m5 = EVP_MD_CTX_new(); + s1 = EVP_MD_CTX_new(); + if (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)) { + /* bug: 'buf' is too small for this ciphersuite */ + 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++; + if (!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)) { + 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) { + 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 { + 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; + } + OPENSSL_cleanse(smd, sizeof(smd)); + ret = 1; + err: + EVP_MD_CTX_free(m5); + EVP_MD_CTX_free(s1); + 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,*er1,*er2; - EVP_CIPHER_CTX *dd; - const EVP_CIPHER *c; +{ + 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; #ifndef OPENSSL_NO_COMP - COMP_METHOD *comp; + COMP_METHOD *comp; #endif - const EVP_MD *m; - EVP_MD_CTX md; - int is_exp,n,i,j,k,cl; - int reuse_dd = 0; - - is_exp=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher); - c=s->s3->tmp.new_sym_enc; - m=s->s3->tmp.new_hash; - /* m == NULL will lead to a crash later */ - OPENSSL_assert(m); + const EVP_MD *m; + 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; + /* m == NULL will lead to a crash later */ + 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) - comp=NULL; - else - comp=s->s3->tmp.new_compression->method; + if (s->s3->tmp.new_compression == NULL) + comp = NULL; + else + comp = s->s3->tmp.new_compression->method; #endif - if (which & SSL3_CC_READ) - { - if (s->enc_read_ctx != NULL) - reuse_dd = 1; - else if ((s->enc_read_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL) - goto err; - else - /* make sure it's intialized in case we exit later with an error */ - EVP_CIPHER_CTX_init(s->enc_read_ctx); - dd= s->enc_read_ctx; - - ssl_replace_hash(&s->read_hash,m); + if (which & SSL3_CC_READ) { + if (s->enc_read_ctx != NULL) { + reuse_dd = 1; + } 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 { + /* + * 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) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, + ERR_R_INTERNAL_ERROR); + goto err; + } #ifndef OPENSSL_NO_COMP - /* COMPRESS */ - if (s->expand != NULL) - { - COMP_CTX_free(s->expand); - s->expand=NULL; - } - 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 (s->s3->rrec.comp == NULL) - s->s3->rrec.comp=(unsigned char *) - OPENSSL_malloc(SSL3_RT_MAX_PLAIN_LENGTH); - if (s->s3->rrec.comp == NULL) - goto err; - } + /* COMPRESS */ + COMP_CTX_free(s->expand); + s->expand = NULL; + if (comp != NULL) { + s->expand = COMP_CTX_new(comp); + if (s->expand == NULL) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_SSL3_CHANGE_CIPHER_STATE, + SSL_R_COMPRESSION_LIBRARY_ERROR); + goto err; + } + } #endif - memset(&(s->s3->read_sequence[0]),0,8); - mac_secret= &(s->s3->read_mac_secret[0]); - } - else - { - if (s->enc_write_ctx != NULL) - reuse_dd = 1; - else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL) - goto err; - else - /* make sure it's intialized in case we exit later with an error */ - EVP_CIPHER_CTX_init(s->enc_write_ctx); - dd= s->enc_write_ctx; - ssl_replace_hash(&s->write_hash,m); + RECORD_LAYER_reset_read_sequence(&s->rlayer); + mac_secret = &(s->s3->read_mac_secret[0]); + } else { + s->statem.invalid_enc_write_ctx = 1; + if (s->enc_write_ctx != NULL) { + reuse_dd = 1; + } 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 { + /* + * 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) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, + ERR_R_MALLOC_FAILURE); + goto err; + } #ifndef OPENSSL_NO_COMP - /* COMPRESS */ - if (s->compress != NULL) - { - COMP_CTX_free(s->compress); - s->compress=NULL; - } - 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; - } - } -#endif - memset(&(s->s3->write_sequence[0]),0,8); - mac_secret= &(s->s3->write_mac_secret[0]); - } - - if (reuse_dd) - EVP_CIPHER_CTX_cleanup(dd); - - p=s->s3->tmp.key_block; - i=EVP_MD_size(m); - if (i < 0) - goto err2; - cl=EVP_CIPHER_key_length(c); - j=is_exp ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ? - cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl; - /* Was j=(is_exp)?5:EVP_CIPHER_key_length(c); */ - k=EVP_CIPHER_iv_length(c); - if ( (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) || - (which == SSL3_CHANGE_CIPHER_SERVER_READ)) - { - ms= &(p[ 0]); n=i+i; - key= &(p[ n]); n+=j+j; - iv= &(p[ n]); n+=k+k; - er1= &(s->s3->client_random[0]); - er2= &(s->s3->server_random[0]); - } - else - { - n=i; - ms= &(p[ n]); n+=i+j; - key= &(p[ n]); n+=j+k; - iv= &(p[ n]); n+=k; - er1= &(s->s3->server_random[0]); - er2= &(s->s3->client_random[0]); - } - - if (n > s->s3->tmp.key_block_length) - { - SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,ERR_R_INTERNAL_ERROR); - goto err2; - } - - EVP_MD_CTX_init(&md); - memcpy(mac_secret,ms,i); - if (is_exp) - { - /* In here I set both the read and write key/iv to the - * same value since only the correct one will be used :-). - */ - EVP_DigestInit_ex(&md,EVP_md5(), NULL); - EVP_DigestUpdate(&md,key,j); - EVP_DigestUpdate(&md,er1,SSL3_RANDOM_SIZE); - EVP_DigestUpdate(&md,er2,SSL3_RANDOM_SIZE); - EVP_DigestFinal_ex(&md,&(exp_key[0]),NULL); - key= &(exp_key[0]); - - if (k > 0) - { - EVP_DigestInit_ex(&md,EVP_md5(), NULL); - EVP_DigestUpdate(&md,er1,SSL3_RANDOM_SIZE); - EVP_DigestUpdate(&md,er2,SSL3_RANDOM_SIZE); - EVP_DigestFinal_ex(&md,&(exp_iv[0]),NULL); - iv= &(exp_iv[0]); - } - } - - s->session->key_arg_length=0; - - 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); - } - } + /* COMPRESS */ + COMP_CTX_free(s->compress); + s->compress = NULL; + if (comp != NULL) { + s->compress = COMP_CTX_new(comp); + if (s->compress == NULL) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_SSL3_CHANGE_CIPHER_STATE, + SSL_R_COMPRESSION_LIBRARY_ERROR); + goto err; + } + } #endif - - OPENSSL_cleanse(&(exp_key[0]),sizeof(exp_key)); - OPENSSL_cleanse(&(exp_iv[0]),sizeof(exp_iv)); - EVP_MD_CTX_cleanup(&md); - return(1); -err: - SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE); -err2: - return(0); - } + RECORD_LAYER_reset_write_sequence(&s->rlayer); + mac_secret = &(s->s3->write_mac_secret[0]); + } + + if (reuse_dd) + EVP_CIPHER_CTX_reset(dd); + + 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); + if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) || + (which == SSL3_CHANGE_CIPHER_SERVER_READ)) { + ms = &(p[0]); + n = i + i; + key = &(p[n]); + n += j + j; + iv = &(p[n]); + n += k + k; + } else { + n = i; + ms = &(p[n]); + n += i + j; + key = &(p[n]); + n += j + k; + iv = &(p[n]); + n += k; + } + + 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); + + 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; + } + + s->statem.invalid_enc_write_ctx = 0; + OPENSSL_cleanse(exp_key, sizeof(exp_key)); + OPENSSL_cleanse(exp_iv, sizeof(exp_iv)); + return 1; + err: + OPENSSL_cleanse(exp_key, sizeof(exp_key)); + OPENSSL_cleanse(exp_iv, sizeof(exp_iv)); + return 0; +} int ssl3_setup_key_block(SSL *s) - { - unsigned char *p; - const EVP_CIPHER *c; - const EVP_MD *hash; - int num; - int ret = 0; - SSL_COMP *comp; - - if (s->s3->tmp.key_block_length != 0) - return(1); - - if (!ssl_cipher_get_evp(s->session,&c,&hash,NULL,NULL,&comp)) - { - SSLerr(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; +{ + unsigned char *p; + const EVP_CIPHER *c; + const EVP_MD *hash; + int num; + int ret = 0; + SSL_COMP *comp; + + if (s->s3->tmp.key_block_length != 0) + return 1; + + if (!ssl_cipher_get_evp(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; #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); - if (num < 0) - return 0; + num = EVP_MD_size(hash); + if (num < 0) + return 0; + + num = EVP_CIPHER_key_length(c) + num + EVP_CIPHER_iv_length(c); + num *= 2; - num=EVP_CIPHER_key_length(c)+num+EVP_CIPHER_iv_length(c); - num*=2; + ssl3_cleanup_key_block(s); - ssl3_cleanup_key_block(s); + if ((p = OPENSSL_malloc(num)) == NULL) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK, + ERR_R_MALLOC_FAILURE); + return 0; + } - if ((p=OPENSSL_malloc(num)) == NULL) - goto err; + 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); - ret = ssl3_generate_key_block(s,p,num); + if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) { + /* + * enable vulnerability countermeasure for CBC ciphers with known-IV + * problem (http://www.openssl.org/~bodo/tls-cbc.txt) + */ + s->s3->need_empty_fragments = 1; - if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) - { - /* enable vulnerability countermeasure for CBC ciphers with - * known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt) - */ - 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; - if (s->session->cipher != NULL) - { - if (s->session->cipher->algorithm_enc == SSL_eNULL) - s->s3->need_empty_fragments = 0; - #ifndef OPENSSL_NO_RC4 - if (s->session->cipher->algorithm_enc == SSL_RC4) - s->s3->need_empty_fragments = 0; + if (s->session->cipher->algorithm_enc == SSL_RC4) + s->s3->need_empty_fragments = 0; #endif - } - } + } + } - return ret; - -err: - SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE); - return(0); - } + return ret; +} void ssl3_cleanup_key_block(SSL *s) - { - if (s->s3->tmp.key_block != NULL) - { - OPENSSL_cleanse(s->s3->tmp.key_block, - s->s3->tmp.key_block_length); - OPENSSL_free(s->s3->tmp.key_block); - s->s3->tmp.key_block=NULL; - } - s->s3->tmp.key_block_length=0; - } - -int ssl3_enc(SSL *s, int send) - { - SSL3_RECORD *rec; - EVP_CIPHER_CTX *ds; - unsigned long l; - int bs,i,mac_size=0; - const EVP_CIPHER *enc; - - if (send) - { - ds=s->enc_write_ctx; - rec= &(s->s3->wrec); - if (s->enc_write_ctx == NULL) - enc=NULL; - else - enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx); - } - else - { - ds=s->enc_read_ctx; - rec= &(s->s3->rrec); - if (s->enc_read_ctx == NULL) - enc=NULL; - else - enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx); - } - - if ((s->session == NULL) || (ds == NULL) || - (enc == NULL)) - { - memmove(rec->data,rec->input,rec->length); - rec->input=rec->data; - } - else - { - l=rec->length; - bs=EVP_CIPHER_block_size(ds->cipher); - - /* COMPRESS */ - - if ((bs != 1) && send) - { - i=bs-((int)l%bs); - - /* we need to add 'i-1' padding bytes */ - l+=i; - /* the last of these zero bytes will be overwritten - * with the padding length. */ - memset(&rec->input[rec->length], 0, i); - rec->length+=i; - rec->input[l-1]=(i-1); - } - - if (!send) - { - if (l == 0 || l%bs != 0) - { - SSLerr(SSL_F_SSL3_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG); - ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED); - return 0; - } - /* otherwise, rec->length >= bs */ - } - - EVP_Cipher(ds,rec->data,rec->input,l); - - rec->orig_len = rec->length; - - if (EVP_MD_CTX_md(s->read_hash) != NULL) - mac_size = EVP_MD_CTX_size(s->read_hash); - if ((bs != 1) && !send) - return ssl3_cbc_remove_padding(s, rec, bs, mac_size); - } - return(1); - } - -void ssl3_init_finished_mac(SSL *s) - { - if (s->s3->handshake_buffer) BIO_free(s->s3->handshake_buffer); - if (s->s3->handshake_dgst) ssl3_free_digest_list(s); - s->s3->handshake_buffer=BIO_new(BIO_s_mem()); - (void)BIO_set_close(s->s3->handshake_buffer,BIO_CLOSE); - } - -void ssl3_free_digest_list(SSL *s) - { - int i; - if (!s->s3->handshake_dgst) return; - for (i=0;is3->handshake_dgst[i]) - EVP_MD_CTX_destroy(s->s3->handshake_dgst[i]); - } - OPENSSL_free(s->s3->handshake_dgst); - s->s3->handshake_dgst=NULL; - } - - - -void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len) - { - if (s->s3->handshake_buffer && !(s->s3->flags & TLS1_FLAGS_KEEP_HANDSHAKE)) - { - BIO_write (s->s3->handshake_buffer,(void *)buf,len); - } - else - { - int i; - for (i=0;i< SSL_MAX_DIGEST;i++) - { - if (s->s3->handshake_dgst[i]!= NULL) - EVP_DigestUpdate(s->s3->handshake_dgst[i],buf,len); - } - } - } - -int ssl3_digest_cached_records(SSL *s) - { - int i; - long mask; - const EVP_MD *md; - long hdatalen; - void *hdata; - - /* Allocate handshake_dgst array */ - ssl3_free_digest_list(s); - s->s3->handshake_dgst = OPENSSL_malloc(SSL_MAX_DIGEST * sizeof(EVP_MD_CTX *)); - memset(s->s3->handshake_dgst,0,SSL_MAX_DIGEST *sizeof(EVP_MD_CTX *)); - 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); - return 0; - } - - /* Loop through bitso of algorithm2 field and create MD_CTX-es */ - for (i=0;ssl_get_handshake_digest(i,&mask,&md); i++) - { - if ((mask & ssl_get_algorithm2(s)) && md) - { - s->s3->handshake_dgst[i]=EVP_MD_CTX_create(); -#ifdef OPENSSL_FIPS - if (EVP_MD_nid(md) == NID_md5) - { - EVP_MD_CTX_set_flags(s->s3->handshake_dgst[i], - EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); - } -#endif - EVP_DigestInit_ex(s->s3->handshake_dgst[i],md,NULL); - EVP_DigestUpdate(s->s3->handshake_dgst[i],hdata,hdatalen); - } - else - { - s->s3->handshake_dgst[i]=NULL; - } - } - if (!(s->s3->flags & TLS1_FLAGS_KEEP_HANDSHAKE)) - { - /* Free handshake_buffer BIO */ - BIO_free(s->s3->handshake_buffer); - s->s3->handshake_buffer = NULL; - } - - return 1; - } - -int ssl3_cert_verify_mac(SSL *s, int md_nid, unsigned char *p) - { - return(ssl3_handshake_mac(s,md_nid,NULL,0,p)); - } -int ssl3_final_finish_mac(SSL *s, - const char *sender, int len, unsigned char *p) - { - int ret; - ret=ssl3_handshake_mac(s,NID_md5,sender,len,p); - p+=ret; - ret+=ssl3_handshake_mac(s,NID_sha1,sender,len,p); - return(ret); - } -static int ssl3_handshake_mac(SSL *s, int md_nid, - const char *sender, int len, unsigned char *p) - { - unsigned int ret; - int npad,n; - unsigned int i; - unsigned char md_buf[EVP_MAX_MD_SIZE]; - EVP_MD_CTX ctx,*d=NULL; - - if (s->s3->handshake_buffer) - if (!ssl3_digest_cached_records(s)) - return 0; - - /* Search for digest of specified type in the handshake_dgst - * array*/ - for (i=0;is3->handshake_dgst[i]&&EVP_MD_CTX_type(s->s3->handshake_dgst[i])==md_nid) - { - d=s->s3->handshake_dgst[i]; - break; - } - } - if (!d) { - SSLerr(SSL_F_SSL3_HANDSHAKE_MAC,SSL_R_NO_REQUIRED_DIGEST); - return 0; - } - EVP_MD_CTX_init(&ctx); - EVP_MD_CTX_set_flags(&ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); - EVP_MD_CTX_copy_ex(&ctx,d); - n=EVP_MD_CTX_size(&ctx); - if (n < 0) - return 0; - - npad=(48/n)*n; - if (sender != NULL) - EVP_DigestUpdate(&ctx,sender,len); - EVP_DigestUpdate(&ctx,s->session->master_key, - s->session->master_key_length); - EVP_DigestUpdate(&ctx,ssl3_pad_1,npad); - EVP_DigestFinal_ex(&ctx,md_buf,&i); - - EVP_DigestInit_ex(&ctx,EVP_MD_CTX_md(&ctx), NULL); - EVP_DigestUpdate(&ctx,s->session->master_key, - s->session->master_key_length); - EVP_DigestUpdate(&ctx,ssl3_pad_2,npad); - EVP_DigestUpdate(&ctx,md_buf,i); - EVP_DigestFinal_ex(&ctx,p,&ret); - - EVP_MD_CTX_cleanup(&ctx); - - return((int)ret); - } - -int n_ssl3_mac(SSL *ssl, unsigned char *md, int send) - { - SSL3_RECORD *rec; - unsigned char *mac_sec,*seq; - EVP_MD_CTX md_ctx; - const EVP_MD_CTX *hash; - unsigned char *p,rec_char; - size_t md_size; - int npad; - int t; - - if (send) - { - rec= &(ssl->s3->wrec); - mac_sec= &(ssl->s3->write_mac_secret[0]); - seq= &(ssl->s3->write_sequence[0]); - hash=ssl->write_hash; - } - else - { - rec= &(ssl->s3->rrec); - mac_sec= &(ssl->s3->read_mac_secret[0]); - seq= &(ssl->s3->read_sequence[0]); - hash=ssl->read_hash; - } - - t=EVP_MD_CTX_size(hash); - if (t < 0) - return -1; - md_size=t; - npad=(48/md_size)*md_size; - - if (!send && - EVP_CIPHER_CTX_mode(ssl->enc_read_ctx) == EVP_CIPH_CBC_MODE && - ssl3_cbc_record_digest_supported(hash)) - { - /* This is a CBC-encrypted record. We must avoid leaking any - * timing-side channel information about how many blocks of - * data we are hashing because that gives an attacker a - * timing-oracle. */ - - /* npad is, at most, 48 bytes and that's with MD5: - * 16 + 48 + 8 (sequence bytes) + 1 + 2 = 75. - * - * With SHA-1 (the largest hash speced for SSLv3) the hash size - * goes up 4, but npad goes down by 8, resulting in a smaller - * total size. */ - unsigned char header[75]; - unsigned j = 0; - memcpy(header+j, mac_sec, md_size); - j += md_size; - memcpy(header+j, ssl3_pad_1, npad); - j += npad; - memcpy(header+j, seq, 8); - j += 8; - header[j++] = rec->type; - header[j++] = rec->length >> 8; - header[j++] = rec->length & 0xff; - - ssl3_cbc_digest_record( - hash, - md, &md_size, - header, rec->input, - rec->length + md_size, rec->orig_len, - mac_sec, md_size, - 1 /* is SSLv3 */); - } - else - { - unsigned int md_size_u; - /* Chop the digest off the end :-) */ - EVP_MD_CTX_init(&md_ctx); - - EVP_MD_CTX_copy_ex( &md_ctx,hash); - EVP_DigestUpdate(&md_ctx,mac_sec,md_size); - EVP_DigestUpdate(&md_ctx,ssl3_pad_1,npad); - EVP_DigestUpdate(&md_ctx,seq,8); - rec_char=rec->type; - EVP_DigestUpdate(&md_ctx,&rec_char,1); - p=md; - s2n(rec->length,p); - EVP_DigestUpdate(&md_ctx,md,2); - EVP_DigestUpdate(&md_ctx,rec->input,rec->length); - EVP_DigestFinal_ex( &md_ctx,md,NULL); - - EVP_MD_CTX_copy_ex( &md_ctx,hash); - EVP_DigestUpdate(&md_ctx,mac_sec,md_size); - EVP_DigestUpdate(&md_ctx,ssl3_pad_2,npad); - EVP_DigestUpdate(&md_ctx,md,md_size); - EVP_DigestFinal_ex( &md_ctx,md,&md_size_u); - md_size = md_size_u; - - EVP_MD_CTX_cleanup(&md_ctx); - } - - ssl3_record_sequence_update(seq); - return(md_size); - } - -void ssl3_record_sequence_update(unsigned char *seq) - { - int i; - - for (i=7; i>=0; i--) - { - ++seq[i]; - if (seq[i] != 0) break; - } - } +{ + 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; +} + +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 = buf; + (void)BIO_set_close(s->s3->handshake_buffer, BIO_CLOSE); + return 1; +} + +/* + * Free digest list. Also frees handshake buffer since they are always freed + * together. + */ + +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; +} + +int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t 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) +{ + const EVP_MD *md; + long hdatalen; + void *hdata; + + if (s->s3->handshake_dgst == NULL) { + hdatalen = BIO_get_mem_data(s->s3->handshake_buffer, &hdata); + if (hdatalen <= 0) { + 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) { + 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 || !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; + } + } + if (keep == 0) { + BIO_free(s->s3->handshake_buffer); + s->s3->handshake_buffer = NULL; + } + + return 1; +} + +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)) { + /* SSLfatal() already called */ + return 0; + } + + 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) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, + ERR_R_MALLOC_FAILURE); + return 0; + } + 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); + return 0; + } + + ret = EVP_MD_CTX_size(ctx); + if (ret < 0) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, + ERR_R_INTERNAL_ERROR); + EVP_MD_CTX_reset(ctx); + return 0; + } + + if ((sender != NULL && EVP_DigestUpdate(ctx, sender, len) <= 0) + || EVP_MD_CTX_ctrl(ctx, EVP_CTRL_SSL3_MASTER_SECRET, + (int)s->session->master_key_length, + s->session->master_key) <= 0 + || EVP_DigestFinal_ex(ctx, p, NULL) <= 0) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, + ERR_R_INTERNAL_ERROR); + ret = 0; + } + + EVP_MD_CTX_free(ctx); + + return ret; +} int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, - int len) - { - static const unsigned char *salt[3]={ + size_t len, size_t *secret_size) +{ + static const unsigned char *salt[3] = { #ifndef CHARSET_EBCDIC - (const unsigned char *)"A", - (const unsigned char *)"BB", - (const unsigned char *)"CCC", + (const unsigned char *)"A", + (const unsigned char *)"BB", + (const unsigned char *)"CCC", #else - (const unsigned char *)"\x41", - (const unsigned char *)"\x42\x42", - (const unsigned char *)"\x43\x43\x43", -#endif - }; - unsigned char buf[EVP_MAX_MD_SIZE]; - EVP_MD_CTX ctx; - int i,ret=0; - unsigned int n; -#ifdef OPENSSL_SSL_TRACE_CRYPTO - unsigned char *tmpout = out; + (const unsigned char *)"\x41", + (const unsigned char *)"\x42\x42", + (const unsigned char *)"\x43\x43\x43", #endif - - EVP_MD_CTX_init(&ctx); - for (i=0; i<3; i++) - { - EVP_DigestInit_ex(&ctx,s->ctx->sha1, NULL); - EVP_DigestUpdate(&ctx,salt[i],strlen((const char *)salt[i])); - EVP_DigestUpdate(&ctx,p,len); - EVP_DigestUpdate(&ctx,&(s->s3->client_random[0]), - SSL3_RANDOM_SIZE); - EVP_DigestUpdate(&ctx,&(s->s3->server_random[0]), - SSL3_RANDOM_SIZE); - EVP_DigestFinal_ex(&ctx,buf,&n); - - EVP_DigestInit_ex(&ctx,s->ctx->md5, NULL); - EVP_DigestUpdate(&ctx,p,len); - EVP_DigestUpdate(&ctx,buf,n); - EVP_DigestFinal_ex(&ctx,out,&n); - out+=n; - ret+=n; - } - EVP_MD_CTX_cleanup(&ctx); - -#ifdef OPENSSL_SSL_TRACE_CRYPTO - if (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 - return(ret); - } + }; + unsigned char buf[EVP_MAX_MD_SIZE]; + EVP_MD_CTX *ctx = EVP_MD_CTX_new(); + int i, ret = 1; + unsigned int n; + size_t ret_secret_size = 0; + + if (ctx == NULL) { + 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 + /* 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_secret_size += n; + } + EVP_MD_CTX_free(ctx); + + OPENSSL_cleanse(buf, sizeof(buf)); + 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); - case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE); - case SSL_AD_BAD_RECORD_MAC: return(SSL3_AD_BAD_RECORD_MAC); - case SSL_AD_DECRYPTION_FAILED: return(SSL3_AD_BAD_RECORD_MAC); - case SSL_AD_RECORD_OVERFLOW: return(SSL3_AD_BAD_RECORD_MAC); - case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE); - case SSL_AD_HANDSHAKE_FAILURE: return(SSL3_AD_HANDSHAKE_FAILURE); - case SSL_AD_NO_CERTIFICATE: return(SSL3_AD_NO_CERTIFICATE); - case SSL_AD_BAD_CERTIFICATE: return(SSL3_AD_BAD_CERTIFICATE); - case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE); - case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED); - case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED); - case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN); - case SSL_AD_ILLEGAL_PARAMETER: return(SSL3_AD_ILLEGAL_PARAMETER); - case SSL_AD_UNKNOWN_CA: return(SSL3_AD_BAD_CERTIFICATE); - case SSL_AD_ACCESS_DENIED: return(SSL3_AD_HANDSHAKE_FAILURE); - case SSL_AD_DECODE_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE); - case SSL_AD_DECRYPT_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE); - case SSL_AD_EXPORT_RESTRICTION: return(SSL3_AD_HANDSHAKE_FAILURE); - case SSL_AD_PROTOCOL_VERSION: return(SSL3_AD_HANDSHAKE_FAILURE); - case SSL_AD_INSUFFICIENT_SECURITY:return(SSL3_AD_HANDSHAKE_FAILURE); - case SSL_AD_INTERNAL_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE); - case SSL_AD_USER_CANCELLED: return(SSL3_AD_HANDSHAKE_FAILURE); - case SSL_AD_NO_RENEGOTIATION: return(-1); /* Don't send it :-) */ - case SSL_AD_UNSUPPORTED_EXTENSION: return(SSL3_AD_HANDSHAKE_FAILURE); - case SSL_AD_CERTIFICATE_UNOBTAINABLE: return(SSL3_AD_HANDSHAKE_FAILURE); - case SSL_AD_UNRECOGNIZED_NAME: return(SSL3_AD_HANDSHAKE_FAILURE); - case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: return(SSL3_AD_HANDSHAKE_FAILURE); - case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: return(SSL3_AD_HANDSHAKE_FAILURE); - case SSL_AD_UNKNOWN_PSK_IDENTITY:return(TLS1_AD_UNKNOWN_PSK_IDENTITY); - default: return(-1); - } - } - +{ + switch (code) { + case SSL_AD_CLOSE_NOTIFY: + return SSL3_AD_CLOSE_NOTIFY; + case SSL_AD_UNEXPECTED_MESSAGE: + return SSL3_AD_UNEXPECTED_MESSAGE; + case SSL_AD_BAD_RECORD_MAC: + return SSL3_AD_BAD_RECORD_MAC; + case SSL_AD_DECRYPTION_FAILED: + return SSL3_AD_BAD_RECORD_MAC; + case SSL_AD_RECORD_OVERFLOW: + return SSL3_AD_BAD_RECORD_MAC; + case SSL_AD_DECOMPRESSION_FAILURE: + return SSL3_AD_DECOMPRESSION_FAILURE; + case SSL_AD_HANDSHAKE_FAILURE: + return SSL3_AD_HANDSHAKE_FAILURE; + case SSL_AD_NO_CERTIFICATE: + return SSL3_AD_NO_CERTIFICATE; + case SSL_AD_BAD_CERTIFICATE: + return SSL3_AD_BAD_CERTIFICATE; + case SSL_AD_UNSUPPORTED_CERTIFICATE: + return SSL3_AD_UNSUPPORTED_CERTIFICATE; + case SSL_AD_CERTIFICATE_REVOKED: + return SSL3_AD_CERTIFICATE_REVOKED; + case SSL_AD_CERTIFICATE_EXPIRED: + return SSL3_AD_CERTIFICATE_EXPIRED; + case SSL_AD_CERTIFICATE_UNKNOWN: + return SSL3_AD_CERTIFICATE_UNKNOWN; + case SSL_AD_ILLEGAL_PARAMETER: + return SSL3_AD_ILLEGAL_PARAMETER; + case SSL_AD_UNKNOWN_CA: + return SSL3_AD_BAD_CERTIFICATE; + case SSL_AD_ACCESS_DENIED: + return SSL3_AD_HANDSHAKE_FAILURE; + case SSL_AD_DECODE_ERROR: + return SSL3_AD_HANDSHAKE_FAILURE; + case SSL_AD_DECRYPT_ERROR: + return SSL3_AD_HANDSHAKE_FAILURE; + case SSL_AD_EXPORT_RESTRICTION: + return SSL3_AD_HANDSHAKE_FAILURE; + case SSL_AD_PROTOCOL_VERSION: + return SSL3_AD_HANDSHAKE_FAILURE; + case SSL_AD_INSUFFICIENT_SECURITY: + return SSL3_AD_HANDSHAKE_FAILURE; + case SSL_AD_INTERNAL_ERROR: + return SSL3_AD_HANDSHAKE_FAILURE; + case SSL_AD_USER_CANCELLED: + return SSL3_AD_HANDSHAKE_FAILURE; + case SSL_AD_NO_RENEGOTIATION: + return -1; /* Don't send it :-) */ + case SSL_AD_UNSUPPORTED_EXTENSION: + return SSL3_AD_HANDSHAKE_FAILURE; + case SSL_AD_CERTIFICATE_UNOBTAINABLE: + return SSL3_AD_HANDSHAKE_FAILURE; + case SSL_AD_UNRECOGNIZED_NAME: + return SSL3_AD_HANDSHAKE_FAILURE; + case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: + return SSL3_AD_HANDSHAKE_FAILURE; + case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: + return SSL3_AD_HANDSHAKE_FAILURE; + case SSL_AD_UNKNOWN_PSK_IDENTITY: + return TLS1_AD_UNKNOWN_PSK_IDENTITY; + case SSL_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; + } +}