2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
111 /* ====================================================================
112 * Copyright 2005 Nokia. All rights reserved.
114 * The portions of the attached software ("Contribution") is developed by
115 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
118 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
119 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
120 * support (see RFC 4279) to OpenSSL.
122 * No patent licenses or other rights except those expressly stated in
123 * the OpenSSL open source license shall be deemed granted or received
124 * expressly, by implication, estoppel, or otherwise.
126 * No assurances are provided by Nokia that the Contribution does not
127 * infringe the patent or other intellectual property rights of any third
128 * party or that the license provides you with all the necessary rights
129 * to make use of the Contribution.
131 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
132 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
133 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
134 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
139 #include "ssl_locl.h"
140 #include <openssl/evp.h>
141 #include <openssl/md5.h>
143 static const unsigned char ssl3_pad_1[48] = {
144 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
145 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
146 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
147 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
148 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
149 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36
152 static const unsigned char ssl3_pad_2[48] = {
153 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c,
154 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c,
155 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c,
156 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c,
157 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c,
158 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c, 0x5c
161 static int ssl3_handshake_mac(SSL *s, int md_nid,
162 const char *sender, int len, unsigned char *p);
163 static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num)
167 unsigned char buf[16], smd[SHA_DIGEST_LENGTH];
168 unsigned char c = 'A';
169 unsigned int i, j, k;
171 #ifdef CHARSET_EBCDIC
172 c = os_toascii[c]; /* 'A' in ASCII */
175 EVP_MD_CTX_init(&m5);
176 EVP_MD_CTX_set_flags(&m5, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
177 EVP_MD_CTX_init(&s1);
178 for (i = 0; (int)i < num; i += MD5_DIGEST_LENGTH) {
180 if (k > sizeof buf) {
181 /* bug: 'buf' is too small for this ciphersuite */
182 SSLerr(SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR);
186 for (j = 0; j < k; j++)
189 EVP_DigestInit_ex(&s1, EVP_sha1(), NULL);
190 EVP_DigestUpdate(&s1, buf, k);
191 EVP_DigestUpdate(&s1, s->session->master_key,
192 s->session->master_key_length);
193 EVP_DigestUpdate(&s1, s->s3->server_random, SSL3_RANDOM_SIZE);
194 EVP_DigestUpdate(&s1, s->s3->client_random, SSL3_RANDOM_SIZE);
195 EVP_DigestFinal_ex(&s1, smd, NULL);
197 EVP_DigestInit_ex(&m5, EVP_md5(), NULL);
198 EVP_DigestUpdate(&m5, s->session->master_key,
199 s->session->master_key_length);
200 EVP_DigestUpdate(&m5, smd, SHA_DIGEST_LENGTH);
201 if ((int)(i + MD5_DIGEST_LENGTH) > num) {
202 EVP_DigestFinal_ex(&m5, smd, NULL);
203 memcpy(km, smd, (num - i));
205 EVP_DigestFinal_ex(&m5, km, NULL);
207 km += MD5_DIGEST_LENGTH;
209 OPENSSL_cleanse(smd, SHA_DIGEST_LENGTH);
210 EVP_MD_CTX_cleanup(&m5);
211 EVP_MD_CTX_cleanup(&s1);
215 int ssl3_change_cipher_state(SSL *s, int which)
217 unsigned char *p, *mac_secret;
218 unsigned char exp_key[EVP_MAX_KEY_LENGTH];
219 unsigned char exp_iv[EVP_MAX_IV_LENGTH];
220 unsigned char *ms, *key, *iv, *er1, *er2;
223 #ifndef OPENSSL_NO_COMP
228 int is_exp, n, i, j, k, cl;
231 is_exp = SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
232 c = s->s3->tmp.new_sym_enc;
233 m = s->s3->tmp.new_hash;
234 /* m == NULL will lead to a crash later */
236 #ifndef OPENSSL_NO_COMP
237 if (s->s3->tmp.new_compression == NULL)
240 comp = s->s3->tmp.new_compression->method;
243 if (which & SSL3_CC_READ) {
244 if (s->enc_read_ctx != NULL)
246 else if ((s->enc_read_ctx =
247 OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
251 * make sure it's intialized in case we exit later with an error
253 EVP_CIPHER_CTX_init(s->enc_read_ctx);
254 dd = s->enc_read_ctx;
256 if (!ssl_replace_hash(&s->read_hash, m)) {
257 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
260 #ifndef OPENSSL_NO_COMP
262 if (s->expand != NULL) {
263 COMP_CTX_free(s->expand);
267 s->expand = COMP_CTX_new(comp);
268 if (s->expand == NULL) {
269 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,
270 SSL_R_COMPRESSION_LIBRARY_ERROR);
273 if (!RECORD_LAYER_setup_comp_buffer(&s->rlayer))
277 RECORD_LAYER_reset_read_sequence(&s->rlayer);
278 mac_secret = &(s->s3->read_mac_secret[0]);
280 if (s->enc_write_ctx != NULL)
282 else if ((s->enc_write_ctx =
283 OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
287 * make sure it's intialized in case we exit later with an error
289 EVP_CIPHER_CTX_init(s->enc_write_ctx);
290 dd = s->enc_write_ctx;
291 if (!ssl_replace_hash(&s->write_hash, m)) {
292 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
295 #ifndef OPENSSL_NO_COMP
297 if (s->compress != NULL) {
298 COMP_CTX_free(s->compress);
302 s->compress = COMP_CTX_new(comp);
303 if (s->compress == NULL) {
304 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,
305 SSL_R_COMPRESSION_LIBRARY_ERROR);
310 RECORD_LAYER_reset_write_sequence(&s->rlayer);
311 mac_secret = &(s->s3->write_mac_secret[0]);
315 EVP_CIPHER_CTX_cleanup(dd);
317 p = s->s3->tmp.key_block;
321 cl = EVP_CIPHER_key_length(c);
322 j = is_exp ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
323 cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
324 /* Was j=(is_exp)?5:EVP_CIPHER_key_length(c); */
325 k = EVP_CIPHER_iv_length(c);
326 if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
327 (which == SSL3_CHANGE_CIPHER_SERVER_READ)) {
334 er1 = &(s->s3->client_random[0]);
335 er2 = &(s->s3->server_random[0]);
344 er1 = &(s->s3->server_random[0]);
345 er2 = &(s->s3->client_random[0]);
348 if (n > s->s3->tmp.key_block_length) {
349 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
353 EVP_MD_CTX_init(&md);
354 memcpy(mac_secret, ms, i);
357 * In here I set both the read and write key/iv to the same value
358 * since only the correct one will be used :-).
360 EVP_DigestInit_ex(&md, EVP_md5(), NULL);
361 EVP_DigestUpdate(&md, key, j);
362 EVP_DigestUpdate(&md, er1, SSL3_RANDOM_SIZE);
363 EVP_DigestUpdate(&md, er2, SSL3_RANDOM_SIZE);
364 EVP_DigestFinal_ex(&md, &(exp_key[0]), NULL);
368 EVP_DigestInit_ex(&md, EVP_md5(), NULL);
369 EVP_DigestUpdate(&md, er1, SSL3_RANDOM_SIZE);
370 EVP_DigestUpdate(&md, er2, SSL3_RANDOM_SIZE);
371 EVP_DigestFinal_ex(&md, &(exp_iv[0]), NULL);
376 EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE));
378 #ifdef OPENSSL_SSL_TRACE_CRYPTO
379 if (s->msg_callback) {
381 int wh = which & SSL3_CC_WRITE ?
382 TLS1_RT_CRYPTO_WRITE : TLS1_RT_CRYPTO_READ;
383 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_MAC,
384 mac_secret, EVP_MD_size(m), s, s->msg_callback_arg);
386 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_KEY,
387 key, c->key_len, s, s->msg_callback_arg);
389 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_IV,
390 iv, k, s, s->msg_callback_arg);
395 OPENSSL_cleanse(&(exp_key[0]), sizeof(exp_key));
396 OPENSSL_cleanse(&(exp_iv[0]), sizeof(exp_iv));
397 EVP_MD_CTX_cleanup(&md);
400 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_MALLOC_FAILURE);
405 int ssl3_setup_key_block(SSL *s)
414 if (s->s3->tmp.key_block_length != 0)
417 if (!ssl_cipher_get_evp(s->session, &c, &hash, NULL, NULL, &comp, 0)) {
418 SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK, SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
422 s->s3->tmp.new_sym_enc = c;
423 s->s3->tmp.new_hash = hash;
424 #ifdef OPENSSL_NO_COMP
425 s->s3->tmp.new_compression = NULL;
427 s->s3->tmp.new_compression = comp;
430 num = EVP_MD_size(hash);
434 num = EVP_CIPHER_key_length(c) + num + EVP_CIPHER_iv_length(c);
437 ssl3_cleanup_key_block(s);
439 if ((p = OPENSSL_malloc(num)) == NULL)
442 s->s3->tmp.key_block_length = num;
443 s->s3->tmp.key_block = p;
445 ret = ssl3_generate_key_block(s, p, num);
447 if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) {
449 * enable vulnerability countermeasure for CBC ciphers with known-IV
450 * problem (http://www.openssl.org/~bodo/tls-cbc.txt)
452 s->s3->need_empty_fragments = 1;
454 if (s->session->cipher != NULL) {
455 if (s->session->cipher->algorithm_enc == SSL_eNULL)
456 s->s3->need_empty_fragments = 0;
458 #ifndef OPENSSL_NO_RC4
459 if (s->session->cipher->algorithm_enc == SSL_RC4)
460 s->s3->need_empty_fragments = 0;
468 SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE);
472 void ssl3_cleanup_key_block(SSL *s)
474 if (s->s3->tmp.key_block != NULL) {
475 OPENSSL_cleanse(s->s3->tmp.key_block, s->s3->tmp.key_block_length);
476 OPENSSL_free(s->s3->tmp.key_block);
477 s->s3->tmp.key_block = NULL;
479 s->s3->tmp.key_block_length = 0;
482 void ssl3_init_finished_mac(SSL *s)
484 BIO_free(s->s3->handshake_buffer);
485 if (s->s3->handshake_dgst)
486 ssl3_free_digest_list(s);
487 s->s3->handshake_buffer = BIO_new(BIO_s_mem());
488 (void)BIO_set_close(s->s3->handshake_buffer, BIO_CLOSE);
491 void ssl3_free_digest_list(SSL *s)
494 if (!s->s3->handshake_dgst)
496 for (i = 0; i < SSL_MAX_DIGEST; i++) {
497 if (s->s3->handshake_dgst[i])
498 EVP_MD_CTX_destroy(s->s3->handshake_dgst[i]);
500 OPENSSL_free(s->s3->handshake_dgst);
501 s->s3->handshake_dgst = NULL;
504 void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len)
506 if (s->s3->handshake_buffer
507 && !(s->s3->flags & TLS1_FLAGS_KEEP_HANDSHAKE)) {
508 BIO_write(s->s3->handshake_buffer, (void *)buf, len);
511 for (i = 0; i < SSL_MAX_DIGEST; i++) {
512 if (s->s3->handshake_dgst[i] != NULL)
513 EVP_DigestUpdate(s->s3->handshake_dgst[i], buf, len);
518 int ssl3_digest_cached_records(SSL *s)
526 /* Allocate handshake_dgst array */
527 ssl3_free_digest_list(s);
528 s->s3->handshake_dgst =
529 OPENSSL_malloc(SSL_MAX_DIGEST * sizeof(EVP_MD_CTX *));
530 if (s->s3->handshake_dgst == NULL) {
531 SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, ERR_R_MALLOC_FAILURE);
534 memset(s->s3->handshake_dgst, 0, SSL_MAX_DIGEST * sizeof(EVP_MD_CTX *));
535 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer, &hdata);
537 SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, SSL_R_BAD_HANDSHAKE_LENGTH);
541 /* Loop through bitso of algorithm2 field and create MD_CTX-es */
542 for (i = 0; ssl_get_handshake_digest(i, &mask, &md); i++) {
543 if ((mask & ssl_get_algorithm2(s)) && md) {
544 s->s3->handshake_dgst[i] = EVP_MD_CTX_create();
545 if (EVP_MD_nid(md) == NID_md5) {
546 EVP_MD_CTX_set_flags(s->s3->handshake_dgst[i],
547 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
549 EVP_DigestInit_ex(s->s3->handshake_dgst[i], md, NULL);
550 EVP_DigestUpdate(s->s3->handshake_dgst[i], hdata, hdatalen);
552 s->s3->handshake_dgst[i] = NULL;
555 if (!(s->s3->flags & TLS1_FLAGS_KEEP_HANDSHAKE)) {
556 /* Free handshake_buffer BIO */
557 BIO_free(s->s3->handshake_buffer);
558 s->s3->handshake_buffer = NULL;
564 int ssl3_cert_verify_mac(SSL *s, int md_nid, unsigned char *p)
566 return (ssl3_handshake_mac(s, md_nid, NULL, 0, p));
569 int ssl3_final_finish_mac(SSL *s,
570 const char *sender, int len, unsigned char *p)
573 ret = ssl3_handshake_mac(s, NID_md5, sender, len, p);
579 sha1len = ssl3_handshake_mac(s, NID_sha1, sender, len, p);
587 static int ssl3_handshake_mac(SSL *s, int md_nid,
588 const char *sender, int len, unsigned char *p)
593 unsigned char md_buf[EVP_MAX_MD_SIZE];
594 EVP_MD_CTX ctx, *d = NULL;
596 if (s->s3->handshake_buffer)
597 if (!ssl3_digest_cached_records(s))
601 * Search for digest of specified type in the handshake_dgst array
603 for (i = 0; i < SSL_MAX_DIGEST; i++) {
604 if (s->s3->handshake_dgst[i]
605 && EVP_MD_CTX_type(s->s3->handshake_dgst[i]) == md_nid) {
606 d = s->s3->handshake_dgst[i];
611 SSLerr(SSL_F_SSL3_HANDSHAKE_MAC, SSL_R_NO_REQUIRED_DIGEST);
614 EVP_MD_CTX_init(&ctx);
615 EVP_MD_CTX_set_flags(&ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
616 EVP_MD_CTX_copy_ex(&ctx, d);
617 n = EVP_MD_CTX_size(&ctx);
623 EVP_DigestUpdate(&ctx, sender, len);
624 EVP_DigestUpdate(&ctx, s->session->master_key,
625 s->session->master_key_length);
626 EVP_DigestUpdate(&ctx, ssl3_pad_1, npad);
627 EVP_DigestFinal_ex(&ctx, md_buf, &i);
629 EVP_DigestInit_ex(&ctx, EVP_MD_CTX_md(&ctx), NULL);
630 EVP_DigestUpdate(&ctx, s->session->master_key,
631 s->session->master_key_length);
632 EVP_DigestUpdate(&ctx, ssl3_pad_2, npad);
633 EVP_DigestUpdate(&ctx, md_buf, i);
634 EVP_DigestFinal_ex(&ctx, p, &ret);
636 EVP_MD_CTX_cleanup(&ctx);
641 int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
644 static const unsigned char *salt[3] = {
645 #ifndef CHARSET_EBCDIC
646 (const unsigned char *)"A",
647 (const unsigned char *)"BB",
648 (const unsigned char *)"CCC",
650 (const unsigned char *)"\x41",
651 (const unsigned char *)"\x42\x42",
652 (const unsigned char *)"\x43\x43\x43",
655 unsigned char buf[EVP_MAX_MD_SIZE];
659 #ifdef OPENSSL_SSL_TRACE_CRYPTO
660 unsigned char *tmpout = out;
663 EVP_MD_CTX_init(&ctx);
664 for (i = 0; i < 3; i++) {
665 EVP_DigestInit_ex(&ctx, s->ctx->sha1, NULL);
666 EVP_DigestUpdate(&ctx, salt[i], strlen((const char *)salt[i]));
667 EVP_DigestUpdate(&ctx, p, len);
668 EVP_DigestUpdate(&ctx, &(s->s3->client_random[0]), SSL3_RANDOM_SIZE);
669 EVP_DigestUpdate(&ctx, &(s->s3->server_random[0]), SSL3_RANDOM_SIZE);
670 EVP_DigestFinal_ex(&ctx, buf, &n);
672 EVP_DigestInit_ex(&ctx, s->ctx->md5, NULL);
673 EVP_DigestUpdate(&ctx, p, len);
674 EVP_DigestUpdate(&ctx, buf, n);
675 EVP_DigestFinal_ex(&ctx, out, &n);
679 EVP_MD_CTX_cleanup(&ctx);
681 #ifdef OPENSSL_SSL_TRACE_CRYPTO
682 if (s->msg_callback) {
683 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_PREMASTER,
684 p, len, s, s->msg_callback_arg);
685 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_CLIENT_RANDOM,
686 s->s3->client_random, SSL3_RANDOM_SIZE,
687 s, s->msg_callback_arg);
688 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_SERVER_RANDOM,
689 s->s3->server_random, SSL3_RANDOM_SIZE,
690 s, s->msg_callback_arg);
691 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_MASTER,
692 tmpout, SSL3_MASTER_SECRET_SIZE,
693 s, s->msg_callback_arg);
696 OPENSSL_cleanse(buf, sizeof buf);
700 int ssl3_alert_code(int code)
703 case SSL_AD_CLOSE_NOTIFY:
704 return (SSL3_AD_CLOSE_NOTIFY);
705 case SSL_AD_UNEXPECTED_MESSAGE:
706 return (SSL3_AD_UNEXPECTED_MESSAGE);
707 case SSL_AD_BAD_RECORD_MAC:
708 return (SSL3_AD_BAD_RECORD_MAC);
709 case SSL_AD_DECRYPTION_FAILED:
710 return (SSL3_AD_BAD_RECORD_MAC);
711 case SSL_AD_RECORD_OVERFLOW:
712 return (SSL3_AD_BAD_RECORD_MAC);
713 case SSL_AD_DECOMPRESSION_FAILURE:
714 return (SSL3_AD_DECOMPRESSION_FAILURE);
715 case SSL_AD_HANDSHAKE_FAILURE:
716 return (SSL3_AD_HANDSHAKE_FAILURE);
717 case SSL_AD_NO_CERTIFICATE:
718 return (SSL3_AD_NO_CERTIFICATE);
719 case SSL_AD_BAD_CERTIFICATE:
720 return (SSL3_AD_BAD_CERTIFICATE);
721 case SSL_AD_UNSUPPORTED_CERTIFICATE:
722 return (SSL3_AD_UNSUPPORTED_CERTIFICATE);
723 case SSL_AD_CERTIFICATE_REVOKED:
724 return (SSL3_AD_CERTIFICATE_REVOKED);
725 case SSL_AD_CERTIFICATE_EXPIRED:
726 return (SSL3_AD_CERTIFICATE_EXPIRED);
727 case SSL_AD_CERTIFICATE_UNKNOWN:
728 return (SSL3_AD_CERTIFICATE_UNKNOWN);
729 case SSL_AD_ILLEGAL_PARAMETER:
730 return (SSL3_AD_ILLEGAL_PARAMETER);
731 case SSL_AD_UNKNOWN_CA:
732 return (SSL3_AD_BAD_CERTIFICATE);
733 case SSL_AD_ACCESS_DENIED:
734 return (SSL3_AD_HANDSHAKE_FAILURE);
735 case SSL_AD_DECODE_ERROR:
736 return (SSL3_AD_HANDSHAKE_FAILURE);
737 case SSL_AD_DECRYPT_ERROR:
738 return (SSL3_AD_HANDSHAKE_FAILURE);
739 case SSL_AD_EXPORT_RESTRICTION:
740 return (SSL3_AD_HANDSHAKE_FAILURE);
741 case SSL_AD_PROTOCOL_VERSION:
742 return (SSL3_AD_HANDSHAKE_FAILURE);
743 case SSL_AD_INSUFFICIENT_SECURITY:
744 return (SSL3_AD_HANDSHAKE_FAILURE);
745 case SSL_AD_INTERNAL_ERROR:
746 return (SSL3_AD_HANDSHAKE_FAILURE);
747 case SSL_AD_USER_CANCELLED:
748 return (SSL3_AD_HANDSHAKE_FAILURE);
749 case SSL_AD_NO_RENEGOTIATION:
750 return (-1); /* Don't send it :-) */
751 case SSL_AD_UNSUPPORTED_EXTENSION:
752 return (SSL3_AD_HANDSHAKE_FAILURE);
753 case SSL_AD_CERTIFICATE_UNOBTAINABLE:
754 return (SSL3_AD_HANDSHAKE_FAILURE);
755 case SSL_AD_UNRECOGNIZED_NAME:
756 return (SSL3_AD_HANDSHAKE_FAILURE);
757 case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE:
758 return (SSL3_AD_HANDSHAKE_FAILURE);
759 case SSL_AD_BAD_CERTIFICATE_HASH_VALUE:
760 return (SSL3_AD_HANDSHAKE_FAILURE);
761 case SSL_AD_UNKNOWN_PSK_IDENTITY:
762 return (TLS1_AD_UNKNOWN_PSK_IDENTITY);
763 case SSL_AD_INAPPROPRIATE_FALLBACK:
764 return (TLS1_AD_INAPPROPRIATE_FALLBACK);