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 #ifndef OPENSSL_NO_COMP
141 # include <openssl/comp.h>
143 #include <openssl/evp.h>
144 #include <openssl/hmac.h>
145 #include <openssl/md5.h>
146 #include <openssl/rand.h>
148 /* seed1 through seed5 are virtually concatenated */
149 static int tls1_P_hash(const EVP_MD *md, const unsigned char *sec,
151 const void *seed1, int seed1_len,
152 const void *seed2, int seed2_len,
153 const void *seed3, int seed3_len,
154 const void *seed4, int seed4_len,
155 const void *seed5, int seed5_len,
156 unsigned char *out, int olen)
160 EVP_MD_CTX *ctx = NULL, *ctx_tmp = NULL, *ctx_init = NULL;
161 EVP_PKEY *mac_key = NULL;
162 unsigned char A1[EVP_MAX_MD_SIZE];
166 chunk = EVP_MD_size(md);
167 OPENSSL_assert(chunk >= 0);
169 ctx = EVP_MD_CTX_new();
170 ctx_tmp = EVP_MD_CTX_new();
171 ctx_init = EVP_MD_CTX_new();
172 if (ctx == NULL || ctx_tmp == NULL || ctx_init == NULL)
174 EVP_MD_CTX_set_flags(ctx_init, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
175 mac_key = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL, sec, sec_len);
178 if (!EVP_DigestSignInit(ctx_init, NULL, md, NULL, mac_key))
180 if (!EVP_MD_CTX_copy_ex(ctx, ctx_init))
182 if (seed1 && !EVP_DigestSignUpdate(ctx, seed1, seed1_len))
184 if (seed2 && !EVP_DigestSignUpdate(ctx, seed2, seed2_len))
186 if (seed3 && !EVP_DigestSignUpdate(ctx, seed3, seed3_len))
188 if (seed4 && !EVP_DigestSignUpdate(ctx, seed4, seed4_len))
190 if (seed5 && !EVP_DigestSignUpdate(ctx, seed5, seed5_len))
192 if (!EVP_DigestSignFinal(ctx, A1, &A1_len))
196 /* Reinit mac contexts */
197 if (!EVP_MD_CTX_copy_ex(ctx, ctx_init))
199 if (!EVP_DigestSignUpdate(ctx, A1, A1_len))
201 if (olen > chunk && !EVP_MD_CTX_copy_ex(ctx_tmp, ctx))
203 if (seed1 && !EVP_DigestSignUpdate(ctx, seed1, seed1_len))
205 if (seed2 && !EVP_DigestSignUpdate(ctx, seed2, seed2_len))
207 if (seed3 && !EVP_DigestSignUpdate(ctx, seed3, seed3_len))
209 if (seed4 && !EVP_DigestSignUpdate(ctx, seed4, seed4_len))
211 if (seed5 && !EVP_DigestSignUpdate(ctx, seed5, seed5_len))
215 if (!EVP_DigestSignFinal(ctx, out, &j))
219 /* calc the next A1 value */
220 if (!EVP_DigestSignFinal(ctx_tmp, A1, &A1_len))
222 } else { /* last one */
224 if (!EVP_DigestSignFinal(ctx, A1, &A1_len))
226 memcpy(out, A1, olen);
232 EVP_PKEY_free(mac_key);
233 EVP_MD_CTX_free(ctx);
234 EVP_MD_CTX_free(ctx_tmp);
235 EVP_MD_CTX_free(ctx_init);
236 OPENSSL_cleanse(A1, sizeof(A1));
240 /* seed1 through seed5 are virtually concatenated */
241 static int tls1_PRF(SSL *s,
242 const void *seed1, int seed1_len,
243 const void *seed2, int seed2_len,
244 const void *seed3, int seed3_len,
245 const void *seed4, int seed4_len,
246 const void *seed5, int seed5_len,
247 const unsigned char *sec, int slen,
248 unsigned char *out1, unsigned char *out2, int olen)
250 const EVP_MD *md = ssl_prf_md(s);
253 /* Should never happen */
254 SSLerr(SSL_F_TLS1_PRF, ERR_R_INTERNAL_ERROR);
257 if (EVP_MD_type(md) == NID_md5_sha1) {
259 if (!tls1_P_hash(EVP_md5(), sec, slen/2 + (slen & 1),
260 seed1, seed1_len, seed2, seed2_len, seed3,
261 seed3_len, seed4, seed4_len, seed5, seed5_len,
264 if (!tls1_P_hash(EVP_sha1(), sec + slen/2, slen/2 + (slen & 1),
265 seed1, seed1_len, seed2, seed2_len, seed3,
266 seed3_len, seed4, seed4_len, seed5, seed5_len,
269 for (i = 0; i < olen; i++)
273 memset(out2, 0, olen);
274 if (!tls1_P_hash(md, sec, slen,
275 seed1, seed1_len, seed2, seed2_len, seed3,
276 seed3_len, seed4, seed4_len, seed5, seed5_len,
283 static int tls1_generate_key_block(SSL *s, unsigned char *km,
284 unsigned char *tmp, int num)
288 TLS_MD_KEY_EXPANSION_CONST,
289 TLS_MD_KEY_EXPANSION_CONST_SIZE, s->s3->server_random,
290 SSL3_RANDOM_SIZE, s->s3->client_random, SSL3_RANDOM_SIZE,
291 NULL, 0, NULL, 0, s->session->master_key,
292 s->session->master_key_length, km, tmp, num);
297 int tls1_change_cipher_state(SSL *s, int which)
299 unsigned char *p, *mac_secret;
300 unsigned char tmp1[EVP_MAX_KEY_LENGTH];
301 unsigned char tmp2[EVP_MAX_KEY_LENGTH];
302 unsigned char iv1[EVP_MAX_IV_LENGTH * 2];
303 unsigned char iv2[EVP_MAX_IV_LENGTH * 2];
304 unsigned char *ms, *key, *iv;
307 #ifndef OPENSSL_NO_COMP
308 const SSL_COMP *comp;
312 int *mac_secret_size;
318 c = s->s3->tmp.new_sym_enc;
319 m = s->s3->tmp.new_hash;
320 mac_type = s->s3->tmp.new_mac_pkey_type;
321 #ifndef OPENSSL_NO_COMP
322 comp = s->s3->tmp.new_compression;
325 if (which & SSL3_CC_READ) {
326 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
327 s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM;
329 s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM;
331 if (s->enc_read_ctx != NULL)
333 else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == NULL)
337 * make sure it's intialized in case we exit later with an error
339 EVP_CIPHER_CTX_reset(s->enc_read_ctx);
340 dd = s->enc_read_ctx;
341 mac_ctx = ssl_replace_hash(&s->read_hash, NULL);
344 #ifndef OPENSSL_NO_COMP
345 COMP_CTX_free(s->expand);
348 s->expand = COMP_CTX_new(comp->method);
349 if (s->expand == NULL) {
350 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,
351 SSL_R_COMPRESSION_LIBRARY_ERROR);
354 if (!RECORD_LAYER_setup_comp_buffer(&s->rlayer))
359 * this is done by dtls1_reset_seq_numbers for DTLS
362 RECORD_LAYER_reset_read_sequence(&s->rlayer);
363 mac_secret = &(s->s3->read_mac_secret[0]);
364 mac_secret_size = &(s->s3->read_mac_secret_size);
366 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
367 s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM;
369 s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM;
370 if (s->enc_write_ctx != NULL && !SSL_IS_DTLS(s))
372 else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL)
374 dd = s->enc_write_ctx;
375 if (SSL_IS_DTLS(s)) {
376 mac_ctx = EVP_MD_CTX_new();
379 s->write_hash = mac_ctx;
381 mac_ctx = ssl_replace_hash(&s->write_hash, NULL);
385 #ifndef OPENSSL_NO_COMP
386 COMP_CTX_free(s->compress);
389 s->compress = COMP_CTX_new(comp->method);
390 if (s->compress == NULL) {
391 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,
392 SSL_R_COMPRESSION_LIBRARY_ERROR);
398 * this is done by dtls1_reset_seq_numbers for DTLS
401 RECORD_LAYER_reset_write_sequence(&s->rlayer);
402 mac_secret = &(s->s3->write_mac_secret[0]);
403 mac_secret_size = &(s->s3->write_mac_secret_size);
407 EVP_CIPHER_CTX_reset(dd);
409 p = s->s3->tmp.key_block;
410 i = *mac_secret_size = s->s3->tmp.new_mac_secret_size;
412 cl = EVP_CIPHER_key_length(c);
414 /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
415 /* If GCM/CCM mode only part of IV comes from PRF */
416 if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE)
417 k = EVP_GCM_TLS_FIXED_IV_LEN;
418 else if (EVP_CIPHER_mode(c) == EVP_CIPH_CCM_MODE)
419 k = EVP_CCM_TLS_FIXED_IV_LEN;
421 k = EVP_CIPHER_iv_length(c);
422 if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
423 (which == SSL3_CHANGE_CIPHER_SERVER_READ)) {
440 if (n > s->s3->tmp.key_block_length) {
441 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
445 memcpy(mac_secret, ms, i);
447 if (!(EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER)) {
448 mac_key = EVP_PKEY_new_mac_key(mac_type, NULL,
449 mac_secret, *mac_secret_size);
451 || EVP_DigestSignInit(mac_ctx, NULL, m, NULL, mac_key) <= 0) {
452 EVP_PKEY_free(mac_key);
453 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
456 EVP_PKEY_free(mac_key);
459 printf("which = %04X\nmac key=", which);
462 for (z = 0; z < i; z++)
463 printf("%02X%c", ms[z], ((z + 1) % 16) ? ' ' : '\n');
467 if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) {
468 if (!EVP_CipherInit_ex(dd, c, NULL, key, NULL, (which & SSL3_CC_WRITE))
469 || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_GCM_SET_IV_FIXED, k, iv)) {
470 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
473 } else if (EVP_CIPHER_mode(c) == EVP_CIPH_CCM_MODE) {
475 if (s->s3->tmp.new_cipher->algorithm_enc & (SSL_AES128CCM8|SSL_AES256CCM8))
479 if (!EVP_CipherInit_ex(dd, c, NULL, NULL, NULL, (which & SSL3_CC_WRITE))
480 || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_IVLEN, 12, NULL)
481 || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_TAG, taglen, NULL)
482 || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_CCM_SET_IV_FIXED, k, iv)
483 || !EVP_CipherInit_ex(dd, NULL, NULL, key, NULL, -1)) {
484 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
488 if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) {
489 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
493 /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */
494 if ((EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER) && *mac_secret_size
495 && !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_MAC_KEY,
496 *mac_secret_size, mac_secret)) {
497 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
500 #ifdef OPENSSL_SSL_TRACE_CRYPTO
501 if (s->msg_callback) {
502 int wh = which & SSL3_CC_WRITE ? TLS1_RT_CRYPTO_WRITE : 0;
503 if (*mac_secret_size)
504 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_MAC,
505 mac_secret, *mac_secret_size,
506 s, s->msg_callback_arg);
508 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_KEY,
509 key, c->key_len, s, s->msg_callback_arg);
511 if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE)
512 wh |= TLS1_RT_CRYPTO_FIXED_IV;
514 wh |= TLS1_RT_CRYPTO_IV;
515 s->msg_callback(2, s->version, wh, iv, k, s, s->msg_callback_arg);
521 printf("which = %04X\nkey=", which);
524 for (z = 0; z < EVP_CIPHER_key_length(c); z++)
525 printf("%02X%c", key[z], ((z + 1) % 16) ? ' ' : '\n');
530 for (z = 0; z < k; z++)
531 printf("%02X%c", iv[z], ((z + 1) % 16) ? ' ' : '\n');
536 OPENSSL_cleanse(tmp1, sizeof(tmp1));
537 OPENSSL_cleanse(tmp2, sizeof(tmp1));
538 OPENSSL_cleanse(iv1, sizeof(iv1));
539 OPENSSL_cleanse(iv2, sizeof(iv2));
542 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_MALLOC_FAILURE);
544 OPENSSL_cleanse(tmp1, sizeof(tmp1));
545 OPENSSL_cleanse(tmp2, sizeof(tmp1));
546 OPENSSL_cleanse(iv1, sizeof(iv1));
547 OPENSSL_cleanse(iv2, sizeof(iv2));
551 int tls1_setup_key_block(SSL *s)
553 unsigned char *p1, *p2 = NULL;
558 int mac_type = NID_undef, mac_secret_size = 0;
561 if (s->s3->tmp.key_block_length != 0)
564 if (!ssl_cipher_get_evp
565 (s->session, &c, &hash, &mac_type, &mac_secret_size, &comp,
567 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
571 s->s3->tmp.new_sym_enc = c;
572 s->s3->tmp.new_hash = hash;
573 s->s3->tmp.new_mac_pkey_type = mac_type;
574 s->s3->tmp.new_mac_secret_size = mac_secret_size;
576 EVP_CIPHER_key_length(c) + mac_secret_size + EVP_CIPHER_iv_length(c);
579 ssl3_cleanup_key_block(s);
581 if ((p1 = OPENSSL_malloc(num)) == NULL) {
582 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE);
586 s->s3->tmp.key_block_length = num;
587 s->s3->tmp.key_block = p1;
589 if ((p2 = OPENSSL_malloc(num)) == NULL) {
590 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE);
595 printf("client random\n");
598 for (z = 0; z < SSL3_RANDOM_SIZE; z++)
599 printf("%02X%c", s->s3->client_random[z],
600 ((z + 1) % 16) ? ' ' : '\n');
602 printf("server random\n");
605 for (z = 0; z < SSL3_RANDOM_SIZE; z++)
606 printf("%02X%c", s->s3->server_random[z],
607 ((z + 1) % 16) ? ' ' : '\n');
609 printf("master key\n");
612 for (z = 0; z < s->session->master_key_length; z++)
613 printf("%02X%c", s->session->master_key[z],
614 ((z + 1) % 16) ? ' ' : '\n');
617 if (!tls1_generate_key_block(s, p1, p2, num))
620 printf("\nkey block\n");
623 for (z = 0; z < num; z++)
624 printf("%02X%c", p1[z], ((z + 1) % 16) ? ' ' : '\n');
628 if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)
629 && s->method->version <= TLS1_VERSION) {
631 * enable vulnerability countermeasure for CBC ciphers with known-IV
632 * problem (http://www.openssl.org/~bodo/tls-cbc.txt)
634 s->s3->need_empty_fragments = 1;
636 if (s->session->cipher != NULL) {
637 if (s->session->cipher->algorithm_enc == SSL_eNULL)
638 s->s3->need_empty_fragments = 0;
640 #ifndef OPENSSL_NO_RC4
641 if (s->session->cipher->algorithm_enc == SSL_RC4)
642 s->s3->need_empty_fragments = 0;
649 OPENSSL_clear_free(p2, num);
653 int tls1_final_finish_mac(SSL *s, const char *str, int slen,
657 unsigned char hash[EVP_MAX_MD_SIZE];
658 unsigned char buf2[12];
660 if (!ssl3_digest_cached_records(s, 0))
663 hashlen = ssl_handshake_hash(s, hash, sizeof(hash));
669 str, slen, hash, hashlen, NULL, 0, NULL, 0, NULL, 0,
670 s->session->master_key, s->session->master_key_length,
671 out, buf2, sizeof buf2))
673 OPENSSL_cleanse(hash, hashlen);
674 OPENSSL_cleanse(buf2, sizeof(buf2));
678 int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
681 unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH];
683 if (s->session->flags & SSL_SESS_FLAG_EXTMS) {
684 unsigned char hash[EVP_MAX_MD_SIZE * 2];
686 /* Digest cached records keeping record buffer (if present):
687 * this wont affect client auth because we're freezing the buffer
688 * at the same point (after client key exchange and before certificate
691 if (!ssl3_digest_cached_records(s, 1))
693 hashlen = ssl_handshake_hash(s, hash, sizeof(hash));
695 fprintf(stderr, "Handshake hashes:\n");
696 BIO_dump_fp(stderr, (char *)hash, hashlen);
699 TLS_MD_EXTENDED_MASTER_SECRET_CONST,
700 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE,
704 NULL, 0, p, len, s->session->master_key, buff, sizeof buff);
705 OPENSSL_cleanse(hash, hashlen);
708 TLS_MD_MASTER_SECRET_CONST,
709 TLS_MD_MASTER_SECRET_CONST_SIZE,
710 s->s3->client_random, SSL3_RANDOM_SIZE,
712 s->s3->server_random, SSL3_RANDOM_SIZE,
713 NULL, 0, p, len, s->session->master_key, buff, sizeof buff);
715 OPENSSL_cleanse(buff, sizeof buff);
717 fprintf(stderr, "Premaster Secret:\n");
718 BIO_dump_fp(stderr, (char *)p, len);
719 fprintf(stderr, "Client Random:\n");
720 BIO_dump_fp(stderr, (char *)s->s3->client_random, SSL3_RANDOM_SIZE);
721 fprintf(stderr, "Server Random:\n");
722 BIO_dump_fp(stderr, (char *)s->s3->server_random, SSL3_RANDOM_SIZE);
723 fprintf(stderr, "Master Secret:\n");
724 BIO_dump_fp(stderr, (char *)s->session->master_key,
725 SSL3_MASTER_SECRET_SIZE);
728 #ifdef OPENSSL_SSL_TRACE_CRYPTO
729 if (s->msg_callback) {
730 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_PREMASTER,
731 p, len, s, s->msg_callback_arg);
732 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_CLIENT_RANDOM,
733 s->s3->client_random, SSL3_RANDOM_SIZE,
734 s, s->msg_callback_arg);
735 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_SERVER_RANDOM,
736 s->s3->server_random, SSL3_RANDOM_SIZE,
737 s, s->msg_callback_arg);
738 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_MASTER,
739 s->session->master_key,
740 SSL3_MASTER_SECRET_SIZE, s, s->msg_callback_arg);
744 return (SSL3_MASTER_SECRET_SIZE);
747 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
748 const char *label, size_t llen,
749 const unsigned char *context,
750 size_t contextlen, int use_context)
753 unsigned char *val = NULL;
754 size_t vallen = 0, currentvalpos;
757 buff = OPENSSL_malloc(olen);
762 * construct PRF arguments we construct the PRF argument ourself rather
763 * than passing separate values into the TLS PRF to ensure that the
764 * concatenation of values does not create a prohibited label.
766 vallen = llen + SSL3_RANDOM_SIZE * 2;
768 vallen += 2 + contextlen;
771 val = OPENSSL_malloc(vallen);
775 memcpy(val + currentvalpos, (unsigned char *)label, llen);
776 currentvalpos += llen;
777 memcpy(val + currentvalpos, s->s3->client_random, SSL3_RANDOM_SIZE);
778 currentvalpos += SSL3_RANDOM_SIZE;
779 memcpy(val + currentvalpos, s->s3->server_random, SSL3_RANDOM_SIZE);
780 currentvalpos += SSL3_RANDOM_SIZE;
783 val[currentvalpos] = (contextlen >> 8) & 0xff;
785 val[currentvalpos] = contextlen & 0xff;
787 if ((contextlen > 0) || (context != NULL)) {
788 memcpy(val + currentvalpos, context, contextlen);
793 * disallow prohibited labels note that SSL3_RANDOM_SIZE > max(prohibited
794 * label len) = 15, so size of val > max(prohibited label len) = 15 and
795 * the comparisons won't have buffer overflow
797 if (memcmp(val, TLS_MD_CLIENT_FINISH_CONST,
798 TLS_MD_CLIENT_FINISH_CONST_SIZE) == 0)
800 if (memcmp(val, TLS_MD_SERVER_FINISH_CONST,
801 TLS_MD_SERVER_FINISH_CONST_SIZE) == 0)
803 if (memcmp(val, TLS_MD_MASTER_SECRET_CONST,
804 TLS_MD_MASTER_SECRET_CONST_SIZE) == 0)
806 if (memcmp(val, TLS_MD_EXTENDED_MASTER_SECRET_CONST,
807 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE) == 0)
809 if (memcmp(val, TLS_MD_KEY_EXPANSION_CONST,
810 TLS_MD_KEY_EXPANSION_CONST_SIZE) == 0)
819 s->session->master_key, s->session->master_key_length,
824 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL,
825 SSL_R_TLS_ILLEGAL_EXPORTER_LABEL);
829 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, ERR_R_MALLOC_FAILURE);
832 CRYPTO_clear_free(val, vallen);
833 CRYPTO_clear_free(buff, olen);
837 int tls1_alert_code(int code)
840 case SSL_AD_CLOSE_NOTIFY:
841 return (SSL3_AD_CLOSE_NOTIFY);
842 case SSL_AD_UNEXPECTED_MESSAGE:
843 return (SSL3_AD_UNEXPECTED_MESSAGE);
844 case SSL_AD_BAD_RECORD_MAC:
845 return (SSL3_AD_BAD_RECORD_MAC);
846 case SSL_AD_DECRYPTION_FAILED:
847 return (TLS1_AD_DECRYPTION_FAILED);
848 case SSL_AD_RECORD_OVERFLOW:
849 return (TLS1_AD_RECORD_OVERFLOW);
850 case SSL_AD_DECOMPRESSION_FAILURE:
851 return (SSL3_AD_DECOMPRESSION_FAILURE);
852 case SSL_AD_HANDSHAKE_FAILURE:
853 return (SSL3_AD_HANDSHAKE_FAILURE);
854 case SSL_AD_NO_CERTIFICATE:
856 case SSL_AD_BAD_CERTIFICATE:
857 return (SSL3_AD_BAD_CERTIFICATE);
858 case SSL_AD_UNSUPPORTED_CERTIFICATE:
859 return (SSL3_AD_UNSUPPORTED_CERTIFICATE);
860 case SSL_AD_CERTIFICATE_REVOKED:
861 return (SSL3_AD_CERTIFICATE_REVOKED);
862 case SSL_AD_CERTIFICATE_EXPIRED:
863 return (SSL3_AD_CERTIFICATE_EXPIRED);
864 case SSL_AD_CERTIFICATE_UNKNOWN:
865 return (SSL3_AD_CERTIFICATE_UNKNOWN);
866 case SSL_AD_ILLEGAL_PARAMETER:
867 return (SSL3_AD_ILLEGAL_PARAMETER);
868 case SSL_AD_UNKNOWN_CA:
869 return (TLS1_AD_UNKNOWN_CA);
870 case SSL_AD_ACCESS_DENIED:
871 return (TLS1_AD_ACCESS_DENIED);
872 case SSL_AD_DECODE_ERROR:
873 return (TLS1_AD_DECODE_ERROR);
874 case SSL_AD_DECRYPT_ERROR:
875 return (TLS1_AD_DECRYPT_ERROR);
876 case SSL_AD_EXPORT_RESTRICTION:
877 return (TLS1_AD_EXPORT_RESTRICTION);
878 case SSL_AD_PROTOCOL_VERSION:
879 return (TLS1_AD_PROTOCOL_VERSION);
880 case SSL_AD_INSUFFICIENT_SECURITY:
881 return (TLS1_AD_INSUFFICIENT_SECURITY);
882 case SSL_AD_INTERNAL_ERROR:
883 return (TLS1_AD_INTERNAL_ERROR);
884 case SSL_AD_USER_CANCELLED:
885 return (TLS1_AD_USER_CANCELLED);
886 case SSL_AD_NO_RENEGOTIATION:
887 return (TLS1_AD_NO_RENEGOTIATION);
888 case SSL_AD_UNSUPPORTED_EXTENSION:
889 return (TLS1_AD_UNSUPPORTED_EXTENSION);
890 case SSL_AD_CERTIFICATE_UNOBTAINABLE:
891 return (TLS1_AD_CERTIFICATE_UNOBTAINABLE);
892 case SSL_AD_UNRECOGNIZED_NAME:
893 return (TLS1_AD_UNRECOGNIZED_NAME);
894 case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE:
895 return (TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE);
896 case SSL_AD_BAD_CERTIFICATE_HASH_VALUE:
897 return (TLS1_AD_BAD_CERTIFICATE_HASH_VALUE);
898 case SSL_AD_UNKNOWN_PSK_IDENTITY:
899 return (TLS1_AD_UNKNOWN_PSK_IDENTITY);
900 case SSL_AD_INAPPROPRIATE_FALLBACK:
901 return (TLS1_AD_INAPPROPRIATE_FALLBACK);