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/kdf.h>
145 #include <openssl/rand.h>
147 /* seed1 through seed5 are concatenated */
148 static int tls1_PRF(SSL *s,
149 const void *seed1, int seed1_len,
150 const void *seed2, int seed2_len,
151 const void *seed3, int seed3_len,
152 const void *seed4, int seed4_len,
153 const void *seed5, int seed5_len,
154 const unsigned char *sec, int slen,
155 unsigned char *out, int olen)
157 const EVP_MD *md = ssl_prf_md(s);
158 EVP_PKEY_CTX *pctx = NULL;
161 size_t outlen = olen;
164 /* Should never happen */
165 SSLerr(SSL_F_TLS1_PRF, ERR_R_INTERNAL_ERROR);
168 pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_TLS1_PRF, NULL);
169 if (pctx == NULL || EVP_PKEY_derive_init(pctx) <= 0
170 || EVP_PKEY_CTX_set_tls1_prf_md(pctx, md) <= 0
171 || EVP_PKEY_CTX_set1_tls1_prf_secret(pctx, sec, slen) <= 0)
174 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed1, seed1_len) <= 0)
176 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed2, seed2_len) <= 0)
178 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed3, seed3_len) <= 0)
180 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed4, seed4_len) <= 0)
182 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed5, seed5_len) <= 0)
185 if (EVP_PKEY_derive(pctx, out, &outlen) <= 0)
190 EVP_PKEY_CTX_free(pctx);
194 static int tls1_generate_key_block(SSL *s, unsigned char *km, int num)
198 TLS_MD_KEY_EXPANSION_CONST,
199 TLS_MD_KEY_EXPANSION_CONST_SIZE, s->s3->server_random,
200 SSL3_RANDOM_SIZE, s->s3->client_random, SSL3_RANDOM_SIZE,
201 NULL, 0, NULL, 0, s->session->master_key,
202 s->session->master_key_length, km, num);
207 int tls1_change_cipher_state(SSL *s, int which)
209 unsigned char *p, *mac_secret;
210 unsigned char tmp1[EVP_MAX_KEY_LENGTH];
211 unsigned char tmp2[EVP_MAX_KEY_LENGTH];
212 unsigned char iv1[EVP_MAX_IV_LENGTH * 2];
213 unsigned char iv2[EVP_MAX_IV_LENGTH * 2];
214 unsigned char *ms, *key, *iv;
217 #ifndef OPENSSL_NO_COMP
218 const SSL_COMP *comp;
222 int *mac_secret_size;
228 c = s->s3->tmp.new_sym_enc;
229 m = s->s3->tmp.new_hash;
230 mac_type = s->s3->tmp.new_mac_pkey_type;
231 #ifndef OPENSSL_NO_COMP
232 comp = s->s3->tmp.new_compression;
235 if (which & SSL3_CC_READ) {
236 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
237 s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM;
239 s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM;
241 if (s->enc_read_ctx != NULL)
243 else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == NULL)
247 * make sure it's intialized in case we exit later with an error
249 EVP_CIPHER_CTX_reset(s->enc_read_ctx);
250 dd = s->enc_read_ctx;
251 mac_ctx = ssl_replace_hash(&s->read_hash, NULL);
254 #ifndef OPENSSL_NO_COMP
255 COMP_CTX_free(s->expand);
258 s->expand = COMP_CTX_new(comp->method);
259 if (s->expand == NULL) {
260 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,
261 SSL_R_COMPRESSION_LIBRARY_ERROR);
264 if (!RECORD_LAYER_setup_comp_buffer(&s->rlayer))
269 * this is done by dtls1_reset_seq_numbers for DTLS
272 RECORD_LAYER_reset_read_sequence(&s->rlayer);
273 mac_secret = &(s->s3->read_mac_secret[0]);
274 mac_secret_size = &(s->s3->read_mac_secret_size);
276 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
277 s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM;
279 s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM;
280 if (s->enc_write_ctx != NULL && !SSL_IS_DTLS(s))
282 else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL)
284 dd = s->enc_write_ctx;
285 if (SSL_IS_DTLS(s)) {
286 mac_ctx = EVP_MD_CTX_new();
289 s->write_hash = mac_ctx;
291 mac_ctx = ssl_replace_hash(&s->write_hash, NULL);
295 #ifndef OPENSSL_NO_COMP
296 COMP_CTX_free(s->compress);
299 s->compress = COMP_CTX_new(comp->method);
300 if (s->compress == NULL) {
301 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,
302 SSL_R_COMPRESSION_LIBRARY_ERROR);
308 * this is done by dtls1_reset_seq_numbers for DTLS
311 RECORD_LAYER_reset_write_sequence(&s->rlayer);
312 mac_secret = &(s->s3->write_mac_secret[0]);
313 mac_secret_size = &(s->s3->write_mac_secret_size);
317 EVP_CIPHER_CTX_reset(dd);
319 p = s->s3->tmp.key_block;
320 i = *mac_secret_size = s->s3->tmp.new_mac_secret_size;
322 cl = EVP_CIPHER_key_length(c);
324 /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
325 /* If GCM/CCM mode only part of IV comes from PRF */
326 if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE)
327 k = EVP_GCM_TLS_FIXED_IV_LEN;
328 else if (EVP_CIPHER_mode(c) == EVP_CIPH_CCM_MODE)
329 k = EVP_CCM_TLS_FIXED_IV_LEN;
331 k = EVP_CIPHER_iv_length(c);
332 if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
333 (which == SSL3_CHANGE_CIPHER_SERVER_READ)) {
350 if (n > s->s3->tmp.key_block_length) {
351 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
355 memcpy(mac_secret, ms, i);
357 if (!(EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER)) {
358 mac_key = EVP_PKEY_new_mac_key(mac_type, NULL,
359 mac_secret, *mac_secret_size);
361 || EVP_DigestSignInit(mac_ctx, NULL, m, NULL, mac_key) <= 0) {
362 EVP_PKEY_free(mac_key);
363 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
366 EVP_PKEY_free(mac_key);
369 printf("which = %04X\nmac key=", which);
372 for (z = 0; z < i; z++)
373 printf("%02X%c", ms[z], ((z + 1) % 16) ? ' ' : '\n');
377 if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) {
378 if (!EVP_CipherInit_ex(dd, c, NULL, key, NULL, (which & SSL3_CC_WRITE))
379 || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_GCM_SET_IV_FIXED, k, iv)) {
380 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
383 } else if (EVP_CIPHER_mode(c) == EVP_CIPH_CCM_MODE) {
385 if (s->s3->tmp.new_cipher->algorithm_enc & (SSL_AES128CCM8|SSL_AES256CCM8))
389 if (!EVP_CipherInit_ex(dd, c, NULL, NULL, NULL, (which & SSL3_CC_WRITE))
390 || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_IVLEN, 12, NULL)
391 || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_TAG, taglen, NULL)
392 || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_CCM_SET_IV_FIXED, k, iv)
393 || !EVP_CipherInit_ex(dd, NULL, NULL, key, NULL, -1)) {
394 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
398 if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) {
399 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
403 /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */
404 if ((EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER) && *mac_secret_size
405 && !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_MAC_KEY,
406 *mac_secret_size, mac_secret)) {
407 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
410 #ifdef OPENSSL_SSL_TRACE_CRYPTO
411 if (s->msg_callback) {
412 int wh = which & SSL3_CC_WRITE ? TLS1_RT_CRYPTO_WRITE : 0;
413 if (*mac_secret_size)
414 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_MAC,
415 mac_secret, *mac_secret_size,
416 s, s->msg_callback_arg);
418 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_KEY,
419 key, c->key_len, s, s->msg_callback_arg);
421 if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE)
422 wh |= TLS1_RT_CRYPTO_FIXED_IV;
424 wh |= TLS1_RT_CRYPTO_IV;
425 s->msg_callback(2, s->version, wh, iv, k, s, s->msg_callback_arg);
431 printf("which = %04X\nkey=", which);
434 for (z = 0; z < EVP_CIPHER_key_length(c); z++)
435 printf("%02X%c", key[z], ((z + 1) % 16) ? ' ' : '\n');
440 for (z = 0; z < k; z++)
441 printf("%02X%c", iv[z], ((z + 1) % 16) ? ' ' : '\n');
446 OPENSSL_cleanse(tmp1, sizeof(tmp1));
447 OPENSSL_cleanse(tmp2, sizeof(tmp1));
448 OPENSSL_cleanse(iv1, sizeof(iv1));
449 OPENSSL_cleanse(iv2, sizeof(iv2));
452 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_MALLOC_FAILURE);
454 OPENSSL_cleanse(tmp1, sizeof(tmp1));
455 OPENSSL_cleanse(tmp2, sizeof(tmp1));
456 OPENSSL_cleanse(iv1, sizeof(iv1));
457 OPENSSL_cleanse(iv2, sizeof(iv2));
461 int tls1_setup_key_block(SSL *s)
468 int mac_type = NID_undef, mac_secret_size = 0;
471 if (s->s3->tmp.key_block_length != 0)
474 if (!ssl_cipher_get_evp
475 (s->session, &c, &hash, &mac_type, &mac_secret_size, &comp,
477 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
481 s->s3->tmp.new_sym_enc = c;
482 s->s3->tmp.new_hash = hash;
483 s->s3->tmp.new_mac_pkey_type = mac_type;
484 s->s3->tmp.new_mac_secret_size = mac_secret_size;
486 EVP_CIPHER_key_length(c) + mac_secret_size + EVP_CIPHER_iv_length(c);
489 ssl3_cleanup_key_block(s);
491 if ((p = OPENSSL_malloc(num)) == NULL) {
492 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE);
496 s->s3->tmp.key_block_length = num;
497 s->s3->tmp.key_block = p;
500 printf("client random\n");
503 for (z = 0; z < SSL3_RANDOM_SIZE; z++)
504 printf("%02X%c", s->s3->client_random[z],
505 ((z + 1) % 16) ? ' ' : '\n');
507 printf("server random\n");
510 for (z = 0; z < SSL3_RANDOM_SIZE; z++)
511 printf("%02X%c", s->s3->server_random[z],
512 ((z + 1) % 16) ? ' ' : '\n');
514 printf("master key\n");
517 for (z = 0; z < s->session->master_key_length; z++)
518 printf("%02X%c", s->session->master_key[z],
519 ((z + 1) % 16) ? ' ' : '\n');
522 if (!tls1_generate_key_block(s, p, num))
525 printf("\nkey block\n");
528 for (z = 0; z < num; z++)
529 printf("%02X%c", p1[z], ((z + 1) % 16) ? ' ' : '\n');
533 if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)
534 && s->method->version <= TLS1_VERSION) {
536 * enable vulnerability countermeasure for CBC ciphers with known-IV
537 * problem (http://www.openssl.org/~bodo/tls-cbc.txt)
539 s->s3->need_empty_fragments = 1;
541 if (s->session->cipher != NULL) {
542 if (s->session->cipher->algorithm_enc == SSL_eNULL)
543 s->s3->need_empty_fragments = 0;
545 #ifndef OPENSSL_NO_RC4
546 if (s->session->cipher->algorithm_enc == SSL_RC4)
547 s->s3->need_empty_fragments = 0;
557 int tls1_final_finish_mac(SSL *s, const char *str, int slen,
561 unsigned char hash[EVP_MAX_MD_SIZE];
563 if (!ssl3_digest_cached_records(s, 0))
566 hashlen = ssl_handshake_hash(s, hash, sizeof(hash));
571 if (!tls1_PRF(s, str, slen, hash, hashlen, NULL, 0, NULL, 0, NULL, 0,
572 s->session->master_key, s->session->master_key_length,
573 out, TLS1_FINISH_MAC_LENGTH))
575 OPENSSL_cleanse(hash, hashlen);
576 return TLS1_FINISH_MAC_LENGTH;
579 int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
582 if (s->session->flags & SSL_SESS_FLAG_EXTMS) {
583 unsigned char hash[EVP_MAX_MD_SIZE * 2];
585 /* Digest cached records keeping record buffer (if present):
586 * this wont affect client auth because we're freezing the buffer
587 * at the same point (after client key exchange and before certificate
590 if (!ssl3_digest_cached_records(s, 1))
592 hashlen = ssl_handshake_hash(s, hash, sizeof(hash));
594 fprintf(stderr, "Handshake hashes:\n");
595 BIO_dump_fp(stderr, (char *)hash, hashlen);
598 TLS_MD_EXTENDED_MASTER_SECRET_CONST,
599 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE,
603 NULL, 0, p, len, s->session->master_key,
604 SSL3_MASTER_SECRET_SIZE);
605 OPENSSL_cleanse(hash, hashlen);
608 TLS_MD_MASTER_SECRET_CONST,
609 TLS_MD_MASTER_SECRET_CONST_SIZE,
610 s->s3->client_random, SSL3_RANDOM_SIZE,
612 s->s3->server_random, SSL3_RANDOM_SIZE,
613 NULL, 0, p, len, s->session->master_key,
614 SSL3_MASTER_SECRET_SIZE);
617 fprintf(stderr, "Premaster Secret:\n");
618 BIO_dump_fp(stderr, (char *)p, len);
619 fprintf(stderr, "Client Random:\n");
620 BIO_dump_fp(stderr, (char *)s->s3->client_random, SSL3_RANDOM_SIZE);
621 fprintf(stderr, "Server Random:\n");
622 BIO_dump_fp(stderr, (char *)s->s3->server_random, SSL3_RANDOM_SIZE);
623 fprintf(stderr, "Master Secret:\n");
624 BIO_dump_fp(stderr, (char *)s->session->master_key,
625 SSL3_MASTER_SECRET_SIZE);
628 #ifdef OPENSSL_SSL_TRACE_CRYPTO
629 if (s->msg_callback) {
630 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_PREMASTER,
631 p, len, s, s->msg_callback_arg);
632 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_CLIENT_RANDOM,
633 s->s3->client_random, SSL3_RANDOM_SIZE,
634 s, s->msg_callback_arg);
635 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_SERVER_RANDOM,
636 s->s3->server_random, SSL3_RANDOM_SIZE,
637 s, s->msg_callback_arg);
638 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_MASTER,
639 s->session->master_key,
640 SSL3_MASTER_SECRET_SIZE, s, s->msg_callback_arg);
644 return (SSL3_MASTER_SECRET_SIZE);
647 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
648 const char *label, size_t llen,
649 const unsigned char *context,
650 size_t contextlen, int use_context)
653 unsigned char *val = NULL;
654 size_t vallen = 0, currentvalpos;
657 buff = OPENSSL_malloc(olen);
662 * construct PRF arguments we construct the PRF argument ourself rather
663 * than passing separate values into the TLS PRF to ensure that the
664 * concatenation of values does not create a prohibited label.
666 vallen = llen + SSL3_RANDOM_SIZE * 2;
668 vallen += 2 + contextlen;
671 val = OPENSSL_malloc(vallen);
675 memcpy(val + currentvalpos, (unsigned char *)label, llen);
676 currentvalpos += llen;
677 memcpy(val + currentvalpos, s->s3->client_random, SSL3_RANDOM_SIZE);
678 currentvalpos += SSL3_RANDOM_SIZE;
679 memcpy(val + currentvalpos, s->s3->server_random, SSL3_RANDOM_SIZE);
680 currentvalpos += SSL3_RANDOM_SIZE;
683 val[currentvalpos] = (contextlen >> 8) & 0xff;
685 val[currentvalpos] = contextlen & 0xff;
687 if ((contextlen > 0) || (context != NULL)) {
688 memcpy(val + currentvalpos, context, contextlen);
693 * disallow prohibited labels note that SSL3_RANDOM_SIZE > max(prohibited
694 * label len) = 15, so size of val > max(prohibited label len) = 15 and
695 * the comparisons won't have buffer overflow
697 if (memcmp(val, TLS_MD_CLIENT_FINISH_CONST,
698 TLS_MD_CLIENT_FINISH_CONST_SIZE) == 0)
700 if (memcmp(val, TLS_MD_SERVER_FINISH_CONST,
701 TLS_MD_SERVER_FINISH_CONST_SIZE) == 0)
703 if (memcmp(val, TLS_MD_MASTER_SECRET_CONST,
704 TLS_MD_MASTER_SECRET_CONST_SIZE) == 0)
706 if (memcmp(val, TLS_MD_EXTENDED_MASTER_SECRET_CONST,
707 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE) == 0)
709 if (memcmp(val, TLS_MD_KEY_EXPANSION_CONST,
710 TLS_MD_KEY_EXPANSION_CONST_SIZE) == 0)
719 s->session->master_key, s->session->master_key_length,
724 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL,
725 SSL_R_TLS_ILLEGAL_EXPORTER_LABEL);
729 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, ERR_R_MALLOC_FAILURE);
732 CRYPTO_clear_free(val, vallen);
733 CRYPTO_clear_free(buff, olen);
737 int tls1_alert_code(int code)
740 case SSL_AD_CLOSE_NOTIFY:
741 return (SSL3_AD_CLOSE_NOTIFY);
742 case SSL_AD_UNEXPECTED_MESSAGE:
743 return (SSL3_AD_UNEXPECTED_MESSAGE);
744 case SSL_AD_BAD_RECORD_MAC:
745 return (SSL3_AD_BAD_RECORD_MAC);
746 case SSL_AD_DECRYPTION_FAILED:
747 return (TLS1_AD_DECRYPTION_FAILED);
748 case SSL_AD_RECORD_OVERFLOW:
749 return (TLS1_AD_RECORD_OVERFLOW);
750 case SSL_AD_DECOMPRESSION_FAILURE:
751 return (SSL3_AD_DECOMPRESSION_FAILURE);
752 case SSL_AD_HANDSHAKE_FAILURE:
753 return (SSL3_AD_HANDSHAKE_FAILURE);
754 case SSL_AD_NO_CERTIFICATE:
756 case SSL_AD_BAD_CERTIFICATE:
757 return (SSL3_AD_BAD_CERTIFICATE);
758 case SSL_AD_UNSUPPORTED_CERTIFICATE:
759 return (SSL3_AD_UNSUPPORTED_CERTIFICATE);
760 case SSL_AD_CERTIFICATE_REVOKED:
761 return (SSL3_AD_CERTIFICATE_REVOKED);
762 case SSL_AD_CERTIFICATE_EXPIRED:
763 return (SSL3_AD_CERTIFICATE_EXPIRED);
764 case SSL_AD_CERTIFICATE_UNKNOWN:
765 return (SSL3_AD_CERTIFICATE_UNKNOWN);
766 case SSL_AD_ILLEGAL_PARAMETER:
767 return (SSL3_AD_ILLEGAL_PARAMETER);
768 case SSL_AD_UNKNOWN_CA:
769 return (TLS1_AD_UNKNOWN_CA);
770 case SSL_AD_ACCESS_DENIED:
771 return (TLS1_AD_ACCESS_DENIED);
772 case SSL_AD_DECODE_ERROR:
773 return (TLS1_AD_DECODE_ERROR);
774 case SSL_AD_DECRYPT_ERROR:
775 return (TLS1_AD_DECRYPT_ERROR);
776 case SSL_AD_EXPORT_RESTRICTION:
777 return (TLS1_AD_EXPORT_RESTRICTION);
778 case SSL_AD_PROTOCOL_VERSION:
779 return (TLS1_AD_PROTOCOL_VERSION);
780 case SSL_AD_INSUFFICIENT_SECURITY:
781 return (TLS1_AD_INSUFFICIENT_SECURITY);
782 case SSL_AD_INTERNAL_ERROR:
783 return (TLS1_AD_INTERNAL_ERROR);
784 case SSL_AD_USER_CANCELLED:
785 return (TLS1_AD_USER_CANCELLED);
786 case SSL_AD_NO_RENEGOTIATION:
787 return (TLS1_AD_NO_RENEGOTIATION);
788 case SSL_AD_UNSUPPORTED_EXTENSION:
789 return (TLS1_AD_UNSUPPORTED_EXTENSION);
790 case SSL_AD_CERTIFICATE_UNOBTAINABLE:
791 return (TLS1_AD_CERTIFICATE_UNOBTAINABLE);
792 case SSL_AD_UNRECOGNIZED_NAME:
793 return (TLS1_AD_UNRECOGNIZED_NAME);
794 case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE:
795 return (TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE);
796 case SSL_AD_BAD_CERTIFICATE_HASH_VALUE:
797 return (TLS1_AD_BAD_CERTIFICATE_HASH_VALUE);
798 case SSL_AD_UNKNOWN_PSK_IDENTITY:
799 return (TLS1_AD_UNKNOWN_PSK_IDENTITY);
800 case SSL_AD_INAPPROPRIATE_FALLBACK:
801 return (TLS1_AD_INAPPROPRIATE_FALLBACK);