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 #include <openssl/des.h>
151 /* seed1 through seed5 are virtually concatenated */
152 static int tls1_P_hash(const EVP_MD *md, const unsigned char *sec,
154 const void *seed1, int seed1_len,
155 const void *seed2, int seed2_len,
156 const void *seed3, int seed3_len,
157 const void *seed4, int seed4_len,
158 const void *seed5, int seed5_len,
159 unsigned char *out, int olen)
163 EVP_MD_CTX ctx, ctx_tmp;
165 unsigned char A1[EVP_MAX_MD_SIZE];
169 chunk=EVP_MD_size(md);
170 OPENSSL_assert(chunk >= 0);
172 EVP_MD_CTX_init(&ctx);
173 EVP_MD_CTX_init(&ctx_tmp);
174 EVP_MD_CTX_set_flags(&ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
175 EVP_MD_CTX_set_flags(&ctx_tmp, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
176 mac_key = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL, sec, sec_len);
179 if (!EVP_DigestSignInit(&ctx,NULL,md, NULL, mac_key))
181 if (!EVP_DigestSignInit(&ctx_tmp,NULL,md, NULL, mac_key))
183 if (seed1 && !EVP_DigestSignUpdate(&ctx,seed1,seed1_len))
185 if (seed2 && !EVP_DigestSignUpdate(&ctx,seed2,seed2_len))
187 if (seed3 && !EVP_DigestSignUpdate(&ctx,seed3,seed3_len))
189 if (seed4 && !EVP_DigestSignUpdate(&ctx,seed4,seed4_len))
191 if (seed5 && !EVP_DigestSignUpdate(&ctx,seed5,seed5_len))
193 if (!EVP_DigestSignFinal(&ctx,A1,&A1_len))
198 /* Reinit mac contexts */
199 if (!EVP_DigestSignInit(&ctx,NULL,md, NULL, mac_key))
201 if (!EVP_DigestSignInit(&ctx_tmp,NULL,md, NULL, mac_key))
203 if (!EVP_DigestSignUpdate(&ctx,A1,A1_len))
205 if (!EVP_DigestSignUpdate(&ctx_tmp,A1,A1_len))
207 if (seed1 && !EVP_DigestSignUpdate(&ctx,seed1,seed1_len))
209 if (seed2 && !EVP_DigestSignUpdate(&ctx,seed2,seed2_len))
211 if (seed3 && !EVP_DigestSignUpdate(&ctx,seed3,seed3_len))
213 if (seed4 && !EVP_DigestSignUpdate(&ctx,seed4,seed4_len))
215 if (seed5 && !EVP_DigestSignUpdate(&ctx,seed5,seed5_len))
220 if (!EVP_DigestSignFinal(&ctx,out,&j))
224 /* calc the next A1 value */
225 if (!EVP_DigestSignFinal(&ctx_tmp,A1,&A1_len))
230 if (!EVP_DigestSignFinal(&ctx,A1,&A1_len))
238 EVP_PKEY_free(mac_key);
239 EVP_MD_CTX_cleanup(&ctx);
240 EVP_MD_CTX_cleanup(&ctx_tmp);
241 OPENSSL_cleanse(A1,sizeof(A1));
245 /* seed1 through seed5 are virtually concatenated */
246 static int tls1_PRF(long digest_mask,
247 const void *seed1, int seed1_len,
248 const void *seed2, int seed2_len,
249 const void *seed3, int seed3_len,
250 const void *seed4, int seed4_len,
251 const void *seed5, int seed5_len,
252 const unsigned char *sec, int slen,
254 unsigned char *out2, int olen)
257 const unsigned char *S1;
262 /* Count number of digests and partition sec evenly */
264 for (idx=0;ssl_get_handshake_digest(idx,&m,&md);idx++) {
265 if ((m<<TLS1_PRF_DGST_SHIFT) & digest_mask) count++;
272 for (idx=0;ssl_get_handshake_digest(idx,&m,&md);idx++) {
273 if ((m<<TLS1_PRF_DGST_SHIFT) & digest_mask) {
275 SSLerr(SSL_F_TLS1_PRF,
276 SSL_R_UNSUPPORTED_DIGEST_TYPE);
279 if (!tls1_P_hash(md ,S1,len+(slen&1),
280 seed1,seed1_len,seed2,seed2_len,seed3,seed3_len,seed4,seed4_len,seed5,seed5_len,
284 for (i=0; i<olen; i++)
294 static int tls1_generate_key_block(SSL *s, unsigned char *km,
295 unsigned char *tmp, int num)
298 ret = tls1_PRF(ssl_get_algorithm2(s),
299 TLS_MD_KEY_EXPANSION_CONST,TLS_MD_KEY_EXPANSION_CONST_SIZE,
300 s->s3->server_random,SSL3_RANDOM_SIZE,
301 s->s3->client_random,SSL3_RANDOM_SIZE,
303 s->session->master_key,s->session->master_key_length,
306 printf("tls1_generate_key_block() ==> %d byte master_key =\n\t",
307 s->session->master_key_length);
310 for (i=0; i < s->session->master_key_length; i++)
312 printf("%02X", s->session->master_key[i]);
315 #endif /* KSSL_DEBUG */
319 /* tls1_aead_ctx_init allocates |*aead_ctx|, if needed and returns 1. It
320 * returns 0 on malloc error. */
321 static int tls1_aead_ctx_init(SSL_AEAD_CTX **aead_ctx)
323 if (*aead_ctx != NULL)
324 EVP_AEAD_CTX_cleanup(&(*aead_ctx)->ctx);
327 *aead_ctx = (SSL_AEAD_CTX*) OPENSSL_malloc(sizeof(SSL_AEAD_CTX));
328 if (*aead_ctx == NULL)
330 SSLerr(SSL_F_TLS1_AEAD_CTX_INIT, ERR_R_MALLOC_FAILURE);
338 static int tls1_change_cipher_state_aead(SSL *s, char is_read,
339 const unsigned char *key, unsigned key_len,
340 const unsigned char *iv, unsigned iv_len)
342 const EVP_AEAD *aead = s->s3->tmp.new_aead;
343 SSL_AEAD_CTX *aead_ctx;
347 if (!tls1_aead_ctx_init(&s->aead_read_ctx))
349 aead_ctx = s->aead_read_ctx;
353 if (!tls1_aead_ctx_init(&s->aead_write_ctx))
355 aead_ctx = s->aead_write_ctx;
358 if (!EVP_AEAD_CTX_init(&aead_ctx->ctx, aead, key, key_len,
359 EVP_AEAD_DEFAULT_TAG_LENGTH, NULL /* engine */))
361 if (iv_len > sizeof(aead_ctx->fixed_nonce))
363 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE_AEAD, ERR_R_INTERNAL_ERROR);
366 memcpy(aead_ctx->fixed_nonce, iv, iv_len);
367 aead_ctx->fixed_nonce_len = iv_len;
368 aead_ctx->variable_nonce_len = 8; /* always the case, currently. */
369 if (aead_ctx->variable_nonce_len + aead_ctx->fixed_nonce_len != EVP_AEAD_nonce_length(aead))
371 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE_AEAD, ERR_R_INTERNAL_ERROR);
374 aead_ctx->tag_len = EVP_AEAD_max_overhead(aead);
379 /* tls1_change_cipher_state_cipher performs the work needed to switch cipher
380 * states when using EVP_CIPHER. The argument |is_read| is true iff this
381 * function is being called due to reading, as opposed to writing, a
382 * ChangeCipherSpec message. In order to support export ciphersuites,
383 * use_client_keys indicates whether the key material provided is in the
384 * "client write" direction. */
385 static int tls1_change_cipher_state_cipher(SSL *s,
386 char is_read, char use_client_keys,
387 const unsigned char *mac_secret, unsigned mac_secret_len,
388 const unsigned char *key, unsigned key_len,
389 const unsigned char *iv, unsigned iv_len)
391 const EVP_CIPHER *cipher = s->s3->tmp.new_sym_enc;
392 const char is_export = SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) != 0;
393 EVP_CIPHER_CTX *cipher_ctx;
397 unsigned char export_tmp1[EVP_MAX_KEY_LENGTH];
398 unsigned char export_tmp2[EVP_MAX_KEY_LENGTH];
399 unsigned char export_iv1[EVP_MAX_IV_LENGTH * 2];
400 unsigned char export_iv2[EVP_MAX_IV_LENGTH * 2];
404 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
405 s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM;
407 s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM;
409 if (s->enc_read_ctx != NULL)
410 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
411 else if ((s->enc_read_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
414 /* make sure it's intialized in case we exit later with an error */
415 EVP_CIPHER_CTX_init(s->enc_read_ctx);
417 cipher_ctx = s->enc_read_ctx;
418 mac_ctx = ssl_replace_hash(&s->read_hash, NULL);
420 memcpy(s->s3->read_mac_secret, mac_secret, mac_secret_len);
421 s->s3->read_mac_secret_size = mac_secret_len;
425 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
426 s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM;
428 s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM;
430 if (s->enc_write_ctx != NULL)
431 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
432 else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
435 /* make sure it's intialized in case we exit later with an error */
436 EVP_CIPHER_CTX_init(s->enc_write_ctx);
438 cipher_ctx = s->enc_write_ctx;
439 mac_ctx = ssl_replace_hash(&s->write_hash, NULL);
441 memcpy(s->s3->write_mac_secret, mac_secret, mac_secret_len);
442 s->s3->write_mac_secret_size = mac_secret_len;
447 /* In here I set both the read and write key/iv to the
448 * same value since only the correct one will be used :-).
450 const unsigned char *label;
455 label = (const unsigned char*) TLS_MD_CLIENT_WRITE_KEY_CONST;
456 label_len = TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE;
460 label = (const unsigned char*) TLS_MD_SERVER_WRITE_KEY_CONST;
461 label_len = TLS_MD_SERVER_WRITE_KEY_CONST_SIZE;
464 if (!tls1_PRF(ssl_get_algorithm2(s),
466 s->s3->client_random, SSL3_RANDOM_SIZE,
467 s->s3->server_random, SSL3_RANDOM_SIZE,
469 key /* secret */, key_len /* secret length */,
470 export_tmp1 /* output */,
471 export_tmp2 /* scratch space */,
472 EVP_CIPHER_key_length(s->s3->tmp.new_sym_enc) /* output length */))
478 static const unsigned char empty[] = "";
480 if (!tls1_PRF(ssl_get_algorithm2(s),
481 TLS_MD_IV_BLOCK_CONST, TLS_MD_IV_BLOCK_CONST_SIZE,
482 s->s3->client_random, SSL3_RANDOM_SIZE,
483 s->s3->server_random, SSL3_RANDOM_SIZE,
485 empty /* secret */ ,0 /* secret length */,
486 export_iv1 /* output */,
487 export_iv2 /* scratch space */,
488 iv_len * 2 /* output length */))
494 iv = &export_iv1[iv_len];
498 /* is_aead_cipher indicates whether the EVP_CIPHER implements an AEAD
499 * interface. This is different from the newer EVP_AEAD interface. */
500 is_aead_cipher = (EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_AEAD_CIPHER) != 0;
505 EVP_PKEY_new_mac_key(s->s3->tmp.new_mac_pkey_type,
506 NULL, mac_secret, mac_secret_len);
509 EVP_DigestSignInit(mac_ctx, NULL, s->s3->tmp.new_hash, NULL, mac_key);
510 EVP_PKEY_free(mac_key);
513 if (EVP_CIPHER_mode(cipher) == EVP_CIPH_GCM_MODE)
515 EVP_CipherInit_ex(cipher_ctx, cipher, NULL /* engine */, key,
516 NULL /* iv */, !is_read);
517 EVP_CIPHER_CTX_ctrl(cipher_ctx, EVP_CTRL_GCM_SET_IV_FIXED, iv_len, (void*) iv);
520 EVP_CipherInit_ex(cipher_ctx, cipher, NULL /* engine */, key, iv, !is_read);
522 /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */
523 if (is_aead_cipher && mac_secret_len > 0)
524 EVP_CIPHER_CTX_ctrl(cipher_ctx, EVP_CTRL_AEAD_SET_MAC_KEY,
525 mac_secret_len, (void*) mac_secret);
529 OPENSSL_cleanse(export_tmp1, sizeof(export_tmp1));
530 OPENSSL_cleanse(export_tmp2, sizeof(export_tmp1));
531 OPENSSL_cleanse(export_iv1, sizeof(export_iv1));
532 OPENSSL_cleanse(export_iv2, sizeof(export_iv2));
538 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE_CIPHER, ERR_R_MALLOC_FAILURE);
542 int tls1_change_cipher_state(SSL *s, int which)
544 /* is_read is true if we have just read a ChangeCipherSpec message -
545 * i.e. we need to update the read cipherspec. Otherwise we have just
547 const char is_read = (which & SSL3_CC_READ) != 0;
548 /* use_client_keys is true if we wish to use the keys for the "client
549 * write" direction. This is the case if we're a client sending a
550 * ChangeCipherSpec, or a server reading a client's ChangeCipherSpec. */
551 const char use_client_keys = which == SSL3_CHANGE_CIPHER_CLIENT_WRITE ||
552 which == SSL3_CHANGE_CIPHER_SERVER_READ;
553 const unsigned char *client_write_mac_secret, *server_write_mac_secret, *mac_secret;
554 const unsigned char *client_write_key, *server_write_key, *key;
555 const unsigned char *client_write_iv, *server_write_iv, *iv;
556 const EVP_CIPHER *cipher = s->s3->tmp.new_sym_enc;
557 const EVP_AEAD *aead = s->s3->tmp.new_aead;
558 unsigned key_len, iv_len, mac_secret_len;
559 const unsigned char *key_data;
560 const char is_export = SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) != 0;
562 /* Update compression contexts. */
563 #ifndef OPENSSL_NO_COMP
564 const SSL_COMP *comp = s->s3->tmp.new_compression;
568 if (s->expand != NULL)
570 COMP_CTX_free(s->expand);
575 s->expand=COMP_CTX_new(comp->method);
576 if (s->expand == NULL)
578 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
581 if (s->s3->rrec.comp == NULL)
583 (unsigned char *)OPENSSL_malloc(SSL3_RT_MAX_ENCRYPTED_LENGTH);
584 if (s->s3->rrec.comp == NULL)
590 if (s->compress != NULL)
592 COMP_CTX_free(s->compress);
597 s->compress = COMP_CTX_new(comp->method);
598 if (s->compress == NULL)
600 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
605 #endif /* OPENSSL_NO_COMP */
607 /* Reset sequence number to zero. */
608 memset(is_read ? s->s3->read_sequence : s->s3->write_sequence, 0, 8);
610 /* key_arg is used for SSLv2. We don't need it for TLS. */
611 s->session->key_arg_length = 0;
613 mac_secret_len = s->s3->tmp.new_mac_secret_size;
617 key_len = EVP_AEAD_key_length(aead);
618 iv_len = SSL_CIPHER_AEAD_FIXED_NONCE_LEN(s->s3->tmp.new_cipher);
622 key_len = EVP_CIPHER_key_length(cipher);
623 if (is_export && key_len > SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher))
624 key_len = SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher);
626 if (EVP_CIPHER_mode(cipher) == EVP_CIPH_GCM_MODE)
627 iv_len = EVP_GCM_TLS_FIXED_IV_LEN;
629 iv_len = EVP_CIPHER_iv_length(cipher);
632 key_data = s->s3->tmp.key_block;
633 client_write_mac_secret = key_data; key_data += mac_secret_len;
634 server_write_mac_secret = key_data; key_data += mac_secret_len;
635 client_write_key = key_data; key_data += key_len;
636 server_write_key = key_data; key_data += key_len;
637 client_write_iv = key_data; key_data += iv_len;
638 server_write_iv = key_data; key_data += iv_len;
642 mac_secret = client_write_mac_secret;
643 key = client_write_key;
644 iv = client_write_iv;
648 mac_secret = server_write_mac_secret;
649 key = server_write_key;
650 iv = server_write_iv;
653 if (key_data - s->s3->tmp.key_block != s->s3->tmp.key_block_length)
655 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_INTERNAL_ERROR);
661 if (!tls1_change_cipher_state_aead(s, is_read,
662 key, key_len, iv, iv_len))
667 if (!tls1_change_cipher_state_cipher(s, is_read, use_client_keys,
668 mac_secret, mac_secret_len,
674 #ifdef OPENSSL_SSL_TRACE_CRYPTO
677 int wh = which & SSL3_CC_WRITE ? TLS1_RT_CRYPTO_WRITE : 0;
679 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_MAC,
680 mac_secret, mac_secret_len,
681 s, s->msg_callback_arg);
683 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_KEY,
685 s, s->msg_callback_arg);
688 if (EVP_CIPHER_mode(cipher) == EVP_CIPH_GCM_MODE)
689 wh |= TLS1_RT_CRYPTO_FIXED_IV;
691 wh |= TLS1_RT_CRYPTO_IV;
692 s->msg_callback(2, s->version, wh, iv, iv_len,
693 s, s->msg_callback_arg);
700 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_MALLOC_FAILURE);
704 int tls1_setup_key_block(SSL *s)
706 unsigned char *p1,*p2=NULL;
707 const EVP_CIPHER *c = NULL;
708 const EVP_MD *hash = NULL;
709 const EVP_AEAD *aead = NULL;
712 int mac_type= NID_undef,mac_secret_size=0;
714 unsigned key_len, iv_len;
717 printf ("tls1_setup_key_block()\n");
718 #endif /* KSSL_DEBUG */
720 if (s->s3->tmp.key_block_length != 0)
723 if (!ssl_cipher_get_comp(s->session, &comp))
724 goto cipher_unavailable_err;
726 if (s->session->cipher &&
727 (s->session->cipher->algorithm2 & SSL_CIPHER_ALGORITHM2_AEAD))
729 if (!ssl_cipher_get_evp_aead(s->session, &aead))
730 goto cipher_unavailable_err;
731 key_len = EVP_AEAD_key_length(aead);
732 iv_len = SSL_CIPHER_AEAD_FIXED_NONCE_LEN(s->session->cipher);
736 if (!ssl_cipher_get_evp(s->session,&c,&hash,&mac_type,&mac_secret_size))
737 goto cipher_unavailable_err;
738 key_len = EVP_CIPHER_key_length(c);
740 if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE)
741 iv_len = EVP_GCM_TLS_FIXED_IV_LEN;
743 iv_len = EVP_CIPHER_iv_length(c);
746 s->s3->tmp.new_aead=aead;
747 s->s3->tmp.new_sym_enc=c;
748 s->s3->tmp.new_hash=hash;
749 s->s3->tmp.new_mac_pkey_type = mac_type;
750 s->s3->tmp.new_mac_secret_size = mac_secret_size;
752 num=key_len+mac_secret_size+iv_len;
755 ssl3_cleanup_key_block(s);
757 if ((p1=(unsigned char *)OPENSSL_malloc(num)) == NULL)
759 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
763 s->s3->tmp.key_block_length=num;
764 s->s3->tmp.key_block=p1;
766 if ((p2=(unsigned char *)OPENSSL_malloc(num)) == NULL)
768 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
773 printf("client random\n");
774 { int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->client_random[z],((z+1)%16)?' ':'\n'); }
775 printf("server random\n");
776 { int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->server_random[z],((z+1)%16)?' ':'\n'); }
777 printf("pre-master\n");
778 { int z; for (z=0; z<s->session->master_key_length; z++) printf("%02X%c",s->session->master_key[z],((z+1)%16)?' ':'\n'); }
780 if (!tls1_generate_key_block(s,p1,p2,num))
783 printf("\nkey block\n");
784 { int z; for (z=0; z<num; z++) printf("%02X%c",p1[z],((z+1)%16)?' ':'\n'); }
787 if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)
788 && s->method->version <= TLS1_VERSION)
790 /* enable vulnerability countermeasure for CBC ciphers with
791 * known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt)
793 s->s3->need_empty_fragments = 1;
795 if (s->session->cipher != NULL)
797 if (s->session->cipher->algorithm_enc == SSL_eNULL)
798 s->s3->need_empty_fragments = 0;
800 #ifndef OPENSSL_NO_RC4
801 if (s->session->cipher->algorithm_enc == SSL_RC4)
802 s->s3->need_empty_fragments = 0;
811 OPENSSL_cleanse(p2,num);
816 cipher_unavailable_err:
817 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
821 /* tls1_enc encrypts/decrypts the record in |s->wrec| / |s->rrec|, respectively.
824 * 0: (in non-constant time) if the record is publically invalid (i.e. too
826 * 1: if the record's padding is valid / the encryption was successful.
827 * -1: if the record's padding/AEAD-authenticator is invalid or, if sending,
828 * an internal error occured.
830 int tls1_enc(SSL *s, int send)
835 int bs,i,j,k,pad=0,ret,mac_size=0;
836 const EVP_CIPHER *enc;
837 const SSL_AEAD_CTX *aead;
845 aead = s->aead_write_ctx;
847 aead = s->aead_read_ctx;
851 unsigned char ad[13], *seq, *in, *out, nonce[16];
855 seq = send ? s->s3->write_sequence : s->s3->read_sequence;
857 if (s->version == DTLS1_VERSION || s->version == DTLS1_BAD_VER)
859 unsigned char dtlsseq[9], *p = dtlsseq;
861 s2n(send ? s->d1->w_epoch : s->d1->r_epoch, p);
862 memcpy(p, &seq[2], 6);
863 memcpy(ad, dtlsseq, 8);
868 for (i=7; i>=0; i--) /* increment */
877 ad[9] = (unsigned char)(s->version>>8);
878 ad[10] = (unsigned char)(s->version);
880 if (aead->fixed_nonce_len + aead->variable_nonce_len > sizeof(nonce) ||
881 aead->variable_nonce_len > 8)
882 return -1; /* internal error - should never happen. */
884 memcpy(nonce, aead->fixed_nonce, aead->fixed_nonce_len);
885 nonce_used = aead->fixed_nonce_len;
889 size_t len = rec->length;
893 /* When sending we use the sequence number as the
894 * variable part of the nonce. */
895 if (aead->variable_nonce_len > 8)
897 memcpy(nonce + nonce_used, ad, aead->variable_nonce_len);
898 nonce_used += aead->variable_nonce_len;
900 /* in do_ssl3_write, rec->input is moved forward by
901 * variable_nonce_len in order to leave space for the
902 * variable nonce. Thus we can copy the sequence number
903 * bytes into place without overwriting any of the
905 memcpy(out, ad, aead->variable_nonce_len);
906 len -= aead->variable_nonce_len;
911 n = EVP_AEAD_CTX_seal(&aead->ctx,
912 out + aead->variable_nonce_len, len + aead->tag_len,
914 in + aead->variable_nonce_len, len,
917 n += aead->variable_nonce_len;
922 size_t len = rec->length;
924 if (rec->data != rec->input)
925 return -1; /* internal error - should never happen. */
926 out = in = rec->input;
928 if (len < aead->variable_nonce_len)
930 memcpy(nonce + nonce_used, in, aead->variable_nonce_len);
931 nonce_used += aead->variable_nonce_len;
933 in += aead->variable_nonce_len;
934 len -= aead->variable_nonce_len;
935 out += aead->variable_nonce_len;
937 if (len < aead->tag_len)
939 len -= aead->tag_len;
944 n = EVP_AEAD_CTX_open(&aead->ctx, out, len, nonce, nonce_used,
945 in, len + aead->tag_len, ad, sizeof(ad));
947 rec->data = rec->input = out;
958 if (EVP_MD_CTX_md(s->write_hash))
960 int n=EVP_MD_CTX_size(s->write_hash);
961 OPENSSL_assert(n >= 0);
965 if (s->enc_write_ctx == NULL)
970 enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
971 /* For TLSv1.1 and later explicit IV */
972 if (SSL_USE_EXPLICIT_IV(s)
973 && EVP_CIPHER_mode(enc) == EVP_CIPH_CBC_MODE)
974 ivlen = EVP_CIPHER_iv_length(enc);
979 if ( rec->data != rec->input)
980 /* we can't write into the input stream:
981 * Can this ever happen?? (steve)
984 "%s:%d: rec->data != rec->input\n",
986 else if (RAND_bytes(rec->input, ivlen) <= 0)
993 if (EVP_MD_CTX_md(s->read_hash))
995 int n=EVP_MD_CTX_size(s->read_hash);
996 OPENSSL_assert(n >= 0);
1000 if (s->enc_read_ctx == NULL)
1003 enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
1007 printf("tls1_enc(%d)\n", send);
1008 #endif /* KSSL_DEBUG */
1010 if ((s->session == NULL) || (ds == NULL) || (enc == NULL))
1012 memmove(rec->data,rec->input,rec->length);
1013 rec->input=rec->data;
1019 bs=EVP_CIPHER_block_size(ds->cipher);
1021 if (EVP_CIPHER_flags(ds->cipher)&EVP_CIPH_FLAG_AEAD_CIPHER)
1023 unsigned char buf[13],*seq;
1025 seq = send?s->s3->write_sequence:s->s3->read_sequence;
1029 unsigned char dtlsseq[9],*p=dtlsseq;
1031 s2n(send?s->d1->w_epoch:s->d1->r_epoch,p);
1032 memcpy(p,&seq[2],6);
1033 memcpy(buf,dtlsseq,8);
1038 for (i=7; i>=0; i--) /* increment */
1041 if (seq[i] != 0) break;
1046 buf[9]=(unsigned char)(s->version>>8);
1047 buf[10]=(unsigned char)(s->version);
1048 buf[11]=rec->length>>8;
1049 buf[12]=rec->length&0xff;
1050 pad=EVP_CIPHER_CTX_ctrl(ds,EVP_CTRL_AEAD_TLS1_AAD,13,buf);
1057 else if ((bs != 1) && send)
1061 /* Add weird padding of upto 256 bytes */
1063 /* we need to add 'i' padding bytes of value j */
1065 if (s->options & SSL_OP_TLS_BLOCK_PADDING_BUG)
1067 if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
1070 for (k=(int)l; k<(int)(l+i); k++)
1079 printf("EVP_Cipher(ds=%p,rec->data=%p,rec->input=%p,l=%ld) ==>\n",
1080 ds,rec->data,rec->input,l);
1081 printf("\tEVP_CIPHER_CTX: %d buf_len, %d key_len [%d %d], %d iv_len\n",
1082 ds->buf_len, ds->cipher->key_len,
1083 DES_KEY_SZ, DES_SCHEDULE_SZ,
1084 ds->cipher->iv_len);
1086 for (i=0; i<ds->cipher->iv_len; i++) printf("%02X", ds->iv[i]);
1088 printf("\trec->input=");
1089 for (ui=0; ui<l; ui++) printf(" %02x", rec->input[ui]);
1092 #endif /* KSSL_DEBUG */
1096 if (l == 0 || l%bs != 0)
1100 i = EVP_Cipher(ds,rec->data,rec->input,l);
1101 if ((EVP_CIPHER_flags(ds->cipher)&EVP_CIPH_FLAG_CUSTOM_CIPHER)
1104 return -1; /* AEAD can fail to verify MAC */
1105 if (EVP_CIPHER_mode(enc) == EVP_CIPH_GCM_MODE && !send)
1107 rec->data += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1108 rec->input += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1109 rec->length -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
1115 printf("\trec->data=");
1117 printf(" %02x", rec->data[i]); printf("\n");
1119 #endif /* KSSL_DEBUG */
1122 if (EVP_MD_CTX_md(s->read_hash) != NULL)
1123 mac_size = EVP_MD_CTX_size(s->read_hash);
1124 if ((bs != 1) && !send)
1125 ret = tls1_cbc_remove_padding(s, rec, bs, mac_size);
1132 int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *out)
1135 EVP_MD_CTX ctx, *d=NULL;
1138 if (s->s3->handshake_buffer)
1139 if (!ssl3_digest_cached_records(s))
1142 for (i=0;i<SSL_MAX_DIGEST;i++)
1144 if (s->s3->handshake_dgst[i]&&EVP_MD_CTX_type(s->s3->handshake_dgst[i])==md_nid)
1146 d=s->s3->handshake_dgst[i];
1151 SSLerr(SSL_F_TLS1_CERT_VERIFY_MAC,SSL_R_NO_REQUIRED_DIGEST);
1155 EVP_MD_CTX_init(&ctx);
1156 EVP_MD_CTX_copy_ex(&ctx,d);
1157 EVP_DigestFinal_ex(&ctx,out,&ret);
1158 EVP_MD_CTX_cleanup(&ctx);
1162 int tls1_final_finish_mac(SSL *s,
1163 const char *str, int slen, unsigned char *out)
1167 unsigned char buf[2*EVP_MAX_MD_SIZE];
1168 unsigned char *q,buf2[12];
1176 if (s->s3->handshake_buffer)
1177 if (!ssl3_digest_cached_records(s))
1180 EVP_MD_CTX_init(&ctx);
1182 for (idx=0;ssl_get_handshake_digest(idx,&mask,&md);idx++)
1184 if (mask & ssl_get_algorithm2(s))
1186 int hashsize = EVP_MD_size(md);
1187 if (hashsize < 0 || hashsize > (int)(sizeof buf - (size_t)(q-buf)))
1189 /* internal error: 'buf' is too small for this cipersuite! */
1194 EVP_MD_CTX_copy_ex(&ctx,s->s3->handshake_dgst[idx]);
1195 EVP_DigestFinal_ex(&ctx,q,&i);
1196 if (i != (unsigned int)hashsize) /* can't really happen */
1203 if (!tls1_PRF(ssl_get_algorithm2(s),
1204 str,slen, buf,(int)(q-buf), NULL,0, NULL,0, NULL,0,
1205 s->session->master_key,s->session->master_key_length,
1206 out,buf2,sizeof buf2))
1208 EVP_MD_CTX_cleanup(&ctx);
1216 int tls1_mac(SSL *ssl, unsigned char *md, int send)
1221 size_t md_size, orig_len;
1223 EVP_MD_CTX hmac, *mac_ctx;
1224 unsigned char header[13];
1225 int stream_mac = (send?(ssl->mac_flags & SSL_MAC_FLAG_WRITE_MAC_STREAM):(ssl->mac_flags&SSL_MAC_FLAG_READ_MAC_STREAM));
1230 rec= &(ssl->s3->wrec);
1231 seq= &(ssl->s3->write_sequence[0]);
1232 hash=ssl->write_hash;
1236 rec= &(ssl->s3->rrec);
1237 seq= &(ssl->s3->read_sequence[0]);
1238 hash=ssl->read_hash;
1241 t=EVP_MD_CTX_size(hash);
1242 OPENSSL_assert(t >= 0);
1245 /* I should fix this up TLS TLS TLS TLS TLS XXXXXXXX */
1252 EVP_MD_CTX_copy(&hmac,hash);
1256 if (SSL_IS_DTLS(ssl))
1258 unsigned char dtlsseq[8],*p=dtlsseq;
1260 s2n(send?ssl->d1->w_epoch:ssl->d1->r_epoch, p);
1261 memcpy (p,&seq[2],6);
1263 memcpy(header, dtlsseq, 8);
1266 memcpy(header, seq, 8);
1268 /* kludge: tls1_cbc_remove_padding passes padding length in rec->type */
1269 orig_len = rec->length+md_size+((unsigned int)rec->type>>8);
1272 header[8]=rec->type;
1273 header[9]=(unsigned char)(ssl->version>>8);
1274 header[10]=(unsigned char)(ssl->version);
1275 header[11]=(rec->length)>>8;
1276 header[12]=(rec->length)&0xff;
1279 EVP_CIPHER_CTX_mode(ssl->enc_read_ctx) == EVP_CIPH_CBC_MODE &&
1280 ssl3_cbc_record_digest_supported(mac_ctx))
1282 /* This is a CBC-encrypted record. We must avoid leaking any
1283 * timing-side channel information about how many blocks of
1284 * data we are hashing because that gives an attacker a
1286 ssl3_cbc_digest_record(
1290 rec->length + md_size, orig_len,
1291 ssl->s3->read_mac_secret,
1292 ssl->s3->read_mac_secret_size,
1297 EVP_DigestSignUpdate(mac_ctx,header,sizeof(header));
1298 EVP_DigestSignUpdate(mac_ctx,rec->input,rec->length);
1299 t=EVP_DigestSignFinal(mac_ctx,md,&md_size);
1300 OPENSSL_assert(t > 0);
1302 if (!send && FIPS_mode())
1303 tls_fips_digest_extra(
1305 mac_ctx, rec->input,
1306 rec->length, orig_len);
1311 EVP_MD_CTX_cleanup(&hmac);
1314 {unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",mac_sec[z]); printf("\n"); }
1316 {int z; for (z=0; z<8; z++) printf("%02X ",seq[z]); printf("\n"); }
1318 {int z; for (z=0; z<5; z++) printf("%02X ",buf[z]); printf("\n"); }
1320 {unsigned int z; for (z=0; z<rec->length; z++) printf("%02X ",buf[z]); printf("\n"); }
1323 if (!SSL_IS_DTLS(ssl))
1325 for (i=7; i>=0; i--)
1328 if (seq[i] != 0) break;
1333 {unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",md[z]); printf("\n"); }
1338 int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
1341 unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH];
1342 const void *co = NULL, *so = NULL;
1343 int col = 0, sol = 0;
1347 printf ("tls1_generate_master_secret(%p,%p, %p, %d)\n", s,out, p,len);
1348 #endif /* KSSL_DEBUG */
1350 #ifdef TLSEXT_TYPE_opaque_prf_input
1351 if (s->s3->client_opaque_prf_input != NULL && s->s3->server_opaque_prf_input != NULL &&
1352 s->s3->client_opaque_prf_input_len > 0 &&
1353 s->s3->client_opaque_prf_input_len == s->s3->server_opaque_prf_input_len)
1355 co = s->s3->client_opaque_prf_input;
1356 col = s->s3->server_opaque_prf_input_len;
1357 so = s->s3->server_opaque_prf_input;
1358 sol = s->s3->client_opaque_prf_input_len; /* must be same as col (see draft-rescorla-tls-opaque-prf-input-00.txt, section 3.1) */
1362 tls1_PRF(ssl_get_algorithm2(s),
1363 TLS_MD_MASTER_SECRET_CONST,TLS_MD_MASTER_SECRET_CONST_SIZE,
1364 s->s3->client_random,SSL3_RANDOM_SIZE,
1366 s->s3->server_random,SSL3_RANDOM_SIZE,
1369 s->session->master_key,buff,sizeof buff);
1371 fprintf(stderr, "Premaster Secret:\n");
1372 BIO_dump_fp(stderr, (char *)p, len);
1373 fprintf(stderr, "Client Random:\n");
1374 BIO_dump_fp(stderr, (char *)s->s3->client_random, SSL3_RANDOM_SIZE);
1375 fprintf(stderr, "Server Random:\n");
1376 BIO_dump_fp(stderr, (char *)s->s3->server_random, SSL3_RANDOM_SIZE);
1377 fprintf(stderr, "Master Secret:\n");
1378 BIO_dump_fp(stderr, (char *)s->session->master_key, SSL3_MASTER_SECRET_SIZE);
1381 #ifdef OPENSSL_SSL_TRACE_CRYPTO
1382 if (s->msg_callback)
1384 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_PREMASTER,
1385 p, len, s, s->msg_callback_arg);
1386 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_CLIENT_RANDOM,
1387 s->s3->client_random, SSL3_RANDOM_SIZE,
1388 s, s->msg_callback_arg);
1389 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_SERVER_RANDOM,
1390 s->s3->server_random, SSL3_RANDOM_SIZE,
1391 s, s->msg_callback_arg);
1392 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_MASTER,
1393 s->session->master_key,
1394 SSL3_MASTER_SECRET_SIZE,
1395 s, s->msg_callback_arg);
1400 printf ("tls1_generate_master_secret() complete\n");
1401 #endif /* KSSL_DEBUG */
1402 return(SSL3_MASTER_SECRET_SIZE);
1405 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1406 const char *label, size_t llen, const unsigned char *context,
1407 size_t contextlen, int use_context)
1409 unsigned char *buff;
1410 unsigned char *val = NULL;
1411 size_t vallen, currentvalpos;
1415 printf ("tls1_export_keying_material(%p,%p,%d,%s,%d,%p,%d)\n", s, out, olen, label, llen, p, plen);
1416 #endif /* KSSL_DEBUG */
1418 buff = OPENSSL_malloc(olen);
1419 if (buff == NULL) goto err2;
1421 /* construct PRF arguments
1422 * we construct the PRF argument ourself rather than passing separate
1423 * values into the TLS PRF to ensure that the concatenation of values
1424 * does not create a prohibited label.
1426 vallen = llen + SSL3_RANDOM_SIZE * 2;
1429 vallen += 2 + contextlen;
1432 val = OPENSSL_malloc(vallen);
1433 if (val == NULL) goto err2;
1435 memcpy(val + currentvalpos, (unsigned char *) label, llen);
1436 currentvalpos += llen;
1437 memcpy(val + currentvalpos, s->s3->client_random, SSL3_RANDOM_SIZE);
1438 currentvalpos += SSL3_RANDOM_SIZE;
1439 memcpy(val + currentvalpos, s->s3->server_random, SSL3_RANDOM_SIZE);
1440 currentvalpos += SSL3_RANDOM_SIZE;
1444 val[currentvalpos] = (contextlen >> 8) & 0xff;
1446 val[currentvalpos] = contextlen & 0xff;
1448 if ((contextlen > 0) || (context != NULL))
1450 memcpy(val + currentvalpos, context, contextlen);
1454 /* disallow prohibited labels
1455 * note that SSL3_RANDOM_SIZE > max(prohibited label len) =
1456 * 15, so size of val > max(prohibited label len) = 15 and the
1457 * comparisons won't have buffer overflow
1459 if (memcmp(val, TLS_MD_CLIENT_FINISH_CONST,
1460 TLS_MD_CLIENT_FINISH_CONST_SIZE) == 0) goto err1;
1461 if (memcmp(val, TLS_MD_SERVER_FINISH_CONST,
1462 TLS_MD_SERVER_FINISH_CONST_SIZE) == 0) goto err1;
1463 if (memcmp(val, TLS_MD_MASTER_SECRET_CONST,
1464 TLS_MD_MASTER_SECRET_CONST_SIZE) == 0) goto err1;
1465 if (memcmp(val, TLS_MD_KEY_EXPANSION_CONST,
1466 TLS_MD_KEY_EXPANSION_CONST_SIZE) == 0) goto err1;
1468 rv = tls1_PRF(s->s3->tmp.new_cipher->algorithm2,
1474 s->session->master_key,s->session->master_key_length,
1478 printf ("tls1_export_keying_material() complete\n");
1479 #endif /* KSSL_DEBUG */
1482 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, SSL_R_TLS_ILLEGAL_EXPORTER_LABEL);
1486 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, ERR_R_MALLOC_FAILURE);
1489 if (buff != NULL) OPENSSL_free(buff);
1490 if (val != NULL) OPENSSL_free(val);
1494 int tls1_alert_code(int code)
1498 case SSL_AD_CLOSE_NOTIFY: return(SSL3_AD_CLOSE_NOTIFY);
1499 case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE);
1500 case SSL_AD_BAD_RECORD_MAC: return(SSL3_AD_BAD_RECORD_MAC);
1501 case SSL_AD_DECRYPTION_FAILED: return(TLS1_AD_DECRYPTION_FAILED);
1502 case SSL_AD_RECORD_OVERFLOW: return(TLS1_AD_RECORD_OVERFLOW);
1503 case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE);
1504 case SSL_AD_HANDSHAKE_FAILURE: return(SSL3_AD_HANDSHAKE_FAILURE);
1505 case SSL_AD_NO_CERTIFICATE: return(-1);
1506 case SSL_AD_BAD_CERTIFICATE: return(SSL3_AD_BAD_CERTIFICATE);
1507 case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE);
1508 case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED);
1509 case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED);
1510 case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN);
1511 case SSL_AD_ILLEGAL_PARAMETER: return(SSL3_AD_ILLEGAL_PARAMETER);
1512 case SSL_AD_UNKNOWN_CA: return(TLS1_AD_UNKNOWN_CA);
1513 case SSL_AD_ACCESS_DENIED: return(TLS1_AD_ACCESS_DENIED);
1514 case SSL_AD_DECODE_ERROR: return(TLS1_AD_DECODE_ERROR);
1515 case SSL_AD_DECRYPT_ERROR: return(TLS1_AD_DECRYPT_ERROR);
1516 case SSL_AD_EXPORT_RESTRICTION: return(TLS1_AD_EXPORT_RESTRICTION);
1517 case SSL_AD_PROTOCOL_VERSION: return(TLS1_AD_PROTOCOL_VERSION);
1518 case SSL_AD_INSUFFICIENT_SECURITY:return(TLS1_AD_INSUFFICIENT_SECURITY);
1519 case SSL_AD_INTERNAL_ERROR: return(TLS1_AD_INTERNAL_ERROR);
1520 case SSL_AD_USER_CANCELLED: return(TLS1_AD_USER_CANCELLED);
1521 case SSL_AD_NO_RENEGOTIATION: return(TLS1_AD_NO_RENEGOTIATION);
1522 case SSL_AD_UNSUPPORTED_EXTENSION: return(TLS1_AD_UNSUPPORTED_EXTENSION);
1523 case SSL_AD_CERTIFICATE_UNOBTAINABLE: return(TLS1_AD_CERTIFICATE_UNOBTAINABLE);
1524 case SSL_AD_UNRECOGNIZED_NAME: return(TLS1_AD_UNRECOGNIZED_NAME);
1525 case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: return(TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE);
1526 case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: return(TLS1_AD_BAD_CERTIFICATE_HASH_VALUE);
1527 case SSL_AD_UNKNOWN_PSK_IDENTITY:return(TLS1_AD_UNKNOWN_PSK_IDENTITY);
1528 #if 0 /* not appropriate for TLS, not used for DTLS */
1529 case DTLS1_AD_MISSING_HANDSHAKE_MESSAGE: return
1530 (DTLS1_AD_MISSING_HANDSHAKE_MESSAGE);
1532 default: return(-1);