1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
57 /* ====================================================================
58 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
60 * Redistribution and use in source and binary forms, with or without
61 * modification, are permitted provided that the following conditions
64 * 1. Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.
67 * 2. Redistributions in binary form must reproduce the above copyright
68 * notice, this list of conditions and the following disclaimer in
69 * the documentation and/or other materials provided with the
72 * 3. All advertising materials mentioning features or use of this
73 * software must display the following acknowledgment:
74 * "This product includes software developed by the OpenSSL Project
75 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
78 * endorse or promote products derived from this software without
79 * prior written permission. For written permission, please contact
80 * openssl-core@openssl.org.
82 * 5. Products derived from this software may not be called "OpenSSL"
83 * nor may "OpenSSL" appear in their names without prior written
84 * permission of the OpenSSL Project.
86 * 6. Redistributions of any form whatsoever must retain the following
88 * "This product includes software developed by the OpenSSL Project
89 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
92 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
93 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
94 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
95 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
96 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
97 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
98 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
100 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
101 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
102 * OF THE POSSIBILITY OF SUCH DAMAGE.
103 * ====================================================================
105 * This product includes cryptographic software written by Eric Young
106 * (eay@cryptsoft.com). This product includes software written by Tim
107 * Hudson (tjh@cryptsoft.com).
110 /* ====================================================================
111 * Copyright 2005 Nokia. All rights reserved.
113 * The portions of the attached software ("Contribution") is developed by
114 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
117 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
118 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
119 * support (see RFC 4279) to OpenSSL.
121 * No patent licenses or other rights except those expressly stated in
122 * the OpenSSL open source license shall be deemed granted or received
123 * expressly, by implication, estoppel, or otherwise.
125 * No assurances are provided by Nokia that the Contribution does not
126 * infringe the patent or other intellectual property rights of any third
127 * party or that the license provides you with all the necessary rights
128 * to make use of the Contribution.
130 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
131 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
132 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
133 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
138 #include "ssl_locl.h"
139 #ifndef OPENSSL_NO_COMP
140 # include <openssl/comp.h>
142 #include <openssl/evp.h>
143 #include <openssl/kdf.h>
144 #include <openssl/rand.h>
146 /* seed1 through seed5 are concatenated */
147 static int tls1_PRF(SSL
*s
,
148 const void *seed1
, int seed1_len
,
149 const void *seed2
, int seed2_len
,
150 const void *seed3
, int seed3_len
,
151 const void *seed4
, int seed4_len
,
152 const void *seed5
, int seed5_len
,
153 const unsigned char *sec
, int slen
,
154 unsigned char *out
, int olen
)
156 const EVP_MD
*md
= ssl_prf_md(s
);
157 EVP_PKEY_CTX
*pctx
= NULL
;
160 size_t outlen
= olen
;
163 /* Should never happen */
164 SSLerr(SSL_F_TLS1_PRF
, ERR_R_INTERNAL_ERROR
);
167 pctx
= EVP_PKEY_CTX_new_id(EVP_PKEY_TLS1_PRF
, NULL
);
168 if (pctx
== NULL
|| EVP_PKEY_derive_init(pctx
) <= 0
169 || EVP_PKEY_CTX_set_tls1_prf_md(pctx
, md
) <= 0
170 || EVP_PKEY_CTX_set1_tls1_prf_secret(pctx
, sec
, slen
) <= 0)
173 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx
, seed1
, seed1_len
) <= 0)
175 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx
, seed2
, seed2_len
) <= 0)
177 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx
, seed3
, seed3_len
) <= 0)
179 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx
, seed4
, seed4_len
) <= 0)
181 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx
, seed5
, seed5_len
) <= 0)
184 if (EVP_PKEY_derive(pctx
, out
, &outlen
) <= 0)
189 EVP_PKEY_CTX_free(pctx
);
193 static int tls1_generate_key_block(SSL
*s
, unsigned char *km
, int num
)
197 TLS_MD_KEY_EXPANSION_CONST
,
198 TLS_MD_KEY_EXPANSION_CONST_SIZE
, s
->s3
->server_random
,
199 SSL3_RANDOM_SIZE
, s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
200 NULL
, 0, NULL
, 0, s
->session
->master_key
,
201 s
->session
->master_key_length
, km
, num
);
206 int tls1_change_cipher_state(SSL
*s
, int which
)
208 unsigned char *p
, *mac_secret
;
209 unsigned char tmp1
[EVP_MAX_KEY_LENGTH
];
210 unsigned char tmp2
[EVP_MAX_KEY_LENGTH
];
211 unsigned char iv1
[EVP_MAX_IV_LENGTH
* 2];
212 unsigned char iv2
[EVP_MAX_IV_LENGTH
* 2];
213 unsigned char *ms
, *key
, *iv
;
216 #ifndef OPENSSL_NO_COMP
217 const SSL_COMP
*comp
;
221 int *mac_secret_size
;
227 c
= s
->s3
->tmp
.new_sym_enc
;
228 m
= s
->s3
->tmp
.new_hash
;
229 mac_type
= s
->s3
->tmp
.new_mac_pkey_type
;
230 #ifndef OPENSSL_NO_COMP
231 comp
= s
->s3
->tmp
.new_compression
;
234 if (which
& SSL3_CC_READ
) {
235 if (s
->s3
->tmp
.new_cipher
->algorithm2
& TLS1_STREAM_MAC
)
236 s
->mac_flags
|= SSL_MAC_FLAG_READ_MAC_STREAM
;
238 s
->mac_flags
&= ~SSL_MAC_FLAG_READ_MAC_STREAM
;
240 if (s
->enc_read_ctx
!= NULL
)
242 else if ((s
->enc_read_ctx
= EVP_CIPHER_CTX_new()) == NULL
)
246 * make sure it's intialized in case we exit later with an error
248 EVP_CIPHER_CTX_reset(s
->enc_read_ctx
);
249 dd
= s
->enc_read_ctx
;
250 mac_ctx
= ssl_replace_hash(&s
->read_hash
, NULL
);
253 #ifndef OPENSSL_NO_COMP
254 COMP_CTX_free(s
->expand
);
257 s
->expand
= COMP_CTX_new(comp
->method
);
258 if (s
->expand
== NULL
) {
259 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
,
260 SSL_R_COMPRESSION_LIBRARY_ERROR
);
263 if (!RECORD_LAYER_setup_comp_buffer(&s
->rlayer
))
268 * this is done by dtls1_reset_seq_numbers for DTLS
271 RECORD_LAYER_reset_read_sequence(&s
->rlayer
);
272 mac_secret
= &(s
->s3
->read_mac_secret
[0]);
273 mac_secret_size
= &(s
->s3
->read_mac_secret_size
);
275 if (s
->s3
->tmp
.new_cipher
->algorithm2
& TLS1_STREAM_MAC
)
276 s
->mac_flags
|= SSL_MAC_FLAG_WRITE_MAC_STREAM
;
278 s
->mac_flags
&= ~SSL_MAC_FLAG_WRITE_MAC_STREAM
;
279 if (s
->enc_write_ctx
!= NULL
&& !SSL_IS_DTLS(s
))
281 else if ((s
->enc_write_ctx
= EVP_CIPHER_CTX_new()) == NULL
)
283 dd
= s
->enc_write_ctx
;
284 if (SSL_IS_DTLS(s
)) {
285 mac_ctx
= EVP_MD_CTX_new();
288 s
->write_hash
= mac_ctx
;
290 mac_ctx
= ssl_replace_hash(&s
->write_hash
, NULL
);
294 #ifndef OPENSSL_NO_COMP
295 COMP_CTX_free(s
->compress
);
298 s
->compress
= COMP_CTX_new(comp
->method
);
299 if (s
->compress
== NULL
) {
300 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
,
301 SSL_R_COMPRESSION_LIBRARY_ERROR
);
307 * this is done by dtls1_reset_seq_numbers for DTLS
310 RECORD_LAYER_reset_write_sequence(&s
->rlayer
);
311 mac_secret
= &(s
->s3
->write_mac_secret
[0]);
312 mac_secret_size
= &(s
->s3
->write_mac_secret_size
);
316 EVP_CIPHER_CTX_reset(dd
);
318 p
= s
->s3
->tmp
.key_block
;
319 i
= *mac_secret_size
= s
->s3
->tmp
.new_mac_secret_size
;
321 cl
= EVP_CIPHER_key_length(c
);
323 /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
324 /* If GCM/CCM mode only part of IV comes from PRF */
325 if (EVP_CIPHER_mode(c
) == EVP_CIPH_GCM_MODE
)
326 k
= EVP_GCM_TLS_FIXED_IV_LEN
;
327 else if (EVP_CIPHER_mode(c
) == EVP_CIPH_CCM_MODE
)
328 k
= EVP_CCM_TLS_FIXED_IV_LEN
;
330 k
= EVP_CIPHER_iv_length(c
);
331 if ((which
== SSL3_CHANGE_CIPHER_CLIENT_WRITE
) ||
332 (which
== SSL3_CHANGE_CIPHER_SERVER_READ
)) {
349 if (n
> s
->s3
->tmp
.key_block_length
) {
350 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
354 memcpy(mac_secret
, ms
, i
);
356 if (!(EVP_CIPHER_flags(c
) & EVP_CIPH_FLAG_AEAD_CIPHER
)) {
357 mac_key
= EVP_PKEY_new_mac_key(mac_type
, NULL
,
358 mac_secret
, *mac_secret_size
);
360 || EVP_DigestSignInit(mac_ctx
, NULL
, m
, NULL
, mac_key
) <= 0) {
361 EVP_PKEY_free(mac_key
);
362 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
365 EVP_PKEY_free(mac_key
);
368 printf("which = %04X\nmac key=", which
);
371 for (z
= 0; z
< i
; z
++)
372 printf("%02X%c", ms
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
376 if (EVP_CIPHER_mode(c
) == EVP_CIPH_GCM_MODE
) {
377 if (!EVP_CipherInit_ex(dd
, c
, NULL
, key
, NULL
, (which
& SSL3_CC_WRITE
))
378 || !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_GCM_SET_IV_FIXED
, k
, iv
)) {
379 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
382 } else if (EVP_CIPHER_mode(c
) == EVP_CIPH_CCM_MODE
) {
384 if (s
->s3
->tmp
.new_cipher
->algorithm_enc
& (SSL_AES128CCM8
|SSL_AES256CCM8
))
388 if (!EVP_CipherInit_ex(dd
, c
, NULL
, NULL
, NULL
, (which
& SSL3_CC_WRITE
))
389 || !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_AEAD_SET_IVLEN
, 12, NULL
)
390 || !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_AEAD_SET_TAG
, taglen
, NULL
)
391 || !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_CCM_SET_IV_FIXED
, k
, iv
)
392 || !EVP_CipherInit_ex(dd
, NULL
, NULL
, key
, NULL
, -1)) {
393 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
397 if (!EVP_CipherInit_ex(dd
, c
, NULL
, key
, iv
, (which
& SSL3_CC_WRITE
))) {
398 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
402 /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */
403 if ((EVP_CIPHER_flags(c
) & EVP_CIPH_FLAG_AEAD_CIPHER
) && *mac_secret_size
404 && !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_AEAD_SET_MAC_KEY
,
405 *mac_secret_size
, mac_secret
)) {
406 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
409 #ifdef OPENSSL_SSL_TRACE_CRYPTO
410 if (s
->msg_callback
) {
411 int wh
= which
& SSL3_CC_WRITE
? TLS1_RT_CRYPTO_WRITE
: 0;
412 if (*mac_secret_size
)
413 s
->msg_callback(2, s
->version
, wh
| TLS1_RT_CRYPTO_MAC
,
414 mac_secret
, *mac_secret_size
,
415 s
, s
->msg_callback_arg
);
417 s
->msg_callback(2, s
->version
, wh
| TLS1_RT_CRYPTO_KEY
,
418 key
, c
->key_len
, s
, s
->msg_callback_arg
);
420 if (EVP_CIPHER_mode(c
) == EVP_CIPH_GCM_MODE
)
421 wh
|= TLS1_RT_CRYPTO_FIXED_IV
;
423 wh
|= TLS1_RT_CRYPTO_IV
;
424 s
->msg_callback(2, s
->version
, wh
, iv
, k
, s
, s
->msg_callback_arg
);
430 printf("which = %04X\nkey=", which
);
433 for (z
= 0; z
< EVP_CIPHER_key_length(c
); z
++)
434 printf("%02X%c", key
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
439 for (z
= 0; z
< k
; z
++)
440 printf("%02X%c", iv
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
445 OPENSSL_cleanse(tmp1
, sizeof(tmp1
));
446 OPENSSL_cleanse(tmp2
, sizeof(tmp1
));
447 OPENSSL_cleanse(iv1
, sizeof(iv1
));
448 OPENSSL_cleanse(iv2
, sizeof(iv2
));
451 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_MALLOC_FAILURE
);
453 OPENSSL_cleanse(tmp1
, sizeof(tmp1
));
454 OPENSSL_cleanse(tmp2
, sizeof(tmp1
));
455 OPENSSL_cleanse(iv1
, sizeof(iv1
));
456 OPENSSL_cleanse(iv2
, sizeof(iv2
));
460 int tls1_setup_key_block(SSL
*s
)
467 int mac_type
= NID_undef
, mac_secret_size
= 0;
470 if (s
->s3
->tmp
.key_block_length
!= 0)
473 if (!ssl_cipher_get_evp
474 (s
->session
, &c
, &hash
, &mac_type
, &mac_secret_size
, &comp
,
476 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK
, SSL_R_CIPHER_OR_HASH_UNAVAILABLE
);
480 s
->s3
->tmp
.new_sym_enc
= c
;
481 s
->s3
->tmp
.new_hash
= hash
;
482 s
->s3
->tmp
.new_mac_pkey_type
= mac_type
;
483 s
->s3
->tmp
.new_mac_secret_size
= mac_secret_size
;
485 EVP_CIPHER_key_length(c
) + mac_secret_size
+ EVP_CIPHER_iv_length(c
);
488 ssl3_cleanup_key_block(s
);
490 if ((p
= OPENSSL_malloc(num
)) == NULL
) {
491 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK
, ERR_R_MALLOC_FAILURE
);
495 s
->s3
->tmp
.key_block_length
= num
;
496 s
->s3
->tmp
.key_block
= p
;
499 printf("client random\n");
502 for (z
= 0; z
< SSL3_RANDOM_SIZE
; z
++)
503 printf("%02X%c", s
->s3
->client_random
[z
],
504 ((z
+ 1) % 16) ? ' ' : '\n');
506 printf("server random\n");
509 for (z
= 0; z
< SSL3_RANDOM_SIZE
; z
++)
510 printf("%02X%c", s
->s3
->server_random
[z
],
511 ((z
+ 1) % 16) ? ' ' : '\n');
513 printf("master key\n");
516 for (z
= 0; z
< s
->session
->master_key_length
; z
++)
517 printf("%02X%c", s
->session
->master_key
[z
],
518 ((z
+ 1) % 16) ? ' ' : '\n');
521 if (!tls1_generate_key_block(s
, p
, num
))
524 printf("\nkey block\n");
527 for (z
= 0; z
< num
; z
++)
528 printf("%02X%c", p1
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
532 if (!(s
->options
& SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
)
533 && s
->method
->version
<= TLS1_VERSION
) {
535 * enable vulnerability countermeasure for CBC ciphers with known-IV
536 * problem (http://www.openssl.org/~bodo/tls-cbc.txt)
538 s
->s3
->need_empty_fragments
= 1;
540 if (s
->session
->cipher
!= NULL
) {
541 if (s
->session
->cipher
->algorithm_enc
== SSL_eNULL
)
542 s
->s3
->need_empty_fragments
= 0;
544 #ifndef OPENSSL_NO_RC4
545 if (s
->session
->cipher
->algorithm_enc
== SSL_RC4
)
546 s
->s3
->need_empty_fragments
= 0;
556 int tls1_final_finish_mac(SSL
*s
, const char *str
, int slen
,
560 unsigned char hash
[EVP_MAX_MD_SIZE
];
562 if (!ssl3_digest_cached_records(s
, 0))
565 hashlen
= ssl_handshake_hash(s
, hash
, sizeof(hash
));
570 if (!tls1_PRF(s
, str
, slen
, hash
, hashlen
, NULL
, 0, NULL
, 0, NULL
, 0,
571 s
->session
->master_key
, s
->session
->master_key_length
,
572 out
, TLS1_FINISH_MAC_LENGTH
))
574 OPENSSL_cleanse(hash
, hashlen
);
575 return TLS1_FINISH_MAC_LENGTH
;
578 int tls1_generate_master_secret(SSL
*s
, unsigned char *out
, unsigned char *p
,
581 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
) {
582 unsigned char hash
[EVP_MAX_MD_SIZE
* 2];
584 /* Digest cached records keeping record buffer (if present):
585 * this wont affect client auth because we're freezing the buffer
586 * at the same point (after client key exchange and before certificate
589 if (!ssl3_digest_cached_records(s
, 1))
591 hashlen
= ssl_handshake_hash(s
, hash
, sizeof(hash
));
593 fprintf(stderr
, "Handshake hashes:\n");
594 BIO_dump_fp(stderr
, (char *)hash
, hashlen
);
597 TLS_MD_EXTENDED_MASTER_SECRET_CONST
,
598 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE
,
602 NULL
, 0, p
, len
, s
->session
->master_key
,
603 SSL3_MASTER_SECRET_SIZE
);
604 OPENSSL_cleanse(hash
, hashlen
);
607 TLS_MD_MASTER_SECRET_CONST
,
608 TLS_MD_MASTER_SECRET_CONST_SIZE
,
609 s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
611 s
->s3
->server_random
, SSL3_RANDOM_SIZE
,
612 NULL
, 0, p
, len
, s
->session
->master_key
,
613 SSL3_MASTER_SECRET_SIZE
);
616 fprintf(stderr
, "Premaster Secret:\n");
617 BIO_dump_fp(stderr
, (char *)p
, len
);
618 fprintf(stderr
, "Client Random:\n");
619 BIO_dump_fp(stderr
, (char *)s
->s3
->client_random
, SSL3_RANDOM_SIZE
);
620 fprintf(stderr
, "Server Random:\n");
621 BIO_dump_fp(stderr
, (char *)s
->s3
->server_random
, SSL3_RANDOM_SIZE
);
622 fprintf(stderr
, "Master Secret:\n");
623 BIO_dump_fp(stderr
, (char *)s
->session
->master_key
,
624 SSL3_MASTER_SECRET_SIZE
);
627 #ifdef OPENSSL_SSL_TRACE_CRYPTO
628 if (s
->msg_callback
) {
629 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_PREMASTER
,
630 p
, len
, s
, s
->msg_callback_arg
);
631 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_CLIENT_RANDOM
,
632 s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
633 s
, s
->msg_callback_arg
);
634 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_SERVER_RANDOM
,
635 s
->s3
->server_random
, SSL3_RANDOM_SIZE
,
636 s
, s
->msg_callback_arg
);
637 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_MASTER
,
638 s
->session
->master_key
,
639 SSL3_MASTER_SECRET_SIZE
, s
, s
->msg_callback_arg
);
643 return (SSL3_MASTER_SECRET_SIZE
);
646 int tls1_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
647 const char *label
, size_t llen
,
648 const unsigned char *context
,
649 size_t contextlen
, int use_context
)
652 unsigned char *val
= NULL
;
653 size_t vallen
= 0, currentvalpos
;
656 buff
= OPENSSL_malloc(olen
);
661 * construct PRF arguments we construct the PRF argument ourself rather
662 * than passing separate values into the TLS PRF to ensure that the
663 * concatenation of values does not create a prohibited label.
665 vallen
= llen
+ SSL3_RANDOM_SIZE
* 2;
667 vallen
+= 2 + contextlen
;
670 val
= OPENSSL_malloc(vallen
);
674 memcpy(val
+ currentvalpos
, (unsigned char *)label
, llen
);
675 currentvalpos
+= llen
;
676 memcpy(val
+ currentvalpos
, s
->s3
->client_random
, SSL3_RANDOM_SIZE
);
677 currentvalpos
+= SSL3_RANDOM_SIZE
;
678 memcpy(val
+ currentvalpos
, s
->s3
->server_random
, SSL3_RANDOM_SIZE
);
679 currentvalpos
+= SSL3_RANDOM_SIZE
;
682 val
[currentvalpos
] = (contextlen
>> 8) & 0xff;
684 val
[currentvalpos
] = contextlen
& 0xff;
686 if ((contextlen
> 0) || (context
!= NULL
)) {
687 memcpy(val
+ currentvalpos
, context
, contextlen
);
692 * disallow prohibited labels note that SSL3_RANDOM_SIZE > max(prohibited
693 * label len) = 15, so size of val > max(prohibited label len) = 15 and
694 * the comparisons won't have buffer overflow
696 if (memcmp(val
, TLS_MD_CLIENT_FINISH_CONST
,
697 TLS_MD_CLIENT_FINISH_CONST_SIZE
) == 0)
699 if (memcmp(val
, TLS_MD_SERVER_FINISH_CONST
,
700 TLS_MD_SERVER_FINISH_CONST_SIZE
) == 0)
702 if (memcmp(val
, TLS_MD_MASTER_SECRET_CONST
,
703 TLS_MD_MASTER_SECRET_CONST_SIZE
) == 0)
705 if (memcmp(val
, TLS_MD_EXTENDED_MASTER_SECRET_CONST
,
706 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE
) == 0)
708 if (memcmp(val
, TLS_MD_KEY_EXPANSION_CONST
,
709 TLS_MD_KEY_EXPANSION_CONST_SIZE
) == 0)
718 s
->session
->master_key
, s
->session
->master_key_length
,
723 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL
,
724 SSL_R_TLS_ILLEGAL_EXPORTER_LABEL
);
728 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL
, ERR_R_MALLOC_FAILURE
);
731 OPENSSL_clear_free(val
, vallen
);
732 OPENSSL_clear_free(buff
, olen
);
736 int tls1_alert_code(int code
)
739 case SSL_AD_CLOSE_NOTIFY
:
740 return (SSL3_AD_CLOSE_NOTIFY
);
741 case SSL_AD_UNEXPECTED_MESSAGE
:
742 return (SSL3_AD_UNEXPECTED_MESSAGE
);
743 case SSL_AD_BAD_RECORD_MAC
:
744 return (SSL3_AD_BAD_RECORD_MAC
);
745 case SSL_AD_DECRYPTION_FAILED
:
746 return (TLS1_AD_DECRYPTION_FAILED
);
747 case SSL_AD_RECORD_OVERFLOW
:
748 return (TLS1_AD_RECORD_OVERFLOW
);
749 case SSL_AD_DECOMPRESSION_FAILURE
:
750 return (SSL3_AD_DECOMPRESSION_FAILURE
);
751 case SSL_AD_HANDSHAKE_FAILURE
:
752 return (SSL3_AD_HANDSHAKE_FAILURE
);
753 case SSL_AD_NO_CERTIFICATE
:
755 case SSL_AD_BAD_CERTIFICATE
:
756 return (SSL3_AD_BAD_CERTIFICATE
);
757 case SSL_AD_UNSUPPORTED_CERTIFICATE
:
758 return (SSL3_AD_UNSUPPORTED_CERTIFICATE
);
759 case SSL_AD_CERTIFICATE_REVOKED
:
760 return (SSL3_AD_CERTIFICATE_REVOKED
);
761 case SSL_AD_CERTIFICATE_EXPIRED
:
762 return (SSL3_AD_CERTIFICATE_EXPIRED
);
763 case SSL_AD_CERTIFICATE_UNKNOWN
:
764 return (SSL3_AD_CERTIFICATE_UNKNOWN
);
765 case SSL_AD_ILLEGAL_PARAMETER
:
766 return (SSL3_AD_ILLEGAL_PARAMETER
);
767 case SSL_AD_UNKNOWN_CA
:
768 return (TLS1_AD_UNKNOWN_CA
);
769 case SSL_AD_ACCESS_DENIED
:
770 return (TLS1_AD_ACCESS_DENIED
);
771 case SSL_AD_DECODE_ERROR
:
772 return (TLS1_AD_DECODE_ERROR
);
773 case SSL_AD_DECRYPT_ERROR
:
774 return (TLS1_AD_DECRYPT_ERROR
);
775 case SSL_AD_EXPORT_RESTRICTION
:
776 return (TLS1_AD_EXPORT_RESTRICTION
);
777 case SSL_AD_PROTOCOL_VERSION
:
778 return (TLS1_AD_PROTOCOL_VERSION
);
779 case SSL_AD_INSUFFICIENT_SECURITY
:
780 return (TLS1_AD_INSUFFICIENT_SECURITY
);
781 case SSL_AD_INTERNAL_ERROR
:
782 return (TLS1_AD_INTERNAL_ERROR
);
783 case SSL_AD_USER_CANCELLED
:
784 return (TLS1_AD_USER_CANCELLED
);
785 case SSL_AD_NO_RENEGOTIATION
:
786 return (TLS1_AD_NO_RENEGOTIATION
);
787 case SSL_AD_UNSUPPORTED_EXTENSION
:
788 return (TLS1_AD_UNSUPPORTED_EXTENSION
);
789 case SSL_AD_CERTIFICATE_UNOBTAINABLE
:
790 return (TLS1_AD_CERTIFICATE_UNOBTAINABLE
);
791 case SSL_AD_UNRECOGNIZED_NAME
:
792 return (TLS1_AD_UNRECOGNIZED_NAME
);
793 case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE
:
794 return (TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
);
795 case SSL_AD_BAD_CERTIFICATE_HASH_VALUE
:
796 return (TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
);
797 case SSL_AD_UNKNOWN_PSK_IDENTITY
:
798 return (TLS1_AD_UNKNOWN_PSK_IDENTITY
);
799 case SSL_AD_INAPPROPRIATE_FALLBACK
:
800 return (TLS1_AD_INAPPROPRIATE_FALLBACK
);