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 #include <openssl/comp.h>
140 #include <openssl/evp.h>
141 #include <openssl/kdf.h>
142 #include <openssl/rand.h>
144 /* seed1 through seed5 are concatenated */
145 static int tls1_PRF(SSL
*s
,
146 const void *seed1
, int seed1_len
,
147 const void *seed2
, int seed2_len
,
148 const void *seed3
, int seed3_len
,
149 const void *seed4
, int seed4_len
,
150 const void *seed5
, int seed5_len
,
151 const unsigned char *sec
, int slen
,
152 unsigned char *out
, int olen
)
154 const EVP_MD
*md
= ssl_prf_md(s
);
155 EVP_PKEY_CTX
*pctx
= NULL
;
158 size_t outlen
= olen
;
161 /* Should never happen */
162 SSLerr(SSL_F_TLS1_PRF
, ERR_R_INTERNAL_ERROR
);
165 pctx
= EVP_PKEY_CTX_new_id(EVP_PKEY_TLS1_PRF
, NULL
);
166 if (pctx
== NULL
|| EVP_PKEY_derive_init(pctx
) <= 0
167 || EVP_PKEY_CTX_set_tls1_prf_md(pctx
, md
) <= 0
168 || EVP_PKEY_CTX_set1_tls1_prf_secret(pctx
, sec
, slen
) <= 0)
171 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx
, seed1
, seed1_len
) <= 0)
173 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx
, seed2
, seed2_len
) <= 0)
175 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx
, seed3
, seed3_len
) <= 0)
177 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx
, seed4
, seed4_len
) <= 0)
179 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx
, seed5
, seed5_len
) <= 0)
182 if (EVP_PKEY_derive(pctx
, out
, &outlen
) <= 0)
187 EVP_PKEY_CTX_free(pctx
);
191 static int tls1_generate_key_block(SSL
*s
, unsigned char *km
, int num
)
195 TLS_MD_KEY_EXPANSION_CONST
,
196 TLS_MD_KEY_EXPANSION_CONST_SIZE
, s
->s3
->server_random
,
197 SSL3_RANDOM_SIZE
, s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
198 NULL
, 0, NULL
, 0, s
->session
->master_key
,
199 s
->session
->master_key_length
, km
, num
);
204 int tls1_change_cipher_state(SSL
*s
, int which
)
206 unsigned char *p
, *mac_secret
;
207 unsigned char tmp1
[EVP_MAX_KEY_LENGTH
];
208 unsigned char tmp2
[EVP_MAX_KEY_LENGTH
];
209 unsigned char iv1
[EVP_MAX_IV_LENGTH
* 2];
210 unsigned char iv2
[EVP_MAX_IV_LENGTH
* 2];
211 unsigned char *ms
, *key
, *iv
;
214 #ifndef OPENSSL_NO_COMP
215 const SSL_COMP
*comp
;
219 int *mac_secret_size
;
225 c
= s
->s3
->tmp
.new_sym_enc
;
226 m
= s
->s3
->tmp
.new_hash
;
227 mac_type
= s
->s3
->tmp
.new_mac_pkey_type
;
228 #ifndef OPENSSL_NO_COMP
229 comp
= s
->s3
->tmp
.new_compression
;
232 if (which
& SSL3_CC_READ
) {
233 if (s
->s3
->tmp
.new_cipher
->algorithm2
& TLS1_STREAM_MAC
)
234 s
->mac_flags
|= SSL_MAC_FLAG_READ_MAC_STREAM
;
236 s
->mac_flags
&= ~SSL_MAC_FLAG_READ_MAC_STREAM
;
238 if (s
->enc_read_ctx
!= NULL
)
240 else if ((s
->enc_read_ctx
= EVP_CIPHER_CTX_new()) == NULL
)
244 * make sure it's intialized in case we exit later with an error
246 EVP_CIPHER_CTX_reset(s
->enc_read_ctx
);
247 dd
= s
->enc_read_ctx
;
248 mac_ctx
= ssl_replace_hash(&s
->read_hash
, NULL
);
251 #ifndef OPENSSL_NO_COMP
252 COMP_CTX_free(s
->expand
);
255 s
->expand
= COMP_CTX_new(comp
->method
);
256 if (s
->expand
== NULL
) {
257 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
,
258 SSL_R_COMPRESSION_LIBRARY_ERROR
);
264 * this is done by dtls1_reset_seq_numbers for DTLS
267 RECORD_LAYER_reset_read_sequence(&s
->rlayer
);
268 mac_secret
= &(s
->s3
->read_mac_secret
[0]);
269 mac_secret_size
= &(s
->s3
->read_mac_secret_size
);
271 if (s
->s3
->tmp
.new_cipher
->algorithm2
& TLS1_STREAM_MAC
)
272 s
->mac_flags
|= SSL_MAC_FLAG_WRITE_MAC_STREAM
;
274 s
->mac_flags
&= ~SSL_MAC_FLAG_WRITE_MAC_STREAM
;
275 if (s
->enc_write_ctx
!= NULL
&& !SSL_IS_DTLS(s
))
277 else if ((s
->enc_write_ctx
= EVP_CIPHER_CTX_new()) == NULL
)
279 dd
= s
->enc_write_ctx
;
280 if (SSL_IS_DTLS(s
)) {
281 mac_ctx
= EVP_MD_CTX_new();
284 s
->write_hash
= mac_ctx
;
286 mac_ctx
= ssl_replace_hash(&s
->write_hash
, NULL
);
290 #ifndef OPENSSL_NO_COMP
291 COMP_CTX_free(s
->compress
);
294 s
->compress
= COMP_CTX_new(comp
->method
);
295 if (s
->compress
== NULL
) {
296 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
,
297 SSL_R_COMPRESSION_LIBRARY_ERROR
);
303 * this is done by dtls1_reset_seq_numbers for DTLS
306 RECORD_LAYER_reset_write_sequence(&s
->rlayer
);
307 mac_secret
= &(s
->s3
->write_mac_secret
[0]);
308 mac_secret_size
= &(s
->s3
->write_mac_secret_size
);
312 EVP_CIPHER_CTX_reset(dd
);
314 p
= s
->s3
->tmp
.key_block
;
315 i
= *mac_secret_size
= s
->s3
->tmp
.new_mac_secret_size
;
317 cl
= EVP_CIPHER_key_length(c
);
319 /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
320 /* If GCM/CCM mode only part of IV comes from PRF */
321 if (EVP_CIPHER_mode(c
) == EVP_CIPH_GCM_MODE
)
322 k
= EVP_GCM_TLS_FIXED_IV_LEN
;
323 else if (EVP_CIPHER_mode(c
) == EVP_CIPH_CCM_MODE
)
324 k
= EVP_CCM_TLS_FIXED_IV_LEN
;
326 k
= EVP_CIPHER_iv_length(c
);
327 if ((which
== SSL3_CHANGE_CIPHER_CLIENT_WRITE
) ||
328 (which
== SSL3_CHANGE_CIPHER_SERVER_READ
)) {
345 if (n
> s
->s3
->tmp
.key_block_length
) {
346 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
350 memcpy(mac_secret
, ms
, i
);
352 if (!(EVP_CIPHER_flags(c
) & EVP_CIPH_FLAG_AEAD_CIPHER
)) {
353 mac_key
= EVP_PKEY_new_mac_key(mac_type
, NULL
,
354 mac_secret
, *mac_secret_size
);
356 || EVP_DigestSignInit(mac_ctx
, NULL
, m
, NULL
, mac_key
) <= 0) {
357 EVP_PKEY_free(mac_key
);
358 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
361 EVP_PKEY_free(mac_key
);
364 printf("which = %04X\nmac key=", which
);
367 for (z
= 0; z
< i
; z
++)
368 printf("%02X%c", ms
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
372 if (EVP_CIPHER_mode(c
) == EVP_CIPH_GCM_MODE
) {
373 if (!EVP_CipherInit_ex(dd
, c
, NULL
, key
, NULL
, (which
& SSL3_CC_WRITE
))
374 || !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_GCM_SET_IV_FIXED
, k
, iv
)) {
375 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
378 } else if (EVP_CIPHER_mode(c
) == EVP_CIPH_CCM_MODE
) {
380 if (s
->s3
->tmp
.new_cipher
->algorithm_enc
& (SSL_AES128CCM8
|SSL_AES256CCM8
))
384 if (!EVP_CipherInit_ex(dd
, c
, NULL
, NULL
, NULL
, (which
& SSL3_CC_WRITE
))
385 || !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_AEAD_SET_IVLEN
, 12, NULL
)
386 || !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_AEAD_SET_TAG
, taglen
, NULL
)
387 || !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_CCM_SET_IV_FIXED
, k
, iv
)
388 || !EVP_CipherInit_ex(dd
, NULL
, NULL
, key
, NULL
, -1)) {
389 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
393 if (!EVP_CipherInit_ex(dd
, c
, NULL
, key
, iv
, (which
& SSL3_CC_WRITE
))) {
394 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
398 /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */
399 if ((EVP_CIPHER_flags(c
) & EVP_CIPH_FLAG_AEAD_CIPHER
) && *mac_secret_size
400 && !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_AEAD_SET_MAC_KEY
,
401 *mac_secret_size
, mac_secret
)) {
402 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
405 #ifdef OPENSSL_SSL_TRACE_CRYPTO
406 if (s
->msg_callback
) {
407 int wh
= which
& SSL3_CC_WRITE
? TLS1_RT_CRYPTO_WRITE
: 0;
408 if (*mac_secret_size
)
409 s
->msg_callback(2, s
->version
, wh
| TLS1_RT_CRYPTO_MAC
,
410 mac_secret
, *mac_secret_size
,
411 s
, s
->msg_callback_arg
);
413 s
->msg_callback(2, s
->version
, wh
| TLS1_RT_CRYPTO_KEY
,
414 key
, c
->key_len
, s
, s
->msg_callback_arg
);
416 if (EVP_CIPHER_mode(c
) == EVP_CIPH_GCM_MODE
)
417 wh
|= TLS1_RT_CRYPTO_FIXED_IV
;
419 wh
|= TLS1_RT_CRYPTO_IV
;
420 s
->msg_callback(2, s
->version
, wh
, iv
, k
, s
, s
->msg_callback_arg
);
426 printf("which = %04X\nkey=", which
);
429 for (z
= 0; z
< EVP_CIPHER_key_length(c
); z
++)
430 printf("%02X%c", key
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
435 for (z
= 0; z
< k
; z
++)
436 printf("%02X%c", iv
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
441 OPENSSL_cleanse(tmp1
, sizeof(tmp1
));
442 OPENSSL_cleanse(tmp2
, sizeof(tmp1
));
443 OPENSSL_cleanse(iv1
, sizeof(iv1
));
444 OPENSSL_cleanse(iv2
, sizeof(iv2
));
447 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_MALLOC_FAILURE
);
449 OPENSSL_cleanse(tmp1
, sizeof(tmp1
));
450 OPENSSL_cleanse(tmp2
, sizeof(tmp1
));
451 OPENSSL_cleanse(iv1
, sizeof(iv1
));
452 OPENSSL_cleanse(iv2
, sizeof(iv2
));
456 int tls1_setup_key_block(SSL
*s
)
463 int mac_type
= NID_undef
, mac_secret_size
= 0;
466 if (s
->s3
->tmp
.key_block_length
!= 0)
469 if (!ssl_cipher_get_evp
470 (s
->session
, &c
, &hash
, &mac_type
, &mac_secret_size
, &comp
,
472 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK
, SSL_R_CIPHER_OR_HASH_UNAVAILABLE
);
476 s
->s3
->tmp
.new_sym_enc
= c
;
477 s
->s3
->tmp
.new_hash
= hash
;
478 s
->s3
->tmp
.new_mac_pkey_type
= mac_type
;
479 s
->s3
->tmp
.new_mac_secret_size
= mac_secret_size
;
481 EVP_CIPHER_key_length(c
) + mac_secret_size
+ EVP_CIPHER_iv_length(c
);
484 ssl3_cleanup_key_block(s
);
486 if ((p
= OPENSSL_malloc(num
)) == NULL
) {
487 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK
, ERR_R_MALLOC_FAILURE
);
491 s
->s3
->tmp
.key_block_length
= num
;
492 s
->s3
->tmp
.key_block
= p
;
495 printf("client random\n");
498 for (z
= 0; z
< SSL3_RANDOM_SIZE
; z
++)
499 printf("%02X%c", s
->s3
->client_random
[z
],
500 ((z
+ 1) % 16) ? ' ' : '\n');
502 printf("server random\n");
505 for (z
= 0; z
< SSL3_RANDOM_SIZE
; z
++)
506 printf("%02X%c", s
->s3
->server_random
[z
],
507 ((z
+ 1) % 16) ? ' ' : '\n');
509 printf("master key\n");
512 for (z
= 0; z
< s
->session
->master_key_length
; z
++)
513 printf("%02X%c", s
->session
->master_key
[z
],
514 ((z
+ 1) % 16) ? ' ' : '\n');
517 if (!tls1_generate_key_block(s
, p
, num
))
520 printf("\nkey block\n");
523 for (z
= 0; z
< num
; z
++)
524 printf("%02X%c", p
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
528 if (!(s
->options
& SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
)
529 && s
->method
->version
<= TLS1_VERSION
) {
531 * enable vulnerability countermeasure for CBC ciphers with known-IV
532 * problem (http://www.openssl.org/~bodo/tls-cbc.txt)
534 s
->s3
->need_empty_fragments
= 1;
536 if (s
->session
->cipher
!= NULL
) {
537 if (s
->session
->cipher
->algorithm_enc
== SSL_eNULL
)
538 s
->s3
->need_empty_fragments
= 0;
540 #ifndef OPENSSL_NO_RC4
541 if (s
->session
->cipher
->algorithm_enc
== SSL_RC4
)
542 s
->s3
->need_empty_fragments
= 0;
552 int tls1_final_finish_mac(SSL
*s
, const char *str
, int slen
,
556 unsigned char hash
[EVP_MAX_MD_SIZE
];
558 if (!ssl3_digest_cached_records(s
, 0))
561 hashlen
= ssl_handshake_hash(s
, hash
, sizeof(hash
));
566 if (!tls1_PRF(s
, str
, slen
, hash
, hashlen
, NULL
, 0, NULL
, 0, NULL
, 0,
567 s
->session
->master_key
, s
->session
->master_key_length
,
568 out
, TLS1_FINISH_MAC_LENGTH
))
570 OPENSSL_cleanse(hash
, hashlen
);
571 return TLS1_FINISH_MAC_LENGTH
;
574 int tls1_generate_master_secret(SSL
*s
, unsigned char *out
, unsigned char *p
,
577 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
) {
578 unsigned char hash
[EVP_MAX_MD_SIZE
* 2];
580 /* Digest cached records keeping record buffer (if present):
581 * this wont affect client auth because we're freezing the buffer
582 * at the same point (after client key exchange and before certificate
585 if (!ssl3_digest_cached_records(s
, 1))
587 hashlen
= ssl_handshake_hash(s
, hash
, sizeof(hash
));
589 fprintf(stderr
, "Handshake hashes:\n");
590 BIO_dump_fp(stderr
, (char *)hash
, hashlen
);
593 TLS_MD_EXTENDED_MASTER_SECRET_CONST
,
594 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE
,
598 NULL
, 0, p
, len
, s
->session
->master_key
,
599 SSL3_MASTER_SECRET_SIZE
);
600 OPENSSL_cleanse(hash
, hashlen
);
603 TLS_MD_MASTER_SECRET_CONST
,
604 TLS_MD_MASTER_SECRET_CONST_SIZE
,
605 s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
607 s
->s3
->server_random
, SSL3_RANDOM_SIZE
,
608 NULL
, 0, p
, len
, s
->session
->master_key
,
609 SSL3_MASTER_SECRET_SIZE
);
612 fprintf(stderr
, "Premaster Secret:\n");
613 BIO_dump_fp(stderr
, (char *)p
, len
);
614 fprintf(stderr
, "Client Random:\n");
615 BIO_dump_fp(stderr
, (char *)s
->s3
->client_random
, SSL3_RANDOM_SIZE
);
616 fprintf(stderr
, "Server Random:\n");
617 BIO_dump_fp(stderr
, (char *)s
->s3
->server_random
, SSL3_RANDOM_SIZE
);
618 fprintf(stderr
, "Master Secret:\n");
619 BIO_dump_fp(stderr
, (char *)s
->session
->master_key
,
620 SSL3_MASTER_SECRET_SIZE
);
623 #ifdef OPENSSL_SSL_TRACE_CRYPTO
624 if (s
->msg_callback
) {
625 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_PREMASTER
,
626 p
, len
, s
, s
->msg_callback_arg
);
627 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_CLIENT_RANDOM
,
628 s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
629 s
, s
->msg_callback_arg
);
630 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_SERVER_RANDOM
,
631 s
->s3
->server_random
, SSL3_RANDOM_SIZE
,
632 s
, s
->msg_callback_arg
);
633 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_MASTER
,
634 s
->session
->master_key
,
635 SSL3_MASTER_SECRET_SIZE
, s
, s
->msg_callback_arg
);
639 return (SSL3_MASTER_SECRET_SIZE
);
642 int tls1_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
643 const char *label
, size_t llen
,
644 const unsigned char *context
,
645 size_t contextlen
, int use_context
)
647 unsigned char *val
= NULL
;
648 size_t vallen
= 0, currentvalpos
;
652 * construct PRF arguments we construct the PRF argument ourself rather
653 * than passing separate values into the TLS PRF to ensure that the
654 * concatenation of values does not create a prohibited label.
656 vallen
= llen
+ SSL3_RANDOM_SIZE
* 2;
658 vallen
+= 2 + contextlen
;
661 val
= OPENSSL_malloc(vallen
);
665 memcpy(val
+ currentvalpos
, (unsigned char *)label
, llen
);
666 currentvalpos
+= llen
;
667 memcpy(val
+ currentvalpos
, s
->s3
->client_random
, SSL3_RANDOM_SIZE
);
668 currentvalpos
+= SSL3_RANDOM_SIZE
;
669 memcpy(val
+ currentvalpos
, s
->s3
->server_random
, SSL3_RANDOM_SIZE
);
670 currentvalpos
+= SSL3_RANDOM_SIZE
;
673 val
[currentvalpos
] = (contextlen
>> 8) & 0xff;
675 val
[currentvalpos
] = contextlen
& 0xff;
677 if ((contextlen
> 0) || (context
!= NULL
)) {
678 memcpy(val
+ currentvalpos
, context
, contextlen
);
683 * disallow prohibited labels note that SSL3_RANDOM_SIZE > max(prohibited
684 * label len) = 15, so size of val > max(prohibited label len) = 15 and
685 * the comparisons won't have buffer overflow
687 if (memcmp(val
, TLS_MD_CLIENT_FINISH_CONST
,
688 TLS_MD_CLIENT_FINISH_CONST_SIZE
) == 0)
690 if (memcmp(val
, TLS_MD_SERVER_FINISH_CONST
,
691 TLS_MD_SERVER_FINISH_CONST_SIZE
) == 0)
693 if (memcmp(val
, TLS_MD_MASTER_SECRET_CONST
,
694 TLS_MD_MASTER_SECRET_CONST_SIZE
) == 0)
696 if (memcmp(val
, TLS_MD_EXTENDED_MASTER_SECRET_CONST
,
697 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE
) == 0)
699 if (memcmp(val
, TLS_MD_KEY_EXPANSION_CONST
,
700 TLS_MD_KEY_EXPANSION_CONST_SIZE
) == 0)
709 s
->session
->master_key
, s
->session
->master_key_length
,
714 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL
,
715 SSL_R_TLS_ILLEGAL_EXPORTER_LABEL
);
719 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL
, ERR_R_MALLOC_FAILURE
);
722 OPENSSL_clear_free(val
, vallen
);
726 int tls1_alert_code(int code
)
729 case SSL_AD_CLOSE_NOTIFY
:
730 return (SSL3_AD_CLOSE_NOTIFY
);
731 case SSL_AD_UNEXPECTED_MESSAGE
:
732 return (SSL3_AD_UNEXPECTED_MESSAGE
);
733 case SSL_AD_BAD_RECORD_MAC
:
734 return (SSL3_AD_BAD_RECORD_MAC
);
735 case SSL_AD_DECRYPTION_FAILED
:
736 return (TLS1_AD_DECRYPTION_FAILED
);
737 case SSL_AD_RECORD_OVERFLOW
:
738 return (TLS1_AD_RECORD_OVERFLOW
);
739 case SSL_AD_DECOMPRESSION_FAILURE
:
740 return (SSL3_AD_DECOMPRESSION_FAILURE
);
741 case SSL_AD_HANDSHAKE_FAILURE
:
742 return (SSL3_AD_HANDSHAKE_FAILURE
);
743 case SSL_AD_NO_CERTIFICATE
:
745 case SSL_AD_BAD_CERTIFICATE
:
746 return (SSL3_AD_BAD_CERTIFICATE
);
747 case SSL_AD_UNSUPPORTED_CERTIFICATE
:
748 return (SSL3_AD_UNSUPPORTED_CERTIFICATE
);
749 case SSL_AD_CERTIFICATE_REVOKED
:
750 return (SSL3_AD_CERTIFICATE_REVOKED
);
751 case SSL_AD_CERTIFICATE_EXPIRED
:
752 return (SSL3_AD_CERTIFICATE_EXPIRED
);
753 case SSL_AD_CERTIFICATE_UNKNOWN
:
754 return (SSL3_AD_CERTIFICATE_UNKNOWN
);
755 case SSL_AD_ILLEGAL_PARAMETER
:
756 return (SSL3_AD_ILLEGAL_PARAMETER
);
757 case SSL_AD_UNKNOWN_CA
:
758 return (TLS1_AD_UNKNOWN_CA
);
759 case SSL_AD_ACCESS_DENIED
:
760 return (TLS1_AD_ACCESS_DENIED
);
761 case SSL_AD_DECODE_ERROR
:
762 return (TLS1_AD_DECODE_ERROR
);
763 case SSL_AD_DECRYPT_ERROR
:
764 return (TLS1_AD_DECRYPT_ERROR
);
765 case SSL_AD_EXPORT_RESTRICTION
:
766 return (TLS1_AD_EXPORT_RESTRICTION
);
767 case SSL_AD_PROTOCOL_VERSION
:
768 return (TLS1_AD_PROTOCOL_VERSION
);
769 case SSL_AD_INSUFFICIENT_SECURITY
:
770 return (TLS1_AD_INSUFFICIENT_SECURITY
);
771 case SSL_AD_INTERNAL_ERROR
:
772 return (TLS1_AD_INTERNAL_ERROR
);
773 case SSL_AD_USER_CANCELLED
:
774 return (TLS1_AD_USER_CANCELLED
);
775 case SSL_AD_NO_RENEGOTIATION
:
776 return (TLS1_AD_NO_RENEGOTIATION
);
777 case SSL_AD_UNSUPPORTED_EXTENSION
:
778 return (TLS1_AD_UNSUPPORTED_EXTENSION
);
779 case SSL_AD_CERTIFICATE_UNOBTAINABLE
:
780 return (TLS1_AD_CERTIFICATE_UNOBTAINABLE
);
781 case SSL_AD_UNRECOGNIZED_NAME
:
782 return (TLS1_AD_UNRECOGNIZED_NAME
);
783 case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE
:
784 return (TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
);
785 case SSL_AD_BAD_CERTIFICATE_HASH_VALUE
:
786 return (TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
);
787 case SSL_AD_UNKNOWN_PSK_IDENTITY
:
788 return (TLS1_AD_UNKNOWN_PSK_IDENTITY
);
789 case SSL_AD_INAPPROPRIATE_FALLBACK
:
790 return (TLS1_AD_INAPPROPRIATE_FALLBACK
);
791 case SSL_AD_NO_APPLICATION_PROTOCOL
:
792 return (TLS1_AD_NO_APPLICATION_PROTOCOL
);