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
, ctx_init
;
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_init(&ctx_init
);
175 EVP_MD_CTX_set_flags(&ctx_init
, 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_init
, NULL
, md
, NULL
, mac_key
))
181 if (!EVP_MD_CTX_copy_ex(&ctx
, &ctx_init
))
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
))
197 /* Reinit mac contexts */
198 if (!EVP_MD_CTX_copy_ex(&ctx
, &ctx_init
))
200 if (!EVP_DigestSignUpdate(&ctx
, A1
, A1_len
))
202 if (olen
> chunk
&& !EVP_MD_CTX_copy_ex(&ctx_tmp
, &ctx
))
204 if (seed1
&& !EVP_DigestSignUpdate(&ctx
, seed1
, seed1_len
))
206 if (seed2
&& !EVP_DigestSignUpdate(&ctx
, seed2
, seed2_len
))
208 if (seed3
&& !EVP_DigestSignUpdate(&ctx
, seed3
, seed3_len
))
210 if (seed4
&& !EVP_DigestSignUpdate(&ctx
, seed4
, seed4_len
))
212 if (seed5
&& !EVP_DigestSignUpdate(&ctx
, seed5
, seed5_len
))
216 if (!EVP_DigestSignFinal(&ctx
, out
, &j
))
220 /* calc the next A1 value */
221 if (!EVP_DigestSignFinal(&ctx_tmp
, A1
, &A1_len
))
223 } else { /* last one */
225 if (!EVP_DigestSignFinal(&ctx
, A1
, &A1_len
))
227 memcpy(out
, A1
, olen
);
233 EVP_PKEY_free(mac_key
);
234 EVP_MD_CTX_cleanup(&ctx
);
235 EVP_MD_CTX_cleanup(&ctx_tmp
);
236 EVP_MD_CTX_cleanup(&ctx_init
);
237 OPENSSL_cleanse(A1
, sizeof(A1
));
241 /* seed1 through seed5 are virtually concatenated */
242 static int tls1_PRF(long digest_mask
,
243 const void *seed1
, int seed1_len
,
244 const void *seed2
, int seed2_len
,
245 const void *seed3
, int seed3_len
,
246 const void *seed4
, int seed4_len
,
247 const void *seed5
, int seed5_len
,
248 const unsigned char *sec
, int slen
,
249 unsigned char *out1
, unsigned char *out2
, int olen
)
251 int len
, i
, idx
, count
;
252 const unsigned char *S1
;
257 /* Count number of digests and partition sec evenly */
259 for (idx
= 0; ssl_get_handshake_digest(idx
, &m
, &md
); idx
++) {
260 if ((m
<< TLS1_PRF_DGST_SHIFT
) & digest_mask
)
264 /* Should never happen */
265 SSLerr(SSL_F_TLS1_PRF
, ERR_R_INTERNAL_ERROR
);
272 memset(out1
, 0, olen
);
273 for (idx
= 0; ssl_get_handshake_digest(idx
, &m
, &md
); idx
++) {
274 if ((m
<< TLS1_PRF_DGST_SHIFT
) & digest_mask
) {
276 SSLerr(SSL_F_TLS1_PRF
, SSL_R_UNSUPPORTED_DIGEST_TYPE
);
279 if (!tls1_P_hash(md
, S1
, len
+ (slen
& 1),
280 seed1
, seed1_len
, seed2
, seed2_len
, seed3
,
281 seed3_len
, seed4
, seed4_len
, seed5
, seed5_len
,
285 for (i
= 0; i
< olen
; i
++) {
295 static int tls1_generate_key_block(SSL
*s
, unsigned char *km
,
296 unsigned char *tmp
, int num
)
299 ret
= tls1_PRF(ssl_get_algorithm2(s
),
300 TLS_MD_KEY_EXPANSION_CONST
,
301 TLS_MD_KEY_EXPANSION_CONST_SIZE
, s
->s3
->server_random
,
302 SSL3_RANDOM_SIZE
, s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
303 NULL
, 0, NULL
, 0, s
->session
->master_key
,
304 s
->session
->master_key_length
, km
, tmp
, num
);
306 fprintf(stderr
, "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
++) {
311 fprintf(stderr
, "%02X", s
->session
->master_key
[i
]);
313 fprintf(stderr
, "\n");
315 #endif /* KSSL_DEBUG */
319 int tls1_change_cipher_state(SSL
*s
, int which
)
321 static const unsigned char empty
[] = "";
322 unsigned char *p
, *mac_secret
;
323 unsigned char *exp_label
;
324 unsigned char tmp1
[EVP_MAX_KEY_LENGTH
];
325 unsigned char tmp2
[EVP_MAX_KEY_LENGTH
];
326 unsigned char iv1
[EVP_MAX_IV_LENGTH
* 2];
327 unsigned char iv2
[EVP_MAX_IV_LENGTH
* 2];
328 unsigned char *ms
, *key
, *iv
;
332 #ifndef OPENSSL_NO_COMP
333 const SSL_COMP
*comp
;
337 int *mac_secret_size
;
340 int is_export
, n
, i
, j
, k
, exp_label_len
, cl
;
343 is_export
= SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
);
344 c
= s
->s3
->tmp
.new_sym_enc
;
345 m
= s
->s3
->tmp
.new_hash
;
346 mac_type
= s
->s3
->tmp
.new_mac_pkey_type
;
347 #ifndef OPENSSL_NO_COMP
348 comp
= s
->s3
->tmp
.new_compression
;
352 fprintf(stderr
, "tls1_change_cipher_state(which= %d) w/\n", which
);
353 fprintf(stderr
, "\talg= %ld/%ld, comp= %p\n",
354 s
->s3
->tmp
.new_cipher
->algorithm_mkey
,
355 s
->s3
->tmp
.new_cipher
->algorithm_auth
, comp
);
356 fprintf(stderr
, "\tevp_cipher == %p ==? &d_cbc_ede_cipher3\n", c
);
357 fprintf(stderr
, "\tevp_cipher: nid, blksz= %d, %d, keylen=%d, ivlen=%d\n",
358 c
->nid
, c
->block_size
, c
->key_len
, c
->iv_len
);
359 fprintf(stderr
, "\tkey_block: len= %d, data= ",
360 s
->s3
->tmp
.key_block_length
);
363 for (i
= 0; i
< s
->s3
->tmp
.key_block_length
; i
++)
364 fprintf(stderr
, "%02x", s
->s3
->tmp
.key_block
[i
]);
365 fprintf(stderr
, "\n");
367 #endif /* KSSL_DEBUG */
369 if (which
& SSL3_CC_READ
) {
370 if (s
->s3
->tmp
.new_cipher
->algorithm2
& TLS1_STREAM_MAC
)
371 s
->mac_flags
|= SSL_MAC_FLAG_READ_MAC_STREAM
;
373 s
->mac_flags
&= ~SSL_MAC_FLAG_READ_MAC_STREAM
;
375 if (s
->enc_read_ctx
!= NULL
)
377 else if ((s
->enc_read_ctx
=
378 OPENSSL_malloc(sizeof(EVP_CIPHER_CTX
))) == NULL
)
382 * make sure it's intialized in case we exit later with an error
384 EVP_CIPHER_CTX_init(s
->enc_read_ctx
);
385 dd
= s
->enc_read_ctx
;
386 mac_ctx
= ssl_replace_hash(&s
->read_hash
, NULL
);
387 #ifndef OPENSSL_NO_COMP
388 if (s
->expand
!= NULL
) {
389 COMP_CTX_free(s
->expand
);
393 s
->expand
= COMP_CTX_new(comp
->method
);
394 if (s
->expand
== NULL
) {
395 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
,
396 SSL_R_COMPRESSION_LIBRARY_ERROR
);
399 if (!RECORD_LAYER_setup_comp_buffer(&s
->rlayer
))
404 * this is done by dtls1_reset_seq_numbers for DTLS
407 RECORD_LAYER_reset_read_sequence(&s
->rlayer
);
408 mac_secret
= &(s
->s3
->read_mac_secret
[0]);
409 mac_secret_size
= &(s
->s3
->read_mac_secret_size
);
411 if (s
->s3
->tmp
.new_cipher
->algorithm2
& TLS1_STREAM_MAC
)
412 s
->mac_flags
|= SSL_MAC_FLAG_WRITE_MAC_STREAM
;
414 s
->mac_flags
&= ~SSL_MAC_FLAG_WRITE_MAC_STREAM
;
415 if (s
->enc_write_ctx
!= NULL
&& !SSL_IS_DTLS(s
))
417 else if ((s
->enc_write_ctx
= EVP_CIPHER_CTX_new()) == NULL
)
419 dd
= s
->enc_write_ctx
;
420 if (SSL_IS_DTLS(s
)) {
421 mac_ctx
= EVP_MD_CTX_create();
424 s
->write_hash
= mac_ctx
;
426 mac_ctx
= ssl_replace_hash(&s
->write_hash
, NULL
);
427 #ifndef OPENSSL_NO_COMP
428 if (s
->compress
!= NULL
) {
429 COMP_CTX_free(s
->compress
);
433 s
->compress
= COMP_CTX_new(comp
->method
);
434 if (s
->compress
== NULL
) {
435 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
,
436 SSL_R_COMPRESSION_LIBRARY_ERROR
);
442 * this is done by dtls1_reset_seq_numbers for DTLS
445 RECORD_LAYER_reset_write_sequence(&s
->rlayer
);
446 mac_secret
= &(s
->s3
->write_mac_secret
[0]);
447 mac_secret_size
= &(s
->s3
->write_mac_secret_size
);
451 EVP_CIPHER_CTX_cleanup(dd
);
453 p
= s
->s3
->tmp
.key_block
;
454 i
= *mac_secret_size
= s
->s3
->tmp
.new_mac_secret_size
;
456 cl
= EVP_CIPHER_key_length(c
);
457 j
= is_export
? (cl
< SSL_C_EXPORT_KEYLENGTH(s
->s3
->tmp
.new_cipher
) ?
458 cl
: SSL_C_EXPORT_KEYLENGTH(s
->s3
->tmp
.new_cipher
)) : cl
;
459 /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
460 /* If GCM mode only part of IV comes from PRF */
461 if (EVP_CIPHER_mode(c
) == EVP_CIPH_GCM_MODE
)
462 k
= EVP_GCM_TLS_FIXED_IV_LEN
;
464 k
= EVP_CIPHER_iv_length(c
);
465 if ((which
== SSL3_CHANGE_CIPHER_CLIENT_WRITE
) ||
466 (which
== SSL3_CHANGE_CIPHER_SERVER_READ
)) {
473 exp_label
= (unsigned char *)TLS_MD_CLIENT_WRITE_KEY_CONST
;
474 exp_label_len
= TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE
;
484 exp_label
= (unsigned char *)TLS_MD_SERVER_WRITE_KEY_CONST
;
485 exp_label_len
= TLS_MD_SERVER_WRITE_KEY_CONST_SIZE
;
489 if (n
> s
->s3
->tmp
.key_block_length
) {
490 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
494 memcpy(mac_secret
, ms
, i
);
496 if (!(EVP_CIPHER_flags(c
) & EVP_CIPH_FLAG_AEAD_CIPHER
)) {
497 mac_key
= EVP_PKEY_new_mac_key(mac_type
, NULL
,
498 mac_secret
, *mac_secret_size
);
499 EVP_DigestSignInit(mac_ctx
, NULL
, m
, NULL
, mac_key
);
500 EVP_PKEY_free(mac_key
);
503 printf("which = %04X\nmac key=", which
);
506 for (z
= 0; z
< i
; z
++)
507 printf("%02X%c", ms
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
512 * In here I set both the read and write key/iv to the same value
513 * since only the correct one will be used :-).
515 if (!tls1_PRF(ssl_get_algorithm2(s
),
516 exp_label
, exp_label_len
,
517 s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
518 s
->s3
->server_random
, SSL3_RANDOM_SIZE
,
520 key
, j
, tmp1
, tmp2
, EVP_CIPHER_key_length(c
)))
525 if (!tls1_PRF(ssl_get_algorithm2(s
),
526 TLS_MD_IV_BLOCK_CONST
, TLS_MD_IV_BLOCK_CONST_SIZE
,
527 s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
528 s
->s3
->server_random
, SSL3_RANDOM_SIZE
,
529 NULL
, 0, NULL
, 0, empty
, 0, iv1
, iv2
, k
* 2))
540 fprintf(stderr
, "EVP_CipherInit_ex(dd,c,key=,iv=,which)\n");
541 fprintf(stderr
, "\tkey= ");
542 for (i
= 0; i
< c
->key_len
; i
++)
543 fprintf(stderr
, "%02x", key
[i
]);
544 fprintf(stderr
, "\n");
545 fprintf(stderr
, "\t iv= ");
546 for (i
= 0; i
< c
->iv_len
; i
++)
547 fprintf(stderr
, "%02x", iv
[i
]);
548 fprintf(stderr
, "\n");
550 #endif /* KSSL_DEBUG */
552 if (EVP_CIPHER_mode(c
) == EVP_CIPH_GCM_MODE
) {
553 if (!EVP_CipherInit_ex(dd
, c
, NULL
, key
, NULL
, (which
& SSL3_CC_WRITE
))
554 || !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_GCM_SET_IV_FIXED
, k
, iv
)) {
555 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
559 if (!EVP_CipherInit_ex(dd
, c
, NULL
, key
, iv
, (which
& SSL3_CC_WRITE
))) {
560 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
564 /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */
565 if ((EVP_CIPHER_flags(c
) & EVP_CIPH_FLAG_AEAD_CIPHER
) && *mac_secret_size
566 && !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_AEAD_SET_MAC_KEY
,
567 *mac_secret_size
, mac_secret
)) {
568 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
571 #ifdef OPENSSL_SSL_TRACE_CRYPTO
572 if (s
->msg_callback
) {
573 int wh
= which
& SSL3_CC_WRITE
? TLS1_RT_CRYPTO_WRITE
: 0;
574 if (*mac_secret_size
)
575 s
->msg_callback(2, s
->version
, wh
| TLS1_RT_CRYPTO_MAC
,
576 mac_secret
, *mac_secret_size
,
577 s
, s
->msg_callback_arg
);
579 s
->msg_callback(2, s
->version
, wh
| TLS1_RT_CRYPTO_KEY
,
580 key
, c
->key_len
, s
, s
->msg_callback_arg
);
582 if (EVP_CIPHER_mode(c
) == EVP_CIPH_GCM_MODE
)
583 wh
|= TLS1_RT_CRYPTO_FIXED_IV
;
585 wh
|= TLS1_RT_CRYPTO_IV
;
586 s
->msg_callback(2, s
->version
, wh
, iv
, k
, s
, s
->msg_callback_arg
);
592 printf("which = %04X\nkey=", which
);
595 for (z
= 0; z
< EVP_CIPHER_key_length(c
); z
++)
596 printf("%02X%c", key
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
601 for (z
= 0; z
< k
; z
++)
602 printf("%02X%c", iv
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
607 OPENSSL_cleanse(tmp1
, sizeof(tmp1
));
608 OPENSSL_cleanse(tmp2
, sizeof(tmp1
));
609 OPENSSL_cleanse(iv1
, sizeof(iv1
));
610 OPENSSL_cleanse(iv2
, sizeof(iv2
));
613 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_MALLOC_FAILURE
);
618 int tls1_setup_key_block(SSL
*s
)
620 unsigned char *p1
, *p2
= NULL
;
625 int mac_type
= NID_undef
, mac_secret_size
= 0;
629 fprintf(stderr
, "tls1_setup_key_block()\n");
630 #endif /* KSSL_DEBUG */
632 if (s
->s3
->tmp
.key_block_length
!= 0)
635 if (!ssl_cipher_get_evp
636 (s
->session
, &c
, &hash
, &mac_type
, &mac_secret_size
, &comp
,
638 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK
, SSL_R_CIPHER_OR_HASH_UNAVAILABLE
);
642 s
->s3
->tmp
.new_sym_enc
= c
;
643 s
->s3
->tmp
.new_hash
= hash
;
644 s
->s3
->tmp
.new_mac_pkey_type
= mac_type
;
645 s
->s3
->tmp
.new_mac_secret_size
= mac_secret_size
;
647 EVP_CIPHER_key_length(c
) + mac_secret_size
+ EVP_CIPHER_iv_length(c
);
650 ssl3_cleanup_key_block(s
);
652 if ((p1
= OPENSSL_malloc(num
)) == NULL
) {
653 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK
, ERR_R_MALLOC_FAILURE
);
657 s
->s3
->tmp
.key_block_length
= num
;
658 s
->s3
->tmp
.key_block
= p1
;
660 if ((p2
= OPENSSL_malloc(num
)) == NULL
) {
661 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK
, ERR_R_MALLOC_FAILURE
);
666 printf("client random\n");
669 for (z
= 0; z
< SSL3_RANDOM_SIZE
; z
++)
670 printf("%02X%c", s
->s3
->client_random
[z
],
671 ((z
+ 1) % 16) ? ' ' : '\n');
673 printf("server random\n");
676 for (z
= 0; z
< SSL3_RANDOM_SIZE
; z
++)
677 printf("%02X%c", s
->s3
->server_random
[z
],
678 ((z
+ 1) % 16) ? ' ' : '\n');
680 printf("master key\n");
683 for (z
= 0; z
< s
->session
->master_key_length
; z
++)
684 printf("%02X%c", s
->session
->master_key
[z
],
685 ((z
+ 1) % 16) ? ' ' : '\n');
688 if (!tls1_generate_key_block(s
, p1
, p2
, num
))
691 printf("\nkey block\n");
694 for (z
= 0; z
< num
; z
++)
695 printf("%02X%c", p1
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
699 if (!(s
->options
& SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
)
700 && s
->method
->version
<= TLS1_VERSION
) {
702 * enable vulnerability countermeasure for CBC ciphers with known-IV
703 * problem (http://www.openssl.org/~bodo/tls-cbc.txt)
705 s
->s3
->need_empty_fragments
= 1;
707 if (s
->session
->cipher
!= NULL
) {
708 if (s
->session
->cipher
->algorithm_enc
== SSL_eNULL
)
709 s
->s3
->need_empty_fragments
= 0;
711 #ifndef OPENSSL_NO_RC4
712 if (s
->session
->cipher
->algorithm_enc
== SSL_RC4
)
713 s
->s3
->need_empty_fragments
= 0;
721 OPENSSL_cleanse(p2
, num
);
728 int tls1_cert_verify_mac(SSL
*s
, int md_nid
, unsigned char *out
)
731 EVP_MD_CTX ctx
, *d
= NULL
;
734 if (s
->s3
->handshake_buffer
)
735 if (!ssl3_digest_cached_records(s
))
738 for (i
= 0; i
< SSL_MAX_DIGEST
; i
++) {
739 if (s
->s3
->handshake_dgst
[i
]
740 && EVP_MD_CTX_type(s
->s3
->handshake_dgst
[i
]) == md_nid
) {
741 d
= s
->s3
->handshake_dgst
[i
];
746 SSLerr(SSL_F_TLS1_CERT_VERIFY_MAC
, SSL_R_NO_REQUIRED_DIGEST
);
750 EVP_MD_CTX_init(&ctx
);
751 EVP_MD_CTX_copy_ex(&ctx
, d
);
752 EVP_DigestFinal_ex(&ctx
, out
, &ret
);
753 EVP_MD_CTX_cleanup(&ctx
);
757 int tls1_final_finish_mac(SSL
*s
, const char *str
, int slen
,
761 unsigned char hash
[2 * EVP_MAX_MD_SIZE
];
762 unsigned char buf2
[12];
764 if (s
->s3
->handshake_buffer
)
765 if (!ssl3_digest_cached_records(s
))
768 hashlen
= ssl_handshake_hash(s
, hash
, sizeof(hash
));
773 if (!tls1_PRF(ssl_get_algorithm2(s
),
774 str
, slen
, hash
, hashlen
, NULL
, 0, NULL
, 0, NULL
, 0,
775 s
->session
->master_key
, s
->session
->master_key_length
,
776 out
, buf2
, sizeof buf2
))
778 OPENSSL_cleanse(hash
, hashlen
);
779 OPENSSL_cleanse(buf2
, sizeof(buf2
));
783 int tls1_generate_master_secret(SSL
*s
, unsigned char *out
, unsigned char *p
,
786 unsigned char buff
[SSL_MAX_MASTER_KEY_LENGTH
];
789 fprintf(stderr
, "tls1_generate_master_secret(%p,%p, %p, %d)\n", s
, out
, p
,
791 #endif /* KSSL_DEBUG */
793 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
) {
794 unsigned char hash
[EVP_MAX_MD_SIZE
* 2];
796 /* If we don't have any digests cache records */
797 if (s
->s3
->handshake_buffer
) {
799 * keep record buffer: this wont affect client auth because we're
800 * freezing the buffer at the same point (after client key
801 * exchange and before certificate verify)
803 s
->s3
->flags
|= TLS1_FLAGS_KEEP_HANDSHAKE
;
804 if (!ssl3_digest_cached_records(s
))
807 hashlen
= ssl_handshake_hash(s
, hash
, sizeof(hash
));
809 fprintf(stderr
, "Handshake hashes:\n");
810 BIO_dump_fp(stderr
, (char *)hash
, hashlen
);
812 tls1_PRF(ssl_get_algorithm2(s
),
813 TLS_MD_EXTENDED_MASTER_SECRET_CONST
,
814 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE
,
818 NULL
, 0, p
, len
, s
->session
->master_key
, buff
, sizeof buff
);
819 OPENSSL_cleanse(hash
, hashlen
);
821 tls1_PRF(ssl_get_algorithm2(s
),
822 TLS_MD_MASTER_SECRET_CONST
,
823 TLS_MD_MASTER_SECRET_CONST_SIZE
,
824 s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
826 s
->s3
->server_random
, SSL3_RANDOM_SIZE
,
827 NULL
, 0, p
, len
, s
->session
->master_key
, buff
, sizeof buff
);
829 OPENSSL_cleanse(buff
, sizeof buff
);
831 fprintf(stderr
, "Premaster Secret:\n");
832 BIO_dump_fp(stderr
, (char *)p
, len
);
833 fprintf(stderr
, "Client Random:\n");
834 BIO_dump_fp(stderr
, (char *)s
->s3
->client_random
, SSL3_RANDOM_SIZE
);
835 fprintf(stderr
, "Server Random:\n");
836 BIO_dump_fp(stderr
, (char *)s
->s3
->server_random
, SSL3_RANDOM_SIZE
);
837 fprintf(stderr
, "Master Secret:\n");
838 BIO_dump_fp(stderr
, (char *)s
->session
->master_key
,
839 SSL3_MASTER_SECRET_SIZE
);
842 #ifdef OPENSSL_SSL_TRACE_CRYPTO
843 if (s
->msg_callback
) {
844 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_PREMASTER
,
845 p
, len
, s
, s
->msg_callback_arg
);
846 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_CLIENT_RANDOM
,
847 s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
848 s
, s
->msg_callback_arg
);
849 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_SERVER_RANDOM
,
850 s
->s3
->server_random
, SSL3_RANDOM_SIZE
,
851 s
, s
->msg_callback_arg
);
852 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_MASTER
,
853 s
->session
->master_key
,
854 SSL3_MASTER_SECRET_SIZE
, s
, s
->msg_callback_arg
);
859 fprintf(stderr
, "tls1_generate_master_secret() complete\n");
860 #endif /* KSSL_DEBUG */
861 return (SSL3_MASTER_SECRET_SIZE
);
864 int tls1_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
865 const char *label
, size_t llen
,
866 const unsigned char *context
,
867 size_t contextlen
, int use_context
)
870 unsigned char *val
= NULL
;
871 size_t vallen
, currentvalpos
;
875 fprintf(stderr
, "tls1_export_keying_material(%p,%p,%lu,%s,%lu,%p,%lu)\n",
876 s
, out
, olen
, label
, llen
, context
, contextlen
);
877 #endif /* KSSL_DEBUG */
879 buff
= OPENSSL_malloc(olen
);
884 * construct PRF arguments we construct the PRF argument ourself rather
885 * than passing separate values into the TLS PRF to ensure that the
886 * concatenation of values does not create a prohibited label.
888 vallen
= llen
+ SSL3_RANDOM_SIZE
* 2;
890 vallen
+= 2 + contextlen
;
893 val
= OPENSSL_malloc(vallen
);
897 memcpy(val
+ currentvalpos
, (unsigned char *)label
, llen
);
898 currentvalpos
+= llen
;
899 memcpy(val
+ currentvalpos
, s
->s3
->client_random
, SSL3_RANDOM_SIZE
);
900 currentvalpos
+= SSL3_RANDOM_SIZE
;
901 memcpy(val
+ currentvalpos
, s
->s3
->server_random
, SSL3_RANDOM_SIZE
);
902 currentvalpos
+= SSL3_RANDOM_SIZE
;
905 val
[currentvalpos
] = (contextlen
>> 8) & 0xff;
907 val
[currentvalpos
] = contextlen
& 0xff;
909 if ((contextlen
> 0) || (context
!= NULL
)) {
910 memcpy(val
+ currentvalpos
, context
, contextlen
);
915 * disallow prohibited labels note that SSL3_RANDOM_SIZE > max(prohibited
916 * label len) = 15, so size of val > max(prohibited label len) = 15 and
917 * the comparisons won't have buffer overflow
919 if (memcmp(val
, TLS_MD_CLIENT_FINISH_CONST
,
920 TLS_MD_CLIENT_FINISH_CONST_SIZE
) == 0)
922 if (memcmp(val
, TLS_MD_SERVER_FINISH_CONST
,
923 TLS_MD_SERVER_FINISH_CONST_SIZE
) == 0)
925 if (memcmp(val
, TLS_MD_MASTER_SECRET_CONST
,
926 TLS_MD_MASTER_SECRET_CONST_SIZE
) == 0)
928 if (memcmp(val
, TLS_MD_EXTENDED_MASTER_SECRET_CONST
,
929 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE
) == 0)
931 if (memcmp(val
, TLS_MD_KEY_EXPANSION_CONST
,
932 TLS_MD_KEY_EXPANSION_CONST_SIZE
) == 0)
935 rv
= tls1_PRF(ssl_get_algorithm2(s
),
941 s
->session
->master_key
, s
->session
->master_key_length
,
943 OPENSSL_cleanse(val
, vallen
);
944 OPENSSL_cleanse(buff
, olen
);
947 fprintf(stderr
, "tls1_export_keying_material() complete\n");
948 #endif /* KSSL_DEBUG */
951 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL
,
952 SSL_R_TLS_ILLEGAL_EXPORTER_LABEL
);
956 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL
, ERR_R_MALLOC_FAILURE
);
966 int tls1_alert_code(int code
)
969 case SSL_AD_CLOSE_NOTIFY
:
970 return (SSL3_AD_CLOSE_NOTIFY
);
971 case SSL_AD_UNEXPECTED_MESSAGE
:
972 return (SSL3_AD_UNEXPECTED_MESSAGE
);
973 case SSL_AD_BAD_RECORD_MAC
:
974 return (SSL3_AD_BAD_RECORD_MAC
);
975 case SSL_AD_DECRYPTION_FAILED
:
976 return (TLS1_AD_DECRYPTION_FAILED
);
977 case SSL_AD_RECORD_OVERFLOW
:
978 return (TLS1_AD_RECORD_OVERFLOW
);
979 case SSL_AD_DECOMPRESSION_FAILURE
:
980 return (SSL3_AD_DECOMPRESSION_FAILURE
);
981 case SSL_AD_HANDSHAKE_FAILURE
:
982 return (SSL3_AD_HANDSHAKE_FAILURE
);
983 case SSL_AD_NO_CERTIFICATE
:
985 case SSL_AD_BAD_CERTIFICATE
:
986 return (SSL3_AD_BAD_CERTIFICATE
);
987 case SSL_AD_UNSUPPORTED_CERTIFICATE
:
988 return (SSL3_AD_UNSUPPORTED_CERTIFICATE
);
989 case SSL_AD_CERTIFICATE_REVOKED
:
990 return (SSL3_AD_CERTIFICATE_REVOKED
);
991 case SSL_AD_CERTIFICATE_EXPIRED
:
992 return (SSL3_AD_CERTIFICATE_EXPIRED
);
993 case SSL_AD_CERTIFICATE_UNKNOWN
:
994 return (SSL3_AD_CERTIFICATE_UNKNOWN
);
995 case SSL_AD_ILLEGAL_PARAMETER
:
996 return (SSL3_AD_ILLEGAL_PARAMETER
);
997 case SSL_AD_UNKNOWN_CA
:
998 return (TLS1_AD_UNKNOWN_CA
);
999 case SSL_AD_ACCESS_DENIED
:
1000 return (TLS1_AD_ACCESS_DENIED
);
1001 case SSL_AD_DECODE_ERROR
:
1002 return (TLS1_AD_DECODE_ERROR
);
1003 case SSL_AD_DECRYPT_ERROR
:
1004 return (TLS1_AD_DECRYPT_ERROR
);
1005 case SSL_AD_EXPORT_RESTRICTION
:
1006 return (TLS1_AD_EXPORT_RESTRICTION
);
1007 case SSL_AD_PROTOCOL_VERSION
:
1008 return (TLS1_AD_PROTOCOL_VERSION
);
1009 case SSL_AD_INSUFFICIENT_SECURITY
:
1010 return (TLS1_AD_INSUFFICIENT_SECURITY
);
1011 case SSL_AD_INTERNAL_ERROR
:
1012 return (TLS1_AD_INTERNAL_ERROR
);
1013 case SSL_AD_USER_CANCELLED
:
1014 return (TLS1_AD_USER_CANCELLED
);
1015 case SSL_AD_NO_RENEGOTIATION
:
1016 return (TLS1_AD_NO_RENEGOTIATION
);
1017 case SSL_AD_UNSUPPORTED_EXTENSION
:
1018 return (TLS1_AD_UNSUPPORTED_EXTENSION
);
1019 case SSL_AD_CERTIFICATE_UNOBTAINABLE
:
1020 return (TLS1_AD_CERTIFICATE_UNOBTAINABLE
);
1021 case SSL_AD_UNRECOGNIZED_NAME
:
1022 return (TLS1_AD_UNRECOGNIZED_NAME
);
1023 case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE
:
1024 return (TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
);
1025 case SSL_AD_BAD_CERTIFICATE_HASH_VALUE
:
1026 return (TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
);
1027 case SSL_AD_UNKNOWN_PSK_IDENTITY
:
1028 return (TLS1_AD_UNKNOWN_PSK_IDENTITY
);
1029 case SSL_AD_INAPPROPRIATE_FALLBACK
:
1030 return (TLS1_AD_INAPPROPRIATE_FALLBACK
);