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 #include <openssl/evp.h>
141 #include <openssl/md5.h>
143 static unsigned char ssl3_pad_1
[48]={
144 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
145 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
146 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
147 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
148 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
149 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36 };
151 static unsigned char ssl3_pad_2
[48]={
152 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
153 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
154 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
155 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
156 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
157 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c };
158 static int ssl3_handshake_mac(SSL
*s
, int md_nid
,
159 const char *sender
, int len
, unsigned char *p
);
160 static int ssl3_generate_key_block(SSL
*s
, unsigned char *km
, int num
)
164 unsigned char buf
[16],smd
[SHA_DIGEST_LENGTH
];
168 #ifdef CHARSET_EBCDIC
169 c
= os_toascii
[c
]; /*'A' in ASCII */
172 EVP_MD_CTX_init(&m5
);
173 EVP_MD_CTX_init(&s1
);
174 for (i
=0; (int)i
<num
; i
+=MD5_DIGEST_LENGTH
)
179 /* bug: 'buf' is too small for this ciphersuite */
180 SSLerr(SSL_F_SSL3_GENERATE_KEY_BLOCK
, ERR_R_INTERNAL_ERROR
);
187 EVP_DigestInit_ex(&s1
,EVP_sha1(), NULL
);
188 EVP_DigestUpdate(&s1
,buf
,k
);
189 EVP_DigestUpdate(&s1
,s
->session
->master_key
,
190 s
->session
->master_key_length
);
191 EVP_DigestUpdate(&s1
,s
->s3
->server_random
,SSL3_RANDOM_SIZE
);
192 EVP_DigestUpdate(&s1
,s
->s3
->client_random
,SSL3_RANDOM_SIZE
);
193 EVP_DigestFinal_ex(&s1
,smd
,NULL
);
195 EVP_DigestInit_ex(&m5
,EVP_md5(), NULL
);
196 EVP_DigestUpdate(&m5
,s
->session
->master_key
,
197 s
->session
->master_key_length
);
198 EVP_DigestUpdate(&m5
,smd
,SHA_DIGEST_LENGTH
);
199 if ((int)(i
+MD5_DIGEST_LENGTH
) > num
)
201 EVP_DigestFinal_ex(&m5
,smd
,NULL
);
202 memcpy(km
,smd
,(num
-i
));
205 EVP_DigestFinal_ex(&m5
,km
,NULL
);
207 km
+=MD5_DIGEST_LENGTH
;
209 OPENSSL_cleanse(smd
,SHA_DIGEST_LENGTH
);
210 EVP_MD_CTX_cleanup(&m5
);
211 EVP_MD_CTX_cleanup(&s1
);
215 int ssl3_change_cipher_state(SSL
*s
, int which
)
217 unsigned char *p
,*mac_secret
;
218 unsigned char exp_key
[EVP_MAX_KEY_LENGTH
];
219 unsigned char exp_iv
[EVP_MAX_IV_LENGTH
];
220 unsigned char *ms
,*key
,*iv
,*er1
,*er2
;
223 #ifndef OPENSSL_NO_COMP
228 int is_exp
,n
,i
,j
,k
,cl
;
231 is_exp
=SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
);
232 c
=s
->s3
->tmp
.new_sym_enc
;
233 m
=s
->s3
->tmp
.new_hash
;
234 /* m == NULL will lead to a crash later */
236 #ifndef OPENSSL_NO_COMP
237 if (s
->s3
->tmp
.new_compression
== NULL
)
240 comp
=s
->s3
->tmp
.new_compression
->method
;
243 if (which
& SSL3_CC_READ
)
245 if (s
->enc_read_ctx
!= NULL
)
247 else if ((s
->enc_read_ctx
=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX
))) == NULL
)
250 /* make sure it's intialized in case we exit later with an error */
251 EVP_CIPHER_CTX_init(s
->enc_read_ctx
);
254 ssl_replace_hash(&s
->read_hash
,m
);
255 #ifndef OPENSSL_NO_COMP
257 if (s
->expand
!= NULL
)
259 COMP_CTX_free(s
->expand
);
264 s
->expand
=COMP_CTX_new(comp
);
265 if (s
->expand
== NULL
)
267 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE
,SSL_R_COMPRESSION_LIBRARY_ERROR
);
270 if (s
->s3
->rrec
.comp
== NULL
)
271 s
->s3
->rrec
.comp
=(unsigned char *)
272 OPENSSL_malloc(SSL3_RT_MAX_PLAIN_LENGTH
);
273 if (s
->s3
->rrec
.comp
== NULL
)
277 memset(&(s
->s3
->read_sequence
[0]),0,8);
278 mac_secret
= &(s
->s3
->read_mac_secret
[0]);
282 if (s
->enc_write_ctx
!= NULL
)
284 else if ((s
->enc_write_ctx
=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX
))) == NULL
)
287 /* make sure it's intialized in case we exit later with an error */
288 EVP_CIPHER_CTX_init(s
->enc_write_ctx
);
289 dd
= s
->enc_write_ctx
;
290 ssl_replace_hash(&s
->write_hash
,m
);
291 #ifndef OPENSSL_NO_COMP
293 if (s
->compress
!= NULL
)
295 COMP_CTX_free(s
->compress
);
300 s
->compress
=COMP_CTX_new(comp
);
301 if (s
->compress
== NULL
)
303 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE
,SSL_R_COMPRESSION_LIBRARY_ERROR
);
308 memset(&(s
->s3
->write_sequence
[0]),0,8);
309 mac_secret
= &(s
->s3
->write_mac_secret
[0]);
313 EVP_CIPHER_CTX_cleanup(dd
);
315 p
=s
->s3
->tmp
.key_block
;
319 cl
=EVP_CIPHER_key_length(c
);
320 j
=is_exp
? (cl
< SSL_C_EXPORT_KEYLENGTH(s
->s3
->tmp
.new_cipher
) ?
321 cl
: SSL_C_EXPORT_KEYLENGTH(s
->s3
->tmp
.new_cipher
)) : cl
;
322 /* Was j=(is_exp)?5:EVP_CIPHER_key_length(c); */
323 k
=EVP_CIPHER_iv_length(c
);
324 if ( (which
== SSL3_CHANGE_CIPHER_CLIENT_WRITE
) ||
325 (which
== SSL3_CHANGE_CIPHER_SERVER_READ
))
328 key
= &(p
[ n
]); n
+=j
+j
;
329 iv
= &(p
[ n
]); n
+=k
+k
;
330 er1
= &(s
->s3
->client_random
[0]);
331 er2
= &(s
->s3
->server_random
[0]);
336 ms
= &(p
[ n
]); n
+=i
+j
;
337 key
= &(p
[ n
]); n
+=j
+k
;
339 er1
= &(s
->s3
->server_random
[0]);
340 er2
= &(s
->s3
->client_random
[0]);
343 if (n
> s
->s3
->tmp
.key_block_length
)
345 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE
,ERR_R_INTERNAL_ERROR
);
349 EVP_MD_CTX_init(&md
);
350 memcpy(mac_secret
,ms
,i
);
353 /* In here I set both the read and write key/iv to the
354 * same value since only the correct one will be used :-).
356 EVP_DigestInit_ex(&md
,EVP_md5(), NULL
);
357 EVP_DigestUpdate(&md
,key
,j
);
358 EVP_DigestUpdate(&md
,er1
,SSL3_RANDOM_SIZE
);
359 EVP_DigestUpdate(&md
,er2
,SSL3_RANDOM_SIZE
);
360 EVP_DigestFinal_ex(&md
,&(exp_key
[0]),NULL
);
365 EVP_DigestInit_ex(&md
,EVP_md5(), NULL
);
366 EVP_DigestUpdate(&md
,er1
,SSL3_RANDOM_SIZE
);
367 EVP_DigestUpdate(&md
,er2
,SSL3_RANDOM_SIZE
);
368 EVP_DigestFinal_ex(&md
,&(exp_iv
[0]),NULL
);
373 s
->session
->key_arg_length
=0;
375 EVP_CipherInit_ex(dd
,c
,NULL
,key
,iv
,(which
& SSL3_CC_WRITE
));
377 OPENSSL_cleanse(&(exp_key
[0]),sizeof(exp_key
));
378 OPENSSL_cleanse(&(exp_iv
[0]),sizeof(exp_iv
));
379 EVP_MD_CTX_cleanup(&md
);
382 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE
,ERR_R_MALLOC_FAILURE
);
387 int ssl3_setup_key_block(SSL
*s
)
396 if (s
->s3
->tmp
.key_block_length
!= 0)
399 if (!ssl_cipher_get_evp(s
->session
,&c
,&hash
,NULL
,NULL
,&comp
))
401 SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK
,SSL_R_CIPHER_OR_HASH_UNAVAILABLE
);
405 s
->s3
->tmp
.new_sym_enc
=c
;
406 s
->s3
->tmp
.new_hash
=hash
;
407 #ifdef OPENSSL_NO_COMP
408 s
->s3
->tmp
.new_compression
=NULL
;
410 s
->s3
->tmp
.new_compression
=comp
;
413 num
=EVP_MD_size(hash
);
417 num
=EVP_CIPHER_key_length(c
)+num
+EVP_CIPHER_iv_length(c
);
420 ssl3_cleanup_key_block(s
);
422 if ((p
=OPENSSL_malloc(num
)) == NULL
)
425 s
->s3
->tmp
.key_block_length
=num
;
426 s
->s3
->tmp
.key_block
=p
;
428 ret
= ssl3_generate_key_block(s
,p
,num
);
430 if (!(s
->options
& SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
))
432 /* enable vulnerability countermeasure for CBC ciphers with
433 * known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt)
435 s
->s3
->need_empty_fragments
= 1;
437 if (s
->session
->cipher
!= NULL
)
439 if (s
->session
->cipher
->algorithm_enc
== SSL_eNULL
)
440 s
->s3
->need_empty_fragments
= 0;
442 #ifndef OPENSSL_NO_RC4
443 if (s
->session
->cipher
->algorithm_enc
== SSL_RC4
)
444 s
->s3
->need_empty_fragments
= 0;
452 SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK
,ERR_R_MALLOC_FAILURE
);
456 void ssl3_cleanup_key_block(SSL
*s
)
458 if (s
->s3
->tmp
.key_block
!= NULL
)
460 OPENSSL_cleanse(s
->s3
->tmp
.key_block
,
461 s
->s3
->tmp
.key_block_length
);
462 OPENSSL_free(s
->s3
->tmp
.key_block
);
463 s
->s3
->tmp
.key_block
=NULL
;
465 s
->s3
->tmp
.key_block_length
=0;
468 int ssl3_enc(SSL
*s
, int send
)
474 const EVP_CIPHER
*enc
;
480 if (s
->enc_write_ctx
== NULL
)
483 enc
=EVP_CIPHER_CTX_cipher(s
->enc_write_ctx
);
489 if (s
->enc_read_ctx
== NULL
)
492 enc
=EVP_CIPHER_CTX_cipher(s
->enc_read_ctx
);
495 if ((s
->session
== NULL
) || (ds
== NULL
) ||
498 memmove(rec
->data
,rec
->input
,rec
->length
);
499 rec
->input
=rec
->data
;
504 bs
=EVP_CIPHER_block_size(ds
->cipher
);
508 if ((bs
!= 1) && send
)
512 /* we need to add 'i-1' padding bytes */
515 rec
->input
[l
-1]=(i
-1);
520 if (l
== 0 || l
%bs
!= 0)
522 SSLerr(SSL_F_SSL3_ENC
,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG
);
523 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECRYPTION_FAILED
);
526 /* otherwise, rec->length >= bs */
529 EVP_Cipher(ds
,rec
->data
,rec
->input
,l
);
531 if ((bs
!= 1) && !send
)
534 /* SSL 3.0 bounds the number of padding bytes by the block size;
535 * padding bytes (except the last one) are arbitrary */
538 /* Incorrect padding. SSLerr() and ssl3_alert are done
539 * by caller: we don't want to reveal whether this is
540 * a decryption error or a MAC verification failure
541 * (see http://www.openssl.org/~bodo/tls-cbc.txt) */
544 /* now i <= bs <= rec->length */
551 void ssl3_init_finished_mac(SSL
*s
)
553 if (s
->s3
->handshake_buffer
) BIO_free(s
->s3
->handshake_buffer
);
554 if (s
->s3
->handshake_dgst
) ssl3_free_digest_list(s
);
555 s
->s3
->handshake_buffer
=BIO_new(BIO_s_mem());
556 (void)BIO_set_close(s
->s3
->handshake_buffer
,BIO_CLOSE
);
559 void ssl3_free_digest_list(SSL
*s
)
562 if (!s
->s3
->handshake_dgst
) return;
563 for (i
=0;i
<SSL_MAX_DIGEST
;i
++)
565 if (s
->s3
->handshake_dgst
[i
])
566 EVP_MD_CTX_destroy(s
->s3
->handshake_dgst
[i
]);
568 OPENSSL_free(s
->s3
->handshake_dgst
);
569 s
->s3
->handshake_dgst
=NULL
;
574 void ssl3_finish_mac(SSL
*s
, const unsigned char *buf
, int len
)
576 if (s
->s3
->handshake_buffer
)
578 BIO_write (s
->s3
->handshake_buffer
,(void *)buf
,len
);
583 for (i
=0;i
< SSL_MAX_DIGEST
;i
++)
585 if (s
->s3
->handshake_dgst
[i
]!= NULL
)
586 EVP_DigestUpdate(s
->s3
->handshake_dgst
[i
],buf
,len
);
591 int ssl3_digest_cached_records(SSL
*s
)
599 /* Allocate handshake_dgst array */
600 ssl3_free_digest_list(s
);
601 s
->s3
->handshake_dgst
= OPENSSL_malloc(SSL_MAX_DIGEST
* sizeof(EVP_MD_CTX
*));
602 memset(s
->s3
->handshake_dgst
,0,SSL_MAX_DIGEST
*sizeof(EVP_MD_CTX
*));
603 hdatalen
= BIO_get_mem_data(s
->s3
->handshake_buffer
,&hdata
);
606 SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS
, SSL_R_BAD_HANDSHAKE_LENGTH
);
610 /* Loop through bitso of algorithm2 field and create MD_CTX-es */
611 for (i
=0;ssl_get_handshake_digest(i
,&mask
,&md
); i
++)
613 if ((mask
& s
->s3
->tmp
.new_cipher
->algorithm2
) && md
)
615 s
->s3
->handshake_dgst
[i
]=EVP_MD_CTX_create();
616 EVP_DigestInit_ex(s
->s3
->handshake_dgst
[i
],md
,NULL
);
617 EVP_DigestUpdate(s
->s3
->handshake_dgst
[i
],hdata
,hdatalen
);
621 s
->s3
->handshake_dgst
[i
]=NULL
;
624 /* Free handshake_buffer BIO */
625 BIO_free(s
->s3
->handshake_buffer
);
626 s
->s3
->handshake_buffer
= NULL
;
631 int ssl3_cert_verify_mac(SSL
*s
, int md_nid
, unsigned char *p
)
633 return(ssl3_handshake_mac(s
,md_nid
,NULL
,0,p
));
635 int ssl3_final_finish_mac(SSL
*s
,
636 const char *sender
, int len
, unsigned char *p
)
639 ret
=ssl3_handshake_mac(s
,NID_md5
,sender
,len
,p
);
641 ret
+=ssl3_handshake_mac(s
,NID_sha1
,sender
,len
,p
);
644 static int ssl3_handshake_mac(SSL
*s
, int md_nid
,
645 const char *sender
, int len
, unsigned char *p
)
650 unsigned char md_buf
[EVP_MAX_MD_SIZE
];
651 EVP_MD_CTX ctx
,*d
=NULL
;
653 if (s
->s3
->handshake_buffer
)
654 if (!ssl3_digest_cached_records(s
))
657 /* Search for digest of specified type in the handshake_dgst
659 for (i
=0;i
<SSL_MAX_DIGEST
;i
++)
661 if (s
->s3
->handshake_dgst
[i
]&&EVP_MD_CTX_type(s
->s3
->handshake_dgst
[i
])==md_nid
)
663 d
=s
->s3
->handshake_dgst
[i
];
668 SSLerr(SSL_F_SSL3_HANDSHAKE_MAC
,SSL_R_NO_REQUIRED_DIGEST
);
671 EVP_MD_CTX_init(&ctx
);
672 EVP_MD_CTX_copy_ex(&ctx
,d
);
673 n
=EVP_MD_CTX_size(&ctx
);
679 EVP_DigestUpdate(&ctx
,sender
,len
);
680 EVP_DigestUpdate(&ctx
,s
->session
->master_key
,
681 s
->session
->master_key_length
);
682 EVP_DigestUpdate(&ctx
,ssl3_pad_1
,npad
);
683 EVP_DigestFinal_ex(&ctx
,md_buf
,&i
);
685 EVP_DigestInit_ex(&ctx
,EVP_MD_CTX_md(&ctx
), NULL
);
686 EVP_DigestUpdate(&ctx
,s
->session
->master_key
,
687 s
->session
->master_key_length
);
688 EVP_DigestUpdate(&ctx
,ssl3_pad_2
,npad
);
689 EVP_DigestUpdate(&ctx
,md_buf
,i
);
690 EVP_DigestFinal_ex(&ctx
,p
,&ret
);
692 EVP_MD_CTX_cleanup(&ctx
);
697 int n_ssl3_mac(SSL
*ssl
, unsigned char *md
, int send
)
700 unsigned char *mac_sec
,*seq
;
702 const EVP_MD_CTX
*hash
;
703 unsigned char *p
,rec_char
;
704 unsigned int md_size
;
710 rec
= &(ssl
->s3
->wrec
);
711 mac_sec
= &(ssl
->s3
->write_mac_secret
[0]);
712 seq
= &(ssl
->s3
->write_sequence
[0]);
713 hash
=ssl
->write_hash
;
717 rec
= &(ssl
->s3
->rrec
);
718 mac_sec
= &(ssl
->s3
->read_mac_secret
[0]);
719 seq
= &(ssl
->s3
->read_sequence
[0]);
723 t
=EVP_MD_CTX_size(hash
);
727 npad
=(48/md_size
)*md_size
;
729 /* Chop the digest off the end :-) */
730 EVP_MD_CTX_init(&md_ctx
);
732 EVP_MD_CTX_copy_ex( &md_ctx
,hash
);
733 EVP_DigestUpdate(&md_ctx
,mac_sec
,md_size
);
734 EVP_DigestUpdate(&md_ctx
,ssl3_pad_1
,npad
);
735 EVP_DigestUpdate(&md_ctx
,seq
,8);
737 EVP_DigestUpdate(&md_ctx
,&rec_char
,1);
740 EVP_DigestUpdate(&md_ctx
,md
,2);
741 EVP_DigestUpdate(&md_ctx
,rec
->input
,rec
->length
);
742 EVP_DigestFinal_ex( &md_ctx
,md
,NULL
);
744 EVP_MD_CTX_copy_ex( &md_ctx
,hash
);
745 EVP_DigestUpdate(&md_ctx
,mac_sec
,md_size
);
746 EVP_DigestUpdate(&md_ctx
,ssl3_pad_2
,npad
);
747 EVP_DigestUpdate(&md_ctx
,md
,md_size
);
748 EVP_DigestFinal_ex( &md_ctx
,md
,&md_size
);
750 EVP_MD_CTX_cleanup(&md_ctx
);
752 ssl3_record_sequence_update(seq
);
756 void ssl3_record_sequence_update(unsigned char *seq
)
763 if (seq
[i
] != 0) break;
767 int ssl3_generate_master_secret(SSL
*s
, unsigned char *out
, unsigned char *p
,
770 static const unsigned char *salt
[3]={
771 #ifndef CHARSET_EBCDIC
772 (const unsigned char *)"A",
773 (const unsigned char *)"BB",
774 (const unsigned char *)"CCC",
776 (const unsigned char *)"\x41",
777 (const unsigned char *)"\x42\x42",
778 (const unsigned char *)"\x43\x43\x43",
781 unsigned char buf
[EVP_MAX_MD_SIZE
];
786 EVP_MD_CTX_init(&ctx
);
789 EVP_DigestInit_ex(&ctx
,s
->ctx
->sha1
, NULL
);
790 EVP_DigestUpdate(&ctx
,salt
[i
],strlen((const char *)salt
[i
]));
791 EVP_DigestUpdate(&ctx
,p
,len
);
792 EVP_DigestUpdate(&ctx
,&(s
->s3
->client_random
[0]),
794 EVP_DigestUpdate(&ctx
,&(s
->s3
->server_random
[0]),
796 EVP_DigestFinal_ex(&ctx
,buf
,&n
);
798 EVP_DigestInit_ex(&ctx
,s
->ctx
->md5
, NULL
);
799 EVP_DigestUpdate(&ctx
,p
,len
);
800 EVP_DigestUpdate(&ctx
,buf
,n
);
801 EVP_DigestFinal_ex(&ctx
,out
,&n
);
805 EVP_MD_CTX_cleanup(&ctx
);
809 int ssl3_alert_code(int code
)
813 case SSL_AD_CLOSE_NOTIFY
: return(SSL3_AD_CLOSE_NOTIFY
);
814 case SSL_AD_UNEXPECTED_MESSAGE
: return(SSL3_AD_UNEXPECTED_MESSAGE
);
815 case SSL_AD_BAD_RECORD_MAC
: return(SSL3_AD_BAD_RECORD_MAC
);
816 case SSL_AD_DECRYPTION_FAILED
: return(SSL3_AD_BAD_RECORD_MAC
);
817 case SSL_AD_RECORD_OVERFLOW
: return(SSL3_AD_BAD_RECORD_MAC
);
818 case SSL_AD_DECOMPRESSION_FAILURE
:return(SSL3_AD_DECOMPRESSION_FAILURE
);
819 case SSL_AD_HANDSHAKE_FAILURE
: return(SSL3_AD_HANDSHAKE_FAILURE
);
820 case SSL_AD_NO_CERTIFICATE
: return(SSL3_AD_NO_CERTIFICATE
);
821 case SSL_AD_BAD_CERTIFICATE
: return(SSL3_AD_BAD_CERTIFICATE
);
822 case SSL_AD_UNSUPPORTED_CERTIFICATE
:return(SSL3_AD_UNSUPPORTED_CERTIFICATE
);
823 case SSL_AD_CERTIFICATE_REVOKED
:return(SSL3_AD_CERTIFICATE_REVOKED
);
824 case SSL_AD_CERTIFICATE_EXPIRED
:return(SSL3_AD_CERTIFICATE_EXPIRED
);
825 case SSL_AD_CERTIFICATE_UNKNOWN
:return(SSL3_AD_CERTIFICATE_UNKNOWN
);
826 case SSL_AD_ILLEGAL_PARAMETER
: return(SSL3_AD_ILLEGAL_PARAMETER
);
827 case SSL_AD_UNKNOWN_CA
: return(SSL3_AD_BAD_CERTIFICATE
);
828 case SSL_AD_ACCESS_DENIED
: return(SSL3_AD_HANDSHAKE_FAILURE
);
829 case SSL_AD_DECODE_ERROR
: return(SSL3_AD_HANDSHAKE_FAILURE
);
830 case SSL_AD_DECRYPT_ERROR
: return(SSL3_AD_HANDSHAKE_FAILURE
);
831 case SSL_AD_EXPORT_RESTRICTION
: return(SSL3_AD_HANDSHAKE_FAILURE
);
832 case SSL_AD_PROTOCOL_VERSION
: return(SSL3_AD_HANDSHAKE_FAILURE
);
833 case SSL_AD_INSUFFICIENT_SECURITY
:return(SSL3_AD_HANDSHAKE_FAILURE
);
834 case SSL_AD_INTERNAL_ERROR
: return(SSL3_AD_HANDSHAKE_FAILURE
);
835 case SSL_AD_USER_CANCELLED
: return(SSL3_AD_HANDSHAKE_FAILURE
);
836 case SSL_AD_NO_RENEGOTIATION
: return(-1); /* Don't send it :-) */
837 case SSL_AD_UNSUPPORTED_EXTENSION
: return(SSL3_AD_HANDSHAKE_FAILURE
);
838 case SSL_AD_CERTIFICATE_UNOBTAINABLE
: return(SSL3_AD_HANDSHAKE_FAILURE
);
839 case SSL_AD_UNRECOGNIZED_NAME
: return(SSL3_AD_HANDSHAKE_FAILURE
);
840 case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE
: return(SSL3_AD_HANDSHAKE_FAILURE
);
841 case SSL_AD_BAD_CERTIFICATE_HASH_VALUE
: return(SSL3_AD_HANDSHAKE_FAILURE
);
842 case SSL_AD_UNKNOWN_PSK_IDENTITY
:return(TLS1_AD_UNKNOWN_PSK_IDENTITY
);