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1 | /* ssl/s3_enc.c */ | |
2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
3 | * All rights reserved. | |
4 | * | |
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. | |
8 | * | |
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). | |
15 | * | |
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. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
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)" | |
40 | * | |
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 | |
51 | * SUCH DAMAGE. | |
52 | * | |
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.] | |
57 | */ | |
58 | ||
59 | #include <stdio.h> | |
60 | #include "evp.h" | |
61 | #include "ssl_locl.h" | |
62 | ||
63 | static unsigned char ssl3_pad_1[48]={ | |
64 | 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36, | |
65 | 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36, | |
66 | 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36, | |
67 | 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36, | |
68 | 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36, | |
69 | 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36 }; | |
70 | ||
71 | static unsigned char ssl3_pad_2[48]={ | |
72 | 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c, | |
73 | 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c, | |
74 | 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c, | |
75 | 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c, | |
76 | 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c, | |
77 | 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c }; | |
78 | ||
79 | #ifndef NO_PROTO | |
80 | static int ssl3_handshake_mac(SSL *s, EVP_MD_CTX *in_ctx, | |
81 | unsigned char *sender, int len, unsigned char *p); | |
82 | #else | |
83 | static int ssl3_handshake_mac(); | |
84 | #endif | |
85 | ||
86 | static void ssl3_generate_key_block(s,km,num) | |
87 | SSL *s; | |
88 | unsigned char *km; | |
89 | int num; | |
90 | { | |
91 | MD5_CTX m5; | |
92 | SHA_CTX s1; | |
93 | unsigned char buf[8],smd[SHA_DIGEST_LENGTH]; | |
94 | unsigned char c='A'; | |
95 | int i,j,k; | |
96 | ||
97 | k=0; | |
98 | for (i=0; i<num; i+=MD5_DIGEST_LENGTH) | |
99 | { | |
100 | k++; | |
101 | for (j=0; j<k; j++) | |
102 | buf[j]=c; | |
103 | c++; | |
104 | SHA1_Init( &s1); | |
105 | SHA1_Update(&s1,buf,k); | |
106 | SHA1_Update(&s1,s->session->master_key, | |
107 | s->session->master_key_length); | |
108 | SHA1_Update(&s1,s->s3->server_random,SSL3_RANDOM_SIZE); | |
109 | SHA1_Update(&s1,s->s3->client_random,SSL3_RANDOM_SIZE); | |
110 | SHA1_Final( smd,&s1); | |
111 | ||
112 | MD5_Init( &m5); | |
113 | MD5_Update(&m5,s->session->master_key, | |
114 | s->session->master_key_length); | |
115 | MD5_Update(&m5,smd,SHA_DIGEST_LENGTH); | |
116 | if ((i+MD5_DIGEST_LENGTH) > num) | |
117 | { | |
118 | MD5_Final(smd,&m5); | |
119 | memcpy(km,smd,(num-i)); | |
120 | } | |
121 | else | |
122 | MD5_Final(km,&m5); | |
123 | ||
124 | km+=MD5_DIGEST_LENGTH; | |
125 | } | |
126 | memset(smd,0,SHA_DIGEST_LENGTH); | |
127 | } | |
128 | ||
129 | int ssl3_change_cipher_state(s,which) | |
130 | SSL *s; | |
131 | int which; | |
132 | { | |
133 | unsigned char *p,*key_block,*mac_secret; | |
134 | unsigned char exp_key[EVP_MAX_KEY_LENGTH]; | |
135 | unsigned char exp_iv[EVP_MAX_KEY_LENGTH]; | |
136 | unsigned char *ms,*key,*iv,*er1,*er2; | |
137 | EVP_CIPHER_CTX *dd; | |
138 | EVP_CIPHER *c; | |
139 | SSL_COMPRESSION *comp; | |
140 | EVP_MD *m; | |
141 | MD5_CTX md; | |
142 | int exp,n,i,j,k; | |
143 | ||
144 | exp=(s->s3->tmp.new_cipher->algorithms & SSL_EXPORT)?1:0; | |
145 | c=s->s3->tmp.new_sym_enc; | |
146 | m=s->s3->tmp.new_hash; | |
147 | comp=s->s3->tmp.new_compression; | |
148 | key_block=s->s3->tmp.key_block; | |
149 | ||
150 | if (which & SSL3_CC_READ) | |
151 | { | |
152 | if ((s->enc_read_ctx == NULL) && | |
153 | ((s->enc_read_ctx=(EVP_CIPHER_CTX *) | |
154 | Malloc(sizeof(EVP_CIPHER_CTX))) == NULL)) | |
155 | goto err; | |
156 | dd= s->enc_read_ctx; | |
157 | s->read_hash=m; | |
158 | s->read_compression=comp; | |
159 | memset(&(s->s3->read_sequence[0]),0,8); | |
160 | mac_secret= &(s->s3->read_mac_secret[0]); | |
161 | } | |
162 | else | |
163 | { | |
164 | if ((s->enc_write_ctx == NULL) && | |
165 | ((s->enc_write_ctx=(EVP_CIPHER_CTX *) | |
166 | Malloc(sizeof(EVP_CIPHER_CTX))) == NULL)) | |
167 | goto err; | |
168 | dd= s->enc_write_ctx; | |
169 | s->write_hash=m; | |
170 | s->write_compression=comp; | |
171 | memset(&(s->s3->write_sequence[0]),0,8); | |
172 | mac_secret= &(s->s3->write_mac_secret[0]); | |
173 | } | |
174 | ||
175 | EVP_CIPHER_CTX_init(dd); | |
176 | ||
177 | p=s->s3->tmp.key_block; | |
178 | i=EVP_MD_size(m); | |
179 | j=(exp)?5:EVP_CIPHER_key_length(c); | |
180 | k=EVP_CIPHER_iv_length(c); | |
181 | if ( (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) || | |
182 | (which == SSL3_CHANGE_CIPHER_SERVER_READ)) | |
183 | { | |
184 | ms= &(p[ 0]); n=i+i; | |
185 | key= &(p[ n]); n+=j+j; | |
186 | iv= &(p[ n]); n+=k+k; | |
187 | er1= &(s->s3->client_random[0]); | |
188 | er2= &(s->s3->server_random[0]); | |
189 | } | |
190 | else | |
191 | { | |
192 | n=i; | |
193 | ms= &(p[ n]); n+=i+j; | |
194 | key= &(p[ n]); n+=j+k; | |
195 | iv= &(p[ n]); n+=k; | |
196 | er1= &(s->s3->server_random[0]); | |
197 | er2= &(s->s3->client_random[0]); | |
198 | } | |
199 | ||
200 | if (n > s->s3->tmp.key_block_length) | |
201 | { | |
202 | SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,SSL_R_INTERNAL_ERROR); | |
203 | goto err2; | |
204 | } | |
205 | ||
206 | memcpy(mac_secret,ms,i); | |
207 | if (exp) | |
208 | { | |
209 | /* In here I set both the read and write key/iv to the | |
210 | * same value since only the correct one will be used :-). | |
211 | */ | |
212 | MD5_Init(&md); | |
213 | MD5_Update(&md,key,j); | |
214 | MD5_Update(&md,er1,SSL3_RANDOM_SIZE); | |
215 | MD5_Update(&md,er2,SSL3_RANDOM_SIZE); | |
216 | MD5_Final(&(exp_key[0]),&md); | |
217 | key= &(exp_key[0]); | |
218 | ||
219 | if (k > 0) | |
220 | { | |
221 | MD5_Init(&md); | |
222 | MD5_Update(&md,er1,SSL3_RANDOM_SIZE); | |
223 | MD5_Update(&md,er2,SSL3_RANDOM_SIZE); | |
224 | MD5_Final(&(exp_iv[0]),&md); | |
225 | iv= &(exp_iv[0]); | |
226 | } | |
227 | } | |
228 | ||
229 | s->session->key_arg_length=0; | |
230 | ||
231 | EVP_CipherInit(dd,c,key,iv,(which & SSL3_CC_WRITE)); | |
232 | ||
233 | memset(&(exp_key[0]),0,sizeof(exp_key)); | |
234 | memset(&(exp_iv[0]),0,sizeof(exp_iv)); | |
235 | return(1); | |
236 | err: | |
237 | SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE); | |
238 | err2: | |
239 | return(0); | |
240 | } | |
241 | ||
242 | int ssl3_setup_key_block(s) | |
243 | SSL *s; | |
244 | { | |
245 | unsigned char *p; | |
246 | EVP_CIPHER *c; | |
247 | EVP_MD *hash; | |
248 | int num,exp; | |
249 | ||
250 | if (s->s3->tmp.key_block_length != 0) | |
251 | return(1); | |
252 | ||
253 | if (!ssl_cipher_get_evp(s->session->cipher,&c,&hash)) | |
254 | { | |
255 | SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE); | |
256 | return(0); | |
257 | } | |
258 | ||
259 | s->s3->tmp.new_sym_enc=c; | |
260 | s->s3->tmp.new_hash=hash; | |
261 | ||
262 | exp=(s->session->cipher->algorithms & SSL_EXPORT)?1:0; | |
263 | ||
264 | num=EVP_CIPHER_key_length(c)+EVP_MD_size(hash)+EVP_CIPHER_iv_length(c); | |
265 | num*=2; | |
266 | ||
267 | ssl3_cleanup_key_block(s); | |
268 | ||
269 | if ((p=(unsigned char *)Malloc(num)) == NULL) | |
270 | goto err; | |
271 | ||
272 | s->s3->tmp.key_block_length=num; | |
273 | s->s3->tmp.key_block=p; | |
274 | ||
275 | ssl3_generate_key_block(s,p,num); | |
276 | ||
277 | return(1); | |
278 | err: | |
279 | SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE); | |
280 | return(0); | |
281 | } | |
282 | ||
283 | void ssl3_cleanup_key_block(s) | |
284 | SSL *s; | |
285 | { | |
286 | if (s->s3->tmp.key_block != NULL) | |
287 | { | |
288 | memset(s->s3->tmp.key_block,0, | |
289 | s->s3->tmp.key_block_length); | |
290 | Free(s->s3->tmp.key_block); | |
291 | s->s3->tmp.key_block=NULL; | |
292 | } | |
293 | s->s3->tmp.key_block_length=0; | |
294 | } | |
295 | ||
296 | int ssl3_enc(s,send) | |
297 | SSL *s; | |
298 | int send; | |
299 | { | |
300 | SSL3_RECORD *rec; | |
301 | EVP_CIPHER_CTX *ds; | |
302 | unsigned long l; | |
303 | int bs,i; | |
304 | EVP_CIPHER *enc; | |
305 | SSL_COMPRESSION *comp; | |
306 | ||
307 | if (send) | |
308 | { | |
309 | ds=s->enc_write_ctx; | |
310 | rec= &(s->s3->wrec); | |
311 | if (s->enc_write_ctx == NULL) | |
312 | { enc=NULL; comp=NULL; } | |
313 | else | |
314 | { | |
315 | enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx); | |
316 | comp=s->write_compression; | |
317 | } | |
318 | } | |
319 | else | |
320 | { | |
321 | ds=s->enc_read_ctx; | |
322 | rec= &(s->s3->rrec); | |
323 | if (s->enc_read_ctx == NULL) | |
324 | { enc=NULL; comp=NULL; } | |
325 | else | |
326 | { | |
327 | enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx); | |
328 | comp=s->read_compression; | |
329 | } | |
330 | } | |
331 | ||
332 | if ((s->session == NULL) || (ds == NULL) || | |
333 | ((enc == NULL) && (comp == NULL))) | |
334 | { | |
335 | memcpy(rec->data,rec->input,rec->length); | |
336 | rec->input=rec->data; | |
337 | } | |
338 | else | |
339 | { | |
340 | l=rec->length; | |
341 | bs=EVP_CIPHER_block_size(ds->cipher); | |
342 | ||
343 | /* This should be using (bs-1) and bs instead of 7 and 8 */ | |
344 | if ((bs != 1) && send) | |
345 | { | |
346 | i=bs-((int)l%bs); | |
347 | ||
348 | /* we need to add 'i-1' padding bytes */ | |
349 | l+=i; | |
350 | rec->length+=i; | |
351 | rec->input[l-1]=(i-1); | |
352 | } | |
353 | ||
354 | EVP_Cipher(ds,rec->data,rec->input,l); | |
355 | ||
356 | if ((bs != 1) && !send) | |
357 | { | |
358 | i=rec->data[l-1]+1; | |
359 | if (i > bs) | |
360 | { | |
361 | SSLerr(SSL_F_SSL3_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG); | |
362 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPT_ERROR); | |
363 | return(0); | |
364 | } | |
365 | rec->length-=i; | |
366 | } | |
367 | } | |
368 | return(1); | |
369 | } | |
370 | ||
371 | void ssl3_init_finished_mac(s) | |
372 | SSL *s; | |
373 | { | |
374 | EVP_DigestInit(&(s->s3->finish_dgst1),s->ctx->md5); | |
375 | EVP_DigestInit(&(s->s3->finish_dgst2),s->ctx->sha1); | |
376 | } | |
377 | ||
378 | void ssl3_finish_mac(s,buf,len) | |
379 | SSL *s; | |
380 | unsigned char *buf; | |
381 | int len; | |
382 | { | |
383 | EVP_DigestUpdate(&(s->s3->finish_dgst1),buf,len); | |
384 | EVP_DigestUpdate(&(s->s3->finish_dgst2),buf,len); | |
385 | } | |
386 | ||
387 | int ssl3_cert_verify_mac(s,ctx,p) | |
388 | SSL *s; | |
389 | EVP_MD_CTX *ctx; | |
390 | unsigned char *p; | |
391 | { | |
392 | return(ssl3_handshake_mac(s,ctx,NULL,0,p)); | |
393 | } | |
394 | ||
395 | int ssl3_final_finish_mac(s,ctx1,ctx2,sender,len,p) | |
396 | SSL *s; | |
397 | EVP_MD_CTX *ctx1,*ctx2; | |
398 | unsigned char *sender; | |
399 | int len; | |
400 | unsigned char *p; | |
401 | { | |
402 | int ret; | |
403 | ||
404 | ret=ssl3_handshake_mac(s,ctx1,sender,len,p); | |
405 | p+=ret; | |
406 | ret+=ssl3_handshake_mac(s,ctx2,sender,len,p); | |
407 | return(ret); | |
408 | } | |
409 | ||
410 | static int ssl3_handshake_mac(s,in_ctx,sender,len,p) | |
411 | SSL *s; | |
412 | EVP_MD_CTX *in_ctx; | |
413 | unsigned char *sender; | |
414 | int len; | |
415 | unsigned char *p; | |
416 | { | |
417 | unsigned int ret; | |
418 | int npad,n; | |
419 | unsigned int i; | |
420 | unsigned char md_buf[EVP_MAX_MD_SIZE]; | |
421 | EVP_MD_CTX ctx; | |
422 | ||
423 | memcpy(&ctx,in_ctx,sizeof(EVP_MD_CTX)); | |
424 | ||
425 | n=EVP_MD_CTX_size(&ctx); | |
426 | npad=(48/n)*n; | |
427 | ||
428 | if (sender != NULL) | |
429 | EVP_DigestUpdate(&ctx,sender,len); | |
430 | EVP_DigestUpdate(&ctx,s->session->master_key, | |
431 | s->session->master_key_length); | |
432 | EVP_DigestUpdate(&ctx,ssl3_pad_1,npad); | |
433 | EVP_DigestFinal(&ctx,md_buf,&i); | |
434 | ||
435 | EVP_DigestInit(&ctx,EVP_MD_CTX_type(&ctx)); | |
436 | EVP_DigestUpdate(&ctx,s->session->master_key, | |
437 | s->session->master_key_length); | |
438 | EVP_DigestUpdate(&ctx,ssl3_pad_2,npad); | |
439 | EVP_DigestUpdate(&ctx,md_buf,i); | |
440 | EVP_DigestFinal(&ctx,p,&ret); | |
441 | ||
442 | memset(&ctx,0,sizeof(EVP_MD_CTX)); | |
443 | ||
444 | return((int)ret); | |
445 | } | |
446 | ||
447 | int ssl3_mac(ssl,md,send) | |
448 | SSL *ssl; | |
449 | unsigned char *md; | |
450 | int send; | |
451 | { | |
452 | SSL3_RECORD *rec; | |
453 | unsigned char *mac_sec,*seq; | |
454 | EVP_MD_CTX md_ctx; | |
455 | EVP_MD *hash; | |
456 | unsigned char *p,rec_char; | |
457 | unsigned int md_size; | |
458 | int npad,i; | |
459 | ||
460 | if (send) | |
461 | { | |
462 | rec= &(ssl->s3->wrec); | |
463 | mac_sec= &(ssl->s3->write_mac_secret[0]); | |
464 | seq= &(ssl->s3->write_sequence[0]); | |
465 | hash=ssl->write_hash; | |
466 | } | |
467 | else | |
468 | { | |
469 | rec= &(ssl->s3->rrec); | |
470 | mac_sec= &(ssl->s3->read_mac_secret[0]); | |
471 | seq= &(ssl->s3->read_sequence[0]); | |
472 | hash=ssl->read_hash; | |
473 | } | |
474 | ||
475 | md_size=EVP_MD_size(hash); | |
476 | npad=(48/md_size)*md_size; | |
477 | ||
478 | /* Chop the digest off the end :-) */ | |
479 | ||
480 | EVP_DigestInit( &md_ctx,hash); | |
481 | EVP_DigestUpdate(&md_ctx,mac_sec,md_size); | |
482 | EVP_DigestUpdate(&md_ctx,ssl3_pad_1,npad); | |
483 | EVP_DigestUpdate(&md_ctx,seq,8); | |
484 | rec_char=rec->type; | |
485 | EVP_DigestUpdate(&md_ctx,&rec_char,1); | |
486 | p=md; | |
487 | s2n(rec->length,p); | |
488 | EVP_DigestUpdate(&md_ctx,md,2); | |
489 | EVP_DigestUpdate(&md_ctx,rec->input,rec->length); | |
490 | EVP_DigestFinal( &md_ctx,md,NULL); | |
491 | ||
492 | EVP_DigestInit( &md_ctx,hash); | |
493 | EVP_DigestUpdate(&md_ctx,mac_sec,md_size); | |
494 | EVP_DigestUpdate(&md_ctx,ssl3_pad_2,npad); | |
495 | EVP_DigestUpdate(&md_ctx,md,md_size); | |
496 | EVP_DigestFinal( &md_ctx,md,&md_size); | |
497 | ||
498 | for (i=7; i>=0; i--) | |
499 | if (++seq[i]) break; | |
500 | ||
501 | return(md_size); | |
502 | } | |
503 | ||
504 | int ssl3_generate_master_secret(s,out,p,len) | |
505 | SSL *s; | |
506 | unsigned char *out; | |
507 | unsigned char *p; | |
508 | int len; | |
509 | { | |
510 | static unsigned char *salt[3]={ | |
511 | (unsigned char *)"A", | |
512 | (unsigned char *)"BB", | |
513 | (unsigned char *)"CCC", | |
514 | }; | |
515 | unsigned char buf[EVP_MAX_MD_SIZE]; | |
516 | EVP_MD_CTX ctx; | |
517 | int i,ret=0; | |
518 | unsigned int n; | |
519 | ||
520 | for (i=0; i<3; i++) | |
521 | { | |
522 | EVP_DigestInit(&ctx,s->ctx->sha1); | |
523 | EVP_DigestUpdate(&ctx,salt[i],strlen((char *)salt[i])); | |
524 | EVP_DigestUpdate(&ctx,p,len); | |
525 | EVP_DigestUpdate(&ctx,&(s->s3->client_random[0]), | |
526 | SSL3_RANDOM_SIZE); | |
527 | EVP_DigestUpdate(&ctx,&(s->s3->server_random[0]), | |
528 | SSL3_RANDOM_SIZE); | |
529 | EVP_DigestFinal(&ctx,buf,&n); | |
530 | ||
531 | EVP_DigestInit(&ctx,s->ctx->md5); | |
532 | EVP_DigestUpdate(&ctx,p,len); | |
533 | EVP_DigestUpdate(&ctx,buf,n); | |
534 | EVP_DigestFinal(&ctx,out,&n); | |
535 | out+=n; | |
536 | ret+=n; | |
537 | } | |
538 | return(ret); | |
539 | } | |
540 | ||
541 | int ssl3_alert_code(code) | |
542 | int code; | |
543 | { | |
544 | switch (code) | |
545 | { | |
546 | case SSL_AD_CLOSE_NOTIFY: return(SSL3_AD_CLOSE_NOTIFY); | |
547 | case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE); | |
548 | case SSL_AD_BAD_RECORD_MAC: return(SSL3_AD_BAD_RECORD_MAC); | |
549 | case SSL_AD_DECRYPTION_FAILED: return(SSL3_AD_BAD_RECORD_MAC); | |
550 | case SSL_AD_RECORD_OVERFLOW: return(SSL3_AD_BAD_RECORD_MAC); | |
551 | case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE); | |
552 | case SSL_AD_HANDSHAKE_FAILURE: return(SSL3_AD_HANDSHAKE_FAILURE); | |
553 | case SSL_AD_NO_CERTIFICATE: return(SSL3_AD_NO_CERTIFICATE); | |
554 | case SSL_AD_BAD_CERTIFICATE: return(SSL3_AD_BAD_CERTIFICATE); | |
555 | case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE); | |
556 | case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED); | |
557 | case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED); | |
558 | case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN); | |
559 | case SSL_AD_ILLEGAL_PARAMETER: return(SSL3_AD_ILLEGAL_PARAMETER); | |
560 | case SSL_AD_UNKNOWN_CA: return(SSL3_AD_BAD_CERTIFICATE); | |
561 | case SSL_AD_ACCESS_DENIED: return(SSL3_AD_HANDSHAKE_FAILURE); | |
562 | case SSL_AD_DECODE_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE); | |
563 | case SSL_AD_DECRYPT_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE); | |
564 | case SSL_AD_EXPORT_RESTRICION: return(SSL3_AD_HANDSHAKE_FAILURE); | |
565 | case SSL_AD_PROTOCOL_VERSION: return(SSL3_AD_HANDSHAKE_FAILURE); | |
566 | case SSL_AD_INSUFFICIENT_SECURITY:return(SSL3_AD_HANDSHAKE_FAILURE); | |
567 | case SSL_AD_INTERNAL_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE); | |
568 | case SSL_AD_USER_CANCLED: return(SSL3_AD_HANDSHAKE_FAILURE); | |
569 | case SSL_AD_NO_RENEGOTIATION: return(-1); /* Don't send it :-) */ | |
570 | default: return(-1); | |
571 | } | |
572 | } | |
573 |