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[thirdparty/openssl.git] / ssl / s3_enc.c
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 <openssl/md5.h>
61 #include <openssl/sha.h>
62 #include <openssl/evp.h>
63 #include "ssl_locl.h"
64
65 static unsigned char ssl3_pad_1[48]={
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 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
71 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36 };
72
73 static unsigned char ssl3_pad_2[48]={
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 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
79 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c };
80
81 static int ssl3_handshake_mac(SSL *s, EVP_MD_CTX *in_ctx,
82 const char *sender, int len, unsigned char *p);
83
84 static void ssl3_generate_key_block(SSL *s, unsigned char *km, int num)
85 {
86 MD5_CTX m5;
87 SHA_CTX s1;
88 unsigned char buf[8],smd[SHA_DIGEST_LENGTH];
89 unsigned char c='A';
90 int i,j,k;
91
92 #ifdef CHARSET_EBCDIC
93 c = os_toascii[c]; /*'A' in ASCII */
94 #endif
95 k=0;
96 for (i=0; i<num; i+=MD5_DIGEST_LENGTH)
97 {
98 k++;
99 for (j=0; j<k; j++)
100 buf[j]=c;
101 c++;
102 SHA1_Init( &s1);
103 SHA1_Update(&s1,buf,k);
104 SHA1_Update(&s1,s->session->master_key,
105 s->session->master_key_length);
106 SHA1_Update(&s1,s->s3->server_random,SSL3_RANDOM_SIZE);
107 SHA1_Update(&s1,s->s3->client_random,SSL3_RANDOM_SIZE);
108 SHA1_Final( smd,&s1);
109
110 MD5_Init( &m5);
111 MD5_Update(&m5,s->session->master_key,
112 s->session->master_key_length);
113 MD5_Update(&m5,smd,SHA_DIGEST_LENGTH);
114 if ((i+MD5_DIGEST_LENGTH) > num)
115 {
116 MD5_Final(smd,&m5);
117 memcpy(km,smd,(num-i));
118 }
119 else
120 MD5_Final(km,&m5);
121
122 km+=MD5_DIGEST_LENGTH;
123 }
124 memset(smd,0,SHA_DIGEST_LENGTH);
125 }
126
127 int ssl3_change_cipher_state(SSL *s, int which)
128 {
129 unsigned char *p,*key_block,*mac_secret;
130 unsigned char exp_key[EVP_MAX_KEY_LENGTH];
131 unsigned char exp_iv[EVP_MAX_KEY_LENGTH];
132 unsigned char *ms,*key,*iv,*er1,*er2;
133 EVP_CIPHER_CTX *dd;
134 const EVP_CIPHER *c;
135 COMP_METHOD *comp;
136 const EVP_MD *m;
137 MD5_CTX md;
138 int exp,n,i,j,k,cl;
139
140 exp=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
141 c=s->s3->tmp.new_sym_enc;
142 m=s->s3->tmp.new_hash;
143 if (s->s3->tmp.new_compression == NULL)
144 comp=NULL;
145 else
146 comp=s->s3->tmp.new_compression->method;
147 key_block=s->s3->tmp.key_block;
148
149 if (which & SSL3_CC_READ)
150 {
151 if ((s->enc_read_ctx == NULL) &&
152 ((s->enc_read_ctx=(EVP_CIPHER_CTX *)
153 OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
154 goto err;
155 dd= s->enc_read_ctx;
156 s->read_hash=m;
157 /* COMPRESS */
158 if (s->expand != NULL)
159 {
160 COMP_CTX_free(s->expand);
161 s->expand=NULL;
162 }
163 if (comp != NULL)
164 {
165 s->expand=COMP_CTX_new(comp);
166 if (s->expand == NULL)
167 {
168 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
169 goto err2;
170 }
171 if (s->s3->rrec.comp == NULL)
172 s->s3->rrec.comp=(unsigned char *)
173 OPENSSL_malloc(SSL3_RT_MAX_PLAIN_LENGTH);
174 if (s->s3->rrec.comp == NULL)
175 goto err;
176 }
177 memset(&(s->s3->read_sequence[0]),0,8);
178 mac_secret= &(s->s3->read_mac_secret[0]);
179 }
180 else
181 {
182 if ((s->enc_write_ctx == NULL) &&
183 ((s->enc_write_ctx=(EVP_CIPHER_CTX *)
184 OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
185 goto err;
186 dd= s->enc_write_ctx;
187 s->write_hash=m;
188 /* COMPRESS */
189 if (s->compress != NULL)
190 {
191 COMP_CTX_free(s->compress);
192 s->compress=NULL;
193 }
194 if (comp != NULL)
195 {
196 s->compress=COMP_CTX_new(comp);
197 if (s->compress == NULL)
198 {
199 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
200 goto err2;
201 }
202 }
203 memset(&(s->s3->write_sequence[0]),0,8);
204 mac_secret= &(s->s3->write_mac_secret[0]);
205 }
206
207 EVP_CIPHER_CTX_init(dd);
208
209 p=s->s3->tmp.key_block;
210 i=EVP_MD_size(m);
211 cl=EVP_CIPHER_key_length(c);
212 j=exp ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
213 cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
214 /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
215 k=EVP_CIPHER_iv_length(c);
216 if ( (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
217 (which == SSL3_CHANGE_CIPHER_SERVER_READ))
218 {
219 ms= &(p[ 0]); n=i+i;
220 key= &(p[ n]); n+=j+j;
221 iv= &(p[ n]); n+=k+k;
222 er1= &(s->s3->client_random[0]);
223 er2= &(s->s3->server_random[0]);
224 }
225 else
226 {
227 n=i;
228 ms= &(p[ n]); n+=i+j;
229 key= &(p[ n]); n+=j+k;
230 iv= &(p[ n]); n+=k;
231 er1= &(s->s3->server_random[0]);
232 er2= &(s->s3->client_random[0]);
233 }
234
235 if (n > s->s3->tmp.key_block_length)
236 {
237 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,SSL_R_INTERNAL_ERROR);
238 goto err2;
239 }
240
241 memcpy(mac_secret,ms,i);
242 if (exp)
243 {
244 /* In here I set both the read and write key/iv to the
245 * same value since only the correct one will be used :-).
246 */
247 MD5_Init(&md);
248 MD5_Update(&md,key,j);
249 MD5_Update(&md,er1,SSL3_RANDOM_SIZE);
250 MD5_Update(&md,er2,SSL3_RANDOM_SIZE);
251 MD5_Final(&(exp_key[0]),&md);
252 key= &(exp_key[0]);
253
254 if (k > 0)
255 {
256 MD5_Init(&md);
257 MD5_Update(&md,er1,SSL3_RANDOM_SIZE);
258 MD5_Update(&md,er2,SSL3_RANDOM_SIZE);
259 MD5_Final(&(exp_iv[0]),&md);
260 iv= &(exp_iv[0]);
261 }
262 }
263
264 s->session->key_arg_length=0;
265
266 EVP_CipherInit(dd,c,key,iv,(which & SSL3_CC_WRITE));
267
268 memset(&(exp_key[0]),0,sizeof(exp_key));
269 memset(&(exp_iv[0]),0,sizeof(exp_iv));
270 return(1);
271 err:
272 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE);
273 err2:
274 return(0);
275 }
276
277 int ssl3_setup_key_block(SSL *s)
278 {
279 unsigned char *p;
280 const EVP_CIPHER *c;
281 const EVP_MD *hash;
282 int num;
283 SSL_COMP *comp;
284
285 if (s->s3->tmp.key_block_length != 0)
286 return(1);
287
288 if (!ssl_cipher_get_evp(s->session,&c,&hash,&comp))
289 {
290 SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
291 return(0);
292 }
293
294 s->s3->tmp.new_sym_enc=c;
295 s->s3->tmp.new_hash=hash;
296 s->s3->tmp.new_compression=comp;
297
298 num=EVP_CIPHER_key_length(c)+EVP_MD_size(hash)+EVP_CIPHER_iv_length(c);
299 num*=2;
300
301 ssl3_cleanup_key_block(s);
302
303 if ((p=OPENSSL_malloc(num)) == NULL)
304 goto err;
305
306 s->s3->tmp.key_block_length=num;
307 s->s3->tmp.key_block=p;
308
309 ssl3_generate_key_block(s,p,num);
310
311 return(1);
312 err:
313 SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
314 return(0);
315 }
316
317 void ssl3_cleanup_key_block(SSL *s)
318 {
319 if (s->s3->tmp.key_block != NULL)
320 {
321 memset(s->s3->tmp.key_block,0,
322 s->s3->tmp.key_block_length);
323 OPENSSL_free(s->s3->tmp.key_block);
324 s->s3->tmp.key_block=NULL;
325 }
326 s->s3->tmp.key_block_length=0;
327 }
328
329 int ssl3_enc(SSL *s, int send)
330 {
331 SSL3_RECORD *rec;
332 EVP_CIPHER_CTX *ds;
333 unsigned long l;
334 int bs,i;
335 const EVP_CIPHER *enc;
336
337 if (send)
338 {
339 ds=s->enc_write_ctx;
340 rec= &(s->s3->wrec);
341 if (s->enc_write_ctx == NULL)
342 enc=NULL;
343 else
344 enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
345 }
346 else
347 {
348 ds=s->enc_read_ctx;
349 rec= &(s->s3->rrec);
350 if (s->enc_read_ctx == NULL)
351 enc=NULL;
352 else
353 enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
354 }
355
356 if ((s->session == NULL) || (ds == NULL) ||
357 (enc == NULL))
358 {
359 memcpy(rec->data,rec->input,rec->length);
360 rec->input=rec->data;
361 }
362 else
363 {
364 l=rec->length;
365 bs=EVP_CIPHER_block_size(ds->cipher);
366
367 /* COMPRESS */
368
369 /* This should be using (bs-1) and bs instead of 7 and 8 */
370 if ((bs != 1) && send)
371 {
372 i=bs-((int)l%bs);
373
374 /* we need to add 'i-1' padding bytes */
375 l+=i;
376 rec->length+=i;
377 rec->input[l-1]=(i-1);
378 }
379
380 EVP_Cipher(ds,rec->data,rec->input,l);
381
382 if ((bs != 1) && !send)
383 {
384 i=rec->data[l-1]+1;
385 if (i > bs)
386 {
387 SSLerr(SSL_F_SSL3_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
388 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPT_ERROR);
389 return(0);
390 }
391 rec->length-=i;
392 }
393 }
394 return(1);
395 }
396
397 void ssl3_init_finished_mac(SSL *s)
398 {
399 EVP_DigestInit(&(s->s3->finish_dgst1),s->ctx->md5);
400 EVP_DigestInit(&(s->s3->finish_dgst2),s->ctx->sha1);
401 }
402
403 void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len)
404 {
405 EVP_DigestUpdate(&(s->s3->finish_dgst1),buf,len);
406 EVP_DigestUpdate(&(s->s3->finish_dgst2),buf,len);
407 }
408
409 int ssl3_cert_verify_mac(SSL *s, EVP_MD_CTX *ctx, unsigned char *p)
410 {
411 return(ssl3_handshake_mac(s,ctx,NULL,0,p));
412 }
413
414 int ssl3_final_finish_mac(SSL *s, EVP_MD_CTX *ctx1, EVP_MD_CTX *ctx2,
415 const char *sender, int len, unsigned char *p)
416 {
417 int ret;
418
419 ret=ssl3_handshake_mac(s,ctx1,sender,len,p);
420 p+=ret;
421 ret+=ssl3_handshake_mac(s,ctx2,sender,len,p);
422 return(ret);
423 }
424
425 static int ssl3_handshake_mac(SSL *s, EVP_MD_CTX *in_ctx,
426 const char *sender, int len, unsigned char *p)
427 {
428 unsigned int ret;
429 int npad,n;
430 unsigned int i;
431 unsigned char md_buf[EVP_MAX_MD_SIZE];
432 EVP_MD_CTX ctx;
433
434 EVP_MD_CTX_copy(&ctx,in_ctx);
435
436 n=EVP_MD_CTX_size(&ctx);
437 npad=(48/n)*n;
438
439 if (sender != NULL)
440 EVP_DigestUpdate(&ctx,sender,len);
441 EVP_DigestUpdate(&ctx,s->session->master_key,
442 s->session->master_key_length);
443 EVP_DigestUpdate(&ctx,ssl3_pad_1,npad);
444 EVP_DigestFinal(&ctx,md_buf,&i);
445
446 EVP_DigestInit(&ctx,EVP_MD_CTX_md(&ctx));
447 EVP_DigestUpdate(&ctx,s->session->master_key,
448 s->session->master_key_length);
449 EVP_DigestUpdate(&ctx,ssl3_pad_2,npad);
450 EVP_DigestUpdate(&ctx,md_buf,i);
451 EVP_DigestFinal(&ctx,p,&ret);
452
453 memset(&ctx,0,sizeof(EVP_MD_CTX));
454
455 return((int)ret);
456 }
457
458 int ssl3_mac(SSL *ssl, unsigned char *md, int send)
459 {
460 SSL3_RECORD *rec;
461 unsigned char *mac_sec,*seq;
462 EVP_MD_CTX md_ctx;
463 const EVP_MD *hash;
464 unsigned char *p,rec_char;
465 unsigned int md_size;
466 int npad,i;
467
468 if (send)
469 {
470 rec= &(ssl->s3->wrec);
471 mac_sec= &(ssl->s3->write_mac_secret[0]);
472 seq= &(ssl->s3->write_sequence[0]);
473 hash=ssl->write_hash;
474 }
475 else
476 {
477 rec= &(ssl->s3->rrec);
478 mac_sec= &(ssl->s3->read_mac_secret[0]);
479 seq= &(ssl->s3->read_sequence[0]);
480 hash=ssl->read_hash;
481 }
482
483 md_size=EVP_MD_size(hash);
484 npad=(48/md_size)*md_size;
485
486 /* Chop the digest off the end :-) */
487
488 EVP_DigestInit( &md_ctx,hash);
489 EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
490 EVP_DigestUpdate(&md_ctx,ssl3_pad_1,npad);
491 EVP_DigestUpdate(&md_ctx,seq,8);
492 rec_char=rec->type;
493 EVP_DigestUpdate(&md_ctx,&rec_char,1);
494 p=md;
495 s2n(rec->length,p);
496 EVP_DigestUpdate(&md_ctx,md,2);
497 EVP_DigestUpdate(&md_ctx,rec->input,rec->length);
498 EVP_DigestFinal( &md_ctx,md,NULL);
499
500 EVP_DigestInit( &md_ctx,hash);
501 EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
502 EVP_DigestUpdate(&md_ctx,ssl3_pad_2,npad);
503 EVP_DigestUpdate(&md_ctx,md,md_size);
504 EVP_DigestFinal( &md_ctx,md,&md_size);
505
506 for (i=7; i>=0; i--)
507 if (++seq[i]) break;
508
509 return(md_size);
510 }
511
512 int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
513 int len)
514 {
515 static const unsigned char *salt[3]={
516 #ifndef CHARSET_EBCDIC
517 (const unsigned char *)"A",
518 (const unsigned char *)"BB",
519 (const unsigned char *)"CCC",
520 #else
521 (const unsigned char *)"\x41",
522 (const unsigned char *)"\x42\x42",
523 (const unsigned char *)"\x43\x43\x43",
524 #endif
525 };
526 unsigned char buf[EVP_MAX_MD_SIZE];
527 EVP_MD_CTX ctx;
528 int i,ret=0;
529 unsigned int n;
530
531 for (i=0; i<3; i++)
532 {
533 EVP_DigestInit(&ctx,s->ctx->sha1);
534 EVP_DigestUpdate(&ctx,salt[i],strlen((const char *)salt[i]));
535 EVP_DigestUpdate(&ctx,p,len);
536 EVP_DigestUpdate(&ctx,&(s->s3->client_random[0]),
537 SSL3_RANDOM_SIZE);
538 EVP_DigestUpdate(&ctx,&(s->s3->server_random[0]),
539 SSL3_RANDOM_SIZE);
540 EVP_DigestFinal(&ctx,buf,&n);
541
542 EVP_DigestInit(&ctx,s->ctx->md5);
543 EVP_DigestUpdate(&ctx,p,len);
544 EVP_DigestUpdate(&ctx,buf,n);
545 EVP_DigestFinal(&ctx,out,&n);
546 out+=n;
547 ret+=n;
548 }
549 return(ret);
550 }
551
552 int ssl3_alert_code(int code)
553 {
554 switch (code)
555 {
556 case SSL_AD_CLOSE_NOTIFY: return(SSL3_AD_CLOSE_NOTIFY);
557 case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE);
558 case SSL_AD_BAD_RECORD_MAC: return(SSL3_AD_BAD_RECORD_MAC);
559 case SSL_AD_DECRYPTION_FAILED: return(SSL3_AD_BAD_RECORD_MAC);
560 case SSL_AD_RECORD_OVERFLOW: return(SSL3_AD_BAD_RECORD_MAC);
561 case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE);
562 case SSL_AD_HANDSHAKE_FAILURE: return(SSL3_AD_HANDSHAKE_FAILURE);
563 case SSL_AD_NO_CERTIFICATE: return(SSL3_AD_NO_CERTIFICATE);
564 case SSL_AD_BAD_CERTIFICATE: return(SSL3_AD_BAD_CERTIFICATE);
565 case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE);
566 case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED);
567 case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED);
568 case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN);
569 case SSL_AD_ILLEGAL_PARAMETER: return(SSL3_AD_ILLEGAL_PARAMETER);
570 case SSL_AD_UNKNOWN_CA: return(SSL3_AD_BAD_CERTIFICATE);
571 case SSL_AD_ACCESS_DENIED: return(SSL3_AD_HANDSHAKE_FAILURE);
572 case SSL_AD_DECODE_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
573 case SSL_AD_DECRYPT_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
574 case SSL_AD_EXPORT_RESTRICTION: return(SSL3_AD_HANDSHAKE_FAILURE);
575 case SSL_AD_PROTOCOL_VERSION: return(SSL3_AD_HANDSHAKE_FAILURE);
576 case SSL_AD_INSUFFICIENT_SECURITY:return(SSL3_AD_HANDSHAKE_FAILURE);
577 case SSL_AD_INTERNAL_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
578 case SSL_AD_USER_CANCELLED: return(SSL3_AD_HANDSHAKE_FAILURE);
579 case SSL_AD_NO_RENEGOTIATION: return(-1); /* Don't send it :-) */
580 default: return(-1);
581 }
582 }
583
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