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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 "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 COMP_METHOD *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 /* COMPRESS */
159 if (s->expand != NULL)
160 {
161 COMP_CTX_free(s->expand);
162 s->expand=NULL;
163 }
164 if (comp != NULL)
165 {
166 s->expand=COMP_CTX_new(comp);
167 if (s->expand == NULL)
168 {
169 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
170 goto err2;
171 }
172 s->s3->rrec.comp=(unsigned char *)
173 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 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 j=(exp)?5:EVP_CIPHER_key_length(c);
212 k=EVP_CIPHER_iv_length(c);
213 if ( (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
214 (which == SSL3_CHANGE_CIPHER_SERVER_READ))
215 {
216 ms= &(p[ 0]); n=i+i;
217 key= &(p[ n]); n+=j+j;
218 iv= &(p[ n]); n+=k+k;
219 er1= &(s->s3->client_random[0]);
220 er2= &(s->s3->server_random[0]);
221 }
222 else
223 {
224 n=i;
225 ms= &(p[ n]); n+=i+j;
226 key= &(p[ n]); n+=j+k;
227 iv= &(p[ n]); n+=k;
228 er1= &(s->s3->server_random[0]);
229 er2= &(s->s3->client_random[0]);
230 }
231
232 if (n > s->s3->tmp.key_block_length)
233 {
234 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,SSL_R_INTERNAL_ERROR);
235 goto err2;
236 }
237
238 memcpy(mac_secret,ms,i);
239 if (exp)
240 {
241 /* In here I set both the read and write key/iv to the
242 * same value since only the correct one will be used :-).
243 */
244 MD5_Init(&md);
245 MD5_Update(&md,key,j);
246 MD5_Update(&md,er1,SSL3_RANDOM_SIZE);
247 MD5_Update(&md,er2,SSL3_RANDOM_SIZE);
248 MD5_Final(&(exp_key[0]),&md);
249 key= &(exp_key[0]);
250
251 if (k > 0)
252 {
253 MD5_Init(&md);
254 MD5_Update(&md,er1,SSL3_RANDOM_SIZE);
255 MD5_Update(&md,er2,SSL3_RANDOM_SIZE);
256 MD5_Final(&(exp_iv[0]),&md);
257 iv= &(exp_iv[0]);
258 }
259 }
260
261 s->session->key_arg_length=0;
262
263 EVP_CipherInit(dd,c,key,iv,(which & SSL3_CC_WRITE));
264
265 memset(&(exp_key[0]),0,sizeof(exp_key));
266 memset(&(exp_iv[0]),0,sizeof(exp_iv));
267 return(1);
268 err:
269 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE);
270 err2:
271 return(0);
272 }
273
274 int ssl3_setup_key_block(s)
275 SSL *s;
276 {
277 unsigned char *p;
278 EVP_CIPHER *c;
279 EVP_MD *hash;
280 int num,exp;
281
282 if (s->s3->tmp.key_block_length != 0)
283 return(1);
284
285 if (!ssl_cipher_get_evp(s->session->cipher,&c,&hash))
286 {
287 SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
288 return(0);
289 }
290
291 s->s3->tmp.new_sym_enc=c;
292 s->s3->tmp.new_hash=hash;
293 #ifdef ZLIB
294 s->s3->tmp.new_compression=COMP_zlib();
295 #endif
296 /* s->s3->tmp.new_compression=COMP_rle(); */
297 /* s->session->compress_meth= xxxxx */
298
299 exp=(s->session->cipher->algorithms & SSL_EXPORT)?1:0;
300
301 num=EVP_CIPHER_key_length(c)+EVP_MD_size(hash)+EVP_CIPHER_iv_length(c);
302 num*=2;
303
304 ssl3_cleanup_key_block(s);
305
306 if ((p=(unsigned char *)Malloc(num)) == NULL)
307 goto err;
308
309 s->s3->tmp.key_block_length=num;
310 s->s3->tmp.key_block=p;
311
312 ssl3_generate_key_block(s,p,num);
313
314 return(1);
315 err:
316 SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
317 return(0);
318 }
319
320 void ssl3_cleanup_key_block(s)
321 SSL *s;
322 {
323 if (s->s3->tmp.key_block != NULL)
324 {
325 memset(s->s3->tmp.key_block,0,
326 s->s3->tmp.key_block_length);
327 Free(s->s3->tmp.key_block);
328 s->s3->tmp.key_block=NULL;
329 }
330 s->s3->tmp.key_block_length=0;
331 }
332
333 int ssl3_enc(s,send)
334 SSL *s;
335 int send;
336 {
337 SSL3_RECORD *rec;
338 EVP_CIPHER_CTX *ds;
339 unsigned long l;
340 int bs,i;
341 EVP_CIPHER *enc;
342
343 if (send)
344 {
345 ds=s->enc_write_ctx;
346 rec= &(s->s3->wrec);
347 if (s->enc_write_ctx == NULL)
348 enc=NULL;
349 else
350 enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
351 }
352 else
353 {
354 ds=s->enc_read_ctx;
355 rec= &(s->s3->rrec);
356 if (s->enc_read_ctx == NULL)
357 enc=NULL;
358 else
359 enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
360 }
361
362 if ((s->session == NULL) || (ds == NULL) ||
363 (enc == NULL))
364 {
365 memcpy(rec->data,rec->input,rec->length);
366 rec->input=rec->data;
367 }
368 else
369 {
370 l=rec->length;
371 bs=EVP_CIPHER_block_size(ds->cipher);
372
373 /* COMPRESS */
374
375 /* This should be using (bs-1) and bs instead of 7 and 8 */
376 if ((bs != 1) && send)
377 {
378 i=bs-((int)l%bs);
379
380 /* we need to add 'i-1' padding bytes */
381 l+=i;
382 rec->length+=i;
383 rec->input[l-1]=(i-1);
384 }
385
386 EVP_Cipher(ds,rec->data,rec->input,l);
387
388 if ((bs != 1) && !send)
389 {
390 i=rec->data[l-1]+1;
391 if (i > bs)
392 {
393 SSLerr(SSL_F_SSL3_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
394 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPT_ERROR);
395 return(0);
396 }
397 rec->length-=i;
398 }
399 }
400 return(1);
401 }
402
403 void ssl3_init_finished_mac(s)
404 SSL *s;
405 {
406 EVP_DigestInit(&(s->s3->finish_dgst1),s->ctx->md5);
407 EVP_DigestInit(&(s->s3->finish_dgst2),s->ctx->sha1);
408 }
409
410 void ssl3_finish_mac(s,buf,len)
411 SSL *s;
412 unsigned char *buf;
413 int len;
414 {
415 EVP_DigestUpdate(&(s->s3->finish_dgst1),buf,len);
416 EVP_DigestUpdate(&(s->s3->finish_dgst2),buf,len);
417 }
418
419 int ssl3_cert_verify_mac(s,ctx,p)
420 SSL *s;
421 EVP_MD_CTX *ctx;
422 unsigned char *p;
423 {
424 return(ssl3_handshake_mac(s,ctx,NULL,0,p));
425 }
426
427 int ssl3_final_finish_mac(s,ctx1,ctx2,sender,len,p)
428 SSL *s;
429 EVP_MD_CTX *ctx1,*ctx2;
430 unsigned char *sender;
431 int len;
432 unsigned char *p;
433 {
434 int ret;
435
436 ret=ssl3_handshake_mac(s,ctx1,sender,len,p);
437 p+=ret;
438 ret+=ssl3_handshake_mac(s,ctx2,sender,len,p);
439 return(ret);
440 }
441
442 static int ssl3_handshake_mac(s,in_ctx,sender,len,p)
443 SSL *s;
444 EVP_MD_CTX *in_ctx;
445 unsigned char *sender;
446 int len;
447 unsigned char *p;
448 {
449 unsigned int ret;
450 int npad,n;
451 unsigned int i;
452 unsigned char md_buf[EVP_MAX_MD_SIZE];
453 EVP_MD_CTX ctx;
454
455 memcpy(&ctx,in_ctx,sizeof(EVP_MD_CTX));
456
457 n=EVP_MD_CTX_size(&ctx);
458 npad=(48/n)*n;
459
460 if (sender != NULL)
461 EVP_DigestUpdate(&ctx,sender,len);
462 EVP_DigestUpdate(&ctx,s->session->master_key,
463 s->session->master_key_length);
464 EVP_DigestUpdate(&ctx,ssl3_pad_1,npad);
465 EVP_DigestFinal(&ctx,md_buf,&i);
466
467 EVP_DigestInit(&ctx,EVP_MD_CTX_type(&ctx));
468 EVP_DigestUpdate(&ctx,s->session->master_key,
469 s->session->master_key_length);
470 EVP_DigestUpdate(&ctx,ssl3_pad_2,npad);
471 EVP_DigestUpdate(&ctx,md_buf,i);
472 EVP_DigestFinal(&ctx,p,&ret);
473
474 memset(&ctx,0,sizeof(EVP_MD_CTX));
475
476 return((int)ret);
477 }
478
479 int ssl3_mac(ssl,md,send)
480 SSL *ssl;
481 unsigned char *md;
482 int send;
483 {
484 SSL3_RECORD *rec;
485 unsigned char *mac_sec,*seq;
486 EVP_MD_CTX md_ctx;
487 EVP_MD *hash;
488 unsigned char *p,rec_char;
489 unsigned int md_size;
490 int npad,i;
491
492 if (send)
493 {
494 rec= &(ssl->s3->wrec);
495 mac_sec= &(ssl->s3->write_mac_secret[0]);
496 seq= &(ssl->s3->write_sequence[0]);
497 hash=ssl->write_hash;
498 }
499 else
500 {
501 rec= &(ssl->s3->rrec);
502 mac_sec= &(ssl->s3->read_mac_secret[0]);
503 seq= &(ssl->s3->read_sequence[0]);
504 hash=ssl->read_hash;
505 }
506
507 md_size=EVP_MD_size(hash);
508 npad=(48/md_size)*md_size;
509
510 /* Chop the digest off the end :-) */
511
512 EVP_DigestInit( &md_ctx,hash);
513 EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
514 EVP_DigestUpdate(&md_ctx,ssl3_pad_1,npad);
515 EVP_DigestUpdate(&md_ctx,seq,8);
516 rec_char=rec->type;
517 EVP_DigestUpdate(&md_ctx,&rec_char,1);
518 p=md;
519 s2n(rec->length,p);
520 EVP_DigestUpdate(&md_ctx,md,2);
521 EVP_DigestUpdate(&md_ctx,rec->input,rec->length);
522 EVP_DigestFinal( &md_ctx,md,NULL);
523
524 EVP_DigestInit( &md_ctx,hash);
525 EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
526 EVP_DigestUpdate(&md_ctx,ssl3_pad_2,npad);
527 EVP_DigestUpdate(&md_ctx,md,md_size);
528 EVP_DigestFinal( &md_ctx,md,&md_size);
529
530 for (i=7; i>=0; i--)
531 if (++seq[i]) break;
532
533 return(md_size);
534 }
535
536 int ssl3_generate_master_secret(s,out,p,len)
537 SSL *s;
538 unsigned char *out;
539 unsigned char *p;
540 int len;
541 {
542 static unsigned char *salt[3]={
543 (unsigned char *)"A",
544 (unsigned char *)"BB",
545 (unsigned char *)"CCC",
546 };
547 unsigned char buf[EVP_MAX_MD_SIZE];
548 EVP_MD_CTX ctx;
549 int i,ret=0;
550 unsigned int n;
551
552 for (i=0; i<3; i++)
553 {
554 EVP_DigestInit(&ctx,s->ctx->sha1);
555 EVP_DigestUpdate(&ctx,salt[i],strlen((char *)salt[i]));
556 EVP_DigestUpdate(&ctx,p,len);
557 EVP_DigestUpdate(&ctx,&(s->s3->client_random[0]),
558 SSL3_RANDOM_SIZE);
559 EVP_DigestUpdate(&ctx,&(s->s3->server_random[0]),
560 SSL3_RANDOM_SIZE);
561 EVP_DigestFinal(&ctx,buf,&n);
562
563 EVP_DigestInit(&ctx,s->ctx->md5);
564 EVP_DigestUpdate(&ctx,p,len);
565 EVP_DigestUpdate(&ctx,buf,n);
566 EVP_DigestFinal(&ctx,out,&n);
567 out+=n;
568 ret+=n;
569 }
570 return(ret);
571 }
572
573 int ssl3_alert_code(code)
574 int code;
575 {
576 switch (code)
577 {
578 case SSL_AD_CLOSE_NOTIFY: return(SSL3_AD_CLOSE_NOTIFY);
579 case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE);
580 case SSL_AD_BAD_RECORD_MAC: return(SSL3_AD_BAD_RECORD_MAC);
581 case SSL_AD_DECRYPTION_FAILED: return(SSL3_AD_BAD_RECORD_MAC);
582 case SSL_AD_RECORD_OVERFLOW: return(SSL3_AD_BAD_RECORD_MAC);
583 case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE);
584 case SSL_AD_HANDSHAKE_FAILURE: return(SSL3_AD_HANDSHAKE_FAILURE);
585 case SSL_AD_NO_CERTIFICATE: return(SSL3_AD_NO_CERTIFICATE);
586 case SSL_AD_BAD_CERTIFICATE: return(SSL3_AD_BAD_CERTIFICATE);
587 case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE);
588 case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED);
589 case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED);
590 case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN);
591 case SSL_AD_ILLEGAL_PARAMETER: return(SSL3_AD_ILLEGAL_PARAMETER);
592 case SSL_AD_UNKNOWN_CA: return(SSL3_AD_BAD_CERTIFICATE);
593 case SSL_AD_ACCESS_DENIED: return(SSL3_AD_HANDSHAKE_FAILURE);
594 case SSL_AD_DECODE_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
595 case SSL_AD_DECRYPT_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
596 case SSL_AD_EXPORT_RESTRICION: return(SSL3_AD_HANDSHAKE_FAILURE);
597 case SSL_AD_PROTOCOL_VERSION: return(SSL3_AD_HANDSHAKE_FAILURE);
598 case SSL_AD_INSUFFICIENT_SECURITY:return(SSL3_AD_HANDSHAKE_FAILURE);
599 case SSL_AD_INTERNAL_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
600 case SSL_AD_USER_CANCLED: return(SSL3_AD_HANDSHAKE_FAILURE);
601 case SSL_AD_NO_RENEGOTIATION: return(-1); /* Don't send it :-) */
602 default: return(-1);
603 }
604 }
605
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