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) 1998-2002 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).
113 #include "ssl_locl.h"
114 #include <openssl/evp.h>
115 #include <openssl/md5.h>
117 static unsigned char ssl3_pad_1[48]={
118 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
119 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
120 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
121 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
122 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
123 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36 };
125 static unsigned char ssl3_pad_2[48]={
126 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
127 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
128 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
129 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
130 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
131 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c };
133 static int ssl3_handshake_mac(SSL *s, EVP_MD_CTX *in_ctx,
134 const char *sender, int len, unsigned char *p);
136 static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num)
140 unsigned char buf[16],smd[SHA_DIGEST_LENGTH];
144 #ifdef CHARSET_EBCDIC
145 c = os_toascii[c]; /*'A' in ASCII */
148 EVP_MD_CTX_init(&m5);
149 EVP_MD_CTX_init(&s1);
150 for (i=0; (int)i<num; i+=MD5_DIGEST_LENGTH)
155 /* bug: 'buf' is too small for this ciphersuite */
156 SSLerr(SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR);
163 EVP_DigestInit_ex(&s1,EVP_sha1(), NULL);
164 EVP_DigestUpdate(&s1,buf,k);
165 EVP_DigestUpdate(&s1,s->session->master_key,
166 s->session->master_key_length);
167 EVP_DigestUpdate(&s1,s->s3->server_random,SSL3_RANDOM_SIZE);
168 EVP_DigestUpdate(&s1,s->s3->client_random,SSL3_RANDOM_SIZE);
169 EVP_DigestFinal_ex(&s1,smd,NULL);
171 EVP_DigestInit_ex(&m5,EVP_md5(), NULL);
172 EVP_DigestUpdate(&m5,s->session->master_key,
173 s->session->master_key_length);
174 EVP_DigestUpdate(&m5,smd,SHA_DIGEST_LENGTH);
175 if ((int)(i+MD5_DIGEST_LENGTH) > num)
177 EVP_DigestFinal_ex(&m5,smd,NULL);
178 memcpy(km,smd,(num-i));
181 EVP_DigestFinal_ex(&m5,km,NULL);
183 km+=MD5_DIGEST_LENGTH;
185 OPENSSL_cleanse(smd,SHA_DIGEST_LENGTH);
186 EVP_MD_CTX_cleanup(&m5);
187 EVP_MD_CTX_cleanup(&s1);
191 int ssl3_change_cipher_state(SSL *s, int which)
193 unsigned char *p,*key_block,*mac_secret;
194 unsigned char exp_key[EVP_MAX_KEY_LENGTH];
195 unsigned char exp_iv[EVP_MAX_IV_LENGTH];
196 unsigned char *ms,*key,*iv,*er1,*er2;
199 #ifndef OPENSSL_NO_COMP
204 int is_exp,n,i,j,k,cl;
207 is_exp=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
208 c=s->s3->tmp.new_sym_enc;
209 m=s->s3->tmp.new_hash;
210 #ifndef OPENSSL_NO_COMP
211 if (s->s3->tmp.new_compression == NULL)
214 comp=s->s3->tmp.new_compression->method;
216 key_block=s->s3->tmp.key_block;
218 if (which & SSL3_CC_READ)
220 if (s->enc_read_ctx != NULL)
222 else if ((s->enc_read_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
226 #ifndef OPENSSL_NO_COMP
228 if (s->expand != NULL)
230 COMP_CTX_free(s->expand);
235 s->expand=COMP_CTX_new(comp);
236 if (s->expand == NULL)
238 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
241 if (s->s3->rrec.comp == NULL)
242 s->s3->rrec.comp=(unsigned char *)
243 OPENSSL_malloc(SSL3_RT_MAX_PLAIN_LENGTH);
244 if (s->s3->rrec.comp == NULL)
248 memset(&(s->s3->read_sequence[0]),0,8);
249 mac_secret= &(s->s3->read_mac_secret[0]);
253 if (s->enc_write_ctx != NULL)
255 else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
257 dd= s->enc_write_ctx;
259 #ifndef OPENSSL_NO_COMP
261 if (s->compress != NULL)
263 COMP_CTX_free(s->compress);
268 s->compress=COMP_CTX_new(comp);
269 if (s->compress == NULL)
271 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
276 memset(&(s->s3->write_sequence[0]),0,8);
277 mac_secret= &(s->s3->write_mac_secret[0]);
281 EVP_CIPHER_CTX_cleanup(dd);
282 EVP_CIPHER_CTX_init(dd);
284 p=s->s3->tmp.key_block;
286 cl=EVP_CIPHER_key_length(c);
287 j=is_exp ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
288 cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
289 /* Was j=(is_exp)?5:EVP_CIPHER_key_length(c); */
290 k=EVP_CIPHER_iv_length(c);
291 if ( (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
292 (which == SSL3_CHANGE_CIPHER_SERVER_READ))
295 key= &(p[ n]); n+=j+j;
296 iv= &(p[ n]); n+=k+k;
297 er1= &(s->s3->client_random[0]);
298 er2= &(s->s3->server_random[0]);
303 ms= &(p[ n]); n+=i+j;
304 key= &(p[ n]); n+=j+k;
306 er1= &(s->s3->server_random[0]);
307 er2= &(s->s3->client_random[0]);
310 if (n > s->s3->tmp.key_block_length)
312 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,ERR_R_INTERNAL_ERROR);
316 EVP_MD_CTX_init(&md);
317 memcpy(mac_secret,ms,i);
320 /* In here I set both the read and write key/iv to the
321 * same value since only the correct one will be used :-).
323 EVP_DigestInit_ex(&md,EVP_md5(), NULL);
324 EVP_DigestUpdate(&md,key,j);
325 EVP_DigestUpdate(&md,er1,SSL3_RANDOM_SIZE);
326 EVP_DigestUpdate(&md,er2,SSL3_RANDOM_SIZE);
327 EVP_DigestFinal_ex(&md,&(exp_key[0]),NULL);
332 EVP_DigestInit_ex(&md,EVP_md5(), NULL);
333 EVP_DigestUpdate(&md,er1,SSL3_RANDOM_SIZE);
334 EVP_DigestUpdate(&md,er2,SSL3_RANDOM_SIZE);
335 EVP_DigestFinal_ex(&md,&(exp_iv[0]),NULL);
340 s->session->key_arg_length=0;
342 EVP_CipherInit_ex(dd,c,NULL,key,iv,(which & SSL3_CC_WRITE));
344 OPENSSL_cleanse(&(exp_key[0]),sizeof(exp_key));
345 OPENSSL_cleanse(&(exp_iv[0]),sizeof(exp_iv));
346 EVP_MD_CTX_cleanup(&md);
349 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE);
354 int ssl3_setup_key_block(SSL *s)
363 if (s->s3->tmp.key_block_length != 0)
366 if (!ssl_cipher_get_evp(s->session,&c,&hash,&comp))
368 SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
372 s->s3->tmp.new_sym_enc=c;
373 s->s3->tmp.new_hash=hash;
374 #ifdef OPENSSL_NO_COMP
375 s->s3->tmp.new_compression=NULL;
377 s->s3->tmp.new_compression=comp;
380 num=EVP_CIPHER_key_length(c)+EVP_MD_size(hash)+EVP_CIPHER_iv_length(c);
383 ssl3_cleanup_key_block(s);
385 if ((p=OPENSSL_malloc(num)) == NULL)
388 s->s3->tmp.key_block_length=num;
389 s->s3->tmp.key_block=p;
391 ret = ssl3_generate_key_block(s,p,num);
393 if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS))
395 /* enable vulnerability countermeasure for CBC ciphers with
396 * known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt)
398 s->s3->need_empty_fragments = 1;
400 if (s->session->cipher != NULL)
402 if ((s->session->cipher->algorithms & SSL_ENC_MASK) == SSL_eNULL)
403 s->s3->need_empty_fragments = 0;
405 #ifndef OPENSSL_NO_RC4
406 if ((s->session->cipher->algorithms & SSL_ENC_MASK) == SSL_RC4)
407 s->s3->need_empty_fragments = 0;
415 SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
419 void ssl3_cleanup_key_block(SSL *s)
421 if (s->s3->tmp.key_block != NULL)
423 OPENSSL_cleanse(s->s3->tmp.key_block,
424 s->s3->tmp.key_block_length);
425 OPENSSL_free(s->s3->tmp.key_block);
426 s->s3->tmp.key_block=NULL;
428 s->s3->tmp.key_block_length=0;
431 int ssl3_enc(SSL *s, int send)
437 const EVP_CIPHER *enc;
443 if (s->enc_write_ctx == NULL)
446 enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
452 if (s->enc_read_ctx == NULL)
455 enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
458 if ((s->session == NULL) || (ds == NULL) ||
461 memmove(rec->data,rec->input,rec->length);
462 rec->input=rec->data;
467 bs=EVP_CIPHER_block_size(ds->cipher);
471 if ((bs != 1) && send)
475 /* we need to add 'i-1' padding bytes */
478 rec->input[l-1]=(i-1);
483 if (l == 0 || l%bs != 0)
485 SSLerr(SSL_F_SSL3_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
486 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
489 /* otherwise, rec->length >= bs */
492 EVP_Cipher(ds,rec->data,rec->input,l);
494 if ((bs != 1) && !send)
497 /* SSL 3.0 bounds the number of padding bytes by the block size;
498 * padding bytes (except the last one) are arbitrary */
501 /* Incorrect padding. SSLerr() and ssl3_alert are done
502 * by caller: we don't want to reveal whether this is
503 * a decryption error or a MAC verification failure
504 * (see http://www.openssl.org/~bodo/tls-cbc.txt) */
507 /* now i <= bs <= rec->length */
514 void ssl3_init_finished_mac(SSL *s)
516 EVP_DigestInit_ex(&(s->s3->finish_dgst1),s->ctx->md5, NULL);
517 EVP_DigestInit_ex(&(s->s3->finish_dgst2),s->ctx->sha1, NULL);
520 void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len)
522 EVP_DigestUpdate(&(s->s3->finish_dgst1),buf,len);
523 EVP_DigestUpdate(&(s->s3->finish_dgst2),buf,len);
526 int ssl3_cert_verify_mac(SSL *s, EVP_MD_CTX *ctx, unsigned char *p)
528 return(ssl3_handshake_mac(s,ctx,NULL,0,p));
531 int ssl3_final_finish_mac(SSL *s, EVP_MD_CTX *ctx1, EVP_MD_CTX *ctx2,
532 const char *sender, int len, unsigned char *p)
536 ret=ssl3_handshake_mac(s,ctx1,sender,len,p);
538 ret+=ssl3_handshake_mac(s,ctx2,sender,len,p);
542 static int ssl3_handshake_mac(SSL *s, EVP_MD_CTX *in_ctx,
543 const char *sender, int len, unsigned char *p)
548 unsigned char md_buf[EVP_MAX_MD_SIZE];
551 EVP_MD_CTX_init(&ctx);
552 EVP_MD_CTX_copy_ex(&ctx,in_ctx);
554 n=EVP_MD_CTX_size(&ctx);
558 EVP_DigestUpdate(&ctx,sender,len);
559 EVP_DigestUpdate(&ctx,s->session->master_key,
560 s->session->master_key_length);
561 EVP_DigestUpdate(&ctx,ssl3_pad_1,npad);
562 EVP_DigestFinal_ex(&ctx,md_buf,&i);
564 EVP_DigestInit_ex(&ctx,EVP_MD_CTX_md(&ctx), NULL);
565 EVP_DigestUpdate(&ctx,s->session->master_key,
566 s->session->master_key_length);
567 EVP_DigestUpdate(&ctx,ssl3_pad_2,npad);
568 EVP_DigestUpdate(&ctx,md_buf,i);
569 EVP_DigestFinal_ex(&ctx,p,&ret);
571 EVP_MD_CTX_cleanup(&ctx);
576 int ssl3_mac(SSL *ssl, unsigned char *md, int send)
579 unsigned char *mac_sec,*seq;
582 unsigned char *p,rec_char;
583 unsigned int md_size;
588 rec= &(ssl->s3->wrec);
589 mac_sec= &(ssl->s3->write_mac_secret[0]);
590 seq= &(ssl->s3->write_sequence[0]);
591 hash=ssl->write_hash;
595 rec= &(ssl->s3->rrec);
596 mac_sec= &(ssl->s3->read_mac_secret[0]);
597 seq= &(ssl->s3->read_sequence[0]);
601 md_size=EVP_MD_size(hash);
602 npad=(48/md_size)*md_size;
604 /* Chop the digest off the end :-) */
605 EVP_MD_CTX_init(&md_ctx);
607 EVP_DigestInit_ex( &md_ctx,hash, NULL);
608 EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
609 EVP_DigestUpdate(&md_ctx,ssl3_pad_1,npad);
610 EVP_DigestUpdate(&md_ctx,seq,8);
612 EVP_DigestUpdate(&md_ctx,&rec_char,1);
615 EVP_DigestUpdate(&md_ctx,md,2);
616 EVP_DigestUpdate(&md_ctx,rec->input,rec->length);
617 EVP_DigestFinal_ex( &md_ctx,md,NULL);
619 EVP_DigestInit_ex( &md_ctx,hash, NULL);
620 EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
621 EVP_DigestUpdate(&md_ctx,ssl3_pad_2,npad);
622 EVP_DigestUpdate(&md_ctx,md,md_size);
623 EVP_DigestFinal_ex( &md_ctx,md,&md_size);
625 EVP_MD_CTX_cleanup(&md_ctx);
627 ssl3_record_sequence_update(seq);
631 void ssl3_record_sequence_update(unsigned char *seq)
638 if (seq[i] != 0) break;
642 int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
645 static const unsigned char *salt[3]={
646 #ifndef CHARSET_EBCDIC
647 (const unsigned char *)"A",
648 (const unsigned char *)"BB",
649 (const unsigned char *)"CCC",
651 (const unsigned char *)"\x41",
652 (const unsigned char *)"\x42\x42",
653 (const unsigned char *)"\x43\x43\x43",
656 unsigned char buf[EVP_MAX_MD_SIZE];
661 EVP_MD_CTX_init(&ctx);
664 EVP_DigestInit_ex(&ctx,s->ctx->sha1, NULL);
665 EVP_DigestUpdate(&ctx,salt[i],strlen((const char *)salt[i]));
666 EVP_DigestUpdate(&ctx,p,len);
667 EVP_DigestUpdate(&ctx,&(s->s3->client_random[0]),
669 EVP_DigestUpdate(&ctx,&(s->s3->server_random[0]),
671 EVP_DigestFinal_ex(&ctx,buf,&n);
673 EVP_DigestInit_ex(&ctx,s->ctx->md5, NULL);
674 EVP_DigestUpdate(&ctx,p,len);
675 EVP_DigestUpdate(&ctx,buf,n);
676 EVP_DigestFinal_ex(&ctx,out,&n);
680 EVP_MD_CTX_cleanup(&ctx);
684 int ssl3_alert_code(int code)
688 case SSL_AD_CLOSE_NOTIFY: return(SSL3_AD_CLOSE_NOTIFY);
689 case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE);
690 case SSL_AD_BAD_RECORD_MAC: return(SSL3_AD_BAD_RECORD_MAC);
691 case SSL_AD_DECRYPTION_FAILED: return(SSL3_AD_BAD_RECORD_MAC);
692 case SSL_AD_RECORD_OVERFLOW: return(SSL3_AD_BAD_RECORD_MAC);
693 case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE);
694 case SSL_AD_HANDSHAKE_FAILURE: return(SSL3_AD_HANDSHAKE_FAILURE);
695 case SSL_AD_NO_CERTIFICATE: return(SSL3_AD_NO_CERTIFICATE);
696 case SSL_AD_BAD_CERTIFICATE: return(SSL3_AD_BAD_CERTIFICATE);
697 case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE);
698 case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED);
699 case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED);
700 case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN);
701 case SSL_AD_ILLEGAL_PARAMETER: return(SSL3_AD_ILLEGAL_PARAMETER);
702 case SSL_AD_UNKNOWN_CA: return(SSL3_AD_BAD_CERTIFICATE);
703 case SSL_AD_ACCESS_DENIED: return(SSL3_AD_HANDSHAKE_FAILURE);
704 case SSL_AD_DECODE_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
705 case SSL_AD_DECRYPT_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
706 case SSL_AD_EXPORT_RESTRICTION: return(SSL3_AD_HANDSHAKE_FAILURE);
707 case SSL_AD_PROTOCOL_VERSION: return(SSL3_AD_HANDSHAKE_FAILURE);
708 case SSL_AD_INSUFFICIENT_SECURITY:return(SSL3_AD_HANDSHAKE_FAILURE);
709 case SSL_AD_INTERNAL_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
710 case SSL_AD_USER_CANCELLED: return(SSL3_AD_HANDSHAKE_FAILURE);
711 case SSL_AD_NO_RENEGOTIATION: return(-1); /* Don't send it :-) */