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 <openssl/evp.h>
114 #include "ssl_locl.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; 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 ((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 memset(smd,0,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_KEY_LENGTH];
196 unsigned char *ms,*key,*iv,*er1,*er2;
205 exp=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
206 c=s->s3->tmp.new_sym_enc;
207 m=s->s3->tmp.new_hash;
208 if (s->s3->tmp.new_compression == NULL)
211 comp=s->s3->tmp.new_compression->method;
212 key_block=s->s3->tmp.key_block;
214 if (which & SSL3_CC_READ)
216 if (s->enc_read_ctx != NULL)
218 else if ((s->enc_read_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
223 if (s->expand != NULL)
225 COMP_CTX_free(s->expand);
230 s->expand=COMP_CTX_new(comp);
231 if (s->expand == NULL)
233 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
236 if (s->s3->rrec.comp == NULL)
237 s->s3->rrec.comp=(unsigned char *)
238 OPENSSL_malloc(SSL3_RT_MAX_PLAIN_LENGTH);
239 if (s->s3->rrec.comp == NULL)
242 memset(&(s->s3->read_sequence[0]),0,8);
243 mac_secret= &(s->s3->read_mac_secret[0]);
247 if (s->enc_write_ctx != NULL)
249 else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
251 dd= s->enc_write_ctx;
254 if (s->compress != NULL)
256 COMP_CTX_free(s->compress);
261 s->compress=COMP_CTX_new(comp);
262 if (s->compress == NULL)
264 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
268 memset(&(s->s3->write_sequence[0]),0,8);
269 mac_secret= &(s->s3->write_mac_secret[0]);
273 EVP_CIPHER_CTX_cleanup(dd);
274 EVP_CIPHER_CTX_init(dd);
276 p=s->s3->tmp.key_block;
278 cl=EVP_CIPHER_key_length(c);
279 j=exp ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
280 cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
281 /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
282 k=EVP_CIPHER_iv_length(c);
283 if ( (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
284 (which == SSL3_CHANGE_CIPHER_SERVER_READ))
287 key= &(p[ n]); n+=j+j;
288 iv= &(p[ n]); n+=k+k;
289 er1= &(s->s3->client_random[0]);
290 er2= &(s->s3->server_random[0]);
295 ms= &(p[ n]); n+=i+j;
296 key= &(p[ n]); n+=j+k;
298 er1= &(s->s3->server_random[0]);
299 er2= &(s->s3->client_random[0]);
302 if (n > s->s3->tmp.key_block_length)
304 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,ERR_R_INTERNAL_ERROR);
308 EVP_MD_CTX_init(&md);
309 memcpy(mac_secret,ms,i);
312 /* In here I set both the read and write key/iv to the
313 * same value since only the correct one will be used :-).
315 EVP_DigestInit_ex(&md,EVP_md5(), NULL);
316 EVP_DigestUpdate(&md,key,j);
317 EVP_DigestUpdate(&md,er1,SSL3_RANDOM_SIZE);
318 EVP_DigestUpdate(&md,er2,SSL3_RANDOM_SIZE);
319 EVP_DigestFinal_ex(&md,&(exp_key[0]),NULL);
324 EVP_DigestInit_ex(&md,EVP_md5(), NULL);
325 EVP_DigestUpdate(&md,er1,SSL3_RANDOM_SIZE);
326 EVP_DigestUpdate(&md,er2,SSL3_RANDOM_SIZE);
327 EVP_DigestFinal_ex(&md,&(exp_iv[0]),NULL);
332 s->session->key_arg_length=0;
334 EVP_CipherInit_ex(dd,c,NULL,key,iv,(which & SSL3_CC_WRITE));
336 memset(&(exp_key[0]),0,sizeof(exp_key));
337 memset(&(exp_iv[0]),0,sizeof(exp_iv));
338 EVP_MD_CTX_cleanup(&md);
341 SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE);
346 int ssl3_setup_key_block(SSL *s)
355 if (s->s3->tmp.key_block_length != 0)
358 if (!ssl_cipher_get_evp(s->session,&c,&hash,&comp))
360 SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
364 s->s3->tmp.new_sym_enc=c;
365 s->s3->tmp.new_hash=hash;
366 s->s3->tmp.new_compression=comp;
368 num=EVP_CIPHER_key_length(c)+EVP_MD_size(hash)+EVP_CIPHER_iv_length(c);
371 ssl3_cleanup_key_block(s);
373 if ((p=OPENSSL_malloc(num)) == NULL)
376 s->s3->tmp.key_block_length=num;
377 s->s3->tmp.key_block=p;
379 ret = ssl3_generate_key_block(s,p,num);
381 /* enable vulnerability countermeasure for CBC ciphers with
382 * known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt) */
383 s->s3->need_empty_fragments = 1;
384 #ifndef OPENSSL_NO_RC4
385 if ((s->session->cipher != NULL) && ((s->session->cipher->algorithms & SSL_ENC_MASK) == SSL_RC4))
386 s->s3->need_empty_fragments = 0;
392 SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
396 void ssl3_cleanup_key_block(SSL *s)
398 if (s->s3->tmp.key_block != NULL)
400 memset(s->s3->tmp.key_block,0,
401 s->s3->tmp.key_block_length);
402 OPENSSL_free(s->s3->tmp.key_block);
403 s->s3->tmp.key_block=NULL;
405 s->s3->tmp.key_block_length=0;
408 int ssl3_enc(SSL *s, int send)
414 const EVP_CIPHER *enc;
420 if (s->enc_write_ctx == NULL)
423 enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
429 if (s->enc_read_ctx == NULL)
432 enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
435 if ((s->session == NULL) || (ds == NULL) ||
438 memmove(rec->data,rec->input,rec->length);
439 rec->input=rec->data;
444 bs=EVP_CIPHER_block_size(ds->cipher);
448 if ((bs != 1) && send)
452 /* we need to add 'i-1' padding bytes */
455 rec->input[l-1]=(i-1);
460 if (l == 0 || l%bs != 0)
462 SSLerr(SSL_F_SSL3_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
463 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
468 EVP_Cipher(ds,rec->data,rec->input,l);
470 if ((bs != 1) && !send)
473 /* SSL 3.0 bounds the number of padding bytes by the block size;
474 * padding bytes (except that last) are arbitrary */
477 /* Incorrect padding. SSLerr() and ssl3_alert are done
478 * by caller: we don't want to reveal whether this is
479 * a decryption error or a MAC verification failure
480 * (see http://www.openssl.org/~bodo/tls-cbc.txt) */
489 void ssl3_init_finished_mac(SSL *s)
491 EVP_DigestInit_ex(&(s->s3->finish_dgst1),s->ctx->md5, NULL);
492 EVP_DigestInit_ex(&(s->s3->finish_dgst2),s->ctx->sha1, NULL);
495 void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len)
497 EVP_DigestUpdate(&(s->s3->finish_dgst1),buf,len);
498 EVP_DigestUpdate(&(s->s3->finish_dgst2),buf,len);
501 int ssl3_cert_verify_mac(SSL *s, EVP_MD_CTX *ctx, unsigned char *p)
503 return(ssl3_handshake_mac(s,ctx,NULL,0,p));
506 int ssl3_final_finish_mac(SSL *s, EVP_MD_CTX *ctx1, EVP_MD_CTX *ctx2,
507 const char *sender, int len, unsigned char *p)
511 ret=ssl3_handshake_mac(s,ctx1,sender,len,p);
513 ret+=ssl3_handshake_mac(s,ctx2,sender,len,p);
517 static int ssl3_handshake_mac(SSL *s, EVP_MD_CTX *in_ctx,
518 const char *sender, int len, unsigned char *p)
523 unsigned char md_buf[EVP_MAX_MD_SIZE];
526 EVP_MD_CTX_init(&ctx);
527 EVP_MD_CTX_copy_ex(&ctx,in_ctx);
529 n=EVP_MD_CTX_size(&ctx);
533 EVP_DigestUpdate(&ctx,sender,len);
534 EVP_DigestUpdate(&ctx,s->session->master_key,
535 s->session->master_key_length);
536 EVP_DigestUpdate(&ctx,ssl3_pad_1,npad);
537 EVP_DigestFinal_ex(&ctx,md_buf,&i);
539 EVP_DigestInit_ex(&ctx,EVP_MD_CTX_md(&ctx), NULL);
540 EVP_DigestUpdate(&ctx,s->session->master_key,
541 s->session->master_key_length);
542 EVP_DigestUpdate(&ctx,ssl3_pad_2,npad);
543 EVP_DigestUpdate(&ctx,md_buf,i);
544 EVP_DigestFinal_ex(&ctx,p,&ret);
546 EVP_MD_CTX_cleanup(&ctx);
551 int ssl3_mac(SSL *ssl, unsigned char *md, int send)
554 unsigned char *mac_sec,*seq;
557 unsigned char *p,rec_char;
558 unsigned int md_size;
563 rec= &(ssl->s3->wrec);
564 mac_sec= &(ssl->s3->write_mac_secret[0]);
565 seq= &(ssl->s3->write_sequence[0]);
566 hash=ssl->write_hash;
570 rec= &(ssl->s3->rrec);
571 mac_sec= &(ssl->s3->read_mac_secret[0]);
572 seq= &(ssl->s3->read_sequence[0]);
576 md_size=EVP_MD_size(hash);
577 npad=(48/md_size)*md_size;
579 /* Chop the digest off the end :-) */
580 EVP_MD_CTX_init(&md_ctx);
582 EVP_DigestInit_ex( &md_ctx,hash, NULL);
583 EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
584 EVP_DigestUpdate(&md_ctx,ssl3_pad_1,npad);
585 EVP_DigestUpdate(&md_ctx,seq,8);
587 EVP_DigestUpdate(&md_ctx,&rec_char,1);
590 EVP_DigestUpdate(&md_ctx,md,2);
591 EVP_DigestUpdate(&md_ctx,rec->input,rec->length);
592 EVP_DigestFinal_ex( &md_ctx,md,NULL);
594 EVP_DigestInit_ex( &md_ctx,hash, NULL);
595 EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
596 EVP_DigestUpdate(&md_ctx,ssl3_pad_2,npad);
597 EVP_DigestUpdate(&md_ctx,md,md_size);
598 EVP_DigestFinal_ex( &md_ctx,md,&md_size);
600 EVP_MD_CTX_cleanup(&md_ctx);
605 if (seq[i] != 0) break;
611 int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
614 static const unsigned char *salt[3]={
615 #ifndef CHARSET_EBCDIC
616 (const unsigned char *)"A",
617 (const unsigned char *)"BB",
618 (const unsigned char *)"CCC",
620 (const unsigned char *)"\x41",
621 (const unsigned char *)"\x42\x42",
622 (const unsigned char *)"\x43\x43\x43",
625 unsigned char buf[EVP_MAX_MD_SIZE];
630 EVP_MD_CTX_init(&ctx);
633 EVP_DigestInit_ex(&ctx,s->ctx->sha1, NULL);
634 EVP_DigestUpdate(&ctx,salt[i],strlen((const char *)salt[i]));
635 EVP_DigestUpdate(&ctx,p,len);
636 EVP_DigestUpdate(&ctx,&(s->s3->client_random[0]),
638 EVP_DigestUpdate(&ctx,&(s->s3->server_random[0]),
640 EVP_DigestFinal_ex(&ctx,buf,&n);
642 EVP_DigestInit_ex(&ctx,s->ctx->md5, NULL);
643 EVP_DigestUpdate(&ctx,p,len);
644 EVP_DigestUpdate(&ctx,buf,n);
645 EVP_DigestFinal_ex(&ctx,out,&n);
649 EVP_MD_CTX_cleanup(&ctx);
653 int ssl3_alert_code(int code)
657 case SSL_AD_CLOSE_NOTIFY: return(SSL3_AD_CLOSE_NOTIFY);
658 case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE);
659 case SSL_AD_BAD_RECORD_MAC: return(SSL3_AD_BAD_RECORD_MAC);
660 case SSL_AD_DECRYPTION_FAILED: return(SSL3_AD_BAD_RECORD_MAC);
661 case SSL_AD_RECORD_OVERFLOW: return(SSL3_AD_BAD_RECORD_MAC);
662 case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE);
663 case SSL_AD_HANDSHAKE_FAILURE: return(SSL3_AD_HANDSHAKE_FAILURE);
664 case SSL_AD_NO_CERTIFICATE: return(SSL3_AD_NO_CERTIFICATE);
665 case SSL_AD_BAD_CERTIFICATE: return(SSL3_AD_BAD_CERTIFICATE);
666 case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE);
667 case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED);
668 case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED);
669 case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN);
670 case SSL_AD_ILLEGAL_PARAMETER: return(SSL3_AD_ILLEGAL_PARAMETER);
671 case SSL_AD_UNKNOWN_CA: return(SSL3_AD_BAD_CERTIFICATE);
672 case SSL_AD_ACCESS_DENIED: return(SSL3_AD_HANDSHAKE_FAILURE);
673 case SSL_AD_DECODE_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
674 case SSL_AD_DECRYPT_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
675 case SSL_AD_EXPORT_RESTRICTION: return(SSL3_AD_HANDSHAKE_FAILURE);
676 case SSL_AD_PROTOCOL_VERSION: return(SSL3_AD_HANDSHAKE_FAILURE);
677 case SSL_AD_INSUFFICIENT_SECURITY:return(SSL3_AD_HANDSHAKE_FAILURE);
678 case SSL_AD_INTERNAL_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
679 case SSL_AD_USER_CANCELLED: return(SSL3_AD_HANDSHAKE_FAILURE);
680 case SSL_AD_NO_RENEGOTIATION: return(-1); /* Don't send it :-) */