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.]
60 #include <openssl/comp.h>
61 #include <openssl/evp.h>
62 #include <openssl/hmac.h>
64 #include <openssl/md5.h>
66 static void tls1_P_hash(const EVP_MD *md, const unsigned char *sec,
67 int sec_len, unsigned char *seed, int seed_len,
68 unsigned char *out, int olen)
74 unsigned char A1[HMAC_MAX_MD_CBLOCK];
77 chunk=EVP_MD_size(md);
80 HMAC_CTX_init(&ctx_tmp);
81 HMAC_Init(&ctx,sec,sec_len,md);
82 HMAC_Init(&ctx_tmp,sec,sec_len,md);
83 HMAC_Update(&ctx,seed,seed_len);
84 HMAC_Final(&ctx,A1,&A1_len);
89 HMAC_Init(&ctx,NULL,0,NULL); /* re-init */
90 HMAC_Init(&ctx_tmp,NULL,0,NULL); /* re-init */
91 HMAC_Update(&ctx,A1,A1_len);
92 HMAC_Update(&ctx_tmp,A1,A1_len);
93 HMAC_Update(&ctx,seed,seed_len);
97 HMAC_Final(&ctx,out,&j);
100 HMAC_Final(&ctx_tmp,A1,&A1_len); /* calc the next A1 value */
104 HMAC_Final(&ctx,A1,&A1_len);
109 HMAC_CTX_cleanup(&ctx);
110 HMAC_CTX_cleanup(&ctx_tmp);
111 memset(A1,0,sizeof(A1));
114 static void tls1_PRF(const EVP_MD *md5, const EVP_MD *sha1,
115 unsigned char *label, int label_len,
116 const unsigned char *sec, int slen, unsigned char *out1,
117 unsigned char *out2, int olen)
120 const unsigned char *S1,*S2;
125 len+=(slen&1); /* add for odd, make longer */
128 tls1_P_hash(md5 ,S1,len,label,label_len,out1,olen);
129 tls1_P_hash(sha1,S2,len,label,label_len,out2,olen);
131 for (i=0; i<olen; i++)
135 static void tls1_generate_key_block(SSL *s, unsigned char *km,
136 unsigned char *tmp, int num)
139 unsigned char buf[SSL3_RANDOM_SIZE*2+
140 TLS_MD_MAX_CONST_SIZE];
143 memcpy(p,TLS_MD_KEY_EXPANSION_CONST,
144 TLS_MD_KEY_EXPANSION_CONST_SIZE);
145 p+=TLS_MD_KEY_EXPANSION_CONST_SIZE;
146 memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE);
148 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
151 tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,(int)(p-buf),
152 s->session->master_key,s->session->master_key_length,
155 printf("tls1_generate_key_block() ==> %d byte master_key =\n\t",
156 s->session->master_key_length);
159 for (i=0; i < s->session->master_key_length; i++)
161 printf("%02X", s->session->master_key[i]);
164 #endif /* KSSL_DEBUG */
167 int tls1_change_cipher_state(SSL *s, int which)
169 static const unsigned char empty[]="";
170 unsigned char *p,*key_block,*mac_secret;
171 unsigned char *exp_label,buf[TLS_MD_MAX_CONST_SIZE+
173 unsigned char tmp1[EVP_MAX_KEY_LENGTH];
174 unsigned char tmp2[EVP_MAX_KEY_LENGTH];
175 unsigned char iv1[EVP_MAX_IV_LENGTH*2];
176 unsigned char iv2[EVP_MAX_IV_LENGTH*2];
177 unsigned char *ms,*key,*iv,*er1,*er2;
181 const SSL_COMP *comp;
183 int _exp,n,i,j,k,exp_label_len,cl;
185 _exp=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
186 c=s->s3->tmp.new_sym_enc;
187 m=s->s3->tmp.new_hash;
188 comp=s->s3->tmp.new_compression;
189 key_block=s->s3->tmp.key_block;
192 printf("tls1_change_cipher_state(which= %d) w/\n", which);
193 printf("\talg= %ld, comp= %p\n", s->s3->tmp.new_cipher->algorithms,
195 printf("\tevp_cipher == %p ==? &d_cbc_ede_cipher3\n", c);
196 printf("\tevp_cipher: nid, blksz= %d, %d, keylen=%d, ivlen=%d\n",
197 c->nid,c->block_size,c->key_len,c->iv_len);
198 printf("\tkey_block: len= %d, data= ", s->s3->tmp.key_block_length);
201 for (i=0; i<s->s3->tmp.key_block_length; i++)
202 printf("%02x", key_block[i]); printf("\n");
204 #endif /* KSSL_DEBUG */
206 if (which & SSL3_CC_READ)
208 if ((s->enc_read_ctx == NULL) &&
209 ((s->enc_read_ctx=(EVP_CIPHER_CTX *)
210 OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
214 if (s->expand != NULL)
216 COMP_CTX_free(s->expand);
221 s->expand=COMP_CTX_new(comp->method);
222 if (s->expand == NULL)
224 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
227 if (s->s3->rrec.comp == NULL)
228 s->s3->rrec.comp=(unsigned char *)
229 OPENSSL_malloc(SSL3_RT_MAX_ENCRYPTED_LENGTH);
230 if (s->s3->rrec.comp == NULL)
233 memset(&(s->s3->read_sequence[0]),0,8);
234 mac_secret= &(s->s3->read_mac_secret[0]);
238 if ((s->enc_write_ctx == NULL) &&
239 ((s->enc_write_ctx=(EVP_CIPHER_CTX *)
240 OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
242 dd= s->enc_write_ctx;
244 if (s->compress != NULL)
246 COMP_CTX_free(s->compress);
251 s->compress=COMP_CTX_new(comp->method);
252 if (s->compress == NULL)
254 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
258 memset(&(s->s3->write_sequence[0]),0,8);
259 mac_secret= &(s->s3->write_mac_secret[0]);
262 EVP_CIPHER_CTX_init(dd);
264 p=s->s3->tmp.key_block;
266 cl=EVP_CIPHER_key_length(c);
267 j=_exp ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
268 cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
269 /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
270 k=EVP_CIPHER_iv_length(c);
271 er1= &(s->s3->client_random[0]);
272 er2= &(s->s3->server_random[0]);
273 if ( (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
274 (which == SSL3_CHANGE_CIPHER_SERVER_READ))
277 key= &(p[ n]); n+=j+j;
278 iv= &(p[ n]); n+=k+k;
279 exp_label=(unsigned char *)TLS_MD_CLIENT_WRITE_KEY_CONST;
280 exp_label_len=TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE;
286 ms= &(p[ n]); n+=i+j;
287 key= &(p[ n]); n+=j+k;
289 exp_label=(unsigned char *)TLS_MD_SERVER_WRITE_KEY_CONST;
290 exp_label_len=TLS_MD_SERVER_WRITE_KEY_CONST_SIZE;
294 if (n > s->s3->tmp.key_block_length)
296 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_INTERNAL_ERROR);
300 memcpy(mac_secret,ms,i);
302 printf("which = %04X\nmac key=",which);
303 { int z; for (z=0; z<i; z++) printf("%02X%c",ms[z],((z+1)%16)?' ':'\n'); }
307 /* In here I set both the read and write key/iv to the
308 * same value since only the correct one will be used :-).
311 memcpy(p,exp_label,exp_label_len);
313 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
315 memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE);
317 tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,(int)(p-buf),key,j,
318 tmp1,tmp2,EVP_CIPHER_key_length(c));
324 memcpy(p,TLS_MD_IV_BLOCK_CONST,
325 TLS_MD_IV_BLOCK_CONST_SIZE);
326 p+=TLS_MD_IV_BLOCK_CONST_SIZE;
327 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
329 memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE);
331 tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,p-buf,empty,0,
340 s->session->key_arg_length=0;
344 printf("EVP_CipherInit(dd,c,key=,iv=,which)\n");
345 printf("\tkey= "); for (i=0; i<c->key_len; i++) printf("%02x", key[i]);
347 printf("\t iv= "); for (i=0; i<c->iv_len; i++) printf("%02x", iv[i]);
350 #endif /* KSSL_DEBUG */
352 EVP_CipherInit(dd,c,key,iv,(which & SSL3_CC_WRITE));
354 printf("which = %04X\nkey=",which);
355 { int z; for (z=0; z<EVP_CIPHER_key_length(c); z++) printf("%02X%c",key[z],((z+1)%16)?' ':'\n'); }
357 { int z; for (z=0; z<k; z++) printf("%02X%c",iv[z],((z+1)%16)?' ':'\n'); }
361 memset(tmp1,0,sizeof(tmp1));
362 memset(tmp2,0,sizeof(tmp1));
363 memset(iv1,0,sizeof(iv1));
364 memset(iv2,0,sizeof(iv2));
367 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE);
372 int tls1_setup_key_block(SSL *s)
374 unsigned char *p1,*p2;
381 printf ("tls1_setup_key_block()\n");
382 #endif /* KSSL_DEBUG */
384 if (s->s3->tmp.key_block_length != 0)
387 if (!ssl_cipher_get_evp(s->session,&c,&hash,&comp))
389 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
393 s->s3->tmp.new_sym_enc=c;
394 s->s3->tmp.new_hash=hash;
396 num=EVP_CIPHER_key_length(c)+EVP_MD_size(hash)+EVP_CIPHER_iv_length(c);
399 ssl3_cleanup_key_block(s);
401 if ((p1=(unsigned char *)OPENSSL_malloc(num)) == NULL)
403 if ((p2=(unsigned char *)OPENSSL_malloc(num)) == NULL)
406 s->s3->tmp.key_block_length=num;
407 s->s3->tmp.key_block=p1;
411 printf("client random\n");
412 { int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->client_random[z],((z+1)%16)?' ':'\n'); }
413 printf("server random\n");
414 { int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->server_random[z],((z+1)%16)?' ':'\n'); }
415 printf("pre-master\n");
416 { int z; for (z=0; z<s->session->master_key_length; z++) printf("%02X%c",s->session->master_key[z],((z+1)%16)?' ':'\n'); }
418 tls1_generate_key_block(s,p1,p2,num);
422 printf("\nkey block\n");
423 { int z; for (z=0; z<num; z++) printf("%02X%c",p1[z],((z+1)%16)?' ':'\n'); }
428 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
432 int tls1_enc(SSL *s, int send)
438 const EVP_CIPHER *enc;
442 if (s->write_hash != NULL)
443 n=EVP_MD_size(s->write_hash);
446 if (s->enc_write_ctx == NULL)
449 enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
453 if (s->read_hash != NULL)
454 n=EVP_MD_size(s->read_hash);
457 if (s->enc_read_ctx == NULL)
460 enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
464 printf("tls1_enc(%d)\n", send);
465 #endif /* KSSL_DEBUG */
467 if ((s->session == NULL) || (ds == NULL) ||
470 memmove(rec->data,rec->input,rec->length);
471 rec->input=rec->data;
476 bs=EVP_CIPHER_block_size(ds->cipher);
478 if ((bs != 1) && send)
482 /* Add weird padding of upto 256 bytes */
484 /* we need to add 'i' padding bytes of value j */
486 if (s->options & SSL_OP_TLS_BLOCK_PADDING_BUG)
488 if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
491 for (k=(int)l; k<(int)(l+i); k++)
500 printf("EVP_Cipher(ds=%p,rec->data=%p,rec->input=%p,l=%ld) ==>\n",
501 ds,rec->data,rec->input,l);
502 printf("\tEVP_CIPHER_CTX: %d buf_len, %d key_len [%d %d], %d iv_len\n",
503 ds->buf_len, ds->cipher->key_len,
504 DES_KEY_SZ, DES_SCHEDULE_SZ,
507 for (i=0; i<ds->cipher->iv_len; i++) printf("%02X", ds->iv[i]);
509 printf("\trec->input=");
510 for (ui=0; ui<l; ui++) printf(" %02x", rec->input[ui]);
513 #endif /* KSSL_DEBUG */
517 if (l == 0 || l%bs != 0)
519 SSLerr(SSL_F_TLS1_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
520 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPT_ERROR);
525 EVP_Cipher(ds,rec->data,rec->input,l);
530 printf("\trec->data=");
532 printf(" %02x", rec->data[i]); printf("\n");
534 #endif /* KSSL_DEBUG */
536 if ((bs != 1) && !send)
538 ii=i=rec->data[l-1]; /* padding_length */
540 if (s->options&SSL_OP_TLS_BLOCK_PADDING_BUG)
542 /* First packet is even in size, so check */
543 if ((memcmp(s->s3->read_sequence,
544 "\0\0\0\0\0\0\0\0",8) == 0) && !(ii & 1))
545 s->s3->flags|=TLS1_FLAGS_TLS_PADDING_BUG;
546 if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
549 /* TLS 1.0 does not bound the number of padding bytes by the block size.
550 * All of them must have value 'padding_length'. */
551 if (i > (int)rec->length)
553 SSLerr(SSL_F_TLS1_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
554 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
557 for (j=(int)(l-i); j<(int)l; j++)
559 if (rec->data[j] != ii)
561 SSLerr(SSL_F_TLS1_ENC,SSL_R_DECRYPTION_FAILED);
562 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
572 int tls1_cert_verify_mac(SSL *s, EVP_MD_CTX *in_ctx, unsigned char *out)
577 EVP_MD_CTX_init(&ctx);
578 EVP_MD_CTX_copy(&ctx,in_ctx);
579 EVP_DigestFinal(&ctx,out,&ret);
580 EVP_MD_CTX_cleanup(&ctx);
584 int tls1_final_finish_mac(SSL *s, EVP_MD_CTX *in1_ctx, EVP_MD_CTX *in2_ctx,
585 const char *str, int slen, unsigned char *out)
589 unsigned char buf[TLS_MD_MAX_CONST_SIZE+MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
590 unsigned char *q,buf2[12];
596 EVP_MD_CTX_init(&ctx);
597 EVP_MD_CTX_copy(&ctx,in1_ctx);
598 EVP_DigestFinal(&ctx,q,&i);
600 EVP_MD_CTX_copy(&ctx,in2_ctx);
601 EVP_DigestFinal(&ctx,q,&i);
604 tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,(int)(q-buf),
605 s->session->master_key,s->session->master_key_length,
607 EVP_MD_CTX_cleanup(&ctx);
612 int tls1_mac(SSL *ssl, unsigned char *md, int send)
615 unsigned char *mac_sec,*seq;
617 unsigned int md_size;
620 unsigned char buf[5];
624 rec= &(ssl->s3->wrec);
625 mac_sec= &(ssl->s3->write_mac_secret[0]);
626 seq= &(ssl->s3->write_sequence[0]);
627 hash=ssl->write_hash;
631 rec= &(ssl->s3->rrec);
632 mac_sec= &(ssl->s3->read_mac_secret[0]);
633 seq= &(ssl->s3->read_sequence[0]);
637 md_size=EVP_MD_size(hash);
640 buf[1]=TLS1_VERSION_MAJOR;
641 buf[2]=TLS1_VERSION_MINOR;
642 buf[3]=rec->length>>8;
643 buf[4]=rec->length&0xff;
645 /* I should fix this up TLS TLS TLS TLS TLS XXXXXXXX */
646 HMAC_CTX_init(&hmac);
647 HMAC_Init(&hmac,mac_sec,EVP_MD_size(hash),hash);
648 HMAC_Update(&hmac,seq,8);
649 HMAC_Update(&hmac,buf,5);
650 HMAC_Update(&hmac,rec->input,rec->length);
651 HMAC_Final(&hmac,md,&md_size);
652 HMAC_CTX_cleanup(&hmac);
656 {unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",mac_sec[z]); printf("\n"); }
658 {int z; for (z=0; z<8; z++) printf("%02X ",seq[z]); printf("\n"); }
660 {int z; for (z=0; z<5; z++) printf("%02X ",buf[z]); printf("\n"); }
662 {unsigned int z; for (z=0; z<rec->length; z++) printf("%02X ",buf[z]); printf("\n"); }
668 if (seq[i] != 0) break;
672 {unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",md[z]); printf("\n"); }
677 int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
680 unsigned char buf[SSL3_RANDOM_SIZE*2+TLS_MD_MASTER_SECRET_CONST_SIZE];
681 unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH];
684 printf ("tls1_generate_master_secret(%p,%p, %p, %d)\n", s,out, p,len);
685 #endif /* KSSL_DEBUG */
687 /* Setup the stuff to munge */
688 memcpy(buf,TLS_MD_MASTER_SECRET_CONST,
689 TLS_MD_MASTER_SECRET_CONST_SIZE);
690 memcpy(&(buf[TLS_MD_MASTER_SECRET_CONST_SIZE]),
691 s->s3->client_random,SSL3_RANDOM_SIZE);
692 memcpy(&(buf[SSL3_RANDOM_SIZE+TLS_MD_MASTER_SECRET_CONST_SIZE]),
693 s->s3->server_random,SSL3_RANDOM_SIZE);
694 tls1_PRF(s->ctx->md5,s->ctx->sha1,
695 buf,TLS_MD_MASTER_SECRET_CONST_SIZE+SSL3_RANDOM_SIZE*2,p,len,
696 s->session->master_key,buff,SSL3_MASTER_SECRET_SIZE);
698 printf ("tls1_generate_master_secret() complete\n");
699 #endif /* KSSL_DEBUG */
700 return(SSL3_MASTER_SECRET_SIZE);
703 int tls1_alert_code(int code)
707 case SSL_AD_CLOSE_NOTIFY: return(SSL3_AD_CLOSE_NOTIFY);
708 case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE);
709 case SSL_AD_BAD_RECORD_MAC: return(SSL3_AD_BAD_RECORD_MAC);
710 case SSL_AD_DECRYPTION_FAILED: return(TLS1_AD_DECRYPTION_FAILED);
711 case SSL_AD_RECORD_OVERFLOW: return(TLS1_AD_RECORD_OVERFLOW);
712 case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE);
713 case SSL_AD_HANDSHAKE_FAILURE: return(SSL3_AD_HANDSHAKE_FAILURE);
714 case SSL_AD_NO_CERTIFICATE: return(-1);
715 case SSL_AD_BAD_CERTIFICATE: return(SSL3_AD_BAD_CERTIFICATE);
716 case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE);
717 case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED);
718 case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED);
719 case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN);
720 case SSL_AD_ILLEGAL_PARAMETER: return(SSL3_AD_ILLEGAL_PARAMETER);
721 case SSL_AD_UNKNOWN_CA: return(TLS1_AD_UNKNOWN_CA);
722 case SSL_AD_ACCESS_DENIED: return(TLS1_AD_ACCESS_DENIED);
723 case SSL_AD_DECODE_ERROR: return(TLS1_AD_DECODE_ERROR);
724 case SSL_AD_DECRYPT_ERROR: return(TLS1_AD_DECRYPT_ERROR);
725 case SSL_AD_EXPORT_RESTRICTION: return(TLS1_AD_EXPORT_RESTRICTION);
726 case SSL_AD_PROTOCOL_VERSION: return(TLS1_AD_PROTOCOL_VERSION);
727 case SSL_AD_INSUFFICIENT_SECURITY:return(TLS1_AD_INSUFFICIENT_SECURITY);
728 case SSL_AD_INTERNAL_ERROR: return(TLS1_AD_INTERNAL_ERROR);
729 case SSL_AD_USER_CANCELLED: return(TLS1_AD_USER_CANCELLED);
730 case SSL_AD_NO_RENEGOTIATION: return(TLS1_AD_NO_RENEGOTIATION);