ssl/t1_enc.c

   1 /* ssl/t1_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  * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
  60  *
  61  * Redistribution and use in source and binary forms, with or without
  62  * modification, are permitted provided that the following conditions
  63  * are met:
  64  *
  65  * 1. Redistributions of source code must retain the above copyright
  66  *    notice, this list of conditions and the following disclaimer.
  67  *
  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
  71  *    distribution.
  72  *
  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/)"
  77  *
  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.
  82  *
  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.
  86  *
  87  * 6. Redistributions of any form whatsoever must retain the following
  88  *    acknowledgment:
  89  *    "This product includes software developed by the OpenSSL Project
  90  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  91  *
  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  * ====================================================================
 105  *
 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).
 109  *
 110  */
 111 /* ====================================================================
 112  * Copyright 2005 Nokia. All rights reserved.
 113  *
 114  * The portions of the attached software ("Contribution") is developed by
 115  * Nokia Corporation and is licensed pursuant to the OpenSSL open source
 116  * license.
 117  *
 118  * The Contribution, originally written by Mika Kousa and Pasi Eronen of
 119  * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
 120  * support (see RFC 4279) to OpenSSL.
 121  *
 122  * No patent licenses or other rights except those expressly stated in
 123  * the OpenSSL open source license shall be deemed granted or received
 124  * expressly, by implication, estoppel, or otherwise.
 125  *
 126  * No assurances are provided by Nokia that the Contribution does not
 127  * infringe the patent or other intellectual property rights of any third
 128  * party or that the license provides you with all the necessary rights
 129  * to make use of the Contribution.
 130  *
 131  * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
 132  * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
 133  * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
 134  * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
 135  * OTHERWISE.
 136  */
 137
 138 #include <stdio.h>
 139 #include "ssl_locl.h"
 140 #ifndef OPENSSL_NO_COMP
 141 #include <openssl/comp.h>
 142 #endif
 143 #include <openssl/evp.h>
 144 #include <openssl/hmac.h>
 145 #include <openssl/md5.h>
 146 #include <openssl/rand.h>
 147 #ifdef KSSL_DEBUG
 148 #include <openssl/des.h>
 149 #endif
 150
 151 /* seed1 through seed5 are virtually concatenated */
 152 static int tls1_P_hash(const EVP_MD *md, const unsigned char *sec,
 153                         int sec_len,
 154                         const void *seed1, int seed1_len,
 155                         const void *seed2, int seed2_len,
 156                         const void *seed3, int seed3_len,
 157                         const void *seed4, int seed4_len,
 158                         const void *seed5, int seed5_len,
 159                         unsigned char *out, int olen)
 160         {
 161         int chunk;
 162         size_t j;
 163         EVP_MD_CTX ctx, ctx_tmp;
 164         EVP_PKEY *mac_key;
 165         unsigned char A1[EVP_MAX_MD_SIZE];
 166         size_t A1_len;
 167         int ret = 0;
 168
 169         chunk=EVP_MD_size(md);
 170         OPENSSL_assert(chunk >= 0);
 171
 172         EVP_MD_CTX_init(&ctx);
 173         EVP_MD_CTX_init(&ctx_tmp);
 174         mac_key = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL, sec, sec_len);
 175         if (!mac_key)
 176                 goto err;
 177         if (!EVP_DigestSignInit(&ctx,NULL,md, NULL, mac_key))
 178                 goto err;
 179         if (!EVP_DigestSignInit(&ctx_tmp,NULL,md, NULL, mac_key))
 180                 goto err;
 181         if (seed1 && !EVP_DigestSignUpdate(&ctx,seed1,seed1_len))
 182                 goto err;
 183         if (seed2 && !EVP_DigestSignUpdate(&ctx,seed2,seed2_len))
 184                 goto err;
 185         if (seed3 && !EVP_DigestSignUpdate(&ctx,seed3,seed3_len))
 186                 goto err;
 187         if (seed4 && !EVP_DigestSignUpdate(&ctx,seed4,seed4_len))
 188                 goto err;
 189         if (seed5 && !EVP_DigestSignUpdate(&ctx,seed5,seed5_len))
 190                 goto err;
 191         if (!EVP_DigestSignFinal(&ctx,A1,&A1_len))
 192                 goto err;
 193
 194         for (;;)
 195                 {
 196                 /* Reinit mac contexts */
 197                 if (!EVP_DigestSignInit(&ctx,NULL,md, NULL, mac_key))
 198                         goto err;
 199                 if (!EVP_DigestSignInit(&ctx_tmp,NULL,md, NULL, mac_key))
 200                         goto err;
 201                 if (!EVP_DigestSignUpdate(&ctx,A1,A1_len))
 202                         goto err;
 203                 if (!EVP_DigestSignUpdate(&ctx_tmp,A1,A1_len))
 204                         goto err;
 205                 if (seed1 && !EVP_DigestSignUpdate(&ctx,seed1,seed1_len))
 206                         goto err;
 207                 if (seed2 && !EVP_DigestSignUpdate(&ctx,seed2,seed2_len))
 208                         goto err;
 209                 if (seed3 && !EVP_DigestSignUpdate(&ctx,seed3,seed3_len))
 210                         goto err;
 211                 if (seed4 && !EVP_DigestSignUpdate(&ctx,seed4,seed4_len))
 212                         goto err;
 213                 if (seed5 && !EVP_DigestSignUpdate(&ctx,seed5,seed5_len))
 214                         goto err;
 215
 216                 if (olen > chunk)
 217                         {
 218                         if (!EVP_DigestSignFinal(&ctx,out,&j))
 219                                 goto err;
 220                         out+=j;
 221                         olen-=j;
 222                         /* calc the next A1 value */
 223                         if (!EVP_DigestSignFinal(&ctx_tmp,A1,&A1_len))
 224                                 goto err;
 225                         }
 226                 else    /* last one */
 227                         {
 228                         if (!EVP_DigestSignFinal(&ctx,A1,&A1_len))
 229                                 goto err;
 230                         memcpy(out,A1,olen);
 231                         break;
 232                         }
 233                 }
 234         ret = 1;
 235 err:
 236         EVP_PKEY_free(mac_key);
 237         EVP_MD_CTX_cleanup(&ctx);
 238         EVP_MD_CTX_cleanup(&ctx_tmp);
 239         OPENSSL_cleanse(A1,sizeof(A1));
 240         return ret;
 241         }
 242
 243 /* seed1 through seed5 are virtually concatenated */
 244 static int tls1_PRF(long digest_mask,
 245                      const void *seed1, int seed1_len,
 246                      const void *seed2, int seed2_len,
 247                      const void *seed3, int seed3_len,
 248                      const void *seed4, int seed4_len,
 249                      const void *seed5, int seed5_len,
 250                      const unsigned char *sec, int slen,
 251                      unsigned char *out1,
 252                      unsigned char *out2, int olen)
 253         {
 254         int len,i,idx,count;
 255         const unsigned char *S1;
 256         long m;
 257         const EVP_MD *md;
 258         int ret = 0;
 259
 260         /* Count number of digests and partition sec evenly */
 261         count=0;
 262         for (idx=0;ssl_get_handshake_digest(idx,&m,&md);idx++) {
 263                 if ((m<<TLS1_PRF_DGST_SHIFT) & digest_mask) count++;
 264         }
 265         len=slen/count;
 266         S1=sec;
 267         memset(out1,0,olen);
 268         for (idx=0;ssl_get_handshake_digest(idx,&m,&md);idx++) {
 269                 if ((m<<TLS1_PRF_DGST_SHIFT) & digest_mask) {
 270                         if (!md) {
 271                                 SSLerr(SSL_F_TLS1_PRF,
 272                                 SSL_R_UNSUPPORTED_DIGEST_TYPE);
 273                                 goto err;
 274                         }
 275                         if (!tls1_P_hash(md ,S1,len+(slen&1),
 276                                         seed1,seed1_len,seed2,seed2_len,seed3,seed3_len,seed4,seed4_len,seed5,seed5_len,
 277                                         out2,olen))
 278                                 goto err;
 279                         S1+=len;
 280                         for (i=0; i<olen; i++)
 281                         {
 282                                 out1[i]^=out2[i];
 283                         }
 284                 }
 285         }
 286         ret = 1;
 287 err:
 288         return ret;
 289 }
 290 static int tls1_generate_key_block(SSL *s, unsigned char *km,
 291              unsigned char *tmp, int num)
 292         {
 293         int ret;
 294         ret = tls1_PRF(s->s3->tmp.new_cipher->algorithm2,
 295                  TLS_MD_KEY_EXPANSION_CONST,TLS_MD_KEY_EXPANSION_CONST_SIZE,
 296                  s->s3->server_random,SSL3_RANDOM_SIZE,
 297                  s->s3->client_random,SSL3_RANDOM_SIZE,
 298                  NULL,0,NULL,0,
 299                  s->session->master_key,s->session->master_key_length,
 300                  km,tmp,num);
 301 #ifdef KSSL_DEBUG
 302         printf("tls1_generate_key_block() ==> %d byte master_key =\n\t",
 303                 s->session->master_key_length);
 304         {
 305         int i;
 306         for (i=0; i < s->session->master_key_length; i++)
 307                 {
 308                 printf("%02X", s->session->master_key[i]);
 309                 }
 310         printf("\n");  }
 311 #endif    /* KSSL_DEBUG */
 312         return ret;
 313         }
 314
 315 int tls1_change_cipher_state(SSL *s, int which)
 316         {
 317         static const unsigned char empty[]="";
 318         unsigned char *p,*mac_secret;
 319         unsigned char *exp_label;
 320         unsigned char tmp1[EVP_MAX_KEY_LENGTH];
 321         unsigned char tmp2[EVP_MAX_KEY_LENGTH];
 322         unsigned char iv1[EVP_MAX_IV_LENGTH*2];
 323         unsigned char iv2[EVP_MAX_IV_LENGTH*2];
 324         unsigned char *ms,*key,*iv;
 325         int client_write;
 326         EVP_CIPHER_CTX *dd;
 327         const EVP_CIPHER *c;
 328 #ifndef OPENSSL_NO_COMP
 329         const SSL_COMP *comp;
 330 #endif
 331         const EVP_MD *m;
 332         int mac_type;
 333         int *mac_secret_size;
 334         EVP_MD_CTX *mac_ctx;
 335         EVP_PKEY *mac_key;
 336         int is_export,n,i,j,k,exp_label_len,cl;
 337         int reuse_dd = 0;
 338
 339         is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
 340         c=s->s3->tmp.new_sym_enc;
 341         m=s->s3->tmp.new_hash;
 342         mac_type = s->s3->tmp.new_mac_pkey_type;
 343 #ifndef OPENSSL_NO_COMP
 344         comp=s->s3->tmp.new_compression;
 345 #endif
 346
 347 #ifdef KSSL_DEBUG
 348         printf("tls1_change_cipher_state(which= %d) w/\n", which);
 349         printf("\talg= %ld/%ld, comp= %p\n",
 350                s->s3->tmp.new_cipher->algorithm_mkey,
 351                s->s3->tmp.new_cipher->algorithm_auth,
 352                comp);
 353         printf("\tevp_cipher == %p ==? &d_cbc_ede_cipher3\n", c);
 354         printf("\tevp_cipher: nid, blksz= %d, %d, keylen=%d, ivlen=%d\n",
 355                 c->nid,c->block_size,c->key_len,c->iv_len);
 356         printf("\tkey_block: len= %d, data= ", s->s3->tmp.key_block_length);
 357         {
 358         int i;
 359         for (i=0; i<s->s3->tmp.key_block_length; i++)
 360                 printf("%02x", key_block[i]);  printf("\n");
 361         }
 362 #endif  /* KSSL_DEBUG */
 363
 364         if (which & SSL3_CC_READ)
 365                 {
 366                 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
 367                         s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM;
 368                         else
 369                         s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM;
 370
 371                 if (s->enc_read_ctx != NULL)
 372                         reuse_dd = 1;
 373                 else if ((s->enc_read_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
 374                         goto err;
 375                 else
 376                         /* make sure it's intialized in case we exit later with an error */
 377                         EVP_CIPHER_CTX_init(s->enc_read_ctx);
 378                 dd= s->enc_read_ctx;
 379                 mac_ctx=ssl_replace_hash(&s->read_hash,NULL);
 380 #ifndef OPENSSL_NO_COMP
 381                 if (s->expand != NULL)
 382                         {
 383                         COMP_CTX_free(s->expand);
 384                         s->expand=NULL;
 385                         }
 386                 if (comp != NULL)
 387                         {
 388                         s->expand=COMP_CTX_new(comp->method);
 389                         if (s->expand == NULL)
 390                                 {
 391                                 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
 392                                 goto err2;
 393                                 }
 394                         if (s->s3->rrec.comp == NULL)
 395                                 s->s3->rrec.comp=(unsigned char *)
 396                                         OPENSSL_malloc(SSL3_RT_MAX_ENCRYPTED_LENGTH);
 397                         if (s->s3->rrec.comp == NULL)
 398                                 goto err;
 399                         }
 400 #endif
 401                 /* this is done by dtls1_reset_seq_numbers for DTLS1_VERSION */
 402                 if (s->version != DTLS1_VERSION)
 403                         memset(&(s->s3->read_sequence[0]),0,8);
 404                 mac_secret= &(s->s3->read_mac_secret[0]);
 405                 mac_secret_size=&(s->s3->read_mac_secret_size);
 406                 }
 407         else
 408                 {
 409                 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
 410                         s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM;
 411                         else
 412                         s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM;
 413                 if (s->enc_write_ctx != NULL)
 414                         reuse_dd = 1;
 415                 else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
 416                         goto err;
 417                 else
 418                         /* make sure it's intialized in case we exit later with an error */
 419                         EVP_CIPHER_CTX_init(s->enc_write_ctx);
 420                 dd= s->enc_write_ctx;
 421                 mac_ctx = ssl_replace_hash(&s->write_hash,NULL);
 422 #ifndef OPENSSL_NO_COMP
 423                 if (s->compress != NULL)
 424                         {
 425                         COMP_CTX_free(s->compress);
 426                         s->compress=NULL;
 427                         }
 428                 if (comp != NULL)
 429                         {
 430                         s->compress=COMP_CTX_new(comp->method);
 431                         if (s->compress == NULL)
 432                                 {
 433                                 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
 434                                 goto err2;
 435                                 }
 436                         }
 437 #endif
 438                 /* this is done by dtls1_reset_seq_numbers for DTLS1_VERSION */
 439                 if (s->version != DTLS1_VERSION)
 440                         memset(&(s->s3->write_sequence[0]),0,8);
 441                 mac_secret= &(s->s3->write_mac_secret[0]);
 442                 mac_secret_size = &(s->s3->write_mac_secret_size);
 443                 }
 444
 445         if (reuse_dd)
 446                 EVP_CIPHER_CTX_cleanup(dd);
 447
 448         p=s->s3->tmp.key_block;
 449         i=*mac_secret_size=s->s3->tmp.new_mac_secret_size;
 450
 451         cl=EVP_CIPHER_key_length(c);
 452         j=is_export ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
 453                        cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
 454         /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
 455         k=EVP_CIPHER_iv_length(c);
 456         if (    (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
 457                 (which == SSL3_CHANGE_CIPHER_SERVER_READ))
 458                 {
 459                 ms=  &(p[ 0]); n=i+i;
 460                 key= &(p[ n]); n+=j+j;
 461                 iv=  &(p[ n]); n+=k+k;
 462                 exp_label=(unsigned char *)TLS_MD_CLIENT_WRITE_KEY_CONST;
 463                 exp_label_len=TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE;
 464                 client_write=1;
 465                 }
 466         else
 467                 {
 468                 n=i;
 469                 ms=  &(p[ n]); n+=i+j;
 470                 key= &(p[ n]); n+=j+k;
 471                 iv=  &(p[ n]); n+=k;
 472                 exp_label=(unsigned char *)TLS_MD_SERVER_WRITE_KEY_CONST;
 473                 exp_label_len=TLS_MD_SERVER_WRITE_KEY_CONST_SIZE;
 474                 client_write=0;
 475                 }
 476
 477         if (n > s->s3->tmp.key_block_length)
 478                 {
 479                 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_INTERNAL_ERROR);
 480                 goto err2;
 481                 }
 482
 483         memcpy(mac_secret,ms,i);
 484         mac_key = EVP_PKEY_new_mac_key(mac_type, NULL,
 485                         mac_secret,*mac_secret_size);
 486         EVP_DigestSignInit(mac_ctx,NULL,m,NULL,mac_key);
 487         EVP_PKEY_free(mac_key);
 488 #ifdef TLS_DEBUG
 489 printf("which = %04X\nmac key=",which);
 490 { int z; for (z=0; z<i; z++) printf("%02X%c",ms[z],((z+1)%16)?' ':'\n'); }
 491 #endif
 492         if (is_export)
 493                 {
 494                 /* In here I set both the read and write key/iv to the
 495                  * same value since only the correct one will be used :-).
 496                  */
 497                 if (!tls1_PRF(s->s3->tmp.new_cipher->algorithm2,
 498                                 exp_label,exp_label_len,
 499                                 s->s3->client_random,SSL3_RANDOM_SIZE,
 500                                 s->s3->server_random,SSL3_RANDOM_SIZE,
 501                                 NULL,0,NULL,0,
 502                                 key,j,tmp1,tmp2,EVP_CIPHER_key_length(c)))
 503                         goto err2;
 504                 key=tmp1;
 505
 506                 if (k > 0)
 507                         {
 508                         if (!tls1_PRF(s->s3->tmp.new_cipher->algorithm2,
 509                                         TLS_MD_IV_BLOCK_CONST,TLS_MD_IV_BLOCK_CONST_SIZE,
 510                                         s->s3->client_random,SSL3_RANDOM_SIZE,
 511                                         s->s3->server_random,SSL3_RANDOM_SIZE,
 512                                         NULL,0,NULL,0,
 513                                         empty,0,iv1,iv2,k*2))
 514                                 goto err2;
 515                         if (client_write)
 516                                 iv=iv1;
 517                         else
 518                                 iv= &(iv1[k]);
 519                         }
 520                 }
 521
 522         s->session->key_arg_length=0;
 523 #ifdef KSSL_DEBUG
 524         {
 525         int i;
 526         printf("EVP_CipherInit_ex(dd,c,key=,iv=,which)\n");
 527         printf("\tkey= "); for (i=0; i<c->key_len; i++) printf("%02x", key[i]);
 528         printf("\n");
 529         printf("\t iv= "); for (i=0; i<c->iv_len; i++) printf("%02x", iv[i]);
 530         printf("\n");
 531         }
 532 #endif  /* KSSL_DEBUG */
 533
 534         EVP_CipherInit_ex(dd,c,NULL,key,iv,(which & SSL3_CC_WRITE));
 535 #ifdef TLS_DEBUG
 536 printf("which = %04X\nkey=",which);
 537 { int z; for (z=0; z<EVP_CIPHER_key_length(c); z++) printf("%02X%c",key[z],((z+1)%16)?' ':'\n'); }
 538 printf("\niv=");
 539 { int z; for (z=0; z<k; z++) printf("%02X%c",iv[z],((z+1)%16)?' ':'\n'); }
 540 printf("\n");
 541 #endif
 542
 543         OPENSSL_cleanse(tmp1,sizeof(tmp1));
 544         OPENSSL_cleanse(tmp2,sizeof(tmp1));
 545         OPENSSL_cleanse(iv1,sizeof(iv1));
 546         OPENSSL_cleanse(iv2,sizeof(iv2));
 547         return(1);
 548 err:
 549         SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE);
 550 err2:
 551         return(0);
 552         }
 553
 554 int tls1_setup_key_block(SSL *s)
 555         {
 556         unsigned char *p1,*p2=NULL;
 557         const EVP_CIPHER *c;
 558         const EVP_MD *hash;
 559         int num;
 560         SSL_COMP *comp;
 561         int mac_type= NID_undef,mac_secret_size=0;
 562         int ret=0;
 563
 564 #ifdef KSSL_DEBUG
 565         printf ("tls1_setup_key_block()\n");
 566 #endif  /* KSSL_DEBUG */
 567
 568         if (s->s3->tmp.key_block_length != 0)
 569                 return(1);
 570
 571         if (!ssl_cipher_get_evp(s->session,&c,&hash,&mac_type,&mac_secret_size,&comp))
 572                 {
 573                 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
 574                 return(0);
 575                 }
 576
 577         s->s3->tmp.new_sym_enc=c;
 578         s->s3->tmp.new_hash=hash;
 579         s->s3->tmp.new_mac_pkey_type = mac_type;
 580         s->s3->tmp.new_mac_secret_size = mac_secret_size;
 581         num=EVP_CIPHER_key_length(c)+mac_secret_size+EVP_CIPHER_iv_length(c);
 582         num*=2;
 583
 584         ssl3_cleanup_key_block(s);
 585
 586         if ((p1=(unsigned char *)OPENSSL_malloc(num)) == NULL)
 587                 {
 588                 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
 589                 goto err;
 590                 }
 591
 592         s->s3->tmp.key_block_length=num;
 593         s->s3->tmp.key_block=p1;
 594
 595         if ((p2=(unsigned char *)OPENSSL_malloc(num)) == NULL)
 596                 {
 597                 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
 598                 goto err;
 599                 }
 600
 601 #ifdef TLS_DEBUG
 602 printf("client random\n");
 603 { int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->client_random[z],((z+1)%16)?' ':'\n'); }
 604 printf("server random\n");
 605 { int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->server_random[z],((z+1)%16)?' ':'\n'); }
 606 printf("pre-master\n");
 607 { int z; for (z=0; z<s->session->master_key_length; z++) printf("%02X%c",s->session->master_key[z],((z+1)%16)?' ':'\n'); }
 608 #endif
 609         if (!tls1_generate_key_block(s,p1,p2,num))
 610                 goto err;
 611 #ifdef TLS_DEBUG
 612 printf("\nkey block\n");
 613 { int z; for (z=0; z<num; z++) printf("%02X%c",p1[z],((z+1)%16)?' ':'\n'); }
 614 #endif
 615
 616         if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)
 617                 && s->method->version <= TLS1_VERSION)
 618                 {
 619                 /* enable vulnerability countermeasure for CBC ciphers with
 620                  * known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt)
 621                  */
 622                 s->s3->need_empty_fragments = 1;
 623
 624                 if (s->session->cipher != NULL)
 625                         {
 626                         if (s->session->cipher->algorithm_enc == SSL_eNULL)
 627                                 s->s3->need_empty_fragments = 0;
 628
 629 #ifndef OPENSSL_NO_RC4
 630                         if (s->session->cipher->algorithm_enc == SSL_RC4)
 631                                 s->s3->need_empty_fragments = 0;
 632 #endif
 633                         }
 634                 }
 635
 636         ret = 1;
 637 err:
 638         if (p2)
 639                 {
 640                 OPENSSL_cleanse(p2,num);
 641                 OPENSSL_free(p2);
 642                 }
 643         return(ret);
 644         }
 645
 646 int tls1_enc(SSL *s, int send)
 647         {
 648         SSL3_RECORD *rec;
 649         EVP_CIPHER_CTX *ds;
 650         unsigned long l;
 651         int bs,i,ii,j,k,n=0;
 652         const EVP_CIPHER *enc;
 653
 654         if (send)
 655                 {
 656                 if (EVP_MD_CTX_md(s->write_hash))
 657                         {
 658                         n=EVP_MD_CTX_size(s->write_hash);
 659                         OPENSSL_assert(n >= 0);
 660                         }
 661                 ds=s->enc_write_ctx;
 662                 rec= &(s->s3->wrec);
 663                 if (s->enc_write_ctx == NULL)
 664                         enc=NULL;
 665                 else
 666                         {
 667                         int ivlen;
 668                         enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
 669                         /* For TLSv1.1 and later explicit IV */
 670                         if (s->version >= TLS1_1_VERSION
 671                                 && EVP_CIPHER_mode(enc) == EVP_CIPH_CBC_MODE)
 672                                 ivlen = EVP_CIPHER_iv_length(enc);
 673                         else
 674                                 ivlen = 0;
 675                         if (ivlen > 1)
 676                                 {
 677                                 if ( rec->data != rec->input)
 678                                 /* we can't write into the input stream:
 679                                  * Can this ever happen?? (steve)
 680                                  */
 681                                 fprintf(stderr,
 682                                         "%s:%d: rec->data != rec->input\n",
 683                                         __FILE__, __LINE__);
 684                                 else if (RAND_bytes(rec->input, ivlen) <= 0)
 685                                         return -1;
 686                                 }
 687                         }
 688                 }
 689         else
 690                 {
 691                 if (EVP_MD_CTX_md(s->read_hash))
 692                         {
 693                         n=EVP_MD_CTX_size(s->read_hash);
 694                         OPENSSL_assert(n >= 0);
 695                         }
 696                 ds=s->enc_read_ctx;
 697                 rec= &(s->s3->rrec);
 698                 if (s->enc_read_ctx == NULL)
 699                         enc=NULL;
 700                 else
 701                         enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
 702                 }
 703
 704 #ifdef KSSL_DEBUG
 705         printf("tls1_enc(%d)\n", send);
 706 #endif    /* KSSL_DEBUG */
 707
 708         if ((s->session == NULL) || (ds == NULL) ||
 709                 (enc == NULL))
 710                 {
 711                 memmove(rec->data,rec->input,rec->length);
 712                 rec->input=rec->data;
 713                 }
 714         else
 715                 {
 716                 l=rec->length;
 717                 bs=EVP_CIPHER_block_size(ds->cipher);
 718
 719                 if ((bs != 1) && send)
 720                         {
 721                         i=bs-((int)l%bs);
 722
 723                         /* Add weird padding of upto 256 bytes */
 724
 725                         /* we need to add 'i' padding bytes of value j */
 726                         j=i-1;
 727                         if (s->options & SSL_OP_TLS_BLOCK_PADDING_BUG)
 728                                 {
 729                                 if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
 730                                         j++;
 731                                 }
 732                         for (k=(int)l; k<(int)(l+i); k++)
 733                                 rec->input[k]=j;
 734                         l+=i;
 735                         rec->length+=i;
 736                         }
 737
 738 #ifdef KSSL_DEBUG
 739                 {
 740                 unsigned long ui;
 741                 printf("EVP_Cipher(ds=%p,rec->data=%p,rec->input=%p,l=%ld) ==>\n",
 742                         ds,rec->data,rec->input,l);
 743                 printf("\tEVP_CIPHER_CTX: %d buf_len, %d key_len [%d %d], %d iv_len\n",
 744                         ds->buf_len, ds->cipher->key_len,
 745                         DES_KEY_SZ, DES_SCHEDULE_SZ,
 746                         ds->cipher->iv_len);
 747                 printf("\t\tIV: ");
 748                 for (i=0; i<ds->cipher->iv_len; i++) printf("%02X", ds->iv[i]);
 749                 printf("\n");
 750                 printf("\trec->input=");
 751                 for (ui=0; ui<l; ui++) printf(" %02x", rec->input[ui]);
 752                 printf("\n");
 753                 }
 754 #endif  /* KSSL_DEBUG */
 755
 756                 if (!send)
 757                         {
 758                         if (l == 0 || l%bs != 0)
 759                                 {
 760                                 if (s->version >= TLS1_1_VERSION)
 761                                         return -1;
 762                                 SSLerr(SSL_F_TLS1_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
 763                                 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
 764                                 return 0;
 765                                 }
 766                         }
 767
 768                 EVP_Cipher(ds,rec->data,rec->input,l);
 769
 770 #ifdef KSSL_DEBUG
 771                 {
 772                 unsigned long i;
 773                 printf("\trec->data=");
 774                 for (i=0; i<l; i++)
 775                         printf(" %02x", rec->data[i]);  printf("\n");
 776                 }
 777 #endif  /* KSSL_DEBUG */
 778
 779                 if ((bs != 1) && !send)
 780                         {
 781                         ii=i=rec->data[l-1]; /* padding_length */
 782                         i++;
 783                         /* NB: if compression is in operation the first packet
 784                          * may not be of even length so the padding bug check
 785                          * cannot be performed. This bug workaround has been
 786                          * around since SSLeay so hopefully it is either fixed
 787                          * now or no buggy implementation supports compression
 788                          * [steve]
 789                          */
 790                         if ( (s->options&SSL_OP_TLS_BLOCK_PADDING_BUG)
 791                                 && !s->expand)
 792                                 {
 793                                 /* First packet is even in size, so check */
 794                                 if ((memcmp(s->s3->read_sequence,
 795                                         "\0\0\0\0\0\0\0\0",8) == 0) && !(ii & 1))
 796                                         s->s3->flags|=TLS1_FLAGS_TLS_PADDING_BUG;
 797                                 if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
 798                                         i--;
 799                                 }
 800                         /* TLS 1.0 does not bound the number of padding bytes by the block size.
 801                          * All of them must have value 'padding_length'. */
 802                         if (i > (int)rec->length)
 803                                 {
 804                                 /* Incorrect padding. SSLerr() and ssl3_alert are done
 805                                  * by caller: we don't want to reveal whether this is
 806                                  * a decryption error or a MAC verification failure
 807                                  * (see http://www.openssl.org/~bodo/tls-cbc.txt) */
 808                                 return -1;
 809                                 }
 810                         for (j=(int)(l-i); j<(int)l; j++)
 811                                 {
 812                                 if (rec->data[j] != ii)
 813                                         {
 814                                         /* Incorrect padding */
 815                                         return -1;
 816                                         }
 817                                 }
 818                         rec->length -=i;
 819                         if (s->version >= TLS1_1_VERSION
 820                                 && EVP_CIPHER_CTX_mode(ds) == EVP_CIPH_CBC_MODE)
 821                                 {
 822                                 rec->data += bs;    /* skip the explicit IV */
 823                                 rec->input += bs;
 824                                 rec->length -= bs;
 825                                 }
 826                         }
 827                 }
 828         return(1);
 829         }
 830 int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *out)
 831         {
 832         unsigned int ret;
 833         EVP_MD_CTX ctx, *d=NULL;
 834         int i;
 835
 836         if (s->s3->handshake_buffer)
 837                 if (!ssl3_digest_cached_records(s))
 838                         return 0;
 839
 840         for (i=0;i<SSL_MAX_DIGEST;i++)
 841                 {
 842                   if (s->s3->handshake_dgst[i]&&EVP_MD_CTX_type(s->s3->handshake_dgst[i])==md_nid)
 843                         {
 844                         d=s->s3->handshake_dgst[i];
 845                         break;
 846                         }
 847                 }
 848         if (!d) {
 849                 SSLerr(SSL_F_TLS1_CERT_VERIFY_MAC,SSL_R_NO_REQUIRED_DIGEST);
 850                 return 0;
 851         }
 852
 853         EVP_MD_CTX_init(&ctx);
 854         EVP_MD_CTX_copy_ex(&ctx,d);
 855         EVP_DigestFinal_ex(&ctx,out,&ret);
 856         EVP_MD_CTX_cleanup(&ctx);
 857         return((int)ret);
 858         }
 859
 860 int tls1_final_finish_mac(SSL *s,
 861              const char *str, int slen, unsigned char *out)
 862         {
 863         unsigned int i;
 864         EVP_MD_CTX ctx;
 865         unsigned char buf[2*EVP_MAX_MD_SIZE];
 866         unsigned char *q,buf2[12];
 867         int idx;
 868         long mask;
 869         int err=0;
 870         const EVP_MD *md;
 871
 872         q=buf;
 873
 874         if (s->s3->handshake_buffer)
 875                 if (!ssl3_digest_cached_records(s))
 876                         return 0;
 877
 878         EVP_MD_CTX_init(&ctx);
 879
 880         for (idx=0;ssl_get_handshake_digest(idx,&mask,&md);idx++)
 881                 {
 882                 if (mask & s->s3->tmp.new_cipher->algorithm2)
 883                         {
 884                         int hashsize = EVP_MD_size(md);
 885                         if (hashsize < 0 || hashsize > (int)(sizeof buf - (size_t)(q-buf)))
 886                                 {
 887                                 /* internal error: 'buf' is too small for this cipersuite! */
 888                                 err = 1;
 889                                 }
 890                         else
 891                                 {
 892                                 EVP_MD_CTX_copy_ex(&ctx,s->s3->handshake_dgst[idx]);
 893                                 EVP_DigestFinal_ex(&ctx,q,&i);
 894                                 if (i != (unsigned int)hashsize) /* can't really happen */
 895                                         err = 1;
 896                                 q+=i;
 897                                 }
 898                         }
 899                 }
 900
 901         if (!tls1_PRF(s->s3->tmp.new_cipher->algorithm2,
 902                         str,slen, buf,(int)(q-buf), NULL,0, NULL,0, NULL,0,
 903                         s->session->master_key,s->session->master_key_length,
 904                         out,buf2,sizeof buf2))
 905                 err = 1;
 906         EVP_MD_CTX_cleanup(&ctx);
 907
 908         if (err)
 909                 return 0;
 910         else
 911                 return sizeof buf2;
 912         }
 913
 914 int tls1_mac(SSL *ssl, unsigned char *md, int send)
 915         {
 916         SSL3_RECORD *rec;
 917         unsigned char *seq;
 918         EVP_MD_CTX *hash;
 919         size_t md_size;
 920         int i;
 921         EVP_MD_CTX hmac, *mac_ctx;
 922         unsigned char buf[5];
 923         int stream_mac = (send?(ssl->mac_flags & SSL_MAC_FLAG_WRITE_MAC_STREAM):(ssl->mac_flags&SSL_MAC_FLAG_READ_MAC_STREAM));
 924         int t;
 925
 926         if (send)
 927                 {
 928                 rec= &(ssl->s3->wrec);
 929                 seq= &(ssl->s3->write_sequence[0]);
 930                 hash=ssl->write_hash;
 931                 }
 932         else
 933                 {
 934                 rec= &(ssl->s3->rrec);
 935                 seq= &(ssl->s3->read_sequence[0]);
 936                 hash=ssl->read_hash;
 937                 }
 938
 939         t=EVP_MD_CTX_size(hash);
 940         OPENSSL_assert(t >= 0);
 941         md_size=t;
 942
 943         buf[0]=rec->type;
 944         buf[1]=(unsigned char)(ssl->version>>8);
 945         buf[2]=(unsigned char)(ssl->version);
 946         buf[3]=rec->length>>8;
 947         buf[4]=rec->length&0xff;
 948
 949         /* I should fix this up TLS TLS TLS TLS TLS XXXXXXXX */
 950         if (stream_mac)
 951                 {
 952                         mac_ctx = hash;
 953                 }
 954                 else
 955                 {
 956                         EVP_MD_CTX_copy(&hmac,hash);
 957                         mac_ctx = &hmac;
 958                 }
 959
 960         if (ssl->version == DTLS1_VERSION || ssl->version == DTLS1_BAD_VER)
 961                 {
 962                 unsigned char dtlsseq[8],*p=dtlsseq;
 963
 964                 s2n(send?ssl->d1->w_epoch:ssl->d1->r_epoch, p);
 965                 memcpy (p,&seq[2],6);
 966
 967                 EVP_DigestSignUpdate(mac_ctx,dtlsseq,8);
 968                 }
 969         else
 970                 EVP_DigestSignUpdate(mac_ctx,seq,8);
 971
 972         EVP_DigestSignUpdate(mac_ctx,buf,5);
 973         EVP_DigestSignUpdate(mac_ctx,rec->input,rec->length);
 974         t=EVP_DigestSignFinal(mac_ctx,md,&md_size);
 975         OPENSSL_assert(t > 0);
 976
 977         if (!stream_mac) EVP_MD_CTX_cleanup(&hmac);
 978 #ifdef TLS_DEBUG
 979 printf("sec=");
 980 {unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",mac_sec[z]); printf("\n"); }
 981 printf("seq=");
 982 {int z; for (z=0; z<8; z++) printf("%02X ",seq[z]); printf("\n"); }
 983 printf("buf=");
 984 {int z; for (z=0; z<5; z++) printf("%02X ",buf[z]); printf("\n"); }
 985 printf("rec=");
 986 {unsigned int z; for (z=0; z<rec->length; z++) printf("%02X ",buf[z]); printf("\n"); }
 987 #endif
 988
 989         if (ssl->version != DTLS1_VERSION && ssl->version != DTLS1_BAD_VER)
 990                 {
 991                 for (i=7; i>=0; i--)
 992                         {
 993                         ++seq[i];
 994                         if (seq[i] != 0) break;
 995                         }
 996                 }
 997
 998 #ifdef TLS_DEBUG
 999 {unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",md[z]); printf("\n"); }
1000 #endif
1001         return(md_size);
1002         }
1003
1004 int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
1005              int len)
1006         {
1007         unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH];
1008         const void *co = NULL, *so = NULL;
1009         int col = 0, sol = 0;
1010
1011 #ifdef KSSL_DEBUG
1012         printf ("tls1_generate_master_secret(%p,%p, %p, %d)\n", s,out, p,len);
1013 #endif  /* KSSL_DEBUG */
1014
1015 #ifdef TLSEXT_TYPE_opaque_prf_input
1016         if (s->s3->client_opaque_prf_input != NULL && s->s3->server_opaque_prf_input != NULL &&
1017             s->s3->client_opaque_prf_input_len > 0 &&
1018             s->s3->client_opaque_prf_input_len == s->s3->server_opaque_prf_input_len)
1019                 {
1020                 co = s->s3->client_opaque_prf_input;
1021                 col = s->s3->server_opaque_prf_input_len;
1022                 so = s->s3->server_opaque_prf_input;
1023                 sol = s->s3->client_opaque_prf_input_len; /* must be same as col (see draft-rescorla-tls-opaque-prf-input-00.txt, section 3.1) */
1024                 }
1025 #endif
1026
1027         tls1_PRF(s->s3->tmp.new_cipher->algorithm2,
1028                 TLS_MD_MASTER_SECRET_CONST,TLS_MD_MASTER_SECRET_CONST_SIZE,
1029                 s->s3->client_random,SSL3_RANDOM_SIZE,
1030                 co, col,
1031                 s->s3->server_random,SSL3_RANDOM_SIZE,
1032                 so, sol,
1033                 p,len,
1034                 s->session->master_key,buff,sizeof buff);
1035
1036 #ifdef KSSL_DEBUG
1037         printf ("tls1_generate_master_secret() complete\n");
1038 #endif  /* KSSL_DEBUG */
1039         return(SSL3_MASTER_SECRET_SIZE);
1040         }
1041
1042 int tls1_alert_code(int code)
1043         {
1044         switch (code)
1045                 {
1046         case SSL_AD_CLOSE_NOTIFY:       return(SSL3_AD_CLOSE_NOTIFY);
1047         case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE);
1048         case SSL_AD_BAD_RECORD_MAC:     return(SSL3_AD_BAD_RECORD_MAC);
1049         case SSL_AD_DECRYPTION_FAILED:  return(TLS1_AD_DECRYPTION_FAILED);
1050         case SSL_AD_RECORD_OVERFLOW:    return(TLS1_AD_RECORD_OVERFLOW);
1051         case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE);
1052         case SSL_AD_HANDSHAKE_FAILURE:  return(SSL3_AD_HANDSHAKE_FAILURE);
1053         case SSL_AD_NO_CERTIFICATE:     return(-1);
1054         case SSL_AD_BAD_CERTIFICATE:    return(SSL3_AD_BAD_CERTIFICATE);
1055         case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE);
1056         case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED);
1057         case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED);
1058         case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN);
1059         case SSL_AD_ILLEGAL_PARAMETER:  return(SSL3_AD_ILLEGAL_PARAMETER);
1060         case SSL_AD_UNKNOWN_CA:         return(TLS1_AD_UNKNOWN_CA);
1061         case SSL_AD_ACCESS_DENIED:      return(TLS1_AD_ACCESS_DENIED);
1062         case SSL_AD_DECODE_ERROR:       return(TLS1_AD_DECODE_ERROR);
1063         case SSL_AD_DECRYPT_ERROR:      return(TLS1_AD_DECRYPT_ERROR);
1064         case SSL_AD_EXPORT_RESTRICTION: return(TLS1_AD_EXPORT_RESTRICTION);
1065         case SSL_AD_PROTOCOL_VERSION:   return(TLS1_AD_PROTOCOL_VERSION);
1066         case SSL_AD_INSUFFICIENT_SECURITY:return(TLS1_AD_INSUFFICIENT_SECURITY);
1067         case SSL_AD_INTERNAL_ERROR:     return(TLS1_AD_INTERNAL_ERROR);
1068         case SSL_AD_USER_CANCELLED:     return(TLS1_AD_USER_CANCELLED);
1069         case SSL_AD_NO_RENEGOTIATION:   return(TLS1_AD_NO_RENEGOTIATION);
1070         case SSL_AD_UNSUPPORTED_EXTENSION: return(TLS1_AD_UNSUPPORTED_EXTENSION);
1071         case SSL_AD_CERTIFICATE_UNOBTAINABLE: return(TLS1_AD_CERTIFICATE_UNOBTAINABLE);
1072         case SSL_AD_UNRECOGNIZED_NAME:  return(TLS1_AD_UNRECOGNIZED_NAME);
1073         case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: return(TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE);
1074         case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: return(TLS1_AD_BAD_CERTIFICATE_HASH_VALUE);
1075         case SSL_AD_UNKNOWN_PSK_IDENTITY:return(TLS1_AD_UNKNOWN_PSK_IDENTITY);
1076 #ifndef OPENSSL_NO_SRP
1077         case SSL_AD_MISSING_SRP_USERNAME:return(TLS1_AD_MISSING_SRP_USERNAME);
1078 #endif
1079 #if 0 /* not appropriate for TLS, not used for DTLS */
1080         case DTLS1_AD_MISSING_HANDSHAKE_MESSAGE: return
1081                                           (DTLS1_AD_MISSING_HANDSHAKE_MESSAGE);
1082 #endif
1083         default:                        return(-1);
1084                 }
1085         }
1086
1087 int SSL_tls1_key_exporter(SSL *s, unsigned char *label, int label_len,
1088                            unsigned char *context, int context_len,
1089                            unsigned char *out, int olen)
1090         {
1091         unsigned char *tmp;
1092         int rv;
1093
1094         tmp = OPENSSL_malloc(olen);
1095
1096         if (!tmp)
1097                 return 0;
1098
1099         rv = tls1_PRF(s->s3->tmp.new_cipher->algorithm2,
1100                          label, label_len,
1101                          s->s3->client_random,SSL3_RANDOM_SIZE,
1102                          s->s3->server_random,SSL3_RANDOM_SIZE,
1103                          context, context_len, NULL, 0,
1104                          s->session->master_key, s->session->master_key_length,
1105                          out, tmp, olen);
1106
1107         OPENSSL_free(tmp);
1108         return rv;
1109         }