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         EVP_MD_CTX_set_flags(&ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
 175         EVP_MD_CTX_set_flags(&ctx_tmp, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
 176         mac_key = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL, sec, sec_len);
 177         if (!mac_key)
 178                 goto err;
 179         if (!EVP_DigestSignInit(&ctx,NULL,md, NULL, mac_key))
 180                 goto err;
 181         if (!EVP_DigestSignInit(&ctx_tmp,NULL,md, NULL, mac_key))
 182                 goto err;
 183         if (seed1 && !EVP_DigestSignUpdate(&ctx,seed1,seed1_len))
 184                 goto err;
 185         if (seed2 && !EVP_DigestSignUpdate(&ctx,seed2,seed2_len))
 186                 goto err;
 187         if (seed3 && !EVP_DigestSignUpdate(&ctx,seed3,seed3_len))
 188                 goto err;
 189         if (seed4 && !EVP_DigestSignUpdate(&ctx,seed4,seed4_len))
 190                 goto err;
 191         if (seed5 && !EVP_DigestSignUpdate(&ctx,seed5,seed5_len))
 192                 goto err;
 193         if (!EVP_DigestSignFinal(&ctx,A1,&A1_len))
 194                 goto err;
 195
 196         for (;;)
 197                 {
 198                 /* Reinit mac contexts */
 199                 if (!EVP_DigestSignInit(&ctx,NULL,md, NULL, mac_key))
 200                         goto err;
 201                 if (!EVP_DigestSignInit(&ctx_tmp,NULL,md, NULL, mac_key))
 202                         goto err;
 203                 if (!EVP_DigestSignUpdate(&ctx,A1,A1_len))
 204                         goto err;
 205                 if (!EVP_DigestSignUpdate(&ctx_tmp,A1,A1_len))
 206                         goto err;
 207                 if (seed1 && !EVP_DigestSignUpdate(&ctx,seed1,seed1_len))
 208                         goto err;
 209                 if (seed2 && !EVP_DigestSignUpdate(&ctx,seed2,seed2_len))
 210                         goto err;
 211                 if (seed3 && !EVP_DigestSignUpdate(&ctx,seed3,seed3_len))
 212                         goto err;
 213                 if (seed4 && !EVP_DigestSignUpdate(&ctx,seed4,seed4_len))
 214                         goto err;
 215                 if (seed5 && !EVP_DigestSignUpdate(&ctx,seed5,seed5_len))
 216                         goto err;
 217
 218                 if (olen > chunk)
 219                         {
 220                         if (!EVP_DigestSignFinal(&ctx,out,&j))
 221                                 goto err;
 222                         out+=j;
 223                         olen-=j;
 224                         /* calc the next A1 value */
 225                         if (!EVP_DigestSignFinal(&ctx_tmp,A1,&A1_len))
 226                                 goto err;
 227                         }
 228                 else    /* last one */
 229                         {
 230                         if (!EVP_DigestSignFinal(&ctx,A1,&A1_len))
 231                                 goto err;
 232                         memcpy(out,A1,olen);
 233                         break;
 234                         }
 235                 }
 236         ret = 1;
 237 err:
 238         EVP_PKEY_free(mac_key);
 239         EVP_MD_CTX_cleanup(&ctx);
 240         EVP_MD_CTX_cleanup(&ctx_tmp);
 241         OPENSSL_cleanse(A1,sizeof(A1));
 242         return ret;
 243         }
 244
 245 /* seed1 through seed5 are virtually concatenated */
 246 static int tls1_PRF(long digest_mask,
 247                      const void *seed1, int seed1_len,
 248                      const void *seed2, int seed2_len,
 249                      const void *seed3, int seed3_len,
 250                      const void *seed4, int seed4_len,
 251                      const void *seed5, int seed5_len,
 252                      const unsigned char *sec, int slen,
 253                      unsigned char *out1,
 254                      unsigned char *out2, int olen)
 255         {
 256         int len,i,idx,count;
 257         const unsigned char *S1;
 258         long m;
 259         const EVP_MD *md;
 260         int ret = 0;
 261
 262         /* Count number of digests and partition sec evenly */
 263         count=0;
 264         for (idx=0;ssl_get_handshake_digest(idx,&m,&md);idx++) {
 265                 if ((m<<TLS1_PRF_DGST_SHIFT) & digest_mask) count++;
 266         }
 267         len=slen/count;
 268         S1=sec;
 269         memset(out1,0,olen);
 270         for (idx=0;ssl_get_handshake_digest(idx,&m,&md);idx++) {
 271                 if ((m<<TLS1_PRF_DGST_SHIFT) & digest_mask) {
 272                         if (!md) {
 273                                 SSLerr(SSL_F_TLS1_PRF,
 274                                 SSL_R_UNSUPPORTED_DIGEST_TYPE);
 275                                 goto err;
 276                         }
 277                         if (!tls1_P_hash(md ,S1,len+(slen&1),
 278                                         seed1,seed1_len,seed2,seed2_len,seed3,seed3_len,seed4,seed4_len,seed5,seed5_len,
 279                                         out2,olen))
 280                                 goto err;
 281                         S1+=len;
 282                         for (i=0; i<olen; i++)
 283                         {
 284                                 out1[i]^=out2[i];
 285                         }
 286                 }
 287         }
 288         ret = 1;
 289 err:
 290         return ret;
 291 }
 292 static int tls1_generate_key_block(SSL *s, unsigned char *km,
 293              unsigned char *tmp, int num)
 294         {
 295         int ret;
 296         ret = tls1_PRF(ssl_get_algorithm2(s),
 297                  TLS_MD_KEY_EXPANSION_CONST,TLS_MD_KEY_EXPANSION_CONST_SIZE,
 298                  s->s3->server_random,SSL3_RANDOM_SIZE,
 299                  s->s3->client_random,SSL3_RANDOM_SIZE,
 300                  NULL,0,NULL,0,
 301                  s->session->master_key,s->session->master_key_length,
 302                  km,tmp,num);
 303 #ifdef KSSL_DEBUG
 304         printf("tls1_generate_key_block() ==> %d byte master_key =\n\t",
 305                 s->session->master_key_length);
 306         {
 307         int i;
 308         for (i=0; i < s->session->master_key_length; i++)
 309                 {
 310                 printf("%02X", s->session->master_key[i]);
 311                 }
 312         printf("\n");  }
 313 #endif    /* KSSL_DEBUG */
 314         return ret;
 315         }
 316
 317 int tls1_change_cipher_state(SSL *s, int which)
 318         {
 319         static const unsigned char empty[]="";
 320         unsigned char *p,*mac_secret;
 321         unsigned char *exp_label;
 322         unsigned char tmp1[EVP_MAX_KEY_LENGTH];
 323         unsigned char tmp2[EVP_MAX_KEY_LENGTH];
 324         unsigned char iv1[EVP_MAX_IV_LENGTH*2];
 325         unsigned char iv2[EVP_MAX_IV_LENGTH*2];
 326         unsigned char *ms,*key,*iv;
 327         int client_write;
 328         EVP_CIPHER_CTX *dd;
 329         const EVP_CIPHER *c;
 330 #ifndef OPENSSL_NO_COMP
 331         const SSL_COMP *comp;
 332 #endif
 333         const EVP_MD *m;
 334         int mac_type;
 335         int *mac_secret_size;
 336         EVP_MD_CTX *mac_ctx;
 337         EVP_PKEY *mac_key;
 338         int is_export,n,i,j,k,exp_label_len,cl;
 339         int reuse_dd = 0;
 340
 341         is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
 342         c=s->s3->tmp.new_sym_enc;
 343         m=s->s3->tmp.new_hash;
 344         mac_type = s->s3->tmp.new_mac_pkey_type;
 345 #ifndef OPENSSL_NO_COMP
 346         comp=s->s3->tmp.new_compression;
 347 #endif
 348
 349 #ifdef KSSL_DEBUG
 350         printf("tls1_change_cipher_state(which= %d) w/\n", which);
 351         printf("\talg= %ld/%ld, comp= %p\n",
 352                s->s3->tmp.new_cipher->algorithm_mkey,
 353                s->s3->tmp.new_cipher->algorithm_auth,
 354                comp);
 355         printf("\tevp_cipher == %p ==? &d_cbc_ede_cipher3\n", c);
 356         printf("\tevp_cipher: nid, blksz= %d, %d, keylen=%d, ivlen=%d\n",
 357                 c->nid,c->block_size,c->key_len,c->iv_len);
 358         printf("\tkey_block: len= %d, data= ", s->s3->tmp.key_block_length);
 359         {
 360         int i;
 361         for (i=0; i<s->s3->tmp.key_block_length; i++)
 362                 printf("%02x", key_block[i]);  printf("\n");
 363         }
 364 #endif  /* KSSL_DEBUG */
 365
 366         if (which & SSL3_CC_READ)
 367                 {
 368                 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
 369                         s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM;
 370                         else
 371                         s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM;
 372
 373                 if (s->enc_read_ctx != NULL)
 374                         reuse_dd = 1;
 375                 else if ((s->enc_read_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
 376                         goto err;
 377                 else
 378                         /* make sure it's intialized in case we exit later with an error */
 379                         EVP_CIPHER_CTX_init(s->enc_read_ctx);
 380                 dd= s->enc_read_ctx;
 381                 mac_ctx=ssl_replace_hash(&s->read_hash,NULL);
 382 #ifndef OPENSSL_NO_COMP
 383                 if (s->expand != NULL)
 384                         {
 385                         COMP_CTX_free(s->expand);
 386                         s->expand=NULL;
 387                         }
 388                 if (comp != NULL)
 389                         {
 390                         s->expand=COMP_CTX_new(comp->method);
 391                         if (s->expand == NULL)
 392                                 {
 393                                 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
 394                                 goto err2;
 395                                 }
 396                         if (s->s3->rrec.comp == NULL)
 397                                 s->s3->rrec.comp=(unsigned char *)
 398                                         OPENSSL_malloc(SSL3_RT_MAX_ENCRYPTED_LENGTH);
 399                         if (s->s3->rrec.comp == NULL)
 400                                 goto err;
 401                         }
 402 #endif
 403                 /* this is done by dtls1_reset_seq_numbers for DTLS1_VERSION */
 404                 if (s->version != DTLS1_VERSION)
 405                         memset(&(s->s3->read_sequence[0]),0,8);
 406                 mac_secret= &(s->s3->read_mac_secret[0]);
 407                 mac_secret_size=&(s->s3->read_mac_secret_size);
 408                 }
 409         else
 410                 {
 411                 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
 412                         s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM;
 413                         else
 414                         s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM;
 415                 if (s->enc_write_ctx != NULL)
 416                         reuse_dd = 1;
 417                 else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
 418                         goto err;
 419                 else
 420                         /* make sure it's intialized in case we exit later with an error */
 421                         EVP_CIPHER_CTX_init(s->enc_write_ctx);
 422                 dd= s->enc_write_ctx;
 423                 mac_ctx = ssl_replace_hash(&s->write_hash,NULL);
 424 #ifndef OPENSSL_NO_COMP
 425                 if (s->compress != NULL)
 426                         {
 427                         COMP_CTX_free(s->compress);
 428                         s->compress=NULL;
 429                         }
 430                 if (comp != NULL)
 431                         {
 432                         s->compress=COMP_CTX_new(comp->method);
 433                         if (s->compress == NULL)
 434                                 {
 435                                 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
 436                                 goto err2;
 437                                 }
 438                         }
 439 #endif
 440                 /* this is done by dtls1_reset_seq_numbers for DTLS1_VERSION */
 441                 if (s->version != DTLS1_VERSION)
 442                         memset(&(s->s3->write_sequence[0]),0,8);
 443                 mac_secret= &(s->s3->write_mac_secret[0]);
 444                 mac_secret_size = &(s->s3->write_mac_secret_size);
 445                 }
 446
 447         if (reuse_dd)
 448                 EVP_CIPHER_CTX_cleanup(dd);
 449
 450         p=s->s3->tmp.key_block;
 451         i=*mac_secret_size=s->s3->tmp.new_mac_secret_size;
 452
 453         cl=EVP_CIPHER_key_length(c);
 454         j=is_export ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
 455                        cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
 456         /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
 457         k=EVP_CIPHER_iv_length(c);
 458         if (    (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
 459                 (which == SSL3_CHANGE_CIPHER_SERVER_READ))
 460                 {
 461                 ms=  &(p[ 0]); n=i+i;
 462                 key= &(p[ n]); n+=j+j;
 463                 iv=  &(p[ n]); n+=k+k;
 464                 exp_label=(unsigned char *)TLS_MD_CLIENT_WRITE_KEY_CONST;
 465                 exp_label_len=TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE;
 466                 client_write=1;
 467                 }
 468         else
 469                 {
 470                 n=i;
 471                 ms=  &(p[ n]); n+=i+j;
 472                 key= &(p[ n]); n+=j+k;
 473                 iv=  &(p[ n]); n+=k;
 474                 exp_label=(unsigned char *)TLS_MD_SERVER_WRITE_KEY_CONST;
 475                 exp_label_len=TLS_MD_SERVER_WRITE_KEY_CONST_SIZE;
 476                 client_write=0;
 477                 }
 478
 479         if (n > s->s3->tmp.key_block_length)
 480                 {
 481                 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_INTERNAL_ERROR);
 482                 goto err2;
 483                 }
 484
 485         memcpy(mac_secret,ms,i);
 486         mac_key = EVP_PKEY_new_mac_key(mac_type, NULL,
 487                         mac_secret,*mac_secret_size);
 488         EVP_DigestSignInit(mac_ctx,NULL,m,NULL,mac_key);
 489         EVP_PKEY_free(mac_key);
 490 #ifdef TLS_DEBUG
 491 printf("which = %04X\nmac key=",which);
 492 { int z; for (z=0; z<i; z++) printf("%02X%c",ms[z],((z+1)%16)?' ':'\n'); }
 493 #endif
 494         if (is_export)
 495                 {
 496                 /* In here I set both the read and write key/iv to the
 497                  * same value since only the correct one will be used :-).
 498                  */
 499                 if (!tls1_PRF(ssl_get_algorithm2(s),
 500                                 exp_label,exp_label_len,
 501                                 s->s3->client_random,SSL3_RANDOM_SIZE,
 502                                 s->s3->server_random,SSL3_RANDOM_SIZE,
 503                                 NULL,0,NULL,0,
 504                                 key,j,tmp1,tmp2,EVP_CIPHER_key_length(c)))
 505                         goto err2;
 506                 key=tmp1;
 507
 508                 if (k > 0)
 509                         {
 510                         if (!tls1_PRF(ssl_get_algorithm2(s),
 511                                         TLS_MD_IV_BLOCK_CONST,TLS_MD_IV_BLOCK_CONST_SIZE,
 512                                         s->s3->client_random,SSL3_RANDOM_SIZE,
 513                                         s->s3->server_random,SSL3_RANDOM_SIZE,
 514                                         NULL,0,NULL,0,
 515                                         empty,0,iv1,iv2,k*2))
 516                                 goto err2;
 517                         if (client_write)
 518                                 iv=iv1;
 519                         else
 520                                 iv= &(iv1[k]);
 521                         }
 522                 }
 523
 524         s->session->key_arg_length=0;
 525 #ifdef KSSL_DEBUG
 526         {
 527         int i;
 528         printf("EVP_CipherInit_ex(dd,c,key=,iv=,which)\n");
 529         printf("\tkey= "); for (i=0; i<c->key_len; i++) printf("%02x", key[i]);
 530         printf("\n");
 531         printf("\t iv= "); for (i=0; i<c->iv_len; i++) printf("%02x", iv[i]);
 532         printf("\n");
 533         }
 534 #endif  /* KSSL_DEBUG */
 535
 536         EVP_CipherInit_ex(dd,c,NULL,key,iv,(which & SSL3_CC_WRITE));
 537 #ifdef TLS_DEBUG
 538 printf("which = %04X\nkey=",which);
 539 { int z; for (z=0; z<EVP_CIPHER_key_length(c); z++) printf("%02X%c",key[z],((z+1)%16)?' ':'\n'); }
 540 printf("\niv=");
 541 { int z; for (z=0; z<k; z++) printf("%02X%c",iv[z],((z+1)%16)?' ':'\n'); }
 542 printf("\n");
 543 #endif
 544
 545         OPENSSL_cleanse(tmp1,sizeof(tmp1));
 546         OPENSSL_cleanse(tmp2,sizeof(tmp1));
 547         OPENSSL_cleanse(iv1,sizeof(iv1));
 548         OPENSSL_cleanse(iv2,sizeof(iv2));
 549         return(1);
 550 err:
 551         SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE);
 552 err2:
 553         return(0);
 554         }
 555
 556 int tls1_setup_key_block(SSL *s)
 557         {
 558         unsigned char *p1,*p2=NULL;
 559         const EVP_CIPHER *c;
 560         const EVP_MD *hash;
 561         int num;
 562         SSL_COMP *comp;
 563         int mac_type= NID_undef,mac_secret_size=0;
 564         int ret=0;
 565
 566 #ifdef KSSL_DEBUG
 567         printf ("tls1_setup_key_block()\n");
 568 #endif  /* KSSL_DEBUG */
 569
 570         if (s->s3->tmp.key_block_length != 0)
 571                 return(1);
 572
 573         if (!ssl_cipher_get_evp(s->session,&c,&hash,&mac_type,&mac_secret_size,&comp))
 574                 {
 575                 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
 576                 return(0);
 577                 }
 578
 579         s->s3->tmp.new_sym_enc=c;
 580         s->s3->tmp.new_hash=hash;
 581         s->s3->tmp.new_mac_pkey_type = mac_type;
 582         s->s3->tmp.new_mac_secret_size = mac_secret_size;
 583         num=EVP_CIPHER_key_length(c)+mac_secret_size+EVP_CIPHER_iv_length(c);
 584         num*=2;
 585
 586         ssl3_cleanup_key_block(s);
 587
 588         if ((p1=(unsigned char *)OPENSSL_malloc(num)) == NULL)
 589                 {
 590                 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
 591                 goto err;
 592                 }
 593
 594         s->s3->tmp.key_block_length=num;
 595         s->s3->tmp.key_block=p1;
 596
 597         if ((p2=(unsigned char *)OPENSSL_malloc(num)) == NULL)
 598                 {
 599                 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
 600                 goto err;
 601                 }
 602
 603 #ifdef TLS_DEBUG
 604 printf("client random\n");
 605 { int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->client_random[z],((z+1)%16)?' ':'\n'); }
 606 printf("server random\n");
 607 { int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->server_random[z],((z+1)%16)?' ':'\n'); }
 608 printf("pre-master\n");
 609 { int z; for (z=0; z<s->session->master_key_length; z++) printf("%02X%c",s->session->master_key[z],((z+1)%16)?' ':'\n'); }
 610 #endif
 611         if (!tls1_generate_key_block(s,p1,p2,num))
 612                 goto err;
 613 #ifdef TLS_DEBUG
 614 printf("\nkey block\n");
 615 { int z; for (z=0; z<num; z++) printf("%02X%c",p1[z],((z+1)%16)?' ':'\n'); }
 616 #endif
 617
 618         if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)
 619                 && s->method->version <= TLS1_VERSION)
 620                 {
 621                 /* enable vulnerability countermeasure for CBC ciphers with
 622                  * known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt)
 623                  */
 624                 s->s3->need_empty_fragments = 1;
 625
 626                 if (s->session->cipher != NULL)
 627                         {
 628                         if (s->session->cipher->algorithm_enc == SSL_eNULL)
 629                                 s->s3->need_empty_fragments = 0;
 630
 631 #ifndef OPENSSL_NO_RC4
 632                         if (s->session->cipher->algorithm_enc == SSL_RC4)
 633                                 s->s3->need_empty_fragments = 0;
 634 #endif
 635                         }
 636                 }
 637
 638         ret = 1;
 639 err:
 640         if (p2)
 641                 {
 642                 OPENSSL_cleanse(p2,num);
 643                 OPENSSL_free(p2);
 644                 }
 645         return(ret);
 646         }
 647
 648 int tls1_enc(SSL *s, int send)
 649         {
 650         SSL3_RECORD *rec;
 651         EVP_CIPHER_CTX *ds;
 652         unsigned long l;
 653         int bs,i,ii,j,k,n=0;
 654         const EVP_CIPHER *enc;
 655
 656         if (send)
 657                 {
 658                 if (EVP_MD_CTX_md(s->write_hash))
 659                         {
 660                         n=EVP_MD_CTX_size(s->write_hash);
 661                         OPENSSL_assert(n >= 0);
 662                         }
 663                 ds=s->enc_write_ctx;
 664                 rec= &(s->s3->wrec);
 665                 if (s->enc_write_ctx == NULL)
 666                         enc=NULL;
 667                 else
 668                         {
 669                         int ivlen;
 670                         enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
 671                         /* For TLSv1.1 and later explicit IV */
 672                         if (s->version >= TLS1_1_VERSION
 673                                 && EVP_CIPHER_mode(enc) == EVP_CIPH_CBC_MODE)
 674                                 ivlen = EVP_CIPHER_iv_length(enc);
 675                         else
 676                                 ivlen = 0;
 677                         if (ivlen > 1)
 678                                 {
 679                                 if ( rec->data != rec->input)
 680                                 /* we can't write into the input stream:
 681                                  * Can this ever happen?? (steve)
 682                                  */
 683                                 fprintf(stderr,
 684                                         "%s:%d: rec->data != rec->input\n",
 685                                         __FILE__, __LINE__);
 686                                 else if (RAND_bytes(rec->input, ivlen) <= 0)
 687                                         return -1;
 688                                 }
 689                         }
 690                 }
 691         else
 692                 {
 693                 if (EVP_MD_CTX_md(s->read_hash))
 694                         {
 695                         n=EVP_MD_CTX_size(s->read_hash);
 696                         OPENSSL_assert(n >= 0);
 697                         }
 698                 ds=s->enc_read_ctx;
 699                 rec= &(s->s3->rrec);
 700                 if (s->enc_read_ctx == NULL)
 701                         enc=NULL;
 702                 else
 703                         enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
 704                 }
 705
 706 #ifdef KSSL_DEBUG
 707         printf("tls1_enc(%d)\n", send);
 708 #endif    /* KSSL_DEBUG */
 709
 710         if ((s->session == NULL) || (ds == NULL) ||
 711                 (enc == NULL))
 712                 {
 713                 memmove(rec->data,rec->input,rec->length);
 714                 rec->input=rec->data;
 715                 }
 716         else
 717                 {
 718                 l=rec->length;
 719                 bs=EVP_CIPHER_block_size(ds->cipher);
 720
 721                 if ((bs != 1) && send)
 722                         {
 723                         i=bs-((int)l%bs);
 724
 725                         /* Add weird padding of upto 256 bytes */
 726
 727                         /* we need to add 'i' padding bytes of value j */
 728                         j=i-1;
 729                         if (s->options & SSL_OP_TLS_BLOCK_PADDING_BUG)
 730                                 {
 731                                 if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
 732                                         j++;
 733                                 }
 734                         for (k=(int)l; k<(int)(l+i); k++)
 735                                 rec->input[k]=j;
 736                         l+=i;
 737                         rec->length+=i;
 738                         }
 739
 740 #ifdef KSSL_DEBUG
 741                 {
 742                 unsigned long ui;
 743                 printf("EVP_Cipher(ds=%p,rec->data=%p,rec->input=%p,l=%ld) ==>\n",
 744                         ds,rec->data,rec->input,l);
 745                 printf("\tEVP_CIPHER_CTX: %d buf_len, %d key_len [%d %d], %d iv_len\n",
 746                         ds->buf_len, ds->cipher->key_len,
 747                         DES_KEY_SZ, DES_SCHEDULE_SZ,
 748                         ds->cipher->iv_len);
 749                 printf("\t\tIV: ");
 750                 for (i=0; i<ds->cipher->iv_len; i++) printf("%02X", ds->iv[i]);
 751                 printf("\n");
 752                 printf("\trec->input=");
 753                 for (ui=0; ui<l; ui++) printf(" %02x", rec->input[ui]);
 754                 printf("\n");
 755                 }
 756 #endif  /* KSSL_DEBUG */
 757
 758                 if (!send)
 759                         {
 760                         if (l == 0 || l%bs != 0)
 761                                 {
 762                                 if (s->version >= TLS1_1_VERSION)
 763                                         return -1;
 764                                 SSLerr(SSL_F_TLS1_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
 765                                 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
 766                                 return 0;
 767                                 }
 768                         }
 769
 770                 EVP_Cipher(ds,rec->data,rec->input,l);
 771
 772 #ifdef KSSL_DEBUG
 773                 {
 774                 unsigned long i;
 775                 printf("\trec->data=");
 776                 for (i=0; i<l; i++)
 777                         printf(" %02x", rec->data[i]);  printf("\n");
 778                 }
 779 #endif  /* KSSL_DEBUG */
 780
 781                 if ((bs != 1) && !send)
 782                         {
 783                         ii=i=rec->data[l-1]; /* padding_length */
 784                         i++;
 785                         /* NB: if compression is in operation the first packet
 786                          * may not be of even length so the padding bug check
 787                          * cannot be performed. This bug workaround has been
 788                          * around since SSLeay so hopefully it is either fixed
 789                          * now or no buggy implementation supports compression
 790                          * [steve]
 791                          */
 792                         if ( (s->options&SSL_OP_TLS_BLOCK_PADDING_BUG)
 793                                 && !s->expand)
 794                                 {
 795                                 /* First packet is even in size, so check */
 796                                 if ((memcmp(s->s3->read_sequence,
 797                                         "\0\0\0\0\0\0\0\0",8) == 0) && !(ii & 1))
 798                                         s->s3->flags|=TLS1_FLAGS_TLS_PADDING_BUG;
 799                                 if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
 800                                         i--;
 801                                 }
 802                         /* TLS 1.0 does not bound the number of padding bytes by the block size.
 803                          * All of them must have value 'padding_length'. */
 804                         if (i > (int)rec->length)
 805                                 {
 806                                 /* Incorrect padding. SSLerr() and ssl3_alert are done
 807                                  * by caller: we don't want to reveal whether this is
 808                                  * a decryption error or a MAC verification failure
 809                                  * (see http://www.openssl.org/~bodo/tls-cbc.txt) */
 810                                 return -1;
 811                                 }
 812                         for (j=(int)(l-i); j<(int)l; j++)
 813                                 {
 814                                 if (rec->data[j] != ii)
 815                                         {
 816                                         /* Incorrect padding */
 817                                         return -1;
 818                                         }
 819                                 }
 820                         rec->length -=i;
 821                         if (s->version >= TLS1_1_VERSION
 822                                 && EVP_CIPHER_CTX_mode(ds) == EVP_CIPH_CBC_MODE)
 823                                 {
 824                                 rec->data += bs;    /* skip the explicit IV */
 825                                 rec->input += bs;
 826                                 rec->length -= bs;
 827                                 }
 828                         }
 829                 }
 830         return(1);
 831         }
 832 int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *out)
 833         {
 834         unsigned int ret;
 835         EVP_MD_CTX ctx, *d=NULL;
 836         int i;
 837
 838         if (s->s3->handshake_buffer)
 839                 if (!ssl3_digest_cached_records(s))
 840                         return 0;
 841
 842         for (i=0;i<SSL_MAX_DIGEST;i++)
 843                 {
 844                   if (s->s3->handshake_dgst[i]&&EVP_MD_CTX_type(s->s3->handshake_dgst[i])==md_nid)
 845                         {
 846                         d=s->s3->handshake_dgst[i];
 847                         break;
 848                         }
 849                 }
 850         if (!d) {
 851                 SSLerr(SSL_F_TLS1_CERT_VERIFY_MAC,SSL_R_NO_REQUIRED_DIGEST);
 852                 return 0;
 853         }
 854
 855         EVP_MD_CTX_init(&ctx);
 856         EVP_MD_CTX_copy_ex(&ctx,d);
 857         EVP_DigestFinal_ex(&ctx,out,&ret);
 858         EVP_MD_CTX_cleanup(&ctx);
 859         return((int)ret);
 860         }
 861
 862 int tls1_final_finish_mac(SSL *s,
 863              const char *str, int slen, unsigned char *out)
 864         {
 865         unsigned int i;
 866         EVP_MD_CTX ctx;
 867         unsigned char buf[2*EVP_MAX_MD_SIZE];
 868         unsigned char *q,buf2[12];
 869         int idx;
 870         long mask;
 871         int err=0;
 872         const EVP_MD *md;
 873
 874         q=buf;
 875
 876         if (s->s3->handshake_buffer)
 877                 if (!ssl3_digest_cached_records(s))
 878                         return 0;
 879
 880         EVP_MD_CTX_init(&ctx);
 881
 882         for (idx=0;ssl_get_handshake_digest(idx,&mask,&md);idx++)
 883                 {
 884                 if (mask & ssl_get_algorithm2(s))
 885                         {
 886                         int hashsize = EVP_MD_size(md);
 887                         if (hashsize < 0 || hashsize > (int)(sizeof buf - (size_t)(q-buf)))
 888                                 {
 889                                 /* internal error: 'buf' is too small for this cipersuite! */
 890                                 err = 1;
 891                                 }
 892                         else
 893                                 {
 894                                 EVP_MD_CTX_copy_ex(&ctx,s->s3->handshake_dgst[idx]);
 895                                 EVP_DigestFinal_ex(&ctx,q,&i);
 896                                 if (i != (unsigned int)hashsize) /* can't really happen */
 897                                         err = 1;
 898                                 q+=i;
 899                                 }
 900                         }
 901                 }
 902
 903         if (!tls1_PRF(ssl_get_algorithm2(s),
 904                         str,slen, buf,(int)(q-buf), NULL,0, NULL,0, NULL,0,
 905                         s->session->master_key,s->session->master_key_length,
 906                         out,buf2,sizeof buf2))
 907                 err = 1;
 908         EVP_MD_CTX_cleanup(&ctx);
 909
 910         if (err)
 911                 return 0;
 912         else
 913                 return sizeof buf2;
 914         }
 915
 916 int tls1_mac(SSL *ssl, unsigned char *md, int send)
 917         {
 918         SSL3_RECORD *rec;
 919         unsigned char *seq;
 920         EVP_MD_CTX *hash;
 921         size_t md_size;
 922         int i;
 923         EVP_MD_CTX hmac, *mac_ctx;
 924         unsigned char buf[5];
 925         int stream_mac = (send?(ssl->mac_flags & SSL_MAC_FLAG_WRITE_MAC_STREAM):(ssl->mac_flags&SSL_MAC_FLAG_READ_MAC_STREAM));
 926         int t;
 927
 928         if (send)
 929                 {
 930                 rec= &(ssl->s3->wrec);
 931                 seq= &(ssl->s3->write_sequence[0]);
 932                 hash=ssl->write_hash;
 933                 }
 934         else
 935                 {
 936                 rec= &(ssl->s3->rrec);
 937                 seq= &(ssl->s3->read_sequence[0]);
 938                 hash=ssl->read_hash;
 939                 }
 940
 941         t=EVP_MD_CTX_size(hash);
 942         OPENSSL_assert(t >= 0);
 943         md_size=t;
 944
 945         buf[0]=rec->type;
 946         buf[1]=(unsigned char)(ssl->version>>8);
 947         buf[2]=(unsigned char)(ssl->version);
 948         buf[3]=rec->length>>8;
 949         buf[4]=rec->length&0xff;
 950
 951         /* I should fix this up TLS TLS TLS TLS TLS XXXXXXXX */
 952         if (stream_mac)
 953                 {
 954                         mac_ctx = hash;
 955                 }
 956                 else
 957                 {
 958                         EVP_MD_CTX_copy(&hmac,hash);
 959                         mac_ctx = &hmac;
 960                 }
 961
 962         if (ssl->version == DTLS1_VERSION || ssl->version == DTLS1_BAD_VER)
 963                 {
 964                 unsigned char dtlsseq[8],*p=dtlsseq;
 965
 966                 s2n(send?ssl->d1->w_epoch:ssl->d1->r_epoch, p);
 967                 memcpy (p,&seq[2],6);
 968
 969                 EVP_DigestSignUpdate(mac_ctx,dtlsseq,8);
 970                 }
 971         else
 972                 EVP_DigestSignUpdate(mac_ctx,seq,8);
 973
 974         EVP_DigestSignUpdate(mac_ctx,buf,5);
 975         EVP_DigestSignUpdate(mac_ctx,rec->input,rec->length);
 976         t=EVP_DigestSignFinal(mac_ctx,md,&md_size);
 977         OPENSSL_assert(t > 0);
 978
 979         if (!stream_mac) EVP_MD_CTX_cleanup(&hmac);
 980 #ifdef TLS_DEBUG
 981 printf("sec=");
 982 {unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",mac_sec[z]); printf("\n"); }
 983 printf("seq=");
 984 {int z; for (z=0; z<8; z++) printf("%02X ",seq[z]); printf("\n"); }
 985 printf("buf=");
 986 {int z; for (z=0; z<5; z++) printf("%02X ",buf[z]); printf("\n"); }
 987 printf("rec=");
 988 {unsigned int z; for (z=0; z<rec->length; z++) printf("%02X ",buf[z]); printf("\n"); }
 989 #endif
 990
 991         if (ssl->version != DTLS1_VERSION && ssl->version != DTLS1_BAD_VER)
 992                 {
 993                 for (i=7; i>=0; i--)
 994                         {
 995                         ++seq[i];
 996                         if (seq[i] != 0) break;
 997                         }
 998                 }
 999
1000 #ifdef TLS_DEBUG
1001 {unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",md[z]); printf("\n"); }
1002 #endif
1003         return(md_size);
1004         }
1005
1006 int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
1007              int len)
1008         {
1009         unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH];
1010         const void *co = NULL, *so = NULL;
1011         int col = 0, sol = 0;
1012
1013
1014 #ifdef KSSL_DEBUG
1015         printf ("tls1_generate_master_secret(%p,%p, %p, %d)\n", s,out, p,len);
1016 #endif  /* KSSL_DEBUG */
1017
1018 #ifdef TLSEXT_TYPE_opaque_prf_input
1019         if (s->s3->client_opaque_prf_input != NULL && s->s3->server_opaque_prf_input != NULL &&
1020             s->s3->client_opaque_prf_input_len > 0 &&
1021             s->s3->client_opaque_prf_input_len == s->s3->server_opaque_prf_input_len)
1022                 {
1023                 co = s->s3->client_opaque_prf_input;
1024                 col = s->s3->server_opaque_prf_input_len;
1025                 so = s->s3->server_opaque_prf_input;
1026                 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) */
1027                 }
1028 #endif
1029
1030         tls1_PRF(ssl_get_algorithm2(s),
1031                 TLS_MD_MASTER_SECRET_CONST,TLS_MD_MASTER_SECRET_CONST_SIZE,
1032                 s->s3->client_random,SSL3_RANDOM_SIZE,
1033                 co, col,
1034                 s->s3->server_random,SSL3_RANDOM_SIZE,
1035                 so, sol,
1036                 p,len,
1037                 s->session->master_key,buff,sizeof buff);
1038 #ifdef SSL_DEBUG
1039         fprintf(stderr, "Premaster Secret:\n");
1040         BIO_dump_fp(stderr, (char *)p, len);
1041         fprintf(stderr, "Client Random:\n");
1042         BIO_dump_fp(stderr, (char *)s->s3->client_random, SSL3_RANDOM_SIZE);
1043         fprintf(stderr, "Server Random:\n");
1044         BIO_dump_fp(stderr, (char *)s->s3->server_random, SSL3_RANDOM_SIZE);
1045         fprintf(stderr, "Master Secret:\n");
1046         BIO_dump_fp(stderr, (char *)s->session->master_key, SSL3_MASTER_SECRET_SIZE);
1047 #endif
1048
1049 #ifdef KSSL_DEBUG
1050         printf ("tls1_generate_master_secret() complete\n");
1051 #endif  /* KSSL_DEBUG */
1052         return(SSL3_MASTER_SECRET_SIZE);
1053         }
1054
1055 int tls1_alert_code(int code)
1056         {
1057         switch (code)
1058                 {
1059         case SSL_AD_CLOSE_NOTIFY:       return(SSL3_AD_CLOSE_NOTIFY);
1060         case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE);
1061         case SSL_AD_BAD_RECORD_MAC:     return(SSL3_AD_BAD_RECORD_MAC);
1062         case SSL_AD_DECRYPTION_FAILED:  return(TLS1_AD_DECRYPTION_FAILED);
1063         case SSL_AD_RECORD_OVERFLOW:    return(TLS1_AD_RECORD_OVERFLOW);
1064         case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE);
1065         case SSL_AD_HANDSHAKE_FAILURE:  return(SSL3_AD_HANDSHAKE_FAILURE);
1066         case SSL_AD_NO_CERTIFICATE:     return(-1);
1067         case SSL_AD_BAD_CERTIFICATE:    return(SSL3_AD_BAD_CERTIFICATE);
1068         case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE);
1069         case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED);
1070         case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED);
1071         case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN);
1072         case SSL_AD_ILLEGAL_PARAMETER:  return(SSL3_AD_ILLEGAL_PARAMETER);
1073         case SSL_AD_UNKNOWN_CA:         return(TLS1_AD_UNKNOWN_CA);
1074         case SSL_AD_ACCESS_DENIED:      return(TLS1_AD_ACCESS_DENIED);
1075         case SSL_AD_DECODE_ERROR:       return(TLS1_AD_DECODE_ERROR);
1076         case SSL_AD_DECRYPT_ERROR:      return(TLS1_AD_DECRYPT_ERROR);
1077         case SSL_AD_EXPORT_RESTRICTION: return(TLS1_AD_EXPORT_RESTRICTION);
1078         case SSL_AD_PROTOCOL_VERSION:   return(TLS1_AD_PROTOCOL_VERSION);
1079         case SSL_AD_INSUFFICIENT_SECURITY:return(TLS1_AD_INSUFFICIENT_SECURITY);
1080         case SSL_AD_INTERNAL_ERROR:     return(TLS1_AD_INTERNAL_ERROR);
1081         case SSL_AD_USER_CANCELLED:     return(TLS1_AD_USER_CANCELLED);
1082         case SSL_AD_NO_RENEGOTIATION:   return(TLS1_AD_NO_RENEGOTIATION);
1083         case SSL_AD_UNSUPPORTED_EXTENSION: return(TLS1_AD_UNSUPPORTED_EXTENSION);
1084         case SSL_AD_CERTIFICATE_UNOBTAINABLE: return(TLS1_AD_CERTIFICATE_UNOBTAINABLE);
1085         case SSL_AD_UNRECOGNIZED_NAME:  return(TLS1_AD_UNRECOGNIZED_NAME);
1086         case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: return(TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE);
1087         case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: return(TLS1_AD_BAD_CERTIFICATE_HASH_VALUE);
1088         case SSL_AD_UNKNOWN_PSK_IDENTITY:return(TLS1_AD_UNKNOWN_PSK_IDENTITY);
1089 #ifndef OPENSSL_NO_SRP
1090         case SSL_AD_MISSING_SRP_USERNAME:return(TLS1_AD_MISSING_SRP_USERNAME);
1091 #endif
1092 #if 0 /* not appropriate for TLS, not used for DTLS */
1093         case DTLS1_AD_MISSING_HANDSHAKE_MESSAGE: return
1094                                           (DTLS1_AD_MISSING_HANDSHAKE_MESSAGE);
1095 #endif
1096         default:                        return(-1);
1097                 }
1098         }
1099
1100 int SSL_tls1_key_exporter(SSL *s, unsigned char *label, int label_len,
1101                            unsigned char *context, int context_len,
1102                            unsigned char *out, int olen)
1103         {
1104         unsigned char *tmp;
1105         int rv;
1106
1107         tmp = OPENSSL_malloc(olen);
1108
1109         if (!tmp)
1110                 return 0;
1111
1112         rv = tls1_PRF(ssl_get_algorithm2(s),
1113                          label, label_len,
1114                          s->s3->client_random,SSL3_RANDOM_SIZE,
1115                          s->s3->server_random,SSL3_RANDOM_SIZE,
1116                          context, context_len, NULL, 0,
1117                          s->session->master_key, s->session->master_key_length,
1118                          out, tmp, olen);
1119
1120         OPENSSL_free(tmp);
1121         return rv;
1122         }