ssl/s3_enc.c

   1 /*
   2  * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
   3  * Copyright 2005 Nokia. All rights reserved.
   4  *
   5  * Licensed under the Apache License 2.0 (the "License").  You may not use
   6  * this file except in compliance with the License.  You can obtain a copy
   7  * in the file LICENSE in the source distribution or at
   8  * https://www.openssl.org/source/license.html
   9  */
  10
  11 #include <stdio.h>
  12 #include "ssl_locl.h"
  13 #include <openssl/evp.h>
  14 #include <openssl/md5.h>
  15 #include <openssl/core_names.h>
  16 #include "internal/cryptlib.h"
  17
  18 static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num)
  19 {
  20     EVP_MD_CTX *m5;
  21     EVP_MD_CTX *s1;
  22     unsigned char buf[16], smd[SHA_DIGEST_LENGTH];
  23     unsigned char c = 'A';
  24     unsigned int i, j, k;
  25     int ret = 0;
  26
  27 #ifdef CHARSET_EBCDIC
  28     c = os_toascii[c];          /* 'A' in ASCII */
  29 #endif
  30     k = 0;
  31     m5 = EVP_MD_CTX_new();
  32     s1 = EVP_MD_CTX_new();
  33     if (m5 == NULL || s1 == NULL) {
  34         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK,
  35                  ERR_R_MALLOC_FAILURE);
  36         goto err;
  37     }
  38     EVP_MD_CTX_set_flags(m5, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
  39     for (i = 0; (int)i < num; i += MD5_DIGEST_LENGTH) {
  40         k++;
  41         if (k > sizeof(buf)) {
  42             /* bug: 'buf' is too small for this ciphersuite */
  43             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK,
  44                      ERR_R_INTERNAL_ERROR);
  45             goto err;
  46         }
  47
  48         for (j = 0; j < k; j++)
  49             buf[j] = c;
  50         c++;
  51         if (!EVP_DigestInit_ex(s1, EVP_sha1(), NULL)
  52             || !EVP_DigestUpdate(s1, buf, k)
  53             || !EVP_DigestUpdate(s1, s->session->master_key,
  54                                  s->session->master_key_length)
  55             || !EVP_DigestUpdate(s1, s->s3.server_random, SSL3_RANDOM_SIZE)
  56             || !EVP_DigestUpdate(s1, s->s3.client_random, SSL3_RANDOM_SIZE)
  57             || !EVP_DigestFinal_ex(s1, smd, NULL)
  58             || !EVP_DigestInit_ex(m5, EVP_md5(), NULL)
  59             || !EVP_DigestUpdate(m5, s->session->master_key,
  60                                  s->session->master_key_length)
  61             || !EVP_DigestUpdate(m5, smd, SHA_DIGEST_LENGTH)) {
  62             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK,
  63                      ERR_R_INTERNAL_ERROR);
  64             goto err;
  65         }
  66         if ((int)(i + MD5_DIGEST_LENGTH) > num) {
  67             if (!EVP_DigestFinal_ex(m5, smd, NULL)) {
  68                 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
  69                          SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR);
  70                 goto err;
  71             }
  72             memcpy(km, smd, (num - i));
  73         } else {
  74             if (!EVP_DigestFinal_ex(m5, km, NULL)) {
  75                 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
  76                          SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR);
  77                 goto err;
  78             }
  79         }
  80
  81         km += MD5_DIGEST_LENGTH;
  82     }
  83     OPENSSL_cleanse(smd, sizeof(smd));
  84     ret = 1;
  85  err:
  86     EVP_MD_CTX_free(m5);
  87     EVP_MD_CTX_free(s1);
  88     return ret;
  89 }
  90
  91 int ssl3_change_cipher_state(SSL *s, int which)
  92 {
  93     unsigned char *p, *mac_secret;
  94     unsigned char *ms, *key, *iv;
  95     EVP_CIPHER_CTX *dd;
  96     const EVP_CIPHER *c;
  97 #ifndef OPENSSL_NO_COMP
  98     COMP_METHOD *comp;
  99 #endif
 100     const EVP_MD *m;
 101     int mdi;
 102     size_t n, i, j, k, cl;
 103     int reuse_dd = 0;
 104
 105     c = s->s3.tmp.new_sym_enc;
 106     m = s->s3.tmp.new_hash;
 107     /* m == NULL will lead to a crash later */
 108     if (!ossl_assert(m != NULL)) {
 109         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
 110                  ERR_R_INTERNAL_ERROR);
 111         goto err;
 112     }
 113 #ifndef OPENSSL_NO_COMP
 114     if (s->s3.tmp.new_compression == NULL)
 115         comp = NULL;
 116     else
 117         comp = s->s3.tmp.new_compression->method;
 118 #endif
 119
 120     if (which & SSL3_CC_READ) {
 121         if (s->enc_read_ctx != NULL) {
 122             reuse_dd = 1;
 123         } else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == NULL) {
 124             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
 125                      ERR_R_MALLOC_FAILURE);
 126             goto err;
 127         } else {
 128             /*
 129              * make sure it's initialised in case we exit later with an error
 130              */
 131             EVP_CIPHER_CTX_reset(s->enc_read_ctx);
 132         }
 133         dd = s->enc_read_ctx;
 134
 135         if (ssl_replace_hash(&s->read_hash, m) == NULL) {
 136             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
 137                      ERR_R_INTERNAL_ERROR);
 138             goto err;
 139         }
 140 #ifndef OPENSSL_NO_COMP
 141         /* COMPRESS */
 142         COMP_CTX_free(s->expand);
 143         s->expand = NULL;
 144         if (comp != NULL) {
 145             s->expand = COMP_CTX_new(comp);
 146             if (s->expand == NULL) {
 147                 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
 148                          SSL_F_SSL3_CHANGE_CIPHER_STATE,
 149                          SSL_R_COMPRESSION_LIBRARY_ERROR);
 150                 goto err;
 151             }
 152         }
 153 #endif
 154         RECORD_LAYER_reset_read_sequence(&s->rlayer);
 155         mac_secret = &(s->s3.read_mac_secret[0]);
 156     } else {
 157         s->statem.enc_write_state = ENC_WRITE_STATE_INVALID;
 158         if (s->enc_write_ctx != NULL) {
 159             reuse_dd = 1;
 160         } else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL) {
 161             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
 162                      ERR_R_MALLOC_FAILURE);
 163             goto err;
 164         } else {
 165             /*
 166              * make sure it's initialised in case we exit later with an error
 167              */
 168             EVP_CIPHER_CTX_reset(s->enc_write_ctx);
 169         }
 170         dd = s->enc_write_ctx;
 171         if (ssl_replace_hash(&s->write_hash, m) == NULL) {
 172             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
 173                      ERR_R_MALLOC_FAILURE);
 174             goto err;
 175         }
 176 #ifndef OPENSSL_NO_COMP
 177         /* COMPRESS */
 178         COMP_CTX_free(s->compress);
 179         s->compress = NULL;
 180         if (comp != NULL) {
 181             s->compress = COMP_CTX_new(comp);
 182             if (s->compress == NULL) {
 183                 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
 184                          SSL_F_SSL3_CHANGE_CIPHER_STATE,
 185                          SSL_R_COMPRESSION_LIBRARY_ERROR);
 186                 goto err;
 187             }
 188         }
 189 #endif
 190         RECORD_LAYER_reset_write_sequence(&s->rlayer);
 191         mac_secret = &(s->s3.write_mac_secret[0]);
 192     }
 193
 194     if (reuse_dd)
 195         EVP_CIPHER_CTX_reset(dd);
 196
 197     p = s->s3.tmp.key_block;
 198     mdi = EVP_MD_size(m);
 199     if (mdi < 0) {
 200         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
 201                  ERR_R_INTERNAL_ERROR);
 202         goto err;
 203     }
 204     i = mdi;
 205     cl = EVP_CIPHER_key_length(c);
 206     j = cl;
 207     k = EVP_CIPHER_iv_length(c);
 208     if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
 209         (which == SSL3_CHANGE_CIPHER_SERVER_READ)) {
 210         ms = &(p[0]);
 211         n = i + i;
 212         key = &(p[n]);
 213         n += j + j;
 214         iv = &(p[n]);
 215         n += k + k;
 216     } else {
 217         n = i;
 218         ms = &(p[n]);
 219         n += i + j;
 220         key = &(p[n]);
 221         n += j + k;
 222         iv = &(p[n]);
 223         n += k;
 224     }
 225
 226     if (n > s->s3.tmp.key_block_length) {
 227         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
 228                  ERR_R_INTERNAL_ERROR);
 229         goto err;
 230     }
 231
 232     memcpy(mac_secret, ms, i);
 233
 234     if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) {
 235         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
 236                  ERR_R_INTERNAL_ERROR);
 237         goto err;
 238     }
 239
 240     s->statem.enc_write_state = ENC_WRITE_STATE_VALID;
 241     return 1;
 242  err:
 243     return 0;
 244 }
 245
 246 int ssl3_setup_key_block(SSL *s)
 247 {
 248     unsigned char *p;
 249     const EVP_CIPHER *c;
 250     const EVP_MD *hash;
 251     int num;
 252     int ret = 0;
 253     SSL_COMP *comp;
 254
 255     if (s->s3.tmp.key_block_length != 0)
 256         return 1;
 257
 258     if (!ssl_cipher_get_evp(s->session, &c, &hash, NULL, NULL, &comp, 0)) {
 259         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK,
 260                  SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
 261         return 0;
 262     }
 263
 264     s->s3.tmp.new_sym_enc = c;
 265     s->s3.tmp.new_hash = hash;
 266 #ifdef OPENSSL_NO_COMP
 267     s->s3.tmp.new_compression = NULL;
 268 #else
 269     s->s3.tmp.new_compression = comp;
 270 #endif
 271
 272     num = EVP_MD_size(hash);
 273     if (num < 0)
 274         return 0;
 275
 276     num = EVP_CIPHER_key_length(c) + num + EVP_CIPHER_iv_length(c);
 277     num *= 2;
 278
 279     ssl3_cleanup_key_block(s);
 280
 281     if ((p = OPENSSL_malloc(num)) == NULL) {
 282         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK,
 283                  ERR_R_MALLOC_FAILURE);
 284         return 0;
 285     }
 286
 287     s->s3.tmp.key_block_length = num;
 288     s->s3.tmp.key_block = p;
 289
 290     /* Calls SSLfatal() as required */
 291     ret = ssl3_generate_key_block(s, p, num);
 292
 293     if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) {
 294         /*
 295          * enable vulnerability countermeasure for CBC ciphers with known-IV
 296          * problem (http://www.openssl.org/~bodo/tls-cbc.txt)
 297          */
 298         s->s3.need_empty_fragments = 1;
 299
 300         if (s->session->cipher != NULL) {
 301             if (s->session->cipher->algorithm_enc == SSL_eNULL)
 302                 s->s3.need_empty_fragments = 0;
 303
 304 #ifndef OPENSSL_NO_RC4
 305             if (s->session->cipher->algorithm_enc == SSL_RC4)
 306                 s->s3.need_empty_fragments = 0;
 307 #endif
 308         }
 309     }
 310
 311     return ret;
 312 }
 313
 314 void ssl3_cleanup_key_block(SSL *s)
 315 {
 316     OPENSSL_clear_free(s->s3.tmp.key_block, s->s3.tmp.key_block_length);
 317     s->s3.tmp.key_block = NULL;
 318     s->s3.tmp.key_block_length = 0;
 319 }
 320
 321 int ssl3_init_finished_mac(SSL *s)
 322 {
 323     BIO *buf = BIO_new(BIO_s_mem());
 324
 325     if (buf == NULL) {
 326         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_INIT_FINISHED_MAC,
 327                  ERR_R_MALLOC_FAILURE);
 328         return 0;
 329     }
 330     ssl3_free_digest_list(s);
 331     s->s3.handshake_buffer = buf;
 332     (void)BIO_set_close(s->s3.handshake_buffer, BIO_CLOSE);
 333     return 1;
 334 }
 335
 336 /*
 337  * Free digest list. Also frees handshake buffer since they are always freed
 338  * together.
 339  */
 340
 341 void ssl3_free_digest_list(SSL *s)
 342 {
 343     BIO_free(s->s3.handshake_buffer);
 344     s->s3.handshake_buffer = NULL;
 345     EVP_MD_CTX_free(s->s3.handshake_dgst);
 346     s->s3.handshake_dgst = NULL;
 347 }
 348
 349 int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len)
 350 {
 351     int ret;
 352
 353     if (s->s3.handshake_dgst == NULL) {
 354         /* Note: this writes to a memory BIO so a failure is a fatal error */
 355         if (len > INT_MAX) {
 356             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC,
 357                      SSL_R_OVERFLOW_ERROR);
 358             return 0;
 359         }
 360         ret = BIO_write(s->s3.handshake_buffer, (void *)buf, (int)len);
 361         if (ret <= 0 || ret != (int)len) {
 362             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC,
 363                      ERR_R_INTERNAL_ERROR);
 364             return 0;
 365         }
 366     } else {
 367         ret = EVP_DigestUpdate(s->s3.handshake_dgst, buf, len);
 368         if (!ret) {
 369             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC,
 370                      ERR_R_INTERNAL_ERROR);
 371             return 0;
 372         }
 373     }
 374     return 1;
 375 }
 376
 377 int ssl3_digest_cached_records(SSL *s, int keep)
 378 {
 379     const EVP_MD *md;
 380     long hdatalen;
 381     void *hdata;
 382
 383     if (s->s3.handshake_dgst == NULL) {
 384         hdatalen = BIO_get_mem_data(s->s3.handshake_buffer, &hdata);
 385         if (hdatalen <= 0) {
 386             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS,
 387                      SSL_R_BAD_HANDSHAKE_LENGTH);
 388             return 0;
 389         }
 390
 391         s->s3.handshake_dgst = EVP_MD_CTX_new();
 392         if (s->s3.handshake_dgst == NULL) {
 393             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS,
 394                      ERR_R_MALLOC_FAILURE);
 395             return 0;
 396         }
 397
 398         md = ssl_handshake_md(s);
 399         if (md == NULL || !EVP_DigestInit_ex(s->s3.handshake_dgst, md, NULL)
 400             || !EVP_DigestUpdate(s->s3.handshake_dgst, hdata, hdatalen)) {
 401             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS,
 402                      ERR_R_INTERNAL_ERROR);
 403             return 0;
 404         }
 405     }
 406     if (keep == 0) {
 407         BIO_free(s->s3.handshake_buffer);
 408         s->s3.handshake_buffer = NULL;
 409     }
 410
 411     return 1;
 412 }
 413
 414 void ssl3_digest_master_key_set_params(const SSL_SESSION *session,
 415                                        OSSL_PARAM params[])
 416 {
 417     int n = 0;
 418     params[n++] = OSSL_PARAM_construct_octet_string(OSSL_DIGEST_PARAM_SSL3_MS,
 419                                                     (void *)session->master_key,
 420                                                     session->master_key_length,
 421                                                     NULL);
 422     params[n++] = OSSL_PARAM_construct_end();
 423 }
 424
 425 size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t len,
 426                              unsigned char *p)
 427 {
 428     int ret;
 429     EVP_MD_CTX *ctx = NULL;
 430
 431     if (!ssl3_digest_cached_records(s, 0)) {
 432         /* SSLfatal() already called */
 433         return 0;
 434     }
 435
 436     if (EVP_MD_CTX_type(s->s3.handshake_dgst) != NID_md5_sha1) {
 437         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
 438                  SSL_R_NO_REQUIRED_DIGEST);
 439         return 0;
 440     }
 441
 442     ctx = EVP_MD_CTX_new();
 443     if (ctx == NULL) {
 444         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
 445                  ERR_R_MALLOC_FAILURE);
 446         return 0;
 447     }
 448     if (!EVP_MD_CTX_copy_ex(ctx, s->s3.handshake_dgst)) {
 449         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
 450                  ERR_R_INTERNAL_ERROR);
 451         ret = 0;
 452         goto err;
 453     }
 454
 455     ret = EVP_MD_CTX_size(ctx);
 456     if (ret < 0) {
 457         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
 458                  ERR_R_INTERNAL_ERROR);
 459         ret = 0;
 460         goto err;
 461     }
 462
 463     if (sender != NULL) {
 464         OSSL_PARAM digest_cmd_params[3];
 465
 466         ssl3_digest_master_key_set_params(s->session, digest_cmd_params);
 467
 468         if (EVP_DigestUpdate(ctx, sender, len) <= 0
 469             || EVP_MD_CTX_set_params(ctx, digest_cmd_params) <= 0
 470             || EVP_DigestFinal_ex(ctx, p, NULL) <= 0) {
 471                 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
 472                          ERR_R_INTERNAL_ERROR);
 473                 ret = 0;
 474         }
 475     }
 476
 477  err:
 478     EVP_MD_CTX_free(ctx);
 479
 480     return ret;
 481 }
 482
 483 int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
 484                                 size_t len, size_t *secret_size)
 485 {
 486     static const unsigned char *salt[3] = {
 487 #ifndef CHARSET_EBCDIC
 488         (const unsigned char *)"A",
 489         (const unsigned char *)"BB",
 490         (const unsigned char *)"CCC",
 491 #else
 492         (const unsigned char *)"\x41",
 493         (const unsigned char *)"\x42\x42",
 494         (const unsigned char *)"\x43\x43\x43",
 495 #endif
 496     };
 497     unsigned char buf[EVP_MAX_MD_SIZE];
 498     EVP_MD_CTX *ctx = EVP_MD_CTX_new();
 499     int i, ret = 1;
 500     unsigned int n;
 501     size_t ret_secret_size = 0;
 502
 503     if (ctx == NULL) {
 504         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_MASTER_SECRET,
 505                  ERR_R_MALLOC_FAILURE);
 506         return 0;
 507     }
 508     for (i = 0; i < 3; i++) {
 509         if (EVP_DigestInit_ex(ctx, s->ctx->sha1, NULL) <= 0
 510             || EVP_DigestUpdate(ctx, salt[i],
 511                                 strlen((const char *)salt[i])) <= 0
 512             || EVP_DigestUpdate(ctx, p, len) <= 0
 513             || EVP_DigestUpdate(ctx, &(s->s3.client_random[0]),
 514                                 SSL3_RANDOM_SIZE) <= 0
 515             || EVP_DigestUpdate(ctx, &(s->s3.server_random[0]),
 516                                 SSL3_RANDOM_SIZE) <= 0
 517                /* TODO(size_t) : convert me */
 518             || EVP_DigestFinal_ex(ctx, buf, &n) <= 0
 519             || EVP_DigestInit_ex(ctx, s->ctx->md5, NULL) <= 0
 520             || EVP_DigestUpdate(ctx, p, len) <= 0
 521             || EVP_DigestUpdate(ctx, buf, n) <= 0
 522             || EVP_DigestFinal_ex(ctx, out, &n) <= 0) {
 523             SSLfatal(s, SSL_AD_INTERNAL_ERROR,
 524                      SSL_F_SSL3_GENERATE_MASTER_SECRET, ERR_R_INTERNAL_ERROR);
 525             ret = 0;
 526             break;
 527         }
 528         out += n;
 529         ret_secret_size += n;
 530     }
 531     EVP_MD_CTX_free(ctx);
 532
 533     OPENSSL_cleanse(buf, sizeof(buf));
 534     if (ret)
 535         *secret_size = ret_secret_size;
 536     return ret;
 537 }
 538
 539 int ssl3_alert_code(int code)
 540 {
 541     switch (code) {
 542     case SSL_AD_CLOSE_NOTIFY:
 543         return SSL3_AD_CLOSE_NOTIFY;
 544     case SSL_AD_UNEXPECTED_MESSAGE:
 545         return SSL3_AD_UNEXPECTED_MESSAGE;
 546     case SSL_AD_BAD_RECORD_MAC:
 547         return SSL3_AD_BAD_RECORD_MAC;
 548     case SSL_AD_DECRYPTION_FAILED:
 549         return SSL3_AD_BAD_RECORD_MAC;
 550     case SSL_AD_RECORD_OVERFLOW:
 551         return SSL3_AD_BAD_RECORD_MAC;
 552     case SSL_AD_DECOMPRESSION_FAILURE:
 553         return SSL3_AD_DECOMPRESSION_FAILURE;
 554     case SSL_AD_HANDSHAKE_FAILURE:
 555         return SSL3_AD_HANDSHAKE_FAILURE;
 556     case SSL_AD_NO_CERTIFICATE:
 557         return SSL3_AD_NO_CERTIFICATE;
 558     case SSL_AD_BAD_CERTIFICATE:
 559         return SSL3_AD_BAD_CERTIFICATE;
 560     case SSL_AD_UNSUPPORTED_CERTIFICATE:
 561         return SSL3_AD_UNSUPPORTED_CERTIFICATE;
 562     case SSL_AD_CERTIFICATE_REVOKED:
 563         return SSL3_AD_CERTIFICATE_REVOKED;
 564     case SSL_AD_CERTIFICATE_EXPIRED:
 565         return SSL3_AD_CERTIFICATE_EXPIRED;
 566     case SSL_AD_CERTIFICATE_UNKNOWN:
 567         return SSL3_AD_CERTIFICATE_UNKNOWN;
 568     case SSL_AD_ILLEGAL_PARAMETER:
 569         return SSL3_AD_ILLEGAL_PARAMETER;
 570     case SSL_AD_UNKNOWN_CA:
 571         return SSL3_AD_BAD_CERTIFICATE;
 572     case SSL_AD_ACCESS_DENIED:
 573         return SSL3_AD_HANDSHAKE_FAILURE;
 574     case SSL_AD_DECODE_ERROR:
 575         return SSL3_AD_HANDSHAKE_FAILURE;
 576     case SSL_AD_DECRYPT_ERROR:
 577         return SSL3_AD_HANDSHAKE_FAILURE;
 578     case SSL_AD_EXPORT_RESTRICTION:
 579         return SSL3_AD_HANDSHAKE_FAILURE;
 580     case SSL_AD_PROTOCOL_VERSION:
 581         return SSL3_AD_HANDSHAKE_FAILURE;
 582     case SSL_AD_INSUFFICIENT_SECURITY:
 583         return SSL3_AD_HANDSHAKE_FAILURE;
 584     case SSL_AD_INTERNAL_ERROR:
 585         return SSL3_AD_HANDSHAKE_FAILURE;
 586     case SSL_AD_USER_CANCELLED:
 587         return SSL3_AD_HANDSHAKE_FAILURE;
 588     case SSL_AD_NO_RENEGOTIATION:
 589         return -1;            /* Don't send it :-) */
 590     case SSL_AD_UNSUPPORTED_EXTENSION:
 591         return SSL3_AD_HANDSHAKE_FAILURE;
 592     case SSL_AD_CERTIFICATE_UNOBTAINABLE:
 593         return SSL3_AD_HANDSHAKE_FAILURE;
 594     case SSL_AD_UNRECOGNIZED_NAME:
 595         return SSL3_AD_HANDSHAKE_FAILURE;
 596     case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE:
 597         return SSL3_AD_HANDSHAKE_FAILURE;
 598     case SSL_AD_BAD_CERTIFICATE_HASH_VALUE:
 599         return SSL3_AD_HANDSHAKE_FAILURE;
 600     case SSL_AD_UNKNOWN_PSK_IDENTITY:
 601         return TLS1_AD_UNKNOWN_PSK_IDENTITY;
 602     case SSL_AD_INAPPROPRIATE_FALLBACK:
 603         return TLS1_AD_INAPPROPRIATE_FALLBACK;
 604     case SSL_AD_NO_APPLICATION_PROTOCOL:
 605         return TLS1_AD_NO_APPLICATION_PROTOCOL;
 606     case SSL_AD_CERTIFICATE_REQUIRED:
 607         return SSL_AD_HANDSHAKE_FAILURE;
 608     default:
 609         return -1;
 610     }
 611 }