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 "internal/cryptlib.h"
  16
  17 static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num)
  18 {
  19     EVP_MD_CTX *m5;
  20     EVP_MD_CTX *s1;
  21     unsigned char buf[16], smd[SHA_DIGEST_LENGTH];
  22     unsigned char c = 'A';
  23     unsigned int i, j, k;
  24     int ret = 0;
  25
  26 #ifdef CHARSET_EBCDIC
  27     c = os_toascii[c];          /* 'A' in ASCII */
  28 #endif
  29     k = 0;
  30     m5 = EVP_MD_CTX_new();
  31     s1 = EVP_MD_CTX_new();
  32     if (m5 == NULL || s1 == NULL) {
  33         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK,
  34                  ERR_R_MALLOC_FAILURE);
  35         goto err;
  36     }
  37     EVP_MD_CTX_set_flags(m5, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
  38     for (i = 0; (int)i < num; i += MD5_DIGEST_LENGTH) {
  39         k++;
  40         if (k > sizeof(buf)) {
  41             /* bug: 'buf' is too small for this ciphersuite */
  42             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK,
  43                      ERR_R_INTERNAL_ERROR);
  44             goto err;
  45         }
  46
  47         for (j = 0; j < k; j++)
  48             buf[j] = c;
  49         c++;
  50         if (!EVP_DigestInit_ex(s1, EVP_sha1(), NULL)
  51             || !EVP_DigestUpdate(s1, buf, k)
  52             || !EVP_DigestUpdate(s1, s->session->master_key,
  53                                  s->session->master_key_length)
  54             || !EVP_DigestUpdate(s1, s->s3->server_random, SSL3_RANDOM_SIZE)
  55             || !EVP_DigestUpdate(s1, s->s3->client_random, SSL3_RANDOM_SIZE)
  56             || !EVP_DigestFinal_ex(s1, smd, NULL)
  57             || !EVP_DigestInit_ex(m5, EVP_md5(), NULL)
  58             || !EVP_DigestUpdate(m5, s->session->master_key,
  59                                  s->session->master_key_length)
  60             || !EVP_DigestUpdate(m5, smd, SHA_DIGEST_LENGTH)) {
  61             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK,
  62                      ERR_R_INTERNAL_ERROR);
  63             goto err;
  64         }
  65         if ((int)(i + MD5_DIGEST_LENGTH) > num) {
  66             if (!EVP_DigestFinal_ex(m5, smd, NULL)) {
  67                 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
  68                          SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR);
  69                 goto err;
  70             }
  71             memcpy(km, smd, (num - i));
  72         } else {
  73             if (!EVP_DigestFinal_ex(m5, km, NULL)) {
  74                 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
  75                          SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR);
  76                 goto err;
  77             }
  78         }
  79
  80         km += MD5_DIGEST_LENGTH;
  81     }
  82     OPENSSL_cleanse(smd, sizeof(smd));
  83     ret = 1;
  84  err:
  85     EVP_MD_CTX_free(m5);
  86     EVP_MD_CTX_free(s1);
  87     return ret;
  88 }
  89
  90 int ssl3_change_cipher_state(SSL *s, int which)
  91 {
  92     unsigned char *p, *mac_secret;
  93     unsigned char *ms, *key, *iv;
  94     EVP_CIPHER_CTX *dd;
  95     const EVP_CIPHER *c;
  96 #ifndef OPENSSL_NO_COMP
  97     COMP_METHOD *comp;
  98 #endif
  99     const EVP_MD *m;
 100     int mdi;
 101     size_t n, i, j, k, cl;
 102     int reuse_dd = 0;
 103
 104     c = s->s3->tmp.new_sym_enc;
 105     m = s->s3->tmp.new_hash;
 106     /* m == NULL will lead to a crash later */
 107     if (!ossl_assert(m != NULL)) {
 108         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
 109                  ERR_R_INTERNAL_ERROR);
 110         goto err;
 111     }
 112 #ifndef OPENSSL_NO_COMP
 113     if (s->s3->tmp.new_compression == NULL)
 114         comp = NULL;
 115     else
 116         comp = s->s3->tmp.new_compression->method;
 117 #endif
 118
 119     if (which & SSL3_CC_READ) {
 120         if (s->enc_read_ctx != NULL) {
 121             reuse_dd = 1;
 122         } else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == NULL) {
 123             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
 124                      ERR_R_MALLOC_FAILURE);
 125             goto err;
 126         } else {
 127             /*
 128              * make sure it's initialised in case we exit later with an error
 129              */
 130             EVP_CIPHER_CTX_reset(s->enc_read_ctx);
 131         }
 132         dd = s->enc_read_ctx;
 133
 134         if (ssl_replace_hash(&s->read_hash, m) == NULL) {
 135             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
 136                      ERR_R_INTERNAL_ERROR);
 137             goto err;
 138         }
 139 #ifndef OPENSSL_NO_COMP
 140         /* COMPRESS */
 141         COMP_CTX_free(s->expand);
 142         s->expand = NULL;
 143         if (comp != NULL) {
 144             s->expand = COMP_CTX_new(comp);
 145             if (s->expand == NULL) {
 146                 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
 147                          SSL_F_SSL3_CHANGE_CIPHER_STATE,
 148                          SSL_R_COMPRESSION_LIBRARY_ERROR);
 149                 goto err;
 150             }
 151         }
 152 #endif
 153         RECORD_LAYER_reset_read_sequence(&s->rlayer);
 154         mac_secret = &(s->s3->read_mac_secret[0]);
 155     } else {
 156         s->statem.enc_write_state = ENC_WRITE_STATE_INVALID;
 157         if (s->enc_write_ctx != NULL) {
 158             reuse_dd = 1;
 159         } else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL) {
 160             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
 161                      ERR_R_MALLOC_FAILURE);
 162             goto err;
 163         } else {
 164             /*
 165              * make sure it's initialised in case we exit later with an error
 166              */
 167             EVP_CIPHER_CTX_reset(s->enc_write_ctx);
 168         }
 169         dd = s->enc_write_ctx;
 170         if (ssl_replace_hash(&s->write_hash, m) == NULL) {
 171             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
 172                      ERR_R_MALLOC_FAILURE);
 173             goto err;
 174         }
 175 #ifndef OPENSSL_NO_COMP
 176         /* COMPRESS */
 177         COMP_CTX_free(s->compress);
 178         s->compress = NULL;
 179         if (comp != NULL) {
 180             s->compress = COMP_CTX_new(comp);
 181             if (s->compress == NULL) {
 182                 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
 183                          SSL_F_SSL3_CHANGE_CIPHER_STATE,
 184                          SSL_R_COMPRESSION_LIBRARY_ERROR);
 185                 goto err;
 186             }
 187         }
 188 #endif
 189         RECORD_LAYER_reset_write_sequence(&s->rlayer);
 190         mac_secret = &(s->s3->write_mac_secret[0]);
 191     }
 192
 193     if (reuse_dd)
 194         EVP_CIPHER_CTX_reset(dd);
 195
 196     p = s->s3->tmp.key_block;
 197     mdi = EVP_MD_size(m);
 198     if (mdi < 0) {
 199         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
 200                  ERR_R_INTERNAL_ERROR);
 201         goto err;
 202     }
 203     i = mdi;
 204     cl = EVP_CIPHER_key_length(c);
 205     j = cl;
 206     k = EVP_CIPHER_iv_length(c);
 207     if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
 208         (which == SSL3_CHANGE_CIPHER_SERVER_READ)) {
 209         ms = &(p[0]);
 210         n = i + i;
 211         key = &(p[n]);
 212         n += j + j;
 213         iv = &(p[n]);
 214         n += k + k;
 215     } else {
 216         n = i;
 217         ms = &(p[n]);
 218         n += i + j;
 219         key = &(p[n]);
 220         n += j + k;
 221         iv = &(p[n]);
 222         n += k;
 223     }
 224
 225     if (n > s->s3->tmp.key_block_length) {
 226         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
 227                  ERR_R_INTERNAL_ERROR);
 228         goto err;
 229     }
 230
 231     memcpy(mac_secret, ms, i);
 232
 233     if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) {
 234         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE,
 235                  ERR_R_INTERNAL_ERROR);
 236         goto err;
 237     }
 238
 239     s->statem.enc_write_state = ENC_WRITE_STATE_VALID;
 240     return 1;
 241  err:
 242     return 0;
 243 }
 244
 245 int ssl3_setup_key_block(SSL *s)
 246 {
 247     unsigned char *p;
 248     const EVP_CIPHER *c;
 249     const EVP_MD *hash;
 250     int num;
 251     int ret = 0;
 252     SSL_COMP *comp;
 253
 254     if (s->s3->tmp.key_block_length != 0)
 255         return 1;
 256
 257     if (!ssl_cipher_get_evp(s->session, &c, &hash, NULL, NULL, &comp, 0)) {
 258         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK,
 259                  SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
 260         return 0;
 261     }
 262
 263     s->s3->tmp.new_sym_enc = c;
 264     s->s3->tmp.new_hash = hash;
 265 #ifdef OPENSSL_NO_COMP
 266     s->s3->tmp.new_compression = NULL;
 267 #else
 268     s->s3->tmp.new_compression = comp;
 269 #endif
 270
 271     num = EVP_MD_size(hash);
 272     if (num < 0)
 273         return 0;
 274
 275     num = EVP_CIPHER_key_length(c) + num + EVP_CIPHER_iv_length(c);
 276     num *= 2;
 277
 278     ssl3_cleanup_key_block(s);
 279
 280     if ((p = OPENSSL_malloc(num)) == NULL) {
 281         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK,
 282                  ERR_R_MALLOC_FAILURE);
 283         return 0;
 284     }
 285
 286     s->s3->tmp.key_block_length = num;
 287     s->s3->tmp.key_block = p;
 288
 289     /* Calls SSLfatal() as required */
 290     ret = ssl3_generate_key_block(s, p, num);
 291
 292     if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) {
 293         /*
 294          * enable vulnerability countermeasure for CBC ciphers with known-IV
 295          * problem (http://www.openssl.org/~bodo/tls-cbc.txt)
 296          */
 297         s->s3->need_empty_fragments = 1;
 298
 299         if (s->session->cipher != NULL) {
 300             if (s->session->cipher->algorithm_enc == SSL_eNULL)
 301                 s->s3->need_empty_fragments = 0;
 302
 303 #ifndef OPENSSL_NO_RC4
 304             if (s->session->cipher->algorithm_enc == SSL_RC4)
 305                 s->s3->need_empty_fragments = 0;
 306 #endif
 307         }
 308     }
 309
 310     return ret;
 311 }
 312
 313 void ssl3_cleanup_key_block(SSL *s)
 314 {
 315     OPENSSL_clear_free(s->s3->tmp.key_block, s->s3->tmp.key_block_length);
 316     s->s3->tmp.key_block = NULL;
 317     s->s3->tmp.key_block_length = 0;
 318 }
 319
 320 int ssl3_init_finished_mac(SSL *s)
 321 {
 322     BIO *buf = BIO_new(BIO_s_mem());
 323
 324     if (buf == NULL) {
 325         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_INIT_FINISHED_MAC,
 326                  ERR_R_MALLOC_FAILURE);
 327         return 0;
 328     }
 329     ssl3_free_digest_list(s);
 330     s->s3->handshake_buffer = buf;
 331     (void)BIO_set_close(s->s3->handshake_buffer, BIO_CLOSE);
 332     return 1;
 333 }
 334
 335 /*
 336  * Free digest list. Also frees handshake buffer since they are always freed
 337  * together.
 338  */
 339
 340 void ssl3_free_digest_list(SSL *s)
 341 {
 342     BIO_free(s->s3->handshake_buffer);
 343     s->s3->handshake_buffer = NULL;
 344     EVP_MD_CTX_free(s->s3->handshake_dgst);
 345     s->s3->handshake_dgst = NULL;
 346 }
 347
 348 int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len)
 349 {
 350     int ret;
 351
 352     if (s->s3->handshake_dgst == NULL) {
 353         /* Note: this writes to a memory BIO so a failure is a fatal error */
 354         if (len > INT_MAX) {
 355             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC,
 356                      SSL_R_OVERFLOW_ERROR);
 357             return 0;
 358         }
 359         ret = BIO_write(s->s3->handshake_buffer, (void *)buf, (int)len);
 360         if (ret <= 0 || ret != (int)len) {
 361             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC,
 362                      ERR_R_INTERNAL_ERROR);
 363             return 0;
 364         }
 365     } else {
 366         ret = EVP_DigestUpdate(s->s3->handshake_dgst, buf, len);
 367         if (!ret) {
 368             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC,
 369                      ERR_R_INTERNAL_ERROR);
 370             return 0;
 371         }
 372     }
 373     return 1;
 374 }
 375
 376 int ssl3_digest_cached_records(SSL *s, int keep)
 377 {
 378     const EVP_MD *md;
 379     long hdatalen;
 380     void *hdata;
 381
 382     if (s->s3->handshake_dgst == NULL) {
 383         hdatalen = BIO_get_mem_data(s->s3->handshake_buffer, &hdata);
 384         if (hdatalen <= 0) {
 385             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS,
 386                      SSL_R_BAD_HANDSHAKE_LENGTH);
 387             return 0;
 388         }
 389
 390         s->s3->handshake_dgst = EVP_MD_CTX_new();
 391         if (s->s3->handshake_dgst == NULL) {
 392             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS,
 393                      ERR_R_MALLOC_FAILURE);
 394             return 0;
 395         }
 396
 397         md = ssl_handshake_md(s);
 398         if (md == NULL || !EVP_DigestInit_ex(s->s3->handshake_dgst, md, NULL)
 399             || !EVP_DigestUpdate(s->s3->handshake_dgst, hdata, hdatalen)) {
 400             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS,
 401                      ERR_R_INTERNAL_ERROR);
 402             return 0;
 403         }
 404     }
 405     if (keep == 0) {
 406         BIO_free(s->s3->handshake_buffer);
 407         s->s3->handshake_buffer = NULL;
 408     }
 409
 410     return 1;
 411 }
 412
 413 size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t len,
 414                              unsigned char *p)
 415 {
 416     int ret;
 417     EVP_MD_CTX *ctx = NULL;
 418
 419     if (!ssl3_digest_cached_records(s, 0)) {
 420         /* SSLfatal() already called */
 421         return 0;
 422     }
 423
 424     if (EVP_MD_CTX_type(s->s3->handshake_dgst) != NID_md5_sha1) {
 425         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
 426                  SSL_R_NO_REQUIRED_DIGEST);
 427         return 0;
 428     }
 429
 430     ctx = EVP_MD_CTX_new();
 431     if (ctx == NULL) {
 432         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
 433                  ERR_R_MALLOC_FAILURE);
 434         return 0;
 435     }
 436     if (!EVP_MD_CTX_copy_ex(ctx, s->s3->handshake_dgst)) {
 437         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
 438                  ERR_R_INTERNAL_ERROR);
 439         ret = 0;
 440         goto err;
 441     }
 442
 443     ret = EVP_MD_CTX_size(ctx);
 444     if (ret < 0) {
 445         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
 446                  ERR_R_INTERNAL_ERROR);
 447         ret = 0;
 448         goto err;
 449     }
 450
 451     if ((sender != NULL && EVP_DigestUpdate(ctx, sender, len) <= 0)
 452         || EVP_MD_CTX_ctrl(ctx, EVP_CTRL_SSL3_MASTER_SECRET,
 453                            (int)s->session->master_key_length,
 454                            s->session->master_key) <= 0
 455         || EVP_DigestFinal_ex(ctx, p, NULL) <= 0) {
 456         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC,
 457                  ERR_R_INTERNAL_ERROR);
 458         ret = 0;
 459     }
 460
 461  err:
 462     EVP_MD_CTX_free(ctx);
 463
 464     return ret;
 465 }
 466
 467 int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
 468                                 size_t len, size_t *secret_size)
 469 {
 470     static const unsigned char *salt[3] = {
 471 #ifndef CHARSET_EBCDIC
 472         (const unsigned char *)"A",
 473         (const unsigned char *)"BB",
 474         (const unsigned char *)"CCC",
 475 #else
 476         (const unsigned char *)"\x41",
 477         (const unsigned char *)"\x42\x42",
 478         (const unsigned char *)"\x43\x43\x43",
 479 #endif
 480     };
 481     unsigned char buf[EVP_MAX_MD_SIZE];
 482     EVP_MD_CTX *ctx = EVP_MD_CTX_new();
 483     int i, ret = 1;
 484     unsigned int n;
 485     size_t ret_secret_size = 0;
 486
 487     if (ctx == NULL) {
 488         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_MASTER_SECRET,
 489                  ERR_R_MALLOC_FAILURE);
 490         return 0;
 491     }
 492     for (i = 0; i < 3; i++) {
 493         if (EVP_DigestInit_ex(ctx, s->ctx->sha1, NULL) <= 0
 494             || EVP_DigestUpdate(ctx, salt[i],
 495                                 strlen((const char *)salt[i])) <= 0
 496             || EVP_DigestUpdate(ctx, p, len) <= 0
 497             || EVP_DigestUpdate(ctx, &(s->s3->client_random[0]),
 498                                 SSL3_RANDOM_SIZE) <= 0
 499             || EVP_DigestUpdate(ctx, &(s->s3->server_random[0]),
 500                                 SSL3_RANDOM_SIZE) <= 0
 501                /* TODO(size_t) : convert me */
 502             || EVP_DigestFinal_ex(ctx, buf, &n) <= 0
 503             || EVP_DigestInit_ex(ctx, s->ctx->md5, NULL) <= 0
 504             || EVP_DigestUpdate(ctx, p, len) <= 0
 505             || EVP_DigestUpdate(ctx, buf, n) <= 0
 506             || EVP_DigestFinal_ex(ctx, out, &n) <= 0) {
 507             SSLfatal(s, SSL_AD_INTERNAL_ERROR,
 508                      SSL_F_SSL3_GENERATE_MASTER_SECRET, ERR_R_INTERNAL_ERROR);
 509             ret = 0;
 510             break;
 511         }
 512         out += n;
 513         ret_secret_size += n;
 514     }
 515     EVP_MD_CTX_free(ctx);
 516
 517     OPENSSL_cleanse(buf, sizeof(buf));
 518     if (ret)
 519         *secret_size = ret_secret_size;
 520     return ret;
 521 }
 522
 523 int ssl3_alert_code(int code)
 524 {
 525     switch (code) {
 526     case SSL_AD_CLOSE_NOTIFY:
 527         return SSL3_AD_CLOSE_NOTIFY;
 528     case SSL_AD_UNEXPECTED_MESSAGE:
 529         return SSL3_AD_UNEXPECTED_MESSAGE;
 530     case SSL_AD_BAD_RECORD_MAC:
 531         return SSL3_AD_BAD_RECORD_MAC;
 532     case SSL_AD_DECRYPTION_FAILED:
 533         return SSL3_AD_BAD_RECORD_MAC;
 534     case SSL_AD_RECORD_OVERFLOW:
 535         return SSL3_AD_BAD_RECORD_MAC;
 536     case SSL_AD_DECOMPRESSION_FAILURE:
 537         return SSL3_AD_DECOMPRESSION_FAILURE;
 538     case SSL_AD_HANDSHAKE_FAILURE:
 539         return SSL3_AD_HANDSHAKE_FAILURE;
 540     case SSL_AD_NO_CERTIFICATE:
 541         return SSL3_AD_NO_CERTIFICATE;
 542     case SSL_AD_BAD_CERTIFICATE:
 543         return SSL3_AD_BAD_CERTIFICATE;
 544     case SSL_AD_UNSUPPORTED_CERTIFICATE:
 545         return SSL3_AD_UNSUPPORTED_CERTIFICATE;
 546     case SSL_AD_CERTIFICATE_REVOKED:
 547         return SSL3_AD_CERTIFICATE_REVOKED;
 548     case SSL_AD_CERTIFICATE_EXPIRED:
 549         return SSL3_AD_CERTIFICATE_EXPIRED;
 550     case SSL_AD_CERTIFICATE_UNKNOWN:
 551         return SSL3_AD_CERTIFICATE_UNKNOWN;
 552     case SSL_AD_ILLEGAL_PARAMETER:
 553         return SSL3_AD_ILLEGAL_PARAMETER;
 554     case SSL_AD_UNKNOWN_CA:
 555         return SSL3_AD_BAD_CERTIFICATE;
 556     case SSL_AD_ACCESS_DENIED:
 557         return SSL3_AD_HANDSHAKE_FAILURE;
 558     case SSL_AD_DECODE_ERROR:
 559         return SSL3_AD_HANDSHAKE_FAILURE;
 560     case SSL_AD_DECRYPT_ERROR:
 561         return SSL3_AD_HANDSHAKE_FAILURE;
 562     case SSL_AD_EXPORT_RESTRICTION:
 563         return SSL3_AD_HANDSHAKE_FAILURE;
 564     case SSL_AD_PROTOCOL_VERSION:
 565         return SSL3_AD_HANDSHAKE_FAILURE;
 566     case SSL_AD_INSUFFICIENT_SECURITY:
 567         return SSL3_AD_HANDSHAKE_FAILURE;
 568     case SSL_AD_INTERNAL_ERROR:
 569         return SSL3_AD_HANDSHAKE_FAILURE;
 570     case SSL_AD_USER_CANCELLED:
 571         return SSL3_AD_HANDSHAKE_FAILURE;
 572     case SSL_AD_NO_RENEGOTIATION:
 573         return -1;            /* Don't send it :-) */
 574     case SSL_AD_UNSUPPORTED_EXTENSION:
 575         return SSL3_AD_HANDSHAKE_FAILURE;
 576     case SSL_AD_CERTIFICATE_UNOBTAINABLE:
 577         return SSL3_AD_HANDSHAKE_FAILURE;
 578     case SSL_AD_UNRECOGNIZED_NAME:
 579         return SSL3_AD_HANDSHAKE_FAILURE;
 580     case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE:
 581         return SSL3_AD_HANDSHAKE_FAILURE;
 582     case SSL_AD_BAD_CERTIFICATE_HASH_VALUE:
 583         return SSL3_AD_HANDSHAKE_FAILURE;
 584     case SSL_AD_UNKNOWN_PSK_IDENTITY:
 585         return TLS1_AD_UNKNOWN_PSK_IDENTITY;
 586     case SSL_AD_INAPPROPRIATE_FALLBACK:
 587         return TLS1_AD_INAPPROPRIATE_FALLBACK;
 588     case SSL_AD_NO_APPLICATION_PROTOCOL:
 589         return TLS1_AD_NO_APPLICATION_PROTOCOL;
 590     case SSL_AD_CERTIFICATE_REQUIRED:
 591         return SSL_AD_HANDSHAKE_FAILURE;
 592     default:
 593         return -1;
 594     }
 595 }