ssl/s3_enc.c

   1 /*
   2  * Copyright 1995-2021 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_local.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_CONNECTION *s, unsigned char *km, int num)
  19 {
  20     const EVP_MD *md5 = NULL, *sha1 = NULL;
  21     EVP_MD_CTX *m5;
  22     EVP_MD_CTX *s1;
  23     unsigned char buf[16], smd[SHA_DIGEST_LENGTH];
  24     unsigned char c = 'A';
  25     unsigned int i, k;
  26     int ret = 0;
  27     SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(s);
  28
  29 #ifdef CHARSET_EBCDIC
  30     c = os_toascii[c];          /* 'A' in ASCII */
  31 #endif
  32     k = 0;
  33     md5 = ssl_evp_md_fetch(sctx->libctx, NID_md5, sctx->propq);
  34     sha1 = ssl_evp_md_fetch(sctx->libctx, NID_sha1, sctx->propq);
  35     m5 = EVP_MD_CTX_new();
  36     s1 = EVP_MD_CTX_new();
  37     if (md5 == NULL || sha1 == NULL || m5 == NULL || s1 == NULL) {
  38         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
  39         goto err;
  40     }
  41     for (i = 0; (int)i < num; i += MD5_DIGEST_LENGTH) {
  42         k++;
  43         if (k > sizeof(buf)) {
  44             /* bug: 'buf' is too small for this ciphersuite */
  45             SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
  46             goto err;
  47         }
  48
  49         memset(buf, c, k);
  50         c++;
  51         if (!EVP_DigestInit_ex(s1, 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, 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, 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, ERR_R_INTERNAL_ERROR);
  68                 goto err;
  69             }
  70             memcpy(km, smd, (num - i));
  71         } else {
  72             if (!EVP_DigestFinal_ex(m5, km, NULL)) {
  73                 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
  74                 goto err;
  75             }
  76         }
  77
  78         km += MD5_DIGEST_LENGTH;
  79     }
  80     OPENSSL_cleanse(smd, sizeof(smd));
  81     ret = 1;
  82  err:
  83     EVP_MD_CTX_free(m5);
  84     EVP_MD_CTX_free(s1);
  85     ssl_evp_md_free(md5);
  86     ssl_evp_md_free(sha1);
  87     return ret;
  88 }
  89
  90 int ssl3_change_cipher_state(SSL_CONNECTION *s, int which)
  91 {
  92     unsigned char *p, *mac_secret;
  93     size_t md_len;
  94     unsigned char *key, *iv;
  95     EVP_CIPHER_CTX *dd;
  96     const EVP_CIPHER *ciph;
  97     const SSL_COMP *comp = NULL;
  98     const EVP_MD *md;
  99     int mdi;
 100     size_t n, iv_len, key_len;
 101     int reuse_dd = 0;
 102     int direction = (which & SSL3_CC_READ) != 0 ? OSSL_RECORD_DIRECTION_READ
 103                                                 : OSSL_RECORD_DIRECTION_WRITE;
 104
 105     ciph = s->s3.tmp.new_sym_enc;
 106     md = s->s3.tmp.new_hash;
 107     /* m == NULL will lead to a crash later */
 108     if (!ossl_assert(md != NULL)) {
 109         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
 110         goto err;
 111     }
 112 #ifndef OPENSSL_NO_COMP
 113     comp = s->s3.tmp.new_compression;
 114 #endif
 115
 116     p = s->s3.tmp.key_block;
 117     mdi = EVP_MD_get_size(md);
 118     if (mdi < 0) {
 119         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
 120         goto err;
 121     }
 122     md_len = (size_t)mdi;
 123     key_len = EVP_CIPHER_get_key_length(ciph);
 124     iv_len = EVP_CIPHER_get_iv_length(ciph);
 125     if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
 126         (which == SSL3_CHANGE_CIPHER_SERVER_READ)) {
 127         mac_secret = &(p[0]);
 128         n = md_len + md_len;
 129         key = &(p[n]);
 130         n += key_len + key_len;
 131         iv = &(p[n]);
 132         n += iv_len + iv_len;
 133     } else {
 134         n = md_len;
 135         mac_secret = &(p[n]);
 136         n += md_len + key_len;
 137         key = &(p[n]);
 138         n += key_len + iv_len;
 139         iv = &(p[n]);
 140         n += iv_len;
 141     }
 142
 143     if (n > s->s3.tmp.key_block_length) {
 144         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
 145         goto err;
 146     }
 147
 148     if (!ssl_set_new_record_layer(s, SSL3_VERSION,
 149                                   direction,
 150                                   OSSL_RECORD_PROTECTION_LEVEL_APPLICATION,
 151                                   key, key_len, iv, iv_len, mac_secret,
 152                                   md_len, ciph, 0, NID_undef, md, comp)) {
 153         /* SSLfatal already called */
 154         goto err;
 155     }
 156
 157     if (which & SSL3_CC_READ) {
 158         s->statem.enc_write_state = ENC_WRITE_STATE_VALID;
 159         return 1;
 160     }
 161
 162     s->statem.enc_write_state = ENC_WRITE_STATE_INVALID;
 163     if (s->enc_write_ctx != NULL) {
 164         reuse_dd = 1;
 165     } else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL) {
 166         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
 167         goto err;
 168     } else {
 169         /*  make sure it's initialised in case we exit later with an error */
 170         EVP_CIPHER_CTX_reset(s->enc_write_ctx);
 171     }
 172     dd = s->enc_write_ctx;
 173     if (ssl_replace_hash(&s->write_hash, md) == NULL) {
 174         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
 175         goto err;
 176     }
 177 #ifndef OPENSSL_NO_COMP
 178     /* COMPRESS */
 179     COMP_CTX_free(s->compress);
 180     s->compress = NULL;
 181     if (comp != NULL) {
 182         s->compress = COMP_CTX_new(comp->method);
 183         if (s->compress == NULL) {
 184             SSLfatal(s, SSL_AD_INTERNAL_ERROR,
 185                         SSL_R_COMPRESSION_LIBRARY_ERROR);
 186             goto err;
 187         }
 188     }
 189 #endif
 190     RECORD_LAYER_reset_write_sequence(&s->rlayer);
 191     memcpy(&(s->s3.write_mac_secret[0]), mac_secret, md_len);
 192
 193     if (reuse_dd)
 194         EVP_CIPHER_CTX_reset(dd);
 195
 196     if (!EVP_CipherInit_ex(dd, ciph, NULL, key, iv, (which & SSL3_CC_WRITE))) {
 197         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
 198         goto err;
 199     }
 200
 201     if (EVP_CIPHER_get0_provider(ciph) != NULL
 202             && !tls_provider_set_tls_params(s, dd, ciph, md)) {
 203         /* SSLfatal already called */
 204         goto err;
 205     }
 206
 207     s->statem.enc_write_state = ENC_WRITE_STATE_VALID;
 208     return 1;
 209  err:
 210     return 0;
 211 }
 212
 213 int ssl3_setup_key_block(SSL_CONNECTION *s)
 214 {
 215     unsigned char *p;
 216     const EVP_CIPHER *c;
 217     const EVP_MD *hash;
 218     int num;
 219     int ret = 0;
 220     SSL_COMP *comp;
 221
 222     if (s->s3.tmp.key_block_length != 0)
 223         return 1;
 224
 225     if (!ssl_cipher_get_evp(SSL_CONNECTION_GET_CTX(s), s->session, &c, &hash,
 226                             NULL, NULL, &comp, 0)) {
 227         /* Error is already recorded */
 228         SSLfatal_alert(s, SSL_AD_INTERNAL_ERROR);
 229         return 0;
 230     }
 231
 232     ssl_evp_cipher_free(s->s3.tmp.new_sym_enc);
 233     s->s3.tmp.new_sym_enc = c;
 234     ssl_evp_md_free(s->s3.tmp.new_hash);
 235     s->s3.tmp.new_hash = hash;
 236 #ifdef OPENSSL_NO_COMP
 237     s->s3.tmp.new_compression = NULL;
 238 #else
 239     s->s3.tmp.new_compression = comp;
 240 #endif
 241
 242     num = EVP_MD_get_size(hash);
 243     if (num < 0)
 244         return 0;
 245
 246     num = EVP_CIPHER_get_key_length(c) + num + EVP_CIPHER_get_iv_length(c);
 247     num *= 2;
 248
 249     ssl3_cleanup_key_block(s);
 250
 251     if ((p = OPENSSL_malloc(num)) == NULL) {
 252         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
 253         return 0;
 254     }
 255
 256     s->s3.tmp.key_block_length = num;
 257     s->s3.tmp.key_block = p;
 258
 259     /* Calls SSLfatal() as required */
 260     ret = ssl3_generate_key_block(s, p, num);
 261
 262     return ret;
 263 }
 264
 265 void ssl3_cleanup_key_block(SSL_CONNECTION *s)
 266 {
 267     OPENSSL_clear_free(s->s3.tmp.key_block, s->s3.tmp.key_block_length);
 268     s->s3.tmp.key_block = NULL;
 269     s->s3.tmp.key_block_length = 0;
 270 }
 271
 272 int ssl3_init_finished_mac(SSL_CONNECTION *s)
 273 {
 274     BIO *buf = BIO_new(BIO_s_mem());
 275
 276     if (buf == NULL) {
 277         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
 278         return 0;
 279     }
 280     ssl3_free_digest_list(s);
 281     s->s3.handshake_buffer = buf;
 282     (void)BIO_set_close(s->s3.handshake_buffer, BIO_CLOSE);
 283     return 1;
 284 }
 285
 286 /*
 287  * Free digest list. Also frees handshake buffer since they are always freed
 288  * together.
 289  */
 290
 291 void ssl3_free_digest_list(SSL_CONNECTION *s)
 292 {
 293     BIO_free(s->s3.handshake_buffer);
 294     s->s3.handshake_buffer = NULL;
 295     EVP_MD_CTX_free(s->s3.handshake_dgst);
 296     s->s3.handshake_dgst = NULL;
 297 }
 298
 299 int ssl3_finish_mac(SSL_CONNECTION *s, const unsigned char *buf, size_t len)
 300 {
 301     int ret;
 302
 303     if (s->s3.handshake_dgst == NULL) {
 304         /* Note: this writes to a memory BIO so a failure is a fatal error */
 305         if (len > INT_MAX) {
 306             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_OVERFLOW_ERROR);
 307             return 0;
 308         }
 309         ret = BIO_write(s->s3.handshake_buffer, (void *)buf, (int)len);
 310         if (ret <= 0 || ret != (int)len) {
 311             SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
 312             return 0;
 313         }
 314     } else {
 315         ret = EVP_DigestUpdate(s->s3.handshake_dgst, buf, len);
 316         if (!ret) {
 317             SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
 318             return 0;
 319         }
 320     }
 321     return 1;
 322 }
 323
 324 int ssl3_digest_cached_records(SSL_CONNECTION *s, int keep)
 325 {
 326     const EVP_MD *md;
 327     long hdatalen;
 328     void *hdata;
 329
 330     if (s->s3.handshake_dgst == NULL) {
 331         hdatalen = BIO_get_mem_data(s->s3.handshake_buffer, &hdata);
 332         if (hdatalen <= 0) {
 333             SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_BAD_HANDSHAKE_LENGTH);
 334             return 0;
 335         }
 336
 337         s->s3.handshake_dgst = EVP_MD_CTX_new();
 338         if (s->s3.handshake_dgst == NULL) {
 339             SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
 340             return 0;
 341         }
 342
 343         md = ssl_handshake_md(s);
 344         if (md == NULL) {
 345             SSLfatal(s, SSL_AD_INTERNAL_ERROR,
 346                      SSL_R_NO_SUITABLE_DIGEST_ALGORITHM);
 347             return 0;
 348         }
 349         if (!EVP_DigestInit_ex(s->s3.handshake_dgst, md, NULL)
 350             || !EVP_DigestUpdate(s->s3.handshake_dgst, hdata, hdatalen)) {
 351             SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
 352             return 0;
 353         }
 354     }
 355     if (keep == 0) {
 356         BIO_free(s->s3.handshake_buffer);
 357         s->s3.handshake_buffer = NULL;
 358     }
 359
 360     return 1;
 361 }
 362
 363 void ssl3_digest_master_key_set_params(const SSL_SESSION *session,
 364                                        OSSL_PARAM params[])
 365 {
 366     int n = 0;
 367     params[n++] = OSSL_PARAM_construct_octet_string(OSSL_DIGEST_PARAM_SSL3_MS,
 368                                                     (void *)session->master_key,
 369                                                     session->master_key_length);
 370     params[n++] = OSSL_PARAM_construct_end();
 371 }
 372
 373 size_t ssl3_final_finish_mac(SSL_CONNECTION *s, const char *sender, size_t len,
 374                              unsigned char *p)
 375 {
 376     int ret;
 377     EVP_MD_CTX *ctx = NULL;
 378
 379     if (!ssl3_digest_cached_records(s, 0)) {
 380         /* SSLfatal() already called */
 381         return 0;
 382     }
 383
 384     if (EVP_MD_CTX_get_type(s->s3.handshake_dgst) != NID_md5_sha1) {
 385         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_NO_REQUIRED_DIGEST);
 386         return 0;
 387     }
 388
 389     ctx = EVP_MD_CTX_new();
 390     if (ctx == NULL) {
 391         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
 392         return 0;
 393     }
 394     if (!EVP_MD_CTX_copy_ex(ctx, s->s3.handshake_dgst)) {
 395         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
 396         ret = 0;
 397         goto err;
 398     }
 399
 400     ret = EVP_MD_CTX_get_size(ctx);
 401     if (ret < 0) {
 402         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
 403         ret = 0;
 404         goto err;
 405     }
 406
 407     if (sender != NULL) {
 408         OSSL_PARAM digest_cmd_params[3];
 409
 410         ssl3_digest_master_key_set_params(s->session, digest_cmd_params);
 411
 412         if (EVP_DigestUpdate(ctx, sender, len) <= 0
 413             || EVP_MD_CTX_set_params(ctx, digest_cmd_params) <= 0
 414             || EVP_DigestFinal_ex(ctx, p, NULL) <= 0) {
 415                 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
 416                 ret = 0;
 417         }
 418     }
 419
 420  err:
 421     EVP_MD_CTX_free(ctx);
 422
 423     return ret;
 424 }
 425
 426 int ssl3_generate_master_secret(SSL_CONNECTION *s, unsigned char *out,
 427                                 unsigned char *p,
 428                                 size_t len, size_t *secret_size)
 429 {
 430     static const unsigned char *salt[3] = {
 431 #ifndef CHARSET_EBCDIC
 432         (const unsigned char *)"A",
 433         (const unsigned char *)"BB",
 434         (const unsigned char *)"CCC",
 435 #else
 436         (const unsigned char *)"\x41",
 437         (const unsigned char *)"\x42\x42",
 438         (const unsigned char *)"\x43\x43\x43",
 439 #endif
 440     };
 441     unsigned char buf[EVP_MAX_MD_SIZE];
 442     EVP_MD_CTX *ctx = EVP_MD_CTX_new();
 443     int i, ret = 1;
 444     unsigned int n;
 445     size_t ret_secret_size = 0;
 446
 447     if (ctx == NULL) {
 448         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
 449         return 0;
 450     }
 451     for (i = 0; i < 3; i++) {
 452         if (EVP_DigestInit_ex(ctx, SSL_CONNECTION_GET_CTX(s)->sha1, NULL) <= 0
 453             || EVP_DigestUpdate(ctx, salt[i],
 454                                 strlen((const char *)salt[i])) <= 0
 455             || EVP_DigestUpdate(ctx, p, len) <= 0
 456             || EVP_DigestUpdate(ctx, &(s->s3.client_random[0]),
 457                                 SSL3_RANDOM_SIZE) <= 0
 458             || EVP_DigestUpdate(ctx, &(s->s3.server_random[0]),
 459                                 SSL3_RANDOM_SIZE) <= 0
 460             || EVP_DigestFinal_ex(ctx, buf, &n) <= 0
 461             || EVP_DigestInit_ex(ctx, SSL_CONNECTION_GET_CTX(s)->md5, NULL) <= 0
 462             || EVP_DigestUpdate(ctx, p, len) <= 0
 463             || EVP_DigestUpdate(ctx, buf, n) <= 0
 464             || EVP_DigestFinal_ex(ctx, out, &n) <= 0) {
 465             SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
 466             ret = 0;
 467             break;
 468         }
 469         out += n;
 470         ret_secret_size += n;
 471     }
 472     EVP_MD_CTX_free(ctx);
 473
 474     OPENSSL_cleanse(buf, sizeof(buf));
 475     if (ret)
 476         *secret_size = ret_secret_size;
 477     return ret;
 478 }
 479
 480 int ssl3_alert_code(int code)
 481 {
 482     switch (code) {
 483     case SSL_AD_CLOSE_NOTIFY:
 484         return SSL3_AD_CLOSE_NOTIFY;
 485     case SSL_AD_UNEXPECTED_MESSAGE:
 486         return SSL3_AD_UNEXPECTED_MESSAGE;
 487     case SSL_AD_BAD_RECORD_MAC:
 488         return SSL3_AD_BAD_RECORD_MAC;
 489     case SSL_AD_DECRYPTION_FAILED:
 490         return SSL3_AD_BAD_RECORD_MAC;
 491     case SSL_AD_RECORD_OVERFLOW:
 492         return SSL3_AD_BAD_RECORD_MAC;
 493     case SSL_AD_DECOMPRESSION_FAILURE:
 494         return SSL3_AD_DECOMPRESSION_FAILURE;
 495     case SSL_AD_HANDSHAKE_FAILURE:
 496         return SSL3_AD_HANDSHAKE_FAILURE;
 497     case SSL_AD_NO_CERTIFICATE:
 498         return SSL3_AD_NO_CERTIFICATE;
 499     case SSL_AD_BAD_CERTIFICATE:
 500         return SSL3_AD_BAD_CERTIFICATE;
 501     case SSL_AD_UNSUPPORTED_CERTIFICATE:
 502         return SSL3_AD_UNSUPPORTED_CERTIFICATE;
 503     case SSL_AD_CERTIFICATE_REVOKED:
 504         return SSL3_AD_CERTIFICATE_REVOKED;
 505     case SSL_AD_CERTIFICATE_EXPIRED:
 506         return SSL3_AD_CERTIFICATE_EXPIRED;
 507     case SSL_AD_CERTIFICATE_UNKNOWN:
 508         return SSL3_AD_CERTIFICATE_UNKNOWN;
 509     case SSL_AD_ILLEGAL_PARAMETER:
 510         return SSL3_AD_ILLEGAL_PARAMETER;
 511     case SSL_AD_UNKNOWN_CA:
 512         return SSL3_AD_BAD_CERTIFICATE;
 513     case SSL_AD_ACCESS_DENIED:
 514         return SSL3_AD_HANDSHAKE_FAILURE;
 515     case SSL_AD_DECODE_ERROR:
 516         return SSL3_AD_HANDSHAKE_FAILURE;
 517     case SSL_AD_DECRYPT_ERROR:
 518         return SSL3_AD_HANDSHAKE_FAILURE;
 519     case SSL_AD_EXPORT_RESTRICTION:
 520         return SSL3_AD_HANDSHAKE_FAILURE;
 521     case SSL_AD_PROTOCOL_VERSION:
 522         return SSL3_AD_HANDSHAKE_FAILURE;
 523     case SSL_AD_INSUFFICIENT_SECURITY:
 524         return SSL3_AD_HANDSHAKE_FAILURE;
 525     case SSL_AD_INTERNAL_ERROR:
 526         return SSL3_AD_HANDSHAKE_FAILURE;
 527     case SSL_AD_USER_CANCELLED:
 528         return SSL3_AD_HANDSHAKE_FAILURE;
 529     case SSL_AD_NO_RENEGOTIATION:
 530         return -1;            /* Don't send it :-) */
 531     case SSL_AD_UNSUPPORTED_EXTENSION:
 532         return SSL3_AD_HANDSHAKE_FAILURE;
 533     case SSL_AD_CERTIFICATE_UNOBTAINABLE:
 534         return SSL3_AD_HANDSHAKE_FAILURE;
 535     case SSL_AD_UNRECOGNIZED_NAME:
 536         return SSL3_AD_HANDSHAKE_FAILURE;
 537     case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE:
 538         return SSL3_AD_HANDSHAKE_FAILURE;
 539     case SSL_AD_BAD_CERTIFICATE_HASH_VALUE:
 540         return SSL3_AD_HANDSHAKE_FAILURE;
 541     case SSL_AD_UNKNOWN_PSK_IDENTITY:
 542         return TLS1_AD_UNKNOWN_PSK_IDENTITY;
 543     case SSL_AD_INAPPROPRIATE_FALLBACK:
 544         return TLS1_AD_INAPPROPRIATE_FALLBACK;
 545     case SSL_AD_NO_APPLICATION_PROTOCOL:
 546         return TLS1_AD_NO_APPLICATION_PROTOCOL;
 547     case SSL_AD_CERTIFICATE_REQUIRED:
 548         return SSL_AD_HANDSHAKE_FAILURE;
 549     case TLS13_AD_MISSING_EXTENSION:
 550         return SSL_AD_HANDSHAKE_FAILURE;
 551     default:
 552         return -1;
 553     }
 554 }