ssl/t1_enc.c

   1 /*
   2  * Copyright 1995-2024 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 "record/record_local.h"
  14 #include "internal/ktls.h"
  15 #include "internal/cryptlib.h"
  16 #include <openssl/comp.h>
  17 #include <openssl/evp.h>
  18 #include <openssl/kdf.h>
  19 #include <openssl/rand.h>
  20 #include <openssl/obj_mac.h>
  21 #include <openssl/core_names.h>
  22 #include <openssl/trace.h>
  23
  24 /* seed1 through seed5 are concatenated */
  25 static int tls1_PRF(SSL_CONNECTION *s,
  26                     const void *seed1, size_t seed1_len,
  27                     const void *seed2, size_t seed2_len,
  28                     const void *seed3, size_t seed3_len,
  29                     const void *seed4, size_t seed4_len,
  30                     const void *seed5, size_t seed5_len,
  31                     const unsigned char *sec, size_t slen,
  32                     unsigned char *out, size_t olen, int fatal)
  33 {
  34     const EVP_MD *md = ssl_prf_md(s);
  35     EVP_KDF *kdf;
  36     EVP_KDF_CTX *kctx = NULL;
  37     OSSL_PARAM params[8], *p = params;
  38     const char *mdname;
  39
  40     if (md == NULL) {
  41         /* Should never happen */
  42         if (fatal)
  43             SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
  44         else
  45             ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
  46         return 0;
  47     }
  48     kdf = EVP_KDF_fetch(SSL_CONNECTION_GET_CTX(s)->libctx,
  49                         OSSL_KDF_NAME_TLS1_PRF,
  50                         SSL_CONNECTION_GET_CTX(s)->propq);
  51     if (kdf == NULL)
  52         goto err;
  53     kctx = EVP_KDF_CTX_new(kdf);
  54     EVP_KDF_free(kdf);
  55     if (kctx == NULL)
  56         goto err;
  57     mdname = EVP_MD_get0_name(md);
  58     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_DIGEST,
  59                                             (char *)mdname, 0);
  60     *p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_SECRET,
  61                                              (unsigned char *)sec,
  62                                              (size_t)slen);
  63     *p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_SEED,
  64                                              (void *)seed1, (size_t)seed1_len);
  65     *p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_SEED,
  66                                              (void *)seed2, (size_t)seed2_len);
  67     *p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_SEED,
  68                                              (void *)seed3, (size_t)seed3_len);
  69     *p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_SEED,
  70                                              (void *)seed4, (size_t)seed4_len);
  71     *p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_SEED,
  72                                              (void *)seed5, (size_t)seed5_len);
  73     *p = OSSL_PARAM_construct_end();
  74     if (EVP_KDF_derive(kctx, out, olen, params)) {
  75         EVP_KDF_CTX_free(kctx);
  76         return 1;
  77     }
  78
  79  err:
  80     if (fatal)
  81         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
  82     else
  83         ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
  84     EVP_KDF_CTX_free(kctx);
  85     return 0;
  86 }
  87
  88 static int tls1_generate_key_block(SSL_CONNECTION *s, unsigned char *km,
  89                                    size_t num)
  90 {
  91     int ret;
  92
  93     /* Calls SSLfatal() as required */
  94     ret = tls1_PRF(s,
  95                    TLS_MD_KEY_EXPANSION_CONST,
  96                    TLS_MD_KEY_EXPANSION_CONST_SIZE, s->s3.server_random,
  97                    SSL3_RANDOM_SIZE, s->s3.client_random, SSL3_RANDOM_SIZE,
  98                    NULL, 0, NULL, 0, s->session->master_key,
  99                    s->session->master_key_length, km, num, 1);
 100
 101     return ret;
 102 }
 103
 104 static int tls_iv_length_within_key_block(const EVP_CIPHER *c)
 105 {
 106     /* If GCM/CCM mode only part of IV comes from PRF */
 107     if (EVP_CIPHER_get_mode(c) == EVP_CIPH_GCM_MODE)
 108         return EVP_GCM_TLS_FIXED_IV_LEN;
 109     else if (EVP_CIPHER_get_mode(c) == EVP_CIPH_CCM_MODE)
 110         return EVP_CCM_TLS_FIXED_IV_LEN;
 111     else
 112         return EVP_CIPHER_get_iv_length(c);
 113 }
 114
 115 int tls1_change_cipher_state(SSL_CONNECTION *s, int which)
 116 {
 117     unsigned char *p, *mac_secret;
 118     unsigned char *key, *iv;
 119     const EVP_CIPHER *c;
 120     const SSL_COMP *comp = NULL;
 121     const EVP_MD *m;
 122     int mac_type;
 123     size_t mac_secret_size;
 124     size_t n, i, j, k, cl;
 125     int iivlen;
 126     /*
 127      * Taglen is only relevant for CCM ciphersuites. Other ciphersuites
 128      * ignore this value so we can default it to 0.
 129      */
 130     size_t taglen = 0;
 131     int direction;
 132
 133     c = s->s3.tmp.new_sym_enc;
 134     m = s->s3.tmp.new_hash;
 135     mac_type = s->s3.tmp.new_mac_pkey_type;
 136 #ifndef OPENSSL_NO_COMP
 137     comp = s->s3.tmp.new_compression;
 138 #endif
 139
 140     p = s->s3.tmp.key_block;
 141     i = mac_secret_size = s->s3.tmp.new_mac_secret_size;
 142
 143     cl = EVP_CIPHER_get_key_length(c);
 144     j = cl;
 145     iivlen = tls_iv_length_within_key_block(c);
 146     if (iivlen < 0) {
 147         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
 148         goto err;
 149     }
 150     k = iivlen;
 151     if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
 152         (which == SSL3_CHANGE_CIPHER_SERVER_READ)) {
 153         mac_secret = &(p[0]);
 154         n = i + i;
 155         key = &(p[n]);
 156         n += j + j;
 157         iv = &(p[n]);
 158         n += k + k;
 159     } else {
 160         n = i;
 161         mac_secret = &(p[n]);
 162         n += i + j;
 163         key = &(p[n]);
 164         n += j + k;
 165         iv = &(p[n]);
 166         n += k;
 167     }
 168
 169     if (n > s->s3.tmp.key_block_length) {
 170         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
 171         goto err;
 172     }
 173
 174     switch (EVP_CIPHER_get_mode(c)) {
 175     case EVP_CIPH_GCM_MODE:
 176         taglen = EVP_GCM_TLS_TAG_LEN;
 177         break;
 178     case EVP_CIPH_CCM_MODE:
 179         if ((s->s3.tmp.new_cipher->algorithm_enc
 180                 & (SSL_AES128CCM8 | SSL_AES256CCM8)) != 0)
 181             taglen = EVP_CCM8_TLS_TAG_LEN;
 182         else
 183             taglen = EVP_CCM_TLS_TAG_LEN;
 184         break;
 185     default:
 186         if (EVP_CIPHER_is_a(c, "CHACHA20-POLY1305")) {
 187             taglen = EVP_CHACHAPOLY_TLS_TAG_LEN;
 188         } else {
 189             /* MAC secret size corresponds to the MAC output size */
 190             taglen = s->s3.tmp.new_mac_secret_size;
 191         }
 192         break;
 193     }
 194
 195     if (which & SSL3_CC_READ) {
 196         if (s->ext.use_etm)
 197             s->s3.flags |= TLS1_FLAGS_ENCRYPT_THEN_MAC_READ;
 198         else
 199             s->s3.flags &= ~TLS1_FLAGS_ENCRYPT_THEN_MAC_READ;
 200
 201         if (s->s3.tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
 202             s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM;
 203         else
 204             s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM;
 205
 206         if (s->s3.tmp.new_cipher->algorithm2 & TLS1_TLSTREE)
 207             s->mac_flags |= SSL_MAC_FLAG_READ_MAC_TLSTREE;
 208         else
 209             s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_TLSTREE;
 210
 211         direction = OSSL_RECORD_DIRECTION_READ;
 212     } else {
 213         if (s->ext.use_etm)
 214             s->s3.flags |= TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE;
 215         else
 216             s->s3.flags &= ~TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE;
 217
 218         if (s->s3.tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
 219             s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM;
 220         else
 221             s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM;
 222
 223         if (s->s3.tmp.new_cipher->algorithm2 & TLS1_TLSTREE)
 224             s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_TLSTREE;
 225         else
 226             s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_TLSTREE;
 227
 228         direction = OSSL_RECORD_DIRECTION_WRITE;
 229     }
 230
 231     if (SSL_CONNECTION_IS_DTLS(s))
 232         dtls1_increment_epoch(s, which);
 233
 234     if (!ssl_set_new_record_layer(s, s->version, direction,
 235                                     OSSL_RECORD_PROTECTION_LEVEL_APPLICATION,
 236                                     NULL, 0, key, cl, iv, (size_t)k, mac_secret,
 237                                     mac_secret_size, c, taglen, mac_type,
 238                                     m, comp, NULL)) {
 239         /* SSLfatal already called */
 240         goto err;
 241     }
 242
 243     OSSL_TRACE_BEGIN(TLS) {
 244         BIO_printf(trc_out, "which = %04X, key:\n", which);
 245         BIO_dump_indent(trc_out, key, EVP_CIPHER_get_key_length(c), 4);
 246         BIO_printf(trc_out, "iv:\n");
 247         BIO_dump_indent(trc_out, iv, k, 4);
 248     } OSSL_TRACE_END(TLS);
 249
 250     return 1;
 251  err:
 252     return 0;
 253 }
 254
 255 int tls1_setup_key_block(SSL_CONNECTION *s)
 256 {
 257     unsigned char *p;
 258     const EVP_CIPHER *c;
 259     const EVP_MD *hash;
 260     SSL_COMP *comp;
 261     int mac_type = NID_undef;
 262     size_t num, mac_secret_size = 0;
 263     int ret = 0;
 264     int ivlen;
 265
 266     if (s->s3.tmp.key_block_length != 0)
 267         return 1;
 268
 269     if (!ssl_cipher_get_evp(SSL_CONNECTION_GET_CTX(s), s->session, &c, &hash,
 270                             &mac_type, &mac_secret_size, &comp,
 271                             s->ext.use_etm)) {
 272         /* Error is already recorded */
 273         SSLfatal_alert(s, SSL_AD_INTERNAL_ERROR);
 274         return 0;
 275     }
 276
 277     ssl_evp_cipher_free(s->s3.tmp.new_sym_enc);
 278     s->s3.tmp.new_sym_enc = c;
 279     ssl_evp_md_free(s->s3.tmp.new_hash);
 280     s->s3.tmp.new_hash = hash;
 281     s->s3.tmp.new_mac_pkey_type = mac_type;
 282     s->s3.tmp.new_mac_secret_size = mac_secret_size;
 283     ivlen = tls_iv_length_within_key_block(c);
 284     if (ivlen < 0) {
 285         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
 286         return 0;
 287     }
 288     num = mac_secret_size + EVP_CIPHER_get_key_length(c) + ivlen;
 289     num *= 2;
 290
 291     ssl3_cleanup_key_block(s);
 292
 293     if ((p = OPENSSL_malloc(num)) == NULL) {
 294         SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
 295         goto err;
 296     }
 297
 298     s->s3.tmp.key_block_length = num;
 299     s->s3.tmp.key_block = p;
 300
 301     OSSL_TRACE_BEGIN(TLS) {
 302         BIO_printf(trc_out, "key block length: %zu\n", num);
 303         BIO_printf(trc_out, "client random\n");
 304         BIO_dump_indent(trc_out, s->s3.client_random, SSL3_RANDOM_SIZE, 4);
 305         BIO_printf(trc_out, "server random\n");
 306         BIO_dump_indent(trc_out, s->s3.server_random, SSL3_RANDOM_SIZE, 4);
 307         BIO_printf(trc_out, "master key\n");
 308         BIO_dump_indent(trc_out,
 309                         s->session->master_key,
 310                         s->session->master_key_length, 4);
 311     } OSSL_TRACE_END(TLS);
 312
 313     if (!tls1_generate_key_block(s, p, num)) {
 314         /* SSLfatal() already called */
 315         goto err;
 316     }
 317
 318     OSSL_TRACE_BEGIN(TLS) {
 319         BIO_printf(trc_out, "key block\n");
 320         BIO_dump_indent(trc_out, p, num, 4);
 321     } OSSL_TRACE_END(TLS);
 322
 323     ret = 1;
 324  err:
 325     return ret;
 326 }
 327
 328 size_t tls1_final_finish_mac(SSL_CONNECTION *s, const char *str,
 329                              size_t slen, unsigned char *out)
 330 {
 331     size_t hashlen;
 332     unsigned char hash[EVP_MAX_MD_SIZE];
 333     size_t finished_size = TLS1_FINISH_MAC_LENGTH;
 334
 335     if (s->s3.tmp.new_cipher->algorithm_mkey & SSL_kGOST18)
 336         finished_size = 32;
 337
 338     if (!ssl3_digest_cached_records(s, 0)) {
 339         /* SSLfatal() already called */
 340         return 0;
 341     }
 342
 343     if (!ssl_handshake_hash(s, hash, sizeof(hash), &hashlen)) {
 344         /* SSLfatal() already called */
 345         return 0;
 346     }
 347
 348     if (!tls1_PRF(s, str, slen, hash, hashlen, NULL, 0, NULL, 0, NULL, 0,
 349                   s->session->master_key, s->session->master_key_length,
 350                   out, finished_size, 1)) {
 351         /* SSLfatal() already called */
 352         return 0;
 353     }
 354     OPENSSL_cleanse(hash, hashlen);
 355     return finished_size;
 356 }
 357
 358 int tls1_generate_master_secret(SSL_CONNECTION *s, unsigned char *out,
 359                                 unsigned char *p, size_t len,
 360                                 size_t *secret_size)
 361 {
 362     if (s->session->flags & SSL_SESS_FLAG_EXTMS) {
 363         unsigned char hash[EVP_MAX_MD_SIZE * 2];
 364         size_t hashlen;
 365         /*
 366          * Digest cached records keeping record buffer (if present): this won't
 367          * affect client auth because we're freezing the buffer at the same
 368          * point (after client key exchange and before certificate verify)
 369          */
 370         if (!ssl3_digest_cached_records(s, 1)
 371                 || !ssl_handshake_hash(s, hash, sizeof(hash), &hashlen)) {
 372             /* SSLfatal() already called */
 373             return 0;
 374         }
 375         OSSL_TRACE_BEGIN(TLS) {
 376             BIO_printf(trc_out, "Handshake hashes:\n");
 377             BIO_dump(trc_out, (char *)hash, hashlen);
 378         } OSSL_TRACE_END(TLS);
 379         if (!tls1_PRF(s,
 380                       TLS_MD_EXTENDED_MASTER_SECRET_CONST,
 381                       TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE,
 382                       hash, hashlen,
 383                       NULL, 0,
 384                       NULL, 0,
 385                       NULL, 0, p, len, out,
 386                       SSL3_MASTER_SECRET_SIZE, 1)) {
 387             /* SSLfatal() already called */
 388             return 0;
 389         }
 390         OPENSSL_cleanse(hash, hashlen);
 391     } else {
 392         if (!tls1_PRF(s,
 393                       TLS_MD_MASTER_SECRET_CONST,
 394                       TLS_MD_MASTER_SECRET_CONST_SIZE,
 395                       s->s3.client_random, SSL3_RANDOM_SIZE,
 396                       NULL, 0,
 397                       s->s3.server_random, SSL3_RANDOM_SIZE,
 398                       NULL, 0, p, len, out,
 399                       SSL3_MASTER_SECRET_SIZE, 1)) {
 400            /* SSLfatal() already called */
 401             return 0;
 402         }
 403     }
 404
 405     OSSL_TRACE_BEGIN(TLS) {
 406         BIO_printf(trc_out, "Premaster Secret:\n");
 407         BIO_dump_indent(trc_out, p, len, 4);
 408         BIO_printf(trc_out, "Client Random:\n");
 409         BIO_dump_indent(trc_out, s->s3.client_random, SSL3_RANDOM_SIZE, 4);
 410         BIO_printf(trc_out, "Server Random:\n");
 411         BIO_dump_indent(trc_out, s->s3.server_random, SSL3_RANDOM_SIZE, 4);
 412         BIO_printf(trc_out, "Master Secret:\n");
 413         BIO_dump_indent(trc_out,
 414                         s->session->master_key,
 415                         SSL3_MASTER_SECRET_SIZE, 4);
 416     } OSSL_TRACE_END(TLS);
 417
 418     *secret_size = SSL3_MASTER_SECRET_SIZE;
 419     return 1;
 420 }
 421
 422 int tls1_export_keying_material(SSL_CONNECTION *s, unsigned char *out,
 423                                 size_t olen, const char *label, size_t llen,
 424                                 const unsigned char *context,
 425                                 size_t contextlen, int use_context)
 426 {
 427     unsigned char *val = NULL;
 428     size_t vallen = 0, currentvalpos;
 429     int rv = 0;
 430
 431     /*
 432      * RFC 5705 embeds context length as uint16; reject longer context
 433      * before proceeding.
 434      */
 435     if (contextlen > 0xffff) {
 436         ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_INVALID_ARGUMENT);
 437         return 0;
 438     }
 439
 440     /*
 441      * construct PRF arguments we construct the PRF argument ourself rather
 442      * than passing separate values into the TLS PRF to ensure that the
 443      * concatenation of values does not create a prohibited label.
 444      */
 445     vallen = llen + SSL3_RANDOM_SIZE * 2;
 446     if (use_context) {
 447         vallen += 2 + contextlen;
 448     }
 449
 450     val = OPENSSL_malloc(vallen);
 451     if (val == NULL)
 452         goto ret;
 453     currentvalpos = 0;
 454     memcpy(val + currentvalpos, (unsigned char *)label, llen);
 455     currentvalpos += llen;
 456     memcpy(val + currentvalpos, s->s3.client_random, SSL3_RANDOM_SIZE);
 457     currentvalpos += SSL3_RANDOM_SIZE;
 458     memcpy(val + currentvalpos, s->s3.server_random, SSL3_RANDOM_SIZE);
 459     currentvalpos += SSL3_RANDOM_SIZE;
 460
 461     if (use_context) {
 462         val[currentvalpos] = (contextlen >> 8) & 0xff;
 463         currentvalpos++;
 464         val[currentvalpos] = contextlen & 0xff;
 465         currentvalpos++;
 466         if ((contextlen > 0) || (context != NULL)) {
 467             memcpy(val + currentvalpos, context, contextlen);
 468         }
 469     }
 470
 471     /*
 472      * disallow prohibited labels note that SSL3_RANDOM_SIZE > max(prohibited
 473      * label len) = 15, so size of val > max(prohibited label len) = 15 and
 474      * the comparisons won't have buffer overflow
 475      */
 476     if (memcmp(val, TLS_MD_CLIENT_FINISH_CONST,
 477                TLS_MD_CLIENT_FINISH_CONST_SIZE) == 0)
 478         goto err1;
 479     if (memcmp(val, TLS_MD_SERVER_FINISH_CONST,
 480                TLS_MD_SERVER_FINISH_CONST_SIZE) == 0)
 481         goto err1;
 482     if (memcmp(val, TLS_MD_MASTER_SECRET_CONST,
 483                TLS_MD_MASTER_SECRET_CONST_SIZE) == 0)
 484         goto err1;
 485     if (memcmp(val, TLS_MD_EXTENDED_MASTER_SECRET_CONST,
 486                TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE) == 0)
 487         goto err1;
 488     if (memcmp(val, TLS_MD_KEY_EXPANSION_CONST,
 489                TLS_MD_KEY_EXPANSION_CONST_SIZE) == 0)
 490         goto err1;
 491
 492     rv = tls1_PRF(s,
 493                   val, vallen,
 494                   NULL, 0,
 495                   NULL, 0,
 496                   NULL, 0,
 497                   NULL, 0,
 498                   s->session->master_key, s->session->master_key_length,
 499                   out, olen, 0);
 500
 501     goto ret;
 502  err1:
 503     ERR_raise(ERR_LIB_SSL, SSL_R_TLS_ILLEGAL_EXPORTER_LABEL);
 504  ret:
 505     OPENSSL_clear_free(val, vallen);
 506     return rv;
 507 }
 508
 509 int tls1_alert_code(int code)
 510 {
 511     switch (code) {
 512     case SSL_AD_CLOSE_NOTIFY:
 513         return SSL3_AD_CLOSE_NOTIFY;
 514     case SSL_AD_UNEXPECTED_MESSAGE:
 515         return SSL3_AD_UNEXPECTED_MESSAGE;
 516     case SSL_AD_BAD_RECORD_MAC:
 517         return SSL3_AD_BAD_RECORD_MAC;
 518     case SSL_AD_DECRYPTION_FAILED:
 519         return TLS1_AD_DECRYPTION_FAILED;
 520     case SSL_AD_RECORD_OVERFLOW:
 521         return TLS1_AD_RECORD_OVERFLOW;
 522     case SSL_AD_DECOMPRESSION_FAILURE:
 523         return SSL3_AD_DECOMPRESSION_FAILURE;
 524     case SSL_AD_HANDSHAKE_FAILURE:
 525         return SSL3_AD_HANDSHAKE_FAILURE;
 526     case SSL_AD_NO_CERTIFICATE:
 527         return -1;
 528     case SSL_AD_BAD_CERTIFICATE:
 529         return SSL3_AD_BAD_CERTIFICATE;
 530     case SSL_AD_UNSUPPORTED_CERTIFICATE:
 531         return SSL3_AD_UNSUPPORTED_CERTIFICATE;
 532     case SSL_AD_CERTIFICATE_REVOKED:
 533         return SSL3_AD_CERTIFICATE_REVOKED;
 534     case SSL_AD_CERTIFICATE_EXPIRED:
 535         return SSL3_AD_CERTIFICATE_EXPIRED;
 536     case SSL_AD_CERTIFICATE_UNKNOWN:
 537         return SSL3_AD_CERTIFICATE_UNKNOWN;
 538     case SSL_AD_ILLEGAL_PARAMETER:
 539         return SSL3_AD_ILLEGAL_PARAMETER;
 540     case SSL_AD_UNKNOWN_CA:
 541         return TLS1_AD_UNKNOWN_CA;
 542     case SSL_AD_ACCESS_DENIED:
 543         return TLS1_AD_ACCESS_DENIED;
 544     case SSL_AD_DECODE_ERROR:
 545         return TLS1_AD_DECODE_ERROR;
 546     case SSL_AD_DECRYPT_ERROR:
 547         return TLS1_AD_DECRYPT_ERROR;
 548     case SSL_AD_EXPORT_RESTRICTION:
 549         return TLS1_AD_EXPORT_RESTRICTION;
 550     case SSL_AD_PROTOCOL_VERSION:
 551         return TLS1_AD_PROTOCOL_VERSION;
 552     case SSL_AD_INSUFFICIENT_SECURITY:
 553         return TLS1_AD_INSUFFICIENT_SECURITY;
 554     case SSL_AD_INTERNAL_ERROR:
 555         return TLS1_AD_INTERNAL_ERROR;
 556     case SSL_AD_USER_CANCELLED:
 557         return TLS1_AD_USER_CANCELLED;
 558     case SSL_AD_NO_RENEGOTIATION:
 559         return TLS1_AD_NO_RENEGOTIATION;
 560     case SSL_AD_UNSUPPORTED_EXTENSION:
 561         return TLS1_AD_UNSUPPORTED_EXTENSION;
 562     case SSL_AD_CERTIFICATE_UNOBTAINABLE:
 563         return TLS1_AD_CERTIFICATE_UNOBTAINABLE;
 564     case SSL_AD_UNRECOGNIZED_NAME:
 565         return TLS1_AD_UNRECOGNIZED_NAME;
 566     case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE:
 567         return TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
 568     case SSL_AD_BAD_CERTIFICATE_HASH_VALUE:
 569         return TLS1_AD_BAD_CERTIFICATE_HASH_VALUE;
 570     case SSL_AD_UNKNOWN_PSK_IDENTITY:
 571         return TLS1_AD_UNKNOWN_PSK_IDENTITY;
 572     case SSL_AD_INAPPROPRIATE_FALLBACK:
 573         return TLS1_AD_INAPPROPRIATE_FALLBACK;
 574     case SSL_AD_NO_APPLICATION_PROTOCOL:
 575         return TLS1_AD_NO_APPLICATION_PROTOCOL;
 576     case SSL_AD_CERTIFICATE_REQUIRED:
 577         return SSL_AD_HANDSHAKE_FAILURE;
 578     case TLS13_AD_MISSING_EXTENSION:
 579         return SSL_AD_HANDSHAKE_FAILURE;
 580     default:
 581         return -1;
 582     }
 583 }