1 /* 2 * TLS v1.0/v1.1/v1.2 server (RFC 2246, RFC 4346, RFC 5246) 3 * Copyright (c) 2006-2014, Jouni Malinen <j (at) w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 11 #include "common.h" 12 #include "crypto/sha1.h" 13 #include "crypto/tls.h" 14 #include "tlsv1_common.h" 15 #include "tlsv1_record.h" 16 #include "tlsv1_server.h" 17 #include "tlsv1_server_i.h" 18 19 /* TODO: 20 * Support for a message fragmented across several records (RFC 2246, 6.2.1) 21 */ 22 23 24 void tlsv1_server_log(struct tlsv1_server *conn, const char *fmt, ...) 25 { 26 va_list ap; 27 char *buf; 28 int buflen; 29 30 va_start(ap, fmt); 31 buflen = vsnprintf(NULL, 0, fmt, ap) + 1; 32 va_end(ap); 33 34 buf = os_malloc(buflen); 35 if (buf == NULL) 36 return; 37 va_start(ap, fmt); 38 vsnprintf(buf, buflen, fmt, ap); 39 va_end(ap); 40 41 wpa_printf(MSG_DEBUG, "TLSv1: %s", buf); 42 if (conn->log_cb) 43 conn->log_cb(conn->log_cb_ctx, buf); 44 45 os_free(buf); 46 } 47 48 49 void tlsv1_server_alert(struct tlsv1_server *conn, u8 level, u8 description) 50 { 51 conn->alert_level = level; 52 conn->alert_description = description; 53 } 54 55 56 int tlsv1_server_derive_keys(struct tlsv1_server *conn, 57 const u8 *pre_master_secret, 58 size_t pre_master_secret_len) 59 { 60 u8 seed[2 * TLS_RANDOM_LEN]; 61 u8 key_block[TLS_MAX_KEY_BLOCK_LEN]; 62 u8 *pos; 63 size_t key_block_len; 64 65 if (pre_master_secret) { 66 wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: pre_master_secret", 67 pre_master_secret, pre_master_secret_len); 68 os_memcpy(seed, conn->client_random, TLS_RANDOM_LEN); 69 os_memcpy(seed + TLS_RANDOM_LEN, conn->server_random, 70 TLS_RANDOM_LEN); 71 if (tls_prf(conn->rl.tls_version, 72 pre_master_secret, pre_master_secret_len, 73 "master secret", seed, 2 * TLS_RANDOM_LEN, 74 conn->master_secret, TLS_MASTER_SECRET_LEN)) { 75 wpa_printf(MSG_DEBUG, "TLSv1: Failed to derive " 76 "master_secret"); 77 return -1; 78 } 79 wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: master_secret", 80 conn->master_secret, TLS_MASTER_SECRET_LEN); 81 } 82 83 os_memcpy(seed, conn->server_random, TLS_RANDOM_LEN); 84 os_memcpy(seed + TLS_RANDOM_LEN, conn->client_random, TLS_RANDOM_LEN); 85 key_block_len = 2 * (conn->rl.hash_size + conn->rl.key_material_len + 86 conn->rl.iv_size); 87 if (tls_prf(conn->rl.tls_version, 88 conn->master_secret, TLS_MASTER_SECRET_LEN, 89 "key expansion", seed, 2 * TLS_RANDOM_LEN, 90 key_block, key_block_len)) { 91 wpa_printf(MSG_DEBUG, "TLSv1: Failed to derive key_block"); 92 return -1; 93 } 94 wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: key_block", 95 key_block, key_block_len); 96 97 pos = key_block; 98 99 /* client_write_MAC_secret */ 100 os_memcpy(conn->rl.read_mac_secret, pos, conn->rl.hash_size); 101 pos += conn->rl.hash_size; 102 /* server_write_MAC_secret */ 103 os_memcpy(conn->rl.write_mac_secret, pos, conn->rl.hash_size); 104 pos += conn->rl.hash_size; 105 106 /* client_write_key */ 107 os_memcpy(conn->rl.read_key, pos, conn->rl.key_material_len); 108 pos += conn->rl.key_material_len; 109 /* server_write_key */ 110 os_memcpy(conn->rl.write_key, pos, conn->rl.key_material_len); 111 pos += conn->rl.key_material_len; 112 113 /* client_write_IV */ 114 os_memcpy(conn->rl.read_iv, pos, conn->rl.iv_size); 115 pos += conn->rl.iv_size; 116 /* server_write_IV */ 117 os_memcpy(conn->rl.write_iv, pos, conn->rl.iv_size); 118 pos += conn->rl.iv_size; 119 120 return 0; 121 } 122 123 124 /** 125 * tlsv1_server_handshake - Process TLS handshake 126 * @conn: TLSv1 server connection data from tlsv1_server_init() 127 * @in_data: Input data from TLS peer 128 * @in_len: Input data length 129 * @out_len: Length of the output buffer. 130 * Returns: Pointer to output data, %NULL on failure 131 */ 132 u8 * tlsv1_server_handshake(struct tlsv1_server *conn, 133 const u8 *in_data, size_t in_len, 134 size_t *out_len) 135 { 136 const u8 *pos, *end; 137 u8 *msg = NULL, *in_msg, *in_pos, *in_end, alert, ct; 138 size_t in_msg_len; 139 int used; 140 141 if (in_data == NULL || in_len == 0) { 142 wpa_printf(MSG_DEBUG, "TLSv1: No input data to server"); 143 return NULL; 144 } 145 146 pos = in_data; 147 end = in_data + in_len; 148 in_msg = os_malloc(in_len); 149 if (in_msg == NULL) 150 return NULL; 151 152 /* Each received packet may include multiple records */ 153 while (pos < end) { 154 in_msg_len = in_len; 155 used = tlsv1_record_receive(&conn->rl, pos, end - pos, 156 in_msg, &in_msg_len, &alert); 157 if (used < 0) { 158 wpa_printf(MSG_DEBUG, "TLSv1: Processing received " 159 "record failed"); 160 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, alert); 161 goto failed; 162 } 163 if (used == 0) { 164 /* need more data */ 165 wpa_printf(MSG_DEBUG, "TLSv1: Partial processing not " 166 "yet supported"); 167 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, alert); 168 goto failed; 169 } 170 ct = pos[0]; 171 172 in_pos = in_msg; 173 in_end = in_msg + in_msg_len; 174 175 /* Each received record may include multiple messages of the 176 * same ContentType. */ 177 while (in_pos < in_end) { 178 in_msg_len = in_end - in_pos; 179 if (tlsv1_server_process_handshake(conn, ct, in_pos, 180 &in_msg_len) < 0) 181 goto failed; 182 in_pos += in_msg_len; 183 } 184 185 pos += used; 186 } 187 188 os_free(in_msg); 189 in_msg = NULL; 190 191 msg = tlsv1_server_handshake_write(conn, out_len); 192 193 failed: 194 os_free(in_msg); 195 if (conn->alert_level) { 196 if (conn->state == FAILED) { 197 /* Avoid alert loops */ 198 wpa_printf(MSG_DEBUG, "TLSv1: Drop alert loop"); 199 os_free(msg); 200 return NULL; 201 } 202 conn->state = FAILED; 203 os_free(msg); 204 msg = tlsv1_server_send_alert(conn, conn->alert_level, 205 conn->alert_description, 206 out_len); 207 } 208 209 return msg; 210 } 211 212 213 /** 214 * tlsv1_server_encrypt - Encrypt data into TLS tunnel 215 * @conn: TLSv1 server connection data from tlsv1_server_init() 216 * @in_data: Pointer to plaintext data to be encrypted 217 * @in_len: Input buffer length 218 * @out_data: Pointer to output buffer (encrypted TLS data) 219 * @out_len: Maximum out_data length 220 * Returns: Number of bytes written to out_data, -1 on failure 221 * 222 * This function is used after TLS handshake has been completed successfully to 223 * send data in the encrypted tunnel. 224 */ 225 int tlsv1_server_encrypt(struct tlsv1_server *conn, 226 const u8 *in_data, size_t in_len, 227 u8 *out_data, size_t out_len) 228 { 229 size_t rlen; 230 231 wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: Plaintext AppData", 232 in_data, in_len); 233 234 if (tlsv1_record_send(&conn->rl, TLS_CONTENT_TYPE_APPLICATION_DATA, 235 out_data, out_len, in_data, in_len, &rlen) < 0) { 236 wpa_printf(MSG_DEBUG, "TLSv1: Failed to create a record"); 237 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, 238 TLS_ALERT_INTERNAL_ERROR); 239 return -1; 240 } 241 242 return rlen; 243 } 244 245 246 /** 247 * tlsv1_server_decrypt - Decrypt data from TLS tunnel 248 * @conn: TLSv1 server connection data from tlsv1_server_init() 249 * @in_data: Pointer to input buffer (encrypted TLS data) 250 * @in_len: Input buffer length 251 * @out_data: Pointer to output buffer (decrypted data from TLS tunnel) 252 * @out_len: Maximum out_data length 253 * Returns: Number of bytes written to out_data, -1 on failure 254 * 255 * This function is used after TLS handshake has been completed successfully to 256 * receive data from the encrypted tunnel. 257 */ 258 int tlsv1_server_decrypt(struct tlsv1_server *conn, 259 const u8 *in_data, size_t in_len, 260 u8 *out_data, size_t out_len) 261 { 262 const u8 *in_end, *pos; 263 int used; 264 u8 alert, *out_end, *out_pos, ct; 265 size_t olen; 266 267 pos = in_data; 268 in_end = in_data + in_len; 269 out_pos = out_data; 270 out_end = out_data + out_len; 271 272 while (pos < in_end) { 273 ct = pos[0]; 274 olen = out_end - out_pos; 275 used = tlsv1_record_receive(&conn->rl, pos, in_end - pos, 276 out_pos, &olen, &alert); 277 if (used < 0) { 278 tlsv1_server_log(conn, "Record layer processing failed"); 279 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, alert); 280 return -1; 281 } 282 if (used == 0) { 283 /* need more data */ 284 wpa_printf(MSG_DEBUG, "TLSv1: Partial processing not " 285 "yet supported"); 286 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, alert); 287 return -1; 288 } 289 290 if (ct == TLS_CONTENT_TYPE_ALERT) { 291 if (olen < 2) { 292 tlsv1_server_log(conn, "Alert underflow"); 293 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, 294 TLS_ALERT_DECODE_ERROR); 295 return -1; 296 } 297 tlsv1_server_log(conn, "Received alert %d:%d", 298 out_pos[0], out_pos[1]); 299 if (out_pos[0] == TLS_ALERT_LEVEL_WARNING) { 300 /* Continue processing */ 301 pos += used; 302 continue; 303 } 304 305 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, 306 out_pos[1]); 307 return -1; 308 } 309 310 if (ct != TLS_CONTENT_TYPE_APPLICATION_DATA) { 311 tlsv1_server_log(conn, "Unexpected content type 0x%x", 312 pos[0]); 313 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, 314 TLS_ALERT_UNEXPECTED_MESSAGE); 315 return -1; 316 } 317 318 #ifdef CONFIG_TESTING_OPTIONS 319 if ((conn->test_flags & 320 (TLS_BREAK_VERIFY_DATA | TLS_BREAK_SRV_KEY_X_HASH | 321 TLS_BREAK_SRV_KEY_X_SIGNATURE)) && 322 !conn->test_failure_reported) { 323 tlsv1_server_log(conn, "TEST-FAILURE: Client ApplData received after invalid handshake"); 324 conn->test_failure_reported = 1; 325 } 326 #endif /* CONFIG_TESTING_OPTIONS */ 327 328 out_pos += olen; 329 if (out_pos > out_end) { 330 wpa_printf(MSG_DEBUG, "TLSv1: Buffer not large enough " 331 "for processing the received record"); 332 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, 333 TLS_ALERT_INTERNAL_ERROR); 334 return -1; 335 } 336 337 pos += used; 338 } 339 340 return out_pos - out_data; 341 } 342 343 344 /** 345 * tlsv1_server_global_init - Initialize TLSv1 server 346 * Returns: 0 on success, -1 on failure 347 * 348 * This function must be called before using any other TLSv1 server functions. 349 */ 350 int tlsv1_server_global_init(void) 351 { 352 return crypto_global_init(); 353 } 354 355 356 /** 357 * tlsv1_server_global_deinit - Deinitialize TLSv1 server 358 * 359 * This function can be used to deinitialize the TLSv1 server that was 360 * initialized by calling tlsv1_server_global_init(). No TLSv1 server functions 361 * can be called after this before calling tlsv1_server_global_init() again. 362 */ 363 void tlsv1_server_global_deinit(void) 364 { 365 crypto_global_deinit(); 366 } 367 368 369 /** 370 * tlsv1_server_init - Initialize TLSv1 server connection 371 * @cred: Pointer to server credentials from tlsv1_server_cred_alloc() 372 * Returns: Pointer to TLSv1 server connection data or %NULL on failure 373 */ 374 struct tlsv1_server * tlsv1_server_init(struct tlsv1_credentials *cred) 375 { 376 struct tlsv1_server *conn; 377 size_t count; 378 u16 *suites; 379 380 conn = os_zalloc(sizeof(*conn)); 381 if (conn == NULL) 382 return NULL; 383 384 conn->cred = cred; 385 386 conn->state = CLIENT_HELLO; 387 388 if (tls_verify_hash_init(&conn->verify) < 0) { 389 wpa_printf(MSG_DEBUG, "TLSv1: Failed to initialize verify " 390 "hash"); 391 os_free(conn); 392 return NULL; 393 } 394 395 count = 0; 396 suites = conn->cipher_suites; 397 suites[count++] = TLS_DHE_RSA_WITH_AES_256_CBC_SHA256; 398 suites[count++] = TLS_RSA_WITH_AES_256_CBC_SHA256; 399 suites[count++] = TLS_DHE_RSA_WITH_AES_256_CBC_SHA; 400 suites[count++] = TLS_RSA_WITH_AES_256_CBC_SHA; 401 suites[count++] = TLS_DHE_RSA_WITH_AES_128_CBC_SHA256; 402 suites[count++] = TLS_RSA_WITH_AES_128_CBC_SHA256; 403 suites[count++] = TLS_DHE_RSA_WITH_AES_128_CBC_SHA; 404 suites[count++] = TLS_RSA_WITH_AES_128_CBC_SHA; 405 suites[count++] = TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA; 406 suites[count++] = TLS_RSA_WITH_3DES_EDE_CBC_SHA; 407 suites[count++] = TLS_RSA_WITH_RC4_128_SHA; 408 suites[count++] = TLS_RSA_WITH_RC4_128_MD5; 409 conn->num_cipher_suites = count; 410 411 return conn; 412 } 413 414 415 static void tlsv1_server_clear_data(struct tlsv1_server *conn) 416 { 417 tlsv1_record_set_cipher_suite(&conn->rl, TLS_NULL_WITH_NULL_NULL); 418 tlsv1_record_change_write_cipher(&conn->rl); 419 tlsv1_record_change_read_cipher(&conn->rl); 420 tls_verify_hash_free(&conn->verify); 421 422 crypto_public_key_free(conn->client_rsa_key); 423 conn->client_rsa_key = NULL; 424 425 os_free(conn->session_ticket); 426 conn->session_ticket = NULL; 427 conn->session_ticket_len = 0; 428 conn->use_session_ticket = 0; 429 430 os_free(conn->dh_secret); 431 conn->dh_secret = NULL; 432 conn->dh_secret_len = 0; 433 } 434 435 436 /** 437 * tlsv1_server_deinit - Deinitialize TLSv1 server connection 438 * @conn: TLSv1 server connection data from tlsv1_server_init() 439 */ 440 void tlsv1_server_deinit(struct tlsv1_server *conn) 441 { 442 tlsv1_server_clear_data(conn); 443 os_free(conn); 444 } 445 446 447 /** 448 * tlsv1_server_established - Check whether connection has been established 449 * @conn: TLSv1 server connection data from tlsv1_server_init() 450 * Returns: 1 if connection is established, 0 if not 451 */ 452 int tlsv1_server_established(struct tlsv1_server *conn) 453 { 454 return conn->state == ESTABLISHED; 455 } 456 457 458 /** 459 * tlsv1_server_prf - Use TLS-PRF to derive keying material 460 * @conn: TLSv1 server connection data from tlsv1_server_init() 461 * @label: Label (e.g., description of the key) for PRF 462 * @server_random_first: seed is 0 = client_random|server_random, 463 * 1 = server_random|client_random 464 * @out: Buffer for output data from TLS-PRF 465 * @out_len: Length of the output buffer 466 * Returns: 0 on success, -1 on failure 467 */ 468 int tlsv1_server_prf(struct tlsv1_server *conn, const char *label, 469 int server_random_first, u8 *out, size_t out_len) 470 { 471 u8 seed[2 * TLS_RANDOM_LEN]; 472 473 if (conn->state != ESTABLISHED) 474 return -1; 475 476 if (server_random_first) { 477 os_memcpy(seed, conn->server_random, TLS_RANDOM_LEN); 478 os_memcpy(seed + TLS_RANDOM_LEN, conn->client_random, 479 TLS_RANDOM_LEN); 480 } else { 481 os_memcpy(seed, conn->client_random, TLS_RANDOM_LEN); 482 os_memcpy(seed + TLS_RANDOM_LEN, conn->server_random, 483 TLS_RANDOM_LEN); 484 } 485 486 return tls_prf(conn->rl.tls_version, 487 conn->master_secret, TLS_MASTER_SECRET_LEN, 488 label, seed, 2 * TLS_RANDOM_LEN, out, out_len); 489 } 490 491 492 /** 493 * tlsv1_server_get_cipher - Get current cipher name 494 * @conn: TLSv1 server connection data from tlsv1_server_init() 495 * @buf: Buffer for the cipher name 496 * @buflen: buf size 497 * Returns: 0 on success, -1 on failure 498 * 499 * Get the name of the currently used cipher. 500 */ 501 int tlsv1_server_get_cipher(struct tlsv1_server *conn, char *buf, 502 size_t buflen) 503 { 504 char *cipher; 505 506 switch (conn->rl.cipher_suite) { 507 case TLS_RSA_WITH_RC4_128_MD5: 508 cipher = "RC4-MD5"; 509 break; 510 case TLS_RSA_WITH_RC4_128_SHA: 511 cipher = "RC4-SHA"; 512 break; 513 case TLS_RSA_WITH_DES_CBC_SHA: 514 cipher = "DES-CBC-SHA"; 515 break; 516 case TLS_RSA_WITH_3DES_EDE_CBC_SHA: 517 cipher = "DES-CBC3-SHA"; 518 break; 519 case TLS_DHE_RSA_WITH_DES_CBC_SHA: 520 cipher = "DHE-RSA-DES-CBC-SHA"; 521 break; 522 case TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA: 523 cipher = "DHE-RSA-DES-CBC3-SHA"; 524 break; 525 case TLS_DH_anon_WITH_RC4_128_MD5: 526 cipher = "ADH-RC4-MD5"; 527 break; 528 case TLS_DH_anon_WITH_DES_CBC_SHA: 529 cipher = "ADH-DES-SHA"; 530 break; 531 case TLS_DH_anon_WITH_3DES_EDE_CBC_SHA: 532 cipher = "ADH-DES-CBC3-SHA"; 533 break; 534 case TLS_RSA_WITH_AES_128_CBC_SHA: 535 cipher = "AES-128-SHA"; 536 break; 537 case TLS_DHE_RSA_WITH_AES_128_CBC_SHA: 538 cipher = "DHE-RSA-AES-128-SHA"; 539 break; 540 case TLS_DH_anon_WITH_AES_128_CBC_SHA: 541 cipher = "ADH-AES-128-SHA"; 542 break; 543 case TLS_RSA_WITH_AES_256_CBC_SHA: 544 cipher = "AES-256-SHA"; 545 break; 546 case TLS_DHE_RSA_WITH_AES_256_CBC_SHA: 547 cipher = "DHE-RSA-AES-256-SHA"; 548 break; 549 case TLS_DH_anon_WITH_AES_256_CBC_SHA: 550 cipher = "ADH-AES-256-SHA"; 551 break; 552 case TLS_RSA_WITH_AES_128_CBC_SHA256: 553 cipher = "AES-128-SHA256"; 554 break; 555 case TLS_RSA_WITH_AES_256_CBC_SHA256: 556 cipher = "AES-256-SHA256"; 557 break; 558 case TLS_DHE_RSA_WITH_AES_128_CBC_SHA256: 559 cipher = "DHE-RSA-AES-128-SHA256"; 560 break; 561 case TLS_DHE_RSA_WITH_AES_256_CBC_SHA256: 562 cipher = "DHE-RSA-AES-256-SHA256"; 563 break; 564 case TLS_DH_anon_WITH_AES_128_CBC_SHA256: 565 cipher = "ADH-AES-128-SHA256"; 566 break; 567 case TLS_DH_anon_WITH_AES_256_CBC_SHA256: 568 cipher = "ADH-AES-256-SHA256"; 569 break; 570 default: 571 return -1; 572 } 573 574 if (os_strlcpy(buf, cipher, buflen) >= buflen) 575 return -1; 576 return 0; 577 } 578 579 580 /** 581 * tlsv1_server_shutdown - Shutdown TLS connection 582 * @conn: TLSv1 server connection data from tlsv1_server_init() 583 * Returns: 0 on success, -1 on failure 584 */ 585 int tlsv1_server_shutdown(struct tlsv1_server *conn) 586 { 587 conn->state = CLIENT_HELLO; 588 589 if (tls_verify_hash_init(&conn->verify) < 0) { 590 wpa_printf(MSG_DEBUG, "TLSv1: Failed to re-initialize verify " 591 "hash"); 592 return -1; 593 } 594 595 tlsv1_server_clear_data(conn); 596 597 return 0; 598 } 599 600 601 /** 602 * tlsv1_server_resumed - Was session resumption used 603 * @conn: TLSv1 server connection data from tlsv1_server_init() 604 * Returns: 1 if current session used session resumption, 0 if not 605 */ 606 int tlsv1_server_resumed(struct tlsv1_server *conn) 607 { 608 return 0; 609 } 610 611 612 /** 613 * tlsv1_server_get_random - Get random data from TLS connection 614 * @conn: TLSv1 server connection data from tlsv1_server_init() 615 * @keys: Structure of random data (filled on success) 616 * Returns: 0 on success, -1 on failure 617 */ 618 int tlsv1_server_get_random(struct tlsv1_server *conn, struct tls_random *keys) 619 { 620 os_memset(keys, 0, sizeof(*keys)); 621 if (conn->state == CLIENT_HELLO) 622 return -1; 623 624 keys->client_random = conn->client_random; 625 keys->client_random_len = TLS_RANDOM_LEN; 626 627 if (conn->state != SERVER_HELLO) { 628 keys->server_random = conn->server_random; 629 keys->server_random_len = TLS_RANDOM_LEN; 630 } 631 632 return 0; 633 } 634 635 636 /** 637 * tlsv1_server_get_keyblock_size - Get TLS key_block size 638 * @conn: TLSv1 server connection data from tlsv1_server_init() 639 * Returns: Size of the key_block for the negotiated cipher suite or -1 on 640 * failure 641 */ 642 int tlsv1_server_get_keyblock_size(struct tlsv1_server *conn) 643 { 644 if (conn->state == CLIENT_HELLO || conn->state == SERVER_HELLO) 645 return -1; 646 647 return 2 * (conn->rl.hash_size + conn->rl.key_material_len + 648 conn->rl.iv_size); 649 } 650 651 652 /** 653 * tlsv1_server_set_cipher_list - Configure acceptable cipher suites 654 * @conn: TLSv1 server connection data from tlsv1_server_init() 655 * @ciphers: Zero (TLS_CIPHER_NONE) terminated list of allowed ciphers 656 * (TLS_CIPHER_*). 657 * Returns: 0 on success, -1 on failure 658 */ 659 int tlsv1_server_set_cipher_list(struct tlsv1_server *conn, u8 *ciphers) 660 { 661 size_t count; 662 u16 *suites; 663 664 /* TODO: implement proper configuration of cipher suites */ 665 if (ciphers[0] == TLS_CIPHER_ANON_DH_AES128_SHA) { 666 count = 0; 667 suites = conn->cipher_suites; 668 suites[count++] = TLS_RSA_WITH_AES_256_CBC_SHA; 669 suites[count++] = TLS_RSA_WITH_AES_128_CBC_SHA; 670 suites[count++] = TLS_RSA_WITH_3DES_EDE_CBC_SHA; 671 suites[count++] = TLS_RSA_WITH_RC4_128_SHA; 672 suites[count++] = TLS_RSA_WITH_RC4_128_MD5; 673 suites[count++] = TLS_DH_anon_WITH_AES_256_CBC_SHA; 674 suites[count++] = TLS_DH_anon_WITH_AES_128_CBC_SHA; 675 suites[count++] = TLS_DH_anon_WITH_3DES_EDE_CBC_SHA; 676 suites[count++] = TLS_DH_anon_WITH_RC4_128_MD5; 677 suites[count++] = TLS_DH_anon_WITH_DES_CBC_SHA; 678 conn->num_cipher_suites = count; 679 } 680 681 return 0; 682 } 683 684 685 int tlsv1_server_set_verify(struct tlsv1_server *conn, int verify_peer) 686 { 687 conn->verify_peer = verify_peer; 688 return 0; 689 } 690 691 692 void tlsv1_server_set_session_ticket_cb(struct tlsv1_server *conn, 693 tlsv1_server_session_ticket_cb cb, 694 void *ctx) 695 { 696 wpa_printf(MSG_DEBUG, "TLSv1: SessionTicket callback set %p (ctx %p)", 697 cb, ctx); 698 conn->session_ticket_cb = cb; 699 conn->session_ticket_cb_ctx = ctx; 700 } 701 702 703 void tlsv1_server_set_log_cb(struct tlsv1_server *conn, 704 void (*cb)(void *ctx, const char *msg), void *ctx) 705 { 706 conn->log_cb = cb; 707 conn->log_cb_ctx = ctx; 708 } 709 710 711 #ifdef CONFIG_TESTING_OPTIONS 712 void tlsv1_server_set_test_flags(struct tlsv1_server *conn, u32 flags) 713 { 714 conn->test_flags = flags; 715 } 716 717 718 static const u8 test_tls_prime15[1] = { 719 15 720 }; 721 722 static const u8 test_tls_prime511b[64] = { 723 0x50, 0xfb, 0xf1, 0xae, 0x01, 0xf1, 0xfe, 0xe6, 724 0xe1, 0xae, 0xdc, 0x1e, 0xbe, 0xfb, 0x9e, 0x58, 725 0x9a, 0xd7, 0x54, 0x9d, 0x6b, 0xb3, 0x78, 0xe2, 726 0x39, 0x7f, 0x30, 0x01, 0x25, 0xa1, 0xf9, 0x7c, 727 0x55, 0x0e, 0xa1, 0x15, 0xcc, 0x36, 0x34, 0xbb, 728 0x6c, 0x8b, 0x64, 0x45, 0x15, 0x7f, 0xd3, 0xe7, 729 0x31, 0xc8, 0x8e, 0x56, 0x8e, 0x95, 0xdc, 0xea, 730 0x9e, 0xdf, 0xf7, 0x56, 0xdd, 0xb0, 0x34, 0xdb 731 }; 732 733 static const u8 test_tls_prime767b[96] = { 734 0x4c, 0xdc, 0xb8, 0x21, 0x20, 0x9d, 0xe8, 0xa3, 735 0x53, 0xd9, 0x1c, 0x18, 0xc1, 0x3a, 0x58, 0x67, 736 0xa7, 0x85, 0xf9, 0x28, 0x9b, 0xce, 0xc0, 0xd1, 737 0x05, 0x84, 0x61, 0x97, 0xb2, 0x86, 0x1c, 0xd0, 738 0xd1, 0x96, 0x23, 0x29, 0x8c, 0xc5, 0x30, 0x68, 739 0x3e, 0xf9, 0x05, 0xba, 0x60, 0xeb, 0xdb, 0xee, 740 0x2d, 0xdf, 0x84, 0x65, 0x49, 0x87, 0x90, 0x2a, 741 0xc9, 0x8e, 0x34, 0x63, 0x6d, 0x9a, 0x2d, 0x32, 742 0x1c, 0x46, 0xd5, 0x4e, 0x20, 0x20, 0x90, 0xac, 743 0xd5, 0x48, 0x79, 0x99, 0x0c, 0xe6, 0xed, 0xbf, 744 0x79, 0xc2, 0x47, 0x50, 0x95, 0x38, 0x38, 0xbc, 745 0xde, 0xb0, 0xd2, 0xe8, 0x97, 0xcb, 0x22, 0xbb 746 }; 747 748 static const u8 test_tls_prime58[128] = { 749 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 750 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 751 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 752 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 753 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 754 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 755 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 756 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 757 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 758 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 759 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 760 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 761 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 762 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 763 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 764 0x03, 0xc1, 0xba, 0xc8, 0x25, 0xbe, 0x2d, 0xf3 765 }; 766 767 static const u8 test_tls_non_prime[] = { 768 /* 769 * This is not a prime and the value has the following factors: 770 * 13736783488716579923 * 16254860191773456563 * 18229434976173670763 * 771 * 11112313018289079419 * 10260802278580253339 * 12394009491575311499 * 772 * 12419059668711064739 * 14317973192687985827 * 10498605410533203179 * 773 * 16338688760390249003 * 11128963991123878883 * 12990532258280301419 * 774 * 3 775 */ 776 0x0C, 0x8C, 0x36, 0x9C, 0x6F, 0x71, 0x2E, 0xA7, 777 0xAB, 0x32, 0xD3, 0x0F, 0x68, 0x3D, 0xB2, 0x6D, 778 0x81, 0xDD, 0xC4, 0x84, 0x0D, 0x9C, 0x6E, 0x36, 779 0x29, 0x70, 0xF3, 0x1E, 0x9A, 0x42, 0x0B, 0x67, 780 0x82, 0x6B, 0xB1, 0xF2, 0xAF, 0x55, 0x28, 0xE7, 781 0xDB, 0x67, 0x6C, 0xF7, 0x6B, 0xAC, 0xAC, 0xE5, 782 0xF7, 0x9F, 0xD4, 0x63, 0x55, 0x70, 0x32, 0x7C, 783 0x70, 0xFB, 0xAF, 0xB8, 0xEB, 0x37, 0xCF, 0x3F, 784 0xFE, 0x94, 0x73, 0xF9, 0x7A, 0xC7, 0x12, 0x2E, 785 0x9B, 0xB4, 0x7D, 0x08, 0x60, 0x83, 0x43, 0x52, 786 0x83, 0x1E, 0xA5, 0xFC, 0xFA, 0x87, 0x12, 0xF4, 787 0x64, 0xE2, 0xCE, 0x71, 0x17, 0x72, 0xB6, 0xAB 788 }; 789 790 #endif /* CONFIG_TESTING_OPTIONS */ 791 792 793 void tlsv1_server_get_dh_p(struct tlsv1_server *conn, const u8 **dh_p, 794 size_t *dh_p_len) 795 { 796 *dh_p = conn->cred->dh_p; 797 *dh_p_len = conn->cred->dh_p_len; 798 799 #ifdef CONFIG_TESTING_OPTIONS 800 if (conn->test_flags & TLS_DHE_PRIME_511B) { 801 tlsv1_server_log(conn, "TESTING: Use short 511-bit prime with DHE"); 802 *dh_p = test_tls_prime511b; 803 *dh_p_len = sizeof(test_tls_prime511b); 804 } else if (conn->test_flags & TLS_DHE_PRIME_767B) { 805 tlsv1_server_log(conn, "TESTING: Use short 767-bit prime with DHE"); 806 *dh_p = test_tls_prime767b; 807 *dh_p_len = sizeof(test_tls_prime767b); 808 } else if (conn->test_flags & TLS_DHE_PRIME_15) { 809 tlsv1_server_log(conn, "TESTING: Use bogus 15 \"prime\" with DHE"); 810 *dh_p = test_tls_prime15; 811 *dh_p_len = sizeof(test_tls_prime15); 812 } else if (conn->test_flags & TLS_DHE_PRIME_58B) { 813 tlsv1_server_log(conn, "TESTING: Use short 58-bit prime in long container with DHE"); 814 *dh_p = test_tls_prime58; 815 *dh_p_len = sizeof(test_tls_prime58); 816 } else if (conn->test_flags & TLS_DHE_NON_PRIME) { 817 tlsv1_server_log(conn, "TESTING: Use claim non-prime as the DHE prime"); 818 *dh_p = test_tls_non_prime; 819 *dh_p_len = sizeof(test_tls_non_prime); 820 } 821 #endif /* CONFIG_TESTING_OPTIONS */ 822 } 823
