s2_srvr.c revision 280304
1/* ssl/s2_srvr.c */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58/* ==================================================================== 59 * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111 112#include "ssl_locl.h" 113#ifndef OPENSSL_NO_SSL2 114# include <stdio.h> 115# include <openssl/bio.h> 116# include <openssl/rand.h> 117# include <openssl/objects.h> 118# include <openssl/evp.h> 119 120static const SSL_METHOD *ssl2_get_server_method(int ver); 121static int get_client_master_key(SSL *s); 122static int get_client_hello(SSL *s); 123static int server_hello(SSL *s); 124static int get_client_finished(SSL *s); 125static int server_verify(SSL *s); 126static int server_finish(SSL *s); 127static int request_certificate(SSL *s); 128static int ssl_rsa_private_decrypt(CERT *c, int len, unsigned char *from, 129 unsigned char *to, int padding); 130# define BREAK break 131 132static const SSL_METHOD *ssl2_get_server_method(int ver) 133{ 134 if (ver == SSL2_VERSION) 135 return (SSLv2_server_method()); 136 else 137 return (NULL); 138} 139 140IMPLEMENT_ssl2_meth_func(SSLv2_server_method, 141 ssl2_accept, 142 ssl_undefined_function, ssl2_get_server_method) 143 144int ssl2_accept(SSL *s) 145{ 146 unsigned long l = (unsigned long)time(NULL); 147 BUF_MEM *buf = NULL; 148 int ret = -1; 149 long num1; 150 void (*cb) (const SSL *ssl, int type, int val) = NULL; 151 int new_state, state; 152 153 RAND_add(&l, sizeof(l), 0); 154 ERR_clear_error(); 155 clear_sys_error(); 156 157 if (s->info_callback != NULL) 158 cb = s->info_callback; 159 else if (s->ctx->info_callback != NULL) 160 cb = s->ctx->info_callback; 161 162 /* init things to blank */ 163 s->in_handshake++; 164 if (!SSL_in_init(s) || SSL_in_before(s)) 165 SSL_clear(s); 166 167 if (s->cert == NULL) { 168 SSLerr(SSL_F_SSL2_ACCEPT, SSL_R_NO_CERTIFICATE_SET); 169 return (-1); 170 } 171 172 clear_sys_error(); 173 for (;;) { 174 state = s->state; 175 176 switch (s->state) { 177 case SSL_ST_BEFORE: 178 case SSL_ST_ACCEPT: 179 case SSL_ST_BEFORE | SSL_ST_ACCEPT: 180 case SSL_ST_OK | SSL_ST_ACCEPT: 181 182 s->server = 1; 183 if (cb != NULL) 184 cb(s, SSL_CB_HANDSHAKE_START, 1); 185 186 s->version = SSL2_VERSION; 187 s->type = SSL_ST_ACCEPT; 188 189 if (s->init_buf == NULL) { 190 if ((buf = BUF_MEM_new()) == NULL) { 191 ret = -1; 192 goto end; 193 } 194 if (!BUF_MEM_grow 195 (buf, (int)SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)) { 196 BUF_MEM_free(buf); 197 ret = -1; 198 goto end; 199 } 200 s->init_buf = buf; 201 } 202 s->init_num = 0; 203 s->ctx->stats.sess_accept++; 204 s->handshake_func = ssl2_accept; 205 s->state = SSL2_ST_GET_CLIENT_HELLO_A; 206 BREAK; 207 208 case SSL2_ST_GET_CLIENT_HELLO_A: 209 case SSL2_ST_GET_CLIENT_HELLO_B: 210 case SSL2_ST_GET_CLIENT_HELLO_C: 211 s->shutdown = 0; 212 ret = get_client_hello(s); 213 if (ret <= 0) 214 goto end; 215 s->init_num = 0; 216 s->state = SSL2_ST_SEND_SERVER_HELLO_A; 217 BREAK; 218 219 case SSL2_ST_SEND_SERVER_HELLO_A: 220 case SSL2_ST_SEND_SERVER_HELLO_B: 221 ret = server_hello(s); 222 if (ret <= 0) 223 goto end; 224 s->init_num = 0; 225 if (!s->hit) { 226 s->state = SSL2_ST_GET_CLIENT_MASTER_KEY_A; 227 BREAK; 228 } else { 229 s->state = SSL2_ST_SERVER_START_ENCRYPTION; 230 BREAK; 231 } 232 case SSL2_ST_GET_CLIENT_MASTER_KEY_A: 233 case SSL2_ST_GET_CLIENT_MASTER_KEY_B: 234 ret = get_client_master_key(s); 235 if (ret <= 0) 236 goto end; 237 s->init_num = 0; 238 s->state = SSL2_ST_SERVER_START_ENCRYPTION; 239 BREAK; 240 241 case SSL2_ST_SERVER_START_ENCRYPTION: 242 /* 243 * Ok we how have sent all the stuff needed to start encrypting, 244 * the next packet back will be encrypted. 245 */ 246 if (!ssl2_enc_init(s, 0)) { 247 ret = -1; 248 goto end; 249 } 250 s->s2->clear_text = 0; 251 s->state = SSL2_ST_SEND_SERVER_VERIFY_A; 252 BREAK; 253 254 case SSL2_ST_SEND_SERVER_VERIFY_A: 255 case SSL2_ST_SEND_SERVER_VERIFY_B: 256 ret = server_verify(s); 257 if (ret <= 0) 258 goto end; 259 s->init_num = 0; 260 if (s->hit) { 261 /* 262 * If we are in here, we have been buffering the output, so 263 * we need to flush it and remove buffering from future 264 * traffic 265 */ 266 s->state = SSL2_ST_SEND_SERVER_VERIFY_C; 267 BREAK; 268 } else { 269 s->state = SSL2_ST_GET_CLIENT_FINISHED_A; 270 break; 271 } 272 273 case SSL2_ST_SEND_SERVER_VERIFY_C: 274 /* get the number of bytes to write */ 275 num1 = BIO_ctrl(s->wbio, BIO_CTRL_INFO, 0, NULL); 276 if (num1 > 0) { 277 s->rwstate = SSL_WRITING; 278 num1 = BIO_flush(s->wbio); 279 if (num1 <= 0) { 280 ret = -1; 281 goto end; 282 } 283 s->rwstate = SSL_NOTHING; 284 } 285 286 /* flushed and now remove buffering */ 287 s->wbio = BIO_pop(s->wbio); 288 289 s->state = SSL2_ST_GET_CLIENT_FINISHED_A; 290 BREAK; 291 292 case SSL2_ST_GET_CLIENT_FINISHED_A: 293 case SSL2_ST_GET_CLIENT_FINISHED_B: 294 ret = get_client_finished(s); 295 if (ret <= 0) 296 goto end; 297 s->init_num = 0; 298 s->state = SSL2_ST_SEND_REQUEST_CERTIFICATE_A; 299 BREAK; 300 301 case SSL2_ST_SEND_REQUEST_CERTIFICATE_A: 302 case SSL2_ST_SEND_REQUEST_CERTIFICATE_B: 303 case SSL2_ST_SEND_REQUEST_CERTIFICATE_C: 304 case SSL2_ST_SEND_REQUEST_CERTIFICATE_D: 305 /* 306 * don't do a 'request certificate' if we don't want to, or we 307 * already have one, and we only want to do it once. 308 */ 309 if (!(s->verify_mode & SSL_VERIFY_PEER) || 310 ((s->session->peer != NULL) && 311 (s->verify_mode & SSL_VERIFY_CLIENT_ONCE))) { 312 s->state = SSL2_ST_SEND_SERVER_FINISHED_A; 313 break; 314 } else { 315 ret = request_certificate(s); 316 if (ret <= 0) 317 goto end; 318 s->init_num = 0; 319 s->state = SSL2_ST_SEND_SERVER_FINISHED_A; 320 } 321 BREAK; 322 323 case SSL2_ST_SEND_SERVER_FINISHED_A: 324 case SSL2_ST_SEND_SERVER_FINISHED_B: 325 ret = server_finish(s); 326 if (ret <= 0) 327 goto end; 328 s->init_num = 0; 329 s->state = SSL_ST_OK; 330 break; 331 332 case SSL_ST_OK: 333 BUF_MEM_free(s->init_buf); 334 ssl_free_wbio_buffer(s); 335 s->init_buf = NULL; 336 s->init_num = 0; 337 /* ERR_clear_error(); */ 338 339 ssl_update_cache(s, SSL_SESS_CACHE_SERVER); 340 341 s->ctx->stats.sess_accept_good++; 342 /* s->server=1; */ 343 ret = 1; 344 345 if (cb != NULL) 346 cb(s, SSL_CB_HANDSHAKE_DONE, 1); 347 348 goto end; 349 /* BREAK; */ 350 351 default: 352 SSLerr(SSL_F_SSL2_ACCEPT, SSL_R_UNKNOWN_STATE); 353 ret = -1; 354 goto end; 355 /* BREAK; */ 356 } 357 358 if ((cb != NULL) && (s->state != state)) { 359 new_state = s->state; 360 s->state = state; 361 cb(s, SSL_CB_ACCEPT_LOOP, 1); 362 s->state = new_state; 363 } 364 } 365 end: 366 s->in_handshake--; 367 if (cb != NULL) 368 cb(s, SSL_CB_ACCEPT_EXIT, ret); 369 return (ret); 370} 371 372static int get_client_master_key(SSL *s) 373{ 374 int is_export, i, n, keya; 375 unsigned int ek; 376 unsigned long len; 377 unsigned char *p; 378 const SSL_CIPHER *cp; 379 const EVP_CIPHER *c; 380 const EVP_MD *md; 381 382 p = (unsigned char *)s->init_buf->data; 383 if (s->state == SSL2_ST_GET_CLIENT_MASTER_KEY_A) { 384 i = ssl2_read(s, (char *)&(p[s->init_num]), 10 - s->init_num); 385 386 if (i < (10 - s->init_num)) 387 return (ssl2_part_read(s, SSL_F_GET_CLIENT_MASTER_KEY, i)); 388 s->init_num = 10; 389 390 if (*(p++) != SSL2_MT_CLIENT_MASTER_KEY) { 391 if (p[-1] != SSL2_MT_ERROR) { 392 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 393 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, 394 SSL_R_READ_WRONG_PACKET_TYPE); 395 } else 396 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, SSL_R_PEER_ERROR); 397 return (-1); 398 } 399 400 cp = ssl2_get_cipher_by_char(p); 401 if (cp == NULL) { 402 ssl2_return_error(s, SSL2_PE_NO_CIPHER); 403 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, SSL_R_NO_CIPHER_MATCH); 404 return (-1); 405 } 406 s->session->cipher = cp; 407 408 p += 3; 409 n2s(p, i); 410 s->s2->tmp.clear = i; 411 n2s(p, i); 412 s->s2->tmp.enc = i; 413 n2s(p, i); 414 if (i > SSL_MAX_KEY_ARG_LENGTH) { 415 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 416 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, SSL_R_KEY_ARG_TOO_LONG); 417 return -1; 418 } 419 s->session->key_arg_length = i; 420 s->state = SSL2_ST_GET_CLIENT_MASTER_KEY_B; 421 } 422 423 /* SSL2_ST_GET_CLIENT_MASTER_KEY_B */ 424 p = (unsigned char *)s->init_buf->data; 425 if (s->init_buf->length < SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER) { 426 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 427 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR); 428 return -1; 429 } 430 keya = s->session->key_arg_length; 431 len = 432 10 + (unsigned long)s->s2->tmp.clear + (unsigned long)s->s2->tmp.enc + 433 (unsigned long)keya; 434 if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER) { 435 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 436 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, SSL_R_MESSAGE_TOO_LONG); 437 return -1; 438 } 439 n = (int)len - s->init_num; 440 i = ssl2_read(s, (char *)&(p[s->init_num]), n); 441 if (i != n) 442 return (ssl2_part_read(s, SSL_F_GET_CLIENT_MASTER_KEY, i)); 443 if (s->msg_callback) { 444 /* CLIENT-MASTER-KEY */ 445 s->msg_callback(0, s->version, 0, p, (size_t)len, s, 446 s->msg_callback_arg); 447 } 448 p += 10; 449 450 memcpy(s->session->key_arg, &(p[s->s2->tmp.clear + s->s2->tmp.enc]), 451 (unsigned int)keya); 452 453 if (s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) { 454 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 455 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, SSL_R_NO_PRIVATEKEY); 456 return (-1); 457 } 458 459 is_export = SSL_C_IS_EXPORT(s->session->cipher); 460 461 if (!ssl_cipher_get_evp(s->session, &c, &md, NULL, NULL, NULL)) { 462 ssl2_return_error(s, SSL2_PE_NO_CIPHER); 463 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, 464 SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS); 465 return (0); 466 } 467 468 if (s->session->cipher->algorithm2 & SSL2_CF_8_BYTE_ENC) { 469 is_export = 1; 470 ek = 8; 471 } else 472 ek = 5; 473 474 /* 475 * The format of the CLIENT-MASTER-KEY message is 476 * 1 byte message type 477 * 3 bytes cipher 478 * 2-byte clear key length (stored in s->s2->tmp.clear) 479 * 2-byte encrypted key length (stored in s->s2->tmp.enc) 480 * 2-byte key args length (IV etc) 481 * clear key 482 * encrypted key 483 * key args 484 * 485 * If the cipher is an export cipher, then the encrypted key bytes 486 * are a fixed portion of the total key (5 or 8 bytes). The size of 487 * this portion is in |ek|. If the cipher is not an export cipher, 488 * then the entire key material is encrypted (i.e., clear key length 489 * must be zero). 490 */ 491 if ((!is_export && s->s2->tmp.clear != 0) || 492 (is_export && s->s2->tmp.clear + ek != (unsigned int)EVP_CIPHER_key_length(c))) { 493 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 494 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_BAD_LENGTH); 495 return -1; 496 } 497 /* 498 * The encrypted blob must decrypt to the encrypted portion of the key. 499 * Decryption can't be expanding, so if we don't have enough encrypted 500 * bytes to fit the key in the buffer, stop now. 501 */ 502 if ((is_export && s->s2->tmp.enc < ek) || 503 (!is_export && s->s2->tmp.enc < (unsigned int)EVP_CIPHER_key_length(c))) { 504 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 505 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_LENGTH_TOO_SHORT); 506 return -1; 507 } 508 509 i = ssl_rsa_private_decrypt(s->cert, s->s2->tmp.enc, 510 &(p[s->s2->tmp.clear]), 511 &(p[s->s2->tmp.clear]), 512 (s->s2->ssl2_rollback) ? RSA_SSLV23_PADDING : 513 RSA_PKCS1_PADDING); 514 515 /* bad decrypt */ 516# if 1 517 /* 518 * If a bad decrypt, continue with protocol but with a random master 519 * secret (Bleichenbacher attack) 520 */ 521 if ((i < 0) || ((!is_export && i != EVP_CIPHER_key_length(c)) 522 || (is_export && i != (int)ek))) { 523 ERR_clear_error(); 524 if (is_export) 525 i = ek; 526 else 527 i = EVP_CIPHER_key_length(c); 528 if (RAND_pseudo_bytes(&p[s->s2->tmp.clear], i) <= 0) 529 return 0; 530 } 531# else 532 if (i < 0) { 533 error = 1; 534 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, SSL_R_BAD_RSA_DECRYPT); 535 } 536 /* incorrect number of key bytes for non export cipher */ 537 else if ((!is_export && (i != EVP_CIPHER_key_length(c))) 538 || (is_export && ((i != ek) || (s->s2->tmp.clear + i != 539 EVP_CIPHER_key_length(c))))) { 540 error = 1; 541 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, SSL_R_WRONG_NUMBER_OF_KEY_BITS); 542 } 543 if (error) { 544 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 545 return (-1); 546 } 547# endif 548 549 if (is_export) 550 i = EVP_CIPHER_key_length(c); 551 552 if (i > SSL_MAX_MASTER_KEY_LENGTH) { 553 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 554 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR); 555 return -1; 556 } 557 s->session->master_key_length = i; 558 memcpy(s->session->master_key, p, (unsigned int)i); 559 return (1); 560} 561 562static int get_client_hello(SSL *s) 563{ 564 int i, n; 565 unsigned long len; 566 unsigned char *p; 567 STACK_OF(SSL_CIPHER) *cs; /* a stack of SSL_CIPHERS */ 568 STACK_OF(SSL_CIPHER) *cl; /* the ones we want to use */ 569 STACK_OF(SSL_CIPHER) *prio, *allow; 570 int z; 571 572 /* 573 * This is a bit of a hack to check for the correct packet type the first 574 * time round. 575 */ 576 if (s->state == SSL2_ST_GET_CLIENT_HELLO_A) { 577 s->first_packet = 1; 578 s->state = SSL2_ST_GET_CLIENT_HELLO_B; 579 } 580 581 p = (unsigned char *)s->init_buf->data; 582 if (s->state == SSL2_ST_GET_CLIENT_HELLO_B) { 583 i = ssl2_read(s, (char *)&(p[s->init_num]), 9 - s->init_num); 584 if (i < (9 - s->init_num)) 585 return (ssl2_part_read(s, SSL_F_GET_CLIENT_HELLO, i)); 586 s->init_num = 9; 587 588 if (*(p++) != SSL2_MT_CLIENT_HELLO) { 589 if (p[-1] != SSL2_MT_ERROR) { 590 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 591 SSLerr(SSL_F_GET_CLIENT_HELLO, SSL_R_READ_WRONG_PACKET_TYPE); 592 } else 593 SSLerr(SSL_F_GET_CLIENT_HELLO, SSL_R_PEER_ERROR); 594 return (-1); 595 } 596 n2s(p, i); 597 if (i < s->version) 598 s->version = i; 599 n2s(p, i); 600 s->s2->tmp.cipher_spec_length = i; 601 n2s(p, i); 602 s->s2->tmp.session_id_length = i; 603 n2s(p, i); 604 s->s2->challenge_length = i; 605 if ((i < SSL2_MIN_CHALLENGE_LENGTH) || 606 (i > SSL2_MAX_CHALLENGE_LENGTH)) { 607 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 608 SSLerr(SSL_F_GET_CLIENT_HELLO, SSL_R_INVALID_CHALLENGE_LENGTH); 609 return (-1); 610 } 611 s->state = SSL2_ST_GET_CLIENT_HELLO_C; 612 } 613 614 /* SSL2_ST_GET_CLIENT_HELLO_C */ 615 p = (unsigned char *)s->init_buf->data; 616 len = 617 9 + (unsigned long)s->s2->tmp.cipher_spec_length + 618 (unsigned long)s->s2->challenge_length + 619 (unsigned long)s->s2->tmp.session_id_length; 620 if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER) { 621 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 622 SSLerr(SSL_F_GET_CLIENT_HELLO, SSL_R_MESSAGE_TOO_LONG); 623 return -1; 624 } 625 n = (int)len - s->init_num; 626 i = ssl2_read(s, (char *)&(p[s->init_num]), n); 627 if (i != n) 628 return (ssl2_part_read(s, SSL_F_GET_CLIENT_HELLO, i)); 629 if (s->msg_callback) { 630 /* CLIENT-HELLO */ 631 s->msg_callback(0, s->version, 0, p, (size_t)len, s, 632 s->msg_callback_arg); 633 } 634 p += 9; 635 636 /* 637 * get session-id before cipher stuff so we can get out session structure 638 * if it is cached 639 */ 640 /* session-id */ 641 if ((s->s2->tmp.session_id_length != 0) && 642 (s->s2->tmp.session_id_length != SSL2_SSL_SESSION_ID_LENGTH)) { 643 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 644 SSLerr(SSL_F_GET_CLIENT_HELLO, SSL_R_BAD_SSL_SESSION_ID_LENGTH); 645 return (-1); 646 } 647 648 if (s->s2->tmp.session_id_length == 0) { 649 if (!ssl_get_new_session(s, 1)) { 650 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 651 return (-1); 652 } 653 } else { 654 i = ssl_get_prev_session(s, &(p[s->s2->tmp.cipher_spec_length]), 655 s->s2->tmp.session_id_length, NULL); 656 if (i == 1) { /* previous session */ 657 s->hit = 1; 658 } else if (i == -1) { 659 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 660 return (-1); 661 } else { 662 if (s->cert == NULL) { 663 ssl2_return_error(s, SSL2_PE_NO_CERTIFICATE); 664 SSLerr(SSL_F_GET_CLIENT_HELLO, SSL_R_NO_CERTIFICATE_SET); 665 return (-1); 666 } 667 668 if (!ssl_get_new_session(s, 1)) { 669 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 670 return (-1); 671 } 672 } 673 } 674 675 if (!s->hit) { 676 cs = ssl_bytes_to_cipher_list(s, p, s->s2->tmp.cipher_spec_length, 677 &s->session->ciphers); 678 if (cs == NULL) 679 goto mem_err; 680 681 cl = SSL_get_ciphers(s); 682 683 if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE) { 684 prio = sk_SSL_CIPHER_dup(cl); 685 if (prio == NULL) 686 goto mem_err; 687 allow = cs; 688 } else { 689 prio = cs; 690 allow = cl; 691 } 692 for (z = 0; z < sk_SSL_CIPHER_num(prio); z++) { 693 if (sk_SSL_CIPHER_find(allow, sk_SSL_CIPHER_value(prio, z)) < 0) { 694 (void)sk_SSL_CIPHER_delete(prio, z); 695 z--; 696 } 697 } 698 if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE) { 699 sk_SSL_CIPHER_free(s->session->ciphers); 700 s->session->ciphers = prio; 701 } 702 /* 703 * s->session->ciphers should now have a list of ciphers that are on 704 * both the client and server. This list is ordered by the order the 705 * client sent the ciphers or in the order of the server's preference 706 * if SSL_OP_CIPHER_SERVER_PREFERENCE was set. 707 */ 708 } 709 p += s->s2->tmp.cipher_spec_length; 710 /* done cipher selection */ 711 712 /* session id extracted already */ 713 p += s->s2->tmp.session_id_length; 714 715 /* challenge */ 716 if (s->s2->challenge_length > sizeof s->s2->challenge) { 717 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 718 SSLerr(SSL_F_GET_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); 719 return -1; 720 } 721 memcpy(s->s2->challenge, p, (unsigned int)s->s2->challenge_length); 722 return (1); 723 mem_err: 724 SSLerr(SSL_F_GET_CLIENT_HELLO, ERR_R_MALLOC_FAILURE); 725 return (0); 726} 727 728static int server_hello(SSL *s) 729{ 730 unsigned char *p, *d; 731 int n, hit; 732 733 p = (unsigned char *)s->init_buf->data; 734 if (s->state == SSL2_ST_SEND_SERVER_HELLO_A) { 735 d = p + 11; 736 *(p++) = SSL2_MT_SERVER_HELLO; /* type */ 737 hit = s->hit; 738 *(p++) = (unsigned char)hit; 739# if 1 740 if (!hit) { 741 if (s->session->sess_cert != NULL) 742 /* 743 * This can't really happen because get_client_hello has 744 * called ssl_get_new_session, which does not set sess_cert. 745 */ 746 ssl_sess_cert_free(s->session->sess_cert); 747 s->session->sess_cert = ssl_sess_cert_new(); 748 if (s->session->sess_cert == NULL) { 749 SSLerr(SSL_F_SERVER_HELLO, ERR_R_MALLOC_FAILURE); 750 return (-1); 751 } 752 } 753 /* 754 * If 'hit' is set, then s->sess_cert may be non-NULL or NULL, 755 * depending on whether it survived in the internal cache or was 756 * retrieved from an external cache. If it is NULL, we cannot put any 757 * useful data in it anyway, so we don't touch it. 758 */ 759 760# else /* That's what used to be done when cert_st 761 * and sess_cert_st were * the same. */ 762 if (!hit) { /* else add cert to session */ 763 CRYPTO_add(&s->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 764 if (s->session->sess_cert != NULL) 765 ssl_cert_free(s->session->sess_cert); 766 s->session->sess_cert = s->cert; 767 } else { /* We have a session id-cache hit, if the * 768 * session-id has no certificate listed 769 * against * the 'cert' structure, grab the 770 * 'old' one * listed against the SSL 771 * connection */ 772 if (s->session->sess_cert == NULL) { 773 CRYPTO_add(&s->cert->references, 1, CRYPTO_LOCK_SSL_CERT); 774 s->session->sess_cert = s->cert; 775 } 776 } 777# endif 778 779 if (s->cert == NULL) { 780 ssl2_return_error(s, SSL2_PE_NO_CERTIFICATE); 781 SSLerr(SSL_F_SERVER_HELLO, SSL_R_NO_CERTIFICATE_SPECIFIED); 782 return (-1); 783 } 784 785 if (hit) { 786 *(p++) = 0; /* no certificate type */ 787 s2n(s->version, p); /* version */ 788 s2n(0, p); /* cert len */ 789 s2n(0, p); /* ciphers len */ 790 } else { 791 /* EAY EAY */ 792 /* put certificate type */ 793 *(p++) = SSL2_CT_X509_CERTIFICATE; 794 s2n(s->version, p); /* version */ 795 n = i2d_X509(s->cert->pkeys[SSL_PKEY_RSA_ENC].x509, NULL); 796 s2n(n, p); /* certificate length */ 797 i2d_X509(s->cert->pkeys[SSL_PKEY_RSA_ENC].x509, &d); 798 n = 0; 799 800 /* 801 * lets send out the ciphers we like in the prefered order 802 */ 803 n = ssl_cipher_list_to_bytes(s, s->session->ciphers, d, 0); 804 d += n; 805 s2n(n, p); /* add cipher length */ 806 } 807 808 /* make and send conn_id */ 809 s2n(SSL2_CONNECTION_ID_LENGTH, p); /* add conn_id length */ 810 s->s2->conn_id_length = SSL2_CONNECTION_ID_LENGTH; 811 if (RAND_pseudo_bytes(s->s2->conn_id, (int)s->s2->conn_id_length) <= 812 0) 813 return -1; 814 memcpy(d, s->s2->conn_id, SSL2_CONNECTION_ID_LENGTH); 815 d += SSL2_CONNECTION_ID_LENGTH; 816 817 s->state = SSL2_ST_SEND_SERVER_HELLO_B; 818 s->init_num = d - (unsigned char *)s->init_buf->data; 819 s->init_off = 0; 820 } 821 /* SSL2_ST_SEND_SERVER_HELLO_B */ 822 /* 823 * If we are using TCP/IP, the performance is bad if we do 2 writes 824 * without a read between them. This occurs when Session-id reuse is 825 * used, so I will put in a buffering module 826 */ 827 if (s->hit) { 828 if (!ssl_init_wbio_buffer(s, 1)) 829 return (-1); 830 } 831 832 return (ssl2_do_write(s)); 833} 834 835static int get_client_finished(SSL *s) 836{ 837 unsigned char *p; 838 int i, n; 839 unsigned long len; 840 841 p = (unsigned char *)s->init_buf->data; 842 if (s->state == SSL2_ST_GET_CLIENT_FINISHED_A) { 843 i = ssl2_read(s, (char *)&(p[s->init_num]), 1 - s->init_num); 844 if (i < 1 - s->init_num) 845 return (ssl2_part_read(s, SSL_F_GET_CLIENT_FINISHED, i)); 846 s->init_num += i; 847 848 if (*p != SSL2_MT_CLIENT_FINISHED) { 849 if (*p != SSL2_MT_ERROR) { 850 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 851 SSLerr(SSL_F_GET_CLIENT_FINISHED, 852 SSL_R_READ_WRONG_PACKET_TYPE); 853 } else { 854 SSLerr(SSL_F_GET_CLIENT_FINISHED, SSL_R_PEER_ERROR); 855 /* try to read the error message */ 856 i = ssl2_read(s, (char *)&(p[s->init_num]), 3 - s->init_num); 857 return ssl2_part_read(s, SSL_F_GET_SERVER_VERIFY, i); 858 } 859 return (-1); 860 } 861 s->state = SSL2_ST_GET_CLIENT_FINISHED_B; 862 } 863 864 /* SSL2_ST_GET_CLIENT_FINISHED_B */ 865 if (s->s2->conn_id_length > sizeof s->s2->conn_id) { 866 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 867 SSLerr(SSL_F_GET_CLIENT_FINISHED, ERR_R_INTERNAL_ERROR); 868 return -1; 869 } 870 len = 1 + (unsigned long)s->s2->conn_id_length; 871 n = (int)len - s->init_num; 872 i = ssl2_read(s, (char *)&(p[s->init_num]), n); 873 if (i < n) { 874 return (ssl2_part_read(s, SSL_F_GET_CLIENT_FINISHED, i)); 875 } 876 if (s->msg_callback) { 877 /* CLIENT-FINISHED */ 878 s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); 879 } 880 p += 1; 881 if (memcmp(p, s->s2->conn_id, s->s2->conn_id_length) != 0) { 882 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 883 SSLerr(SSL_F_GET_CLIENT_FINISHED, SSL_R_CONNECTION_ID_IS_DIFFERENT); 884 return (-1); 885 } 886 return (1); 887} 888 889static int server_verify(SSL *s) 890{ 891 unsigned char *p; 892 893 if (s->state == SSL2_ST_SEND_SERVER_VERIFY_A) { 894 p = (unsigned char *)s->init_buf->data; 895 *(p++) = SSL2_MT_SERVER_VERIFY; 896 if (s->s2->challenge_length > sizeof s->s2->challenge) { 897 SSLerr(SSL_F_SERVER_VERIFY, ERR_R_INTERNAL_ERROR); 898 return -1; 899 } 900 memcpy(p, s->s2->challenge, (unsigned int)s->s2->challenge_length); 901 /* p+=s->s2->challenge_length; */ 902 903 s->state = SSL2_ST_SEND_SERVER_VERIFY_B; 904 s->init_num = s->s2->challenge_length + 1; 905 s->init_off = 0; 906 } 907 return (ssl2_do_write(s)); 908} 909 910static int server_finish(SSL *s) 911{ 912 unsigned char *p; 913 914 if (s->state == SSL2_ST_SEND_SERVER_FINISHED_A) { 915 p = (unsigned char *)s->init_buf->data; 916 *(p++) = SSL2_MT_SERVER_FINISHED; 917 918 if (s->session->session_id_length > sizeof s->session->session_id) { 919 SSLerr(SSL_F_SERVER_FINISH, ERR_R_INTERNAL_ERROR); 920 return -1; 921 } 922 memcpy(p, s->session->session_id, 923 (unsigned int)s->session->session_id_length); 924 /* p+=s->session->session_id_length; */ 925 926 s->state = SSL2_ST_SEND_SERVER_FINISHED_B; 927 s->init_num = s->session->session_id_length + 1; 928 s->init_off = 0; 929 } 930 931 /* SSL2_ST_SEND_SERVER_FINISHED_B */ 932 return (ssl2_do_write(s)); 933} 934 935/* send the request and check the response */ 936static int request_certificate(SSL *s) 937{ 938 const unsigned char *cp; 939 unsigned char *p, *p2, *buf2; 940 unsigned char *ccd; 941 int i, j, ctype, ret = -1; 942 unsigned long len; 943 X509 *x509 = NULL; 944 STACK_OF(X509) *sk = NULL; 945 946 ccd = s->s2->tmp.ccl; 947 if (s->state == SSL2_ST_SEND_REQUEST_CERTIFICATE_A) { 948 p = (unsigned char *)s->init_buf->data; 949 *(p++) = SSL2_MT_REQUEST_CERTIFICATE; 950 *(p++) = SSL2_AT_MD5_WITH_RSA_ENCRYPTION; 951 if (RAND_pseudo_bytes(ccd, SSL2_MIN_CERT_CHALLENGE_LENGTH) <= 0) 952 return -1; 953 memcpy(p, ccd, SSL2_MIN_CERT_CHALLENGE_LENGTH); 954 955 s->state = SSL2_ST_SEND_REQUEST_CERTIFICATE_B; 956 s->init_num = SSL2_MIN_CERT_CHALLENGE_LENGTH + 2; 957 s->init_off = 0; 958 } 959 960 if (s->state == SSL2_ST_SEND_REQUEST_CERTIFICATE_B) { 961 i = ssl2_do_write(s); 962 if (i <= 0) { 963 ret = i; 964 goto end; 965 } 966 967 s->init_num = 0; 968 s->state = SSL2_ST_SEND_REQUEST_CERTIFICATE_C; 969 } 970 971 if (s->state == SSL2_ST_SEND_REQUEST_CERTIFICATE_C) { 972 p = (unsigned char *)s->init_buf->data; 973 /* try to read 6 octets ... */ 974 i = ssl2_read(s, (char *)&(p[s->init_num]), 6 - s->init_num); 975 /* 976 * ... but don't call ssl2_part_read now if we got at least 3 977 * (probably NO-CERTIFICATE-ERROR) 978 */ 979 if (i < 3 - s->init_num) { 980 ret = ssl2_part_read(s, SSL_F_REQUEST_CERTIFICATE, i); 981 goto end; 982 } 983 s->init_num += i; 984 985 if ((s->init_num >= 3) && (p[0] == SSL2_MT_ERROR)) { 986 n2s(p, i); 987 if (i != SSL2_PE_NO_CERTIFICATE) { 988 /* 989 * not the error message we expected -- let ssl2_part_read 990 * handle it 991 */ 992 s->init_num -= 3; 993 ret = ssl2_part_read(s, SSL_F_REQUEST_CERTIFICATE, 3); 994 goto end; 995 } 996 997 if (s->msg_callback) { 998 /* ERROR */ 999 s->msg_callback(0, s->version, 0, p, 3, s, 1000 s->msg_callback_arg); 1001 } 1002 1003 /* 1004 * this is the one place where we can recover from an SSL 2.0 1005 * error 1006 */ 1007 1008 if (s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT) { 1009 ssl2_return_error(s, SSL2_PE_BAD_CERTIFICATE); 1010 SSLerr(SSL_F_REQUEST_CERTIFICATE, 1011 SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE); 1012 goto end; 1013 } 1014 ret = 1; 1015 goto end; 1016 } 1017 if ((*(p++) != SSL2_MT_CLIENT_CERTIFICATE) || (s->init_num < 6)) { 1018 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 1019 SSLerr(SSL_F_REQUEST_CERTIFICATE, SSL_R_SHORT_READ); 1020 goto end; 1021 } 1022 if (s->init_num != 6) { 1023 SSLerr(SSL_F_REQUEST_CERTIFICATE, ERR_R_INTERNAL_ERROR); 1024 goto end; 1025 } 1026 1027 /* ok we have a response */ 1028 /* certificate type, there is only one right now. */ 1029 ctype = *(p++); 1030 if (ctype != SSL2_AT_MD5_WITH_RSA_ENCRYPTION) { 1031 ssl2_return_error(s, SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE); 1032 SSLerr(SSL_F_REQUEST_CERTIFICATE, SSL_R_BAD_RESPONSE_ARGUMENT); 1033 goto end; 1034 } 1035 n2s(p, i); 1036 s->s2->tmp.clen = i; 1037 n2s(p, i); 1038 s->s2->tmp.rlen = i; 1039 s->state = SSL2_ST_SEND_REQUEST_CERTIFICATE_D; 1040 } 1041 1042 /* SSL2_ST_SEND_REQUEST_CERTIFICATE_D */ 1043 p = (unsigned char *)s->init_buf->data; 1044 len = 6 + (unsigned long)s->s2->tmp.clen + (unsigned long)s->s2->tmp.rlen; 1045 if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER) { 1046 SSLerr(SSL_F_REQUEST_CERTIFICATE, SSL_R_MESSAGE_TOO_LONG); 1047 goto end; 1048 } 1049 j = (int)len - s->init_num; 1050 i = ssl2_read(s, (char *)&(p[s->init_num]), j); 1051 if (i < j) { 1052 ret = ssl2_part_read(s, SSL_F_REQUEST_CERTIFICATE, i); 1053 goto end; 1054 } 1055 if (s->msg_callback) { 1056 /* CLIENT-CERTIFICATE */ 1057 s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); 1058 } 1059 p += 6; 1060 1061 cp = p; 1062 x509 = (X509 *)d2i_X509(NULL, &cp, (long)s->s2->tmp.clen); 1063 if (x509 == NULL) { 1064 SSLerr(SSL_F_REQUEST_CERTIFICATE, ERR_R_X509_LIB); 1065 goto msg_end; 1066 } 1067 1068 if (((sk = sk_X509_new_null()) == NULL) || (!sk_X509_push(sk, x509))) { 1069 SSLerr(SSL_F_REQUEST_CERTIFICATE, ERR_R_MALLOC_FAILURE); 1070 goto msg_end; 1071 } 1072 1073 i = ssl_verify_cert_chain(s, sk); 1074 1075 if (i > 0) { /* we like the packet, now check the chksum */ 1076 EVP_MD_CTX ctx; 1077 EVP_PKEY *pkey = NULL; 1078 1079 EVP_MD_CTX_init(&ctx); 1080 if (!EVP_VerifyInit_ex(&ctx, s->ctx->rsa_md5, NULL) 1081 || !EVP_VerifyUpdate(&ctx, s->s2->key_material, 1082 s->s2->key_material_length) 1083 || !EVP_VerifyUpdate(&ctx, ccd, SSL2_MIN_CERT_CHALLENGE_LENGTH)) 1084 goto msg_end; 1085 1086 i = i2d_X509(s->cert->pkeys[SSL_PKEY_RSA_ENC].x509, NULL); 1087 buf2 = OPENSSL_malloc((unsigned int)i); 1088 if (buf2 == NULL) { 1089 SSLerr(SSL_F_REQUEST_CERTIFICATE, ERR_R_MALLOC_FAILURE); 1090 goto msg_end; 1091 } 1092 p2 = buf2; 1093 i = i2d_X509(s->cert->pkeys[SSL_PKEY_RSA_ENC].x509, &p2); 1094 if (!EVP_VerifyUpdate(&ctx, buf2, (unsigned int)i)) { 1095 OPENSSL_free(buf2); 1096 goto msg_end; 1097 } 1098 OPENSSL_free(buf2); 1099 1100 pkey = X509_get_pubkey(x509); 1101 if (pkey == NULL) 1102 goto end; 1103 i = EVP_VerifyFinal(&ctx, cp, s->s2->tmp.rlen, pkey); 1104 EVP_PKEY_free(pkey); 1105 EVP_MD_CTX_cleanup(&ctx); 1106 1107 if (i > 0) { 1108 if (s->session->peer != NULL) 1109 X509_free(s->session->peer); 1110 s->session->peer = x509; 1111 CRYPTO_add(&x509->references, 1, CRYPTO_LOCK_X509); 1112 s->session->verify_result = s->verify_result; 1113 ret = 1; 1114 goto end; 1115 } else { 1116 SSLerr(SSL_F_REQUEST_CERTIFICATE, SSL_R_BAD_CHECKSUM); 1117 goto msg_end; 1118 } 1119 } else { 1120 msg_end: 1121 ssl2_return_error(s, SSL2_PE_BAD_CERTIFICATE); 1122 } 1123 end: 1124 sk_X509_free(sk); 1125 X509_free(x509); 1126 return (ret); 1127} 1128 1129static int ssl_rsa_private_decrypt(CERT *c, int len, unsigned char *from, 1130 unsigned char *to, int padding) 1131{ 1132 RSA *rsa; 1133 int i; 1134 1135 if ((c == NULL) || (c->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL)) { 1136 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT, SSL_R_NO_PRIVATEKEY); 1137 return (-1); 1138 } 1139 if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey->type != EVP_PKEY_RSA) { 1140 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT, SSL_R_PUBLIC_KEY_IS_NOT_RSA); 1141 return (-1); 1142 } 1143 rsa = c->pkeys[SSL_PKEY_RSA_ENC].privatekey->pkey.rsa; 1144 1145 /* we have the public key */ 1146 i = RSA_private_decrypt(len, from, to, rsa, padding); 1147 if (i < 0) 1148 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT, ERR_R_RSA_LIB); 1149 return (i); 1150} 1151#else /* !OPENSSL_NO_SSL2 */ 1152 1153# if PEDANTIC 1154static void *dummy = &dummy; 1155# endif 1156 1157#endif 1158