s2_srvr.c revision 295061
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 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 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, 143 ssl2_get_server_method) 144 145int ssl2_accept(SSL *s) 146 { 147 unsigned long l=(unsigned long)time(NULL); 148 BUF_MEM *buf=NULL; 149 int ret= -1; 150 long num1; 151 void (*cb)(const SSL *ssl,int type,int val)=NULL; 152 int new_state,state; 153 154 RAND_add(&l,sizeof(l),0); 155 ERR_clear_error(); 156 clear_sys_error(); 157 158 if (s->info_callback != NULL) 159 cb=s->info_callback; 160 else if (s->ctx->info_callback != NULL) 161 cb=s->ctx->info_callback; 162 163 /* init things to blank */ 164 s->in_handshake++; 165 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); 166 167 if (s->cert == NULL) 168 { 169 SSLerr(SSL_F_SSL2_ACCEPT,SSL_R_NO_CERTIFICATE_SET); 170 return(-1); 171 } 172 173 clear_sys_error(); 174 for (;;) 175 { 176 state=s->state; 177 178 switch (s->state) 179 { 180 case SSL_ST_BEFORE: 181 case SSL_ST_ACCEPT: 182 case SSL_ST_BEFORE|SSL_ST_ACCEPT: 183 case SSL_ST_OK|SSL_ST_ACCEPT: 184 185 s->server=1; 186 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); 187 188 s->version=SSL2_VERSION; 189 s->type=SSL_ST_ACCEPT; 190 191 buf=s->init_buf; 192 if ((buf == NULL) && ((buf=BUF_MEM_new()) == NULL)) 193 { ret= -1; goto end; } 194 if (!BUF_MEM_grow(buf,(int) 195 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)) 196 { ret= -1; goto end; } 197 s->init_buf=buf; 198 s->init_num=0; 199 s->ctx->stats.sess_accept++; 200 s->handshake_func=ssl2_accept; 201 s->state=SSL2_ST_GET_CLIENT_HELLO_A; 202 BREAK; 203 204 case SSL2_ST_GET_CLIENT_HELLO_A: 205 case SSL2_ST_GET_CLIENT_HELLO_B: 206 case SSL2_ST_GET_CLIENT_HELLO_C: 207 s->shutdown=0; 208 ret=get_client_hello(s); 209 if (ret <= 0) goto end; 210 s->init_num=0; 211 s->state=SSL2_ST_SEND_SERVER_HELLO_A; 212 BREAK; 213 214 case SSL2_ST_SEND_SERVER_HELLO_A: 215 case SSL2_ST_SEND_SERVER_HELLO_B: 216 ret=server_hello(s); 217 if (ret <= 0) goto end; 218 s->init_num=0; 219 if (!s->hit) 220 { 221 s->state=SSL2_ST_GET_CLIENT_MASTER_KEY_A; 222 BREAK; 223 } 224 else 225 { 226 s->state=SSL2_ST_SERVER_START_ENCRYPTION; 227 BREAK; 228 } 229 case SSL2_ST_GET_CLIENT_MASTER_KEY_A: 230 case SSL2_ST_GET_CLIENT_MASTER_KEY_B: 231 ret=get_client_master_key(s); 232 if (ret <= 0) goto end; 233 s->init_num=0; 234 s->state=SSL2_ST_SERVER_START_ENCRYPTION; 235 BREAK; 236 237 case SSL2_ST_SERVER_START_ENCRYPTION: 238 /* Ok we how have sent all the stuff needed to 239 * start encrypting, the next packet back will 240 * be encrypted. */ 241 if (!ssl2_enc_init(s,0)) 242 { ret= -1; goto end; } 243 s->s2->clear_text=0; 244 s->state=SSL2_ST_SEND_SERVER_VERIFY_A; 245 BREAK; 246 247 case SSL2_ST_SEND_SERVER_VERIFY_A: 248 case SSL2_ST_SEND_SERVER_VERIFY_B: 249 ret=server_verify(s); 250 if (ret <= 0) goto end; 251 s->init_num=0; 252 if (s->hit) 253 { 254 /* If we are in here, we have been 255 * buffering the output, so we need to 256 * flush it and remove buffering from 257 * future traffic */ 258 s->state=SSL2_ST_SEND_SERVER_VERIFY_C; 259 BREAK; 260 } 261 else 262 { 263 s->state=SSL2_ST_GET_CLIENT_FINISHED_A; 264 break; 265 } 266 267 case SSL2_ST_SEND_SERVER_VERIFY_C: 268 /* get the number of bytes to write */ 269 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL); 270 if (num1 > 0) 271 { 272 s->rwstate=SSL_WRITING; 273 num1=BIO_flush(s->wbio); 274 if (num1 <= 0) { ret= -1; goto end; } 275 s->rwstate=SSL_NOTHING; 276 } 277 278 /* flushed and now remove buffering */ 279 s->wbio=BIO_pop(s->wbio); 280 281 s->state=SSL2_ST_GET_CLIENT_FINISHED_A; 282 BREAK; 283 284 case SSL2_ST_GET_CLIENT_FINISHED_A: 285 case SSL2_ST_GET_CLIENT_FINISHED_B: 286 ret=get_client_finished(s); 287 if (ret <= 0) 288 goto end; 289 s->init_num=0; 290 s->state=SSL2_ST_SEND_REQUEST_CERTIFICATE_A; 291 BREAK; 292 293 case SSL2_ST_SEND_REQUEST_CERTIFICATE_A: 294 case SSL2_ST_SEND_REQUEST_CERTIFICATE_B: 295 case SSL2_ST_SEND_REQUEST_CERTIFICATE_C: 296 case SSL2_ST_SEND_REQUEST_CERTIFICATE_D: 297 /* don't do a 'request certificate' if we 298 * don't want to, or we already have one, and 299 * we only want to do it once. */ 300 if (!(s->verify_mode & SSL_VERIFY_PEER) || 301 ((s->session->peer != NULL) && 302 (s->verify_mode & SSL_VERIFY_CLIENT_ONCE))) 303 { 304 s->state=SSL2_ST_SEND_SERVER_FINISHED_A; 305 break; 306 } 307 else 308 { 309 ret=request_certificate(s); 310 if (ret <= 0) goto end; 311 s->init_num=0; 312 s->state=SSL2_ST_SEND_SERVER_FINISHED_A; 313 } 314 BREAK; 315 316 case SSL2_ST_SEND_SERVER_FINISHED_A: 317 case SSL2_ST_SEND_SERVER_FINISHED_B: 318 ret=server_finish(s); 319 if (ret <= 0) goto end; 320 s->init_num=0; 321 s->state=SSL_ST_OK; 322 break; 323 324 case SSL_ST_OK: 325 BUF_MEM_free(s->init_buf); 326 ssl_free_wbio_buffer(s); 327 s->init_buf=NULL; 328 s->init_num=0; 329 /* ERR_clear_error();*/ 330 331 ssl_update_cache(s,SSL_SESS_CACHE_SERVER); 332 333 s->ctx->stats.sess_accept_good++; 334 /* s->server=1; */ 335 ret=1; 336 337 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1); 338 339 goto end; 340 /* BREAK; */ 341 342 default: 343 SSLerr(SSL_F_SSL2_ACCEPT,SSL_R_UNKNOWN_STATE); 344 ret= -1; 345 goto end; 346 /* BREAK; */ 347 } 348 349 if ((cb != NULL) && (s->state != state)) 350 { 351 new_state=s->state; 352 s->state=state; 353 cb(s,SSL_CB_ACCEPT_LOOP,1); 354 s->state=new_state; 355 } 356 } 357end: 358 s->in_handshake--; 359 if (cb != NULL) 360 cb(s,SSL_CB_ACCEPT_EXIT,ret); 361 return(ret); 362 } 363 364static int get_client_master_key(SSL *s) 365 { 366 int is_export,i,n,keya,ek; 367 unsigned long len; 368 unsigned char *p; 369 SSL_CIPHER *cp; 370 const EVP_CIPHER *c; 371 const EVP_MD *md; 372 373 p=(unsigned char *)s->init_buf->data; 374 if (s->state == SSL2_ST_GET_CLIENT_MASTER_KEY_A) 375 { 376 i=ssl2_read(s,(char *)&(p[s->init_num]),10-s->init_num); 377 378 if (i < (10-s->init_num)) 379 return(ssl2_part_read(s,SSL_F_GET_CLIENT_MASTER_KEY,i)); 380 s->init_num = 10; 381 382 if (*(p++) != SSL2_MT_CLIENT_MASTER_KEY) 383 { 384 if (p[-1] != SSL2_MT_ERROR) 385 { 386 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 387 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_READ_WRONG_PACKET_TYPE); 388 } 389 else 390 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, SSL_R_PEER_ERROR); 391 return(-1); 392 } 393 394 cp=ssl2_get_cipher_by_char(p); 395 if (cp == NULL || sk_SSL_CIPHER_find(s->session->ciphers, cp) < 0) 396 { 397 ssl2_return_error(s,SSL2_PE_NO_CIPHER); 398 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, SSL_R_NO_CIPHER_MATCH); 399 return(-1); 400 } 401 s->session->cipher= cp; 402 403 p+=3; 404 n2s(p,i); s->s2->tmp.clear=i; 405 n2s(p,i); s->s2->tmp.enc=i; 406 n2s(p,i); 407 if(i > SSL_MAX_KEY_ARG_LENGTH) 408 { 409 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 410 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, SSL_R_KEY_ARG_TOO_LONG); 411 return -1; 412 } 413 s->session->key_arg_length=i; 414 s->state=SSL2_ST_GET_CLIENT_MASTER_KEY_B; 415 } 416 417 /* SSL2_ST_GET_CLIENT_MASTER_KEY_B */ 418 p=(unsigned char *)s->init_buf->data; 419 if (s->init_buf->length < SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER) 420 { 421 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 422 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR); 423 return -1; 424 } 425 keya=s->session->key_arg_length; 426 len = 10 + (unsigned long)s->s2->tmp.clear + (unsigned long)s->s2->tmp.enc + (unsigned long)keya; 427 if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER) 428 { 429 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 430 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_MESSAGE_TOO_LONG); 431 return -1; 432 } 433 n = (int)len - s->init_num; 434 i = ssl2_read(s,(char *)&(p[s->init_num]),n); 435 if (i != n) return(ssl2_part_read(s,SSL_F_GET_CLIENT_MASTER_KEY,i)); 436 if (s->msg_callback) 437 s->msg_callback(0, s->version, 0, p, (size_t)len, s, s->msg_callback_arg); /* CLIENT-MASTER-KEY */ 438 p += 10; 439 440 memcpy(s->session->key_arg,&(p[s->s2->tmp.clear+s->s2->tmp.enc]), 441 (unsigned int)keya); 442 443 if (s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL) 444 { 445 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 446 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_NO_PRIVATEKEY); 447 return(-1); 448 } 449 450 is_export=SSL_C_IS_EXPORT(s->session->cipher); 451 452 if (!ssl_cipher_get_evp(s->session,&c,&md,NULL)) 453 { 454 ssl2_return_error(s,SSL2_PE_NO_CIPHER); 455 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS); 456 return(0); 457 } 458 459 if (s->session->cipher->algorithm2 & SSL2_CF_8_BYTE_ENC) 460 { 461 is_export=1; 462 ek=8; 463 } 464 else 465 ek=5; 466 467 /* 468 * The format of the CLIENT-MASTER-KEY message is 469 * 1 byte message type 470 * 3 bytes cipher 471 * 2-byte clear key length (stored in s->s2->tmp.clear) 472 * 2-byte encrypted key length (stored in s->s2->tmp.enc) 473 * 2-byte key args length (IV etc) 474 * clear key 475 * encrypted key 476 * key args 477 * 478 * If the cipher is an export cipher, then the encrypted key bytes 479 * are a fixed portion of the total key (5 or 8 bytes). The size of 480 * this portion is in |ek|. If the cipher is not an export cipher, 481 * then the entire key material is encrypted (i.e., clear key length 482 * must be zero). 483 */ 484 if ((!is_export && s->s2->tmp.clear != 0) || 485 (is_export && s->s2->tmp.clear + ek != EVP_CIPHER_key_length(c))) { 486 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR); 487 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_BAD_LENGTH); 488 return -1; 489 } 490 /* 491 * The encrypted blob must decrypt to the encrypted portion of the key. 492 * Decryption can't be expanding, so if we don't have enough encrypted 493 * bytes to fit the key in the buffer, stop now. 494 */ 495 if ((is_export && s->s2->tmp.enc < ek) || 496 (!is_export && s->s2->tmp.enc < EVP_CIPHER_key_length(c))) { 497 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 498 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_LENGTH_TOO_SHORT); 499 return -1; 500 } 501 502 i = ssl_rsa_private_decrypt(s->cert, s->s2->tmp.enc, 503 &(p[s->s2->tmp.clear]), 504 &(p[s->s2->tmp.clear]), 505 (s->s2->ssl2_rollback) ? RSA_SSLV23_PADDING : 506 RSA_PKCS1_PADDING); 507 508 /* bad decrypt */ 509#if 1 510 /* If a bad decrypt, continue with protocol but with a 511 * random master secret (Bleichenbacher attack) */ 512 if ((i < 0) || ((!is_export && i != EVP_CIPHER_key_length(c)) 513 || (is_export && i != ek))) { 514 ERR_clear_error(); 515 if (is_export) 516 i=ek; 517 else 518 i=EVP_CIPHER_key_length(c); 519 if (RAND_pseudo_bytes(&p[s->s2->tmp.clear], i) <= 0) 520 return 0; 521 } 522#else 523 if (i < 0) 524 { 525 error=1; 526 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_BAD_RSA_DECRYPT); 527 } 528 /* incorrect number of key bytes for non export cipher */ 529 else if ((!is_export && (i != EVP_CIPHER_key_length(c))) 530 || (is_export && ((i != ek) || (s->s2->tmp.clear+i != 531 EVP_CIPHER_key_length(c))))) 532 { 533 error=1; 534 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_WRONG_NUMBER_OF_KEY_BITS); 535 } 536 if (error) 537 { 538 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 539 return(-1); 540 } 541#endif 542 543 if (is_export) 544 i = EVP_CIPHER_key_length(c); 545 546 if (i > SSL_MAX_MASTER_KEY_LENGTH) 547 { 548 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 549 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR); 550 return -1; 551 } 552 s->session->master_key_length=i; 553 memcpy(s->session->master_key,p,(unsigned int)i); 554 return(1); 555 } 556 557static int get_client_hello(SSL *s) 558 { 559 int i,n; 560 unsigned long len; 561 unsigned char *p; 562 STACK_OF(SSL_CIPHER) *cs; /* a stack of SSL_CIPHERS */ 563 STACK_OF(SSL_CIPHER) *cl; /* the ones we want to use */ 564 STACK_OF(SSL_CIPHER) *prio, *allow; 565 int z; 566 567 /* This is a bit of a hack to check for the correct packet 568 * type the first time round. */ 569 if (s->state == SSL2_ST_GET_CLIENT_HELLO_A) 570 { 571 s->first_packet=1; 572 s->state=SSL2_ST_GET_CLIENT_HELLO_B; 573 } 574 575 p=(unsigned char *)s->init_buf->data; 576 if (s->state == SSL2_ST_GET_CLIENT_HELLO_B) 577 { 578 i=ssl2_read(s,(char *)&(p[s->init_num]),9-s->init_num); 579 if (i < (9-s->init_num)) 580 return(ssl2_part_read(s,SSL_F_GET_CLIENT_HELLO,i)); 581 s->init_num = 9; 582 583 if (*(p++) != SSL2_MT_CLIENT_HELLO) 584 { 585 if (p[-1] != SSL2_MT_ERROR) 586 { 587 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 588 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_READ_WRONG_PACKET_TYPE); 589 } 590 else 591 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_PEER_ERROR); 592 return(-1); 593 } 594 n2s(p,i); 595 if (i < s->version) s->version=i; 596 n2s(p,i); s->s2->tmp.cipher_spec_length=i; 597 n2s(p,i); s->s2->tmp.session_id_length=i; 598 n2s(p,i); s->s2->challenge_length=i; 599 if ( (i < SSL2_MIN_CHALLENGE_LENGTH) || 600 (i > SSL2_MAX_CHALLENGE_LENGTH)) 601 { 602 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 603 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_INVALID_CHALLENGE_LENGTH); 604 return(-1); 605 } 606 s->state=SSL2_ST_GET_CLIENT_HELLO_C; 607 } 608 609 /* SSL2_ST_GET_CLIENT_HELLO_C */ 610 p=(unsigned char *)s->init_buf->data; 611 len = 9 + (unsigned long)s->s2->tmp.cipher_spec_length + (unsigned long)s->s2->challenge_length + (unsigned long)s->s2->tmp.session_id_length; 612 if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER) 613 { 614 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 615 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_MESSAGE_TOO_LONG); 616 return -1; 617 } 618 n = (int)len - s->init_num; 619 i = ssl2_read(s,(char *)&(p[s->init_num]),n); 620 if (i != n) return(ssl2_part_read(s,SSL_F_GET_CLIENT_HELLO,i)); 621 if (s->msg_callback) 622 s->msg_callback(0, s->version, 0, p, (size_t)len, s, s->msg_callback_arg); /* CLIENT-HELLO */ 623 p += 9; 624 625 /* get session-id before cipher stuff so we can get out session 626 * structure if it is cached */ 627 /* session-id */ 628 if ((s->s2->tmp.session_id_length != 0) && 629 (s->s2->tmp.session_id_length != SSL2_SSL_SESSION_ID_LENGTH)) 630 { 631 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 632 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_BAD_SSL_SESSION_ID_LENGTH); 633 return(-1); 634 } 635 636 if (s->s2->tmp.session_id_length == 0) 637 { 638 if (!ssl_get_new_session(s,1)) 639 { 640 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 641 return(-1); 642 } 643 } 644 else 645 { 646 i=ssl_get_prev_session(s,&(p[s->s2->tmp.cipher_spec_length]), 647 s->s2->tmp.session_id_length, NULL); 648 if (i == 1) 649 { /* previous session */ 650 s->hit=1; 651 } 652 else if (i == -1) 653 { 654 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 655 return(-1); 656 } 657 else 658 { 659 if (s->cert == NULL) 660 { 661 ssl2_return_error(s,SSL2_PE_NO_CERTIFICATE); 662 SSLerr(SSL_F_GET_CLIENT_HELLO,SSL_R_NO_CERTIFICATE_SET); 663 return(-1); 664 } 665 666 if (!ssl_get_new_session(s,1)) 667 { 668 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 669 return(-1); 670 } 671 } 672 } 673 674 if (!s->hit) 675 { 676 cs=ssl_bytes_to_cipher_list(s,p,s->s2->tmp.cipher_spec_length, 677 &s->session->ciphers); 678 if (cs == NULL) goto mem_err; 679 680 cl=SSL_get_ciphers(s); 681 682 if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE) 683 { 684 prio=sk_SSL_CIPHER_dup(cl); 685 if (prio == NULL) goto mem_err; 686 allow = cs; 687 } 688 else 689 { 690 prio = cs; 691 allow = cl; 692 } 693 /* Generate list of SSLv2 ciphers shared between client and server */ 694 for (z = 0; z < sk_SSL_CIPHER_num(prio); z++) 695 { 696 const SSL_CIPHER *cp = sk_SSL_CIPHER_value(prio, z); 697 if ((cp->algorithms & SSL_SSLV2) == 0 || 698 sk_SSL_CIPHER_find(allow, cp) < 0) 699 { 700 (void)sk_SSL_CIPHER_delete(prio,z); 701 z--; 702 } 703 } 704 if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE) 705 { 706 sk_SSL_CIPHER_free(s->session->ciphers); 707 s->session->ciphers = prio; 708 } 709 710 /* Make sure we have at least one cipher in common */ 711 if (sk_SSL_CIPHER_num(s->session->ciphers) == 0) 712 { 713 ssl2_return_error(s, SSL2_PE_NO_CIPHER); 714 SSLerr(SSL_F_GET_CLIENT_HELLO, SSL_R_NO_CIPHER_MATCH); 715 return -1; 716 } 717 /* s->session->ciphers should now have a list of 718 * ciphers that are on both the client and server. 719 * This list is ordered by the order the client sent 720 * the ciphers or in the order of the server's preference 721 * if SSL_OP_CIPHER_SERVER_PREFERENCE was set. 722 */ 723 } 724 p+=s->s2->tmp.cipher_spec_length; 725 /* done cipher selection */ 726 727 /* session id extracted already */ 728 p+=s->s2->tmp.session_id_length; 729 730 /* challenge */ 731 if (s->s2->challenge_length > sizeof s->s2->challenge) 732 { 733 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 734 SSLerr(SSL_F_GET_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); 735 return -1; 736 } 737 memcpy(s->s2->challenge,p,(unsigned int)s->s2->challenge_length); 738 return(1); 739mem_err: 740 SSLerr(SSL_F_GET_CLIENT_HELLO,ERR_R_MALLOC_FAILURE); 741 return(0); 742 } 743 744static int server_hello(SSL *s) 745 { 746 unsigned char *p,*d; 747 int n,hit; 748 749 p=(unsigned char *)s->init_buf->data; 750 if (s->state == SSL2_ST_SEND_SERVER_HELLO_A) 751 { 752 d=p+11; 753 *(p++)=SSL2_MT_SERVER_HELLO; /* type */ 754 hit=s->hit; 755 *(p++)=(unsigned char)hit; 756#if 1 757 if (!hit) 758 { 759 if (s->session->sess_cert != NULL) 760 /* This can't really happen because get_client_hello 761 * has called ssl_get_new_session, which does not set 762 * sess_cert. */ 763 ssl_sess_cert_free(s->session->sess_cert); 764 s->session->sess_cert = ssl_sess_cert_new(); 765 if (s->session->sess_cert == NULL) 766 { 767 SSLerr(SSL_F_SERVER_HELLO, ERR_R_MALLOC_FAILURE); 768 return(-1); 769 } 770 } 771 /* If 'hit' is set, then s->sess_cert may be non-NULL or NULL, 772 * depending on whether it survived in the internal cache 773 * or was retrieved from an external cache. 774 * If it is NULL, we cannot put any useful data in it anyway, 775 * so we don't touch it. 776 */ 777 778#else /* That's what used to be done when cert_st and sess_cert_st were 779 * the same. */ 780 if (!hit) 781 { /* else add cert to session */ 782 CRYPTO_add(&s->cert->references,1,CRYPTO_LOCK_SSL_CERT); 783 if (s->session->sess_cert != NULL) 784 ssl_cert_free(s->session->sess_cert); 785 s->session->sess_cert=s->cert; 786 } 787 else /* We have a session id-cache hit, if the 788 * session-id has no certificate listed against 789 * the 'cert' structure, grab the 'old' one 790 * listed against the SSL connection */ 791 { 792 if (s->session->sess_cert == NULL) 793 { 794 CRYPTO_add(&s->cert->references,1, 795 CRYPTO_LOCK_SSL_CERT); 796 s->session->sess_cert=s->cert; 797 } 798 } 799#endif 800 801 if (s->cert == NULL) 802 { 803 ssl2_return_error(s,SSL2_PE_NO_CERTIFICATE); 804 SSLerr(SSL_F_SERVER_HELLO,SSL_R_NO_CERTIFICATE_SPECIFIED); 805 return(-1); 806 } 807 808 if (hit) 809 { 810 *(p++)=0; /* no certificate type */ 811 s2n(s->version,p); /* version */ 812 s2n(0,p); /* cert len */ 813 s2n(0,p); /* ciphers len */ 814 } 815 else 816 { 817 /* EAY EAY */ 818 /* put certificate type */ 819 *(p++)=SSL2_CT_X509_CERTIFICATE; 820 s2n(s->version,p); /* version */ 821 n=i2d_X509(s->cert->pkeys[SSL_PKEY_RSA_ENC].x509,NULL); 822 s2n(n,p); /* certificate length */ 823 i2d_X509(s->cert->pkeys[SSL_PKEY_RSA_ENC].x509,&d); 824 n=0; 825 826 /* lets send out the ciphers we like in the 827 * prefered order */ 828 n=ssl_cipher_list_to_bytes(s,s->session->ciphers,d,0); 829 d+=n; 830 s2n(n,p); /* add cipher length */ 831 } 832 833 /* make and send conn_id */ 834 s2n(SSL2_CONNECTION_ID_LENGTH,p); /* add conn_id length */ 835 s->s2->conn_id_length=SSL2_CONNECTION_ID_LENGTH; 836 if (RAND_pseudo_bytes(s->s2->conn_id,(int)s->s2->conn_id_length) <= 0) 837 return -1; 838 memcpy(d,s->s2->conn_id,SSL2_CONNECTION_ID_LENGTH); 839 d+=SSL2_CONNECTION_ID_LENGTH; 840 841 s->state=SSL2_ST_SEND_SERVER_HELLO_B; 842 s->init_num=d-(unsigned char *)s->init_buf->data; 843 s->init_off=0; 844 } 845 /* SSL2_ST_SEND_SERVER_HELLO_B */ 846 /* If we are using TCP/IP, the performance is bad if we do 2 847 * writes without a read between them. This occurs when 848 * Session-id reuse is used, so I will put in a buffering module 849 */ 850 if (s->hit) 851 { 852 if (!ssl_init_wbio_buffer(s,1)) return(-1); 853 } 854 855 return(ssl2_do_write(s)); 856 } 857 858static int get_client_finished(SSL *s) 859 { 860 unsigned char *p; 861 int i, n; 862 unsigned long len; 863 864 p=(unsigned char *)s->init_buf->data; 865 if (s->state == SSL2_ST_GET_CLIENT_FINISHED_A) 866 { 867 i=ssl2_read(s,(char *)&(p[s->init_num]),1-s->init_num); 868 if (i < 1-s->init_num) 869 return(ssl2_part_read(s,SSL_F_GET_CLIENT_FINISHED,i)); 870 s->init_num += i; 871 872 if (*p != SSL2_MT_CLIENT_FINISHED) 873 { 874 if (*p != SSL2_MT_ERROR) 875 { 876 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 877 SSLerr(SSL_F_GET_CLIENT_FINISHED,SSL_R_READ_WRONG_PACKET_TYPE); 878 } 879 else 880 { 881 SSLerr(SSL_F_GET_CLIENT_FINISHED,SSL_R_PEER_ERROR); 882 /* try to read the error message */ 883 i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num); 884 return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i); 885 } 886 return(-1); 887 } 888 s->state=SSL2_ST_GET_CLIENT_FINISHED_B; 889 } 890 891 /* SSL2_ST_GET_CLIENT_FINISHED_B */ 892 if (s->s2->conn_id_length > sizeof s->s2->conn_id) 893 { 894 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 895 SSLerr(SSL_F_GET_CLIENT_FINISHED, ERR_R_INTERNAL_ERROR); 896 return -1; 897 } 898 len = 1 + (unsigned long)s->s2->conn_id_length; 899 n = (int)len - s->init_num; 900 i = ssl2_read(s,(char *)&(p[s->init_num]),n); 901 if (i < n) 902 { 903 return(ssl2_part_read(s,SSL_F_GET_CLIENT_FINISHED,i)); 904 } 905 if (s->msg_callback) 906 s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); /* CLIENT-FINISHED */ 907 p += 1; 908 if (memcmp(p,s->s2->conn_id,s->s2->conn_id_length) != 0) 909 { 910 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 911 SSLerr(SSL_F_GET_CLIENT_FINISHED,SSL_R_CONNECTION_ID_IS_DIFFERENT); 912 return(-1); 913 } 914 return(1); 915 } 916 917static int server_verify(SSL *s) 918 { 919 unsigned char *p; 920 921 if (s->state == SSL2_ST_SEND_SERVER_VERIFY_A) 922 { 923 p=(unsigned char *)s->init_buf->data; 924 *(p++)=SSL2_MT_SERVER_VERIFY; 925 if (s->s2->challenge_length > sizeof s->s2->challenge) 926 { 927 SSLerr(SSL_F_SERVER_VERIFY, ERR_R_INTERNAL_ERROR); 928 return -1; 929 } 930 memcpy(p,s->s2->challenge,(unsigned int)s->s2->challenge_length); 931 /* p+=s->s2->challenge_length; */ 932 933 s->state=SSL2_ST_SEND_SERVER_VERIFY_B; 934 s->init_num=s->s2->challenge_length+1; 935 s->init_off=0; 936 } 937 return(ssl2_do_write(s)); 938 } 939 940static int server_finish(SSL *s) 941 { 942 unsigned char *p; 943 944 if (s->state == SSL2_ST_SEND_SERVER_FINISHED_A) 945 { 946 p=(unsigned char *)s->init_buf->data; 947 *(p++)=SSL2_MT_SERVER_FINISHED; 948 949 if (s->session->session_id_length > sizeof s->session->session_id) 950 { 951 SSLerr(SSL_F_SERVER_FINISH, ERR_R_INTERNAL_ERROR); 952 return -1; 953 } 954 memcpy(p,s->session->session_id, (unsigned int)s->session->session_id_length); 955 /* p+=s->session->session_id_length; */ 956 957 s->state=SSL2_ST_SEND_SERVER_FINISHED_B; 958 s->init_num=s->session->session_id_length+1; 959 s->init_off=0; 960 } 961 962 /* SSL2_ST_SEND_SERVER_FINISHED_B */ 963 return(ssl2_do_write(s)); 964 } 965 966/* send the request and check the response */ 967static int request_certificate(SSL *s) 968 { 969 const unsigned char *cp; 970 unsigned char *p,*p2,*buf2; 971 unsigned char *ccd; 972 int i,j,ctype,ret= -1; 973 unsigned long len; 974 X509 *x509=NULL; 975 STACK_OF(X509) *sk=NULL; 976 977 ccd=s->s2->tmp.ccl; 978 if (s->state == SSL2_ST_SEND_REQUEST_CERTIFICATE_A) 979 { 980 p=(unsigned char *)s->init_buf->data; 981 *(p++)=SSL2_MT_REQUEST_CERTIFICATE; 982 *(p++)=SSL2_AT_MD5_WITH_RSA_ENCRYPTION; 983 if (RAND_pseudo_bytes(ccd,SSL2_MIN_CERT_CHALLENGE_LENGTH) <= 0) 984 return -1; 985 memcpy(p,ccd,SSL2_MIN_CERT_CHALLENGE_LENGTH); 986 987 s->state=SSL2_ST_SEND_REQUEST_CERTIFICATE_B; 988 s->init_num=SSL2_MIN_CERT_CHALLENGE_LENGTH+2; 989 s->init_off=0; 990 } 991 992 if (s->state == SSL2_ST_SEND_REQUEST_CERTIFICATE_B) 993 { 994 i=ssl2_do_write(s); 995 if (i <= 0) 996 { 997 ret=i; 998 goto end; 999 } 1000 1001 s->init_num=0; 1002 s->state=SSL2_ST_SEND_REQUEST_CERTIFICATE_C; 1003 } 1004 1005 if (s->state == SSL2_ST_SEND_REQUEST_CERTIFICATE_C) 1006 { 1007 p=(unsigned char *)s->init_buf->data; 1008 i=ssl2_read(s,(char *)&(p[s->init_num]),6-s->init_num); /* try to read 6 octets ... */ 1009 if (i < 3-s->init_num) /* ... but don't call ssl2_part_read now if we got at least 3 1010 * (probably NO-CERTIFICATE-ERROR) */ 1011 { 1012 ret=ssl2_part_read(s,SSL_F_REQUEST_CERTIFICATE,i); 1013 goto end; 1014 } 1015 s->init_num += i; 1016 1017 if ((s->init_num >= 3) && (p[0] == SSL2_MT_ERROR)) 1018 { 1019 n2s(p,i); 1020 if (i != SSL2_PE_NO_CERTIFICATE) 1021 { 1022 /* not the error message we expected -- let ssl2_part_read handle it */ 1023 s->init_num -= 3; 1024 ret = ssl2_part_read(s,SSL_F_REQUEST_CERTIFICATE, 3); 1025 goto end; 1026 } 1027 1028 if (s->msg_callback) 1029 s->msg_callback(0, s->version, 0, p, 3, s, s->msg_callback_arg); /* ERROR */ 1030 1031 /* this is the one place where we can recover from an SSL 2.0 error */ 1032 1033 if (s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT) 1034 { 1035 ssl2_return_error(s,SSL2_PE_BAD_CERTIFICATE); 1036 SSLerr(SSL_F_REQUEST_CERTIFICATE,SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE); 1037 goto end; 1038 } 1039 ret=1; 1040 goto end; 1041 } 1042 if ((*(p++) != SSL2_MT_CLIENT_CERTIFICATE) || (s->init_num < 6)) 1043 { 1044 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR); 1045 SSLerr(SSL_F_REQUEST_CERTIFICATE,SSL_R_SHORT_READ); 1046 goto end; 1047 } 1048 if (s->init_num != 6) 1049 { 1050 SSLerr(SSL_F_REQUEST_CERTIFICATE, ERR_R_INTERNAL_ERROR); 1051 goto end; 1052 } 1053 1054 /* ok we have a response */ 1055 /* certificate type, there is only one right now. */ 1056 ctype= *(p++); 1057 if (ctype != SSL2_AT_MD5_WITH_RSA_ENCRYPTION) 1058 { 1059 ssl2_return_error(s,SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE); 1060 SSLerr(SSL_F_REQUEST_CERTIFICATE,SSL_R_BAD_RESPONSE_ARGUMENT); 1061 goto end; 1062 } 1063 n2s(p,i); s->s2->tmp.clen=i; 1064 n2s(p,i); s->s2->tmp.rlen=i; 1065 s->state=SSL2_ST_SEND_REQUEST_CERTIFICATE_D; 1066 } 1067 1068 /* SSL2_ST_SEND_REQUEST_CERTIFICATE_D */ 1069 p=(unsigned char *)s->init_buf->data; 1070 len = 6 + (unsigned long)s->s2->tmp.clen + (unsigned long)s->s2->tmp.rlen; 1071 if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER) 1072 { 1073 SSLerr(SSL_F_REQUEST_CERTIFICATE,SSL_R_MESSAGE_TOO_LONG); 1074 goto end; 1075 } 1076 j = (int)len - s->init_num; 1077 i = ssl2_read(s,(char *)&(p[s->init_num]),j); 1078 if (i < j) 1079 { 1080 ret=ssl2_part_read(s,SSL_F_REQUEST_CERTIFICATE,i); 1081 goto end; 1082 } 1083 if (s->msg_callback) 1084 s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); /* CLIENT-CERTIFICATE */ 1085 p += 6; 1086 1087 cp = p; 1088 x509=(X509 *)d2i_X509(NULL,&cp,(long)s->s2->tmp.clen); 1089 if (x509 == NULL) 1090 { 1091 SSLerr(SSL_F_REQUEST_CERTIFICATE,ERR_R_X509_LIB); 1092 goto msg_end; 1093 } 1094 1095 if (((sk=sk_X509_new_null()) == NULL) || (!sk_X509_push(sk,x509))) 1096 { 1097 SSLerr(SSL_F_REQUEST_CERTIFICATE,ERR_R_MALLOC_FAILURE); 1098 goto msg_end; 1099 } 1100 1101 i=ssl_verify_cert_chain(s,sk); 1102 1103 if (i > 0) /* we like the packet, now check the chksum */ 1104 { 1105 EVP_MD_CTX ctx; 1106 EVP_PKEY *pkey=NULL; 1107 1108 EVP_MD_CTX_init(&ctx); 1109 EVP_VerifyInit_ex(&ctx,s->ctx->rsa_md5, NULL); 1110 EVP_VerifyUpdate(&ctx,s->s2->key_material, 1111 s->s2->key_material_length); 1112 EVP_VerifyUpdate(&ctx,ccd,SSL2_MIN_CERT_CHALLENGE_LENGTH); 1113 1114 i=i2d_X509(s->cert->pkeys[SSL_PKEY_RSA_ENC].x509,NULL); 1115 buf2=OPENSSL_malloc((unsigned int)i); 1116 if (buf2 == NULL) 1117 { 1118 SSLerr(SSL_F_REQUEST_CERTIFICATE,ERR_R_MALLOC_FAILURE); 1119 goto msg_end; 1120 } 1121 p2=buf2; 1122 i=i2d_X509(s->cert->pkeys[SSL_PKEY_RSA_ENC].x509,&p2); 1123 EVP_VerifyUpdate(&ctx,buf2,(unsigned int)i); 1124 OPENSSL_free(buf2); 1125 1126 pkey=X509_get_pubkey(x509); 1127 if (pkey == NULL) goto end; 1128 i=EVP_VerifyFinal(&ctx,cp,s->s2->tmp.rlen,pkey); 1129 EVP_PKEY_free(pkey); 1130 EVP_MD_CTX_cleanup(&ctx); 1131 1132 if (i > 0) 1133 { 1134 if (s->session->peer != NULL) 1135 X509_free(s->session->peer); 1136 s->session->peer=x509; 1137 CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509); 1138 s->session->verify_result = s->verify_result; 1139 ret=1; 1140 goto end; 1141 } 1142 else 1143 { 1144 SSLerr(SSL_F_REQUEST_CERTIFICATE,SSL_R_BAD_CHECKSUM); 1145 goto msg_end; 1146 } 1147 } 1148 else 1149 { 1150msg_end: 1151 ssl2_return_error(s,SSL2_PE_BAD_CERTIFICATE); 1152 } 1153end: 1154 sk_X509_free(sk); 1155 X509_free(x509); 1156 return(ret); 1157 } 1158 1159static int ssl_rsa_private_decrypt(CERT *c, int len, unsigned char *from, 1160 unsigned char *to, int padding) 1161 { 1162 RSA *rsa; 1163 int i; 1164 1165 if ((c == NULL) || (c->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL)) 1166 { 1167 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT,SSL_R_NO_PRIVATEKEY); 1168 return(-1); 1169 } 1170 if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey->type != EVP_PKEY_RSA) 1171 { 1172 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT,SSL_R_PUBLIC_KEY_IS_NOT_RSA); 1173 return(-1); 1174 } 1175 rsa=c->pkeys[SSL_PKEY_RSA_ENC].privatekey->pkey.rsa; 1176 1177 /* we have the public key */ 1178 i=RSA_private_decrypt(len,from,to,rsa,padding); 1179 if (i < 0) 1180 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT,ERR_R_RSA_LIB); 1181 return(i); 1182 } 1183#else /* !OPENSSL_NO_SSL2 */ 1184 1185# if PEDANTIC 1186static void *dummy=&dummy; 1187# endif 1188 1189#endif 1190