ssl/s2_clnt.c

   1 /* ssl/s2_clnt.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/rand.h>
 116 #include <openssl/buffer.h>
 117 #include <openssl/objects.h>
 118 #include <openssl/evp.h>
 119 #include "cryptlib.h"
 120
 121 static SSL_METHOD *ssl2_get_client_method(int ver);
 122 static int get_server_finished(SSL *s);
 123 static int get_server_verify(SSL *s);
 124 static int get_server_hello(SSL *s);
 125 static int client_hello(SSL *s);
 126 static int client_master_key(SSL *s);
 127 static int client_finished(SSL *s);
 128 static int client_certificate(SSL *s);
 129 static int ssl_rsa_public_encrypt(SESS_CERT *sc, int len, unsigned char *from,
 130         unsigned char *to,int padding);
 131 #define BREAK   break
 132
 133 static SSL_METHOD *ssl2_get_client_method(int ver)
 134         {
 135         if (ver == SSL2_VERSION)
 136                 return(SSLv2_client_method());
 137         else
 138                 return(NULL);
 139         }
 140
 141 SSL_METHOD *SSLv2_client_method(void)
 142         {
 143         static int init=1;
 144         static SSL_METHOD SSLv2_client_data;
 145
 146         if (init)
 147                 {
 148                 CRYPTO_w_lock(CRYPTO_LOCK_SSL_METHOD);
 149
 150                 if (init)
 151                         {
 152                         memcpy((char *)&SSLv2_client_data,(char *)sslv2_base_method(),
 153                                 sizeof(SSL_METHOD));
 154                         SSLv2_client_data.ssl_connect=ssl2_connect;
 155                         SSLv2_client_data.get_ssl_method=ssl2_get_client_method;
 156                         init=0;
 157                         }
 158
 159                 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_METHOD);
 160                 }
 161         return(&SSLv2_client_data);
 162         }
 163
 164 int ssl2_connect(SSL *s)
 165         {
 166         unsigned long l=time(NULL);
 167         BUF_MEM *buf=NULL;
 168         int ret= -1;
 169         void (*cb)(const SSL *ssl,int type,int val)=NULL;
 170         int new_state,state;
 171
 172         RAND_add(&l,sizeof(l),0);
 173         ERR_clear_error();
 174         clear_sys_error();
 175
 176         if (s->info_callback != NULL)
 177                 cb=s->info_callback;
 178         else if (s->ctx->info_callback != NULL)
 179                 cb=s->ctx->info_callback;
 180
 181         /* init things to blank */
 182         s->in_handshake++;
 183         if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
 184
 185         for (;;)
 186                 {
 187                 state=s->state;
 188
 189                 switch (s->state)
 190                         {
 191                 case SSL_ST_BEFORE:
 192                 case SSL_ST_CONNECT:
 193                 case SSL_ST_BEFORE|SSL_ST_CONNECT:
 194                 case SSL_ST_OK|SSL_ST_CONNECT:
 195
 196                         s->server=0;
 197                         if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
 198
 199                         s->version=SSL2_VERSION;
 200                         s->type=SSL_ST_CONNECT;
 201
 202                         buf=s->init_buf;
 203                         if ((buf == NULL) && ((buf=BUF_MEM_new()) == NULL))
 204                                 {
 205                                 ret= -1;
 206                                 goto end;
 207                                 }
 208                         if (!BUF_MEM_grow(buf,
 209                                 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER))
 210                                 {
 211                                 if (buf == s->init_buf)
 212                                         buf=NULL;
 213                                 ret= -1;
 214                                 goto end;
 215                                 }
 216                         s->init_buf=buf;
 217                         buf=NULL;
 218                         s->init_num=0;
 219                         s->state=SSL2_ST_SEND_CLIENT_HELLO_A;
 220                         s->ctx->stats.sess_connect++;
 221                         s->handshake_func=ssl2_connect;
 222                         BREAK;
 223
 224                 case SSL2_ST_SEND_CLIENT_HELLO_A:
 225                 case SSL2_ST_SEND_CLIENT_HELLO_B:
 226                         s->shutdown=0;
 227                         ret=client_hello(s);
 228                         if (ret <= 0) goto end;
 229                         s->init_num=0;
 230                         s->state=SSL2_ST_GET_SERVER_HELLO_A;
 231                         BREAK;
 232
 233                 case SSL2_ST_GET_SERVER_HELLO_A:
 234                 case SSL2_ST_GET_SERVER_HELLO_B:
 235                         ret=get_server_hello(s);
 236                         if (ret <= 0) goto end;
 237                         s->init_num=0;
 238                         if (!s->hit) /* new session */
 239                                 {
 240                                 s->state=SSL2_ST_SEND_CLIENT_MASTER_KEY_A;
 241                                 BREAK;
 242                                 }
 243                         else
 244                                 {
 245                                 s->state=SSL2_ST_CLIENT_START_ENCRYPTION;
 246                                 break;
 247                                 }
 248
 249                 case SSL2_ST_SEND_CLIENT_MASTER_KEY_A:
 250                 case SSL2_ST_SEND_CLIENT_MASTER_KEY_B:
 251                         ret=client_master_key(s);
 252                         if (ret <= 0) goto end;
 253                         s->init_num=0;
 254                         s->state=SSL2_ST_CLIENT_START_ENCRYPTION;
 255                         break;
 256
 257                 case SSL2_ST_CLIENT_START_ENCRYPTION:
 258                         /* Ok, we now have all the stuff needed to
 259                          * start encrypting, so lets fire it up :-) */
 260                         if (!ssl2_enc_init(s,1))
 261                                 {
 262                                 ret= -1;
 263                                 goto end;
 264                                 }
 265                         s->s2->clear_text=0;
 266                         s->state=SSL2_ST_SEND_CLIENT_FINISHED_A;
 267                         break;
 268
 269                 case SSL2_ST_SEND_CLIENT_FINISHED_A:
 270                 case SSL2_ST_SEND_CLIENT_FINISHED_B:
 271                         ret=client_finished(s);
 272                         if (ret <= 0) goto end;
 273                         s->init_num=0;
 274                         s->state=SSL2_ST_GET_SERVER_VERIFY_A;
 275                         break;
 276
 277                 case SSL2_ST_GET_SERVER_VERIFY_A:
 278                 case SSL2_ST_GET_SERVER_VERIFY_B:
 279                         ret=get_server_verify(s);
 280                         if (ret <= 0) goto end;
 281                         s->init_num=0;
 282                         s->state=SSL2_ST_GET_SERVER_FINISHED_A;
 283                         break;
 284
 285                 case SSL2_ST_GET_SERVER_FINISHED_A:
 286                 case SSL2_ST_GET_SERVER_FINISHED_B:
 287                         ret=get_server_finished(s);
 288                         if (ret <= 0) goto end;
 289                         break;
 290
 291                 case SSL2_ST_SEND_CLIENT_CERTIFICATE_A:
 292                 case SSL2_ST_SEND_CLIENT_CERTIFICATE_B:
 293                 case SSL2_ST_SEND_CLIENT_CERTIFICATE_C:
 294                 case SSL2_ST_SEND_CLIENT_CERTIFICATE_D:
 295                 case SSL2_ST_X509_GET_CLIENT_CERTIFICATE:
 296                         ret=client_certificate(s);
 297                         if (ret <= 0) goto end;
 298                         s->init_num=0;
 299                         s->state=SSL2_ST_GET_SERVER_FINISHED_A;
 300                         break;
 301
 302                 case SSL_ST_OK:
 303                         if (s->init_buf != NULL)
 304                                 {
 305                                 BUF_MEM_free(s->init_buf);
 306                                 s->init_buf=NULL;
 307                                 }
 308                         s->init_num=0;
 309                 /*      ERR_clear_error();*/
 310
 311                         /* If we want to cache session-ids in the client
 312                          * and we successfully add the session-id to the
 313                          * cache, and there is a callback, then pass it out.
 314                          * 26/11/96 - eay - only add if not a re-used session.
 315                          */
 316
 317                         ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
 318                         if (s->hit) s->ctx->stats.sess_hit++;
 319
 320                         ret=1;
 321                         /* s->server=0; */
 322                         s->ctx->stats.sess_connect_good++;
 323
 324                         if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
 325
 326                         goto end;
 327                         /* break; */
 328                 default:
 329                         SSLerr(SSL_F_SSL2_CONNECT,SSL_R_UNKNOWN_STATE);
 330                         return(-1);
 331                         /* break; */
 332                         }
 333
 334                 if ((cb != NULL) && (s->state != state))
 335                         {
 336                         new_state=s->state;
 337                         s->state=state;
 338                         cb(s,SSL_CB_CONNECT_LOOP,1);
 339                         s->state=new_state;
 340                         }
 341                 }
 342 end:
 343         s->in_handshake--;
 344         if (buf != NULL)
 345                 BUF_MEM_free(buf);
 346         if (cb != NULL)
 347                 cb(s,SSL_CB_CONNECT_EXIT,ret);
 348         return(ret);
 349         }
 350
 351 static int get_server_hello(SSL *s)
 352         {
 353         unsigned char *buf;
 354         unsigned char *p;
 355         int i,j;
 356         unsigned long len;
 357         STACK_OF(SSL_CIPHER) *sk=NULL,*cl, *prio, *allow;
 358
 359         buf=(unsigned char *)s->init_buf->data;
 360         p=buf;
 361         if (s->state == SSL2_ST_GET_SERVER_HELLO_A)
 362                 {
 363                 i=ssl2_read(s,(char *)&(buf[s->init_num]),11-s->init_num);
 364                 if (i < (11-s->init_num))
 365                         return(ssl2_part_read(s,SSL_F_GET_SERVER_HELLO,i));
 366                 s->init_num = 11;
 367
 368                 if (*(p++) != SSL2_MT_SERVER_HELLO)
 369                         {
 370                         if (p[-1] != SSL2_MT_ERROR)
 371                                 {
 372                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 373                                 SSLerr(SSL_F_GET_SERVER_HELLO,
 374                                         SSL_R_READ_WRONG_PACKET_TYPE);
 375                                 }
 376                         else
 377                                 SSLerr(SSL_F_GET_SERVER_HELLO,
 378                                         SSL_R_PEER_ERROR);
 379                         return(-1);
 380                         }
 381 #ifdef __APPLE_CC__
 382                 /* The Rhapsody 5.5 (a.k.a. MacOS X) compiler bug
 383                  * workaround. <appro@fy.chalmers.se> */
 384                 s->hit=(i=*(p++))?1:0;
 385 #else
 386                 s->hit=(*(p++))?1:0;
 387 #endif
 388                 s->s2->tmp.cert_type= *(p++);
 389                 n2s(p,i);
 390                 if (i < s->version) s->version=i;
 391                 n2s(p,i); s->s2->tmp.cert_length=i;
 392                 n2s(p,i); s->s2->tmp.csl=i;
 393                 n2s(p,i); s->s2->tmp.conn_id_length=i;
 394                 s->state=SSL2_ST_GET_SERVER_HELLO_B;
 395                 }
 396
 397         /* SSL2_ST_GET_SERVER_HELLO_B */
 398         len = 11 + (unsigned long)s->s2->tmp.cert_length + (unsigned long)s->s2->tmp.csl + (unsigned long)s->s2->tmp.conn_id_length;
 399         if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)
 400                 {
 401                 SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_MESSAGE_TOO_LONG);
 402                 return -1;
 403                 }
 404         j = (int)len - s->init_num;
 405         i = ssl2_read(s,(char *)&(buf[s->init_num]),j);
 406         if (i != j) return(ssl2_part_read(s,SSL_F_GET_SERVER_HELLO,i));
 407         if (s->msg_callback)
 408                 s->msg_callback(0, s->version, 0, buf, (size_t)len, s, s->msg_callback_arg); /* SERVER-HELLO */
 409
 410         /* things are looking good */
 411
 412         p = buf + 11;
 413         if (s->hit)
 414                 {
 415                 if (s->s2->tmp.cert_length != 0)
 416                         {
 417                         SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CERT_LENGTH_NOT_ZERO);
 418                         return(-1);
 419                         }
 420                 if (s->s2->tmp.cert_type != 0)
 421                         {
 422                         if (!(s->options &
 423                                 SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG))
 424                                 {
 425                                 SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CERT_TYPE_NOT_ZERO);
 426                                 return(-1);
 427                                 }
 428                         }
 429                 if (s->s2->tmp.csl != 0)
 430                         {
 431                         SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CIPHER_LIST_NOT_ZERO);
 432                         return(-1);
 433                         }
 434                 }
 435         else
 436                 {
 437 #ifdef undef
 438                 /* very bad */
 439                 memset(s->session->session_id,0,
 440                         SSL_MAX_SSL_SESSION_ID_LENGTH_IN_BYTES);
 441                 s->session->session_id_length=0;
 442                 */
 443 #endif
 444
 445                 /* we need to do this in case we were trying to reuse a
 446                  * client session but others are already reusing it.
 447                  * If this was a new 'blank' session ID, the session-id
 448                  * length will still be 0 */
 449                 if (s->session->session_id_length > 0)
 450                         {
 451                         if (!ssl_get_new_session(s,0))
 452                                 {
 453                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 454                                 return(-1);
 455                                 }
 456                         }
 457
 458                 if (ssl2_set_certificate(s,s->s2->tmp.cert_type,
 459                         s->s2->tmp.cert_length,p) <= 0)
 460                         {
 461                         ssl2_return_error(s,SSL2_PE_BAD_CERTIFICATE);
 462                         return(-1);
 463                         }
 464                 p+=s->s2->tmp.cert_length;
 465
 466                 if (s->s2->tmp.csl == 0)
 467                         {
 468                         ssl2_return_error(s,SSL2_PE_NO_CIPHER);
 469                         SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_NO_CIPHER_LIST);
 470                         return(-1);
 471                         }
 472
 473                 /* We have just received a list of ciphers back from the
 474                  * server.  We need to get the ones that match, then select
 475                  * the one we want the most :-). */
 476
 477                 /* load the ciphers */
 478                 sk=ssl_bytes_to_cipher_list(s,p,s->s2->tmp.csl,
 479                                             &s->session->ciphers);
 480                 p+=s->s2->tmp.csl;
 481                 if (sk == NULL)
 482                         {
 483                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 484                         SSLerr(SSL_F_GET_SERVER_HELLO,ERR_R_MALLOC_FAILURE);
 485                         return(-1);
 486                         }
 487
 488                 sk_SSL_CIPHER_set_cmp_func(sk,ssl_cipher_ptr_id_cmp);
 489
 490                 /* get the array of ciphers we will accept */
 491                 cl=SSL_get_ciphers(s);
 492                 sk_SSL_CIPHER_set_cmp_func(cl,ssl_cipher_ptr_id_cmp);
 493
 494                 /*
 495                  * If server preference flag set, choose the first
 496                  * (highest priority) cipher the server sends, otherwise
 497                  * client preference has priority.
 498                  */
 499                 if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE)
 500                     {
 501                     prio = sk;
 502                     allow = cl;
 503                     }
 504                 else
 505                     {
 506                     prio = cl;
 507                     allow = sk;
 508                     }
 509                 /* In theory we could have ciphers sent back that we
 510                  * don't want to use but that does not matter since we
 511                  * will check against the list we originally sent and
 512                  * for performance reasons we should not bother to match
 513                  * the two lists up just to check. */
 514                 for (i=0; i<sk_SSL_CIPHER_num(prio); i++)
 515                         {
 516                         if (sk_SSL_CIPHER_find(allow,
 517                                              sk_SSL_CIPHER_value(prio,i)) >= 0)
 518                                 break;
 519                         }
 520
 521                 if (i >= sk_SSL_CIPHER_num(prio))
 522                         {
 523                         ssl2_return_error(s,SSL2_PE_NO_CIPHER);
 524                         SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_NO_CIPHER_MATCH);
 525                         return(-1);
 526                         }
 527                 s->session->cipher=sk_SSL_CIPHER_value(prio,i);
 528
 529
 530                 if (s->session->peer != NULL) /* can't happen*/
 531                         {
 532                         ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 533                         SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
 534                         return(-1);
 535                         }
 536
 537                 s->session->peer = s->session->sess_cert->peer_key->x509;
 538                 /* peer_key->x509 has been set by ssl2_set_certificate. */
 539                 CRYPTO_add(&s->session->peer->references, 1, CRYPTO_LOCK_X509);
 540                 }
 541
 542         if (s->session->peer != s->session->sess_cert->peer_key->x509)
 543                 /* can't happen */
 544                 {
 545                 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 546                 SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
 547                 return(-1);
 548                 }
 549
 550         s->s2->conn_id_length=s->s2->tmp.conn_id_length;
 551         if (s->s2->conn_id_length > sizeof s->s2->conn_id)
 552                 {
 553                 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 554                 SSLerr(SSL_F_GET_SERVER_HELLO, SSL_R_SSL2_CONNECTION_ID_TOO_LONG);
 555                 return -1;
 556                 }
 557         memcpy(s->s2->conn_id,p,s->s2->tmp.conn_id_length);
 558         return(1);
 559         }
 560
 561 static int client_hello(SSL *s)
 562         {
 563         unsigned char *buf;
 564         unsigned char *p,*d;
 565 /*      CIPHER **cipher;*/
 566         int i,n,j;
 567
 568         buf=(unsigned char *)s->init_buf->data;
 569         if (s->state == SSL2_ST_SEND_CLIENT_HELLO_A)
 570                 {
 571                 if ((s->session == NULL) ||
 572                         (s->session->ssl_version != s->version))
 573                         {
 574                         if (!ssl_get_new_session(s,0))
 575                                 {
 576                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 577                                 return(-1);
 578                                 }
 579                         }
 580                 /* else use the pre-loaded session */
 581
 582                 p=buf;                                  /* header */
 583                 d=p+9;                                  /* data section */
 584                 *(p++)=SSL2_MT_CLIENT_HELLO;            /* type */
 585                 s2n(SSL2_VERSION,p);                    /* version */
 586                 n=j=0;
 587
 588                 n=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),d);
 589                 d+=n;
 590
 591                 if (n == 0)
 592                         {
 593                         SSLerr(SSL_F_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
 594                         return(-1);
 595                         }
 596
 597                 s2n(n,p);                       /* cipher spec num bytes */
 598
 599                 if ((s->session->session_id_length > 0) &&
 600                         (s->session->session_id_length <=
 601                         SSL2_MAX_SSL_SESSION_ID_LENGTH))
 602                         {
 603                         i=s->session->session_id_length;
 604                         s2n(i,p);               /* session id length */
 605                         memcpy(d,s->session->session_id,(unsigned int)i);
 606                         d+=i;
 607                         }
 608                 else
 609                         {
 610                         s2n(0,p);
 611                         }
 612
 613                 s->s2->challenge_length=SSL2_CHALLENGE_LENGTH;
 614                 s2n(SSL2_CHALLENGE_LENGTH,p);           /* challenge length */
 615                 /*challenge id data*/
 616                 RAND_pseudo_bytes(s->s2->challenge,SSL2_CHALLENGE_LENGTH);
 617                 memcpy(d,s->s2->challenge,SSL2_CHALLENGE_LENGTH);
 618                 d+=SSL2_CHALLENGE_LENGTH;
 619
 620                 s->state=SSL2_ST_SEND_CLIENT_HELLO_B;
 621                 s->init_num=d-buf;
 622                 s->init_off=0;
 623                 }
 624         /* SSL2_ST_SEND_CLIENT_HELLO_B */
 625         return(ssl2_do_write(s));
 626         }
 627
 628 static int client_master_key(SSL *s)
 629         {
 630         unsigned char *buf;
 631         unsigned char *p,*d;
 632         int clear,enc,karg,i;
 633         SSL_SESSION *sess;
 634         const EVP_CIPHER *c;
 635         const EVP_MD *md;
 636
 637         buf=(unsigned char *)s->init_buf->data;
 638         if (s->state == SSL2_ST_SEND_CLIENT_MASTER_KEY_A)
 639                 {
 640
 641                 if (!ssl_cipher_get_evp(s->session,&c,&md,NULL))
 642                         {
 643                         ssl2_return_error(s,SSL2_PE_NO_CIPHER);
 644                         SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS);
 645                         return(-1);
 646                         }
 647                 sess=s->session;
 648                 p=buf;
 649                 d=p+10;
 650                 *(p++)=SSL2_MT_CLIENT_MASTER_KEY;/* type */
 651
 652                 i=ssl_put_cipher_by_char(s,sess->cipher,p);
 653                 p+=i;
 654
 655                 /* make key_arg data */
 656                 i=EVP_CIPHER_iv_length(c);
 657                 sess->key_arg_length=i;
 658                 if (i > SSL_MAX_KEY_ARG_LENGTH)
 659                         {
 660                         ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 661                         SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
 662                         return -1;
 663                         }
 664                 if (i > 0) RAND_pseudo_bytes(sess->key_arg,i);
 665
 666                 /* make a master key */
 667                 i=EVP_CIPHER_key_length(c);
 668                 sess->master_key_length=i;
 669                 if (i > 0)
 670                         {
 671                         if (i > sizeof sess->master_key)
 672                                 {
 673                                 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 674                                 SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
 675                                 return -1;
 676                                 }
 677                         if (RAND_bytes(sess->master_key,i) <= 0)
 678                                 {
 679                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 680                                 return(-1);
 681                                 }
 682                         }
 683
 684                 if (sess->cipher->algorithm2 & SSL2_CF_8_BYTE_ENC)
 685                         enc=8;
 686                 else if (SSL_C_IS_EXPORT(sess->cipher))
 687                         enc=5;
 688                 else
 689                         enc=i;
 690
 691                 if (i < enc)
 692                         {
 693                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 694                         SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_CIPHER_TABLE_SRC_ERROR);
 695                         return(-1);
 696                         }
 697                 clear=i-enc;
 698                 s2n(clear,p);
 699                 memcpy(d,sess->master_key,(unsigned int)clear);
 700                 d+=clear;
 701
 702                 enc=ssl_rsa_public_encrypt(sess->sess_cert,enc,
 703                         &(sess->master_key[clear]),d,
 704                         (s->s2->ssl2_rollback)?RSA_SSLV23_PADDING:RSA_PKCS1_PADDING);
 705                 if (enc <= 0)
 706                         {
 707                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 708                         SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PUBLIC_KEY_ENCRYPT_ERROR);
 709                         return(-1);
 710                         }
 711 #ifdef PKCS1_CHECK
 712                 if (s->options & SSL_OP_PKCS1_CHECK_1) d[1]++;
 713                 if (s->options & SSL_OP_PKCS1_CHECK_2)
 714                         sess->master_key[clear]++;
 715 #endif
 716                 s2n(enc,p);
 717                 d+=enc;
 718                 karg=sess->key_arg_length;
 719                 s2n(karg,p); /* key arg size */
 720                 if (karg > sizeof sess->key_arg)
 721                         {
 722                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 723                         SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
 724                         return -1;
 725                         }
 726                 memcpy(d,sess->key_arg,(unsigned int)karg);
 727                 d+=karg;
 728
 729                 s->state=SSL2_ST_SEND_CLIENT_MASTER_KEY_B;
 730                 s->init_num=d-buf;
 731                 s->init_off=0;
 732                 }
 733
 734         /* SSL2_ST_SEND_CLIENT_MASTER_KEY_B */
 735         return(ssl2_do_write(s));
 736         }
 737
 738 static int client_finished(SSL *s)
 739         {
 740         unsigned char *p;
 741
 742         if (s->state == SSL2_ST_SEND_CLIENT_FINISHED_A)
 743                 {
 744                 p=(unsigned char *)s->init_buf->data;
 745                 *(p++)=SSL2_MT_CLIENT_FINISHED;
 746                 if (s->s2->conn_id_length > sizeof s->s2->conn_id)
 747                         {
 748                         SSLerr(SSL_F_CLIENT_FINISHED, ERR_R_INTERNAL_ERROR);
 749                         return -1;
 750                         }
 751                 memcpy(p,s->s2->conn_id,(unsigned int)s->s2->conn_id_length);
 752
 753                 s->state=SSL2_ST_SEND_CLIENT_FINISHED_B;
 754                 s->init_num=s->s2->conn_id_length+1;
 755                 s->init_off=0;
 756                 }
 757         return(ssl2_do_write(s));
 758         }
 759
 760 /* read the data and then respond */
 761 static int client_certificate(SSL *s)
 762         {
 763         unsigned char *buf;
 764         unsigned char *p,*d;
 765         int i;
 766         unsigned int n;
 767         int cert_ch_len;
 768         unsigned char *cert_ch;
 769
 770         buf=(unsigned char *)s->init_buf->data;
 771
 772         /* We have a cert associated with the SSL, so attach it to
 773          * the session if it does not have one */
 774
 775         if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_A)
 776                 {
 777                 i=ssl2_read(s,(char *)&(buf[s->init_num]),
 778                         SSL2_MAX_CERT_CHALLENGE_LENGTH+2-s->init_num);
 779                 if (i<(SSL2_MIN_CERT_CHALLENGE_LENGTH+2-s->init_num))
 780                         return(ssl2_part_read(s,SSL_F_CLIENT_CERTIFICATE,i));
 781                 s->init_num += i;
 782                 if (s->msg_callback)
 783                         s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg); /* REQUEST-CERTIFICATE */
 784
 785                 /* type=buf[0]; */
 786                 /* type eq x509 */
 787                 if (buf[1] != SSL2_AT_MD5_WITH_RSA_ENCRYPTION)
 788                         {
 789                         ssl2_return_error(s,SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE);
 790                         SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_AUTHENTICATION_TYPE);
 791                         return(-1);
 792                         }
 793
 794                 if ((s->cert == NULL) ||
 795                         (s->cert->key->x509 == NULL) ||
 796                         (s->cert->key->privatekey == NULL))
 797                         {
 798                         s->state=SSL2_ST_X509_GET_CLIENT_CERTIFICATE;
 799                         }
 800                 else
 801                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_C;
 802                 }
 803
 804         cert_ch = buf + 2;
 805         cert_ch_len = s->init_num - 2;
 806
 807         if (s->state == SSL2_ST_X509_GET_CLIENT_CERTIFICATE)
 808                 {
 809                 X509 *x509=NULL;
 810                 EVP_PKEY *pkey=NULL;
 811
 812                 /* If we get an error we need to
 813                  * ssl->rwstate=SSL_X509_LOOKUP;
 814                  * return(error);
 815                  * We should then be retried when things are ok and we
 816                  * can get a cert or not */
 817
 818                 i=0;
 819                 if (s->ctx->client_cert_cb != NULL)
 820                         {
 821                         i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
 822                         }
 823
 824                 if (i < 0)
 825                         {
 826                         s->rwstate=SSL_X509_LOOKUP;
 827                         return(-1);
 828                         }
 829                 s->rwstate=SSL_NOTHING;
 830
 831                 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
 832                         {
 833                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_C;
 834                         if (    !SSL_use_certificate(s,x509) ||
 835                                 !SSL_use_PrivateKey(s,pkey))
 836                                 {
 837                                 i=0;
 838                                 }
 839                         X509_free(x509);
 840                         EVP_PKEY_free(pkey);
 841                         }
 842                 else if (i == 1)
 843                         {
 844                         if (x509 != NULL) X509_free(x509);
 845                         if (pkey != NULL) EVP_PKEY_free(pkey);
 846                         SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
 847                         i=0;
 848                         }
 849
 850                 if (i == 0)
 851                         {
 852                         /* We have no client certificate to respond with
 853                          * so send the correct error message back */
 854                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_B;
 855                         p=buf;
 856                         *(p++)=SSL2_MT_ERROR;
 857                         s2n(SSL2_PE_NO_CERTIFICATE,p);
 858                         s->init_off=0;
 859                         s->init_num=3;
 860                         /* Write is done at the end */
 861                         }
 862                 }
 863
 864         if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_B)
 865                 {
 866                 return(ssl2_do_write(s));
 867                 }
 868
 869         if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_C)
 870                 {
 871                 EVP_MD_CTX ctx;
 872
 873                 /* ok, now we calculate the checksum
 874                  * do it first so we can reuse buf :-) */
 875                 p=buf;
 876                 EVP_MD_CTX_init(&ctx);
 877                 EVP_SignInit_ex(&ctx,s->ctx->rsa_md5, NULL);
 878                 EVP_SignUpdate(&ctx,s->s2->key_material,
 879                                s->s2->key_material_length);
 880                 EVP_SignUpdate(&ctx,cert_ch,(unsigned int)cert_ch_len);
 881                 n=i2d_X509(s->session->sess_cert->peer_key->x509,&p);
 882                 EVP_SignUpdate(&ctx,buf,(unsigned int)n);
 883
 884                 p=buf;
 885                 d=p+6;
 886                 *(p++)=SSL2_MT_CLIENT_CERTIFICATE;
 887                 *(p++)=SSL2_CT_X509_CERTIFICATE;
 888                 n=i2d_X509(s->cert->key->x509,&d);
 889                 s2n(n,p);
 890
 891                 if (!EVP_SignFinal(&ctx,d,&n,s->cert->key->privatekey))
 892                         {
 893                         /* this is not good.  If things have failed it
 894                          * means there so something wrong with the key.
 895                          * We will continue with a 0 length signature
 896                          */
 897                         }
 898                 EVP_MD_CTX_cleanup(&ctx);
 899                 s2n(n,p);
 900                 d+=n;
 901
 902                 s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_D;
 903                 s->init_num=d-buf;
 904                 s->init_off=0;
 905                 }
 906         /* if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_D) */
 907         return(ssl2_do_write(s));
 908         }
 909
 910 static int get_server_verify(SSL *s)
 911         {
 912         unsigned char *p;
 913         int i, n, len;
 914
 915         p=(unsigned char *)s->init_buf->data;
 916         if (s->state == SSL2_ST_GET_SERVER_VERIFY_A)
 917                 {
 918                 i=ssl2_read(s,(char *)&(p[s->init_num]),1-s->init_num);
 919                 if (i < (1-s->init_num))
 920                         return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i));
 921                 s->init_num += i;
 922
 923                 s->state= SSL2_ST_GET_SERVER_VERIFY_B;
 924                 if (*p != SSL2_MT_SERVER_VERIFY)
 925                         {
 926                         if (p[0] != SSL2_MT_ERROR)
 927                                 {
 928                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 929                                 SSLerr(SSL_F_GET_SERVER_VERIFY,
 930                                         SSL_R_READ_WRONG_PACKET_TYPE);
 931                                 }
 932                         else
 933                                 {
 934                                 SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_PEER_ERROR);
 935                                 /* try to read the error message */
 936                                 i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num);
 937                                 return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i);
 938                                 }
 939                         return(-1);
 940                         }
 941                 }
 942
 943         p=(unsigned char *)s->init_buf->data;
 944         len = 1 + s->s2->challenge_length;
 945         n =  len - s->init_num;
 946         i = ssl2_read(s,(char *)&(p[s->init_num]),n);
 947         if (i < n)
 948                 return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i));
 949         if (s->msg_callback)
 950                 s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); /* SERVER-VERIFY */
 951         p += 1;
 952
 953         if (memcmp(p,s->s2->challenge,s->s2->challenge_length) != 0)
 954                 {
 955                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 956                 SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_CHALLENGE_IS_DIFFERENT);
 957                 return(-1);
 958                 }
 959         return(1);
 960         }
 961
 962 static int get_server_finished(SSL *s)
 963         {
 964         unsigned char *buf;
 965         unsigned char *p;
 966         int i, n, len;
 967
 968         buf=(unsigned char *)s->init_buf->data;
 969         p=buf;
 970         if (s->state == SSL2_ST_GET_SERVER_FINISHED_A)
 971                 {
 972                 i=ssl2_read(s,(char *)&(buf[s->init_num]),1-s->init_num);
 973                 if (i < (1-s->init_num))
 974                         return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i));
 975                 s->init_num += i;
 976
 977                 if (*p == SSL2_MT_REQUEST_CERTIFICATE)
 978                         {
 979                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_A;
 980                         return(1);
 981                         }
 982                 else if (*p != SSL2_MT_SERVER_FINISHED)
 983                         {
 984                         if (p[0] != SSL2_MT_ERROR)
 985                                 {
 986                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 987                                 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_READ_WRONG_PACKET_TYPE);
 988                                 }
 989                         else
 990                                 {
 991                                 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_PEER_ERROR);
 992                                 /* try to read the error message */
 993                                 i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num);
 994                                 return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i);
 995                                 }
 996                         return(-1);
 997                         }
 998                 s->state=SSL2_ST_GET_SERVER_FINISHED_B;
 999                 }
1000
1001         len = 1 + SSL2_SSL_SESSION_ID_LENGTH;
1002         n = len - s->init_num;
1003         i = ssl2_read(s,(char *)&(buf[s->init_num]), n);
1004         if (i < n) /* XXX could be shorter than SSL2_SSL_SESSION_ID_LENGTH, that's the maximum */
1005                 return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i));
1006         s->init_num += i;
1007         if (s->msg_callback)
1008                 s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg); /* SERVER-FINISHED */
1009
1010         if (!s->hit) /* new session */
1011                 {
1012                 /* new session-id */
1013                 /* Make sure we were not trying to re-use an old SSL_SESSION
1014                  * or bad things can happen */
1015                 /* ZZZZZZZZZZZZZ */
1016                 s->session->session_id_length=SSL2_SSL_SESSION_ID_LENGTH;
1017                 memcpy(s->session->session_id,p+1,SSL2_SSL_SESSION_ID_LENGTH);
1018                 }
1019         else
1020                 {
1021                 if (!(s->options & SSL_OP_MICROSOFT_SESS_ID_BUG))
1022                         {
1023                         if ((s->session->session_id_length > sizeof s->session->session_id)
1024                             || (0 != memcmp(buf + 1, s->session->session_id,
1025                                             (unsigned int)s->session->session_id_length)))
1026                                 {
1027                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
1028                                 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_SSL_SESSION_ID_IS_DIFFERENT);
1029                                 return(-1);
1030                                 }
1031                         }
1032                 }
1033         s->state = SSL_ST_OK;
1034         return(1);
1035         }
1036
1037 /* loads in the certificate from the server */
1038 int ssl2_set_certificate(SSL *s, int type, int len, unsigned char *data)
1039         {
1040         STACK_OF(X509) *sk=NULL;
1041         EVP_PKEY *pkey=NULL;
1042         SESS_CERT *sc=NULL;
1043         int i;
1044         X509 *x509=NULL;
1045         int ret=0;
1046
1047         x509=d2i_X509(NULL,&data,(long)len);
1048         if (x509 == NULL)
1049                 {
1050                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_X509_LIB);
1051                 goto err;
1052                 }
1053
1054         if ((sk=sk_X509_new_null()) == NULL || !sk_X509_push(sk,x509))
1055                 {
1056                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1057                 goto err;
1058                 }
1059
1060         i=ssl_verify_cert_chain(s,sk);
1061
1062         if ((s->verify_mode != SSL_VERIFY_NONE) && (!i))
1063                 {
1064                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1065                 goto err;
1066                 }
1067         ERR_clear_error(); /* but we keep s->verify_result */
1068         s->session->verify_result = s->verify_result;
1069
1070         /* server's cert for this session */
1071         sc=ssl_sess_cert_new();
1072         if (sc == NULL)
1073                 {
1074                 ret= -1;
1075                 goto err;
1076                 }
1077         if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1078         s->session->sess_cert=sc;
1079
1080         sc->peer_pkeys[SSL_PKEY_RSA_ENC].x509=x509;
1081         sc->peer_key= &(sc->peer_pkeys[SSL_PKEY_RSA_ENC]);
1082
1083         pkey=X509_get_pubkey(x509);
1084         x509=NULL;
1085         if (pkey == NULL)
1086                 {
1087                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_UNABLE_TO_EXTRACT_PUBLIC_KEY);
1088                 goto err;
1089                 }
1090         if (pkey->type != EVP_PKEY_RSA)
1091                 {
1092                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_PUBLIC_KEY_NOT_RSA);
1093                 goto err;
1094                 }
1095
1096         if (!ssl_set_peer_cert_type(sc,SSL2_CT_X509_CERTIFICATE))
1097                 goto err;
1098         ret=1;
1099 err:
1100         sk_X509_free(sk);
1101         X509_free(x509);
1102         EVP_PKEY_free(pkey);
1103         return(ret);
1104         }
1105
1106 static int ssl_rsa_public_encrypt(SESS_CERT *sc, int len, unsigned char *from,
1107              unsigned char *to, int padding)
1108         {
1109         EVP_PKEY *pkey=NULL;
1110         int i= -1;
1111
1112         if ((sc == NULL) || (sc->peer_key->x509 == NULL) ||
1113                 ((pkey=X509_get_pubkey(sc->peer_key->x509)) == NULL))
1114                 {
1115                 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_NO_PUBLICKEY);
1116                 return(-1);
1117                 }
1118         if (pkey->type != EVP_PKEY_RSA)
1119                 {
1120                 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_PUBLIC_KEY_IS_NOT_RSA);
1121                 goto end;
1122                 }
1123
1124         /* we have the public key */
1125         i=RSA_public_encrypt(len,from,to,pkey->pkey.rsa,padding);
1126         if (i < 0)
1127                 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,ERR_R_RSA_LIB);
1128 end:
1129         EVP_PKEY_free(pkey);
1130         return(i);
1131         }
1132 #else /* !OPENSSL_NO_SSL2 */
1133
1134 # if PEDANTIC
1135 static void *dummy=&dummy;
1136 # endif
1137
1138 #endif