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
 120 static const SSL_METHOD *ssl2_get_client_method(int ver);
 121 static int get_server_finished(SSL *s);
 122 static int get_server_verify(SSL *s);
 123 static int get_server_hello(SSL *s);
 124 static int client_hello(SSL *s);
 125 static int client_master_key(SSL *s);
 126 static int client_finished(SSL *s);
 127 static int client_certificate(SSL *s);
 128 static int ssl_rsa_public_encrypt(SESS_CERT *sc, int len, unsigned char *from,
 129         unsigned char *to,int padding);
 130 #define BREAK   break
 131
 132 static const SSL_METHOD *ssl2_get_client_method(int ver)
 133         {
 134         if (ver == SSL2_VERSION)
 135                 return(SSLv2_client_method());
 136         else
 137                 return(NULL);
 138         }
 139
 140 IMPLEMENT_ssl2_meth_func(SSLv2_client_method,
 141                         ssl_undefined_function,
 142                         ssl2_connect,
 143                         ssl2_get_client_method)
 144
 145 int ssl2_connect(SSL *s)
 146         {
 147         unsigned long l=(unsigned long)time(NULL);
 148         BUF_MEM *buf=NULL;
 149         int ret= -1;
 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)) SSL_clear(s);
 165
 166         for (;;)
 167                 {
 168                 state=s->state;
 169
 170                 switch (s->state)
 171                         {
 172                 case SSL_ST_BEFORE:
 173                 case SSL_ST_CONNECT:
 174                 case SSL_ST_BEFORE|SSL_ST_CONNECT:
 175                 case SSL_ST_OK|SSL_ST_CONNECT:
 176
 177                         s->server=0;
 178                         if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
 179
 180                         s->version=SSL2_VERSION;
 181                         s->type=SSL_ST_CONNECT;
 182
 183                         buf=s->init_buf;
 184                         if ((buf == NULL) && ((buf=BUF_MEM_new()) == NULL))
 185                                 {
 186                                 ret= -1;
 187                                 goto end;
 188                                 }
 189                         if (!BUF_MEM_grow(buf,
 190                                 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER))
 191                                 {
 192                                 if (buf == s->init_buf)
 193                                         buf=NULL;
 194                                 ret= -1;
 195                                 goto end;
 196                                 }
 197                         s->init_buf=buf;
 198                         buf=NULL;
 199                         s->init_num=0;
 200                         s->state=SSL2_ST_SEND_CLIENT_HELLO_A;
 201                         s->ctx->stats.sess_connect++;
 202                         s->handshake_func=ssl2_connect;
 203                         BREAK;
 204
 205                 case SSL2_ST_SEND_CLIENT_HELLO_A:
 206                 case SSL2_ST_SEND_CLIENT_HELLO_B:
 207                         s->shutdown=0;
 208                         ret=client_hello(s);
 209                         if (ret <= 0) goto end;
 210                         s->init_num=0;
 211                         s->state=SSL2_ST_GET_SERVER_HELLO_A;
 212                         BREAK;
 213
 214                 case SSL2_ST_GET_SERVER_HELLO_A:
 215                 case SSL2_ST_GET_SERVER_HELLO_B:
 216                         ret=get_server_hello(s);
 217                         if (ret <= 0) goto end;
 218                         s->init_num=0;
 219                         if (!s->hit) /* new session */
 220                                 {
 221                                 s->state=SSL2_ST_SEND_CLIENT_MASTER_KEY_A;
 222                                 BREAK;
 223                                 }
 224                         else
 225                                 {
 226                                 s->state=SSL2_ST_CLIENT_START_ENCRYPTION;
 227                                 break;
 228                                 }
 229
 230                 case SSL2_ST_SEND_CLIENT_MASTER_KEY_A:
 231                 case SSL2_ST_SEND_CLIENT_MASTER_KEY_B:
 232                         ret=client_master_key(s);
 233                         if (ret <= 0) goto end;
 234                         s->init_num=0;
 235                         s->state=SSL2_ST_CLIENT_START_ENCRYPTION;
 236                         break;
 237
 238                 case SSL2_ST_CLIENT_START_ENCRYPTION:
 239                         /* Ok, we now have all the stuff needed to
 240                          * start encrypting, so lets fire it up :-) */
 241                         if (!ssl2_enc_init(s,1))
 242                                 {
 243                                 ret= -1;
 244                                 goto end;
 245                                 }
 246                         s->s2->clear_text=0;
 247                         s->state=SSL2_ST_SEND_CLIENT_FINISHED_A;
 248                         break;
 249
 250                 case SSL2_ST_SEND_CLIENT_FINISHED_A:
 251                 case SSL2_ST_SEND_CLIENT_FINISHED_B:
 252                         ret=client_finished(s);
 253                         if (ret <= 0) goto end;
 254                         s->init_num=0;
 255                         s->state=SSL2_ST_GET_SERVER_VERIFY_A;
 256                         break;
 257
 258                 case SSL2_ST_GET_SERVER_VERIFY_A:
 259                 case SSL2_ST_GET_SERVER_VERIFY_B:
 260                         ret=get_server_verify(s);
 261                         if (ret <= 0) goto end;
 262                         s->init_num=0;
 263                         s->state=SSL2_ST_GET_SERVER_FINISHED_A;
 264                         break;
 265
 266                 case SSL2_ST_GET_SERVER_FINISHED_A:
 267                 case SSL2_ST_GET_SERVER_FINISHED_B:
 268                         ret=get_server_finished(s);
 269                         if (ret <= 0) goto end;
 270                         break;
 271
 272                 case SSL2_ST_SEND_CLIENT_CERTIFICATE_A:
 273                 case SSL2_ST_SEND_CLIENT_CERTIFICATE_B:
 274                 case SSL2_ST_SEND_CLIENT_CERTIFICATE_C:
 275                 case SSL2_ST_SEND_CLIENT_CERTIFICATE_D:
 276                 case SSL2_ST_X509_GET_CLIENT_CERTIFICATE:
 277                         ret=client_certificate(s);
 278                         if (ret <= 0) goto end;
 279                         s->init_num=0;
 280                         s->state=SSL2_ST_GET_SERVER_FINISHED_A;
 281                         break;
 282
 283                 case SSL_ST_OK:
 284                         if (s->init_buf != NULL)
 285                                 {
 286                                 BUF_MEM_free(s->init_buf);
 287                                 s->init_buf=NULL;
 288                                 }
 289                         s->init_num=0;
 290                 /*      ERR_clear_error();*/
 291
 292                         /* If we want to cache session-ids in the client
 293                          * and we successfully add the session-id to the
 294                          * cache, and there is a callback, then pass it out.
 295                          * 26/11/96 - eay - only add if not a re-used session.
 296                          */
 297
 298                         ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
 299                         if (s->hit) s->ctx->stats.sess_hit++;
 300
 301                         ret=1;
 302                         /* s->server=0; */
 303                         s->ctx->stats.sess_connect_good++;
 304
 305                         if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
 306
 307                         goto end;
 308                         /* break; */
 309                 default:
 310                         SSLerr(SSL_F_SSL2_CONNECT,SSL_R_UNKNOWN_STATE);
 311                         return(-1);
 312                         /* break; */
 313                         }
 314
 315                 if ((cb != NULL) && (s->state != state))
 316                         {
 317                         new_state=s->state;
 318                         s->state=state;
 319                         cb(s,SSL_CB_CONNECT_LOOP,1);
 320                         s->state=new_state;
 321                         }
 322                 }
 323 end:
 324         s->in_handshake--;
 325         if (buf != NULL)
 326                 BUF_MEM_free(buf);
 327         if (cb != NULL)
 328                 cb(s,SSL_CB_CONNECT_EXIT,ret);
 329         return(ret);
 330         }
 331
 332 static int get_server_hello(SSL *s)
 333         {
 334         unsigned char *buf;
 335         unsigned char *p;
 336         int i,j;
 337         unsigned long len;
 338         STACK_OF(SSL_CIPHER) *sk=NULL,*cl, *prio, *allow;
 339
 340         buf=(unsigned char *)s->init_buf->data;
 341         p=buf;
 342         if (s->state == SSL2_ST_GET_SERVER_HELLO_A)
 343                 {
 344                 i=ssl2_read(s,(char *)&(buf[s->init_num]),11-s->init_num);
 345                 if (i < (11-s->init_num))
 346                         return(ssl2_part_read(s,SSL_F_GET_SERVER_HELLO,i));
 347                 s->init_num = 11;
 348
 349                 if (*(p++) != SSL2_MT_SERVER_HELLO)
 350                         {
 351                         if (p[-1] != SSL2_MT_ERROR)
 352                                 {
 353                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 354                                 SSLerr(SSL_F_GET_SERVER_HELLO,
 355                                         SSL_R_READ_WRONG_PACKET_TYPE);
 356                                 }
 357                         else
 358                                 SSLerr(SSL_F_GET_SERVER_HELLO,
 359                                         SSL_R_PEER_ERROR);
 360                         return(-1);
 361                         }
 362 #ifdef __APPLE_CC__
 363                 /* The Rhapsody 5.5 (a.k.a. MacOS X) compiler bug
 364                  * workaround. <appro@fy.chalmers.se> */
 365                 s->hit=(i=*(p++))?1:0;
 366 #else
 367                 s->hit=(*(p++))?1:0;
 368 #endif
 369                 s->s2->tmp.cert_type= *(p++);
 370                 n2s(p,i);
 371                 if (i < s->version) s->version=i;
 372                 n2s(p,i); s->s2->tmp.cert_length=i;
 373                 n2s(p,i); s->s2->tmp.csl=i;
 374                 n2s(p,i); s->s2->tmp.conn_id_length=i;
 375                 s->state=SSL2_ST_GET_SERVER_HELLO_B;
 376                 }
 377
 378         /* SSL2_ST_GET_SERVER_HELLO_B */
 379         len = 11 + (unsigned long)s->s2->tmp.cert_length + (unsigned long)s->s2->tmp.csl + (unsigned long)s->s2->tmp.conn_id_length;
 380         if (len > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)
 381                 {
 382                 SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_MESSAGE_TOO_LONG);
 383                 return -1;
 384                 }
 385         j = (int)len - s->init_num;
 386         i = ssl2_read(s,(char *)&(buf[s->init_num]),j);
 387         if (i != j) return(ssl2_part_read(s,SSL_F_GET_SERVER_HELLO,i));
 388         if (s->msg_callback)
 389                 s->msg_callback(0, s->version, 0, buf, (size_t)len, s, s->msg_callback_arg); /* SERVER-HELLO */
 390
 391         /* things are looking good */
 392
 393         p = buf + 11;
 394         if (s->hit)
 395                 {
 396                 if (s->s2->tmp.cert_length != 0)
 397                         {
 398                         SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CERT_LENGTH_NOT_ZERO);
 399                         return(-1);
 400                         }
 401                 if (s->s2->tmp.cert_type != 0)
 402                         {
 403                         if (!(s->options &
 404                                 SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG))
 405                                 {
 406                                 SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CERT_TYPE_NOT_ZERO);
 407                                 return(-1);
 408                                 }
 409                         }
 410                 if (s->s2->tmp.csl != 0)
 411                         {
 412                         SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_REUSE_CIPHER_LIST_NOT_ZERO);
 413                         return(-1);
 414                         }
 415                 }
 416         else
 417                 {
 418 #ifdef undef
 419                 /* very bad */
 420                 memset(s->session->session_id,0,
 421                         SSL_MAX_SSL_SESSION_ID_LENGTH_IN_BYTES);
 422                 s->session->session_id_length=0;
 423                 */
 424 #endif
 425
 426                 /* we need to do this in case we were trying to reuse a
 427                  * client session but others are already reusing it.
 428                  * If this was a new 'blank' session ID, the session-id
 429                  * length will still be 0 */
 430                 if (s->session->session_id_length > 0)
 431                         {
 432                         if (!ssl_get_new_session(s,0))
 433                                 {
 434                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 435                                 return(-1);
 436                                 }
 437                         }
 438
 439                 if (ssl2_set_certificate(s,s->s2->tmp.cert_type,
 440                         s->s2->tmp.cert_length,p) <= 0)
 441                         {
 442                         ssl2_return_error(s,SSL2_PE_BAD_CERTIFICATE);
 443                         return(-1);
 444                         }
 445                 p+=s->s2->tmp.cert_length;
 446
 447                 if (s->s2->tmp.csl == 0)
 448                         {
 449                         ssl2_return_error(s,SSL2_PE_NO_CIPHER);
 450                         SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_NO_CIPHER_LIST);
 451                         return(-1);
 452                         }
 453
 454                 /* We have just received a list of ciphers back from the
 455                  * server.  We need to get the ones that match, then select
 456                  * the one we want the most :-). */
 457
 458                 /* load the ciphers */
 459                 sk=ssl_bytes_to_cipher_list(s,p,s->s2->tmp.csl,
 460                                             &s->session->ciphers);
 461                 p+=s->s2->tmp.csl;
 462                 if (sk == NULL)
 463                         {
 464                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 465                         SSLerr(SSL_F_GET_SERVER_HELLO,ERR_R_MALLOC_FAILURE);
 466                         return(-1);
 467                         }
 468
 469                 sk_SSL_CIPHER_set_cmp_func(sk,ssl_cipher_ptr_id_cmp);
 470
 471                 /* get the array of ciphers we will accept */
 472                 cl=SSL_get_ciphers(s);
 473                 sk_SSL_CIPHER_set_cmp_func(cl,ssl_cipher_ptr_id_cmp);
 474
 475                 /*
 476                  * If server preference flag set, choose the first
 477                  * (highest priority) cipher the server sends, otherwise
 478                  * client preference has priority.
 479                  */
 480                 if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE)
 481                     {
 482                     prio = sk;
 483                     allow = cl;
 484                     }
 485                 else
 486                     {
 487                     prio = cl;
 488                     allow = sk;
 489                     }
 490                 /* In theory we could have ciphers sent back that we
 491                  * don't want to use but that does not matter since we
 492                  * will check against the list we originally sent and
 493                  * for performance reasons we should not bother to match
 494                  * the two lists up just to check. */
 495                 for (i=0; i<sk_SSL_CIPHER_num(prio); i++)
 496                         {
 497                         if (sk_SSL_CIPHER_find(allow,
 498                                              sk_SSL_CIPHER_value(prio,i)) >= 0)
 499                                 break;
 500                         }
 501
 502                 if (i >= sk_SSL_CIPHER_num(prio))
 503                         {
 504                         ssl2_return_error(s,SSL2_PE_NO_CIPHER);
 505                         SSLerr(SSL_F_GET_SERVER_HELLO,SSL_R_NO_CIPHER_MATCH);
 506                         return(-1);
 507                         }
 508                 s->session->cipher=sk_SSL_CIPHER_value(prio,i);
 509
 510
 511                 if (s->session->peer != NULL) /* can't happen*/
 512                         {
 513                         ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 514                         SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
 515                         return(-1);
 516                         }
 517
 518                 s->session->peer = s->session->sess_cert->peer_key->x509;
 519                 /* peer_key->x509 has been set by ssl2_set_certificate. */
 520                 CRYPTO_add(&s->session->peer->references, 1, CRYPTO_LOCK_X509);
 521                 }
 522
 523         if (s->session->sess_cert == NULL
 524       || s->session->peer != s->session->sess_cert->peer_key->x509)
 525                 /* can't happen */
 526                 {
 527                 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 528                 SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
 529                 return(-1);
 530                 }
 531
 532         s->s2->conn_id_length=s->s2->tmp.conn_id_length;
 533         if (s->s2->conn_id_length > sizeof s->s2->conn_id)
 534                 {
 535                 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 536                 SSLerr(SSL_F_GET_SERVER_HELLO, SSL_R_SSL2_CONNECTION_ID_TOO_LONG);
 537                 return -1;
 538                 }
 539         memcpy(s->s2->conn_id,p,s->s2->tmp.conn_id_length);
 540         return(1);
 541         }
 542
 543 static int client_hello(SSL *s)
 544         {
 545         unsigned char *buf;
 546         unsigned char *p,*d;
 547 /*      CIPHER **cipher;*/
 548         int i,n,j;
 549
 550         buf=(unsigned char *)s->init_buf->data;
 551         if (s->state == SSL2_ST_SEND_CLIENT_HELLO_A)
 552                 {
 553                 if ((s->session == NULL) ||
 554                         (s->session->ssl_version != s->version))
 555                         {
 556                         if (!ssl_get_new_session(s,0))
 557                                 {
 558                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 559                                 return(-1);
 560                                 }
 561                         }
 562                 /* else use the pre-loaded session */
 563
 564                 p=buf;                                  /* header */
 565                 d=p+9;                                  /* data section */
 566                 *(p++)=SSL2_MT_CLIENT_HELLO;            /* type */
 567                 s2n(SSL2_VERSION,p);                    /* version */
 568                 n=j=0;
 569
 570                 n=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),d,0);
 571                 d+=n;
 572
 573                 if (n == 0)
 574                         {
 575                         SSLerr(SSL_F_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
 576                         return(-1);
 577                         }
 578
 579                 s2n(n,p);                       /* cipher spec num bytes */
 580
 581                 if ((s->session->session_id_length > 0) &&
 582                         (s->session->session_id_length <=
 583                         SSL2_MAX_SSL_SESSION_ID_LENGTH))
 584                         {
 585                         i=s->session->session_id_length;
 586                         s2n(i,p);               /* session id length */
 587                         memcpy(d,s->session->session_id,(unsigned int)i);
 588                         d+=i;
 589                         }
 590                 else
 591                         {
 592                         s2n(0,p);
 593                         }
 594
 595                 s->s2->challenge_length=SSL2_CHALLENGE_LENGTH;
 596                 s2n(SSL2_CHALLENGE_LENGTH,p);           /* challenge length */
 597                 /*challenge id data*/
 598                 if (RAND_pseudo_bytes(s->s2->challenge,SSL2_CHALLENGE_LENGTH) <= 0)
 599                         return -1;
 600                 memcpy(d,s->s2->challenge,SSL2_CHALLENGE_LENGTH);
 601                 d+=SSL2_CHALLENGE_LENGTH;
 602
 603                 s->state=SSL2_ST_SEND_CLIENT_HELLO_B;
 604                 s->init_num=d-buf;
 605                 s->init_off=0;
 606                 }
 607         /* SSL2_ST_SEND_CLIENT_HELLO_B */
 608         return(ssl2_do_write(s));
 609         }
 610
 611 static int client_master_key(SSL *s)
 612         {
 613         unsigned char *buf;
 614         unsigned char *p,*d;
 615         int clear,enc,karg,i;
 616         SSL_SESSION *sess;
 617         const EVP_CIPHER *c;
 618         const EVP_MD *md;
 619
 620         buf=(unsigned char *)s->init_buf->data;
 621         if (s->state == SSL2_ST_SEND_CLIENT_MASTER_KEY_A)
 622                 {
 623
 624                 if (!ssl_cipher_get_evp(s->session,&c,&md,NULL,NULL,NULL))
 625                         {
 626                         ssl2_return_error(s,SSL2_PE_NO_CIPHER);
 627                         SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS);
 628                         return(-1);
 629                         }
 630                 sess=s->session;
 631                 p=buf;
 632                 d=p+10;
 633                 *(p++)=SSL2_MT_CLIENT_MASTER_KEY;/* type */
 634
 635                 i=ssl_put_cipher_by_char(s,sess->cipher,p);
 636                 p+=i;
 637
 638                 /* make key_arg data */
 639                 i=EVP_CIPHER_iv_length(c);
 640                 sess->key_arg_length=i;
 641                 if (i > SSL_MAX_KEY_ARG_LENGTH)
 642                         {
 643                         ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 644                         SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
 645                         return -1;
 646                         }
 647                 if (i > 0)
 648                         if (RAND_pseudo_bytes(sess->key_arg,i) <= 0)
 649                                 return -1;
 650
 651                 /* make a master key */
 652                 i=EVP_CIPHER_key_length(c);
 653                 sess->master_key_length=i;
 654                 if (i > 0)
 655                         {
 656                         if (i > (int)sizeof(sess->master_key))
 657                                 {
 658                                 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 659                                 SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
 660                                 return -1;
 661                                 }
 662                         if (RAND_bytes(sess->master_key,i) <= 0)
 663                                 {
 664                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 665                                 return(-1);
 666                                 }
 667                         }
 668
 669                 if (sess->cipher->algorithm2 & SSL2_CF_8_BYTE_ENC)
 670                         enc=8;
 671                 else if (SSL_C_IS_EXPORT(sess->cipher))
 672                         enc=5;
 673                 else
 674                         enc=i;
 675
 676                 if ((int)i < enc)
 677                         {
 678                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 679                         SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_CIPHER_TABLE_SRC_ERROR);
 680                         return(-1);
 681                         }
 682                 clear=i-enc;
 683                 s2n(clear,p);
 684                 memcpy(d,sess->master_key,(unsigned int)clear);
 685                 d+=clear;
 686
 687                 enc=ssl_rsa_public_encrypt(sess->sess_cert,enc,
 688                         &(sess->master_key[clear]),d,
 689                         (s->s2->ssl2_rollback)?RSA_SSLV23_PADDING:RSA_PKCS1_PADDING);
 690                 if (enc <= 0)
 691                         {
 692                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 693                         SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PUBLIC_KEY_ENCRYPT_ERROR);
 694                         return(-1);
 695                         }
 696 #ifdef PKCS1_CHECK
 697                 if (s->options & SSL_OP_PKCS1_CHECK_1) d[1]++;
 698                 if (s->options & SSL_OP_PKCS1_CHECK_2)
 699                         sess->master_key[clear]++;
 700 #endif
 701                 s2n(enc,p);
 702                 d+=enc;
 703                 karg=sess->key_arg_length;
 704                 s2n(karg,p); /* key arg size */
 705                 if (karg > (int)sizeof(sess->key_arg))
 706                         {
 707                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 708                         SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
 709                         return -1;
 710                         }
 711                 memcpy(d,sess->key_arg,(unsigned int)karg);
 712                 d+=karg;
 713
 714                 s->state=SSL2_ST_SEND_CLIENT_MASTER_KEY_B;
 715                 s->init_num=d-buf;
 716                 s->init_off=0;
 717                 }
 718
 719         /* SSL2_ST_SEND_CLIENT_MASTER_KEY_B */
 720         return(ssl2_do_write(s));
 721         }
 722
 723 static int client_finished(SSL *s)
 724         {
 725         unsigned char *p;
 726
 727         if (s->state == SSL2_ST_SEND_CLIENT_FINISHED_A)
 728                 {
 729                 p=(unsigned char *)s->init_buf->data;
 730                 *(p++)=SSL2_MT_CLIENT_FINISHED;
 731                 if (s->s2->conn_id_length > sizeof s->s2->conn_id)
 732                         {
 733                         SSLerr(SSL_F_CLIENT_FINISHED, ERR_R_INTERNAL_ERROR);
 734                         return -1;
 735                         }
 736                 memcpy(p,s->s2->conn_id,(unsigned int)s->s2->conn_id_length);
 737
 738                 s->state=SSL2_ST_SEND_CLIENT_FINISHED_B;
 739                 s->init_num=s->s2->conn_id_length+1;
 740                 s->init_off=0;
 741                 }
 742         return(ssl2_do_write(s));
 743         }
 744
 745 /* read the data and then respond */
 746 static int client_certificate(SSL *s)
 747         {
 748         unsigned char *buf;
 749         unsigned char *p,*d;
 750         int i;
 751         unsigned int n;
 752         int cert_ch_len;
 753         unsigned char *cert_ch;
 754
 755         buf=(unsigned char *)s->init_buf->data;
 756
 757         /* We have a cert associated with the SSL, so attach it to
 758          * the session if it does not have one */
 759
 760         if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_A)
 761                 {
 762                 i=ssl2_read(s,(char *)&(buf[s->init_num]),
 763                         SSL2_MAX_CERT_CHALLENGE_LENGTH+2-s->init_num);
 764                 if (i<(SSL2_MIN_CERT_CHALLENGE_LENGTH+2-s->init_num))
 765                         return(ssl2_part_read(s,SSL_F_CLIENT_CERTIFICATE,i));
 766                 s->init_num += i;
 767                 if (s->msg_callback)
 768                         s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg); /* REQUEST-CERTIFICATE */
 769
 770                 /* type=buf[0]; */
 771                 /* type eq x509 */
 772                 if (buf[1] != SSL2_AT_MD5_WITH_RSA_ENCRYPTION)
 773                         {
 774                         ssl2_return_error(s,SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE);
 775                         SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_AUTHENTICATION_TYPE);
 776                         return(-1);
 777                         }
 778
 779                 if ((s->cert == NULL) ||
 780                         (s->cert->key->x509 == NULL) ||
 781                         (s->cert->key->privatekey == NULL))
 782                         {
 783                         s->state=SSL2_ST_X509_GET_CLIENT_CERTIFICATE;
 784                         }
 785                 else
 786                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_C;
 787                 }
 788
 789         cert_ch = buf + 2;
 790         cert_ch_len = s->init_num - 2;
 791
 792         if (s->state == SSL2_ST_X509_GET_CLIENT_CERTIFICATE)
 793                 {
 794                 X509 *x509=NULL;
 795                 EVP_PKEY *pkey=NULL;
 796
 797                 /* If we get an error we need to
 798                  * ssl->rwstate=SSL_X509_LOOKUP;
 799                  * return(error);
 800                  * We should then be retried when things are ok and we
 801                  * can get a cert or not */
 802
 803                 i=0;
 804                 if (s->ctx->client_cert_cb != NULL)
 805                         {
 806                         i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
 807                         }
 808
 809                 if (i < 0)
 810                         {
 811                         s->rwstate=SSL_X509_LOOKUP;
 812                         return(-1);
 813                         }
 814                 s->rwstate=SSL_NOTHING;
 815
 816                 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
 817                         {
 818                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_C;
 819                         if (    !SSL_use_certificate(s,x509) ||
 820                                 !SSL_use_PrivateKey(s,pkey))
 821                                 {
 822                                 i=0;
 823                                 }
 824                         X509_free(x509);
 825                         EVP_PKEY_free(pkey);
 826                         }
 827                 else if (i == 1)
 828                         {
 829                         if (x509 != NULL) X509_free(x509);
 830                         if (pkey != NULL) EVP_PKEY_free(pkey);
 831                         SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
 832                         i=0;
 833                         }
 834
 835                 if (i == 0)
 836                         {
 837                         /* We have no client certificate to respond with
 838                          * so send the correct error message back */
 839                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_B;
 840                         p=buf;
 841                         *(p++)=SSL2_MT_ERROR;
 842                         s2n(SSL2_PE_NO_CERTIFICATE,p);
 843                         s->init_off=0;
 844                         s->init_num=3;
 845                         /* Write is done at the end */
 846                         }
 847                 }
 848
 849         if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_B)
 850                 {
 851                 return(ssl2_do_write(s));
 852                 }
 853
 854         if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_C)
 855                 {
 856                 EVP_MD_CTX ctx;
 857
 858                 /* ok, now we calculate the checksum
 859                  * do it first so we can reuse buf :-) */
 860                 p=buf;
 861                 EVP_MD_CTX_init(&ctx);
 862                 EVP_SignInit_ex(&ctx,s->ctx->rsa_md5, NULL);
 863                 EVP_SignUpdate(&ctx,s->s2->key_material,
 864                                s->s2->key_material_length);
 865                 EVP_SignUpdate(&ctx,cert_ch,(unsigned int)cert_ch_len);
 866                 i=i2d_X509(s->session->sess_cert->peer_key->x509,&p);
 867                 /* Don't update the signature if it fails - FIXME: probably should handle this better */
 868                 if(i > 0)
 869                         EVP_SignUpdate(&ctx,buf,(unsigned int)i);
 870
 871                 p=buf;
 872                 d=p+6;
 873                 *(p++)=SSL2_MT_CLIENT_CERTIFICATE;
 874                 *(p++)=SSL2_CT_X509_CERTIFICATE;
 875                 n=i2d_X509(s->cert->key->x509,&d);
 876                 s2n(n,p);
 877
 878                 if (!EVP_SignFinal(&ctx,d,&n,s->cert->key->privatekey))
 879                         {
 880                         /* this is not good.  If things have failed it
 881                          * means there so something wrong with the key.
 882                          * We will continue with a 0 length signature
 883                          */
 884                         }
 885                 EVP_MD_CTX_cleanup(&ctx);
 886                 s2n(n,p);
 887                 d+=n;
 888
 889                 s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_D;
 890                 s->init_num=d-buf;
 891                 s->init_off=0;
 892                 }
 893         /* if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_D) */
 894         return(ssl2_do_write(s));
 895         }
 896
 897 static int get_server_verify(SSL *s)
 898         {
 899         unsigned char *p;
 900         int i, n, len;
 901
 902         p=(unsigned char *)s->init_buf->data;
 903         if (s->state == SSL2_ST_GET_SERVER_VERIFY_A)
 904                 {
 905                 i=ssl2_read(s,(char *)&(p[s->init_num]),1-s->init_num);
 906                 if (i < (1-s->init_num))
 907                         return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i));
 908                 s->init_num += i;
 909
 910                 s->state= SSL2_ST_GET_SERVER_VERIFY_B;
 911                 if (*p != SSL2_MT_SERVER_VERIFY)
 912                         {
 913                         if (p[0] != SSL2_MT_ERROR)
 914                                 {
 915                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 916                                 SSLerr(SSL_F_GET_SERVER_VERIFY,
 917                                         SSL_R_READ_WRONG_PACKET_TYPE);
 918                                 }
 919                         else
 920                                 {
 921                                 SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_PEER_ERROR);
 922                                 /* try to read the error message */
 923                                 i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num);
 924                                 return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i);
 925                                 }
 926                         return(-1);
 927                         }
 928                 }
 929
 930         p=(unsigned char *)s->init_buf->data;
 931         len = 1 + s->s2->challenge_length;
 932         n =  len - s->init_num;
 933         i = ssl2_read(s,(char *)&(p[s->init_num]),n);
 934         if (i < n)
 935                 return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i));
 936         if (s->msg_callback)
 937                 s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); /* SERVER-VERIFY */
 938         p += 1;
 939
 940         if (memcmp(p,s->s2->challenge,s->s2->challenge_length) != 0)
 941                 {
 942                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 943                 SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_CHALLENGE_IS_DIFFERENT);
 944                 return(-1);
 945                 }
 946         return(1);
 947         }
 948
 949 static int get_server_finished(SSL *s)
 950         {
 951         unsigned char *buf;
 952         unsigned char *p;
 953         int i, n, len;
 954
 955         buf=(unsigned char *)s->init_buf->data;
 956         p=buf;
 957         if (s->state == SSL2_ST_GET_SERVER_FINISHED_A)
 958                 {
 959                 i=ssl2_read(s,(char *)&(buf[s->init_num]),1-s->init_num);
 960                 if (i < (1-s->init_num))
 961                         return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i));
 962                 s->init_num += i;
 963
 964                 if (*p == SSL2_MT_REQUEST_CERTIFICATE)
 965                         {
 966                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_A;
 967                         return(1);
 968                         }
 969                 else if (*p != SSL2_MT_SERVER_FINISHED)
 970                         {
 971                         if (p[0] != SSL2_MT_ERROR)
 972                                 {
 973                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 974                                 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_READ_WRONG_PACKET_TYPE);
 975                                 }
 976                         else
 977                                 {
 978                                 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_PEER_ERROR);
 979                                 /* try to read the error message */
 980                                 i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num);
 981                                 return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i);
 982                                 }
 983                         return(-1);
 984                         }
 985                 s->state=SSL2_ST_GET_SERVER_FINISHED_B;
 986                 }
 987
 988         len = 1 + SSL2_SSL_SESSION_ID_LENGTH;
 989         n = len - s->init_num;
 990         i = ssl2_read(s,(char *)&(buf[s->init_num]), n);
 991         if (i < n) /* XXX could be shorter than SSL2_SSL_SESSION_ID_LENGTH, that's the maximum */
 992                 return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i));
 993         s->init_num += i;
 994         if (s->msg_callback)
 995                 s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg); /* SERVER-FINISHED */
 996
 997         if (!s->hit) /* new session */
 998                 {
 999                 /* new session-id */
1000                 /* Make sure we were not trying to re-use an old SSL_SESSION
1001                  * or bad things can happen */
1002                 /* ZZZZZZZZZZZZZ */
1003                 s->session->session_id_length=SSL2_SSL_SESSION_ID_LENGTH;
1004                 memcpy(s->session->session_id,p+1,SSL2_SSL_SESSION_ID_LENGTH);
1005                 }
1006         else
1007                 {
1008                 if (!(s->options & SSL_OP_MICROSOFT_SESS_ID_BUG))
1009                         {
1010                         if ((s->session->session_id_length > sizeof s->session->session_id)
1011                             || (0 != memcmp(buf + 1, s->session->session_id,
1012                                             (unsigned int)s->session->session_id_length)))
1013                                 {
1014                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
1015                                 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_SSL_SESSION_ID_IS_DIFFERENT);
1016                                 return(-1);
1017                                 }
1018                         }
1019                 }
1020         s->state = SSL_ST_OK;
1021         return(1);
1022         }
1023
1024 /* loads in the certificate from the server */
1025 int ssl2_set_certificate(SSL *s, int type, int len, const unsigned char *data)
1026         {
1027         STACK_OF(X509) *sk=NULL;
1028         EVP_PKEY *pkey=NULL;
1029         SESS_CERT *sc=NULL;
1030         int i;
1031         X509 *x509=NULL;
1032         int ret=0;
1033
1034         x509=d2i_X509(NULL,&data,(long)len);
1035         if (x509 == NULL)
1036                 {
1037                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_X509_LIB);
1038                 goto err;
1039                 }
1040
1041         if ((sk=sk_X509_new_null()) == NULL || !sk_X509_push(sk,x509))
1042                 {
1043                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1044                 goto err;
1045                 }
1046
1047         i=ssl_verify_cert_chain(s,sk);
1048
1049         if ((s->verify_mode != SSL_VERIFY_NONE) && (!i))
1050                 {
1051                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1052                 goto err;
1053                 }
1054         ERR_clear_error(); /* but we keep s->verify_result */
1055         s->session->verify_result = s->verify_result;
1056
1057         /* server's cert for this session */
1058         sc=ssl_sess_cert_new();
1059         if (sc == NULL)
1060                 {
1061                 ret= -1;
1062                 goto err;
1063                 }
1064         if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1065         s->session->sess_cert=sc;
1066
1067         sc->peer_pkeys[SSL_PKEY_RSA_ENC].x509=x509;
1068         sc->peer_key= &(sc->peer_pkeys[SSL_PKEY_RSA_ENC]);
1069
1070         pkey=X509_get_pubkey(x509);
1071         x509=NULL;
1072         if (pkey == NULL)
1073                 {
1074                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_UNABLE_TO_EXTRACT_PUBLIC_KEY);
1075                 goto err;
1076                 }
1077         if (pkey->type != EVP_PKEY_RSA)
1078                 {
1079                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_PUBLIC_KEY_NOT_RSA);
1080                 goto err;
1081                 }
1082
1083         if (!ssl_set_peer_cert_type(sc,SSL2_CT_X509_CERTIFICATE))
1084                 goto err;
1085         ret=1;
1086 err:
1087         sk_X509_free(sk);
1088         X509_free(x509);
1089         EVP_PKEY_free(pkey);
1090         return(ret);
1091         }
1092
1093 static int ssl_rsa_public_encrypt(SESS_CERT *sc, int len, unsigned char *from,
1094              unsigned char *to, int padding)
1095         {
1096         EVP_PKEY *pkey=NULL;
1097         int i= -1;
1098
1099         if ((sc == NULL) || (sc->peer_key->x509 == NULL) ||
1100                 ((pkey=X509_get_pubkey(sc->peer_key->x509)) == NULL))
1101                 {
1102                 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_NO_PUBLICKEY);
1103                 return(-1);
1104                 }
1105         if (pkey->type != EVP_PKEY_RSA)
1106                 {
1107                 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_PUBLIC_KEY_IS_NOT_RSA);
1108                 goto end;
1109                 }
1110
1111         /* we have the public key */
1112         i=RSA_public_encrypt(len,from,to,pkey->pkey.rsa,padding);
1113         if (i < 0)
1114                 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,ERR_R_RSA_LIB);
1115 end:
1116         EVP_PKEY_free(pkey);
1117         return(i);
1118         }
1119 #else /* !OPENSSL_NO_SSL2 */
1120
1121 # if PEDANTIC
1122 static void *dummy=&dummy;
1123 # endif
1124
1125 #endif