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=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->peer != s->session->sess_cert->peer_key->x509)
 524                 /* can't happen */
 525                 {
 526                 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 527                 SSLerr(SSL_F_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
 528                 return(-1);
 529                 }
 530
 531         s->s2->conn_id_length=s->s2->tmp.conn_id_length;
 532         if (s->s2->conn_id_length > sizeof s->s2->conn_id)
 533                 {
 534                 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 535                 SSLerr(SSL_F_GET_SERVER_HELLO, SSL_R_SSL2_CONNECTION_ID_TOO_LONG);
 536                 return -1;
 537                 }
 538         memcpy(s->s2->conn_id,p,s->s2->tmp.conn_id_length);
 539         return(1);
 540         }
 541
 542 static int client_hello(SSL *s)
 543         {
 544         unsigned char *buf;
 545         unsigned char *p,*d;
 546 /*      CIPHER **cipher;*/
 547         int i,n,j;
 548
 549         buf=(unsigned char *)s->init_buf->data;
 550         if (s->state == SSL2_ST_SEND_CLIENT_HELLO_A)
 551                 {
 552                 if ((s->session == NULL) ||
 553                         (s->session->ssl_version != s->version))
 554                         {
 555                         if (!ssl_get_new_session(s,0))
 556                                 {
 557                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 558                                 return(-1);
 559                                 }
 560                         }
 561                 /* else use the pre-loaded session */
 562
 563                 p=buf;                                  /* header */
 564                 d=p+9;                                  /* data section */
 565                 *(p++)=SSL2_MT_CLIENT_HELLO;            /* type */
 566                 s2n(SSL2_VERSION,p);                    /* version */
 567                 n=j=0;
 568
 569                 n=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),d,0);
 570                 d+=n;
 571
 572                 if (n == 0)
 573                         {
 574                         SSLerr(SSL_F_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
 575                         return(-1);
 576                         }
 577
 578                 s2n(n,p);                       /* cipher spec num bytes */
 579
 580                 if ((s->session->session_id_length > 0) &&
 581                         (s->session->session_id_length <=
 582                         SSL2_MAX_SSL_SESSION_ID_LENGTH))
 583                         {
 584                         i=s->session->session_id_length;
 585                         s2n(i,p);               /* session id length */
 586                         memcpy(d,s->session->session_id,(unsigned int)i);
 587                         d+=i;
 588                         }
 589                 else
 590                         {
 591                         s2n(0,p);
 592                         }
 593
 594                 s->s2->challenge_length=SSL2_CHALLENGE_LENGTH;
 595                 s2n(SSL2_CHALLENGE_LENGTH,p);           /* challenge length */
 596                 /*challenge id data*/
 597                 if (RAND_pseudo_bytes(s->s2->challenge,SSL2_CHALLENGE_LENGTH) <= 0)
 598                         return -1;
 599                 memcpy(d,s->s2->challenge,SSL2_CHALLENGE_LENGTH);
 600                 d+=SSL2_CHALLENGE_LENGTH;
 601
 602                 s->state=SSL2_ST_SEND_CLIENT_HELLO_B;
 603                 s->init_num=d-buf;
 604                 s->init_off=0;
 605                 }
 606         /* SSL2_ST_SEND_CLIENT_HELLO_B */
 607         return(ssl2_do_write(s));
 608         }
 609
 610 static int client_master_key(SSL *s)
 611         {
 612         unsigned char *buf;
 613         unsigned char *p,*d;
 614         int clear,enc,karg,i;
 615         SSL_SESSION *sess;
 616         const EVP_CIPHER *c;
 617         const EVP_MD *md;
 618
 619         buf=(unsigned char *)s->init_buf->data;
 620         if (s->state == SSL2_ST_SEND_CLIENT_MASTER_KEY_A)
 621                 {
 622
 623                 if (!ssl_cipher_get_evp(s->session,&c,&md,NULL))
 624                         {
 625                         ssl2_return_error(s,SSL2_PE_NO_CIPHER);
 626                         SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS);
 627                         return(-1);
 628                         }
 629                 sess=s->session;
 630                 p=buf;
 631                 d=p+10;
 632                 *(p++)=SSL2_MT_CLIENT_MASTER_KEY;/* type */
 633
 634                 i=ssl_put_cipher_by_char(s,sess->cipher,p);
 635                 p+=i;
 636
 637                 /* make key_arg data */
 638                 i=EVP_CIPHER_iv_length(c);
 639                 sess->key_arg_length=i;
 640                 if (i > SSL_MAX_KEY_ARG_LENGTH)
 641                         {
 642                         ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 643                         SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
 644                         return -1;
 645                         }
 646                 if (i > 0)
 647                         if (RAND_pseudo_bytes(sess->key_arg,i) <= 0)
 648                                 return -1;
 649
 650                 /* make a master key */
 651                 i=EVP_CIPHER_key_length(c);
 652                 sess->master_key_length=i;
 653                 if (i > 0)
 654                         {
 655                         if (i > (int)sizeof(sess->master_key))
 656                                 {
 657                                 ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
 658                                 SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
 659                                 return -1;
 660                                 }
 661                         if (RAND_bytes(sess->master_key,i) <= 0)
 662                                 {
 663                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 664                                 return(-1);
 665                                 }
 666                         }
 667
 668                 if (sess->cipher->algorithm2 & SSL2_CF_8_BYTE_ENC)
 669                         enc=8;
 670                 else if (SSL_C_IS_EXPORT(sess->cipher))
 671                         enc=5;
 672                 else
 673                         enc=i;
 674
 675                 if ((int)i < enc)
 676                         {
 677                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 678                         SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_CIPHER_TABLE_SRC_ERROR);
 679                         return(-1);
 680                         }
 681                 clear=i-enc;
 682                 s2n(clear,p);
 683                 memcpy(d,sess->master_key,(unsigned int)clear);
 684                 d+=clear;
 685
 686                 enc=ssl_rsa_public_encrypt(sess->sess_cert,enc,
 687                         &(sess->master_key[clear]),d,
 688                         (s->s2->ssl2_rollback)?RSA_SSLV23_PADDING:RSA_PKCS1_PADDING);
 689                 if (enc <= 0)
 690                         {
 691                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 692                         SSLerr(SSL_F_CLIENT_MASTER_KEY,SSL_R_PUBLIC_KEY_ENCRYPT_ERROR);
 693                         return(-1);
 694                         }
 695 #ifdef PKCS1_CHECK
 696                 if (s->options & SSL_OP_PKCS1_CHECK_1) d[1]++;
 697                 if (s->options & SSL_OP_PKCS1_CHECK_2)
 698                         sess->master_key[clear]++;
 699 #endif
 700                 s2n(enc,p);
 701                 d+=enc;
 702                 karg=sess->key_arg_length;
 703                 s2n(karg,p); /* key arg size */
 704                 if (karg > (int)sizeof(sess->key_arg))
 705                         {
 706                         ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 707                         SSLerr(SSL_F_CLIENT_MASTER_KEY, ERR_R_INTERNAL_ERROR);
 708                         return -1;
 709                         }
 710                 memcpy(d,sess->key_arg,(unsigned int)karg);
 711                 d+=karg;
 712
 713                 s->state=SSL2_ST_SEND_CLIENT_MASTER_KEY_B;
 714                 s->init_num=d-buf;
 715                 s->init_off=0;
 716                 }
 717
 718         /* SSL2_ST_SEND_CLIENT_MASTER_KEY_B */
 719         return(ssl2_do_write(s));
 720         }
 721
 722 static int client_finished(SSL *s)
 723         {
 724         unsigned char *p;
 725
 726         if (s->state == SSL2_ST_SEND_CLIENT_FINISHED_A)
 727                 {
 728                 p=(unsigned char *)s->init_buf->data;
 729                 *(p++)=SSL2_MT_CLIENT_FINISHED;
 730                 if (s->s2->conn_id_length > sizeof s->s2->conn_id)
 731                         {
 732                         SSLerr(SSL_F_CLIENT_FINISHED, ERR_R_INTERNAL_ERROR);
 733                         return -1;
 734                         }
 735                 memcpy(p,s->s2->conn_id,(unsigned int)s->s2->conn_id_length);
 736
 737                 s->state=SSL2_ST_SEND_CLIENT_FINISHED_B;
 738                 s->init_num=s->s2->conn_id_length+1;
 739                 s->init_off=0;
 740                 }
 741         return(ssl2_do_write(s));
 742         }
 743
 744 /* read the data and then respond */
 745 static int client_certificate(SSL *s)
 746         {
 747         unsigned char *buf;
 748         unsigned char *p,*d;
 749         int i;
 750         unsigned int n;
 751         int cert_ch_len;
 752         unsigned char *cert_ch;
 753
 754         buf=(unsigned char *)s->init_buf->data;
 755
 756         /* We have a cert associated with the SSL, so attach it to
 757          * the session if it does not have one */
 758
 759         if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_A)
 760                 {
 761                 i=ssl2_read(s,(char *)&(buf[s->init_num]),
 762                         SSL2_MAX_CERT_CHALLENGE_LENGTH+2-s->init_num);
 763                 if (i<(SSL2_MIN_CERT_CHALLENGE_LENGTH+2-s->init_num))
 764                         return(ssl2_part_read(s,SSL_F_CLIENT_CERTIFICATE,i));
 765                 s->init_num += i;
 766                 if (s->msg_callback)
 767                         s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg); /* REQUEST-CERTIFICATE */
 768
 769                 /* type=buf[0]; */
 770                 /* type eq x509 */
 771                 if (buf[1] != SSL2_AT_MD5_WITH_RSA_ENCRYPTION)
 772                         {
 773                         ssl2_return_error(s,SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE);
 774                         SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_AUTHENTICATION_TYPE);
 775                         return(-1);
 776                         }
 777
 778                 if ((s->cert == NULL) ||
 779                         (s->cert->key->x509 == NULL) ||
 780                         (s->cert->key->privatekey == NULL))
 781                         {
 782                         s->state=SSL2_ST_X509_GET_CLIENT_CERTIFICATE;
 783                         }
 784                 else
 785                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_C;
 786                 }
 787
 788         cert_ch = buf + 2;
 789         cert_ch_len = s->init_num - 2;
 790
 791         if (s->state == SSL2_ST_X509_GET_CLIENT_CERTIFICATE)
 792                 {
 793                 X509 *x509=NULL;
 794                 EVP_PKEY *pkey=NULL;
 795
 796                 /* If we get an error we need to
 797                  * ssl->rwstate=SSL_X509_LOOKUP;
 798                  * return(error);
 799                  * We should then be retried when things are ok and we
 800                  * can get a cert or not */
 801
 802                 i=0;
 803                 if (s->ctx->client_cert_cb != NULL)
 804                         {
 805                         i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
 806                         }
 807
 808                 if (i < 0)
 809                         {
 810                         s->rwstate=SSL_X509_LOOKUP;
 811                         return(-1);
 812                         }
 813                 s->rwstate=SSL_NOTHING;
 814
 815                 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
 816                         {
 817                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_C;
 818                         if (    !SSL_use_certificate(s,x509) ||
 819                                 !SSL_use_PrivateKey(s,pkey))
 820                                 {
 821                                 i=0;
 822                                 }
 823                         X509_free(x509);
 824                         EVP_PKEY_free(pkey);
 825                         }
 826                 else if (i == 1)
 827                         {
 828                         if (x509 != NULL) X509_free(x509);
 829                         if (pkey != NULL) EVP_PKEY_free(pkey);
 830                         SSLerr(SSL_F_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
 831                         i=0;
 832                         }
 833
 834                 if (i == 0)
 835                         {
 836                         /* We have no client certificate to respond with
 837                          * so send the correct error message back */
 838                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_B;
 839                         p=buf;
 840                         *(p++)=SSL2_MT_ERROR;
 841                         s2n(SSL2_PE_NO_CERTIFICATE,p);
 842                         s->init_off=0;
 843                         s->init_num=3;
 844                         /* Write is done at the end */
 845                         }
 846                 }
 847
 848         if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_B)
 849                 {
 850                 return(ssl2_do_write(s));
 851                 }
 852
 853         if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_C)
 854                 {
 855                 EVP_MD_CTX ctx;
 856
 857                 /* ok, now we calculate the checksum
 858                  * do it first so we can reuse buf :-) */
 859                 p=buf;
 860                 EVP_MD_CTX_init(&ctx);
 861                 EVP_SignInit_ex(&ctx,s->ctx->rsa_md5, NULL);
 862                 EVP_SignUpdate(&ctx,s->s2->key_material,
 863                                s->s2->key_material_length);
 864                 EVP_SignUpdate(&ctx,cert_ch,(unsigned int)cert_ch_len);
 865                 n=i2d_X509(s->session->sess_cert->peer_key->x509,&p);
 866                 EVP_SignUpdate(&ctx,buf,(unsigned int)n);
 867
 868                 p=buf;
 869                 d=p+6;
 870                 *(p++)=SSL2_MT_CLIENT_CERTIFICATE;
 871                 *(p++)=SSL2_CT_X509_CERTIFICATE;
 872                 n=i2d_X509(s->cert->key->x509,&d);
 873                 s2n(n,p);
 874
 875                 if (!EVP_SignFinal(&ctx,d,&n,s->cert->key->privatekey))
 876                         {
 877                         /* this is not good.  If things have failed it
 878                          * means there so something wrong with the key.
 879                          * We will continue with a 0 length signature
 880                          */
 881                         }
 882                 EVP_MD_CTX_cleanup(&ctx);
 883                 s2n(n,p);
 884                 d+=n;
 885
 886                 s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_D;
 887                 s->init_num=d-buf;
 888                 s->init_off=0;
 889                 }
 890         /* if (s->state == SSL2_ST_SEND_CLIENT_CERTIFICATE_D) */
 891         return(ssl2_do_write(s));
 892         }
 893
 894 static int get_server_verify(SSL *s)
 895         {
 896         unsigned char *p;
 897         int i, n, len;
 898
 899         p=(unsigned char *)s->init_buf->data;
 900         if (s->state == SSL2_ST_GET_SERVER_VERIFY_A)
 901                 {
 902                 i=ssl2_read(s,(char *)&(p[s->init_num]),1-s->init_num);
 903                 if (i < (1-s->init_num))
 904                         return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i));
 905                 s->init_num += i;
 906
 907                 s->state= SSL2_ST_GET_SERVER_VERIFY_B;
 908                 if (*p != SSL2_MT_SERVER_VERIFY)
 909                         {
 910                         if (p[0] != SSL2_MT_ERROR)
 911                                 {
 912                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 913                                 SSLerr(SSL_F_GET_SERVER_VERIFY,
 914                                         SSL_R_READ_WRONG_PACKET_TYPE);
 915                                 }
 916                         else
 917                                 {
 918                                 SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_PEER_ERROR);
 919                                 /* try to read the error message */
 920                                 i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num);
 921                                 return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i);
 922                                 }
 923                         return(-1);
 924                         }
 925                 }
 926
 927         p=(unsigned char *)s->init_buf->data;
 928         len = 1 + s->s2->challenge_length;
 929         n =  len - s->init_num;
 930         i = ssl2_read(s,(char *)&(p[s->init_num]),n);
 931         if (i < n)
 932                 return(ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i));
 933         if (s->msg_callback)
 934                 s->msg_callback(0, s->version, 0, p, len, s, s->msg_callback_arg); /* SERVER-VERIFY */
 935         p += 1;
 936
 937         if (memcmp(p,s->s2->challenge,s->s2->challenge_length) != 0)
 938                 {
 939                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 940                 SSLerr(SSL_F_GET_SERVER_VERIFY,SSL_R_CHALLENGE_IS_DIFFERENT);
 941                 return(-1);
 942                 }
 943         return(1);
 944         }
 945
 946 static int get_server_finished(SSL *s)
 947         {
 948         unsigned char *buf;
 949         unsigned char *p;
 950         int i, n, len;
 951
 952         buf=(unsigned char *)s->init_buf->data;
 953         p=buf;
 954         if (s->state == SSL2_ST_GET_SERVER_FINISHED_A)
 955                 {
 956                 i=ssl2_read(s,(char *)&(buf[s->init_num]),1-s->init_num);
 957                 if (i < (1-s->init_num))
 958                         return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i));
 959                 s->init_num += i;
 960
 961                 if (*p == SSL2_MT_REQUEST_CERTIFICATE)
 962                         {
 963                         s->state=SSL2_ST_SEND_CLIENT_CERTIFICATE_A;
 964                         return(1);
 965                         }
 966                 else if (*p != SSL2_MT_SERVER_FINISHED)
 967                         {
 968                         if (p[0] != SSL2_MT_ERROR)
 969                                 {
 970                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
 971                                 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_READ_WRONG_PACKET_TYPE);
 972                                 }
 973                         else
 974                                 {
 975                                 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_PEER_ERROR);
 976                                 /* try to read the error message */
 977                                 i=ssl2_read(s,(char *)&(p[s->init_num]),3-s->init_num);
 978                                 return ssl2_part_read(s,SSL_F_GET_SERVER_VERIFY,i);
 979                                 }
 980                         return(-1);
 981                         }
 982                 s->state=SSL2_ST_GET_SERVER_FINISHED_B;
 983                 }
 984
 985         len = 1 + SSL2_SSL_SESSION_ID_LENGTH;
 986         n = len - s->init_num;
 987         i = ssl2_read(s,(char *)&(buf[s->init_num]), n);
 988         if (i < n) /* XXX could be shorter than SSL2_SSL_SESSION_ID_LENGTH, that's the maximum */
 989                 return(ssl2_part_read(s,SSL_F_GET_SERVER_FINISHED,i));
 990         s->init_num += i;
 991         if (s->msg_callback)
 992                 s->msg_callback(0, s->version, 0, buf, (size_t)s->init_num, s, s->msg_callback_arg); /* SERVER-FINISHED */
 993
 994         if (!s->hit) /* new session */
 995                 {
 996                 /* new session-id */
 997                 /* Make sure we were not trying to re-use an old SSL_SESSION
 998                  * or bad things can happen */
 999                 /* ZZZZZZZZZZZZZ */
1000                 s->session->session_id_length=SSL2_SSL_SESSION_ID_LENGTH;
1001                 memcpy(s->session->session_id,p+1,SSL2_SSL_SESSION_ID_LENGTH);
1002                 }
1003         else
1004                 {
1005                 if (!(s->options & SSL_OP_MICROSOFT_SESS_ID_BUG))
1006                         {
1007                         if ((s->session->session_id_length > sizeof s->session->session_id)
1008                             || (0 != memcmp(buf + 1, s->session->session_id,
1009                                             (unsigned int)s->session->session_id_length)))
1010                                 {
1011                                 ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
1012                                 SSLerr(SSL_F_GET_SERVER_FINISHED,SSL_R_SSL_SESSION_ID_IS_DIFFERENT);
1013                                 return(-1);
1014                                 }
1015                         }
1016                 }
1017         s->state = SSL_ST_OK;
1018         return(1);
1019         }
1020
1021 /* loads in the certificate from the server */
1022 int ssl2_set_certificate(SSL *s, int type, int len, const unsigned char *data)
1023         {
1024         STACK_OF(X509) *sk=NULL;
1025         EVP_PKEY *pkey=NULL;
1026         SESS_CERT *sc=NULL;
1027         int i;
1028         X509 *x509=NULL;
1029         int ret=0;
1030
1031         x509=d2i_X509(NULL,&data,(long)len);
1032         if (x509 == NULL)
1033                 {
1034                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_X509_LIB);
1035                 goto err;
1036                 }
1037
1038         if ((sk=sk_X509_new_null()) == NULL || !sk_X509_push(sk,x509))
1039                 {
1040                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1041                 goto err;
1042                 }
1043
1044         i=ssl_verify_cert_chain(s,sk);
1045
1046         if ((s->verify_mode != SSL_VERIFY_NONE) && (!i))
1047                 {
1048                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1049                 goto err;
1050                 }
1051         ERR_clear_error(); /* but we keep s->verify_result */
1052         s->session->verify_result = s->verify_result;
1053
1054         /* server's cert for this session */
1055         sc=ssl_sess_cert_new();
1056         if (sc == NULL)
1057                 {
1058                 ret= -1;
1059                 goto err;
1060                 }
1061         if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1062         s->session->sess_cert=sc;
1063
1064         sc->peer_pkeys[SSL_PKEY_RSA_ENC].x509=x509;
1065         sc->peer_key= &(sc->peer_pkeys[SSL_PKEY_RSA_ENC]);
1066
1067         pkey=X509_get_pubkey(x509);
1068         x509=NULL;
1069         if (pkey == NULL)
1070                 {
1071                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_UNABLE_TO_EXTRACT_PUBLIC_KEY);
1072                 goto err;
1073                 }
1074         if (pkey->type != EVP_PKEY_RSA)
1075                 {
1076                 SSLerr(SSL_F_SSL2_SET_CERTIFICATE,SSL_R_PUBLIC_KEY_NOT_RSA);
1077                 goto err;
1078                 }
1079
1080         if (!ssl_set_peer_cert_type(sc,SSL2_CT_X509_CERTIFICATE))
1081                 goto err;
1082         ret=1;
1083 err:
1084         sk_X509_free(sk);
1085         X509_free(x509);
1086         EVP_PKEY_free(pkey);
1087         return(ret);
1088         }
1089
1090 static int ssl_rsa_public_encrypt(SESS_CERT *sc, int len, unsigned char *from,
1091              unsigned char *to, int padding)
1092         {
1093         EVP_PKEY *pkey=NULL;
1094         int i= -1;
1095
1096         if ((sc == NULL) || (sc->peer_key->x509 == NULL) ||
1097                 ((pkey=X509_get_pubkey(sc->peer_key->x509)) == NULL))
1098                 {
1099                 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_NO_PUBLICKEY);
1100                 return(-1);
1101                 }
1102         if (pkey->type != EVP_PKEY_RSA)
1103                 {
1104                 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,SSL_R_PUBLIC_KEY_IS_NOT_RSA);
1105                 goto end;
1106                 }
1107
1108         /* we have the public key */
1109         i=RSA_public_encrypt(len,from,to,pkey->pkey.rsa,padding);
1110         if (i < 0)
1111                 SSLerr(SSL_F_SSL_RSA_PUBLIC_ENCRYPT,ERR_R_RSA_LIB);
1112 end:
1113         EVP_PKEY_free(pkey);
1114         return(i);
1115         }
1116 #else /* !OPENSSL_NO_SSL2 */
1117
1118 # if PEDANTIC
1119 static void *dummy=&dummy;
1120 # endif
1121
1122 #endif