2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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 * ====================================================================
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).
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
114 * Portions of the attached software ("Contribution") are developed by
115 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
117 * The Contribution is licensed pursuant to the OpenSSL open source
118 * license provided above.
120 * ECC cipher suite support in OpenSSL originally written by
121 * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
124 /* ====================================================================
125 * Copyright 2005 Nokia. All rights reserved.
127 * The portions of the attached software ("Contribution") is developed by
128 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
131 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
132 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
133 * support (see RFC 4279) to OpenSSL.
135 * No patent licenses or other rights except those expressly stated in
136 * the OpenSSL open source license shall be deemed granted or received
137 * expressly, by implication, estoppel, or otherwise.
139 * No assurances are provided by Nokia that the Contribution does not
140 * infringe the patent or other intellectual property rights of any third
141 * party or that the license provides you with all the necessary rights
142 * to make use of the Contribution.
144 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
145 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
146 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
147 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
152 #include "ssl_locl.h"
153 #include "kssl_lcl.h"
154 #include <openssl/buffer.h>
155 #include <openssl/rand.h>
156 #include <openssl/objects.h>
157 #include <openssl/evp.h>
158 #include <openssl/md5.h>
159 #ifndef OPENSSL_NO_DH
160 #include <openssl/dh.h>
162 #include <openssl/bn.h>
163 #ifndef OPENSSL_NO_ENGINE
164 #include <openssl/engine.h>
167 static const SSL_METHOD *ssl3_get_client_method(int ver);
168 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
170 static const SSL_METHOD *ssl3_get_client_method(int ver)
172 if (ver == SSL3_VERSION)
173 return(SSLv3_client_method());
178 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
179 ssl_undefined_function,
181 ssl3_get_client_method)
183 int ssl3_connect(SSL *s)
186 unsigned long Time=(unsigned long)time(NULL);
188 void (*cb)(const SSL *ssl,int type,int val)=NULL;
190 int new_state,state,skip=0;
192 RAND_add(&Time,sizeof(Time),0);
196 if (s->info_callback != NULL)
198 else if (s->ctx->info_callback != NULL)
199 cb=s->ctx->info_callback;
202 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
210 case SSL_ST_RENEGOTIATE:
212 s->state=SSL_ST_CONNECT;
213 s->ctx->stats.sess_connect_renegotiate++;
217 case SSL_ST_BEFORE|SSL_ST_CONNECT:
218 case SSL_ST_OK|SSL_ST_CONNECT:
221 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
223 if ((s->version & 0xff00 ) != 0x0300)
225 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
230 /* s->version=SSL3_VERSION; */
231 s->type=SSL_ST_CONNECT;
233 if (s->init_buf == NULL)
235 if ((buf=BUF_MEM_new()) == NULL)
240 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
249 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
251 /* setup buffing BIO */
252 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
254 /* don't push the buffering BIO quite yet */
256 ssl3_init_finished_mac(s);
258 s->state=SSL3_ST_CW_CLNT_HELLO_A;
259 s->ctx->stats.sess_connect++;
263 case SSL3_ST_CW_CLNT_HELLO_A:
264 case SSL3_ST_CW_CLNT_HELLO_B:
267 ret=ssl3_client_hello(s);
268 if (ret <= 0) goto end;
269 s->state=SSL3_ST_CR_SRVR_HELLO_A;
272 /* turn on buffering for the next lot of output */
273 if (s->bbio != s->wbio)
274 s->wbio=BIO_push(s->bbio,s->wbio);
278 case SSL3_ST_CR_SRVR_HELLO_A:
279 case SSL3_ST_CR_SRVR_HELLO_B:
280 ret=ssl3_get_server_hello(s);
281 if (ret <= 0) goto end;
284 s->state=SSL3_ST_CR_FINISHED_A;
286 s->state=SSL3_ST_CR_CERT_A;
290 case SSL3_ST_CR_CERT_A:
291 case SSL3_ST_CR_CERT_B:
292 #ifndef OPENSSL_NO_TLSEXT
293 ret=ssl3_check_finished(s);
294 if (ret <= 0) goto end;
298 if (s->tlsext_ticket_expected)
299 s->state=SSL3_ST_CR_SESSION_TICKET_A;
301 s->state=SSL3_ST_CR_FINISHED_A;
306 /* Check if it is anon DH/ECDH */
308 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
309 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
311 ret=ssl3_get_server_certificate(s);
312 if (ret <= 0) goto end;
313 #ifndef OPENSSL_NO_TLSEXT
314 if (s->tlsext_status_expected)
315 s->state=SSL3_ST_CR_CERT_STATUS_A;
317 s->state=SSL3_ST_CR_KEY_EXCH_A;
322 s->state=SSL3_ST_CR_KEY_EXCH_A;
329 s->state=SSL3_ST_CR_KEY_EXCH_A;
334 case SSL3_ST_CR_KEY_EXCH_A:
335 case SSL3_ST_CR_KEY_EXCH_B:
336 ret=ssl3_get_key_exchange(s);
337 if (ret <= 0) goto end;
338 s->state=SSL3_ST_CR_CERT_REQ_A;
341 /* at this point we check that we have the
342 * required stuff from the server */
343 if (!ssl3_check_cert_and_algorithm(s))
350 case SSL3_ST_CR_CERT_REQ_A:
351 case SSL3_ST_CR_CERT_REQ_B:
352 ret=ssl3_get_certificate_request(s);
353 if (ret <= 0) goto end;
354 s->state=SSL3_ST_CR_SRVR_DONE_A;
358 case SSL3_ST_CR_SRVR_DONE_A:
359 case SSL3_ST_CR_SRVR_DONE_B:
360 ret=ssl3_get_server_done(s);
361 if (ret <= 0) goto end;
362 if (s->s3->tmp.cert_req)
363 s->state=SSL3_ST_CW_CERT_A;
365 s->state=SSL3_ST_CW_KEY_EXCH_A;
370 case SSL3_ST_CW_CERT_A:
371 case SSL3_ST_CW_CERT_B:
372 case SSL3_ST_CW_CERT_C:
373 case SSL3_ST_CW_CERT_D:
374 ret=ssl3_send_client_certificate(s);
375 if (ret <= 0) goto end;
376 s->state=SSL3_ST_CW_KEY_EXCH_A;
380 case SSL3_ST_CW_KEY_EXCH_A:
381 case SSL3_ST_CW_KEY_EXCH_B:
382 ret=ssl3_send_client_key_exchange(s);
383 if (ret <= 0) goto end;
384 /* EAY EAY EAY need to check for DH fix cert
386 /* For TLS, cert_req is set to 2, so a cert chain
387 * of nothing is sent, but no verify packet is sent */
388 /* XXX: For now, we do not support client
389 * authentication in ECDH cipher suites with
390 * ECDH (rather than ECDSA) certificates.
391 * We need to skip the certificate verify
392 * message when client's ECDH public key is sent
393 * inside the client certificate.
395 if (s->s3->tmp.cert_req == 1)
397 s->state=SSL3_ST_CW_CERT_VRFY_A;
401 s->state=SSL3_ST_CW_CHANGE_A;
402 s->s3->change_cipher_spec=0;
404 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
406 s->state=SSL3_ST_CW_CHANGE_A;
407 s->s3->change_cipher_spec=0;
413 case SSL3_ST_CW_CERT_VRFY_A:
414 case SSL3_ST_CW_CERT_VRFY_B:
415 ret=ssl3_send_client_verify(s);
416 if (ret <= 0) goto end;
417 s->state=SSL3_ST_CW_CHANGE_A;
419 s->s3->change_cipher_spec=0;
422 case SSL3_ST_CW_CHANGE_A:
423 case SSL3_ST_CW_CHANGE_B:
424 ret=ssl3_send_change_cipher_spec(s,
425 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
426 if (ret <= 0) goto end;
427 s->state=SSL3_ST_CW_FINISHED_A;
430 s->session->cipher=s->s3->tmp.new_cipher;
431 #ifdef OPENSSL_NO_COMP
432 s->session->compress_meth=0;
434 if (s->s3->tmp.new_compression == NULL)
435 s->session->compress_meth=0;
437 s->session->compress_meth=
438 s->s3->tmp.new_compression->id;
440 if (!s->method->ssl3_enc->setup_key_block(s))
446 if (!s->method->ssl3_enc->change_cipher_state(s,
447 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
455 case SSL3_ST_CW_FINISHED_A:
456 case SSL3_ST_CW_FINISHED_B:
457 ret=ssl3_send_finished(s,
458 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
459 s->method->ssl3_enc->client_finished_label,
460 s->method->ssl3_enc->client_finished_label_len);
461 if (ret <= 0) goto end;
462 s->state=SSL3_ST_CW_FLUSH;
465 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
468 s->s3->tmp.next_state=SSL_ST_OK;
469 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
472 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
473 s->s3->delay_buf_pop_ret=0;
478 #ifndef OPENSSL_NO_TLSEXT
479 /* Allow NewSessionTicket if ticket expected */
480 if (s->tlsext_ticket_expected)
481 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
485 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
490 #ifndef OPENSSL_NO_TLSEXT
491 case SSL3_ST_CR_SESSION_TICKET_A:
492 case SSL3_ST_CR_SESSION_TICKET_B:
493 ret=ssl3_get_new_session_ticket(s);
494 if (ret <= 0) goto end;
495 s->state=SSL3_ST_CR_FINISHED_A;
499 case SSL3_ST_CR_CERT_STATUS_A:
500 case SSL3_ST_CR_CERT_STATUS_B:
501 ret=ssl3_get_cert_status(s);
502 if (ret <= 0) goto end;
503 s->state=SSL3_ST_CR_KEY_EXCH_A;
508 case SSL3_ST_CR_FINISHED_A:
509 case SSL3_ST_CR_FINISHED_B:
511 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
512 SSL3_ST_CR_FINISHED_B);
513 if (ret <= 0) goto end;
516 s->state=SSL3_ST_CW_CHANGE_A;
522 case SSL3_ST_CW_FLUSH:
523 /* number of bytes to be flushed */
524 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
527 s->rwstate=SSL_WRITING;
528 num1=BIO_flush(s->wbio);
529 if (num1 <= 0) { ret= -1; goto end; }
530 s->rwstate=SSL_NOTHING;
533 s->state=s->s3->tmp.next_state;
537 /* clean a few things up */
538 ssl3_cleanup_key_block(s);
540 if (s->init_buf != NULL)
542 BUF_MEM_free(s->init_buf);
546 /* If we are not 'joining' the last two packets,
547 * remove the buffering now */
548 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
549 ssl_free_wbio_buffer(s);
550 /* else do it later in ssl3_write */
555 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
556 if (s->hit) s->ctx->stats.sess_hit++;
560 s->handshake_func=ssl3_connect;
561 s->ctx->stats.sess_connect_good++;
563 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
569 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
575 /* did we do anything */
576 if (!s->s3->tmp.reuse_message && !skip)
580 if ((ret=BIO_flush(s->wbio)) <= 0)
584 if ((cb != NULL) && (s->state != state))
588 cb(s,SSL_CB_CONNECT_LOOP,1);
599 cb(s,SSL_CB_CONNECT_EXIT,ret);
604 int ssl3_client_hello(SSL *s)
609 unsigned long Time,l;
610 #ifndef OPENSSL_NO_COMP
615 buf=(unsigned char *)s->init_buf->data;
616 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
618 SSL_SESSION *sess = s->session;
619 if ((sess == NULL) ||
620 (sess->ssl_version != s->version) ||
621 #ifdef OPENSSL_NO_TLSEXT
622 !sess->session_id_length ||
624 (!sess->session_id_length && !sess->tlsext_tick) ||
626 (sess->not_resumable))
628 if (!ssl_get_new_session(s,0))
631 /* else use the pre-loaded session */
633 p=s->s3->client_random;
634 Time=(unsigned long)time(NULL); /* Time */
636 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
639 /* Do the message type and length last */
642 *(p++)=s->version>>8;
643 *(p++)=s->version&0xff;
644 s->client_version=s->version;
647 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
654 i=s->session->session_id_length;
658 if (i > (int)sizeof(s->session->session_id))
660 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
663 memcpy(p,s->session->session_id,i);
667 /* Ciphers supported */
668 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
671 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
678 #ifdef OPENSSL_NO_COMP
682 if ((s->options & SSL_OP_NO_COMPRESSION)
683 || !s->ctx->comp_methods)
686 j=sk_SSL_COMP_num(s->ctx->comp_methods);
690 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
694 *(p++)=0; /* Add the NULL method */
696 #ifndef OPENSSL_NO_TLSEXT
698 if (ssl_prepare_clienthello_tlsext(s) <= 0)
700 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
703 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
705 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
712 *(d++)=SSL3_MT_CLIENT_HELLO;
715 s->state=SSL3_ST_CW_CLNT_HELLO_B;
716 /* number of bytes to write */
721 /* SSL3_ST_CW_CLNT_HELLO_B */
722 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
727 int ssl3_get_server_hello(SSL *s)
729 STACK_OF(SSL_CIPHER) *sk;
735 #ifndef OPENSSL_NO_COMP
739 n=s->method->ssl_get_message(s,
740 SSL3_ST_CR_SRVR_HELLO_A,
741 SSL3_ST_CR_SRVR_HELLO_B,
746 if (!ok) return((int)n);
748 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
750 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
752 if ( s->d1->send_cookie == 0)
754 s->s3->tmp.reuse_message = 1;
757 else /* already sent a cookie */
759 al=SSL_AD_UNEXPECTED_MESSAGE;
760 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
766 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
768 al=SSL_AD_UNEXPECTED_MESSAGE;
769 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
773 d=p=(unsigned char *)s->init_msg;
775 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
777 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
778 s->version=(s->version&0xff00)|p[1];
779 al=SSL_AD_PROTOCOL_VERSION;
784 /* load the server hello data */
785 /* load the server random */
786 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
789 /* get the session-id */
792 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
794 al=SSL_AD_ILLEGAL_PARAMETER;
795 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
799 #ifndef OPENSSL_NO_TLSEXT
800 /* check if we want to resume the session based on external pre-shared secret */
801 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
803 SSL_CIPHER *pref_cipher=NULL;
804 s->session->master_key_length=sizeof(s->session->master_key);
805 if (s->tls_session_secret_cb(s, s->session->master_key,
806 &s->session->master_key_length,
808 s->tls_session_secret_cb_arg))
810 s->session->cipher = pref_cipher ?
811 pref_cipher : ssl_get_cipher_by_char(s, p+j);
814 #endif /* OPENSSL_NO_TLSEXT */
816 if (j != 0 && j == s->session->session_id_length
817 && memcmp(p,s->session->session_id,j) == 0)
819 if(s->sid_ctx_length != s->session->sid_ctx_length
820 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
822 /* actually a client application bug */
823 al=SSL_AD_ILLEGAL_PARAMETER;
824 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
829 else /* a miss or crap from the other end */
831 /* If we were trying for session-id reuse, make a new
832 * SSL_SESSION so we don't stuff up other people */
834 if (s->session->session_id_length > 0)
836 if (!ssl_get_new_session(s,0))
838 al=SSL_AD_INTERNAL_ERROR;
842 s->session->session_id_length=j;
843 memcpy(s->session->session_id,p,j); /* j could be 0 */
846 c=ssl_get_cipher_by_char(s,p);
850 al=SSL_AD_ILLEGAL_PARAMETER;
851 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
854 p+=ssl_put_cipher_by_char(s,NULL,NULL);
856 sk=ssl_get_ciphers_by_id(s);
857 i=sk_SSL_CIPHER_find(sk,c);
860 /* we did not say we would use this cipher */
861 al=SSL_AD_ILLEGAL_PARAMETER;
862 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
866 /* Depending on the session caching (internal/external), the cipher
867 and/or cipher_id values may not be set. Make sure that
868 cipher_id is set and use it for comparison. */
869 if (s->session->cipher)
870 s->session->cipher_id = s->session->cipher->id;
871 if (s->hit && (s->session->cipher_id != c->id))
874 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
876 al=SSL_AD_ILLEGAL_PARAMETER;
877 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
881 s->s3->tmp.new_cipher=c;
882 if (!ssl3_digest_cached_records(s))
885 /* lets get the compression algorithm */
887 #ifdef OPENSSL_NO_COMP
890 al=SSL_AD_ILLEGAL_PARAMETER;
891 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
894 /* If compression is disabled we'd better not try to resume a session
897 if (s->session->compress_meth != 0)
899 al=SSL_AD_INTERNAL_ERROR;
900 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
905 if (s->hit && j != s->session->compress_meth)
907 al=SSL_AD_ILLEGAL_PARAMETER;
908 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
913 else if (s->options & SSL_OP_NO_COMPRESSION)
915 al=SSL_AD_ILLEGAL_PARAMETER;
916 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
920 comp=ssl3_comp_find(s->ctx->comp_methods,j);
922 if ((j != 0) && (comp == NULL))
924 al=SSL_AD_ILLEGAL_PARAMETER;
925 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
930 s->s3->tmp.new_compression=comp;
934 #ifndef OPENSSL_NO_TLSEXT
936 if (s->version >= SSL3_VERSION)
938 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
940 /* 'al' set by ssl_parse_serverhello_tlsext */
941 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
944 if (ssl_check_serverhello_tlsext(s) <= 0)
946 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
954 /* wrong packet length */
955 al=SSL_AD_DECODE_ERROR;
956 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
962 ssl3_send_alert(s,SSL3_AL_FATAL,al);
967 int ssl3_get_server_certificate(SSL *s)
970 unsigned long n,nc,llen,l;
972 const unsigned char *q,*p;
974 STACK_OF(X509) *sk=NULL;
977 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
979 n=s->method->ssl_get_message(s,
986 if (!ok) return((int)n);
988 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
990 s->s3->tmp.reuse_message=1;
994 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
996 al=SSL_AD_UNEXPECTED_MESSAGE;
997 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1000 p=d=(unsigned char *)s->init_msg;
1002 if ((sk=sk_X509_new_null()) == NULL)
1004 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1011 al=SSL_AD_DECODE_ERROR;
1012 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1015 for (nc=0; nc<llen; )
1018 if ((l+nc+3) > llen)
1020 al=SSL_AD_DECODE_ERROR;
1021 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1026 x=d2i_X509(NULL,&q,l);
1029 al=SSL_AD_BAD_CERTIFICATE;
1030 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1035 al=SSL_AD_DECODE_ERROR;
1036 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1039 if (!sk_X509_push(sk,x))
1041 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1049 i=ssl_verify_cert_chain(s,sk);
1050 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1051 #ifndef OPENSSL_NO_KRB5
1052 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1053 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1054 #endif /* OPENSSL_NO_KRB5 */
1057 al=ssl_verify_alarm_type(s->verify_result);
1058 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1061 ERR_clear_error(); /* but we keep s->verify_result */
1063 sc=ssl_sess_cert_new();
1064 if (sc == NULL) goto err;
1066 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1067 s->session->sess_cert=sc;
1070 /* Inconsistency alert: cert_chain does include the peer's
1071 * certificate, which we don't include in s3_srvr.c */
1072 x=sk_X509_value(sk,0);
1074 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1076 pkey=X509_get_pubkey(x);
1078 /* VRS: allow null cert if auth == KRB5 */
1079 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1080 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1084 printf("pkey,x = %p, %p\n", pkey,x);
1085 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1086 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1087 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1088 #endif /* KSSL_DEBUG */
1090 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1094 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1095 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1099 i=ssl_cert_type(x,pkey);
1100 if (need_cert && i < 0)
1104 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1105 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1111 sc->peer_cert_type=i;
1112 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1113 /* Why would the following ever happen?
1114 * We just created sc a couple of lines ago. */
1115 if (sc->peer_pkeys[i].x509 != NULL)
1116 X509_free(sc->peer_pkeys[i].x509);
1117 sc->peer_pkeys[i].x509=x;
1118 sc->peer_key= &(sc->peer_pkeys[i]);
1120 if (s->session->peer != NULL)
1121 X509_free(s->session->peer);
1122 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1127 sc->peer_cert_type=i;
1130 if (s->session->peer != NULL)
1131 X509_free(s->session->peer);
1132 s->session->peer=NULL;
1134 s->session->verify_result = s->verify_result;
1142 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1145 EVP_PKEY_free(pkey);
1147 sk_X509_pop_free(sk,X509_free);
1151 int ssl3_get_key_exchange(SSL *s)
1153 #ifndef OPENSSL_NO_RSA
1154 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1157 unsigned char *param,*p;
1158 int al,i,j,param_len,ok;
1160 EVP_PKEY *pkey=NULL;
1161 #ifndef OPENSSL_NO_RSA
1164 #ifndef OPENSSL_NO_DH
1167 #ifndef OPENSSL_NO_ECDH
1168 EC_KEY *ecdh = NULL;
1169 BN_CTX *bn_ctx = NULL;
1170 EC_POINT *srvr_ecpoint = NULL;
1172 int encoded_pt_len = 0;
1175 /* use same message size as in ssl3_get_certificate_request()
1176 * as ServerKeyExchange message may be skipped */
1177 n=s->method->ssl_get_message(s,
1178 SSL3_ST_CR_KEY_EXCH_A,
1179 SSL3_ST_CR_KEY_EXCH_B,
1183 if (!ok) return((int)n);
1185 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1187 #ifndef OPENSSL_NO_PSK
1188 /* In plain PSK ciphersuite, ServerKeyExchange can be
1189 omitted if no identity hint is sent. Set
1190 session->sess_cert anyway to avoid problems
1192 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1194 s->session->sess_cert=ssl_sess_cert_new();
1195 if (s->ctx->psk_identity_hint)
1196 OPENSSL_free(s->ctx->psk_identity_hint);
1197 s->ctx->psk_identity_hint = NULL;
1200 s->s3->tmp.reuse_message=1;
1204 param=p=(unsigned char *)s->init_msg;
1205 if (s->session->sess_cert != NULL)
1207 #ifndef OPENSSL_NO_RSA
1208 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1210 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1211 s->session->sess_cert->peer_rsa_tmp=NULL;
1214 #ifndef OPENSSL_NO_DH
1215 if (s->session->sess_cert->peer_dh_tmp)
1217 DH_free(s->session->sess_cert->peer_dh_tmp);
1218 s->session->sess_cert->peer_dh_tmp=NULL;
1221 #ifndef OPENSSL_NO_ECDH
1222 if (s->session->sess_cert->peer_ecdh_tmp)
1224 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1225 s->session->sess_cert->peer_ecdh_tmp=NULL;
1231 s->session->sess_cert=ssl_sess_cert_new();
1235 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1236 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1237 EVP_MD_CTX_init(&md_ctx);
1239 #ifndef OPENSSL_NO_PSK
1240 if (alg_k & SSL_kPSK)
1242 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1244 al=SSL_AD_HANDSHAKE_FAILURE;
1247 /* Store PSK identity hint for later use, hint is used
1248 * in ssl3_send_client_key_exchange. Assume that the
1249 * maximum length of a PSK identity hint can be as
1250 * long as the maximum length of a PSK identity. */
1251 if (i > PSK_MAX_IDENTITY_LEN)
1253 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1254 SSL_R_DATA_LENGTH_TOO_LONG);
1259 al=SSL_AD_DECODE_ERROR;
1260 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1261 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1264 /* If received PSK identity hint contains NULL
1265 * characters, the hint is truncated from the first
1266 * NULL. p may not be ending with NULL, so create a
1267 * NULL-terminated string. */
1268 memcpy(tmp_id_hint, p, i);
1269 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1270 if (s->ctx->psk_identity_hint != NULL)
1271 OPENSSL_free(s->ctx->psk_identity_hint);
1272 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1273 if (s->ctx->psk_identity_hint == NULL)
1275 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1283 #endif /* !OPENSSL_NO_PSK */
1284 #ifndef OPENSSL_NO_RSA
1285 if (alg_k & SSL_kRSA)
1287 if ((rsa=RSA_new()) == NULL)
1289 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1296 al=SSL_AD_DECODE_ERROR;
1297 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1300 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1302 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1311 al=SSL_AD_DECODE_ERROR;
1312 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1315 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1317 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1323 /* this should be because we are using an export cipher */
1324 if (alg_a & SSL_aRSA)
1325 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1328 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1331 s->session->sess_cert->peer_rsa_tmp=rsa;
1334 #else /* OPENSSL_NO_RSA */
1338 #ifndef OPENSSL_NO_DH
1339 else if (alg_k & SSL_kEDH)
1341 if ((dh=DH_new()) == NULL)
1343 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1350 al=SSL_AD_DECODE_ERROR;
1351 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1354 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1356 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1365 al=SSL_AD_DECODE_ERROR;
1366 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1369 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1371 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1380 al=SSL_AD_DECODE_ERROR;
1381 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1384 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1386 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1392 #ifndef OPENSSL_NO_RSA
1393 if (alg_a & SSL_aRSA)
1394 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1399 #ifndef OPENSSL_NO_DSA
1400 else if (alg_a & SSL_aDSS)
1401 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1403 /* else anonymous DH, so no certificate or pkey. */
1405 s->session->sess_cert->peer_dh_tmp=dh;
1408 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1410 al=SSL_AD_ILLEGAL_PARAMETER;
1411 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1414 #endif /* !OPENSSL_NO_DH */
1416 #ifndef OPENSSL_NO_ECDH
1417 else if (alg_k & SSL_kEECDH)
1420 const EC_GROUP *group;
1422 if ((ecdh=EC_KEY_new()) == NULL)
1424 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1428 /* Extract elliptic curve parameters and the
1429 * server's ephemeral ECDH public key.
1430 * Keep accumulating lengths of various components in
1431 * param_len and make sure it never exceeds n.
1434 /* XXX: For now we only support named (not generic) curves
1435 * and the ECParameters in this case is just three bytes.
1438 if ((param_len > n) ||
1439 (*p != NAMED_CURVE_TYPE) ||
1440 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1442 al=SSL_AD_INTERNAL_ERROR;
1443 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1447 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1450 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1453 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1455 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1458 EC_GROUP_free(ngroup);
1460 group = EC_KEY_get0_group(ecdh);
1462 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1463 (EC_GROUP_get_degree(group) > 163))
1465 al=SSL_AD_EXPORT_RESTRICTION;
1466 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1472 /* Next, get the encoded ECPoint */
1473 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1474 ((bn_ctx = BN_CTX_new()) == NULL))
1476 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1480 encoded_pt_len = *p; /* length of encoded point */
1482 param_len += (1 + encoded_pt_len);
1483 if ((param_len > n) ||
1484 (EC_POINT_oct2point(group, srvr_ecpoint,
1485 p, encoded_pt_len, bn_ctx) == 0))
1487 al=SSL_AD_DECODE_ERROR;
1488 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1495 /* The ECC/TLS specification does not mention
1496 * the use of DSA to sign ECParameters in the server
1497 * key exchange message. We do support RSA and ECDSA.
1500 #ifndef OPENSSL_NO_RSA
1501 else if (alg_a & SSL_aRSA)
1502 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1504 #ifndef OPENSSL_NO_ECDSA
1505 else if (alg_a & SSL_aECDSA)
1506 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1508 /* else anonymous ECDH, so no certificate or pkey. */
1509 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1510 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1512 BN_CTX_free(bn_ctx);
1513 EC_POINT_free(srvr_ecpoint);
1514 srvr_ecpoint = NULL;
1518 al=SSL_AD_UNEXPECTED_MESSAGE;
1519 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1522 #endif /* !OPENSSL_NO_ECDH */
1525 /* p points to the next byte, there are 'n' bytes left */
1527 /* if it was signed, check the signature */
1532 j=EVP_PKEY_size(pkey);
1534 if ((i != n) || (n > j) || (n <= 0))
1536 /* wrong packet length */
1537 al=SSL_AD_DECODE_ERROR;
1538 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1542 #ifndef OPENSSL_NO_RSA
1543 if (pkey->type == EVP_PKEY_RSA)
1549 for (num=2; num > 0; num--)
1551 EVP_DigestInit_ex(&md_ctx,(num == 2)
1552 ?s->ctx->md5:s->ctx->sha1, NULL);
1553 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1554 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1555 EVP_DigestUpdate(&md_ctx,param,param_len);
1556 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1560 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1564 al=SSL_AD_DECRYPT_ERROR;
1565 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1571 al=SSL_AD_DECRYPT_ERROR;
1572 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1578 #ifndef OPENSSL_NO_DSA
1579 if (pkey->type == EVP_PKEY_DSA)
1582 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1583 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1584 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1585 EVP_VerifyUpdate(&md_ctx,param,param_len);
1586 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1589 al=SSL_AD_DECRYPT_ERROR;
1590 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1596 #ifndef OPENSSL_NO_ECDSA
1597 if (pkey->type == EVP_PKEY_EC)
1599 /* let's do ECDSA */
1600 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1601 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1602 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1603 EVP_VerifyUpdate(&md_ctx,param,param_len);
1604 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1607 al=SSL_AD_DECRYPT_ERROR;
1608 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1615 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1621 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1622 /* aNULL or kPSK do not need public keys */
1624 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1627 /* still data left over */
1630 al=SSL_AD_DECODE_ERROR;
1631 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1635 EVP_PKEY_free(pkey);
1636 EVP_MD_CTX_cleanup(&md_ctx);
1639 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1641 EVP_PKEY_free(pkey);
1642 #ifndef OPENSSL_NO_RSA
1646 #ifndef OPENSSL_NO_DH
1650 #ifndef OPENSSL_NO_ECDH
1651 BN_CTX_free(bn_ctx);
1652 EC_POINT_free(srvr_ecpoint);
1656 EVP_MD_CTX_cleanup(&md_ctx);
1660 int ssl3_get_certificate_request(SSL *s)
1663 unsigned long n,nc,l;
1664 unsigned int llen,ctype_num,i;
1666 const unsigned char *p,*q;
1668 STACK_OF(X509_NAME) *ca_sk=NULL;
1670 n=s->method->ssl_get_message(s,
1671 SSL3_ST_CR_CERT_REQ_A,
1672 SSL3_ST_CR_CERT_REQ_B,
1677 if (!ok) return((int)n);
1679 s->s3->tmp.cert_req=0;
1681 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1683 s->s3->tmp.reuse_message=1;
1687 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1689 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1690 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1694 /* TLS does not like anon-DH with client cert */
1695 if (s->version > SSL3_VERSION)
1697 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1699 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1700 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1705 p=d=(unsigned char *)s->init_msg;
1707 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1709 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1713 /* get the certificate types */
1715 if (ctype_num > SSL3_CT_NUMBER)
1716 ctype_num=SSL3_CT_NUMBER;
1717 for (i=0; i<ctype_num; i++)
1718 s->s3->tmp.ctype[i]= p[i];
1721 /* get the CA RDNs */
1726 out=fopen("/tmp/vsign.der","w");
1727 fwrite(p,1,llen,out);
1732 if ((llen+ctype_num+2+1) != n)
1734 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1735 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1739 for (nc=0; nc<llen; )
1742 if ((l+nc+2) > llen)
1744 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1745 goto cont; /* netscape bugs */
1746 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1747 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1753 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1755 /* If netscape tolerance is on, ignore errors */
1756 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1760 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1761 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1768 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1769 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1772 if (!sk_X509_NAME_push(ca_sk,xn))
1774 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1788 /* we should setup a certificate to return.... */
1789 s->s3->tmp.cert_req=1;
1790 s->s3->tmp.ctype_num=ctype_num;
1791 if (s->s3->tmp.ca_names != NULL)
1792 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1793 s->s3->tmp.ca_names=ca_sk;
1798 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1802 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1804 return(X509_NAME_cmp(*a,*b));
1806 #ifndef OPENSSL_NO_TLSEXT
1807 int ssl3_get_new_session_ticket(SSL *s)
1809 int ok,al,ret=0, ticklen;
1811 const unsigned char *p;
1814 n=s->method->ssl_get_message(s,
1815 SSL3_ST_CR_SESSION_TICKET_A,
1816 SSL3_ST_CR_SESSION_TICKET_B,
1824 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1826 s->s3->tmp.reuse_message=1;
1829 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1831 al=SSL_AD_UNEXPECTED_MESSAGE;
1832 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1837 /* need at least ticket_lifetime_hint + ticket length */
1838 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1839 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1843 p=d=(unsigned char *)s->init_msg;
1844 n2l(p, s->session->tlsext_tick_lifetime_hint);
1846 /* ticket_lifetime_hint + ticket_length + ticket */
1847 if (ticklen + 6 != n)
1849 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1850 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1853 if (s->session->tlsext_tick)
1855 OPENSSL_free(s->session->tlsext_tick);
1856 s->session->tlsext_ticklen = 0;
1858 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1859 if (!s->session->tlsext_tick)
1861 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1864 memcpy(s->session->tlsext_tick, p, ticklen);
1865 s->session->tlsext_ticklen = ticklen;
1866 /* There are two ways to detect a resumed ticket sesion.
1867 * One is to set an appropriate session ID and then the server
1868 * must return a match in ServerHello. This allows the normal
1869 * client session ID matching to work and we know much
1870 * earlier that the ticket has been accepted.
1872 * The other way is to set zero length session ID when the
1873 * ticket is presented and rely on the handshake to determine
1874 * session resumption.
1876 * We choose the former approach because this fits in with
1877 * assumptions elsewhere in OpenSSL. The session ID is set
1878 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
1881 EVP_Digest(p, ticklen,
1882 s->session->session_id, &s->session->session_id_length,
1883 #ifndef OPENSSL_NO_SHA256
1884 EVP_sha256(), NULL);
1891 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1896 int ssl3_get_cert_status(SSL *s)
1899 unsigned long resplen,n;
1900 const unsigned char *p;
1902 n=s->method->ssl_get_message(s,
1903 SSL3_ST_CR_CERT_STATUS_A,
1904 SSL3_ST_CR_CERT_STATUS_B,
1905 SSL3_MT_CERTIFICATE_STATUS,
1909 if (!ok) return((int)n);
1912 /* need at least status type + length */
1913 al = SSL_AD_DECODE_ERROR;
1914 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1917 p = (unsigned char *)s->init_msg;
1918 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1920 al = SSL_AD_DECODE_ERROR;
1921 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
1925 if (resplen + 4 != n)
1927 al = SSL_AD_DECODE_ERROR;
1928 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1931 if (s->tlsext_ocsp_resp)
1932 OPENSSL_free(s->tlsext_ocsp_resp);
1933 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1934 if (!s->tlsext_ocsp_resp)
1936 al = SSL_AD_INTERNAL_ERROR;
1937 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1940 s->tlsext_ocsp_resplen = resplen;
1941 if (s->ctx->tlsext_status_cb)
1944 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1947 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1948 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
1953 al = SSL_AD_INTERNAL_ERROR;
1954 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1960 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1965 int ssl3_get_server_done(SSL *s)
1970 n=s->method->ssl_get_message(s,
1971 SSL3_ST_CR_SRVR_DONE_A,
1972 SSL3_ST_CR_SRVR_DONE_B,
1973 SSL3_MT_SERVER_DONE,
1974 30, /* should be very small, like 0 :-) */
1977 if (!ok) return((int)n);
1980 /* should contain no data */
1981 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1982 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1990 int ssl3_send_client_key_exchange(SSL *s)
1992 unsigned char *p,*d;
1994 unsigned long alg_k;
1995 #ifndef OPENSSL_NO_RSA
1997 EVP_PKEY *pkey=NULL;
1999 #ifndef OPENSSL_NO_KRB5
2001 #endif /* OPENSSL_NO_KRB5 */
2002 #ifndef OPENSSL_NO_ECDH
2003 EC_KEY *clnt_ecdh = NULL;
2004 const EC_POINT *srvr_ecpoint = NULL;
2005 EVP_PKEY *srvr_pub_pkey = NULL;
2006 unsigned char *encodedPoint = NULL;
2007 int encoded_pt_len = 0;
2008 BN_CTX * bn_ctx = NULL;
2011 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2013 d=(unsigned char *)s->init_buf->data;
2016 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2018 /* Fool emacs indentation */
2020 #ifndef OPENSSL_NO_RSA
2021 else if (alg_k & SSL_kRSA)
2024 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2026 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2027 rsa=s->session->sess_cert->peer_rsa_tmp;
2030 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2031 if ((pkey == NULL) ||
2032 (pkey->type != EVP_PKEY_RSA) ||
2033 (pkey->pkey.rsa == NULL))
2035 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2039 EVP_PKEY_free(pkey);
2042 tmp_buf[0]=s->client_version>>8;
2043 tmp_buf[1]=s->client_version&0xff;
2044 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2047 s->session->master_key_length=sizeof tmp_buf;
2050 /* Fix buf for TLS and beyond */
2051 if (s->version > SSL3_VERSION)
2053 n=RSA_public_encrypt(sizeof tmp_buf,
2054 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2056 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2057 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2061 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2065 /* Fix buf for TLS and beyond */
2066 if (s->version > SSL3_VERSION)
2072 s->session->master_key_length=
2073 s->method->ssl3_enc->generate_master_secret(s,
2074 s->session->master_key,
2075 tmp_buf,sizeof tmp_buf);
2076 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2079 #ifndef OPENSSL_NO_KRB5
2080 else if (alg_k & SSL_kKRB5)
2082 krb5_error_code krb5rc;
2083 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2084 /* krb5_data krb5_ap_req; */
2085 krb5_data *enc_ticket;
2086 krb5_data authenticator, *authp = NULL;
2087 EVP_CIPHER_CTX ciph_ctx;
2088 const EVP_CIPHER *enc = NULL;
2089 unsigned char iv[EVP_MAX_IV_LENGTH];
2090 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2091 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2092 + EVP_MAX_IV_LENGTH];
2093 int padl, outl = sizeof(epms);
2095 EVP_CIPHER_CTX_init(&ciph_ctx);
2098 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2100 #endif /* KSSL_DEBUG */
2104 if (KRB5SENDAUTH) authp = &authenticator;
2105 #endif /* KRB5SENDAUTH */
2107 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2109 enc = kssl_map_enc(kssl_ctx->enctype);
2114 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2115 if (krb5rc && kssl_err.text)
2116 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2118 #endif /* KSSL_DEBUG */
2122 ssl3_send_alert(s,SSL3_AL_FATAL,
2123 SSL_AD_HANDSHAKE_FAILURE);
2124 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2129 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2130 ** in place of RFC 2712 KerberosWrapper, as in:
2132 ** Send ticket (copy to *p, set n = length)
2133 ** n = krb5_ap_req.length;
2134 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2135 ** if (krb5_ap_req.data)
2136 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2138 ** Now using real RFC 2712 KerberosWrapper
2139 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2140 ** Note: 2712 "opaque" types are here replaced
2141 ** with a 2-byte length followed by the value.
2143 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2144 ** Where "xx xx" = length bytes. Shown here with
2145 ** optional authenticator omitted.
2148 /* KerberosWrapper.Ticket */
2149 s2n(enc_ticket->length,p);
2150 memcpy(p, enc_ticket->data, enc_ticket->length);
2151 p+= enc_ticket->length;
2152 n = enc_ticket->length + 2;
2154 /* KerberosWrapper.Authenticator */
2155 if (authp && authp->length)
2157 s2n(authp->length,p);
2158 memcpy(p, authp->data, authp->length);
2160 n+= authp->length + 2;
2168 s2n(0,p);/* null authenticator length */
2172 tmp_buf[0]=s->client_version>>8;
2173 tmp_buf[1]=s->client_version&0xff;
2174 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2177 /* 20010420 VRS. Tried it this way; failed.
2178 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2179 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2180 ** kssl_ctx->length);
2181 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2184 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2185 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2187 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2189 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2191 if (outl > (int)sizeof epms)
2193 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2196 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2198 /* KerberosWrapper.EncryptedPreMasterSecret */
2200 memcpy(p, epms, outl);
2204 s->session->master_key_length=
2205 s->method->ssl3_enc->generate_master_secret(s,
2206 s->session->master_key,
2207 tmp_buf, sizeof tmp_buf);
2209 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2210 OPENSSL_cleanse(epms, outl);
2213 #ifndef OPENSSL_NO_DH
2214 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2216 DH *dh_srvr,*dh_clnt;
2218 if (s->session->sess_cert == NULL)
2220 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2221 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2225 if (s->session->sess_cert->peer_dh_tmp != NULL)
2226 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2229 /* we get them from the cert */
2230 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2231 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2235 /* generate a new random key */
2236 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2238 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2241 if (!DH_generate_key(dh_clnt))
2243 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2247 /* use the 'p' output buffer for the DH key, but
2248 * make sure to clear it out afterwards */
2250 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2254 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2258 /* generate master key from the result */
2259 s->session->master_key_length=
2260 s->method->ssl3_enc->generate_master_secret(s,
2261 s->session->master_key,p,n);
2265 /* send off the data */
2266 n=BN_num_bytes(dh_clnt->pub_key);
2268 BN_bn2bin(dh_clnt->pub_key,p);
2273 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2277 #ifndef OPENSSL_NO_ECDH
2278 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2280 const EC_GROUP *srvr_group = NULL;
2282 int ecdh_clnt_cert = 0;
2285 /* Did we send out the client's
2286 * ECDH share for use in premaster
2287 * computation as part of client certificate?
2288 * If so, set ecdh_clnt_cert to 1.
2290 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2292 /* XXX: For now, we do not support client
2293 * authentication using ECDH certificates.
2294 * To add such support, one needs to add
2295 * code that checks for appropriate
2296 * conditions and sets ecdh_clnt_cert to 1.
2297 * For example, the cert have an ECC
2298 * key on the same curve as the server's
2299 * and the key should be authorized for
2302 * One also needs to add code in ssl3_connect
2303 * to skip sending the certificate verify
2306 * if ((s->cert->key->privatekey != NULL) &&
2307 * (s->cert->key->privatekey->type ==
2308 * EVP_PKEY_EC) && ...)
2309 * ecdh_clnt_cert = 1;
2313 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2315 tkey = s->session->sess_cert->peer_ecdh_tmp;
2319 /* Get the Server Public Key from Cert */
2320 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2321 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2322 if ((srvr_pub_pkey == NULL) ||
2323 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2324 (srvr_pub_pkey->pkey.ec == NULL))
2326 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2327 ERR_R_INTERNAL_ERROR);
2331 tkey = srvr_pub_pkey->pkey.ec;
2334 srvr_group = EC_KEY_get0_group(tkey);
2335 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2337 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2339 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2340 ERR_R_INTERNAL_ERROR);
2344 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2346 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2350 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2352 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2357 /* Reuse key info from our certificate
2358 * We only need our private key to perform
2359 * the ECDH computation.
2361 const BIGNUM *priv_key;
2362 tkey = s->cert->key->privatekey->pkey.ec;
2363 priv_key = EC_KEY_get0_private_key(tkey);
2364 if (priv_key == NULL)
2366 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2369 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2371 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2377 /* Generate a new ECDH key pair */
2378 if (!(EC_KEY_generate_key(clnt_ecdh)))
2380 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2385 /* use the 'p' output buffer for the ECDH key, but
2386 * make sure to clear it out afterwards
2389 field_size = EC_GROUP_get_degree(srvr_group);
2390 if (field_size <= 0)
2392 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2396 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2399 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2404 /* generate master key from the result */
2405 s->session->master_key_length = s->method->ssl3_enc \
2406 -> generate_master_secret(s,
2407 s->session->master_key,
2410 memset(p, 0, n); /* clean up */
2414 /* Send empty client key exch message */
2419 /* First check the size of encoding and
2420 * allocate memory accordingly.
2423 EC_POINT_point2oct(srvr_group,
2424 EC_KEY_get0_public_key(clnt_ecdh),
2425 POINT_CONVERSION_UNCOMPRESSED,
2428 encodedPoint = (unsigned char *)
2429 OPENSSL_malloc(encoded_pt_len *
2430 sizeof(unsigned char));
2431 bn_ctx = BN_CTX_new();
2432 if ((encodedPoint == NULL) ||
2435 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2439 /* Encode the public key */
2440 n = EC_POINT_point2oct(srvr_group,
2441 EC_KEY_get0_public_key(clnt_ecdh),
2442 POINT_CONVERSION_UNCOMPRESSED,
2443 encodedPoint, encoded_pt_len, bn_ctx);
2445 *p = n; /* length of encoded point */
2446 /* Encoded point will be copied here */
2448 /* copy the point */
2449 memcpy((unsigned char *)p, encodedPoint, n);
2450 /* increment n to account for length field */
2454 /* Free allocated memory */
2455 BN_CTX_free(bn_ctx);
2456 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2457 if (clnt_ecdh != NULL)
2458 EC_KEY_free(clnt_ecdh);
2459 EVP_PKEY_free(srvr_pub_pkey);
2461 #endif /* !OPENSSL_NO_ECDH */
2462 else if (alg_k & SSL_kGOST)
2464 /* GOST key exchange message creation */
2465 EVP_PKEY_CTX *pkey_ctx;
2468 unsigned int md_len;
2470 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2471 EVP_MD_CTX *ukm_hash;
2474 /* Get server sertificate PKEY and create ctx from it */
2475 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2477 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2479 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2483 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2484 /* If we have send a certificate, and certificate key
2486 * parameters match those of server certificate, use
2487 * certificate key for key exchange
2490 /* Otherwise, generate ephemeral key pair */
2492 EVP_PKEY_encrypt_init(pkey_ctx);
2493 /* Generate session key */
2494 RAND_bytes(premaster_secret,32);
2495 /* If we have client certificate, use its secret as peer key */
2496 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2497 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2498 /* If there was an error - just ignore it. Ephemeral key
2504 /* Compute shared IV and store it in algorithm-specific
2506 ukm_hash = EVP_MD_CTX_create();
2507 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2508 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2509 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2510 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2511 EVP_MD_CTX_destroy(ukm_hash);
2512 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2514 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2518 /* Make GOST keytransport blob message */
2519 /*Encapsulate it into sequence */
2520 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2522 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2523 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2530 *(p++)= msglen & 0xff;
2535 *(p++)= msglen & 0xff;
2538 memcpy(p, tmp, msglen);
2539 /* Check if pubkey from client certificate was used */
2540 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2542 /* Set flag "skip certificate verify" */
2543 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2545 EVP_PKEY_CTX_free(pkey_ctx);
2546 s->session->master_key_length=
2547 s->method->ssl3_enc->generate_master_secret(s,
2548 s->session->master_key,premaster_secret,32);
2549 EVP_PKEY_free(pub_key);
2552 #ifndef OPENSSL_NO_PSK
2553 else if (alg_k & SSL_kPSK)
2555 char identity[PSK_MAX_IDENTITY_LEN];
2556 unsigned char *t = NULL;
2557 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2558 unsigned int pre_ms_len = 0, psk_len = 0;
2562 if (s->psk_client_callback == NULL)
2564 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2565 SSL_R_PSK_NO_CLIENT_CB);
2569 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2570 identity, PSK_MAX_IDENTITY_LEN,
2571 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2572 if (psk_len > PSK_MAX_PSK_LEN)
2574 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2575 ERR_R_INTERNAL_ERROR);
2578 else if (psk_len == 0)
2580 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2581 SSL_R_PSK_IDENTITY_NOT_FOUND);
2585 /* create PSK pre_master_secret */
2586 pre_ms_len = 2+psk_len+2+psk_len;
2588 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2590 memset(t, 0, psk_len);
2594 if (s->session->psk_identity_hint != NULL)
2595 OPENSSL_free(s->session->psk_identity_hint);
2596 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2597 if (s->ctx->psk_identity_hint != NULL &&
2598 s->session->psk_identity_hint == NULL)
2600 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2601 ERR_R_MALLOC_FAILURE);
2605 if (s->session->psk_identity != NULL)
2606 OPENSSL_free(s->session->psk_identity);
2607 s->session->psk_identity = BUF_strdup(identity);
2608 if (s->session->psk_identity == NULL)
2610 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2611 ERR_R_MALLOC_FAILURE);
2615 s->session->master_key_length =
2616 s->method->ssl3_enc->generate_master_secret(s,
2617 s->session->master_key,
2618 psk_or_pre_ms, pre_ms_len);
2619 n = strlen(identity);
2621 memcpy(p, identity, n);
2625 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2626 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2629 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2636 ssl3_send_alert(s, SSL3_AL_FATAL,
2637 SSL_AD_HANDSHAKE_FAILURE);
2638 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2639 ERR_R_INTERNAL_ERROR);
2643 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2646 s->state=SSL3_ST_CW_KEY_EXCH_B;
2647 /* number of bytes to write */
2652 /* SSL3_ST_CW_KEY_EXCH_B */
2653 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2655 #ifndef OPENSSL_NO_ECDH
2656 BN_CTX_free(bn_ctx);
2657 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2658 if (clnt_ecdh != NULL)
2659 EC_KEY_free(clnt_ecdh);
2660 EVP_PKEY_free(srvr_pub_pkey);
2665 int ssl3_send_client_verify(SSL *s)
2667 unsigned char *p,*d;
2668 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2670 EVP_PKEY_CTX *pctx=NULL;
2671 #ifndef OPENSSL_NO_RSA
2675 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2679 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2681 d=(unsigned char *)s->init_buf->data;
2683 pkey=s->cert->key->privatekey;
2684 /* Create context from key and test if sha1 is allowed as digest */
2685 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2686 EVP_PKEY_sign_init(pctx);
2687 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2689 s->method->ssl3_enc->cert_verify_mac(s,
2691 &(data[MD5_DIGEST_LENGTH]));
2697 #ifndef OPENSSL_NO_RSA
2698 if (pkey->type == EVP_PKEY_RSA)
2700 s->method->ssl3_enc->cert_verify_mac(s,
2703 if (RSA_sign(NID_md5_sha1, data,
2704 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2705 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2707 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2715 #ifndef OPENSSL_NO_DSA
2716 if (pkey->type == EVP_PKEY_DSA)
2718 if (!DSA_sign(pkey->save_type,
2719 &(data[MD5_DIGEST_LENGTH]),
2720 SHA_DIGEST_LENGTH,&(p[2]),
2721 (unsigned int *)&j,pkey->pkey.dsa))
2723 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2731 #ifndef OPENSSL_NO_ECDSA
2732 if (pkey->type == EVP_PKEY_EC)
2734 if (!ECDSA_sign(pkey->save_type,
2735 &(data[MD5_DIGEST_LENGTH]),
2736 SHA_DIGEST_LENGTH,&(p[2]),
2737 (unsigned int *)&j,pkey->pkey.ec))
2739 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2748 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
2750 unsigned char signbuf[64];
2753 s->method->ssl3_enc->cert_verify_mac(s,
2754 NID_id_GostR3411_94,
2756 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
2757 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2758 ERR_R_INTERNAL_ERROR);
2761 for (i=63,j=0; i>=0; j++, i--) {
2769 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2772 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2775 s->state=SSL3_ST_CW_CERT_VRFY_B;
2776 s->init_num=(int)n+4;
2779 EVP_PKEY_CTX_free(pctx);
2780 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2782 EVP_PKEY_CTX_free(pctx);
2786 int ssl3_send_client_certificate(SSL *s)
2789 EVP_PKEY *pkey=NULL;
2793 if (s->state == SSL3_ST_CW_CERT_A)
2795 if ((s->cert == NULL) ||
2796 (s->cert->key->x509 == NULL) ||
2797 (s->cert->key->privatekey == NULL))
2798 s->state=SSL3_ST_CW_CERT_B;
2800 s->state=SSL3_ST_CW_CERT_C;
2803 /* We need to get a client cert */
2804 if (s->state == SSL3_ST_CW_CERT_B)
2806 /* If we get an error, we need to
2807 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2808 * We then get retied later */
2810 i = ssl_do_client_cert_cb(s, &x509, &pkey);
2813 s->rwstate=SSL_X509_LOOKUP;
2816 s->rwstate=SSL_NOTHING;
2817 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2819 s->state=SSL3_ST_CW_CERT_B;
2820 if ( !SSL_use_certificate(s,x509) ||
2821 !SSL_use_PrivateKey(s,pkey))
2827 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2830 if (x509 != NULL) X509_free(x509);
2831 if (pkey != NULL) EVP_PKEY_free(pkey);
2834 if (s->version == SSL3_VERSION)
2836 s->s3->tmp.cert_req=0;
2837 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2842 s->s3->tmp.cert_req=2;
2846 /* Ok, we have a cert */
2847 s->state=SSL3_ST_CW_CERT_C;
2850 if (s->state == SSL3_ST_CW_CERT_C)
2852 s->state=SSL3_ST_CW_CERT_D;
2853 l=ssl3_output_cert_chain(s,
2854 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2858 /* SSL3_ST_CW_CERT_D */
2859 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2862 #define has_bits(i,m) (((i)&(m)) == (m))
2864 int ssl3_check_cert_and_algorithm(SSL *s)
2868 EVP_PKEY *pkey=NULL;
2870 #ifndef OPENSSL_NO_RSA
2873 #ifndef OPENSSL_NO_DH
2877 sc=s->session->sess_cert;
2880 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2884 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2885 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
2887 /* we don't have a certificate */
2888 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
2891 #ifndef OPENSSL_NO_RSA
2892 rsa=s->session->sess_cert->peer_rsa_tmp;
2894 #ifndef OPENSSL_NO_DH
2895 dh=s->session->sess_cert->peer_dh_tmp;
2898 /* This is the passed certificate */
2900 idx=sc->peer_cert_type;
2901 #ifndef OPENSSL_NO_ECDH
2902 if (idx == SSL_PKEY_ECC)
2904 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2905 s->s3->tmp.new_cipher) == 0)
2906 { /* check failed */
2907 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2916 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2917 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2918 EVP_PKEY_free(pkey);
2921 /* Check that we have a certificate if we require one */
2922 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2924 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2927 #ifndef OPENSSL_NO_DSA
2928 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2930 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2934 #ifndef OPENSSL_NO_RSA
2935 if ((alg_k & SSL_kRSA) &&
2936 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2938 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2942 #ifndef OPENSSL_NO_DH
2943 if ((alg_k & SSL_kEDH) &&
2944 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2946 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2949 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2951 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2954 #ifndef OPENSSL_NO_DSA
2955 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2957 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2963 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2965 #ifndef OPENSSL_NO_RSA
2966 if (alg_k & SSL_kRSA)
2969 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2971 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2977 #ifndef OPENSSL_NO_DH
2978 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2981 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2983 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2990 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2996 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3001 /* Check to see if handshake is full or resumed. Usually this is just a
3002 * case of checking to see if a cache hit has occurred. In the case of
3003 * session tickets we have to check the next message to be sure.
3006 #ifndef OPENSSL_NO_TLSEXT
3007 int ssl3_check_finished(SSL *s)
3011 /* If we have no ticket it cannot be a resumed session. */
3012 if (!s->session->tlsext_tick)
3014 /* this function is called when we really expect a Certificate
3015 * message, so permit appropriate message length */
3016 n=s->method->ssl_get_message(s,
3022 if (!ok) return((int)n);
3023 s->s3->tmp.reuse_message = 1;
3024 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3025 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3032 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3035 #ifndef OPENSSL_NO_ENGINE
3036 if (s->ctx->client_cert_engine)
3038 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3039 SSL_get_client_CA_list(s),
3040 px509, ppkey, NULL, NULL, NULL);
3045 if (s->ctx->client_cert_cb)
3046 i = s->ctx->client_cert_cb(s,px509,ppkey);