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>
160 #include <openssl/fips.h>
162 #ifndef OPENSSL_NO_DH
163 #include <openssl/dh.h>
165 #include <openssl/bn.h>
166 #ifndef OPENSSL_NO_ENGINE
167 #include <openssl/engine.h>
170 static int ca_dn_cmp(const X509_NAME
* const *a
,const X509_NAME
* const *b
);
172 #ifndef OPENSSL_NO_SSL3_METHOD
173 static const SSL_METHOD
*ssl3_get_client_method(int ver
)
175 if (ver
== SSL3_VERSION
)
176 return(SSLv3_client_method());
181 IMPLEMENT_ssl3_meth_func(SSLv3_client_method
,
182 ssl_undefined_function
,
184 ssl3_get_client_method
)
187 int ssl3_connect(SSL
*s
)
190 unsigned long Time
=(unsigned long)time(NULL
);
191 void (*cb
)(const SSL
*ssl
,int type
,int val
)=NULL
;
193 int new_state
,state
,skip
=0;
195 RAND_add(&Time
,sizeof(Time
),0);
199 if (s
->info_callback
!= NULL
)
201 else if (s
->ctx
->info_callback
!= NULL
)
202 cb
=s
->ctx
->info_callback
;
205 if (!SSL_in_init(s
) || SSL_in_before(s
)) SSL_clear(s
);
207 #ifndef OPENSSL_NO_HEARTBEATS
208 /* If we're awaiting a HeartbeatResponse, pretend we
209 * already got and don't await it anymore, because
210 * Heartbeats don't make sense during handshakes anyway.
212 if (s
->tlsext_hb_pending
)
214 s
->tlsext_hb_pending
= 0;
225 case SSL_ST_RENEGOTIATE
:
227 s
->state
=SSL_ST_CONNECT
;
228 s
->ctx
->stats
.sess_connect_renegotiate
++;
232 case SSL_ST_BEFORE
|SSL_ST_CONNECT
:
233 case SSL_ST_OK
|SSL_ST_CONNECT
:
236 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_START
,1);
238 if ((s
->version
& 0xff00 ) != 0x0300)
240 SSLerr(SSL_F_SSL3_CONNECT
, ERR_R_INTERNAL_ERROR
);
245 if (!ssl_security(s
, SSL_SECOP_VERSION
, 0,
248 SSLerr(SSL_F_SSL3_CONNECT
, SSL_R_VERSION_TOO_LOW
);
252 /* s->version=SSL3_VERSION; */
253 s
->type
=SSL_ST_CONNECT
;
255 if (s
->init_buf
== NULL
)
257 if ((buf
=BUF_MEM_new()) == NULL
)
262 if (!BUF_MEM_grow(buf
,SSL3_RT_MAX_PLAIN_LENGTH
))
271 if (!ssl3_setup_buffers(s
)) { ret
= -1; goto end
; }
273 /* setup buffing BIO */
274 if (!ssl_init_wbio_buffer(s
,0)) { ret
= -1; goto end
; }
276 /* don't push the buffering BIO quite yet */
278 ssl3_init_finished_mac(s
);
280 s
->state
=SSL3_ST_CW_CLNT_HELLO_A
;
281 s
->ctx
->stats
.sess_connect
++;
285 case SSL3_ST_CW_CLNT_HELLO_A
:
286 case SSL3_ST_CW_CLNT_HELLO_B
:
289 ret
=ssl3_client_hello(s
);
290 if (ret
<= 0) goto end
;
291 s
->state
=SSL3_ST_CR_SRVR_HELLO_A
;
294 /* turn on buffering for the next lot of output */
295 if (s
->bbio
!= s
->wbio
)
296 s
->wbio
=BIO_push(s
->bbio
,s
->wbio
);
300 case SSL3_ST_CR_SRVR_HELLO_A
:
301 case SSL3_ST_CR_SRVR_HELLO_B
:
302 ret
=ssl3_get_server_hello(s
);
303 if (ret
<= 0) goto end
;
307 s
->state
=SSL3_ST_CR_FINISHED_A
;
308 #ifndef OPENSSL_NO_TLSEXT
309 if (s
->tlsext_ticket_expected
)
311 /* receive renewed session ticket */
312 s
->state
=SSL3_ST_CR_SESSION_TICKET_A
;
318 s
->state
=SSL3_ST_CR_CERT_A
;
322 case SSL3_ST_CR_CERT_A
:
323 case SSL3_ST_CR_CERT_B
:
324 /* Check if it is anon DH/ECDH, SRP auth */
326 if (!(s
->s3
->tmp
.new_cipher
->algorithm_auth
& (SSL_aNULL
|SSL_aSRP
)) &&
327 !(s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kPSK
))
329 ret
=ssl3_get_server_certificate(s
);
330 if (ret
<= 0) goto end
;
331 #ifndef OPENSSL_NO_TLSEXT
332 if (s
->tlsext_status_expected
)
333 s
->state
=SSL3_ST_CR_CERT_STATUS_A
;
335 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
340 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
347 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
352 case SSL3_ST_CR_KEY_EXCH_A
:
353 case SSL3_ST_CR_KEY_EXCH_B
:
354 ret
=ssl3_get_key_exchange(s
);
355 if (ret
<= 0) goto end
;
356 s
->state
=SSL3_ST_CR_CERT_REQ_A
;
359 /* at this point we check that we have the
360 * required stuff from the server */
361 if (!ssl3_check_cert_and_algorithm(s
))
368 case SSL3_ST_CR_CERT_REQ_A
:
369 case SSL3_ST_CR_CERT_REQ_B
:
370 ret
=ssl3_get_certificate_request(s
);
371 if (ret
<= 0) goto end
;
372 s
->state
=SSL3_ST_CR_SRVR_DONE_A
;
376 case SSL3_ST_CR_SRVR_DONE_A
:
377 case SSL3_ST_CR_SRVR_DONE_B
:
378 ret
=ssl3_get_server_done(s
);
379 if (ret
<= 0) goto end
;
380 #ifndef OPENSSL_NO_SRP
381 if (s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kSRP
)
383 if ((ret
= SRP_Calc_A_param(s
))<=0)
385 SSLerr(SSL_F_SSL3_CONNECT
,SSL_R_SRP_A_CALC
);
386 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_INTERNAL_ERROR
);
391 if (s
->s3
->tmp
.cert_req
)
392 s
->state
=SSL3_ST_CW_CERT_A
;
394 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
399 case SSL3_ST_CW_CERT_A
:
400 case SSL3_ST_CW_CERT_B
:
401 case SSL3_ST_CW_CERT_C
:
402 case SSL3_ST_CW_CERT_D
:
403 ret
=ssl3_send_client_certificate(s
);
404 if (ret
<= 0) goto end
;
405 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
409 case SSL3_ST_CW_KEY_EXCH_A
:
410 case SSL3_ST_CW_KEY_EXCH_B
:
411 ret
=ssl3_send_client_key_exchange(s
);
412 if (ret
<= 0) goto end
;
413 /* EAY EAY EAY need to check for DH fix cert
415 /* For TLS, cert_req is set to 2, so a cert chain
416 * of nothing is sent, but no verify packet is sent */
417 /* XXX: For now, we do not support client
418 * authentication in ECDH cipher suites with
419 * ECDH (rather than ECDSA) certificates.
420 * We need to skip the certificate verify
421 * message when client's ECDH public key is sent
422 * inside the client certificate.
424 if (s
->s3
->tmp
.cert_req
== 1)
426 s
->state
=SSL3_ST_CW_CERT_VRFY_A
;
430 s
->state
=SSL3_ST_CW_CHANGE_A
;
431 s
->s3
->change_cipher_spec
=0;
433 if (s
->s3
->flags
& TLS1_FLAGS_SKIP_CERT_VERIFY
)
435 s
->state
=SSL3_ST_CW_CHANGE_A
;
436 s
->s3
->change_cipher_spec
=0;
442 case SSL3_ST_CW_CERT_VRFY_A
:
443 case SSL3_ST_CW_CERT_VRFY_B
:
444 ret
=ssl3_send_client_verify(s
);
445 if (ret
<= 0) goto end
;
446 s
->state
=SSL3_ST_CW_CHANGE_A
;
448 s
->s3
->change_cipher_spec
=0;
451 case SSL3_ST_CW_CHANGE_A
:
452 case SSL3_ST_CW_CHANGE_B
:
453 ret
=ssl3_send_change_cipher_spec(s
,
454 SSL3_ST_CW_CHANGE_A
,SSL3_ST_CW_CHANGE_B
);
455 if (ret
<= 0) goto end
;
457 #if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
458 s
->state
=SSL3_ST_CW_FINISHED_A
;
460 if (s
->s3
->next_proto_neg_seen
)
461 s
->state
=SSL3_ST_CW_NEXT_PROTO_A
;
463 s
->state
=SSL3_ST_CW_FINISHED_A
;
467 s
->session
->cipher
=s
->s3
->tmp
.new_cipher
;
468 #ifdef OPENSSL_NO_COMP
469 s
->session
->compress_meth
=0;
471 if (s
->s3
->tmp
.new_compression
== NULL
)
472 s
->session
->compress_meth
=0;
474 s
->session
->compress_meth
=
475 s
->s3
->tmp
.new_compression
->id
;
477 if (!s
->method
->ssl3_enc
->setup_key_block(s
))
483 if (!s
->method
->ssl3_enc
->change_cipher_state(s
,
484 SSL3_CHANGE_CIPHER_CLIENT_WRITE
))
492 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
493 case SSL3_ST_CW_NEXT_PROTO_A
:
494 case SSL3_ST_CW_NEXT_PROTO_B
:
495 ret
=ssl3_send_next_proto(s
);
496 if (ret
<= 0) goto end
;
497 s
->state
=SSL3_ST_CW_FINISHED_A
;
501 case SSL3_ST_CW_FINISHED_A
:
502 case SSL3_ST_CW_FINISHED_B
:
503 ret
=ssl3_send_finished(s
,
504 SSL3_ST_CW_FINISHED_A
,SSL3_ST_CW_FINISHED_B
,
505 s
->method
->ssl3_enc
->client_finished_label
,
506 s
->method
->ssl3_enc
->client_finished_label_len
);
507 if (ret
<= 0) goto end
;
508 s
->s3
->flags
|= SSL3_FLAGS_CCS_OK
;
509 s
->state
=SSL3_ST_CW_FLUSH
;
512 s
->s3
->flags
&= ~SSL3_FLAGS_POP_BUFFER
;
515 s
->s3
->tmp
.next_state
=SSL_ST_OK
;
516 if (s
->s3
->flags
& SSL3_FLAGS_DELAY_CLIENT_FINISHED
)
519 s
->s3
->flags
|=SSL3_FLAGS_POP_BUFFER
;
520 s
->s3
->delay_buf_pop_ret
=0;
525 #ifndef OPENSSL_NO_TLSEXT
526 /* Allow NewSessionTicket if ticket expected */
527 if (s
->tlsext_ticket_expected
)
528 s
->s3
->tmp
.next_state
=SSL3_ST_CR_SESSION_TICKET_A
;
532 s
->s3
->tmp
.next_state
=SSL3_ST_CR_FINISHED_A
;
537 #ifndef OPENSSL_NO_TLSEXT
538 case SSL3_ST_CR_SESSION_TICKET_A
:
539 case SSL3_ST_CR_SESSION_TICKET_B
:
540 ret
=ssl3_get_new_session_ticket(s
);
541 if (ret
<= 0) goto end
;
542 s
->state
=SSL3_ST_CR_FINISHED_A
;
546 case SSL3_ST_CR_CERT_STATUS_A
:
547 case SSL3_ST_CR_CERT_STATUS_B
:
548 ret
=ssl3_get_cert_status(s
);
549 if (ret
<= 0) goto end
;
550 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
555 case SSL3_ST_CR_FINISHED_A
:
556 case SSL3_ST_CR_FINISHED_B
:
558 s
->s3
->flags
|= SSL3_FLAGS_CCS_OK
;
559 ret
=ssl3_get_finished(s
,SSL3_ST_CR_FINISHED_A
,
560 SSL3_ST_CR_FINISHED_B
);
561 if (ret
<= 0) goto end
;
564 s
->state
=SSL3_ST_CW_CHANGE_A
;
570 case SSL3_ST_CW_FLUSH
:
571 s
->rwstate
=SSL_WRITING
;
572 if (BIO_flush(s
->wbio
) <= 0)
577 s
->rwstate
=SSL_NOTHING
;
578 s
->state
=s
->s3
->tmp
.next_state
;
582 /* clean a few things up */
583 ssl3_cleanup_key_block(s
);
585 if (s
->init_buf
!= NULL
)
587 BUF_MEM_free(s
->init_buf
);
591 /* If we are not 'joining' the last two packets,
592 * remove the buffering now */
593 if (!(s
->s3
->flags
& SSL3_FLAGS_POP_BUFFER
))
594 ssl_free_wbio_buffer(s
);
595 /* else do it later in ssl3_write */
601 ssl_update_cache(s
,SSL_SESS_CACHE_CLIENT
);
602 if (s
->hit
) s
->ctx
->stats
.sess_hit
++;
606 s
->handshake_func
=ssl3_connect
;
607 s
->ctx
->stats
.sess_connect_good
++;
609 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_DONE
,1);
615 SSLerr(SSL_F_SSL3_CONNECT
,SSL_R_UNKNOWN_STATE
);
621 /* did we do anything */
622 if (!s
->s3
->tmp
.reuse_message
&& !skip
)
626 if ((ret
=BIO_flush(s
->wbio
)) <= 0)
630 if ((cb
!= NULL
) && (s
->state
!= state
))
634 cb(s
,SSL_CB_CONNECT_LOOP
,1);
645 cb(s
,SSL_CB_CONNECT_EXIT
,ret
);
650 int ssl3_client_hello(SSL
*s
)
657 #ifndef OPENSSL_NO_COMP
662 buf
=(unsigned char *)s
->init_buf
->data
;
663 if (s
->state
== SSL3_ST_CW_CLNT_HELLO_A
)
665 SSL_SESSION
*sess
= s
->session
;
666 if ((sess
== NULL
) ||
667 (sess
->ssl_version
!= s
->version
) ||
668 !sess
->session_id_length
||
669 (sess
->not_resumable
))
671 if (!ssl_get_new_session(s
,0))
674 if (s
->method
->version
== DTLS_ANY_VERSION
)
676 /* Determine which DTLS version to use */
677 int options
= s
->options
;
678 /* If DTLS 1.2 disabled correct the version number */
679 if (options
& SSL_OP_NO_DTLSv1_2
)
683 SSLerr(SSL_F_SSL3_CLIENT_HELLO
, SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE
);
686 /* Disabling all versions is silly: return an
689 if (options
& SSL_OP_NO_DTLSv1
)
691 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,SSL_R_WRONG_SSL_VERSION
);
694 /* Update method so we don't use any DTLS 1.2
697 s
->method
= DTLSv1_client_method();
698 s
->version
= DTLS1_VERSION
;
702 /* We only support one version: update method */
703 if (options
& SSL_OP_NO_DTLSv1
)
704 s
->method
= DTLSv1_2_client_method();
705 s
->version
= DTLS1_2_VERSION
;
707 s
->client_version
= s
->version
;
709 /* else use the pre-loaded session */
711 p
=s
->s3
->client_random
;
713 /* for DTLS if client_random is initialized, reuse it, we are
714 * required to use same upon reply to HelloVerify */
719 for (idx
=0; idx
< sizeof(s
->s3
->client_random
); idx
++)
732 ssl_fill_hello_random(s
, 0, p
,
733 sizeof(s
->s3
->client_random
));
735 /* Do the message type and length last */
736 d
=p
= ssl_handshake_start(s
);
738 /* version indicates the negotiated version: for example from
739 * an SSLv2/v3 compatible client hello). The client_version
740 * field is the maximum version we permit and it is also
741 * used in RSA encrypted premaster secrets. Some servers can
742 * choke if we initially report a higher version then
743 * renegotiate to a lower one in the premaster secret. This
744 * didn't happen with TLS 1.0 as most servers supported it
745 * but it can with TLS 1.1 or later if the server only supports
748 * Possible scenario with previous logic:
749 * 1. Client hello indicates TLS 1.2
750 * 2. Server hello says TLS 1.0
751 * 3. RSA encrypted premaster secret uses 1.2.
752 * 4. Handhaked proceeds using TLS 1.0.
753 * 5. Server sends hello request to renegotiate.
754 * 6. Client hello indicates TLS v1.0 as we now
755 * know that is maximum server supports.
756 * 7. Server chokes on RSA encrypted premaster secret
757 * containing version 1.0.
759 * For interoperability it should be OK to always use the
760 * maximum version we support in client hello and then rely
761 * on the checking of version to ensure the servers isn't
762 * being inconsistent: for example initially negotiating with
763 * TLS 1.0 and renegotiating with TLS 1.2. We do this by using
764 * client_version in client hello and not resetting it to
765 * the negotiated version.
768 *(p
++)=s
->version
>>8;
769 *(p
++)=s
->version
&0xff;
770 s
->client_version
=s
->version
;
772 *(p
++)=s
->client_version
>>8;
773 *(p
++)=s
->client_version
&0xff;
777 memcpy(p
,s
->s3
->client_random
,SSL3_RANDOM_SIZE
);
784 i
=s
->session
->session_id_length
;
788 if (i
> (int)sizeof(s
->session
->session_id
))
790 SSLerr(SSL_F_SSL3_CLIENT_HELLO
, ERR_R_INTERNAL_ERROR
);
793 memcpy(p
,s
->session
->session_id
,i
);
797 /* cookie stuff for DTLS */
800 if ( s
->d1
->cookie_len
> sizeof(s
->d1
->cookie
))
802 SSLerr(SSL_F_SSL3_CLIENT_HELLO
, ERR_R_INTERNAL_ERROR
);
805 *(p
++) = s
->d1
->cookie_len
;
806 memcpy(p
, s
->d1
->cookie
, s
->d1
->cookie_len
);
807 p
+= s
->d1
->cookie_len
;
810 /* Ciphers supported */
811 i
=ssl_cipher_list_to_bytes(s
,SSL_get_ciphers(s
),&(p
[2]),0);
814 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,SSL_R_NO_CIPHERS_AVAILABLE
);
817 #ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
818 /* Some servers hang if client hello > 256 bytes
819 * as hack workaround chop number of supported ciphers
820 * to keep it well below this if we use TLS v1.2
822 if (TLS1_get_version(s
) >= TLS1_2_VERSION
823 && i
> OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
)
824 i
= OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
& ~1;
830 #ifdef OPENSSL_NO_COMP
834 if (!ssl_allow_compression(s
) || !s
->ctx
->comp_methods
)
837 j
=sk_SSL_COMP_num(s
->ctx
->comp_methods
);
841 comp
=sk_SSL_COMP_value(s
->ctx
->comp_methods
,i
);
845 *(p
++)=0; /* Add the NULL method */
847 #ifndef OPENSSL_NO_TLSEXT
849 if (ssl_prepare_clienthello_tlsext(s
) <= 0)
851 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,SSL_R_CLIENTHELLO_TLSEXT
);
854 if ((p
= ssl_add_clienthello_tlsext(s
, p
, buf
+SSL3_RT_MAX_PLAIN_LENGTH
, &al
)) == NULL
)
856 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
857 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,ERR_R_INTERNAL_ERROR
);
863 ssl_set_handshake_header(s
, SSL3_MT_CLIENT_HELLO
, l
);
864 s
->state
=SSL3_ST_CW_CLNT_HELLO_B
;
867 /* SSL3_ST_CW_CLNT_HELLO_B */
868 return ssl_do_write(s
);
873 int ssl3_get_server_hello(SSL
*s
)
875 STACK_OF(SSL_CIPHER
) *sk
;
879 int i
,al
=SSL_AD_INTERNAL_ERROR
,ok
;
882 #ifndef OPENSSL_NO_COMP
885 /* Hello verify request and/or server hello version may not
886 * match so set first packet if we're negotiating version.
891 n
=s
->method
->ssl_get_message(s
,
892 SSL3_ST_CR_SRVR_HELLO_A
,
893 SSL3_ST_CR_SRVR_HELLO_B
,
898 if (!ok
) return((int)n
);
903 if ( s
->s3
->tmp
.message_type
== DTLS1_MT_HELLO_VERIFY_REQUEST
)
905 if ( s
->d1
->send_cookie
== 0)
907 s
->s3
->tmp
.reuse_message
= 1;
910 else /* already sent a cookie */
912 al
=SSL_AD_UNEXPECTED_MESSAGE
;
913 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_MESSAGE_TYPE
);
919 if ( s
->s3
->tmp
.message_type
!= SSL3_MT_SERVER_HELLO
)
921 al
=SSL_AD_UNEXPECTED_MESSAGE
;
922 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_MESSAGE_TYPE
);
926 d
=p
=(unsigned char *)s
->init_msg
;
927 if (s
->method
->version
== DTLS_ANY_VERSION
)
929 /* Work out correct protocol version to use */
930 int hversion
= (p
[0] << 8)|p
[1];
931 int options
= s
->options
;
932 if (hversion
== DTLS1_2_VERSION
933 && !(options
& SSL_OP_NO_DTLSv1_2
))
934 s
->method
= DTLSv1_2_client_method();
935 else if (tls1_suiteb(s
))
937 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
, SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE
);
938 s
->version
= hversion
;
939 al
= SSL_AD_PROTOCOL_VERSION
;
942 else if (hversion
== DTLS1_VERSION
943 && !(options
& SSL_OP_NO_DTLSv1
))
944 s
->method
= DTLSv1_client_method();
947 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_SSL_VERSION
);
948 s
->version
= hversion
;
949 al
= SSL_AD_PROTOCOL_VERSION
;
952 s
->version
= s
->client_version
= s
->method
->version
;
955 if ((p
[0] != (s
->version
>>8)) || (p
[1] != (s
->version
&0xff)))
957 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_SSL_VERSION
);
958 s
->version
=(s
->version
&0xff00)|p
[1];
959 al
=SSL_AD_PROTOCOL_VERSION
;
964 /* load the server hello data */
965 /* load the server random */
966 memcpy(s
->s3
->server_random
,p
,SSL3_RANDOM_SIZE
);
971 /* get the session-id */
974 if ((j
> sizeof s
->session
->session_id
) || (j
> SSL3_SESSION_ID_SIZE
))
976 al
=SSL_AD_ILLEGAL_PARAMETER
;
977 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_SSL3_SESSION_ID_TOO_LONG
);
981 #ifndef OPENSSL_NO_TLSEXT
982 /* check if we want to resume the session based on external pre-shared secret */
983 if (s
->version
>= TLS1_VERSION
&& s
->tls_session_secret_cb
)
985 SSL_CIPHER
*pref_cipher
=NULL
;
986 s
->session
->master_key_length
=sizeof(s
->session
->master_key
);
987 if (s
->tls_session_secret_cb(s
, s
->session
->master_key
,
988 &s
->session
->master_key_length
,
990 s
->tls_session_secret_cb_arg
))
992 s
->session
->cipher
= pref_cipher
?
993 pref_cipher
: ssl_get_cipher_by_char(s
, p
+j
);
995 s
->s3
->flags
|= SSL3_FLAGS_CCS_OK
;
998 #endif /* OPENSSL_NO_TLSEXT */
1000 if (!s
->hit
&& j
!= 0 && j
== s
->session
->session_id_length
1001 && memcmp(p
,s
->session
->session_id
,j
) == 0)
1003 if(s
->sid_ctx_length
!= s
->session
->sid_ctx_length
1004 || memcmp(s
->session
->sid_ctx
,s
->sid_ctx
,s
->sid_ctx_length
))
1006 /* actually a client application bug */
1007 al
=SSL_AD_ILLEGAL_PARAMETER
;
1008 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT
);
1011 s
->s3
->flags
|= SSL3_FLAGS_CCS_OK
;
1014 /* a miss or crap from the other end */
1017 /* If we were trying for session-id reuse, make a new
1018 * SSL_SESSION so we don't stuff up other people */
1019 if (s
->session
->session_id_length
> 0)
1021 if (!ssl_get_new_session(s
,0))
1026 s
->session
->session_id_length
=j
;
1027 memcpy(s
->session
->session_id
,p
,j
); /* j could be 0 */
1030 c
=ssl_get_cipher_by_char(s
,p
);
1033 /* unknown cipher */
1034 al
=SSL_AD_ILLEGAL_PARAMETER
;
1035 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNKNOWN_CIPHER_RETURNED
);
1038 /* Set version disabled mask now we know version */
1039 if (!SSL_USE_TLS1_2_CIPHERS(s
))
1040 ct
->mask_ssl
= SSL_TLSV1_2
;
1043 /* If it is a disabled cipher we didn't send it in client hello,
1044 * so return an error.
1046 if (ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_CHECK
))
1048 al
=SSL_AD_ILLEGAL_PARAMETER
;
1049 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_CIPHER_RETURNED
);
1052 p
+=ssl_put_cipher_by_char(s
,NULL
,NULL
);
1054 sk
=ssl_get_ciphers_by_id(s
);
1055 i
=sk_SSL_CIPHER_find(sk
,c
);
1058 /* we did not say we would use this cipher */
1059 al
=SSL_AD_ILLEGAL_PARAMETER
;
1060 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_CIPHER_RETURNED
);
1064 /* Depending on the session caching (internal/external), the cipher
1065 and/or cipher_id values may not be set. Make sure that
1066 cipher_id is set and use it for comparison. */
1067 if (s
->session
->cipher
)
1068 s
->session
->cipher_id
= s
->session
->cipher
->id
;
1069 if (s
->hit
&& (s
->session
->cipher_id
!= c
->id
))
1071 /* Workaround is now obsolete */
1074 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
))
1077 al
=SSL_AD_ILLEGAL_PARAMETER
;
1078 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED
);
1082 s
->s3
->tmp
.new_cipher
=c
;
1083 /* Don't digest cached records if no sigalgs: we may need them for
1084 * client authentication.
1086 if (!SSL_USE_SIGALGS(s
) && !ssl3_digest_cached_records(s
))
1088 /* lets get the compression algorithm */
1090 #ifdef OPENSSL_NO_COMP
1093 al
=SSL_AD_ILLEGAL_PARAMETER
;
1094 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
1097 /* If compression is disabled we'd better not try to resume a session
1098 * using compression.
1100 if (s
->session
->compress_meth
!= 0)
1102 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_INCONSISTENT_COMPRESSION
);
1107 if (s
->hit
&& j
!= s
->session
->compress_meth
)
1109 al
=SSL_AD_ILLEGAL_PARAMETER
;
1110 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED
);
1115 else if (!ssl_allow_compression(s
))
1117 al
=SSL_AD_ILLEGAL_PARAMETER
;
1118 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_COMPRESSION_DISABLED
);
1122 comp
=ssl3_comp_find(s
->ctx
->comp_methods
,j
);
1124 if ((j
!= 0) && (comp
== NULL
))
1126 al
=SSL_AD_ILLEGAL_PARAMETER
;
1127 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
1132 s
->s3
->tmp
.new_compression
=comp
;
1136 #ifndef OPENSSL_NO_TLSEXT
1138 if (!ssl_parse_serverhello_tlsext(s
,&p
,d
,n
))
1140 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_PARSE_TLSEXT
);
1147 /* wrong packet length */
1148 al
=SSL_AD_DECODE_ERROR
;
1149 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_PACKET_LENGTH
);
1155 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1160 int ssl3_get_server_certificate(SSL
*s
)
1162 int al
,i
,ok
,ret
= -1;
1163 unsigned long n
,nc
,llen
,l
;
1165 const unsigned char *q
,*p
;
1167 STACK_OF(X509
) *sk
=NULL
;
1169 EVP_PKEY
*pkey
=NULL
;
1170 int need_cert
= 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1172 n
=s
->method
->ssl_get_message(s
,
1179 if (!ok
) return((int)n
);
1181 if ((s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_KEY_EXCHANGE
) ||
1182 ((s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aKRB5
) &&
1183 (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_DONE
)))
1185 s
->s3
->tmp
.reuse_message
=1;
1189 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE
)
1191 al
=SSL_AD_UNEXPECTED_MESSAGE
;
1192 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_BAD_MESSAGE_TYPE
);
1195 p
=d
=(unsigned char *)s
->init_msg
;
1197 if ((sk
=sk_X509_new_null()) == NULL
)
1199 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
1206 al
=SSL_AD_DECODE_ERROR
;
1207 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_LENGTH_MISMATCH
);
1210 for (nc
=0; nc
<llen
; )
1213 if ((l
+nc
+3) > llen
)
1215 al
=SSL_AD_DECODE_ERROR
;
1216 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
1221 x
=d2i_X509(NULL
,&q
,l
);
1224 al
=SSL_AD_BAD_CERTIFICATE
;
1225 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_ASN1_LIB
);
1230 al
=SSL_AD_DECODE_ERROR
;
1231 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
1234 if (!sk_X509_push(sk
,x
))
1236 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
1244 i
=ssl_verify_cert_chain(s
,sk
);
1245 if ((s
->verify_mode
!= SSL_VERIFY_NONE
) && (i
<= 0)
1246 #ifndef OPENSSL_NO_KRB5
1247 && !((s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kKRB5
) &&
1248 (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aKRB5
))
1249 #endif /* OPENSSL_NO_KRB5 */
1252 al
=ssl_verify_alarm_type(s
->verify_result
);
1253 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERTIFICATE_VERIFY_FAILED
);
1256 ERR_clear_error(); /* but we keep s->verify_result */
1259 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
, i
);
1260 al
= SSL_AD_HANDSHAKE_FAILURE
;
1264 sc
=ssl_sess_cert_new();
1265 if (sc
== NULL
) goto err
;
1267 if (s
->session
->sess_cert
) ssl_sess_cert_free(s
->session
->sess_cert
);
1268 s
->session
->sess_cert
=sc
;
1271 /* Inconsistency alert: cert_chain does include the peer's
1272 * certificate, which we don't include in s3_srvr.c */
1273 x
=sk_X509_value(sk
,0);
1275 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1277 pkey
=X509_get_pubkey(x
);
1279 /* VRS: allow null cert if auth == KRB5 */
1280 need_cert
= ((s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kKRB5
) &&
1281 (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aKRB5
))
1285 printf("pkey,x = %p, %p\n", pkey
,x
);
1286 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x
,pkey
));
1287 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s
->s3
->tmp
.new_cipher
->name
,
1288 s
->s3
->tmp
.new_cipher
->algorithm_mkey
, s
->s3
->tmp
.new_cipher
->algorithm_auth
, need_cert
);
1289 #endif /* KSSL_DEBUG */
1291 if (need_cert
&& ((pkey
== NULL
) || EVP_PKEY_missing_parameters(pkey
)))
1295 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
1296 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS
);
1300 i
=ssl_cert_type(x
,pkey
);
1301 if (need_cert
&& i
< 0)
1305 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
1306 SSL_R_UNKNOWN_CERTIFICATE_TYPE
);
1312 int exp_idx
= ssl_cipher_get_cert_index(s
->s3
->tmp
.new_cipher
);
1313 if (exp_idx
>= 0 && i
!= exp_idx
)
1316 al
=SSL_AD_ILLEGAL_PARAMETER
;
1317 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
1318 SSL_R_WRONG_CERTIFICATE_TYPE
);
1321 sc
->peer_cert_type
=i
;
1322 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
1323 /* Why would the following ever happen?
1324 * We just created sc a couple of lines ago. */
1325 if (sc
->peer_pkeys
[i
].x509
!= NULL
)
1326 X509_free(sc
->peer_pkeys
[i
].x509
);
1327 sc
->peer_pkeys
[i
].x509
=x
;
1328 sc
->peer_key
= &(sc
->peer_pkeys
[i
]);
1330 if (s
->session
->peer
!= NULL
)
1331 X509_free(s
->session
->peer
);
1332 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
1337 sc
->peer_cert_type
=i
;
1340 if (s
->session
->peer
!= NULL
)
1341 X509_free(s
->session
->peer
);
1342 s
->session
->peer
=NULL
;
1344 s
->session
->verify_result
= s
->verify_result
;
1351 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1354 EVP_PKEY_free(pkey
);
1356 sk_X509_pop_free(sk
,X509_free
);
1360 int ssl3_get_key_exchange(SSL
*s
)
1362 #ifndef OPENSSL_NO_RSA
1363 unsigned char *q
,md_buf
[EVP_MAX_MD_SIZE
*2];
1366 unsigned char *param
,*p
;
1368 long i
,param_len
,n
,alg_k
,alg_a
;
1369 EVP_PKEY
*pkey
=NULL
;
1370 const EVP_MD
*md
= NULL
;
1371 #ifndef OPENSSL_NO_RSA
1374 #ifndef OPENSSL_NO_DH
1377 #ifndef OPENSSL_NO_ECDH
1378 EC_KEY
*ecdh
= NULL
;
1379 BN_CTX
*bn_ctx
= NULL
;
1380 EC_POINT
*srvr_ecpoint
= NULL
;
1382 int encoded_pt_len
= 0;
1385 /* use same message size as in ssl3_get_certificate_request()
1386 * as ServerKeyExchange message may be skipped */
1387 n
=s
->method
->ssl_get_message(s
,
1388 SSL3_ST_CR_KEY_EXCH_A
,
1389 SSL3_ST_CR_KEY_EXCH_B
,
1393 if (!ok
) return((int)n
);
1395 if (s
->s3
->tmp
.message_type
!= SSL3_MT_SERVER_KEY_EXCHANGE
)
1397 #ifndef OPENSSL_NO_PSK
1398 /* In plain PSK ciphersuite, ServerKeyExchange can be
1399 omitted if no identity hint is sent. Set
1400 session->sess_cert anyway to avoid problems
1402 if (s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kPSK
)
1404 s
->session
->sess_cert
=ssl_sess_cert_new();
1405 if (s
->ctx
->psk_identity_hint
)
1406 OPENSSL_free(s
->ctx
->psk_identity_hint
);
1407 s
->ctx
->psk_identity_hint
= NULL
;
1410 s
->s3
->tmp
.reuse_message
=1;
1414 param
=p
=(unsigned char *)s
->init_msg
;
1415 if (s
->session
->sess_cert
!= NULL
)
1417 #ifndef OPENSSL_NO_RSA
1418 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
1420 RSA_free(s
->session
->sess_cert
->peer_rsa_tmp
);
1421 s
->session
->sess_cert
->peer_rsa_tmp
=NULL
;
1424 #ifndef OPENSSL_NO_DH
1425 if (s
->session
->sess_cert
->peer_dh_tmp
)
1427 DH_free(s
->session
->sess_cert
->peer_dh_tmp
);
1428 s
->session
->sess_cert
->peer_dh_tmp
=NULL
;
1431 #ifndef OPENSSL_NO_ECDH
1432 if (s
->session
->sess_cert
->peer_ecdh_tmp
)
1434 EC_KEY_free(s
->session
->sess_cert
->peer_ecdh_tmp
);
1435 s
->session
->sess_cert
->peer_ecdh_tmp
=NULL
;
1441 s
->session
->sess_cert
=ssl_sess_cert_new();
1444 /* Total length of the parameters including the length prefix */
1447 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
1448 alg_a
=s
->s3
->tmp
.new_cipher
->algorithm_auth
;
1449 EVP_MD_CTX_init(&md_ctx
);
1451 al
=SSL_AD_DECODE_ERROR
;
1453 #ifndef OPENSSL_NO_PSK
1454 if (alg_k
& SSL_kPSK
)
1456 char tmp_id_hint
[PSK_MAX_IDENTITY_LEN
+1];
1461 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1462 SSL_R_LENGTH_TOO_SHORT
);
1467 /* Store PSK identity hint for later use, hint is used
1468 * in ssl3_send_client_key_exchange. Assume that the
1469 * maximum length of a PSK identity hint can be as
1470 * long as the maximum length of a PSK identity. */
1471 if (i
> PSK_MAX_IDENTITY_LEN
)
1473 al
=SSL_AD_HANDSHAKE_FAILURE
;
1474 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1475 SSL_R_DATA_LENGTH_TOO_LONG
);
1478 if (i
> n
- param_len
)
1480 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1481 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH
);
1486 /* If received PSK identity hint contains NULL
1487 * characters, the hint is truncated from the first
1488 * NULL. p may not be ending with NULL, so create a
1489 * NULL-terminated string. */
1490 memcpy(tmp_id_hint
, p
, i
);
1491 memset(tmp_id_hint
+i
, 0, PSK_MAX_IDENTITY_LEN
+1-i
);
1492 if (s
->ctx
->psk_identity_hint
!= NULL
)
1493 OPENSSL_free(s
->ctx
->psk_identity_hint
);
1494 s
->ctx
->psk_identity_hint
= BUF_strdup(tmp_id_hint
);
1495 if (s
->ctx
->psk_identity_hint
== NULL
)
1497 al
=SSL_AD_HANDSHAKE_FAILURE
;
1498 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
, ERR_R_MALLOC_FAILURE
);
1506 #endif /* !OPENSSL_NO_PSK */
1507 #ifndef OPENSSL_NO_SRP
1508 if (alg_k
& SSL_kSRP
)
1513 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1514 SSL_R_LENGTH_TOO_SHORT
);
1519 if (i
> n
- param_len
)
1521 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_N_LENGTH
);
1526 if (!(s
->srp_ctx
.N
=BN_bin2bn(p
,i
,NULL
)))
1528 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1534 if (2 > n
- param_len
)
1536 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1537 SSL_R_LENGTH_TOO_SHORT
);
1544 if (i
> n
- param_len
)
1546 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_G_LENGTH
);
1551 if (!(s
->srp_ctx
.g
=BN_bin2bn(p
,i
,NULL
)))
1553 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1559 if (1 > n
- param_len
)
1561 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1562 SSL_R_LENGTH_TOO_SHORT
);
1567 i
= (unsigned int)(p
[0]);
1570 if (i
> n
- param_len
)
1572 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_S_LENGTH
);
1577 if (!(s
->srp_ctx
.s
=BN_bin2bn(p
,i
,NULL
)))
1579 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1584 if (2 > n
- param_len
)
1586 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1587 SSL_R_LENGTH_TOO_SHORT
);
1594 if (i
> n
- param_len
)
1596 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_B_LENGTH
);
1601 if (!(s
->srp_ctx
.B
=BN_bin2bn(p
,i
,NULL
)))
1603 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1609 if (!srp_verify_server_param(s
, &al
))
1611 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_PARAMETERS
);
1615 /* We must check if there is a certificate */
1616 #ifndef OPENSSL_NO_RSA
1617 if (alg_a
& SSL_aRSA
)
1618 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1623 #ifndef OPENSSL_NO_DSA
1624 else if (alg_a
& SSL_aDSS
)
1625 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_DSA_SIGN
].x509
);
1629 #endif /* !OPENSSL_NO_SRP */
1630 #ifndef OPENSSL_NO_RSA
1631 if (alg_k
& SSL_kRSA
)
1633 if ((rsa
=RSA_new()) == NULL
)
1635 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1642 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1643 SSL_R_LENGTH_TOO_SHORT
);
1648 if (i
> n
- param_len
)
1650 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_MODULUS_LENGTH
);
1655 if (!(rsa
->n
=BN_bin2bn(p
,i
,rsa
->n
)))
1657 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1662 if (2 > n
- param_len
)
1664 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1665 SSL_R_LENGTH_TOO_SHORT
);
1672 if (i
> n
- param_len
)
1674 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_E_LENGTH
);
1679 if (!(rsa
->e
=BN_bin2bn(p
,i
,rsa
->e
)))
1681 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1687 /* this should be because we are using an export cipher */
1688 if (alg_a
& SSL_aRSA
)
1689 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1692 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1695 s
->session
->sess_cert
->peer_rsa_tmp
=rsa
;
1698 #else /* OPENSSL_NO_RSA */
1702 #ifndef OPENSSL_NO_DH
1703 else if (alg_k
& SSL_kDHE
)
1705 if ((dh
=DH_new()) == NULL
)
1707 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1714 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1715 SSL_R_LENGTH_TOO_SHORT
);
1720 if (i
> n
- param_len
)
1722 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_P_LENGTH
);
1727 if (!(dh
->p
=BN_bin2bn(p
,i
,NULL
)))
1729 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1734 if (2 > n
- param_len
)
1736 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1737 SSL_R_LENGTH_TOO_SHORT
);
1744 if (i
> n
- param_len
)
1746 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_G_LENGTH
);
1751 if (!(dh
->g
=BN_bin2bn(p
,i
,NULL
)))
1753 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1758 if (2 > n
- param_len
)
1760 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1761 SSL_R_LENGTH_TOO_SHORT
);
1768 if (i
> n
- param_len
)
1770 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_PUB_KEY_LENGTH
);
1775 if (!(dh
->pub_key
=BN_bin2bn(p
,i
,NULL
)))
1777 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1783 if (!ssl_security(s
, SSL_SECOP_TMP_DH
,
1784 DH_security_bits(dh
), 0, dh
))
1786 al
=SSL_AD_HANDSHAKE_FAILURE
;
1787 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_DH_KEY_TOO_SMALL
);
1791 #ifndef OPENSSL_NO_RSA
1792 if (alg_a
& SSL_aRSA
)
1793 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1798 #ifndef OPENSSL_NO_DSA
1799 else if (alg_a
& SSL_aDSS
)
1800 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_DSA_SIGN
].x509
);
1802 /* else anonymous DH, so no certificate or pkey. */
1804 s
->session
->sess_cert
->peer_dh_tmp
=dh
;
1807 else if ((alg_k
& SSL_kDHr
) || (alg_k
& SSL_kDHd
))
1809 al
=SSL_AD_ILLEGAL_PARAMETER
;
1810 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER
);
1813 #endif /* !OPENSSL_NO_DH */
1815 #ifndef OPENSSL_NO_ECDH
1816 else if (alg_k
& SSL_kECDHE
)
1819 const EC_GROUP
*group
;
1821 if ((ecdh
=EC_KEY_new()) == NULL
)
1823 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1827 /* Extract elliptic curve parameters and the
1828 * server's ephemeral ECDH public key.
1829 * Keep accumulating lengths of various components in
1830 * param_len and make sure it never exceeds n.
1833 /* XXX: For now we only support named (not generic) curves
1834 * and the ECParameters in this case is just three bytes. We
1835 * also need one byte for the length of the encoded point
1840 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1841 SSL_R_LENGTH_TOO_SHORT
);
1844 /* Check curve is one of our preferences, if not server has
1845 * sent an invalid curve. ECParameters is 3 bytes.
1847 if (!tls1_check_curve(s
, p
, 3))
1849 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_WRONG_CURVE
);
1853 if ((curve_nid
= tls1_ec_curve_id2nid(*(p
+ 2))) == 0)
1855 al
=SSL_AD_INTERNAL_ERROR
;
1856 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS
);
1860 ngroup
= EC_GROUP_new_by_curve_name(curve_nid
);
1863 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_EC_LIB
);
1866 if (EC_KEY_set_group(ecdh
, ngroup
) == 0)
1868 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_EC_LIB
);
1871 EC_GROUP_free(ngroup
);
1873 group
= EC_KEY_get0_group(ecdh
);
1875 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) &&
1876 (EC_GROUP_get_degree(group
) > 163))
1878 al
=SSL_AD_EXPORT_RESTRICTION
;
1879 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER
);
1885 /* Next, get the encoded ECPoint */
1886 if (((srvr_ecpoint
= EC_POINT_new(group
)) == NULL
) ||
1887 ((bn_ctx
= BN_CTX_new()) == NULL
))
1889 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1893 encoded_pt_len
= *p
; /* length of encoded point */
1896 if ((encoded_pt_len
> n
- param_len
) ||
1897 (EC_POINT_oct2point(group
, srvr_ecpoint
,
1898 p
, encoded_pt_len
, bn_ctx
) == 0))
1900 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_ECPOINT
);
1903 param_len
+= encoded_pt_len
;
1908 /* The ECC/TLS specification does not mention
1909 * the use of DSA to sign ECParameters in the server
1910 * key exchange message. We do support RSA and ECDSA.
1913 #ifndef OPENSSL_NO_RSA
1914 else if (alg_a
& SSL_aRSA
)
1915 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1917 #ifndef OPENSSL_NO_ECDSA
1918 else if (alg_a
& SSL_aECDSA
)
1919 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_ECC
].x509
);
1921 /* else anonymous ECDH, so no certificate or pkey. */
1922 EC_KEY_set_public_key(ecdh
, srvr_ecpoint
);
1923 s
->session
->sess_cert
->peer_ecdh_tmp
=ecdh
;
1925 BN_CTX_free(bn_ctx
);
1927 EC_POINT_free(srvr_ecpoint
);
1928 srvr_ecpoint
= NULL
;
1932 al
=SSL_AD_UNEXPECTED_MESSAGE
;
1933 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNEXPECTED_MESSAGE
);
1936 #endif /* !OPENSSL_NO_ECDH */
1939 /* p points to the next byte, there are 'n' bytes left */
1941 /* if it was signed, check the signature */
1944 if (SSL_USE_SIGALGS(s
))
1949 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1950 SSL_R_LENGTH_TOO_SHORT
);
1953 rv
= tls12_check_peer_sigalg(&md
, s
, p
, pkey
);
1961 fprintf(stderr
, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md
));
1971 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1972 SSL_R_LENGTH_TOO_SHORT
);
1977 j
=EVP_PKEY_size(pkey
);
1979 /* Check signature length. If n is 0 then signature is empty */
1980 if ((i
!= n
) || (n
> j
) || (n
<= 0))
1982 /* wrong packet length */
1983 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_WRONG_SIGNATURE_LENGTH
);
1987 #ifndef OPENSSL_NO_RSA
1988 if (pkey
->type
== EVP_PKEY_RSA
&& !SSL_USE_SIGALGS(s
))
1995 for (num
=2; num
> 0; num
--)
1997 EVP_MD_CTX_set_flags(&md_ctx
,
1998 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW
);
1999 EVP_DigestInit_ex(&md_ctx
,(num
== 2)
2000 ?s
->ctx
->md5
:s
->ctx
->sha1
, NULL
);
2001 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
2002 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
2003 EVP_DigestUpdate(&md_ctx
,param
,param_len
);
2004 EVP_DigestFinal_ex(&md_ctx
,q
,&size
);
2008 i
=RSA_verify(NID_md5_sha1
, md_buf
, j
, p
, n
,
2012 al
=SSL_AD_DECRYPT_ERROR
;
2013 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_DECRYPT
);
2019 al
=SSL_AD_DECRYPT_ERROR
;
2020 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
2027 EVP_VerifyInit_ex(&md_ctx
, md
, NULL
);
2028 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
2029 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
2030 EVP_VerifyUpdate(&md_ctx
,param
,param_len
);
2031 if (EVP_VerifyFinal(&md_ctx
,p
,(int)n
,pkey
) <= 0)
2034 al
=SSL_AD_DECRYPT_ERROR
;
2035 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
2042 /* aNULL, aSRP or kPSK do not need public keys */
2043 if (!(alg_a
& (SSL_aNULL
|SSL_aSRP
)) && !(alg_k
& SSL_kPSK
))
2045 /* Might be wrong key type, check it */
2046 if (ssl3_check_cert_and_algorithm(s
))
2047 /* Otherwise this shouldn't happen */
2048 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
2051 /* still data left over */
2054 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_EXTRA_DATA_IN_MESSAGE
);
2058 EVP_PKEY_free(pkey
);
2059 EVP_MD_CTX_cleanup(&md_ctx
);
2062 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
2064 EVP_PKEY_free(pkey
);
2065 #ifndef OPENSSL_NO_RSA
2069 #ifndef OPENSSL_NO_DH
2073 #ifndef OPENSSL_NO_ECDH
2074 BN_CTX_free(bn_ctx
);
2075 EC_POINT_free(srvr_ecpoint
);
2079 EVP_MD_CTX_cleanup(&md_ctx
);
2083 int ssl3_get_certificate_request(SSL
*s
)
2086 unsigned long n
,nc
,l
;
2087 unsigned int llen
, ctype_num
,i
;
2089 const unsigned char *p
,*q
;
2091 STACK_OF(X509_NAME
) *ca_sk
=NULL
;
2093 n
=s
->method
->ssl_get_message(s
,
2094 SSL3_ST_CR_CERT_REQ_A
,
2095 SSL3_ST_CR_CERT_REQ_B
,
2100 if (!ok
) return((int)n
);
2102 s
->s3
->tmp
.cert_req
=0;
2104 if (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_DONE
)
2106 s
->s3
->tmp
.reuse_message
=1;
2107 /* If we get here we don't need any cached handshake records
2108 * as we wont be doing client auth.
2110 if (s
->s3
->handshake_buffer
)
2112 if (!ssl3_digest_cached_records(s
))
2118 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE_REQUEST
)
2120 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
2121 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_WRONG_MESSAGE_TYPE
);
2125 /* TLS does not like anon-DH with client cert */
2126 if (s
->version
> SSL3_VERSION
)
2128 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aNULL
)
2130 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
2131 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER
);
2136 p
=d
=(unsigned char *)s
->init_msg
;
2138 if ((ca_sk
=sk_X509_NAME_new(ca_dn_cmp
)) == NULL
)
2140 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
2144 /* get the certificate types */
2146 if (s
->cert
->ctypes
)
2148 OPENSSL_free(s
->cert
->ctypes
);
2149 s
->cert
->ctypes
= NULL
;
2151 if (ctype_num
> SSL3_CT_NUMBER
)
2153 /* If we exceed static buffer copy all to cert structure */
2154 s
->cert
->ctypes
= OPENSSL_malloc(ctype_num
);
2155 memcpy(s
->cert
->ctypes
, p
, ctype_num
);
2156 s
->cert
->ctype_num
= (size_t)ctype_num
;
2157 ctype_num
=SSL3_CT_NUMBER
;
2159 for (i
=0; i
<ctype_num
; i
++)
2160 s
->s3
->tmp
.ctype
[i
]= p
[i
];
2162 if (SSL_USE_SIGALGS(s
))
2165 /* Check we have enough room for signature algorithms and
2166 * following length value.
2168 if ((unsigned long)(p
- d
+ llen
+ 2) > n
)
2170 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2171 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_DATA_LENGTH_TOO_LONG
);
2174 /* Clear certificate digests and validity flags */
2175 for (i
= 0; i
< SSL_PKEY_NUM
; i
++)
2177 s
->cert
->pkeys
[i
].digest
= NULL
;
2178 s
->cert
->pkeys
[i
].valid_flags
= 0;
2180 if ((llen
& 1) || !tls1_save_sigalgs(s
, p
, llen
))
2182 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2183 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_SIGNATURE_ALGORITHMS_ERROR
);
2186 if (!tls1_process_sigalgs(s
))
2188 ssl3_send_alert(s
,SSL3_AL_FATAL
, SSL_AD_INTERNAL_ERROR
);
2189 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
, ERR_R_MALLOC_FAILURE
);
2195 /* get the CA RDNs */
2200 out
=fopen("/tmp/vsign.der","w");
2201 fwrite(p
,1,llen
,out
);
2206 if ((unsigned long)(p
- d
+ llen
) != n
)
2208 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2209 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_LENGTH_MISMATCH
);
2213 for (nc
=0; nc
<llen
; )
2216 if ((l
+nc
+2) > llen
)
2218 if ((s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
))
2219 goto cont
; /* netscape bugs */
2220 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2221 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_TOO_LONG
);
2227 if ((xn
=d2i_X509_NAME(NULL
,&q
,l
)) == NULL
)
2229 /* If netscape tolerance is on, ignore errors */
2230 if (s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
)
2234 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2235 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_ASN1_LIB
);
2242 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2243 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_LENGTH_MISMATCH
);
2246 if (!sk_X509_NAME_push(ca_sk
,xn
))
2248 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
2262 /* we should setup a certificate to return.... */
2263 s
->s3
->tmp
.cert_req
=1;
2264 s
->s3
->tmp
.ctype_num
=ctype_num
;
2265 if (s
->s3
->tmp
.ca_names
!= NULL
)
2266 sk_X509_NAME_pop_free(s
->s3
->tmp
.ca_names
,X509_NAME_free
);
2267 s
->s3
->tmp
.ca_names
=ca_sk
;
2272 if (ca_sk
!= NULL
) sk_X509_NAME_pop_free(ca_sk
,X509_NAME_free
);
2276 static int ca_dn_cmp(const X509_NAME
* const *a
, const X509_NAME
* const *b
)
2278 return(X509_NAME_cmp(*a
,*b
));
2280 #ifndef OPENSSL_NO_TLSEXT
2281 int ssl3_get_new_session_ticket(SSL
*s
)
2283 int ok
,al
,ret
=0, ticklen
;
2285 const unsigned char *p
;
2288 n
=s
->method
->ssl_get_message(s
,
2289 SSL3_ST_CR_SESSION_TICKET_A
,
2290 SSL3_ST_CR_SESSION_TICKET_B
,
2298 if (s
->s3
->tmp
.message_type
== SSL3_MT_FINISHED
)
2300 s
->s3
->tmp
.reuse_message
=1;
2303 if (s
->s3
->tmp
.message_type
!= SSL3_MT_NEWSESSION_TICKET
)
2305 al
=SSL_AD_UNEXPECTED_MESSAGE
;
2306 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_BAD_MESSAGE_TYPE
);
2311 /* need at least ticket_lifetime_hint + ticket length */
2312 al
= SSL_AD_DECODE_ERROR
;
2313 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_LENGTH_MISMATCH
);
2317 p
=d
=(unsigned char *)s
->init_msg
;
2318 n2l(p
, s
->session
->tlsext_tick_lifetime_hint
);
2320 /* ticket_lifetime_hint + ticket_length + ticket */
2321 if (ticklen
+ 6 != n
)
2323 al
= SSL_AD_DECODE_ERROR
;
2324 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_LENGTH_MISMATCH
);
2327 if (s
->session
->tlsext_tick
)
2329 OPENSSL_free(s
->session
->tlsext_tick
);
2330 s
->session
->tlsext_ticklen
= 0;
2332 s
->session
->tlsext_tick
= OPENSSL_malloc(ticklen
);
2333 if (!s
->session
->tlsext_tick
)
2335 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,ERR_R_MALLOC_FAILURE
);
2338 memcpy(s
->session
->tlsext_tick
, p
, ticklen
);
2339 s
->session
->tlsext_ticklen
= ticklen
;
2340 /* There are two ways to detect a resumed ticket session.
2341 * One is to set an appropriate session ID and then the server
2342 * must return a match in ServerHello. This allows the normal
2343 * client session ID matching to work and we know much
2344 * earlier that the ticket has been accepted.
2346 * The other way is to set zero length session ID when the
2347 * ticket is presented and rely on the handshake to determine
2348 * session resumption.
2350 * We choose the former approach because this fits in with
2351 * assumptions elsewhere in OpenSSL. The session ID is set
2352 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2355 EVP_Digest(p
, ticklen
,
2356 s
->session
->session_id
, &s
->session
->session_id_length
,
2357 #ifndef OPENSSL_NO_SHA256
2358 EVP_sha256(), NULL
);
2365 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
2370 int ssl3_get_cert_status(SSL
*s
)
2373 unsigned long resplen
,n
;
2374 const unsigned char *p
;
2376 n
=s
->method
->ssl_get_message(s
,
2377 SSL3_ST_CR_CERT_STATUS_A
,
2378 SSL3_ST_CR_CERT_STATUS_B
,
2379 SSL3_MT_CERTIFICATE_STATUS
,
2383 if (!ok
) return((int)n
);
2386 /* need at least status type + length */
2387 al
= SSL_AD_DECODE_ERROR
;
2388 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_LENGTH_MISMATCH
);
2391 p
= (unsigned char *)s
->init_msg
;
2392 if (*p
++ != TLSEXT_STATUSTYPE_ocsp
)
2394 al
= SSL_AD_DECODE_ERROR
;
2395 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_UNSUPPORTED_STATUS_TYPE
);
2399 if (resplen
+ 4 != n
)
2401 al
= SSL_AD_DECODE_ERROR
;
2402 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_LENGTH_MISMATCH
);
2405 if (s
->tlsext_ocsp_resp
)
2406 OPENSSL_free(s
->tlsext_ocsp_resp
);
2407 s
->tlsext_ocsp_resp
= BUF_memdup(p
, resplen
);
2408 if (!s
->tlsext_ocsp_resp
)
2410 al
= SSL_AD_INTERNAL_ERROR
;
2411 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,ERR_R_MALLOC_FAILURE
);
2414 s
->tlsext_ocsp_resplen
= resplen
;
2415 if (s
->ctx
->tlsext_status_cb
)
2418 ret
= s
->ctx
->tlsext_status_cb(s
, s
->ctx
->tlsext_status_arg
);
2421 al
= SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE
;
2422 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_INVALID_STATUS_RESPONSE
);
2427 al
= SSL_AD_INTERNAL_ERROR
;
2428 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,ERR_R_MALLOC_FAILURE
);
2434 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
2439 int ssl3_get_server_done(SSL
*s
)
2444 n
=s
->method
->ssl_get_message(s
,
2445 SSL3_ST_CR_SRVR_DONE_A
,
2446 SSL3_ST_CR_SRVR_DONE_B
,
2447 SSL3_MT_SERVER_DONE
,
2448 30, /* should be very small, like 0 :-) */
2451 if (!ok
) return((int)n
);
2454 /* should contain no data */
2455 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2456 SSLerr(SSL_F_SSL3_GET_SERVER_DONE
,SSL_R_LENGTH_MISMATCH
);
2464 int ssl3_send_client_key_exchange(SSL
*s
)
2468 unsigned long alg_k
;
2469 #ifndef OPENSSL_NO_RSA
2471 EVP_PKEY
*pkey
=NULL
;
2473 #ifndef OPENSSL_NO_KRB5
2475 #endif /* OPENSSL_NO_KRB5 */
2476 #ifndef OPENSSL_NO_ECDH
2477 EC_KEY
*clnt_ecdh
= NULL
;
2478 const EC_POINT
*srvr_ecpoint
= NULL
;
2479 EVP_PKEY
*srvr_pub_pkey
= NULL
;
2480 unsigned char *encodedPoint
= NULL
;
2481 int encoded_pt_len
= 0;
2482 BN_CTX
* bn_ctx
= NULL
;
2485 if (s
->state
== SSL3_ST_CW_KEY_EXCH_A
)
2487 p
= ssl_handshake_start(s
);
2489 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
2491 /* Fool emacs indentation */
2493 #ifndef OPENSSL_NO_RSA
2494 else if (alg_k
& SSL_kRSA
)
2497 unsigned char tmp_buf
[SSL_MAX_MASTER_KEY_LENGTH
];
2499 if (s
->session
->sess_cert
== NULL
)
2501 /* We should always have a server certificate with SSL_kRSA. */
2502 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
2506 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
2507 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
2510 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
2511 if ((pkey
== NULL
) ||
2512 (pkey
->type
!= EVP_PKEY_RSA
) ||
2513 (pkey
->pkey
.rsa
== NULL
))
2515 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
2519 EVP_PKEY_free(pkey
);
2522 tmp_buf
[0]=s
->client_version
>>8;
2523 tmp_buf
[1]=s
->client_version
&0xff;
2524 if (RAND_bytes(&(tmp_buf
[2]),sizeof tmp_buf
-2) <= 0)
2527 s
->session
->master_key_length
=sizeof tmp_buf
;
2530 /* Fix buf for TLS and beyond */
2531 if (s
->version
> SSL3_VERSION
)
2533 n
=RSA_public_encrypt(sizeof tmp_buf
,
2534 tmp_buf
,p
,rsa
,RSA_PKCS1_PADDING
);
2536 if (s
->options
& SSL_OP_PKCS1_CHECK_1
) p
[1]++;
2537 if (s
->options
& SSL_OP_PKCS1_CHECK_2
) tmp_buf
[0]=0x70;
2541 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_BAD_RSA_ENCRYPT
);
2545 /* Fix buf for TLS and beyond */
2546 if (s
->version
> SSL3_VERSION
)
2552 s
->session
->master_key_length
=
2553 s
->method
->ssl3_enc
->generate_master_secret(s
,
2554 s
->session
->master_key
,
2555 tmp_buf
,sizeof tmp_buf
);
2556 OPENSSL_cleanse(tmp_buf
,sizeof tmp_buf
);
2559 #ifndef OPENSSL_NO_KRB5
2560 else if (alg_k
& SSL_kKRB5
)
2562 krb5_error_code krb5rc
;
2563 KSSL_CTX
*kssl_ctx
= s
->kssl_ctx
;
2564 /* krb5_data krb5_ap_req; */
2565 krb5_data
*enc_ticket
;
2566 krb5_data authenticator
, *authp
= NULL
;
2567 EVP_CIPHER_CTX ciph_ctx
;
2568 const EVP_CIPHER
*enc
= NULL
;
2569 unsigned char iv
[EVP_MAX_IV_LENGTH
];
2570 unsigned char tmp_buf
[SSL_MAX_MASTER_KEY_LENGTH
];
2571 unsigned char epms
[SSL_MAX_MASTER_KEY_LENGTH
2572 + EVP_MAX_IV_LENGTH
];
2573 int padl
, outl
= sizeof(epms
);
2575 EVP_CIPHER_CTX_init(&ciph_ctx
);
2578 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2580 #endif /* KSSL_DEBUG */
2584 if (KRB5SENDAUTH
) authp
= &authenticator
;
2585 #endif /* KRB5SENDAUTH */
2587 krb5rc
= kssl_cget_tkt(kssl_ctx
, &enc_ticket
, authp
,
2589 enc
= kssl_map_enc(kssl_ctx
->enctype
);
2594 printf("kssl_cget_tkt rtn %d\n", krb5rc
);
2595 if (krb5rc
&& kssl_err
.text
)
2596 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err
.text
);
2598 #endif /* KSSL_DEBUG */
2602 ssl3_send_alert(s
,SSL3_AL_FATAL
,
2603 SSL_AD_HANDSHAKE_FAILURE
);
2604 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2609 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2610 ** in place of RFC 2712 KerberosWrapper, as in:
2612 ** Send ticket (copy to *p, set n = length)
2613 ** n = krb5_ap_req.length;
2614 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2615 ** if (krb5_ap_req.data)
2616 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2618 ** Now using real RFC 2712 KerberosWrapper
2619 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2620 ** Note: 2712 "opaque" types are here replaced
2621 ** with a 2-byte length followed by the value.
2623 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2624 ** Where "xx xx" = length bytes. Shown here with
2625 ** optional authenticator omitted.
2628 /* KerberosWrapper.Ticket */
2629 s2n(enc_ticket
->length
,p
);
2630 memcpy(p
, enc_ticket
->data
, enc_ticket
->length
);
2631 p
+= enc_ticket
->length
;
2632 n
= enc_ticket
->length
+ 2;
2634 /* KerberosWrapper.Authenticator */
2635 if (authp
&& authp
->length
)
2637 s2n(authp
->length
,p
);
2638 memcpy(p
, authp
->data
, authp
->length
);
2640 n
+= authp
->length
+ 2;
2648 s2n(0,p
);/* null authenticator length */
2652 tmp_buf
[0]=s
->client_version
>>8;
2653 tmp_buf
[1]=s
->client_version
&0xff;
2654 if (RAND_bytes(&(tmp_buf
[2]),sizeof tmp_buf
-2) <= 0)
2657 /* 20010420 VRS. Tried it this way; failed.
2658 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2659 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2660 ** kssl_ctx->length);
2661 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2664 memset(iv
, 0, sizeof iv
); /* per RFC 1510 */
2665 EVP_EncryptInit_ex(&ciph_ctx
,enc
, NULL
,
2667 EVP_EncryptUpdate(&ciph_ctx
,epms
,&outl
,tmp_buf
,
2669 EVP_EncryptFinal_ex(&ciph_ctx
,&(epms
[outl
]),&padl
);
2671 if (outl
> (int)sizeof epms
)
2673 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
2676 EVP_CIPHER_CTX_cleanup(&ciph_ctx
);
2678 /* KerberosWrapper.EncryptedPreMasterSecret */
2680 memcpy(p
, epms
, outl
);
2684 s
->session
->master_key_length
=
2685 s
->method
->ssl3_enc
->generate_master_secret(s
,
2686 s
->session
->master_key
,
2687 tmp_buf
, sizeof tmp_buf
);
2689 OPENSSL_cleanse(tmp_buf
, sizeof tmp_buf
);
2690 OPENSSL_cleanse(epms
, outl
);
2693 #ifndef OPENSSL_NO_DH
2694 else if (alg_k
& (SSL_kDHE
|SSL_kDHr
|SSL_kDHd
))
2696 DH
*dh_srvr
,*dh_clnt
;
2697 SESS_CERT
*scert
= s
->session
->sess_cert
;
2701 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
2702 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_UNEXPECTED_MESSAGE
);
2706 if (scert
->peer_dh_tmp
!= NULL
)
2707 dh_srvr
=scert
->peer_dh_tmp
;
2710 /* we get them from the cert */
2711 int idx
= scert
->peer_cert_type
;
2712 EVP_PKEY
*spkey
= NULL
;
2715 spkey
= X509_get_pubkey(
2716 scert
->peer_pkeys
[idx
].x509
);
2719 dh_srvr
= EVP_PKEY_get1_DH(spkey
);
2720 EVP_PKEY_free(spkey
);
2722 if (dh_srvr
== NULL
)
2724 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2725 ERR_R_INTERNAL_ERROR
);
2729 if (s
->s3
->flags
& TLS1_FLAGS_SKIP_CERT_VERIFY
)
2731 /* Use client certificate key */
2732 EVP_PKEY
*clkey
= s
->cert
->key
->privatekey
;
2735 dh_clnt
= EVP_PKEY_get1_DH(clkey
);
2736 if (dh_clnt
== NULL
)
2738 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2739 ERR_R_INTERNAL_ERROR
);
2745 /* generate a new random key */
2746 if ((dh_clnt
=DHparams_dup(dh_srvr
)) == NULL
)
2748 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2751 if (!DH_generate_key(dh_clnt
))
2753 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2759 /* use the 'p' output buffer for the DH key, but
2760 * make sure to clear it out afterwards */
2762 n
=DH_compute_key(p
,dh_srvr
->pub_key
,dh_clnt
);
2763 if (scert
->peer_dh_tmp
== NULL
)
2768 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2773 /* generate master key from the result */
2774 s
->session
->master_key_length
=
2775 s
->method
->ssl3_enc
->generate_master_secret(s
,
2776 s
->session
->master_key
,p
,n
);
2780 if (s
->s3
->flags
& TLS1_FLAGS_SKIP_CERT_VERIFY
)
2784 /* send off the data */
2785 n
=BN_num_bytes(dh_clnt
->pub_key
);
2787 BN_bn2bin(dh_clnt
->pub_key
,p
);
2793 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2797 #ifndef OPENSSL_NO_ECDH
2798 else if (alg_k
& (SSL_kECDHE
|SSL_kECDHr
|SSL_kECDHe
))
2800 const EC_GROUP
*srvr_group
= NULL
;
2802 int ecdh_clnt_cert
= 0;
2805 if (s
->session
->sess_cert
== NULL
)
2807 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
2808 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_UNEXPECTED_MESSAGE
);
2812 /* Did we send out the client's
2813 * ECDH share for use in premaster
2814 * computation as part of client certificate?
2815 * If so, set ecdh_clnt_cert to 1.
2817 if ((alg_k
& (SSL_kECDHr
|SSL_kECDHe
)) && (s
->cert
!= NULL
))
2819 /* XXX: For now, we do not support client
2820 * authentication using ECDH certificates.
2821 * To add such support, one needs to add
2822 * code that checks for appropriate
2823 * conditions and sets ecdh_clnt_cert to 1.
2824 * For example, the cert have an ECC
2825 * key on the same curve as the server's
2826 * and the key should be authorized for
2829 * One also needs to add code in ssl3_connect
2830 * to skip sending the certificate verify
2833 * if ((s->cert->key->privatekey != NULL) &&
2834 * (s->cert->key->privatekey->type ==
2835 * EVP_PKEY_EC) && ...)
2836 * ecdh_clnt_cert = 1;
2840 if (s
->session
->sess_cert
->peer_ecdh_tmp
!= NULL
)
2842 tkey
= s
->session
->sess_cert
->peer_ecdh_tmp
;
2846 /* Get the Server Public Key from Cert */
2847 srvr_pub_pkey
= X509_get_pubkey(s
->session
-> \
2848 sess_cert
->peer_pkeys
[SSL_PKEY_ECC
].x509
);
2849 if ((srvr_pub_pkey
== NULL
) ||
2850 (srvr_pub_pkey
->type
!= EVP_PKEY_EC
) ||
2851 (srvr_pub_pkey
->pkey
.ec
== NULL
))
2853 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2854 ERR_R_INTERNAL_ERROR
);
2858 tkey
= srvr_pub_pkey
->pkey
.ec
;
2861 srvr_group
= EC_KEY_get0_group(tkey
);
2862 srvr_ecpoint
= EC_KEY_get0_public_key(tkey
);
2864 if ((srvr_group
== NULL
) || (srvr_ecpoint
== NULL
))
2866 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2867 ERR_R_INTERNAL_ERROR
);
2871 if ((clnt_ecdh
=EC_KEY_new()) == NULL
)
2873 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2877 if (!EC_KEY_set_group(clnt_ecdh
, srvr_group
))
2879 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_EC_LIB
);
2884 /* Reuse key info from our certificate
2885 * We only need our private key to perform
2886 * the ECDH computation.
2888 const BIGNUM
*priv_key
;
2889 tkey
= s
->cert
->key
->privatekey
->pkey
.ec
;
2890 priv_key
= EC_KEY_get0_private_key(tkey
);
2891 if (priv_key
== NULL
)
2893 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2896 if (!EC_KEY_set_private_key(clnt_ecdh
, priv_key
))
2898 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_EC_LIB
);
2904 /* Generate a new ECDH key pair */
2905 if (!(EC_KEY_generate_key(clnt_ecdh
)))
2907 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
, ERR_R_ECDH_LIB
);
2912 /* use the 'p' output buffer for the ECDH key, but
2913 * make sure to clear it out afterwards
2916 field_size
= EC_GROUP_get_degree(srvr_group
);
2917 if (field_size
<= 0)
2919 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2923 n
=ECDH_compute_key(p
, (field_size
+7)/8, srvr_ecpoint
, clnt_ecdh
, NULL
);
2926 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2931 /* generate master key from the result */
2932 s
->session
->master_key_length
= s
->method
->ssl3_enc \
2933 -> generate_master_secret(s
,
2934 s
->session
->master_key
,
2937 memset(p
, 0, n
); /* clean up */
2941 /* Send empty client key exch message */
2946 /* First check the size of encoding and
2947 * allocate memory accordingly.
2950 EC_POINT_point2oct(srvr_group
,
2951 EC_KEY_get0_public_key(clnt_ecdh
),
2952 POINT_CONVERSION_UNCOMPRESSED
,
2955 encodedPoint
= (unsigned char *)
2956 OPENSSL_malloc(encoded_pt_len
*
2957 sizeof(unsigned char));
2958 bn_ctx
= BN_CTX_new();
2959 if ((encodedPoint
== NULL
) ||
2962 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2966 /* Encode the public key */
2967 n
= EC_POINT_point2oct(srvr_group
,
2968 EC_KEY_get0_public_key(clnt_ecdh
),
2969 POINT_CONVERSION_UNCOMPRESSED
,
2970 encodedPoint
, encoded_pt_len
, bn_ctx
);
2972 *p
= n
; /* length of encoded point */
2973 /* Encoded point will be copied here */
2975 /* copy the point */
2976 memcpy((unsigned char *)p
, encodedPoint
, n
);
2977 /* increment n to account for length field */
2981 /* Free allocated memory */
2982 BN_CTX_free(bn_ctx
);
2983 if (encodedPoint
!= NULL
) OPENSSL_free(encodedPoint
);
2984 if (clnt_ecdh
!= NULL
)
2985 EC_KEY_free(clnt_ecdh
);
2986 EVP_PKEY_free(srvr_pub_pkey
);
2988 #endif /* !OPENSSL_NO_ECDH */
2989 else if (alg_k
& SSL_kGOST
)
2991 /* GOST key exchange message creation */
2992 EVP_PKEY_CTX
*pkey_ctx
;
2995 unsigned int md_len
;
2997 unsigned char premaster_secret
[32],shared_ukm
[32], tmp
[256];
2998 EVP_MD_CTX
*ukm_hash
;
3001 /* Get server sertificate PKEY and create ctx from it */
3002 peer_cert
=s
->session
->sess_cert
->peer_pkeys
[(keytype
=SSL_PKEY_GOST01
)].x509
;
3004 peer_cert
=s
->session
->sess_cert
->peer_pkeys
[(keytype
=SSL_PKEY_GOST94
)].x509
;
3006 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER
);
3010 pkey_ctx
=EVP_PKEY_CTX_new(pub_key
=X509_get_pubkey(peer_cert
),NULL
);
3011 /* If we have send a certificate, and certificate key
3013 * parameters match those of server certificate, use
3014 * certificate key for key exchange
3017 /* Otherwise, generate ephemeral key pair */
3019 EVP_PKEY_encrypt_init(pkey_ctx
);
3020 /* Generate session key */
3021 RAND_bytes(premaster_secret
,32);
3022 /* If we have client certificate, use its secret as peer key */
3023 if (s
->s3
->tmp
.cert_req
&& s
->cert
->key
->privatekey
) {
3024 if (EVP_PKEY_derive_set_peer(pkey_ctx
,s
->cert
->key
->privatekey
) <=0) {
3025 /* If there was an error - just ignore it. Ephemeral key
3031 /* Compute shared IV and store it in algorithm-specific
3033 ukm_hash
= EVP_MD_CTX_create();
3034 EVP_DigestInit(ukm_hash
,EVP_get_digestbynid(NID_id_GostR3411_94
));
3035 EVP_DigestUpdate(ukm_hash
,s
->s3
->client_random
,SSL3_RANDOM_SIZE
);
3036 EVP_DigestUpdate(ukm_hash
,s
->s3
->server_random
,SSL3_RANDOM_SIZE
);
3037 EVP_DigestFinal_ex(ukm_hash
, shared_ukm
, &md_len
);
3038 EVP_MD_CTX_destroy(ukm_hash
);
3039 if (EVP_PKEY_CTX_ctrl(pkey_ctx
,-1,EVP_PKEY_OP_ENCRYPT
,EVP_PKEY_CTRL_SET_IV
,
3041 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3045 /* Make GOST keytransport blob message */
3046 /*Encapsulate it into sequence */
3047 *(p
++)=V_ASN1_SEQUENCE
| V_ASN1_CONSTRUCTED
;
3049 if (EVP_PKEY_encrypt(pkey_ctx
,tmp
,&msglen
,premaster_secret
,32)<0) {
3050 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3057 *(p
++)= msglen
& 0xff;
3062 *(p
++)= msglen
& 0xff;
3065 memcpy(p
, tmp
, msglen
);
3066 /* Check if pubkey from client certificate was used */
3067 if (EVP_PKEY_CTX_ctrl(pkey_ctx
, -1, -1, EVP_PKEY_CTRL_PEER_KEY
, 2, NULL
) > 0)
3069 /* Set flag "skip certificate verify" */
3070 s
->s3
->flags
|= TLS1_FLAGS_SKIP_CERT_VERIFY
;
3072 EVP_PKEY_CTX_free(pkey_ctx
);
3073 s
->session
->master_key_length
=
3074 s
->method
->ssl3_enc
->generate_master_secret(s
,
3075 s
->session
->master_key
,premaster_secret
,32);
3076 EVP_PKEY_free(pub_key
);
3079 #ifndef OPENSSL_NO_SRP
3080 else if (alg_k
& SSL_kSRP
)
3082 if (s
->srp_ctx
.A
!= NULL
)
3084 /* send off the data */
3085 n
=BN_num_bytes(s
->srp_ctx
.A
);
3087 BN_bn2bin(s
->srp_ctx
.A
,p
);
3092 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
3095 if (s
->session
->srp_username
!= NULL
)
3096 OPENSSL_free(s
->session
->srp_username
);
3097 s
->session
->srp_username
= BUF_strdup(s
->srp_ctx
.login
);
3098 if (s
->session
->srp_username
== NULL
)
3100 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3101 ERR_R_MALLOC_FAILURE
);
3105 if ((s
->session
->master_key_length
= SRP_generate_client_master_secret(s
,s
->session
->master_key
))<0)
3107 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
3112 #ifndef OPENSSL_NO_PSK
3113 else if (alg_k
& SSL_kPSK
)
3115 /* The callback needs PSK_MAX_IDENTITY_LEN + 1 bytes
3116 * to return a \0-terminated identity. The last byte
3117 * is for us for simulating strnlen. */
3118 char identity
[PSK_MAX_IDENTITY_LEN
+ 2];
3119 size_t identity_len
;
3120 unsigned char *t
= NULL
;
3121 unsigned char psk_or_pre_ms
[PSK_MAX_PSK_LEN
*2+4];
3122 unsigned int pre_ms_len
= 0, psk_len
= 0;
3126 if (s
->psk_client_callback
== NULL
)
3128 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3129 SSL_R_PSK_NO_CLIENT_CB
);
3133 memset(identity
, 0, sizeof(identity
));
3134 psk_len
= s
->psk_client_callback(s
, s
->ctx
->psk_identity_hint
,
3135 identity
, sizeof(identity
) - 1,
3136 psk_or_pre_ms
, sizeof(psk_or_pre_ms
));
3137 if (psk_len
> PSK_MAX_PSK_LEN
)
3139 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3140 ERR_R_INTERNAL_ERROR
);
3143 else if (psk_len
== 0)
3145 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3146 SSL_R_PSK_IDENTITY_NOT_FOUND
);
3149 identity
[PSK_MAX_IDENTITY_LEN
+ 1] = '\0';
3150 identity_len
= strlen(identity
);
3151 if (identity_len
> PSK_MAX_IDENTITY_LEN
)
3153 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3154 ERR_R_INTERNAL_ERROR
);
3157 /* create PSK pre_master_secret */
3158 pre_ms_len
= 2+psk_len
+2+psk_len
;
3160 memmove(psk_or_pre_ms
+psk_len
+4, psk_or_pre_ms
, psk_len
);
3162 memset(t
, 0, psk_len
);
3166 if (s
->session
->psk_identity_hint
!= NULL
)
3167 OPENSSL_free(s
->session
->psk_identity_hint
);
3168 s
->session
->psk_identity_hint
= BUF_strdup(s
->ctx
->psk_identity_hint
);
3169 if (s
->ctx
->psk_identity_hint
!= NULL
&&
3170 s
->session
->psk_identity_hint
== NULL
)
3172 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3173 ERR_R_MALLOC_FAILURE
);
3177 if (s
->session
->psk_identity
!= NULL
)
3178 OPENSSL_free(s
->session
->psk_identity
);
3179 s
->session
->psk_identity
= BUF_strdup(identity
);
3180 if (s
->session
->psk_identity
== NULL
)
3182 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3183 ERR_R_MALLOC_FAILURE
);
3187 s
->session
->master_key_length
=
3188 s
->method
->ssl3_enc
->generate_master_secret(s
,
3189 s
->session
->master_key
,
3190 psk_or_pre_ms
, pre_ms_len
);
3191 s2n(identity_len
, p
);
3192 memcpy(p
, identity
, identity_len
);
3193 n
= 2 + identity_len
;
3196 OPENSSL_cleanse(identity
, sizeof(identity
));
3197 OPENSSL_cleanse(psk_or_pre_ms
, sizeof(psk_or_pre_ms
));
3200 ssl3_send_alert(s
, SSL3_AL_FATAL
, SSL_AD_HANDSHAKE_FAILURE
);
3207 ssl3_send_alert(s
, SSL3_AL_FATAL
,
3208 SSL_AD_HANDSHAKE_FAILURE
);
3209 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3210 ERR_R_INTERNAL_ERROR
);
3214 ssl_set_handshake_header(s
, SSL3_MT_CLIENT_KEY_EXCHANGE
, n
);
3215 s
->state
=SSL3_ST_CW_KEY_EXCH_B
;
3218 /* SSL3_ST_CW_KEY_EXCH_B */
3219 return ssl_do_write(s
);
3221 #ifndef OPENSSL_NO_ECDH
3222 BN_CTX_free(bn_ctx
);
3223 if (encodedPoint
!= NULL
) OPENSSL_free(encodedPoint
);
3224 if (clnt_ecdh
!= NULL
)
3225 EC_KEY_free(clnt_ecdh
);
3226 EVP_PKEY_free(srvr_pub_pkey
);
3231 int ssl3_send_client_verify(SSL
*s
)
3234 unsigned char data
[MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
];
3236 EVP_PKEY_CTX
*pctx
=NULL
;
3242 EVP_MD_CTX_init(&mctx
);
3244 if (s
->state
== SSL3_ST_CW_CERT_VRFY_A
)
3246 p
= ssl_handshake_start(s
);
3247 pkey
=s
->cert
->key
->privatekey
;
3248 /* Create context from key and test if sha1 is allowed as digest */
3249 pctx
= EVP_PKEY_CTX_new(pkey
,NULL
);
3250 EVP_PKEY_sign_init(pctx
);
3251 if (EVP_PKEY_CTX_set_signature_md(pctx
, EVP_sha1())>0)
3253 if (!SSL_USE_SIGALGS(s
))
3254 s
->method
->ssl3_enc
->cert_verify_mac(s
,
3256 &(data
[MD5_DIGEST_LENGTH
]));
3262 /* For TLS v1.2 send signature algorithm and signature
3263 * using agreed digest and cached handshake records.
3265 if (SSL_USE_SIGALGS(s
))
3269 const EVP_MD
*md
= s
->cert
->key
->digest
;
3270 hdatalen
= BIO_get_mem_data(s
->s3
->handshake_buffer
,
3272 if (hdatalen
<= 0 || !tls12_get_sigandhash(p
, pkey
, md
))
3274 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3275 ERR_R_INTERNAL_ERROR
);
3280 fprintf(stderr
, "Using TLS 1.2 with client alg %s\n",
3283 if (!EVP_SignInit_ex(&mctx
, md
, NULL
)
3284 || !EVP_SignUpdate(&mctx
, hdata
, hdatalen
)
3285 || !EVP_SignFinal(&mctx
, p
+ 2, &u
, pkey
))
3287 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3293 if (!ssl3_digest_cached_records(s
))
3297 #ifndef OPENSSL_NO_RSA
3298 if (pkey
->type
== EVP_PKEY_RSA
)
3300 s
->method
->ssl3_enc
->cert_verify_mac(s
,
3303 if (RSA_sign(NID_md5_sha1
, data
,
3304 MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
,
3305 &(p
[2]), &u
, pkey
->pkey
.rsa
) <= 0 )
3307 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_RSA_LIB
);
3315 #ifndef OPENSSL_NO_DSA
3316 if (pkey
->type
== EVP_PKEY_DSA
)
3318 if (!DSA_sign(pkey
->save_type
,
3319 &(data
[MD5_DIGEST_LENGTH
]),
3320 SHA_DIGEST_LENGTH
,&(p
[2]),
3321 (unsigned int *)&j
,pkey
->pkey
.dsa
))
3323 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_DSA_LIB
);
3331 #ifndef OPENSSL_NO_ECDSA
3332 if (pkey
->type
== EVP_PKEY_EC
)
3334 if (!ECDSA_sign(pkey
->save_type
,
3335 &(data
[MD5_DIGEST_LENGTH
]),
3336 SHA_DIGEST_LENGTH
,&(p
[2]),
3337 (unsigned int *)&j
,pkey
->pkey
.ec
))
3339 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3348 if (pkey
->type
== NID_id_GostR3410_94
|| pkey
->type
== NID_id_GostR3410_2001
)
3350 unsigned char signbuf
[64];
3353 s
->method
->ssl3_enc
->cert_verify_mac(s
,
3354 NID_id_GostR3411_94
,
3356 if (EVP_PKEY_sign(pctx
, signbuf
, &sigsize
, data
, 32) <= 0) {
3357 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3358 ERR_R_INTERNAL_ERROR
);
3361 for (i
=63,j
=0; i
>=0; j
++, i
--) {
3369 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_INTERNAL_ERROR
);
3372 ssl_set_handshake_header(s
, SSL3_MT_CERTIFICATE_VERIFY
, n
);
3373 s
->state
=SSL3_ST_CW_CERT_VRFY_B
;
3375 EVP_MD_CTX_cleanup(&mctx
);
3376 EVP_PKEY_CTX_free(pctx
);
3377 return ssl_do_write(s
);
3379 EVP_MD_CTX_cleanup(&mctx
);
3380 EVP_PKEY_CTX_free(pctx
);
3384 /* Check a certificate can be used for client authentication. Currently
3385 * check cert exists, if we have a suitable digest for TLS 1.2 if
3386 * static DH client certificates can be used and optionally checks
3387 * suitability for Suite B.
3389 static int ssl3_check_client_certificate(SSL
*s
)
3391 unsigned long alg_k
;
3392 if (!s
->cert
|| !s
->cert
->key
->x509
|| !s
->cert
->key
->privatekey
)
3394 /* If no suitable signature algorithm can't use certificate */
3395 if (SSL_USE_SIGALGS(s
) && !s
->cert
->key
->digest
)
3397 /* If strict mode check suitability of chain before using it.
3398 * This also adjusts suite B digest if necessary.
3400 if (s
->cert
->cert_flags
& SSL_CERT_FLAGS_CHECK_TLS_STRICT
&&
3401 !tls1_check_chain(s
, NULL
, NULL
, NULL
, -2))
3403 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
3404 /* See if we can use client certificate for fixed DH */
3405 if (alg_k
& (SSL_kDHr
|SSL_kDHd
))
3407 SESS_CERT
*scert
= s
->session
->sess_cert
;
3408 int i
= scert
->peer_cert_type
;
3409 EVP_PKEY
*clkey
= NULL
, *spkey
= NULL
;
3410 clkey
= s
->cert
->key
->privatekey
;
3411 /* If client key not DH assume it can be used */
3412 if (EVP_PKEY_id(clkey
) != EVP_PKEY_DH
)
3415 spkey
= X509_get_pubkey(scert
->peer_pkeys
[i
].x509
);
3418 /* Compare server and client parameters */
3419 i
= EVP_PKEY_cmp_parameters(clkey
, spkey
);
3420 EVP_PKEY_free(spkey
);
3424 s
->s3
->flags
|= TLS1_FLAGS_SKIP_CERT_VERIFY
;
3429 int ssl3_send_client_certificate(SSL
*s
)
3432 EVP_PKEY
*pkey
=NULL
;
3435 if (s
->state
== SSL3_ST_CW_CERT_A
)
3437 /* Let cert callback update client certificates if required */
3438 if (s
->cert
->cert_cb
)
3440 i
= s
->cert
->cert_cb(s
, s
->cert
->cert_cb_arg
);
3443 s
->rwstate
=SSL_X509_LOOKUP
;
3448 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_INTERNAL_ERROR
);
3451 s
->rwstate
=SSL_NOTHING
;
3453 if (ssl3_check_client_certificate(s
))
3454 s
->state
=SSL3_ST_CW_CERT_C
;
3456 s
->state
=SSL3_ST_CW_CERT_B
;
3459 /* We need to get a client cert */
3460 if (s
->state
== SSL3_ST_CW_CERT_B
)
3462 /* If we get an error, we need to
3463 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3464 * We then get retied later */
3466 i
= ssl_do_client_cert_cb(s
, &x509
, &pkey
);
3469 s
->rwstate
=SSL_X509_LOOKUP
;
3472 s
->rwstate
=SSL_NOTHING
;
3473 if ((i
== 1) && (pkey
!= NULL
) && (x509
!= NULL
))
3475 s
->state
=SSL3_ST_CW_CERT_B
;
3476 if ( !SSL_use_certificate(s
,x509
) ||
3477 !SSL_use_PrivateKey(s
,pkey
))
3483 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE
,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK
);
3486 if (x509
!= NULL
) X509_free(x509
);
3487 if (pkey
!= NULL
) EVP_PKEY_free(pkey
);
3488 if (i
&& !ssl3_check_client_certificate(s
))
3492 if (s
->version
== SSL3_VERSION
)
3494 s
->s3
->tmp
.cert_req
=0;
3495 ssl3_send_alert(s
,SSL3_AL_WARNING
,SSL_AD_NO_CERTIFICATE
);
3500 s
->s3
->tmp
.cert_req
=2;
3504 /* Ok, we have a cert */
3505 s
->state
=SSL3_ST_CW_CERT_C
;
3508 if (s
->state
== SSL3_ST_CW_CERT_C
)
3510 s
->state
=SSL3_ST_CW_CERT_D
;
3511 if (!ssl3_output_cert_chain(s
,
3512 (s
->s3
->tmp
.cert_req
== 2)?NULL
:s
->cert
->key
))
3514 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE
, ERR_R_INTERNAL_ERROR
);
3515 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_INTERNAL_ERROR
);
3519 /* SSL3_ST_CW_CERT_D */
3520 return ssl_do_write(s
);
3523 #define has_bits(i,m) (((i)&(m)) == (m))
3525 int ssl3_check_cert_and_algorithm(SSL
*s
)
3529 EVP_PKEY
*pkey
=NULL
;
3531 #ifndef OPENSSL_NO_RSA
3534 #ifndef OPENSSL_NO_DH
3538 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
3539 alg_a
=s
->s3
->tmp
.new_cipher
->algorithm_auth
;
3541 /* we don't have a certificate */
3542 if ((alg_a
& (SSL_aNULL
|SSL_aKRB5
)) || (alg_k
& SSL_kPSK
))
3545 sc
=s
->session
->sess_cert
;
3548 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,ERR_R_INTERNAL_ERROR
);
3552 #ifndef OPENSSL_NO_RSA
3553 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
3555 #ifndef OPENSSL_NO_DH
3556 dh
=s
->session
->sess_cert
->peer_dh_tmp
;
3559 /* This is the passed certificate */
3561 idx
=sc
->peer_cert_type
;
3562 #ifndef OPENSSL_NO_ECDH
3563 if (idx
== SSL_PKEY_ECC
)
3565 if (ssl_check_srvr_ecc_cert_and_alg(sc
->peer_pkeys
[idx
].x509
,
3567 { /* check failed */
3568 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_BAD_ECC_CERT
);
3576 else if (alg_a
& SSL_aECDSA
)
3578 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_ECDSA_SIGNING_CERT
);
3581 else if (alg_k
& (SSL_kECDHr
|SSL_kECDHe
))
3583 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_ECDH_CERT
);
3587 pkey
=X509_get_pubkey(sc
->peer_pkeys
[idx
].x509
);
3588 i
=X509_certificate_type(sc
->peer_pkeys
[idx
].x509
,pkey
);
3589 EVP_PKEY_free(pkey
);
3592 /* Check that we have a certificate if we require one */
3593 if ((alg_a
& SSL_aRSA
) && !has_bits(i
,EVP_PK_RSA
|EVP_PKT_SIGN
))
3595 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_SIGNING_CERT
);
3598 #ifndef OPENSSL_NO_DSA
3599 else if ((alg_a
& SSL_aDSS
) && !has_bits(i
,EVP_PK_DSA
|EVP_PKT_SIGN
))
3601 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DSA_SIGNING_CERT
);
3605 #ifndef OPENSSL_NO_RSA
3606 if ((alg_k
& SSL_kRSA
) &&
3607 !(has_bits(i
,EVP_PK_RSA
|EVP_PKT_ENC
) || (rsa
!= NULL
)))
3609 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_ENCRYPTING_CERT
);
3613 #ifndef OPENSSL_NO_DH
3614 if ((alg_k
& SSL_kDHE
) &&
3615 !(has_bits(i
,EVP_PK_DH
|EVP_PKT_EXCH
) || (dh
!= NULL
)))
3617 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_KEY
);
3620 else if ((alg_k
& SSL_kDHr
) && !SSL_USE_SIGALGS(s
) &&
3621 !has_bits(i
,EVP_PK_DH
|EVP_PKS_RSA
))
3623 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_RSA_CERT
);
3626 #ifndef OPENSSL_NO_DSA
3627 else if ((alg_k
& SSL_kDHd
) && !SSL_USE_SIGALGS(s
) &&
3628 !has_bits(i
,EVP_PK_DH
|EVP_PKS_DSA
))
3630 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_DSA_CERT
);
3636 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) && !has_bits(i
,EVP_PKT_EXP
))
3638 #ifndef OPENSSL_NO_RSA
3639 if (alg_k
& SSL_kRSA
)
3642 || RSA_size(rsa
)*8 > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
3644 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_RSA_KEY
);
3650 #ifndef OPENSSL_NO_DH
3651 if (alg_k
& (SSL_kDHE
|SSL_kDHr
|SSL_kDHd
))
3654 || DH_size(dh
)*8 > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
3656 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_DH_KEY
);
3663 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE
);
3669 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_HANDSHAKE_FAILURE
);
3674 /* Check to see if handshake is full or resumed. Usually this is just a
3675 * case of checking to see if a cache hit has occurred. In the case of
3676 * session tickets we have to check the next message to be sure.
3679 #ifndef OPENSSL_NO_TLSEXT
3680 # ifndef OPENSSL_NO_NEXTPROTONEG
3681 int ssl3_send_next_proto(SSL
*s
)
3683 unsigned int len
, padding_len
;
3686 if (s
->state
== SSL3_ST_CW_NEXT_PROTO_A
)
3688 len
= s
->next_proto_negotiated_len
;
3689 padding_len
= 32 - ((len
+ 2) % 32);
3690 d
= (unsigned char *)s
->init_buf
->data
;
3692 memcpy(d
+ 5, s
->next_proto_negotiated
, len
);
3693 d
[5 + len
] = padding_len
;
3694 memset(d
+ 6 + len
, 0, padding_len
);
3695 *(d
++)=SSL3_MT_NEXT_PROTO
;
3696 l2n3(2 + len
+ padding_len
, d
);
3697 s
->state
= SSL3_ST_CW_NEXT_PROTO_B
;
3698 s
->init_num
= 4 + 2 + len
+ padding_len
;
3702 return ssl3_do_write(s
, SSL3_RT_HANDSHAKE
);
3707 int ssl_do_client_cert_cb(SSL
*s
, X509
**px509
, EVP_PKEY
**ppkey
)
3710 #ifndef OPENSSL_NO_ENGINE
3711 if (s
->ctx
->client_cert_engine
)
3713 i
= ENGINE_load_ssl_client_cert(s
->ctx
->client_cert_engine
, s
,
3714 SSL_get_client_CA_list(s
),
3715 px509
, ppkey
, NULL
, NULL
, NULL
);
3720 if (s
->ctx
->client_cert_cb
)
3721 i
= s
->ctx
->client_cert_cb(s
,px509
,ppkey
);