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 const SSL_METHOD
*ssl3_get_client_method(int ver
);
171 static int ca_dn_cmp(const X509_NAME
* const *a
,const X509_NAME
* const *b
);
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
)
186 int ssl3_connect(SSL
*s
)
189 unsigned long Time
=(unsigned long)time(NULL
);
190 void (*cb
)(const SSL
*ssl
,int type
,int val
)=NULL
;
192 int new_state
,state
,skip
=0;
194 RAND_add(&Time
,sizeof(Time
),0);
198 if (s
->info_callback
!= NULL
)
200 else if (s
->ctx
->info_callback
!= NULL
)
201 cb
=s
->ctx
->info_callback
;
204 if (!SSL_in_init(s
) || SSL_in_before(s
)) SSL_clear(s
);
206 #ifndef OPENSSL_NO_HEARTBEATS
207 /* If we're awaiting a HeartbeatResponse, pretend we
208 * already got and don't await it anymore, because
209 * Heartbeats don't make sense during handshakes anyway.
211 if (s
->tlsext_hb_pending
)
213 s
->tlsext_hb_pending
= 0;
224 case SSL_ST_RENEGOTIATE
:
226 s
->state
=SSL_ST_CONNECT
;
227 s
->ctx
->stats
.sess_connect_renegotiate
++;
231 case SSL_ST_BEFORE
|SSL_ST_CONNECT
:
232 case SSL_ST_OK
|SSL_ST_CONNECT
:
235 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_START
,1);
237 if ((s
->version
& 0xff00 ) != 0x0300)
239 SSLerr(SSL_F_SSL3_CONNECT
, ERR_R_INTERNAL_ERROR
);
244 if (!ssl_security(s
, SSL_SECOP_VERSION
, 0,
247 SSLerr(SSL_F_SSL3_CONNECT
, SSL_R_VERSION_TOO_LOW
);
251 /* s->version=SSL3_VERSION; */
252 s
->type
=SSL_ST_CONNECT
;
254 if (s
->init_buf
== NULL
)
256 if ((buf
=BUF_MEM_new()) == NULL
)
261 if (!BUF_MEM_grow(buf
,SSL3_RT_MAX_PLAIN_LENGTH
))
270 if (!ssl3_setup_buffers(s
)) { ret
= -1; goto end
; }
272 /* setup buffing BIO */
273 if (!ssl_init_wbio_buffer(s
,0)) { ret
= -1; goto end
; }
275 /* don't push the buffering BIO quite yet */
277 ssl3_init_finished_mac(s
);
279 s
->state
=SSL3_ST_CW_CLNT_HELLO_A
;
280 s
->ctx
->stats
.sess_connect
++;
284 case SSL3_ST_CW_CLNT_HELLO_A
:
285 case SSL3_ST_CW_CLNT_HELLO_B
:
288 ret
=ssl3_client_hello(s
);
289 if (ret
<= 0) goto end
;
290 s
->state
=SSL3_ST_CR_SRVR_HELLO_A
;
293 /* turn on buffering for the next lot of output */
294 if (s
->bbio
!= s
->wbio
)
295 s
->wbio
=BIO_push(s
->bbio
,s
->wbio
);
299 case SSL3_ST_CR_SRVR_HELLO_A
:
300 case SSL3_ST_CR_SRVR_HELLO_B
:
301 ret
=ssl3_get_server_hello(s
);
302 if (ret
<= 0) goto end
;
306 s
->state
=SSL3_ST_CR_FINISHED_A
;
307 #ifndef OPENSSL_NO_TLSEXT
308 if (s
->tlsext_ticket_expected
)
310 /* receive renewed session ticket */
311 s
->state
=SSL3_ST_CR_SESSION_TICKET_A
;
317 s
->state
=SSL3_ST_CR_CERT_A
;
321 #ifndef OPENSSL_NO_TLSEXT
322 case SSL3_ST_CR_SUPPLEMENTAL_DATA_A
:
323 case SSL3_ST_CR_SUPPLEMENTAL_DATA_B
:
324 ret
= tls1_get_server_supplemental_data(s
);
325 if (ret
<= 0) goto end
;
326 s
->state
=SSL3_ST_CR_CERT_A
;
330 case SSL3_ST_CR_CERT_A
:
331 case SSL3_ST_CR_CERT_B
:
332 #ifndef OPENSSL_NO_TLSEXT
333 ret
=ssl3_check_finished(s
);
334 if (ret
<= 0) goto end
;
337 s
->state
=SSL3_ST_CR_SUPPLEMENTAL_DATA_A
;
344 if (s
->tlsext_ticket_expected
)
345 s
->state
=SSL3_ST_CR_SESSION_TICKET_A
;
347 s
->state
=SSL3_ST_CR_FINISHED_A
;
352 /* Check if it is anon DH/ECDH */
354 if (!(s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aNULL
) &&
355 !(s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kPSK
))
357 ret
=ssl3_get_server_certificate(s
);
358 if (ret
<= 0) goto end
;
359 #ifndef OPENSSL_NO_TLSEXT
360 if (s
->tlsext_status_expected
)
361 s
->state
=SSL3_ST_CR_CERT_STATUS_A
;
363 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
368 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
375 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
380 case SSL3_ST_CR_KEY_EXCH_A
:
381 case SSL3_ST_CR_KEY_EXCH_B
:
382 ret
=ssl3_get_key_exchange(s
);
383 if (ret
<= 0) goto end
;
384 s
->state
=SSL3_ST_CR_CERT_REQ_A
;
387 /* at this point we check that we have the
388 * required stuff from the server */
389 if (!ssl3_check_cert_and_algorithm(s
))
396 case SSL3_ST_CR_CERT_REQ_A
:
397 case SSL3_ST_CR_CERT_REQ_B
:
398 ret
=ssl3_get_certificate_request(s
);
399 if (ret
<= 0) goto end
;
400 s
->state
=SSL3_ST_CR_SRVR_DONE_A
;
404 case SSL3_ST_CR_SRVR_DONE_A
:
405 case SSL3_ST_CR_SRVR_DONE_B
:
406 ret
=ssl3_get_server_done(s
);
407 if (ret
<= 0) goto end
;
408 #ifndef OPENSSL_NO_SRP
409 if (s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kSRP
)
411 if ((ret
= SRP_Calc_A_param(s
))<=0)
413 SSLerr(SSL_F_SSL3_CONNECT
,SSL_R_SRP_A_CALC
);
414 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_INTERNAL_ERROR
);
419 #ifndef OPENSSL_NO_TLSEXT
420 s
->state
=SSL3_ST_CW_SUPPLEMENTAL_DATA_A
;
422 if (s
->s3
->tmp
.cert_req
)
423 s
->state
=SSL3_ST_CW_CERT_A
;
425 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
431 case SSL3_ST_CW_CERT_A
:
432 case SSL3_ST_CW_CERT_B
:
433 case SSL3_ST_CW_CERT_C
:
434 case SSL3_ST_CW_CERT_D
:
435 ret
=ssl3_send_client_certificate(s
);
436 if (ret
<= 0) goto end
;
437 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
441 case SSL3_ST_CW_KEY_EXCH_A
:
442 case SSL3_ST_CW_KEY_EXCH_B
:
443 ret
=ssl3_send_client_key_exchange(s
);
444 if (ret
<= 0) goto end
;
445 /* EAY EAY EAY need to check for DH fix cert
447 /* For TLS, cert_req is set to 2, so a cert chain
448 * of nothing is sent, but no verify packet is sent */
449 /* XXX: For now, we do not support client
450 * authentication in ECDH cipher suites with
451 * ECDH (rather than ECDSA) certificates.
452 * We need to skip the certificate verify
453 * message when client's ECDH public key is sent
454 * inside the client certificate.
456 if (s
->s3
->tmp
.cert_req
== 1)
458 s
->state
=SSL3_ST_CW_CERT_VRFY_A
;
462 s
->state
=SSL3_ST_CW_CHANGE_A
;
463 s
->s3
->change_cipher_spec
=0;
465 if (s
->s3
->flags
& TLS1_FLAGS_SKIP_CERT_VERIFY
)
467 s
->state
=SSL3_ST_CW_CHANGE_A
;
468 s
->s3
->change_cipher_spec
=0;
474 case SSL3_ST_CW_CERT_VRFY_A
:
475 case SSL3_ST_CW_CERT_VRFY_B
:
476 ret
=ssl3_send_client_verify(s
);
477 if (ret
<= 0) goto end
;
478 s
->state
=SSL3_ST_CW_CHANGE_A
;
480 s
->s3
->change_cipher_spec
=0;
483 case SSL3_ST_CW_CHANGE_A
:
484 case SSL3_ST_CW_CHANGE_B
:
485 ret
=ssl3_send_change_cipher_spec(s
,
486 SSL3_ST_CW_CHANGE_A
,SSL3_ST_CW_CHANGE_B
);
487 if (ret
<= 0) goto end
;
489 #if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
490 s
->state
=SSL3_ST_CW_FINISHED_A
;
492 if (s
->s3
->next_proto_neg_seen
)
493 s
->state
=SSL3_ST_CW_NEXT_PROTO_A
;
495 s
->state
=SSL3_ST_CW_FINISHED_A
;
499 s
->session
->cipher
=s
->s3
->tmp
.new_cipher
;
500 #ifdef OPENSSL_NO_COMP
501 s
->session
->compress_meth
=0;
503 if (s
->s3
->tmp
.new_compression
== NULL
)
504 s
->session
->compress_meth
=0;
506 s
->session
->compress_meth
=
507 s
->s3
->tmp
.new_compression
->id
;
509 if (!s
->method
->ssl3_enc
->setup_key_block(s
))
515 if (!s
->method
->ssl3_enc
->change_cipher_state(s
,
516 SSL3_CHANGE_CIPHER_CLIENT_WRITE
))
524 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
525 case SSL3_ST_CW_NEXT_PROTO_A
:
526 case SSL3_ST_CW_NEXT_PROTO_B
:
527 ret
=ssl3_send_next_proto(s
);
528 if (ret
<= 0) goto end
;
529 s
->state
=SSL3_ST_CW_FINISHED_A
;
533 #ifndef OPENSSL_NO_TLSEXT
534 case SSL3_ST_CW_SUPPLEMENTAL_DATA_A
:
535 case SSL3_ST_CW_SUPPLEMENTAL_DATA_B
:
536 ret
= tls1_send_client_supplemental_data(s
, &skip
);
537 if (ret
<= 0) goto end
;
538 if (s
->s3
->tmp
.cert_req
)
539 s
->state
=SSL3_ST_CW_CERT_A
;
541 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
546 case SSL3_ST_CW_FINISHED_A
:
547 case SSL3_ST_CW_FINISHED_B
:
548 ret
=ssl3_send_finished(s
,
549 SSL3_ST_CW_FINISHED_A
,SSL3_ST_CW_FINISHED_B
,
550 s
->method
->ssl3_enc
->client_finished_label
,
551 s
->method
->ssl3_enc
->client_finished_label_len
);
552 if (ret
<= 0) goto end
;
553 s
->state
=SSL3_ST_CW_FLUSH
;
556 s
->s3
->flags
&= ~SSL3_FLAGS_POP_BUFFER
;
559 s
->s3
->tmp
.next_state
=SSL_ST_OK
;
560 if (s
->s3
->flags
& SSL3_FLAGS_DELAY_CLIENT_FINISHED
)
563 s
->s3
->flags
|=SSL3_FLAGS_POP_BUFFER
;
564 s
->s3
->delay_buf_pop_ret
=0;
569 #ifndef OPENSSL_NO_TLSEXT
570 /* Allow NewSessionTicket if ticket expected */
571 if (s
->tlsext_ticket_expected
)
572 s
->s3
->tmp
.next_state
=SSL3_ST_CR_SESSION_TICKET_A
;
576 s
->s3
->tmp
.next_state
=SSL3_ST_CR_FINISHED_A
;
581 #ifndef OPENSSL_NO_TLSEXT
582 case SSL3_ST_CR_SESSION_TICKET_A
:
583 case SSL3_ST_CR_SESSION_TICKET_B
:
584 ret
=ssl3_get_new_session_ticket(s
);
585 if (ret
<= 0) goto end
;
586 s
->state
=SSL3_ST_CR_FINISHED_A
;
590 case SSL3_ST_CR_CERT_STATUS_A
:
591 case SSL3_ST_CR_CERT_STATUS_B
:
592 ret
=ssl3_get_cert_status(s
);
593 if (ret
<= 0) goto end
;
594 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
599 case SSL3_ST_CR_FINISHED_A
:
600 case SSL3_ST_CR_FINISHED_B
:
602 s
->s3
->flags
|= SSL3_FLAGS_CCS_OK
;
603 ret
=ssl3_get_finished(s
,SSL3_ST_CR_FINISHED_A
,
604 SSL3_ST_CR_FINISHED_B
);
605 if (ret
<= 0) goto end
;
608 s
->state
=SSL3_ST_CW_CHANGE_A
;
614 case SSL3_ST_CW_FLUSH
:
615 s
->rwstate
=SSL_WRITING
;
616 if (BIO_flush(s
->wbio
) <= 0)
621 s
->rwstate
=SSL_NOTHING
;
622 s
->state
=s
->s3
->tmp
.next_state
;
626 /* clean a few things up */
627 ssl3_cleanup_key_block(s
);
629 if (s
->init_buf
!= NULL
)
631 BUF_MEM_free(s
->init_buf
);
635 /* If we are not 'joining' the last two packets,
636 * remove the buffering now */
637 if (!(s
->s3
->flags
& SSL3_FLAGS_POP_BUFFER
))
638 ssl_free_wbio_buffer(s
);
639 /* else do it later in ssl3_write */
645 ssl_update_cache(s
,SSL_SESS_CACHE_CLIENT
);
646 if (s
->hit
) s
->ctx
->stats
.sess_hit
++;
650 s
->handshake_func
=ssl3_connect
;
651 s
->ctx
->stats
.sess_connect_good
++;
653 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_DONE
,1);
659 SSLerr(SSL_F_SSL3_CONNECT
,SSL_R_UNKNOWN_STATE
);
665 /* did we do anything */
666 if (!s
->s3
->tmp
.reuse_message
&& !skip
)
670 if ((ret
=BIO_flush(s
->wbio
)) <= 0)
674 if ((cb
!= NULL
) && (s
->state
!= state
))
678 cb(s
,SSL_CB_CONNECT_LOOP
,1);
689 cb(s
,SSL_CB_CONNECT_EXIT
,ret
);
694 int ssl3_client_hello(SSL
*s
)
701 #ifndef OPENSSL_NO_COMP
706 buf
=(unsigned char *)s
->init_buf
->data
;
707 if (s
->state
== SSL3_ST_CW_CLNT_HELLO_A
)
709 SSL_SESSION
*sess
= s
->session
;
710 if ((sess
== NULL
) ||
711 (sess
->ssl_version
!= s
->version
) ||
712 #ifdef OPENSSL_NO_TLSEXT
713 !sess
->session_id_length
||
715 (!sess
->session_id_length
&& !sess
->tlsext_tick
) ||
717 (sess
->not_resumable
))
719 if (!ssl_get_new_session(s
,0))
722 if (s
->method
->version
== DTLS_ANY_VERSION
)
724 /* Determine which DTLS version to use */
725 int options
= s
->options
;
726 /* If DTLS 1.2 disabled correct the version number */
727 if (options
& SSL_OP_NO_DTLSv1_2
)
731 SSLerr(SSL_F_SSL3_CLIENT_HELLO
, SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE
);
734 /* Disabling all versions is silly: return an
737 if (options
& SSL_OP_NO_DTLSv1
)
739 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,SSL_R_WRONG_SSL_VERSION
);
742 /* Update method so we don't use any DTLS 1.2
745 s
->method
= DTLSv1_client_method();
746 s
->version
= DTLS1_VERSION
;
750 /* We only support one version: update method */
751 if (options
& SSL_OP_NO_DTLSv1
)
752 s
->method
= DTLSv1_2_client_method();
753 s
->version
= DTLS1_2_VERSION
;
755 s
->client_version
= s
->version
;
757 /* else use the pre-loaded session */
759 p
=s
->s3
->client_random
;
761 /* for DTLS if client_random is initialized, reuse it, we are
762 * required to use same upon reply to HelloVerify */
767 for (idx
=0; idx
< sizeof(s
->s3
->client_random
); idx
++)
780 ssl_fill_hello_random(s
, 0, p
,
781 sizeof(s
->s3
->client_random
));
783 /* Do the message type and length last */
784 d
=p
= ssl_handshake_start(s
);
786 /* version indicates the negotiated version: for example from
787 * an SSLv2/v3 compatible client hello). The client_version
788 * field is the maximum version we permit and it is also
789 * used in RSA encrypted premaster secrets. Some servers can
790 * choke if we initially report a higher version then
791 * renegotiate to a lower one in the premaster secret. This
792 * didn't happen with TLS 1.0 as most servers supported it
793 * but it can with TLS 1.1 or later if the server only supports
796 * Possible scenario with previous logic:
797 * 1. Client hello indicates TLS 1.2
798 * 2. Server hello says TLS 1.0
799 * 3. RSA encrypted premaster secret uses 1.2.
800 * 4. Handhaked proceeds using TLS 1.0.
801 * 5. Server sends hello request to renegotiate.
802 * 6. Client hello indicates TLS v1.0 as we now
803 * know that is maximum server supports.
804 * 7. Server chokes on RSA encrypted premaster secret
805 * containing version 1.0.
807 * For interoperability it should be OK to always use the
808 * maximum version we support in client hello and then rely
809 * on the checking of version to ensure the servers isn't
810 * being inconsistent: for example initially negotiating with
811 * TLS 1.0 and renegotiating with TLS 1.2. We do this by using
812 * client_version in client hello and not resetting it to
813 * the negotiated version.
816 *(p
++)=s
->version
>>8;
817 *(p
++)=s
->version
&0xff;
818 s
->client_version
=s
->version
;
820 *(p
++)=s
->client_version
>>8;
821 *(p
++)=s
->client_version
&0xff;
825 memcpy(p
,s
->s3
->client_random
,SSL3_RANDOM_SIZE
);
832 i
=s
->session
->session_id_length
;
836 if (i
> (int)sizeof(s
->session
->session_id
))
838 SSLerr(SSL_F_SSL3_CLIENT_HELLO
, ERR_R_INTERNAL_ERROR
);
841 memcpy(p
,s
->session
->session_id
,i
);
845 /* cookie stuff for DTLS */
848 if ( s
->d1
->cookie_len
> sizeof(s
->d1
->cookie
))
850 SSLerr(SSL_F_SSL3_CLIENT_HELLO
, ERR_R_INTERNAL_ERROR
);
853 *(p
++) = s
->d1
->cookie_len
;
854 memcpy(p
, s
->d1
->cookie
, s
->d1
->cookie_len
);
855 p
+= s
->d1
->cookie_len
;
858 /* Ciphers supported */
859 i
=ssl_cipher_list_to_bytes(s
,SSL_get_ciphers(s
),&(p
[2]),0);
862 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,SSL_R_NO_CIPHERS_AVAILABLE
);
865 #ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
866 /* Some servers hang if client hello > 256 bytes
867 * as hack workaround chop number of supported ciphers
868 * to keep it well below this if we use TLS v1.2
870 if (TLS1_get_version(s
) >= TLS1_2_VERSION
871 && i
> OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
)
872 i
= OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
& ~1;
878 #ifdef OPENSSL_NO_COMP
882 if (!ssl_allow_compression(s
) || !s
->ctx
->comp_methods
)
885 j
=sk_SSL_COMP_num(s
->ctx
->comp_methods
);
889 comp
=sk_SSL_COMP_value(s
->ctx
->comp_methods
,i
);
893 *(p
++)=0; /* Add the NULL method */
895 #ifndef OPENSSL_NO_TLSEXT
897 if (ssl_prepare_clienthello_tlsext(s
) <= 0)
899 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,SSL_R_CLIENTHELLO_TLSEXT
);
902 if ((p
= ssl_add_clienthello_tlsext(s
, p
, buf
+SSL3_RT_MAX_PLAIN_LENGTH
, &al
)) == NULL
)
904 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
905 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,ERR_R_INTERNAL_ERROR
);
911 ssl_set_handshake_header(s
, SSL3_MT_CLIENT_HELLO
, l
);
912 s
->state
=SSL3_ST_CW_CLNT_HELLO_B
;
915 /* SSL3_ST_CW_CLNT_HELLO_B */
916 return ssl_do_write(s
);
921 int ssl3_get_server_hello(SSL
*s
)
923 STACK_OF(SSL_CIPHER
) *sk
;
927 int i
,al
=SSL_AD_INTERNAL_ERROR
,ok
;
930 #ifndef OPENSSL_NO_COMP
933 /* Hello verify request and/or server hello version may not
934 * match so set first packet if we're negotiating version.
939 n
=s
->method
->ssl_get_message(s
,
940 SSL3_ST_CR_SRVR_HELLO_A
,
941 SSL3_ST_CR_SRVR_HELLO_B
,
946 if (!ok
) return((int)n
);
951 if ( s
->s3
->tmp
.message_type
== DTLS1_MT_HELLO_VERIFY_REQUEST
)
953 if ( s
->d1
->send_cookie
== 0)
955 s
->s3
->tmp
.reuse_message
= 1;
958 else /* already sent a cookie */
960 al
=SSL_AD_UNEXPECTED_MESSAGE
;
961 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_MESSAGE_TYPE
);
967 if ( s
->s3
->tmp
.message_type
!= SSL3_MT_SERVER_HELLO
)
969 al
=SSL_AD_UNEXPECTED_MESSAGE
;
970 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_MESSAGE_TYPE
);
974 d
=p
=(unsigned char *)s
->init_msg
;
975 if (s
->method
->version
== DTLS_ANY_VERSION
)
977 /* Work out correct protocol version to use */
978 int hversion
= (p
[0] << 8)|p
[1];
979 int options
= s
->options
;
980 if (hversion
== DTLS1_2_VERSION
981 && !(options
& SSL_OP_NO_DTLSv1_2
))
982 s
->method
= DTLSv1_2_client_method();
983 else if (tls1_suiteb(s
))
985 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
, SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE
);
986 s
->version
= hversion
;
987 al
= SSL_AD_PROTOCOL_VERSION
;
990 else if (hversion
== DTLS1_VERSION
991 && !(options
& SSL_OP_NO_DTLSv1
))
992 s
->method
= DTLSv1_client_method();
995 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_SSL_VERSION
);
996 s
->version
= hversion
;
997 al
= SSL_AD_PROTOCOL_VERSION
;
1000 s
->version
= s
->client_version
= s
->method
->version
;
1003 if ((p
[0] != (s
->version
>>8)) || (p
[1] != (s
->version
&0xff)))
1005 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_SSL_VERSION
);
1006 s
->version
=(s
->version
&0xff00)|p
[1];
1007 al
=SSL_AD_PROTOCOL_VERSION
;
1012 /* load the server hello data */
1013 /* load the server random */
1014 memcpy(s
->s3
->server_random
,p
,SSL3_RANDOM_SIZE
);
1015 p
+=SSL3_RANDOM_SIZE
;
1017 /* get the session-id */
1020 if ((j
> sizeof s
->session
->session_id
) || (j
> SSL3_SESSION_ID_SIZE
))
1022 al
=SSL_AD_ILLEGAL_PARAMETER
;
1023 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_SSL3_SESSION_ID_TOO_LONG
);
1027 #ifndef OPENSSL_NO_TLSEXT
1028 /* check if we want to resume the session based on external pre-shared secret */
1029 if (s
->version
>= TLS1_VERSION
&& s
->tls_session_secret_cb
)
1031 SSL_CIPHER
*pref_cipher
=NULL
;
1032 s
->session
->master_key_length
=sizeof(s
->session
->master_key
);
1033 if (s
->tls_session_secret_cb(s
, s
->session
->master_key
,
1034 &s
->session
->master_key_length
,
1036 s
->tls_session_secret_cb_arg
))
1038 s
->session
->cipher
= pref_cipher
?
1039 pref_cipher
: ssl_get_cipher_by_char(s
, p
+j
);
1042 #endif /* OPENSSL_NO_TLSEXT */
1044 if (j
!= 0 && j
== s
->session
->session_id_length
1045 && memcmp(p
,s
->session
->session_id
,j
) == 0)
1047 if(s
->sid_ctx_length
!= s
->session
->sid_ctx_length
1048 || memcmp(s
->session
->sid_ctx
,s
->sid_ctx
,s
->sid_ctx_length
))
1050 /* actually a client application bug */
1051 al
=SSL_AD_ILLEGAL_PARAMETER
;
1052 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT
);
1055 s
->s3
->flags
|= SSL3_FLAGS_CCS_OK
;
1058 else /* a miss or crap from the other end */
1060 /* If we were trying for session-id reuse, make a new
1061 * SSL_SESSION so we don't stuff up other people */
1063 if (s
->session
->session_id_length
> 0)
1065 if (!ssl_get_new_session(s
,0))
1070 s
->session
->session_id_length
=j
;
1071 memcpy(s
->session
->session_id
,p
,j
); /* j could be 0 */
1074 c
=ssl_get_cipher_by_char(s
,p
);
1077 /* unknown cipher */
1078 al
=SSL_AD_ILLEGAL_PARAMETER
;
1079 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNKNOWN_CIPHER_RETURNED
);
1082 /* Set version disabled mask now we know version */
1083 if (!SSL_USE_TLS1_2_CIPHERS(s
))
1084 ct
->mask_ssl
= SSL_TLSV1_2
;
1087 /* If it is a disabled cipher we didn't send it in client hello,
1088 * so return an error.
1090 if (ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_CHECK
))
1092 al
=SSL_AD_ILLEGAL_PARAMETER
;
1093 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_CIPHER_RETURNED
);
1096 p
+=ssl_put_cipher_by_char(s
,NULL
,NULL
);
1098 sk
=ssl_get_ciphers_by_id(s
);
1099 i
=sk_SSL_CIPHER_find(sk
,c
);
1102 /* we did not say we would use this cipher */
1103 al
=SSL_AD_ILLEGAL_PARAMETER
;
1104 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_CIPHER_RETURNED
);
1108 /* Depending on the session caching (internal/external), the cipher
1109 and/or cipher_id values may not be set. Make sure that
1110 cipher_id is set and use it for comparison. */
1111 if (s
->session
->cipher
)
1112 s
->session
->cipher_id
= s
->session
->cipher
->id
;
1113 if (s
->hit
&& (s
->session
->cipher_id
!= c
->id
))
1115 /* Workaround is now obsolete */
1118 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
))
1121 al
=SSL_AD_ILLEGAL_PARAMETER
;
1122 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED
);
1126 s
->s3
->tmp
.new_cipher
=c
;
1127 /* Don't digest cached records if no sigalgs: we may need them for
1128 * client authentication.
1130 if (!SSL_USE_SIGALGS(s
) && !ssl3_digest_cached_records(s
))
1132 /* lets get the compression algorithm */
1134 #ifdef OPENSSL_NO_COMP
1137 al
=SSL_AD_ILLEGAL_PARAMETER
;
1138 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
1141 /* If compression is disabled we'd better not try to resume a session
1142 * using compression.
1144 if (s
->session
->compress_meth
!= 0)
1146 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_INCONSISTENT_COMPRESSION
);
1151 if (s
->hit
&& j
!= s
->session
->compress_meth
)
1153 al
=SSL_AD_ILLEGAL_PARAMETER
;
1154 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED
);
1159 else if (!ssl_allow_compression(s
))
1161 al
=SSL_AD_ILLEGAL_PARAMETER
;
1162 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_COMPRESSION_DISABLED
);
1166 comp
=ssl3_comp_find(s
->ctx
->comp_methods
,j
);
1168 if ((j
!= 0) && (comp
== NULL
))
1170 al
=SSL_AD_ILLEGAL_PARAMETER
;
1171 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
1176 s
->s3
->tmp
.new_compression
=comp
;
1180 #ifndef OPENSSL_NO_TLSEXT
1182 if (!ssl_parse_serverhello_tlsext(s
,&p
,d
,n
))
1184 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_PARSE_TLSEXT
);
1191 /* wrong packet length */
1192 al
=SSL_AD_DECODE_ERROR
;
1193 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_PACKET_LENGTH
);
1199 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1204 int ssl3_get_server_certificate(SSL
*s
)
1206 int al
,i
,ok
,ret
= -1;
1207 unsigned long n
,nc
,llen
,l
;
1209 const unsigned char *q
,*p
;
1211 STACK_OF(X509
) *sk
=NULL
;
1213 EVP_PKEY
*pkey
=NULL
;
1214 int need_cert
= 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1216 n
=s
->method
->ssl_get_message(s
,
1223 if (!ok
) return((int)n
);
1225 if ((s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_KEY_EXCHANGE
) ||
1226 ((s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aKRB5
) &&
1227 (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_DONE
)))
1229 s
->s3
->tmp
.reuse_message
=1;
1233 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE
)
1235 al
=SSL_AD_UNEXPECTED_MESSAGE
;
1236 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_BAD_MESSAGE_TYPE
);
1239 p
=d
=(unsigned char *)s
->init_msg
;
1241 if ((sk
=sk_X509_new_null()) == NULL
)
1243 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
1250 al
=SSL_AD_DECODE_ERROR
;
1251 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_LENGTH_MISMATCH
);
1254 for (nc
=0; nc
<llen
; )
1257 if ((l
+nc
+3) > llen
)
1259 al
=SSL_AD_DECODE_ERROR
;
1260 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
1265 x
=d2i_X509(NULL
,&q
,l
);
1268 al
=SSL_AD_BAD_CERTIFICATE
;
1269 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_ASN1_LIB
);
1274 al
=SSL_AD_DECODE_ERROR
;
1275 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
1278 if (!sk_X509_push(sk
,x
))
1280 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
1288 i
=ssl_verify_cert_chain(s
,sk
);
1289 if ((s
->verify_mode
!= SSL_VERIFY_NONE
) && (i
<= 0)
1290 #ifndef OPENSSL_NO_KRB5
1291 && !((s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kKRB5
) &&
1292 (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aKRB5
))
1293 #endif /* OPENSSL_NO_KRB5 */
1296 al
=ssl_verify_alarm_type(s
->verify_result
);
1297 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERTIFICATE_VERIFY_FAILED
);
1300 ERR_clear_error(); /* but we keep s->verify_result */
1303 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
, i
);
1304 al
= SSL_AD_HANDSHAKE_FAILURE
;
1308 sc
=ssl_sess_cert_new();
1309 if (sc
== NULL
) goto err
;
1311 if (s
->session
->sess_cert
) ssl_sess_cert_free(s
->session
->sess_cert
);
1312 s
->session
->sess_cert
=sc
;
1315 /* Inconsistency alert: cert_chain does include the peer's
1316 * certificate, which we don't include in s3_srvr.c */
1317 x
=sk_X509_value(sk
,0);
1319 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1321 pkey
=X509_get_pubkey(x
);
1323 /* VRS: allow null cert if auth == KRB5 */
1324 need_cert
= ((s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kKRB5
) &&
1325 (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aKRB5
))
1329 printf("pkey,x = %p, %p\n", pkey
,x
);
1330 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x
,pkey
));
1331 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s
->s3
->tmp
.new_cipher
->name
,
1332 s
->s3
->tmp
.new_cipher
->algorithm_mkey
, s
->s3
->tmp
.new_cipher
->algorithm_auth
, need_cert
);
1333 #endif /* KSSL_DEBUG */
1335 if (need_cert
&& ((pkey
== NULL
) || EVP_PKEY_missing_parameters(pkey
)))
1339 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
1340 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS
);
1344 i
=ssl_cert_type(x
,pkey
);
1345 if (need_cert
&& i
< 0)
1349 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
1350 SSL_R_UNKNOWN_CERTIFICATE_TYPE
);
1356 int exp_idx
= ssl_cipher_get_cert_index(s
->s3
->tmp
.new_cipher
);
1357 if (exp_idx
>= 0 && i
!= exp_idx
)
1360 al
=SSL_AD_ILLEGAL_PARAMETER
;
1361 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
1362 SSL_R_WRONG_CERTIFICATE_TYPE
);
1365 sc
->peer_cert_type
=i
;
1366 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
1367 /* Why would the following ever happen?
1368 * We just created sc a couple of lines ago. */
1369 if (sc
->peer_pkeys
[i
].x509
!= NULL
)
1370 X509_free(sc
->peer_pkeys
[i
].x509
);
1371 sc
->peer_pkeys
[i
].x509
=x
;
1372 sc
->peer_key
= &(sc
->peer_pkeys
[i
]);
1374 if (s
->session
->peer
!= NULL
)
1375 X509_free(s
->session
->peer
);
1376 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
1381 sc
->peer_cert_type
=i
;
1384 if (s
->session
->peer
!= NULL
)
1385 X509_free(s
->session
->peer
);
1386 s
->session
->peer
=NULL
;
1388 s
->session
->verify_result
= s
->verify_result
;
1395 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1398 EVP_PKEY_free(pkey
);
1400 sk_X509_pop_free(sk
,X509_free
);
1404 int ssl3_get_key_exchange(SSL
*s
)
1406 #ifndef OPENSSL_NO_RSA
1407 unsigned char *q
,md_buf
[EVP_MAX_MD_SIZE
*2];
1410 unsigned char *param
,*p
;
1411 int al
,i
,j
,param_len
,ok
;
1413 EVP_PKEY
*pkey
=NULL
;
1414 const EVP_MD
*md
= NULL
;
1415 #ifndef OPENSSL_NO_RSA
1418 #ifndef OPENSSL_NO_DH
1421 #ifndef OPENSSL_NO_ECDH
1422 EC_KEY
*ecdh
= NULL
;
1423 BN_CTX
*bn_ctx
= NULL
;
1424 EC_POINT
*srvr_ecpoint
= NULL
;
1426 int encoded_pt_len
= 0;
1429 /* use same message size as in ssl3_get_certificate_request()
1430 * as ServerKeyExchange message may be skipped */
1431 n
=s
->method
->ssl_get_message(s
,
1432 SSL3_ST_CR_KEY_EXCH_A
,
1433 SSL3_ST_CR_KEY_EXCH_B
,
1437 if (!ok
) return((int)n
);
1439 if (s
->s3
->tmp
.message_type
!= SSL3_MT_SERVER_KEY_EXCHANGE
)
1441 #ifndef OPENSSL_NO_PSK
1442 /* In plain PSK ciphersuite, ServerKeyExchange can be
1443 omitted if no identity hint is sent. Set
1444 session->sess_cert anyway to avoid problems
1446 if (s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kPSK
)
1448 s
->session
->sess_cert
=ssl_sess_cert_new();
1449 if (s
->ctx
->psk_identity_hint
)
1450 OPENSSL_free(s
->ctx
->psk_identity_hint
);
1451 s
->ctx
->psk_identity_hint
= NULL
;
1454 s
->s3
->tmp
.reuse_message
=1;
1458 param
=p
=(unsigned char *)s
->init_msg
;
1459 if (s
->session
->sess_cert
!= NULL
)
1461 #ifndef OPENSSL_NO_RSA
1462 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
1464 RSA_free(s
->session
->sess_cert
->peer_rsa_tmp
);
1465 s
->session
->sess_cert
->peer_rsa_tmp
=NULL
;
1468 #ifndef OPENSSL_NO_DH
1469 if (s
->session
->sess_cert
->peer_dh_tmp
)
1471 DH_free(s
->session
->sess_cert
->peer_dh_tmp
);
1472 s
->session
->sess_cert
->peer_dh_tmp
=NULL
;
1475 #ifndef OPENSSL_NO_ECDH
1476 if (s
->session
->sess_cert
->peer_ecdh_tmp
)
1478 EC_KEY_free(s
->session
->sess_cert
->peer_ecdh_tmp
);
1479 s
->session
->sess_cert
->peer_ecdh_tmp
=NULL
;
1485 s
->session
->sess_cert
=ssl_sess_cert_new();
1489 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
1490 alg_a
=s
->s3
->tmp
.new_cipher
->algorithm_auth
;
1491 EVP_MD_CTX_init(&md_ctx
);
1493 #ifndef OPENSSL_NO_PSK
1494 if (alg_k
& SSL_kPSK
)
1496 char tmp_id_hint
[PSK_MAX_IDENTITY_LEN
+1];
1498 al
=SSL_AD_HANDSHAKE_FAILURE
;
1501 /* Store PSK identity hint for later use, hint is used
1502 * in ssl3_send_client_key_exchange. Assume that the
1503 * maximum length of a PSK identity hint can be as
1504 * long as the maximum length of a PSK identity. */
1505 if (i
> PSK_MAX_IDENTITY_LEN
)
1507 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1508 SSL_R_DATA_LENGTH_TOO_LONG
);
1513 al
=SSL_AD_DECODE_ERROR
;
1514 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1515 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH
);
1518 /* If received PSK identity hint contains NULL
1519 * characters, the hint is truncated from the first
1520 * NULL. p may not be ending with NULL, so create a
1521 * NULL-terminated string. */
1522 memcpy(tmp_id_hint
, p
, i
);
1523 memset(tmp_id_hint
+i
, 0, PSK_MAX_IDENTITY_LEN
+1-i
);
1524 if (s
->ctx
->psk_identity_hint
!= NULL
)
1525 OPENSSL_free(s
->ctx
->psk_identity_hint
);
1526 s
->ctx
->psk_identity_hint
= BUF_strdup(tmp_id_hint
);
1527 if (s
->ctx
->psk_identity_hint
== NULL
)
1529 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
, ERR_R_MALLOC_FAILURE
);
1537 #endif /* !OPENSSL_NO_PSK */
1538 #ifndef OPENSSL_NO_SRP
1539 if (alg_k
& SSL_kSRP
)
1545 al
=SSL_AD_DECODE_ERROR
;
1546 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_N_LENGTH
);
1549 if (!(s
->srp_ctx
.N
=BN_bin2bn(p
,i
,NULL
)))
1551 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1560 al
=SSL_AD_DECODE_ERROR
;
1561 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_G_LENGTH
);
1564 if (!(s
->srp_ctx
.g
=BN_bin2bn(p
,i
,NULL
)))
1566 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1571 i
= (unsigned int)(p
[0]);
1576 al
=SSL_AD_DECODE_ERROR
;
1577 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_S_LENGTH
);
1580 if (!(s
->srp_ctx
.s
=BN_bin2bn(p
,i
,NULL
)))
1582 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1591 al
=SSL_AD_DECODE_ERROR
;
1592 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_B_LENGTH
);
1595 if (!(s
->srp_ctx
.B
=BN_bin2bn(p
,i
,NULL
)))
1597 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1603 /* We must check if there is a certificate */
1604 #ifndef OPENSSL_NO_RSA
1605 if (alg_a
& SSL_aRSA
)
1606 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1611 #ifndef OPENSSL_NO_DSA
1612 else if (alg_a
& SSL_aDSS
)
1613 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_DSA_SIGN
].x509
);
1617 #endif /* !OPENSSL_NO_SRP */
1618 #ifndef OPENSSL_NO_RSA
1619 if (alg_k
& SSL_kRSA
)
1621 if ((rsa
=RSA_new()) == NULL
)
1623 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1630 al
=SSL_AD_DECODE_ERROR
;
1631 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_MODULUS_LENGTH
);
1634 if (!(rsa
->n
=BN_bin2bn(p
,i
,rsa
->n
)))
1636 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1645 al
=SSL_AD_DECODE_ERROR
;
1646 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_E_LENGTH
);
1649 if (!(rsa
->e
=BN_bin2bn(p
,i
,rsa
->e
)))
1651 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1657 /* this should be because we are using an export cipher */
1658 if (alg_a
& SSL_aRSA
)
1659 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1662 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1665 s
->session
->sess_cert
->peer_rsa_tmp
=rsa
;
1668 #else /* OPENSSL_NO_RSA */
1672 #ifndef OPENSSL_NO_DH
1673 else if (alg_k
& SSL_kDHE
)
1675 if ((dh
=DH_new()) == NULL
)
1677 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1684 al
=SSL_AD_DECODE_ERROR
;
1685 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_P_LENGTH
);
1688 if (!(dh
->p
=BN_bin2bn(p
,i
,NULL
)))
1690 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1699 al
=SSL_AD_DECODE_ERROR
;
1700 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_G_LENGTH
);
1703 if (!(dh
->g
=BN_bin2bn(p
,i
,NULL
)))
1705 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1714 al
=SSL_AD_DECODE_ERROR
;
1715 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_PUB_KEY_LENGTH
);
1718 if (!(dh
->pub_key
=BN_bin2bn(p
,i
,NULL
)))
1720 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1726 if (!ssl_security(s
, SSL_SECOP_TMP_DH
,
1727 DH_security_bits(dh
), 0, dh
))
1729 al
=SSL_AD_HANDSHAKE_FAILURE
;
1730 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_DH_KEY_TOO_SMALL
);
1734 #ifndef OPENSSL_NO_RSA
1735 if (alg_a
& SSL_aRSA
)
1736 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1741 #ifndef OPENSSL_NO_DSA
1742 else if (alg_a
& SSL_aDSS
)
1743 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_DSA_SIGN
].x509
);
1745 /* else anonymous DH, so no certificate or pkey. */
1747 s
->session
->sess_cert
->peer_dh_tmp
=dh
;
1750 else if ((alg_k
& SSL_kDHr
) || (alg_k
& SSL_kDHd
))
1752 al
=SSL_AD_ILLEGAL_PARAMETER
;
1753 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER
);
1756 #endif /* !OPENSSL_NO_DH */
1758 #ifndef OPENSSL_NO_ECDH
1759 else if (alg_k
& SSL_kECDHE
)
1762 const EC_GROUP
*group
;
1764 if ((ecdh
=EC_KEY_new()) == NULL
)
1766 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1770 /* Extract elliptic curve parameters and the
1771 * server's ephemeral ECDH public key.
1772 * Keep accumulating lengths of various components in
1773 * param_len and make sure it never exceeds n.
1776 /* XXX: For now we only support named (not generic) curves
1777 * and the ECParameters in this case is just three bytes.
1780 /* Check curve is one of our preferences, if not server has
1781 * sent an invalid curve.
1783 if (!tls1_check_curve(s
, p
, param_len
))
1785 al
=SSL_AD_DECODE_ERROR
;
1786 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_WRONG_CURVE
);
1790 if ((curve_nid
= tls1_ec_curve_id2nid(*(p
+ 2))) == 0)
1792 al
=SSL_AD_INTERNAL_ERROR
;
1793 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS
);
1797 ngroup
= EC_GROUP_new_by_curve_name(curve_nid
);
1800 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_EC_LIB
);
1803 if (EC_KEY_set_group(ecdh
, ngroup
) == 0)
1805 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_EC_LIB
);
1808 EC_GROUP_free(ngroup
);
1810 group
= EC_KEY_get0_group(ecdh
);
1812 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) &&
1813 (EC_GROUP_get_degree(group
) > 163))
1815 al
=SSL_AD_EXPORT_RESTRICTION
;
1816 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER
);
1822 /* Next, get the encoded ECPoint */
1823 if (((srvr_ecpoint
= EC_POINT_new(group
)) == NULL
) ||
1824 ((bn_ctx
= BN_CTX_new()) == NULL
))
1826 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1830 encoded_pt_len
= *p
; /* length of encoded point */
1832 param_len
+= (1 + encoded_pt_len
);
1833 if ((param_len
> n
) ||
1834 (EC_POINT_oct2point(group
, srvr_ecpoint
,
1835 p
, encoded_pt_len
, bn_ctx
) == 0))
1837 al
=SSL_AD_DECODE_ERROR
;
1838 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_ECPOINT
);
1845 /* The ECC/TLS specification does not mention
1846 * the use of DSA to sign ECParameters in the server
1847 * key exchange message. We do support RSA and ECDSA.
1850 #ifndef OPENSSL_NO_RSA
1851 else if (alg_a
& SSL_aRSA
)
1852 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1854 #ifndef OPENSSL_NO_ECDSA
1855 else if (alg_a
& SSL_aECDSA
)
1856 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_ECC
].x509
);
1858 /* else anonymous ECDH, so no certificate or pkey. */
1859 EC_KEY_set_public_key(ecdh
, srvr_ecpoint
);
1860 s
->session
->sess_cert
->peer_ecdh_tmp
=ecdh
;
1862 BN_CTX_free(bn_ctx
);
1864 EC_POINT_free(srvr_ecpoint
);
1865 srvr_ecpoint
= NULL
;
1869 al
=SSL_AD_UNEXPECTED_MESSAGE
;
1870 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNEXPECTED_MESSAGE
);
1873 #endif /* !OPENSSL_NO_ECDH */
1876 /* p points to the next byte, there are 'n' bytes left */
1878 /* if it was signed, check the signature */
1881 if (SSL_USE_SIGALGS(s
))
1883 int rv
= tls12_check_peer_sigalg(&md
, s
, p
, pkey
);
1888 al
= SSL_AD_DECODE_ERROR
;
1892 fprintf(stderr
, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md
));
1902 j
=EVP_PKEY_size(pkey
);
1904 if ((i
!= n
) || (n
> j
) || (n
<= 0))
1906 /* wrong packet length */
1907 al
=SSL_AD_DECODE_ERROR
;
1908 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_WRONG_SIGNATURE_LENGTH
);
1912 #ifndef OPENSSL_NO_RSA
1913 if (pkey
->type
== EVP_PKEY_RSA
&& !SSL_USE_SIGALGS(s
))
1919 for (num
=2; num
> 0; num
--)
1921 EVP_MD_CTX_set_flags(&md_ctx
,
1922 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW
);
1923 EVP_DigestInit_ex(&md_ctx
,(num
== 2)
1924 ?s
->ctx
->md5
:s
->ctx
->sha1
, NULL
);
1925 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1926 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1927 EVP_DigestUpdate(&md_ctx
,param
,param_len
);
1928 EVP_DigestFinal_ex(&md_ctx
,q
,(unsigned int *)&i
);
1932 i
=RSA_verify(NID_md5_sha1
, md_buf
, j
, p
, n
,
1936 al
=SSL_AD_DECRYPT_ERROR
;
1937 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_DECRYPT
);
1943 al
=SSL_AD_DECRYPT_ERROR
;
1944 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1951 EVP_VerifyInit_ex(&md_ctx
, md
, NULL
);
1952 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1953 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1954 EVP_VerifyUpdate(&md_ctx
,param
,param_len
);
1955 if (EVP_VerifyFinal(&md_ctx
,p
,(int)n
,pkey
) <= 0)
1958 al
=SSL_AD_DECRYPT_ERROR
;
1959 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1966 /* aNULL or kPSK do not need public keys */
1967 if (!(alg_a
& SSL_aNULL
) && !(alg_k
& SSL_kPSK
))
1969 /* Might be wrong key type, check it */
1970 if (ssl3_check_cert_and_algorithm(s
))
1971 /* Otherwise this shouldn't happen */
1972 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1975 /* still data left over */
1978 al
=SSL_AD_DECODE_ERROR
;
1979 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_EXTRA_DATA_IN_MESSAGE
);
1983 EVP_PKEY_free(pkey
);
1984 EVP_MD_CTX_cleanup(&md_ctx
);
1987 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1989 EVP_PKEY_free(pkey
);
1990 #ifndef OPENSSL_NO_RSA
1994 #ifndef OPENSSL_NO_DH
1998 #ifndef OPENSSL_NO_ECDH
1999 BN_CTX_free(bn_ctx
);
2000 EC_POINT_free(srvr_ecpoint
);
2004 EVP_MD_CTX_cleanup(&md_ctx
);
2008 int ssl3_get_certificate_request(SSL
*s
)
2011 unsigned long n
,nc
,l
;
2012 unsigned int llen
, ctype_num
,i
;
2014 const unsigned char *p
,*q
;
2016 STACK_OF(X509_NAME
) *ca_sk
=NULL
;
2018 n
=s
->method
->ssl_get_message(s
,
2019 SSL3_ST_CR_CERT_REQ_A
,
2020 SSL3_ST_CR_CERT_REQ_B
,
2025 if (!ok
) return((int)n
);
2027 s
->s3
->tmp
.cert_req
=0;
2029 if (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_DONE
)
2031 s
->s3
->tmp
.reuse_message
=1;
2032 /* If we get here we don't need any cached handshake records
2033 * as we wont be doing client auth.
2035 if (s
->s3
->handshake_buffer
)
2037 if (!ssl3_digest_cached_records(s
))
2043 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE_REQUEST
)
2045 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
2046 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_WRONG_MESSAGE_TYPE
);
2050 /* TLS does not like anon-DH with client cert */
2051 if (s
->version
> SSL3_VERSION
)
2053 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aNULL
)
2055 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
2056 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER
);
2061 p
=d
=(unsigned char *)s
->init_msg
;
2063 if ((ca_sk
=sk_X509_NAME_new(ca_dn_cmp
)) == NULL
)
2065 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
2069 /* get the certificate types */
2071 if (s
->cert
->ctypes
)
2073 OPENSSL_free(s
->cert
->ctypes
);
2074 s
->cert
->ctypes
= NULL
;
2076 if (ctype_num
> SSL3_CT_NUMBER
)
2078 /* If we exceed static buffer copy all to cert structure */
2079 s
->cert
->ctypes
= OPENSSL_malloc(ctype_num
);
2080 memcpy(s
->cert
->ctypes
, p
, ctype_num
);
2081 s
->cert
->ctype_num
= (size_t)ctype_num
;
2082 ctype_num
=SSL3_CT_NUMBER
;
2084 for (i
=0; i
<ctype_num
; i
++)
2085 s
->s3
->tmp
.ctype
[i
]= p
[i
];
2087 if (SSL_USE_SIGALGS(s
))
2090 /* Check we have enough room for signature algorithms and
2091 * following length value.
2093 if ((unsigned long)(p
- d
+ llen
+ 2) > n
)
2095 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2096 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_DATA_LENGTH_TOO_LONG
);
2099 /* Clear certificate digests and validity flags */
2100 for (i
= 0; i
< SSL_PKEY_NUM
; i
++)
2102 s
->cert
->pkeys
[i
].digest
= NULL
;
2103 s
->cert
->pkeys
[i
].valid_flags
= 0;
2105 if ((llen
& 1) || !tls1_process_sigalgs(s
, p
, llen
))
2107 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2108 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_SIGNATURE_ALGORITHMS_ERROR
);
2114 /* get the CA RDNs */
2119 out
=fopen("/tmp/vsign.der","w");
2120 fwrite(p
,1,llen
,out
);
2125 if ((unsigned long)(p
- d
+ llen
) != n
)
2127 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2128 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_LENGTH_MISMATCH
);
2132 for (nc
=0; nc
<llen
; )
2135 if ((l
+nc
+2) > llen
)
2137 if ((s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
))
2138 goto cont
; /* netscape bugs */
2139 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2140 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_TOO_LONG
);
2146 if ((xn
=d2i_X509_NAME(NULL
,&q
,l
)) == NULL
)
2148 /* If netscape tolerance is on, ignore errors */
2149 if (s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
)
2153 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2154 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_ASN1_LIB
);
2161 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2162 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_LENGTH_MISMATCH
);
2165 if (!sk_X509_NAME_push(ca_sk
,xn
))
2167 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
2181 /* we should setup a certificate to return.... */
2182 s
->s3
->tmp
.cert_req
=1;
2183 s
->s3
->tmp
.ctype_num
=ctype_num
;
2184 if (s
->s3
->tmp
.ca_names
!= NULL
)
2185 sk_X509_NAME_pop_free(s
->s3
->tmp
.ca_names
,X509_NAME_free
);
2186 s
->s3
->tmp
.ca_names
=ca_sk
;
2191 if (ca_sk
!= NULL
) sk_X509_NAME_pop_free(ca_sk
,X509_NAME_free
);
2195 static int ca_dn_cmp(const X509_NAME
* const *a
, const X509_NAME
* const *b
)
2197 return(X509_NAME_cmp(*a
,*b
));
2199 #ifndef OPENSSL_NO_TLSEXT
2200 int ssl3_get_new_session_ticket(SSL
*s
)
2202 int ok
,al
,ret
=0, ticklen
;
2204 const unsigned char *p
;
2207 n
=s
->method
->ssl_get_message(s
,
2208 SSL3_ST_CR_SESSION_TICKET_A
,
2209 SSL3_ST_CR_SESSION_TICKET_B
,
2217 if (s
->s3
->tmp
.message_type
== SSL3_MT_FINISHED
)
2219 s
->s3
->tmp
.reuse_message
=1;
2222 if (s
->s3
->tmp
.message_type
!= SSL3_MT_NEWSESSION_TICKET
)
2224 al
=SSL_AD_UNEXPECTED_MESSAGE
;
2225 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_BAD_MESSAGE_TYPE
);
2230 /* need at least ticket_lifetime_hint + ticket length */
2231 al
= SSL_AD_DECODE_ERROR
;
2232 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_LENGTH_MISMATCH
);
2236 p
=d
=(unsigned char *)s
->init_msg
;
2237 n2l(p
, s
->session
->tlsext_tick_lifetime_hint
);
2239 /* ticket_lifetime_hint + ticket_length + ticket */
2240 if (ticklen
+ 6 != n
)
2242 al
= SSL_AD_DECODE_ERROR
;
2243 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_LENGTH_MISMATCH
);
2246 if (s
->session
->tlsext_tick
)
2248 OPENSSL_free(s
->session
->tlsext_tick
);
2249 s
->session
->tlsext_ticklen
= 0;
2251 s
->session
->tlsext_tick
= OPENSSL_malloc(ticklen
);
2252 if (!s
->session
->tlsext_tick
)
2254 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,ERR_R_MALLOC_FAILURE
);
2257 memcpy(s
->session
->tlsext_tick
, p
, ticklen
);
2258 s
->session
->tlsext_ticklen
= ticklen
;
2259 /* There are two ways to detect a resumed ticket sesion.
2260 * One is to set an appropriate session ID and then the server
2261 * must return a match in ServerHello. This allows the normal
2262 * client session ID matching to work and we know much
2263 * earlier that the ticket has been accepted.
2265 * The other way is to set zero length session ID when the
2266 * ticket is presented and rely on the handshake to determine
2267 * session resumption.
2269 * We choose the former approach because this fits in with
2270 * assumptions elsewhere in OpenSSL. The session ID is set
2271 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2274 EVP_Digest(p
, ticklen
,
2275 s
->session
->session_id
, &s
->session
->session_id_length
,
2276 #ifndef OPENSSL_NO_SHA256
2277 EVP_sha256(), NULL
);
2284 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
2289 int ssl3_get_cert_status(SSL
*s
)
2292 unsigned long resplen
,n
;
2293 const unsigned char *p
;
2295 n
=s
->method
->ssl_get_message(s
,
2296 SSL3_ST_CR_CERT_STATUS_A
,
2297 SSL3_ST_CR_CERT_STATUS_B
,
2298 SSL3_MT_CERTIFICATE_STATUS
,
2302 if (!ok
) return((int)n
);
2305 /* need at least status type + length */
2306 al
= SSL_AD_DECODE_ERROR
;
2307 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_LENGTH_MISMATCH
);
2310 p
= (unsigned char *)s
->init_msg
;
2311 if (*p
++ != TLSEXT_STATUSTYPE_ocsp
)
2313 al
= SSL_AD_DECODE_ERROR
;
2314 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_UNSUPPORTED_STATUS_TYPE
);
2318 if (resplen
+ 4 != n
)
2320 al
= SSL_AD_DECODE_ERROR
;
2321 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_LENGTH_MISMATCH
);
2324 if (s
->tlsext_ocsp_resp
)
2325 OPENSSL_free(s
->tlsext_ocsp_resp
);
2326 s
->tlsext_ocsp_resp
= BUF_memdup(p
, resplen
);
2327 if (!s
->tlsext_ocsp_resp
)
2329 al
= SSL_AD_INTERNAL_ERROR
;
2330 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,ERR_R_MALLOC_FAILURE
);
2333 s
->tlsext_ocsp_resplen
= resplen
;
2334 if (s
->ctx
->tlsext_status_cb
)
2337 ret
= s
->ctx
->tlsext_status_cb(s
, s
->ctx
->tlsext_status_arg
);
2340 al
= SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE
;
2341 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_INVALID_STATUS_RESPONSE
);
2346 al
= SSL_AD_INTERNAL_ERROR
;
2347 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,ERR_R_MALLOC_FAILURE
);
2353 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
2358 int ssl3_get_server_done(SSL
*s
)
2363 n
=s
->method
->ssl_get_message(s
,
2364 SSL3_ST_CR_SRVR_DONE_A
,
2365 SSL3_ST_CR_SRVR_DONE_B
,
2366 SSL3_MT_SERVER_DONE
,
2367 30, /* should be very small, like 0 :-) */
2370 if (!ok
) return((int)n
);
2373 /* should contain no data */
2374 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2375 SSLerr(SSL_F_SSL3_GET_SERVER_DONE
,SSL_R_LENGTH_MISMATCH
);
2383 int ssl3_send_client_key_exchange(SSL
*s
)
2387 unsigned long alg_k
;
2388 #ifndef OPENSSL_NO_RSA
2390 EVP_PKEY
*pkey
=NULL
;
2392 #ifndef OPENSSL_NO_KRB5
2394 #endif /* OPENSSL_NO_KRB5 */
2395 #ifndef OPENSSL_NO_ECDH
2396 EC_KEY
*clnt_ecdh
= NULL
;
2397 const EC_POINT
*srvr_ecpoint
= NULL
;
2398 EVP_PKEY
*srvr_pub_pkey
= NULL
;
2399 unsigned char *encodedPoint
= NULL
;
2400 int encoded_pt_len
= 0;
2401 BN_CTX
* bn_ctx
= NULL
;
2404 if (s
->state
== SSL3_ST_CW_KEY_EXCH_A
)
2406 p
= ssl_handshake_start(s
);
2408 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
2410 /* Fool emacs indentation */
2412 #ifndef OPENSSL_NO_RSA
2413 else if (alg_k
& SSL_kRSA
)
2416 unsigned char tmp_buf
[SSL_MAX_MASTER_KEY_LENGTH
];
2418 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
2419 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
2422 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
2423 if ((pkey
== NULL
) ||
2424 (pkey
->type
!= EVP_PKEY_RSA
) ||
2425 (pkey
->pkey
.rsa
== NULL
))
2427 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
2431 EVP_PKEY_free(pkey
);
2434 tmp_buf
[0]=s
->client_version
>>8;
2435 tmp_buf
[1]=s
->client_version
&0xff;
2436 if (RAND_bytes(&(tmp_buf
[2]),sizeof tmp_buf
-2) <= 0)
2439 s
->session
->master_key_length
=sizeof tmp_buf
;
2442 /* Fix buf for TLS and beyond */
2443 if (s
->version
> SSL3_VERSION
)
2445 n
=RSA_public_encrypt(sizeof tmp_buf
,
2446 tmp_buf
,p
,rsa
,RSA_PKCS1_PADDING
);
2448 if (s
->options
& SSL_OP_PKCS1_CHECK_1
) p
[1]++;
2449 if (s
->options
& SSL_OP_PKCS1_CHECK_2
) tmp_buf
[0]=0x70;
2453 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_BAD_RSA_ENCRYPT
);
2457 /* Fix buf for TLS and beyond */
2458 if (s
->version
> SSL3_VERSION
)
2464 s
->session
->master_key_length
=
2465 s
->method
->ssl3_enc
->generate_master_secret(s
,
2466 s
->session
->master_key
,
2467 tmp_buf
,sizeof tmp_buf
);
2468 OPENSSL_cleanse(tmp_buf
,sizeof tmp_buf
);
2471 #ifndef OPENSSL_NO_KRB5
2472 else if (alg_k
& SSL_kKRB5
)
2474 krb5_error_code krb5rc
;
2475 KSSL_CTX
*kssl_ctx
= s
->kssl_ctx
;
2476 /* krb5_data krb5_ap_req; */
2477 krb5_data
*enc_ticket
;
2478 krb5_data authenticator
, *authp
= NULL
;
2479 EVP_CIPHER_CTX ciph_ctx
;
2480 const EVP_CIPHER
*enc
= NULL
;
2481 unsigned char iv
[EVP_MAX_IV_LENGTH
];
2482 unsigned char tmp_buf
[SSL_MAX_MASTER_KEY_LENGTH
];
2483 unsigned char epms
[SSL_MAX_MASTER_KEY_LENGTH
2484 + EVP_MAX_IV_LENGTH
];
2485 int padl
, outl
= sizeof(epms
);
2487 EVP_CIPHER_CTX_init(&ciph_ctx
);
2490 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2492 #endif /* KSSL_DEBUG */
2496 if (KRB5SENDAUTH
) authp
= &authenticator
;
2497 #endif /* KRB5SENDAUTH */
2499 krb5rc
= kssl_cget_tkt(kssl_ctx
, &enc_ticket
, authp
,
2501 enc
= kssl_map_enc(kssl_ctx
->enctype
);
2506 printf("kssl_cget_tkt rtn %d\n", krb5rc
);
2507 if (krb5rc
&& kssl_err
.text
)
2508 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err
.text
);
2510 #endif /* KSSL_DEBUG */
2514 ssl3_send_alert(s
,SSL3_AL_FATAL
,
2515 SSL_AD_HANDSHAKE_FAILURE
);
2516 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2521 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2522 ** in place of RFC 2712 KerberosWrapper, as in:
2524 ** Send ticket (copy to *p, set n = length)
2525 ** n = krb5_ap_req.length;
2526 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2527 ** if (krb5_ap_req.data)
2528 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2530 ** Now using real RFC 2712 KerberosWrapper
2531 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2532 ** Note: 2712 "opaque" types are here replaced
2533 ** with a 2-byte length followed by the value.
2535 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2536 ** Where "xx xx" = length bytes. Shown here with
2537 ** optional authenticator omitted.
2540 /* KerberosWrapper.Ticket */
2541 s2n(enc_ticket
->length
,p
);
2542 memcpy(p
, enc_ticket
->data
, enc_ticket
->length
);
2543 p
+= enc_ticket
->length
;
2544 n
= enc_ticket
->length
+ 2;
2546 /* KerberosWrapper.Authenticator */
2547 if (authp
&& authp
->length
)
2549 s2n(authp
->length
,p
);
2550 memcpy(p
, authp
->data
, authp
->length
);
2552 n
+= authp
->length
+ 2;
2560 s2n(0,p
);/* null authenticator length */
2564 tmp_buf
[0]=s
->client_version
>>8;
2565 tmp_buf
[1]=s
->client_version
&0xff;
2566 if (RAND_bytes(&(tmp_buf
[2]),sizeof tmp_buf
-2) <= 0)
2569 /* 20010420 VRS. Tried it this way; failed.
2570 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2571 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2572 ** kssl_ctx->length);
2573 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2576 memset(iv
, 0, sizeof iv
); /* per RFC 1510 */
2577 EVP_EncryptInit_ex(&ciph_ctx
,enc
, NULL
,
2579 EVP_EncryptUpdate(&ciph_ctx
,epms
,&outl
,tmp_buf
,
2581 EVP_EncryptFinal_ex(&ciph_ctx
,&(epms
[outl
]),&padl
);
2583 if (outl
> (int)sizeof epms
)
2585 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
2588 EVP_CIPHER_CTX_cleanup(&ciph_ctx
);
2590 /* KerberosWrapper.EncryptedPreMasterSecret */
2592 memcpy(p
, epms
, outl
);
2596 s
->session
->master_key_length
=
2597 s
->method
->ssl3_enc
->generate_master_secret(s
,
2598 s
->session
->master_key
,
2599 tmp_buf
, sizeof tmp_buf
);
2601 OPENSSL_cleanse(tmp_buf
, sizeof tmp_buf
);
2602 OPENSSL_cleanse(epms
, outl
);
2605 #ifndef OPENSSL_NO_DH
2606 else if (alg_k
& (SSL_kDHE
|SSL_kDHr
|SSL_kDHd
))
2608 DH
*dh_srvr
,*dh_clnt
;
2609 SESS_CERT
*scert
= s
->session
->sess_cert
;
2613 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
2614 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_UNEXPECTED_MESSAGE
);
2618 if (scert
->peer_dh_tmp
!= NULL
)
2619 dh_srvr
=scert
->peer_dh_tmp
;
2622 /* we get them from the cert */
2623 int idx
= scert
->peer_cert_type
;
2624 EVP_PKEY
*spkey
= NULL
;
2627 spkey
= X509_get_pubkey(
2628 scert
->peer_pkeys
[idx
].x509
);
2631 dh_srvr
= EVP_PKEY_get1_DH(spkey
);
2632 EVP_PKEY_free(spkey
);
2634 if (dh_srvr
== NULL
)
2636 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2637 ERR_R_INTERNAL_ERROR
);
2641 if (s
->s3
->flags
& TLS1_FLAGS_SKIP_CERT_VERIFY
)
2643 /* Use client certificate key */
2644 EVP_PKEY
*clkey
= s
->cert
->key
->privatekey
;
2647 dh_clnt
= EVP_PKEY_get1_DH(clkey
);
2648 if (dh_clnt
== NULL
)
2650 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2651 ERR_R_INTERNAL_ERROR
);
2657 /* generate a new random key */
2658 if ((dh_clnt
=DHparams_dup(dh_srvr
)) == NULL
)
2660 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2663 if (!DH_generate_key(dh_clnt
))
2665 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2671 /* use the 'p' output buffer for the DH key, but
2672 * make sure to clear it out afterwards */
2674 n
=DH_compute_key(p
,dh_srvr
->pub_key
,dh_clnt
);
2675 if (scert
->peer_dh_tmp
== NULL
)
2680 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2685 /* generate master key from the result */
2686 s
->session
->master_key_length
=
2687 s
->method
->ssl3_enc
->generate_master_secret(s
,
2688 s
->session
->master_key
,p
,n
);
2692 if (s
->s3
->flags
& TLS1_FLAGS_SKIP_CERT_VERIFY
)
2696 /* send off the data */
2697 n
=BN_num_bytes(dh_clnt
->pub_key
);
2699 BN_bn2bin(dh_clnt
->pub_key
,p
);
2705 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2709 #ifndef OPENSSL_NO_ECDH
2710 else if (alg_k
& (SSL_kECDHE
|SSL_kECDHr
|SSL_kECDHe
))
2712 const EC_GROUP
*srvr_group
= NULL
;
2714 int ecdh_clnt_cert
= 0;
2717 if (s
->session
->sess_cert
== NULL
)
2719 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
2720 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_UNEXPECTED_MESSAGE
);
2724 /* Did we send out the client's
2725 * ECDH share for use in premaster
2726 * computation as part of client certificate?
2727 * If so, set ecdh_clnt_cert to 1.
2729 if ((alg_k
& (SSL_kECDHr
|SSL_kECDHe
)) && (s
->cert
!= NULL
))
2731 /* XXX: For now, we do not support client
2732 * authentication using ECDH certificates.
2733 * To add such support, one needs to add
2734 * code that checks for appropriate
2735 * conditions and sets ecdh_clnt_cert to 1.
2736 * For example, the cert have an ECC
2737 * key on the same curve as the server's
2738 * and the key should be authorized for
2741 * One also needs to add code in ssl3_connect
2742 * to skip sending the certificate verify
2745 * if ((s->cert->key->privatekey != NULL) &&
2746 * (s->cert->key->privatekey->type ==
2747 * EVP_PKEY_EC) && ...)
2748 * ecdh_clnt_cert = 1;
2752 if (s
->session
->sess_cert
->peer_ecdh_tmp
!= NULL
)
2754 tkey
= s
->session
->sess_cert
->peer_ecdh_tmp
;
2758 /* Get the Server Public Key from Cert */
2759 srvr_pub_pkey
= X509_get_pubkey(s
->session
-> \
2760 sess_cert
->peer_pkeys
[SSL_PKEY_ECC
].x509
);
2761 if ((srvr_pub_pkey
== NULL
) ||
2762 (srvr_pub_pkey
->type
!= EVP_PKEY_EC
) ||
2763 (srvr_pub_pkey
->pkey
.ec
== NULL
))
2765 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2766 ERR_R_INTERNAL_ERROR
);
2770 tkey
= srvr_pub_pkey
->pkey
.ec
;
2773 srvr_group
= EC_KEY_get0_group(tkey
);
2774 srvr_ecpoint
= EC_KEY_get0_public_key(tkey
);
2776 if ((srvr_group
== NULL
) || (srvr_ecpoint
== NULL
))
2778 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2779 ERR_R_INTERNAL_ERROR
);
2783 if ((clnt_ecdh
=EC_KEY_new()) == NULL
)
2785 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2789 if (!EC_KEY_set_group(clnt_ecdh
, srvr_group
))
2791 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_EC_LIB
);
2796 /* Reuse key info from our certificate
2797 * We only need our private key to perform
2798 * the ECDH computation.
2800 const BIGNUM
*priv_key
;
2801 tkey
= s
->cert
->key
->privatekey
->pkey
.ec
;
2802 priv_key
= EC_KEY_get0_private_key(tkey
);
2803 if (priv_key
== NULL
)
2805 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2808 if (!EC_KEY_set_private_key(clnt_ecdh
, priv_key
))
2810 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_EC_LIB
);
2816 /* Generate a new ECDH key pair */
2817 if (!(EC_KEY_generate_key(clnt_ecdh
)))
2819 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
, ERR_R_ECDH_LIB
);
2824 /* use the 'p' output buffer for the ECDH key, but
2825 * make sure to clear it out afterwards
2828 field_size
= EC_GROUP_get_degree(srvr_group
);
2829 if (field_size
<= 0)
2831 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2835 n
=ECDH_compute_key(p
, (field_size
+7)/8, srvr_ecpoint
, clnt_ecdh
, NULL
);
2838 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2843 /* generate master key from the result */
2844 s
->session
->master_key_length
= s
->method
->ssl3_enc \
2845 -> generate_master_secret(s
,
2846 s
->session
->master_key
,
2849 memset(p
, 0, n
); /* clean up */
2853 /* Send empty client key exch message */
2858 /* First check the size of encoding and
2859 * allocate memory accordingly.
2862 EC_POINT_point2oct(srvr_group
,
2863 EC_KEY_get0_public_key(clnt_ecdh
),
2864 POINT_CONVERSION_UNCOMPRESSED
,
2867 encodedPoint
= (unsigned char *)
2868 OPENSSL_malloc(encoded_pt_len
*
2869 sizeof(unsigned char));
2870 bn_ctx
= BN_CTX_new();
2871 if ((encodedPoint
== NULL
) ||
2874 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2878 /* Encode the public key */
2879 n
= EC_POINT_point2oct(srvr_group
,
2880 EC_KEY_get0_public_key(clnt_ecdh
),
2881 POINT_CONVERSION_UNCOMPRESSED
,
2882 encodedPoint
, encoded_pt_len
, bn_ctx
);
2884 *p
= n
; /* length of encoded point */
2885 /* Encoded point will be copied here */
2887 /* copy the point */
2888 memcpy((unsigned char *)p
, encodedPoint
, n
);
2889 /* increment n to account for length field */
2893 /* Free allocated memory */
2894 BN_CTX_free(bn_ctx
);
2895 if (encodedPoint
!= NULL
) OPENSSL_free(encodedPoint
);
2896 if (clnt_ecdh
!= NULL
)
2897 EC_KEY_free(clnt_ecdh
);
2898 EVP_PKEY_free(srvr_pub_pkey
);
2900 #endif /* !OPENSSL_NO_ECDH */
2901 else if (alg_k
& SSL_kGOST
)
2903 /* GOST key exchange message creation */
2904 EVP_PKEY_CTX
*pkey_ctx
;
2907 unsigned int md_len
;
2909 unsigned char premaster_secret
[32],shared_ukm
[32], tmp
[256];
2910 EVP_MD_CTX
*ukm_hash
;
2913 /* Get server sertificate PKEY and create ctx from it */
2914 peer_cert
=s
->session
->sess_cert
->peer_pkeys
[(keytype
=SSL_PKEY_GOST01
)].x509
;
2916 peer_cert
=s
->session
->sess_cert
->peer_pkeys
[(keytype
=SSL_PKEY_GOST94
)].x509
;
2918 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER
);
2922 pkey_ctx
=EVP_PKEY_CTX_new(pub_key
=X509_get_pubkey(peer_cert
),NULL
);
2923 /* If we have send a certificate, and certificate key
2925 * parameters match those of server certificate, use
2926 * certificate key for key exchange
2929 /* Otherwise, generate ephemeral key pair */
2931 EVP_PKEY_encrypt_init(pkey_ctx
);
2932 /* Generate session key */
2933 RAND_bytes(premaster_secret
,32);
2934 /* If we have client certificate, use its secret as peer key */
2935 if (s
->s3
->tmp
.cert_req
&& s
->cert
->key
->privatekey
) {
2936 if (EVP_PKEY_derive_set_peer(pkey_ctx
,s
->cert
->key
->privatekey
) <=0) {
2937 /* If there was an error - just ignore it. Ephemeral key
2943 /* Compute shared IV and store it in algorithm-specific
2945 ukm_hash
= EVP_MD_CTX_create();
2946 EVP_DigestInit(ukm_hash
,EVP_get_digestbynid(NID_id_GostR3411_94
));
2947 EVP_DigestUpdate(ukm_hash
,s
->s3
->client_random
,SSL3_RANDOM_SIZE
);
2948 EVP_DigestUpdate(ukm_hash
,s
->s3
->server_random
,SSL3_RANDOM_SIZE
);
2949 EVP_DigestFinal_ex(ukm_hash
, shared_ukm
, &md_len
);
2950 EVP_MD_CTX_destroy(ukm_hash
);
2951 if (EVP_PKEY_CTX_ctrl(pkey_ctx
,-1,EVP_PKEY_OP_ENCRYPT
,EVP_PKEY_CTRL_SET_IV
,
2953 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2957 /* Make GOST keytransport blob message */
2958 /*Encapsulate it into sequence */
2959 *(p
++)=V_ASN1_SEQUENCE
| V_ASN1_CONSTRUCTED
;
2961 if (EVP_PKEY_encrypt(pkey_ctx
,tmp
,&msglen
,premaster_secret
,32)<0) {
2962 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2969 *(p
++)= msglen
& 0xff;
2974 *(p
++)= msglen
& 0xff;
2977 memcpy(p
, tmp
, msglen
);
2978 /* Check if pubkey from client certificate was used */
2979 if (EVP_PKEY_CTX_ctrl(pkey_ctx
, -1, -1, EVP_PKEY_CTRL_PEER_KEY
, 2, NULL
) > 0)
2981 /* Set flag "skip certificate verify" */
2982 s
->s3
->flags
|= TLS1_FLAGS_SKIP_CERT_VERIFY
;
2984 EVP_PKEY_CTX_free(pkey_ctx
);
2985 s
->session
->master_key_length
=
2986 s
->method
->ssl3_enc
->generate_master_secret(s
,
2987 s
->session
->master_key
,premaster_secret
,32);
2988 EVP_PKEY_free(pub_key
);
2991 #ifndef OPENSSL_NO_SRP
2992 else if (alg_k
& SSL_kSRP
)
2994 if (s
->srp_ctx
.A
!= NULL
)
2996 /* send off the data */
2997 n
=BN_num_bytes(s
->srp_ctx
.A
);
2999 BN_bn2bin(s
->srp_ctx
.A
,p
);
3004 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
3007 if (s
->session
->srp_username
!= NULL
)
3008 OPENSSL_free(s
->session
->srp_username
);
3009 s
->session
->srp_username
= BUF_strdup(s
->srp_ctx
.login
);
3010 if (s
->session
->srp_username
== NULL
)
3012 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3013 ERR_R_MALLOC_FAILURE
);
3017 if ((s
->session
->master_key_length
= SRP_generate_client_master_secret(s
,s
->session
->master_key
))<0)
3019 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
3024 #ifndef OPENSSL_NO_PSK
3025 else if (alg_k
& SSL_kPSK
)
3027 char identity
[PSK_MAX_IDENTITY_LEN
];
3028 unsigned char *t
= NULL
;
3029 unsigned char psk_or_pre_ms
[PSK_MAX_PSK_LEN
*2+4];
3030 unsigned int pre_ms_len
= 0, psk_len
= 0;
3034 if (s
->psk_client_callback
== NULL
)
3036 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3037 SSL_R_PSK_NO_CLIENT_CB
);
3041 psk_len
= s
->psk_client_callback(s
, s
->ctx
->psk_identity_hint
,
3042 identity
, PSK_MAX_IDENTITY_LEN
,
3043 psk_or_pre_ms
, sizeof(psk_or_pre_ms
));
3044 if (psk_len
> PSK_MAX_PSK_LEN
)
3046 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3047 ERR_R_INTERNAL_ERROR
);
3050 else if (psk_len
== 0)
3052 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3053 SSL_R_PSK_IDENTITY_NOT_FOUND
);
3057 /* create PSK pre_master_secret */
3058 pre_ms_len
= 2+psk_len
+2+psk_len
;
3060 memmove(psk_or_pre_ms
+psk_len
+4, psk_or_pre_ms
, psk_len
);
3062 memset(t
, 0, psk_len
);
3066 if (s
->session
->psk_identity_hint
!= NULL
)
3067 OPENSSL_free(s
->session
->psk_identity_hint
);
3068 s
->session
->psk_identity_hint
= BUF_strdup(s
->ctx
->psk_identity_hint
);
3069 if (s
->ctx
->psk_identity_hint
!= NULL
&&
3070 s
->session
->psk_identity_hint
== NULL
)
3072 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3073 ERR_R_MALLOC_FAILURE
);
3077 if (s
->session
->psk_identity
!= NULL
)
3078 OPENSSL_free(s
->session
->psk_identity
);
3079 s
->session
->psk_identity
= BUF_strdup(identity
);
3080 if (s
->session
->psk_identity
== NULL
)
3082 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3083 ERR_R_MALLOC_FAILURE
);
3087 s
->session
->master_key_length
=
3088 s
->method
->ssl3_enc
->generate_master_secret(s
,
3089 s
->session
->master_key
,
3090 psk_or_pre_ms
, pre_ms_len
);
3091 n
= strlen(identity
);
3093 memcpy(p
, identity
, n
);
3097 OPENSSL_cleanse(identity
, PSK_MAX_IDENTITY_LEN
);
3098 OPENSSL_cleanse(psk_or_pre_ms
, sizeof(psk_or_pre_ms
));
3101 ssl3_send_alert(s
, SSL3_AL_FATAL
, SSL_AD_HANDSHAKE_FAILURE
);
3108 ssl3_send_alert(s
, SSL3_AL_FATAL
,
3109 SSL_AD_HANDSHAKE_FAILURE
);
3110 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3111 ERR_R_INTERNAL_ERROR
);
3115 ssl_set_handshake_header(s
, SSL3_MT_CLIENT_KEY_EXCHANGE
, n
);
3116 s
->state
=SSL3_ST_CW_KEY_EXCH_B
;
3119 /* SSL3_ST_CW_KEY_EXCH_B */
3120 return ssl_do_write(s
);
3122 #ifndef OPENSSL_NO_ECDH
3123 BN_CTX_free(bn_ctx
);
3124 if (encodedPoint
!= NULL
) OPENSSL_free(encodedPoint
);
3125 if (clnt_ecdh
!= NULL
)
3126 EC_KEY_free(clnt_ecdh
);
3127 EVP_PKEY_free(srvr_pub_pkey
);
3132 int ssl3_send_client_verify(SSL
*s
)
3135 unsigned char data
[MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
];
3137 EVP_PKEY_CTX
*pctx
=NULL
;
3143 EVP_MD_CTX_init(&mctx
);
3145 if (s
->state
== SSL3_ST_CW_CERT_VRFY_A
)
3147 p
= ssl_handshake_start(s
);
3148 pkey
=s
->cert
->key
->privatekey
;
3149 /* Create context from key and test if sha1 is allowed as digest */
3150 pctx
= EVP_PKEY_CTX_new(pkey
,NULL
);
3151 EVP_PKEY_sign_init(pctx
);
3152 if (EVP_PKEY_CTX_set_signature_md(pctx
, EVP_sha1())>0)
3154 if (!SSL_USE_SIGALGS(s
))
3155 s
->method
->ssl3_enc
->cert_verify_mac(s
,
3157 &(data
[MD5_DIGEST_LENGTH
]));
3163 /* For TLS v1.2 send signature algorithm and signature
3164 * using agreed digest and cached handshake records.
3166 if (SSL_USE_SIGALGS(s
))
3170 const EVP_MD
*md
= s
->cert
->key
->digest
;
3171 hdatalen
= BIO_get_mem_data(s
->s3
->handshake_buffer
,
3173 if (hdatalen
<= 0 || !tls12_get_sigandhash(p
, pkey
, md
))
3175 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3176 ERR_R_INTERNAL_ERROR
);
3181 fprintf(stderr
, "Using TLS 1.2 with client alg %s\n",
3184 if (!EVP_SignInit_ex(&mctx
, md
, NULL
)
3185 || !EVP_SignUpdate(&mctx
, hdata
, hdatalen
)
3186 || !EVP_SignFinal(&mctx
, p
+ 2, &u
, pkey
))
3188 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3194 if (!ssl3_digest_cached_records(s
))
3198 #ifndef OPENSSL_NO_RSA
3199 if (pkey
->type
== EVP_PKEY_RSA
)
3201 s
->method
->ssl3_enc
->cert_verify_mac(s
,
3204 if (RSA_sign(NID_md5_sha1
, data
,
3205 MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
,
3206 &(p
[2]), &u
, pkey
->pkey
.rsa
) <= 0 )
3208 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_RSA_LIB
);
3216 #ifndef OPENSSL_NO_DSA
3217 if (pkey
->type
== EVP_PKEY_DSA
)
3219 if (!DSA_sign(pkey
->save_type
,
3220 &(data
[MD5_DIGEST_LENGTH
]),
3221 SHA_DIGEST_LENGTH
,&(p
[2]),
3222 (unsigned int *)&j
,pkey
->pkey
.dsa
))
3224 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_DSA_LIB
);
3232 #ifndef OPENSSL_NO_ECDSA
3233 if (pkey
->type
== EVP_PKEY_EC
)
3235 if (!ECDSA_sign(pkey
->save_type
,
3236 &(data
[MD5_DIGEST_LENGTH
]),
3237 SHA_DIGEST_LENGTH
,&(p
[2]),
3238 (unsigned int *)&j
,pkey
->pkey
.ec
))
3240 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3249 if (pkey
->type
== NID_id_GostR3410_94
|| pkey
->type
== NID_id_GostR3410_2001
)
3251 unsigned char signbuf
[64];
3254 s
->method
->ssl3_enc
->cert_verify_mac(s
,
3255 NID_id_GostR3411_94
,
3257 if (EVP_PKEY_sign(pctx
, signbuf
, &sigsize
, data
, 32) <= 0) {
3258 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3259 ERR_R_INTERNAL_ERROR
);
3262 for (i
=63,j
=0; i
>=0; j
++, i
--) {
3270 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_INTERNAL_ERROR
);
3273 ssl_set_handshake_header(s
, SSL3_MT_CERTIFICATE_VERIFY
, n
);
3274 s
->state
=SSL3_ST_CW_CERT_VRFY_B
;
3276 EVP_MD_CTX_cleanup(&mctx
);
3277 EVP_PKEY_CTX_free(pctx
);
3278 return ssl_do_write(s
);
3280 EVP_MD_CTX_cleanup(&mctx
);
3281 EVP_PKEY_CTX_free(pctx
);
3285 /* Check a certificate can be used for client authentication. Currently
3286 * check cert exists, if we have a suitable digest for TLS 1.2 if
3287 * static DH client certificates can be used and optionally checks
3288 * suitability for Suite B.
3290 static int ssl3_check_client_certificate(SSL
*s
)
3292 unsigned long alg_k
;
3293 if (!s
->cert
|| !s
->cert
->key
->x509
|| !s
->cert
->key
->privatekey
)
3295 /* If no suitable signature algorithm can't use certificate */
3296 if (SSL_USE_SIGALGS(s
) && !s
->cert
->key
->digest
)
3298 /* If strict mode check suitability of chain before using it.
3299 * This also adjusts suite B digest if necessary.
3301 if (s
->cert
->cert_flags
& SSL_CERT_FLAGS_CHECK_TLS_STRICT
&&
3302 !tls1_check_chain(s
, NULL
, NULL
, NULL
, -2))
3304 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
3305 /* See if we can use client certificate for fixed DH */
3306 if (alg_k
& (SSL_kDHr
|SSL_kDHd
))
3308 SESS_CERT
*scert
= s
->session
->sess_cert
;
3309 int i
= scert
->peer_cert_type
;
3310 EVP_PKEY
*clkey
= NULL
, *spkey
= NULL
;
3311 clkey
= s
->cert
->key
->privatekey
;
3312 /* If client key not DH assume it can be used */
3313 if (EVP_PKEY_id(clkey
) != EVP_PKEY_DH
)
3316 spkey
= X509_get_pubkey(scert
->peer_pkeys
[i
].x509
);
3319 /* Compare server and client parameters */
3320 i
= EVP_PKEY_cmp_parameters(clkey
, spkey
);
3321 EVP_PKEY_free(spkey
);
3325 s
->s3
->flags
|= TLS1_FLAGS_SKIP_CERT_VERIFY
;
3330 int ssl3_send_client_certificate(SSL
*s
)
3333 EVP_PKEY
*pkey
=NULL
;
3336 if (s
->state
== SSL3_ST_CW_CERT_A
)
3338 /* Let cert callback update client certificates if required */
3339 if (s
->cert
->cert_cb
)
3341 i
= s
->cert
->cert_cb(s
, s
->cert
->cert_cb_arg
);
3344 s
->rwstate
=SSL_X509_LOOKUP
;
3349 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_INTERNAL_ERROR
);
3352 s
->rwstate
=SSL_NOTHING
;
3354 if (ssl3_check_client_certificate(s
))
3355 s
->state
=SSL3_ST_CW_CERT_C
;
3357 s
->state
=SSL3_ST_CW_CERT_B
;
3360 /* We need to get a client cert */
3361 if (s
->state
== SSL3_ST_CW_CERT_B
)
3363 /* If we get an error, we need to
3364 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3365 * We then get retied later */
3367 i
= ssl_do_client_cert_cb(s
, &x509
, &pkey
);
3370 s
->rwstate
=SSL_X509_LOOKUP
;
3373 s
->rwstate
=SSL_NOTHING
;
3374 if ((i
== 1) && (pkey
!= NULL
) && (x509
!= NULL
))
3376 s
->state
=SSL3_ST_CW_CERT_B
;
3377 if ( !SSL_use_certificate(s
,x509
) ||
3378 !SSL_use_PrivateKey(s
,pkey
))
3384 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE
,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK
);
3387 if (x509
!= NULL
) X509_free(x509
);
3388 if (pkey
!= NULL
) EVP_PKEY_free(pkey
);
3389 if (i
&& !ssl3_check_client_certificate(s
))
3393 if (s
->version
== SSL3_VERSION
)
3395 s
->s3
->tmp
.cert_req
=0;
3396 ssl3_send_alert(s
,SSL3_AL_WARNING
,SSL_AD_NO_CERTIFICATE
);
3401 s
->s3
->tmp
.cert_req
=2;
3405 /* Ok, we have a cert */
3406 s
->state
=SSL3_ST_CW_CERT_C
;
3409 if (s
->state
== SSL3_ST_CW_CERT_C
)
3411 s
->state
=SSL3_ST_CW_CERT_D
;
3412 if (!ssl3_output_cert_chain(s
,
3413 (s
->s3
->tmp
.cert_req
== 2)?NULL
:s
->cert
->key
))
3415 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE
, ERR_R_INTERNAL_ERROR
);
3416 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_INTERNAL_ERROR
);
3420 /* SSL3_ST_CW_CERT_D */
3421 return ssl_do_write(s
);
3424 #define has_bits(i,m) (((i)&(m)) == (m))
3426 int ssl3_check_cert_and_algorithm(SSL
*s
)
3430 EVP_PKEY
*pkey
=NULL
;
3432 #ifndef OPENSSL_NO_RSA
3435 #ifndef OPENSSL_NO_DH
3439 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
3440 alg_a
=s
->s3
->tmp
.new_cipher
->algorithm_auth
;
3442 /* we don't have a certificate */
3443 if ((alg_a
& (SSL_aNULL
|SSL_aKRB5
)) || (alg_k
& SSL_kPSK
))
3446 sc
=s
->session
->sess_cert
;
3449 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,ERR_R_INTERNAL_ERROR
);
3453 #ifndef OPENSSL_NO_RSA
3454 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
3456 #ifndef OPENSSL_NO_DH
3457 dh
=s
->session
->sess_cert
->peer_dh_tmp
;
3460 /* This is the passed certificate */
3462 idx
=sc
->peer_cert_type
;
3463 #ifndef OPENSSL_NO_ECDH
3464 if (idx
== SSL_PKEY_ECC
)
3466 if (ssl_check_srvr_ecc_cert_and_alg(sc
->peer_pkeys
[idx
].x509
,
3468 { /* check failed */
3469 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_BAD_ECC_CERT
);
3477 else if (alg_a
& SSL_aECDSA
)
3479 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_ECDSA_SIGNING_CERT
);
3482 else if (alg_k
& (SSL_kECDHr
|SSL_kECDHe
))
3484 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_ECDH_CERT
);
3488 pkey
=X509_get_pubkey(sc
->peer_pkeys
[idx
].x509
);
3489 i
=X509_certificate_type(sc
->peer_pkeys
[idx
].x509
,pkey
);
3490 EVP_PKEY_free(pkey
);
3493 /* Check that we have a certificate if we require one */
3494 if ((alg_a
& SSL_aRSA
) && !has_bits(i
,EVP_PK_RSA
|EVP_PKT_SIGN
))
3496 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_SIGNING_CERT
);
3499 #ifndef OPENSSL_NO_DSA
3500 else if ((alg_a
& SSL_aDSS
) && !has_bits(i
,EVP_PK_DSA
|EVP_PKT_SIGN
))
3502 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DSA_SIGNING_CERT
);
3506 #ifndef OPENSSL_NO_RSA
3507 if ((alg_k
& SSL_kRSA
) &&
3508 !(has_bits(i
,EVP_PK_RSA
|EVP_PKT_ENC
) || (rsa
!= NULL
)))
3510 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_ENCRYPTING_CERT
);
3514 #ifndef OPENSSL_NO_DH
3515 if ((alg_k
& SSL_kDHE
) &&
3516 !(has_bits(i
,EVP_PK_DH
|EVP_PKT_EXCH
) || (dh
!= NULL
)))
3518 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_KEY
);
3521 else if ((alg_k
& SSL_kDHr
) && !SSL_USE_SIGALGS(s
) &&
3522 !has_bits(i
,EVP_PK_DH
|EVP_PKS_RSA
))
3524 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_RSA_CERT
);
3527 #ifndef OPENSSL_NO_DSA
3528 else if ((alg_k
& SSL_kDHd
) && !SSL_USE_SIGALGS(s
) &&
3529 !has_bits(i
,EVP_PK_DH
|EVP_PKS_DSA
))
3531 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_DSA_CERT
);
3537 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) && !has_bits(i
,EVP_PKT_EXP
))
3539 #ifndef OPENSSL_NO_RSA
3540 if (alg_k
& SSL_kRSA
)
3543 || RSA_size(rsa
)*8 > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
3545 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_RSA_KEY
);
3551 #ifndef OPENSSL_NO_DH
3552 if (alg_k
& (SSL_kDHE
|SSL_kDHr
|SSL_kDHd
))
3555 || DH_size(dh
)*8 > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
3557 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_DH_KEY
);
3564 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE
);
3570 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_HANDSHAKE_FAILURE
);
3575 /* Check to see if handshake is full or resumed. Usually this is just a
3576 * case of checking to see if a cache hit has occurred. In the case of
3577 * session tickets we have to check the next message to be sure.
3580 #ifndef OPENSSL_NO_TLSEXT
3581 # ifndef OPENSSL_NO_NEXTPROTONEG
3582 int ssl3_send_next_proto(SSL
*s
)
3584 unsigned int len
, padding_len
;
3587 if (s
->state
== SSL3_ST_CW_NEXT_PROTO_A
)
3589 len
= s
->next_proto_negotiated_len
;
3590 padding_len
= 32 - ((len
+ 2) % 32);
3591 d
= (unsigned char *)s
->init_buf
->data
;
3593 memcpy(d
+ 5, s
->next_proto_negotiated
, len
);
3594 d
[5 + len
] = padding_len
;
3595 memset(d
+ 6 + len
, 0, padding_len
);
3596 *(d
++)=SSL3_MT_NEXT_PROTO
;
3597 l2n3(2 + len
+ padding_len
, d
);
3598 s
->state
= SSL3_ST_CW_NEXT_PROTO_B
;
3599 s
->init_num
= 4 + 2 + len
+ padding_len
;
3603 return ssl3_do_write(s
, SSL3_RT_HANDSHAKE
);
3607 int ssl3_check_finished(SSL
*s
)
3612 /* Read the message to see if it is supplemental data,
3613 * regardless if there is a session ticket this function is
3614 * called when we really expect a Certificate message, so
3615 * permit appropriate message length */
3616 n
=s
->method
->ssl_get_message(s
,
3622 if (!ok
) return((int)n
);
3623 s
->s3
->tmp
.reuse_message
= 1;
3625 if (s
->s3
->tmp
.message_type
== SSL3_MT_SUPPLEMENTAL_DATA
)
3627 /* If we have no ticket it cannot be a resumed session. */
3628 if (!s
->session
->tlsext_tick
)
3630 if ((s
->s3
->tmp
.message_type
== SSL3_MT_FINISHED
)
3631 || (s
->s3
->tmp
.message_type
== SSL3_MT_NEWSESSION_TICKET
))
3638 int ssl_do_client_cert_cb(SSL
*s
, X509
**px509
, EVP_PKEY
**ppkey
)
3641 #ifndef OPENSSL_NO_ENGINE
3642 if (s
->ctx
->client_cert_engine
)
3644 i
= ENGINE_load_ssl_client_cert(s
->ctx
->client_cert_engine
, s
,
3645 SSL_get_client_CA_list(s
),
3646 px509
, ppkey
, NULL
, NULL
, NULL
);
3651 if (s
->ctx
->client_cert_cb
)
3652 i
= s
->ctx
->client_cert_cb(s
,px509
,ppkey
);
3656 #ifndef OPENSSL_NO_TLSEXT
3657 int tls1_send_client_supplemental_data(SSL
*s
, int *skip
)
3660 if (s
->ctx
->cli_supp_data_records_count
)
3662 unsigned char *p
= NULL
;
3663 unsigned char *size_loc
= NULL
;
3664 cli_supp_data_record
*record
= NULL
;
3668 for (i
= 0; i
< s
->ctx
->cli_supp_data_records_count
; i
++)
3670 const unsigned char *out
= NULL
;
3671 unsigned short outlen
= 0;
3673 record
= &s
->ctx
->cli_supp_data_records
[i
];
3675 /* NULL callback or -1 omits supp data entry*/
3678 cb_retval
= record
->fn2(s
, record
->supp_data_type
,
3681 if (cb_retval
== -1)
3682 continue; /* skip this supp data entry */
3685 SSLerr(SSL_F_TLS1_SEND_CLIENT_SUPPLEMENTAL_DATA
,ERR_R_BUF_LIB
);
3688 if (outlen
== 0 || TLSEXT_MAXLEN_supplemental_data
< outlen
+ 4 + length
)
3690 SSLerr(SSL_F_TLS1_SEND_CLIENT_SUPPLEMENTAL_DATA
,ERR_R_BUF_LIB
);
3693 /* if first entry, write handshake message type */
3696 if (!BUF_MEM_grow_clean(s
->init_buf
, 4))
3698 SSLerr(SSL_F_TLS1_SEND_CLIENT_SUPPLEMENTAL_DATA
,ERR_R_BUF_LIB
);
3701 p
= (unsigned char *)s
->init_buf
->data
;
3702 *(p
++) = SSL3_MT_SUPPLEMENTAL_DATA
;
3703 /* update message length when all
3704 * callbacks complete */
3706 /* skip over handshake length field (3
3707 * bytes) and supp_data length field
3712 if (!BUF_MEM_grow(s
->init_buf
, outlen
+ 4))
3714 SSLerr(SSL_F_TLS1_SEND_CLIENT_SUPPLEMENTAL_DATA
,ERR_R_BUF_LIB
);
3717 s2n(record
->supp_data_type
, p
);
3719 memcpy(p
, out
, outlen
);
3720 length
+= (outlen
+ 4);
3725 /* write handshake length */
3726 l2n3(length
- 4, size_loc
);
3727 /* supp_data length */
3728 l2n3(length
- 7, size_loc
);
3729 s
->state
= SSL3_ST_CW_SUPPLEMENTAL_DATA_B
;
3730 s
->init_num
= length
;
3732 return ssl3_do_write(s
, SSL3_RT_HANDSHAKE
);
3736 /* no supp data message sent */
3743 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
3747 int tls1_get_server_supplemental_data(SSL
*s
)
3752 const unsigned char *p
, *d
;
3753 unsigned short supp_data_entry_type
= 0;
3754 unsigned short supp_data_entry_len
= 0;
3755 unsigned long supp_data_len
= 0;
3759 n
=s
->method
->ssl_get_message(s
,
3760 SSL3_ST_CR_SUPPLEMENTAL_DATA_A
,
3761 SSL3_ST_CR_SUPPLEMENTAL_DATA_B
,
3762 SSL3_MT_SUPPLEMENTAL_DATA
,
3763 /* use default limit */
3764 TLSEXT_MAXLEN_supplemental_data
,
3767 if (!ok
) return((int)n
);
3769 p
= (unsigned char *)s
->init_msg
;
3771 /* The message cannot be empty */
3774 al
= SSL_AD_DECODE_ERROR
;
3775 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA
,SSL_R_LENGTH_MISMATCH
);
3778 n2l3(p
, supp_data_len
);
3779 while (p
< d
+supp_data_len
)
3781 n2s(p
, supp_data_entry_type
);
3782 n2s(p
, supp_data_entry_len
);
3783 /* if there is a callback for this supp data type, send it */
3784 for (i
=0; i
< s
->ctx
->cli_supp_data_records_count
; i
++)
3786 if (s
->ctx
->cli_supp_data_records
[i
].supp_data_type
== supp_data_entry_type
&&
3787 s
->ctx
->cli_supp_data_records
[i
].fn1
)
3789 cb_retval
= s
->ctx
->cli_supp_data_records
[i
].fn1(s
, supp_data_entry_type
, p
,
3790 supp_data_entry_len
, &al
,
3791 s
->ctx
->cli_supp_data_records
[i
].arg
);
3794 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA
, ERR_R_SSL_LIB
);
3799 p
+= supp_data_entry_len
;
3803 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);