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 /* s->version=SSL3_VERSION; */
245 s
->type
=SSL_ST_CONNECT
;
247 if (s
->init_buf
== NULL
)
249 if ((buf
=BUF_MEM_new()) == NULL
)
254 if (!BUF_MEM_grow(buf
,SSL3_RT_MAX_PLAIN_LENGTH
))
263 if (!ssl3_setup_buffers(s
)) { ret
= -1; goto end
; }
265 /* setup buffing BIO */
266 if (!ssl_init_wbio_buffer(s
,0)) { ret
= -1; goto end
; }
268 /* don't push the buffering BIO quite yet */
270 ssl3_init_finished_mac(s
);
272 s
->state
=SSL3_ST_CW_CLNT_HELLO_A
;
273 s
->ctx
->stats
.sess_connect
++;
277 case SSL3_ST_CW_CLNT_HELLO_A
:
278 case SSL3_ST_CW_CLNT_HELLO_B
:
281 ret
=ssl3_client_hello(s
);
282 if (ret
<= 0) goto end
;
283 s
->state
=SSL3_ST_CR_SRVR_HELLO_A
;
286 /* turn on buffering for the next lot of output */
287 if (s
->bbio
!= s
->wbio
)
288 s
->wbio
=BIO_push(s
->bbio
,s
->wbio
);
292 case SSL3_ST_CR_SRVR_HELLO_A
:
293 case SSL3_ST_CR_SRVR_HELLO_B
:
294 ret
=ssl3_get_server_hello(s
);
295 if (ret
<= 0) goto end
;
299 s
->state
=SSL3_ST_CR_FINISHED_A
;
300 #ifndef OPENSSL_NO_TLSEXT
301 if (s
->tlsext_ticket_expected
)
303 /* receive renewed session ticket */
304 s
->state
=SSL3_ST_CR_SESSION_TICKET_A
;
310 #ifndef OPENSSL_NO_TLSEXT
311 /* The server hello indicated that
312 * an audit proof would follow. */
313 if (s
->s3
->tlsext_authz_server_promised
)
314 s
->state
=SSL3_ST_CR_SUPPLEMENTAL_DATA_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
;
338 if (s
->tlsext_ticket_expected
)
339 s
->state
=SSL3_ST_CR_SESSION_TICKET_A
;
341 s
->state
=SSL3_ST_CR_FINISHED_A
;
346 /* Check if it is anon DH/ECDH */
348 if (!(s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aNULL
) &&
349 !(s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kPSK
))
351 ret
=ssl3_get_server_certificate(s
);
352 if (ret
<= 0) goto end
;
353 #ifndef OPENSSL_NO_TLSEXT
354 if (s
->tlsext_status_expected
)
355 s
->state
=SSL3_ST_CR_CERT_STATUS_A
;
357 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
362 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
369 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
374 case SSL3_ST_CR_KEY_EXCH_A
:
375 case SSL3_ST_CR_KEY_EXCH_B
:
376 ret
=ssl3_get_key_exchange(s
);
377 if (ret
<= 0) goto end
;
378 s
->state
=SSL3_ST_CR_CERT_REQ_A
;
381 /* at this point we check that we have the
382 * required stuff from the server */
383 if (!ssl3_check_cert_and_algorithm(s
))
390 case SSL3_ST_CR_CERT_REQ_A
:
391 case SSL3_ST_CR_CERT_REQ_B
:
392 ret
=ssl3_get_certificate_request(s
);
393 if (ret
<= 0) goto end
;
394 s
->state
=SSL3_ST_CR_SRVR_DONE_A
;
398 case SSL3_ST_CR_SRVR_DONE_A
:
399 case SSL3_ST_CR_SRVR_DONE_B
:
400 ret
=ssl3_get_server_done(s
);
401 if (ret
<= 0) goto end
;
402 #ifndef OPENSSL_NO_SRP
403 if (s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kSRP
)
405 if ((ret
= SRP_Calc_A_param(s
))<=0)
407 SSLerr(SSL_F_SSL3_CONNECT
,SSL_R_SRP_A_CALC
);
408 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_INTERNAL_ERROR
);
413 if (s
->s3
->tmp
.cert_req
)
414 s
->state
=SSL3_ST_CW_CERT_A
;
416 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
421 case SSL3_ST_CW_CERT_A
:
422 case SSL3_ST_CW_CERT_B
:
423 case SSL3_ST_CW_CERT_C
:
424 case SSL3_ST_CW_CERT_D
:
425 ret
=ssl3_send_client_certificate(s
);
426 if (ret
<= 0) goto end
;
427 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
431 case SSL3_ST_CW_KEY_EXCH_A
:
432 case SSL3_ST_CW_KEY_EXCH_B
:
433 ret
=ssl3_send_client_key_exchange(s
);
434 if (ret
<= 0) goto end
;
435 /* EAY EAY EAY need to check for DH fix cert
437 /* For TLS, cert_req is set to 2, so a cert chain
438 * of nothing is sent, but no verify packet is sent */
439 /* XXX: For now, we do not support client
440 * authentication in ECDH cipher suites with
441 * ECDH (rather than ECDSA) certificates.
442 * We need to skip the certificate verify
443 * message when client's ECDH public key is sent
444 * inside the client certificate.
446 if (s
->s3
->tmp
.cert_req
== 1)
448 s
->state
=SSL3_ST_CW_CERT_VRFY_A
;
452 s
->state
=SSL3_ST_CW_CHANGE_A
;
453 s
->s3
->change_cipher_spec
=0;
455 if (s
->s3
->flags
& TLS1_FLAGS_SKIP_CERT_VERIFY
)
457 s
->state
=SSL3_ST_CW_CHANGE_A
;
458 s
->s3
->change_cipher_spec
=0;
464 case SSL3_ST_CW_CERT_VRFY_A
:
465 case SSL3_ST_CW_CERT_VRFY_B
:
466 ret
=ssl3_send_client_verify(s
);
467 if (ret
<= 0) goto end
;
468 s
->state
=SSL3_ST_CW_CHANGE_A
;
470 s
->s3
->change_cipher_spec
=0;
473 case SSL3_ST_CW_CHANGE_A
:
474 case SSL3_ST_CW_CHANGE_B
:
475 ret
=ssl3_send_change_cipher_spec(s
,
476 SSL3_ST_CW_CHANGE_A
,SSL3_ST_CW_CHANGE_B
);
477 if (ret
<= 0) goto end
;
479 #if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
480 s
->state
=SSL3_ST_CW_FINISHED_A
;
482 if (s
->s3
->next_proto_neg_seen
)
483 s
->state
=SSL3_ST_CW_NEXT_PROTO_A
;
485 s
->state
=SSL3_ST_CW_FINISHED_A
;
489 s
->session
->cipher
=s
->s3
->tmp
.new_cipher
;
490 #ifdef OPENSSL_NO_COMP
491 s
->session
->compress_meth
=0;
493 if (s
->s3
->tmp
.new_compression
== NULL
)
494 s
->session
->compress_meth
=0;
496 s
->session
->compress_meth
=
497 s
->s3
->tmp
.new_compression
->id
;
499 if (!s
->method
->ssl3_enc
->setup_key_block(s
))
505 if (!s
->method
->ssl3_enc
->change_cipher_state(s
,
506 SSL3_CHANGE_CIPHER_CLIENT_WRITE
))
514 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
515 case SSL3_ST_CW_NEXT_PROTO_A
:
516 case SSL3_ST_CW_NEXT_PROTO_B
:
517 ret
=ssl3_send_next_proto(s
);
518 if (ret
<= 0) goto end
;
519 s
->state
=SSL3_ST_CW_FINISHED_A
;
523 case SSL3_ST_CW_FINISHED_A
:
524 case SSL3_ST_CW_FINISHED_B
:
525 ret
=ssl3_send_finished(s
,
526 SSL3_ST_CW_FINISHED_A
,SSL3_ST_CW_FINISHED_B
,
527 s
->method
->ssl3_enc
->client_finished_label
,
528 s
->method
->ssl3_enc
->client_finished_label_len
);
529 if (ret
<= 0) goto end
;
530 s
->state
=SSL3_ST_CW_FLUSH
;
533 s
->s3
->flags
&= ~SSL3_FLAGS_POP_BUFFER
;
536 s
->s3
->tmp
.next_state
=SSL_ST_OK
;
537 if (s
->s3
->flags
& SSL3_FLAGS_DELAY_CLIENT_FINISHED
)
540 s
->s3
->flags
|=SSL3_FLAGS_POP_BUFFER
;
541 s
->s3
->delay_buf_pop_ret
=0;
546 #ifndef OPENSSL_NO_TLSEXT
547 /* Allow NewSessionTicket if ticket expected */
548 if (s
->tlsext_ticket_expected
)
549 s
->s3
->tmp
.next_state
=SSL3_ST_CR_SESSION_TICKET_A
;
553 s
->s3
->tmp
.next_state
=SSL3_ST_CR_FINISHED_A
;
558 #ifndef OPENSSL_NO_TLSEXT
559 case SSL3_ST_CR_SESSION_TICKET_A
:
560 case SSL3_ST_CR_SESSION_TICKET_B
:
561 ret
=ssl3_get_new_session_ticket(s
);
562 if (ret
<= 0) goto end
;
563 s
->state
=SSL3_ST_CR_FINISHED_A
;
567 case SSL3_ST_CR_CERT_STATUS_A
:
568 case SSL3_ST_CR_CERT_STATUS_B
:
569 ret
=ssl3_get_cert_status(s
);
570 if (ret
<= 0) goto end
;
571 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
576 case SSL3_ST_CR_FINISHED_A
:
577 case SSL3_ST_CR_FINISHED_B
:
579 ret
=ssl3_get_finished(s
,SSL3_ST_CR_FINISHED_A
,
580 SSL3_ST_CR_FINISHED_B
);
581 if (ret
<= 0) goto end
;
584 s
->state
=SSL3_ST_CW_CHANGE_A
;
590 case SSL3_ST_CW_FLUSH
:
591 s
->rwstate
=SSL_WRITING
;
592 if (BIO_flush(s
->wbio
) <= 0)
597 s
->rwstate
=SSL_NOTHING
;
598 s
->state
=s
->s3
->tmp
.next_state
;
602 /* clean a few things up */
603 ssl3_cleanup_key_block(s
);
605 if (s
->init_buf
!= NULL
)
607 BUF_MEM_free(s
->init_buf
);
611 /* If we are not 'joining' the last two packets,
612 * remove the buffering now */
613 if (!(s
->s3
->flags
& SSL3_FLAGS_POP_BUFFER
))
614 ssl_free_wbio_buffer(s
);
615 /* else do it later in ssl3_write */
621 ssl_update_cache(s
,SSL_SESS_CACHE_CLIENT
);
622 if (s
->hit
) s
->ctx
->stats
.sess_hit
++;
626 s
->handshake_func
=ssl3_connect
;
627 s
->ctx
->stats
.sess_connect_good
++;
629 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_DONE
,1);
635 SSLerr(SSL_F_SSL3_CONNECT
,SSL_R_UNKNOWN_STATE
);
641 /* did we do anything */
642 if (!s
->s3
->tmp
.reuse_message
&& !skip
)
646 if ((ret
=BIO_flush(s
->wbio
)) <= 0)
650 if ((cb
!= NULL
) && (s
->state
!= state
))
654 cb(s
,SSL_CB_CONNECT_LOOP
,1);
665 cb(s
,SSL_CB_CONNECT_EXIT
,ret
);
670 int ssl3_client_hello(SSL
*s
)
675 unsigned long Time
,l
;
676 #ifndef OPENSSL_NO_COMP
681 buf
=(unsigned char *)s
->init_buf
->data
;
682 if (s
->state
== SSL3_ST_CW_CLNT_HELLO_A
)
684 SSL_SESSION
*sess
= s
->session
;
685 if ((sess
== NULL
) ||
686 (sess
->ssl_version
!= s
->version
) ||
687 #ifdef OPENSSL_NO_TLSEXT
688 !sess
->session_id_length
||
690 (!sess
->session_id_length
&& !sess
->tlsext_tick
) ||
692 (sess
->not_resumable
))
694 if (!ssl_get_new_session(s
,0))
697 /* else use the pre-loaded session */
699 p
=s
->s3
->client_random
;
701 /* for DTLS if client_random is initialized, reuse it, we are
702 * required to use same upon reply to HelloVerify */
707 for (idx
=0; idx
< sizeof(s
->s3
->client_random
); idx
++)
721 Time
=(unsigned long)time(NULL
); /* Time */
723 RAND_pseudo_bytes(p
,sizeof(s
->s3
->client_random
)-4);
726 /* Do the message type and length last */
727 d
=p
= ssl_handshake_start(s
);
729 /* version indicates the negotiated version: for example from
730 * an SSLv2/v3 compatible client hello). The client_version
731 * field is the maximum version we permit and it is also
732 * used in RSA encrypted premaster secrets. Some servers can
733 * choke if we initially report a higher version then
734 * renegotiate to a lower one in the premaster secret. This
735 * didn't happen with TLS 1.0 as most servers supported it
736 * but it can with TLS 1.1 or later if the server only supports
739 * Possible scenario with previous logic:
740 * 1. Client hello indicates TLS 1.2
741 * 2. Server hello says TLS 1.0
742 * 3. RSA encrypted premaster secret uses 1.2.
743 * 4. Handhaked proceeds using TLS 1.0.
744 * 5. Server sends hello request to renegotiate.
745 * 6. Client hello indicates TLS v1.0 as we now
746 * know that is maximum server supports.
747 * 7. Server chokes on RSA encrypted premaster secret
748 * containing version 1.0.
750 * For interoperability it should be OK to always use the
751 * maximum version we support in client hello and then rely
752 * on the checking of version to ensure the servers isn't
753 * being inconsistent: for example initially negotiating with
754 * TLS 1.0 and renegotiating with TLS 1.2. We do this by using
755 * client_version in client hello and not resetting it to
756 * the negotiated version.
759 *(p
++)=s
->version
>>8;
760 *(p
++)=s
->version
&0xff;
761 s
->client_version
=s
->version
;
763 *(p
++)=s
->client_version
>>8;
764 *(p
++)=s
->client_version
&0xff;
768 memcpy(p
,s
->s3
->client_random
,SSL3_RANDOM_SIZE
);
775 i
=s
->session
->session_id_length
;
779 if (i
> (int)sizeof(s
->session
->session_id
))
781 SSLerr(SSL_F_SSL3_CLIENT_HELLO
, ERR_R_INTERNAL_ERROR
);
784 memcpy(p
,s
->session
->session_id
,i
);
788 /* cookie stuff for DTLS */
791 if ( s
->d1
->cookie_len
> sizeof(s
->d1
->cookie
))
793 SSLerr(SSL_F_SSL3_CLIENT_HELLO
, ERR_R_INTERNAL_ERROR
);
796 *(p
++) = s
->d1
->cookie_len
;
797 memcpy(p
, s
->d1
->cookie
, s
->d1
->cookie_len
);
798 p
+= s
->d1
->cookie_len
;
801 /* Ciphers supported */
802 i
=ssl_cipher_list_to_bytes(s
,SSL_get_ciphers(s
),&(p
[2]),0);
805 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,SSL_R_NO_CIPHERS_AVAILABLE
);
808 #ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
809 /* Some servers hang if client hello > 256 bytes
810 * as hack workaround chop number of supported ciphers
811 * to keep it well below this if we use TLS v1.2
813 if (TLS1_get_version(s
) >= TLS1_2_VERSION
814 && i
> OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
)
815 i
= OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
& ~1;
821 #ifdef OPENSSL_NO_COMP
825 if ((s
->options
& SSL_OP_NO_COMPRESSION
)
826 || !s
->ctx
->comp_methods
)
829 j
=sk_SSL_COMP_num(s
->ctx
->comp_methods
);
833 comp
=sk_SSL_COMP_value(s
->ctx
->comp_methods
,i
);
837 *(p
++)=0; /* Add the NULL method */
839 #ifndef OPENSSL_NO_TLSEXT
841 if (ssl_prepare_clienthello_tlsext(s
) <= 0)
843 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,SSL_R_CLIENTHELLO_TLSEXT
);
846 if ((p
= ssl_add_clienthello_tlsext(s
, p
, buf
+SSL3_RT_MAX_PLAIN_LENGTH
)) == NULL
)
848 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,ERR_R_INTERNAL_ERROR
);
854 ssl_set_handshake_header(s
, SSL3_MT_CLIENT_HELLO
, l
);
855 s
->state
=SSL3_ST_CW_CLNT_HELLO_B
;
858 /* SSL3_ST_CW_CLNT_HELLO_B */
859 return ssl_do_write(s
);
864 int ssl3_get_server_hello(SSL
*s
)
866 STACK_OF(SSL_CIPHER
) *sk
;
870 int i
,al
=SSL_AD_INTERNAL_ERROR
,ok
;
873 #ifndef OPENSSL_NO_COMP
877 n
=s
->method
->ssl_get_message(s
,
878 SSL3_ST_CR_SRVR_HELLO_A
,
879 SSL3_ST_CR_SRVR_HELLO_B
,
884 if (!ok
) return((int)n
);
886 if ( SSL_version(s
) == DTLS1_VERSION
|| SSL_version(s
) == DTLS1_BAD_VER
)
888 if ( s
->s3
->tmp
.message_type
== DTLS1_MT_HELLO_VERIFY_REQUEST
)
890 if ( s
->d1
->send_cookie
== 0)
892 s
->s3
->tmp
.reuse_message
= 1;
895 else /* already sent a cookie */
897 al
=SSL_AD_UNEXPECTED_MESSAGE
;
898 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_MESSAGE_TYPE
);
904 if ( s
->s3
->tmp
.message_type
!= SSL3_MT_SERVER_HELLO
)
906 al
=SSL_AD_UNEXPECTED_MESSAGE
;
907 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_MESSAGE_TYPE
);
911 d
=p
=(unsigned char *)s
->init_msg
;
913 if ((p
[0] != (s
->version
>>8)) || (p
[1] != (s
->version
&0xff)))
915 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_SSL_VERSION
);
916 s
->version
=(s
->version
&0xff00)|p
[1];
917 al
=SSL_AD_PROTOCOL_VERSION
;
922 /* load the server hello data */
923 /* load the server random */
924 memcpy(s
->s3
->server_random
,p
,SSL3_RANDOM_SIZE
);
927 /* get the session-id */
930 if ((j
> sizeof s
->session
->session_id
) || (j
> SSL3_SESSION_ID_SIZE
))
932 al
=SSL_AD_ILLEGAL_PARAMETER
;
933 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_SSL3_SESSION_ID_TOO_LONG
);
937 #ifndef OPENSSL_NO_TLSEXT
938 /* check if we want to resume the session based on external pre-shared secret */
939 if (s
->version
>= TLS1_VERSION
&& s
->tls_session_secret_cb
)
941 SSL_CIPHER
*pref_cipher
=NULL
;
942 s
->session
->master_key_length
=sizeof(s
->session
->master_key
);
943 if (s
->tls_session_secret_cb(s
, s
->session
->master_key
,
944 &s
->session
->master_key_length
,
946 s
->tls_session_secret_cb_arg
))
948 s
->session
->cipher
= pref_cipher
?
949 pref_cipher
: ssl_get_cipher_by_char(s
, p
+j
);
952 #endif /* OPENSSL_NO_TLSEXT */
954 if (j
!= 0 && j
== s
->session
->session_id_length
955 && memcmp(p
,s
->session
->session_id
,j
) == 0)
957 if(s
->sid_ctx_length
!= s
->session
->sid_ctx_length
958 || memcmp(s
->session
->sid_ctx
,s
->sid_ctx
,s
->sid_ctx_length
))
960 /* actually a client application bug */
961 al
=SSL_AD_ILLEGAL_PARAMETER
;
962 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT
);
967 else /* a miss or crap from the other end */
969 /* If we were trying for session-id reuse, make a new
970 * SSL_SESSION so we don't stuff up other people */
972 if (s
->session
->session_id_length
> 0)
974 if (!ssl_get_new_session(s
,0))
979 s
->session
->session_id_length
=j
;
980 memcpy(s
->session
->session_id
,p
,j
); /* j could be 0 */
983 c
=ssl_get_cipher_by_char(s
,p
);
987 al
=SSL_AD_ILLEGAL_PARAMETER
;
988 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNKNOWN_CIPHER_RETURNED
);
991 /* If it is a disabled cipher we didn't send it in client hello,
992 * so return an error.
994 if (c
->algorithm_ssl
& ct
->mask_ssl
||
995 c
->algorithm_mkey
& ct
->mask_k
||
996 c
->algorithm_auth
& ct
->mask_a
)
998 al
=SSL_AD_ILLEGAL_PARAMETER
;
999 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_CIPHER_RETURNED
);
1002 p
+=ssl_put_cipher_by_char(s
,NULL
,NULL
);
1004 sk
=ssl_get_ciphers_by_id(s
);
1005 i
=sk_SSL_CIPHER_find(sk
,c
);
1008 /* we did not say we would use this cipher */
1009 al
=SSL_AD_ILLEGAL_PARAMETER
;
1010 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_CIPHER_RETURNED
);
1014 /* Depending on the session caching (internal/external), the cipher
1015 and/or cipher_id values may not be set. Make sure that
1016 cipher_id is set and use it for comparison. */
1017 if (s
->session
->cipher
)
1018 s
->session
->cipher_id
= s
->session
->cipher
->id
;
1019 if (s
->hit
&& (s
->session
->cipher_id
!= c
->id
))
1021 /* Workaround is now obsolete */
1024 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
))
1027 al
=SSL_AD_ILLEGAL_PARAMETER
;
1028 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED
);
1032 s
->s3
->tmp
.new_cipher
=c
;
1033 /* Don't digest cached records if no sigalgs: we may need them for
1034 * client authentication.
1036 if (!SSL_USE_SIGALGS(s
) && !ssl3_digest_cached_records(s
))
1038 /* lets get the compression algorithm */
1040 #ifdef OPENSSL_NO_COMP
1043 al
=SSL_AD_ILLEGAL_PARAMETER
;
1044 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
1047 /* If compression is disabled we'd better not try to resume a session
1048 * using compression.
1050 if (s
->session
->compress_meth
!= 0)
1052 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_INCONSISTENT_COMPRESSION
);
1057 if (s
->hit
&& j
!= s
->session
->compress_meth
)
1059 al
=SSL_AD_ILLEGAL_PARAMETER
;
1060 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED
);
1065 else if (s
->options
& SSL_OP_NO_COMPRESSION
)
1067 al
=SSL_AD_ILLEGAL_PARAMETER
;
1068 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_COMPRESSION_DISABLED
);
1072 comp
=ssl3_comp_find(s
->ctx
->comp_methods
,j
);
1074 if ((j
!= 0) && (comp
== NULL
))
1076 al
=SSL_AD_ILLEGAL_PARAMETER
;
1077 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
1082 s
->s3
->tmp
.new_compression
=comp
;
1086 #ifndef OPENSSL_NO_TLSEXT
1088 if (!ssl_parse_serverhello_tlsext(s
,&p
,d
,n
))
1090 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_PARSE_TLSEXT
);
1097 /* wrong packet length */
1098 al
=SSL_AD_DECODE_ERROR
;
1099 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_PACKET_LENGTH
);
1105 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1110 int ssl3_get_server_certificate(SSL
*s
)
1112 int al
,i
,ok
,ret
= -1;
1113 unsigned long n
,nc
,llen
,l
;
1115 const unsigned char *q
,*p
;
1117 STACK_OF(X509
) *sk
=NULL
;
1119 EVP_PKEY
*pkey
=NULL
;
1120 int need_cert
= 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1122 n
=s
->method
->ssl_get_message(s
,
1129 if (!ok
) return((int)n
);
1131 if ((s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_KEY_EXCHANGE
) ||
1132 ((s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aKRB5
) &&
1133 (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_DONE
)))
1135 s
->s3
->tmp
.reuse_message
=1;
1139 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE
)
1141 al
=SSL_AD_UNEXPECTED_MESSAGE
;
1142 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_BAD_MESSAGE_TYPE
);
1145 p
=d
=(unsigned char *)s
->init_msg
;
1147 if ((sk
=sk_X509_new_null()) == NULL
)
1149 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
1156 al
=SSL_AD_DECODE_ERROR
;
1157 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_LENGTH_MISMATCH
);
1160 for (nc
=0; nc
<llen
; )
1163 if ((l
+nc
+3) > llen
)
1165 al
=SSL_AD_DECODE_ERROR
;
1166 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
1171 x
=d2i_X509(NULL
,&q
,l
);
1174 al
=SSL_AD_BAD_CERTIFICATE
;
1175 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_ASN1_LIB
);
1180 al
=SSL_AD_DECODE_ERROR
;
1181 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
1184 if (!sk_X509_push(sk
,x
))
1186 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
1194 i
=ssl_verify_cert_chain(s
,sk
);
1195 if ((s
->verify_mode
!= SSL_VERIFY_NONE
) && (i
<= 0)
1196 #ifndef OPENSSL_NO_KRB5
1197 && !((s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kKRB5
) &&
1198 (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aKRB5
))
1199 #endif /* OPENSSL_NO_KRB5 */
1202 al
=ssl_verify_alarm_type(s
->verify_result
);
1203 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERTIFICATE_VERIFY_FAILED
);
1206 ERR_clear_error(); /* but we keep s->verify_result */
1208 sc
=ssl_sess_cert_new();
1209 if (sc
== NULL
) goto err
;
1211 if (s
->session
->sess_cert
) ssl_sess_cert_free(s
->session
->sess_cert
);
1212 s
->session
->sess_cert
=sc
;
1215 /* Inconsistency alert: cert_chain does include the peer's
1216 * certificate, which we don't include in s3_srvr.c */
1217 x
=sk_X509_value(sk
,0);
1219 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1221 pkey
=X509_get_pubkey(x
);
1223 /* VRS: allow null cert if auth == KRB5 */
1224 need_cert
= ((s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kKRB5
) &&
1225 (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aKRB5
))
1229 printf("pkey,x = %p, %p\n", pkey
,x
);
1230 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x
,pkey
));
1231 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s
->s3
->tmp
.new_cipher
->name
,
1232 s
->s3
->tmp
.new_cipher
->algorithm_mkey
, s
->s3
->tmp
.new_cipher
->algorithm_auth
, need_cert
);
1233 #endif /* KSSL_DEBUG */
1235 if (need_cert
&& ((pkey
== NULL
) || EVP_PKEY_missing_parameters(pkey
)))
1239 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
1240 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS
);
1244 i
=ssl_cert_type(x
,pkey
);
1245 if (need_cert
&& i
< 0)
1249 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
1250 SSL_R_UNKNOWN_CERTIFICATE_TYPE
);
1256 int exp_idx
= ssl_cipher_get_cert_index(s
->s3
->tmp
.new_cipher
);
1257 if (exp_idx
>= 0 && i
!= exp_idx
)
1260 al
=SSL_AD_ILLEGAL_PARAMETER
;
1261 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
1262 SSL_R_WRONG_CERTIFICATE_TYPE
);
1265 sc
->peer_cert_type
=i
;
1266 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
1267 /* Why would the following ever happen?
1268 * We just created sc a couple of lines ago. */
1269 if (sc
->peer_pkeys
[i
].x509
!= NULL
)
1270 X509_free(sc
->peer_pkeys
[i
].x509
);
1271 sc
->peer_pkeys
[i
].x509
=x
;
1272 sc
->peer_key
= &(sc
->peer_pkeys
[i
]);
1274 if (s
->session
->peer
!= NULL
)
1275 X509_free(s
->session
->peer
);
1276 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
1281 sc
->peer_cert_type
=i
;
1284 if (s
->session
->peer
!= NULL
)
1285 X509_free(s
->session
->peer
);
1286 s
->session
->peer
=NULL
;
1288 s
->session
->verify_result
= s
->verify_result
;
1291 #ifndef OPENSSL_NO_TLSEXT
1292 /* Check the audit proof. */
1293 if (s
->ctx
->tlsext_authz_server_audit_proof_cb
)
1295 ret
= s
->ctx
->tlsext_authz_server_audit_proof_cb(s
,
1296 s
->ctx
->tlsext_authz_server_audit_proof_cb_arg
);
1299 al
= SSL_AD_BAD_CERTIFICATE
;
1300 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_INVALID_AUDIT_PROOF
);
1310 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1313 EVP_PKEY_free(pkey
);
1315 sk_X509_pop_free(sk
,X509_free
);
1319 int ssl3_get_key_exchange(SSL
*s
)
1321 #ifndef OPENSSL_NO_RSA
1322 unsigned char *q
,md_buf
[EVP_MAX_MD_SIZE
*2];
1325 unsigned char *param
,*p
;
1326 int al
,i
,j
,param_len
,ok
;
1328 EVP_PKEY
*pkey
=NULL
;
1329 const EVP_MD
*md
= NULL
;
1330 #ifndef OPENSSL_NO_RSA
1333 #ifndef OPENSSL_NO_DH
1336 #ifndef OPENSSL_NO_ECDH
1337 EC_KEY
*ecdh
= NULL
;
1338 BN_CTX
*bn_ctx
= NULL
;
1339 EC_POINT
*srvr_ecpoint
= NULL
;
1341 int encoded_pt_len
= 0;
1344 /* use same message size as in ssl3_get_certificate_request()
1345 * as ServerKeyExchange message may be skipped */
1346 n
=s
->method
->ssl_get_message(s
,
1347 SSL3_ST_CR_KEY_EXCH_A
,
1348 SSL3_ST_CR_KEY_EXCH_B
,
1352 if (!ok
) return((int)n
);
1354 if (s
->s3
->tmp
.message_type
!= SSL3_MT_SERVER_KEY_EXCHANGE
)
1356 #ifndef OPENSSL_NO_PSK
1357 /* In plain PSK ciphersuite, ServerKeyExchange can be
1358 omitted if no identity hint is sent. Set
1359 session->sess_cert anyway to avoid problems
1361 if (s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kPSK
)
1363 s
->session
->sess_cert
=ssl_sess_cert_new();
1364 if (s
->ctx
->psk_identity_hint
)
1365 OPENSSL_free(s
->ctx
->psk_identity_hint
);
1366 s
->ctx
->psk_identity_hint
= NULL
;
1369 s
->s3
->tmp
.reuse_message
=1;
1373 param
=p
=(unsigned char *)s
->init_msg
;
1374 if (s
->session
->sess_cert
!= NULL
)
1376 #ifndef OPENSSL_NO_RSA
1377 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
1379 RSA_free(s
->session
->sess_cert
->peer_rsa_tmp
);
1380 s
->session
->sess_cert
->peer_rsa_tmp
=NULL
;
1383 #ifndef OPENSSL_NO_DH
1384 if (s
->session
->sess_cert
->peer_dh_tmp
)
1386 DH_free(s
->session
->sess_cert
->peer_dh_tmp
);
1387 s
->session
->sess_cert
->peer_dh_tmp
=NULL
;
1390 #ifndef OPENSSL_NO_ECDH
1391 if (s
->session
->sess_cert
->peer_ecdh_tmp
)
1393 EC_KEY_free(s
->session
->sess_cert
->peer_ecdh_tmp
);
1394 s
->session
->sess_cert
->peer_ecdh_tmp
=NULL
;
1400 s
->session
->sess_cert
=ssl_sess_cert_new();
1404 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
1405 alg_a
=s
->s3
->tmp
.new_cipher
->algorithm_auth
;
1406 EVP_MD_CTX_init(&md_ctx
);
1408 #ifndef OPENSSL_NO_PSK
1409 if (alg_k
& SSL_kPSK
)
1411 char tmp_id_hint
[PSK_MAX_IDENTITY_LEN
+1];
1413 al
=SSL_AD_HANDSHAKE_FAILURE
;
1416 /* Store PSK identity hint for later use, hint is used
1417 * in ssl3_send_client_key_exchange. Assume that the
1418 * maximum length of a PSK identity hint can be as
1419 * long as the maximum length of a PSK identity. */
1420 if (i
> PSK_MAX_IDENTITY_LEN
)
1422 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1423 SSL_R_DATA_LENGTH_TOO_LONG
);
1428 al
=SSL_AD_DECODE_ERROR
;
1429 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1430 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH
);
1433 /* If received PSK identity hint contains NULL
1434 * characters, the hint is truncated from the first
1435 * NULL. p may not be ending with NULL, so create a
1436 * NULL-terminated string. */
1437 memcpy(tmp_id_hint
, p
, i
);
1438 memset(tmp_id_hint
+i
, 0, PSK_MAX_IDENTITY_LEN
+1-i
);
1439 if (s
->ctx
->psk_identity_hint
!= NULL
)
1440 OPENSSL_free(s
->ctx
->psk_identity_hint
);
1441 s
->ctx
->psk_identity_hint
= BUF_strdup(tmp_id_hint
);
1442 if (s
->ctx
->psk_identity_hint
== NULL
)
1444 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
, ERR_R_MALLOC_FAILURE
);
1452 #endif /* !OPENSSL_NO_PSK */
1453 #ifndef OPENSSL_NO_SRP
1454 if (alg_k
& SSL_kSRP
)
1460 al
=SSL_AD_DECODE_ERROR
;
1461 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_N_LENGTH
);
1464 if (!(s
->srp_ctx
.N
=BN_bin2bn(p
,i
,NULL
)))
1466 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1475 al
=SSL_AD_DECODE_ERROR
;
1476 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_G_LENGTH
);
1479 if (!(s
->srp_ctx
.g
=BN_bin2bn(p
,i
,NULL
)))
1481 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1486 i
= (unsigned int)(p
[0]);
1491 al
=SSL_AD_DECODE_ERROR
;
1492 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_S_LENGTH
);
1495 if (!(s
->srp_ctx
.s
=BN_bin2bn(p
,i
,NULL
)))
1497 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1506 al
=SSL_AD_DECODE_ERROR
;
1507 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_B_LENGTH
);
1510 if (!(s
->srp_ctx
.B
=BN_bin2bn(p
,i
,NULL
)))
1512 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1518 /* We must check if there is a certificate */
1519 #ifndef OPENSSL_NO_RSA
1520 if (alg_a
& SSL_aRSA
)
1521 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1526 #ifndef OPENSSL_NO_DSA
1527 else if (alg_a
& SSL_aDSS
)
1528 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_DSA_SIGN
].x509
);
1532 #endif /* !OPENSSL_NO_SRP */
1533 #ifndef OPENSSL_NO_RSA
1534 if (alg_k
& SSL_kRSA
)
1536 if ((rsa
=RSA_new()) == NULL
)
1538 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1545 al
=SSL_AD_DECODE_ERROR
;
1546 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_MODULUS_LENGTH
);
1549 if (!(rsa
->n
=BN_bin2bn(p
,i
,rsa
->n
)))
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_RSA_E_LENGTH
);
1564 if (!(rsa
->e
=BN_bin2bn(p
,i
,rsa
->e
)))
1566 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1572 /* this should be because we are using an export cipher */
1573 if (alg_a
& SSL_aRSA
)
1574 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1577 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1580 s
->session
->sess_cert
->peer_rsa_tmp
=rsa
;
1583 #else /* OPENSSL_NO_RSA */
1587 #ifndef OPENSSL_NO_DH
1588 else if (alg_k
& SSL_kEDH
)
1590 if ((dh
=DH_new()) == NULL
)
1592 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1599 al
=SSL_AD_DECODE_ERROR
;
1600 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_P_LENGTH
);
1603 if (!(dh
->p
=BN_bin2bn(p
,i
,NULL
)))
1605 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1614 al
=SSL_AD_DECODE_ERROR
;
1615 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_G_LENGTH
);
1618 if (!(dh
->g
=BN_bin2bn(p
,i
,NULL
)))
1620 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1629 al
=SSL_AD_DECODE_ERROR
;
1630 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_PUB_KEY_LENGTH
);
1633 if (!(dh
->pub_key
=BN_bin2bn(p
,i
,NULL
)))
1635 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1641 #ifndef OPENSSL_NO_RSA
1642 if (alg_a
& SSL_aRSA
)
1643 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1648 #ifndef OPENSSL_NO_DSA
1649 else if (alg_a
& SSL_aDSS
)
1650 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_DSA_SIGN
].x509
);
1652 /* else anonymous DH, so no certificate or pkey. */
1654 s
->session
->sess_cert
->peer_dh_tmp
=dh
;
1657 else if ((alg_k
& SSL_kDHr
) || (alg_k
& SSL_kDHd
))
1659 al
=SSL_AD_ILLEGAL_PARAMETER
;
1660 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER
);
1663 #endif /* !OPENSSL_NO_DH */
1665 #ifndef OPENSSL_NO_ECDH
1666 else if (alg_k
& SSL_kEECDH
)
1669 const EC_GROUP
*group
;
1671 if ((ecdh
=EC_KEY_new()) == NULL
)
1673 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1677 /* Extract elliptic curve parameters and the
1678 * server's ephemeral ECDH public key.
1679 * Keep accumulating lengths of various components in
1680 * param_len and make sure it never exceeds n.
1683 /* XXX: For now we only support named (not generic) curves
1684 * and the ECParameters in this case is just three bytes.
1687 /* Check curve is one of our prefrences, if not server has
1688 * sent an invalid curve.
1690 if (!tls1_check_curve(s
, p
, param_len
))
1692 al
=SSL_AD_DECODE_ERROR
;
1693 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_WRONG_CURVE
);
1697 if ((curve_nid
= tls1_ec_curve_id2nid(*(p
+ 2))) == 0)
1699 al
=SSL_AD_INTERNAL_ERROR
;
1700 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS
);
1704 ngroup
= EC_GROUP_new_by_curve_name(curve_nid
);
1707 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_EC_LIB
);
1710 if (EC_KEY_set_group(ecdh
, ngroup
) == 0)
1712 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_EC_LIB
);
1715 EC_GROUP_free(ngroup
);
1717 group
= EC_KEY_get0_group(ecdh
);
1719 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) &&
1720 (EC_GROUP_get_degree(group
) > 163))
1722 al
=SSL_AD_EXPORT_RESTRICTION
;
1723 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER
);
1729 /* Next, get the encoded ECPoint */
1730 if (((srvr_ecpoint
= EC_POINT_new(group
)) == NULL
) ||
1731 ((bn_ctx
= BN_CTX_new()) == NULL
))
1733 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1737 encoded_pt_len
= *p
; /* length of encoded point */
1739 param_len
+= (1 + encoded_pt_len
);
1740 if ((param_len
> n
) ||
1741 (EC_POINT_oct2point(group
, srvr_ecpoint
,
1742 p
, encoded_pt_len
, bn_ctx
) == 0))
1744 al
=SSL_AD_DECODE_ERROR
;
1745 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_ECPOINT
);
1752 /* The ECC/TLS specification does not mention
1753 * the use of DSA to sign ECParameters in the server
1754 * key exchange message. We do support RSA and ECDSA.
1757 #ifndef OPENSSL_NO_RSA
1758 else if (alg_a
& SSL_aRSA
)
1759 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1761 #ifndef OPENSSL_NO_ECDSA
1762 else if (alg_a
& SSL_aECDSA
)
1763 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_ECC
].x509
);
1765 /* else anonymous ECDH, so no certificate or pkey. */
1766 EC_KEY_set_public_key(ecdh
, srvr_ecpoint
);
1767 s
->session
->sess_cert
->peer_ecdh_tmp
=ecdh
;
1769 BN_CTX_free(bn_ctx
);
1771 EC_POINT_free(srvr_ecpoint
);
1772 srvr_ecpoint
= NULL
;
1776 al
=SSL_AD_UNEXPECTED_MESSAGE
;
1777 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNEXPECTED_MESSAGE
);
1780 #endif /* !OPENSSL_NO_ECDH */
1783 /* p points to the next byte, there are 'n' bytes left */
1785 /* if it was signed, check the signature */
1788 if (SSL_USE_SIGALGS(s
))
1790 int rv
= tls12_check_peer_sigalg(&md
, s
, p
, pkey
);
1795 al
= SSL_AD_DECODE_ERROR
;
1799 fprintf(stderr
, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md
));
1809 j
=EVP_PKEY_size(pkey
);
1811 if ((i
!= n
) || (n
> j
) || (n
<= 0))
1813 /* wrong packet length */
1814 al
=SSL_AD_DECODE_ERROR
;
1815 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_WRONG_SIGNATURE_LENGTH
);
1819 #ifndef OPENSSL_NO_RSA
1820 if (pkey
->type
== EVP_PKEY_RSA
&& !SSL_USE_SIGALGS(s
))
1826 for (num
=2; num
> 0; num
--)
1828 EVP_MD_CTX_set_flags(&md_ctx
,
1829 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW
);
1830 EVP_DigestInit_ex(&md_ctx
,(num
== 2)
1831 ?s
->ctx
->md5
:s
->ctx
->sha1
, NULL
);
1832 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1833 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1834 EVP_DigestUpdate(&md_ctx
,param
,param_len
);
1835 EVP_DigestFinal_ex(&md_ctx
,q
,(unsigned int *)&i
);
1839 i
=RSA_verify(NID_md5_sha1
, md_buf
, j
, p
, n
,
1843 al
=SSL_AD_DECRYPT_ERROR
;
1844 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_DECRYPT
);
1850 al
=SSL_AD_DECRYPT_ERROR
;
1851 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1858 EVP_VerifyInit_ex(&md_ctx
, md
, NULL
);
1859 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1860 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1861 EVP_VerifyUpdate(&md_ctx
,param
,param_len
);
1862 if (EVP_VerifyFinal(&md_ctx
,p
,(int)n
,pkey
) <= 0)
1865 al
=SSL_AD_DECRYPT_ERROR
;
1866 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1873 /* aNULL or kPSK do not need public keys */
1874 if (!(alg_a
& SSL_aNULL
) && !(alg_k
& SSL_kPSK
))
1876 /* Might be wrong key type, check it */
1877 if (ssl3_check_cert_and_algorithm(s
))
1878 /* Otherwise this shouldn't happen */
1879 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1882 /* still data left over */
1885 al
=SSL_AD_DECODE_ERROR
;
1886 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_EXTRA_DATA_IN_MESSAGE
);
1890 EVP_PKEY_free(pkey
);
1891 EVP_MD_CTX_cleanup(&md_ctx
);
1894 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1896 EVP_PKEY_free(pkey
);
1897 #ifndef OPENSSL_NO_RSA
1901 #ifndef OPENSSL_NO_DH
1905 #ifndef OPENSSL_NO_ECDH
1906 BN_CTX_free(bn_ctx
);
1907 EC_POINT_free(srvr_ecpoint
);
1911 EVP_MD_CTX_cleanup(&md_ctx
);
1915 int ssl3_get_certificate_request(SSL
*s
)
1918 unsigned long n
,nc
,l
;
1919 unsigned int llen
, ctype_num
,i
;
1921 const unsigned char *p
,*q
;
1923 STACK_OF(X509_NAME
) *ca_sk
=NULL
;
1925 n
=s
->method
->ssl_get_message(s
,
1926 SSL3_ST_CR_CERT_REQ_A
,
1927 SSL3_ST_CR_CERT_REQ_B
,
1932 if (!ok
) return((int)n
);
1934 s
->s3
->tmp
.cert_req
=0;
1936 if (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_DONE
)
1938 s
->s3
->tmp
.reuse_message
=1;
1939 /* If we get here we don't need any cached handshake records
1940 * as we wont be doing client auth.
1942 if (s
->s3
->handshake_buffer
)
1944 if (!ssl3_digest_cached_records(s
))
1950 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE_REQUEST
)
1952 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
1953 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_WRONG_MESSAGE_TYPE
);
1957 /* TLS does not like anon-DH with client cert */
1958 if (s
->version
> SSL3_VERSION
)
1960 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aNULL
)
1962 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
1963 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER
);
1968 p
=d
=(unsigned char *)s
->init_msg
;
1970 if ((ca_sk
=sk_X509_NAME_new(ca_dn_cmp
)) == NULL
)
1972 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
1976 /* get the certificate types */
1978 if (s
->cert
->ctypes
)
1980 OPENSSL_free(s
->cert
->ctypes
);
1981 s
->cert
->ctypes
= NULL
;
1983 if (ctype_num
> SSL3_CT_NUMBER
)
1985 /* If we exceed static buffer copy all to cert structure */
1986 s
->cert
->ctypes
= OPENSSL_malloc(ctype_num
);
1987 memcpy(s
->cert
->ctypes
, p
, ctype_num
);
1988 s
->cert
->ctype_num
= (size_t)ctype_num
;
1989 ctype_num
=SSL3_CT_NUMBER
;
1991 for (i
=0; i
<ctype_num
; i
++)
1992 s
->s3
->tmp
.ctype
[i
]= p
[i
];
1994 if (SSL_USE_SIGALGS(s
))
1997 /* Check we have enough room for signature algorithms and
1998 * following length value.
2000 if ((unsigned long)(p
- d
+ llen
+ 2) > n
)
2002 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2003 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_DATA_LENGTH_TOO_LONG
);
2006 /* Clear certificate digests and validity flags */
2007 for (i
= 0; i
< SSL_PKEY_NUM
; i
++)
2009 s
->cert
->pkeys
[i
].digest
= NULL
;
2010 s
->cert
->pkeys
[i
].valid_flags
= 0;
2012 if ((llen
& 1) || !tls1_process_sigalgs(s
, p
, llen
))
2014 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2015 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_SIGNATURE_ALGORITHMS_ERROR
);
2021 /* get the CA RDNs */
2026 out
=fopen("/tmp/vsign.der","w");
2027 fwrite(p
,1,llen
,out
);
2032 if ((unsigned long)(p
- d
+ llen
) != n
)
2034 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2035 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_LENGTH_MISMATCH
);
2039 for (nc
=0; nc
<llen
; )
2042 if ((l
+nc
+2) > llen
)
2044 if ((s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
))
2045 goto cont
; /* netscape bugs */
2046 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2047 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_TOO_LONG
);
2053 if ((xn
=d2i_X509_NAME(NULL
,&q
,l
)) == NULL
)
2055 /* If netscape tolerance is on, ignore errors */
2056 if (s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
)
2060 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2061 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_ASN1_LIB
);
2068 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2069 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_LENGTH_MISMATCH
);
2072 if (!sk_X509_NAME_push(ca_sk
,xn
))
2074 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
2088 /* we should setup a certificate to return.... */
2089 s
->s3
->tmp
.cert_req
=1;
2090 s
->s3
->tmp
.ctype_num
=ctype_num
;
2091 if (s
->s3
->tmp
.ca_names
!= NULL
)
2092 sk_X509_NAME_pop_free(s
->s3
->tmp
.ca_names
,X509_NAME_free
);
2093 s
->s3
->tmp
.ca_names
=ca_sk
;
2098 if (ca_sk
!= NULL
) sk_X509_NAME_pop_free(ca_sk
,X509_NAME_free
);
2102 static int ca_dn_cmp(const X509_NAME
* const *a
, const X509_NAME
* const *b
)
2104 return(X509_NAME_cmp(*a
,*b
));
2106 #ifndef OPENSSL_NO_TLSEXT
2107 int ssl3_get_new_session_ticket(SSL
*s
)
2109 int ok
,al
,ret
=0, ticklen
;
2111 const unsigned char *p
;
2114 n
=s
->method
->ssl_get_message(s
,
2115 SSL3_ST_CR_SESSION_TICKET_A
,
2116 SSL3_ST_CR_SESSION_TICKET_B
,
2124 if (s
->s3
->tmp
.message_type
== SSL3_MT_FINISHED
)
2126 s
->s3
->tmp
.reuse_message
=1;
2129 if (s
->s3
->tmp
.message_type
!= SSL3_MT_NEWSESSION_TICKET
)
2131 al
=SSL_AD_UNEXPECTED_MESSAGE
;
2132 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_BAD_MESSAGE_TYPE
);
2137 /* need at least ticket_lifetime_hint + ticket length */
2138 al
= SSL_AD_DECODE_ERROR
;
2139 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_LENGTH_MISMATCH
);
2143 p
=d
=(unsigned char *)s
->init_msg
;
2144 n2l(p
, s
->session
->tlsext_tick_lifetime_hint
);
2146 /* ticket_lifetime_hint + ticket_length + ticket */
2147 if (ticklen
+ 6 != n
)
2149 al
= SSL_AD_DECODE_ERROR
;
2150 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_LENGTH_MISMATCH
);
2153 if (s
->session
->tlsext_tick
)
2155 OPENSSL_free(s
->session
->tlsext_tick
);
2156 s
->session
->tlsext_ticklen
= 0;
2158 s
->session
->tlsext_tick
= OPENSSL_malloc(ticklen
);
2159 if (!s
->session
->tlsext_tick
)
2161 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,ERR_R_MALLOC_FAILURE
);
2164 memcpy(s
->session
->tlsext_tick
, p
, ticklen
);
2165 s
->session
->tlsext_ticklen
= ticklen
;
2166 /* There are two ways to detect a resumed ticket sesion.
2167 * One is to set an appropriate session ID and then the server
2168 * must return a match in ServerHello. This allows the normal
2169 * client session ID matching to work and we know much
2170 * earlier that the ticket has been accepted.
2172 * The other way is to set zero length session ID when the
2173 * ticket is presented and rely on the handshake to determine
2174 * session resumption.
2176 * We choose the former approach because this fits in with
2177 * assumptions elsewhere in OpenSSL. The session ID is set
2178 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2181 EVP_Digest(p
, ticklen
,
2182 s
->session
->session_id
, &s
->session
->session_id_length
,
2183 #ifndef OPENSSL_NO_SHA256
2184 EVP_sha256(), NULL
);
2191 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
2196 int ssl3_get_cert_status(SSL
*s
)
2199 unsigned long resplen
,n
;
2200 const unsigned char *p
;
2202 n
=s
->method
->ssl_get_message(s
,
2203 SSL3_ST_CR_CERT_STATUS_A
,
2204 SSL3_ST_CR_CERT_STATUS_B
,
2205 SSL3_MT_CERTIFICATE_STATUS
,
2209 if (!ok
) return((int)n
);
2212 /* need at least status type + length */
2213 al
= SSL_AD_DECODE_ERROR
;
2214 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_LENGTH_MISMATCH
);
2217 p
= (unsigned char *)s
->init_msg
;
2218 if (*p
++ != TLSEXT_STATUSTYPE_ocsp
)
2220 al
= SSL_AD_DECODE_ERROR
;
2221 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_UNSUPPORTED_STATUS_TYPE
);
2225 if (resplen
+ 4 != n
)
2227 al
= SSL_AD_DECODE_ERROR
;
2228 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_LENGTH_MISMATCH
);
2231 if (s
->tlsext_ocsp_resp
)
2232 OPENSSL_free(s
->tlsext_ocsp_resp
);
2233 s
->tlsext_ocsp_resp
= BUF_memdup(p
, resplen
);
2234 if (!s
->tlsext_ocsp_resp
)
2236 al
= SSL_AD_INTERNAL_ERROR
;
2237 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,ERR_R_MALLOC_FAILURE
);
2240 s
->tlsext_ocsp_resplen
= resplen
;
2241 if (s
->ctx
->tlsext_status_cb
)
2244 ret
= s
->ctx
->tlsext_status_cb(s
, s
->ctx
->tlsext_status_arg
);
2247 al
= SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE
;
2248 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_INVALID_STATUS_RESPONSE
);
2253 al
= SSL_AD_INTERNAL_ERROR
;
2254 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,ERR_R_MALLOC_FAILURE
);
2260 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
2265 int ssl3_get_server_done(SSL
*s
)
2270 n
=s
->method
->ssl_get_message(s
,
2271 SSL3_ST_CR_SRVR_DONE_A
,
2272 SSL3_ST_CR_SRVR_DONE_B
,
2273 SSL3_MT_SERVER_DONE
,
2274 30, /* should be very small, like 0 :-) */
2277 if (!ok
) return((int)n
);
2280 /* should contain no data */
2281 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2282 SSLerr(SSL_F_SSL3_GET_SERVER_DONE
,SSL_R_LENGTH_MISMATCH
);
2290 int ssl3_send_client_key_exchange(SSL
*s
)
2294 unsigned long alg_k
;
2295 #ifndef OPENSSL_NO_RSA
2297 EVP_PKEY
*pkey
=NULL
;
2299 #ifndef OPENSSL_NO_KRB5
2301 #endif /* OPENSSL_NO_KRB5 */
2302 #ifndef OPENSSL_NO_ECDH
2303 EC_KEY
*clnt_ecdh
= NULL
;
2304 const EC_POINT
*srvr_ecpoint
= NULL
;
2305 EVP_PKEY
*srvr_pub_pkey
= NULL
;
2306 unsigned char *encodedPoint
= NULL
;
2307 int encoded_pt_len
= 0;
2308 BN_CTX
* bn_ctx
= NULL
;
2311 if (s
->state
== SSL3_ST_CW_KEY_EXCH_A
)
2313 p
= ssl_handshake_start(s
);
2315 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
2317 /* Fool emacs indentation */
2319 #ifndef OPENSSL_NO_RSA
2320 else if (alg_k
& SSL_kRSA
)
2323 unsigned char tmp_buf
[SSL_MAX_MASTER_KEY_LENGTH
];
2325 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
2326 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
2329 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
2330 if ((pkey
== NULL
) ||
2331 (pkey
->type
!= EVP_PKEY_RSA
) ||
2332 (pkey
->pkey
.rsa
== NULL
))
2334 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
2338 EVP_PKEY_free(pkey
);
2341 tmp_buf
[0]=s
->client_version
>>8;
2342 tmp_buf
[1]=s
->client_version
&0xff;
2343 if (RAND_bytes(&(tmp_buf
[2]),sizeof tmp_buf
-2) <= 0)
2346 s
->session
->master_key_length
=sizeof tmp_buf
;
2349 /* Fix buf for TLS and beyond */
2350 if (s
->version
> SSL3_VERSION
)
2352 n
=RSA_public_encrypt(sizeof tmp_buf
,
2353 tmp_buf
,p
,rsa
,RSA_PKCS1_PADDING
);
2355 if (s
->options
& SSL_OP_PKCS1_CHECK_1
) p
[1]++;
2356 if (s
->options
& SSL_OP_PKCS1_CHECK_2
) tmp_buf
[0]=0x70;
2360 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_BAD_RSA_ENCRYPT
);
2364 /* Fix buf for TLS and beyond */
2365 if (s
->version
> SSL3_VERSION
)
2371 s
->session
->master_key_length
=
2372 s
->method
->ssl3_enc
->generate_master_secret(s
,
2373 s
->session
->master_key
,
2374 tmp_buf
,sizeof tmp_buf
);
2375 OPENSSL_cleanse(tmp_buf
,sizeof tmp_buf
);
2378 #ifndef OPENSSL_NO_KRB5
2379 else if (alg_k
& SSL_kKRB5
)
2381 krb5_error_code krb5rc
;
2382 KSSL_CTX
*kssl_ctx
= s
->kssl_ctx
;
2383 /* krb5_data krb5_ap_req; */
2384 krb5_data
*enc_ticket
;
2385 krb5_data authenticator
, *authp
= NULL
;
2386 EVP_CIPHER_CTX ciph_ctx
;
2387 const EVP_CIPHER
*enc
= NULL
;
2388 unsigned char iv
[EVP_MAX_IV_LENGTH
];
2389 unsigned char tmp_buf
[SSL_MAX_MASTER_KEY_LENGTH
];
2390 unsigned char epms
[SSL_MAX_MASTER_KEY_LENGTH
2391 + EVP_MAX_IV_LENGTH
];
2392 int padl
, outl
= sizeof(epms
);
2394 EVP_CIPHER_CTX_init(&ciph_ctx
);
2397 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2399 #endif /* KSSL_DEBUG */
2403 if (KRB5SENDAUTH
) authp
= &authenticator
;
2404 #endif /* KRB5SENDAUTH */
2406 krb5rc
= kssl_cget_tkt(kssl_ctx
, &enc_ticket
, authp
,
2408 enc
= kssl_map_enc(kssl_ctx
->enctype
);
2413 printf("kssl_cget_tkt rtn %d\n", krb5rc
);
2414 if (krb5rc
&& kssl_err
.text
)
2415 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err
.text
);
2417 #endif /* KSSL_DEBUG */
2421 ssl3_send_alert(s
,SSL3_AL_FATAL
,
2422 SSL_AD_HANDSHAKE_FAILURE
);
2423 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2428 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2429 ** in place of RFC 2712 KerberosWrapper, as in:
2431 ** Send ticket (copy to *p, set n = length)
2432 ** n = krb5_ap_req.length;
2433 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2434 ** if (krb5_ap_req.data)
2435 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2437 ** Now using real RFC 2712 KerberosWrapper
2438 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2439 ** Note: 2712 "opaque" types are here replaced
2440 ** with a 2-byte length followed by the value.
2442 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2443 ** Where "xx xx" = length bytes. Shown here with
2444 ** optional authenticator omitted.
2447 /* KerberosWrapper.Ticket */
2448 s2n(enc_ticket
->length
,p
);
2449 memcpy(p
, enc_ticket
->data
, enc_ticket
->length
);
2450 p
+= enc_ticket
->length
;
2451 n
= enc_ticket
->length
+ 2;
2453 /* KerberosWrapper.Authenticator */
2454 if (authp
&& authp
->length
)
2456 s2n(authp
->length
,p
);
2457 memcpy(p
, authp
->data
, authp
->length
);
2459 n
+= authp
->length
+ 2;
2467 s2n(0,p
);/* null authenticator length */
2471 tmp_buf
[0]=s
->client_version
>>8;
2472 tmp_buf
[1]=s
->client_version
&0xff;
2473 if (RAND_bytes(&(tmp_buf
[2]),sizeof tmp_buf
-2) <= 0)
2476 /* 20010420 VRS. Tried it this way; failed.
2477 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2478 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2479 ** kssl_ctx->length);
2480 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2483 memset(iv
, 0, sizeof iv
); /* per RFC 1510 */
2484 EVP_EncryptInit_ex(&ciph_ctx
,enc
, NULL
,
2486 EVP_EncryptUpdate(&ciph_ctx
,epms
,&outl
,tmp_buf
,
2488 EVP_EncryptFinal_ex(&ciph_ctx
,&(epms
[outl
]),&padl
);
2490 if (outl
> (int)sizeof epms
)
2492 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
2495 EVP_CIPHER_CTX_cleanup(&ciph_ctx
);
2497 /* KerberosWrapper.EncryptedPreMasterSecret */
2499 memcpy(p
, epms
, outl
);
2503 s
->session
->master_key_length
=
2504 s
->method
->ssl3_enc
->generate_master_secret(s
,
2505 s
->session
->master_key
,
2506 tmp_buf
, sizeof tmp_buf
);
2508 OPENSSL_cleanse(tmp_buf
, sizeof tmp_buf
);
2509 OPENSSL_cleanse(epms
, outl
);
2512 #ifndef OPENSSL_NO_DH
2513 else if (alg_k
& (SSL_kEDH
|SSL_kDHr
|SSL_kDHd
))
2515 DH
*dh_srvr
,*dh_clnt
;
2516 SESS_CERT
*scert
= s
->session
->sess_cert
;
2520 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
2521 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_UNEXPECTED_MESSAGE
);
2525 if (scert
->peer_dh_tmp
!= NULL
)
2526 dh_srvr
=scert
->peer_dh_tmp
;
2529 /* we get them from the cert */
2530 int idx
= scert
->peer_cert_type
;
2531 EVP_PKEY
*spkey
= NULL
;
2534 spkey
= X509_get_pubkey(
2535 scert
->peer_pkeys
[idx
].x509
);
2538 dh_srvr
= EVP_PKEY_get1_DH(spkey
);
2539 EVP_PKEY_free(spkey
);
2541 if (dh_srvr
== NULL
)
2543 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2544 ERR_R_INTERNAL_ERROR
);
2548 if (s
->s3
->flags
& TLS1_FLAGS_SKIP_CERT_VERIFY
)
2550 /* Use client certificate key */
2551 EVP_PKEY
*clkey
= s
->cert
->key
->privatekey
;
2554 dh_clnt
= EVP_PKEY_get1_DH(clkey
);
2555 if (dh_clnt
== NULL
)
2557 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2558 ERR_R_INTERNAL_ERROR
);
2564 /* generate a new random key */
2565 if ((dh_clnt
=DHparams_dup(dh_srvr
)) == NULL
)
2567 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2570 if (!DH_generate_key(dh_clnt
))
2572 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2578 /* use the 'p' output buffer for the DH key, but
2579 * make sure to clear it out afterwards */
2581 n
=DH_compute_key(p
,dh_srvr
->pub_key
,dh_clnt
);
2582 if (scert
->peer_dh_tmp
== NULL
)
2587 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2592 /* generate master key from the result */
2593 s
->session
->master_key_length
=
2594 s
->method
->ssl3_enc
->generate_master_secret(s
,
2595 s
->session
->master_key
,p
,n
);
2599 if (s
->s3
->flags
& TLS1_FLAGS_SKIP_CERT_VERIFY
)
2603 /* send off the data */
2604 n
=BN_num_bytes(dh_clnt
->pub_key
);
2606 BN_bn2bin(dh_clnt
->pub_key
,p
);
2612 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2616 #ifndef OPENSSL_NO_ECDH
2617 else if (alg_k
& (SSL_kEECDH
|SSL_kECDHr
|SSL_kECDHe
))
2619 const EC_GROUP
*srvr_group
= NULL
;
2621 int ecdh_clnt_cert
= 0;
2624 /* Did we send out the client's
2625 * ECDH share for use in premaster
2626 * computation as part of client certificate?
2627 * If so, set ecdh_clnt_cert to 1.
2629 if ((alg_k
& (SSL_kECDHr
|SSL_kECDHe
)) && (s
->cert
!= NULL
))
2631 /* XXX: For now, we do not support client
2632 * authentication using ECDH certificates.
2633 * To add such support, one needs to add
2634 * code that checks for appropriate
2635 * conditions and sets ecdh_clnt_cert to 1.
2636 * For example, the cert have an ECC
2637 * key on the same curve as the server's
2638 * and the key should be authorized for
2641 * One also needs to add code in ssl3_connect
2642 * to skip sending the certificate verify
2645 * if ((s->cert->key->privatekey != NULL) &&
2646 * (s->cert->key->privatekey->type ==
2647 * EVP_PKEY_EC) && ...)
2648 * ecdh_clnt_cert = 1;
2652 if (s
->session
->sess_cert
->peer_ecdh_tmp
!= NULL
)
2654 tkey
= s
->session
->sess_cert
->peer_ecdh_tmp
;
2658 /* Get the Server Public Key from Cert */
2659 srvr_pub_pkey
= X509_get_pubkey(s
->session
-> \
2660 sess_cert
->peer_pkeys
[SSL_PKEY_ECC
].x509
);
2661 if ((srvr_pub_pkey
== NULL
) ||
2662 (srvr_pub_pkey
->type
!= EVP_PKEY_EC
) ||
2663 (srvr_pub_pkey
->pkey
.ec
== NULL
))
2665 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2666 ERR_R_INTERNAL_ERROR
);
2670 tkey
= srvr_pub_pkey
->pkey
.ec
;
2673 srvr_group
= EC_KEY_get0_group(tkey
);
2674 srvr_ecpoint
= EC_KEY_get0_public_key(tkey
);
2676 if ((srvr_group
== NULL
) || (srvr_ecpoint
== NULL
))
2678 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2679 ERR_R_INTERNAL_ERROR
);
2683 if ((clnt_ecdh
=EC_KEY_new()) == NULL
)
2685 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2689 if (!EC_KEY_set_group(clnt_ecdh
, srvr_group
))
2691 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_EC_LIB
);
2696 /* Reuse key info from our certificate
2697 * We only need our private key to perform
2698 * the ECDH computation.
2700 const BIGNUM
*priv_key
;
2701 tkey
= s
->cert
->key
->privatekey
->pkey
.ec
;
2702 priv_key
= EC_KEY_get0_private_key(tkey
);
2703 if (priv_key
== NULL
)
2705 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2708 if (!EC_KEY_set_private_key(clnt_ecdh
, priv_key
))
2710 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_EC_LIB
);
2716 /* Generate a new ECDH key pair */
2717 if (!(EC_KEY_generate_key(clnt_ecdh
)))
2719 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
, ERR_R_ECDH_LIB
);
2724 /* use the 'p' output buffer for the ECDH key, but
2725 * make sure to clear it out afterwards
2728 field_size
= EC_GROUP_get_degree(srvr_group
);
2729 if (field_size
<= 0)
2731 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2735 n
=ECDH_compute_key(p
, (field_size
+7)/8, srvr_ecpoint
, clnt_ecdh
, NULL
);
2738 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2743 /* generate master key from the result */
2744 s
->session
->master_key_length
= s
->method
->ssl3_enc \
2745 -> generate_master_secret(s
,
2746 s
->session
->master_key
,
2749 memset(p
, 0, n
); /* clean up */
2753 /* Send empty client key exch message */
2758 /* First check the size of encoding and
2759 * allocate memory accordingly.
2762 EC_POINT_point2oct(srvr_group
,
2763 EC_KEY_get0_public_key(clnt_ecdh
),
2764 POINT_CONVERSION_UNCOMPRESSED
,
2767 encodedPoint
= (unsigned char *)
2768 OPENSSL_malloc(encoded_pt_len
*
2769 sizeof(unsigned char));
2770 bn_ctx
= BN_CTX_new();
2771 if ((encodedPoint
== NULL
) ||
2774 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2778 /* Encode the public key */
2779 n
= EC_POINT_point2oct(srvr_group
,
2780 EC_KEY_get0_public_key(clnt_ecdh
),
2781 POINT_CONVERSION_UNCOMPRESSED
,
2782 encodedPoint
, encoded_pt_len
, bn_ctx
);
2784 *p
= n
; /* length of encoded point */
2785 /* Encoded point will be copied here */
2787 /* copy the point */
2788 memcpy((unsigned char *)p
, encodedPoint
, n
);
2789 /* increment n to account for length field */
2793 /* Free allocated memory */
2794 BN_CTX_free(bn_ctx
);
2795 if (encodedPoint
!= NULL
) OPENSSL_free(encodedPoint
);
2796 if (clnt_ecdh
!= NULL
)
2797 EC_KEY_free(clnt_ecdh
);
2798 EVP_PKEY_free(srvr_pub_pkey
);
2800 #endif /* !OPENSSL_NO_ECDH */
2801 else if (alg_k
& SSL_kGOST
)
2803 /* GOST key exchange message creation */
2804 EVP_PKEY_CTX
*pkey_ctx
;
2807 unsigned int md_len
;
2809 unsigned char premaster_secret
[32],shared_ukm
[32], tmp
[256];
2810 EVP_MD_CTX
*ukm_hash
;
2813 /* Get server sertificate PKEY and create ctx from it */
2814 peer_cert
=s
->session
->sess_cert
->peer_pkeys
[(keytype
=SSL_PKEY_GOST01
)].x509
;
2816 peer_cert
=s
->session
->sess_cert
->peer_pkeys
[(keytype
=SSL_PKEY_GOST94
)].x509
;
2818 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER
);
2822 pkey_ctx
=EVP_PKEY_CTX_new(pub_key
=X509_get_pubkey(peer_cert
),NULL
);
2823 /* If we have send a certificate, and certificate key
2825 * parameters match those of server certificate, use
2826 * certificate key for key exchange
2829 /* Otherwise, generate ephemeral key pair */
2831 EVP_PKEY_encrypt_init(pkey_ctx
);
2832 /* Generate session key */
2833 RAND_bytes(premaster_secret
,32);
2834 /* If we have client certificate, use its secret as peer key */
2835 if (s
->s3
->tmp
.cert_req
&& s
->cert
->key
->privatekey
) {
2836 if (EVP_PKEY_derive_set_peer(pkey_ctx
,s
->cert
->key
->privatekey
) <=0) {
2837 /* If there was an error - just ignore it. Ephemeral key
2843 /* Compute shared IV and store it in algorithm-specific
2845 ukm_hash
= EVP_MD_CTX_create();
2846 EVP_DigestInit(ukm_hash
,EVP_get_digestbynid(NID_id_GostR3411_94
));
2847 EVP_DigestUpdate(ukm_hash
,s
->s3
->client_random
,SSL3_RANDOM_SIZE
);
2848 EVP_DigestUpdate(ukm_hash
,s
->s3
->server_random
,SSL3_RANDOM_SIZE
);
2849 EVP_DigestFinal_ex(ukm_hash
, shared_ukm
, &md_len
);
2850 EVP_MD_CTX_destroy(ukm_hash
);
2851 if (EVP_PKEY_CTX_ctrl(pkey_ctx
,-1,EVP_PKEY_OP_ENCRYPT
,EVP_PKEY_CTRL_SET_IV
,
2853 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2857 /* Make GOST keytransport blob message */
2858 /*Encapsulate it into sequence */
2859 *(p
++)=V_ASN1_SEQUENCE
| V_ASN1_CONSTRUCTED
;
2861 if (EVP_PKEY_encrypt(pkey_ctx
,tmp
,&msglen
,premaster_secret
,32)<0) {
2862 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2869 *(p
++)= msglen
& 0xff;
2874 *(p
++)= msglen
& 0xff;
2877 memcpy(p
, tmp
, msglen
);
2878 /* Check if pubkey from client certificate was used */
2879 if (EVP_PKEY_CTX_ctrl(pkey_ctx
, -1, -1, EVP_PKEY_CTRL_PEER_KEY
, 2, NULL
) > 0)
2881 /* Set flag "skip certificate verify" */
2882 s
->s3
->flags
|= TLS1_FLAGS_SKIP_CERT_VERIFY
;
2884 EVP_PKEY_CTX_free(pkey_ctx
);
2885 s
->session
->master_key_length
=
2886 s
->method
->ssl3_enc
->generate_master_secret(s
,
2887 s
->session
->master_key
,premaster_secret
,32);
2888 EVP_PKEY_free(pub_key
);
2891 #ifndef OPENSSL_NO_SRP
2892 else if (alg_k
& SSL_kSRP
)
2894 if (s
->srp_ctx
.A
!= NULL
)
2896 /* send off the data */
2897 n
=BN_num_bytes(s
->srp_ctx
.A
);
2899 BN_bn2bin(s
->srp_ctx
.A
,p
);
2904 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
2907 if (s
->session
->srp_username
!= NULL
)
2908 OPENSSL_free(s
->session
->srp_username
);
2909 s
->session
->srp_username
= BUF_strdup(s
->srp_ctx
.login
);
2910 if (s
->session
->srp_username
== NULL
)
2912 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2913 ERR_R_MALLOC_FAILURE
);
2917 if ((s
->session
->master_key_length
= SRP_generate_client_master_secret(s
,s
->session
->master_key
))<0)
2919 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
2924 #ifndef OPENSSL_NO_PSK
2925 else if (alg_k
& SSL_kPSK
)
2927 char identity
[PSK_MAX_IDENTITY_LEN
];
2928 unsigned char *t
= NULL
;
2929 unsigned char psk_or_pre_ms
[PSK_MAX_PSK_LEN
*2+4];
2930 unsigned int pre_ms_len
= 0, psk_len
= 0;
2934 if (s
->psk_client_callback
== NULL
)
2936 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2937 SSL_R_PSK_NO_CLIENT_CB
);
2941 psk_len
= s
->psk_client_callback(s
, s
->ctx
->psk_identity_hint
,
2942 identity
, PSK_MAX_IDENTITY_LEN
,
2943 psk_or_pre_ms
, sizeof(psk_or_pre_ms
));
2944 if (psk_len
> PSK_MAX_PSK_LEN
)
2946 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2947 ERR_R_INTERNAL_ERROR
);
2950 else if (psk_len
== 0)
2952 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2953 SSL_R_PSK_IDENTITY_NOT_FOUND
);
2957 /* create PSK pre_master_secret */
2958 pre_ms_len
= 2+psk_len
+2+psk_len
;
2960 memmove(psk_or_pre_ms
+psk_len
+4, psk_or_pre_ms
, psk_len
);
2962 memset(t
, 0, psk_len
);
2966 if (s
->session
->psk_identity_hint
!= NULL
)
2967 OPENSSL_free(s
->session
->psk_identity_hint
);
2968 s
->session
->psk_identity_hint
= BUF_strdup(s
->ctx
->psk_identity_hint
);
2969 if (s
->ctx
->psk_identity_hint
!= NULL
&&
2970 s
->session
->psk_identity_hint
== NULL
)
2972 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2973 ERR_R_MALLOC_FAILURE
);
2977 if (s
->session
->psk_identity
!= NULL
)
2978 OPENSSL_free(s
->session
->psk_identity
);
2979 s
->session
->psk_identity
= BUF_strdup(identity
);
2980 if (s
->session
->psk_identity
== NULL
)
2982 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2983 ERR_R_MALLOC_FAILURE
);
2987 s
->session
->master_key_length
=
2988 s
->method
->ssl3_enc
->generate_master_secret(s
,
2989 s
->session
->master_key
,
2990 psk_or_pre_ms
, pre_ms_len
);
2991 n
= strlen(identity
);
2993 memcpy(p
, identity
, n
);
2997 OPENSSL_cleanse(identity
, PSK_MAX_IDENTITY_LEN
);
2998 OPENSSL_cleanse(psk_or_pre_ms
, sizeof(psk_or_pre_ms
));
3001 ssl3_send_alert(s
, SSL3_AL_FATAL
, SSL_AD_HANDSHAKE_FAILURE
);
3008 ssl3_send_alert(s
, SSL3_AL_FATAL
,
3009 SSL_AD_HANDSHAKE_FAILURE
);
3010 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
3011 ERR_R_INTERNAL_ERROR
);
3015 ssl_set_handshake_header(s
, SSL3_MT_CLIENT_KEY_EXCHANGE
, n
);
3016 s
->state
=SSL3_ST_CW_KEY_EXCH_B
;
3019 /* SSL3_ST_CW_KEY_EXCH_B */
3020 return ssl_do_write(s
);
3022 #ifndef OPENSSL_NO_ECDH
3023 BN_CTX_free(bn_ctx
);
3024 if (encodedPoint
!= NULL
) OPENSSL_free(encodedPoint
);
3025 if (clnt_ecdh
!= NULL
)
3026 EC_KEY_free(clnt_ecdh
);
3027 EVP_PKEY_free(srvr_pub_pkey
);
3032 int ssl3_send_client_verify(SSL
*s
)
3035 unsigned char data
[MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
];
3037 EVP_PKEY_CTX
*pctx
=NULL
;
3043 EVP_MD_CTX_init(&mctx
);
3045 if (s
->state
== SSL3_ST_CW_CERT_VRFY_A
)
3047 p
= ssl_handshake_start(s
);
3048 pkey
=s
->cert
->key
->privatekey
;
3049 /* Create context from key and test if sha1 is allowed as digest */
3050 pctx
= EVP_PKEY_CTX_new(pkey
,NULL
);
3051 EVP_PKEY_sign_init(pctx
);
3052 if (EVP_PKEY_CTX_set_signature_md(pctx
, EVP_sha1())>0)
3054 if (!SSL_USE_SIGALGS(s
))
3055 s
->method
->ssl3_enc
->cert_verify_mac(s
,
3057 &(data
[MD5_DIGEST_LENGTH
]));
3063 /* For TLS v1.2 send signature algorithm and signature
3064 * using agreed digest and cached handshake records.
3066 if (SSL_USE_SIGALGS(s
))
3070 const EVP_MD
*md
= s
->cert
->key
->digest
;
3071 hdatalen
= BIO_get_mem_data(s
->s3
->handshake_buffer
,
3073 if (hdatalen
<= 0 || !tls12_get_sigandhash(p
, pkey
, md
))
3075 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3076 ERR_R_INTERNAL_ERROR
);
3081 fprintf(stderr
, "Using TLS 1.2 with client alg %s\n",
3084 if (!EVP_SignInit_ex(&mctx
, md
, NULL
)
3085 || !EVP_SignUpdate(&mctx
, hdata
, hdatalen
)
3086 || !EVP_SignFinal(&mctx
, p
+ 2, &u
, pkey
))
3088 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3094 if (!ssl3_digest_cached_records(s
))
3098 #ifndef OPENSSL_NO_RSA
3099 if (pkey
->type
== EVP_PKEY_RSA
)
3101 s
->method
->ssl3_enc
->cert_verify_mac(s
,
3104 if (RSA_sign(NID_md5_sha1
, data
,
3105 MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
,
3106 &(p
[2]), &u
, pkey
->pkey
.rsa
) <= 0 )
3108 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_RSA_LIB
);
3116 #ifndef OPENSSL_NO_DSA
3117 if (pkey
->type
== EVP_PKEY_DSA
)
3119 if (!DSA_sign(pkey
->save_type
,
3120 &(data
[MD5_DIGEST_LENGTH
]),
3121 SHA_DIGEST_LENGTH
,&(p
[2]),
3122 (unsigned int *)&j
,pkey
->pkey
.dsa
))
3124 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_DSA_LIB
);
3132 #ifndef OPENSSL_NO_ECDSA
3133 if (pkey
->type
== EVP_PKEY_EC
)
3135 if (!ECDSA_sign(pkey
->save_type
,
3136 &(data
[MD5_DIGEST_LENGTH
]),
3137 SHA_DIGEST_LENGTH
,&(p
[2]),
3138 (unsigned int *)&j
,pkey
->pkey
.ec
))
3140 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3149 if (pkey
->type
== NID_id_GostR3410_94
|| pkey
->type
== NID_id_GostR3410_2001
)
3151 unsigned char signbuf
[64];
3154 s
->method
->ssl3_enc
->cert_verify_mac(s
,
3155 NID_id_GostR3411_94
,
3157 if (EVP_PKEY_sign(pctx
, signbuf
, &sigsize
, data
, 32) <= 0) {
3158 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3159 ERR_R_INTERNAL_ERROR
);
3162 for (i
=63,j
=0; i
>=0; j
++, i
--) {
3170 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_INTERNAL_ERROR
);
3173 ssl_set_handshake_header(s
, SSL3_MT_CERTIFICATE_VERIFY
, n
);
3174 s
->state
=SSL3_ST_CW_CERT_VRFY_B
;
3176 EVP_MD_CTX_cleanup(&mctx
);
3177 EVP_PKEY_CTX_free(pctx
);
3178 return ssl_do_write(s
);
3180 EVP_MD_CTX_cleanup(&mctx
);
3181 EVP_PKEY_CTX_free(pctx
);
3185 /* Check a certificate can be used for client authentication. Currently
3186 * check cert exists, if we have a suitable digest for TLS 1.2 if
3187 * static DH client certificates can be used and optionally checks
3188 * suitability for Suite B.
3190 static int ssl3_check_client_certificate(SSL
*s
)
3192 unsigned long alg_k
;
3193 if (!s
->cert
|| !s
->cert
->key
->x509
|| !s
->cert
->key
->privatekey
)
3195 /* If no suitable signature algorithm can't use certificate */
3196 if (SSL_USE_SIGALGS(s
) && !s
->cert
->key
->digest
)
3198 /* If strict mode check suitability of chain before using it.
3199 * This also adjusts suite B digest if necessary.
3201 if (s
->cert
->cert_flags
& SSL_CERT_FLAGS_CHECK_TLS_STRICT
&&
3202 !tls1_check_chain(s
, NULL
, NULL
, NULL
, -2))
3204 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
3205 /* See if we can use client certificate for fixed DH */
3206 if (alg_k
& (SSL_kDHr
|SSL_kDHd
))
3208 SESS_CERT
*scert
= s
->session
->sess_cert
;
3209 int i
= scert
->peer_cert_type
;
3210 EVP_PKEY
*clkey
= NULL
, *spkey
= NULL
;
3211 clkey
= s
->cert
->key
->privatekey
;
3212 /* If client key not DH assume it can be used */
3213 if (EVP_PKEY_id(clkey
) != EVP_PKEY_DH
)
3216 spkey
= X509_get_pubkey(scert
->peer_pkeys
[i
].x509
);
3219 /* Compare server and client parameters */
3220 i
= EVP_PKEY_cmp_parameters(clkey
, spkey
);
3221 EVP_PKEY_free(spkey
);
3225 s
->s3
->flags
|= TLS1_FLAGS_SKIP_CERT_VERIFY
;
3230 int ssl3_send_client_certificate(SSL
*s
)
3233 EVP_PKEY
*pkey
=NULL
;
3236 if (s
->state
== SSL3_ST_CW_CERT_A
)
3238 /* Let cert callback update client certificates if required */
3239 if (s
->cert
->cert_cb
3240 && s
->cert
->cert_cb(s
, s
->cert
->cert_cb_arg
) <= 0)
3242 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_INTERNAL_ERROR
);
3245 if (ssl3_check_client_certificate(s
))
3246 s
->state
=SSL3_ST_CW_CERT_C
;
3248 s
->state
=SSL3_ST_CW_CERT_B
;
3251 /* We need to get a client cert */
3252 if (s
->state
== SSL3_ST_CW_CERT_B
)
3254 /* If we get an error, we need to
3255 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3256 * We then get retied later */
3258 i
= ssl_do_client_cert_cb(s
, &x509
, &pkey
);
3261 s
->rwstate
=SSL_X509_LOOKUP
;
3264 s
->rwstate
=SSL_NOTHING
;
3265 if ((i
== 1) && (pkey
!= NULL
) && (x509
!= NULL
))
3267 s
->state
=SSL3_ST_CW_CERT_B
;
3268 if ( !SSL_use_certificate(s
,x509
) ||
3269 !SSL_use_PrivateKey(s
,pkey
))
3275 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE
,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK
);
3278 if (x509
!= NULL
) X509_free(x509
);
3279 if (pkey
!= NULL
) EVP_PKEY_free(pkey
);
3280 if (i
&& !ssl3_check_client_certificate(s
))
3284 if (s
->version
== SSL3_VERSION
)
3286 s
->s3
->tmp
.cert_req
=0;
3287 ssl3_send_alert(s
,SSL3_AL_WARNING
,SSL_AD_NO_CERTIFICATE
);
3292 s
->s3
->tmp
.cert_req
=2;
3296 /* Ok, we have a cert */
3297 s
->state
=SSL3_ST_CW_CERT_C
;
3300 if (s
->state
== SSL3_ST_CW_CERT_C
)
3302 s
->state
=SSL3_ST_CW_CERT_D
;
3303 ssl3_output_cert_chain(s
,
3304 (s
->s3
->tmp
.cert_req
== 2)?NULL
:s
->cert
->key
);
3306 /* SSL3_ST_CW_CERT_D */
3307 return ssl_do_write(s
);
3310 #define has_bits(i,m) (((i)&(m)) == (m))
3312 int ssl3_check_cert_and_algorithm(SSL
*s
)
3316 EVP_PKEY
*pkey
=NULL
;
3318 #ifndef OPENSSL_NO_RSA
3321 #ifndef OPENSSL_NO_DH
3325 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
3326 alg_a
=s
->s3
->tmp
.new_cipher
->algorithm_auth
;
3328 /* we don't have a certificate */
3329 if ((alg_a
& (SSL_aNULL
|SSL_aKRB5
)) || (alg_k
& SSL_kPSK
))
3332 sc
=s
->session
->sess_cert
;
3335 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,ERR_R_INTERNAL_ERROR
);
3339 #ifndef OPENSSL_NO_RSA
3340 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
3342 #ifndef OPENSSL_NO_DH
3343 dh
=s
->session
->sess_cert
->peer_dh_tmp
;
3346 /* This is the passed certificate */
3348 idx
=sc
->peer_cert_type
;
3349 #ifndef OPENSSL_NO_ECDH
3350 if (idx
== SSL_PKEY_ECC
)
3352 if (ssl_check_srvr_ecc_cert_and_alg(sc
->peer_pkeys
[idx
].x509
,
3354 { /* check failed */
3355 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_BAD_ECC_CERT
);
3363 else if (alg_a
& SSL_aECDSA
)
3365 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_ECDSA_SIGNING_CERT
);
3368 else if (alg_k
& (SSL_kECDHr
|SSL_kECDHe
))
3370 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_ECDH_CERT
);
3374 pkey
=X509_get_pubkey(sc
->peer_pkeys
[idx
].x509
);
3375 i
=X509_certificate_type(sc
->peer_pkeys
[idx
].x509
,pkey
);
3376 EVP_PKEY_free(pkey
);
3379 /* Check that we have a certificate if we require one */
3380 if ((alg_a
& SSL_aRSA
) && !has_bits(i
,EVP_PK_RSA
|EVP_PKT_SIGN
))
3382 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_SIGNING_CERT
);
3385 #ifndef OPENSSL_NO_DSA
3386 else if ((alg_a
& SSL_aDSS
) && !has_bits(i
,EVP_PK_DSA
|EVP_PKT_SIGN
))
3388 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DSA_SIGNING_CERT
);
3392 #ifndef OPENSSL_NO_RSA
3393 if ((alg_k
& SSL_kRSA
) &&
3394 !(has_bits(i
,EVP_PK_RSA
|EVP_PKT_ENC
) || (rsa
!= NULL
)))
3396 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_ENCRYPTING_CERT
);
3400 #ifndef OPENSSL_NO_DH
3401 if ((alg_k
& SSL_kEDH
) &&
3402 !(has_bits(i
,EVP_PK_DH
|EVP_PKT_EXCH
) || (dh
!= NULL
)))
3404 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_KEY
);
3407 else if ((alg_k
& SSL_kDHr
) && (TLS1_get_version(s
) < TLS1_2_VERSION
) &&
3408 !has_bits(i
,EVP_PK_DH
|EVP_PKS_RSA
))
3410 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_RSA_CERT
);
3413 #ifndef OPENSSL_NO_DSA
3414 else if ((alg_k
& SSL_kDHd
) && (TLS1_get_version(s
) < TLS1_2_VERSION
) &&
3415 !has_bits(i
,EVP_PK_DH
|EVP_PKS_DSA
))
3417 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_DSA_CERT
);
3423 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) && !has_bits(i
,EVP_PKT_EXP
))
3425 #ifndef OPENSSL_NO_RSA
3426 if (alg_k
& SSL_kRSA
)
3429 || RSA_size(rsa
)*8 > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
3431 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_RSA_KEY
);
3437 #ifndef OPENSSL_NO_DH
3438 if (alg_k
& (SSL_kEDH
|SSL_kDHr
|SSL_kDHd
))
3441 || DH_size(dh
)*8 > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
3443 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_DH_KEY
);
3450 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE
);
3456 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_HANDSHAKE_FAILURE
);
3461 /* Check to see if handshake is full or resumed. Usually this is just a
3462 * case of checking to see if a cache hit has occurred. In the case of
3463 * session tickets we have to check the next message to be sure.
3466 #ifndef OPENSSL_NO_TLSEXT
3467 # ifndef OPENSSL_NO_NEXTPROTONEG
3468 int ssl3_send_next_proto(SSL
*s
)
3470 unsigned int len
, padding_len
;
3473 if (s
->state
== SSL3_ST_CW_NEXT_PROTO_A
)
3475 len
= s
->next_proto_negotiated_len
;
3476 padding_len
= 32 - ((len
+ 2) % 32);
3477 d
= (unsigned char *)s
->init_buf
->data
;
3479 memcpy(d
+ 5, s
->next_proto_negotiated
, len
);
3480 d
[5 + len
] = padding_len
;
3481 memset(d
+ 6 + len
, 0, padding_len
);
3482 *(d
++)=SSL3_MT_NEXT_PROTO
;
3483 l2n3(2 + len
+ padding_len
, d
);
3484 s
->state
= SSL3_ST_CW_NEXT_PROTO_B
;
3485 s
->init_num
= 4 + 2 + len
+ padding_len
;
3489 return ssl3_do_write(s
, SSL3_RT_HANDSHAKE
);
3493 int ssl3_check_finished(SSL
*s
)
3497 /* If we have no ticket it cannot be a resumed session. */
3498 if (!s
->session
->tlsext_tick
)
3500 /* this function is called when we really expect a Certificate
3501 * message, so permit appropriate message length */
3502 n
=s
->method
->ssl_get_message(s
,
3508 if (!ok
) return((int)n
);
3509 s
->s3
->tmp
.reuse_message
= 1;
3510 if ((s
->s3
->tmp
.message_type
== SSL3_MT_FINISHED
)
3511 || (s
->s3
->tmp
.message_type
== SSL3_MT_NEWSESSION_TICKET
))
3518 int ssl_do_client_cert_cb(SSL
*s
, X509
**px509
, EVP_PKEY
**ppkey
)
3521 #ifndef OPENSSL_NO_ENGINE
3522 if (s
->ctx
->client_cert_engine
)
3524 i
= ENGINE_load_ssl_client_cert(s
->ctx
->client_cert_engine
, s
,
3525 SSL_get_client_CA_list(s
),
3526 px509
, ppkey
, NULL
, NULL
, NULL
);
3531 if (s
->ctx
->client_cert_cb
)
3532 i
= s
->ctx
->client_cert_cb(s
,px509
,ppkey
);
3536 #ifndef OPENSSL_NO_TLSEXT
3537 int tls1_get_server_supplemental_data(SSL
*s
)
3541 unsigned long supp_data_len
, authz_data_len
;
3543 unsigned short supp_data_type
, authz_data_type
, proof_len
;
3544 const unsigned char *p
;
3545 unsigned char *new_proof
;
3547 n
=s
->method
->ssl_get_message(s
,
3548 SSL3_ST_CR_SUPPLEMENTAL_DATA_A
,
3549 SSL3_ST_CR_SUPPLEMENTAL_DATA_B
,
3550 SSL3_MT_SUPPLEMENTAL_DATA
,
3551 /* use default limit */
3552 TLSEXT_MAXLEN_supplemental_data
,
3555 if (!ok
) return((int)n
);
3557 p
= (unsigned char *)s
->init_msg
;
3559 /* The message cannot be empty */
3562 al
= SSL_AD_DECODE_ERROR
;
3563 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA
,SSL_R_LENGTH_MISMATCH
);
3566 /* Length of supplemental data */
3567 n2l3(p
,supp_data_len
);
3569 /* We must have at least one supplemental data entry
3570 * with type (1 byte) and length (2 bytes). */
3571 if (supp_data_len
!= (unsigned long) n
|| n
< 4)
3573 al
= SSL_AD_DECODE_ERROR
;
3574 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA
,SSL_R_LENGTH_MISMATCH
);
3577 /* Supplemental data type: must be authz_data */
3578 n2s(p
,supp_data_type
);
3580 if (supp_data_type
!= TLSEXT_SUPPLEMENTALDATATYPE_authz_data
)
3582 al
= SSL_AD_UNEXPECTED_MESSAGE
;
3583 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA
,SSL_R_UNKNOWN_SUPPLEMENTAL_DATA_TYPE
);
3586 /* Authz data length */
3587 n2s(p
, authz_data_len
);
3589 if (authz_data_len
!= (unsigned long) n
|| n
< 1)
3591 al
= SSL_AD_DECODE_ERROR
;
3592 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA
,SSL_R_LENGTH_MISMATCH
);
3595 /* Authz data type: must be audit_proof */
3596 authz_data_type
= *(p
++);
3598 if (authz_data_type
!= TLSEXT_AUTHZDATAFORMAT_audit_proof
)
3600 al
=SSL_AD_UNEXPECTED_MESSAGE
;
3601 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA
,SSL_R_UNKNOWN_AUTHZ_DATA_TYPE
);
3604 /* We have a proof: read its length */
3607 al
= SSL_AD_DECODE_ERROR
;
3608 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA
,SSL_R_LENGTH_MISMATCH
);
3613 if (proof_len
!= (unsigned long) n
)
3615 al
= SSL_AD_DECODE_ERROR
;
3616 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA
,SSL_R_LENGTH_MISMATCH
);
3619 /* Store the proof */
3620 new_proof
= OPENSSL_realloc(s
->session
->audit_proof
,
3622 if (new_proof
== NULL
)
3624 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA
,ERR_R_MALLOC_FAILURE
);
3627 s
->session
->audit_proof_length
= proof_len
;
3628 s
->session
->audit_proof
= new_proof
;
3629 memcpy(s
->session
->audit_proof
, p
, proof_len
);
3631 /* Got the proof, but can't verify it yet. */
3634 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);