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
;
309 s
->state
=SSL3_ST_CR_CERT_A
;
313 case SSL3_ST_CR_CERT_A
:
314 case SSL3_ST_CR_CERT_B
:
315 #ifndef OPENSSL_NO_TLSEXT
316 ret
=ssl3_check_finished(s
);
317 if (ret
<= 0) goto end
;
321 if (s
->tlsext_ticket_expected
)
322 s
->state
=SSL3_ST_CR_SESSION_TICKET_A
;
324 s
->state
=SSL3_ST_CR_FINISHED_A
;
329 /* Check if it is anon DH/ECDH */
331 if (!(s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aNULL
) &&
332 !(s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kPSK
))
334 ret
=ssl3_get_server_certificate(s
);
335 if (ret
<= 0) goto end
;
336 #ifndef OPENSSL_NO_TLSEXT
337 if (s
->tlsext_status_expected
)
338 s
->state
=SSL3_ST_CR_CERT_STATUS_A
;
340 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
345 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
352 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
357 case SSL3_ST_CR_KEY_EXCH_A
:
358 case SSL3_ST_CR_KEY_EXCH_B
:
359 ret
=ssl3_get_key_exchange(s
);
360 if (ret
<= 0) goto end
;
361 s
->state
=SSL3_ST_CR_CERT_REQ_A
;
364 /* at this point we check that we have the
365 * required stuff from the server */
366 if (!ssl3_check_cert_and_algorithm(s
))
373 case SSL3_ST_CR_CERT_REQ_A
:
374 case SSL3_ST_CR_CERT_REQ_B
:
375 ret
=ssl3_get_certificate_request(s
);
376 if (ret
<= 0) goto end
;
377 s
->state
=SSL3_ST_CR_SRVR_DONE_A
;
381 case SSL3_ST_CR_SRVR_DONE_A
:
382 case SSL3_ST_CR_SRVR_DONE_B
:
383 ret
=ssl3_get_server_done(s
);
384 if (ret
<= 0) goto end
;
385 #ifndef OPENSSL_NO_SRP
386 if (s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kSRP
)
388 if ((ret
= SRP_Calc_A_param(s
))<=0)
390 SSLerr(SSL_F_SSL3_CONNECT
,SSL_R_SRP_A_CALC
);
391 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_INTERNAL_ERROR
);
396 if (s
->s3
->tmp
.cert_req
)
397 s
->state
=SSL3_ST_CW_CERT_A
;
399 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
404 case SSL3_ST_CW_CERT_A
:
405 case SSL3_ST_CW_CERT_B
:
406 case SSL3_ST_CW_CERT_C
:
407 case SSL3_ST_CW_CERT_D
:
408 ret
=ssl3_send_client_certificate(s
);
409 if (ret
<= 0) goto end
;
410 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
414 case SSL3_ST_CW_KEY_EXCH_A
:
415 case SSL3_ST_CW_KEY_EXCH_B
:
416 ret
=ssl3_send_client_key_exchange(s
);
417 if (ret
<= 0) goto end
;
418 /* EAY EAY EAY need to check for DH fix cert
420 /* For TLS, cert_req is set to 2, so a cert chain
421 * of nothing is sent, but no verify packet is sent */
422 /* XXX: For now, we do not support client
423 * authentication in ECDH cipher suites with
424 * ECDH (rather than ECDSA) certificates.
425 * We need to skip the certificate verify
426 * message when client's ECDH public key is sent
427 * inside the client certificate.
429 if (s
->s3
->tmp
.cert_req
== 1)
431 s
->state
=SSL3_ST_CW_CERT_VRFY_A
;
435 s
->state
=SSL3_ST_CW_CHANGE_A
;
436 s
->s3
->change_cipher_spec
=0;
438 if (s
->s3
->flags
& TLS1_FLAGS_SKIP_CERT_VERIFY
)
440 s
->state
=SSL3_ST_CW_CHANGE_A
;
441 s
->s3
->change_cipher_spec
=0;
447 case SSL3_ST_CW_CERT_VRFY_A
:
448 case SSL3_ST_CW_CERT_VRFY_B
:
449 ret
=ssl3_send_client_verify(s
);
450 if (ret
<= 0) goto end
;
451 s
->state
=SSL3_ST_CW_CHANGE_A
;
453 s
->s3
->change_cipher_spec
=0;
456 case SSL3_ST_CW_CHANGE_A
:
457 case SSL3_ST_CW_CHANGE_B
:
458 ret
=ssl3_send_change_cipher_spec(s
,
459 SSL3_ST_CW_CHANGE_A
,SSL3_ST_CW_CHANGE_B
);
460 if (ret
<= 0) goto end
;
462 #if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
463 s
->state
=SSL3_ST_CW_FINISHED_A
;
465 if (s
->s3
->next_proto_neg_seen
)
466 s
->state
=SSL3_ST_CW_NEXT_PROTO_A
;
468 s
->state
=SSL3_ST_CW_FINISHED_A
;
472 s
->session
->cipher
=s
->s3
->tmp
.new_cipher
;
473 #ifdef OPENSSL_NO_COMP
474 s
->session
->compress_meth
=0;
476 if (s
->s3
->tmp
.new_compression
== NULL
)
477 s
->session
->compress_meth
=0;
479 s
->session
->compress_meth
=
480 s
->s3
->tmp
.new_compression
->id
;
482 if (!s
->method
->ssl3_enc
->setup_key_block(s
))
488 if (!s
->method
->ssl3_enc
->change_cipher_state(s
,
489 SSL3_CHANGE_CIPHER_CLIENT_WRITE
))
497 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
498 case SSL3_ST_CW_NEXT_PROTO_A
:
499 case SSL3_ST_CW_NEXT_PROTO_B
:
500 ret
=ssl3_send_next_proto(s
);
501 if (ret
<= 0) goto end
;
502 s
->state
=SSL3_ST_CW_FINISHED_A
;
506 case SSL3_ST_CW_FINISHED_A
:
507 case SSL3_ST_CW_FINISHED_B
:
508 ret
=ssl3_send_finished(s
,
509 SSL3_ST_CW_FINISHED_A
,SSL3_ST_CW_FINISHED_B
,
510 s
->method
->ssl3_enc
->client_finished_label
,
511 s
->method
->ssl3_enc
->client_finished_label_len
);
512 if (ret
<= 0) goto end
;
513 s
->s3
->flags
|= SSL3_FLAGS_CCS_OK
;
514 s
->state
=SSL3_ST_CW_FLUSH
;
517 s
->s3
->flags
&= ~SSL3_FLAGS_POP_BUFFER
;
520 s
->s3
->tmp
.next_state
=SSL_ST_OK
;
521 if (s
->s3
->flags
& SSL3_FLAGS_DELAY_CLIENT_FINISHED
)
524 s
->s3
->flags
|=SSL3_FLAGS_POP_BUFFER
;
525 s
->s3
->delay_buf_pop_ret
=0;
530 #ifndef OPENSSL_NO_TLSEXT
531 /* Allow NewSessionTicket if ticket expected */
532 if (s
->tlsext_ticket_expected
)
533 s
->s3
->tmp
.next_state
=SSL3_ST_CR_SESSION_TICKET_A
;
537 s
->s3
->tmp
.next_state
=SSL3_ST_CR_FINISHED_A
;
542 #ifndef OPENSSL_NO_TLSEXT
543 case SSL3_ST_CR_SESSION_TICKET_A
:
544 case SSL3_ST_CR_SESSION_TICKET_B
:
545 ret
=ssl3_get_new_session_ticket(s
);
546 if (ret
<= 0) goto end
;
547 s
->state
=SSL3_ST_CR_FINISHED_A
;
551 case SSL3_ST_CR_CERT_STATUS_A
:
552 case SSL3_ST_CR_CERT_STATUS_B
:
553 ret
=ssl3_get_cert_status(s
);
554 if (ret
<= 0) goto end
;
555 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
560 case SSL3_ST_CR_FINISHED_A
:
561 case SSL3_ST_CR_FINISHED_B
:
563 s
->s3
->flags
|= SSL3_FLAGS_CCS_OK
;
564 ret
=ssl3_get_finished(s
,SSL3_ST_CR_FINISHED_A
,
565 SSL3_ST_CR_FINISHED_B
);
566 if (ret
<= 0) goto end
;
569 s
->state
=SSL3_ST_CW_CHANGE_A
;
575 case SSL3_ST_CW_FLUSH
:
576 s
->rwstate
=SSL_WRITING
;
577 if (BIO_flush(s
->wbio
) <= 0)
582 s
->rwstate
=SSL_NOTHING
;
583 s
->state
=s
->s3
->tmp
.next_state
;
587 /* clean a few things up */
588 ssl3_cleanup_key_block(s
);
590 if (s
->init_buf
!= NULL
)
592 BUF_MEM_free(s
->init_buf
);
596 /* If we are not 'joining' the last two packets,
597 * remove the buffering now */
598 if (!(s
->s3
->flags
& SSL3_FLAGS_POP_BUFFER
))
599 ssl_free_wbio_buffer(s
);
600 /* else do it later in ssl3_write */
606 ssl_update_cache(s
,SSL_SESS_CACHE_CLIENT
);
607 if (s
->hit
) s
->ctx
->stats
.sess_hit
++;
611 s
->handshake_func
=ssl3_connect
;
612 s
->ctx
->stats
.sess_connect_good
++;
614 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_DONE
,1);
620 SSLerr(SSL_F_SSL3_CONNECT
,SSL_R_UNKNOWN_STATE
);
626 /* did we do anything */
627 if (!s
->s3
->tmp
.reuse_message
&& !skip
)
631 if ((ret
=BIO_flush(s
->wbio
)) <= 0)
635 if ((cb
!= NULL
) && (s
->state
!= state
))
639 cb(s
,SSL_CB_CONNECT_LOOP
,1);
650 cb(s
,SSL_CB_CONNECT_EXIT
,ret
);
655 int ssl3_client_hello(SSL
*s
)
661 #ifndef OPENSSL_NO_COMP
666 buf
=(unsigned char *)s
->init_buf
->data
;
667 if (s
->state
== SSL3_ST_CW_CLNT_HELLO_A
)
669 SSL_SESSION
*sess
= s
->session
;
670 if ((sess
== NULL
) ||
671 (sess
->ssl_version
!= s
->version
) ||
672 #ifdef OPENSSL_NO_TLSEXT
673 !sess
->session_id_length
||
675 (!sess
->session_id_length
&& !sess
->tlsext_tick
) ||
677 (sess
->not_resumable
))
679 if (!ssl_get_new_session(s
,0))
682 /* else use the pre-loaded session */
684 p
=s
->s3
->client_random
;
686 if (ssl_fill_hello_random(s
, 0, p
, SSL3_RANDOM_SIZE
) <= 0)
689 /* Do the message type and length last */
692 /* version indicates the negotiated version: for example from
693 * an SSLv2/v3 compatible client hello). The client_version
694 * field is the maximum version we permit and it is also
695 * used in RSA encrypted premaster secrets. Some servers can
696 * choke if we initially report a higher version then
697 * renegotiate to a lower one in the premaster secret. This
698 * didn't happen with TLS 1.0 as most servers supported it
699 * but it can with TLS 1.1 or later if the server only supports
702 * Possible scenario with previous logic:
703 * 1. Client hello indicates TLS 1.2
704 * 2. Server hello says TLS 1.0
705 * 3. RSA encrypted premaster secret uses 1.2.
706 * 4. Handhaked proceeds using TLS 1.0.
707 * 5. Server sends hello request to renegotiate.
708 * 6. Client hello indicates TLS v1.0 as we now
709 * know that is maximum server supports.
710 * 7. Server chokes on RSA encrypted premaster secret
711 * containing version 1.0.
713 * For interoperability it should be OK to always use the
714 * maximum version we support in client hello and then rely
715 * on the checking of version to ensure the servers isn't
716 * being inconsistent: for example initially negotiating with
717 * TLS 1.0 and renegotiating with TLS 1.2. We do this by using
718 * client_version in client hello and not resetting it to
719 * the negotiated version.
722 *(p
++)=s
->version
>>8;
723 *(p
++)=s
->version
&0xff;
724 s
->client_version
=s
->version
;
726 *(p
++)=s
->client_version
>>8;
727 *(p
++)=s
->client_version
&0xff;
731 memcpy(p
,s
->s3
->client_random
,SSL3_RANDOM_SIZE
);
738 i
=s
->session
->session_id_length
;
742 if (i
> (int)sizeof(s
->session
->session_id
))
744 SSLerr(SSL_F_SSL3_CLIENT_HELLO
, ERR_R_INTERNAL_ERROR
);
747 memcpy(p
,s
->session
->session_id
,i
);
751 /* Ciphers supported */
752 i
=ssl_cipher_list_to_bytes(s
,SSL_get_ciphers(s
),&(p
[2]),0);
755 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,SSL_R_NO_CIPHERS_AVAILABLE
);
758 #ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
759 /* Some servers hang if client hello > 256 bytes
760 * as hack workaround chop number of supported ciphers
761 * to keep it well below this if we use TLS v1.2
763 if (TLS1_get_version(s
) >= TLS1_2_VERSION
764 && i
> OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
)
765 i
= OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
& ~1;
771 #ifdef OPENSSL_NO_COMP
775 if ((s
->options
& SSL_OP_NO_COMPRESSION
)
776 || !s
->ctx
->comp_methods
)
779 j
=sk_SSL_COMP_num(s
->ctx
->comp_methods
);
783 comp
=sk_SSL_COMP_value(s
->ctx
->comp_methods
,i
);
787 *(p
++)=0; /* Add the NULL method */
789 #ifndef OPENSSL_NO_TLSEXT
791 if (ssl_prepare_clienthello_tlsext(s
) <= 0)
793 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,SSL_R_CLIENTHELLO_TLSEXT
);
796 if ((p
= ssl_add_clienthello_tlsext(s
, p
, buf
+SSL3_RT_MAX_PLAIN_LENGTH
)) == NULL
)
798 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,ERR_R_INTERNAL_ERROR
);
805 *(d
++)=SSL3_MT_CLIENT_HELLO
;
808 s
->state
=SSL3_ST_CW_CLNT_HELLO_B
;
809 /* number of bytes to write */
814 /* SSL3_ST_CW_CLNT_HELLO_B */
815 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
820 int ssl3_get_server_hello(SSL
*s
)
822 STACK_OF(SSL_CIPHER
) *sk
;
828 #ifndef OPENSSL_NO_COMP
832 n
=s
->method
->ssl_get_message(s
,
833 SSL3_ST_CR_SRVR_HELLO_A
,
834 SSL3_ST_CR_SRVR_HELLO_B
,
839 if (!ok
) return((int)n
);
841 if ( SSL_version(s
) == DTLS1_VERSION
|| SSL_version(s
) == DTLS1_BAD_VER
)
843 if ( s
->s3
->tmp
.message_type
== DTLS1_MT_HELLO_VERIFY_REQUEST
)
845 if ( s
->d1
->send_cookie
== 0)
847 s
->s3
->tmp
.reuse_message
= 1;
850 else /* already sent a cookie */
852 al
=SSL_AD_UNEXPECTED_MESSAGE
;
853 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_MESSAGE_TYPE
);
859 if ( s
->s3
->tmp
.message_type
!= SSL3_MT_SERVER_HELLO
)
861 al
=SSL_AD_UNEXPECTED_MESSAGE
;
862 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_MESSAGE_TYPE
);
866 d
=p
=(unsigned char *)s
->init_msg
;
868 if ((p
[0] != (s
->version
>>8)) || (p
[1] != (s
->version
&0xff)))
870 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_SSL_VERSION
);
871 s
->version
=(s
->version
&0xff00)|p
[1];
872 al
=SSL_AD_PROTOCOL_VERSION
;
877 /* load the server hello data */
878 /* load the server random */
879 memcpy(s
->s3
->server_random
,p
,SSL3_RANDOM_SIZE
);
882 /* get the session-id */
885 if ((j
> sizeof s
->session
->session_id
) || (j
> SSL3_SESSION_ID_SIZE
))
887 al
=SSL_AD_ILLEGAL_PARAMETER
;
888 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_SSL3_SESSION_ID_TOO_LONG
);
892 #ifndef OPENSSL_NO_TLSEXT
893 /* check if we want to resume the session based on external pre-shared secret */
894 if (s
->version
>= TLS1_VERSION
&& s
->tls_session_secret_cb
)
896 SSL_CIPHER
*pref_cipher
=NULL
;
897 s
->session
->master_key_length
=sizeof(s
->session
->master_key
);
898 if (s
->tls_session_secret_cb(s
, s
->session
->master_key
,
899 &s
->session
->master_key_length
,
901 s
->tls_session_secret_cb_arg
))
903 s
->session
->cipher
= pref_cipher
?
904 pref_cipher
: ssl_get_cipher_by_char(s
, p
+j
);
905 s
->s3
->flags
|= SSL3_FLAGS_CCS_OK
;
908 #endif /* OPENSSL_NO_TLSEXT */
910 if (j
!= 0 && j
== s
->session
->session_id_length
911 && memcmp(p
,s
->session
->session_id
,j
) == 0)
913 if(s
->sid_ctx_length
!= s
->session
->sid_ctx_length
914 || memcmp(s
->session
->sid_ctx
,s
->sid_ctx
,s
->sid_ctx_length
))
916 /* actually a client application bug */
917 al
=SSL_AD_ILLEGAL_PARAMETER
;
918 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT
);
921 s
->s3
->flags
|= SSL3_FLAGS_CCS_OK
;
924 else /* a miss or crap from the other end */
926 /* If we were trying for session-id reuse, make a new
927 * SSL_SESSION so we don't stuff up other people */
929 if (s
->session
->session_id_length
> 0)
931 if (!ssl_get_new_session(s
,0))
933 al
=SSL_AD_INTERNAL_ERROR
;
937 s
->session
->session_id_length
=j
;
938 memcpy(s
->session
->session_id
,p
,j
); /* j could be 0 */
941 c
=ssl_get_cipher_by_char(s
,p
);
945 al
=SSL_AD_ILLEGAL_PARAMETER
;
946 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNKNOWN_CIPHER_RETURNED
);
949 /* TLS v1.2 only ciphersuites require v1.2 or later */
950 if ((c
->algorithm_ssl
& SSL_TLSV1_2
) &&
951 (TLS1_get_version(s
) < TLS1_2_VERSION
))
953 al
=SSL_AD_ILLEGAL_PARAMETER
;
954 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_CIPHER_RETURNED
);
957 #ifndef OPENSSL_NO_SRP
958 if (((c
->algorithm_mkey
& SSL_kSRP
) || (c
->algorithm_auth
& SSL_aSRP
)) &&
959 !(s
->srp_ctx
.srp_Mask
& SSL_kSRP
))
961 al
=SSL_AD_ILLEGAL_PARAMETER
;
962 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_CIPHER_RETURNED
);
965 #endif /* OPENSSL_NO_SRP */
966 p
+=ssl_put_cipher_by_char(s
,NULL
,NULL
);
968 sk
=ssl_get_ciphers_by_id(s
);
969 i
=sk_SSL_CIPHER_find(sk
,c
);
972 /* we did not say we would use this cipher */
973 al
=SSL_AD_ILLEGAL_PARAMETER
;
974 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_CIPHER_RETURNED
);
978 /* Depending on the session caching (internal/external), the cipher
979 and/or cipher_id values may not be set. Make sure that
980 cipher_id is set and use it for comparison. */
981 if (s
->session
->cipher
)
982 s
->session
->cipher_id
= s
->session
->cipher
->id
;
983 if (s
->hit
&& (s
->session
->cipher_id
!= c
->id
))
985 /* Workaround is now obsolete */
988 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
))
991 al
=SSL_AD_ILLEGAL_PARAMETER
;
992 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED
);
996 s
->s3
->tmp
.new_cipher
=c
;
997 /* Don't digest cached records if TLS v1.2: we may need them for
998 * client authentication.
1000 if (TLS1_get_version(s
) < TLS1_2_VERSION
&& !ssl3_digest_cached_records(s
))
1002 al
= SSL_AD_INTERNAL_ERROR
;
1005 /* lets get the compression algorithm */
1007 #ifdef OPENSSL_NO_COMP
1010 al
=SSL_AD_ILLEGAL_PARAMETER
;
1011 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
1014 /* If compression is disabled we'd better not try to resume a session
1015 * using compression.
1017 if (s
->session
->compress_meth
!= 0)
1019 al
=SSL_AD_INTERNAL_ERROR
;
1020 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_INCONSISTENT_COMPRESSION
);
1025 if (s
->hit
&& j
!= s
->session
->compress_meth
)
1027 al
=SSL_AD_ILLEGAL_PARAMETER
;
1028 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED
);
1033 else if (s
->options
& SSL_OP_NO_COMPRESSION
)
1035 al
=SSL_AD_ILLEGAL_PARAMETER
;
1036 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_COMPRESSION_DISABLED
);
1040 comp
=ssl3_comp_find(s
->ctx
->comp_methods
,j
);
1042 if ((j
!= 0) && (comp
== NULL
))
1044 al
=SSL_AD_ILLEGAL_PARAMETER
;
1045 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
1050 s
->s3
->tmp
.new_compression
=comp
;
1054 #ifndef OPENSSL_NO_TLSEXT
1056 if (s
->version
>= SSL3_VERSION
)
1058 if (!ssl_parse_serverhello_tlsext(s
,&p
,d
,n
, &al
))
1060 /* 'al' set by ssl_parse_serverhello_tlsext */
1061 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_PARSE_TLSEXT
);
1064 if (ssl_check_serverhello_tlsext(s
) <= 0)
1066 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_SERVERHELLO_TLSEXT
);
1074 /* wrong packet length */
1075 al
=SSL_AD_DECODE_ERROR
;
1076 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_PACKET_LENGTH
);
1082 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1087 int ssl3_get_server_certificate(SSL
*s
)
1089 int al
,i
,ok
,ret
= -1;
1090 unsigned long n
,nc
,llen
,l
;
1092 const unsigned char *q
,*p
;
1094 STACK_OF(X509
) *sk
=NULL
;
1096 EVP_PKEY
*pkey
=NULL
;
1097 int need_cert
= 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1099 n
=s
->method
->ssl_get_message(s
,
1106 if (!ok
) return((int)n
);
1108 if ((s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_KEY_EXCHANGE
) ||
1109 ((s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aKRB5
) &&
1110 (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_DONE
)))
1112 s
->s3
->tmp
.reuse_message
=1;
1116 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE
)
1118 al
=SSL_AD_UNEXPECTED_MESSAGE
;
1119 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_BAD_MESSAGE_TYPE
);
1122 p
=d
=(unsigned char *)s
->init_msg
;
1124 if ((sk
=sk_X509_new_null()) == NULL
)
1126 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
1133 al
=SSL_AD_DECODE_ERROR
;
1134 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_LENGTH_MISMATCH
);
1137 for (nc
=0; nc
<llen
; )
1140 if ((l
+nc
+3) > llen
)
1142 al
=SSL_AD_DECODE_ERROR
;
1143 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
1148 x
=d2i_X509(NULL
,&q
,l
);
1151 al
=SSL_AD_BAD_CERTIFICATE
;
1152 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_ASN1_LIB
);
1157 al
=SSL_AD_DECODE_ERROR
;
1158 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
1161 if (!sk_X509_push(sk
,x
))
1163 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
1171 i
=ssl_verify_cert_chain(s
,sk
);
1172 if ((s
->verify_mode
!= SSL_VERIFY_NONE
) && (i
<= 0)
1173 #ifndef OPENSSL_NO_KRB5
1174 && !((s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kKRB5
) &&
1175 (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aKRB5
))
1176 #endif /* OPENSSL_NO_KRB5 */
1179 al
=ssl_verify_alarm_type(s
->verify_result
);
1180 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERTIFICATE_VERIFY_FAILED
);
1183 ERR_clear_error(); /* but we keep s->verify_result */
1185 sc
=ssl_sess_cert_new();
1186 if (sc
== NULL
) goto err
;
1188 if (s
->session
->sess_cert
) ssl_sess_cert_free(s
->session
->sess_cert
);
1189 s
->session
->sess_cert
=sc
;
1192 /* Inconsistency alert: cert_chain does include the peer's
1193 * certificate, which we don't include in s3_srvr.c */
1194 x
=sk_X509_value(sk
,0);
1196 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1198 pkey
=X509_get_pubkey(x
);
1200 /* VRS: allow null cert if auth == KRB5 */
1201 need_cert
= ((s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kKRB5
) &&
1202 (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aKRB5
))
1206 printf("pkey,x = %p, %p\n", pkey
,x
);
1207 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x
,pkey
));
1208 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s
->s3
->tmp
.new_cipher
->name
,
1209 s
->s3
->tmp
.new_cipher
->algorithm_mkey
, s
->s3
->tmp
.new_cipher
->algorithm_auth
, need_cert
);
1210 #endif /* KSSL_DEBUG */
1212 if (need_cert
&& ((pkey
== NULL
) || EVP_PKEY_missing_parameters(pkey
)))
1216 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
1217 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS
);
1221 i
=ssl_cert_type(x
,pkey
);
1222 if (need_cert
&& i
< 0)
1226 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
1227 SSL_R_UNKNOWN_CERTIFICATE_TYPE
);
1233 sc
->peer_cert_type
=i
;
1234 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
1235 /* Why would the following ever happen?
1236 * We just created sc a couple of lines ago. */
1237 if (sc
->peer_pkeys
[i
].x509
!= NULL
)
1238 X509_free(sc
->peer_pkeys
[i
].x509
);
1239 sc
->peer_pkeys
[i
].x509
=x
;
1240 sc
->peer_key
= &(sc
->peer_pkeys
[i
]);
1242 if (s
->session
->peer
!= NULL
)
1243 X509_free(s
->session
->peer
);
1244 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
1249 sc
->peer_cert_type
=i
;
1252 if (s
->session
->peer
!= NULL
)
1253 X509_free(s
->session
->peer
);
1254 s
->session
->peer
=NULL
;
1256 s
->session
->verify_result
= s
->verify_result
;
1264 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1267 EVP_PKEY_free(pkey
);
1269 sk_X509_pop_free(sk
,X509_free
);
1273 int ssl3_get_key_exchange(SSL
*s
)
1275 #ifndef OPENSSL_NO_RSA
1276 unsigned char *q
,md_buf
[EVP_MAX_MD_SIZE
*2];
1279 unsigned char *param
,*p
;
1280 int al
,i
,j
,param_len
,ok
;
1282 EVP_PKEY
*pkey
=NULL
;
1283 const EVP_MD
*md
= NULL
;
1284 #ifndef OPENSSL_NO_RSA
1287 #ifndef OPENSSL_NO_DH
1290 #ifndef OPENSSL_NO_ECDH
1291 EC_KEY
*ecdh
= NULL
;
1292 BN_CTX
*bn_ctx
= NULL
;
1293 EC_POINT
*srvr_ecpoint
= NULL
;
1295 int encoded_pt_len
= 0;
1298 /* use same message size as in ssl3_get_certificate_request()
1299 * as ServerKeyExchange message may be skipped */
1300 n
=s
->method
->ssl_get_message(s
,
1301 SSL3_ST_CR_KEY_EXCH_A
,
1302 SSL3_ST_CR_KEY_EXCH_B
,
1306 if (!ok
) return((int)n
);
1308 if (s
->s3
->tmp
.message_type
!= SSL3_MT_SERVER_KEY_EXCHANGE
)
1310 #ifndef OPENSSL_NO_PSK
1311 /* In plain PSK ciphersuite, ServerKeyExchange can be
1312 omitted if no identity hint is sent. Set
1313 session->sess_cert anyway to avoid problems
1315 if (s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kPSK
)
1317 s
->session
->sess_cert
=ssl_sess_cert_new();
1318 if (s
->ctx
->psk_identity_hint
)
1319 OPENSSL_free(s
->ctx
->psk_identity_hint
);
1320 s
->ctx
->psk_identity_hint
= NULL
;
1323 s
->s3
->tmp
.reuse_message
=1;
1327 param
=p
=(unsigned char *)s
->init_msg
;
1328 if (s
->session
->sess_cert
!= NULL
)
1330 #ifndef OPENSSL_NO_RSA
1331 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
1333 RSA_free(s
->session
->sess_cert
->peer_rsa_tmp
);
1334 s
->session
->sess_cert
->peer_rsa_tmp
=NULL
;
1337 #ifndef OPENSSL_NO_DH
1338 if (s
->session
->sess_cert
->peer_dh_tmp
)
1340 DH_free(s
->session
->sess_cert
->peer_dh_tmp
);
1341 s
->session
->sess_cert
->peer_dh_tmp
=NULL
;
1344 #ifndef OPENSSL_NO_ECDH
1345 if (s
->session
->sess_cert
->peer_ecdh_tmp
)
1347 EC_KEY_free(s
->session
->sess_cert
->peer_ecdh_tmp
);
1348 s
->session
->sess_cert
->peer_ecdh_tmp
=NULL
;
1354 s
->session
->sess_cert
=ssl_sess_cert_new();
1358 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
1359 alg_a
=s
->s3
->tmp
.new_cipher
->algorithm_auth
;
1360 EVP_MD_CTX_init(&md_ctx
);
1362 #ifndef OPENSSL_NO_PSK
1363 if (alg_k
& SSL_kPSK
)
1365 char tmp_id_hint
[PSK_MAX_IDENTITY_LEN
+1];
1367 al
=SSL_AD_HANDSHAKE_FAILURE
;
1370 /* Store PSK identity hint for later use, hint is used
1371 * in ssl3_send_client_key_exchange. Assume that the
1372 * maximum length of a PSK identity hint can be as
1373 * long as the maximum length of a PSK identity. */
1374 if (i
> PSK_MAX_IDENTITY_LEN
)
1376 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1377 SSL_R_DATA_LENGTH_TOO_LONG
);
1382 al
=SSL_AD_DECODE_ERROR
;
1383 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1384 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH
);
1387 /* If received PSK identity hint contains NULL
1388 * characters, the hint is truncated from the first
1389 * NULL. p may not be ending with NULL, so create a
1390 * NULL-terminated string. */
1391 memcpy(tmp_id_hint
, p
, i
);
1392 memset(tmp_id_hint
+i
, 0, PSK_MAX_IDENTITY_LEN
+1-i
);
1393 if (s
->ctx
->psk_identity_hint
!= NULL
)
1394 OPENSSL_free(s
->ctx
->psk_identity_hint
);
1395 s
->ctx
->psk_identity_hint
= BUF_strdup(tmp_id_hint
);
1396 if (s
->ctx
->psk_identity_hint
== NULL
)
1398 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
, ERR_R_MALLOC_FAILURE
);
1406 #endif /* !OPENSSL_NO_PSK */
1407 #ifndef OPENSSL_NO_SRP
1408 if (alg_k
& SSL_kSRP
)
1414 al
=SSL_AD_DECODE_ERROR
;
1415 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_N_LENGTH
);
1418 if (!(s
->srp_ctx
.N
=BN_bin2bn(p
,i
,NULL
)))
1420 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1429 al
=SSL_AD_DECODE_ERROR
;
1430 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_G_LENGTH
);
1433 if (!(s
->srp_ctx
.g
=BN_bin2bn(p
,i
,NULL
)))
1435 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1440 i
= (unsigned int)(p
[0]);
1445 al
=SSL_AD_DECODE_ERROR
;
1446 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_S_LENGTH
);
1449 if (!(s
->srp_ctx
.s
=BN_bin2bn(p
,i
,NULL
)))
1451 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1460 al
=SSL_AD_DECODE_ERROR
;
1461 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_B_LENGTH
);
1464 if (!(s
->srp_ctx
.B
=BN_bin2bn(p
,i
,NULL
)))
1466 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1472 if (!srp_verify_server_param(s
, &al
))
1474 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_PARAMETERS
);
1478 /* We must check if there is a certificate */
1479 #ifndef OPENSSL_NO_RSA
1480 if (alg_a
& SSL_aRSA
)
1481 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1486 #ifndef OPENSSL_NO_DSA
1487 else if (alg_a
& SSL_aDSS
)
1488 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_DSA_SIGN
].x509
);
1492 #endif /* !OPENSSL_NO_SRP */
1493 #ifndef OPENSSL_NO_RSA
1494 if (alg_k
& SSL_kRSA
)
1496 if ((rsa
=RSA_new()) == NULL
)
1498 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1505 al
=SSL_AD_DECODE_ERROR
;
1506 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_MODULUS_LENGTH
);
1509 if (!(rsa
->n
=BN_bin2bn(p
,i
,rsa
->n
)))
1511 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1520 al
=SSL_AD_DECODE_ERROR
;
1521 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_E_LENGTH
);
1524 if (!(rsa
->e
=BN_bin2bn(p
,i
,rsa
->e
)))
1526 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1532 /* this should be because we are using an export cipher */
1533 if (alg_a
& SSL_aRSA
)
1534 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1537 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1540 s
->session
->sess_cert
->peer_rsa_tmp
=rsa
;
1543 #else /* OPENSSL_NO_RSA */
1547 #ifndef OPENSSL_NO_DH
1548 else if (alg_k
& SSL_kEDH
)
1550 if ((dh
=DH_new()) == NULL
)
1552 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1559 al
=SSL_AD_DECODE_ERROR
;
1560 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_P_LENGTH
);
1563 if (!(dh
->p
=BN_bin2bn(p
,i
,NULL
)))
1565 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1574 al
=SSL_AD_DECODE_ERROR
;
1575 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_G_LENGTH
);
1578 if (!(dh
->g
=BN_bin2bn(p
,i
,NULL
)))
1580 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1589 al
=SSL_AD_DECODE_ERROR
;
1590 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_PUB_KEY_LENGTH
);
1593 if (!(dh
->pub_key
=BN_bin2bn(p
,i
,NULL
)))
1595 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1601 #ifndef OPENSSL_NO_RSA
1602 if (alg_a
& SSL_aRSA
)
1603 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1608 #ifndef OPENSSL_NO_DSA
1609 else if (alg_a
& SSL_aDSS
)
1610 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_DSA_SIGN
].x509
);
1612 /* else anonymous DH, so no certificate or pkey. */
1614 s
->session
->sess_cert
->peer_dh_tmp
=dh
;
1617 else if ((alg_k
& SSL_kDHr
) || (alg_k
& SSL_kDHd
))
1619 al
=SSL_AD_ILLEGAL_PARAMETER
;
1620 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER
);
1623 #endif /* !OPENSSL_NO_DH */
1625 #ifndef OPENSSL_NO_ECDH
1626 else if (alg_k
& SSL_kEECDH
)
1629 const EC_GROUP
*group
;
1631 if ((ecdh
=EC_KEY_new()) == NULL
)
1633 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1637 /* Extract elliptic curve parameters and the
1638 * server's ephemeral ECDH public key.
1639 * Keep accumulating lengths of various components in
1640 * param_len and make sure it never exceeds n.
1643 /* XXX: For now we only support named (not generic) curves
1644 * and the ECParameters in this case is just three bytes.
1647 if ((param_len
> n
) ||
1648 (*p
!= NAMED_CURVE_TYPE
) ||
1649 ((curve_nid
= tls1_ec_curve_id2nid(*(p
+ 2))) == 0))
1651 al
=SSL_AD_INTERNAL_ERROR
;
1652 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS
);
1656 ngroup
= EC_GROUP_new_by_curve_name(curve_nid
);
1659 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_EC_LIB
);
1662 if (EC_KEY_set_group(ecdh
, ngroup
) == 0)
1664 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_EC_LIB
);
1667 EC_GROUP_free(ngroup
);
1669 group
= EC_KEY_get0_group(ecdh
);
1671 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) &&
1672 (EC_GROUP_get_degree(group
) > 163))
1674 al
=SSL_AD_EXPORT_RESTRICTION
;
1675 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER
);
1681 /* Next, get the encoded ECPoint */
1682 if (((srvr_ecpoint
= EC_POINT_new(group
)) == NULL
) ||
1683 ((bn_ctx
= BN_CTX_new()) == NULL
))
1685 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1689 encoded_pt_len
= *p
; /* length of encoded point */
1691 param_len
+= (1 + encoded_pt_len
);
1692 if ((param_len
> n
) ||
1693 (EC_POINT_oct2point(group
, srvr_ecpoint
,
1694 p
, encoded_pt_len
, bn_ctx
) == 0))
1696 al
=SSL_AD_DECODE_ERROR
;
1697 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_ECPOINT
);
1704 /* The ECC/TLS specification does not mention
1705 * the use of DSA to sign ECParameters in the server
1706 * key exchange message. We do support RSA and ECDSA.
1709 #ifndef OPENSSL_NO_RSA
1710 else if (alg_a
& SSL_aRSA
)
1711 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1713 #ifndef OPENSSL_NO_ECDSA
1714 else if (alg_a
& SSL_aECDSA
)
1715 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_ECC
].x509
);
1717 /* else anonymous ECDH, so no certificate or pkey. */
1718 EC_KEY_set_public_key(ecdh
, srvr_ecpoint
);
1719 s
->session
->sess_cert
->peer_ecdh_tmp
=ecdh
;
1721 BN_CTX_free(bn_ctx
);
1723 EC_POINT_free(srvr_ecpoint
);
1724 srvr_ecpoint
= NULL
;
1728 al
=SSL_AD_UNEXPECTED_MESSAGE
;
1729 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNEXPECTED_MESSAGE
);
1732 #endif /* !OPENSSL_NO_ECDH */
1735 /* p points to the next byte, there are 'n' bytes left */
1737 /* if it was signed, check the signature */
1740 if (TLS1_get_version(s
) >= TLS1_2_VERSION
)
1742 int sigalg
= tls12_get_sigid(pkey
);
1743 /* Should never happen */
1746 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1749 /* Check key type is consistent with signature */
1750 if (sigalg
!= (int)p
[1])
1752 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_WRONG_SIGNATURE_TYPE
);
1753 al
=SSL_AD_DECODE_ERROR
;
1756 md
= tls12_get_hash(p
[0]);
1759 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNKNOWN_DIGEST
);
1760 al
=SSL_AD_DECODE_ERROR
;
1764 fprintf(stderr
, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md
));
1774 j
=EVP_PKEY_size(pkey
);
1776 if ((i
!= n
) || (n
> j
) || (n
<= 0))
1778 /* wrong packet length */
1779 al
=SSL_AD_DECODE_ERROR
;
1780 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_WRONG_SIGNATURE_LENGTH
);
1784 #ifndef OPENSSL_NO_RSA
1785 if (pkey
->type
== EVP_PKEY_RSA
&& TLS1_get_version(s
) < TLS1_2_VERSION
)
1791 for (num
=2; num
> 0; num
--)
1793 EVP_MD_CTX_set_flags(&md_ctx
,
1794 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW
);
1795 EVP_DigestInit_ex(&md_ctx
,(num
== 2)
1796 ?s
->ctx
->md5
:s
->ctx
->sha1
, NULL
);
1797 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1798 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1799 EVP_DigestUpdate(&md_ctx
,param
,param_len
);
1800 EVP_DigestFinal_ex(&md_ctx
,q
,(unsigned int *)&i
);
1804 i
=RSA_verify(NID_md5_sha1
, md_buf
, j
, p
, n
,
1808 al
=SSL_AD_DECRYPT_ERROR
;
1809 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_DECRYPT
);
1815 al
=SSL_AD_DECRYPT_ERROR
;
1816 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1823 EVP_VerifyInit_ex(&md_ctx
, md
, NULL
);
1824 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1825 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1826 EVP_VerifyUpdate(&md_ctx
,param
,param_len
);
1827 if (EVP_VerifyFinal(&md_ctx
,p
,(int)n
,pkey
) <= 0)
1830 al
=SSL_AD_DECRYPT_ERROR
;
1831 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1838 if (!(alg_a
& SSL_aNULL
) && !(alg_k
& SSL_kPSK
))
1839 /* aNULL or kPSK do not need public keys */
1841 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1844 /* still data left over */
1847 al
=SSL_AD_DECODE_ERROR
;
1848 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_EXTRA_DATA_IN_MESSAGE
);
1852 EVP_PKEY_free(pkey
);
1853 EVP_MD_CTX_cleanup(&md_ctx
);
1856 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1858 EVP_PKEY_free(pkey
);
1859 #ifndef OPENSSL_NO_RSA
1863 #ifndef OPENSSL_NO_DH
1867 #ifndef OPENSSL_NO_ECDH
1868 BN_CTX_free(bn_ctx
);
1869 EC_POINT_free(srvr_ecpoint
);
1873 EVP_MD_CTX_cleanup(&md_ctx
);
1877 int ssl3_get_certificate_request(SSL
*s
)
1880 unsigned long n
,nc
,l
;
1881 unsigned int llen
, ctype_num
,i
;
1883 const unsigned char *p
,*q
;
1885 STACK_OF(X509_NAME
) *ca_sk
=NULL
;
1887 n
=s
->method
->ssl_get_message(s
,
1888 SSL3_ST_CR_CERT_REQ_A
,
1889 SSL3_ST_CR_CERT_REQ_B
,
1894 if (!ok
) return((int)n
);
1896 s
->s3
->tmp
.cert_req
=0;
1898 if (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_DONE
)
1900 s
->s3
->tmp
.reuse_message
=1;
1901 /* If we get here we don't need any cached handshake records
1902 * as we wont be doing client auth.
1904 if (s
->s3
->handshake_buffer
)
1906 if (!ssl3_digest_cached_records(s
))
1912 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE_REQUEST
)
1914 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
1915 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_WRONG_MESSAGE_TYPE
);
1919 /* TLS does not like anon-DH with client cert */
1920 if (s
->version
> SSL3_VERSION
)
1922 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aNULL
)
1924 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
1925 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER
);
1930 p
=d
=(unsigned char *)s
->init_msg
;
1932 if ((ca_sk
=sk_X509_NAME_new(ca_dn_cmp
)) == NULL
)
1934 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
1938 /* get the certificate types */
1940 if (ctype_num
> SSL3_CT_NUMBER
)
1941 ctype_num
=SSL3_CT_NUMBER
;
1942 for (i
=0; i
<ctype_num
; i
++)
1943 s
->s3
->tmp
.ctype
[i
]= p
[i
];
1945 if (TLS1_get_version(s
) >= TLS1_2_VERSION
)
1948 /* Check we have enough room for signature algorithms and
1949 * following length value.
1951 if ((unsigned long)(p
- d
+ llen
+ 2) > n
)
1953 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1954 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_DATA_LENGTH_TOO_LONG
);
1957 if ((llen
& 1) || !tls1_process_sigalgs(s
, p
, llen
))
1959 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1960 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_SIGNATURE_ALGORITHMS_ERROR
);
1966 /* get the CA RDNs */
1971 out
=fopen("/tmp/vsign.der","w");
1972 fwrite(p
,1,llen
,out
);
1977 if ((unsigned long)(p
- d
+ llen
) != n
)
1979 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1980 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_LENGTH_MISMATCH
);
1984 for (nc
=0; nc
<llen
; )
1987 if ((l
+nc
+2) > llen
)
1989 if ((s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
))
1990 goto cont
; /* netscape bugs */
1991 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1992 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_TOO_LONG
);
1998 if ((xn
=d2i_X509_NAME(NULL
,&q
,l
)) == NULL
)
2000 /* If netscape tolerance is on, ignore errors */
2001 if (s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
)
2005 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2006 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_ASN1_LIB
);
2013 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2014 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_LENGTH_MISMATCH
);
2017 if (!sk_X509_NAME_push(ca_sk
,xn
))
2019 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
2033 /* we should setup a certificate to return.... */
2034 s
->s3
->tmp
.cert_req
=1;
2035 s
->s3
->tmp
.ctype_num
=ctype_num
;
2036 if (s
->s3
->tmp
.ca_names
!= NULL
)
2037 sk_X509_NAME_pop_free(s
->s3
->tmp
.ca_names
,X509_NAME_free
);
2038 s
->s3
->tmp
.ca_names
=ca_sk
;
2043 if (ca_sk
!= NULL
) sk_X509_NAME_pop_free(ca_sk
,X509_NAME_free
);
2047 static int ca_dn_cmp(const X509_NAME
* const *a
, const X509_NAME
* const *b
)
2049 return(X509_NAME_cmp(*a
,*b
));
2051 #ifndef OPENSSL_NO_TLSEXT
2052 int ssl3_get_new_session_ticket(SSL
*s
)
2054 int ok
,al
,ret
=0, ticklen
;
2056 const unsigned char *p
;
2059 n
=s
->method
->ssl_get_message(s
,
2060 SSL3_ST_CR_SESSION_TICKET_A
,
2061 SSL3_ST_CR_SESSION_TICKET_B
,
2069 if (s
->s3
->tmp
.message_type
== SSL3_MT_FINISHED
)
2071 s
->s3
->tmp
.reuse_message
=1;
2074 if (s
->s3
->tmp
.message_type
!= SSL3_MT_NEWSESSION_TICKET
)
2076 al
=SSL_AD_UNEXPECTED_MESSAGE
;
2077 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_BAD_MESSAGE_TYPE
);
2082 /* need at least ticket_lifetime_hint + ticket length */
2083 al
= SSL_AD_DECODE_ERROR
;
2084 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_LENGTH_MISMATCH
);
2088 p
=d
=(unsigned char *)s
->init_msg
;
2089 n2l(p
, s
->session
->tlsext_tick_lifetime_hint
);
2091 /* ticket_lifetime_hint + ticket_length + ticket */
2092 if (ticklen
+ 6 != n
)
2094 al
= SSL_AD_DECODE_ERROR
;
2095 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_LENGTH_MISMATCH
);
2098 if (s
->session
->tlsext_tick
)
2100 OPENSSL_free(s
->session
->tlsext_tick
);
2101 s
->session
->tlsext_ticklen
= 0;
2103 s
->session
->tlsext_tick
= OPENSSL_malloc(ticklen
);
2104 if (!s
->session
->tlsext_tick
)
2106 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,ERR_R_MALLOC_FAILURE
);
2109 memcpy(s
->session
->tlsext_tick
, p
, ticklen
);
2110 s
->session
->tlsext_ticklen
= ticklen
;
2111 /* There are two ways to detect a resumed ticket sesion.
2112 * One is to set an appropriate session ID and then the server
2113 * must return a match in ServerHello. This allows the normal
2114 * client session ID matching to work and we know much
2115 * earlier that the ticket has been accepted.
2117 * The other way is to set zero length session ID when the
2118 * ticket is presented and rely on the handshake to determine
2119 * session resumption.
2121 * We choose the former approach because this fits in with
2122 * assumptions elsewhere in OpenSSL. The session ID is set
2123 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2126 EVP_Digest(p
, ticklen
,
2127 s
->session
->session_id
, &s
->session
->session_id_length
,
2128 #ifndef OPENSSL_NO_SHA256
2129 EVP_sha256(), NULL
);
2136 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
2141 int ssl3_get_cert_status(SSL
*s
)
2144 unsigned long resplen
,n
;
2145 const unsigned char *p
;
2147 n
=s
->method
->ssl_get_message(s
,
2148 SSL3_ST_CR_CERT_STATUS_A
,
2149 SSL3_ST_CR_CERT_STATUS_B
,
2150 SSL3_MT_CERTIFICATE_STATUS
,
2154 if (!ok
) return((int)n
);
2157 /* need at least status type + length */
2158 al
= SSL_AD_DECODE_ERROR
;
2159 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_LENGTH_MISMATCH
);
2162 p
= (unsigned char *)s
->init_msg
;
2163 if (*p
++ != TLSEXT_STATUSTYPE_ocsp
)
2165 al
= SSL_AD_DECODE_ERROR
;
2166 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_UNSUPPORTED_STATUS_TYPE
);
2170 if (resplen
+ 4 != n
)
2172 al
= SSL_AD_DECODE_ERROR
;
2173 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_LENGTH_MISMATCH
);
2176 if (s
->tlsext_ocsp_resp
)
2177 OPENSSL_free(s
->tlsext_ocsp_resp
);
2178 s
->tlsext_ocsp_resp
= BUF_memdup(p
, resplen
);
2179 if (!s
->tlsext_ocsp_resp
)
2181 al
= SSL_AD_INTERNAL_ERROR
;
2182 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,ERR_R_MALLOC_FAILURE
);
2185 s
->tlsext_ocsp_resplen
= resplen
;
2186 if (s
->ctx
->tlsext_status_cb
)
2189 ret
= s
->ctx
->tlsext_status_cb(s
, s
->ctx
->tlsext_status_arg
);
2192 al
= SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE
;
2193 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_INVALID_STATUS_RESPONSE
);
2198 al
= SSL_AD_INTERNAL_ERROR
;
2199 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,ERR_R_MALLOC_FAILURE
);
2205 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
2210 int ssl3_get_server_done(SSL
*s
)
2215 n
=s
->method
->ssl_get_message(s
,
2216 SSL3_ST_CR_SRVR_DONE_A
,
2217 SSL3_ST_CR_SRVR_DONE_B
,
2218 SSL3_MT_SERVER_DONE
,
2219 30, /* should be very small, like 0 :-) */
2222 if (!ok
) return((int)n
);
2225 /* should contain no data */
2226 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2227 SSLerr(SSL_F_SSL3_GET_SERVER_DONE
,SSL_R_LENGTH_MISMATCH
);
2235 int ssl3_send_client_key_exchange(SSL
*s
)
2237 unsigned char *p
,*d
;
2239 unsigned long alg_k
;
2240 #ifndef OPENSSL_NO_RSA
2242 EVP_PKEY
*pkey
=NULL
;
2244 #ifndef OPENSSL_NO_KRB5
2246 #endif /* OPENSSL_NO_KRB5 */
2247 #ifndef OPENSSL_NO_ECDH
2248 EC_KEY
*clnt_ecdh
= NULL
;
2249 const EC_POINT
*srvr_ecpoint
= NULL
;
2250 EVP_PKEY
*srvr_pub_pkey
= NULL
;
2251 unsigned char *encodedPoint
= NULL
;
2252 int encoded_pt_len
= 0;
2253 BN_CTX
* bn_ctx
= NULL
;
2256 if (s
->state
== SSL3_ST_CW_KEY_EXCH_A
)
2258 d
=(unsigned char *)s
->init_buf
->data
;
2261 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
2263 /* Fool emacs indentation */
2265 #ifndef OPENSSL_NO_RSA
2266 else if (alg_k
& SSL_kRSA
)
2269 unsigned char tmp_buf
[SSL_MAX_MASTER_KEY_LENGTH
];
2271 if (s
->session
->sess_cert
== NULL
)
2273 /* We should always have a server certificate with SSL_kRSA. */
2274 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
2278 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
2279 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
2282 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
2283 if ((pkey
== NULL
) ||
2284 (pkey
->type
!= EVP_PKEY_RSA
) ||
2285 (pkey
->pkey
.rsa
== NULL
))
2287 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
2291 EVP_PKEY_free(pkey
);
2294 tmp_buf
[0]=s
->client_version
>>8;
2295 tmp_buf
[1]=s
->client_version
&0xff;
2296 if (RAND_bytes(&(tmp_buf
[2]),sizeof tmp_buf
-2) <= 0)
2299 s
->session
->master_key_length
=sizeof tmp_buf
;
2302 /* Fix buf for TLS and beyond */
2303 if (s
->version
> SSL3_VERSION
)
2305 n
=RSA_public_encrypt(sizeof tmp_buf
,
2306 tmp_buf
,p
,rsa
,RSA_PKCS1_PADDING
);
2308 if (s
->options
& SSL_OP_PKCS1_CHECK_1
) p
[1]++;
2309 if (s
->options
& SSL_OP_PKCS1_CHECK_2
) tmp_buf
[0]=0x70;
2313 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_BAD_RSA_ENCRYPT
);
2317 /* Fix buf for TLS and beyond */
2318 if (s
->version
> SSL3_VERSION
)
2324 s
->session
->master_key_length
=
2325 s
->method
->ssl3_enc
->generate_master_secret(s
,
2326 s
->session
->master_key
,
2327 tmp_buf
,sizeof tmp_buf
);
2328 OPENSSL_cleanse(tmp_buf
,sizeof tmp_buf
);
2331 #ifndef OPENSSL_NO_KRB5
2332 else if (alg_k
& SSL_kKRB5
)
2334 krb5_error_code krb5rc
;
2335 KSSL_CTX
*kssl_ctx
= s
->kssl_ctx
;
2336 /* krb5_data krb5_ap_req; */
2337 krb5_data
*enc_ticket
;
2338 krb5_data authenticator
, *authp
= NULL
;
2339 EVP_CIPHER_CTX ciph_ctx
;
2340 const EVP_CIPHER
*enc
= NULL
;
2341 unsigned char iv
[EVP_MAX_IV_LENGTH
];
2342 unsigned char tmp_buf
[SSL_MAX_MASTER_KEY_LENGTH
];
2343 unsigned char epms
[SSL_MAX_MASTER_KEY_LENGTH
2344 + EVP_MAX_IV_LENGTH
];
2345 int padl
, outl
= sizeof(epms
);
2347 EVP_CIPHER_CTX_init(&ciph_ctx
);
2350 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2352 #endif /* KSSL_DEBUG */
2356 if (KRB5SENDAUTH
) authp
= &authenticator
;
2357 #endif /* KRB5SENDAUTH */
2359 krb5rc
= kssl_cget_tkt(kssl_ctx
, &enc_ticket
, authp
,
2361 enc
= kssl_map_enc(kssl_ctx
->enctype
);
2366 printf("kssl_cget_tkt rtn %d\n", krb5rc
);
2367 if (krb5rc
&& kssl_err
.text
)
2368 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err
.text
);
2370 #endif /* KSSL_DEBUG */
2374 ssl3_send_alert(s
,SSL3_AL_FATAL
,
2375 SSL_AD_HANDSHAKE_FAILURE
);
2376 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2381 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2382 ** in place of RFC 2712 KerberosWrapper, as in:
2384 ** Send ticket (copy to *p, set n = length)
2385 ** n = krb5_ap_req.length;
2386 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2387 ** if (krb5_ap_req.data)
2388 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2390 ** Now using real RFC 2712 KerberosWrapper
2391 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2392 ** Note: 2712 "opaque" types are here replaced
2393 ** with a 2-byte length followed by the value.
2395 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2396 ** Where "xx xx" = length bytes. Shown here with
2397 ** optional authenticator omitted.
2400 /* KerberosWrapper.Ticket */
2401 s2n(enc_ticket
->length
,p
);
2402 memcpy(p
, enc_ticket
->data
, enc_ticket
->length
);
2403 p
+= enc_ticket
->length
;
2404 n
= enc_ticket
->length
+ 2;
2406 /* KerberosWrapper.Authenticator */
2407 if (authp
&& authp
->length
)
2409 s2n(authp
->length
,p
);
2410 memcpy(p
, authp
->data
, authp
->length
);
2412 n
+= authp
->length
+ 2;
2420 s2n(0,p
);/* null authenticator length */
2424 tmp_buf
[0]=s
->client_version
>>8;
2425 tmp_buf
[1]=s
->client_version
&0xff;
2426 if (RAND_bytes(&(tmp_buf
[2]),sizeof tmp_buf
-2) <= 0)
2429 /* 20010420 VRS. Tried it this way; failed.
2430 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2431 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2432 ** kssl_ctx->length);
2433 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2436 memset(iv
, 0, sizeof iv
); /* per RFC 1510 */
2437 EVP_EncryptInit_ex(&ciph_ctx
,enc
, NULL
,
2439 EVP_EncryptUpdate(&ciph_ctx
,epms
,&outl
,tmp_buf
,
2441 EVP_EncryptFinal_ex(&ciph_ctx
,&(epms
[outl
]),&padl
);
2443 if (outl
> (int)sizeof epms
)
2445 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
2448 EVP_CIPHER_CTX_cleanup(&ciph_ctx
);
2450 /* KerberosWrapper.EncryptedPreMasterSecret */
2452 memcpy(p
, epms
, outl
);
2456 s
->session
->master_key_length
=
2457 s
->method
->ssl3_enc
->generate_master_secret(s
,
2458 s
->session
->master_key
,
2459 tmp_buf
, sizeof tmp_buf
);
2461 OPENSSL_cleanse(tmp_buf
, sizeof tmp_buf
);
2462 OPENSSL_cleanse(epms
, outl
);
2465 #ifndef OPENSSL_NO_DH
2466 else if (alg_k
& (SSL_kEDH
|SSL_kDHr
|SSL_kDHd
))
2468 DH
*dh_srvr
,*dh_clnt
;
2470 if (s
->session
->sess_cert
== NULL
)
2472 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
2473 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_UNEXPECTED_MESSAGE
);
2477 if (s
->session
->sess_cert
->peer_dh_tmp
!= NULL
)
2478 dh_srvr
=s
->session
->sess_cert
->peer_dh_tmp
;
2481 /* we get them from the cert */
2482 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_HANDSHAKE_FAILURE
);
2483 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS
);
2487 /* generate a new random key */
2488 if ((dh_clnt
=DHparams_dup(dh_srvr
)) == NULL
)
2490 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2493 if (!DH_generate_key(dh_clnt
))
2495 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2500 /* use the 'p' output buffer for the DH key, but
2501 * make sure to clear it out afterwards */
2503 n
=DH_compute_key(p
,dh_srvr
->pub_key
,dh_clnt
);
2507 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2512 /* generate master key from the result */
2513 s
->session
->master_key_length
=
2514 s
->method
->ssl3_enc
->generate_master_secret(s
,
2515 s
->session
->master_key
,p
,n
);
2519 /* send off the data */
2520 n
=BN_num_bytes(dh_clnt
->pub_key
);
2522 BN_bn2bin(dh_clnt
->pub_key
,p
);
2527 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2531 #ifndef OPENSSL_NO_ECDH
2532 else if (alg_k
& (SSL_kEECDH
|SSL_kECDHr
|SSL_kECDHe
))
2534 const EC_GROUP
*srvr_group
= NULL
;
2536 int ecdh_clnt_cert
= 0;
2539 if (s
->session
->sess_cert
== NULL
)
2541 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
2542 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_UNEXPECTED_MESSAGE
);
2546 /* Did we send out the client's
2547 * ECDH share for use in premaster
2548 * computation as part of client certificate?
2549 * If so, set ecdh_clnt_cert to 1.
2551 if ((alg_k
& (SSL_kECDHr
|SSL_kECDHe
)) && (s
->cert
!= NULL
))
2553 /* XXX: For now, we do not support client
2554 * authentication using ECDH certificates.
2555 * To add such support, one needs to add
2556 * code that checks for appropriate
2557 * conditions and sets ecdh_clnt_cert to 1.
2558 * For example, the cert have an ECC
2559 * key on the same curve as the server's
2560 * and the key should be authorized for
2563 * One also needs to add code in ssl3_connect
2564 * to skip sending the certificate verify
2567 * if ((s->cert->key->privatekey != NULL) &&
2568 * (s->cert->key->privatekey->type ==
2569 * EVP_PKEY_EC) && ...)
2570 * ecdh_clnt_cert = 1;
2574 if (s
->session
->sess_cert
->peer_ecdh_tmp
!= NULL
)
2576 tkey
= s
->session
->sess_cert
->peer_ecdh_tmp
;
2580 /* Get the Server Public Key from Cert */
2581 srvr_pub_pkey
= X509_get_pubkey(s
->session
-> \
2582 sess_cert
->peer_pkeys
[SSL_PKEY_ECC
].x509
);
2583 if ((srvr_pub_pkey
== NULL
) ||
2584 (srvr_pub_pkey
->type
!= EVP_PKEY_EC
) ||
2585 (srvr_pub_pkey
->pkey
.ec
== NULL
))
2587 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2588 ERR_R_INTERNAL_ERROR
);
2592 tkey
= srvr_pub_pkey
->pkey
.ec
;
2595 srvr_group
= EC_KEY_get0_group(tkey
);
2596 srvr_ecpoint
= EC_KEY_get0_public_key(tkey
);
2598 if ((srvr_group
== NULL
) || (srvr_ecpoint
== NULL
))
2600 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2601 ERR_R_INTERNAL_ERROR
);
2605 if ((clnt_ecdh
=EC_KEY_new()) == NULL
)
2607 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2611 if (!EC_KEY_set_group(clnt_ecdh
, srvr_group
))
2613 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_EC_LIB
);
2618 /* Reuse key info from our certificate
2619 * We only need our private key to perform
2620 * the ECDH computation.
2622 const BIGNUM
*priv_key
;
2623 tkey
= s
->cert
->key
->privatekey
->pkey
.ec
;
2624 priv_key
= EC_KEY_get0_private_key(tkey
);
2625 if (priv_key
== NULL
)
2627 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2630 if (!EC_KEY_set_private_key(clnt_ecdh
, priv_key
))
2632 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_EC_LIB
);
2638 /* Generate a new ECDH key pair */
2639 if (!(EC_KEY_generate_key(clnt_ecdh
)))
2641 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
, ERR_R_ECDH_LIB
);
2646 /* use the 'p' output buffer for the ECDH key, but
2647 * make sure to clear it out afterwards
2650 field_size
= EC_GROUP_get_degree(srvr_group
);
2651 if (field_size
<= 0)
2653 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2657 n
=ECDH_compute_key(p
, (field_size
+7)/8, srvr_ecpoint
, clnt_ecdh
, NULL
);
2660 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2665 /* generate master key from the result */
2666 s
->session
->master_key_length
= s
->method
->ssl3_enc \
2667 -> generate_master_secret(s
,
2668 s
->session
->master_key
,
2671 memset(p
, 0, n
); /* clean up */
2675 /* Send empty client key exch message */
2680 /* First check the size of encoding and
2681 * allocate memory accordingly.
2684 EC_POINT_point2oct(srvr_group
,
2685 EC_KEY_get0_public_key(clnt_ecdh
),
2686 POINT_CONVERSION_UNCOMPRESSED
,
2689 encodedPoint
= (unsigned char *)
2690 OPENSSL_malloc(encoded_pt_len
*
2691 sizeof(unsigned char));
2692 bn_ctx
= BN_CTX_new();
2693 if ((encodedPoint
== NULL
) ||
2696 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2700 /* Encode the public key */
2701 n
= EC_POINT_point2oct(srvr_group
,
2702 EC_KEY_get0_public_key(clnt_ecdh
),
2703 POINT_CONVERSION_UNCOMPRESSED
,
2704 encodedPoint
, encoded_pt_len
, bn_ctx
);
2706 *p
= n
; /* length of encoded point */
2707 /* Encoded point will be copied here */
2709 /* copy the point */
2710 memcpy((unsigned char *)p
, encodedPoint
, n
);
2711 /* increment n to account for length field */
2715 /* Free allocated memory */
2716 BN_CTX_free(bn_ctx
);
2717 if (encodedPoint
!= NULL
) OPENSSL_free(encodedPoint
);
2718 if (clnt_ecdh
!= NULL
)
2719 EC_KEY_free(clnt_ecdh
);
2720 EVP_PKEY_free(srvr_pub_pkey
);
2722 #endif /* !OPENSSL_NO_ECDH */
2723 else if (alg_k
& SSL_kGOST
)
2725 /* GOST key exchange message creation */
2726 EVP_PKEY_CTX
*pkey_ctx
;
2729 unsigned int md_len
;
2731 unsigned char premaster_secret
[32],shared_ukm
[32], tmp
[256];
2732 EVP_MD_CTX
*ukm_hash
;
2735 /* Get server sertificate PKEY and create ctx from it */
2736 peer_cert
=s
->session
->sess_cert
->peer_pkeys
[(keytype
=SSL_PKEY_GOST01
)].x509
;
2738 peer_cert
=s
->session
->sess_cert
->peer_pkeys
[(keytype
=SSL_PKEY_GOST94
)].x509
;
2740 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER
);
2744 pkey_ctx
=EVP_PKEY_CTX_new(pub_key
=X509_get_pubkey(peer_cert
),NULL
);
2745 /* If we have send a certificate, and certificate key
2747 * parameters match those of server certificate, use
2748 * certificate key for key exchange
2751 /* Otherwise, generate ephemeral key pair */
2753 EVP_PKEY_encrypt_init(pkey_ctx
);
2754 /* Generate session key */
2755 RAND_bytes(premaster_secret
,32);
2756 /* If we have client certificate, use its secret as peer key */
2757 if (s
->s3
->tmp
.cert_req
&& s
->cert
->key
->privatekey
) {
2758 if (EVP_PKEY_derive_set_peer(pkey_ctx
,s
->cert
->key
->privatekey
) <=0) {
2759 /* If there was an error - just ignore it. Ephemeral key
2765 /* Compute shared IV and store it in algorithm-specific
2767 ukm_hash
= EVP_MD_CTX_create();
2768 EVP_DigestInit(ukm_hash
,EVP_get_digestbynid(NID_id_GostR3411_94
));
2769 EVP_DigestUpdate(ukm_hash
,s
->s3
->client_random
,SSL3_RANDOM_SIZE
);
2770 EVP_DigestUpdate(ukm_hash
,s
->s3
->server_random
,SSL3_RANDOM_SIZE
);
2771 EVP_DigestFinal_ex(ukm_hash
, shared_ukm
, &md_len
);
2772 EVP_MD_CTX_destroy(ukm_hash
);
2773 if (EVP_PKEY_CTX_ctrl(pkey_ctx
,-1,EVP_PKEY_OP_ENCRYPT
,EVP_PKEY_CTRL_SET_IV
,
2775 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2779 /* Make GOST keytransport blob message */
2780 /*Encapsulate it into sequence */
2781 *(p
++)=V_ASN1_SEQUENCE
| V_ASN1_CONSTRUCTED
;
2783 if (EVP_PKEY_encrypt(pkey_ctx
,tmp
,&msglen
,premaster_secret
,32)<0) {
2784 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2791 *(p
++)= msglen
& 0xff;
2796 *(p
++)= msglen
& 0xff;
2799 memcpy(p
, tmp
, msglen
);
2800 /* Check if pubkey from client certificate was used */
2801 if (EVP_PKEY_CTX_ctrl(pkey_ctx
, -1, -1, EVP_PKEY_CTRL_PEER_KEY
, 2, NULL
) > 0)
2803 /* Set flag "skip certificate verify" */
2804 s
->s3
->flags
|= TLS1_FLAGS_SKIP_CERT_VERIFY
;
2806 EVP_PKEY_CTX_free(pkey_ctx
);
2807 s
->session
->master_key_length
=
2808 s
->method
->ssl3_enc
->generate_master_secret(s
,
2809 s
->session
->master_key
,premaster_secret
,32);
2810 EVP_PKEY_free(pub_key
);
2813 #ifndef OPENSSL_NO_SRP
2814 else if (alg_k
& SSL_kSRP
)
2816 if (s
->srp_ctx
.A
!= NULL
)
2818 /* send off the data */
2819 n
=BN_num_bytes(s
->srp_ctx
.A
);
2821 BN_bn2bin(s
->srp_ctx
.A
,p
);
2826 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
2829 if (s
->session
->srp_username
!= NULL
)
2830 OPENSSL_free(s
->session
->srp_username
);
2831 s
->session
->srp_username
= BUF_strdup(s
->srp_ctx
.login
);
2832 if (s
->session
->srp_username
== NULL
)
2834 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2835 ERR_R_MALLOC_FAILURE
);
2839 if ((s
->session
->master_key_length
= SRP_generate_client_master_secret(s
,s
->session
->master_key
))<0)
2841 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
2846 #ifndef OPENSSL_NO_PSK
2847 else if (alg_k
& SSL_kPSK
)
2849 char identity
[PSK_MAX_IDENTITY_LEN
];
2850 unsigned char *t
= NULL
;
2851 unsigned char psk_or_pre_ms
[PSK_MAX_PSK_LEN
*2+4];
2852 unsigned int pre_ms_len
= 0, psk_len
= 0;
2856 if (s
->psk_client_callback
== NULL
)
2858 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2859 SSL_R_PSK_NO_CLIENT_CB
);
2863 psk_len
= s
->psk_client_callback(s
, s
->ctx
->psk_identity_hint
,
2864 identity
, PSK_MAX_IDENTITY_LEN
,
2865 psk_or_pre_ms
, sizeof(psk_or_pre_ms
));
2866 if (psk_len
> PSK_MAX_PSK_LEN
)
2868 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2869 ERR_R_INTERNAL_ERROR
);
2872 else if (psk_len
== 0)
2874 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2875 SSL_R_PSK_IDENTITY_NOT_FOUND
);
2879 /* create PSK pre_master_secret */
2880 pre_ms_len
= 2+psk_len
+2+psk_len
;
2882 memmove(psk_or_pre_ms
+psk_len
+4, psk_or_pre_ms
, psk_len
);
2884 memset(t
, 0, psk_len
);
2888 if (s
->session
->psk_identity_hint
!= NULL
)
2889 OPENSSL_free(s
->session
->psk_identity_hint
);
2890 s
->session
->psk_identity_hint
= BUF_strdup(s
->ctx
->psk_identity_hint
);
2891 if (s
->ctx
->psk_identity_hint
!= NULL
&&
2892 s
->session
->psk_identity_hint
== NULL
)
2894 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2895 ERR_R_MALLOC_FAILURE
);
2899 if (s
->session
->psk_identity
!= NULL
)
2900 OPENSSL_free(s
->session
->psk_identity
);
2901 s
->session
->psk_identity
= BUF_strdup(identity
);
2902 if (s
->session
->psk_identity
== NULL
)
2904 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2905 ERR_R_MALLOC_FAILURE
);
2909 s
->session
->master_key_length
=
2910 s
->method
->ssl3_enc
->generate_master_secret(s
,
2911 s
->session
->master_key
,
2912 psk_or_pre_ms
, pre_ms_len
);
2913 n
= strlen(identity
);
2915 memcpy(p
, identity
, n
);
2919 OPENSSL_cleanse(identity
, PSK_MAX_IDENTITY_LEN
);
2920 OPENSSL_cleanse(psk_or_pre_ms
, sizeof(psk_or_pre_ms
));
2923 ssl3_send_alert(s
, SSL3_AL_FATAL
, SSL_AD_HANDSHAKE_FAILURE
);
2930 ssl3_send_alert(s
, SSL3_AL_FATAL
,
2931 SSL_AD_HANDSHAKE_FAILURE
);
2932 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2933 ERR_R_INTERNAL_ERROR
);
2937 *(d
++)=SSL3_MT_CLIENT_KEY_EXCHANGE
;
2940 s
->state
=SSL3_ST_CW_KEY_EXCH_B
;
2941 /* number of bytes to write */
2946 /* SSL3_ST_CW_KEY_EXCH_B */
2947 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
2949 #ifndef OPENSSL_NO_ECDH
2950 BN_CTX_free(bn_ctx
);
2951 if (encodedPoint
!= NULL
) OPENSSL_free(encodedPoint
);
2952 if (clnt_ecdh
!= NULL
)
2953 EC_KEY_free(clnt_ecdh
);
2954 EVP_PKEY_free(srvr_pub_pkey
);
2959 int ssl3_send_client_verify(SSL
*s
)
2961 unsigned char *p
,*d
;
2962 unsigned char data
[MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
];
2964 EVP_PKEY_CTX
*pctx
=NULL
;
2970 EVP_MD_CTX_init(&mctx
);
2972 if (s
->state
== SSL3_ST_CW_CERT_VRFY_A
)
2974 d
=(unsigned char *)s
->init_buf
->data
;
2976 pkey
=s
->cert
->key
->privatekey
;
2977 /* Create context from key and test if sha1 is allowed as digest */
2978 pctx
= EVP_PKEY_CTX_new(pkey
,NULL
);
2979 EVP_PKEY_sign_init(pctx
);
2980 if (EVP_PKEY_CTX_set_signature_md(pctx
, EVP_sha1())>0)
2982 if (TLS1_get_version(s
) < TLS1_2_VERSION
)
2983 s
->method
->ssl3_enc
->cert_verify_mac(s
,
2985 &(data
[MD5_DIGEST_LENGTH
]));
2991 /* For TLS v1.2 send signature algorithm and signature
2992 * using agreed digest and cached handshake records.
2994 if (TLS1_get_version(s
) >= TLS1_2_VERSION
)
2998 const EVP_MD
*md
= s
->cert
->key
->digest
;
2999 hdatalen
= BIO_get_mem_data(s
->s3
->handshake_buffer
,
3001 if (hdatalen
<= 0 || !tls12_get_sigandhash(p
, pkey
, md
))
3003 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3004 ERR_R_INTERNAL_ERROR
);
3009 fprintf(stderr
, "Using TLS 1.2 with client alg %s\n",
3012 if (!EVP_SignInit_ex(&mctx
, md
, NULL
)
3013 || !EVP_SignUpdate(&mctx
, hdata
, hdatalen
)
3014 || !EVP_SignFinal(&mctx
, p
+ 2, &u
, pkey
))
3016 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3022 if (!ssl3_digest_cached_records(s
))
3026 #ifndef OPENSSL_NO_RSA
3027 if (pkey
->type
== EVP_PKEY_RSA
)
3029 s
->method
->ssl3_enc
->cert_verify_mac(s
,
3032 if (RSA_sign(NID_md5_sha1
, data
,
3033 MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
,
3034 &(p
[2]), &u
, pkey
->pkey
.rsa
) <= 0 )
3036 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_RSA_LIB
);
3044 #ifndef OPENSSL_NO_DSA
3045 if (pkey
->type
== EVP_PKEY_DSA
)
3047 if (!DSA_sign(pkey
->save_type
,
3048 &(data
[MD5_DIGEST_LENGTH
]),
3049 SHA_DIGEST_LENGTH
,&(p
[2]),
3050 (unsigned int *)&j
,pkey
->pkey
.dsa
))
3052 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_DSA_LIB
);
3060 #ifndef OPENSSL_NO_ECDSA
3061 if (pkey
->type
== EVP_PKEY_EC
)
3063 if (!ECDSA_sign(pkey
->save_type
,
3064 &(data
[MD5_DIGEST_LENGTH
]),
3065 SHA_DIGEST_LENGTH
,&(p
[2]),
3066 (unsigned int *)&j
,pkey
->pkey
.ec
))
3068 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3077 if (pkey
->type
== NID_id_GostR3410_94
|| pkey
->type
== NID_id_GostR3410_2001
)
3079 unsigned char signbuf
[64];
3082 s
->method
->ssl3_enc
->cert_verify_mac(s
,
3083 NID_id_GostR3411_94
,
3085 if (EVP_PKEY_sign(pctx
, signbuf
, &sigsize
, data
, 32) <= 0) {
3086 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3087 ERR_R_INTERNAL_ERROR
);
3090 for (i
=63,j
=0; i
>=0; j
++, i
--) {
3098 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_INTERNAL_ERROR
);
3101 *(d
++)=SSL3_MT_CERTIFICATE_VERIFY
;
3104 s
->state
=SSL3_ST_CW_CERT_VRFY_B
;
3105 s
->init_num
=(int)n
+4;
3108 EVP_MD_CTX_cleanup(&mctx
);
3109 EVP_PKEY_CTX_free(pctx
);
3110 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
3112 EVP_MD_CTX_cleanup(&mctx
);
3113 EVP_PKEY_CTX_free(pctx
);
3117 int ssl3_send_client_certificate(SSL
*s
)
3120 EVP_PKEY
*pkey
=NULL
;
3124 if (s
->state
== SSL3_ST_CW_CERT_A
)
3126 if ((s
->cert
== NULL
) ||
3127 (s
->cert
->key
->x509
== NULL
) ||
3128 (s
->cert
->key
->privatekey
== NULL
))
3129 s
->state
=SSL3_ST_CW_CERT_B
;
3131 s
->state
=SSL3_ST_CW_CERT_C
;
3134 /* We need to get a client cert */
3135 if (s
->state
== SSL3_ST_CW_CERT_B
)
3137 /* If we get an error, we need to
3138 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3139 * We then get retied later */
3141 i
= ssl_do_client_cert_cb(s
, &x509
, &pkey
);
3144 s
->rwstate
=SSL_X509_LOOKUP
;
3147 s
->rwstate
=SSL_NOTHING
;
3148 if ((i
== 1) && (pkey
!= NULL
) && (x509
!= NULL
))
3150 s
->state
=SSL3_ST_CW_CERT_B
;
3151 if ( !SSL_use_certificate(s
,x509
) ||
3152 !SSL_use_PrivateKey(s
,pkey
))
3158 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE
,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK
);
3161 if (x509
!= NULL
) X509_free(x509
);
3162 if (pkey
!= NULL
) EVP_PKEY_free(pkey
);
3165 if (s
->version
== SSL3_VERSION
)
3167 s
->s3
->tmp
.cert_req
=0;
3168 ssl3_send_alert(s
,SSL3_AL_WARNING
,SSL_AD_NO_CERTIFICATE
);
3173 s
->s3
->tmp
.cert_req
=2;
3177 /* Ok, we have a cert */
3178 s
->state
=SSL3_ST_CW_CERT_C
;
3181 if (s
->state
== SSL3_ST_CW_CERT_C
)
3183 s
->state
=SSL3_ST_CW_CERT_D
;
3184 l
=ssl3_output_cert_chain(s
,
3185 (s
->s3
->tmp
.cert_req
== 2)?NULL
:s
->cert
->key
->x509
);
3189 /* SSL3_ST_CW_CERT_D */
3190 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
3193 #define has_bits(i,m) (((i)&(m)) == (m))
3195 int ssl3_check_cert_and_algorithm(SSL
*s
)
3199 EVP_PKEY
*pkey
=NULL
;
3201 #ifndef OPENSSL_NO_RSA
3204 #ifndef OPENSSL_NO_DH
3208 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
3209 alg_a
=s
->s3
->tmp
.new_cipher
->algorithm_auth
;
3211 /* we don't have a certificate */
3212 if ((alg_a
& (SSL_aDH
|SSL_aNULL
|SSL_aKRB5
)) || (alg_k
& SSL_kPSK
))
3215 sc
=s
->session
->sess_cert
;
3218 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,ERR_R_INTERNAL_ERROR
);
3222 #ifndef OPENSSL_NO_RSA
3223 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
3225 #ifndef OPENSSL_NO_DH
3226 dh
=s
->session
->sess_cert
->peer_dh_tmp
;
3229 /* This is the passed certificate */
3231 idx
=sc
->peer_cert_type
;
3232 #ifndef OPENSSL_NO_ECDH
3233 if (idx
== SSL_PKEY_ECC
)
3235 if (ssl_check_srvr_ecc_cert_and_alg(sc
->peer_pkeys
[idx
].x509
,
3237 { /* check failed */
3238 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_BAD_ECC_CERT
);
3247 pkey
=X509_get_pubkey(sc
->peer_pkeys
[idx
].x509
);
3248 i
=X509_certificate_type(sc
->peer_pkeys
[idx
].x509
,pkey
);
3249 EVP_PKEY_free(pkey
);
3252 /* Check that we have a certificate if we require one */
3253 if ((alg_a
& SSL_aRSA
) && !has_bits(i
,EVP_PK_RSA
|EVP_PKT_SIGN
))
3255 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_SIGNING_CERT
);
3258 #ifndef OPENSSL_NO_DSA
3259 else if ((alg_a
& SSL_aDSS
) && !has_bits(i
,EVP_PK_DSA
|EVP_PKT_SIGN
))
3261 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DSA_SIGNING_CERT
);
3265 #ifndef OPENSSL_NO_RSA
3266 if ((alg_k
& SSL_kRSA
) &&
3267 !(has_bits(i
,EVP_PK_RSA
|EVP_PKT_ENC
) || (rsa
!= NULL
)))
3269 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_ENCRYPTING_CERT
);
3273 #ifndef OPENSSL_NO_DH
3274 if ((alg_k
& SSL_kEDH
) &&
3275 !(has_bits(i
,EVP_PK_DH
|EVP_PKT_EXCH
) || (dh
!= NULL
)))
3277 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_KEY
);
3280 else if ((alg_k
& SSL_kDHr
) && !has_bits(i
,EVP_PK_DH
|EVP_PKS_RSA
))
3282 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_RSA_CERT
);
3285 #ifndef OPENSSL_NO_DSA
3286 else if ((alg_k
& SSL_kDHd
) && !has_bits(i
,EVP_PK_DH
|EVP_PKS_DSA
))
3288 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_DSA_CERT
);
3294 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) && !has_bits(i
,EVP_PKT_EXP
))
3296 #ifndef OPENSSL_NO_RSA
3297 if (alg_k
& SSL_kRSA
)
3300 || RSA_size(rsa
)*8 > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
3302 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_RSA_KEY
);
3308 #ifndef OPENSSL_NO_DH
3309 if (alg_k
& (SSL_kEDH
|SSL_kDHr
|SSL_kDHd
))
3312 || DH_size(dh
)*8 > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
3314 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_DH_KEY
);
3321 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE
);
3327 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_HANDSHAKE_FAILURE
);
3332 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
3333 int ssl3_send_next_proto(SSL
*s
)
3335 unsigned int len
, padding_len
;
3338 if (s
->state
== SSL3_ST_CW_NEXT_PROTO_A
)
3340 len
= s
->next_proto_negotiated_len
;
3341 padding_len
= 32 - ((len
+ 2) % 32);
3342 d
= (unsigned char *)s
->init_buf
->data
;
3344 memcpy(d
+ 5, s
->next_proto_negotiated
, len
);
3345 d
[5 + len
] = padding_len
;
3346 memset(d
+ 6 + len
, 0, padding_len
);
3347 *(d
++)=SSL3_MT_NEXT_PROTO
;
3348 l2n3(2 + len
+ padding_len
, d
);
3349 s
->state
= SSL3_ST_CW_NEXT_PROTO_B
;
3350 s
->init_num
= 4 + 2 + len
+ padding_len
;
3354 return ssl3_do_write(s
, SSL3_RT_HANDSHAKE
);
3356 #endif /* !OPENSSL_NO_TLSEXT && !OPENSSL_NO_NEXTPROTONEG */
3358 /* Check to see if handshake is full or resumed. Usually this is just a
3359 * case of checking to see if a cache hit has occurred. In the case of
3360 * session tickets we have to check the next message to be sure.
3363 #ifndef OPENSSL_NO_TLSEXT
3364 int ssl3_check_finished(SSL
*s
)
3368 /* If we have no ticket it cannot be a resumed session. */
3369 if (!s
->session
->tlsext_tick
)
3371 /* this function is called when we really expect a Certificate
3372 * message, so permit appropriate message length */
3373 n
=s
->method
->ssl_get_message(s
,
3379 if (!ok
) return((int)n
);
3380 s
->s3
->tmp
.reuse_message
= 1;
3381 if ((s
->s3
->tmp
.message_type
== SSL3_MT_FINISHED
)
3382 || (s
->s3
->tmp
.message_type
== SSL3_MT_NEWSESSION_TICKET
))
3389 int ssl_do_client_cert_cb(SSL
*s
, X509
**px509
, EVP_PKEY
**ppkey
)
3392 #ifndef OPENSSL_NO_ENGINE
3393 if (s
->ctx
->client_cert_engine
)
3395 i
= ENGINE_load_ssl_client_cert(s
->ctx
->client_cert_engine
, s
,
3396 SSL_get_client_CA_list(s
),
3397 px509
, ppkey
, NULL
, NULL
, NULL
);
3402 if (s
->ctx
->client_cert_cb
)
3403 i
= s
->ctx
->client_cert_cb(s
,px509
,ppkey
);