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 <openssl/crypto.h>
153 #include "ssl_locl.h"
154 #include "kssl_lcl.h"
155 #include <openssl/buffer.h>
156 #include <openssl/rand.h>
157 #include <openssl/objects.h>
158 #include <openssl/evp.h>
159 #include <openssl/md5.h>
161 #include <openssl/fips.h>
163 #ifndef OPENSSL_NO_DH
164 #include <openssl/dh.h>
166 #include <openssl/bn.h>
167 #ifndef OPENSSL_NO_ENGINE
168 #include <openssl/engine.h>
171 static const SSL_METHOD
*ssl3_get_client_method(int ver
);
172 static int ca_dn_cmp(const X509_NAME
* const *a
,const X509_NAME
* const *b
);
174 static const SSL_METHOD
*ssl3_get_client_method(int ver
)
176 if (ver
== SSL3_VERSION
)
177 return(SSLv3_client_method());
182 IMPLEMENT_ssl3_meth_func(SSLv3_client_method
,
183 ssl_undefined_function
,
185 ssl3_get_client_method
)
187 int ssl3_connect(SSL
*s
)
190 unsigned long Time
=(unsigned long)time(NULL
);
191 void (*cb
)(const SSL
*ssl
,int type
,int val
)=NULL
;
193 int new_state
,state
,skip
=0;
195 RAND_add(&Time
,sizeof(Time
),0);
199 if (s
->info_callback
!= NULL
)
201 else if (s
->ctx
->info_callback
!= NULL
)
202 cb
=s
->ctx
->info_callback
;
205 if (!SSL_in_init(s
) || SSL_in_before(s
)) SSL_clear(s
);
207 #ifndef OPENSSL_NO_HEARTBEATS
208 /* If we're awaiting a HeartbeatResponse, pretend we
209 * already got and don't await it anymore, because
210 * Heartbeats don't make sense during handshakes anyway.
212 if (s
->tlsext_hb_pending
)
214 s
->tlsext_hb_pending
= 0;
225 case SSL_ST_RENEGOTIATE
:
227 s
->state
=SSL_ST_CONNECT
;
228 s
->ctx
->stats
.sess_connect_renegotiate
++;
232 case SSL_ST_BEFORE
|SSL_ST_CONNECT
:
233 case SSL_ST_OK
|SSL_ST_CONNECT
:
236 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_START
,1);
238 if ((s
->version
& 0xff00 ) != 0x0300)
240 SSLerr(SSL_F_SSL3_CONNECT
, ERR_R_INTERNAL_ERROR
);
245 /* s->version=SSL3_VERSION; */
246 s
->type
=SSL_ST_CONNECT
;
248 if (s
->init_buf
== NULL
)
250 if ((buf
=BUF_MEM_new()) == NULL
)
255 if (!BUF_MEM_grow(buf
,SSL3_RT_MAX_PLAIN_LENGTH
))
264 if (!ssl3_setup_buffers(s
)) { ret
= -1; goto end
; }
266 /* setup buffing BIO */
267 if (!ssl_init_wbio_buffer(s
,0)) { ret
= -1; goto end
; }
269 /* don't push the buffering BIO quite yet */
271 ssl3_init_finished_mac(s
);
273 s
->state
=SSL3_ST_CW_CLNT_HELLO_A
;
274 s
->ctx
->stats
.sess_connect
++;
278 case SSL3_ST_CW_CLNT_HELLO_A
:
279 case SSL3_ST_CW_CLNT_HELLO_B
:
282 ret
=ssl3_client_hello(s
);
283 if (ret
<= 0) goto end
;
284 s
->state
=SSL3_ST_CR_SRVR_HELLO_A
;
287 /* turn on buffering for the next lot of output */
288 if (s
->bbio
!= s
->wbio
)
289 s
->wbio
=BIO_push(s
->bbio
,s
->wbio
);
293 case SSL3_ST_CR_SRVR_HELLO_A
:
294 case SSL3_ST_CR_SRVR_HELLO_B
:
295 ret
=ssl3_get_server_hello(s
);
296 if (ret
<= 0) goto end
;
300 s
->state
=SSL3_ST_CR_FINISHED_A
;
301 #ifndef OPENSSL_NO_TLSEXT
302 if (s
->tlsext_ticket_expected
)
304 /* receive renewed session ticket */
305 s
->state
=SSL3_ST_CR_SESSION_TICKET_A
;
310 s
->state
=SSL3_ST_CR_CERT_A
;
314 case SSL3_ST_CR_CERT_A
:
315 case SSL3_ST_CR_CERT_B
:
316 #ifndef OPENSSL_NO_TLSEXT
317 ret
=ssl3_check_finished(s
);
318 if (ret
<= 0) goto end
;
322 if (s
->tlsext_ticket_expected
)
323 s
->state
=SSL3_ST_CR_SESSION_TICKET_A
;
325 s
->state
=SSL3_ST_CR_FINISHED_A
;
330 /* Check if it is anon DH/ECDH */
332 if (!(s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aNULL
) &&
333 !(s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kPSK
))
335 ret
=ssl3_get_server_certificate(s
);
336 if (ret
<= 0) goto end
;
337 #ifndef OPENSSL_NO_TLSEXT
338 if (s
->tlsext_status_expected
)
339 s
->state
=SSL3_ST_CR_CERT_STATUS_A
;
341 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
346 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
353 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
358 case SSL3_ST_CR_KEY_EXCH_A
:
359 case SSL3_ST_CR_KEY_EXCH_B
:
360 ret
=ssl3_get_key_exchange(s
);
361 if (ret
<= 0) goto end
;
362 s
->state
=SSL3_ST_CR_CERT_REQ_A
;
365 /* at this point we check that we have the
366 * required stuff from the server */
367 if (!ssl3_check_cert_and_algorithm(s
))
374 case SSL3_ST_CR_CERT_REQ_A
:
375 case SSL3_ST_CR_CERT_REQ_B
:
376 ret
=ssl3_get_certificate_request(s
);
377 if (ret
<= 0) goto end
;
378 s
->state
=SSL3_ST_CR_SRVR_DONE_A
;
382 case SSL3_ST_CR_SRVR_DONE_A
:
383 case SSL3_ST_CR_SRVR_DONE_B
:
384 ret
=ssl3_get_server_done(s
);
385 if (ret
<= 0) goto end
;
386 #ifndef OPENSSL_NO_SRP
387 if (s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kSRP
)
389 if ((ret
= SRP_Calc_A_param(s
))<=0)
391 SSLerr(SSL_F_SSL3_CONNECT
,SSL_R_SRP_A_CALC
);
392 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_INTERNAL_ERROR
);
397 if (s
->s3
->tmp
.cert_req
)
398 s
->state
=SSL3_ST_CW_CERT_A
;
400 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
405 case SSL3_ST_CW_CERT_A
:
406 case SSL3_ST_CW_CERT_B
:
407 case SSL3_ST_CW_CERT_C
:
408 case SSL3_ST_CW_CERT_D
:
409 ret
=ssl3_send_client_certificate(s
);
410 if (ret
<= 0) goto end
;
411 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
415 case SSL3_ST_CW_KEY_EXCH_A
:
416 case SSL3_ST_CW_KEY_EXCH_B
:
417 ret
=ssl3_send_client_key_exchange(s
);
418 if (ret
<= 0) goto end
;
419 /* EAY EAY EAY need to check for DH fix cert
421 /* For TLS, cert_req is set to 2, so a cert chain
422 * of nothing is sent, but no verify packet is sent */
423 /* XXX: For now, we do not support client
424 * authentication in ECDH cipher suites with
425 * ECDH (rather than ECDSA) certificates.
426 * We need to skip the certificate verify
427 * message when client's ECDH public key is sent
428 * inside the client certificate.
430 if (s
->s3
->tmp
.cert_req
== 1)
432 s
->state
=SSL3_ST_CW_CERT_VRFY_A
;
436 s
->state
=SSL3_ST_CW_CHANGE_A
;
437 s
->s3
->change_cipher_spec
=0;
439 if (s
->s3
->flags
& TLS1_FLAGS_SKIP_CERT_VERIFY
)
441 s
->state
=SSL3_ST_CW_CHANGE_A
;
442 s
->s3
->change_cipher_spec
=0;
448 case SSL3_ST_CW_CERT_VRFY_A
:
449 case SSL3_ST_CW_CERT_VRFY_B
:
450 ret
=ssl3_send_client_verify(s
);
451 if (ret
<= 0) goto end
;
452 s
->state
=SSL3_ST_CW_CHANGE_A
;
454 s
->s3
->change_cipher_spec
=0;
457 case SSL3_ST_CW_CHANGE_A
:
458 case SSL3_ST_CW_CHANGE_B
:
459 ret
=ssl3_send_change_cipher_spec(s
,
460 SSL3_ST_CW_CHANGE_A
,SSL3_ST_CW_CHANGE_B
);
461 if (ret
<= 0) goto end
;
463 #if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
464 s
->state
=SSL3_ST_CW_FINISHED_A
;
466 if (s
->s3
->next_proto_neg_seen
)
467 s
->state
=SSL3_ST_CW_NEXT_PROTO_A
;
469 s
->state
=SSL3_ST_CW_FINISHED_A
;
473 s
->session
->cipher
=s
->s3
->tmp
.new_cipher
;
474 #ifdef OPENSSL_NO_COMP
475 s
->session
->compress_meth
=0;
477 if (s
->s3
->tmp
.new_compression
== NULL
)
478 s
->session
->compress_meth
=0;
480 s
->session
->compress_meth
=
481 s
->s3
->tmp
.new_compression
->id
;
483 if (!s
->method
->ssl3_enc
->setup_key_block(s
))
489 if (!s
->method
->ssl3_enc
->change_cipher_state(s
,
490 SSL3_CHANGE_CIPHER_CLIENT_WRITE
))
498 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
499 case SSL3_ST_CW_NEXT_PROTO_A
:
500 case SSL3_ST_CW_NEXT_PROTO_B
:
501 ret
=ssl3_send_next_proto(s
);
502 if (ret
<= 0) goto end
;
503 s
->state
=SSL3_ST_CW_FINISHED_A
;
507 case SSL3_ST_CW_FINISHED_A
:
508 case SSL3_ST_CW_FINISHED_B
:
509 ret
=ssl3_send_finished(s
,
510 SSL3_ST_CW_FINISHED_A
,SSL3_ST_CW_FINISHED_B
,
511 s
->method
->ssl3_enc
->client_finished_label
,
512 s
->method
->ssl3_enc
->client_finished_label_len
);
513 if (ret
<= 0) goto end
;
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 ret
=ssl3_get_finished(s
,SSL3_ST_CR_FINISHED_A
,
564 SSL3_ST_CR_FINISHED_B
);
565 if (ret
<= 0) goto end
;
568 s
->state
=SSL3_ST_CW_CHANGE_A
;
574 case SSL3_ST_CW_FLUSH
:
575 s
->rwstate
=SSL_WRITING
;
576 if (BIO_flush(s
->wbio
) <= 0)
581 s
->rwstate
=SSL_NOTHING
;
582 s
->state
=s
->s3
->tmp
.next_state
;
586 /* clean a few things up */
587 ssl3_cleanup_key_block(s
);
589 if (s
->init_buf
!= NULL
)
591 BUF_MEM_free(s
->init_buf
);
595 /* If we are not 'joining' the last two packets,
596 * remove the buffering now */
597 if (!(s
->s3
->flags
& SSL3_FLAGS_POP_BUFFER
))
598 ssl_free_wbio_buffer(s
);
599 /* else do it later in ssl3_write */
605 ssl_update_cache(s
,SSL_SESS_CACHE_CLIENT
);
606 if (s
->hit
) s
->ctx
->stats
.sess_hit
++;
610 s
->handshake_func
=ssl3_connect
;
611 s
->ctx
->stats
.sess_connect_good
++;
613 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_DONE
,1);
619 SSLerr(SSL_F_SSL3_CONNECT
,SSL_R_UNKNOWN_STATE
);
625 /* did we do anything */
626 if (!s
->s3
->tmp
.reuse_message
&& !skip
)
630 if ((ret
=BIO_flush(s
->wbio
)) <= 0)
634 if ((cb
!= NULL
) && (s
->state
!= state
))
638 cb(s
,SSL_CB_CONNECT_LOOP
,1);
649 cb(s
,SSL_CB_CONNECT_EXIT
,ret
);
654 int ssl3_client_hello(SSL
*s
)
659 unsigned long Time
,l
;
660 #ifndef OPENSSL_NO_COMP
665 buf
=(unsigned char *)s
->init_buf
->data
;
666 if (s
->state
== SSL3_ST_CW_CLNT_HELLO_A
)
668 SSL_SESSION
*sess
= s
->session
;
669 if ((sess
== NULL
) ||
670 (sess
->ssl_version
!= s
->version
) ||
671 #ifdef OPENSSL_NO_TLSEXT
672 !sess
->session_id_length
||
674 (!sess
->session_id_length
&& !sess
->tlsext_tick
) ||
676 (sess
->not_resumable
))
678 if (!ssl_get_new_session(s
,0))
681 /* else use the pre-loaded session */
683 p
=s
->s3
->client_random
;
684 Time
=(unsigned long)time(NULL
); /* Time */
686 if (RAND_pseudo_bytes(p
,SSL3_RANDOM_SIZE
-4) <= 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
);
907 #endif /* OPENSSL_NO_TLSEXT */
909 if (j
!= 0 && j
== s
->session
->session_id_length
910 && memcmp(p
,s
->session
->session_id
,j
) == 0)
912 if(s
->sid_ctx_length
!= s
->session
->sid_ctx_length
913 || memcmp(s
->session
->sid_ctx
,s
->sid_ctx
,s
->sid_ctx_length
))
915 /* actually a client application bug */
916 al
=SSL_AD_ILLEGAL_PARAMETER
;
917 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT
);
922 else /* a miss or crap from the other end */
924 /* If we were trying for session-id reuse, make a new
925 * SSL_SESSION so we don't stuff up other people */
927 if (s
->session
->session_id_length
> 0)
929 if (!ssl_get_new_session(s
,0))
931 al
=SSL_AD_INTERNAL_ERROR
;
935 s
->session
->session_id_length
=j
;
936 memcpy(s
->session
->session_id
,p
,j
); /* j could be 0 */
939 c
=ssl_get_cipher_by_char(s
,p
);
943 al
=SSL_AD_ILLEGAL_PARAMETER
;
944 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNKNOWN_CIPHER_RETURNED
);
947 /* TLS v1.2 only ciphersuites require v1.2 or later */
948 if ((c
->algorithm_ssl
& SSL_TLSV1_2
) &&
949 (TLS1_get_version(s
) < TLS1_2_VERSION
))
951 al
=SSL_AD_ILLEGAL_PARAMETER
;
952 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_CIPHER_RETURNED
);
955 p
+=ssl_put_cipher_by_char(s
,NULL
,NULL
);
957 sk
=ssl_get_ciphers_by_id(s
);
958 i
=sk_SSL_CIPHER_find(sk
,c
);
961 /* we did not say we would use this cipher */
962 al
=SSL_AD_ILLEGAL_PARAMETER
;
963 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_CIPHER_RETURNED
);
967 /* Depending on the session caching (internal/external), the cipher
968 and/or cipher_id values may not be set. Make sure that
969 cipher_id is set and use it for comparison. */
970 if (s
->session
->cipher
)
971 s
->session
->cipher_id
= s
->session
->cipher
->id
;
972 if (s
->hit
&& (s
->session
->cipher_id
!= c
->id
))
974 /* Workaround is now obsolete */
977 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
))
980 al
=SSL_AD_ILLEGAL_PARAMETER
;
981 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED
);
985 s
->s3
->tmp
.new_cipher
=c
;
986 /* Don't digest cached records if TLS v1.2: we may need them for
987 * client authentication.
989 if (TLS1_get_version(s
) < TLS1_2_VERSION
&& !ssl3_digest_cached_records(s
))
991 /* lets get the compression algorithm */
993 #ifdef OPENSSL_NO_COMP
996 al
=SSL_AD_ILLEGAL_PARAMETER
;
997 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
1000 /* If compression is disabled we'd better not try to resume a session
1001 * using compression.
1003 if (s
->session
->compress_meth
!= 0)
1005 al
=SSL_AD_INTERNAL_ERROR
;
1006 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_INCONSISTENT_COMPRESSION
);
1011 if (s
->hit
&& j
!= s
->session
->compress_meth
)
1013 al
=SSL_AD_ILLEGAL_PARAMETER
;
1014 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED
);
1019 else if (s
->options
& SSL_OP_NO_COMPRESSION
)
1021 al
=SSL_AD_ILLEGAL_PARAMETER
;
1022 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_COMPRESSION_DISABLED
);
1026 comp
=ssl3_comp_find(s
->ctx
->comp_methods
,j
);
1028 if ((j
!= 0) && (comp
== NULL
))
1030 al
=SSL_AD_ILLEGAL_PARAMETER
;
1031 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
1036 s
->s3
->tmp
.new_compression
=comp
;
1040 #ifndef OPENSSL_NO_TLSEXT
1042 if (s
->version
>= SSL3_VERSION
)
1044 if (!ssl_parse_serverhello_tlsext(s
,&p
,d
,n
, &al
))
1046 /* 'al' set by ssl_parse_serverhello_tlsext */
1047 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_PARSE_TLSEXT
);
1050 if (ssl_check_serverhello_tlsext(s
) <= 0)
1052 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_SERVERHELLO_TLSEXT
);
1060 /* wrong packet length */
1061 al
=SSL_AD_DECODE_ERROR
;
1062 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_PACKET_LENGTH
);
1068 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1073 int ssl3_get_server_certificate(SSL
*s
)
1075 int al
,i
,ok
,ret
= -1;
1076 unsigned long n
,nc
,llen
,l
;
1078 const unsigned char *q
,*p
;
1080 STACK_OF(X509
) *sk
=NULL
;
1082 EVP_PKEY
*pkey
=NULL
;
1083 int need_cert
= 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1085 n
=s
->method
->ssl_get_message(s
,
1092 if (!ok
) return((int)n
);
1094 if ((s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_KEY_EXCHANGE
) ||
1095 ((s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aKRB5
) &&
1096 (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_DONE
)))
1098 s
->s3
->tmp
.reuse_message
=1;
1102 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE
)
1104 al
=SSL_AD_UNEXPECTED_MESSAGE
;
1105 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_BAD_MESSAGE_TYPE
);
1108 p
=d
=(unsigned char *)s
->init_msg
;
1110 if ((sk
=sk_X509_new_null()) == NULL
)
1112 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
1119 al
=SSL_AD_DECODE_ERROR
;
1120 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_LENGTH_MISMATCH
);
1123 for (nc
=0; nc
<llen
; )
1126 if ((l
+nc
+3) > llen
)
1128 al
=SSL_AD_DECODE_ERROR
;
1129 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
1134 x
=d2i_X509(NULL
,&q
,l
);
1137 al
=SSL_AD_BAD_CERTIFICATE
;
1138 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_ASN1_LIB
);
1143 al
=SSL_AD_DECODE_ERROR
;
1144 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
1147 if (!sk_X509_push(sk
,x
))
1149 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
1157 i
=ssl_verify_cert_chain(s
,sk
);
1158 if ((s
->verify_mode
!= SSL_VERIFY_NONE
) && (i
<= 0)
1159 #ifndef OPENSSL_NO_KRB5
1160 && !((s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kKRB5
) &&
1161 (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aKRB5
))
1162 #endif /* OPENSSL_NO_KRB5 */
1165 al
=ssl_verify_alarm_type(s
->verify_result
);
1166 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERTIFICATE_VERIFY_FAILED
);
1169 ERR_clear_error(); /* but we keep s->verify_result */
1171 sc
=ssl_sess_cert_new();
1172 if (sc
== NULL
) goto err
;
1174 if (s
->session
->sess_cert
) ssl_sess_cert_free(s
->session
->sess_cert
);
1175 s
->session
->sess_cert
=sc
;
1178 /* Inconsistency alert: cert_chain does include the peer's
1179 * certificate, which we don't include in s3_srvr.c */
1180 x
=sk_X509_value(sk
,0);
1182 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1184 pkey
=X509_get_pubkey(x
);
1186 /* VRS: allow null cert if auth == KRB5 */
1187 need_cert
= ((s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kKRB5
) &&
1188 (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aKRB5
))
1192 printf("pkey,x = %p, %p\n", pkey
,x
);
1193 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x
,pkey
));
1194 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s
->s3
->tmp
.new_cipher
->name
,
1195 s
->s3
->tmp
.new_cipher
->algorithm_mkey
, s
->s3
->tmp
.new_cipher
->algorithm_auth
, need_cert
);
1196 #endif /* KSSL_DEBUG */
1198 if (need_cert
&& ((pkey
== NULL
) || EVP_PKEY_missing_parameters(pkey
)))
1202 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
1203 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS
);
1207 i
=ssl_cert_type(x
,pkey
);
1208 if (need_cert
&& i
< 0)
1212 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
1213 SSL_R_UNKNOWN_CERTIFICATE_TYPE
);
1219 sc
->peer_cert_type
=i
;
1220 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
1221 /* Why would the following ever happen?
1222 * We just created sc a couple of lines ago. */
1223 if (sc
->peer_pkeys
[i
].x509
!= NULL
)
1224 X509_free(sc
->peer_pkeys
[i
].x509
);
1225 sc
->peer_pkeys
[i
].x509
=x
;
1226 sc
->peer_key
= &(sc
->peer_pkeys
[i
]);
1228 if (s
->session
->peer
!= NULL
)
1229 X509_free(s
->session
->peer
);
1230 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
1235 sc
->peer_cert_type
=i
;
1238 if (s
->session
->peer
!= NULL
)
1239 X509_free(s
->session
->peer
);
1240 s
->session
->peer
=NULL
;
1242 s
->session
->verify_result
= s
->verify_result
;
1250 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1253 EVP_PKEY_free(pkey
);
1255 sk_X509_pop_free(sk
,X509_free
);
1259 int ssl3_get_key_exchange(SSL
*s
)
1261 #ifndef OPENSSL_NO_RSA
1262 unsigned char *q
,md_buf
[EVP_MAX_MD_SIZE
*2];
1265 unsigned char *param
,*p
;
1266 int al
,i
,j
,param_len
,ok
;
1268 EVP_PKEY
*pkey
=NULL
;
1269 const EVP_MD
*md
= NULL
;
1270 #ifndef OPENSSL_NO_RSA
1273 #ifndef OPENSSL_NO_DH
1276 #ifndef OPENSSL_NO_ECDH
1277 EC_KEY
*ecdh
= NULL
;
1278 BN_CTX
*bn_ctx
= NULL
;
1279 EC_POINT
*srvr_ecpoint
= NULL
;
1281 int encoded_pt_len
= 0;
1284 /* use same message size as in ssl3_get_certificate_request()
1285 * as ServerKeyExchange message may be skipped */
1286 n
=s
->method
->ssl_get_message(s
,
1287 SSL3_ST_CR_KEY_EXCH_A
,
1288 SSL3_ST_CR_KEY_EXCH_B
,
1292 if (!ok
) return((int)n
);
1294 if (s
->s3
->tmp
.message_type
!= SSL3_MT_SERVER_KEY_EXCHANGE
)
1296 #ifndef OPENSSL_NO_PSK
1297 /* In plain PSK ciphersuite, ServerKeyExchange can be
1298 omitted if no identity hint is sent. Set
1299 session->sess_cert anyway to avoid problems
1301 if (s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kPSK
)
1303 s
->session
->sess_cert
=ssl_sess_cert_new();
1304 if (s
->ctx
->psk_identity_hint
)
1305 OPENSSL_free(s
->ctx
->psk_identity_hint
);
1306 s
->ctx
->psk_identity_hint
= NULL
;
1309 s
->s3
->tmp
.reuse_message
=1;
1313 param
=p
=(unsigned char *)s
->init_msg
;
1314 if (s
->session
->sess_cert
!= NULL
)
1316 #ifndef OPENSSL_NO_RSA
1317 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
1319 RSA_free(s
->session
->sess_cert
->peer_rsa_tmp
);
1320 s
->session
->sess_cert
->peer_rsa_tmp
=NULL
;
1323 #ifndef OPENSSL_NO_DH
1324 if (s
->session
->sess_cert
->peer_dh_tmp
)
1326 DH_free(s
->session
->sess_cert
->peer_dh_tmp
);
1327 s
->session
->sess_cert
->peer_dh_tmp
=NULL
;
1330 #ifndef OPENSSL_NO_ECDH
1331 if (s
->session
->sess_cert
->peer_ecdh_tmp
)
1333 EC_KEY_free(s
->session
->sess_cert
->peer_ecdh_tmp
);
1334 s
->session
->sess_cert
->peer_ecdh_tmp
=NULL
;
1340 s
->session
->sess_cert
=ssl_sess_cert_new();
1344 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
1345 alg_a
=s
->s3
->tmp
.new_cipher
->algorithm_auth
;
1346 EVP_MD_CTX_init(&md_ctx
);
1348 #ifndef OPENSSL_NO_PSK
1349 if (alg_k
& SSL_kPSK
)
1351 char tmp_id_hint
[PSK_MAX_IDENTITY_LEN
+1];
1353 al
=SSL_AD_HANDSHAKE_FAILURE
;
1356 /* Store PSK identity hint for later use, hint is used
1357 * in ssl3_send_client_key_exchange. Assume that the
1358 * maximum length of a PSK identity hint can be as
1359 * long as the maximum length of a PSK identity. */
1360 if (i
> PSK_MAX_IDENTITY_LEN
)
1362 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1363 SSL_R_DATA_LENGTH_TOO_LONG
);
1368 al
=SSL_AD_DECODE_ERROR
;
1369 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,
1370 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH
);
1373 /* If received PSK identity hint contains NULL
1374 * characters, the hint is truncated from the first
1375 * NULL. p may not be ending with NULL, so create a
1376 * NULL-terminated string. */
1377 memcpy(tmp_id_hint
, p
, i
);
1378 memset(tmp_id_hint
+i
, 0, PSK_MAX_IDENTITY_LEN
+1-i
);
1379 if (s
->ctx
->psk_identity_hint
!= NULL
)
1380 OPENSSL_free(s
->ctx
->psk_identity_hint
);
1381 s
->ctx
->psk_identity_hint
= BUF_strdup(tmp_id_hint
);
1382 if (s
->ctx
->psk_identity_hint
== NULL
)
1384 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
, ERR_R_MALLOC_FAILURE
);
1392 #endif /* !OPENSSL_NO_PSK */
1393 #ifndef OPENSSL_NO_SRP
1394 if (alg_k
& SSL_kSRP
)
1400 al
=SSL_AD_DECODE_ERROR
;
1401 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_N_LENGTH
);
1404 if (!(s
->srp_ctx
.N
=BN_bin2bn(p
,i
,NULL
)))
1406 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1415 al
=SSL_AD_DECODE_ERROR
;
1416 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_G_LENGTH
);
1419 if (!(s
->srp_ctx
.g
=BN_bin2bn(p
,i
,NULL
)))
1421 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1426 i
= (unsigned int)(p
[0]);
1431 al
=SSL_AD_DECODE_ERROR
;
1432 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_S_LENGTH
);
1435 if (!(s
->srp_ctx
.s
=BN_bin2bn(p
,i
,NULL
)))
1437 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1446 al
=SSL_AD_DECODE_ERROR
;
1447 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SRP_B_LENGTH
);
1450 if (!(s
->srp_ctx
.B
=BN_bin2bn(p
,i
,NULL
)))
1452 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1458 /* We must check if there is a certificate */
1459 #ifndef OPENSSL_NO_RSA
1460 if (alg_a
& SSL_aRSA
)
1461 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1466 #ifndef OPENSSL_NO_DSA
1467 else if (alg_a
& SSL_aDSS
)
1468 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_DSA_SIGN
].x509
);
1472 #endif /* !OPENSSL_NO_SRP */
1473 #ifndef OPENSSL_NO_RSA
1474 if (alg_k
& SSL_kRSA
)
1476 if ((rsa
=RSA_new()) == NULL
)
1478 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1485 al
=SSL_AD_DECODE_ERROR
;
1486 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_MODULUS_LENGTH
);
1489 if (!(rsa
->n
=BN_bin2bn(p
,i
,rsa
->n
)))
1491 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1500 al
=SSL_AD_DECODE_ERROR
;
1501 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_E_LENGTH
);
1504 if (!(rsa
->e
=BN_bin2bn(p
,i
,rsa
->e
)))
1506 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1512 /* this should be because we are using an export cipher */
1513 if (alg_a
& SSL_aRSA
)
1514 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1517 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1520 s
->session
->sess_cert
->peer_rsa_tmp
=rsa
;
1523 #else /* OPENSSL_NO_RSA */
1527 #ifndef OPENSSL_NO_DH
1528 else if (alg_k
& SSL_kEDH
)
1530 if ((dh
=DH_new()) == NULL
)
1532 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1539 al
=SSL_AD_DECODE_ERROR
;
1540 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_P_LENGTH
);
1543 if (!(dh
->p
=BN_bin2bn(p
,i
,NULL
)))
1545 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1554 al
=SSL_AD_DECODE_ERROR
;
1555 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_G_LENGTH
);
1558 if (!(dh
->g
=BN_bin2bn(p
,i
,NULL
)))
1560 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1569 al
=SSL_AD_DECODE_ERROR
;
1570 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_PUB_KEY_LENGTH
);
1573 if (!(dh
->pub_key
=BN_bin2bn(p
,i
,NULL
)))
1575 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1581 #ifndef OPENSSL_NO_RSA
1582 if (alg_a
& SSL_aRSA
)
1583 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1588 #ifndef OPENSSL_NO_DSA
1589 else if (alg_a
& SSL_aDSS
)
1590 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_DSA_SIGN
].x509
);
1592 /* else anonymous DH, so no certificate or pkey. */
1594 s
->session
->sess_cert
->peer_dh_tmp
=dh
;
1597 else if ((alg_k
& SSL_kDHr
) || (alg_k
& SSL_kDHd
))
1599 al
=SSL_AD_ILLEGAL_PARAMETER
;
1600 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER
);
1603 #endif /* !OPENSSL_NO_DH */
1605 #ifndef OPENSSL_NO_ECDH
1606 else if (alg_k
& SSL_kEECDH
)
1609 const EC_GROUP
*group
;
1611 if ((ecdh
=EC_KEY_new()) == NULL
)
1613 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1617 /* Extract elliptic curve parameters and the
1618 * server's ephemeral ECDH public key.
1619 * Keep accumulating lengths of various components in
1620 * param_len and make sure it never exceeds n.
1623 /* XXX: For now we only support named (not generic) curves
1624 * and the ECParameters in this case is just three bytes.
1627 if ((param_len
> n
) ||
1628 (*p
!= NAMED_CURVE_TYPE
) ||
1629 ((curve_nid
= tls1_ec_curve_id2nid(*(p
+ 2))) == 0))
1631 al
=SSL_AD_INTERNAL_ERROR
;
1632 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS
);
1636 ngroup
= EC_GROUP_new_by_curve_name(curve_nid
);
1639 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_EC_LIB
);
1642 if (EC_KEY_set_group(ecdh
, ngroup
) == 0)
1644 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_EC_LIB
);
1647 EC_GROUP_free(ngroup
);
1649 group
= EC_KEY_get0_group(ecdh
);
1651 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) &&
1652 (EC_GROUP_get_degree(group
) > 163))
1654 al
=SSL_AD_EXPORT_RESTRICTION
;
1655 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER
);
1661 /* Next, get the encoded ECPoint */
1662 if (((srvr_ecpoint
= EC_POINT_new(group
)) == NULL
) ||
1663 ((bn_ctx
= BN_CTX_new()) == NULL
))
1665 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1669 encoded_pt_len
= *p
; /* length of encoded point */
1671 param_len
+= (1 + encoded_pt_len
);
1672 if ((param_len
> n
) ||
1673 (EC_POINT_oct2point(group
, srvr_ecpoint
,
1674 p
, encoded_pt_len
, bn_ctx
) == 0))
1676 al
=SSL_AD_DECODE_ERROR
;
1677 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_ECPOINT
);
1684 /* The ECC/TLS specification does not mention
1685 * the use of DSA to sign ECParameters in the server
1686 * key exchange message. We do support RSA and ECDSA.
1689 #ifndef OPENSSL_NO_RSA
1690 else if (alg_a
& SSL_aRSA
)
1691 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1693 #ifndef OPENSSL_NO_ECDSA
1694 else if (alg_a
& SSL_aECDSA
)
1695 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_ECC
].x509
);
1697 /* else anonymous ECDH, so no certificate or pkey. */
1698 EC_KEY_set_public_key(ecdh
, srvr_ecpoint
);
1699 s
->session
->sess_cert
->peer_ecdh_tmp
=ecdh
;
1701 BN_CTX_free(bn_ctx
);
1703 EC_POINT_free(srvr_ecpoint
);
1704 srvr_ecpoint
= NULL
;
1708 al
=SSL_AD_UNEXPECTED_MESSAGE
;
1709 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNEXPECTED_MESSAGE
);
1712 #endif /* !OPENSSL_NO_ECDH */
1715 /* p points to the next byte, there are 'n' bytes left */
1717 /* if it was signed, check the signature */
1720 if (TLS1_get_version(s
) >= TLS1_2_VERSION
)
1722 int sigalg
= tls12_get_sigid(pkey
);
1723 /* Should never happen */
1726 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1729 /* Check key type is consistent with signature */
1730 if (sigalg
!= (int)p
[1])
1732 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_WRONG_SIGNATURE_TYPE
);
1733 al
=SSL_AD_DECODE_ERROR
;
1736 md
= tls12_get_hash(p
[0]);
1739 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNKNOWN_DIGEST
);
1740 al
=SSL_AD_DECODE_ERROR
;
1744 fprintf(stderr
, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md
));
1754 j
=EVP_PKEY_size(pkey
);
1756 if ((i
!= n
) || (n
> j
) || (n
<= 0))
1758 /* wrong packet length */
1759 al
=SSL_AD_DECODE_ERROR
;
1760 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_WRONG_SIGNATURE_LENGTH
);
1764 #ifndef OPENSSL_NO_RSA
1765 if (pkey
->type
== EVP_PKEY_RSA
&& TLS1_get_version(s
) < TLS1_2_VERSION
)
1771 for (num
=2; num
> 0; num
--)
1773 EVP_MD_CTX_set_flags(&md_ctx
,
1774 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW
);
1775 EVP_DigestInit_ex(&md_ctx
,(num
== 2)
1776 ?s
->ctx
->md5
:s
->ctx
->sha1
, NULL
);
1777 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1778 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1779 EVP_DigestUpdate(&md_ctx
,param
,param_len
);
1780 EVP_DigestFinal_ex(&md_ctx
,q
,(unsigned int *)&i
);
1784 i
=RSA_verify(NID_md5_sha1
, md_buf
, j
, p
, n
,
1788 al
=SSL_AD_DECRYPT_ERROR
;
1789 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_DECRYPT
);
1795 al
=SSL_AD_DECRYPT_ERROR
;
1796 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1803 EVP_VerifyInit_ex(&md_ctx
, md
, NULL
);
1804 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1805 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1806 EVP_VerifyUpdate(&md_ctx
,param
,param_len
);
1807 if (EVP_VerifyFinal(&md_ctx
,p
,(int)n
,pkey
) <= 0)
1810 al
=SSL_AD_DECRYPT_ERROR
;
1811 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1818 if (!(alg_a
& SSL_aNULL
) && !(alg_k
& SSL_kPSK
))
1819 /* aNULL or kPSK do not need public keys */
1821 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1824 /* still data left over */
1827 al
=SSL_AD_DECODE_ERROR
;
1828 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_EXTRA_DATA_IN_MESSAGE
);
1832 EVP_PKEY_free(pkey
);
1833 EVP_MD_CTX_cleanup(&md_ctx
);
1836 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1838 EVP_PKEY_free(pkey
);
1839 #ifndef OPENSSL_NO_RSA
1843 #ifndef OPENSSL_NO_DH
1847 #ifndef OPENSSL_NO_ECDH
1848 BN_CTX_free(bn_ctx
);
1849 EC_POINT_free(srvr_ecpoint
);
1853 EVP_MD_CTX_cleanup(&md_ctx
);
1857 int ssl3_get_certificate_request(SSL
*s
)
1860 unsigned long n
,nc
,l
;
1861 unsigned int llen
, ctype_num
,i
;
1863 const unsigned char *p
,*q
;
1865 STACK_OF(X509_NAME
) *ca_sk
=NULL
;
1867 n
=s
->method
->ssl_get_message(s
,
1868 SSL3_ST_CR_CERT_REQ_A
,
1869 SSL3_ST_CR_CERT_REQ_B
,
1874 if (!ok
) return((int)n
);
1876 s
->s3
->tmp
.cert_req
=0;
1878 if (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_DONE
)
1880 s
->s3
->tmp
.reuse_message
=1;
1881 /* If we get here we don't need any cached handshake records
1882 * as we wont be doing client auth.
1884 if (s
->s3
->handshake_buffer
)
1886 if (!ssl3_digest_cached_records(s
))
1892 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE_REQUEST
)
1894 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
1895 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_WRONG_MESSAGE_TYPE
);
1899 /* TLS does not like anon-DH with client cert */
1900 if (s
->version
> SSL3_VERSION
)
1902 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aNULL
)
1904 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
1905 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER
);
1910 p
=d
=(unsigned char *)s
->init_msg
;
1912 if ((ca_sk
=sk_X509_NAME_new(ca_dn_cmp
)) == NULL
)
1914 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
1918 /* get the certificate types */
1920 if (ctype_num
> SSL3_CT_NUMBER
)
1921 ctype_num
=SSL3_CT_NUMBER
;
1922 for (i
=0; i
<ctype_num
; i
++)
1923 s
->s3
->tmp
.ctype
[i
]= p
[i
];
1925 if (TLS1_get_version(s
) >= TLS1_2_VERSION
)
1928 /* Check we have enough room for signature algorithms and
1929 * following length value.
1931 if ((unsigned long)(p
- d
+ llen
+ 2) > n
)
1933 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1934 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_DATA_LENGTH_TOO_LONG
);
1937 if ((llen
& 1) || !tls1_process_sigalgs(s
, p
, llen
))
1939 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1940 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_SIGNATURE_ALGORITHMS_ERROR
);
1946 /* get the CA RDNs */
1951 out
=fopen("/tmp/vsign.der","w");
1952 fwrite(p
,1,llen
,out
);
1957 if ((unsigned long)(p
- d
+ llen
) != n
)
1959 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1960 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_LENGTH_MISMATCH
);
1964 for (nc
=0; nc
<llen
; )
1967 if ((l
+nc
+2) > llen
)
1969 if ((s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
))
1970 goto cont
; /* netscape bugs */
1971 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1972 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_TOO_LONG
);
1978 if ((xn
=d2i_X509_NAME(NULL
,&q
,l
)) == NULL
)
1980 /* If netscape tolerance is on, ignore errors */
1981 if (s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
)
1985 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1986 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_ASN1_LIB
);
1993 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1994 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_LENGTH_MISMATCH
);
1997 if (!sk_X509_NAME_push(ca_sk
,xn
))
1999 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
2013 /* we should setup a certificate to return.... */
2014 s
->s3
->tmp
.cert_req
=1;
2015 s
->s3
->tmp
.ctype_num
=ctype_num
;
2016 if (s
->s3
->tmp
.ca_names
!= NULL
)
2017 sk_X509_NAME_pop_free(s
->s3
->tmp
.ca_names
,X509_NAME_free
);
2018 s
->s3
->tmp
.ca_names
=ca_sk
;
2023 if (ca_sk
!= NULL
) sk_X509_NAME_pop_free(ca_sk
,X509_NAME_free
);
2027 static int ca_dn_cmp(const X509_NAME
* const *a
, const X509_NAME
* const *b
)
2029 return(X509_NAME_cmp(*a
,*b
));
2031 #ifndef OPENSSL_NO_TLSEXT
2032 int ssl3_get_new_session_ticket(SSL
*s
)
2034 int ok
,al
,ret
=0, ticklen
;
2036 const unsigned char *p
;
2039 n
=s
->method
->ssl_get_message(s
,
2040 SSL3_ST_CR_SESSION_TICKET_A
,
2041 SSL3_ST_CR_SESSION_TICKET_B
,
2049 if (s
->s3
->tmp
.message_type
== SSL3_MT_FINISHED
)
2051 s
->s3
->tmp
.reuse_message
=1;
2054 if (s
->s3
->tmp
.message_type
!= SSL3_MT_NEWSESSION_TICKET
)
2056 al
=SSL_AD_UNEXPECTED_MESSAGE
;
2057 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_BAD_MESSAGE_TYPE
);
2062 /* need at least ticket_lifetime_hint + ticket length */
2063 al
= SSL_AD_DECODE_ERROR
;
2064 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_LENGTH_MISMATCH
);
2068 p
=d
=(unsigned char *)s
->init_msg
;
2069 n2l(p
, s
->session
->tlsext_tick_lifetime_hint
);
2071 /* ticket_lifetime_hint + ticket_length + ticket */
2072 if (ticklen
+ 6 != n
)
2074 al
= SSL_AD_DECODE_ERROR
;
2075 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_LENGTH_MISMATCH
);
2078 if (s
->session
->tlsext_tick
)
2080 OPENSSL_free(s
->session
->tlsext_tick
);
2081 s
->session
->tlsext_ticklen
= 0;
2083 s
->session
->tlsext_tick
= OPENSSL_malloc(ticklen
);
2084 if (!s
->session
->tlsext_tick
)
2086 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,ERR_R_MALLOC_FAILURE
);
2089 memcpy(s
->session
->tlsext_tick
, p
, ticklen
);
2090 s
->session
->tlsext_ticklen
= ticklen
;
2091 /* There are two ways to detect a resumed ticket sesion.
2092 * One is to set an appropriate session ID and then the server
2093 * must return a match in ServerHello. This allows the normal
2094 * client session ID matching to work and we know much
2095 * earlier that the ticket has been accepted.
2097 * The other way is to set zero length session ID when the
2098 * ticket is presented and rely on the handshake to determine
2099 * session resumption.
2101 * We choose the former approach because this fits in with
2102 * assumptions elsewhere in OpenSSL. The session ID is set
2103 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2106 EVP_Digest(p
, ticklen
,
2107 s
->session
->session_id
, &s
->session
->session_id_length
,
2108 #ifndef OPENSSL_NO_SHA256
2109 EVP_sha256(), NULL
);
2116 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
2121 int ssl3_get_cert_status(SSL
*s
)
2124 unsigned long resplen
,n
;
2125 const unsigned char *p
;
2127 n
=s
->method
->ssl_get_message(s
,
2128 SSL3_ST_CR_CERT_STATUS_A
,
2129 SSL3_ST_CR_CERT_STATUS_B
,
2130 SSL3_MT_CERTIFICATE_STATUS
,
2134 if (!ok
) return((int)n
);
2137 /* need at least status type + length */
2138 al
= SSL_AD_DECODE_ERROR
;
2139 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_LENGTH_MISMATCH
);
2142 p
= (unsigned char *)s
->init_msg
;
2143 if (*p
++ != TLSEXT_STATUSTYPE_ocsp
)
2145 al
= SSL_AD_DECODE_ERROR
;
2146 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_UNSUPPORTED_STATUS_TYPE
);
2150 if (resplen
+ 4 != n
)
2152 al
= SSL_AD_DECODE_ERROR
;
2153 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_LENGTH_MISMATCH
);
2156 if (s
->tlsext_ocsp_resp
)
2157 OPENSSL_free(s
->tlsext_ocsp_resp
);
2158 s
->tlsext_ocsp_resp
= BUF_memdup(p
, resplen
);
2159 if (!s
->tlsext_ocsp_resp
)
2161 al
= SSL_AD_INTERNAL_ERROR
;
2162 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,ERR_R_MALLOC_FAILURE
);
2165 s
->tlsext_ocsp_resplen
= resplen
;
2166 if (s
->ctx
->tlsext_status_cb
)
2169 ret
= s
->ctx
->tlsext_status_cb(s
, s
->ctx
->tlsext_status_arg
);
2172 al
= SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE
;
2173 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_INVALID_STATUS_RESPONSE
);
2178 al
= SSL_AD_INTERNAL_ERROR
;
2179 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,ERR_R_MALLOC_FAILURE
);
2185 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
2190 int ssl3_get_server_done(SSL
*s
)
2195 n
=s
->method
->ssl_get_message(s
,
2196 SSL3_ST_CR_SRVR_DONE_A
,
2197 SSL3_ST_CR_SRVR_DONE_B
,
2198 SSL3_MT_SERVER_DONE
,
2199 30, /* should be very small, like 0 :-) */
2202 if (!ok
) return((int)n
);
2205 /* should contain no data */
2206 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
2207 SSLerr(SSL_F_SSL3_GET_SERVER_DONE
,SSL_R_LENGTH_MISMATCH
);
2215 int ssl3_send_client_key_exchange(SSL
*s
)
2217 unsigned char *p
,*d
;
2219 unsigned long alg_k
;
2220 #ifndef OPENSSL_NO_RSA
2222 EVP_PKEY
*pkey
=NULL
;
2224 #ifndef OPENSSL_NO_KRB5
2226 #endif /* OPENSSL_NO_KRB5 */
2227 #ifndef OPENSSL_NO_ECDH
2228 EC_KEY
*clnt_ecdh
= NULL
;
2229 const EC_POINT
*srvr_ecpoint
= NULL
;
2230 EVP_PKEY
*srvr_pub_pkey
= NULL
;
2231 unsigned char *encodedPoint
= NULL
;
2232 int encoded_pt_len
= 0;
2233 BN_CTX
* bn_ctx
= NULL
;
2236 if (s
->state
== SSL3_ST_CW_KEY_EXCH_A
)
2238 d
=(unsigned char *)s
->init_buf
->data
;
2241 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
2243 /* Fool emacs indentation */
2245 #ifndef OPENSSL_NO_RSA
2246 else if (alg_k
& SSL_kRSA
)
2249 unsigned char tmp_buf
[SSL_MAX_MASTER_KEY_LENGTH
];
2251 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
2252 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
2255 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
2256 if ((pkey
== NULL
) ||
2257 (pkey
->type
!= EVP_PKEY_RSA
) ||
2258 (pkey
->pkey
.rsa
== NULL
))
2260 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
2264 EVP_PKEY_free(pkey
);
2267 tmp_buf
[0]=s
->client_version
>>8;
2268 tmp_buf
[1]=s
->client_version
&0xff;
2269 if (RAND_bytes(&(tmp_buf
[2]),sizeof tmp_buf
-2) <= 0)
2272 s
->session
->master_key_length
=sizeof tmp_buf
;
2275 /* Fix buf for TLS and beyond */
2276 if (s
->version
> SSL3_VERSION
)
2278 n
=RSA_public_encrypt(sizeof tmp_buf
,
2279 tmp_buf
,p
,rsa
,RSA_PKCS1_PADDING
);
2281 if (s
->options
& SSL_OP_PKCS1_CHECK_1
) p
[1]++;
2282 if (s
->options
& SSL_OP_PKCS1_CHECK_2
) tmp_buf
[0]=0x70;
2286 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_BAD_RSA_ENCRYPT
);
2290 /* Fix buf for TLS and beyond */
2291 if (s
->version
> SSL3_VERSION
)
2297 s
->session
->master_key_length
=
2298 s
->method
->ssl3_enc
->generate_master_secret(s
,
2299 s
->session
->master_key
,
2300 tmp_buf
,sizeof tmp_buf
);
2301 OPENSSL_cleanse(tmp_buf
,sizeof tmp_buf
);
2304 #ifndef OPENSSL_NO_KRB5
2305 else if (alg_k
& SSL_kKRB5
)
2307 krb5_error_code krb5rc
;
2308 KSSL_CTX
*kssl_ctx
= s
->kssl_ctx
;
2309 /* krb5_data krb5_ap_req; */
2310 krb5_data
*enc_ticket
;
2311 krb5_data authenticator
, *authp
= NULL
;
2312 EVP_CIPHER_CTX ciph_ctx
;
2313 const EVP_CIPHER
*enc
= NULL
;
2314 unsigned char iv
[EVP_MAX_IV_LENGTH
];
2315 unsigned char tmp_buf
[SSL_MAX_MASTER_KEY_LENGTH
];
2316 unsigned char epms
[SSL_MAX_MASTER_KEY_LENGTH
2317 + EVP_MAX_IV_LENGTH
];
2318 int padl
, outl
= sizeof(epms
);
2320 EVP_CIPHER_CTX_init(&ciph_ctx
);
2323 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2325 #endif /* KSSL_DEBUG */
2329 if (KRB5SENDAUTH
) authp
= &authenticator
;
2330 #endif /* KRB5SENDAUTH */
2332 krb5rc
= kssl_cget_tkt(kssl_ctx
, &enc_ticket
, authp
,
2334 enc
= kssl_map_enc(kssl_ctx
->enctype
);
2339 printf("kssl_cget_tkt rtn %d\n", krb5rc
);
2340 if (krb5rc
&& kssl_err
.text
)
2341 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err
.text
);
2343 #endif /* KSSL_DEBUG */
2347 ssl3_send_alert(s
,SSL3_AL_FATAL
,
2348 SSL_AD_HANDSHAKE_FAILURE
);
2349 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2354 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2355 ** in place of RFC 2712 KerberosWrapper, as in:
2357 ** Send ticket (copy to *p, set n = length)
2358 ** n = krb5_ap_req.length;
2359 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2360 ** if (krb5_ap_req.data)
2361 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2363 ** Now using real RFC 2712 KerberosWrapper
2364 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2365 ** Note: 2712 "opaque" types are here replaced
2366 ** with a 2-byte length followed by the value.
2368 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2369 ** Where "xx xx" = length bytes. Shown here with
2370 ** optional authenticator omitted.
2373 /* KerberosWrapper.Ticket */
2374 s2n(enc_ticket
->length
,p
);
2375 memcpy(p
, enc_ticket
->data
, enc_ticket
->length
);
2376 p
+= enc_ticket
->length
;
2377 n
= enc_ticket
->length
+ 2;
2379 /* KerberosWrapper.Authenticator */
2380 if (authp
&& authp
->length
)
2382 s2n(authp
->length
,p
);
2383 memcpy(p
, authp
->data
, authp
->length
);
2385 n
+= authp
->length
+ 2;
2393 s2n(0,p
);/* null authenticator length */
2397 tmp_buf
[0]=s
->client_version
>>8;
2398 tmp_buf
[1]=s
->client_version
&0xff;
2399 if (RAND_bytes(&(tmp_buf
[2]),sizeof tmp_buf
-2) <= 0)
2402 /* 20010420 VRS. Tried it this way; failed.
2403 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2404 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2405 ** kssl_ctx->length);
2406 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2409 memset(iv
, 0, sizeof iv
); /* per RFC 1510 */
2410 EVP_EncryptInit_ex(&ciph_ctx
,enc
, NULL
,
2412 EVP_EncryptUpdate(&ciph_ctx
,epms
,&outl
,tmp_buf
,
2414 EVP_EncryptFinal_ex(&ciph_ctx
,&(epms
[outl
]),&padl
);
2416 if (outl
> (int)sizeof epms
)
2418 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
2421 EVP_CIPHER_CTX_cleanup(&ciph_ctx
);
2423 /* KerberosWrapper.EncryptedPreMasterSecret */
2425 memcpy(p
, epms
, outl
);
2429 s
->session
->master_key_length
=
2430 s
->method
->ssl3_enc
->generate_master_secret(s
,
2431 s
->session
->master_key
,
2432 tmp_buf
, sizeof tmp_buf
);
2434 OPENSSL_cleanse(tmp_buf
, sizeof tmp_buf
);
2435 OPENSSL_cleanse(epms
, outl
);
2438 #ifndef OPENSSL_NO_DH
2439 else if (alg_k
& (SSL_kEDH
|SSL_kDHr
|SSL_kDHd
))
2441 DH
*dh_srvr
,*dh_clnt
;
2442 SESS_CERT
*scert
= s
->session
->sess_cert
;
2446 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
2447 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_UNEXPECTED_MESSAGE
);
2451 if (scert
->peer_dh_tmp
!= NULL
)
2452 dh_srvr
=scert
->peer_dh_tmp
;
2455 /* we get them from the cert */
2456 int idx
= scert
->peer_cert_type
;
2457 EVP_PKEY
*spkey
= NULL
;
2460 spkey
= X509_get_pubkey(
2461 scert
->peer_pkeys
[idx
].x509
);
2464 dh_srvr
= EVP_PKEY_get1_DH(spkey
);
2465 EVP_PKEY_free(spkey
);
2467 if (dh_srvr
== NULL
)
2469 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2470 ERR_R_INTERNAL_ERROR
);
2474 if (s
->s3
->flags
& TLS1_FLAGS_SKIP_CERT_VERIFY
)
2476 /* Use client certificate key */
2477 EVP_PKEY
*clkey
= s
->cert
->key
->privatekey
;
2480 dh_clnt
= EVP_PKEY_get1_DH(clkey
);
2481 if (dh_clnt
== NULL
)
2483 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2484 ERR_R_INTERNAL_ERROR
);
2490 /* generate a new random key */
2491 if ((dh_clnt
=DHparams_dup(dh_srvr
)) == NULL
)
2493 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2496 if (!DH_generate_key(dh_clnt
))
2498 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2504 /* use the 'p' output buffer for the DH key, but
2505 * make sure to clear it out afterwards */
2507 n
=DH_compute_key(p
,dh_srvr
->pub_key
,dh_clnt
);
2508 if (scert
->peer_dh_tmp
== NULL
)
2513 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2518 /* generate master key from the result */
2519 s
->session
->master_key_length
=
2520 s
->method
->ssl3_enc
->generate_master_secret(s
,
2521 s
->session
->master_key
,p
,n
);
2525 if (s
->s3
->flags
& TLS1_FLAGS_SKIP_CERT_VERIFY
)
2529 /* send off the data */
2530 n
=BN_num_bytes(dh_clnt
->pub_key
);
2532 BN_bn2bin(dh_clnt
->pub_key
,p
);
2538 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2542 #ifndef OPENSSL_NO_ECDH
2543 else if (alg_k
& (SSL_kEECDH
|SSL_kECDHr
|SSL_kECDHe
))
2545 const EC_GROUP
*srvr_group
= NULL
;
2547 int ecdh_clnt_cert
= 0;
2550 /* Did we send out the client's
2551 * ECDH share for use in premaster
2552 * computation as part of client certificate?
2553 * If so, set ecdh_clnt_cert to 1.
2555 if ((alg_k
& (SSL_kECDHr
|SSL_kECDHe
)) && (s
->cert
!= NULL
))
2557 /* XXX: For now, we do not support client
2558 * authentication using ECDH certificates.
2559 * To add such support, one needs to add
2560 * code that checks for appropriate
2561 * conditions and sets ecdh_clnt_cert to 1.
2562 * For example, the cert have an ECC
2563 * key on the same curve as the server's
2564 * and the key should be authorized for
2567 * One also needs to add code in ssl3_connect
2568 * to skip sending the certificate verify
2571 * if ((s->cert->key->privatekey != NULL) &&
2572 * (s->cert->key->privatekey->type ==
2573 * EVP_PKEY_EC) && ...)
2574 * ecdh_clnt_cert = 1;
2578 if (s
->session
->sess_cert
->peer_ecdh_tmp
!= NULL
)
2580 tkey
= s
->session
->sess_cert
->peer_ecdh_tmp
;
2584 /* Get the Server Public Key from Cert */
2585 srvr_pub_pkey
= X509_get_pubkey(s
->session
-> \
2586 sess_cert
->peer_pkeys
[SSL_PKEY_ECC
].x509
);
2587 if ((srvr_pub_pkey
== NULL
) ||
2588 (srvr_pub_pkey
->type
!= EVP_PKEY_EC
) ||
2589 (srvr_pub_pkey
->pkey
.ec
== NULL
))
2591 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2592 ERR_R_INTERNAL_ERROR
);
2596 tkey
= srvr_pub_pkey
->pkey
.ec
;
2599 srvr_group
= EC_KEY_get0_group(tkey
);
2600 srvr_ecpoint
= EC_KEY_get0_public_key(tkey
);
2602 if ((srvr_group
== NULL
) || (srvr_ecpoint
== NULL
))
2604 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2605 ERR_R_INTERNAL_ERROR
);
2609 if ((clnt_ecdh
=EC_KEY_new()) == NULL
)
2611 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2615 if (!EC_KEY_set_group(clnt_ecdh
, srvr_group
))
2617 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_EC_LIB
);
2622 /* Reuse key info from our certificate
2623 * We only need our private key to perform
2624 * the ECDH computation.
2626 const BIGNUM
*priv_key
;
2627 tkey
= s
->cert
->key
->privatekey
->pkey
.ec
;
2628 priv_key
= EC_KEY_get0_private_key(tkey
);
2629 if (priv_key
== NULL
)
2631 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2634 if (!EC_KEY_set_private_key(clnt_ecdh
, priv_key
))
2636 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_EC_LIB
);
2642 /* Generate a new ECDH key pair */
2643 if (!(EC_KEY_generate_key(clnt_ecdh
)))
2645 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
, ERR_R_ECDH_LIB
);
2650 /* use the 'p' output buffer for the ECDH key, but
2651 * make sure to clear it out afterwards
2654 field_size
= EC_GROUP_get_degree(srvr_group
);
2655 if (field_size
<= 0)
2657 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2661 n
=ECDH_compute_key(p
, (field_size
+7)/8, srvr_ecpoint
, clnt_ecdh
, NULL
);
2664 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2669 /* generate master key from the result */
2670 s
->session
->master_key_length
= s
->method
->ssl3_enc \
2671 -> generate_master_secret(s
,
2672 s
->session
->master_key
,
2675 memset(p
, 0, n
); /* clean up */
2679 /* Send empty client key exch message */
2684 /* First check the size of encoding and
2685 * allocate memory accordingly.
2688 EC_POINT_point2oct(srvr_group
,
2689 EC_KEY_get0_public_key(clnt_ecdh
),
2690 POINT_CONVERSION_UNCOMPRESSED
,
2693 encodedPoint
= (unsigned char *)
2694 OPENSSL_malloc(encoded_pt_len
*
2695 sizeof(unsigned char));
2696 bn_ctx
= BN_CTX_new();
2697 if ((encodedPoint
== NULL
) ||
2700 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2704 /* Encode the public key */
2705 n
= EC_POINT_point2oct(srvr_group
,
2706 EC_KEY_get0_public_key(clnt_ecdh
),
2707 POINT_CONVERSION_UNCOMPRESSED
,
2708 encodedPoint
, encoded_pt_len
, bn_ctx
);
2710 *p
= n
; /* length of encoded point */
2711 /* Encoded point will be copied here */
2713 /* copy the point */
2714 memcpy((unsigned char *)p
, encodedPoint
, n
);
2715 /* increment n to account for length field */
2719 /* Free allocated memory */
2720 BN_CTX_free(bn_ctx
);
2721 if (encodedPoint
!= NULL
) OPENSSL_free(encodedPoint
);
2722 if (clnt_ecdh
!= NULL
)
2723 EC_KEY_free(clnt_ecdh
);
2724 EVP_PKEY_free(srvr_pub_pkey
);
2726 #endif /* !OPENSSL_NO_ECDH */
2727 else if (alg_k
& SSL_kGOST
)
2729 /* GOST key exchange message creation */
2730 EVP_PKEY_CTX
*pkey_ctx
;
2733 unsigned int md_len
;
2735 unsigned char premaster_secret
[32],shared_ukm
[32], tmp
[256];
2736 EVP_MD_CTX
*ukm_hash
;
2739 /* Get server sertificate PKEY and create ctx from it */
2740 peer_cert
=s
->session
->sess_cert
->peer_pkeys
[(keytype
=SSL_PKEY_GOST01
)].x509
;
2742 peer_cert
=s
->session
->sess_cert
->peer_pkeys
[(keytype
=SSL_PKEY_GOST94
)].x509
;
2744 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER
);
2748 pkey_ctx
=EVP_PKEY_CTX_new(pub_key
=X509_get_pubkey(peer_cert
),NULL
);
2749 /* If we have send a certificate, and certificate key
2751 * parameters match those of server certificate, use
2752 * certificate key for key exchange
2755 /* Otherwise, generate ephemeral key pair */
2757 EVP_PKEY_encrypt_init(pkey_ctx
);
2758 /* Generate session key */
2759 RAND_bytes(premaster_secret
,32);
2760 /* If we have client certificate, use its secret as peer key */
2761 if (s
->s3
->tmp
.cert_req
&& s
->cert
->key
->privatekey
) {
2762 if (EVP_PKEY_derive_set_peer(pkey_ctx
,s
->cert
->key
->privatekey
) <=0) {
2763 /* If there was an error - just ignore it. Ephemeral key
2769 /* Compute shared IV and store it in algorithm-specific
2771 ukm_hash
= EVP_MD_CTX_create();
2772 EVP_DigestInit(ukm_hash
,EVP_get_digestbynid(NID_id_GostR3411_94
));
2773 EVP_DigestUpdate(ukm_hash
,s
->s3
->client_random
,SSL3_RANDOM_SIZE
);
2774 EVP_DigestUpdate(ukm_hash
,s
->s3
->server_random
,SSL3_RANDOM_SIZE
);
2775 EVP_DigestFinal_ex(ukm_hash
, shared_ukm
, &md_len
);
2776 EVP_MD_CTX_destroy(ukm_hash
);
2777 if (EVP_PKEY_CTX_ctrl(pkey_ctx
,-1,EVP_PKEY_OP_ENCRYPT
,EVP_PKEY_CTRL_SET_IV
,
2779 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2783 /* Make GOST keytransport blob message */
2784 /*Encapsulate it into sequence */
2785 *(p
++)=V_ASN1_SEQUENCE
| V_ASN1_CONSTRUCTED
;
2787 if (EVP_PKEY_encrypt(pkey_ctx
,tmp
,&msglen
,premaster_secret
,32)<0) {
2788 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2795 *(p
++)= msglen
& 0xff;
2800 *(p
++)= msglen
& 0xff;
2803 memcpy(p
, tmp
, msglen
);
2804 /* Check if pubkey from client certificate was used */
2805 if (EVP_PKEY_CTX_ctrl(pkey_ctx
, -1, -1, EVP_PKEY_CTRL_PEER_KEY
, 2, NULL
) > 0)
2807 /* Set flag "skip certificate verify" */
2808 s
->s3
->flags
|= TLS1_FLAGS_SKIP_CERT_VERIFY
;
2810 EVP_PKEY_CTX_free(pkey_ctx
);
2811 s
->session
->master_key_length
=
2812 s
->method
->ssl3_enc
->generate_master_secret(s
,
2813 s
->session
->master_key
,premaster_secret
,32);
2814 EVP_PKEY_free(pub_key
);
2817 #ifndef OPENSSL_NO_SRP
2818 else if (alg_k
& SSL_kSRP
)
2820 if (s
->srp_ctx
.A
!= NULL
)
2822 /* send off the data */
2823 n
=BN_num_bytes(s
->srp_ctx
.A
);
2825 BN_bn2bin(s
->srp_ctx
.A
,p
);
2830 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
2833 if (s
->session
->srp_username
!= NULL
)
2834 OPENSSL_free(s
->session
->srp_username
);
2835 s
->session
->srp_username
= BUF_strdup(s
->srp_ctx
.login
);
2836 if (s
->session
->srp_username
== NULL
)
2838 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2839 ERR_R_MALLOC_FAILURE
);
2843 if ((s
->session
->master_key_length
= SRP_generate_client_master_secret(s
,s
->session
->master_key
))<0)
2845 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
2850 #ifndef OPENSSL_NO_PSK
2851 else if (alg_k
& SSL_kPSK
)
2853 char identity
[PSK_MAX_IDENTITY_LEN
];
2854 unsigned char *t
= NULL
;
2855 unsigned char psk_or_pre_ms
[PSK_MAX_PSK_LEN
*2+4];
2856 unsigned int pre_ms_len
= 0, psk_len
= 0;
2860 if (s
->psk_client_callback
== NULL
)
2862 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2863 SSL_R_PSK_NO_CLIENT_CB
);
2867 psk_len
= s
->psk_client_callback(s
, s
->ctx
->psk_identity_hint
,
2868 identity
, PSK_MAX_IDENTITY_LEN
,
2869 psk_or_pre_ms
, sizeof(psk_or_pre_ms
));
2870 if (psk_len
> PSK_MAX_PSK_LEN
)
2872 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2873 ERR_R_INTERNAL_ERROR
);
2876 else if (psk_len
== 0)
2878 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2879 SSL_R_PSK_IDENTITY_NOT_FOUND
);
2883 /* create PSK pre_master_secret */
2884 pre_ms_len
= 2+psk_len
+2+psk_len
;
2886 memmove(psk_or_pre_ms
+psk_len
+4, psk_or_pre_ms
, psk_len
);
2888 memset(t
, 0, psk_len
);
2892 if (s
->session
->psk_identity_hint
!= NULL
)
2893 OPENSSL_free(s
->session
->psk_identity_hint
);
2894 s
->session
->psk_identity_hint
= BUF_strdup(s
->ctx
->psk_identity_hint
);
2895 if (s
->ctx
->psk_identity_hint
!= NULL
&&
2896 s
->session
->psk_identity_hint
== NULL
)
2898 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2899 ERR_R_MALLOC_FAILURE
);
2903 if (s
->session
->psk_identity
!= NULL
)
2904 OPENSSL_free(s
->session
->psk_identity
);
2905 s
->session
->psk_identity
= BUF_strdup(identity
);
2906 if (s
->session
->psk_identity
== NULL
)
2908 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2909 ERR_R_MALLOC_FAILURE
);
2913 s
->session
->master_key_length
=
2914 s
->method
->ssl3_enc
->generate_master_secret(s
,
2915 s
->session
->master_key
,
2916 psk_or_pre_ms
, pre_ms_len
);
2917 n
= strlen(identity
);
2919 memcpy(p
, identity
, n
);
2923 OPENSSL_cleanse(identity
, PSK_MAX_IDENTITY_LEN
);
2924 OPENSSL_cleanse(psk_or_pre_ms
, sizeof(psk_or_pre_ms
));
2927 ssl3_send_alert(s
, SSL3_AL_FATAL
, SSL_AD_HANDSHAKE_FAILURE
);
2934 ssl3_send_alert(s
, SSL3_AL_FATAL
,
2935 SSL_AD_HANDSHAKE_FAILURE
);
2936 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2937 ERR_R_INTERNAL_ERROR
);
2941 *(d
++)=SSL3_MT_CLIENT_KEY_EXCHANGE
;
2944 s
->state
=SSL3_ST_CW_KEY_EXCH_B
;
2945 /* number of bytes to write */
2950 /* SSL3_ST_CW_KEY_EXCH_B */
2951 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
2953 #ifndef OPENSSL_NO_ECDH
2954 BN_CTX_free(bn_ctx
);
2955 if (encodedPoint
!= NULL
) OPENSSL_free(encodedPoint
);
2956 if (clnt_ecdh
!= NULL
)
2957 EC_KEY_free(clnt_ecdh
);
2958 EVP_PKEY_free(srvr_pub_pkey
);
2963 int ssl3_send_client_verify(SSL
*s
)
2965 unsigned char *p
,*d
;
2966 unsigned char data
[MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
];
2968 EVP_PKEY_CTX
*pctx
=NULL
;
2974 EVP_MD_CTX_init(&mctx
);
2976 if (s
->state
== SSL3_ST_CW_CERT_VRFY_A
)
2978 d
=(unsigned char *)s
->init_buf
->data
;
2980 pkey
=s
->cert
->key
->privatekey
;
2981 /* Create context from key and test if sha1 is allowed as digest */
2982 pctx
= EVP_PKEY_CTX_new(pkey
,NULL
);
2983 EVP_PKEY_sign_init(pctx
);
2984 if (EVP_PKEY_CTX_set_signature_md(pctx
, EVP_sha1())>0)
2986 if (TLS1_get_version(s
) < TLS1_2_VERSION
)
2987 s
->method
->ssl3_enc
->cert_verify_mac(s
,
2989 &(data
[MD5_DIGEST_LENGTH
]));
2995 /* For TLS v1.2 send signature algorithm and signature
2996 * using agreed digest and cached handshake records.
2998 if (TLS1_get_version(s
) >= TLS1_2_VERSION
)
3002 const EVP_MD
*md
= s
->cert
->key
->digest
;
3003 hdatalen
= BIO_get_mem_data(s
->s3
->handshake_buffer
,
3005 if (hdatalen
<= 0 || !tls12_get_sigandhash(p
, pkey
, md
))
3007 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3008 ERR_R_INTERNAL_ERROR
);
3013 fprintf(stderr
, "Using TLS 1.2 with client alg %s\n",
3016 if (!EVP_SignInit_ex(&mctx
, md
, NULL
)
3017 || !EVP_SignUpdate(&mctx
, hdata
, hdatalen
)
3018 || !EVP_SignFinal(&mctx
, p
+ 2, &u
, pkey
))
3020 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3026 if (!ssl3_digest_cached_records(s
))
3030 #ifndef OPENSSL_NO_RSA
3031 if (pkey
->type
== EVP_PKEY_RSA
)
3033 s
->method
->ssl3_enc
->cert_verify_mac(s
,
3036 if (RSA_sign(NID_md5_sha1
, data
,
3037 MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
,
3038 &(p
[2]), &u
, pkey
->pkey
.rsa
) <= 0 )
3040 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_RSA_LIB
);
3048 #ifndef OPENSSL_NO_DSA
3049 if (pkey
->type
== EVP_PKEY_DSA
)
3051 if (!DSA_sign(pkey
->save_type
,
3052 &(data
[MD5_DIGEST_LENGTH
]),
3053 SHA_DIGEST_LENGTH
,&(p
[2]),
3054 (unsigned int *)&j
,pkey
->pkey
.dsa
))
3056 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_DSA_LIB
);
3064 #ifndef OPENSSL_NO_ECDSA
3065 if (pkey
->type
== EVP_PKEY_EC
)
3067 if (!ECDSA_sign(pkey
->save_type
,
3068 &(data
[MD5_DIGEST_LENGTH
]),
3069 SHA_DIGEST_LENGTH
,&(p
[2]),
3070 (unsigned int *)&j
,pkey
->pkey
.ec
))
3072 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3081 if (pkey
->type
== NID_id_GostR3410_94
|| pkey
->type
== NID_id_GostR3410_2001
)
3083 unsigned char signbuf
[64];
3086 s
->method
->ssl3_enc
->cert_verify_mac(s
,
3087 NID_id_GostR3411_94
,
3089 if (EVP_PKEY_sign(pctx
, signbuf
, &sigsize
, data
, 32) <= 0) {
3090 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
3091 ERR_R_INTERNAL_ERROR
);
3094 for (i
=63,j
=0; i
>=0; j
++, i
--) {
3102 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_INTERNAL_ERROR
);
3105 *(d
++)=SSL3_MT_CERTIFICATE_VERIFY
;
3108 s
->state
=SSL3_ST_CW_CERT_VRFY_B
;
3109 s
->init_num
=(int)n
+4;
3112 EVP_MD_CTX_cleanup(&mctx
);
3113 EVP_PKEY_CTX_free(pctx
);
3114 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
3116 EVP_MD_CTX_cleanup(&mctx
);
3117 EVP_PKEY_CTX_free(pctx
);
3121 /* Check a certificate can be used for client authentication. Currently
3122 * just check cert exists and if static DH client certificates can be used.
3124 static int ssl3_check_client_certificate(SSL
*s
)
3126 unsigned long alg_k
;
3127 if (!s
->cert
|| !s
->cert
->key
->x509
|| !s
->cert
->key
->privatekey
)
3129 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
3130 /* See if we can use client certificate for fixed DH */
3131 if (alg_k
& (SSL_kDHr
|SSL_kDHd
))
3133 SESS_CERT
*scert
= s
->session
->sess_cert
;
3134 int i
= scert
->peer_cert_type
;
3135 EVP_PKEY
*clkey
= NULL
, *spkey
= NULL
;
3136 clkey
= s
->cert
->key
->privatekey
;
3137 /* If client key not DH assume it can be used */
3138 if (EVP_PKEY_id(clkey
) != EVP_PKEY_DH
)
3141 spkey
= X509_get_pubkey(scert
->peer_pkeys
[i
].x509
);
3144 /* Compare server and client parameters */
3145 i
= EVP_PKEY_cmp_parameters(clkey
, spkey
);
3146 EVP_PKEY_free(spkey
);
3150 s
->s3
->flags
|= TLS1_FLAGS_SKIP_CERT_VERIFY
;
3155 int ssl3_send_client_certificate(SSL
*s
)
3158 EVP_PKEY
*pkey
=NULL
;
3162 if (s
->state
== SSL3_ST_CW_CERT_A
)
3164 if (ssl3_check_client_certificate(s
))
3165 s
->state
=SSL3_ST_CW_CERT_C
;
3167 s
->state
=SSL3_ST_CW_CERT_B
;
3170 /* We need to get a client cert */
3171 if (s
->state
== SSL3_ST_CW_CERT_B
)
3173 /* If we get an error, we need to
3174 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3175 * We then get retied later */
3177 i
= ssl_do_client_cert_cb(s
, &x509
, &pkey
);
3180 s
->rwstate
=SSL_X509_LOOKUP
;
3183 s
->rwstate
=SSL_NOTHING
;
3184 if ((i
== 1) && (pkey
!= NULL
) && (x509
!= NULL
))
3186 s
->state
=SSL3_ST_CW_CERT_B
;
3187 if ( !SSL_use_certificate(s
,x509
) ||
3188 !SSL_use_PrivateKey(s
,pkey
))
3194 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE
,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK
);
3197 if (x509
!= NULL
) X509_free(x509
);
3198 if (pkey
!= NULL
) EVP_PKEY_free(pkey
);
3199 if (i
&& !ssl3_check_client_certificate(s
))
3203 if (s
->version
== SSL3_VERSION
)
3205 s
->s3
->tmp
.cert_req
=0;
3206 ssl3_send_alert(s
,SSL3_AL_WARNING
,SSL_AD_NO_CERTIFICATE
);
3211 s
->s3
->tmp
.cert_req
=2;
3215 /* Ok, we have a cert */
3216 s
->state
=SSL3_ST_CW_CERT_C
;
3219 if (s
->state
== SSL3_ST_CW_CERT_C
)
3221 s
->state
=SSL3_ST_CW_CERT_D
;
3222 l
=ssl3_output_cert_chain(s
,
3223 (s
->s3
->tmp
.cert_req
== 2)?NULL
:s
->cert
->key
);
3227 /* SSL3_ST_CW_CERT_D */
3228 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
3231 #define has_bits(i,m) (((i)&(m)) == (m))
3233 int ssl3_check_cert_and_algorithm(SSL
*s
)
3237 EVP_PKEY
*pkey
=NULL
;
3239 #ifndef OPENSSL_NO_RSA
3242 #ifndef OPENSSL_NO_DH
3246 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
3247 alg_a
=s
->s3
->tmp
.new_cipher
->algorithm_auth
;
3249 /* we don't have a certificate */
3250 if ((alg_a
& (SSL_aNULL
|SSL_aKRB5
)) || (alg_k
& SSL_kPSK
))
3253 sc
=s
->session
->sess_cert
;
3256 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,ERR_R_INTERNAL_ERROR
);
3260 #ifndef OPENSSL_NO_RSA
3261 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
3263 #ifndef OPENSSL_NO_DH
3264 dh
=s
->session
->sess_cert
->peer_dh_tmp
;
3267 /* This is the passed certificate */
3269 idx
=sc
->peer_cert_type
;
3270 #ifndef OPENSSL_NO_ECDH
3271 if (idx
== SSL_PKEY_ECC
)
3273 if (ssl_check_srvr_ecc_cert_and_alg(sc
->peer_pkeys
[idx
].x509
,
3275 { /* check failed */
3276 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_BAD_ECC_CERT
);
3285 pkey
=X509_get_pubkey(sc
->peer_pkeys
[idx
].x509
);
3286 i
=X509_certificate_type(sc
->peer_pkeys
[idx
].x509
,pkey
);
3287 EVP_PKEY_free(pkey
);
3290 /* Check that we have a certificate if we require one */
3291 if ((alg_a
& SSL_aRSA
) && !has_bits(i
,EVP_PK_RSA
|EVP_PKT_SIGN
))
3293 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_SIGNING_CERT
);
3296 #ifndef OPENSSL_NO_DSA
3297 else if ((alg_a
& SSL_aDSS
) && !has_bits(i
,EVP_PK_DSA
|EVP_PKT_SIGN
))
3299 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DSA_SIGNING_CERT
);
3303 #ifndef OPENSSL_NO_RSA
3304 if ((alg_k
& SSL_kRSA
) &&
3305 !(has_bits(i
,EVP_PK_RSA
|EVP_PKT_ENC
) || (rsa
!= NULL
)))
3307 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_ENCRYPTING_CERT
);
3311 #ifndef OPENSSL_NO_DH
3312 if ((alg_k
& SSL_kEDH
) &&
3313 !(has_bits(i
,EVP_PK_DH
|EVP_PKT_EXCH
) || (dh
!= NULL
)))
3315 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_KEY
);
3318 else if ((alg_k
& SSL_kDHr
) && (TLS1_get_version(s
) < TLS1_2_VERSION
) &&
3319 !has_bits(i
,EVP_PK_DH
|EVP_PKS_RSA
))
3321 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_RSA_CERT
);
3324 #ifndef OPENSSL_NO_DSA
3325 else if ((alg_k
& SSL_kDHd
) && (TLS1_get_version(s
) < TLS1_2_VERSION
) &&
3326 !has_bits(i
,EVP_PK_DH
|EVP_PKS_DSA
))
3328 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_DSA_CERT
);
3334 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) && !has_bits(i
,EVP_PKT_EXP
))
3336 #ifndef OPENSSL_NO_RSA
3337 if (alg_k
& SSL_kRSA
)
3340 || RSA_size(rsa
)*8 > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
3342 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_RSA_KEY
);
3348 #ifndef OPENSSL_NO_DH
3349 if (alg_k
& (SSL_kEDH
|SSL_kDHr
|SSL_kDHd
))
3352 || DH_size(dh
)*8 > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
3354 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_DH_KEY
);
3361 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE
);
3367 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_HANDSHAKE_FAILURE
);
3372 /* Check to see if handshake is full or resumed. Usually this is just a
3373 * case of checking to see if a cache hit has occurred. In the case of
3374 * session tickets we have to check the next message to be sure.
3377 #ifndef OPENSSL_NO_TLSEXT
3378 # ifndef OPENSSL_NO_NEXTPROTONEG
3379 int ssl3_send_next_proto(SSL
*s
)
3381 unsigned int len
, padding_len
;
3384 if (s
->state
== SSL3_ST_CW_NEXT_PROTO_A
)
3386 len
= s
->next_proto_negotiated_len
;
3387 padding_len
= 32 - ((len
+ 2) % 32);
3388 d
= (unsigned char *)s
->init_buf
->data
;
3390 memcpy(d
+ 5, s
->next_proto_negotiated
, len
);
3391 d
[5 + len
] = padding_len
;
3392 memset(d
+ 6 + len
, 0, padding_len
);
3393 *(d
++)=SSL3_MT_NEXT_PROTO
;
3394 l2n3(2 + len
+ padding_len
, d
);
3395 s
->state
= SSL3_ST_CW_NEXT_PROTO_B
;
3396 s
->init_num
= 4 + 2 + len
+ padding_len
;
3400 return ssl3_do_write(s
, SSL3_RT_HANDSHAKE
);
3404 int ssl3_check_finished(SSL
*s
)
3408 /* If we have no ticket it cannot be a resumed session. */
3409 if (!s
->session
->tlsext_tick
)
3411 /* this function is called when we really expect a Certificate
3412 * message, so permit appropriate message length */
3413 n
=s
->method
->ssl_get_message(s
,
3419 if (!ok
) return((int)n
);
3420 s
->s3
->tmp
.reuse_message
= 1;
3421 if ((s
->s3
->tmp
.message_type
== SSL3_MT_FINISHED
)
3422 || (s
->s3
->tmp
.message_type
== SSL3_MT_NEWSESSION_TICKET
))
3429 int ssl_do_client_cert_cb(SSL
*s
, X509
**px509
, EVP_PKEY
**ppkey
)
3432 #ifndef OPENSSL_NO_ENGINE
3433 if (s
->ctx
->client_cert_engine
)
3435 i
= ENGINE_load_ssl_client_cert(s
->ctx
->client_cert_engine
, s
,
3436 SSL_get_client_CA_list(s
),
3437 px509
, ppkey
, NULL
, NULL
, NULL
);
3442 if (s
->ctx
->client_cert_cb
)
3443 i
= s
->ctx
->client_cert_cb(s
,px509
,ppkey
);