1 /* ssl/s3_srvr.c -*- mode:C; c-file-style: "eay" -*- */
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
151 #define REUSE_CIPHER_BUG
152 #define NETSCAPE_HANG_BUG
155 #include "ssl_locl.h"
156 #include "kssl_lcl.h"
157 #include <openssl/buffer.h>
158 #include <openssl/rand.h>
159 #include <openssl/objects.h>
160 #include <openssl/evp.h>
161 #include <openssl/hmac.h>
162 #include <openssl/x509.h>
163 #ifndef OPENSSL_NO_DH
164 #include <openssl/dh.h>
166 #include <openssl/bn.h>
167 #ifndef OPENSSL_NO_KRB5
168 #include <openssl/krb5_asn.h>
170 #include <openssl/md5.h>
172 static const SSL_METHOD
*ssl3_get_server_method(int ver
);
174 static const SSL_METHOD
*ssl3_get_server_method(int ver
)
176 if (ver
== SSL3_VERSION
)
177 return(SSLv3_server_method());
182 IMPLEMENT_ssl3_meth_func(SSLv3_server_method
,
184 ssl_undefined_function
,
185 ssl3_get_server_method
)
187 int ssl3_accept(SSL
*s
)
190 unsigned long alg_k
,Time
=(unsigned long)time(NULL
);
191 void (*cb
)(const SSL
*ssl
,int type
,int val
)=NULL
;
194 int new_state
,state
,skip
=0;
196 RAND_add(&Time
,sizeof(Time
),0);
200 if (s
->info_callback
!= NULL
)
202 else if (s
->ctx
->info_callback
!= NULL
)
203 cb
=s
->ctx
->info_callback
;
205 /* init things to blank */
207 if (!SSL_in_init(s
) || SSL_in_before(s
)) SSL_clear(s
);
211 SSLerr(SSL_F_SSL3_ACCEPT
,SSL_R_NO_CERTIFICATE_SET
);
221 case SSL_ST_RENEGOTIATE
:
223 /* s->state=SSL_ST_ACCEPT; */
227 case SSL_ST_BEFORE
|SSL_ST_ACCEPT
:
228 case SSL_ST_OK
|SSL_ST_ACCEPT
:
231 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_START
,1);
233 if ((s
->version
>>8) != 3)
235 SSLerr(SSL_F_SSL3_ACCEPT
, ERR_R_INTERNAL_ERROR
);
238 s
->type
=SSL_ST_ACCEPT
;
240 if (s
->init_buf
== NULL
)
242 if ((buf
=BUF_MEM_new()) == NULL
)
247 if (!BUF_MEM_grow(buf
,SSL3_RT_MAX_PLAIN_LENGTH
))
255 if (!ssl3_setup_buffers(s
))
263 if (s
->state
!= SSL_ST_RENEGOTIATE
)
265 /* Ok, we now need to push on a buffering BIO so that
266 * the output is sent in a way that TCP likes :-)
268 if (!ssl_init_wbio_buffer(s
,1)) { ret
= -1; goto end
; }
270 ssl3_init_finished_mac(s
);
271 s
->state
=SSL3_ST_SR_CLNT_HELLO_A
;
272 s
->ctx
->stats
.sess_accept
++;
276 /* s->state == SSL_ST_RENEGOTIATE,
277 * we will just send a HelloRequest */
278 s
->ctx
->stats
.sess_accept_renegotiate
++;
279 s
->state
=SSL3_ST_SW_HELLO_REQ_A
;
283 case SSL3_ST_SW_HELLO_REQ_A
:
284 case SSL3_ST_SW_HELLO_REQ_B
:
287 ret
=ssl3_send_hello_request(s
);
288 if (ret
<= 0) goto end
;
289 s
->s3
->tmp
.next_state
=SSL3_ST_SW_HELLO_REQ_C
;
290 s
->state
=SSL3_ST_SW_FLUSH
;
293 ssl3_init_finished_mac(s
);
296 case SSL3_ST_SW_HELLO_REQ_C
:
300 case SSL3_ST_SR_CLNT_HELLO_A
:
301 case SSL3_ST_SR_CLNT_HELLO_B
:
302 case SSL3_ST_SR_CLNT_HELLO_C
:
305 ret
=ssl3_get_client_hello(s
);
306 if (ret
<= 0) goto end
;
309 s
->state
=SSL3_ST_SW_SRVR_HELLO_A
;
313 case SSL3_ST_SW_SRVR_HELLO_A
:
314 case SSL3_ST_SW_SRVR_HELLO_B
:
315 ret
=ssl3_send_server_hello(s
);
316 if (ret
<= 0) goto end
;
319 s
->state
=SSL3_ST_SW_CHANGE_A
;
321 s
->state
=SSL3_ST_SW_CERT_A
;
325 case SSL3_ST_SW_CERT_A
:
326 case SSL3_ST_SW_CERT_B
:
327 /* Check if it is anon DH or anon ECDH, */
328 /* normal PSK or KRB5 */
329 if (!(s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aNULL
)
330 && !(s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kPSK
)
331 && !(s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aKRB5
))
333 ret
=ssl3_send_server_certificate(s
);
334 if (ret
<= 0) goto end
;
335 #ifndef OPENSSL_NO_TLSEXT
336 if (s
->tlsext_status_expected
)
337 s
->state
=SSL3_ST_SW_CERT_STATUS_A
;
339 s
->state
=SSL3_ST_SW_KEY_EXCH_A
;
344 s
->state
=SSL3_ST_SW_KEY_EXCH_A
;
351 s
->state
=SSL3_ST_SW_KEY_EXCH_A
;
356 case SSL3_ST_SW_KEY_EXCH_A
:
357 case SSL3_ST_SW_KEY_EXCH_B
:
358 alg_k
= s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
360 /* clear this, it may get reset by
361 * send_server_key_exchange */
362 if ((s
->options
& SSL_OP_EPHEMERAL_RSA
)
363 #ifndef OPENSSL_NO_KRB5
364 && !(alg_k
& SSL_kKRB5
)
365 #endif /* OPENSSL_NO_KRB5 */
367 /* option SSL_OP_EPHEMERAL_RSA sends temporary RSA key
368 * even when forbidden by protocol specs
369 * (handshake may fail as clients are not required to
370 * be able to handle this) */
371 s
->s3
->tmp
.use_rsa_tmp
=1;
373 s
->s3
->tmp
.use_rsa_tmp
=0;
376 /* only send if a DH key exchange, fortezza or
377 * RSA but we have a sign only certificate
379 * PSK: may send PSK identity hints
381 * For ECC ciphersuites, we send a serverKeyExchange
382 * message only if the cipher suite is either
383 * ECDH-anon or ECDHE. In other cases, the
384 * server certificate contains the server's
385 * public key for key exchange.
387 if (s
->s3
->tmp
.use_rsa_tmp
388 /* PSK: send ServerKeyExchange if PSK identity
389 * hint if provided */
390 #ifndef OPENSSL_NO_PSK
391 || ((alg_k
& SSL_kPSK
) && s
->ctx
->psk_identity_hint
)
393 || (alg_k
& (SSL_kDHr
|SSL_kDHd
|SSL_kEDH
))
394 || (alg_k
& SSL_kEECDH
)
395 || ((alg_k
& SSL_kRSA
)
396 && (s
->cert
->pkeys
[SSL_PKEY_RSA_ENC
].privatekey
== NULL
397 || (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
)
398 && EVP_PKEY_size(s
->cert
->pkeys
[SSL_PKEY_RSA_ENC
].privatekey
)*8 > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
)
404 ret
=ssl3_send_server_key_exchange(s
);
405 if (ret
<= 0) goto end
;
410 s
->state
=SSL3_ST_SW_CERT_REQ_A
;
414 case SSL3_ST_SW_CERT_REQ_A
:
415 case SSL3_ST_SW_CERT_REQ_B
:
416 if (/* don't request cert unless asked for it: */
417 !(s
->verify_mode
& SSL_VERIFY_PEER
) ||
418 /* if SSL_VERIFY_CLIENT_ONCE is set,
419 * don't request cert during re-negotiation: */
420 ((s
->session
->peer
!= NULL
) &&
421 (s
->verify_mode
& SSL_VERIFY_CLIENT_ONCE
)) ||
422 /* never request cert in anonymous ciphersuites
423 * (see section "Certificate request" in SSL 3 drafts
424 * and in RFC 2246): */
425 ((s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aNULL
) &&
426 /* ... except when the application insists on verification
427 * (against the specs, but s3_clnt.c accepts this for SSL 3) */
428 !(s
->verify_mode
& SSL_VERIFY_FAIL_IF_NO_PEER_CERT
)) ||
429 /* never request cert in Kerberos ciphersuites */
430 (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aKRB5
)
431 /* With normal PSK Certificates and
432 * Certificate Requests are omitted */
433 || (s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kPSK
))
435 /* no cert request */
437 s
->s3
->tmp
.cert_request
=0;
438 s
->state
=SSL3_ST_SW_SRVR_DONE_A
;
442 s
->s3
->tmp
.cert_request
=1;
443 ret
=ssl3_send_certificate_request(s
);
444 if (ret
<= 0) goto end
;
445 #ifndef NETSCAPE_HANG_BUG
446 s
->state
=SSL3_ST_SW_SRVR_DONE_A
;
448 s
->state
=SSL3_ST_SW_FLUSH
;
449 s
->s3
->tmp
.next_state
=SSL3_ST_SR_CERT_A
;
455 case SSL3_ST_SW_SRVR_DONE_A
:
456 case SSL3_ST_SW_SRVR_DONE_B
:
457 ret
=ssl3_send_server_done(s
);
458 if (ret
<= 0) goto end
;
459 s
->s3
->tmp
.next_state
=SSL3_ST_SR_CERT_A
;
460 s
->state
=SSL3_ST_SW_FLUSH
;
464 case SSL3_ST_SW_FLUSH
:
465 /* number of bytes to be flushed */
466 num1
=BIO_ctrl(s
->wbio
,BIO_CTRL_INFO
,0,NULL
);
469 s
->rwstate
=SSL_WRITING
;
470 num1
=BIO_flush(s
->wbio
);
471 if (num1
<= 0) { ret
= -1; goto end
; }
472 s
->rwstate
=SSL_NOTHING
;
475 s
->state
=s
->s3
->tmp
.next_state
;
478 case SSL3_ST_SR_CERT_A
:
479 case SSL3_ST_SR_CERT_B
:
480 /* Check for second client hello (MS SGC) */
481 ret
= ssl3_check_client_hello(s
);
485 s
->state
= SSL3_ST_SR_CLNT_HELLO_C
;
487 if (s
->s3
->tmp
.cert_request
)
489 ret
=ssl3_get_client_certificate(s
);
490 if (ret
<= 0) goto end
;
493 s
->state
=SSL3_ST_SR_KEY_EXCH_A
;
497 case SSL3_ST_SR_KEY_EXCH_A
:
498 case SSL3_ST_SR_KEY_EXCH_B
:
499 ret
=ssl3_get_client_key_exchange(s
);
504 /* For the ECDH ciphersuites when
505 * the client sends its ECDH pub key in
506 * a certificate, the CertificateVerify
507 * message is not sent.
509 s
->state
=SSL3_ST_SR_FINISHED_A
;
516 s
->state
=SSL3_ST_SR_CERT_VRFY_A
;
519 /* We need to get hashes here so if there is
520 * a client cert, it can be verified
521 * FIXME - digest processing for CertificateVerify
522 * should be generalized. But it is next step
524 if (s
->s3
->handshake_buffer
)
525 ssl3_digest_cached_records(s
);
526 for (dgst_num
=0; dgst_num
<SSL_MAX_DIGEST
;dgst_num
++)
527 if (s
->s3
->handshake_dgst
[dgst_num
])
529 s
->method
->ssl3_enc
->cert_verify_mac(s
,EVP_MD_CTX_type(s
->s3
->handshake_dgst
[dgst_num
]),&(s
->s3
->tmp
.cert_verify_md
[offset
]));
530 offset
+=EVP_MD_CTX_size(s
->s3
->handshake_dgst
[dgst_num
]);
535 case SSL3_ST_SR_CERT_VRFY_A
:
536 case SSL3_ST_SR_CERT_VRFY_B
:
538 /* we should decide if we expected this one */
539 ret
=ssl3_get_cert_verify(s
);
540 if (ret
<= 0) goto end
;
542 s
->state
=SSL3_ST_SR_FINISHED_A
;
546 case SSL3_ST_SR_FINISHED_A
:
547 case SSL3_ST_SR_FINISHED_B
:
548 ret
=ssl3_get_finished(s
,SSL3_ST_SR_FINISHED_A
,
549 SSL3_ST_SR_FINISHED_B
);
550 if (ret
<= 0) goto end
;
553 #ifndef OPENSSL_NO_TLSEXT
554 else if (s
->tlsext_ticket_expected
)
555 s
->state
=SSL3_ST_SW_SESSION_TICKET_A
;
558 s
->state
=SSL3_ST_SW_CHANGE_A
;
562 #ifndef OPENSSL_NO_TLSEXT
563 case SSL3_ST_SW_SESSION_TICKET_A
:
564 case SSL3_ST_SW_SESSION_TICKET_B
:
565 ret
=ssl3_send_newsession_ticket(s
);
566 if (ret
<= 0) goto end
;
567 s
->state
=SSL3_ST_SW_CHANGE_A
;
571 case SSL3_ST_SW_CERT_STATUS_A
:
572 case SSL3_ST_SW_CERT_STATUS_B
:
573 ret
=ssl3_send_cert_status(s
);
574 if (ret
<= 0) goto end
;
575 s
->state
=SSL3_ST_SW_KEY_EXCH_A
;
581 case SSL3_ST_SW_CHANGE_A
:
582 case SSL3_ST_SW_CHANGE_B
:
584 s
->session
->cipher
=s
->s3
->tmp
.new_cipher
;
585 if (!s
->method
->ssl3_enc
->setup_key_block(s
))
586 { ret
= -1; goto end
; }
588 ret
=ssl3_send_change_cipher_spec(s
,
589 SSL3_ST_SW_CHANGE_A
,SSL3_ST_SW_CHANGE_B
);
591 if (ret
<= 0) goto end
;
592 s
->state
=SSL3_ST_SW_FINISHED_A
;
595 if (!s
->method
->ssl3_enc
->change_cipher_state(s
,
596 SSL3_CHANGE_CIPHER_SERVER_WRITE
))
604 case SSL3_ST_SW_FINISHED_A
:
605 case SSL3_ST_SW_FINISHED_B
:
606 ret
=ssl3_send_finished(s
,
607 SSL3_ST_SW_FINISHED_A
,SSL3_ST_SW_FINISHED_B
,
608 s
->method
->ssl3_enc
->server_finished_label
,
609 s
->method
->ssl3_enc
->server_finished_label_len
);
610 if (ret
<= 0) goto end
;
611 s
->state
=SSL3_ST_SW_FLUSH
;
613 s
->s3
->tmp
.next_state
=SSL3_ST_SR_FINISHED_A
;
615 s
->s3
->tmp
.next_state
=SSL_ST_OK
;
620 /* clean a few things up */
621 ssl3_cleanup_key_block(s
);
623 BUF_MEM_free(s
->init_buf
);
626 /* remove buffering on output */
627 ssl_free_wbio_buffer(s
);
631 if (s
->new_session
== 2) /* skipped if we just sent a HelloRequest */
633 /* actually not necessarily a 'new' session unless
634 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set */
638 ssl_update_cache(s
,SSL_SESS_CACHE_SERVER
);
640 s
->ctx
->stats
.sess_accept_good
++;
642 s
->handshake_func
=ssl3_accept
;
644 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_DONE
,1);
652 SSLerr(SSL_F_SSL3_ACCEPT
,SSL_R_UNKNOWN_STATE
);
658 if (!s
->s3
->tmp
.reuse_message
&& !skip
)
662 if ((ret
=BIO_flush(s
->wbio
)) <= 0)
667 if ((cb
!= NULL
) && (s
->state
!= state
))
671 cb(s
,SSL_CB_ACCEPT_LOOP
,1);
678 /* BIO_flush(s->wbio); */
682 cb(s
,SSL_CB_ACCEPT_EXIT
,ret
);
686 int ssl3_send_hello_request(SSL
*s
)
690 if (s
->state
== SSL3_ST_SW_HELLO_REQ_A
)
692 p
=(unsigned char *)s
->init_buf
->data
;
693 *(p
++)=SSL3_MT_HELLO_REQUEST
;
698 s
->state
=SSL3_ST_SW_HELLO_REQ_B
;
699 /* number of bytes to write */
704 /* SSL3_ST_SW_HELLO_REQ_B */
705 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
708 int ssl3_check_client_hello(SSL
*s
)
713 /* this function is called when we really expect a Certificate message,
714 * so permit appropriate message length */
715 n
=s
->method
->ssl_get_message(s
,
721 if (!ok
) return((int)n
);
722 s
->s3
->tmp
.reuse_message
= 1;
723 if (s
->s3
->tmp
.message_type
== SSL3_MT_CLIENT_HELLO
)
725 /* Throw away what we have done so far in the current handshake,
726 * which will now be aborted. (A full SSL_clear would be too much.)
727 * I hope that tmp.dh is the only thing that may need to be cleared
728 * when a handshake is not completed ... */
729 #ifndef OPENSSL_NO_DH
730 if (s
->s3
->tmp
.dh
!= NULL
)
732 DH_free(s
->s3
->tmp
.dh
);
733 s
->s3
->tmp
.dh
= NULL
;
741 int ssl3_get_client_hello(SSL
*s
)
743 int i
,j
,ok
,al
,ret
= -1;
744 unsigned int cookie_len
;
747 unsigned char *p
,*d
,*q
;
749 #ifndef OPENSSL_NO_COMP
752 STACK_OF(SSL_CIPHER
) *ciphers
=NULL
;
754 /* We do this so that we will respond with our native type.
755 * If we are TLSv1 and we get SSLv3, we will respond with TLSv1,
756 * This down switching should be handled by a different method.
757 * If we are SSLv3, we will respond with SSLv3, even if prompted with
760 if (s
->state
== SSL3_ST_SR_CLNT_HELLO_A
)
762 s
->state
=SSL3_ST_SR_CLNT_HELLO_B
;
765 n
=s
->method
->ssl_get_message(s
,
766 SSL3_ST_SR_CLNT_HELLO_B
,
767 SSL3_ST_SR_CLNT_HELLO_C
,
768 SSL3_MT_CLIENT_HELLO
,
769 SSL3_RT_MAX_PLAIN_LENGTH
,
772 if (!ok
) return((int)n
);
774 d
=p
=(unsigned char *)s
->init_msg
;
776 /* use version from inside client hello, not from record header
777 * (may differ: see RFC 2246, Appendix E, second paragraph) */
778 s
->client_version
=(((int)p
[0])<<8)|(int)p
[1];
781 if ((s
->version
== DTLS1_VERSION
&& s
->client_version
> s
->version
) ||
782 (s
->version
!= DTLS1_VERSION
&& s
->client_version
< s
->version
))
784 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO
, SSL_R_WRONG_VERSION_NUMBER
);
785 if ((s
->client_version
>>8) == SSL3_VERSION_MAJOR
)
787 /* similar to ssl3_get_record, send alert using remote version number */
788 s
->version
= s
->client_version
;
790 al
= SSL_AD_PROTOCOL_VERSION
;
794 /* load the client random */
795 memcpy(s
->s3
->client_random
,p
,SSL3_RANDOM_SIZE
);
798 /* get the session-id */
802 /* Versions before 0.9.7 always allow session reuse during renegotiation
803 * (i.e. when s->new_session is true), option
804 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is new with 0.9.7.
805 * Maybe this optional behaviour should always have been the default,
806 * but we cannot safely change the default behaviour (or new applications
807 * might be written that become totally unsecure when compiled with
808 * an earlier library version)
810 if ((s
->new_session
&& (s
->options
& SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION
)))
812 if (!ssl_get_new_session(s
,1))
817 i
=ssl_get_prev_session(s
, p
, j
, d
+ n
);
819 { /* previous session */
826 if (!ssl_get_new_session(s
,1))
833 if (s
->version
== DTLS1_VERSION
)
838 if ( (SSL_get_options(s
) & SSL_OP_COOKIE_EXCHANGE
) &&
839 s
->d1
->send_cookie
== 0)
841 /* HelloVerifyMessage has already been sent */
842 if ( cookie_len
!= s
->d1
->cookie_len
)
844 al
= SSL_AD_HANDSHAKE_FAILURE
;
845 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO
, SSL_R_COOKIE_MISMATCH
);
851 * The ClientHello may contain a cookie even if the
852 * HelloVerify message has not been sent--make sure that it
853 * does not cause an overflow.
855 if ( cookie_len
> sizeof(s
->d1
->rcvd_cookie
))
858 al
= SSL_AD_DECODE_ERROR
;
859 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO
, SSL_R_COOKIE_MISMATCH
);
863 /* verify the cookie if appropriate option is set. */
864 if ( (SSL_get_options(s
) & SSL_OP_COOKIE_EXCHANGE
) &&
867 memcpy(s
->d1
->rcvd_cookie
, p
, cookie_len
);
869 if ( s
->ctx
->app_verify_cookie_cb
!= NULL
)
871 if ( s
->ctx
->app_verify_cookie_cb(s
, s
->d1
->rcvd_cookie
,
874 al
=SSL_AD_HANDSHAKE_FAILURE
;
875 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO
,
876 SSL_R_COOKIE_MISMATCH
);
879 /* else cookie verification succeeded */
881 else if ( memcmp(s
->d1
->rcvd_cookie
, s
->d1
->cookie
,
882 s
->d1
->cookie_len
) != 0) /* default verification */
884 al
=SSL_AD_HANDSHAKE_FAILURE
;
885 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO
,
886 SSL_R_COOKIE_MISMATCH
);
895 if ((i
== 0) && (j
!= 0))
897 /* we need a cipher if we are not resuming a session */
898 al
=SSL_AD_ILLEGAL_PARAMETER
;
899 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO
,SSL_R_NO_CIPHERS_SPECIFIED
);
904 /* not enough data */
905 al
=SSL_AD_DECODE_ERROR
;
906 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO
,SSL_R_LENGTH_MISMATCH
);
909 if ((i
> 0) && (ssl_bytes_to_cipher_list(s
,p
,i
,&(ciphers
))
916 /* If it is a hit, check that the cipher is in the list */
917 if ((s
->hit
) && (i
> 0))
920 id
=s
->session
->cipher
->id
;
923 printf("client sent %d ciphers\n",sk_num(ciphers
));
925 for (i
=0; i
<sk_SSL_CIPHER_num(ciphers
); i
++)
927 c
=sk_SSL_CIPHER_value(ciphers
,i
);
929 printf("client [%2d of %2d]:%s\n",
930 i
,sk_num(ciphers
),SSL_CIPHER_get_name(c
));
940 if ((s
->options
& SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
) && (sk_SSL_CIPHER_num(ciphers
) == 1))
942 /* Very bad for multi-threading.... */
943 s
->session
->cipher
=sk_SSL_CIPHER_value(ciphers
, 0);
947 /* we need to have the cipher in the cipher
948 * list if we are asked to reuse it */
949 al
=SSL_AD_ILLEGAL_PARAMETER
;
950 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO
,SSL_R_REQUIRED_CIPHER_MISSING
);
960 /* not enough data */
961 al
=SSL_AD_DECODE_ERROR
;
962 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO
,SSL_R_LENGTH_MISMATCH
);
968 if (p
[j
] == 0) break;
975 al
=SSL_AD_DECODE_ERROR
;
976 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO
,SSL_R_NO_COMPRESSION_SPECIFIED
);
980 #ifndef OPENSSL_NO_TLSEXT
982 if (s
->version
> SSL3_VERSION
)
984 if (!ssl_parse_clienthello_tlsext(s
,&p
,d
,n
, &al
))
986 /* 'al' set by ssl_parse_clienthello_tlsext */
987 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO
,SSL_R_PARSE_TLSEXT
);
991 if (ssl_check_clienthello_tlsext(s
) <= 0) {
992 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO
,SSL_R_CLIENTHELLO_TLSEXT
);
997 /* Worst case, we will use the NULL compression, but if we have other
998 * options, we will now look for them. We have i-1 compression
999 * algorithms from the client, starting at q. */
1000 s
->s3
->tmp
.new_compression
=NULL
;
1001 #ifndef OPENSSL_NO_COMP
1002 if (!(s
->options
& SSL_OP_NO_COMPRESSION
) && s
->ctx
->comp_methods
)
1003 { /* See if we have a match */
1004 int m
,nn
,o
,v
,done
=0;
1006 nn
=sk_SSL_COMP_num(s
->ctx
->comp_methods
);
1007 for (m
=0; m
<nn
; m
++)
1009 comp
=sk_SSL_COMP_value(s
->ctx
->comp_methods
,m
);
1022 s
->s3
->tmp
.new_compression
=comp
;
1028 /* Given s->session->ciphers and SSL_get_ciphers, we must
1033 #ifdef OPENSSL_NO_COMP
1034 s
->session
->compress_meth
=0;
1036 s
->session
->compress_meth
=(comp
== NULL
)?0:comp
->id
;
1038 if (s
->session
->ciphers
!= NULL
)
1039 sk_SSL_CIPHER_free(s
->session
->ciphers
);
1040 s
->session
->ciphers
=ciphers
;
1041 if (ciphers
== NULL
)
1043 al
=SSL_AD_ILLEGAL_PARAMETER
;
1044 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO
,SSL_R_NO_CIPHERS_PASSED
);
1048 c
=ssl3_choose_cipher(s
,s
->session
->ciphers
,
1049 SSL_get_ciphers(s
));
1053 al
=SSL_AD_HANDSHAKE_FAILURE
;
1054 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO
,SSL_R_NO_SHARED_CIPHER
);
1057 s
->s3
->tmp
.new_cipher
=c
;
1058 ssl3_digest_cached_records(s
);
1062 /* Session-id reuse */
1063 #ifdef REUSE_CIPHER_BUG
1064 STACK_OF(SSL_CIPHER
) *sk
;
1065 SSL_CIPHER
*nc
=NULL
;
1066 SSL_CIPHER
*ec
=NULL
;
1068 if (s
->options
& SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG
)
1070 sk
=s
->session
->ciphers
;
1071 for (i
=0; i
<sk_SSL_CIPHER_num(sk
); i
++)
1073 c
=sk_SSL_CIPHER_value(sk
,i
);
1074 if (c
->algorithm_enc
& SSL_eNULL
)
1076 if (SSL_C_IS_EXPORT(c
))
1080 s
->s3
->tmp
.new_cipher
=nc
;
1081 else if (ec
!= NULL
)
1082 s
->s3
->tmp
.new_cipher
=ec
;
1084 s
->s3
->tmp
.new_cipher
=s
->session
->cipher
;
1088 s
->s3
->tmp
.new_cipher
=s
->session
->cipher
;
1089 /* Clear cached handshake records */
1090 BIO_free(s
->s3
->handshake_buffer
);
1091 s
->s3
->handshake_buffer
= NULL
;
1094 /* we now have the following setup.
1096 * cipher_list - our prefered list of ciphers
1097 * ciphers - the clients prefered list of ciphers
1098 * compression - basically ignored right now
1099 * ssl version is set - sslv3
1100 * s->session - The ssl session has been setup.
1101 * s->hit - session reuse flag
1102 * s->tmp.new_cipher - the new cipher to use.
1109 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1112 if (ciphers
!= NULL
) sk_SSL_CIPHER_free(ciphers
);
1116 int ssl3_send_server_hello(SSL
*s
)
1119 unsigned char *p
,*d
;
1121 unsigned long l
,Time
;
1123 if (s
->state
== SSL3_ST_SW_SRVR_HELLO_A
)
1125 buf
=(unsigned char *)s
->init_buf
->data
;
1126 p
=s
->s3
->server_random
;
1127 Time
=(unsigned long)time(NULL
); /* Time */
1129 if (RAND_pseudo_bytes(p
,SSL3_RANDOM_SIZE
-4) <= 0)
1131 /* Do the message type and length last */
1134 *(p
++)=s
->version
>>8;
1135 *(p
++)=s
->version
&0xff;
1138 memcpy(p
,s
->s3
->server_random
,SSL3_RANDOM_SIZE
);
1139 p
+=SSL3_RANDOM_SIZE
;
1141 /* now in theory we have 3 options to sending back the
1142 * session id. If it is a re-use, we send back the
1143 * old session-id, if it is a new session, we send
1144 * back the new session-id or we send back a 0 length
1145 * session-id if we want it to be single use.
1146 * Currently I will not implement the '0' length session-id
1147 * 12-Jan-98 - I'll now support the '0' length stuff.
1149 if (!(s
->ctx
->session_cache_mode
& SSL_SESS_CACHE_SERVER
))
1150 s
->session
->session_id_length
=0;
1152 sl
=s
->session
->session_id_length
;
1153 if (sl
> (int)sizeof(s
->session
->session_id
))
1155 SSLerr(SSL_F_SSL3_SEND_SERVER_HELLO
, ERR_R_INTERNAL_ERROR
);
1159 memcpy(p
,s
->session
->session_id
,sl
);
1162 /* put the cipher */
1163 i
=ssl3_put_cipher_by_char(s
->s3
->tmp
.new_cipher
,p
);
1166 /* put the compression method */
1167 #ifdef OPENSSL_NO_COMP
1170 if (s
->s3
->tmp
.new_compression
== NULL
)
1173 *(p
++)=s
->s3
->tmp
.new_compression
->id
;
1175 #ifndef OPENSSL_NO_TLSEXT
1176 if (ssl_prepare_serverhello_tlsext(s
) <= 0)
1178 SSLerr(SSL_F_SSL3_SEND_SERVER_HELLO
,SSL_R_SERVERHELLO_TLSEXT
);
1181 if ((p
= ssl_add_serverhello_tlsext(s
, p
, buf
+SSL3_RT_MAX_PLAIN_LENGTH
)) == NULL
)
1183 SSLerr(SSL_F_SSL3_SEND_SERVER_HELLO
,ERR_R_INTERNAL_ERROR
);
1190 *(d
++)=SSL3_MT_SERVER_HELLO
;
1193 s
->state
=SSL3_ST_CW_CLNT_HELLO_B
;
1194 /* number of bytes to write */
1199 /* SSL3_ST_CW_CLNT_HELLO_B */
1200 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
1203 int ssl3_send_server_done(SSL
*s
)
1207 if (s
->state
== SSL3_ST_SW_SRVR_DONE_A
)
1209 p
=(unsigned char *)s
->init_buf
->data
;
1212 *(p
++)=SSL3_MT_SERVER_DONE
;
1217 s
->state
=SSL3_ST_SW_SRVR_DONE_B
;
1218 /* number of bytes to write */
1223 /* SSL3_ST_CW_CLNT_HELLO_B */
1224 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
1227 int ssl3_send_server_key_exchange(SSL
*s
)
1229 #ifndef OPENSSL_NO_RSA
1233 unsigned char md_buf
[MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
];
1236 #ifndef OPENSSL_NO_DH
1239 #ifndef OPENSSL_NO_ECDH
1240 EC_KEY
*ecdh
=NULL
, *ecdhp
;
1241 unsigned char *encodedPoint
= NULL
;
1244 BN_CTX
*bn_ctx
= NULL
;
1247 unsigned char *p
,*d
;
1257 EVP_MD_CTX_init(&md_ctx
);
1258 if (s
->state
== SSL3_ST_SW_KEY_EXCH_A
)
1260 type
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
1265 r
[0]=r
[1]=r
[2]=r
[3]=NULL
;
1267 #ifndef OPENSSL_NO_RSA
1268 if (type
& SSL_kRSA
)
1271 if ((rsa
== NULL
) && (s
->cert
->rsa_tmp_cb
!= NULL
))
1273 rsa
=s
->cert
->rsa_tmp_cb(s
,
1274 SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
),
1275 SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
));
1278 al
=SSL_AD_HANDSHAKE_FAILURE
;
1279 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,SSL_R_ERROR_GENERATING_TMP_RSA_KEY
);
1287 al
=SSL_AD_HANDSHAKE_FAILURE
;
1288 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,SSL_R_MISSING_TMP_RSA_KEY
);
1293 s
->s3
->tmp
.use_rsa_tmp
=1;
1297 #ifndef OPENSSL_NO_DH
1298 if (type
& SSL_kEDH
)
1301 if ((dhp
== NULL
) && (s
->cert
->dh_tmp_cb
!= NULL
))
1302 dhp
=s
->cert
->dh_tmp_cb(s
,
1303 SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
),
1304 SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
));
1307 al
=SSL_AD_HANDSHAKE_FAILURE
;
1308 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,SSL_R_MISSING_TMP_DH_KEY
);
1312 if (s
->s3
->tmp
.dh
!= NULL
)
1315 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
1319 if ((dh
=DHparams_dup(dhp
)) == NULL
)
1321 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1326 if ((dhp
->pub_key
== NULL
||
1327 dhp
->priv_key
== NULL
||
1328 (s
->options
& SSL_OP_SINGLE_DH_USE
)))
1330 if(!DH_generate_key(dh
))
1332 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,
1339 dh
->pub_key
=BN_dup(dhp
->pub_key
);
1340 dh
->priv_key
=BN_dup(dhp
->priv_key
);
1341 if ((dh
->pub_key
== NULL
) ||
1342 (dh
->priv_key
== NULL
))
1344 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1354 #ifndef OPENSSL_NO_ECDH
1355 if (type
& SSL_kEECDH
)
1357 const EC_GROUP
*group
;
1359 ecdhp
=cert
->ecdh_tmp
;
1360 if ((ecdhp
== NULL
) && (s
->cert
->ecdh_tmp_cb
!= NULL
))
1362 ecdhp
=s
->cert
->ecdh_tmp_cb(s
,
1363 SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
),
1364 SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
));
1368 al
=SSL_AD_HANDSHAKE_FAILURE
;
1369 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,SSL_R_MISSING_TMP_ECDH_KEY
);
1373 if (s
->s3
->tmp
.ecdh
!= NULL
)
1375 EC_KEY_free(s
->s3
->tmp
.ecdh
);
1376 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
1380 /* Duplicate the ECDH structure. */
1383 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,ERR_R_ECDH_LIB
);
1386 if (!EC_KEY_up_ref(ecdhp
))
1388 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,ERR_R_ECDH_LIB
);
1393 s
->s3
->tmp
.ecdh
=ecdh
;
1394 if ((EC_KEY_get0_public_key(ecdh
) == NULL
) ||
1395 (EC_KEY_get0_private_key(ecdh
) == NULL
) ||
1396 (s
->options
& SSL_OP_SINGLE_ECDH_USE
))
1398 if(!EC_KEY_generate_key(ecdh
))
1400 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,ERR_R_ECDH_LIB
);
1405 if (((group
= EC_KEY_get0_group(ecdh
)) == NULL
) ||
1406 (EC_KEY_get0_public_key(ecdh
) == NULL
) ||
1407 (EC_KEY_get0_private_key(ecdh
) == NULL
))
1409 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,ERR_R_ECDH_LIB
);
1413 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) &&
1414 (EC_GROUP_get_degree(group
) > 163))
1416 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER
);
1420 /* XXX: For now, we only support ephemeral ECDH
1421 * keys over named (not generic) curves. For
1422 * supported named curves, curve_id is non-zero.
1425 tls1_ec_nid2curve_id(EC_GROUP_get_curve_name(group
)))
1428 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,SSL_R_UNSUPPORTED_ELLIPTIC_CURVE
);
1432 /* Encode the public key.
1433 * First check the size of encoding and
1434 * allocate memory accordingly.
1436 encodedlen
= EC_POINT_point2oct(group
,
1437 EC_KEY_get0_public_key(ecdh
),
1438 POINT_CONVERSION_UNCOMPRESSED
,
1441 encodedPoint
= (unsigned char *)
1442 OPENSSL_malloc(encodedlen
*sizeof(unsigned char));
1443 bn_ctx
= BN_CTX_new();
1444 if ((encodedPoint
== NULL
) || (bn_ctx
== NULL
))
1446 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1451 encodedlen
= EC_POINT_point2oct(group
,
1452 EC_KEY_get0_public_key(ecdh
),
1453 POINT_CONVERSION_UNCOMPRESSED
,
1454 encodedPoint
, encodedlen
, bn_ctx
);
1456 if (encodedlen
== 0)
1458 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,ERR_R_ECDH_LIB
);
1462 BN_CTX_free(bn_ctx
); bn_ctx
=NULL
;
1464 /* XXX: For now, we only support named (not
1465 * generic) curves in ECDH ephemeral key exchanges.
1466 * In this situation, we need four additional bytes
1467 * to encode the entire ServerECDHParams
1472 /* We'll generate the serverKeyExchange message
1473 * explicitly so we can set these to NULLs
1481 #endif /* !OPENSSL_NO_ECDH */
1482 #ifndef OPENSSL_NO_PSK
1483 if (type
& SSL_kPSK
)
1485 /* reserve size for record length and PSK identity hint*/
1486 n
+=2+strlen(s
->ctx
->psk_identity_hint
);
1489 #endif /* !OPENSSL_NO_PSK */
1491 al
=SSL_AD_HANDSHAKE_FAILURE
;
1492 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE
);
1495 for (i
=0; r
[i
] != NULL
; i
++)
1497 nr
[i
]=BN_num_bytes(r
[i
]);
1501 if (!(s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aNULL
)
1502 && !(s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kPSK
))
1504 if ((pkey
=ssl_get_sign_pkey(s
,s
->s3
->tmp
.new_cipher
))
1507 al
=SSL_AD_DECODE_ERROR
;
1510 kn
=EVP_PKEY_size(pkey
);
1518 if (!BUF_MEM_grow_clean(buf
,n
+4+kn
))
1520 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,ERR_LIB_BUF
);
1523 d
=(unsigned char *)s
->init_buf
->data
;
1526 for (i
=0; r
[i
] != NULL
; i
++)
1533 #ifndef OPENSSL_NO_ECDH
1534 if (type
& SSL_kEECDH
)
1536 /* XXX: For now, we only support named (not generic) curves.
1537 * In this situation, the serverKeyExchange message has:
1538 * [1 byte CurveType], [2 byte CurveName]
1539 * [1 byte length of encoded point], followed by
1540 * the actual encoded point itself
1542 *p
= NAMED_CURVE_TYPE
;
1550 memcpy((unsigned char*)p
,
1551 (unsigned char *)encodedPoint
,
1553 OPENSSL_free(encodedPoint
);
1558 #ifndef OPENSSL_NO_PSK
1559 if (type
& SSL_kPSK
)
1561 /* copy PSK identity hint */
1562 s2n(strlen(s
->ctx
->psk_identity_hint
), p
);
1563 strncpy((char *)p
, s
->ctx
->psk_identity_hint
, strlen(s
->ctx
->psk_identity_hint
));
1564 p
+=strlen(s
->ctx
->psk_identity_hint
);
1571 /* n is the length of the params, they start at &(d[4])
1572 * and p points to the space at the end. */
1573 #ifndef OPENSSL_NO_RSA
1574 if (pkey
->type
== EVP_PKEY_RSA
)
1578 for (num
=2; num
> 0; num
--)
1580 EVP_DigestInit_ex(&md_ctx
,(num
== 2)
1581 ?s
->ctx
->md5
:s
->ctx
->sha1
, NULL
);
1582 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1583 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1584 EVP_DigestUpdate(&md_ctx
,&(d
[4]),n
);
1585 EVP_DigestFinal_ex(&md_ctx
,q
,
1586 (unsigned int *)&i
);
1590 if (RSA_sign(NID_md5_sha1
, md_buf
, j
,
1591 &(p
[2]), &u
, pkey
->pkey
.rsa
) <= 0)
1593 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,ERR_LIB_RSA
);
1601 #if !defined(OPENSSL_NO_DSA)
1602 if (pkey
->type
== EVP_PKEY_DSA
)
1605 EVP_SignInit_ex(&md_ctx
,EVP_dss1(), NULL
);
1606 EVP_SignUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1607 EVP_SignUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1608 EVP_SignUpdate(&md_ctx
,&(d
[4]),n
);
1609 if (!EVP_SignFinal(&md_ctx
,&(p
[2]),
1610 (unsigned int *)&i
,pkey
))
1612 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,ERR_LIB_DSA
);
1620 #if !defined(OPENSSL_NO_ECDSA)
1621 if (pkey
->type
== EVP_PKEY_EC
)
1623 /* let's do ECDSA */
1624 EVP_SignInit_ex(&md_ctx
,EVP_ecdsa(), NULL
);
1625 EVP_SignUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1626 EVP_SignUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1627 EVP_SignUpdate(&md_ctx
,&(d
[4]),n
);
1628 if (!EVP_SignFinal(&md_ctx
,&(p
[2]),
1629 (unsigned int *)&i
,pkey
))
1631 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,ERR_LIB_ECDSA
);
1640 /* Is this error check actually needed? */
1641 al
=SSL_AD_HANDSHAKE_FAILURE
;
1642 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE
,SSL_R_UNKNOWN_PKEY_TYPE
);
1647 *(d
++)=SSL3_MT_SERVER_KEY_EXCHANGE
;
1650 /* we should now have things packed up, so lets send
1656 s
->state
= SSL3_ST_SW_KEY_EXCH_B
;
1657 EVP_MD_CTX_cleanup(&md_ctx
);
1658 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
1660 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1662 #ifndef OPENSSL_NO_ECDH
1663 if (encodedPoint
!= NULL
) OPENSSL_free(encodedPoint
);
1664 BN_CTX_free(bn_ctx
);
1666 EVP_MD_CTX_cleanup(&md_ctx
);
1670 int ssl3_send_certificate_request(SSL
*s
)
1672 unsigned char *p
,*d
;
1674 STACK_OF(X509_NAME
) *sk
=NULL
;
1678 if (s
->state
== SSL3_ST_SW_CERT_REQ_A
)
1682 d
=p
=(unsigned char *)&(buf
->data
[4]);
1684 /* get the list of acceptable cert types */
1686 n
=ssl3_get_req_cert_type(s
,p
);
1695 sk
=SSL_get_client_CA_list(s
);
1699 for (i
=0; i
<sk_X509_NAME_num(sk
); i
++)
1701 name
=sk_X509_NAME_value(sk
,i
);
1702 j
=i2d_X509_NAME(name
,NULL
);
1703 if (!BUF_MEM_grow_clean(buf
,4+n
+j
+2))
1705 SSLerr(SSL_F_SSL3_SEND_CERTIFICATE_REQUEST
,ERR_R_BUF_LIB
);
1708 p
=(unsigned char *)&(buf
->data
[4+n
]);
1709 if (!(s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
))
1712 i2d_X509_NAME(name
,&p
);
1719 i2d_X509_NAME(name
,&p
);
1720 j
-=2; s2n(j
,d
); j
+=2;
1726 /* else no CA names */
1727 p
=(unsigned char *)&(buf
->data
[4+off
]);
1730 d
=(unsigned char *)buf
->data
;
1731 *(d
++)=SSL3_MT_CERTIFICATE_REQUEST
;
1734 /* we should now have things packed up, so lets send
1739 #ifdef NETSCAPE_HANG_BUG
1740 p
=(unsigned char *)s
->init_buf
->data
+ s
->init_num
;
1743 *(p
++)=SSL3_MT_SERVER_DONE
;
1750 s
->state
= SSL3_ST_SW_CERT_REQ_B
;
1753 /* SSL3_ST_SW_CERT_REQ_B */
1754 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
1759 int ssl3_get_client_key_exchange(SSL
*s
)
1763 unsigned long alg_k
;
1765 #ifndef OPENSSL_NO_RSA
1767 EVP_PKEY
*pkey
=NULL
;
1769 #ifndef OPENSSL_NO_DH
1773 #ifndef OPENSSL_NO_KRB5
1775 #endif /* OPENSSL_NO_KRB5 */
1777 #ifndef OPENSSL_NO_ECDH
1778 EC_KEY
*srvr_ecdh
= NULL
;
1779 EVP_PKEY
*clnt_pub_pkey
= NULL
;
1780 EC_POINT
*clnt_ecpoint
= NULL
;
1781 BN_CTX
*bn_ctx
= NULL
;
1784 n
=s
->method
->ssl_get_message(s
,
1785 SSL3_ST_SR_KEY_EXCH_A
,
1786 SSL3_ST_SR_KEY_EXCH_B
,
1787 SSL3_MT_CLIENT_KEY_EXCHANGE
,
1791 if (!ok
) return((int)n
);
1792 p
=(unsigned char *)s
->init_msg
;
1794 alg_k
=s
->s3
->tmp
.new_cipher
->algorithm_mkey
;
1796 #ifndef OPENSSL_NO_RSA
1797 if (alg_k
& SSL_kRSA
)
1799 /* FIX THIS UP EAY EAY EAY EAY */
1800 if (s
->s3
->tmp
.use_rsa_tmp
)
1802 if ((s
->cert
!= NULL
) && (s
->cert
->rsa_tmp
!= NULL
))
1803 rsa
=s
->cert
->rsa_tmp
;
1804 /* Don't do a callback because rsa_tmp should
1805 * be sent already */
1808 al
=SSL_AD_HANDSHAKE_FAILURE
;
1809 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,SSL_R_MISSING_TMP_RSA_PKEY
);
1816 pkey
=s
->cert
->pkeys
[SSL_PKEY_RSA_ENC
].privatekey
;
1817 if ( (pkey
== NULL
) ||
1818 (pkey
->type
!= EVP_PKEY_RSA
) ||
1819 (pkey
->pkey
.rsa
== NULL
))
1821 al
=SSL_AD_HANDSHAKE_FAILURE
;
1822 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,SSL_R_MISSING_RSA_CERTIFICATE
);
1828 /* TLS and [incidentally] DTLS{0xFEFF} */
1829 if (s
->version
> SSL3_VERSION
)
1834 if (!(s
->options
& SSL_OP_TLS_D5_BUG
))
1836 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,SSL_R_TLS_RSA_ENCRYPTED_VALUE_LENGTH_IS_WRONG
);
1846 i
=RSA_private_decrypt((int)n
,p
,p
,rsa
,RSA_PKCS1_PADDING
);
1850 if (i
!= SSL_MAX_MASTER_KEY_LENGTH
)
1852 al
=SSL_AD_DECODE_ERROR
;
1853 /* SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT); */
1856 if ((al
== -1) && !((p
[0] == (s
->client_version
>>8)) && (p
[1] == (s
->client_version
& 0xff))))
1858 /* The premaster secret must contain the same version number as the
1859 * ClientHello to detect version rollback attacks (strangely, the
1860 * protocol does not offer such protection for DH ciphersuites).
1861 * However, buggy clients exist that send the negotiated protocol
1862 * version instead if the server does not support the requested
1864 * If SSL_OP_TLS_ROLLBACK_BUG is set, tolerate such clients. */
1865 if (!((s
->options
& SSL_OP_TLS_ROLLBACK_BUG
) &&
1866 (p
[0] == (s
->version
>>8)) && (p
[1] == (s
->version
& 0xff))))
1868 al
=SSL_AD_DECODE_ERROR
;
1869 /* SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_BAD_PROTOCOL_VERSION_NUMBER); */
1871 /* The Klima-Pokorny-Rosa extension of Bleichenbacher's attack
1872 * (http://eprint.iacr.org/2003/052/) exploits the version
1873 * number check as a "bad version oracle" -- an alert would
1874 * reveal that the plaintext corresponding to some ciphertext
1875 * made up by the adversary is properly formatted except
1876 * that the version number is wrong. To avoid such attacks,
1877 * we should treat this just like any other decryption error. */
1883 /* Some decryption failure -- use random value instead as countermeasure
1884 * against Bleichenbacher's attack on PKCS #1 v1.5 RSA padding
1885 * (see RFC 2246, section 7.4.7.1). */
1887 i
= SSL_MAX_MASTER_KEY_LENGTH
;
1888 p
[0] = s
->client_version
>> 8;
1889 p
[1] = s
->client_version
& 0xff;
1890 if (RAND_pseudo_bytes(p
+2, i
-2) <= 0) /* should be RAND_bytes, but we cannot work around a failure */
1894 s
->session
->master_key_length
=
1895 s
->method
->ssl3_enc
->generate_master_secret(s
,
1896 s
->session
->master_key
,
1898 OPENSSL_cleanse(p
,i
);
1902 #ifndef OPENSSL_NO_DH
1903 if (alg_k
& (SSL_kEDH
|SSL_kDHr
|SSL_kDHd
))
1908 if (!(s
->options
& SSL_OP_SSLEAY_080_CLIENT_DH_BUG
))
1910 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,SSL_R_DH_PUBLIC_VALUE_LENGTH_IS_WRONG
);
1920 if (n
== 0L) /* the parameters are in the cert */
1922 al
=SSL_AD_HANDSHAKE_FAILURE
;
1923 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,SSL_R_UNABLE_TO_DECODE_DH_CERTS
);
1928 if (s
->s3
->tmp
.dh
== NULL
)
1930 al
=SSL_AD_HANDSHAKE_FAILURE
;
1931 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,SSL_R_MISSING_TMP_DH_KEY
);
1935 dh_srvr
=s
->s3
->tmp
.dh
;
1938 pub
=BN_bin2bn(p
,i
,NULL
);
1941 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,SSL_R_BN_LIB
);
1945 i
=DH_compute_key(p
,pub
,dh_srvr
);
1949 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1953 DH_free(s
->s3
->tmp
.dh
);
1958 s
->session
->master_key_length
=
1959 s
->method
->ssl3_enc
->generate_master_secret(s
,
1960 s
->session
->master_key
,p
,i
);
1961 OPENSSL_cleanse(p
,i
);
1965 #ifndef OPENSSL_NO_KRB5
1966 if (alg_k
& SSL_kKRB5
)
1968 krb5_error_code krb5rc
;
1969 krb5_data enc_ticket
;
1970 krb5_data authenticator
;
1972 KSSL_CTX
*kssl_ctx
= s
->kssl_ctx
;
1973 EVP_CIPHER_CTX ciph_ctx
;
1974 EVP_CIPHER
*enc
= NULL
;
1975 unsigned char iv
[EVP_MAX_IV_LENGTH
];
1976 unsigned char pms
[SSL_MAX_MASTER_KEY_LENGTH
1977 + EVP_MAX_BLOCK_LENGTH
];
1979 krb5_timestamp authtime
= 0;
1980 krb5_ticket_times ttimes
;
1982 EVP_CIPHER_CTX_init(&ciph_ctx
);
1984 if (!kssl_ctx
) kssl_ctx
= kssl_ctx_new();
1987 enc_ticket
.length
= i
;
1989 if (n
< enc_ticket
.length
+ 6)
1991 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
1992 SSL_R_DATA_LENGTH_TOO_LONG
);
1996 enc_ticket
.data
= (char *)p
;
1997 p
+=enc_ticket
.length
;
2000 authenticator
.length
= i
;
2002 if (n
< enc_ticket
.length
+ authenticator
.length
+ 6)
2004 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2005 SSL_R_DATA_LENGTH_TOO_LONG
);
2009 authenticator
.data
= (char *)p
;
2010 p
+=authenticator
.length
;
2014 enc_pms
.data
= (char *)p
;
2017 /* Note that the length is checked again below,
2020 if(enc_pms
.length
> sizeof pms
)
2022 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2023 SSL_R_DATA_LENGTH_TOO_LONG
);
2027 if (n
!= (long)(enc_ticket
.length
+ authenticator
.length
+
2028 enc_pms
.length
+ 6))
2030 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2031 SSL_R_DATA_LENGTH_TOO_LONG
);
2035 if ((krb5rc
= kssl_sget_tkt(kssl_ctx
, &enc_ticket
, &ttimes
,
2039 printf("kssl_sget_tkt rtn %d [%d]\n",
2040 krb5rc
, kssl_err
.reason
);
2042 printf("kssl_err text= %s\n", kssl_err
.text
);
2043 #endif /* KSSL_DEBUG */
2044 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2049 /* Note: no authenticator is not considered an error,
2050 ** but will return authtime == 0.
2052 if ((krb5rc
= kssl_check_authent(kssl_ctx
, &authenticator
,
2053 &authtime
, &kssl_err
)) != 0)
2056 printf("kssl_check_authent rtn %d [%d]\n",
2057 krb5rc
, kssl_err
.reason
);
2059 printf("kssl_err text= %s\n", kssl_err
.text
);
2060 #endif /* KSSL_DEBUG */
2061 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2066 if ((krb5rc
= kssl_validate_times(authtime
, &ttimes
)) != 0)
2068 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
, krb5rc
);
2073 kssl_ctx_show(kssl_ctx
);
2074 #endif /* KSSL_DEBUG */
2076 enc
= kssl_map_enc(kssl_ctx
->enctype
);
2080 memset(iv
, 0, sizeof iv
); /* per RFC 1510 */
2082 if (!EVP_DecryptInit_ex(&ciph_ctx
,enc
,NULL
,kssl_ctx
->key
,iv
))
2084 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2085 SSL_R_DECRYPTION_FAILED
);
2088 if (!EVP_DecryptUpdate(&ciph_ctx
, pms
,&outl
,
2089 (unsigned char *)enc_pms
.data
, enc_pms
.length
))
2091 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2092 SSL_R_DECRYPTION_FAILED
);
2095 if (outl
> SSL_MAX_MASTER_KEY_LENGTH
)
2097 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2098 SSL_R_DATA_LENGTH_TOO_LONG
);
2101 if (!EVP_DecryptFinal_ex(&ciph_ctx
,&(pms
[outl
]),&padl
))
2103 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2104 SSL_R_DECRYPTION_FAILED
);
2108 if (outl
> SSL_MAX_MASTER_KEY_LENGTH
)
2110 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2111 SSL_R_DATA_LENGTH_TOO_LONG
);
2114 if (!((p
[0] == (s
->client_version
>>8)) && (p
[1] == (s
->client_version
& 0xff))))
2116 /* The premaster secret must contain the same version number as the
2117 * ClientHello to detect version rollback attacks (strangely, the
2118 * protocol does not offer such protection for DH ciphersuites).
2119 * However, buggy clients exist that send random bytes instead of
2120 * the protocol version.
2121 * If SSL_OP_TLS_ROLLBACK_BUG is set, tolerate such clients.
2122 * (Perhaps we should have a separate BUG value for the Kerberos cipher)
2124 if (!((s
->options
& SSL_OP_TLS_ROLLBACK_BUG
) &&
2125 (p
[0] == (s
->version
>>8)) && (p
[1] == (s
->version
& 0xff))))
2127 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2128 SSL_AD_DECODE_ERROR
);
2133 EVP_CIPHER_CTX_cleanup(&ciph_ctx
);
2135 s
->session
->master_key_length
=
2136 s
->method
->ssl3_enc
->generate_master_secret(s
,
2137 s
->session
->master_key
, pms
, outl
);
2139 if (kssl_ctx
->client_princ
)
2141 size_t len
= strlen(kssl_ctx
->client_princ
);
2142 if ( len
< SSL_MAX_KRB5_PRINCIPAL_LENGTH
)
2144 s
->session
->krb5_client_princ_len
= len
;
2145 memcpy(s
->session
->krb5_client_princ
,kssl_ctx
->client_princ
,len
);
2150 /* Was doing kssl_ctx_free() here,
2151 ** but it caused problems for apache.
2152 ** kssl_ctx = kssl_ctx_free(kssl_ctx);
2153 ** if (s->kssl_ctx) s->kssl_ctx = NULL;
2157 #endif /* OPENSSL_NO_KRB5 */
2159 #ifndef OPENSSL_NO_ECDH
2160 if (alg_k
& (SSL_kEECDH
|SSL_kECDHr
|SSL_kECDHe
))
2165 const EC_GROUP
*group
;
2166 const BIGNUM
*priv_key
;
2168 /* initialize structures for server's ECDH key pair */
2169 if ((srvr_ecdh
= EC_KEY_new()) == NULL
)
2171 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2172 ERR_R_MALLOC_FAILURE
);
2176 /* Let's get server private key and group information */
2177 if (alg_k
& (SSL_kECDHr
|SSL_kECDHe
))
2179 /* use the certificate */
2180 tkey
= s
->cert
->pkeys
[SSL_PKEY_ECC
].privatekey
->pkey
.ec
;
2184 /* use the ephermeral values we saved when
2185 * generating the ServerKeyExchange msg.
2187 tkey
= s
->s3
->tmp
.ecdh
;
2190 group
= EC_KEY_get0_group(tkey
);
2191 priv_key
= EC_KEY_get0_private_key(tkey
);
2193 if (!EC_KEY_set_group(srvr_ecdh
, group
) ||
2194 !EC_KEY_set_private_key(srvr_ecdh
, priv_key
))
2196 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2201 /* Let's get client's public key */
2202 if ((clnt_ecpoint
= EC_POINT_new(group
)) == NULL
)
2204 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2205 ERR_R_MALLOC_FAILURE
);
2211 /* Client Publickey was in Client Certificate */
2213 if (alg_k
& SSL_kEECDH
)
2215 al
=SSL_AD_HANDSHAKE_FAILURE
;
2216 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,SSL_R_MISSING_TMP_ECDH_KEY
);
2219 if (((clnt_pub_pkey
=X509_get_pubkey(s
->session
->peer
))
2221 (clnt_pub_pkey
->type
!= EVP_PKEY_EC
))
2223 /* XXX: For now, we do not support client
2224 * authentication using ECDH certificates
2225 * so this branch (n == 0L) of the code is
2226 * never executed. When that support is
2227 * added, we ought to ensure the key
2228 * received in the certificate is
2229 * authorized for key agreement.
2230 * ECDH_compute_key implicitly checks that
2231 * the two ECDH shares are for the same
2234 al
=SSL_AD_HANDSHAKE_FAILURE
;
2235 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2236 SSL_R_UNABLE_TO_DECODE_ECDH_CERTS
);
2240 if (EC_POINT_copy(clnt_ecpoint
,
2241 EC_KEY_get0_public_key(clnt_pub_pkey
->pkey
.ec
)) == 0)
2243 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2247 ret
= 2; /* Skip certificate verify processing */
2251 /* Get client's public key from encoded point
2252 * in the ClientKeyExchange message.
2254 if ((bn_ctx
= BN_CTX_new()) == NULL
)
2256 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2257 ERR_R_MALLOC_FAILURE
);
2261 /* Get encoded point length */
2264 if (EC_POINT_oct2point(group
,
2265 clnt_ecpoint
, p
, i
, bn_ctx
) == 0)
2267 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2271 /* p is pointing to somewhere in the buffer
2272 * currently, so set it to the start
2274 p
=(unsigned char *)s
->init_buf
->data
;
2277 /* Compute the shared pre-master secret */
2278 field_size
= EC_GROUP_get_degree(group
);
2279 if (field_size
<= 0)
2281 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2285 i
= ECDH_compute_key(p
, (field_size
+7)/8, clnt_ecpoint
, srvr_ecdh
, NULL
);
2288 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2293 EVP_PKEY_free(clnt_pub_pkey
);
2294 EC_POINT_free(clnt_ecpoint
);
2295 if (srvr_ecdh
!= NULL
)
2296 EC_KEY_free(srvr_ecdh
);
2297 BN_CTX_free(bn_ctx
);
2299 /* Compute the master secret */
2300 s
->session
->master_key_length
= s
->method
->ssl3_enc
-> \
2301 generate_master_secret(s
, s
->session
->master_key
, p
, i
);
2303 OPENSSL_cleanse(p
, i
);
2308 #ifndef OPENSSL_NO_PSK
2309 if (alg_k
& SSL_kPSK
)
2311 unsigned char *t
= NULL
;
2312 unsigned char psk_or_pre_ms
[PSK_MAX_PSK_LEN
*2+4];
2313 unsigned int pre_ms_len
= 0, psk_len
= 0;
2315 char tmp_id
[PSK_MAX_IDENTITY_LEN
+1];
2317 al
=SSL_AD_HANDSHAKE_FAILURE
;
2322 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2323 SSL_R_LENGTH_MISMATCH
);
2326 if (i
> PSK_MAX_IDENTITY_LEN
)
2328 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2329 SSL_R_DATA_LENGTH_TOO_LONG
);
2332 if (s
->psk_server_callback
== NULL
)
2334 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2335 SSL_R_PSK_NO_SERVER_CB
);
2339 /* Create guaranteed NULL-terminated identity
2340 * string for the callback */
2341 memcpy(tmp_id
, p
, i
);
2342 memset(tmp_id
+i
, 0, PSK_MAX_IDENTITY_LEN
+1-i
);
2343 psk_len
= s
->psk_server_callback(s
, tmp_id
,
2344 psk_or_pre_ms
, sizeof(psk_or_pre_ms
));
2345 OPENSSL_cleanse(tmp_id
, PSK_MAX_IDENTITY_LEN
+1);
2347 if (psk_len
> PSK_MAX_PSK_LEN
)
2349 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2350 ERR_R_INTERNAL_ERROR
);
2353 else if (psk_len
== 0)
2355 /* PSK related to the given identity not found */
2356 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2357 SSL_R_PSK_IDENTITY_NOT_FOUND
);
2358 al
=SSL_AD_UNKNOWN_PSK_IDENTITY
;
2362 /* create PSK pre_master_secret */
2363 pre_ms_len
=2+psk_len
+2+psk_len
;
2365 memmove(psk_or_pre_ms
+psk_len
+4, psk_or_pre_ms
, psk_len
);
2367 memset(t
, 0, psk_len
);
2371 if (s
->session
->psk_identity
!= NULL
)
2372 OPENSSL_free(s
->session
->psk_identity
);
2373 s
->session
->psk_identity
= BUF_strdup((char *)p
);
2374 if (s
->session
->psk_identity
== NULL
)
2376 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2377 ERR_R_MALLOC_FAILURE
);
2381 if (s
->session
->psk_identity_hint
!= NULL
)
2382 OPENSSL_free(s
->session
->psk_identity_hint
);
2383 s
->session
->psk_identity_hint
= BUF_strdup(s
->ctx
->psk_identity_hint
);
2384 if (s
->ctx
->psk_identity_hint
!= NULL
&&
2385 s
->session
->psk_identity_hint
== NULL
)
2387 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2388 ERR_R_MALLOC_FAILURE
);
2392 s
->session
->master_key_length
=
2393 s
->method
->ssl3_enc
->generate_master_secret(s
,
2394 s
->session
->master_key
, psk_or_pre_ms
, pre_ms_len
);
2397 OPENSSL_cleanse(psk_or_pre_ms
, sizeof(psk_or_pre_ms
));
2403 if (alg_k
& SSL_kGOST
)
2405 EVP_PKEY_CTX
*pkey_ctx
;
2406 unsigned char premaster_secret
[32];
2409 /* Get our certificate privatec key*/
2410 pkey_ctx
= EVP_PKEY_CTX_new(s
->cert
->key
->privatekey
,NULL
);
2411 EVP_PKEY_decrypt_init(pkey_ctx
);
2412 /* Decrypt session key */
2413 if ((*p
!=( V_ASN1_SEQUENCE
| V_ASN1_CONSTRUCTED
)) || p
[1]!=0x81 )
2415 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,SSL_R_DECRYPTION_FAILED
);
2418 if (EVP_PKEY_decrypt(pkey_ctx
,premaster_secret
,&outlen
,p
+3,p
[2]) <0)
2421 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,SSL_R_DECRYPTION_FAILED
);
2424 /* Generate master secret */
2425 EVP_PKEY_CTX_free(pkey_ctx
);
2426 s
->session
->master_key_length
=
2427 s
->method
->ssl3_enc
->generate_master_secret(s
,
2428 s
->session
->master_key
,premaster_secret
,32);
2433 al
=SSL_AD_HANDSHAKE_FAILURE
;
2434 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE
,
2435 SSL_R_UNKNOWN_CIPHER_TYPE
);
2441 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
2442 #if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_RSA) || !defined(OPENSSL_NO_ECDH)
2445 #ifndef OPENSSL_NO_ECDH
2446 EVP_PKEY_free(clnt_pub_pkey
);
2447 EC_POINT_free(clnt_ecpoint
);
2448 if (srvr_ecdh
!= NULL
)
2449 EC_KEY_free(srvr_ecdh
);
2450 BN_CTX_free(bn_ctx
);
2455 int ssl3_get_cert_verify(SSL
*s
)
2457 EVP_PKEY
*pkey
=NULL
;
2464 n
=s
->method
->ssl_get_message(s
,
2465 SSL3_ST_SR_CERT_VRFY_A
,
2466 SSL3_ST_SR_CERT_VRFY_B
,
2471 if (!ok
) return((int)n
);
2473 if (s
->session
->peer
!= NULL
)
2475 peer
=s
->session
->peer
;
2476 pkey
=X509_get_pubkey(peer
);
2477 type
=X509_certificate_type(peer
,pkey
);
2485 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE_VERIFY
)
2487 s
->s3
->tmp
.reuse_message
=1;
2488 if ((peer
!= NULL
) && (type
| EVP_PKT_SIGN
))
2490 al
=SSL_AD_UNEXPECTED_MESSAGE
;
2491 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY
,SSL_R_MISSING_VERIFY_MESSAGE
);
2500 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY
,SSL_R_NO_CLIENT_CERT_RECEIVED
);
2501 al
=SSL_AD_UNEXPECTED_MESSAGE
;
2505 if (!(type
& EVP_PKT_SIGN
))
2507 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY
,SSL_R_SIGNATURE_FOR_NON_SIGNING_CERTIFICATE
);
2508 al
=SSL_AD_ILLEGAL_PARAMETER
;
2512 if (s
->s3
->change_cipher_spec
)
2514 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY
,SSL_R_CCS_RECEIVED_EARLY
);
2515 al
=SSL_AD_UNEXPECTED_MESSAGE
;
2519 /* we now have a signature that we need to verify */
2520 p
=(unsigned char *)s
->init_msg
;
2521 /* Check for broken implementations of GOST ciphersuites */
2522 /* If key is GOST and n is exactly 64, it is bare
2523 * signature without length field */
2524 if (n
==64 && (pkey
->type
==NID_id_GostR3410_94
||
2525 pkey
->type
== NID_id_GostR3410_2001
) )
2535 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY
,SSL_R_LENGTH_MISMATCH
);
2536 al
=SSL_AD_DECODE_ERROR
;
2540 j
=EVP_PKEY_size(pkey
);
2541 if ((i
> j
) || (n
> j
) || (n
<= 0))
2543 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY
,SSL_R_WRONG_SIGNATURE_SIZE
);
2544 al
=SSL_AD_DECODE_ERROR
;
2548 #ifndef OPENSSL_NO_RSA
2549 if (pkey
->type
== EVP_PKEY_RSA
)
2551 i
=RSA_verify(NID_md5_sha1
, s
->s3
->tmp
.cert_verify_md
,
2552 MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
, p
, i
,
2556 al
=SSL_AD_DECRYPT_ERROR
;
2557 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY
,SSL_R_BAD_RSA_DECRYPT
);
2562 al
=SSL_AD_DECRYPT_ERROR
;
2563 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY
,SSL_R_BAD_RSA_SIGNATURE
);
2569 #ifndef OPENSSL_NO_DSA
2570 if (pkey
->type
== EVP_PKEY_DSA
)
2572 j
=DSA_verify(pkey
->save_type
,
2573 &(s
->s3
->tmp
.cert_verify_md
[MD5_DIGEST_LENGTH
]),
2574 SHA_DIGEST_LENGTH
,p
,i
,pkey
->pkey
.dsa
);
2578 al
=SSL_AD_DECRYPT_ERROR
;
2579 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY
,SSL_R_BAD_DSA_SIGNATURE
);
2585 #ifndef OPENSSL_NO_ECDSA
2586 if (pkey
->type
== EVP_PKEY_EC
)
2588 j
=ECDSA_verify(pkey
->save_type
,
2589 &(s
->s3
->tmp
.cert_verify_md
[MD5_DIGEST_LENGTH
]),
2590 SHA_DIGEST_LENGTH
,p
,i
,pkey
->pkey
.ec
);
2594 al
=SSL_AD_DECRYPT_ERROR
;
2595 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY
,
2596 SSL_R_BAD_ECDSA_SIGNATURE
);
2602 if (pkey
->type
== NID_id_GostR3410_94
|| pkey
->type
== NID_id_GostR3410_2001
)
2603 { unsigned char signature
[64];
2605 EVP_PKEY_CTX
*pctx
= EVP_PKEY_CTX_new(pkey
,NULL
);
2606 EVP_PKEY_verify_init(pctx
);
2608 fprintf(stderr
,"GOST signature length is %d",i
);
2610 for (idx
=0;idx
<64;idx
++) {
2611 signature
[63-idx
]=p
[idx
];
2613 j
=EVP_PKEY_verify(pctx
,signature
,64,s
->s3
->tmp
.cert_verify_md
,32);
2614 EVP_PKEY_CTX_free(pctx
);
2617 al
=SSL_AD_DECRYPT_ERROR
;
2618 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY
,
2619 SSL_R_BAD_ECDSA_SIGNATURE
);
2625 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY
,ERR_R_INTERNAL_ERROR
);
2626 al
=SSL_AD_UNSUPPORTED_CERTIFICATE
;
2635 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
2638 EVP_PKEY_free(pkey
);
2642 int ssl3_get_client_certificate(SSL
*s
)
2644 int i
,ok
,al
,ret
= -1;
2646 unsigned long l
,nc
,llen
,n
;
2647 const unsigned char *p
,*q
;
2649 STACK_OF(X509
) *sk
=NULL
;
2651 n
=s
->method
->ssl_get_message(s
,
2658 if (!ok
) return((int)n
);
2660 if (s
->s3
->tmp
.message_type
== SSL3_MT_CLIENT_KEY_EXCHANGE
)
2662 if ( (s
->verify_mode
& SSL_VERIFY_PEER
) &&
2663 (s
->verify_mode
& SSL_VERIFY_FAIL_IF_NO_PEER_CERT
))
2665 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE
,SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE
);
2666 al
=SSL_AD_HANDSHAKE_FAILURE
;
2669 /* If tls asked for a client cert, the client must return a 0 list */
2670 if ((s
->version
> SSL3_VERSION
) && s
->s3
->tmp
.cert_request
)
2672 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE
,SSL_R_TLS_PEER_DID_NOT_RESPOND_WITH_CERTIFICATE_LIST
);
2673 al
=SSL_AD_UNEXPECTED_MESSAGE
;
2676 s
->s3
->tmp
.reuse_message
=1;
2680 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE
)
2682 al
=SSL_AD_UNEXPECTED_MESSAGE
;
2683 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE
,SSL_R_WRONG_MESSAGE_TYPE
);
2686 p
=d
=(unsigned char *)s
->init_msg
;
2688 if ((sk
=sk_X509_new_null()) == NULL
)
2690 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
2697 al
=SSL_AD_DECODE_ERROR
;
2698 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE
,SSL_R_LENGTH_MISMATCH
);
2701 for (nc
=0; nc
<llen
; )
2704 if ((l
+nc
+3) > llen
)
2706 al
=SSL_AD_DECODE_ERROR
;
2707 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
2712 x
=d2i_X509(NULL
,&p
,l
);
2715 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE
,ERR_R_ASN1_LIB
);
2720 al
=SSL_AD_DECODE_ERROR
;
2721 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
2724 if (!sk_X509_push(sk
,x
))
2726 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
2733 if (sk_X509_num(sk
) <= 0)
2735 /* TLS does not mind 0 certs returned */
2736 if (s
->version
== SSL3_VERSION
)
2738 al
=SSL_AD_HANDSHAKE_FAILURE
;
2739 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE
,SSL_R_NO_CERTIFICATES_RETURNED
);
2742 /* Fail for TLS only if we required a certificate */
2743 else if ((s
->verify_mode
& SSL_VERIFY_PEER
) &&
2744 (s
->verify_mode
& SSL_VERIFY_FAIL_IF_NO_PEER_CERT
))
2746 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE
,SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE
);
2747 al
=SSL_AD_HANDSHAKE_FAILURE
;
2753 i
=ssl_verify_cert_chain(s
,sk
);
2756 al
=ssl_verify_alarm_type(s
->verify_result
);
2757 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE
,SSL_R_NO_CERTIFICATE_RETURNED
);
2762 if (s
->session
->peer
!= NULL
) /* This should not be needed */
2763 X509_free(s
->session
->peer
);
2764 s
->session
->peer
=sk_X509_shift(sk
);
2765 s
->session
->verify_result
= s
->verify_result
;
2767 /* With the current implementation, sess_cert will always be NULL
2768 * when we arrive here. */
2769 if (s
->session
->sess_cert
== NULL
)
2771 s
->session
->sess_cert
= ssl_sess_cert_new();
2772 if (s
->session
->sess_cert
== NULL
)
2774 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE
, ERR_R_MALLOC_FAILURE
);
2778 if (s
->session
->sess_cert
->cert_chain
!= NULL
)
2779 sk_X509_pop_free(s
->session
->sess_cert
->cert_chain
, X509_free
);
2780 s
->session
->sess_cert
->cert_chain
=sk
;
2781 /* Inconsistency alert: cert_chain does *not* include the
2782 * peer's own certificate, while we do include it in s3_clnt.c */
2790 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
2793 if (x
!= NULL
) X509_free(x
);
2794 if (sk
!= NULL
) sk_X509_pop_free(sk
,X509_free
);
2798 int ssl3_send_server_certificate(SSL
*s
)
2803 if (s
->state
== SSL3_ST_SW_CERT_A
)
2805 x
=ssl_get_server_send_cert(s
);
2808 /* VRS: allow null cert if auth == KRB5 */
2809 if ((s
->s3
->tmp
.new_cipher
->algorithm_auth
!= SSL_aKRB5
) ||
2810 (s
->s3
->tmp
.new_cipher
->algorithm_mkey
& SSL_kKRB5
))
2812 SSLerr(SSL_F_SSL3_SEND_SERVER_CERTIFICATE
,ERR_R_INTERNAL_ERROR
);
2817 l
=ssl3_output_cert_chain(s
,x
);
2818 s
->state
=SSL3_ST_SW_CERT_B
;
2823 /* SSL3_ST_SW_CERT_B */
2824 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
2826 #ifndef OPENSSL_NO_TLSEXT
2827 int ssl3_send_newsession_ticket(SSL
*s
)
2829 if (s
->state
== SSL3_ST_SW_SESSION_TICKET_A
)
2831 unsigned char *p
, *senc
, *macstart
;
2837 /* get session encoding length */
2838 slen
= i2d_SSL_SESSION(s
->session
, NULL
);
2839 /* Some length values are 16 bits, so forget it if session is
2844 /* Grow buffer if need be: the length calculation is as
2845 * follows 1 (size of message name) + 3 (message length
2846 * bytes) + 4 (ticket lifetime hint) + 2 (ticket length) +
2847 * 16 (key name) + max_iv_len (iv length) +
2848 * session_length + max_enc_block_size (max encrypted session
2849 * length) + max_md_size (HMAC).
2851 if (!BUF_MEM_grow(s
->init_buf
,
2852 26 + EVP_MAX_IV_LENGTH
+ EVP_MAX_BLOCK_LENGTH
+
2853 EVP_MAX_MD_SIZE
+ slen
))
2855 senc
= OPENSSL_malloc(slen
);
2859 i2d_SSL_SESSION(s
->session
, &p
);
2861 p
=(unsigned char *)s
->init_buf
->data
;
2863 *(p
++)=SSL3_MT_NEWSESSION_TICKET
;
2864 /* Skip message length for now */
2866 l2n(s
->session
->tlsext_tick_lifetime_hint
, p
);
2867 /* Skip ticket length for now */
2869 /* Output key name */
2871 memcpy(p
, s
->ctx
->tlsext_tick_key_name
, 16);
2873 /* Generate and output IV */
2874 RAND_pseudo_bytes(p
, 16);
2875 EVP_CIPHER_CTX_init(&ctx
);
2876 /* Encrypt session data */
2877 EVP_EncryptInit_ex(&ctx
, EVP_aes_128_cbc(), NULL
,
2878 s
->ctx
->tlsext_tick_aes_key
, p
);
2880 EVP_EncryptUpdate(&ctx
, p
, &len
, senc
, slen
);
2882 EVP_EncryptFinal(&ctx
, p
, &len
);
2884 EVP_CIPHER_CTX_cleanup(&ctx
);
2886 HMAC_CTX_init(&hctx
);
2887 HMAC_Init_ex(&hctx
, s
->ctx
->tlsext_tick_hmac_key
, 16,
2888 tlsext_tick_md(), NULL
);
2889 HMAC_Update(&hctx
, macstart
, p
- macstart
);
2890 HMAC_Final(&hctx
, p
, &hlen
);
2891 HMAC_CTX_cleanup(&hctx
);
2894 /* Now write out lengths: p points to end of data written */
2896 len
= p
- (unsigned char *)s
->init_buf
->data
;
2897 p
=(unsigned char *)s
->init_buf
->data
+ 1;
2898 l2n3(len
- 4, p
); /* Message length */
2900 s2n(len
- 10, p
); /* Ticket length */
2902 /* number of bytes to write */
2904 s
->state
=SSL3_ST_SW_SESSION_TICKET_B
;
2909 /* SSL3_ST_SW_SESSION_TICKET_B */
2910 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
2913 int ssl3_send_cert_status(SSL
*s
)
2915 if (s
->state
== SSL3_ST_SW_CERT_STATUS_A
)
2918 /* Grow buffer if need be: the length calculation is as
2919 * follows 1 (message type) + 3 (message length) +
2920 * 1 (ocsp response type) + 3 (ocsp response length)
2923 if (!BUF_MEM_grow(s
->init_buf
, 8 + s
->tlsext_ocsp_resplen
))
2926 p
=(unsigned char *)s
->init_buf
->data
;
2929 *(p
++)=SSL3_MT_CERTIFICATE_STATUS
;
2930 /* message length */
2931 l2n3(s
->tlsext_ocsp_resplen
+ 4, p
);
2933 *(p
++)= s
->tlsext_status_type
;
2934 /* length of OCSP response */
2935 l2n3(s
->tlsext_ocsp_resplen
, p
);
2936 /* actual response */
2937 memcpy(p
, s
->tlsext_ocsp_resp
, s
->tlsext_ocsp_resplen
);
2938 /* number of bytes to write */
2939 s
->init_num
= 8 + s
->tlsext_ocsp_resplen
;
2940 s
->state
=SSL3_ST_SW_CERT_STATUS_B
;
2944 /* SSL3_ST_SW_CERT_STATUS_B */
2945 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));