2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
114 * Portions of the attached software ("Contribution") are developed by
115 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
117 * The Contribution is licensed pursuant to the OpenSSL open source
118 * license provided above.
120 * ECC cipher suite support in OpenSSL originally written by
121 * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
124 /* ====================================================================
125 * Copyright 2005 Nokia. All rights reserved.
127 * The portions of the attached software ("Contribution") is developed by
128 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
131 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
132 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
133 * support (see RFC 4279) to OpenSSL.
135 * No patent licenses or other rights except those expressly stated in
136 * the OpenSSL open source license shall be deemed granted or received
137 * expressly, by implication, estoppel, or otherwise.
139 * No assurances are provided by Nokia that the Contribution does not
140 * infringe the patent or other intellectual property rights of any third
141 * party or that the license provides you with all the necessary rights
142 * to make use of the Contribution.
144 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
145 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
146 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
147 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
152 #include "ssl_locl.h"
153 #include <openssl/buffer.h>
154 #include <openssl/rand.h>
155 #include <openssl/objects.h>
156 #include <openssl/evp.h>
157 #include <openssl/md5.h>
158 #ifndef OPENSSL_NO_DH
159 # include <openssl/dh.h>
161 #include <openssl/bn.h>
162 #ifndef OPENSSL_NO_ENGINE
163 # include <openssl/engine.h>
166 static int ssl_set_version(SSL *s);
167 static int ca_dn_cmp(const X509_NAME *const *a, const X509_NAME *const *b);
168 static int ssl3_check_finished(SSL *s);
169 static int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
171 int (*put_cb) (const SSL_CIPHER *,
175 int ssl3_connect(SSL *s)
178 unsigned long Time = (unsigned long)time(NULL);
179 void (*cb) (const SSL *ssl, int type, int val) = NULL;
181 int new_state, state, skip = 0;
183 RAND_add(&Time, sizeof(Time), 0);
187 if (s->info_callback != NULL)
188 cb = s->info_callback;
189 else if (s->ctx->info_callback != NULL)
190 cb = s->ctx->info_callback;
193 if (!SSL_in_init(s) || SSL_in_before(s)) {
198 #ifndef OPENSSL_NO_HEARTBEATS
200 * If we're awaiting a HeartbeatResponse, pretend we already got and
201 * don't await it anymore, because Heartbeats don't make sense during
204 if (s->tlsext_hb_pending) {
205 s->tlsext_hb_pending = 0;
214 case SSL_ST_RENEGOTIATE:
216 s->state = SSL_ST_CONNECT;
217 s->ctx->stats.sess_connect_renegotiate++;
221 case SSL_ST_BEFORE | SSL_ST_CONNECT:
222 case SSL_ST_OK | SSL_ST_CONNECT:
226 cb(s, SSL_CB_HANDSHAKE_START, 1);
228 if ((s->version >> 8) != SSL3_VERSION_MAJOR
229 && s->version != TLS_ANY_VERSION) {
230 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
231 s->state = SSL_ST_ERR;
236 if (s->version != TLS_ANY_VERSION &&
237 !ssl_security(s, SSL_SECOP_VERSION, 0, s->version, NULL)) {
238 SSLerr(SSL_F_SSL3_CONNECT, SSL_R_VERSION_TOO_LOW);
242 /* s->version=SSL3_VERSION; */
243 s->type = SSL_ST_CONNECT;
245 if (s->init_buf == NULL) {
246 if ((buf = BUF_MEM_new()) == NULL) {
248 s->state = SSL_ST_ERR;
251 if (!BUF_MEM_grow(buf, SSL3_RT_MAX_PLAIN_LENGTH)) {
253 s->state = SSL_ST_ERR;
260 if (!ssl3_setup_buffers(s)) {
265 /* setup buffing BIO */
266 if (!ssl_init_wbio_buffer(s, 0)) {
268 s->state = SSL_ST_ERR;
272 /* don't push the buffering BIO quite yet */
274 ssl3_init_finished_mac(s);
276 s->state = SSL3_ST_CW_CLNT_HELLO_A;
277 s->ctx->stats.sess_connect++;
279 s->s3->flags &= ~SSL3_FLAGS_CCS_OK;
281 * Should have been reset by ssl3_get_finished, too.
283 s->s3->change_cipher_spec = 0;
286 case SSL3_ST_CW_CLNT_HELLO_A:
287 case SSL3_ST_CW_CLNT_HELLO_B:
290 ret = ssl3_client_hello(s);
293 s->state = SSL3_ST_CR_SRVR_HELLO_A;
296 /* turn on buffering for the next lot of output */
297 if (s->bbio != s->wbio)
298 s->wbio = BIO_push(s->bbio, s->wbio);
302 case SSL3_ST_CR_SRVR_HELLO_A:
303 case SSL3_ST_CR_SRVR_HELLO_B:
304 ret = ssl3_get_server_hello(s);
309 s->state = SSL3_ST_CR_FINISHED_A;
310 if (s->tlsext_ticket_expected) {
311 /* receive renewed session ticket */
312 s->state = SSL3_ST_CR_SESSION_TICKET_A;
315 s->state = SSL3_ST_CR_CERT_A;
319 case SSL3_ST_CR_CERT_A:
320 case SSL3_ST_CR_CERT_B:
321 /* Noop (ret = 0) for everything but EAP-FAST. */
322 ret = ssl3_check_finished(s);
327 s->state = SSL3_ST_CR_FINISHED_A;
332 /* Check if it is anon DH/ECDH, SRP auth */
336 new_cipher->algorithm_auth & (SSL_aNULL | SSL_aSRP))
337 && !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)) {
338 ret = ssl3_get_server_certificate(s);
342 if (s->tlsext_status_expected)
343 s->state = SSL3_ST_CR_CERT_STATUS_A;
345 s->state = SSL3_ST_CR_KEY_EXCH_A;
348 s->state = SSL3_ST_CR_KEY_EXCH_A;
354 case SSL3_ST_CR_KEY_EXCH_A:
355 case SSL3_ST_CR_KEY_EXCH_B:
356 ret = ssl3_get_key_exchange(s);
359 s->state = SSL3_ST_CR_CERT_REQ_A;
363 * at this point we check that we have the required stuff from
366 if (!ssl3_check_cert_and_algorithm(s)) {
368 s->state = SSL_ST_ERR;
373 case SSL3_ST_CR_CERT_REQ_A:
374 case SSL3_ST_CR_CERT_REQ_B:
375 ret = ssl3_get_certificate_request(s);
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);
387 #ifndef OPENSSL_NO_SRP
388 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP) {
389 if ((ret = SRP_Calc_A_param(s)) <= 0) {
390 SSLerr(SSL_F_SSL3_CONNECT, SSL_R_SRP_A_CALC);
391 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
392 s->state = SSL_ST_ERR;
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);
412 s->state = SSL3_ST_CW_KEY_EXCH_A;
416 case SSL3_ST_CW_KEY_EXCH_A:
417 case SSL3_ST_CW_KEY_EXCH_B:
418 ret = ssl3_send_client_key_exchange(s);
422 * EAY EAY EAY need to check for DH fix cert sent back
425 * For TLS, cert_req is set to 2, so a cert chain of nothing is
426 * sent, but no verify packet is sent
429 * XXX: For now, we do not support client authentication in ECDH
430 * cipher suites with ECDH (rather than ECDSA) certificates. We
431 * need to skip the certificate verify message when client's
432 * ECDH public key is sent inside the client certificate.
434 if (s->s3->tmp.cert_req == 1) {
435 s->state = SSL3_ST_CW_CERT_VRFY_A;
437 s->state = SSL3_ST_CW_CHANGE_A;
439 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY) {
440 s->state = SSL3_ST_CW_CHANGE_A;
446 case SSL3_ST_CW_CERT_VRFY_A:
447 case SSL3_ST_CW_CERT_VRFY_B:
448 ret = ssl3_send_client_verify(s);
451 s->state = SSL3_ST_CW_CHANGE_A;
455 case SSL3_ST_CW_CHANGE_A:
456 case SSL3_ST_CW_CHANGE_B:
457 ret = ssl3_send_change_cipher_spec(s,
459 SSL3_ST_CW_CHANGE_B);
463 #if 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 = s->s3->tmp.new_compression->id;
482 if (!s->method->ssl3_enc->setup_key_block(s)) {
484 s->state = SSL_ST_ERR;
488 if (!s->method->ssl3_enc->change_cipher_state(s,
489 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
492 s->state = SSL_ST_ERR;
498 #if !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);
504 s->state = SSL3_ST_CW_FINISHED_A;
508 case SSL3_ST_CW_FINISHED_A:
509 case SSL3_ST_CW_FINISHED_B:
510 ret = ssl3_send_finished(s,
511 SSL3_ST_CW_FINISHED_A,
512 SSL3_ST_CW_FINISHED_B,
514 ssl3_enc->client_finished_label,
516 ssl3_enc->client_finished_label_len);
519 s->state = SSL3_ST_CW_FLUSH;
522 s->s3->flags &= ~SSL3_FLAGS_POP_BUFFER;
524 s->s3->tmp.next_state = SSL_ST_OK;
525 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED) {
526 s->state = SSL_ST_OK;
527 s->s3->flags |= SSL3_FLAGS_POP_BUFFER;
528 s->s3->delay_buf_pop_ret = 0;
532 * Allow NewSessionTicket if ticket expected
534 if (s->tlsext_ticket_expected)
535 s->s3->tmp.next_state = SSL3_ST_CR_SESSION_TICKET_A;
537 s->s3->tmp.next_state = SSL3_ST_CR_FINISHED_A;
542 case SSL3_ST_CR_SESSION_TICKET_A:
543 case SSL3_ST_CR_SESSION_TICKET_B:
544 ret = ssl3_get_new_session_ticket(s);
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);
556 s->state = SSL3_ST_CR_KEY_EXCH_A;
560 case SSL3_ST_CR_FINISHED_A:
561 case SSL3_ST_CR_FINISHED_B:
562 if (!s->s3->change_cipher_spec)
563 s->s3->flags |= SSL3_FLAGS_CCS_OK;
564 ret = ssl3_get_finished(s, SSL3_ST_CR_FINISHED_A,
565 SSL3_ST_CR_FINISHED_B);
570 s->state = SSL3_ST_CW_CHANGE_A;
572 s->state = SSL_ST_OK;
576 case SSL3_ST_CW_FLUSH:
577 s->rwstate = SSL_WRITING;
578 if (BIO_flush(s->wbio) <= 0) {
582 s->rwstate = SSL_NOTHING;
583 s->state = s->s3->tmp.next_state;
587 /* clean a few things up */
588 ssl3_cleanup_key_block(s);
589 BUF_MEM_free(s->init_buf);
593 * If we are not 'joining' the last two packets, remove the
596 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
597 ssl_free_wbio_buffer(s);
598 /* else do it later in ssl3_write */
604 ssl_update_cache(s, SSL_SESS_CACHE_CLIENT);
606 s->ctx->stats.sess_hit++;
610 s->handshake_func = ssl3_connect;
611 s->ctx->stats.sess_connect_good++;
614 cb(s, SSL_CB_HANDSHAKE_DONE, 1);
621 SSLerr(SSL_F_SSL3_CONNECT, SSL_R_UNKNOWN_STATE);
627 /* did we do anything */
628 if (!s->s3->tmp.reuse_message && !skip) {
630 if ((ret = BIO_flush(s->wbio)) <= 0)
634 if ((cb != NULL) && (s->state != state)) {
635 new_state = s->state;
637 cb(s, SSL_CB_CONNECT_LOOP, 1);
638 s->state = new_state;
647 cb(s, SSL_CB_CONNECT_EXIT, ret);
652 * Work out what version we should be using for the initial ClientHello if
653 * the version is currently set to (D)TLS_ANY_VERSION.
654 * Returns 1 on success
657 static int ssl_set_version(SSL *s)
659 unsigned long mask, options = s->options;
661 if (s->method->version == TLS_ANY_VERSION) {
663 * SSL_OP_NO_X disables all protocols above X *if* there are
664 * some protocols below X enabled. This is required in order
665 * to maintain "version capability" vector contiguous. So
666 * that if application wants to disable TLS1.0 in favour of
667 * TLS1>=1, it would be insufficient to pass SSL_NO_TLSv1, the
668 * answer is SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3.
670 mask = SSL_OP_NO_TLSv1_1 | SSL_OP_NO_TLSv1
671 #if !defined(OPENSSL_NO_SSL3)
675 #if !defined(OPENSSL_NO_TLS1_2_CLIENT)
676 if (options & SSL_OP_NO_TLSv1_2) {
677 if ((options & mask) != mask) {
678 s->version = TLS1_1_VERSION;
680 SSLerr(SSL_F_SSL_SET_VERSION, SSL_R_NO_PROTOCOLS_AVAILABLE);
684 s->version = TLS1_2_VERSION;
687 if ((options & mask) == mask) {
688 SSLerr(SSL_F_SSL_SET_VERSION, SSL_R_NO_PROTOCOLS_AVAILABLE);
691 s->version = TLS1_1_VERSION;
694 mask &= ~SSL_OP_NO_TLSv1_1;
695 if ((options & SSL_OP_NO_TLSv1_1) && (options & mask) != mask)
696 s->version = TLS1_VERSION;
697 mask &= ~SSL_OP_NO_TLSv1;
698 #if !defined(OPENSSL_NO_SSL3)
699 if ((options & SSL_OP_NO_TLSv1) && (options & mask) != mask)
700 s->version = SSL3_VERSION;
703 if (s->version != TLS1_2_VERSION && tls1_suiteb(s)) {
704 SSLerr(SSL_F_SSL_SET_VERSION,
705 SSL_R_ONLY_TLS_1_2_ALLOWED_IN_SUITEB_MODE);
709 if (s->version == SSL3_VERSION && FIPS_mode()) {
710 SSLerr(SSL_F_SSL_SET_VERSION, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
714 } else if (s->method->version == DTLS_ANY_VERSION) {
715 /* Determine which DTLS version to use */
716 /* If DTLS 1.2 disabled correct the version number */
717 if (options & SSL_OP_NO_DTLSv1_2) {
718 if (tls1_suiteb(s)) {
719 SSLerr(SSL_F_SSL_SET_VERSION,
720 SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE);
724 * Disabling all versions is silly: return an error.
726 if (options & SSL_OP_NO_DTLSv1) {
727 SSLerr(SSL_F_SSL_SET_VERSION, SSL_R_WRONG_SSL_VERSION);
731 * Update method so we don't use any DTLS 1.2 features.
733 s->method = DTLSv1_client_method();
734 s->version = DTLS1_VERSION;
737 * We only support one version: update method
739 if (options & SSL_OP_NO_DTLSv1)
740 s->method = DTLSv1_2_client_method();
741 s->version = DTLS1_2_VERSION;
745 s->client_version = s->version;
750 int ssl3_client_hello(SSL *s)
753 unsigned char *p, *d;
757 #ifndef OPENSSL_NO_COMP
762 buf = (unsigned char *)s->init_buf->data;
763 if (s->state == SSL3_ST_CW_CLNT_HELLO_A) {
764 SSL_SESSION *sess = s->session;
766 /* Work out what SSL/TLS/DTLS version to use */
767 if (ssl_set_version(s) == 0)
770 if ((sess == NULL) || (sess->ssl_version != s->version) ||
772 * In the case of EAP-FAST, we can have a pre-shared
773 * "ticket" without a session ID.
775 (!sess->session_id_length && !sess->tlsext_tick) ||
776 (sess->not_resumable)) {
777 if (!ssl_get_new_session(s, 0))
780 /* else use the pre-loaded session */
782 p = s->s3->client_random;
785 * for DTLS if client_random is initialized, reuse it, we are
786 * required to use same upon reply to HelloVerify
788 if (SSL_IS_DTLS(s)) {
791 for (idx = 0; idx < sizeof(s->s3->client_random); idx++) {
800 if (i && ssl_fill_hello_random(s, 0, p,
801 sizeof(s->s3->client_random)) <= 0)
804 /* Do the message type and length last */
805 d = p = ssl_handshake_start(s);
808 * version indicates the negotiated version: for example from
809 * an SSLv2/v3 compatible client hello). The client_version
810 * field is the maximum version we permit and it is also
811 * used in RSA encrypted premaster secrets. Some servers can
812 * choke if we initially report a higher version then
813 * renegotiate to a lower one in the premaster secret. This
814 * didn't happen with TLS 1.0 as most servers supported it
815 * but it can with TLS 1.1 or later if the server only supports
818 * Possible scenario with previous logic:
819 * 1. Client hello indicates TLS 1.2
820 * 2. Server hello says TLS 1.0
821 * 3. RSA encrypted premaster secret uses 1.2.
822 * 4. Handhaked proceeds using TLS 1.0.
823 * 5. Server sends hello request to renegotiate.
824 * 6. Client hello indicates TLS v1.0 as we now
825 * know that is maximum server supports.
826 * 7. Server chokes on RSA encrypted premaster secret
827 * containing version 1.0.
829 * For interoperability it should be OK to always use the
830 * maximum version we support in client hello and then rely
831 * on the checking of version to ensure the servers isn't
832 * being inconsistent: for example initially negotiating with
833 * TLS 1.0 and renegotiating with TLS 1.2. We do this by using
834 * client_version in client hello and not resetting it to
835 * the negotiated version.
837 *(p++) = s->client_version >> 8;
838 *(p++) = s->client_version & 0xff;
841 memcpy(p, s->s3->client_random, SSL3_RANDOM_SIZE);
842 p += SSL3_RANDOM_SIZE;
848 i = s->session->session_id_length;
851 if (i > (int)sizeof(s->session->session_id)) {
852 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
855 memcpy(p, s->session->session_id, i);
859 /* cookie stuff for DTLS */
860 if (SSL_IS_DTLS(s)) {
861 if (s->d1->cookie_len > sizeof(s->d1->cookie)) {
862 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
865 *(p++) = s->d1->cookie_len;
866 memcpy(p, s->d1->cookie, s->d1->cookie_len);
867 p += s->d1->cookie_len;
870 /* Ciphers supported */
871 i = ssl_cipher_list_to_bytes(s, SSL_get_ciphers(s), &(p[2]), 0);
873 SSLerr(SSL_F_SSL3_CLIENT_HELLO, SSL_R_NO_CIPHERS_AVAILABLE);
876 #ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
878 * Some servers hang if client hello > 256 bytes as hack workaround
879 * chop number of supported ciphers to keep it well below this if we
882 if (TLS1_get_version(s) >= TLS1_2_VERSION
883 && i > OPENSSL_MAX_TLS1_2_CIPHER_LENGTH)
884 i = OPENSSL_MAX_TLS1_2_CIPHER_LENGTH & ~1;
890 #ifdef OPENSSL_NO_COMP
894 if (!ssl_allow_compression(s) || !s->ctx->comp_methods)
897 j = sk_SSL_COMP_num(s->ctx->comp_methods);
899 for (i = 0; i < j; i++) {
900 comp = sk_SSL_COMP_value(s->ctx->comp_methods, i);
904 *(p++) = 0; /* Add the NULL method */
907 if (ssl_prepare_clienthello_tlsext(s) <= 0) {
908 SSLerr(SSL_F_SSL3_CLIENT_HELLO, SSL_R_CLIENTHELLO_TLSEXT);
912 ssl_add_clienthello_tlsext(s, p, buf + SSL3_RT_MAX_PLAIN_LENGTH,
914 ssl3_send_alert(s, SSL3_AL_FATAL, al);
915 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
920 if (!ssl_set_handshake_header(s, SSL3_MT_CLIENT_HELLO, l)) {
921 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
922 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
925 s->state = SSL3_ST_CW_CLNT_HELLO_B;
928 /* SSL3_ST_CW_CLNT_HELLO_B */
929 return ssl_do_write(s);
931 s->state = SSL_ST_ERR;
935 int ssl3_get_server_hello(SSL *s)
937 STACK_OF(SSL_CIPHER) *sk;
939 unsigned char *p, *d;
940 int i, al = SSL_AD_INTERNAL_ERROR, ok;
943 #ifndef OPENSSL_NO_COMP
947 * Hello verify request and/or server hello version may not match so set
948 * first packet if we're negotiating version.
953 n = s->method->ssl_get_message(s,
954 SSL3_ST_CR_SRVR_HELLO_A,
955 SSL3_ST_CR_SRVR_HELLO_B, -1, 20000, &ok);
960 if (SSL_IS_DTLS(s)) {
962 if (s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST) {
963 if (s->d1->send_cookie == 0) {
964 s->s3->tmp.reuse_message = 1;
966 } else { /* already sent a cookie */
968 al = SSL_AD_UNEXPECTED_MESSAGE;
969 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_BAD_MESSAGE_TYPE);
975 if (s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO) {
976 al = SSL_AD_UNEXPECTED_MESSAGE;
977 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_BAD_MESSAGE_TYPE);
981 d = p = (unsigned char *)s->init_msg;
983 if (s->method->version == TLS_ANY_VERSION) {
984 int sversion = (p[0] << 8) | p[1];
986 #if TLS_MAX_VERSION != TLS1_2_VERSION
987 #error Code needs updating for new TLS version
989 #ifndef OPENSSL_NO_SSL3
990 if ((sversion == SSL3_VERSION) && !(s->options & SSL_OP_NO_SSLv3)) {
992 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,
993 SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
994 al = SSL_AD_PROTOCOL_VERSION;
997 s->method = SSLv3_client_method();
1000 if ((sversion == TLS1_VERSION) && !(s->options & SSL_OP_NO_TLSv1)) {
1001 s->method = TLSv1_client_method();
1002 } else if ((sversion == TLS1_1_VERSION) &&
1003 !(s->options & SSL_OP_NO_TLSv1_1)) {
1004 s->method = TLSv1_1_client_method();
1005 } else if ((sversion == TLS1_2_VERSION) &&
1006 !(s->options & SSL_OP_NO_TLSv1_2)) {
1007 s->method = TLSv1_2_client_method();
1009 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_UNSUPPORTED_PROTOCOL);
1010 al = SSL_AD_PROTOCOL_VERSION;
1013 s->session->ssl_version = s->version = s->method->version;
1015 if (!ssl_security(s, SSL_SECOP_VERSION, 0, s->version, NULL)) {
1016 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_VERSION_TOO_LOW);
1017 al = SSL_AD_PROTOCOL_VERSION;
1020 } else if (s->method->version == DTLS_ANY_VERSION) {
1021 /* Work out correct protocol version to use */
1022 int hversion = (p[0] << 8) | p[1];
1023 int options = s->options;
1024 if (hversion == DTLS1_2_VERSION && !(options & SSL_OP_NO_DTLSv1_2))
1025 s->method = DTLSv1_2_client_method();
1026 else if (tls1_suiteb(s)) {
1027 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,
1028 SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE);
1029 s->version = hversion;
1030 al = SSL_AD_PROTOCOL_VERSION;
1032 } else if (hversion == DTLS1_VERSION && !(options & SSL_OP_NO_DTLSv1))
1033 s->method = DTLSv1_client_method();
1035 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_WRONG_SSL_VERSION);
1036 s->version = hversion;
1037 al = SSL_AD_PROTOCOL_VERSION;
1040 s->version = s->method->version;
1041 } else if ((p[0] != (s->version >> 8)) || (p[1] != (s->version & 0xff))) {
1042 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_WRONG_SSL_VERSION);
1043 s->version = (s->version & 0xff00) | p[1];
1044 al = SSL_AD_PROTOCOL_VERSION;
1049 /* load the server hello data */
1050 /* load the server random */
1051 memcpy(s->s3->server_random, p, SSL3_RANDOM_SIZE);
1052 p += SSL3_RANDOM_SIZE;
1056 /* get the session-id */
1059 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE)) {
1060 al = SSL_AD_ILLEGAL_PARAMETER;
1061 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_SSL3_SESSION_ID_TOO_LONG);
1066 * Check if we can resume the session based on external pre-shared secret.
1067 * EAP-FAST (RFC 4851) supports two types of session resumption.
1068 * Resumption based on server-side state works with session IDs.
1069 * Resumption based on pre-shared Protected Access Credentials (PACs)
1070 * works by overriding the SessionTicket extension at the application
1071 * layer, and does not send a session ID. (We do not know whether EAP-FAST
1072 * servers would honour the session ID.) Therefore, the session ID alone
1073 * is not a reliable indicator of session resumption, so we first check if
1074 * we can resume, and later peek at the next handshake message to see if the
1075 * server wants to resume.
1077 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb &&
1078 s->session->tlsext_tick) {
1079 SSL_CIPHER *pref_cipher = NULL;
1080 s->session->master_key_length = sizeof(s->session->master_key);
1081 if (s->tls_session_secret_cb(s, s->session->master_key,
1082 &s->session->master_key_length,
1084 s->tls_session_secret_cb_arg)) {
1085 s->session->cipher = pref_cipher ?
1086 pref_cipher : ssl_get_cipher_by_char(s, p + j);
1088 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
1089 al = SSL_AD_INTERNAL_ERROR;
1094 if (j != 0 && j == s->session->session_id_length
1095 && memcmp(p, s->session->session_id, j) == 0) {
1096 if (s->sid_ctx_length != s->session->sid_ctx_length
1097 || memcmp(s->session->sid_ctx, s->sid_ctx, s->sid_ctx_length)) {
1098 /* actually a client application bug */
1099 al = SSL_AD_ILLEGAL_PARAMETER;
1100 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,
1101 SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
1107 * If we were trying for session-id reuse but the server
1108 * didn't echo the ID, make a new SSL_SESSION.
1109 * In the case of EAP-FAST and PAC, we do not send a session ID,
1110 * so the PAC-based session secret is always preserved. It'll be
1111 * overwritten if the server refuses resumption.
1113 if (s->session->session_id_length > 0) {
1114 if (!ssl_get_new_session(s, 0)) {
1118 s->session->session_id_length = j;
1119 memcpy(s->session->session_id, p, j); /* j could be 0 */
1122 c = ssl_get_cipher_by_char(s, p);
1124 /* unknown cipher */
1125 al = SSL_AD_ILLEGAL_PARAMETER;
1126 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_UNKNOWN_CIPHER_RETURNED);
1129 /* Set version disabled mask now we know version */
1130 if (!SSL_USE_TLS1_2_CIPHERS(s))
1131 s->s3->tmp.mask_ssl = SSL_TLSV1_2;
1133 s->s3->tmp.mask_ssl = 0;
1135 * If it is a disabled cipher we didn't send it in client hello, so
1138 if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_CHECK)) {
1139 al = SSL_AD_ILLEGAL_PARAMETER;
1140 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_WRONG_CIPHER_RETURNED);
1143 p += ssl_put_cipher_by_char(s, NULL, NULL);
1145 sk = ssl_get_ciphers_by_id(s);
1146 i = sk_SSL_CIPHER_find(sk, c);
1148 /* we did not say we would use this cipher */
1149 al = SSL_AD_ILLEGAL_PARAMETER;
1150 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_WRONG_CIPHER_RETURNED);
1155 * Depending on the session caching (internal/external), the cipher
1156 * and/or cipher_id values may not be set. Make sure that cipher_id is
1157 * set and use it for comparison.
1159 if (s->session->cipher)
1160 s->session->cipher_id = s->session->cipher->id;
1161 if (s->hit && (s->session->cipher_id != c->id)) {
1162 al = SSL_AD_ILLEGAL_PARAMETER;
1163 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,
1164 SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
1167 s->s3->tmp.new_cipher = c;
1169 * Don't digest cached records if no sigalgs: we may need them for client
1172 if (!SSL_USE_SIGALGS(s) && !ssl3_digest_cached_records(s))
1174 /* lets get the compression algorithm */
1176 #ifdef OPENSSL_NO_COMP
1178 al = SSL_AD_ILLEGAL_PARAMETER;
1179 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,
1180 SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
1184 * If compression is disabled we'd better not try to resume a session
1185 * using compression.
1187 if (s->session->compress_meth != 0) {
1188 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_INCONSISTENT_COMPRESSION);
1193 if (s->hit && j != s->session->compress_meth) {
1194 al = SSL_AD_ILLEGAL_PARAMETER;
1195 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,
1196 SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
1201 else if (!ssl_allow_compression(s)) {
1202 al = SSL_AD_ILLEGAL_PARAMETER;
1203 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_COMPRESSION_DISABLED);
1206 comp = ssl3_comp_find(s->ctx->comp_methods, j);
1208 if ((j != 0) && (comp == NULL)) {
1209 al = SSL_AD_ILLEGAL_PARAMETER;
1210 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,
1211 SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
1214 s->s3->tmp.new_compression = comp;
1218 /* TLS extensions */
1219 if (!ssl_parse_serverhello_tlsext(s, &p, d, n)) {
1220 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_PARSE_TLSEXT);
1225 /* wrong packet length */
1226 al = SSL_AD_DECODE_ERROR;
1227 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_BAD_PACKET_LENGTH);
1233 ssl3_send_alert(s, SSL3_AL_FATAL, al);
1235 s->state = SSL_ST_ERR;
1239 int ssl3_get_server_certificate(SSL *s)
1241 int al, i, ok, ret = -1, exp_idx;
1242 unsigned long n, nc, llen, l;
1244 const unsigned char *q, *p;
1246 STACK_OF(X509) *sk = NULL;
1248 EVP_PKEY *pkey = NULL;
1250 n = s->method->ssl_get_message(s,
1253 -1, s->max_cert_list, &ok);
1258 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) {
1259 s->s3->tmp.reuse_message = 1;
1263 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE) {
1264 al = SSL_AD_UNEXPECTED_MESSAGE;
1265 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, SSL_R_BAD_MESSAGE_TYPE);
1268 p = d = (unsigned char *)s->init_msg;
1270 if ((sk = sk_X509_new_null()) == NULL) {
1271 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, ERR_R_MALLOC_FAILURE);
1276 if (llen + 3 != n) {
1277 al = SSL_AD_DECODE_ERROR;
1278 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, SSL_R_LENGTH_MISMATCH);
1281 for (nc = 0; nc < llen;) {
1283 if ((l + nc + 3) > llen) {
1284 al = SSL_AD_DECODE_ERROR;
1285 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1286 SSL_R_CERT_LENGTH_MISMATCH);
1291 x = d2i_X509(NULL, &q, l);
1293 al = SSL_AD_BAD_CERTIFICATE;
1294 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, ERR_R_ASN1_LIB);
1298 al = SSL_AD_DECODE_ERROR;
1299 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1300 SSL_R_CERT_LENGTH_MISMATCH);
1303 if (!sk_X509_push(sk, x)) {
1304 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, ERR_R_MALLOC_FAILURE);
1312 i = ssl_verify_cert_chain(s, sk);
1313 if (s->verify_mode != SSL_VERIFY_NONE && i <= 0) {
1314 al = ssl_verify_alarm_type(s->verify_result);
1315 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1316 SSL_R_CERTIFICATE_VERIFY_FAILED);
1319 ERR_clear_error(); /* but we keep s->verify_result */
1321 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, i);
1322 al = SSL_AD_HANDSHAKE_FAILURE;
1326 sc = ssl_sess_cert_new();
1330 ssl_sess_cert_free(s->session->sess_cert);
1331 s->session->sess_cert = sc;
1333 sc->cert_chain = sk;
1335 * Inconsistency alert: cert_chain does include the peer's certificate,
1336 * which we don't include in s3_srvr.c
1338 x = sk_X509_value(sk, 0);
1341 * VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end
1344 pkey = X509_get_pubkey(x);
1346 if (pkey == NULL || EVP_PKEY_missing_parameters(pkey)) {
1349 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1350 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1354 i = ssl_cert_type(x, pkey);
1358 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1359 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1363 exp_idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
1364 if (exp_idx >= 0 && i != exp_idx) {
1366 al = SSL_AD_ILLEGAL_PARAMETER;
1367 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1368 SSL_R_WRONG_CERTIFICATE_TYPE);
1371 sc->peer_cert_type = i;
1372 CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
1374 * Why would the following ever happen? We just created sc a couple
1377 X509_free(sc->peer_pkeys[i].x509);
1378 sc->peer_pkeys[i].x509 = x;
1379 sc->peer_key = &(sc->peer_pkeys[i]);
1381 X509_free(s->session->peer);
1382 CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
1383 s->session->peer = x;
1384 s->session->verify_result = s->verify_result;
1391 ssl3_send_alert(s, SSL3_AL_FATAL, al);
1393 s->state = SSL_ST_ERR;
1395 EVP_PKEY_free(pkey);
1397 sk_X509_pop_free(sk, X509_free);
1401 int ssl3_get_key_exchange(SSL *s)
1403 #ifndef OPENSSL_NO_RSA
1404 unsigned char *q, md_buf[EVP_MAX_MD_SIZE * 2];
1407 unsigned char *param, *p;
1409 long i, param_len, n, alg_k, alg_a;
1410 EVP_PKEY *pkey = NULL;
1411 const EVP_MD *md = NULL;
1412 #ifndef OPENSSL_NO_RSA
1415 #ifndef OPENSSL_NO_DH
1418 #ifndef OPENSSL_NO_EC
1419 EC_KEY *ecdh = NULL;
1420 BN_CTX *bn_ctx = NULL;
1421 EC_POINT *srvr_ecpoint = NULL;
1423 int encoded_pt_len = 0;
1426 EVP_MD_CTX_init(&md_ctx);
1429 * use same message size as in ssl3_get_certificate_request() as
1430 * ServerKeyExchange message may be skipped
1432 n = s->method->ssl_get_message(s,
1433 SSL3_ST_CR_KEY_EXCH_A,
1434 SSL3_ST_CR_KEY_EXCH_B,
1435 -1, s->max_cert_list, &ok);
1439 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
1441 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE) {
1443 * Can't skip server key exchange if this is an ephemeral
1446 if (alg_k & (SSL_kDHE | SSL_kECDHE)) {
1447 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_UNEXPECTED_MESSAGE);
1448 al = SSL_AD_UNEXPECTED_MESSAGE;
1451 #ifndef OPENSSL_NO_PSK
1453 * In plain PSK ciphersuite, ServerKeyExchange can be omitted if no
1454 * identity hint is sent. Set session->sess_cert anyway to avoid
1457 if (alg_k & SSL_kPSK) {
1458 s->session->sess_cert = ssl_sess_cert_new();
1459 OPENSSL_free(s->ctx->psk_identity_hint);
1460 s->ctx->psk_identity_hint = NULL;
1463 s->s3->tmp.reuse_message = 1;
1467 param = p = (unsigned char *)s->init_msg;
1468 if (s->session->sess_cert != NULL) {
1469 #ifndef OPENSSL_NO_RSA
1470 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1471 s->session->sess_cert->peer_rsa_tmp = NULL;
1473 #ifndef OPENSSL_NO_DH
1474 DH_free(s->session->sess_cert->peer_dh_tmp);
1475 s->session->sess_cert->peer_dh_tmp = NULL;
1477 #ifndef OPENSSL_NO_EC
1478 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1479 s->session->sess_cert->peer_ecdh_tmp = NULL;
1482 s->session->sess_cert = ssl_sess_cert_new();
1485 /* Total length of the parameters including the length prefix */
1488 alg_a = s->s3->tmp.new_cipher->algorithm_auth;
1490 al = SSL_AD_DECODE_ERROR;
1492 #ifndef OPENSSL_NO_PSK
1493 if (alg_k & SSL_kPSK) {
1494 char tmp_id_hint[PSK_MAX_IDENTITY_LEN + 1];
1497 if (param_len > n) {
1498 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
1504 * Store PSK identity hint for later use, hint is used in
1505 * ssl3_send_client_key_exchange. Assume that the maximum length of
1506 * a PSK identity hint can be as long as the maximum length of a PSK
1509 if (i > PSK_MAX_IDENTITY_LEN) {
1510 al = SSL_AD_HANDSHAKE_FAILURE;
1511 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_DATA_LENGTH_TOO_LONG);
1514 if (i > n - param_len) {
1515 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1516 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1522 * If received PSK identity hint contains NULL characters, the hint
1523 * is truncated from the first NULL. p may not be ending with NULL,
1524 * so create a NULL-terminated string.
1526 memcpy(tmp_id_hint, p, i);
1527 memset(tmp_id_hint + i, 0, PSK_MAX_IDENTITY_LEN + 1 - i);
1528 OPENSSL_free(s->ctx->psk_identity_hint);
1529 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1530 if (s->ctx->psk_identity_hint == NULL) {
1531 al = SSL_AD_HANDSHAKE_FAILURE;
1532 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1539 #endif /* !OPENSSL_NO_PSK */
1540 #ifndef OPENSSL_NO_SRP
1541 if (alg_k & SSL_kSRP) {
1543 if (param_len > n) {
1544 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
1549 if (i > n - param_len) {
1550 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_SRP_N_LENGTH);
1555 if ((s->srp_ctx.N = BN_bin2bn(p, i, NULL)) == NULL) {
1556 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
1561 if (2 > n - param_len) {
1562 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
1569 if (i > n - param_len) {
1570 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_SRP_G_LENGTH);
1575 if ((s->srp_ctx.g = BN_bin2bn(p, i, NULL)) == NULL) {
1576 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
1581 if (1 > n - param_len) {
1582 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
1587 i = (unsigned int)(p[0]);
1590 if (i > n - param_len) {
1591 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_SRP_S_LENGTH);
1596 if ((s->srp_ctx.s = BN_bin2bn(p, i, NULL)) == NULL) {
1597 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
1602 if (2 > n - param_len) {
1603 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
1610 if (i > n - param_len) {
1611 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_SRP_B_LENGTH);
1616 if ((s->srp_ctx.B = BN_bin2bn(p, i, NULL)) == NULL) {
1617 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
1623 if (!srp_verify_server_param(s, &al)) {
1624 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_SRP_PARAMETERS);
1628 /* We must check if there is a certificate */
1629 # ifndef OPENSSL_NO_RSA
1630 if (alg_a & SSL_aRSA)
1632 X509_get_pubkey(s->session->
1633 sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1637 # ifndef OPENSSL_NO_DSA
1638 else if (alg_a & SSL_aDSS)
1640 X509_get_pubkey(s->session->
1641 sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].
1645 #endif /* !OPENSSL_NO_SRP */
1646 #ifndef OPENSSL_NO_RSA
1647 if (alg_k & SSL_kRSA) {
1648 /* Temporary RSA keys only allowed in export ciphersuites */
1649 if (!SSL_C_IS_EXPORT(s->s3->tmp.new_cipher)) {
1650 al = SSL_AD_UNEXPECTED_MESSAGE;
1651 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_UNEXPECTED_MESSAGE);
1654 if ((rsa = RSA_new()) == NULL) {
1655 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1660 if (param_len > n) {
1661 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
1666 if (i > n - param_len) {
1667 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_RSA_MODULUS_LENGTH);
1672 if ((rsa->n = BN_bin2bn(p, i, rsa->n)) == NULL) {
1673 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
1678 if (2 > n - param_len) {
1679 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
1686 if (i > n - param_len) {
1687 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_RSA_E_LENGTH);
1692 if ((rsa->e = BN_bin2bn(p, i, rsa->e)) == NULL) {
1693 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
1699 /* this should be because we are using an export cipher */
1700 if (alg_a & SSL_aRSA)
1702 X509_get_pubkey(s->session->
1703 sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1705 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
1708 s->session->sess_cert->peer_rsa_tmp = rsa;
1711 #else /* OPENSSL_NO_RSA */
1714 #ifndef OPENSSL_NO_DH
1715 else if (alg_k & SSL_kDHE) {
1716 if ((dh = DH_new()) == NULL) {
1717 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_DH_LIB);
1722 if (param_len > n) {
1723 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
1728 if (i > n - param_len) {
1729 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_DH_P_LENGTH);
1734 if ((dh->p = BN_bin2bn(p, i, NULL)) == NULL) {
1735 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
1740 if (2 > n - param_len) {
1741 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
1748 if (i > n - param_len) {
1749 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_DH_G_LENGTH);
1754 if ((dh->g = BN_bin2bn(p, i, NULL)) == NULL) {
1755 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
1760 if (2 > n - param_len) {
1761 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
1768 if (i > n - param_len) {
1769 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_DH_PUB_KEY_LENGTH);
1774 if ((dh->pub_key = BN_bin2bn(p, i, NULL)) == NULL) {
1775 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_BN_LIB);
1781 if (!ssl_security(s, SSL_SECOP_TMP_DH, DH_security_bits(dh), 0, dh)) {
1782 al = SSL_AD_HANDSHAKE_FAILURE;
1783 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_DH_KEY_TOO_SMALL);
1786 # ifndef OPENSSL_NO_RSA
1787 if (alg_a & SSL_aRSA)
1789 X509_get_pubkey(s->session->
1790 sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1794 # ifndef OPENSSL_NO_DSA
1795 else if (alg_a & SSL_aDSS)
1797 X509_get_pubkey(s->session->
1798 sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].
1801 /* else anonymous DH, so no certificate or pkey. */
1803 s->session->sess_cert->peer_dh_tmp = dh;
1806 #endif /* !OPENSSL_NO_DH */
1808 #ifndef OPENSSL_NO_EC
1809 else if (alg_k & SSL_kECDHE) {
1811 const EC_GROUP *group;
1813 if ((ecdh = EC_KEY_new()) == NULL) {
1814 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1819 * Extract elliptic curve parameters and the server's ephemeral ECDH
1820 * public key. Keep accumulating lengths of various components in
1821 * param_len and make sure it never exceeds n.
1825 * XXX: For now we only support named (not generic) curves and the
1826 * ECParameters in this case is just three bytes. We also need one
1827 * byte for the length of the encoded point
1830 if (param_len > n) {
1831 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
1835 * Check curve is one of our preferences, if not server has sent an
1836 * invalid curve. ECParameters is 3 bytes.
1838 if (!tls1_check_curve(s, p, 3)) {
1839 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_WRONG_CURVE);
1843 if ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0) {
1844 al = SSL_AD_INTERNAL_ERROR;
1845 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1846 SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1850 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1851 if (ngroup == NULL) {
1852 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_EC_LIB);
1855 if (EC_KEY_set_group(ecdh, ngroup) == 0) {
1856 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_EC_LIB);
1859 EC_GROUP_free(ngroup);
1861 group = EC_KEY_get0_group(ecdh);
1863 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1864 (EC_GROUP_get_degree(group) > 163)) {
1865 al = SSL_AD_EXPORT_RESTRICTION;
1866 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1867 SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1873 /* Next, get the encoded ECPoint */
1874 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1875 ((bn_ctx = BN_CTX_new()) == NULL)) {
1876 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1880 encoded_pt_len = *p; /* length of encoded point */
1883 if ((encoded_pt_len > n - param_len) ||
1884 (EC_POINT_oct2point(group, srvr_ecpoint,
1885 p, encoded_pt_len, bn_ctx) == 0)) {
1886 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_ECPOINT);
1889 param_len += encoded_pt_len;
1892 p += encoded_pt_len;
1895 * The ECC/TLS specification does not mention the use of DSA to sign
1896 * ECParameters in the server key exchange message. We do support RSA
1900 # ifndef OPENSSL_NO_RSA
1901 else if (alg_a & SSL_aRSA)
1903 X509_get_pubkey(s->session->
1904 sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1906 # ifndef OPENSSL_NO_EC
1907 else if (alg_a & SSL_aECDSA)
1909 X509_get_pubkey(s->session->
1910 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1912 /* else anonymous ECDH, so no certificate or pkey. */
1913 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1914 s->session->sess_cert->peer_ecdh_tmp = ecdh;
1916 BN_CTX_free(bn_ctx);
1918 EC_POINT_free(srvr_ecpoint);
1919 srvr_ecpoint = NULL;
1921 al = SSL_AD_UNEXPECTED_MESSAGE;
1922 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_UNEXPECTED_MESSAGE);
1925 #endif /* !OPENSSL_NO_EC */
1927 /* p points to the next byte, there are 'n' bytes left */
1929 /* if it was signed, check the signature */
1931 if (SSL_USE_SIGALGS(s)) {
1934 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
1937 rv = tls12_check_peer_sigalg(&md, s, p, pkey);
1944 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1952 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT);
1957 j = EVP_PKEY_size(pkey);
1960 * Check signature length. If n is 0 then signature is empty
1962 if ((i != n) || (n > j) || (n <= 0)) {
1963 /* wrong packet length */
1964 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_WRONG_SIGNATURE_LENGTH);
1967 #ifndef OPENSSL_NO_RSA
1968 if (pkey->type == EVP_PKEY_RSA && !SSL_USE_SIGALGS(s)) {
1974 for (num = 2; num > 0; num--) {
1975 EVP_MD_CTX_set_flags(&md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1976 EVP_DigestInit_ex(&md_ctx, (num == 2)
1977 ? s->ctx->md5 : s->ctx->sha1, NULL);
1978 EVP_DigestUpdate(&md_ctx, &(s->s3->client_random[0]),
1980 EVP_DigestUpdate(&md_ctx, &(s->s3->server_random[0]),
1982 EVP_DigestUpdate(&md_ctx, param, param_len);
1983 EVP_DigestFinal_ex(&md_ctx, q, &size);
1987 i = RSA_verify(NID_md5_sha1, md_buf, j, p, n, pkey->pkey.rsa);
1989 al = SSL_AD_DECRYPT_ERROR;
1990 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_RSA_DECRYPT);
1995 al = SSL_AD_DECRYPT_ERROR;
1996 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_SIGNATURE);
2002 EVP_VerifyInit_ex(&md_ctx, md, NULL);
2003 EVP_VerifyUpdate(&md_ctx, &(s->s3->client_random[0]),
2005 EVP_VerifyUpdate(&md_ctx, &(s->s3->server_random[0]),
2007 EVP_VerifyUpdate(&md_ctx, param, param_len);
2008 if (EVP_VerifyFinal(&md_ctx, p, (int)n, pkey) <= 0) {
2010 al = SSL_AD_DECRYPT_ERROR;
2011 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_BAD_SIGNATURE);
2016 /* aNULL, aSRP or kPSK do not need public keys */
2017 if (!(alg_a & (SSL_aNULL | SSL_aSRP)) && !(alg_k & SSL_kPSK)) {
2018 /* Might be wrong key type, check it */
2019 if (ssl3_check_cert_and_algorithm(s))
2020 /* Otherwise this shouldn't happen */
2021 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2024 /* still data left over */
2026 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_EXTRA_DATA_IN_MESSAGE);
2030 EVP_PKEY_free(pkey);
2031 EVP_MD_CTX_cleanup(&md_ctx);
2034 ssl3_send_alert(s, SSL3_AL_FATAL, al);
2036 EVP_PKEY_free(pkey);
2037 #ifndef OPENSSL_NO_RSA
2040 #ifndef OPENSSL_NO_DH
2043 #ifndef OPENSSL_NO_EC
2044 BN_CTX_free(bn_ctx);
2045 EC_POINT_free(srvr_ecpoint);
2048 EVP_MD_CTX_cleanup(&md_ctx);
2049 s->state = SSL_ST_ERR;
2053 int ssl3_get_certificate_request(SSL *s)
2056 unsigned long n, nc, l;
2057 unsigned int llen, ctype_num, i;
2058 X509_NAME *xn = NULL;
2059 const unsigned char *p, *q;
2061 STACK_OF(X509_NAME) *ca_sk = NULL;
2063 n = s->method->ssl_get_message(s,
2064 SSL3_ST_CR_CERT_REQ_A,
2065 SSL3_ST_CR_CERT_REQ_B,
2066 -1, s->max_cert_list, &ok);
2071 s->s3->tmp.cert_req = 0;
2073 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE) {
2074 s->s3->tmp.reuse_message = 1;
2076 * If we get here we don't need any cached handshake records as we
2077 * wont be doing client auth.
2079 if (s->s3->handshake_buffer) {
2080 if (!ssl3_digest_cached_records(s))
2086 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST) {
2087 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
2088 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST, SSL_R_WRONG_MESSAGE_TYPE);
2092 /* TLS does not like anon-DH with client cert */
2093 if (s->version > SSL3_VERSION) {
2094 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) {
2095 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
2096 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,
2097 SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
2102 p = d = (unsigned char *)s->init_msg;
2104 if ((ca_sk = sk_X509_NAME_new(ca_dn_cmp)) == NULL) {
2105 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST, ERR_R_MALLOC_FAILURE);
2109 /* get the certificate types */
2111 OPENSSL_free(s->cert->ctypes);
2112 s->cert->ctypes = NULL;
2113 if (ctype_num > SSL3_CT_NUMBER) {
2114 /* If we exceed static buffer copy all to cert structure */
2115 s->cert->ctypes = OPENSSL_malloc(ctype_num);
2116 if (s->cert->ctypes == NULL) {
2117 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST, ERR_R_MALLOC_FAILURE);
2120 memcpy(s->cert->ctypes, p, ctype_num);
2121 s->cert->ctype_num = (size_t)ctype_num;
2122 ctype_num = SSL3_CT_NUMBER;
2124 for (i = 0; i < ctype_num; i++)
2125 s->s3->tmp.ctype[i] = p[i];
2127 if (SSL_USE_SIGALGS(s)) {
2130 * Check we have enough room for signature algorithms and following
2133 if ((unsigned long)(p - d + llen + 2) > n) {
2134 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
2135 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,
2136 SSL_R_DATA_LENGTH_TOO_LONG);
2139 /* Clear certificate digests and validity flags */
2140 for (i = 0; i < SSL_PKEY_NUM; i++) {
2141 s->s3->tmp.md[i] = NULL;
2142 s->s3->tmp.valid_flags[i] = 0;
2144 if ((llen & 1) || !tls1_save_sigalgs(s, p, llen)) {
2145 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
2146 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,
2147 SSL_R_SIGNATURE_ALGORITHMS_ERROR);
2150 if (!tls1_process_sigalgs(s)) {
2151 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
2152 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST, ERR_R_MALLOC_FAILURE);
2158 /* get the CA RDNs */
2161 if ((unsigned long)(p - d + llen) != n) {
2162 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
2163 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST, SSL_R_LENGTH_MISMATCH);
2167 for (nc = 0; nc < llen;) {
2169 if ((l + nc + 2) > llen) {
2170 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
2171 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST, SSL_R_CA_DN_TOO_LONG);
2177 if ((xn = d2i_X509_NAME(NULL, &q, l)) == NULL) {
2178 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
2179 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST, ERR_R_ASN1_LIB);
2184 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
2185 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,
2186 SSL_R_CA_DN_LENGTH_MISMATCH);
2189 if (!sk_X509_NAME_push(ca_sk, xn)) {
2190 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST, ERR_R_MALLOC_FAILURE);
2198 /* we should setup a certificate to return.... */
2199 s->s3->tmp.cert_req = 1;
2200 s->s3->tmp.ctype_num = ctype_num;
2201 sk_X509_NAME_pop_free(s->s3->tmp.ca_names, X509_NAME_free);
2202 s->s3->tmp.ca_names = ca_sk;
2208 s->state = SSL_ST_ERR;
2210 sk_X509_NAME_pop_free(ca_sk, X509_NAME_free);
2214 static int ca_dn_cmp(const X509_NAME *const *a, const X509_NAME *const *b)
2216 return (X509_NAME_cmp(*a, *b));
2219 int ssl3_get_new_session_ticket(SSL *s)
2221 int ok, al, ret = 0, ticklen;
2223 const unsigned char *p;
2226 n = s->method->ssl_get_message(s,
2227 SSL3_ST_CR_SESSION_TICKET_A,
2228 SSL3_ST_CR_SESSION_TICKET_B,
2229 SSL3_MT_NEWSESSION_TICKET, 16384, &ok);
2235 /* need at least ticket_lifetime_hint + ticket length */
2236 al = SSL_AD_DECODE_ERROR;
2237 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET, SSL_R_LENGTH_MISMATCH);
2241 p = d = (unsigned char *)s->init_msg;
2242 n2l(p, s->session->tlsext_tick_lifetime_hint);
2244 /* ticket_lifetime_hint + ticket_length + ticket */
2245 if (ticklen + 6 != n) {
2246 al = SSL_AD_DECODE_ERROR;
2247 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET, SSL_R_LENGTH_MISMATCH);
2250 OPENSSL_free(s->session->tlsext_tick);
2251 s->session->tlsext_ticklen = 0;
2252 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2253 if (!s->session->tlsext_tick) {
2254 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET, ERR_R_MALLOC_FAILURE);
2257 memcpy(s->session->tlsext_tick, p, ticklen);
2258 s->session->tlsext_ticklen = ticklen;
2260 * There are two ways to detect a resumed ticket session. One is to set
2261 * an appropriate session ID and then the server must return a match in
2262 * ServerHello. This allows the normal client session ID matching to work
2263 * and we know much earlier that the ticket has been accepted. The
2264 * other way is to set zero length session ID when the ticket is
2265 * presented and rely on the handshake to determine session resumption.
2266 * We choose the former approach because this fits in with assumptions
2267 * elsewhere in OpenSSL. The session ID is set to the SHA256 (or SHA1 is
2268 * SHA256 is disabled) hash of the ticket.
2270 EVP_Digest(p, ticklen,
2271 s->session->session_id, &s->session->session_id_length,
2272 EVP_sha256(), NULL);
2276 ssl3_send_alert(s, SSL3_AL_FATAL, al);
2278 s->state = SSL_ST_ERR;
2282 int ssl3_get_cert_status(SSL *s)
2285 unsigned long resplen, n;
2286 const unsigned char *p;
2288 n = s->method->ssl_get_message(s,
2289 SSL3_ST_CR_CERT_STATUS_A,
2290 SSL3_ST_CR_CERT_STATUS_B,
2291 SSL3_MT_CERTIFICATE_STATUS, 16384, &ok);
2296 /* need at least status type + length */
2297 al = SSL_AD_DECODE_ERROR;
2298 SSLerr(SSL_F_SSL3_GET_CERT_STATUS, SSL_R_LENGTH_MISMATCH);
2301 p = (unsigned char *)s->init_msg;
2302 if (*p++ != TLSEXT_STATUSTYPE_ocsp) {
2303 al = SSL_AD_DECODE_ERROR;
2304 SSLerr(SSL_F_SSL3_GET_CERT_STATUS, SSL_R_UNSUPPORTED_STATUS_TYPE);
2308 if (resplen + 4 != n) {
2309 al = SSL_AD_DECODE_ERROR;
2310 SSLerr(SSL_F_SSL3_GET_CERT_STATUS, SSL_R_LENGTH_MISMATCH);
2313 OPENSSL_free(s->tlsext_ocsp_resp);
2314 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2315 if (!s->tlsext_ocsp_resp) {
2316 al = SSL_AD_INTERNAL_ERROR;
2317 SSLerr(SSL_F_SSL3_GET_CERT_STATUS, ERR_R_MALLOC_FAILURE);
2320 s->tlsext_ocsp_resplen = resplen;
2321 if (s->ctx->tlsext_status_cb) {
2323 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2325 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2326 SSLerr(SSL_F_SSL3_GET_CERT_STATUS, SSL_R_INVALID_STATUS_RESPONSE);
2330 al = SSL_AD_INTERNAL_ERROR;
2331 SSLerr(SSL_F_SSL3_GET_CERT_STATUS, ERR_R_MALLOC_FAILURE);
2337 ssl3_send_alert(s, SSL3_AL_FATAL, al);
2338 s->state = SSL_ST_ERR;
2342 int ssl3_get_server_done(SSL *s)
2347 /* Second to last param should be very small, like 0 :-) */
2348 n = s->method->ssl_get_message(s,
2349 SSL3_ST_CR_SRVR_DONE_A,
2350 SSL3_ST_CR_SRVR_DONE_B,
2351 SSL3_MT_SERVER_DONE, 30, &ok);
2356 /* should contain no data */
2357 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
2358 SSLerr(SSL_F_SSL3_GET_SERVER_DONE, SSL_R_LENGTH_MISMATCH);
2359 s->state = SSL_ST_ERR;
2366 int ssl3_send_client_key_exchange(SSL *s)
2370 unsigned long alg_k;
2371 #ifndef OPENSSL_NO_RSA
2373 EVP_PKEY *pkey = NULL;
2375 #ifndef OPENSSL_NO_EC
2376 EC_KEY *clnt_ecdh = NULL;
2377 const EC_POINT *srvr_ecpoint = NULL;
2378 EVP_PKEY *srvr_pub_pkey = NULL;
2379 unsigned char *encodedPoint = NULL;
2380 int encoded_pt_len = 0;
2381 BN_CTX *bn_ctx = NULL;
2383 unsigned char *pms = NULL;
2386 if (s->state == SSL3_ST_CW_KEY_EXCH_A) {
2387 p = ssl_handshake_start(s);
2389 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
2391 /* Fool emacs indentation */
2394 #ifndef OPENSSL_NO_RSA
2395 else if (alg_k & SSL_kRSA) {
2397 pmslen = SSL_MAX_MASTER_KEY_LENGTH;
2398 pms = OPENSSL_malloc(pmslen);
2402 if (s->session->sess_cert == NULL) {
2404 * We should always have a server certificate with SSL_kRSA.
2406 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2407 ERR_R_INTERNAL_ERROR);
2411 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2412 rsa = s->session->sess_cert->peer_rsa_tmp;
2415 X509_get_pubkey(s->session->
2416 sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].
2418 if ((pkey == NULL) || (pkey->type != EVP_PKEY_RSA)
2419 || (pkey->pkey.rsa == NULL)) {
2420 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2421 ERR_R_INTERNAL_ERROR);
2424 rsa = pkey->pkey.rsa;
2425 EVP_PKEY_free(pkey);
2428 pms[0] = s->client_version >> 8;
2429 pms[1] = s->client_version & 0xff;
2430 if (RAND_bytes(pms + 2, pmslen - 2) <= 0)
2434 /* Fix buf for TLS and beyond */
2435 if (s->version > SSL3_VERSION)
2437 n = RSA_public_encrypt(pmslen, pms, p, rsa, RSA_PKCS1_PADDING);
2439 if (s->options & SSL_OP_PKCS1_CHECK_1)
2441 if (s->options & SSL_OP_PKCS1_CHECK_2)
2445 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2446 SSL_R_BAD_RSA_ENCRYPT);
2450 /* Fix buf for TLS and beyond */
2451 if (s->version > SSL3_VERSION) {
2457 #ifndef OPENSSL_NO_DH
2458 else if (alg_k & (SSL_kDHE | SSL_kDHr | SSL_kDHd)) {
2459 DH *dh_srvr, *dh_clnt;
2460 SESS_CERT *scert = s->session->sess_cert;
2462 if (scert == NULL) {
2463 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
2464 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2465 SSL_R_UNEXPECTED_MESSAGE);
2469 if (scert->peer_dh_tmp != NULL)
2470 dh_srvr = scert->peer_dh_tmp;
2472 /* we get them from the cert */
2473 int idx = scert->peer_cert_type;
2474 EVP_PKEY *spkey = NULL;
2477 spkey = X509_get_pubkey(scert->peer_pkeys[idx].x509);
2479 dh_srvr = EVP_PKEY_get1_DH(spkey);
2480 EVP_PKEY_free(spkey);
2482 if (dh_srvr == NULL) {
2483 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2484 ERR_R_INTERNAL_ERROR);
2488 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY) {
2489 /* Use client certificate key */
2490 EVP_PKEY *clkey = s->cert->key->privatekey;
2493 dh_clnt = EVP_PKEY_get1_DH(clkey);
2494 if (dh_clnt == NULL) {
2495 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2496 ERR_R_INTERNAL_ERROR);
2500 /* generate a new random key */
2501 if ((dh_clnt = DHparams_dup(dh_srvr)) == NULL) {
2502 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_DH_LIB);
2505 if (!DH_generate_key(dh_clnt)) {
2506 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_DH_LIB);
2512 pmslen = DH_size(dh_clnt);
2513 pms = OPENSSL_malloc(pmslen);
2518 * use the 'p' output buffer for the DH key, but make sure to
2519 * clear it out afterwards
2522 n = DH_compute_key(pms, dh_srvr->pub_key, dh_clnt);
2523 if (scert->peer_dh_tmp == NULL)
2527 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_DH_LIB);
2533 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
2536 /* send off the data */
2537 n = BN_num_bytes(dh_clnt->pub_key);
2539 BN_bn2bin(dh_clnt->pub_key, p);
2545 /* perhaps clean things up a bit EAY EAY EAY EAY */
2549 #ifndef OPENSSL_NO_EC
2550 else if (alg_k & (SSL_kECDHE | SSL_kECDHr | SSL_kECDHe)) {
2551 const EC_GROUP *srvr_group = NULL;
2553 int ecdh_clnt_cert = 0;
2556 if (s->session->sess_cert == NULL) {
2557 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
2558 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2559 SSL_R_UNEXPECTED_MESSAGE);
2564 * Did we send out the client's ECDH share for use in premaster
2565 * computation as part of client certificate? If so, set
2566 * ecdh_clnt_cert to 1.
2568 if ((alg_k & (SSL_kECDHr | SSL_kECDHe)) && (s->cert != NULL)) {
2570 * XXX: For now, we do not support client
2571 * authentication using ECDH certificates.
2572 * To add such support, one needs to add
2573 * code that checks for appropriate
2574 * conditions and sets ecdh_clnt_cert to 1.
2575 * For example, the cert have an ECC
2576 * key on the same curve as the server's
2577 * and the key should be authorized for
2580 * One also needs to add code in ssl3_connect
2581 * to skip sending the certificate verify
2584 * if ((s->cert->key->privatekey != NULL) &&
2585 * (s->cert->key->privatekey->type ==
2586 * EVP_PKEY_EC) && ...)
2587 * ecdh_clnt_cert = 1;
2591 if (s->session->sess_cert->peer_ecdh_tmp != NULL) {
2592 tkey = s->session->sess_cert->peer_ecdh_tmp;
2594 /* Get the Server Public Key from Cert */
2596 X509_get_pubkey(s->session->
2597 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2598 if ((srvr_pub_pkey == NULL)
2599 || (srvr_pub_pkey->type != EVP_PKEY_EC)
2600 || (srvr_pub_pkey->pkey.ec == NULL)) {
2601 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2602 ERR_R_INTERNAL_ERROR);
2606 tkey = srvr_pub_pkey->pkey.ec;
2609 srvr_group = EC_KEY_get0_group(tkey);
2610 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2612 if ((srvr_group == NULL) || (srvr_ecpoint == NULL)) {
2613 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2614 ERR_R_INTERNAL_ERROR);
2618 if ((clnt_ecdh = EC_KEY_new()) == NULL) {
2619 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2620 ERR_R_MALLOC_FAILURE);
2624 if (!EC_KEY_set_group(clnt_ecdh, srvr_group)) {
2625 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_EC_LIB);
2628 if (ecdh_clnt_cert) {
2630 * Reuse key info from our certificate We only need our
2631 * private key to perform the ECDH computation.
2633 const BIGNUM *priv_key;
2634 tkey = s->cert->key->privatekey->pkey.ec;
2635 priv_key = EC_KEY_get0_private_key(tkey);
2636 if (priv_key == NULL) {
2637 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2638 ERR_R_MALLOC_FAILURE);
2641 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key)) {
2642 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_EC_LIB);
2646 /* Generate a new ECDH key pair */
2647 if (!(EC_KEY_generate_key(clnt_ecdh))) {
2648 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2655 * use the 'p' output buffer for the ECDH key, but make sure to
2656 * clear it out afterwards
2659 field_size = EC_GROUP_get_degree(srvr_group);
2660 if (field_size <= 0) {
2661 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2664 pmslen = (field_size + 7) / 8;
2665 pms = OPENSSL_malloc(pmslen);
2668 n = ECDH_compute_key(pms, pmslen, srvr_ecpoint, clnt_ecdh, NULL);
2669 if (n <= 0 || pmslen != (size_t)n) {
2670 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2674 if (ecdh_clnt_cert) {
2675 /* Send empty client key exch message */
2679 * First check the size of encoding and allocate memory
2683 EC_POINT_point2oct(srvr_group,
2684 EC_KEY_get0_public_key(clnt_ecdh),
2685 POINT_CONVERSION_UNCOMPRESSED,
2688 encodedPoint = (unsigned char *)
2689 OPENSSL_malloc(encoded_pt_len * sizeof(unsigned char));
2690 bn_ctx = BN_CTX_new();
2691 if ((encodedPoint == NULL) || (bn_ctx == NULL)) {
2692 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2693 ERR_R_MALLOC_FAILURE);
2697 /* Encode the public key */
2698 n = EC_POINT_point2oct(srvr_group,
2699 EC_KEY_get0_public_key(clnt_ecdh),
2700 POINT_CONVERSION_UNCOMPRESSED,
2701 encodedPoint, encoded_pt_len, bn_ctx);
2703 *p = n; /* length of encoded point */
2704 /* Encoded point will be copied here */
2706 /* copy the point */
2707 memcpy(p, encodedPoint, n);
2708 /* increment n to account for length field */
2712 /* Free allocated memory */
2713 BN_CTX_free(bn_ctx);
2714 OPENSSL_free(encodedPoint);
2715 EC_KEY_free(clnt_ecdh);
2716 EVP_PKEY_free(srvr_pub_pkey);
2718 #endif /* !OPENSSL_NO_EC */
2719 else if (alg_k & SSL_kGOST) {
2720 /* GOST key exchange message creation */
2721 EVP_PKEY_CTX *pkey_ctx;
2724 unsigned int md_len;
2726 unsigned char shared_ukm[32], tmp[256];
2727 EVP_MD_CTX *ukm_hash;
2731 pms = OPENSSL_malloc(pmslen);
2736 * Get server sertificate PKEY and create ctx from it
2740 sess_cert->peer_pkeys[(keytype = SSL_PKEY_GOST01)].x509;
2744 sess_cert->peer_pkeys[(keytype = SSL_PKEY_GOST94)].x509;
2746 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2747 SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2751 pkey_ctx = EVP_PKEY_CTX_new(pub_key =
2752 X509_get_pubkey(peer_cert), NULL);
2754 * If we have send a certificate, and certificate key
2756 * * parameters match those of server certificate, use
2757 * certificate key for key exchange
2760 /* Otherwise, generate ephemeral key pair */
2762 EVP_PKEY_encrypt_init(pkey_ctx);
2763 /* Generate session key */
2764 if (RAND_bytes(pms, pmslen) <= 0) {
2765 EVP_PKEY_CTX_free(pkey_ctx);
2766 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2767 ERR_R_INTERNAL_ERROR);
2771 * If we have client certificate, use its secret as peer key
2773 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2774 if (EVP_PKEY_derive_set_peer
2775 (pkey_ctx, s->cert->key->privatekey) <= 0) {
2777 * If there was an error - just ignore it. Ephemeral key
2784 * Compute shared IV and store it in algorithm-specific context
2787 ukm_hash = EVP_MD_CTX_create();
2788 EVP_DigestInit(ukm_hash,
2789 EVP_get_digestbynid(NID_id_GostR3411_94));
2790 EVP_DigestUpdate(ukm_hash, s->s3->client_random,
2792 EVP_DigestUpdate(ukm_hash, s->s3->server_random,
2794 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2795 EVP_MD_CTX_destroy(ukm_hash);
2796 if (EVP_PKEY_CTX_ctrl
2797 (pkey_ctx, -1, EVP_PKEY_OP_ENCRYPT, EVP_PKEY_CTRL_SET_IV, 8,
2799 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2803 /* Make GOST keytransport blob message */
2805 * Encapsulate it into sequence
2807 *(p++) = V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2809 if (EVP_PKEY_encrypt(pkey_ctx, tmp, &msglen, pms, pmslen) < 0) {
2810 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2814 if (msglen >= 0x80) {
2816 *(p++) = msglen & 0xff;
2819 *(p++) = msglen & 0xff;
2822 memcpy(p, tmp, msglen);
2823 /* Check if pubkey from client certificate was used */
2824 if (EVP_PKEY_CTX_ctrl
2825 (pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0) {
2826 /* Set flag "skip certificate verify" */
2827 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2829 EVP_PKEY_CTX_free(pkey_ctx);
2830 EVP_PKEY_free(pub_key);
2833 #ifndef OPENSSL_NO_SRP
2834 else if (alg_k & SSL_kSRP) {
2835 if (s->srp_ctx.A != NULL) {
2836 /* send off the data */
2837 n = BN_num_bytes(s->srp_ctx.A);
2839 BN_bn2bin(s->srp_ctx.A, p);
2842 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2843 ERR_R_INTERNAL_ERROR);
2846 OPENSSL_free(s->session->srp_username);
2847 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2848 if (s->session->srp_username == NULL) {
2849 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2850 ERR_R_MALLOC_FAILURE);
2855 #ifndef OPENSSL_NO_PSK
2856 else if (alg_k & SSL_kPSK) {
2858 * The callback needs PSK_MAX_IDENTITY_LEN + 1 bytes to return a
2859 * \0-terminated identity. The last byte is for us for simulating
2862 char identity[PSK_MAX_IDENTITY_LEN + 2];
2863 size_t identity_len;
2864 unsigned char *t = NULL;
2865 unsigned int psk_len = 0;
2869 if (s->psk_client_callback == NULL) {
2870 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2871 SSL_R_PSK_NO_CLIENT_CB);
2875 memset(identity, 0, sizeof(identity));
2876 /* Allocate maximum size buffer */
2877 pmslen = PSK_MAX_PSK_LEN * 2 + 4;
2878 pms = OPENSSL_malloc(pmslen);
2882 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2883 identity, sizeof(identity) - 1,
2885 if (psk_len > PSK_MAX_PSK_LEN) {
2886 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2887 ERR_R_INTERNAL_ERROR);
2889 } else if (psk_len == 0) {
2890 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2891 SSL_R_PSK_IDENTITY_NOT_FOUND);
2894 /* Change pmslen to real length */
2895 pmslen = 2 + psk_len + 2 + psk_len;
2896 identity[PSK_MAX_IDENTITY_LEN + 1] = '\0';
2897 identity_len = strlen(identity);
2898 if (identity_len > PSK_MAX_IDENTITY_LEN) {
2899 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2900 ERR_R_INTERNAL_ERROR);
2903 /* create PSK pre_master_secret */
2905 memmove(pms + psk_len + 4, pms, psk_len);
2907 memset(t, 0, psk_len);
2911 OPENSSL_free(s->session->psk_identity_hint);
2912 s->session->psk_identity_hint =
2913 BUF_strdup(s->ctx->psk_identity_hint);
2914 if (s->ctx->psk_identity_hint != NULL
2915 && s->session->psk_identity_hint == NULL) {
2916 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2917 ERR_R_MALLOC_FAILURE);
2921 OPENSSL_free(s->session->psk_identity);
2922 s->session->psk_identity = BUF_strdup(identity);
2923 if (s->session->psk_identity == NULL) {
2924 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2925 ERR_R_MALLOC_FAILURE);
2929 s2n(identity_len, p);
2930 memcpy(p, identity, identity_len);
2931 n = 2 + identity_len;
2934 OPENSSL_cleanse(identity, sizeof(identity));
2936 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2942 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2943 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2947 if (!ssl_set_handshake_header(s, SSL3_MT_CLIENT_KEY_EXCHANGE, n)) {
2948 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2949 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2953 s->state = SSL3_ST_CW_KEY_EXCH_B;
2956 /* SSL3_ST_CW_KEY_EXCH_B */
2957 n = ssl_do_write(s);
2958 #ifndef OPENSSL_NO_SRP
2960 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP) {
2962 * If everything written generate master key: no need to save PMS as
2963 * SRP_generate_client_master_secret generates it internally.
2966 if ((s->session->master_key_length =
2967 SRP_generate_client_master_secret(s,
2968 s->session->master_key)) <
2970 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2971 ERR_R_INTERNAL_ERROR);
2977 /* If we haven't written everything save PMS */
2979 s->s3->tmp.pms = pms;
2980 s->s3->tmp.pmslen = pmslen;
2982 /* If we don't have a PMS restore */
2984 pms = s->s3->tmp.pms;
2985 pmslen = s->s3->tmp.pmslen;
2988 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
2989 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
2992 s->session->master_key_length =
2993 s->method->ssl3_enc->generate_master_secret(s,
2995 session->master_key,
2997 OPENSSL_clear_free(pms, pmslen);
2998 s->s3->tmp.pms = NULL;
2999 if (s->session->master_key_length < 0) {
3000 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
3001 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
3007 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
3008 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
3010 OPENSSL_clear_free(pms, pmslen);
3011 s->s3->tmp.pms = NULL;
3012 #ifndef OPENSSL_NO_EC
3013 BN_CTX_free(bn_ctx);
3014 OPENSSL_free(encodedPoint);
3015 EC_KEY_free(clnt_ecdh);
3016 EVP_PKEY_free(srvr_pub_pkey);
3018 s->state = SSL_ST_ERR;
3022 int ssl3_send_client_verify(SSL *s)
3025 unsigned char data[MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH];
3027 EVP_PKEY_CTX *pctx = NULL;
3033 EVP_MD_CTX_init(&mctx);
3035 if (s->state == SSL3_ST_CW_CERT_VRFY_A) {
3036 p = ssl_handshake_start(s);
3037 pkey = s->cert->key->privatekey;
3038 /* Create context from key and test if sha1 is allowed as digest */
3039 pctx = EVP_PKEY_CTX_new(pkey, NULL);
3040 EVP_PKEY_sign_init(pctx);
3041 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1()) > 0) {
3042 if (!SSL_USE_SIGALGS(s))
3043 s->method->ssl3_enc->cert_verify_mac(s,
3046 [MD5_DIGEST_LENGTH]));
3051 * For TLS v1.2 send signature algorithm and signature using agreed
3052 * digest and cached handshake records.
3054 if (SSL_USE_SIGALGS(s)) {
3057 const EVP_MD *md = s->s3->tmp.md[s->cert->key - s->cert->pkeys];
3058 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer, &hdata);
3059 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md)) {
3060 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, ERR_R_INTERNAL_ERROR);
3065 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
3068 if (!EVP_SignInit_ex(&mctx, md, NULL)
3069 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
3070 || !EVP_SignFinal(&mctx, p + 2, &u, pkey)) {
3071 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, ERR_R_EVP_LIB);
3077 * For extended master secret we've already digested cached
3080 if (s->session->flags & SSL_SESS_FLAG_EXTMS) {
3081 BIO_free(s->s3->handshake_buffer);
3082 s->s3->handshake_buffer = NULL;
3083 s->s3->flags &= ~TLS1_FLAGS_KEEP_HANDSHAKE;
3084 } else if (!ssl3_digest_cached_records(s))
3087 #ifndef OPENSSL_NO_RSA
3088 if (pkey->type == EVP_PKEY_RSA) {
3089 s->method->ssl3_enc->cert_verify_mac(s, NID_md5, &(data[0]));
3090 if (RSA_sign(NID_md5_sha1, data,
3091 MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH,
3092 &(p[2]), &u, pkey->pkey.rsa) <= 0) {
3093 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, ERR_R_RSA_LIB);
3100 #ifndef OPENSSL_NO_DSA
3101 if (pkey->type == EVP_PKEY_DSA) {
3102 if (!DSA_sign(pkey->save_type,
3103 &(data[MD5_DIGEST_LENGTH]),
3104 SHA_DIGEST_LENGTH, &(p[2]),
3105 (unsigned int *)&j, pkey->pkey.dsa)) {
3106 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, ERR_R_DSA_LIB);
3113 #ifndef OPENSSL_NO_EC
3114 if (pkey->type == EVP_PKEY_EC) {
3115 if (!ECDSA_sign(pkey->save_type,
3116 &(data[MD5_DIGEST_LENGTH]),
3117 SHA_DIGEST_LENGTH, &(p[2]),
3118 (unsigned int *)&j, pkey->pkey.ec)) {
3119 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, ERR_R_ECDSA_LIB);
3126 if (pkey->type == NID_id_GostR3410_94
3127 || pkey->type == NID_id_GostR3410_2001) {
3128 unsigned char signbuf[64];
3130 size_t sigsize = 64;
3131 s->method->ssl3_enc->cert_verify_mac(s,
3132 NID_id_GostR3411_94, data);
3133 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
3134 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, ERR_R_INTERNAL_ERROR);
3137 for (i = 63, j = 0; i >= 0; j++, i--) {
3138 p[2 + j] = signbuf[i];
3143 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, ERR_R_INTERNAL_ERROR);
3146 if (!ssl_set_handshake_header(s, SSL3_MT_CERTIFICATE_VERIFY, n)) {
3147 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, ERR_R_INTERNAL_ERROR);
3150 s->state = SSL3_ST_CW_CERT_VRFY_B;
3152 EVP_MD_CTX_cleanup(&mctx);
3153 EVP_PKEY_CTX_free(pctx);
3154 return ssl_do_write(s);
3156 EVP_MD_CTX_cleanup(&mctx);
3157 EVP_PKEY_CTX_free(pctx);
3158 s->state = SSL_ST_ERR;
3163 * Check a certificate can be used for client authentication. Currently check
3164 * cert exists, if we have a suitable digest for TLS 1.2 if static DH client
3165 * certificates can be used and optionally checks suitability for Suite B.
3167 static int ssl3_check_client_certificate(SSL *s)
3169 unsigned long alg_k;
3170 if (!s->cert || !s->cert->key->x509 || !s->cert->key->privatekey)
3172 /* If no suitable signature algorithm can't use certificate */
3173 if (SSL_USE_SIGALGS(s) && !s->s3->tmp.md[s->cert->key - s->cert->pkeys])
3176 * If strict mode check suitability of chain before using it. This also
3177 * adjusts suite B digest if necessary.
3179 if (s->cert->cert_flags & SSL_CERT_FLAGS_CHECK_TLS_STRICT &&
3180 !tls1_check_chain(s, NULL, NULL, NULL, -2))
3182 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
3183 /* See if we can use client certificate for fixed DH */
3184 if (alg_k & (SSL_kDHr | SSL_kDHd)) {
3185 SESS_CERT *scert = s->session->sess_cert;
3186 int i = scert->peer_cert_type;
3187 EVP_PKEY *clkey = NULL, *spkey = NULL;
3188 clkey = s->cert->key->privatekey;
3189 /* If client key not DH assume it can be used */
3190 if (EVP_PKEY_id(clkey) != EVP_PKEY_DH)
3193 spkey = X509_get_pubkey(scert->peer_pkeys[i].x509);
3195 /* Compare server and client parameters */
3196 i = EVP_PKEY_cmp_parameters(clkey, spkey);
3197 EVP_PKEY_free(spkey);
3201 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
3206 int ssl3_send_client_certificate(SSL *s)
3209 EVP_PKEY *pkey = NULL;
3212 if (s->state == SSL3_ST_CW_CERT_A) {
3213 /* Let cert callback update client certificates if required */
3214 if (s->cert->cert_cb) {
3215 i = s->cert->cert_cb(s, s->cert->cert_cb_arg);
3217 s->rwstate = SSL_X509_LOOKUP;
3221 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
3222 s->state = SSL_ST_ERR;
3225 s->rwstate = SSL_NOTHING;
3227 if (ssl3_check_client_certificate(s))
3228 s->state = SSL3_ST_CW_CERT_C;
3230 s->state = SSL3_ST_CW_CERT_B;
3233 /* We need to get a client cert */
3234 if (s->state == SSL3_ST_CW_CERT_B) {
3236 * If we get an error, we need to ssl->rwstate=SSL_X509_LOOKUP;
3237 * return(-1); We then get retied later
3240 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3242 s->rwstate = SSL_X509_LOOKUP;
3245 s->rwstate = SSL_NOTHING;
3246 if ((i == 1) && (pkey != NULL) && (x509 != NULL)) {
3247 s->state = SSL3_ST_CW_CERT_B;
3248 if (!SSL_use_certificate(s, x509) || !SSL_use_PrivateKey(s, pkey))
3250 } else if (i == 1) {
3252 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,
3253 SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3257 EVP_PKEY_free(pkey);
3258 if (i && !ssl3_check_client_certificate(s))
3261 if (s->version == SSL3_VERSION) {
3262 s->s3->tmp.cert_req = 0;
3263 ssl3_send_alert(s, SSL3_AL_WARNING, SSL_AD_NO_CERTIFICATE);
3266 s->s3->tmp.cert_req = 2;
3267 if (s->s3->handshake_buffer && !ssl3_digest_cached_records(s)) {
3268 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
3269 s->state = SSL_ST_ERR;
3275 /* Ok, we have a cert */
3276 s->state = SSL3_ST_CW_CERT_C;
3279 if (s->state == SSL3_ST_CW_CERT_C) {
3280 s->state = SSL3_ST_CW_CERT_D;
3281 if (!ssl3_output_cert_chain(s,
3282 (s->s3->tmp.cert_req ==
3283 2) ? NULL : s->cert->key)) {
3284 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE, ERR_R_INTERNAL_ERROR);
3285 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
3286 s->state = SSL_ST_ERR;
3290 /* SSL3_ST_CW_CERT_D */
3291 return ssl_do_write(s);
3294 #define has_bits(i,m) (((i)&(m)) == (m))
3296 int ssl3_check_cert_and_algorithm(SSL *s)
3300 EVP_PKEY *pkey = NULL;
3303 #ifndef OPENSSL_NO_RSA
3306 #ifndef OPENSSL_NO_DH
3310 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
3311 alg_a = s->s3->tmp.new_cipher->algorithm_auth;
3313 /* we don't have a certificate */
3314 if ((alg_a & SSL_aNULL) || (alg_k & SSL_kPSK))
3317 sc = s->session->sess_cert;
3319 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, ERR_R_INTERNAL_ERROR);
3322 #ifndef OPENSSL_NO_RSA
3323 rsa = s->session->sess_cert->peer_rsa_tmp;
3325 #ifndef OPENSSL_NO_DH
3326 dh = s->session->sess_cert->peer_dh_tmp;
3329 /* This is the passed certificate */
3331 idx = sc->peer_cert_type;
3332 #ifndef OPENSSL_NO_EC
3333 if (idx == SSL_PKEY_ECC) {
3334 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509, s) == 0) {
3336 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, SSL_R_BAD_ECC_CERT);
3341 } else if (alg_a & SSL_aECDSA) {
3342 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,
3343 SSL_R_MISSING_ECDSA_SIGNING_CERT);
3345 } else if (alg_k & (SSL_kECDHr | SSL_kECDHe)) {
3346 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, SSL_R_MISSING_ECDH_CERT);
3350 pkey = X509_get_pubkey(sc->peer_pkeys[idx].x509);
3351 pkey_bits = EVP_PKEY_bits(pkey);
3352 i = X509_certificate_type(sc->peer_pkeys[idx].x509, pkey);
3353 EVP_PKEY_free(pkey);
3355 /* Check that we have a certificate if we require one */
3356 if ((alg_a & SSL_aRSA) && !has_bits(i, EVP_PK_RSA | EVP_PKT_SIGN)) {
3357 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,
3358 SSL_R_MISSING_RSA_SIGNING_CERT);
3361 #ifndef OPENSSL_NO_DSA
3362 else if ((alg_a & SSL_aDSS) && !has_bits(i, EVP_PK_DSA | EVP_PKT_SIGN)) {
3363 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,
3364 SSL_R_MISSING_DSA_SIGNING_CERT);
3368 #ifndef OPENSSL_NO_RSA
3369 if ((alg_k & SSL_kRSA) &&
3370 !(has_bits(i, EVP_PK_RSA | EVP_PKT_ENC) || (rsa != NULL))) {
3371 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,
3372 SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3376 #ifndef OPENSSL_NO_DH
3377 if ((alg_k & SSL_kDHE) &&
3378 !(has_bits(i, EVP_PK_DH | EVP_PKT_EXCH) || (dh != NULL))) {
3379 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, SSL_R_MISSING_DH_KEY);
3381 } else if ((alg_k & SSL_kDHr) && !SSL_USE_SIGALGS(s) &&
3382 !has_bits(i, EVP_PK_DH | EVP_PKS_RSA)) {
3383 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,
3384 SSL_R_MISSING_DH_RSA_CERT);
3387 # ifndef OPENSSL_NO_DSA
3388 else if ((alg_k & SSL_kDHd) && !SSL_USE_SIGALGS(s) &&
3389 !has_bits(i, EVP_PK_DH | EVP_PKS_DSA)) {
3390 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,
3391 SSL_R_MISSING_DH_DSA_CERT);
3397 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
3398 pkey_bits > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) {
3399 #ifndef OPENSSL_NO_RSA
3400 if (alg_k & SSL_kRSA) {
3402 || RSA_size(rsa) * 8 >
3403 SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) {
3404 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,
3405 SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3410 #ifndef OPENSSL_NO_DH
3411 if (alg_k & (SSL_kDHE | SSL_kDHr | SSL_kDHd)) {
3413 || DH_size(dh) * 8 >
3414 SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) {
3415 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,
3416 SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3422 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,
3423 SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3429 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
3435 * Normally, we can tell if the server is resuming the session from
3436 * the session ID. EAP-FAST (RFC 4851), however, relies on the next server
3437 * message after the ServerHello to determine if the server is resuming.
3438 * Therefore, we allow EAP-FAST to peek ahead.
3439 * ssl3_check_finished returns 1 if we are resuming from an external
3440 * pre-shared secret, we have a "ticket" and the next server handshake message
3441 * is Finished; and 0 otherwise. It returns -1 upon an error.
3443 static int ssl3_check_finished(SSL *s)
3447 if (s->version < TLS1_VERSION || !s->tls_session_secret_cb ||
3448 !s->session->tlsext_tick)
3451 /* Need to permit this temporarily, in case the next message is Finished. */
3452 s->s3->flags |= SSL3_FLAGS_CCS_OK;
3454 * This function is called when we might get a Certificate message instead,
3455 * so permit appropriate message length.
3456 * We ignore the return value as we're only interested in the message type
3457 * and not its length.
3459 s->method->ssl_get_message(s,
3462 -1, s->max_cert_list, &ok);
3463 s->s3->flags &= ~SSL3_FLAGS_CCS_OK;
3468 s->s3->tmp.reuse_message = 1;
3470 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
3473 /* If we're not done, then the CCS arrived early and we should bail. */
3474 if (s->s3->change_cipher_spec) {
3475 SSLerr(SSL_F_SSL3_CHECK_FINISHED, SSL_R_CCS_RECEIVED_EARLY);
3476 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE);
3483 #ifndef OPENSSL_NO_NEXTPROTONEG
3484 int ssl3_send_next_proto(SSL *s)
3486 unsigned int len, padding_len;
3489 if (s->state == SSL3_ST_CW_NEXT_PROTO_A) {
3490 len = s->next_proto_negotiated_len;
3491 padding_len = 32 - ((len + 2) % 32);
3492 d = (unsigned char *)s->init_buf->data;
3494 memcpy(d + 5, s->next_proto_negotiated, len);
3495 d[5 + len] = padding_len;
3496 memset(d + 6 + len, 0, padding_len);
3497 *(d++) = SSL3_MT_NEXT_PROTO;
3498 l2n3(2 + len + padding_len, d);
3499 s->state = SSL3_ST_CW_NEXT_PROTO_B;
3500 s->init_num = 4 + 2 + len + padding_len;
3504 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3508 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3511 #ifndef OPENSSL_NO_ENGINE
3512 if (s->ctx->client_cert_engine) {
3513 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3514 SSL_get_client_CA_list(s),
3515 px509, ppkey, NULL, NULL, NULL);
3520 if (s->ctx->client_cert_cb)
3521 i = s->ctx->client_cert_cb(s, px509, ppkey);
3525 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
3527 int (*put_cb) (const SSL_CIPHER *,
3533 int empty_reneg_info_scsv = !s->renegotiate;
3534 /* Set disabled masks for this session */
3535 ssl_set_client_disabled(s);
3541 put_cb = s->method->put_cipher_by_char;
3543 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
3544 c = sk_SSL_CIPHER_value(sk, i);
3545 /* Skip disabled ciphers */
3546 if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
3548 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
3549 if (c->id == SSL3_CK_SCSV) {
3550 if (!empty_reneg_info_scsv)
3553 empty_reneg_info_scsv = 0;
3560 * If p == q, no ciphers; caller indicates an error. Otherwise, add
3564 if (empty_reneg_info_scsv) {
3565 static SSL_CIPHER scsv = {
3566 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
3568 j = put_cb(&scsv, p);
3570 #ifdef OPENSSL_RI_DEBUG
3572 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
3575 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
3576 static SSL_CIPHER scsv = {
3577 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
3579 j = put_cb(&scsv, p);