2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
114 * Portions of the attached software ("Contribution") are developed by
115 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
117 * The Contribution is licensed pursuant to the OpenSSL open source
118 * license provided above.
120 * ECC cipher suite support in OpenSSL originally written by
121 * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
124 /* ====================================================================
125 * Copyright 2005 Nokia. All rights reserved.
127 * The portions of the attached software ("Contribution") is developed by
128 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
131 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
132 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
133 * support (see RFC 4279) to OpenSSL.
135 * No patent licenses or other rights except those expressly stated in
136 * the OpenSSL open source license shall be deemed granted or received
137 * expressly, by implication, estoppel, or otherwise.
139 * No assurances are provided by Nokia that the Contribution does not
140 * infringe the patent or other intellectual property rights of any third
141 * party or that the license provides you with all the necessary rights
142 * to make use of the Contribution.
144 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
145 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
146 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
147 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
152 #include "ssl_locl.h"
153 #include "kssl_lcl.h"
154 #include <openssl/buffer.h>
155 #include <openssl/rand.h>
156 #include <openssl/objects.h>
157 #include <openssl/evp.h>
158 #include <openssl/md5.h>
160 #include <openssl/fips.h>
162 #ifndef OPENSSL_NO_DH
163 #include <openssl/dh.h>
165 #include <openssl/bn.h>
166 #ifndef OPENSSL_NO_ENGINE
167 #include <openssl/engine.h>
170 static const SSL_METHOD *ssl3_get_client_method(int ver);
171 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
173 static const SSL_METHOD *ssl3_get_client_method(int ver)
175 if (ver == SSL3_VERSION)
176 return(SSLv3_client_method());
181 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
182 ssl_undefined_function,
184 ssl3_get_client_method)
186 int ssl3_connect(SSL *s)
189 unsigned long Time=(unsigned long)time(NULL);
190 void (*cb)(const SSL *ssl,int type,int val)=NULL;
192 int new_state,state,skip=0;
194 RAND_add(&Time,sizeof(Time),0);
198 if (s->info_callback != NULL)
200 else if (s->ctx->info_callback != NULL)
201 cb=s->ctx->info_callback;
204 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
206 #ifndef OPENSSL_NO_HEARTBEATS
207 /* If we're awaiting a HeartbeatResponse, pretend we
208 * already got and don't await it anymore, because
209 * Heartbeats don't make sense during handshakes anyway.
211 if (s->tlsext_hb_pending)
213 s->tlsext_hb_pending = 0;
224 case SSL_ST_RENEGOTIATE:
226 s->state=SSL_ST_CONNECT;
227 s->ctx->stats.sess_connect_renegotiate++;
231 case SSL_ST_BEFORE|SSL_ST_CONNECT:
232 case SSL_ST_OK|SSL_ST_CONNECT:
235 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
237 if ((s->version & 0xff00 ) != 0x0300)
239 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
244 /* s->version=SSL3_VERSION; */
245 s->type=SSL_ST_CONNECT;
247 if (s->init_buf == NULL)
249 if ((buf=BUF_MEM_new()) == NULL)
254 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
263 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
265 /* setup buffing BIO */
266 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
268 /* don't push the buffering BIO quite yet */
270 ssl3_init_finished_mac(s);
272 s->state=SSL3_ST_CW_CLNT_HELLO_A;
273 s->ctx->stats.sess_connect++;
277 case SSL3_ST_CW_CLNT_HELLO_A:
278 case SSL3_ST_CW_CLNT_HELLO_B:
281 ret=ssl3_client_hello(s);
282 if (ret <= 0) goto end;
283 s->state=SSL3_ST_CR_SRVR_HELLO_A;
286 /* turn on buffering for the next lot of output */
287 if (s->bbio != s->wbio)
288 s->wbio=BIO_push(s->bbio,s->wbio);
292 case SSL3_ST_CR_SRVR_HELLO_A:
293 case SSL3_ST_CR_SRVR_HELLO_B:
294 ret=ssl3_get_server_hello(s);
295 if (ret <= 0) goto end;
299 s->state=SSL3_ST_CR_FINISHED_A;
300 #ifndef OPENSSL_NO_TLSEXT
301 if (s->tlsext_ticket_expected)
303 /* receive renewed session ticket */
304 s->state=SSL3_ST_CR_SESSION_TICKET_A;
310 #ifndef OPENSSL_NO_TLSEXT
311 /* The server hello indicated that
312 * an audit proof would follow. */
313 if (s->s3->tlsext_authz_server_promised)
314 s->state=SSL3_ST_CR_SUPPLEMENTAL_DATA_A;
317 s->state=SSL3_ST_CR_CERT_A;
321 #ifndef OPENSSL_NO_TLSEXT
322 case SSL3_ST_CR_SUPPLEMENTAL_DATA_A:
323 case SSL3_ST_CR_SUPPLEMENTAL_DATA_B:
324 ret = tls1_get_server_supplemental_data(s);
325 if (ret <= 0) goto end;
326 s->state=SSL3_ST_CR_CERT_A;
330 case SSL3_ST_CR_CERT_A:
331 case SSL3_ST_CR_CERT_B:
332 #ifndef OPENSSL_NO_TLSEXT
333 ret=ssl3_check_finished(s);
334 if (ret <= 0) goto end;
338 if (s->tlsext_ticket_expected)
339 s->state=SSL3_ST_CR_SESSION_TICKET_A;
341 s->state=SSL3_ST_CR_FINISHED_A;
346 /* Check if it is anon DH/ECDH */
348 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
349 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
351 ret=ssl3_get_server_certificate(s);
352 if (ret <= 0) goto end;
353 #ifndef OPENSSL_NO_TLSEXT
354 if (s->tlsext_status_expected)
355 s->state=SSL3_ST_CR_CERT_STATUS_A;
357 s->state=SSL3_ST_CR_KEY_EXCH_A;
362 s->state=SSL3_ST_CR_KEY_EXCH_A;
369 s->state=SSL3_ST_CR_KEY_EXCH_A;
374 case SSL3_ST_CR_KEY_EXCH_A:
375 case SSL3_ST_CR_KEY_EXCH_B:
376 ret=ssl3_get_key_exchange(s);
377 if (ret <= 0) goto end;
378 s->state=SSL3_ST_CR_CERT_REQ_A;
381 /* at this point we check that we have the
382 * required stuff from the server */
383 if (!ssl3_check_cert_and_algorithm(s))
390 case SSL3_ST_CR_CERT_REQ_A:
391 case SSL3_ST_CR_CERT_REQ_B:
392 ret=ssl3_get_certificate_request(s);
393 if (ret <= 0) goto end;
394 s->state=SSL3_ST_CR_SRVR_DONE_A;
398 case SSL3_ST_CR_SRVR_DONE_A:
399 case SSL3_ST_CR_SRVR_DONE_B:
400 ret=ssl3_get_server_done(s);
401 if (ret <= 0) goto end;
402 #ifndef OPENSSL_NO_SRP
403 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP)
405 if ((ret = SRP_Calc_A_param(s))<=0)
407 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SRP_A_CALC);
408 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
413 if (s->s3->tmp.cert_req)
414 s->state=SSL3_ST_CW_CERT_A;
416 s->state=SSL3_ST_CW_KEY_EXCH_A;
421 case SSL3_ST_CW_CERT_A:
422 case SSL3_ST_CW_CERT_B:
423 case SSL3_ST_CW_CERT_C:
424 case SSL3_ST_CW_CERT_D:
425 ret=ssl3_send_client_certificate(s);
426 if (ret <= 0) goto end;
427 s->state=SSL3_ST_CW_KEY_EXCH_A;
431 case SSL3_ST_CW_KEY_EXCH_A:
432 case SSL3_ST_CW_KEY_EXCH_B:
433 ret=ssl3_send_client_key_exchange(s);
434 if (ret <= 0) goto end;
435 /* EAY EAY EAY need to check for DH fix cert
437 /* For TLS, cert_req is set to 2, so a cert chain
438 * of nothing is sent, but no verify packet is sent */
439 /* XXX: For now, we do not support client
440 * authentication in ECDH cipher suites with
441 * ECDH (rather than ECDSA) certificates.
442 * We need to skip the certificate verify
443 * message when client's ECDH public key is sent
444 * inside the client certificate.
446 if (s->s3->tmp.cert_req == 1)
448 s->state=SSL3_ST_CW_CERT_VRFY_A;
452 s->state=SSL3_ST_CW_CHANGE_A;
453 s->s3->change_cipher_spec=0;
455 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
457 s->state=SSL3_ST_CW_CHANGE_A;
458 s->s3->change_cipher_spec=0;
464 case SSL3_ST_CW_CERT_VRFY_A:
465 case SSL3_ST_CW_CERT_VRFY_B:
466 ret=ssl3_send_client_verify(s);
467 if (ret <= 0) goto end;
468 s->state=SSL3_ST_CW_CHANGE_A;
470 s->s3->change_cipher_spec=0;
473 case SSL3_ST_CW_CHANGE_A:
474 case SSL3_ST_CW_CHANGE_B:
475 ret=ssl3_send_change_cipher_spec(s,
476 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
477 if (ret <= 0) goto end;
479 #if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
480 s->state=SSL3_ST_CW_FINISHED_A;
482 if (s->s3->next_proto_neg_seen)
483 s->state=SSL3_ST_CW_NEXT_PROTO_A;
485 s->state=SSL3_ST_CW_FINISHED_A;
489 s->session->cipher=s->s3->tmp.new_cipher;
490 #ifdef OPENSSL_NO_COMP
491 s->session->compress_meth=0;
493 if (s->s3->tmp.new_compression == NULL)
494 s->session->compress_meth=0;
496 s->session->compress_meth=
497 s->s3->tmp.new_compression->id;
499 if (!s->method->ssl3_enc->setup_key_block(s))
505 if (!s->method->ssl3_enc->change_cipher_state(s,
506 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
514 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
515 case SSL3_ST_CW_NEXT_PROTO_A:
516 case SSL3_ST_CW_NEXT_PROTO_B:
517 ret=ssl3_send_next_proto(s);
518 if (ret <= 0) goto end;
519 s->state=SSL3_ST_CW_FINISHED_A;
523 case SSL3_ST_CW_FINISHED_A:
524 case SSL3_ST_CW_FINISHED_B:
525 ret=ssl3_send_finished(s,
526 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
527 s->method->ssl3_enc->client_finished_label,
528 s->method->ssl3_enc->client_finished_label_len);
529 if (ret <= 0) goto end;
530 s->state=SSL3_ST_CW_FLUSH;
533 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
536 s->s3->tmp.next_state=SSL_ST_OK;
537 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
540 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
541 s->s3->delay_buf_pop_ret=0;
546 #ifndef OPENSSL_NO_TLSEXT
547 /* Allow NewSessionTicket if ticket expected */
548 if (s->tlsext_ticket_expected)
549 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
553 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
558 #ifndef OPENSSL_NO_TLSEXT
559 case SSL3_ST_CR_SESSION_TICKET_A:
560 case SSL3_ST_CR_SESSION_TICKET_B:
561 ret=ssl3_get_new_session_ticket(s);
562 if (ret <= 0) goto end;
563 s->state=SSL3_ST_CR_FINISHED_A;
567 case SSL3_ST_CR_CERT_STATUS_A:
568 case SSL3_ST_CR_CERT_STATUS_B:
569 ret=ssl3_get_cert_status(s);
570 if (ret <= 0) goto end;
571 s->state=SSL3_ST_CR_KEY_EXCH_A;
576 case SSL3_ST_CR_FINISHED_A:
577 case SSL3_ST_CR_FINISHED_B:
579 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
580 SSL3_ST_CR_FINISHED_B);
581 if (ret <= 0) goto end;
584 s->state=SSL3_ST_CW_CHANGE_A;
590 case SSL3_ST_CW_FLUSH:
591 s->rwstate=SSL_WRITING;
592 if (BIO_flush(s->wbio) <= 0)
597 s->rwstate=SSL_NOTHING;
598 s->state=s->s3->tmp.next_state;
602 /* clean a few things up */
603 ssl3_cleanup_key_block(s);
605 if (s->init_buf != NULL)
607 BUF_MEM_free(s->init_buf);
611 /* If we are not 'joining' the last two packets,
612 * remove the buffering now */
613 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
614 ssl_free_wbio_buffer(s);
615 /* else do it later in ssl3_write */
621 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
622 if (s->hit) s->ctx->stats.sess_hit++;
626 s->handshake_func=ssl3_connect;
627 s->ctx->stats.sess_connect_good++;
629 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
635 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
641 /* did we do anything */
642 if (!s->s3->tmp.reuse_message && !skip)
646 if ((ret=BIO_flush(s->wbio)) <= 0)
650 if ((cb != NULL) && (s->state != state))
654 cb(s,SSL_CB_CONNECT_LOOP,1);
665 cb(s,SSL_CB_CONNECT_EXIT,ret);
670 int ssl3_client_hello(SSL *s)
676 #ifndef OPENSSL_NO_COMP
681 buf=(unsigned char *)s->init_buf->data;
682 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
684 SSL_SESSION *sess = s->session;
685 if ((sess == NULL) ||
686 (sess->ssl_version != s->version) ||
687 #ifdef OPENSSL_NO_TLSEXT
688 !sess->session_id_length ||
690 (!sess->session_id_length && !sess->tlsext_tick) ||
692 (sess->not_resumable))
694 if (!ssl_get_new_session(s,0))
697 if (s->method->version == DTLS_ANY_VERSION)
699 /* Determine which DTLS version to use */
700 int options = s->options;
701 /* If DTLS 1.2 disabled correct the version number */
702 if (options & SSL_OP_NO_DTLSv1_2)
706 SSLerr(SSL_F_SSL3_CLIENT_HELLO, SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE);
709 /* Disabling all versions is silly: return an
712 if (options & SSL_OP_NO_DTLSv1)
714 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_WRONG_SSL_VERSION);
717 /* Update method so we don't use any DTLS 1.2
720 s->method = DTLSv1_client_method();
721 s->version = DTLS1_VERSION;
725 /* We only support one version: update method */
726 if (options & SSL_OP_NO_DTLSv1)
727 s->method = DTLSv1_2_client_method();
728 s->version = DTLS1_2_VERSION;
730 s->client_version = s->version;
732 /* else use the pre-loaded session */
734 p=s->s3->client_random;
736 /* for DTLS if client_random is initialized, reuse it, we are
737 * required to use same upon reply to HelloVerify */
742 for (idx=0; idx < sizeof(s->s3->client_random); idx++)
755 ssl_fill_hello_random(s, 0, p,
756 sizeof(s->s3->client_random));
758 /* Do the message type and length last */
759 d=p= ssl_handshake_start(s);
761 /* version indicates the negotiated version: for example from
762 * an SSLv2/v3 compatible client hello). The client_version
763 * field is the maximum version we permit and it is also
764 * used in RSA encrypted premaster secrets. Some servers can
765 * choke if we initially report a higher version then
766 * renegotiate to a lower one in the premaster secret. This
767 * didn't happen with TLS 1.0 as most servers supported it
768 * but it can with TLS 1.1 or later if the server only supports
771 * Possible scenario with previous logic:
772 * 1. Client hello indicates TLS 1.2
773 * 2. Server hello says TLS 1.0
774 * 3. RSA encrypted premaster secret uses 1.2.
775 * 4. Handhaked proceeds using TLS 1.0.
776 * 5. Server sends hello request to renegotiate.
777 * 6. Client hello indicates TLS v1.0 as we now
778 * know that is maximum server supports.
779 * 7. Server chokes on RSA encrypted premaster secret
780 * containing version 1.0.
782 * For interoperability it should be OK to always use the
783 * maximum version we support in client hello and then rely
784 * on the checking of version to ensure the servers isn't
785 * being inconsistent: for example initially negotiating with
786 * TLS 1.0 and renegotiating with TLS 1.2. We do this by using
787 * client_version in client hello and not resetting it to
788 * the negotiated version.
791 *(p++)=s->version>>8;
792 *(p++)=s->version&0xff;
793 s->client_version=s->version;
795 *(p++)=s->client_version>>8;
796 *(p++)=s->client_version&0xff;
800 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
807 i=s->session->session_id_length;
811 if (i > (int)sizeof(s->session->session_id))
813 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
816 memcpy(p,s->session->session_id,i);
820 /* cookie stuff for DTLS */
823 if ( s->d1->cookie_len > sizeof(s->d1->cookie))
825 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
828 *(p++) = s->d1->cookie_len;
829 memcpy(p, s->d1->cookie, s->d1->cookie_len);
830 p += s->d1->cookie_len;
833 /* Ciphers supported */
834 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
837 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
840 #ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
841 /* Some servers hang if client hello > 256 bytes
842 * as hack workaround chop number of supported ciphers
843 * to keep it well below this if we use TLS v1.2
845 if (TLS1_get_version(s) >= TLS1_2_VERSION
846 && i > OPENSSL_MAX_TLS1_2_CIPHER_LENGTH)
847 i = OPENSSL_MAX_TLS1_2_CIPHER_LENGTH & ~1;
853 #ifdef OPENSSL_NO_COMP
857 if ((s->options & SSL_OP_NO_COMPRESSION)
858 || !s->ctx->comp_methods)
861 j=sk_SSL_COMP_num(s->ctx->comp_methods);
865 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
869 *(p++)=0; /* Add the NULL method */
871 #ifndef OPENSSL_NO_TLSEXT
873 if (ssl_prepare_clienthello_tlsext(s) <= 0)
875 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
878 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
880 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
886 ssl_set_handshake_header(s, SSL3_MT_CLIENT_HELLO, l);
887 s->state=SSL3_ST_CW_CLNT_HELLO_B;
890 /* SSL3_ST_CW_CLNT_HELLO_B */
891 return ssl_do_write(s);
896 int ssl3_get_server_hello(SSL *s)
898 STACK_OF(SSL_CIPHER) *sk;
902 int i,al=SSL_AD_INTERNAL_ERROR,ok;
905 #ifndef OPENSSL_NO_COMP
908 /* Hello verify request and/or server hello version may not
909 * match so set first packet if we're negotiating version.
914 n=s->method->ssl_get_message(s,
915 SSL3_ST_CR_SRVR_HELLO_A,
916 SSL3_ST_CR_SRVR_HELLO_B,
921 if (!ok) return((int)n);
926 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
928 if ( s->d1->send_cookie == 0)
930 s->s3->tmp.reuse_message = 1;
933 else /* already sent a cookie */
935 al=SSL_AD_UNEXPECTED_MESSAGE;
936 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
942 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
944 al=SSL_AD_UNEXPECTED_MESSAGE;
945 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
949 d=p=(unsigned char *)s->init_msg;
950 if (s->method->version == DTLS_ANY_VERSION)
952 /* Work out correct protocol version to use */
953 int hversion = (p[0] << 8)|p[1];
954 int options = s->options;
955 if (hversion == DTLS1_2_VERSION
956 && !(options & SSL_OP_NO_DTLSv1_2))
957 s->method = DTLSv1_2_client_method();
958 else if (tls1_suiteb(s))
960 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE);
961 s->version = hversion;
962 al = SSL_AD_PROTOCOL_VERSION;
965 else if (hversion == DTLS1_VERSION
966 && !(options & SSL_OP_NO_DTLSv1))
967 s->method = DTLSv1_client_method();
970 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
971 s->version = hversion;
972 al = SSL_AD_PROTOCOL_VERSION;
975 s->version = s->client_version = s->method->version;
978 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
980 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
981 s->version=(s->version&0xff00)|p[1];
982 al=SSL_AD_PROTOCOL_VERSION;
987 /* load the server hello data */
988 /* load the server random */
989 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
992 /* get the session-id */
995 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
997 al=SSL_AD_ILLEGAL_PARAMETER;
998 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
1002 #ifndef OPENSSL_NO_TLSEXT
1003 /* check if we want to resume the session based on external pre-shared secret */
1004 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
1006 SSL_CIPHER *pref_cipher=NULL;
1007 s->session->master_key_length=sizeof(s->session->master_key);
1008 if (s->tls_session_secret_cb(s, s->session->master_key,
1009 &s->session->master_key_length,
1011 s->tls_session_secret_cb_arg))
1013 s->session->cipher = pref_cipher ?
1014 pref_cipher : ssl_get_cipher_by_char(s, p+j);
1017 #endif /* OPENSSL_NO_TLSEXT */
1019 if (j != 0 && j == s->session->session_id_length
1020 && memcmp(p,s->session->session_id,j) == 0)
1022 if(s->sid_ctx_length != s->session->sid_ctx_length
1023 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
1025 /* actually a client application bug */
1026 al=SSL_AD_ILLEGAL_PARAMETER;
1027 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
1032 else /* a miss or crap from the other end */
1034 /* If we were trying for session-id reuse, make a new
1035 * SSL_SESSION so we don't stuff up other people */
1037 if (s->session->session_id_length > 0)
1039 if (!ssl_get_new_session(s,0))
1044 s->session->session_id_length=j;
1045 memcpy(s->session->session_id,p,j); /* j could be 0 */
1048 c=ssl_get_cipher_by_char(s,p);
1051 /* unknown cipher */
1052 al=SSL_AD_ILLEGAL_PARAMETER;
1053 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
1056 /* If it is a disabled cipher we didn't send it in client hello,
1057 * so return an error.
1059 if (c->algorithm_ssl & ct->mask_ssl ||
1060 c->algorithm_mkey & ct->mask_k ||
1061 c->algorithm_auth & ct->mask_a)
1063 al=SSL_AD_ILLEGAL_PARAMETER;
1064 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
1067 p+=ssl_put_cipher_by_char(s,NULL,NULL);
1069 sk=ssl_get_ciphers_by_id(s);
1070 i=sk_SSL_CIPHER_find(sk,c);
1073 /* we did not say we would use this cipher */
1074 al=SSL_AD_ILLEGAL_PARAMETER;
1075 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
1079 /* Depending on the session caching (internal/external), the cipher
1080 and/or cipher_id values may not be set. Make sure that
1081 cipher_id is set and use it for comparison. */
1082 if (s->session->cipher)
1083 s->session->cipher_id = s->session->cipher->id;
1084 if (s->hit && (s->session->cipher_id != c->id))
1086 /* Workaround is now obsolete */
1089 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
1092 al=SSL_AD_ILLEGAL_PARAMETER;
1093 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
1097 s->s3->tmp.new_cipher=c;
1098 /* Don't digest cached records if no sigalgs: we may need them for
1099 * client authentication.
1101 if (!SSL_USE_SIGALGS(s) && !ssl3_digest_cached_records(s))
1103 /* lets get the compression algorithm */
1105 #ifdef OPENSSL_NO_COMP
1108 al=SSL_AD_ILLEGAL_PARAMETER;
1109 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
1112 /* If compression is disabled we'd better not try to resume a session
1113 * using compression.
1115 if (s->session->compress_meth != 0)
1117 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
1122 if (s->hit && j != s->session->compress_meth)
1124 al=SSL_AD_ILLEGAL_PARAMETER;
1125 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
1130 else if (s->options & SSL_OP_NO_COMPRESSION)
1132 al=SSL_AD_ILLEGAL_PARAMETER;
1133 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
1137 comp=ssl3_comp_find(s->ctx->comp_methods,j);
1139 if ((j != 0) && (comp == NULL))
1141 al=SSL_AD_ILLEGAL_PARAMETER;
1142 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
1147 s->s3->tmp.new_compression=comp;
1151 #ifndef OPENSSL_NO_TLSEXT
1153 if (!ssl_parse_serverhello_tlsext(s,&p,d,n))
1155 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
1162 /* wrong packet length */
1163 al=SSL_AD_DECODE_ERROR;
1164 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
1170 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1175 int ssl3_get_server_certificate(SSL *s)
1177 int al,i,ok,ret= -1;
1178 unsigned long n,nc,llen,l;
1180 const unsigned char *q,*p;
1182 STACK_OF(X509) *sk=NULL;
1184 EVP_PKEY *pkey=NULL;
1185 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1187 n=s->method->ssl_get_message(s,
1194 if (!ok) return((int)n);
1196 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1197 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1198 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1200 s->s3->tmp.reuse_message=1;
1204 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1206 al=SSL_AD_UNEXPECTED_MESSAGE;
1207 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1210 p=d=(unsigned char *)s->init_msg;
1212 if ((sk=sk_X509_new_null()) == NULL)
1214 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1221 al=SSL_AD_DECODE_ERROR;
1222 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1225 for (nc=0; nc<llen; )
1228 if ((l+nc+3) > llen)
1230 al=SSL_AD_DECODE_ERROR;
1231 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1236 x=d2i_X509(NULL,&q,l);
1239 al=SSL_AD_BAD_CERTIFICATE;
1240 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1245 al=SSL_AD_DECODE_ERROR;
1246 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1249 if (!sk_X509_push(sk,x))
1251 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1259 i=ssl_verify_cert_chain(s,sk);
1260 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1261 #ifndef OPENSSL_NO_KRB5
1262 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1263 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1264 #endif /* OPENSSL_NO_KRB5 */
1267 al=ssl_verify_alarm_type(s->verify_result);
1268 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1271 ERR_clear_error(); /* but we keep s->verify_result */
1273 sc=ssl_sess_cert_new();
1274 if (sc == NULL) goto err;
1276 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1277 s->session->sess_cert=sc;
1280 /* Inconsistency alert: cert_chain does include the peer's
1281 * certificate, which we don't include in s3_srvr.c */
1282 x=sk_X509_value(sk,0);
1284 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1286 pkey=X509_get_pubkey(x);
1288 /* VRS: allow null cert if auth == KRB5 */
1289 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1290 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1294 printf("pkey,x = %p, %p\n", pkey,x);
1295 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1296 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1297 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1298 #endif /* KSSL_DEBUG */
1300 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1304 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1305 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1309 i=ssl_cert_type(x,pkey);
1310 if (need_cert && i < 0)
1314 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1315 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1321 int exp_idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
1322 if (exp_idx >= 0 && i != exp_idx)
1325 al=SSL_AD_ILLEGAL_PARAMETER;
1326 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1327 SSL_R_WRONG_CERTIFICATE_TYPE);
1330 sc->peer_cert_type=i;
1331 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1332 /* Why would the following ever happen?
1333 * We just created sc a couple of lines ago. */
1334 if (sc->peer_pkeys[i].x509 != NULL)
1335 X509_free(sc->peer_pkeys[i].x509);
1336 sc->peer_pkeys[i].x509=x;
1337 sc->peer_key= &(sc->peer_pkeys[i]);
1339 if (s->session->peer != NULL)
1340 X509_free(s->session->peer);
1341 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1346 sc->peer_cert_type=i;
1349 if (s->session->peer != NULL)
1350 X509_free(s->session->peer);
1351 s->session->peer=NULL;
1353 s->session->verify_result = s->verify_result;
1356 #ifndef OPENSSL_NO_TLSEXT
1357 /* Check the audit proof. */
1358 if (s->ctx->tlsext_authz_server_audit_proof_cb)
1360 ret = s->ctx->tlsext_authz_server_audit_proof_cb(s,
1361 s->ctx->tlsext_authz_server_audit_proof_cb_arg);
1364 al = SSL_AD_BAD_CERTIFICATE;
1365 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_INVALID_AUDIT_PROOF);
1375 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1378 EVP_PKEY_free(pkey);
1380 sk_X509_pop_free(sk,X509_free);
1384 int ssl3_get_key_exchange(SSL *s)
1386 #ifndef OPENSSL_NO_RSA
1387 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1390 unsigned char *param,*p;
1391 int al,i,j,param_len,ok;
1393 EVP_PKEY *pkey=NULL;
1394 const EVP_MD *md = NULL;
1395 #ifndef OPENSSL_NO_RSA
1398 #ifndef OPENSSL_NO_DH
1401 #ifndef OPENSSL_NO_ECDH
1402 EC_KEY *ecdh = NULL;
1403 BN_CTX *bn_ctx = NULL;
1404 EC_POINT *srvr_ecpoint = NULL;
1406 int encoded_pt_len = 0;
1409 /* use same message size as in ssl3_get_certificate_request()
1410 * as ServerKeyExchange message may be skipped */
1411 n=s->method->ssl_get_message(s,
1412 SSL3_ST_CR_KEY_EXCH_A,
1413 SSL3_ST_CR_KEY_EXCH_B,
1417 if (!ok) return((int)n);
1419 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1421 #ifndef OPENSSL_NO_PSK
1422 /* In plain PSK ciphersuite, ServerKeyExchange can be
1423 omitted if no identity hint is sent. Set
1424 session->sess_cert anyway to avoid problems
1426 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1428 s->session->sess_cert=ssl_sess_cert_new();
1429 if (s->ctx->psk_identity_hint)
1430 OPENSSL_free(s->ctx->psk_identity_hint);
1431 s->ctx->psk_identity_hint = NULL;
1434 s->s3->tmp.reuse_message=1;
1438 param=p=(unsigned char *)s->init_msg;
1439 if (s->session->sess_cert != NULL)
1441 #ifndef OPENSSL_NO_RSA
1442 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1444 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1445 s->session->sess_cert->peer_rsa_tmp=NULL;
1448 #ifndef OPENSSL_NO_DH
1449 if (s->session->sess_cert->peer_dh_tmp)
1451 DH_free(s->session->sess_cert->peer_dh_tmp);
1452 s->session->sess_cert->peer_dh_tmp=NULL;
1455 #ifndef OPENSSL_NO_ECDH
1456 if (s->session->sess_cert->peer_ecdh_tmp)
1458 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1459 s->session->sess_cert->peer_ecdh_tmp=NULL;
1465 s->session->sess_cert=ssl_sess_cert_new();
1469 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1470 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1471 EVP_MD_CTX_init(&md_ctx);
1473 #ifndef OPENSSL_NO_PSK
1474 if (alg_k & SSL_kPSK)
1476 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1478 al=SSL_AD_HANDSHAKE_FAILURE;
1481 /* Store PSK identity hint for later use, hint is used
1482 * in ssl3_send_client_key_exchange. Assume that the
1483 * maximum length of a PSK identity hint can be as
1484 * long as the maximum length of a PSK identity. */
1485 if (i > PSK_MAX_IDENTITY_LEN)
1487 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1488 SSL_R_DATA_LENGTH_TOO_LONG);
1493 al=SSL_AD_DECODE_ERROR;
1494 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1495 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1498 /* If received PSK identity hint contains NULL
1499 * characters, the hint is truncated from the first
1500 * NULL. p may not be ending with NULL, so create a
1501 * NULL-terminated string. */
1502 memcpy(tmp_id_hint, p, i);
1503 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1504 if (s->ctx->psk_identity_hint != NULL)
1505 OPENSSL_free(s->ctx->psk_identity_hint);
1506 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1507 if (s->ctx->psk_identity_hint == NULL)
1509 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1517 #endif /* !OPENSSL_NO_PSK */
1518 #ifndef OPENSSL_NO_SRP
1519 if (alg_k & SSL_kSRP)
1525 al=SSL_AD_DECODE_ERROR;
1526 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1529 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1531 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1540 al=SSL_AD_DECODE_ERROR;
1541 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1544 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1546 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1551 i = (unsigned int)(p[0]);
1556 al=SSL_AD_DECODE_ERROR;
1557 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1560 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1562 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1571 al=SSL_AD_DECODE_ERROR;
1572 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1575 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1577 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1583 /* We must check if there is a certificate */
1584 #ifndef OPENSSL_NO_RSA
1585 if (alg_a & SSL_aRSA)
1586 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1591 #ifndef OPENSSL_NO_DSA
1592 else if (alg_a & SSL_aDSS)
1593 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1597 #endif /* !OPENSSL_NO_SRP */
1598 #ifndef OPENSSL_NO_RSA
1599 if (alg_k & SSL_kRSA)
1601 if ((rsa=RSA_new()) == NULL)
1603 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1610 al=SSL_AD_DECODE_ERROR;
1611 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1614 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1616 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1625 al=SSL_AD_DECODE_ERROR;
1626 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1629 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1631 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1637 /* this should be because we are using an export cipher */
1638 if (alg_a & SSL_aRSA)
1639 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1642 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1645 s->session->sess_cert->peer_rsa_tmp=rsa;
1648 #else /* OPENSSL_NO_RSA */
1652 #ifndef OPENSSL_NO_DH
1653 else if (alg_k & SSL_kEDH)
1655 if ((dh=DH_new()) == NULL)
1657 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1664 al=SSL_AD_DECODE_ERROR;
1665 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1668 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1670 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1679 al=SSL_AD_DECODE_ERROR;
1680 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1683 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1685 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1694 al=SSL_AD_DECODE_ERROR;
1695 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1698 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1700 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1706 #ifndef OPENSSL_NO_RSA
1707 if (alg_a & SSL_aRSA)
1708 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1713 #ifndef OPENSSL_NO_DSA
1714 else if (alg_a & SSL_aDSS)
1715 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1717 /* else anonymous DH, so no certificate or pkey. */
1719 s->session->sess_cert->peer_dh_tmp=dh;
1722 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1724 al=SSL_AD_ILLEGAL_PARAMETER;
1725 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1728 #endif /* !OPENSSL_NO_DH */
1730 #ifndef OPENSSL_NO_ECDH
1731 else if (alg_k & SSL_kEECDH)
1734 const EC_GROUP *group;
1736 if ((ecdh=EC_KEY_new()) == NULL)
1738 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1742 /* Extract elliptic curve parameters and the
1743 * server's ephemeral ECDH public key.
1744 * Keep accumulating lengths of various components in
1745 * param_len and make sure it never exceeds n.
1748 /* XXX: For now we only support named (not generic) curves
1749 * and the ECParameters in this case is just three bytes.
1752 /* Check curve is one of our prefrences, if not server has
1753 * sent an invalid curve.
1755 if (!tls1_check_curve(s, p, param_len))
1757 al=SSL_AD_DECODE_ERROR;
1758 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_CURVE);
1762 if ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0)
1764 al=SSL_AD_INTERNAL_ERROR;
1765 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1769 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1772 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1775 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1777 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1780 EC_GROUP_free(ngroup);
1782 group = EC_KEY_get0_group(ecdh);
1784 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1785 (EC_GROUP_get_degree(group) > 163))
1787 al=SSL_AD_EXPORT_RESTRICTION;
1788 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1794 /* Next, get the encoded ECPoint */
1795 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1796 ((bn_ctx = BN_CTX_new()) == NULL))
1798 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1802 encoded_pt_len = *p; /* length of encoded point */
1804 param_len += (1 + encoded_pt_len);
1805 if ((param_len > n) ||
1806 (EC_POINT_oct2point(group, srvr_ecpoint,
1807 p, encoded_pt_len, bn_ctx) == 0))
1809 al=SSL_AD_DECODE_ERROR;
1810 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1817 /* The ECC/TLS specification does not mention
1818 * the use of DSA to sign ECParameters in the server
1819 * key exchange message. We do support RSA and ECDSA.
1822 #ifndef OPENSSL_NO_RSA
1823 else if (alg_a & SSL_aRSA)
1824 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1826 #ifndef OPENSSL_NO_ECDSA
1827 else if (alg_a & SSL_aECDSA)
1828 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1830 /* else anonymous ECDH, so no certificate or pkey. */
1831 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1832 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1834 BN_CTX_free(bn_ctx);
1836 EC_POINT_free(srvr_ecpoint);
1837 srvr_ecpoint = NULL;
1841 al=SSL_AD_UNEXPECTED_MESSAGE;
1842 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1845 #endif /* !OPENSSL_NO_ECDH */
1848 /* p points to the next byte, there are 'n' bytes left */
1850 /* if it was signed, check the signature */
1853 if (SSL_USE_SIGALGS(s))
1855 int rv = tls12_check_peer_sigalg(&md, s, p, pkey);
1860 al = SSL_AD_DECODE_ERROR;
1864 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1874 j=EVP_PKEY_size(pkey);
1876 if ((i != n) || (n > j) || (n <= 0))
1878 /* wrong packet length */
1879 al=SSL_AD_DECODE_ERROR;
1880 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1884 #ifndef OPENSSL_NO_RSA
1885 if (pkey->type == EVP_PKEY_RSA && !SSL_USE_SIGALGS(s))
1891 for (num=2; num > 0; num--)
1893 EVP_MD_CTX_set_flags(&md_ctx,
1894 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1895 EVP_DigestInit_ex(&md_ctx,(num == 2)
1896 ?s->ctx->md5:s->ctx->sha1, NULL);
1897 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1898 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1899 EVP_DigestUpdate(&md_ctx,param,param_len);
1900 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1904 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1908 al=SSL_AD_DECRYPT_ERROR;
1909 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1915 al=SSL_AD_DECRYPT_ERROR;
1916 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1923 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1924 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1925 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1926 EVP_VerifyUpdate(&md_ctx,param,param_len);
1927 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1930 al=SSL_AD_DECRYPT_ERROR;
1931 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1938 /* aNULL or kPSK do not need public keys */
1939 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1941 /* Might be wrong key type, check it */
1942 if (ssl3_check_cert_and_algorithm(s))
1943 /* Otherwise this shouldn't happen */
1944 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1947 /* still data left over */
1950 al=SSL_AD_DECODE_ERROR;
1951 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1955 EVP_PKEY_free(pkey);
1956 EVP_MD_CTX_cleanup(&md_ctx);
1959 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1961 EVP_PKEY_free(pkey);
1962 #ifndef OPENSSL_NO_RSA
1966 #ifndef OPENSSL_NO_DH
1970 #ifndef OPENSSL_NO_ECDH
1971 BN_CTX_free(bn_ctx);
1972 EC_POINT_free(srvr_ecpoint);
1976 EVP_MD_CTX_cleanup(&md_ctx);
1980 int ssl3_get_certificate_request(SSL *s)
1983 unsigned long n,nc,l;
1984 unsigned int llen, ctype_num,i;
1986 const unsigned char *p,*q;
1988 STACK_OF(X509_NAME) *ca_sk=NULL;
1990 n=s->method->ssl_get_message(s,
1991 SSL3_ST_CR_CERT_REQ_A,
1992 SSL3_ST_CR_CERT_REQ_B,
1997 if (!ok) return((int)n);
1999 s->s3->tmp.cert_req=0;
2001 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
2003 s->s3->tmp.reuse_message=1;
2004 /* If we get here we don't need any cached handshake records
2005 * as we wont be doing client auth.
2007 if (s->s3->handshake_buffer)
2009 if (!ssl3_digest_cached_records(s))
2015 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
2017 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2018 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
2022 /* TLS does not like anon-DH with client cert */
2023 if (s->version > SSL3_VERSION)
2025 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
2027 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2028 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
2033 p=d=(unsigned char *)s->init_msg;
2035 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
2037 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
2041 /* get the certificate types */
2043 if (s->cert->ctypes)
2045 OPENSSL_free(s->cert->ctypes);
2046 s->cert->ctypes = NULL;
2048 if (ctype_num > SSL3_CT_NUMBER)
2050 /* If we exceed static buffer copy all to cert structure */
2051 s->cert->ctypes = OPENSSL_malloc(ctype_num);
2052 memcpy(s->cert->ctypes, p, ctype_num);
2053 s->cert->ctype_num = (size_t)ctype_num;
2054 ctype_num=SSL3_CT_NUMBER;
2056 for (i=0; i<ctype_num; i++)
2057 s->s3->tmp.ctype[i]= p[i];
2059 if (SSL_USE_SIGALGS(s))
2062 /* Check we have enough room for signature algorithms and
2063 * following length value.
2065 if ((unsigned long)(p - d + llen + 2) > n)
2067 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2068 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
2071 /* Clear certificate digests and validity flags */
2072 for (i = 0; i < SSL_PKEY_NUM; i++)
2074 s->cert->pkeys[i].digest = NULL;
2075 s->cert->pkeys[i].valid_flags = 0;
2077 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
2079 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2080 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
2086 /* get the CA RDNs */
2091 out=fopen("/tmp/vsign.der","w");
2092 fwrite(p,1,llen,out);
2097 if ((unsigned long)(p - d + llen) != n)
2099 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2100 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
2104 for (nc=0; nc<llen; )
2107 if ((l+nc+2) > llen)
2109 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
2110 goto cont; /* netscape bugs */
2111 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2112 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
2118 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
2120 /* If netscape tolerance is on, ignore errors */
2121 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
2125 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2126 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
2133 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2134 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
2137 if (!sk_X509_NAME_push(ca_sk,xn))
2139 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
2153 /* we should setup a certificate to return.... */
2154 s->s3->tmp.cert_req=1;
2155 s->s3->tmp.ctype_num=ctype_num;
2156 if (s->s3->tmp.ca_names != NULL)
2157 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
2158 s->s3->tmp.ca_names=ca_sk;
2163 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
2167 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
2169 return(X509_NAME_cmp(*a,*b));
2171 #ifndef OPENSSL_NO_TLSEXT
2172 int ssl3_get_new_session_ticket(SSL *s)
2174 int ok,al,ret=0, ticklen;
2176 const unsigned char *p;
2179 n=s->method->ssl_get_message(s,
2180 SSL3_ST_CR_SESSION_TICKET_A,
2181 SSL3_ST_CR_SESSION_TICKET_B,
2189 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
2191 s->s3->tmp.reuse_message=1;
2194 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
2196 al=SSL_AD_UNEXPECTED_MESSAGE;
2197 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
2202 /* need at least ticket_lifetime_hint + ticket length */
2203 al = SSL_AD_DECODE_ERROR;
2204 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2208 p=d=(unsigned char *)s->init_msg;
2209 n2l(p, s->session->tlsext_tick_lifetime_hint);
2211 /* ticket_lifetime_hint + ticket_length + ticket */
2212 if (ticklen + 6 != n)
2214 al = SSL_AD_DECODE_ERROR;
2215 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2218 if (s->session->tlsext_tick)
2220 OPENSSL_free(s->session->tlsext_tick);
2221 s->session->tlsext_ticklen = 0;
2223 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2224 if (!s->session->tlsext_tick)
2226 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2229 memcpy(s->session->tlsext_tick, p, ticklen);
2230 s->session->tlsext_ticklen = ticklen;
2231 /* There are two ways to detect a resumed ticket sesion.
2232 * One is to set an appropriate session ID and then the server
2233 * must return a match in ServerHello. This allows the normal
2234 * client session ID matching to work and we know much
2235 * earlier that the ticket has been accepted.
2237 * The other way is to set zero length session ID when the
2238 * ticket is presented and rely on the handshake to determine
2239 * session resumption.
2241 * We choose the former approach because this fits in with
2242 * assumptions elsewhere in OpenSSL. The session ID is set
2243 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2246 EVP_Digest(p, ticklen,
2247 s->session->session_id, &s->session->session_id_length,
2248 #ifndef OPENSSL_NO_SHA256
2249 EVP_sha256(), NULL);
2256 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2261 int ssl3_get_cert_status(SSL *s)
2264 unsigned long resplen,n;
2265 const unsigned char *p;
2267 n=s->method->ssl_get_message(s,
2268 SSL3_ST_CR_CERT_STATUS_A,
2269 SSL3_ST_CR_CERT_STATUS_B,
2270 SSL3_MT_CERTIFICATE_STATUS,
2274 if (!ok) return((int)n);
2277 /* need at least status type + length */
2278 al = SSL_AD_DECODE_ERROR;
2279 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2282 p = (unsigned char *)s->init_msg;
2283 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2285 al = SSL_AD_DECODE_ERROR;
2286 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2290 if (resplen + 4 != n)
2292 al = SSL_AD_DECODE_ERROR;
2293 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2296 if (s->tlsext_ocsp_resp)
2297 OPENSSL_free(s->tlsext_ocsp_resp);
2298 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2299 if (!s->tlsext_ocsp_resp)
2301 al = SSL_AD_INTERNAL_ERROR;
2302 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2305 s->tlsext_ocsp_resplen = resplen;
2306 if (s->ctx->tlsext_status_cb)
2309 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2312 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2313 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2318 al = SSL_AD_INTERNAL_ERROR;
2319 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2325 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2330 int ssl3_get_server_done(SSL *s)
2335 n=s->method->ssl_get_message(s,
2336 SSL3_ST_CR_SRVR_DONE_A,
2337 SSL3_ST_CR_SRVR_DONE_B,
2338 SSL3_MT_SERVER_DONE,
2339 30, /* should be very small, like 0 :-) */
2342 if (!ok) return((int)n);
2345 /* should contain no data */
2346 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2347 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2355 int ssl3_send_client_key_exchange(SSL *s)
2359 unsigned long alg_k;
2360 #ifndef OPENSSL_NO_RSA
2362 EVP_PKEY *pkey=NULL;
2364 #ifndef OPENSSL_NO_KRB5
2366 #endif /* OPENSSL_NO_KRB5 */
2367 #ifndef OPENSSL_NO_ECDH
2368 EC_KEY *clnt_ecdh = NULL;
2369 const EC_POINT *srvr_ecpoint = NULL;
2370 EVP_PKEY *srvr_pub_pkey = NULL;
2371 unsigned char *encodedPoint = NULL;
2372 int encoded_pt_len = 0;
2373 BN_CTX * bn_ctx = NULL;
2376 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2378 p = ssl_handshake_start(s);
2380 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2382 /* Fool emacs indentation */
2384 #ifndef OPENSSL_NO_RSA
2385 else if (alg_k & SSL_kRSA)
2388 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2390 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2391 rsa=s->session->sess_cert->peer_rsa_tmp;
2394 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2395 if ((pkey == NULL) ||
2396 (pkey->type != EVP_PKEY_RSA) ||
2397 (pkey->pkey.rsa == NULL))
2399 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2403 EVP_PKEY_free(pkey);
2406 tmp_buf[0]=s->client_version>>8;
2407 tmp_buf[1]=s->client_version&0xff;
2408 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2411 s->session->master_key_length=sizeof tmp_buf;
2414 /* Fix buf for TLS and beyond */
2415 if (s->version > SSL3_VERSION)
2417 n=RSA_public_encrypt(sizeof tmp_buf,
2418 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2420 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2421 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2425 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2429 /* Fix buf for TLS and beyond */
2430 if (s->version > SSL3_VERSION)
2436 s->session->master_key_length=
2437 s->method->ssl3_enc->generate_master_secret(s,
2438 s->session->master_key,
2439 tmp_buf,sizeof tmp_buf);
2440 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2443 #ifndef OPENSSL_NO_KRB5
2444 else if (alg_k & SSL_kKRB5)
2446 krb5_error_code krb5rc;
2447 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2448 /* krb5_data krb5_ap_req; */
2449 krb5_data *enc_ticket;
2450 krb5_data authenticator, *authp = NULL;
2451 EVP_CIPHER_CTX ciph_ctx;
2452 const EVP_CIPHER *enc = NULL;
2453 unsigned char iv[EVP_MAX_IV_LENGTH];
2454 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2455 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2456 + EVP_MAX_IV_LENGTH];
2457 int padl, outl = sizeof(epms);
2459 EVP_CIPHER_CTX_init(&ciph_ctx);
2462 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2464 #endif /* KSSL_DEBUG */
2468 if (KRB5SENDAUTH) authp = &authenticator;
2469 #endif /* KRB5SENDAUTH */
2471 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2473 enc = kssl_map_enc(kssl_ctx->enctype);
2478 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2479 if (krb5rc && kssl_err.text)
2480 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2482 #endif /* KSSL_DEBUG */
2486 ssl3_send_alert(s,SSL3_AL_FATAL,
2487 SSL_AD_HANDSHAKE_FAILURE);
2488 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2493 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2494 ** in place of RFC 2712 KerberosWrapper, as in:
2496 ** Send ticket (copy to *p, set n = length)
2497 ** n = krb5_ap_req.length;
2498 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2499 ** if (krb5_ap_req.data)
2500 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2502 ** Now using real RFC 2712 KerberosWrapper
2503 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2504 ** Note: 2712 "opaque" types are here replaced
2505 ** with a 2-byte length followed by the value.
2507 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2508 ** Where "xx xx" = length bytes. Shown here with
2509 ** optional authenticator omitted.
2512 /* KerberosWrapper.Ticket */
2513 s2n(enc_ticket->length,p);
2514 memcpy(p, enc_ticket->data, enc_ticket->length);
2515 p+= enc_ticket->length;
2516 n = enc_ticket->length + 2;
2518 /* KerberosWrapper.Authenticator */
2519 if (authp && authp->length)
2521 s2n(authp->length,p);
2522 memcpy(p, authp->data, authp->length);
2524 n+= authp->length + 2;
2532 s2n(0,p);/* null authenticator length */
2536 tmp_buf[0]=s->client_version>>8;
2537 tmp_buf[1]=s->client_version&0xff;
2538 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2541 /* 20010420 VRS. Tried it this way; failed.
2542 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2543 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2544 ** kssl_ctx->length);
2545 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2548 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2549 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2551 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2553 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2555 if (outl > (int)sizeof epms)
2557 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2560 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2562 /* KerberosWrapper.EncryptedPreMasterSecret */
2564 memcpy(p, epms, outl);
2568 s->session->master_key_length=
2569 s->method->ssl3_enc->generate_master_secret(s,
2570 s->session->master_key,
2571 tmp_buf, sizeof tmp_buf);
2573 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2574 OPENSSL_cleanse(epms, outl);
2577 #ifndef OPENSSL_NO_DH
2578 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2580 DH *dh_srvr,*dh_clnt;
2581 SESS_CERT *scert = s->session->sess_cert;
2585 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2586 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2590 if (scert->peer_dh_tmp != NULL)
2591 dh_srvr=scert->peer_dh_tmp;
2594 /* we get them from the cert */
2595 int idx = scert->peer_cert_type;
2596 EVP_PKEY *spkey = NULL;
2599 spkey = X509_get_pubkey(
2600 scert->peer_pkeys[idx].x509);
2603 dh_srvr = EVP_PKEY_get1_DH(spkey);
2604 EVP_PKEY_free(spkey);
2606 if (dh_srvr == NULL)
2608 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2609 ERR_R_INTERNAL_ERROR);
2613 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
2615 /* Use client certificate key */
2616 EVP_PKEY *clkey = s->cert->key->privatekey;
2619 dh_clnt = EVP_PKEY_get1_DH(clkey);
2620 if (dh_clnt == NULL)
2622 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2623 ERR_R_INTERNAL_ERROR);
2629 /* generate a new random key */
2630 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2632 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2635 if (!DH_generate_key(dh_clnt))
2637 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2643 /* use the 'p' output buffer for the DH key, but
2644 * make sure to clear it out afterwards */
2646 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2647 if (scert->peer_dh_tmp == NULL)
2652 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2657 /* generate master key from the result */
2658 s->session->master_key_length=
2659 s->method->ssl3_enc->generate_master_secret(s,
2660 s->session->master_key,p,n);
2664 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
2668 /* send off the data */
2669 n=BN_num_bytes(dh_clnt->pub_key);
2671 BN_bn2bin(dh_clnt->pub_key,p);
2677 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2681 #ifndef OPENSSL_NO_ECDH
2682 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2684 const EC_GROUP *srvr_group = NULL;
2686 int ecdh_clnt_cert = 0;
2689 /* Did we send out the client's
2690 * ECDH share for use in premaster
2691 * computation as part of client certificate?
2692 * If so, set ecdh_clnt_cert to 1.
2694 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2696 /* XXX: For now, we do not support client
2697 * authentication using ECDH certificates.
2698 * To add such support, one needs to add
2699 * code that checks for appropriate
2700 * conditions and sets ecdh_clnt_cert to 1.
2701 * For example, the cert have an ECC
2702 * key on the same curve as the server's
2703 * and the key should be authorized for
2706 * One also needs to add code in ssl3_connect
2707 * to skip sending the certificate verify
2710 * if ((s->cert->key->privatekey != NULL) &&
2711 * (s->cert->key->privatekey->type ==
2712 * EVP_PKEY_EC) && ...)
2713 * ecdh_clnt_cert = 1;
2717 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2719 tkey = s->session->sess_cert->peer_ecdh_tmp;
2723 /* Get the Server Public Key from Cert */
2724 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2725 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2726 if ((srvr_pub_pkey == NULL) ||
2727 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2728 (srvr_pub_pkey->pkey.ec == NULL))
2730 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2731 ERR_R_INTERNAL_ERROR);
2735 tkey = srvr_pub_pkey->pkey.ec;
2738 srvr_group = EC_KEY_get0_group(tkey);
2739 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2741 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2743 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2744 ERR_R_INTERNAL_ERROR);
2748 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2750 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2754 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2756 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2761 /* Reuse key info from our certificate
2762 * We only need our private key to perform
2763 * the ECDH computation.
2765 const BIGNUM *priv_key;
2766 tkey = s->cert->key->privatekey->pkey.ec;
2767 priv_key = EC_KEY_get0_private_key(tkey);
2768 if (priv_key == NULL)
2770 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2773 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2775 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2781 /* Generate a new ECDH key pair */
2782 if (!(EC_KEY_generate_key(clnt_ecdh)))
2784 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2789 /* use the 'p' output buffer for the ECDH key, but
2790 * make sure to clear it out afterwards
2793 field_size = EC_GROUP_get_degree(srvr_group);
2794 if (field_size <= 0)
2796 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2800 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2803 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2808 /* generate master key from the result */
2809 s->session->master_key_length = s->method->ssl3_enc \
2810 -> generate_master_secret(s,
2811 s->session->master_key,
2814 memset(p, 0, n); /* clean up */
2818 /* Send empty client key exch message */
2823 /* First check the size of encoding and
2824 * allocate memory accordingly.
2827 EC_POINT_point2oct(srvr_group,
2828 EC_KEY_get0_public_key(clnt_ecdh),
2829 POINT_CONVERSION_UNCOMPRESSED,
2832 encodedPoint = (unsigned char *)
2833 OPENSSL_malloc(encoded_pt_len *
2834 sizeof(unsigned char));
2835 bn_ctx = BN_CTX_new();
2836 if ((encodedPoint == NULL) ||
2839 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2843 /* Encode the public key */
2844 n = EC_POINT_point2oct(srvr_group,
2845 EC_KEY_get0_public_key(clnt_ecdh),
2846 POINT_CONVERSION_UNCOMPRESSED,
2847 encodedPoint, encoded_pt_len, bn_ctx);
2849 *p = n; /* length of encoded point */
2850 /* Encoded point will be copied here */
2852 /* copy the point */
2853 memcpy((unsigned char *)p, encodedPoint, n);
2854 /* increment n to account for length field */
2858 /* Free allocated memory */
2859 BN_CTX_free(bn_ctx);
2860 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2861 if (clnt_ecdh != NULL)
2862 EC_KEY_free(clnt_ecdh);
2863 EVP_PKEY_free(srvr_pub_pkey);
2865 #endif /* !OPENSSL_NO_ECDH */
2866 else if (alg_k & SSL_kGOST)
2868 /* GOST key exchange message creation */
2869 EVP_PKEY_CTX *pkey_ctx;
2872 unsigned int md_len;
2874 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2875 EVP_MD_CTX *ukm_hash;
2878 /* Get server sertificate PKEY and create ctx from it */
2879 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2881 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2883 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2887 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2888 /* If we have send a certificate, and certificate key
2890 * parameters match those of server certificate, use
2891 * certificate key for key exchange
2894 /* Otherwise, generate ephemeral key pair */
2896 EVP_PKEY_encrypt_init(pkey_ctx);
2897 /* Generate session key */
2898 RAND_bytes(premaster_secret,32);
2899 /* If we have client certificate, use its secret as peer key */
2900 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2901 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2902 /* If there was an error - just ignore it. Ephemeral key
2908 /* Compute shared IV and store it in algorithm-specific
2910 ukm_hash = EVP_MD_CTX_create();
2911 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2912 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2913 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2914 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2915 EVP_MD_CTX_destroy(ukm_hash);
2916 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2918 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2922 /* Make GOST keytransport blob message */
2923 /*Encapsulate it into sequence */
2924 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2926 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2927 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2934 *(p++)= msglen & 0xff;
2939 *(p++)= msglen & 0xff;
2942 memcpy(p, tmp, msglen);
2943 /* Check if pubkey from client certificate was used */
2944 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2946 /* Set flag "skip certificate verify" */
2947 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2949 EVP_PKEY_CTX_free(pkey_ctx);
2950 s->session->master_key_length=
2951 s->method->ssl3_enc->generate_master_secret(s,
2952 s->session->master_key,premaster_secret,32);
2953 EVP_PKEY_free(pub_key);
2956 #ifndef OPENSSL_NO_SRP
2957 else if (alg_k & SSL_kSRP)
2959 if (s->srp_ctx.A != NULL)
2961 /* send off the data */
2962 n=BN_num_bytes(s->srp_ctx.A);
2964 BN_bn2bin(s->srp_ctx.A,p);
2969 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2972 if (s->session->srp_username != NULL)
2973 OPENSSL_free(s->session->srp_username);
2974 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2975 if (s->session->srp_username == NULL)
2977 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2978 ERR_R_MALLOC_FAILURE);
2982 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2984 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2989 #ifndef OPENSSL_NO_PSK
2990 else if (alg_k & SSL_kPSK)
2992 char identity[PSK_MAX_IDENTITY_LEN];
2993 unsigned char *t = NULL;
2994 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2995 unsigned int pre_ms_len = 0, psk_len = 0;
2999 if (s->psk_client_callback == NULL)
3001 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3002 SSL_R_PSK_NO_CLIENT_CB);
3006 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
3007 identity, PSK_MAX_IDENTITY_LEN,
3008 psk_or_pre_ms, sizeof(psk_or_pre_ms));
3009 if (psk_len > PSK_MAX_PSK_LEN)
3011 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3012 ERR_R_INTERNAL_ERROR);
3015 else if (psk_len == 0)
3017 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3018 SSL_R_PSK_IDENTITY_NOT_FOUND);
3022 /* create PSK pre_master_secret */
3023 pre_ms_len = 2+psk_len+2+psk_len;
3025 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
3027 memset(t, 0, psk_len);
3031 if (s->session->psk_identity_hint != NULL)
3032 OPENSSL_free(s->session->psk_identity_hint);
3033 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
3034 if (s->ctx->psk_identity_hint != NULL &&
3035 s->session->psk_identity_hint == NULL)
3037 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3038 ERR_R_MALLOC_FAILURE);
3042 if (s->session->psk_identity != NULL)
3043 OPENSSL_free(s->session->psk_identity);
3044 s->session->psk_identity = BUF_strdup(identity);
3045 if (s->session->psk_identity == NULL)
3047 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3048 ERR_R_MALLOC_FAILURE);
3052 s->session->master_key_length =
3053 s->method->ssl3_enc->generate_master_secret(s,
3054 s->session->master_key,
3055 psk_or_pre_ms, pre_ms_len);
3056 n = strlen(identity);
3058 memcpy(p, identity, n);
3062 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
3063 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
3066 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
3073 ssl3_send_alert(s, SSL3_AL_FATAL,
3074 SSL_AD_HANDSHAKE_FAILURE);
3075 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3076 ERR_R_INTERNAL_ERROR);
3080 ssl_set_handshake_header(s, SSL3_MT_CLIENT_KEY_EXCHANGE, n);
3081 s->state=SSL3_ST_CW_KEY_EXCH_B;
3084 /* SSL3_ST_CW_KEY_EXCH_B */
3085 return ssl_do_write(s);
3087 #ifndef OPENSSL_NO_ECDH
3088 BN_CTX_free(bn_ctx);
3089 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
3090 if (clnt_ecdh != NULL)
3091 EC_KEY_free(clnt_ecdh);
3092 EVP_PKEY_free(srvr_pub_pkey);
3097 int ssl3_send_client_verify(SSL *s)
3100 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
3102 EVP_PKEY_CTX *pctx=NULL;
3108 EVP_MD_CTX_init(&mctx);
3110 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
3112 p= ssl_handshake_start(s);
3113 pkey=s->cert->key->privatekey;
3114 /* Create context from key and test if sha1 is allowed as digest */
3115 pctx = EVP_PKEY_CTX_new(pkey,NULL);
3116 EVP_PKEY_sign_init(pctx);
3117 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
3119 if (!SSL_USE_SIGALGS(s))
3120 s->method->ssl3_enc->cert_verify_mac(s,
3122 &(data[MD5_DIGEST_LENGTH]));
3128 /* For TLS v1.2 send signature algorithm and signature
3129 * using agreed digest and cached handshake records.
3131 if (SSL_USE_SIGALGS(s))
3135 const EVP_MD *md = s->cert->key->digest;
3136 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
3138 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
3140 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3141 ERR_R_INTERNAL_ERROR);
3146 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
3149 if (!EVP_SignInit_ex(&mctx, md, NULL)
3150 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
3151 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
3153 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3159 if (!ssl3_digest_cached_records(s))
3163 #ifndef OPENSSL_NO_RSA
3164 if (pkey->type == EVP_PKEY_RSA)
3166 s->method->ssl3_enc->cert_verify_mac(s,
3169 if (RSA_sign(NID_md5_sha1, data,
3170 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
3171 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
3173 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
3181 #ifndef OPENSSL_NO_DSA
3182 if (pkey->type == EVP_PKEY_DSA)
3184 if (!DSA_sign(pkey->save_type,
3185 &(data[MD5_DIGEST_LENGTH]),
3186 SHA_DIGEST_LENGTH,&(p[2]),
3187 (unsigned int *)&j,pkey->pkey.dsa))
3189 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
3197 #ifndef OPENSSL_NO_ECDSA
3198 if (pkey->type == EVP_PKEY_EC)
3200 if (!ECDSA_sign(pkey->save_type,
3201 &(data[MD5_DIGEST_LENGTH]),
3202 SHA_DIGEST_LENGTH,&(p[2]),
3203 (unsigned int *)&j,pkey->pkey.ec))
3205 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3214 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
3216 unsigned char signbuf[64];
3219 s->method->ssl3_enc->cert_verify_mac(s,
3220 NID_id_GostR3411_94,
3222 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
3223 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3224 ERR_R_INTERNAL_ERROR);
3227 for (i=63,j=0; i>=0; j++, i--) {
3235 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
3238 ssl_set_handshake_header(s, SSL3_MT_CERTIFICATE_VERIFY, n);
3239 s->state=SSL3_ST_CW_CERT_VRFY_B;
3241 EVP_MD_CTX_cleanup(&mctx);
3242 EVP_PKEY_CTX_free(pctx);
3243 return ssl_do_write(s);
3245 EVP_MD_CTX_cleanup(&mctx);
3246 EVP_PKEY_CTX_free(pctx);
3250 /* Check a certificate can be used for client authentication. Currently
3251 * check cert exists, if we have a suitable digest for TLS 1.2 if
3252 * static DH client certificates can be used and optionally checks
3253 * suitability for Suite B.
3255 static int ssl3_check_client_certificate(SSL *s)
3257 unsigned long alg_k;
3258 if (!s->cert || !s->cert->key->x509 || !s->cert->key->privatekey)
3260 /* If no suitable signature algorithm can't use certificate */
3261 if (SSL_USE_SIGALGS(s) && !s->cert->key->digest)
3263 /* If strict mode check suitability of chain before using it.
3264 * This also adjusts suite B digest if necessary.
3266 if (s->cert->cert_flags & SSL_CERT_FLAGS_CHECK_TLS_STRICT &&
3267 !tls1_check_chain(s, NULL, NULL, NULL, -2))
3269 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3270 /* See if we can use client certificate for fixed DH */
3271 if (alg_k & (SSL_kDHr|SSL_kDHd))
3273 SESS_CERT *scert = s->session->sess_cert;
3274 int i = scert->peer_cert_type;
3275 EVP_PKEY *clkey = NULL, *spkey = NULL;
3276 clkey = s->cert->key->privatekey;
3277 /* If client key not DH assume it can be used */
3278 if (EVP_PKEY_id(clkey) != EVP_PKEY_DH)
3281 spkey = X509_get_pubkey(scert->peer_pkeys[i].x509);
3284 /* Compare server and client parameters */
3285 i = EVP_PKEY_cmp_parameters(clkey, spkey);
3286 EVP_PKEY_free(spkey);
3290 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
3295 int ssl3_send_client_certificate(SSL *s)
3298 EVP_PKEY *pkey=NULL;
3301 if (s->state == SSL3_ST_CW_CERT_A)
3303 /* Let cert callback update client certificates if required */
3304 if (s->cert->cert_cb
3305 && s->cert->cert_cb(s, s->cert->cert_cb_arg) <= 0)
3307 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
3310 if (ssl3_check_client_certificate(s))
3311 s->state=SSL3_ST_CW_CERT_C;
3313 s->state=SSL3_ST_CW_CERT_B;
3316 /* We need to get a client cert */
3317 if (s->state == SSL3_ST_CW_CERT_B)
3319 /* If we get an error, we need to
3320 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3321 * We then get retied later */
3323 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3326 s->rwstate=SSL_X509_LOOKUP;
3329 s->rwstate=SSL_NOTHING;
3330 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3332 s->state=SSL3_ST_CW_CERT_B;
3333 if ( !SSL_use_certificate(s,x509) ||
3334 !SSL_use_PrivateKey(s,pkey))
3340 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3343 if (x509 != NULL) X509_free(x509);
3344 if (pkey != NULL) EVP_PKEY_free(pkey);
3345 if (i && !ssl3_check_client_certificate(s))
3349 if (s->version == SSL3_VERSION)
3351 s->s3->tmp.cert_req=0;
3352 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3357 s->s3->tmp.cert_req=2;
3361 /* Ok, we have a cert */
3362 s->state=SSL3_ST_CW_CERT_C;
3365 if (s->state == SSL3_ST_CW_CERT_C)
3367 s->state=SSL3_ST_CW_CERT_D;
3368 ssl3_output_cert_chain(s,
3369 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key);
3371 /* SSL3_ST_CW_CERT_D */
3372 return ssl_do_write(s);
3375 #define has_bits(i,m) (((i)&(m)) == (m))
3377 int ssl3_check_cert_and_algorithm(SSL *s)
3381 EVP_PKEY *pkey=NULL;
3383 #ifndef OPENSSL_NO_RSA
3386 #ifndef OPENSSL_NO_DH
3390 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3391 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3393 /* we don't have a certificate */
3394 if ((alg_a & (SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3397 sc=s->session->sess_cert;
3400 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3404 #ifndef OPENSSL_NO_RSA
3405 rsa=s->session->sess_cert->peer_rsa_tmp;
3407 #ifndef OPENSSL_NO_DH
3408 dh=s->session->sess_cert->peer_dh_tmp;
3411 /* This is the passed certificate */
3413 idx=sc->peer_cert_type;
3414 #ifndef OPENSSL_NO_ECDH
3415 if (idx == SSL_PKEY_ECC)
3417 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3419 { /* check failed */
3420 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3428 else if (alg_a & SSL_aECDSA)
3430 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_ECDSA_SIGNING_CERT);
3433 else if (alg_k & (SSL_kECDHr|SSL_kECDHe))
3435 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_ECDH_CERT);
3439 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3440 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3441 EVP_PKEY_free(pkey);
3444 /* Check that we have a certificate if we require one */
3445 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3447 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3450 #ifndef OPENSSL_NO_DSA
3451 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3453 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3457 #ifndef OPENSSL_NO_RSA
3458 if ((alg_k & SSL_kRSA) &&
3459 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3461 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3465 #ifndef OPENSSL_NO_DH
3466 if ((alg_k & SSL_kEDH) &&
3467 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3469 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3472 else if ((alg_k & SSL_kDHr) && !SSL_USE_SIGALGS(s) &&
3473 !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3475 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3478 #ifndef OPENSSL_NO_DSA
3479 else if ((alg_k & SSL_kDHd) && !SSL_USE_SIGALGS(s) &&
3480 !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3482 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3488 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3490 #ifndef OPENSSL_NO_RSA
3491 if (alg_k & SSL_kRSA)
3494 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3496 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3502 #ifndef OPENSSL_NO_DH
3503 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3506 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3508 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3515 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3521 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3526 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
3527 int ssl3_send_next_proto(SSL *s)
3529 unsigned int len, padding_len;
3532 if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
3534 len = s->next_proto_negotiated_len;
3535 padding_len = 32 - ((len + 2) % 32);
3536 d = (unsigned char *)s->init_buf->data;
3538 memcpy(d + 5, s->next_proto_negotiated, len);
3539 d[5 + len] = padding_len;
3540 memset(d + 6 + len, 0, padding_len);
3541 *(d++)=SSL3_MT_NEXT_PROTO;
3542 l2n3(2 + len + padding_len, d);
3543 s->state = SSL3_ST_CW_NEXT_PROTO_B;
3544 s->init_num = 4 + 2 + len + padding_len;
3548 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3550 #endif /* !OPENSSL_NO_TLSEXT && !OPENSSL_NO_NEXTPROTONEG */
3552 /* Check to see if handshake is full or resumed. Usually this is just a
3553 * case of checking to see if a cache hit has occurred. In the case of
3554 * session tickets we have to check the next message to be sure.
3557 #ifndef OPENSSL_NO_TLSEXT
3558 int ssl3_check_finished(SSL *s)
3562 /* If we have no ticket it cannot be a resumed session. */
3563 if (!s->session->tlsext_tick)
3565 /* this function is called when we really expect a Certificate
3566 * message, so permit appropriate message length */
3567 n=s->method->ssl_get_message(s,
3573 if (!ok) return((int)n);
3574 s->s3->tmp.reuse_message = 1;
3575 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3576 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3583 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3586 #ifndef OPENSSL_NO_ENGINE
3587 if (s->ctx->client_cert_engine)
3589 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3590 SSL_get_client_CA_list(s),
3591 px509, ppkey, NULL, NULL, NULL);
3596 if (s->ctx->client_cert_cb)
3597 i = s->ctx->client_cert_cb(s,px509,ppkey);
3601 #ifndef OPENSSL_NO_TLSEXT
3602 int tls1_get_server_supplemental_data(SSL *s)
3606 unsigned long supp_data_len, authz_data_len;
3608 unsigned short supp_data_type, authz_data_type, proof_len;
3609 const unsigned char *p;
3610 unsigned char *new_proof;
3612 n=s->method->ssl_get_message(s,
3613 SSL3_ST_CR_SUPPLEMENTAL_DATA_A,
3614 SSL3_ST_CR_SUPPLEMENTAL_DATA_B,
3615 SSL3_MT_SUPPLEMENTAL_DATA,
3616 /* use default limit */
3617 TLSEXT_MAXLEN_supplemental_data,
3620 if (!ok) return((int)n);
3622 p = (unsigned char *)s->init_msg;
3624 /* The message cannot be empty */
3627 al = SSL_AD_DECODE_ERROR;
3628 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3631 /* Length of supplemental data */
3632 n2l3(p,supp_data_len);
3634 /* We must have at least one supplemental data entry
3635 * with type (1 byte) and length (2 bytes). */
3636 if (supp_data_len != (unsigned long) n || n < 4)
3638 al = SSL_AD_DECODE_ERROR;
3639 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3642 /* Supplemental data type: must be authz_data */
3643 n2s(p,supp_data_type);
3645 if (supp_data_type != TLSEXT_SUPPLEMENTALDATATYPE_authz_data)
3647 al = SSL_AD_UNEXPECTED_MESSAGE;
3648 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_UNKNOWN_SUPPLEMENTAL_DATA_TYPE);
3651 /* Authz data length */
3652 n2s(p, authz_data_len);
3654 if (authz_data_len != (unsigned long) n || n < 1)
3656 al = SSL_AD_DECODE_ERROR;
3657 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3660 /* Authz data type: must be audit_proof */
3661 authz_data_type = *(p++);
3663 if (authz_data_type != TLSEXT_AUTHZDATAFORMAT_audit_proof)
3665 al=SSL_AD_UNEXPECTED_MESSAGE;
3666 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_UNKNOWN_AUTHZ_DATA_TYPE);
3669 /* We have a proof: read its length */
3672 al = SSL_AD_DECODE_ERROR;
3673 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3678 if (proof_len != (unsigned long) n)
3680 al = SSL_AD_DECODE_ERROR;
3681 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3684 /* Store the proof */
3685 new_proof = OPENSSL_realloc(s->session->audit_proof,
3687 if (new_proof == NULL)
3689 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,ERR_R_MALLOC_FAILURE);
3692 s->session->audit_proof_length = proof_len;
3693 s->session->audit_proof = new_proof;
3694 memcpy(s->session->audit_proof, p, proof_len);
3696 /* Got the proof, but can't verify it yet. */
3699 ssl3_send_alert(s,SSL3_AL_FATAL,al);