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)
675 unsigned long Time,l;
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)
704 /* Disabling all versions is silly: return an
707 if (options & SSL_OP_NO_DTLSv1)
709 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_WRONG_SSL_VERSION);
712 /* Update method so we don't use any DTLS 1.2
715 s->method = DTLSv1_client_method();
716 s->version = DTLS1_VERSION;
720 /* We only support one version: update method */
721 if (options & SSL_OP_NO_DTLSv1)
722 s->method = DTLSv1_2_client_method();
723 s->version = DTLS1_2_VERSION;
725 s->client_version = s->version;
727 /* else use the pre-loaded session */
729 p=s->s3->client_random;
731 /* for DTLS if client_random is initialized, reuse it, we are
732 * required to use same upon reply to HelloVerify */
737 for (idx=0; idx < sizeof(s->s3->client_random); idx++)
751 Time=(unsigned long)time(NULL); /* Time */
753 RAND_pseudo_bytes(p,sizeof(s->s3->client_random)-4);
757 /* Do the message type and length last */
758 d=p= ssl_handshake_start(s);
760 /* version indicates the negotiated version: for example from
761 * an SSLv2/v3 compatible client hello). The client_version
762 * field is the maximum version we permit and it is also
763 * used in RSA encrypted premaster secrets. Some servers can
764 * choke if we initially report a higher version then
765 * renegotiate to a lower one in the premaster secret. This
766 * didn't happen with TLS 1.0 as most servers supported it
767 * but it can with TLS 1.1 or later if the server only supports
770 * Possible scenario with previous logic:
771 * 1. Client hello indicates TLS 1.2
772 * 2. Server hello says TLS 1.0
773 * 3. RSA encrypted premaster secret uses 1.2.
774 * 4. Handhaked proceeds using TLS 1.0.
775 * 5. Server sends hello request to renegotiate.
776 * 6. Client hello indicates TLS v1.0 as we now
777 * know that is maximum server supports.
778 * 7. Server chokes on RSA encrypted premaster secret
779 * containing version 1.0.
781 * For interoperability it should be OK to always use the
782 * maximum version we support in client hello and then rely
783 * on the checking of version to ensure the servers isn't
784 * being inconsistent: for example initially negotiating with
785 * TLS 1.0 and renegotiating with TLS 1.2. We do this by using
786 * client_version in client hello and not resetting it to
787 * the negotiated version.
790 *(p++)=s->version>>8;
791 *(p++)=s->version&0xff;
792 s->client_version=s->version;
794 *(p++)=s->client_version>>8;
795 *(p++)=s->client_version&0xff;
799 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
806 i=s->session->session_id_length;
810 if (i > (int)sizeof(s->session->session_id))
812 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
815 memcpy(p,s->session->session_id,i);
819 /* cookie stuff for DTLS */
822 if ( s->d1->cookie_len > sizeof(s->d1->cookie))
824 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
827 *(p++) = s->d1->cookie_len;
828 memcpy(p, s->d1->cookie, s->d1->cookie_len);
829 p += s->d1->cookie_len;
832 /* Ciphers supported */
833 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
836 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
839 #ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
840 /* Some servers hang if client hello > 256 bytes
841 * as hack workaround chop number of supported ciphers
842 * to keep it well below this if we use TLS v1.2
844 if (TLS1_get_version(s) >= TLS1_2_VERSION
845 && i > OPENSSL_MAX_TLS1_2_CIPHER_LENGTH)
846 i = OPENSSL_MAX_TLS1_2_CIPHER_LENGTH & ~1;
852 #ifdef OPENSSL_NO_COMP
856 if ((s->options & SSL_OP_NO_COMPRESSION)
857 || !s->ctx->comp_methods)
860 j=sk_SSL_COMP_num(s->ctx->comp_methods);
864 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
868 *(p++)=0; /* Add the NULL method */
870 #ifndef OPENSSL_NO_TLSEXT
872 if (ssl_prepare_clienthello_tlsext(s) <= 0)
874 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
877 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
879 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
885 ssl_set_handshake_header(s, SSL3_MT_CLIENT_HELLO, l);
886 s->state=SSL3_ST_CW_CLNT_HELLO_B;
889 /* SSL3_ST_CW_CLNT_HELLO_B */
890 return ssl_do_write(s);
895 int ssl3_get_server_hello(SSL *s)
897 STACK_OF(SSL_CIPHER) *sk;
901 int i,al=SSL_AD_INTERNAL_ERROR,ok;
904 #ifndef OPENSSL_NO_COMP
907 /* Hello verify request and/or server hello version may not
908 * match so set first packet if we're negotiating version.
910 if (s->method->version == DTLS_ANY_VERSION)
913 n=s->method->ssl_get_message(s,
914 SSL3_ST_CR_SRVR_HELLO_A,
915 SSL3_ST_CR_SRVR_HELLO_B,
920 if (!ok) return((int)n);
925 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
927 if ( s->d1->send_cookie == 0)
929 s->s3->tmp.reuse_message = 1;
932 else /* already sent a cookie */
934 al=SSL_AD_UNEXPECTED_MESSAGE;
935 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
941 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
943 al=SSL_AD_UNEXPECTED_MESSAGE;
944 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
948 d=p=(unsigned char *)s->init_msg;
949 if (s->method->version == DTLS_ANY_VERSION)
951 /* Work out correct protocol version to use */
952 int hversion = (p[0] << 8)|p[1];
953 int options = s->options;
954 if (hversion == DTLS1_2_VERSION
955 && !(options & SSL_OP_NO_DTLSv1_2))
956 s->method = DTLSv1_2_client_method();
957 else if (hversion == DTLS1_VERSION
958 && !(options & SSL_OP_NO_DTLSv1))
959 s->method = DTLSv1_client_method();
961 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
962 s->version = s->client_version = s->method->version;
965 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
967 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
968 s->version=(s->version&0xff00)|p[1];
969 al=SSL_AD_PROTOCOL_VERSION;
974 /* load the server hello data */
975 /* load the server random */
976 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
979 /* get the session-id */
982 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
984 al=SSL_AD_ILLEGAL_PARAMETER;
985 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
989 #ifndef OPENSSL_NO_TLSEXT
990 /* check if we want to resume the session based on external pre-shared secret */
991 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
993 SSL_CIPHER *pref_cipher=NULL;
994 s->session->master_key_length=sizeof(s->session->master_key);
995 if (s->tls_session_secret_cb(s, s->session->master_key,
996 &s->session->master_key_length,
998 s->tls_session_secret_cb_arg))
1000 s->session->cipher = pref_cipher ?
1001 pref_cipher : ssl_get_cipher_by_char(s, p+j);
1004 #endif /* OPENSSL_NO_TLSEXT */
1006 if (j != 0 && j == s->session->session_id_length
1007 && memcmp(p,s->session->session_id,j) == 0)
1009 if(s->sid_ctx_length != s->session->sid_ctx_length
1010 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
1012 /* actually a client application bug */
1013 al=SSL_AD_ILLEGAL_PARAMETER;
1014 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
1019 else /* a miss or crap from the other end */
1021 /* If we were trying for session-id reuse, make a new
1022 * SSL_SESSION so we don't stuff up other people */
1024 if (s->session->session_id_length > 0)
1026 if (!ssl_get_new_session(s,0))
1031 s->session->session_id_length=j;
1032 memcpy(s->session->session_id,p,j); /* j could be 0 */
1035 c=ssl_get_cipher_by_char(s,p);
1038 /* unknown cipher */
1039 al=SSL_AD_ILLEGAL_PARAMETER;
1040 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
1043 /* If it is a disabled cipher we didn't send it in client hello,
1044 * so return an error.
1046 if (c->algorithm_ssl & ct->mask_ssl ||
1047 c->algorithm_mkey & ct->mask_k ||
1048 c->algorithm_auth & ct->mask_a)
1050 al=SSL_AD_ILLEGAL_PARAMETER;
1051 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
1054 p+=ssl_put_cipher_by_char(s,NULL,NULL);
1056 sk=ssl_get_ciphers_by_id(s);
1057 i=sk_SSL_CIPHER_find(sk,c);
1060 /* we did not say we would use this cipher */
1061 al=SSL_AD_ILLEGAL_PARAMETER;
1062 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
1066 /* Depending on the session caching (internal/external), the cipher
1067 and/or cipher_id values may not be set. Make sure that
1068 cipher_id is set and use it for comparison. */
1069 if (s->session->cipher)
1070 s->session->cipher_id = s->session->cipher->id;
1071 if (s->hit && (s->session->cipher_id != c->id))
1073 /* Workaround is now obsolete */
1076 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
1079 al=SSL_AD_ILLEGAL_PARAMETER;
1080 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
1084 s->s3->tmp.new_cipher=c;
1085 /* Don't digest cached records if no sigalgs: we may need them for
1086 * client authentication.
1088 if (!SSL_USE_SIGALGS(s) && !ssl3_digest_cached_records(s))
1090 /* lets get the compression algorithm */
1092 #ifdef OPENSSL_NO_COMP
1095 al=SSL_AD_ILLEGAL_PARAMETER;
1096 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
1099 /* If compression is disabled we'd better not try to resume a session
1100 * using compression.
1102 if (s->session->compress_meth != 0)
1104 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
1109 if (s->hit && j != s->session->compress_meth)
1111 al=SSL_AD_ILLEGAL_PARAMETER;
1112 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
1117 else if (s->options & SSL_OP_NO_COMPRESSION)
1119 al=SSL_AD_ILLEGAL_PARAMETER;
1120 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
1124 comp=ssl3_comp_find(s->ctx->comp_methods,j);
1126 if ((j != 0) && (comp == NULL))
1128 al=SSL_AD_ILLEGAL_PARAMETER;
1129 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
1134 s->s3->tmp.new_compression=comp;
1138 #ifndef OPENSSL_NO_TLSEXT
1140 if (!ssl_parse_serverhello_tlsext(s,&p,d,n))
1142 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
1149 /* wrong packet length */
1150 al=SSL_AD_DECODE_ERROR;
1151 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
1157 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1162 int ssl3_get_server_certificate(SSL *s)
1164 int al,i,ok,ret= -1;
1165 unsigned long n,nc,llen,l;
1167 const unsigned char *q,*p;
1169 STACK_OF(X509) *sk=NULL;
1171 EVP_PKEY *pkey=NULL;
1172 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1174 n=s->method->ssl_get_message(s,
1181 if (!ok) return((int)n);
1183 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1184 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1185 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1187 s->s3->tmp.reuse_message=1;
1191 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1193 al=SSL_AD_UNEXPECTED_MESSAGE;
1194 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1197 p=d=(unsigned char *)s->init_msg;
1199 if ((sk=sk_X509_new_null()) == NULL)
1201 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1208 al=SSL_AD_DECODE_ERROR;
1209 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1212 for (nc=0; nc<llen; )
1215 if ((l+nc+3) > llen)
1217 al=SSL_AD_DECODE_ERROR;
1218 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1223 x=d2i_X509(NULL,&q,l);
1226 al=SSL_AD_BAD_CERTIFICATE;
1227 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1232 al=SSL_AD_DECODE_ERROR;
1233 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1236 if (!sk_X509_push(sk,x))
1238 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1246 i=ssl_verify_cert_chain(s,sk);
1247 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1248 #ifndef OPENSSL_NO_KRB5
1249 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1250 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1251 #endif /* OPENSSL_NO_KRB5 */
1254 al=ssl_verify_alarm_type(s->verify_result);
1255 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1258 ERR_clear_error(); /* but we keep s->verify_result */
1260 sc=ssl_sess_cert_new();
1261 if (sc == NULL) goto err;
1263 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1264 s->session->sess_cert=sc;
1267 /* Inconsistency alert: cert_chain does include the peer's
1268 * certificate, which we don't include in s3_srvr.c */
1269 x=sk_X509_value(sk,0);
1271 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1273 pkey=X509_get_pubkey(x);
1275 /* VRS: allow null cert if auth == KRB5 */
1276 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1277 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1281 printf("pkey,x = %p, %p\n", pkey,x);
1282 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1283 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1284 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1285 #endif /* KSSL_DEBUG */
1287 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1291 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1292 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1296 i=ssl_cert_type(x,pkey);
1297 if (need_cert && i < 0)
1301 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1302 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1308 int exp_idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
1309 if (exp_idx >= 0 && i != exp_idx)
1312 al=SSL_AD_ILLEGAL_PARAMETER;
1313 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1314 SSL_R_WRONG_CERTIFICATE_TYPE);
1317 sc->peer_cert_type=i;
1318 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1319 /* Why would the following ever happen?
1320 * We just created sc a couple of lines ago. */
1321 if (sc->peer_pkeys[i].x509 != NULL)
1322 X509_free(sc->peer_pkeys[i].x509);
1323 sc->peer_pkeys[i].x509=x;
1324 sc->peer_key= &(sc->peer_pkeys[i]);
1326 if (s->session->peer != NULL)
1327 X509_free(s->session->peer);
1328 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1333 sc->peer_cert_type=i;
1336 if (s->session->peer != NULL)
1337 X509_free(s->session->peer);
1338 s->session->peer=NULL;
1340 s->session->verify_result = s->verify_result;
1343 #ifndef OPENSSL_NO_TLSEXT
1344 /* Check the audit proof. */
1345 if (s->ctx->tlsext_authz_server_audit_proof_cb)
1347 ret = s->ctx->tlsext_authz_server_audit_proof_cb(s,
1348 s->ctx->tlsext_authz_server_audit_proof_cb_arg);
1351 al = SSL_AD_BAD_CERTIFICATE;
1352 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_INVALID_AUDIT_PROOF);
1362 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1365 EVP_PKEY_free(pkey);
1367 sk_X509_pop_free(sk,X509_free);
1371 int ssl3_get_key_exchange(SSL *s)
1373 #ifndef OPENSSL_NO_RSA
1374 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1377 unsigned char *param,*p;
1378 int al,i,j,param_len,ok;
1380 EVP_PKEY *pkey=NULL;
1381 const EVP_MD *md = NULL;
1382 #ifndef OPENSSL_NO_RSA
1385 #ifndef OPENSSL_NO_DH
1388 #ifndef OPENSSL_NO_ECDH
1389 EC_KEY *ecdh = NULL;
1390 BN_CTX *bn_ctx = NULL;
1391 EC_POINT *srvr_ecpoint = NULL;
1393 int encoded_pt_len = 0;
1396 /* use same message size as in ssl3_get_certificate_request()
1397 * as ServerKeyExchange message may be skipped */
1398 n=s->method->ssl_get_message(s,
1399 SSL3_ST_CR_KEY_EXCH_A,
1400 SSL3_ST_CR_KEY_EXCH_B,
1404 if (!ok) return((int)n);
1406 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1408 #ifndef OPENSSL_NO_PSK
1409 /* In plain PSK ciphersuite, ServerKeyExchange can be
1410 omitted if no identity hint is sent. Set
1411 session->sess_cert anyway to avoid problems
1413 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1415 s->session->sess_cert=ssl_sess_cert_new();
1416 if (s->ctx->psk_identity_hint)
1417 OPENSSL_free(s->ctx->psk_identity_hint);
1418 s->ctx->psk_identity_hint = NULL;
1421 s->s3->tmp.reuse_message=1;
1425 param=p=(unsigned char *)s->init_msg;
1426 if (s->session->sess_cert != NULL)
1428 #ifndef OPENSSL_NO_RSA
1429 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1431 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1432 s->session->sess_cert->peer_rsa_tmp=NULL;
1435 #ifndef OPENSSL_NO_DH
1436 if (s->session->sess_cert->peer_dh_tmp)
1438 DH_free(s->session->sess_cert->peer_dh_tmp);
1439 s->session->sess_cert->peer_dh_tmp=NULL;
1442 #ifndef OPENSSL_NO_ECDH
1443 if (s->session->sess_cert->peer_ecdh_tmp)
1445 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1446 s->session->sess_cert->peer_ecdh_tmp=NULL;
1452 s->session->sess_cert=ssl_sess_cert_new();
1456 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1457 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1458 EVP_MD_CTX_init(&md_ctx);
1460 #ifndef OPENSSL_NO_PSK
1461 if (alg_k & SSL_kPSK)
1463 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1465 al=SSL_AD_HANDSHAKE_FAILURE;
1468 /* Store PSK identity hint for later use, hint is used
1469 * in ssl3_send_client_key_exchange. Assume that the
1470 * maximum length of a PSK identity hint can be as
1471 * long as the maximum length of a PSK identity. */
1472 if (i > PSK_MAX_IDENTITY_LEN)
1474 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1475 SSL_R_DATA_LENGTH_TOO_LONG);
1480 al=SSL_AD_DECODE_ERROR;
1481 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1482 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1485 /* If received PSK identity hint contains NULL
1486 * characters, the hint is truncated from the first
1487 * NULL. p may not be ending with NULL, so create a
1488 * NULL-terminated string. */
1489 memcpy(tmp_id_hint, p, i);
1490 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1491 if (s->ctx->psk_identity_hint != NULL)
1492 OPENSSL_free(s->ctx->psk_identity_hint);
1493 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1494 if (s->ctx->psk_identity_hint == NULL)
1496 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1504 #endif /* !OPENSSL_NO_PSK */
1505 #ifndef OPENSSL_NO_SRP
1506 if (alg_k & SSL_kSRP)
1512 al=SSL_AD_DECODE_ERROR;
1513 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1516 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1518 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1527 al=SSL_AD_DECODE_ERROR;
1528 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1531 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1533 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1538 i = (unsigned int)(p[0]);
1543 al=SSL_AD_DECODE_ERROR;
1544 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1547 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1549 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1558 al=SSL_AD_DECODE_ERROR;
1559 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1562 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1564 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1570 /* We must check if there is a certificate */
1571 #ifndef OPENSSL_NO_RSA
1572 if (alg_a & SSL_aRSA)
1573 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1578 #ifndef OPENSSL_NO_DSA
1579 else if (alg_a & SSL_aDSS)
1580 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1584 #endif /* !OPENSSL_NO_SRP */
1585 #ifndef OPENSSL_NO_RSA
1586 if (alg_k & SSL_kRSA)
1588 if ((rsa=RSA_new()) == NULL)
1590 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1597 al=SSL_AD_DECODE_ERROR;
1598 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1601 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1603 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1612 al=SSL_AD_DECODE_ERROR;
1613 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1616 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1618 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1624 /* this should be because we are using an export cipher */
1625 if (alg_a & SSL_aRSA)
1626 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1629 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1632 s->session->sess_cert->peer_rsa_tmp=rsa;
1635 #else /* OPENSSL_NO_RSA */
1639 #ifndef OPENSSL_NO_DH
1640 else if (alg_k & SSL_kEDH)
1642 if ((dh=DH_new()) == NULL)
1644 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1651 al=SSL_AD_DECODE_ERROR;
1652 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1655 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1657 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1666 al=SSL_AD_DECODE_ERROR;
1667 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1670 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1672 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1681 al=SSL_AD_DECODE_ERROR;
1682 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1685 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1687 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1693 #ifndef OPENSSL_NO_RSA
1694 if (alg_a & SSL_aRSA)
1695 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1700 #ifndef OPENSSL_NO_DSA
1701 else if (alg_a & SSL_aDSS)
1702 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1704 /* else anonymous DH, so no certificate or pkey. */
1706 s->session->sess_cert->peer_dh_tmp=dh;
1709 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1711 al=SSL_AD_ILLEGAL_PARAMETER;
1712 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1715 #endif /* !OPENSSL_NO_DH */
1717 #ifndef OPENSSL_NO_ECDH
1718 else if (alg_k & SSL_kEECDH)
1721 const EC_GROUP *group;
1723 if ((ecdh=EC_KEY_new()) == NULL)
1725 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1729 /* Extract elliptic curve parameters and the
1730 * server's ephemeral ECDH public key.
1731 * Keep accumulating lengths of various components in
1732 * param_len and make sure it never exceeds n.
1735 /* XXX: For now we only support named (not generic) curves
1736 * and the ECParameters in this case is just three bytes.
1739 /* Check curve is one of our prefrences, if not server has
1740 * sent an invalid curve.
1742 if (!tls1_check_curve(s, p, param_len))
1744 al=SSL_AD_DECODE_ERROR;
1745 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_CURVE);
1749 if ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0)
1751 al=SSL_AD_INTERNAL_ERROR;
1752 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1756 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1759 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1762 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1764 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1767 EC_GROUP_free(ngroup);
1769 group = EC_KEY_get0_group(ecdh);
1771 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1772 (EC_GROUP_get_degree(group) > 163))
1774 al=SSL_AD_EXPORT_RESTRICTION;
1775 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1781 /* Next, get the encoded ECPoint */
1782 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1783 ((bn_ctx = BN_CTX_new()) == NULL))
1785 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1789 encoded_pt_len = *p; /* length of encoded point */
1791 param_len += (1 + encoded_pt_len);
1792 if ((param_len > n) ||
1793 (EC_POINT_oct2point(group, srvr_ecpoint,
1794 p, encoded_pt_len, bn_ctx) == 0))
1796 al=SSL_AD_DECODE_ERROR;
1797 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1804 /* The ECC/TLS specification does not mention
1805 * the use of DSA to sign ECParameters in the server
1806 * key exchange message. We do support RSA and ECDSA.
1809 #ifndef OPENSSL_NO_RSA
1810 else if (alg_a & SSL_aRSA)
1811 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1813 #ifndef OPENSSL_NO_ECDSA
1814 else if (alg_a & SSL_aECDSA)
1815 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1817 /* else anonymous ECDH, so no certificate or pkey. */
1818 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1819 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1821 BN_CTX_free(bn_ctx);
1823 EC_POINT_free(srvr_ecpoint);
1824 srvr_ecpoint = NULL;
1828 al=SSL_AD_UNEXPECTED_MESSAGE;
1829 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1832 #endif /* !OPENSSL_NO_ECDH */
1835 /* p points to the next byte, there are 'n' bytes left */
1837 /* if it was signed, check the signature */
1840 if (SSL_USE_SIGALGS(s))
1842 int rv = tls12_check_peer_sigalg(&md, s, p, pkey);
1847 al = SSL_AD_DECODE_ERROR;
1851 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1861 j=EVP_PKEY_size(pkey);
1863 if ((i != n) || (n > j) || (n <= 0))
1865 /* wrong packet length */
1866 al=SSL_AD_DECODE_ERROR;
1867 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1871 #ifndef OPENSSL_NO_RSA
1872 if (pkey->type == EVP_PKEY_RSA && !SSL_USE_SIGALGS(s))
1878 for (num=2; num > 0; num--)
1880 EVP_MD_CTX_set_flags(&md_ctx,
1881 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1882 EVP_DigestInit_ex(&md_ctx,(num == 2)
1883 ?s->ctx->md5:s->ctx->sha1, NULL);
1884 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1885 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1886 EVP_DigestUpdate(&md_ctx,param,param_len);
1887 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1891 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1895 al=SSL_AD_DECRYPT_ERROR;
1896 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1902 al=SSL_AD_DECRYPT_ERROR;
1903 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1910 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1911 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1912 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1913 EVP_VerifyUpdate(&md_ctx,param,param_len);
1914 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1917 al=SSL_AD_DECRYPT_ERROR;
1918 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1925 /* aNULL or kPSK do not need public keys */
1926 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1928 /* Might be wrong key type, check it */
1929 if (ssl3_check_cert_and_algorithm(s))
1930 /* Otherwise this shouldn't happen */
1931 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1934 /* still data left over */
1937 al=SSL_AD_DECODE_ERROR;
1938 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1942 EVP_PKEY_free(pkey);
1943 EVP_MD_CTX_cleanup(&md_ctx);
1946 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1948 EVP_PKEY_free(pkey);
1949 #ifndef OPENSSL_NO_RSA
1953 #ifndef OPENSSL_NO_DH
1957 #ifndef OPENSSL_NO_ECDH
1958 BN_CTX_free(bn_ctx);
1959 EC_POINT_free(srvr_ecpoint);
1963 EVP_MD_CTX_cleanup(&md_ctx);
1967 int ssl3_get_certificate_request(SSL *s)
1970 unsigned long n,nc,l;
1971 unsigned int llen, ctype_num,i;
1973 const unsigned char *p,*q;
1975 STACK_OF(X509_NAME) *ca_sk=NULL;
1977 n=s->method->ssl_get_message(s,
1978 SSL3_ST_CR_CERT_REQ_A,
1979 SSL3_ST_CR_CERT_REQ_B,
1984 if (!ok) return((int)n);
1986 s->s3->tmp.cert_req=0;
1988 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1990 s->s3->tmp.reuse_message=1;
1991 /* If we get here we don't need any cached handshake records
1992 * as we wont be doing client auth.
1994 if (s->s3->handshake_buffer)
1996 if (!ssl3_digest_cached_records(s))
2002 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
2004 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2005 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
2009 /* TLS does not like anon-DH with client cert */
2010 if (s->version > SSL3_VERSION)
2012 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
2014 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2015 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
2020 p=d=(unsigned char *)s->init_msg;
2022 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
2024 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
2028 /* get the certificate types */
2030 if (s->cert->ctypes)
2032 OPENSSL_free(s->cert->ctypes);
2033 s->cert->ctypes = NULL;
2035 if (ctype_num > SSL3_CT_NUMBER)
2037 /* If we exceed static buffer copy all to cert structure */
2038 s->cert->ctypes = OPENSSL_malloc(ctype_num);
2039 memcpy(s->cert->ctypes, p, ctype_num);
2040 s->cert->ctype_num = (size_t)ctype_num;
2041 ctype_num=SSL3_CT_NUMBER;
2043 for (i=0; i<ctype_num; i++)
2044 s->s3->tmp.ctype[i]= p[i];
2046 if (SSL_USE_SIGALGS(s))
2049 /* Check we have enough room for signature algorithms and
2050 * following length value.
2052 if ((unsigned long)(p - d + llen + 2) > n)
2054 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2055 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
2058 /* Clear certificate digests and validity flags */
2059 for (i = 0; i < SSL_PKEY_NUM; i++)
2061 s->cert->pkeys[i].digest = NULL;
2062 s->cert->pkeys[i].valid_flags = 0;
2064 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
2066 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2067 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
2073 /* get the CA RDNs */
2078 out=fopen("/tmp/vsign.der","w");
2079 fwrite(p,1,llen,out);
2084 if ((unsigned long)(p - d + llen) != n)
2086 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2087 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
2091 for (nc=0; nc<llen; )
2094 if ((l+nc+2) > llen)
2096 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
2097 goto cont; /* netscape bugs */
2098 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2099 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
2105 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
2107 /* If netscape tolerance is on, ignore errors */
2108 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
2112 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2113 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
2120 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2121 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
2124 if (!sk_X509_NAME_push(ca_sk,xn))
2126 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
2140 /* we should setup a certificate to return.... */
2141 s->s3->tmp.cert_req=1;
2142 s->s3->tmp.ctype_num=ctype_num;
2143 if (s->s3->tmp.ca_names != NULL)
2144 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
2145 s->s3->tmp.ca_names=ca_sk;
2150 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
2154 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
2156 return(X509_NAME_cmp(*a,*b));
2158 #ifndef OPENSSL_NO_TLSEXT
2159 int ssl3_get_new_session_ticket(SSL *s)
2161 int ok,al,ret=0, ticklen;
2163 const unsigned char *p;
2166 n=s->method->ssl_get_message(s,
2167 SSL3_ST_CR_SESSION_TICKET_A,
2168 SSL3_ST_CR_SESSION_TICKET_B,
2176 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
2178 s->s3->tmp.reuse_message=1;
2181 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
2183 al=SSL_AD_UNEXPECTED_MESSAGE;
2184 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
2189 /* need at least ticket_lifetime_hint + ticket length */
2190 al = SSL_AD_DECODE_ERROR;
2191 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2195 p=d=(unsigned char *)s->init_msg;
2196 n2l(p, s->session->tlsext_tick_lifetime_hint);
2198 /* ticket_lifetime_hint + ticket_length + ticket */
2199 if (ticklen + 6 != n)
2201 al = SSL_AD_DECODE_ERROR;
2202 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2205 if (s->session->tlsext_tick)
2207 OPENSSL_free(s->session->tlsext_tick);
2208 s->session->tlsext_ticklen = 0;
2210 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2211 if (!s->session->tlsext_tick)
2213 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2216 memcpy(s->session->tlsext_tick, p, ticklen);
2217 s->session->tlsext_ticklen = ticklen;
2218 /* There are two ways to detect a resumed ticket sesion.
2219 * One is to set an appropriate session ID and then the server
2220 * must return a match in ServerHello. This allows the normal
2221 * client session ID matching to work and we know much
2222 * earlier that the ticket has been accepted.
2224 * The other way is to set zero length session ID when the
2225 * ticket is presented and rely on the handshake to determine
2226 * session resumption.
2228 * We choose the former approach because this fits in with
2229 * assumptions elsewhere in OpenSSL. The session ID is set
2230 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2233 EVP_Digest(p, ticklen,
2234 s->session->session_id, &s->session->session_id_length,
2235 #ifndef OPENSSL_NO_SHA256
2236 EVP_sha256(), NULL);
2243 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2248 int ssl3_get_cert_status(SSL *s)
2251 unsigned long resplen,n;
2252 const unsigned char *p;
2254 n=s->method->ssl_get_message(s,
2255 SSL3_ST_CR_CERT_STATUS_A,
2256 SSL3_ST_CR_CERT_STATUS_B,
2257 SSL3_MT_CERTIFICATE_STATUS,
2261 if (!ok) return((int)n);
2264 /* need at least status type + length */
2265 al = SSL_AD_DECODE_ERROR;
2266 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2269 p = (unsigned char *)s->init_msg;
2270 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2272 al = SSL_AD_DECODE_ERROR;
2273 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2277 if (resplen + 4 != n)
2279 al = SSL_AD_DECODE_ERROR;
2280 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2283 if (s->tlsext_ocsp_resp)
2284 OPENSSL_free(s->tlsext_ocsp_resp);
2285 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2286 if (!s->tlsext_ocsp_resp)
2288 al = SSL_AD_INTERNAL_ERROR;
2289 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2292 s->tlsext_ocsp_resplen = resplen;
2293 if (s->ctx->tlsext_status_cb)
2296 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2299 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2300 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2305 al = SSL_AD_INTERNAL_ERROR;
2306 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2312 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2317 int ssl3_get_server_done(SSL *s)
2322 n=s->method->ssl_get_message(s,
2323 SSL3_ST_CR_SRVR_DONE_A,
2324 SSL3_ST_CR_SRVR_DONE_B,
2325 SSL3_MT_SERVER_DONE,
2326 30, /* should be very small, like 0 :-) */
2329 if (!ok) return((int)n);
2332 /* should contain no data */
2333 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2334 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2342 int ssl3_send_client_key_exchange(SSL *s)
2346 unsigned long alg_k;
2347 #ifndef OPENSSL_NO_RSA
2349 EVP_PKEY *pkey=NULL;
2351 #ifndef OPENSSL_NO_KRB5
2353 #endif /* OPENSSL_NO_KRB5 */
2354 #ifndef OPENSSL_NO_ECDH
2355 EC_KEY *clnt_ecdh = NULL;
2356 const EC_POINT *srvr_ecpoint = NULL;
2357 EVP_PKEY *srvr_pub_pkey = NULL;
2358 unsigned char *encodedPoint = NULL;
2359 int encoded_pt_len = 0;
2360 BN_CTX * bn_ctx = NULL;
2363 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2365 p = ssl_handshake_start(s);
2367 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2369 /* Fool emacs indentation */
2371 #ifndef OPENSSL_NO_RSA
2372 else if (alg_k & SSL_kRSA)
2375 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2377 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2378 rsa=s->session->sess_cert->peer_rsa_tmp;
2381 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2382 if ((pkey == NULL) ||
2383 (pkey->type != EVP_PKEY_RSA) ||
2384 (pkey->pkey.rsa == NULL))
2386 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2390 EVP_PKEY_free(pkey);
2393 tmp_buf[0]=s->client_version>>8;
2394 tmp_buf[1]=s->client_version&0xff;
2395 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2398 s->session->master_key_length=sizeof tmp_buf;
2401 /* Fix buf for TLS and beyond */
2402 if (s->version > SSL3_VERSION)
2404 n=RSA_public_encrypt(sizeof tmp_buf,
2405 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2407 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2408 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2412 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2416 /* Fix buf for TLS and beyond */
2417 if (s->version > SSL3_VERSION)
2423 s->session->master_key_length=
2424 s->method->ssl3_enc->generate_master_secret(s,
2425 s->session->master_key,
2426 tmp_buf,sizeof tmp_buf);
2427 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2430 #ifndef OPENSSL_NO_KRB5
2431 else if (alg_k & SSL_kKRB5)
2433 krb5_error_code krb5rc;
2434 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2435 /* krb5_data krb5_ap_req; */
2436 krb5_data *enc_ticket;
2437 krb5_data authenticator, *authp = NULL;
2438 EVP_CIPHER_CTX ciph_ctx;
2439 const EVP_CIPHER *enc = NULL;
2440 unsigned char iv[EVP_MAX_IV_LENGTH];
2441 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2442 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2443 + EVP_MAX_IV_LENGTH];
2444 int padl, outl = sizeof(epms);
2446 EVP_CIPHER_CTX_init(&ciph_ctx);
2449 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2451 #endif /* KSSL_DEBUG */
2455 if (KRB5SENDAUTH) authp = &authenticator;
2456 #endif /* KRB5SENDAUTH */
2458 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2460 enc = kssl_map_enc(kssl_ctx->enctype);
2465 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2466 if (krb5rc && kssl_err.text)
2467 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2469 #endif /* KSSL_DEBUG */
2473 ssl3_send_alert(s,SSL3_AL_FATAL,
2474 SSL_AD_HANDSHAKE_FAILURE);
2475 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2480 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2481 ** in place of RFC 2712 KerberosWrapper, as in:
2483 ** Send ticket (copy to *p, set n = length)
2484 ** n = krb5_ap_req.length;
2485 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2486 ** if (krb5_ap_req.data)
2487 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2489 ** Now using real RFC 2712 KerberosWrapper
2490 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2491 ** Note: 2712 "opaque" types are here replaced
2492 ** with a 2-byte length followed by the value.
2494 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2495 ** Where "xx xx" = length bytes. Shown here with
2496 ** optional authenticator omitted.
2499 /* KerberosWrapper.Ticket */
2500 s2n(enc_ticket->length,p);
2501 memcpy(p, enc_ticket->data, enc_ticket->length);
2502 p+= enc_ticket->length;
2503 n = enc_ticket->length + 2;
2505 /* KerberosWrapper.Authenticator */
2506 if (authp && authp->length)
2508 s2n(authp->length,p);
2509 memcpy(p, authp->data, authp->length);
2511 n+= authp->length + 2;
2519 s2n(0,p);/* null authenticator length */
2523 tmp_buf[0]=s->client_version>>8;
2524 tmp_buf[1]=s->client_version&0xff;
2525 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2528 /* 20010420 VRS. Tried it this way; failed.
2529 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2530 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2531 ** kssl_ctx->length);
2532 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2535 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2536 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2538 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2540 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2542 if (outl > (int)sizeof epms)
2544 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2547 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2549 /* KerberosWrapper.EncryptedPreMasterSecret */
2551 memcpy(p, epms, outl);
2555 s->session->master_key_length=
2556 s->method->ssl3_enc->generate_master_secret(s,
2557 s->session->master_key,
2558 tmp_buf, sizeof tmp_buf);
2560 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2561 OPENSSL_cleanse(epms, outl);
2564 #ifndef OPENSSL_NO_DH
2565 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2567 DH *dh_srvr,*dh_clnt;
2568 SESS_CERT *scert = s->session->sess_cert;
2572 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2573 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2577 if (scert->peer_dh_tmp != NULL)
2578 dh_srvr=scert->peer_dh_tmp;
2581 /* we get them from the cert */
2582 int idx = scert->peer_cert_type;
2583 EVP_PKEY *spkey = NULL;
2586 spkey = X509_get_pubkey(
2587 scert->peer_pkeys[idx].x509);
2590 dh_srvr = EVP_PKEY_get1_DH(spkey);
2591 EVP_PKEY_free(spkey);
2593 if (dh_srvr == NULL)
2595 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2596 ERR_R_INTERNAL_ERROR);
2600 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
2602 /* Use client certificate key */
2603 EVP_PKEY *clkey = s->cert->key->privatekey;
2606 dh_clnt = EVP_PKEY_get1_DH(clkey);
2607 if (dh_clnt == NULL)
2609 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2610 ERR_R_INTERNAL_ERROR);
2616 /* generate a new random key */
2617 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2619 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2622 if (!DH_generate_key(dh_clnt))
2624 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2630 /* use the 'p' output buffer for the DH key, but
2631 * make sure to clear it out afterwards */
2633 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2634 if (scert->peer_dh_tmp == NULL)
2639 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2644 /* generate master key from the result */
2645 s->session->master_key_length=
2646 s->method->ssl3_enc->generate_master_secret(s,
2647 s->session->master_key,p,n);
2651 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
2655 /* send off the data */
2656 n=BN_num_bytes(dh_clnt->pub_key);
2658 BN_bn2bin(dh_clnt->pub_key,p);
2664 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2668 #ifndef OPENSSL_NO_ECDH
2669 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2671 const EC_GROUP *srvr_group = NULL;
2673 int ecdh_clnt_cert = 0;
2676 /* Did we send out the client's
2677 * ECDH share for use in premaster
2678 * computation as part of client certificate?
2679 * If so, set ecdh_clnt_cert to 1.
2681 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2683 /* XXX: For now, we do not support client
2684 * authentication using ECDH certificates.
2685 * To add such support, one needs to add
2686 * code that checks for appropriate
2687 * conditions and sets ecdh_clnt_cert to 1.
2688 * For example, the cert have an ECC
2689 * key on the same curve as the server's
2690 * and the key should be authorized for
2693 * One also needs to add code in ssl3_connect
2694 * to skip sending the certificate verify
2697 * if ((s->cert->key->privatekey != NULL) &&
2698 * (s->cert->key->privatekey->type ==
2699 * EVP_PKEY_EC) && ...)
2700 * ecdh_clnt_cert = 1;
2704 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2706 tkey = s->session->sess_cert->peer_ecdh_tmp;
2710 /* Get the Server Public Key from Cert */
2711 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2712 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2713 if ((srvr_pub_pkey == NULL) ||
2714 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2715 (srvr_pub_pkey->pkey.ec == NULL))
2717 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2718 ERR_R_INTERNAL_ERROR);
2722 tkey = srvr_pub_pkey->pkey.ec;
2725 srvr_group = EC_KEY_get0_group(tkey);
2726 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2728 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2730 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2731 ERR_R_INTERNAL_ERROR);
2735 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2737 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2741 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2743 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2748 /* Reuse key info from our certificate
2749 * We only need our private key to perform
2750 * the ECDH computation.
2752 const BIGNUM *priv_key;
2753 tkey = s->cert->key->privatekey->pkey.ec;
2754 priv_key = EC_KEY_get0_private_key(tkey);
2755 if (priv_key == NULL)
2757 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2760 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2762 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2768 /* Generate a new ECDH key pair */
2769 if (!(EC_KEY_generate_key(clnt_ecdh)))
2771 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2776 /* use the 'p' output buffer for the ECDH key, but
2777 * make sure to clear it out afterwards
2780 field_size = EC_GROUP_get_degree(srvr_group);
2781 if (field_size <= 0)
2783 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2787 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2790 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2795 /* generate master key from the result */
2796 s->session->master_key_length = s->method->ssl3_enc \
2797 -> generate_master_secret(s,
2798 s->session->master_key,
2801 memset(p, 0, n); /* clean up */
2805 /* Send empty client key exch message */
2810 /* First check the size of encoding and
2811 * allocate memory accordingly.
2814 EC_POINT_point2oct(srvr_group,
2815 EC_KEY_get0_public_key(clnt_ecdh),
2816 POINT_CONVERSION_UNCOMPRESSED,
2819 encodedPoint = (unsigned char *)
2820 OPENSSL_malloc(encoded_pt_len *
2821 sizeof(unsigned char));
2822 bn_ctx = BN_CTX_new();
2823 if ((encodedPoint == NULL) ||
2826 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2830 /* Encode the public key */
2831 n = EC_POINT_point2oct(srvr_group,
2832 EC_KEY_get0_public_key(clnt_ecdh),
2833 POINT_CONVERSION_UNCOMPRESSED,
2834 encodedPoint, encoded_pt_len, bn_ctx);
2836 *p = n; /* length of encoded point */
2837 /* Encoded point will be copied here */
2839 /* copy the point */
2840 memcpy((unsigned char *)p, encodedPoint, n);
2841 /* increment n to account for length field */
2845 /* Free allocated memory */
2846 BN_CTX_free(bn_ctx);
2847 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2848 if (clnt_ecdh != NULL)
2849 EC_KEY_free(clnt_ecdh);
2850 EVP_PKEY_free(srvr_pub_pkey);
2852 #endif /* !OPENSSL_NO_ECDH */
2853 else if (alg_k & SSL_kGOST)
2855 /* GOST key exchange message creation */
2856 EVP_PKEY_CTX *pkey_ctx;
2859 unsigned int md_len;
2861 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2862 EVP_MD_CTX *ukm_hash;
2865 /* Get server sertificate PKEY and create ctx from it */
2866 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2868 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2870 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2874 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2875 /* If we have send a certificate, and certificate key
2877 * parameters match those of server certificate, use
2878 * certificate key for key exchange
2881 /* Otherwise, generate ephemeral key pair */
2883 EVP_PKEY_encrypt_init(pkey_ctx);
2884 /* Generate session key */
2885 RAND_bytes(premaster_secret,32);
2886 /* If we have client certificate, use its secret as peer key */
2887 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2888 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2889 /* If there was an error - just ignore it. Ephemeral key
2895 /* Compute shared IV and store it in algorithm-specific
2897 ukm_hash = EVP_MD_CTX_create();
2898 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2899 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2900 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2901 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2902 EVP_MD_CTX_destroy(ukm_hash);
2903 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2905 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2909 /* Make GOST keytransport blob message */
2910 /*Encapsulate it into sequence */
2911 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2913 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2914 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2921 *(p++)= msglen & 0xff;
2926 *(p++)= msglen & 0xff;
2929 memcpy(p, tmp, msglen);
2930 /* Check if pubkey from client certificate was used */
2931 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2933 /* Set flag "skip certificate verify" */
2934 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2936 EVP_PKEY_CTX_free(pkey_ctx);
2937 s->session->master_key_length=
2938 s->method->ssl3_enc->generate_master_secret(s,
2939 s->session->master_key,premaster_secret,32);
2940 EVP_PKEY_free(pub_key);
2943 #ifndef OPENSSL_NO_SRP
2944 else if (alg_k & SSL_kSRP)
2946 if (s->srp_ctx.A != NULL)
2948 /* send off the data */
2949 n=BN_num_bytes(s->srp_ctx.A);
2951 BN_bn2bin(s->srp_ctx.A,p);
2956 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2959 if (s->session->srp_username != NULL)
2960 OPENSSL_free(s->session->srp_username);
2961 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2962 if (s->session->srp_username == NULL)
2964 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2965 ERR_R_MALLOC_FAILURE);
2969 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2971 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2976 #ifndef OPENSSL_NO_PSK
2977 else if (alg_k & SSL_kPSK)
2979 char identity[PSK_MAX_IDENTITY_LEN];
2980 unsigned char *t = NULL;
2981 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2982 unsigned int pre_ms_len = 0, psk_len = 0;
2986 if (s->psk_client_callback == NULL)
2988 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2989 SSL_R_PSK_NO_CLIENT_CB);
2993 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2994 identity, PSK_MAX_IDENTITY_LEN,
2995 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2996 if (psk_len > PSK_MAX_PSK_LEN)
2998 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2999 ERR_R_INTERNAL_ERROR);
3002 else if (psk_len == 0)
3004 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3005 SSL_R_PSK_IDENTITY_NOT_FOUND);
3009 /* create PSK pre_master_secret */
3010 pre_ms_len = 2+psk_len+2+psk_len;
3012 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
3014 memset(t, 0, psk_len);
3018 if (s->session->psk_identity_hint != NULL)
3019 OPENSSL_free(s->session->psk_identity_hint);
3020 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
3021 if (s->ctx->psk_identity_hint != NULL &&
3022 s->session->psk_identity_hint == NULL)
3024 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3025 ERR_R_MALLOC_FAILURE);
3029 if (s->session->psk_identity != NULL)
3030 OPENSSL_free(s->session->psk_identity);
3031 s->session->psk_identity = BUF_strdup(identity);
3032 if (s->session->psk_identity == NULL)
3034 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3035 ERR_R_MALLOC_FAILURE);
3039 s->session->master_key_length =
3040 s->method->ssl3_enc->generate_master_secret(s,
3041 s->session->master_key,
3042 psk_or_pre_ms, pre_ms_len);
3043 n = strlen(identity);
3045 memcpy(p, identity, n);
3049 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
3050 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
3053 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
3060 ssl3_send_alert(s, SSL3_AL_FATAL,
3061 SSL_AD_HANDSHAKE_FAILURE);
3062 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3063 ERR_R_INTERNAL_ERROR);
3067 ssl_set_handshake_header(s, SSL3_MT_CLIENT_KEY_EXCHANGE, n);
3068 s->state=SSL3_ST_CW_KEY_EXCH_B;
3071 /* SSL3_ST_CW_KEY_EXCH_B */
3072 return ssl_do_write(s);
3074 #ifndef OPENSSL_NO_ECDH
3075 BN_CTX_free(bn_ctx);
3076 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
3077 if (clnt_ecdh != NULL)
3078 EC_KEY_free(clnt_ecdh);
3079 EVP_PKEY_free(srvr_pub_pkey);
3084 int ssl3_send_client_verify(SSL *s)
3087 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
3089 EVP_PKEY_CTX *pctx=NULL;
3095 EVP_MD_CTX_init(&mctx);
3097 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
3099 p= ssl_handshake_start(s);
3100 pkey=s->cert->key->privatekey;
3101 /* Create context from key and test if sha1 is allowed as digest */
3102 pctx = EVP_PKEY_CTX_new(pkey,NULL);
3103 EVP_PKEY_sign_init(pctx);
3104 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
3106 if (!SSL_USE_SIGALGS(s))
3107 s->method->ssl3_enc->cert_verify_mac(s,
3109 &(data[MD5_DIGEST_LENGTH]));
3115 /* For TLS v1.2 send signature algorithm and signature
3116 * using agreed digest and cached handshake records.
3118 if (SSL_USE_SIGALGS(s))
3122 const EVP_MD *md = s->cert->key->digest;
3123 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
3125 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
3127 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3128 ERR_R_INTERNAL_ERROR);
3133 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
3136 if (!EVP_SignInit_ex(&mctx, md, NULL)
3137 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
3138 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
3140 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3146 if (!ssl3_digest_cached_records(s))
3150 #ifndef OPENSSL_NO_RSA
3151 if (pkey->type == EVP_PKEY_RSA)
3153 s->method->ssl3_enc->cert_verify_mac(s,
3156 if (RSA_sign(NID_md5_sha1, data,
3157 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
3158 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
3160 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
3168 #ifndef OPENSSL_NO_DSA
3169 if (pkey->type == EVP_PKEY_DSA)
3171 if (!DSA_sign(pkey->save_type,
3172 &(data[MD5_DIGEST_LENGTH]),
3173 SHA_DIGEST_LENGTH,&(p[2]),
3174 (unsigned int *)&j,pkey->pkey.dsa))
3176 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
3184 #ifndef OPENSSL_NO_ECDSA
3185 if (pkey->type == EVP_PKEY_EC)
3187 if (!ECDSA_sign(pkey->save_type,
3188 &(data[MD5_DIGEST_LENGTH]),
3189 SHA_DIGEST_LENGTH,&(p[2]),
3190 (unsigned int *)&j,pkey->pkey.ec))
3192 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3201 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
3203 unsigned char signbuf[64];
3206 s->method->ssl3_enc->cert_verify_mac(s,
3207 NID_id_GostR3411_94,
3209 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
3210 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3211 ERR_R_INTERNAL_ERROR);
3214 for (i=63,j=0; i>=0; j++, i--) {
3222 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
3225 ssl_set_handshake_header(s, SSL3_MT_CERTIFICATE_VERIFY, n);
3226 s->state=SSL3_ST_CW_CERT_VRFY_B;
3228 EVP_MD_CTX_cleanup(&mctx);
3229 EVP_PKEY_CTX_free(pctx);
3230 return ssl_do_write(s);
3232 EVP_MD_CTX_cleanup(&mctx);
3233 EVP_PKEY_CTX_free(pctx);
3237 /* Check a certificate can be used for client authentication. Currently
3238 * check cert exists, if we have a suitable digest for TLS 1.2 if
3239 * static DH client certificates can be used and optionally checks
3240 * suitability for Suite B.
3242 static int ssl3_check_client_certificate(SSL *s)
3244 unsigned long alg_k;
3245 if (!s->cert || !s->cert->key->x509 || !s->cert->key->privatekey)
3247 /* If no suitable signature algorithm can't use certificate */
3248 if (SSL_USE_SIGALGS(s) && !s->cert->key->digest)
3250 /* If strict mode check suitability of chain before using it.
3251 * This also adjusts suite B digest if necessary.
3253 if (s->cert->cert_flags & SSL_CERT_FLAGS_CHECK_TLS_STRICT &&
3254 !tls1_check_chain(s, NULL, NULL, NULL, -2))
3256 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3257 /* See if we can use client certificate for fixed DH */
3258 if (alg_k & (SSL_kDHr|SSL_kDHd))
3260 SESS_CERT *scert = s->session->sess_cert;
3261 int i = scert->peer_cert_type;
3262 EVP_PKEY *clkey = NULL, *spkey = NULL;
3263 clkey = s->cert->key->privatekey;
3264 /* If client key not DH assume it can be used */
3265 if (EVP_PKEY_id(clkey) != EVP_PKEY_DH)
3268 spkey = X509_get_pubkey(scert->peer_pkeys[i].x509);
3271 /* Compare server and client parameters */
3272 i = EVP_PKEY_cmp_parameters(clkey, spkey);
3273 EVP_PKEY_free(spkey);
3277 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
3282 int ssl3_send_client_certificate(SSL *s)
3285 EVP_PKEY *pkey=NULL;
3288 if (s->state == SSL3_ST_CW_CERT_A)
3290 /* Let cert callback update client certificates if required */
3291 if (s->cert->cert_cb
3292 && s->cert->cert_cb(s, s->cert->cert_cb_arg) <= 0)
3294 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
3297 if (ssl3_check_client_certificate(s))
3298 s->state=SSL3_ST_CW_CERT_C;
3300 s->state=SSL3_ST_CW_CERT_B;
3303 /* We need to get a client cert */
3304 if (s->state == SSL3_ST_CW_CERT_B)
3306 /* If we get an error, we need to
3307 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3308 * We then get retied later */
3310 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3313 s->rwstate=SSL_X509_LOOKUP;
3316 s->rwstate=SSL_NOTHING;
3317 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3319 s->state=SSL3_ST_CW_CERT_B;
3320 if ( !SSL_use_certificate(s,x509) ||
3321 !SSL_use_PrivateKey(s,pkey))
3327 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3330 if (x509 != NULL) X509_free(x509);
3331 if (pkey != NULL) EVP_PKEY_free(pkey);
3332 if (i && !ssl3_check_client_certificate(s))
3336 if (s->version == SSL3_VERSION)
3338 s->s3->tmp.cert_req=0;
3339 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3344 s->s3->tmp.cert_req=2;
3348 /* Ok, we have a cert */
3349 s->state=SSL3_ST_CW_CERT_C;
3352 if (s->state == SSL3_ST_CW_CERT_C)
3354 s->state=SSL3_ST_CW_CERT_D;
3355 ssl3_output_cert_chain(s,
3356 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key);
3358 /* SSL3_ST_CW_CERT_D */
3359 return ssl_do_write(s);
3362 #define has_bits(i,m) (((i)&(m)) == (m))
3364 int ssl3_check_cert_and_algorithm(SSL *s)
3368 EVP_PKEY *pkey=NULL;
3370 #ifndef OPENSSL_NO_RSA
3373 #ifndef OPENSSL_NO_DH
3377 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3378 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3380 /* we don't have a certificate */
3381 if ((alg_a & (SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3384 sc=s->session->sess_cert;
3387 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3391 #ifndef OPENSSL_NO_RSA
3392 rsa=s->session->sess_cert->peer_rsa_tmp;
3394 #ifndef OPENSSL_NO_DH
3395 dh=s->session->sess_cert->peer_dh_tmp;
3398 /* This is the passed certificate */
3400 idx=sc->peer_cert_type;
3401 #ifndef OPENSSL_NO_ECDH
3402 if (idx == SSL_PKEY_ECC)
3404 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3406 { /* check failed */
3407 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3415 else if (alg_a & SSL_aECDSA)
3417 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_ECDSA_SIGNING_CERT);
3420 else if (alg_k & (SSL_kECDHr|SSL_kECDHe))
3422 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_ECDH_CERT);
3426 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3427 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3428 EVP_PKEY_free(pkey);
3431 /* Check that we have a certificate if we require one */
3432 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3434 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3437 #ifndef OPENSSL_NO_DSA
3438 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3440 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3444 #ifndef OPENSSL_NO_RSA
3445 if ((alg_k & SSL_kRSA) &&
3446 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3448 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3452 #ifndef OPENSSL_NO_DH
3453 if ((alg_k & SSL_kEDH) &&
3454 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3456 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3459 else if ((alg_k & SSL_kDHr) && !SSL_USE_SIGALGS(s) &&
3460 !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3462 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3465 #ifndef OPENSSL_NO_DSA
3466 else if ((alg_k & SSL_kDHd) && !SSL_USE_SIGALGS(s) &&
3467 !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3469 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3475 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3477 #ifndef OPENSSL_NO_RSA
3478 if (alg_k & SSL_kRSA)
3481 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3483 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3489 #ifndef OPENSSL_NO_DH
3490 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3493 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3495 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3502 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3508 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3513 /* Check to see if handshake is full or resumed. Usually this is just a
3514 * case of checking to see if a cache hit has occurred. In the case of
3515 * session tickets we have to check the next message to be sure.
3518 #ifndef OPENSSL_NO_TLSEXT
3519 # ifndef OPENSSL_NO_NEXTPROTONEG
3520 int ssl3_send_next_proto(SSL *s)
3522 unsigned int len, padding_len;
3525 if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
3527 len = s->next_proto_negotiated_len;
3528 padding_len = 32 - ((len + 2) % 32);
3529 d = (unsigned char *)s->init_buf->data;
3531 memcpy(d + 5, s->next_proto_negotiated, len);
3532 d[5 + len] = padding_len;
3533 memset(d + 6 + len, 0, padding_len);
3534 *(d++)=SSL3_MT_NEXT_PROTO;
3535 l2n3(2 + len + padding_len, d);
3536 s->state = SSL3_ST_CW_NEXT_PROTO_B;
3537 s->init_num = 4 + 2 + len + padding_len;
3541 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3545 int ssl3_check_finished(SSL *s)
3549 /* If we have no ticket it cannot be a resumed session. */
3550 if (!s->session->tlsext_tick)
3552 /* this function is called when we really expect a Certificate
3553 * message, so permit appropriate message length */
3554 n=s->method->ssl_get_message(s,
3560 if (!ok) return((int)n);
3561 s->s3->tmp.reuse_message = 1;
3562 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3563 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3570 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3573 #ifndef OPENSSL_NO_ENGINE
3574 if (s->ctx->client_cert_engine)
3576 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3577 SSL_get_client_CA_list(s),
3578 px509, ppkey, NULL, NULL, NULL);
3583 if (s->ctx->client_cert_cb)
3584 i = s->ctx->client_cert_cb(s,px509,ppkey);
3588 #ifndef OPENSSL_NO_TLSEXT
3589 int tls1_get_server_supplemental_data(SSL *s)
3593 unsigned long supp_data_len, authz_data_len;
3595 unsigned short supp_data_type, authz_data_type, proof_len;
3596 const unsigned char *p;
3597 unsigned char *new_proof;
3599 n=s->method->ssl_get_message(s,
3600 SSL3_ST_CR_SUPPLEMENTAL_DATA_A,
3601 SSL3_ST_CR_SUPPLEMENTAL_DATA_B,
3602 SSL3_MT_SUPPLEMENTAL_DATA,
3603 /* use default limit */
3604 TLSEXT_MAXLEN_supplemental_data,
3607 if (!ok) return((int)n);
3609 p = (unsigned char *)s->init_msg;
3611 /* The message cannot be empty */
3614 al = SSL_AD_DECODE_ERROR;
3615 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3618 /* Length of supplemental data */
3619 n2l3(p,supp_data_len);
3621 /* We must have at least one supplemental data entry
3622 * with type (1 byte) and length (2 bytes). */
3623 if (supp_data_len != (unsigned long) n || n < 4)
3625 al = SSL_AD_DECODE_ERROR;
3626 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3629 /* Supplemental data type: must be authz_data */
3630 n2s(p,supp_data_type);
3632 if (supp_data_type != TLSEXT_SUPPLEMENTALDATATYPE_authz_data)
3634 al = SSL_AD_UNEXPECTED_MESSAGE;
3635 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_UNKNOWN_SUPPLEMENTAL_DATA_TYPE);
3638 /* Authz data length */
3639 n2s(p, authz_data_len);
3641 if (authz_data_len != (unsigned long) n || n < 1)
3643 al = SSL_AD_DECODE_ERROR;
3644 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3647 /* Authz data type: must be audit_proof */
3648 authz_data_type = *(p++);
3650 if (authz_data_type != TLSEXT_AUTHZDATAFORMAT_audit_proof)
3652 al=SSL_AD_UNEXPECTED_MESSAGE;
3653 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_UNKNOWN_AUTHZ_DATA_TYPE);
3656 /* We have a proof: read its length */
3659 al = SSL_AD_DECODE_ERROR;
3660 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3665 if (proof_len != (unsigned long) n)
3667 al = SSL_AD_DECODE_ERROR;
3668 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3671 /* Store the proof */
3672 new_proof = OPENSSL_realloc(s->session->audit_proof,
3674 if (new_proof == NULL)
3676 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,ERR_R_MALLOC_FAILURE);
3679 s->session->audit_proof_length = proof_len;
3680 s->session->audit_proof = new_proof;
3681 memcpy(s->session->audit_proof, p, proof_len);
3683 /* Got the proof, but can't verify it yet. */
3686 ssl3_send_alert(s,SSL3_AL_FATAL,al);