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 /* else use the pre-loaded session */
699 p=s->s3->client_random;
700 Time=(unsigned long)time(NULL); /* Time */
702 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
705 /* Do the message type and length last */
708 /* version indicates the negotiated version: for example from
709 * an SSLv2/v3 compatible client hello). The client_version
710 * field is the maximum version we permit and it is also
711 * used in RSA encrypted premaster secrets. Some servers can
712 * choke if we initially report a higher version then
713 * renegotiate to a lower one in the premaster secret. This
714 * didn't happen with TLS 1.0 as most servers supported it
715 * but it can with TLS 1.1 or later if the server only supports
718 * Possible scenario with previous logic:
719 * 1. Client hello indicates TLS 1.2
720 * 2. Server hello says TLS 1.0
721 * 3. RSA encrypted premaster secret uses 1.2.
722 * 4. Handhaked proceeds using TLS 1.0.
723 * 5. Server sends hello request to renegotiate.
724 * 6. Client hello indicates TLS v1.0 as we now
725 * know that is maximum server supports.
726 * 7. Server chokes on RSA encrypted premaster secret
727 * containing version 1.0.
729 * For interoperability it should be OK to always use the
730 * maximum version we support in client hello and then rely
731 * on the checking of version to ensure the servers isn't
732 * being inconsistent: for example initially negotiating with
733 * TLS 1.0 and renegotiating with TLS 1.2. We do this by using
734 * client_version in client hello and not resetting it to
735 * the negotiated version.
738 *(p++)=s->version>>8;
739 *(p++)=s->version&0xff;
740 s->client_version=s->version;
742 *(p++)=s->client_version>>8;
743 *(p++)=s->client_version&0xff;
747 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
754 i=s->session->session_id_length;
758 if (i > (int)sizeof(s->session->session_id))
760 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
763 memcpy(p,s->session->session_id,i);
767 /* Ciphers supported */
768 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
771 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
774 #ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
775 /* Some servers hang if client hello > 256 bytes
776 * as hack workaround chop number of supported ciphers
777 * to keep it well below this if we use TLS v1.2
779 if (TLS1_get_version(s) >= TLS1_2_VERSION
780 && i > OPENSSL_MAX_TLS1_2_CIPHER_LENGTH)
781 i = OPENSSL_MAX_TLS1_2_CIPHER_LENGTH & ~1;
787 #ifdef OPENSSL_NO_COMP
791 if ((s->options & SSL_OP_NO_COMPRESSION)
792 || !s->ctx->comp_methods)
795 j=sk_SSL_COMP_num(s->ctx->comp_methods);
799 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
803 *(p++)=0; /* Add the NULL method */
805 #ifndef OPENSSL_NO_TLSEXT
807 if (ssl_prepare_clienthello_tlsext(s) <= 0)
809 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
812 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
814 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
821 *(d++)=SSL3_MT_CLIENT_HELLO;
824 s->state=SSL3_ST_CW_CLNT_HELLO_B;
825 /* number of bytes to write */
830 /* SSL3_ST_CW_CLNT_HELLO_B */
831 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
836 int ssl3_get_server_hello(SSL *s)
838 STACK_OF(SSL_CIPHER) *sk;
841 int i,al=SSL_AD_INTERNAL_ERROR,ok;
844 #ifndef OPENSSL_NO_COMP
848 n=s->method->ssl_get_message(s,
849 SSL3_ST_CR_SRVR_HELLO_A,
850 SSL3_ST_CR_SRVR_HELLO_B,
855 if (!ok) return((int)n);
857 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
859 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
861 if ( s->d1->send_cookie == 0)
863 s->s3->tmp.reuse_message = 1;
866 else /* already sent a cookie */
868 al=SSL_AD_UNEXPECTED_MESSAGE;
869 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
875 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
877 al=SSL_AD_UNEXPECTED_MESSAGE;
878 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
882 d=p=(unsigned char *)s->init_msg;
884 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
886 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
887 s->version=(s->version&0xff00)|p[1];
888 al=SSL_AD_PROTOCOL_VERSION;
893 /* load the server hello data */
894 /* load the server random */
895 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
898 /* get the session-id */
901 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
903 al=SSL_AD_ILLEGAL_PARAMETER;
904 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
908 #ifndef OPENSSL_NO_TLSEXT
909 /* check if we want to resume the session based on external pre-shared secret */
910 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
912 SSL_CIPHER *pref_cipher=NULL;
913 s->session->master_key_length=sizeof(s->session->master_key);
914 if (s->tls_session_secret_cb(s, s->session->master_key,
915 &s->session->master_key_length,
917 s->tls_session_secret_cb_arg))
919 s->session->cipher = pref_cipher ?
920 pref_cipher : ssl_get_cipher_by_char(s, p+j);
923 #endif /* OPENSSL_NO_TLSEXT */
925 if (j != 0 && j == s->session->session_id_length
926 && memcmp(p,s->session->session_id,j) == 0)
928 if(s->sid_ctx_length != s->session->sid_ctx_length
929 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
931 /* actually a client application bug */
932 al=SSL_AD_ILLEGAL_PARAMETER;
933 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
938 else /* a miss or crap from the other end */
940 /* If we were trying for session-id reuse, make a new
941 * SSL_SESSION so we don't stuff up other people */
943 if (s->session->session_id_length > 0)
945 if (!ssl_get_new_session(s,0))
950 s->session->session_id_length=j;
951 memcpy(s->session->session_id,p,j); /* j could be 0 */
954 c=ssl_get_cipher_by_char(s,p);
958 al=SSL_AD_ILLEGAL_PARAMETER;
959 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
962 /* TLS v1.2 only ciphersuites require v1.2 or later */
963 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
964 (TLS1_get_version(s) < TLS1_2_VERSION))
966 al=SSL_AD_ILLEGAL_PARAMETER;
967 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
970 p+=ssl_put_cipher_by_char(s,NULL,NULL);
972 sk=ssl_get_ciphers_by_id(s);
973 i=sk_SSL_CIPHER_find(sk,c);
976 /* we did not say we would use this cipher */
977 al=SSL_AD_ILLEGAL_PARAMETER;
978 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
982 /* Depending on the session caching (internal/external), the cipher
983 and/or cipher_id values may not be set. Make sure that
984 cipher_id is set and use it for comparison. */
985 if (s->session->cipher)
986 s->session->cipher_id = s->session->cipher->id;
987 if (s->hit && (s->session->cipher_id != c->id))
989 /* Workaround is now obsolete */
992 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
995 al=SSL_AD_ILLEGAL_PARAMETER;
996 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
1000 s->s3->tmp.new_cipher=c;
1001 /* Don't digest cached records if TLS v1.2: we may need them for
1002 * client authentication.
1004 if (TLS1_get_version(s) < TLS1_2_VERSION && !ssl3_digest_cached_records(s))
1006 /* lets get the compression algorithm */
1008 #ifdef OPENSSL_NO_COMP
1011 al=SSL_AD_ILLEGAL_PARAMETER;
1012 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
1015 /* If compression is disabled we'd better not try to resume a session
1016 * using compression.
1018 if (s->session->compress_meth != 0)
1020 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
1025 if (s->hit && j != s->session->compress_meth)
1027 al=SSL_AD_ILLEGAL_PARAMETER;
1028 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
1033 else if (s->options & SSL_OP_NO_COMPRESSION)
1035 al=SSL_AD_ILLEGAL_PARAMETER;
1036 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
1040 comp=ssl3_comp_find(s->ctx->comp_methods,j);
1042 if ((j != 0) && (comp == NULL))
1044 al=SSL_AD_ILLEGAL_PARAMETER;
1045 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
1050 s->s3->tmp.new_compression=comp;
1054 #ifndef OPENSSL_NO_TLSEXT
1056 if (!ssl_parse_serverhello_tlsext(s,&p,d,n))
1058 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
1065 /* wrong packet length */
1066 al=SSL_AD_DECODE_ERROR;
1067 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
1073 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1078 int ssl3_get_server_certificate(SSL *s)
1080 int al,i,ok,ret= -1;
1081 unsigned long n,nc,llen,l;
1083 const unsigned char *q,*p;
1085 STACK_OF(X509) *sk=NULL;
1087 EVP_PKEY *pkey=NULL;
1088 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1090 n=s->method->ssl_get_message(s,
1097 if (!ok) return((int)n);
1099 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1100 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1101 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1103 s->s3->tmp.reuse_message=1;
1107 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1109 al=SSL_AD_UNEXPECTED_MESSAGE;
1110 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1113 p=d=(unsigned char *)s->init_msg;
1115 if ((sk=sk_X509_new_null()) == NULL)
1117 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1124 al=SSL_AD_DECODE_ERROR;
1125 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1128 for (nc=0; nc<llen; )
1131 if ((l+nc+3) > llen)
1133 al=SSL_AD_DECODE_ERROR;
1134 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1139 x=d2i_X509(NULL,&q,l);
1142 al=SSL_AD_BAD_CERTIFICATE;
1143 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1148 al=SSL_AD_DECODE_ERROR;
1149 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1152 if (!sk_X509_push(sk,x))
1154 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1162 i=ssl_verify_cert_chain(s,sk);
1163 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1164 #ifndef OPENSSL_NO_KRB5
1165 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1166 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1167 #endif /* OPENSSL_NO_KRB5 */
1170 al=ssl_verify_alarm_type(s->verify_result);
1171 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1174 ERR_clear_error(); /* but we keep s->verify_result */
1176 sc=ssl_sess_cert_new();
1177 if (sc == NULL) goto err;
1179 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1180 s->session->sess_cert=sc;
1183 /* Inconsistency alert: cert_chain does include the peer's
1184 * certificate, which we don't include in s3_srvr.c */
1185 x=sk_X509_value(sk,0);
1187 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1189 pkey=X509_get_pubkey(x);
1191 /* VRS: allow null cert if auth == KRB5 */
1192 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1193 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1197 printf("pkey,x = %p, %p\n", pkey,x);
1198 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1199 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1200 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1201 #endif /* KSSL_DEBUG */
1203 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1207 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1208 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1212 i=ssl_cert_type(x,pkey);
1213 if (need_cert && i < 0)
1217 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1218 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1224 sc->peer_cert_type=i;
1225 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1226 /* Why would the following ever happen?
1227 * We just created sc a couple of lines ago. */
1228 if (sc->peer_pkeys[i].x509 != NULL)
1229 X509_free(sc->peer_pkeys[i].x509);
1230 sc->peer_pkeys[i].x509=x;
1231 sc->peer_key= &(sc->peer_pkeys[i]);
1233 if (s->session->peer != NULL)
1234 X509_free(s->session->peer);
1235 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1240 sc->peer_cert_type=i;
1243 if (s->session->peer != NULL)
1244 X509_free(s->session->peer);
1245 s->session->peer=NULL;
1247 s->session->verify_result = s->verify_result;
1250 #ifndef OPENSSL_NO_TLSEXT
1251 /* Check the audit proof. */
1252 if (s->ctx->tlsext_authz_server_audit_proof_cb)
1254 ret = s->ctx->tlsext_authz_server_audit_proof_cb(s,
1255 s->ctx->tlsext_authz_server_audit_proof_cb_arg);
1258 al = SSL_AD_BAD_CERTIFICATE;
1259 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_INVALID_AUDIT_PROOF);
1270 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1273 EVP_PKEY_free(pkey);
1275 sk_X509_pop_free(sk,X509_free);
1279 int ssl3_get_key_exchange(SSL *s)
1281 #ifndef OPENSSL_NO_RSA
1282 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1285 unsigned char *param,*p;
1286 int al,i,j,param_len,ok;
1288 EVP_PKEY *pkey=NULL;
1289 const EVP_MD *md = NULL;
1290 #ifndef OPENSSL_NO_RSA
1293 #ifndef OPENSSL_NO_DH
1296 #ifndef OPENSSL_NO_ECDH
1297 EC_KEY *ecdh = NULL;
1298 BN_CTX *bn_ctx = NULL;
1299 EC_POINT *srvr_ecpoint = NULL;
1301 int encoded_pt_len = 0;
1304 /* use same message size as in ssl3_get_certificate_request()
1305 * as ServerKeyExchange message may be skipped */
1306 n=s->method->ssl_get_message(s,
1307 SSL3_ST_CR_KEY_EXCH_A,
1308 SSL3_ST_CR_KEY_EXCH_B,
1312 if (!ok) return((int)n);
1314 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1316 #ifndef OPENSSL_NO_PSK
1317 /* In plain PSK ciphersuite, ServerKeyExchange can be
1318 omitted if no identity hint is sent. Set
1319 session->sess_cert anyway to avoid problems
1321 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1323 s->session->sess_cert=ssl_sess_cert_new();
1324 if (s->ctx->psk_identity_hint)
1325 OPENSSL_free(s->ctx->psk_identity_hint);
1326 s->ctx->psk_identity_hint = NULL;
1329 s->s3->tmp.reuse_message=1;
1333 param=p=(unsigned char *)s->init_msg;
1334 if (s->session->sess_cert != NULL)
1336 #ifndef OPENSSL_NO_RSA
1337 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1339 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1340 s->session->sess_cert->peer_rsa_tmp=NULL;
1343 #ifndef OPENSSL_NO_DH
1344 if (s->session->sess_cert->peer_dh_tmp)
1346 DH_free(s->session->sess_cert->peer_dh_tmp);
1347 s->session->sess_cert->peer_dh_tmp=NULL;
1350 #ifndef OPENSSL_NO_ECDH
1351 if (s->session->sess_cert->peer_ecdh_tmp)
1353 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1354 s->session->sess_cert->peer_ecdh_tmp=NULL;
1360 s->session->sess_cert=ssl_sess_cert_new();
1364 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1365 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1366 EVP_MD_CTX_init(&md_ctx);
1368 #ifndef OPENSSL_NO_PSK
1369 if (alg_k & SSL_kPSK)
1371 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1373 al=SSL_AD_HANDSHAKE_FAILURE;
1376 /* Store PSK identity hint for later use, hint is used
1377 * in ssl3_send_client_key_exchange. Assume that the
1378 * maximum length of a PSK identity hint can be as
1379 * long as the maximum length of a PSK identity. */
1380 if (i > PSK_MAX_IDENTITY_LEN)
1382 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1383 SSL_R_DATA_LENGTH_TOO_LONG);
1388 al=SSL_AD_DECODE_ERROR;
1389 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1390 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1393 /* If received PSK identity hint contains NULL
1394 * characters, the hint is truncated from the first
1395 * NULL. p may not be ending with NULL, so create a
1396 * NULL-terminated string. */
1397 memcpy(tmp_id_hint, p, i);
1398 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1399 if (s->ctx->psk_identity_hint != NULL)
1400 OPENSSL_free(s->ctx->psk_identity_hint);
1401 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1402 if (s->ctx->psk_identity_hint == NULL)
1404 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1412 #endif /* !OPENSSL_NO_PSK */
1413 #ifndef OPENSSL_NO_SRP
1414 if (alg_k & SSL_kSRP)
1420 al=SSL_AD_DECODE_ERROR;
1421 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1424 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1426 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1435 al=SSL_AD_DECODE_ERROR;
1436 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1439 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1441 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1446 i = (unsigned int)(p[0]);
1451 al=SSL_AD_DECODE_ERROR;
1452 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1455 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1457 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1466 al=SSL_AD_DECODE_ERROR;
1467 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1470 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1472 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1478 /* We must check if there is a certificate */
1479 #ifndef OPENSSL_NO_RSA
1480 if (alg_a & SSL_aRSA)
1481 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1486 #ifndef OPENSSL_NO_DSA
1487 else if (alg_a & SSL_aDSS)
1488 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1492 #endif /* !OPENSSL_NO_SRP */
1493 #ifndef OPENSSL_NO_RSA
1494 if (alg_k & SSL_kRSA)
1496 if ((rsa=RSA_new()) == NULL)
1498 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1505 al=SSL_AD_DECODE_ERROR;
1506 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1509 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1511 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1520 al=SSL_AD_DECODE_ERROR;
1521 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1524 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1526 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1532 /* this should be because we are using an export cipher */
1533 if (alg_a & SSL_aRSA)
1534 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1537 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1540 s->session->sess_cert->peer_rsa_tmp=rsa;
1543 #else /* OPENSSL_NO_RSA */
1547 #ifndef OPENSSL_NO_DH
1548 else if (alg_k & SSL_kEDH)
1550 if ((dh=DH_new()) == NULL)
1552 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1559 al=SSL_AD_DECODE_ERROR;
1560 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1563 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1565 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1574 al=SSL_AD_DECODE_ERROR;
1575 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1578 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1580 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1589 al=SSL_AD_DECODE_ERROR;
1590 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1593 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1595 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1601 #ifndef OPENSSL_NO_RSA
1602 if (alg_a & SSL_aRSA)
1603 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1608 #ifndef OPENSSL_NO_DSA
1609 else if (alg_a & SSL_aDSS)
1610 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1612 /* else anonymous DH, so no certificate or pkey. */
1614 s->session->sess_cert->peer_dh_tmp=dh;
1617 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1619 al=SSL_AD_ILLEGAL_PARAMETER;
1620 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1623 #endif /* !OPENSSL_NO_DH */
1625 #ifndef OPENSSL_NO_ECDH
1626 else if (alg_k & SSL_kEECDH)
1629 const EC_GROUP *group;
1631 if ((ecdh=EC_KEY_new()) == NULL)
1633 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1637 /* Extract elliptic curve parameters and the
1638 * server's ephemeral ECDH public key.
1639 * Keep accumulating lengths of various components in
1640 * param_len and make sure it never exceeds n.
1643 /* XXX: For now we only support named (not generic) curves
1644 * and the ECParameters in this case is just three bytes.
1647 if ((param_len > n) ||
1648 (*p != NAMED_CURVE_TYPE) ||
1649 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1651 al=SSL_AD_INTERNAL_ERROR;
1652 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1656 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1659 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1662 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1664 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1667 EC_GROUP_free(ngroup);
1669 group = EC_KEY_get0_group(ecdh);
1671 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1672 (EC_GROUP_get_degree(group) > 163))
1674 al=SSL_AD_EXPORT_RESTRICTION;
1675 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1681 /* Next, get the encoded ECPoint */
1682 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1683 ((bn_ctx = BN_CTX_new()) == NULL))
1685 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1689 encoded_pt_len = *p; /* length of encoded point */
1691 param_len += (1 + encoded_pt_len);
1692 if ((param_len > n) ||
1693 (EC_POINT_oct2point(group, srvr_ecpoint,
1694 p, encoded_pt_len, bn_ctx) == 0))
1696 al=SSL_AD_DECODE_ERROR;
1697 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1704 /* The ECC/TLS specification does not mention
1705 * the use of DSA to sign ECParameters in the server
1706 * key exchange message. We do support RSA and ECDSA.
1709 #ifndef OPENSSL_NO_RSA
1710 else if (alg_a & SSL_aRSA)
1711 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1713 #ifndef OPENSSL_NO_ECDSA
1714 else if (alg_a & SSL_aECDSA)
1715 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1717 /* else anonymous ECDH, so no certificate or pkey. */
1718 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1719 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1721 BN_CTX_free(bn_ctx);
1723 EC_POINT_free(srvr_ecpoint);
1724 srvr_ecpoint = NULL;
1728 al=SSL_AD_UNEXPECTED_MESSAGE;
1729 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1732 #endif /* !OPENSSL_NO_ECDH */
1735 /* p points to the next byte, there are 'n' bytes left */
1737 /* if it was signed, check the signature */
1740 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1742 int sigalg = tls12_get_sigid(pkey);
1743 /* Should never happen */
1746 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1749 /* Check key type is consistent with signature */
1750 if (sigalg != (int)p[1])
1752 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE);
1753 al=SSL_AD_DECODE_ERROR;
1756 md = tls12_get_hash(p[0]);
1759 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
1760 al=SSL_AD_DECODE_ERROR;
1764 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1774 j=EVP_PKEY_size(pkey);
1776 if ((i != n) || (n > j) || (n <= 0))
1778 /* wrong packet length */
1779 al=SSL_AD_DECODE_ERROR;
1780 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1784 #ifndef OPENSSL_NO_RSA
1785 if (pkey->type == EVP_PKEY_RSA && TLS1_get_version(s) < TLS1_2_VERSION)
1791 for (num=2; num > 0; num--)
1793 EVP_MD_CTX_set_flags(&md_ctx,
1794 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1795 EVP_DigestInit_ex(&md_ctx,(num == 2)
1796 ?s->ctx->md5:s->ctx->sha1, NULL);
1797 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1798 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1799 EVP_DigestUpdate(&md_ctx,param,param_len);
1800 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1804 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1808 al=SSL_AD_DECRYPT_ERROR;
1809 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1815 al=SSL_AD_DECRYPT_ERROR;
1816 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1823 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1824 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1825 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1826 EVP_VerifyUpdate(&md_ctx,param,param_len);
1827 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1830 al=SSL_AD_DECRYPT_ERROR;
1831 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1838 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1839 /* aNULL or kPSK do not need public keys */
1841 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1844 /* still data left over */
1847 al=SSL_AD_DECODE_ERROR;
1848 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1852 EVP_PKEY_free(pkey);
1853 EVP_MD_CTX_cleanup(&md_ctx);
1856 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1858 EVP_PKEY_free(pkey);
1859 #ifndef OPENSSL_NO_RSA
1863 #ifndef OPENSSL_NO_DH
1867 #ifndef OPENSSL_NO_ECDH
1868 BN_CTX_free(bn_ctx);
1869 EC_POINT_free(srvr_ecpoint);
1873 EVP_MD_CTX_cleanup(&md_ctx);
1877 int ssl3_get_certificate_request(SSL *s)
1880 unsigned long n,nc,l;
1881 unsigned int llen, ctype_num,i;
1883 const unsigned char *p,*q;
1885 STACK_OF(X509_NAME) *ca_sk=NULL;
1887 n=s->method->ssl_get_message(s,
1888 SSL3_ST_CR_CERT_REQ_A,
1889 SSL3_ST_CR_CERT_REQ_B,
1894 if (!ok) return((int)n);
1896 s->s3->tmp.cert_req=0;
1898 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1900 s->s3->tmp.reuse_message=1;
1901 /* If we get here we don't need any cached handshake records
1902 * as we wont be doing client auth.
1904 if (s->s3->handshake_buffer)
1906 if (!ssl3_digest_cached_records(s))
1912 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1914 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1915 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1919 /* TLS does not like anon-DH with client cert */
1920 if (s->version > SSL3_VERSION)
1922 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1924 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1925 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1930 p=d=(unsigned char *)s->init_msg;
1932 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1934 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1938 /* get the certificate types */
1940 if (ctype_num > SSL3_CT_NUMBER)
1941 ctype_num=SSL3_CT_NUMBER;
1942 for (i=0; i<ctype_num; i++)
1943 s->s3->tmp.ctype[i]= p[i];
1945 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1948 /* Check we have enough room for signature algorithms and
1949 * following length value.
1951 if ((unsigned long)(p - d + llen + 2) > n)
1953 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1954 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
1957 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
1959 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1960 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
1966 /* get the CA RDNs */
1971 out=fopen("/tmp/vsign.der","w");
1972 fwrite(p,1,llen,out);
1977 if ((unsigned long)(p - d + llen) != n)
1979 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1980 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1984 for (nc=0; nc<llen; )
1987 if ((l+nc+2) > llen)
1989 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1990 goto cont; /* netscape bugs */
1991 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1992 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1998 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
2000 /* If netscape tolerance is on, ignore errors */
2001 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
2005 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2006 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
2013 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2014 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
2017 if (!sk_X509_NAME_push(ca_sk,xn))
2019 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
2033 /* we should setup a certificate to return.... */
2034 s->s3->tmp.cert_req=1;
2035 s->s3->tmp.ctype_num=ctype_num;
2036 if (s->s3->tmp.ca_names != NULL)
2037 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
2038 s->s3->tmp.ca_names=ca_sk;
2043 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
2047 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
2049 return(X509_NAME_cmp(*a,*b));
2051 #ifndef OPENSSL_NO_TLSEXT
2052 int ssl3_get_new_session_ticket(SSL *s)
2054 int ok,al,ret=0, ticklen;
2056 const unsigned char *p;
2059 n=s->method->ssl_get_message(s,
2060 SSL3_ST_CR_SESSION_TICKET_A,
2061 SSL3_ST_CR_SESSION_TICKET_B,
2069 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
2071 s->s3->tmp.reuse_message=1;
2074 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
2076 al=SSL_AD_UNEXPECTED_MESSAGE;
2077 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
2082 /* need at least ticket_lifetime_hint + ticket length */
2083 al = SSL_AD_DECODE_ERROR;
2084 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2088 p=d=(unsigned char *)s->init_msg;
2089 n2l(p, s->session->tlsext_tick_lifetime_hint);
2091 /* ticket_lifetime_hint + ticket_length + ticket */
2092 if (ticklen + 6 != n)
2094 al = SSL_AD_DECODE_ERROR;
2095 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2098 if (s->session->tlsext_tick)
2100 OPENSSL_free(s->session->tlsext_tick);
2101 s->session->tlsext_ticklen = 0;
2103 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2104 if (!s->session->tlsext_tick)
2106 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2109 memcpy(s->session->tlsext_tick, p, ticklen);
2110 s->session->tlsext_ticklen = ticklen;
2111 /* There are two ways to detect a resumed ticket sesion.
2112 * One is to set an appropriate session ID and then the server
2113 * must return a match in ServerHello. This allows the normal
2114 * client session ID matching to work and we know much
2115 * earlier that the ticket has been accepted.
2117 * The other way is to set zero length session ID when the
2118 * ticket is presented and rely on the handshake to determine
2119 * session resumption.
2121 * We choose the former approach because this fits in with
2122 * assumptions elsewhere in OpenSSL. The session ID is set
2123 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2126 EVP_Digest(p, ticklen,
2127 s->session->session_id, &s->session->session_id_length,
2128 #ifndef OPENSSL_NO_SHA256
2129 EVP_sha256(), NULL);
2136 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2141 int ssl3_get_cert_status(SSL *s)
2144 unsigned long resplen,n;
2145 const unsigned char *p;
2147 n=s->method->ssl_get_message(s,
2148 SSL3_ST_CR_CERT_STATUS_A,
2149 SSL3_ST_CR_CERT_STATUS_B,
2150 SSL3_MT_CERTIFICATE_STATUS,
2154 if (!ok) return((int)n);
2157 /* need at least status type + length */
2158 al = SSL_AD_DECODE_ERROR;
2159 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2162 p = (unsigned char *)s->init_msg;
2163 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2165 al = SSL_AD_DECODE_ERROR;
2166 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2170 if (resplen + 4 != n)
2172 al = SSL_AD_DECODE_ERROR;
2173 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2176 if (s->tlsext_ocsp_resp)
2177 OPENSSL_free(s->tlsext_ocsp_resp);
2178 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2179 if (!s->tlsext_ocsp_resp)
2181 al = SSL_AD_INTERNAL_ERROR;
2182 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2185 s->tlsext_ocsp_resplen = resplen;
2186 if (s->ctx->tlsext_status_cb)
2189 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2192 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2193 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2198 al = SSL_AD_INTERNAL_ERROR;
2199 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2205 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2210 int ssl3_get_server_done(SSL *s)
2215 n=s->method->ssl_get_message(s,
2216 SSL3_ST_CR_SRVR_DONE_A,
2217 SSL3_ST_CR_SRVR_DONE_B,
2218 SSL3_MT_SERVER_DONE,
2219 30, /* should be very small, like 0 :-) */
2222 if (!ok) return((int)n);
2225 /* should contain no data */
2226 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2227 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2235 int ssl3_send_client_key_exchange(SSL *s)
2237 unsigned char *p,*d;
2239 unsigned long alg_k;
2240 #ifndef OPENSSL_NO_RSA
2242 EVP_PKEY *pkey=NULL;
2244 #ifndef OPENSSL_NO_KRB5
2246 #endif /* OPENSSL_NO_KRB5 */
2247 #ifndef OPENSSL_NO_ECDH
2248 EC_KEY *clnt_ecdh = NULL;
2249 const EC_POINT *srvr_ecpoint = NULL;
2250 EVP_PKEY *srvr_pub_pkey = NULL;
2251 unsigned char *encodedPoint = NULL;
2252 int encoded_pt_len = 0;
2253 BN_CTX * bn_ctx = NULL;
2256 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2258 d=(unsigned char *)s->init_buf->data;
2261 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2263 /* Fool emacs indentation */
2265 #ifndef OPENSSL_NO_RSA
2266 else if (alg_k & SSL_kRSA)
2269 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2271 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2272 rsa=s->session->sess_cert->peer_rsa_tmp;
2275 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2276 if ((pkey == NULL) ||
2277 (pkey->type != EVP_PKEY_RSA) ||
2278 (pkey->pkey.rsa == NULL))
2280 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2284 EVP_PKEY_free(pkey);
2287 tmp_buf[0]=s->client_version>>8;
2288 tmp_buf[1]=s->client_version&0xff;
2289 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2292 s->session->master_key_length=sizeof tmp_buf;
2295 /* Fix buf for TLS and beyond */
2296 if (s->version > SSL3_VERSION)
2298 n=RSA_public_encrypt(sizeof tmp_buf,
2299 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2301 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2302 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2306 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2310 /* Fix buf for TLS and beyond */
2311 if (s->version > SSL3_VERSION)
2317 s->session->master_key_length=
2318 s->method->ssl3_enc->generate_master_secret(s,
2319 s->session->master_key,
2320 tmp_buf,sizeof tmp_buf);
2321 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2324 #ifndef OPENSSL_NO_KRB5
2325 else if (alg_k & SSL_kKRB5)
2327 krb5_error_code krb5rc;
2328 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2329 /* krb5_data krb5_ap_req; */
2330 krb5_data *enc_ticket;
2331 krb5_data authenticator, *authp = NULL;
2332 EVP_CIPHER_CTX ciph_ctx;
2333 const EVP_CIPHER *enc = NULL;
2334 unsigned char iv[EVP_MAX_IV_LENGTH];
2335 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2336 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2337 + EVP_MAX_IV_LENGTH];
2338 int padl, outl = sizeof(epms);
2340 EVP_CIPHER_CTX_init(&ciph_ctx);
2343 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2345 #endif /* KSSL_DEBUG */
2349 if (KRB5SENDAUTH) authp = &authenticator;
2350 #endif /* KRB5SENDAUTH */
2352 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2354 enc = kssl_map_enc(kssl_ctx->enctype);
2359 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2360 if (krb5rc && kssl_err.text)
2361 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2363 #endif /* KSSL_DEBUG */
2367 ssl3_send_alert(s,SSL3_AL_FATAL,
2368 SSL_AD_HANDSHAKE_FAILURE);
2369 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2374 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2375 ** in place of RFC 2712 KerberosWrapper, as in:
2377 ** Send ticket (copy to *p, set n = length)
2378 ** n = krb5_ap_req.length;
2379 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2380 ** if (krb5_ap_req.data)
2381 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2383 ** Now using real RFC 2712 KerberosWrapper
2384 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2385 ** Note: 2712 "opaque" types are here replaced
2386 ** with a 2-byte length followed by the value.
2388 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2389 ** Where "xx xx" = length bytes. Shown here with
2390 ** optional authenticator omitted.
2393 /* KerberosWrapper.Ticket */
2394 s2n(enc_ticket->length,p);
2395 memcpy(p, enc_ticket->data, enc_ticket->length);
2396 p+= enc_ticket->length;
2397 n = enc_ticket->length + 2;
2399 /* KerberosWrapper.Authenticator */
2400 if (authp && authp->length)
2402 s2n(authp->length,p);
2403 memcpy(p, authp->data, authp->length);
2405 n+= authp->length + 2;
2413 s2n(0,p);/* null authenticator length */
2417 tmp_buf[0]=s->client_version>>8;
2418 tmp_buf[1]=s->client_version&0xff;
2419 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2422 /* 20010420 VRS. Tried it this way; failed.
2423 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2424 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2425 ** kssl_ctx->length);
2426 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2429 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2430 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2432 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2434 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2436 if (outl > (int)sizeof epms)
2438 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2441 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2443 /* KerberosWrapper.EncryptedPreMasterSecret */
2445 memcpy(p, epms, outl);
2449 s->session->master_key_length=
2450 s->method->ssl3_enc->generate_master_secret(s,
2451 s->session->master_key,
2452 tmp_buf, sizeof tmp_buf);
2454 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2455 OPENSSL_cleanse(epms, outl);
2458 #ifndef OPENSSL_NO_DH
2459 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2461 DH *dh_srvr,*dh_clnt;
2462 SESS_CERT *scert = s->session->sess_cert;
2466 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2467 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2471 if (scert->peer_dh_tmp != NULL)
2472 dh_srvr=scert->peer_dh_tmp;
2475 /* we get them from the cert */
2476 int idx = scert->peer_cert_type;
2477 EVP_PKEY *spkey = NULL;
2480 spkey = X509_get_pubkey(
2481 scert->peer_pkeys[idx].x509);
2484 dh_srvr = EVP_PKEY_get1_DH(spkey);
2485 EVP_PKEY_free(spkey);
2487 if (dh_srvr == NULL)
2489 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2490 ERR_R_INTERNAL_ERROR);
2494 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
2496 /* Use client certificate key */
2497 EVP_PKEY *clkey = s->cert->key->privatekey;
2500 dh_clnt = EVP_PKEY_get1_DH(clkey);
2501 if (dh_clnt == NULL)
2503 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2504 ERR_R_INTERNAL_ERROR);
2510 /* generate a new random key */
2511 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2513 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2516 if (!DH_generate_key(dh_clnt))
2518 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2524 /* use the 'p' output buffer for the DH key, but
2525 * make sure to clear it out afterwards */
2527 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2528 if (scert->peer_dh_tmp == NULL)
2533 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2538 /* generate master key from the result */
2539 s->session->master_key_length=
2540 s->method->ssl3_enc->generate_master_secret(s,
2541 s->session->master_key,p,n);
2545 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
2549 /* send off the data */
2550 n=BN_num_bytes(dh_clnt->pub_key);
2552 BN_bn2bin(dh_clnt->pub_key,p);
2558 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2562 #ifndef OPENSSL_NO_ECDH
2563 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2565 const EC_GROUP *srvr_group = NULL;
2567 int ecdh_clnt_cert = 0;
2570 /* Did we send out the client's
2571 * ECDH share for use in premaster
2572 * computation as part of client certificate?
2573 * If so, set ecdh_clnt_cert to 1.
2575 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2577 /* XXX: For now, we do not support client
2578 * authentication using ECDH certificates.
2579 * To add such support, one needs to add
2580 * code that checks for appropriate
2581 * conditions and sets ecdh_clnt_cert to 1.
2582 * For example, the cert have an ECC
2583 * key on the same curve as the server's
2584 * and the key should be authorized for
2587 * One also needs to add code in ssl3_connect
2588 * to skip sending the certificate verify
2591 * if ((s->cert->key->privatekey != NULL) &&
2592 * (s->cert->key->privatekey->type ==
2593 * EVP_PKEY_EC) && ...)
2594 * ecdh_clnt_cert = 1;
2598 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2600 tkey = s->session->sess_cert->peer_ecdh_tmp;
2604 /* Get the Server Public Key from Cert */
2605 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2606 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2607 if ((srvr_pub_pkey == NULL) ||
2608 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2609 (srvr_pub_pkey->pkey.ec == NULL))
2611 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2612 ERR_R_INTERNAL_ERROR);
2616 tkey = srvr_pub_pkey->pkey.ec;
2619 srvr_group = EC_KEY_get0_group(tkey);
2620 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2622 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2624 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2625 ERR_R_INTERNAL_ERROR);
2629 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2631 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2635 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2637 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2642 /* Reuse key info from our certificate
2643 * We only need our private key to perform
2644 * the ECDH computation.
2646 const BIGNUM *priv_key;
2647 tkey = s->cert->key->privatekey->pkey.ec;
2648 priv_key = EC_KEY_get0_private_key(tkey);
2649 if (priv_key == NULL)
2651 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2654 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2656 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2662 /* Generate a new ECDH key pair */
2663 if (!(EC_KEY_generate_key(clnt_ecdh)))
2665 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2670 /* use the 'p' output buffer for the ECDH key, but
2671 * make sure to clear it out afterwards
2674 field_size = EC_GROUP_get_degree(srvr_group);
2675 if (field_size <= 0)
2677 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2681 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2684 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2689 /* generate master key from the result */
2690 s->session->master_key_length = s->method->ssl3_enc \
2691 -> generate_master_secret(s,
2692 s->session->master_key,
2695 memset(p, 0, n); /* clean up */
2699 /* Send empty client key exch message */
2704 /* First check the size of encoding and
2705 * allocate memory accordingly.
2708 EC_POINT_point2oct(srvr_group,
2709 EC_KEY_get0_public_key(clnt_ecdh),
2710 POINT_CONVERSION_UNCOMPRESSED,
2713 encodedPoint = (unsigned char *)
2714 OPENSSL_malloc(encoded_pt_len *
2715 sizeof(unsigned char));
2716 bn_ctx = BN_CTX_new();
2717 if ((encodedPoint == NULL) ||
2720 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2724 /* Encode the public key */
2725 n = EC_POINT_point2oct(srvr_group,
2726 EC_KEY_get0_public_key(clnt_ecdh),
2727 POINT_CONVERSION_UNCOMPRESSED,
2728 encodedPoint, encoded_pt_len, bn_ctx);
2730 *p = n; /* length of encoded point */
2731 /* Encoded point will be copied here */
2733 /* copy the point */
2734 memcpy((unsigned char *)p, encodedPoint, n);
2735 /* increment n to account for length field */
2739 /* Free allocated memory */
2740 BN_CTX_free(bn_ctx);
2741 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2742 if (clnt_ecdh != NULL)
2743 EC_KEY_free(clnt_ecdh);
2744 EVP_PKEY_free(srvr_pub_pkey);
2746 #endif /* !OPENSSL_NO_ECDH */
2747 else if (alg_k & SSL_kGOST)
2749 /* GOST key exchange message creation */
2750 EVP_PKEY_CTX *pkey_ctx;
2753 unsigned int md_len;
2755 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2756 EVP_MD_CTX *ukm_hash;
2759 /* Get server sertificate PKEY and create ctx from it */
2760 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2762 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2764 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2768 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2769 /* If we have send a certificate, and certificate key
2771 * parameters match those of server certificate, use
2772 * certificate key for key exchange
2775 /* Otherwise, generate ephemeral key pair */
2777 EVP_PKEY_encrypt_init(pkey_ctx);
2778 /* Generate session key */
2779 RAND_bytes(premaster_secret,32);
2780 /* If we have client certificate, use its secret as peer key */
2781 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2782 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2783 /* If there was an error - just ignore it. Ephemeral key
2789 /* Compute shared IV and store it in algorithm-specific
2791 ukm_hash = EVP_MD_CTX_create();
2792 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2793 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2794 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2795 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2796 EVP_MD_CTX_destroy(ukm_hash);
2797 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2799 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2803 /* Make GOST keytransport blob message */
2804 /*Encapsulate it into sequence */
2805 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2807 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2808 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2815 *(p++)= msglen & 0xff;
2820 *(p++)= msglen & 0xff;
2823 memcpy(p, tmp, msglen);
2824 /* Check if pubkey from client certificate was used */
2825 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2827 /* Set flag "skip certificate verify" */
2828 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2830 EVP_PKEY_CTX_free(pkey_ctx);
2831 s->session->master_key_length=
2832 s->method->ssl3_enc->generate_master_secret(s,
2833 s->session->master_key,premaster_secret,32);
2834 EVP_PKEY_free(pub_key);
2837 #ifndef OPENSSL_NO_SRP
2838 else if (alg_k & SSL_kSRP)
2840 if (s->srp_ctx.A != NULL)
2842 /* send off the data */
2843 n=BN_num_bytes(s->srp_ctx.A);
2845 BN_bn2bin(s->srp_ctx.A,p);
2850 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2853 if (s->session->srp_username != NULL)
2854 OPENSSL_free(s->session->srp_username);
2855 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2856 if (s->session->srp_username == NULL)
2858 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2859 ERR_R_MALLOC_FAILURE);
2863 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2865 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2870 #ifndef OPENSSL_NO_PSK
2871 else if (alg_k & SSL_kPSK)
2873 char identity[PSK_MAX_IDENTITY_LEN];
2874 unsigned char *t = NULL;
2875 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2876 unsigned int pre_ms_len = 0, psk_len = 0;
2880 if (s->psk_client_callback == NULL)
2882 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2883 SSL_R_PSK_NO_CLIENT_CB);
2887 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2888 identity, PSK_MAX_IDENTITY_LEN,
2889 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2890 if (psk_len > PSK_MAX_PSK_LEN)
2892 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2893 ERR_R_INTERNAL_ERROR);
2896 else if (psk_len == 0)
2898 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2899 SSL_R_PSK_IDENTITY_NOT_FOUND);
2903 /* create PSK pre_master_secret */
2904 pre_ms_len = 2+psk_len+2+psk_len;
2906 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2908 memset(t, 0, psk_len);
2912 if (s->session->psk_identity_hint != NULL)
2913 OPENSSL_free(s->session->psk_identity_hint);
2914 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2915 if (s->ctx->psk_identity_hint != NULL &&
2916 s->session->psk_identity_hint == NULL)
2918 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2919 ERR_R_MALLOC_FAILURE);
2923 if (s->session->psk_identity != NULL)
2924 OPENSSL_free(s->session->psk_identity);
2925 s->session->psk_identity = BUF_strdup(identity);
2926 if (s->session->psk_identity == NULL)
2928 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2929 ERR_R_MALLOC_FAILURE);
2933 s->session->master_key_length =
2934 s->method->ssl3_enc->generate_master_secret(s,
2935 s->session->master_key,
2936 psk_or_pre_ms, pre_ms_len);
2937 n = strlen(identity);
2939 memcpy(p, identity, n);
2943 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2944 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2947 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2954 ssl3_send_alert(s, SSL3_AL_FATAL,
2955 SSL_AD_HANDSHAKE_FAILURE);
2956 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2957 ERR_R_INTERNAL_ERROR);
2961 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2964 s->state=SSL3_ST_CW_KEY_EXCH_B;
2965 /* number of bytes to write */
2970 /* SSL3_ST_CW_KEY_EXCH_B */
2971 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2973 #ifndef OPENSSL_NO_ECDH
2974 BN_CTX_free(bn_ctx);
2975 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2976 if (clnt_ecdh != NULL)
2977 EC_KEY_free(clnt_ecdh);
2978 EVP_PKEY_free(srvr_pub_pkey);
2983 int ssl3_send_client_verify(SSL *s)
2985 unsigned char *p,*d;
2986 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2988 EVP_PKEY_CTX *pctx=NULL;
2994 EVP_MD_CTX_init(&mctx);
2996 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2998 d=(unsigned char *)s->init_buf->data;
3000 pkey=s->cert->key->privatekey;
3001 /* Create context from key and test if sha1 is allowed as digest */
3002 pctx = EVP_PKEY_CTX_new(pkey,NULL);
3003 EVP_PKEY_sign_init(pctx);
3004 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
3006 if (TLS1_get_version(s) < TLS1_2_VERSION)
3007 s->method->ssl3_enc->cert_verify_mac(s,
3009 &(data[MD5_DIGEST_LENGTH]));
3015 /* For TLS v1.2 send signature algorithm and signature
3016 * using agreed digest and cached handshake records.
3018 if (TLS1_get_version(s) >= TLS1_2_VERSION)
3022 const EVP_MD *md = s->cert->key->digest;
3023 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
3025 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
3027 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3028 ERR_R_INTERNAL_ERROR);
3033 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
3036 if (!EVP_SignInit_ex(&mctx, md, NULL)
3037 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
3038 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
3040 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3046 if (!ssl3_digest_cached_records(s))
3050 #ifndef OPENSSL_NO_RSA
3051 if (pkey->type == EVP_PKEY_RSA)
3053 s->method->ssl3_enc->cert_verify_mac(s,
3056 if (RSA_sign(NID_md5_sha1, data,
3057 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
3058 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
3060 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
3068 #ifndef OPENSSL_NO_DSA
3069 if (pkey->type == EVP_PKEY_DSA)
3071 if (!DSA_sign(pkey->save_type,
3072 &(data[MD5_DIGEST_LENGTH]),
3073 SHA_DIGEST_LENGTH,&(p[2]),
3074 (unsigned int *)&j,pkey->pkey.dsa))
3076 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
3084 #ifndef OPENSSL_NO_ECDSA
3085 if (pkey->type == EVP_PKEY_EC)
3087 if (!ECDSA_sign(pkey->save_type,
3088 &(data[MD5_DIGEST_LENGTH]),
3089 SHA_DIGEST_LENGTH,&(p[2]),
3090 (unsigned int *)&j,pkey->pkey.ec))
3092 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3101 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
3103 unsigned char signbuf[64];
3106 s->method->ssl3_enc->cert_verify_mac(s,
3107 NID_id_GostR3411_94,
3109 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
3110 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3111 ERR_R_INTERNAL_ERROR);
3114 for (i=63,j=0; i>=0; j++, i--) {
3122 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
3125 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
3128 s->state=SSL3_ST_CW_CERT_VRFY_B;
3129 s->init_num=(int)n+4;
3132 EVP_MD_CTX_cleanup(&mctx);
3133 EVP_PKEY_CTX_free(pctx);
3134 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3136 EVP_MD_CTX_cleanup(&mctx);
3137 EVP_PKEY_CTX_free(pctx);
3141 /* Check a certificate can be used for client authentication. Currently
3142 * just check cert exists and if static DH client certificates can be used.
3144 static int ssl3_check_client_certificate(SSL *s)
3146 unsigned long alg_k;
3147 if (!s->cert || !s->cert->key->x509 || !s->cert->key->privatekey)
3149 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3150 /* See if we can use client certificate for fixed DH */
3151 if (alg_k & (SSL_kDHr|SSL_kDHd))
3153 SESS_CERT *scert = s->session->sess_cert;
3154 int i = scert->peer_cert_type;
3155 EVP_PKEY *clkey = NULL, *spkey = NULL;
3156 clkey = s->cert->key->privatekey;
3157 /* If client key not DH assume it can be used */
3158 if (EVP_PKEY_id(clkey) != EVP_PKEY_DH)
3161 spkey = X509_get_pubkey(scert->peer_pkeys[i].x509);
3164 /* Compare server and client parameters */
3165 i = EVP_PKEY_cmp_parameters(clkey, spkey);
3166 EVP_PKEY_free(spkey);
3170 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
3175 int ssl3_send_client_certificate(SSL *s)
3178 EVP_PKEY *pkey=NULL;
3182 if (s->state == SSL3_ST_CW_CERT_A)
3184 if (ssl3_check_client_certificate(s))
3185 s->state=SSL3_ST_CW_CERT_C;
3187 s->state=SSL3_ST_CW_CERT_B;
3190 /* We need to get a client cert */
3191 if (s->state == SSL3_ST_CW_CERT_B)
3193 /* If we get an error, we need to
3194 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3195 * We then get retied later */
3197 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3200 s->rwstate=SSL_X509_LOOKUP;
3203 s->rwstate=SSL_NOTHING;
3204 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3206 s->state=SSL3_ST_CW_CERT_B;
3207 if ( !SSL_use_certificate(s,x509) ||
3208 !SSL_use_PrivateKey(s,pkey))
3214 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3217 if (x509 != NULL) X509_free(x509);
3218 if (pkey != NULL) EVP_PKEY_free(pkey);
3219 if (i && !ssl3_check_client_certificate(s))
3223 if (s->version == SSL3_VERSION)
3225 s->s3->tmp.cert_req=0;
3226 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3231 s->s3->tmp.cert_req=2;
3235 /* Ok, we have a cert */
3236 s->state=SSL3_ST_CW_CERT_C;
3239 if (s->state == SSL3_ST_CW_CERT_C)
3241 s->state=SSL3_ST_CW_CERT_D;
3242 l=ssl3_output_cert_chain(s,
3243 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key);
3247 /* SSL3_ST_CW_CERT_D */
3248 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3251 #define has_bits(i,m) (((i)&(m)) == (m))
3253 int ssl3_check_cert_and_algorithm(SSL *s)
3257 EVP_PKEY *pkey=NULL;
3259 #ifndef OPENSSL_NO_RSA
3262 #ifndef OPENSSL_NO_DH
3266 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3267 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3269 /* we don't have a certificate */
3270 if ((alg_a & (SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3273 sc=s->session->sess_cert;
3276 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3280 #ifndef OPENSSL_NO_RSA
3281 rsa=s->session->sess_cert->peer_rsa_tmp;
3283 #ifndef OPENSSL_NO_DH
3284 dh=s->session->sess_cert->peer_dh_tmp;
3287 /* This is the passed certificate */
3289 idx=sc->peer_cert_type;
3290 #ifndef OPENSSL_NO_ECDH
3291 if (idx == SSL_PKEY_ECC)
3293 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3295 { /* check failed */
3296 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3305 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3306 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3307 EVP_PKEY_free(pkey);
3310 /* Check that we have a certificate if we require one */
3311 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3313 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3316 #ifndef OPENSSL_NO_DSA
3317 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3319 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3323 #ifndef OPENSSL_NO_RSA
3324 if ((alg_k & SSL_kRSA) &&
3325 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3327 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3331 #ifndef OPENSSL_NO_DH
3332 if ((alg_k & SSL_kEDH) &&
3333 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3335 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3338 else if ((alg_k & SSL_kDHr) && (TLS1_get_version(s) < TLS1_2_VERSION) &&
3339 !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3341 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3344 #ifndef OPENSSL_NO_DSA
3345 else if ((alg_k & SSL_kDHd) && (TLS1_get_version(s) < TLS1_2_VERSION) &&
3346 !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3348 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3354 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3356 #ifndef OPENSSL_NO_RSA
3357 if (alg_k & SSL_kRSA)
3360 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3362 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3368 #ifndef OPENSSL_NO_DH
3369 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3372 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3374 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3381 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3387 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3392 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
3393 int ssl3_send_next_proto(SSL *s)
3395 unsigned int len, padding_len;
3398 if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
3400 len = s->next_proto_negotiated_len;
3401 padding_len = 32 - ((len + 2) % 32);
3402 d = (unsigned char *)s->init_buf->data;
3404 memcpy(d + 5, s->next_proto_negotiated, len);
3405 d[5 + len] = padding_len;
3406 memset(d + 6 + len, 0, padding_len);
3407 *(d++)=SSL3_MT_NEXT_PROTO;
3408 l2n3(2 + len + padding_len, d);
3409 s->state = SSL3_ST_CW_NEXT_PROTO_B;
3410 s->init_num = 4 + 2 + len + padding_len;
3414 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3416 #endif /* !OPENSSL_NO_TLSEXT && !OPENSSL_NO_NEXTPROTONEG */
3418 /* Check to see if handshake is full or resumed. Usually this is just a
3419 * case of checking to see if a cache hit has occurred. In the case of
3420 * session tickets we have to check the next message to be sure.
3423 #ifndef OPENSSL_NO_TLSEXT
3424 int ssl3_check_finished(SSL *s)
3428 /* If we have no ticket it cannot be a resumed session. */
3429 if (!s->session->tlsext_tick)
3431 /* this function is called when we really expect a Certificate
3432 * message, so permit appropriate message length */
3433 n=s->method->ssl_get_message(s,
3439 if (!ok) return((int)n);
3440 s->s3->tmp.reuse_message = 1;
3441 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3442 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3449 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3452 #ifndef OPENSSL_NO_ENGINE
3453 if (s->ctx->client_cert_engine)
3455 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3456 SSL_get_client_CA_list(s),
3457 px509, ppkey, NULL, NULL, NULL);
3462 if (s->ctx->client_cert_cb)
3463 i = s->ctx->client_cert_cb(s,px509,ppkey);
3467 #ifndef OPENSSL_NO_TLSEXT
3468 int tls1_get_server_supplemental_data(SSL *s)
3472 unsigned long supp_data_len, authz_data_len;
3474 unsigned short supp_data_type, authz_data_type, proof_len;
3475 const unsigned char *p;
3476 unsigned char *new_proof;
3478 n=s->method->ssl_get_message(s,
3479 SSL3_ST_CR_SUPPLEMENTAL_DATA_A,
3480 SSL3_ST_CR_SUPPLEMENTAL_DATA_B,
3481 SSL3_MT_SUPPLEMENTAL_DATA,
3482 /* use default limit */
3483 TLSEXT_MAXLEN_supplemental_data,
3486 if (!ok) return((int)n);
3488 p = (unsigned char *)s->init_msg;
3490 /* The message cannot be empty */
3493 al = SSL_AD_DECODE_ERROR;
3494 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3497 /* Length of supplemental data */
3498 n2l3(p,supp_data_len);
3500 /* We must have at least one supplemental data entry
3501 * with type (1 byte) and length (2 bytes). */
3502 if (supp_data_len != (unsigned long) n || n < 4)
3504 al = SSL_AD_DECODE_ERROR;
3505 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3508 /* Supplemental data type: must be authz_data */
3509 n2s(p,supp_data_type);
3511 if (supp_data_type != TLSEXT_SUPPLEMENTALDATATYPE_authz_data)
3513 al = SSL_AD_UNEXPECTED_MESSAGE;
3514 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_UNKNOWN_SUPPLEMENTAL_DATA_TYPE);
3517 /* Authz data length */
3518 n2s(p, authz_data_len);
3520 if (authz_data_len != (unsigned long) n || n < 1)
3522 al = SSL_AD_DECODE_ERROR;
3523 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3526 /* Authz data type: must be audit_proof */
3527 authz_data_type = *(p++);
3529 if (authz_data_type != TLSEXT_AUTHZDATAFORMAT_audit_proof)
3531 al=SSL_AD_UNEXPECTED_MESSAGE;
3532 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_UNKNOWN_AUTHZ_DATA_TYPE);
3535 /* We have a proof: read its length */
3538 al = SSL_AD_DECODE_ERROR;
3539 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3544 if (proof_len != (unsigned long) n)
3546 al = SSL_AD_DECODE_ERROR;
3547 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3550 /* Store the proof */
3551 new_proof = OPENSSL_realloc(s->session->audit_proof,
3553 if (new_proof == NULL)
3555 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,ERR_R_MALLOC_FAILURE);
3558 s->session->audit_proof_length = proof_len;
3559 s->session->audit_proof = new_proof;
3560 memcpy(s->session->audit_proof, p, proof_len);
3562 /* Got the proof, but can't verify it yet. */
3565 ssl3_send_alert(s,SSL3_AL_FATAL,al);