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);
1269 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1272 EVP_PKEY_free(pkey);
1274 sk_X509_pop_free(sk,X509_free);
1278 int ssl3_get_key_exchange(SSL *s)
1280 #ifndef OPENSSL_NO_RSA
1281 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1284 unsigned char *param,*p;
1285 int al,i,j,param_len,ok;
1287 EVP_PKEY *pkey=NULL;
1288 const EVP_MD *md = NULL;
1289 #ifndef OPENSSL_NO_RSA
1292 #ifndef OPENSSL_NO_DH
1295 #ifndef OPENSSL_NO_ECDH
1296 EC_KEY *ecdh = NULL;
1297 BN_CTX *bn_ctx = NULL;
1298 EC_POINT *srvr_ecpoint = NULL;
1300 int encoded_pt_len = 0;
1303 /* use same message size as in ssl3_get_certificate_request()
1304 * as ServerKeyExchange message may be skipped */
1305 n=s->method->ssl_get_message(s,
1306 SSL3_ST_CR_KEY_EXCH_A,
1307 SSL3_ST_CR_KEY_EXCH_B,
1311 if (!ok) return((int)n);
1313 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1315 #ifndef OPENSSL_NO_PSK
1316 /* In plain PSK ciphersuite, ServerKeyExchange can be
1317 omitted if no identity hint is sent. Set
1318 session->sess_cert anyway to avoid problems
1320 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1322 s->session->sess_cert=ssl_sess_cert_new();
1323 if (s->ctx->psk_identity_hint)
1324 OPENSSL_free(s->ctx->psk_identity_hint);
1325 s->ctx->psk_identity_hint = NULL;
1328 s->s3->tmp.reuse_message=1;
1332 param=p=(unsigned char *)s->init_msg;
1333 if (s->session->sess_cert != NULL)
1335 #ifndef OPENSSL_NO_RSA
1336 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1338 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1339 s->session->sess_cert->peer_rsa_tmp=NULL;
1342 #ifndef OPENSSL_NO_DH
1343 if (s->session->sess_cert->peer_dh_tmp)
1345 DH_free(s->session->sess_cert->peer_dh_tmp);
1346 s->session->sess_cert->peer_dh_tmp=NULL;
1349 #ifndef OPENSSL_NO_ECDH
1350 if (s->session->sess_cert->peer_ecdh_tmp)
1352 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1353 s->session->sess_cert->peer_ecdh_tmp=NULL;
1359 s->session->sess_cert=ssl_sess_cert_new();
1363 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1364 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1365 EVP_MD_CTX_init(&md_ctx);
1367 #ifndef OPENSSL_NO_PSK
1368 if (alg_k & SSL_kPSK)
1370 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1372 al=SSL_AD_HANDSHAKE_FAILURE;
1375 /* Store PSK identity hint for later use, hint is used
1376 * in ssl3_send_client_key_exchange. Assume that the
1377 * maximum length of a PSK identity hint can be as
1378 * long as the maximum length of a PSK identity. */
1379 if (i > PSK_MAX_IDENTITY_LEN)
1381 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1382 SSL_R_DATA_LENGTH_TOO_LONG);
1387 al=SSL_AD_DECODE_ERROR;
1388 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1389 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1392 /* If received PSK identity hint contains NULL
1393 * characters, the hint is truncated from the first
1394 * NULL. p may not be ending with NULL, so create a
1395 * NULL-terminated string. */
1396 memcpy(tmp_id_hint, p, i);
1397 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1398 if (s->ctx->psk_identity_hint != NULL)
1399 OPENSSL_free(s->ctx->psk_identity_hint);
1400 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1401 if (s->ctx->psk_identity_hint == NULL)
1403 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1411 #endif /* !OPENSSL_NO_PSK */
1412 #ifndef OPENSSL_NO_SRP
1413 if (alg_k & SSL_kSRP)
1419 al=SSL_AD_DECODE_ERROR;
1420 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1423 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1425 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1434 al=SSL_AD_DECODE_ERROR;
1435 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1438 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1440 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1445 i = (unsigned int)(p[0]);
1450 al=SSL_AD_DECODE_ERROR;
1451 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1454 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1456 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1465 al=SSL_AD_DECODE_ERROR;
1466 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1469 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1471 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1477 /* We must check if there is a certificate */
1478 #ifndef OPENSSL_NO_RSA
1479 if (alg_a & SSL_aRSA)
1480 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1485 #ifndef OPENSSL_NO_DSA
1486 else if (alg_a & SSL_aDSS)
1487 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1491 #endif /* !OPENSSL_NO_SRP */
1492 #ifndef OPENSSL_NO_RSA
1493 if (alg_k & SSL_kRSA)
1495 if ((rsa=RSA_new()) == NULL)
1497 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1504 al=SSL_AD_DECODE_ERROR;
1505 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1508 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1510 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1519 al=SSL_AD_DECODE_ERROR;
1520 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1523 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1525 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1531 /* this should be because we are using an export cipher */
1532 if (alg_a & SSL_aRSA)
1533 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1536 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1539 s->session->sess_cert->peer_rsa_tmp=rsa;
1542 #else /* OPENSSL_NO_RSA */
1546 #ifndef OPENSSL_NO_DH
1547 else if (alg_k & SSL_kEDH)
1549 if ((dh=DH_new()) == NULL)
1551 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1558 al=SSL_AD_DECODE_ERROR;
1559 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1562 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1564 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1573 al=SSL_AD_DECODE_ERROR;
1574 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1577 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1579 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1588 al=SSL_AD_DECODE_ERROR;
1589 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1592 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1594 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1600 #ifndef OPENSSL_NO_RSA
1601 if (alg_a & SSL_aRSA)
1602 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1607 #ifndef OPENSSL_NO_DSA
1608 else if (alg_a & SSL_aDSS)
1609 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1611 /* else anonymous DH, so no certificate or pkey. */
1613 s->session->sess_cert->peer_dh_tmp=dh;
1616 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1618 al=SSL_AD_ILLEGAL_PARAMETER;
1619 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1622 #endif /* !OPENSSL_NO_DH */
1624 #ifndef OPENSSL_NO_ECDH
1625 else if (alg_k & SSL_kEECDH)
1628 const EC_GROUP *group;
1630 if ((ecdh=EC_KEY_new()) == NULL)
1632 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1636 /* Extract elliptic curve parameters and the
1637 * server's ephemeral ECDH public key.
1638 * Keep accumulating lengths of various components in
1639 * param_len and make sure it never exceeds n.
1642 /* XXX: For now we only support named (not generic) curves
1643 * and the ECParameters in this case is just three bytes.
1646 if ((param_len > n) ||
1647 (*p != NAMED_CURVE_TYPE) ||
1648 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1650 al=SSL_AD_INTERNAL_ERROR;
1651 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1655 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1658 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1661 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1663 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1666 EC_GROUP_free(ngroup);
1668 group = EC_KEY_get0_group(ecdh);
1670 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1671 (EC_GROUP_get_degree(group) > 163))
1673 al=SSL_AD_EXPORT_RESTRICTION;
1674 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1680 /* Next, get the encoded ECPoint */
1681 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1682 ((bn_ctx = BN_CTX_new()) == NULL))
1684 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1688 encoded_pt_len = *p; /* length of encoded point */
1690 param_len += (1 + encoded_pt_len);
1691 if ((param_len > n) ||
1692 (EC_POINT_oct2point(group, srvr_ecpoint,
1693 p, encoded_pt_len, bn_ctx) == 0))
1695 al=SSL_AD_DECODE_ERROR;
1696 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1703 /* The ECC/TLS specification does not mention
1704 * the use of DSA to sign ECParameters in the server
1705 * key exchange message. We do support RSA and ECDSA.
1708 #ifndef OPENSSL_NO_RSA
1709 else if (alg_a & SSL_aRSA)
1710 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1712 #ifndef OPENSSL_NO_ECDSA
1713 else if (alg_a & SSL_aECDSA)
1714 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1716 /* else anonymous ECDH, so no certificate or pkey. */
1717 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1718 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1720 BN_CTX_free(bn_ctx);
1722 EC_POINT_free(srvr_ecpoint);
1723 srvr_ecpoint = NULL;
1727 al=SSL_AD_UNEXPECTED_MESSAGE;
1728 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1731 #endif /* !OPENSSL_NO_ECDH */
1734 /* p points to the next byte, there are 'n' bytes left */
1736 /* if it was signed, check the signature */
1739 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1741 int sigalg = tls12_get_sigid(pkey);
1742 /* Should never happen */
1745 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1748 /* Check key type is consistent with signature */
1749 if (sigalg != (int)p[1])
1751 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE);
1752 al=SSL_AD_DECODE_ERROR;
1755 md = tls12_get_hash(p[0]);
1758 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
1759 al=SSL_AD_DECODE_ERROR;
1763 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1773 j=EVP_PKEY_size(pkey);
1775 if ((i != n) || (n > j) || (n <= 0))
1777 /* wrong packet length */
1778 al=SSL_AD_DECODE_ERROR;
1779 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1783 #ifndef OPENSSL_NO_RSA
1784 if (pkey->type == EVP_PKEY_RSA && TLS1_get_version(s) < TLS1_2_VERSION)
1790 for (num=2; num > 0; num--)
1792 EVP_MD_CTX_set_flags(&md_ctx,
1793 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1794 EVP_DigestInit_ex(&md_ctx,(num == 2)
1795 ?s->ctx->md5:s->ctx->sha1, NULL);
1796 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1797 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1798 EVP_DigestUpdate(&md_ctx,param,param_len);
1799 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1803 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1807 al=SSL_AD_DECRYPT_ERROR;
1808 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1814 al=SSL_AD_DECRYPT_ERROR;
1815 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1822 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1823 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1824 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1825 EVP_VerifyUpdate(&md_ctx,param,param_len);
1826 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1829 al=SSL_AD_DECRYPT_ERROR;
1830 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1837 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1838 /* aNULL or kPSK do not need public keys */
1840 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1843 /* still data left over */
1846 al=SSL_AD_DECODE_ERROR;
1847 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1851 EVP_PKEY_free(pkey);
1852 EVP_MD_CTX_cleanup(&md_ctx);
1855 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1857 EVP_PKEY_free(pkey);
1858 #ifndef OPENSSL_NO_RSA
1862 #ifndef OPENSSL_NO_DH
1866 #ifndef OPENSSL_NO_ECDH
1867 BN_CTX_free(bn_ctx);
1868 EC_POINT_free(srvr_ecpoint);
1872 EVP_MD_CTX_cleanup(&md_ctx);
1876 int ssl3_get_certificate_request(SSL *s)
1879 unsigned long n,nc,l;
1880 unsigned int llen, ctype_num,i;
1882 const unsigned char *p,*q;
1884 STACK_OF(X509_NAME) *ca_sk=NULL;
1886 n=s->method->ssl_get_message(s,
1887 SSL3_ST_CR_CERT_REQ_A,
1888 SSL3_ST_CR_CERT_REQ_B,
1893 if (!ok) return((int)n);
1895 s->s3->tmp.cert_req=0;
1897 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1899 s->s3->tmp.reuse_message=1;
1900 /* If we get here we don't need any cached handshake records
1901 * as we wont be doing client auth.
1903 if (s->s3->handshake_buffer)
1905 if (!ssl3_digest_cached_records(s))
1911 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1913 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1914 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1918 /* TLS does not like anon-DH with client cert */
1919 if (s->version > SSL3_VERSION)
1921 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1923 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1924 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1929 p=d=(unsigned char *)s->init_msg;
1931 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1933 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1937 /* get the certificate types */
1939 if (s->cert->ctypes)
1941 OPENSSL_free(s->cert->ctypes);
1942 s->cert->ctypes = NULL;
1944 if (ctype_num > SSL3_CT_NUMBER)
1946 /* If we exceed static buffer copy all to cert structure */
1947 s->cert->ctypes = OPENSSL_malloc(ctype_num);
1948 memcpy(s->cert->ctypes, p, ctype_num);
1949 s->cert->ctype_num = (size_t)ctype_num;
1950 ctype_num=SSL3_CT_NUMBER;
1952 for (i=0; i<ctype_num; i++)
1953 s->s3->tmp.ctype[i]= p[i];
1955 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1958 /* Check we have enough room for signature algorithms and
1959 * following length value.
1961 if ((unsigned long)(p - d + llen + 2) > n)
1963 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1964 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
1967 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
1969 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1970 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
1976 /* get the CA RDNs */
1981 out=fopen("/tmp/vsign.der","w");
1982 fwrite(p,1,llen,out);
1987 if ((unsigned long)(p - d + llen) != n)
1989 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1990 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1994 for (nc=0; nc<llen; )
1997 if ((l+nc+2) > llen)
1999 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
2000 goto cont; /* netscape bugs */
2001 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2002 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
2008 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
2010 /* If netscape tolerance is on, ignore errors */
2011 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
2015 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2016 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
2023 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2024 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
2027 if (!sk_X509_NAME_push(ca_sk,xn))
2029 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
2043 /* we should setup a certificate to return.... */
2044 s->s3->tmp.cert_req=1;
2045 s->s3->tmp.ctype_num=ctype_num;
2046 if (s->s3->tmp.ca_names != NULL)
2047 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
2048 s->s3->tmp.ca_names=ca_sk;
2053 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
2057 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
2059 return(X509_NAME_cmp(*a,*b));
2061 #ifndef OPENSSL_NO_TLSEXT
2062 int ssl3_get_new_session_ticket(SSL *s)
2064 int ok,al,ret=0, ticklen;
2066 const unsigned char *p;
2069 n=s->method->ssl_get_message(s,
2070 SSL3_ST_CR_SESSION_TICKET_A,
2071 SSL3_ST_CR_SESSION_TICKET_B,
2079 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
2081 s->s3->tmp.reuse_message=1;
2084 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
2086 al=SSL_AD_UNEXPECTED_MESSAGE;
2087 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
2092 /* need at least ticket_lifetime_hint + ticket length */
2093 al = SSL_AD_DECODE_ERROR;
2094 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2098 p=d=(unsigned char *)s->init_msg;
2099 n2l(p, s->session->tlsext_tick_lifetime_hint);
2101 /* ticket_lifetime_hint + ticket_length + ticket */
2102 if (ticklen + 6 != n)
2104 al = SSL_AD_DECODE_ERROR;
2105 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2108 if (s->session->tlsext_tick)
2110 OPENSSL_free(s->session->tlsext_tick);
2111 s->session->tlsext_ticklen = 0;
2113 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2114 if (!s->session->tlsext_tick)
2116 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2119 memcpy(s->session->tlsext_tick, p, ticklen);
2120 s->session->tlsext_ticklen = ticklen;
2121 /* There are two ways to detect a resumed ticket sesion.
2122 * One is to set an appropriate session ID and then the server
2123 * must return a match in ServerHello. This allows the normal
2124 * client session ID matching to work and we know much
2125 * earlier that the ticket has been accepted.
2127 * The other way is to set zero length session ID when the
2128 * ticket is presented and rely on the handshake to determine
2129 * session resumption.
2131 * We choose the former approach because this fits in with
2132 * assumptions elsewhere in OpenSSL. The session ID is set
2133 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2136 EVP_Digest(p, ticklen,
2137 s->session->session_id, &s->session->session_id_length,
2138 #ifndef OPENSSL_NO_SHA256
2139 EVP_sha256(), NULL);
2146 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2151 int ssl3_get_cert_status(SSL *s)
2154 unsigned long resplen,n;
2155 const unsigned char *p;
2157 n=s->method->ssl_get_message(s,
2158 SSL3_ST_CR_CERT_STATUS_A,
2159 SSL3_ST_CR_CERT_STATUS_B,
2160 SSL3_MT_CERTIFICATE_STATUS,
2164 if (!ok) return((int)n);
2167 /* need at least status type + length */
2168 al = SSL_AD_DECODE_ERROR;
2169 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2172 p = (unsigned char *)s->init_msg;
2173 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2175 al = SSL_AD_DECODE_ERROR;
2176 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2180 if (resplen + 4 != n)
2182 al = SSL_AD_DECODE_ERROR;
2183 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2186 if (s->tlsext_ocsp_resp)
2187 OPENSSL_free(s->tlsext_ocsp_resp);
2188 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2189 if (!s->tlsext_ocsp_resp)
2191 al = SSL_AD_INTERNAL_ERROR;
2192 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2195 s->tlsext_ocsp_resplen = resplen;
2196 if (s->ctx->tlsext_status_cb)
2199 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2202 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2203 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2208 al = SSL_AD_INTERNAL_ERROR;
2209 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2215 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2220 int ssl3_get_server_done(SSL *s)
2225 n=s->method->ssl_get_message(s,
2226 SSL3_ST_CR_SRVR_DONE_A,
2227 SSL3_ST_CR_SRVR_DONE_B,
2228 SSL3_MT_SERVER_DONE,
2229 30, /* should be very small, like 0 :-) */
2232 if (!ok) return((int)n);
2235 /* should contain no data */
2236 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2237 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2245 int ssl3_send_client_key_exchange(SSL *s)
2247 unsigned char *p,*d;
2249 unsigned long alg_k;
2250 #ifndef OPENSSL_NO_RSA
2252 EVP_PKEY *pkey=NULL;
2254 #ifndef OPENSSL_NO_KRB5
2256 #endif /* OPENSSL_NO_KRB5 */
2257 #ifndef OPENSSL_NO_ECDH
2258 EC_KEY *clnt_ecdh = NULL;
2259 const EC_POINT *srvr_ecpoint = NULL;
2260 EVP_PKEY *srvr_pub_pkey = NULL;
2261 unsigned char *encodedPoint = NULL;
2262 int encoded_pt_len = 0;
2263 BN_CTX * bn_ctx = NULL;
2266 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2268 d=(unsigned char *)s->init_buf->data;
2271 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2273 /* Fool emacs indentation */
2275 #ifndef OPENSSL_NO_RSA
2276 else if (alg_k & SSL_kRSA)
2279 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2281 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2282 rsa=s->session->sess_cert->peer_rsa_tmp;
2285 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2286 if ((pkey == NULL) ||
2287 (pkey->type != EVP_PKEY_RSA) ||
2288 (pkey->pkey.rsa == NULL))
2290 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2294 EVP_PKEY_free(pkey);
2297 tmp_buf[0]=s->client_version>>8;
2298 tmp_buf[1]=s->client_version&0xff;
2299 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2302 s->session->master_key_length=sizeof tmp_buf;
2305 /* Fix buf for TLS and beyond */
2306 if (s->version > SSL3_VERSION)
2308 n=RSA_public_encrypt(sizeof tmp_buf,
2309 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2311 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2312 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2316 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2320 /* Fix buf for TLS and beyond */
2321 if (s->version > SSL3_VERSION)
2327 s->session->master_key_length=
2328 s->method->ssl3_enc->generate_master_secret(s,
2329 s->session->master_key,
2330 tmp_buf,sizeof tmp_buf);
2331 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2334 #ifndef OPENSSL_NO_KRB5
2335 else if (alg_k & SSL_kKRB5)
2337 krb5_error_code krb5rc;
2338 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2339 /* krb5_data krb5_ap_req; */
2340 krb5_data *enc_ticket;
2341 krb5_data authenticator, *authp = NULL;
2342 EVP_CIPHER_CTX ciph_ctx;
2343 const EVP_CIPHER *enc = NULL;
2344 unsigned char iv[EVP_MAX_IV_LENGTH];
2345 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2346 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2347 + EVP_MAX_IV_LENGTH];
2348 int padl, outl = sizeof(epms);
2350 EVP_CIPHER_CTX_init(&ciph_ctx);
2353 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2355 #endif /* KSSL_DEBUG */
2359 if (KRB5SENDAUTH) authp = &authenticator;
2360 #endif /* KRB5SENDAUTH */
2362 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2364 enc = kssl_map_enc(kssl_ctx->enctype);
2369 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2370 if (krb5rc && kssl_err.text)
2371 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2373 #endif /* KSSL_DEBUG */
2377 ssl3_send_alert(s,SSL3_AL_FATAL,
2378 SSL_AD_HANDSHAKE_FAILURE);
2379 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2384 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2385 ** in place of RFC 2712 KerberosWrapper, as in:
2387 ** Send ticket (copy to *p, set n = length)
2388 ** n = krb5_ap_req.length;
2389 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2390 ** if (krb5_ap_req.data)
2391 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2393 ** Now using real RFC 2712 KerberosWrapper
2394 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2395 ** Note: 2712 "opaque" types are here replaced
2396 ** with a 2-byte length followed by the value.
2398 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2399 ** Where "xx xx" = length bytes. Shown here with
2400 ** optional authenticator omitted.
2403 /* KerberosWrapper.Ticket */
2404 s2n(enc_ticket->length,p);
2405 memcpy(p, enc_ticket->data, enc_ticket->length);
2406 p+= enc_ticket->length;
2407 n = enc_ticket->length + 2;
2409 /* KerberosWrapper.Authenticator */
2410 if (authp && authp->length)
2412 s2n(authp->length,p);
2413 memcpy(p, authp->data, authp->length);
2415 n+= authp->length + 2;
2423 s2n(0,p);/* null authenticator length */
2427 tmp_buf[0]=s->client_version>>8;
2428 tmp_buf[1]=s->client_version&0xff;
2429 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2432 /* 20010420 VRS. Tried it this way; failed.
2433 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2434 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2435 ** kssl_ctx->length);
2436 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2439 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2440 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2442 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2444 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2446 if (outl > (int)sizeof epms)
2448 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2451 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2453 /* KerberosWrapper.EncryptedPreMasterSecret */
2455 memcpy(p, epms, outl);
2459 s->session->master_key_length=
2460 s->method->ssl3_enc->generate_master_secret(s,
2461 s->session->master_key,
2462 tmp_buf, sizeof tmp_buf);
2464 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2465 OPENSSL_cleanse(epms, outl);
2468 #ifndef OPENSSL_NO_DH
2469 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2471 DH *dh_srvr,*dh_clnt;
2472 SESS_CERT *scert = s->session->sess_cert;
2476 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2477 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2481 if (scert->peer_dh_tmp != NULL)
2482 dh_srvr=scert->peer_dh_tmp;
2485 /* we get them from the cert */
2486 int idx = scert->peer_cert_type;
2487 EVP_PKEY *spkey = NULL;
2490 spkey = X509_get_pubkey(
2491 scert->peer_pkeys[idx].x509);
2494 dh_srvr = EVP_PKEY_get1_DH(spkey);
2495 EVP_PKEY_free(spkey);
2497 if (dh_srvr == NULL)
2499 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2500 ERR_R_INTERNAL_ERROR);
2504 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
2506 /* Use client certificate key */
2507 EVP_PKEY *clkey = s->cert->key->privatekey;
2510 dh_clnt = EVP_PKEY_get1_DH(clkey);
2511 if (dh_clnt == NULL)
2513 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2514 ERR_R_INTERNAL_ERROR);
2520 /* generate a new random key */
2521 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2523 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2526 if (!DH_generate_key(dh_clnt))
2528 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2534 /* use the 'p' output buffer for the DH key, but
2535 * make sure to clear it out afterwards */
2537 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2538 if (scert->peer_dh_tmp == NULL)
2543 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2548 /* generate master key from the result */
2549 s->session->master_key_length=
2550 s->method->ssl3_enc->generate_master_secret(s,
2551 s->session->master_key,p,n);
2555 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
2559 /* send off the data */
2560 n=BN_num_bytes(dh_clnt->pub_key);
2562 BN_bn2bin(dh_clnt->pub_key,p);
2568 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2572 #ifndef OPENSSL_NO_ECDH
2573 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2575 const EC_GROUP *srvr_group = NULL;
2577 int ecdh_clnt_cert = 0;
2580 /* Did we send out the client's
2581 * ECDH share for use in premaster
2582 * computation as part of client certificate?
2583 * If so, set ecdh_clnt_cert to 1.
2585 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2587 /* XXX: For now, we do not support client
2588 * authentication using ECDH certificates.
2589 * To add such support, one needs to add
2590 * code that checks for appropriate
2591 * conditions and sets ecdh_clnt_cert to 1.
2592 * For example, the cert have an ECC
2593 * key on the same curve as the server's
2594 * and the key should be authorized for
2597 * One also needs to add code in ssl3_connect
2598 * to skip sending the certificate verify
2601 * if ((s->cert->key->privatekey != NULL) &&
2602 * (s->cert->key->privatekey->type ==
2603 * EVP_PKEY_EC) && ...)
2604 * ecdh_clnt_cert = 1;
2608 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2610 tkey = s->session->sess_cert->peer_ecdh_tmp;
2614 /* Get the Server Public Key from Cert */
2615 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2616 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2617 if ((srvr_pub_pkey == NULL) ||
2618 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2619 (srvr_pub_pkey->pkey.ec == NULL))
2621 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2622 ERR_R_INTERNAL_ERROR);
2626 tkey = srvr_pub_pkey->pkey.ec;
2629 srvr_group = EC_KEY_get0_group(tkey);
2630 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2632 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2634 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2635 ERR_R_INTERNAL_ERROR);
2639 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2641 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2645 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2647 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2652 /* Reuse key info from our certificate
2653 * We only need our private key to perform
2654 * the ECDH computation.
2656 const BIGNUM *priv_key;
2657 tkey = s->cert->key->privatekey->pkey.ec;
2658 priv_key = EC_KEY_get0_private_key(tkey);
2659 if (priv_key == NULL)
2661 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2664 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2666 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2672 /* Generate a new ECDH key pair */
2673 if (!(EC_KEY_generate_key(clnt_ecdh)))
2675 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2680 /* use the 'p' output buffer for the ECDH key, but
2681 * make sure to clear it out afterwards
2684 field_size = EC_GROUP_get_degree(srvr_group);
2685 if (field_size <= 0)
2687 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2691 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2694 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2699 /* generate master key from the result */
2700 s->session->master_key_length = s->method->ssl3_enc \
2701 -> generate_master_secret(s,
2702 s->session->master_key,
2705 memset(p, 0, n); /* clean up */
2709 /* Send empty client key exch message */
2714 /* First check the size of encoding and
2715 * allocate memory accordingly.
2718 EC_POINT_point2oct(srvr_group,
2719 EC_KEY_get0_public_key(clnt_ecdh),
2720 POINT_CONVERSION_UNCOMPRESSED,
2723 encodedPoint = (unsigned char *)
2724 OPENSSL_malloc(encoded_pt_len *
2725 sizeof(unsigned char));
2726 bn_ctx = BN_CTX_new();
2727 if ((encodedPoint == NULL) ||
2730 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2734 /* Encode the public key */
2735 n = EC_POINT_point2oct(srvr_group,
2736 EC_KEY_get0_public_key(clnt_ecdh),
2737 POINT_CONVERSION_UNCOMPRESSED,
2738 encodedPoint, encoded_pt_len, bn_ctx);
2740 *p = n; /* length of encoded point */
2741 /* Encoded point will be copied here */
2743 /* copy the point */
2744 memcpy((unsigned char *)p, encodedPoint, n);
2745 /* increment n to account for length field */
2749 /* Free allocated memory */
2750 BN_CTX_free(bn_ctx);
2751 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2752 if (clnt_ecdh != NULL)
2753 EC_KEY_free(clnt_ecdh);
2754 EVP_PKEY_free(srvr_pub_pkey);
2756 #endif /* !OPENSSL_NO_ECDH */
2757 else if (alg_k & SSL_kGOST)
2759 /* GOST key exchange message creation */
2760 EVP_PKEY_CTX *pkey_ctx;
2763 unsigned int md_len;
2765 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2766 EVP_MD_CTX *ukm_hash;
2769 /* Get server sertificate PKEY and create ctx from it */
2770 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2772 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2774 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2778 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2779 /* If we have send a certificate, and certificate key
2781 * parameters match those of server certificate, use
2782 * certificate key for key exchange
2785 /* Otherwise, generate ephemeral key pair */
2787 EVP_PKEY_encrypt_init(pkey_ctx);
2788 /* Generate session key */
2789 RAND_bytes(premaster_secret,32);
2790 /* If we have client certificate, use its secret as peer key */
2791 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2792 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2793 /* If there was an error - just ignore it. Ephemeral key
2799 /* Compute shared IV and store it in algorithm-specific
2801 ukm_hash = EVP_MD_CTX_create();
2802 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2803 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2804 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2805 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2806 EVP_MD_CTX_destroy(ukm_hash);
2807 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2809 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2813 /* Make GOST keytransport blob message */
2814 /*Encapsulate it into sequence */
2815 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2817 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2818 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2825 *(p++)= msglen & 0xff;
2830 *(p++)= msglen & 0xff;
2833 memcpy(p, tmp, msglen);
2834 /* Check if pubkey from client certificate was used */
2835 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2837 /* Set flag "skip certificate verify" */
2838 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2840 EVP_PKEY_CTX_free(pkey_ctx);
2841 s->session->master_key_length=
2842 s->method->ssl3_enc->generate_master_secret(s,
2843 s->session->master_key,premaster_secret,32);
2844 EVP_PKEY_free(pub_key);
2847 #ifndef OPENSSL_NO_SRP
2848 else if (alg_k & SSL_kSRP)
2850 if (s->srp_ctx.A != NULL)
2852 /* send off the data */
2853 n=BN_num_bytes(s->srp_ctx.A);
2855 BN_bn2bin(s->srp_ctx.A,p);
2860 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2863 if (s->session->srp_username != NULL)
2864 OPENSSL_free(s->session->srp_username);
2865 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2866 if (s->session->srp_username == NULL)
2868 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2869 ERR_R_MALLOC_FAILURE);
2873 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2875 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2880 #ifndef OPENSSL_NO_PSK
2881 else if (alg_k & SSL_kPSK)
2883 char identity[PSK_MAX_IDENTITY_LEN];
2884 unsigned char *t = NULL;
2885 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2886 unsigned int pre_ms_len = 0, psk_len = 0;
2890 if (s->psk_client_callback == NULL)
2892 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2893 SSL_R_PSK_NO_CLIENT_CB);
2897 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2898 identity, PSK_MAX_IDENTITY_LEN,
2899 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2900 if (psk_len > PSK_MAX_PSK_LEN)
2902 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2903 ERR_R_INTERNAL_ERROR);
2906 else if (psk_len == 0)
2908 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2909 SSL_R_PSK_IDENTITY_NOT_FOUND);
2913 /* create PSK pre_master_secret */
2914 pre_ms_len = 2+psk_len+2+psk_len;
2916 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2918 memset(t, 0, psk_len);
2922 if (s->session->psk_identity_hint != NULL)
2923 OPENSSL_free(s->session->psk_identity_hint);
2924 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2925 if (s->ctx->psk_identity_hint != NULL &&
2926 s->session->psk_identity_hint == NULL)
2928 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2929 ERR_R_MALLOC_FAILURE);
2933 if (s->session->psk_identity != NULL)
2934 OPENSSL_free(s->session->psk_identity);
2935 s->session->psk_identity = BUF_strdup(identity);
2936 if (s->session->psk_identity == NULL)
2938 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2939 ERR_R_MALLOC_FAILURE);
2943 s->session->master_key_length =
2944 s->method->ssl3_enc->generate_master_secret(s,
2945 s->session->master_key,
2946 psk_or_pre_ms, pre_ms_len);
2947 n = strlen(identity);
2949 memcpy(p, identity, n);
2953 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2954 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2957 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2964 ssl3_send_alert(s, SSL3_AL_FATAL,
2965 SSL_AD_HANDSHAKE_FAILURE);
2966 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2967 ERR_R_INTERNAL_ERROR);
2971 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2974 s->state=SSL3_ST_CW_KEY_EXCH_B;
2975 /* number of bytes to write */
2980 /* SSL3_ST_CW_KEY_EXCH_B */
2981 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2983 #ifndef OPENSSL_NO_ECDH
2984 BN_CTX_free(bn_ctx);
2985 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2986 if (clnt_ecdh != NULL)
2987 EC_KEY_free(clnt_ecdh);
2988 EVP_PKEY_free(srvr_pub_pkey);
2993 int ssl3_send_client_verify(SSL *s)
2995 unsigned char *p,*d;
2996 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2998 EVP_PKEY_CTX *pctx=NULL;
3004 EVP_MD_CTX_init(&mctx);
3006 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
3008 d=(unsigned char *)s->init_buf->data;
3010 pkey=s->cert->key->privatekey;
3011 /* Create context from key and test if sha1 is allowed as digest */
3012 pctx = EVP_PKEY_CTX_new(pkey,NULL);
3013 EVP_PKEY_sign_init(pctx);
3014 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
3016 if (TLS1_get_version(s) < TLS1_2_VERSION)
3017 s->method->ssl3_enc->cert_verify_mac(s,
3019 &(data[MD5_DIGEST_LENGTH]));
3025 /* For TLS v1.2 send signature algorithm and signature
3026 * using agreed digest and cached handshake records.
3028 if (TLS1_get_version(s) >= TLS1_2_VERSION)
3032 const EVP_MD *md = s->cert->key->digest;
3033 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
3035 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
3037 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3038 ERR_R_INTERNAL_ERROR);
3043 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
3046 if (!EVP_SignInit_ex(&mctx, md, NULL)
3047 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
3048 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
3050 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3056 if (!ssl3_digest_cached_records(s))
3060 #ifndef OPENSSL_NO_RSA
3061 if (pkey->type == EVP_PKEY_RSA)
3063 s->method->ssl3_enc->cert_verify_mac(s,
3066 if (RSA_sign(NID_md5_sha1, data,
3067 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
3068 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
3070 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
3078 #ifndef OPENSSL_NO_DSA
3079 if (pkey->type == EVP_PKEY_DSA)
3081 if (!DSA_sign(pkey->save_type,
3082 &(data[MD5_DIGEST_LENGTH]),
3083 SHA_DIGEST_LENGTH,&(p[2]),
3084 (unsigned int *)&j,pkey->pkey.dsa))
3086 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
3094 #ifndef OPENSSL_NO_ECDSA
3095 if (pkey->type == EVP_PKEY_EC)
3097 if (!ECDSA_sign(pkey->save_type,
3098 &(data[MD5_DIGEST_LENGTH]),
3099 SHA_DIGEST_LENGTH,&(p[2]),
3100 (unsigned int *)&j,pkey->pkey.ec))
3102 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3111 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
3113 unsigned char signbuf[64];
3116 s->method->ssl3_enc->cert_verify_mac(s,
3117 NID_id_GostR3411_94,
3119 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
3120 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3121 ERR_R_INTERNAL_ERROR);
3124 for (i=63,j=0; i>=0; j++, i--) {
3132 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
3135 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
3138 s->state=SSL3_ST_CW_CERT_VRFY_B;
3139 s->init_num=(int)n+4;
3142 EVP_MD_CTX_cleanup(&mctx);
3143 EVP_PKEY_CTX_free(pctx);
3144 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3146 EVP_MD_CTX_cleanup(&mctx);
3147 EVP_PKEY_CTX_free(pctx);
3151 /* Check a certificate can be used for client authentication. Currently
3152 * just check cert exists and if static DH client certificates can be used.
3154 static int ssl3_check_client_certificate(SSL *s)
3156 unsigned long alg_k;
3157 if (!s->cert || !s->cert->key->x509 || !s->cert->key->privatekey)
3159 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3160 /* See if we can use client certificate for fixed DH */
3161 if (alg_k & (SSL_kDHr|SSL_kDHd))
3163 SESS_CERT *scert = s->session->sess_cert;
3164 int i = scert->peer_cert_type;
3165 EVP_PKEY *clkey = NULL, *spkey = NULL;
3166 clkey = s->cert->key->privatekey;
3167 /* If client key not DH assume it can be used */
3168 if (EVP_PKEY_id(clkey) != EVP_PKEY_DH)
3171 spkey = X509_get_pubkey(scert->peer_pkeys[i].x509);
3174 /* Compare server and client parameters */
3175 i = EVP_PKEY_cmp_parameters(clkey, spkey);
3176 EVP_PKEY_free(spkey);
3180 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
3185 int ssl3_send_client_certificate(SSL *s)
3188 EVP_PKEY *pkey=NULL;
3192 if (s->state == SSL3_ST_CW_CERT_A)
3194 /* Let cert callback update client certificates if required */
3195 if (s->cert->cert_cb
3196 && s->cert->cert_cb(s, s->cert->cert_cb_arg) <= 0)
3198 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
3201 if (ssl3_check_client_certificate(s))
3202 s->state=SSL3_ST_CW_CERT_C;
3204 s->state=SSL3_ST_CW_CERT_B;
3207 /* We need to get a client cert */
3208 if (s->state == SSL3_ST_CW_CERT_B)
3210 /* If we get an error, we need to
3211 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3212 * We then get retied later */
3214 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3217 s->rwstate=SSL_X509_LOOKUP;
3220 s->rwstate=SSL_NOTHING;
3221 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3223 s->state=SSL3_ST_CW_CERT_B;
3224 if ( !SSL_use_certificate(s,x509) ||
3225 !SSL_use_PrivateKey(s,pkey))
3231 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3234 if (x509 != NULL) X509_free(x509);
3235 if (pkey != NULL) EVP_PKEY_free(pkey);
3236 if (i && !ssl3_check_client_certificate(s))
3240 if (s->version == SSL3_VERSION)
3242 s->s3->tmp.cert_req=0;
3243 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3248 s->s3->tmp.cert_req=2;
3252 /* Ok, we have a cert */
3253 s->state=SSL3_ST_CW_CERT_C;
3256 if (s->state == SSL3_ST_CW_CERT_C)
3258 s->state=SSL3_ST_CW_CERT_D;
3259 l=ssl3_output_cert_chain(s,
3260 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key);
3264 /* SSL3_ST_CW_CERT_D */
3265 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3268 #define has_bits(i,m) (((i)&(m)) == (m))
3270 int ssl3_check_cert_and_algorithm(SSL *s)
3274 EVP_PKEY *pkey=NULL;
3276 #ifndef OPENSSL_NO_RSA
3279 #ifndef OPENSSL_NO_DH
3283 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3284 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3286 /* we don't have a certificate */
3287 if ((alg_a & (SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3290 sc=s->session->sess_cert;
3293 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3297 #ifndef OPENSSL_NO_RSA
3298 rsa=s->session->sess_cert->peer_rsa_tmp;
3300 #ifndef OPENSSL_NO_DH
3301 dh=s->session->sess_cert->peer_dh_tmp;
3304 /* This is the passed certificate */
3306 idx=sc->peer_cert_type;
3307 #ifndef OPENSSL_NO_ECDH
3308 if (idx == SSL_PKEY_ECC)
3310 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3312 { /* check failed */
3313 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3322 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3323 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3324 EVP_PKEY_free(pkey);
3327 /* Check that we have a certificate if we require one */
3328 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3330 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3333 #ifndef OPENSSL_NO_DSA
3334 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3336 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3340 #ifndef OPENSSL_NO_RSA
3341 if ((alg_k & SSL_kRSA) &&
3342 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3344 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3348 #ifndef OPENSSL_NO_DH
3349 if ((alg_k & SSL_kEDH) &&
3350 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3352 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3355 else if ((alg_k & SSL_kDHr) && (TLS1_get_version(s) < TLS1_2_VERSION) &&
3356 !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3358 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3361 #ifndef OPENSSL_NO_DSA
3362 else if ((alg_k & SSL_kDHd) && (TLS1_get_version(s) < TLS1_2_VERSION) &&
3363 !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3365 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3371 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3373 #ifndef OPENSSL_NO_RSA
3374 if (alg_k & SSL_kRSA)
3377 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3379 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3385 #ifndef OPENSSL_NO_DH
3386 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3389 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3391 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3398 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3404 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3409 /* Check to see if handshake is full or resumed. Usually this is just a
3410 * case of checking to see if a cache hit has occurred. In the case of
3411 * session tickets we have to check the next message to be sure.
3414 #ifndef OPENSSL_NO_TLSEXT
3415 # ifndef OPENSSL_NO_NEXTPROTONEG
3416 int ssl3_send_next_proto(SSL *s)
3418 unsigned int len, padding_len;
3421 if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
3423 len = s->next_proto_negotiated_len;
3424 padding_len = 32 - ((len + 2) % 32);
3425 d = (unsigned char *)s->init_buf->data;
3427 memcpy(d + 5, s->next_proto_negotiated, len);
3428 d[5 + len] = padding_len;
3429 memset(d + 6 + len, 0, padding_len);
3430 *(d++)=SSL3_MT_NEXT_PROTO;
3431 l2n3(2 + len + padding_len, d);
3432 s->state = SSL3_ST_CW_NEXT_PROTO_B;
3433 s->init_num = 4 + 2 + len + padding_len;
3437 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3441 int ssl3_check_finished(SSL *s)
3445 /* If we have no ticket it cannot be a resumed session. */
3446 if (!s->session->tlsext_tick)
3448 /* this function is called when we really expect a Certificate
3449 * message, so permit appropriate message length */
3450 n=s->method->ssl_get_message(s,
3456 if (!ok) return((int)n);
3457 s->s3->tmp.reuse_message = 1;
3458 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3459 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3466 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3469 #ifndef OPENSSL_NO_ENGINE
3470 if (s->ctx->client_cert_engine)
3472 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3473 SSL_get_client_CA_list(s),
3474 px509, ppkey, NULL, NULL, NULL);
3479 if (s->ctx->client_cert_cb)
3480 i = s->ctx->client_cert_cb(s,px509,ppkey);
3484 #ifndef OPENSSL_NO_TLSEXT
3485 int tls1_get_server_supplemental_data(SSL *s)
3489 unsigned long supp_data_len, authz_data_len;
3491 unsigned short supp_data_type, authz_data_type, proof_len;
3492 const unsigned char *p;
3493 unsigned char *new_proof;
3495 n=s->method->ssl_get_message(s,
3496 SSL3_ST_CR_SUPPLEMENTAL_DATA_A,
3497 SSL3_ST_CR_SUPPLEMENTAL_DATA_B,
3498 SSL3_MT_SUPPLEMENTAL_DATA,
3499 /* use default limit */
3500 TLSEXT_MAXLEN_supplemental_data,
3503 if (!ok) return((int)n);
3505 p = (unsigned char *)s->init_msg;
3507 /* The message cannot be empty */
3510 al = SSL_AD_DECODE_ERROR;
3511 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3514 /* Length of supplemental data */
3515 n2l3(p,supp_data_len);
3517 /* We must have at least one supplemental data entry
3518 * with type (1 byte) and length (2 bytes). */
3519 if (supp_data_len != (unsigned long) n || n < 4)
3521 al = SSL_AD_DECODE_ERROR;
3522 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3525 /* Supplemental data type: must be authz_data */
3526 n2s(p,supp_data_type);
3528 if (supp_data_type != TLSEXT_SUPPLEMENTALDATATYPE_authz_data)
3530 al = SSL_AD_UNEXPECTED_MESSAGE;
3531 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_UNKNOWN_SUPPLEMENTAL_DATA_TYPE);
3534 /* Authz data length */
3535 n2s(p, authz_data_len);
3537 if (authz_data_len != (unsigned long) n || n < 1)
3539 al = SSL_AD_DECODE_ERROR;
3540 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3543 /* Authz data type: must be audit_proof */
3544 authz_data_type = *(p++);
3546 if (authz_data_type != TLSEXT_AUTHZDATAFORMAT_audit_proof)
3548 al=SSL_AD_UNEXPECTED_MESSAGE;
3549 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_UNKNOWN_AUTHZ_DATA_TYPE);
3552 /* We have a proof: read its length */
3555 al = SSL_AD_DECODE_ERROR;
3556 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3561 if (proof_len != (unsigned long) n)
3563 al = SSL_AD_DECODE_ERROR;
3564 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3567 /* Store the proof */
3568 new_proof = OPENSSL_realloc(s->session->audit_proof,
3570 if (new_proof == NULL)
3572 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,ERR_R_MALLOC_FAILURE);
3575 s->session->audit_proof_length = proof_len;
3576 s->session->audit_proof = new_proof;
3577 memcpy(s->session->audit_proof, p, proof_len);
3579 /* Got the proof, but can't verify it yet. */
3582 ssl3_send_alert(s,SSL3_AL_FATAL,al);