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 int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
172 #ifndef OPENSSL_NO_SSL3_METHOD
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)
187 int ssl3_connect(SSL *s)
190 unsigned long Time=(unsigned long)time(NULL);
191 void (*cb)(const SSL *ssl,int type,int val)=NULL;
193 int new_state,state,skip=0;
195 RAND_add(&Time,sizeof(Time),0);
199 if (s->info_callback != NULL)
201 else if (s->ctx->info_callback != NULL)
202 cb=s->ctx->info_callback;
205 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
207 #ifndef OPENSSL_NO_HEARTBEATS
208 /* If we're awaiting a HeartbeatResponse, pretend we
209 * already got and don't await it anymore, because
210 * Heartbeats don't make sense during handshakes anyway.
212 if (s->tlsext_hb_pending)
214 s->tlsext_hb_pending = 0;
225 case SSL_ST_RENEGOTIATE:
227 s->state=SSL_ST_CONNECT;
228 s->ctx->stats.sess_connect_renegotiate++;
232 case SSL_ST_BEFORE|SSL_ST_CONNECT:
233 case SSL_ST_OK|SSL_ST_CONNECT:
236 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
238 if ((s->version & 0xff00 ) != 0x0300)
240 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
245 /* s->version=SSL3_VERSION; */
246 s->type=SSL_ST_CONNECT;
248 if (s->init_buf == NULL)
250 if ((buf=BUF_MEM_new()) == NULL)
255 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
264 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
266 /* setup buffing BIO */
267 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
269 /* don't push the buffering BIO quite yet */
271 ssl3_init_finished_mac(s);
273 s->state=SSL3_ST_CW_CLNT_HELLO_A;
274 s->ctx->stats.sess_connect++;
276 s->s3->flags &= ~SSL3_FLAGS_CCS_OK;
277 /* Should have been reset by ssl3_get_finished, too. */
278 s->s3->change_cipher_spec = 0;
281 case SSL3_ST_CW_CLNT_HELLO_A:
282 case SSL3_ST_CW_CLNT_HELLO_B:
285 ret=ssl3_client_hello(s);
286 if (ret <= 0) goto end;
287 s->state=SSL3_ST_CR_SRVR_HELLO_A;
290 /* turn on buffering for the next lot of output */
291 if (s->bbio != s->wbio)
292 s->wbio=BIO_push(s->bbio,s->wbio);
296 case SSL3_ST_CR_SRVR_HELLO_A:
297 case SSL3_ST_CR_SRVR_HELLO_B:
298 ret=ssl3_get_server_hello(s);
299 if (ret <= 0) goto end;
303 s->state=SSL3_ST_CR_FINISHED_A;
304 #ifndef OPENSSL_NO_TLSEXT
305 if (s->tlsext_ticket_expected)
307 /* receive renewed session ticket */
308 s->state=SSL3_ST_CR_SESSION_TICKET_A;
313 s->state=SSL3_ST_CR_CERT_A;
317 case SSL3_ST_CR_CERT_A:
318 case SSL3_ST_CR_CERT_B:
319 /* Check if it is anon DH/ECDH, SRP auth */
321 if (!(s->s3->tmp.new_cipher->algorithm_auth & (SSL_aNULL|SSL_aSRP)) &&
322 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
324 ret=ssl3_get_server_certificate(s);
325 if (ret <= 0) goto end;
326 #ifndef OPENSSL_NO_TLSEXT
327 if (s->tlsext_status_expected)
328 s->state=SSL3_ST_CR_CERT_STATUS_A;
330 s->state=SSL3_ST_CR_KEY_EXCH_A;
335 s->state=SSL3_ST_CR_KEY_EXCH_A;
342 s->state=SSL3_ST_CR_KEY_EXCH_A;
347 case SSL3_ST_CR_KEY_EXCH_A:
348 case SSL3_ST_CR_KEY_EXCH_B:
349 ret=ssl3_get_key_exchange(s);
350 if (ret <= 0) goto end;
351 s->state=SSL3_ST_CR_CERT_REQ_A;
354 /* at this point we check that we have the
355 * required stuff from the server */
356 if (!ssl3_check_cert_and_algorithm(s))
363 case SSL3_ST_CR_CERT_REQ_A:
364 case SSL3_ST_CR_CERT_REQ_B:
365 ret=ssl3_get_certificate_request(s);
366 if (ret <= 0) goto end;
367 s->state=SSL3_ST_CR_SRVR_DONE_A;
371 case SSL3_ST_CR_SRVR_DONE_A:
372 case SSL3_ST_CR_SRVR_DONE_B:
373 ret=ssl3_get_server_done(s);
374 if (ret <= 0) goto end;
375 #ifndef OPENSSL_NO_SRP
376 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP)
378 if ((ret = SRP_Calc_A_param(s))<=0)
380 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SRP_A_CALC);
381 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
386 if (s->s3->tmp.cert_req)
387 s->state=SSL3_ST_CW_CERT_A;
389 s->state=SSL3_ST_CW_KEY_EXCH_A;
394 case SSL3_ST_CW_CERT_A:
395 case SSL3_ST_CW_CERT_B:
396 case SSL3_ST_CW_CERT_C:
397 case SSL3_ST_CW_CERT_D:
398 ret=ssl3_send_client_certificate(s);
399 if (ret <= 0) goto end;
400 s->state=SSL3_ST_CW_KEY_EXCH_A;
404 case SSL3_ST_CW_KEY_EXCH_A:
405 case SSL3_ST_CW_KEY_EXCH_B:
406 ret=ssl3_send_client_key_exchange(s);
407 if (ret <= 0) goto end;
408 /* EAY EAY EAY need to check for DH fix cert
410 /* For TLS, cert_req is set to 2, so a cert chain
411 * of nothing is sent, but no verify packet is sent */
412 /* XXX: For now, we do not support client
413 * authentication in ECDH cipher suites with
414 * ECDH (rather than ECDSA) certificates.
415 * We need to skip the certificate verify
416 * message when client's ECDH public key is sent
417 * inside the client certificate.
419 if (s->s3->tmp.cert_req == 1)
421 s->state=SSL3_ST_CW_CERT_VRFY_A;
425 s->state=SSL3_ST_CW_CHANGE_A;
427 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
429 s->state=SSL3_ST_CW_CHANGE_A;
435 case SSL3_ST_CW_CERT_VRFY_A:
436 case SSL3_ST_CW_CERT_VRFY_B:
437 ret=ssl3_send_client_verify(s);
438 if (ret <= 0) goto end;
439 s->state=SSL3_ST_CW_CHANGE_A;
443 case SSL3_ST_CW_CHANGE_A:
444 case SSL3_ST_CW_CHANGE_B:
445 ret=ssl3_send_change_cipher_spec(s,
446 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
447 if (ret <= 0) goto end;
449 #if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
450 s->state=SSL3_ST_CW_FINISHED_A;
452 if (s->s3->next_proto_neg_seen)
453 s->state=SSL3_ST_CW_NEXT_PROTO_A;
455 s->state=SSL3_ST_CW_FINISHED_A;
459 s->session->cipher=s->s3->tmp.new_cipher;
460 #ifdef OPENSSL_NO_COMP
461 s->session->compress_meth=0;
463 if (s->s3->tmp.new_compression == NULL)
464 s->session->compress_meth=0;
466 s->session->compress_meth=
467 s->s3->tmp.new_compression->id;
469 if (!s->method->ssl3_enc->setup_key_block(s))
475 if (!s->method->ssl3_enc->change_cipher_state(s,
476 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
484 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
485 case SSL3_ST_CW_NEXT_PROTO_A:
486 case SSL3_ST_CW_NEXT_PROTO_B:
487 ret=ssl3_send_next_proto(s);
488 if (ret <= 0) goto end;
489 s->state=SSL3_ST_CW_FINISHED_A;
493 case SSL3_ST_CW_FINISHED_A:
494 case SSL3_ST_CW_FINISHED_B:
495 ret=ssl3_send_finished(s,
496 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
497 s->method->ssl3_enc->client_finished_label,
498 s->method->ssl3_enc->client_finished_label_len);
499 if (ret <= 0) goto end;
500 s->state=SSL3_ST_CW_FLUSH;
503 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
506 s->s3->tmp.next_state=SSL_ST_OK;
507 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
510 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
511 s->s3->delay_buf_pop_ret=0;
516 #ifndef OPENSSL_NO_TLSEXT
517 /* Allow NewSessionTicket if ticket expected */
518 if (s->tlsext_ticket_expected)
519 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
523 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
528 #ifndef OPENSSL_NO_TLSEXT
529 case SSL3_ST_CR_SESSION_TICKET_A:
530 case SSL3_ST_CR_SESSION_TICKET_B:
531 ret=ssl3_get_new_session_ticket(s);
532 if (ret <= 0) goto end;
533 s->state=SSL3_ST_CR_FINISHED_A;
537 case SSL3_ST_CR_CERT_STATUS_A:
538 case SSL3_ST_CR_CERT_STATUS_B:
539 ret=ssl3_get_cert_status(s);
540 if (ret <= 0) goto end;
541 s->state=SSL3_ST_CR_KEY_EXCH_A;
546 case SSL3_ST_CR_FINISHED_A:
547 case SSL3_ST_CR_FINISHED_B:
548 s->s3->flags |= SSL3_FLAGS_CCS_OK;
549 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
550 SSL3_ST_CR_FINISHED_B);
551 if (ret <= 0) goto end;
554 s->state=SSL3_ST_CW_CHANGE_A;
560 case SSL3_ST_CW_FLUSH:
561 s->rwstate=SSL_WRITING;
562 if (BIO_flush(s->wbio) <= 0)
567 s->rwstate=SSL_NOTHING;
568 s->state=s->s3->tmp.next_state;
572 /* clean a few things up */
573 ssl3_cleanup_key_block(s);
575 if (s->init_buf != NULL)
577 BUF_MEM_free(s->init_buf);
581 /* If we are not 'joining' the last two packets,
582 * remove the buffering now */
583 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
584 ssl_free_wbio_buffer(s);
585 /* else do it later in ssl3_write */
591 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
592 if (s->hit) s->ctx->stats.sess_hit++;
596 s->handshake_func=ssl3_connect;
597 s->ctx->stats.sess_connect_good++;
599 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
605 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
611 /* did we do anything */
612 if (!s->s3->tmp.reuse_message && !skip)
616 if ((ret=BIO_flush(s->wbio)) <= 0)
620 if ((cb != NULL) && (s->state != state))
624 cb(s,SSL_CB_CONNECT_LOOP,1);
635 cb(s,SSL_CB_CONNECT_EXIT,ret);
640 int ssl3_client_hello(SSL *s)
646 #ifndef OPENSSL_NO_COMP
651 buf=(unsigned char *)s->init_buf->data;
652 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
654 SSL_SESSION *sess = s->session;
655 if ((sess == NULL) ||
656 (sess->ssl_version != s->version) ||
657 !sess->session_id_length ||
658 (sess->not_resumable))
660 if (!ssl_get_new_session(s,0))
663 /* else use the pre-loaded session */
665 p=s->s3->client_random;
667 if (ssl_fill_hello_random(s, 0, p, SSL3_RANDOM_SIZE) <= 0)
670 /* Do the message type and length last */
673 /* version indicates the negotiated version: for example from
674 * an SSLv2/v3 compatible client hello). The client_version
675 * field is the maximum version we permit and it is also
676 * used in RSA encrypted premaster secrets. Some servers can
677 * choke if we initially report a higher version then
678 * renegotiate to a lower one in the premaster secret. This
679 * didn't happen with TLS 1.0 as most servers supported it
680 * but it can with TLS 1.1 or later if the server only supports
683 * Possible scenario with previous logic:
684 * 1. Client hello indicates TLS 1.2
685 * 2. Server hello says TLS 1.0
686 * 3. RSA encrypted premaster secret uses 1.2.
687 * 4. Handhaked proceeds using TLS 1.0.
688 * 5. Server sends hello request to renegotiate.
689 * 6. Client hello indicates TLS v1.0 as we now
690 * know that is maximum server supports.
691 * 7. Server chokes on RSA encrypted premaster secret
692 * containing version 1.0.
694 * For interoperability it should be OK to always use the
695 * maximum version we support in client hello and then rely
696 * on the checking of version to ensure the servers isn't
697 * being inconsistent: for example initially negotiating with
698 * TLS 1.0 and renegotiating with TLS 1.2. We do this by using
699 * client_version in client hello and not resetting it to
700 * the negotiated version.
703 *(p++)=s->version>>8;
704 *(p++)=s->version&0xff;
705 s->client_version=s->version;
707 *(p++)=s->client_version>>8;
708 *(p++)=s->client_version&0xff;
712 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
719 i=s->session->session_id_length;
723 if (i > (int)sizeof(s->session->session_id))
725 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
728 memcpy(p,s->session->session_id,i);
732 /* Ciphers supported */
733 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
736 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
739 #ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
740 /* Some servers hang if client hello > 256 bytes
741 * as hack workaround chop number of supported ciphers
742 * to keep it well below this if we use TLS v1.2
744 if (TLS1_get_version(s) >= TLS1_2_VERSION
745 && i > OPENSSL_MAX_TLS1_2_CIPHER_LENGTH)
746 i = OPENSSL_MAX_TLS1_2_CIPHER_LENGTH & ~1;
752 #ifdef OPENSSL_NO_COMP
756 if ((s->options & SSL_OP_NO_COMPRESSION)
757 || !s->ctx->comp_methods)
760 j=sk_SSL_COMP_num(s->ctx->comp_methods);
764 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
768 *(p++)=0; /* Add the NULL method */
770 #ifndef OPENSSL_NO_TLSEXT
772 if (ssl_prepare_clienthello_tlsext(s) <= 0)
774 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
777 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
779 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
786 *(d++)=SSL3_MT_CLIENT_HELLO;
789 s->state=SSL3_ST_CW_CLNT_HELLO_B;
790 /* number of bytes to write */
795 /* SSL3_ST_CW_CLNT_HELLO_B */
796 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
801 int ssl3_get_server_hello(SSL *s)
803 STACK_OF(SSL_CIPHER) *sk;
809 #ifndef OPENSSL_NO_COMP
813 n=s->method->ssl_get_message(s,
814 SSL3_ST_CR_SRVR_HELLO_A,
815 SSL3_ST_CR_SRVR_HELLO_B,
820 if (!ok) return((int)n);
822 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
824 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
826 if ( s->d1->send_cookie == 0)
828 s->s3->tmp.reuse_message = 1;
831 else /* already sent a cookie */
833 al=SSL_AD_UNEXPECTED_MESSAGE;
834 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
840 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
842 al=SSL_AD_UNEXPECTED_MESSAGE;
843 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
847 d=p=(unsigned char *)s->init_msg;
849 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
851 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
852 s->version=(s->version&0xff00)|p[1];
853 al=SSL_AD_PROTOCOL_VERSION;
858 /* load the server hello data */
859 /* load the server random */
860 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
865 /* get the session-id */
868 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
870 al=SSL_AD_ILLEGAL_PARAMETER;
871 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
875 #ifndef OPENSSL_NO_TLSEXT
876 /* check if we want to resume the session based on external pre-shared secret */
877 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
879 SSL_CIPHER *pref_cipher=NULL;
880 s->session->master_key_length=sizeof(s->session->master_key);
881 if (s->tls_session_secret_cb(s, s->session->master_key,
882 &s->session->master_key_length,
884 s->tls_session_secret_cb_arg))
886 s->session->cipher = pref_cipher ?
887 pref_cipher : ssl_get_cipher_by_char(s, p+j);
891 #endif /* OPENSSL_NO_TLSEXT */
893 if (!s->hit && j != 0 && j == s->session->session_id_length
894 && memcmp(p,s->session->session_id,j) == 0)
896 if(s->sid_ctx_length != s->session->sid_ctx_length
897 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
899 /* actually a client application bug */
900 al=SSL_AD_ILLEGAL_PARAMETER;
901 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
906 /* a miss or crap from the other end */
909 /* If we were trying for session-id reuse, make a new
910 * SSL_SESSION so we don't stuff up other people */
911 if (s->session->session_id_length > 0)
913 if (!ssl_get_new_session(s,0))
915 al=SSL_AD_INTERNAL_ERROR;
919 s->session->session_id_length=j;
920 memcpy(s->session->session_id,p,j); /* j could be 0 */
923 c=ssl_get_cipher_by_char(s,p);
927 al=SSL_AD_ILLEGAL_PARAMETER;
928 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
931 /* TLS v1.2 only ciphersuites require v1.2 or later */
932 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
933 (TLS1_get_version(s) < TLS1_2_VERSION))
935 al=SSL_AD_ILLEGAL_PARAMETER;
936 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
939 #ifndef OPENSSL_NO_SRP
940 if (((c->algorithm_mkey & SSL_kSRP) || (c->algorithm_auth & SSL_aSRP)) &&
941 !(s->srp_ctx.srp_Mask & SSL_kSRP))
943 al=SSL_AD_ILLEGAL_PARAMETER;
944 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
947 #endif /* OPENSSL_NO_SRP */
948 p+=ssl_put_cipher_by_char(s,NULL,NULL);
950 sk=ssl_get_ciphers_by_id(s);
951 i=sk_SSL_CIPHER_find(sk,c);
954 /* we did not say we would use this cipher */
955 al=SSL_AD_ILLEGAL_PARAMETER;
956 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
960 /* Depending on the session caching (internal/external), the cipher
961 and/or cipher_id values may not be set. Make sure that
962 cipher_id is set and use it for comparison. */
963 if (s->session->cipher)
964 s->session->cipher_id = s->session->cipher->id;
965 if (s->hit && (s->session->cipher_id != c->id))
967 /* Workaround is now obsolete */
970 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
973 al=SSL_AD_ILLEGAL_PARAMETER;
974 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
978 s->s3->tmp.new_cipher=c;
979 /* Don't digest cached records if TLS v1.2: we may need them for
980 * client authentication.
982 if (TLS1_get_version(s) < TLS1_2_VERSION && !ssl3_digest_cached_records(s))
984 al = SSL_AD_INTERNAL_ERROR;
987 /* lets get the compression algorithm */
989 #ifdef OPENSSL_NO_COMP
992 al=SSL_AD_ILLEGAL_PARAMETER;
993 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
996 /* If compression is disabled we'd better not try to resume a session
999 if (s->session->compress_meth != 0)
1001 al=SSL_AD_INTERNAL_ERROR;
1002 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
1007 if (s->hit && j != s->session->compress_meth)
1009 al=SSL_AD_ILLEGAL_PARAMETER;
1010 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
1015 else if (s->options & SSL_OP_NO_COMPRESSION)
1017 al=SSL_AD_ILLEGAL_PARAMETER;
1018 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
1022 comp=ssl3_comp_find(s->ctx->comp_methods,j);
1024 if ((j != 0) && (comp == NULL))
1026 al=SSL_AD_ILLEGAL_PARAMETER;
1027 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
1032 s->s3->tmp.new_compression=comp;
1036 #ifndef OPENSSL_NO_TLSEXT
1038 if (s->version >= SSL3_VERSION)
1040 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
1042 /* 'al' set by ssl_parse_serverhello_tlsext */
1043 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
1046 if (ssl_check_serverhello_tlsext(s) <= 0)
1048 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
1056 /* wrong packet length */
1057 al=SSL_AD_DECODE_ERROR;
1058 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
1064 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1069 int ssl3_get_server_certificate(SSL *s)
1071 int al,i,ok,ret= -1;
1072 unsigned long n,nc,llen,l;
1074 const unsigned char *q,*p;
1076 STACK_OF(X509) *sk=NULL;
1078 EVP_PKEY *pkey=NULL;
1079 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1081 n=s->method->ssl_get_message(s,
1088 if (!ok) return((int)n);
1090 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1091 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1092 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1094 s->s3->tmp.reuse_message=1;
1098 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1100 al=SSL_AD_UNEXPECTED_MESSAGE;
1101 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1104 p=d=(unsigned char *)s->init_msg;
1106 if ((sk=sk_X509_new_null()) == NULL)
1108 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1115 al=SSL_AD_DECODE_ERROR;
1116 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1119 for (nc=0; nc<llen; )
1122 if ((l+nc+3) > llen)
1124 al=SSL_AD_DECODE_ERROR;
1125 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1130 x=d2i_X509(NULL,&q,l);
1133 al=SSL_AD_BAD_CERTIFICATE;
1134 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1139 al=SSL_AD_DECODE_ERROR;
1140 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1143 if (!sk_X509_push(sk,x))
1145 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1153 i=ssl_verify_cert_chain(s,sk);
1154 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1155 #ifndef OPENSSL_NO_KRB5
1156 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1157 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1158 #endif /* OPENSSL_NO_KRB5 */
1161 al=ssl_verify_alarm_type(s->verify_result);
1162 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1165 ERR_clear_error(); /* but we keep s->verify_result */
1167 sc=ssl_sess_cert_new();
1168 if (sc == NULL) goto err;
1170 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1171 s->session->sess_cert=sc;
1174 /* Inconsistency alert: cert_chain does include the peer's
1175 * certificate, which we don't include in s3_srvr.c */
1176 x=sk_X509_value(sk,0);
1178 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1180 pkey=X509_get_pubkey(x);
1182 /* VRS: allow null cert if auth == KRB5 */
1183 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1184 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1188 fprintf(stderr,"pkey,x = %p, %p\n", pkey,x);
1189 fprintf(stderr,"ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1190 fprintf(stderr,"cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1191 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1192 #endif /* KSSL_DEBUG */
1194 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1198 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1199 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1203 i=ssl_cert_type(x,pkey);
1204 if (need_cert && i < 0)
1208 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1209 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1215 sc->peer_cert_type=i;
1216 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1217 /* Why would the following ever happen?
1218 * We just created sc a couple of lines ago. */
1219 if (sc->peer_pkeys[i].x509 != NULL)
1220 X509_free(sc->peer_pkeys[i].x509);
1221 sc->peer_pkeys[i].x509=x;
1222 sc->peer_key= &(sc->peer_pkeys[i]);
1224 if (s->session->peer != NULL)
1225 X509_free(s->session->peer);
1226 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1231 sc->peer_cert_type=i;
1234 if (s->session->peer != NULL)
1235 X509_free(s->session->peer);
1236 s->session->peer=NULL;
1238 s->session->verify_result = s->verify_result;
1246 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1249 EVP_PKEY_free(pkey);
1251 sk_X509_pop_free(sk,X509_free);
1255 int ssl3_get_key_exchange(SSL *s)
1257 #ifndef OPENSSL_NO_RSA
1258 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1261 unsigned char *param,*p;
1263 long i,param_len,n,alg_k,alg_a;
1264 EVP_PKEY *pkey=NULL;
1265 const EVP_MD *md = NULL;
1266 #ifndef OPENSSL_NO_RSA
1269 #ifndef OPENSSL_NO_DH
1272 #ifndef OPENSSL_NO_ECDH
1273 EC_KEY *ecdh = NULL;
1274 BN_CTX *bn_ctx = NULL;
1275 EC_POINT *srvr_ecpoint = NULL;
1277 int encoded_pt_len = 0;
1280 EVP_MD_CTX_init(&md_ctx);
1282 /* use same message size as in ssl3_get_certificate_request()
1283 * as ServerKeyExchange message may be skipped */
1284 n=s->method->ssl_get_message(s,
1285 SSL3_ST_CR_KEY_EXCH_A,
1286 SSL3_ST_CR_KEY_EXCH_B,
1290 if (!ok) return((int)n);
1292 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1294 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1297 * Can't skip server key exchange if this is an ephemeral
1300 if (alg_k & (SSL_kEDH|SSL_kEECDH))
1302 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_UNEXPECTED_MESSAGE);
1303 al = SSL_AD_UNEXPECTED_MESSAGE;
1306 #ifndef OPENSSL_NO_PSK
1307 /* In plain PSK ciphersuite, ServerKeyExchange can be
1308 omitted if no identity hint is sent. Set
1309 session->sess_cert anyway to avoid problems
1311 if (alg_k & SSL_kPSK)
1313 s->session->sess_cert=ssl_sess_cert_new();
1314 if (s->ctx->psk_identity_hint)
1315 OPENSSL_free(s->ctx->psk_identity_hint);
1316 s->ctx->psk_identity_hint = NULL;
1319 s->s3->tmp.reuse_message=1;
1323 param=p=(unsigned char *)s->init_msg;
1324 if (s->session->sess_cert != NULL)
1326 #ifndef OPENSSL_NO_RSA
1327 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1329 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1330 s->session->sess_cert->peer_rsa_tmp=NULL;
1333 #ifndef OPENSSL_NO_DH
1334 if (s->session->sess_cert->peer_dh_tmp)
1336 DH_free(s->session->sess_cert->peer_dh_tmp);
1337 s->session->sess_cert->peer_dh_tmp=NULL;
1340 #ifndef OPENSSL_NO_ECDH
1341 if (s->session->sess_cert->peer_ecdh_tmp)
1343 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1344 s->session->sess_cert->peer_ecdh_tmp=NULL;
1350 s->session->sess_cert=ssl_sess_cert_new();
1353 /* Total length of the parameters including the length prefix */
1356 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1358 al=SSL_AD_DECODE_ERROR;
1360 #ifndef OPENSSL_NO_PSK
1361 if (alg_k & SSL_kPSK)
1363 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1368 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1369 SSL_R_LENGTH_TOO_SHORT);
1374 /* Store PSK identity hint for later use, hint is used
1375 * in ssl3_send_client_key_exchange. Assume that the
1376 * maximum length of a PSK identity hint can be as
1377 * long as the maximum length of a PSK identity. */
1378 if (i > PSK_MAX_IDENTITY_LEN)
1380 al=SSL_AD_HANDSHAKE_FAILURE;
1381 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1382 SSL_R_DATA_LENGTH_TOO_LONG);
1385 if (i > n - param_len)
1387 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1388 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 al=SSL_AD_HANDSHAKE_FAILURE;
1405 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1413 #endif /* !OPENSSL_NO_PSK */
1414 #ifndef OPENSSL_NO_SRP
1415 if (alg_k & SSL_kSRP)
1420 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1421 SSL_R_LENGTH_TOO_SHORT);
1426 if (i > n - param_len)
1428 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1433 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1435 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1441 if (2 > n - param_len)
1443 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1444 SSL_R_LENGTH_TOO_SHORT);
1451 if (i > n - param_len)
1453 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1458 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1460 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1466 if (1 > n - param_len)
1468 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1469 SSL_R_LENGTH_TOO_SHORT);
1474 i = (unsigned int)(p[0]);
1477 if (i > n - param_len)
1479 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1484 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1486 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1491 if (2 > n - param_len)
1493 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1494 SSL_R_LENGTH_TOO_SHORT);
1501 if (i > n - param_len)
1503 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1508 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1510 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1516 if (!srp_verify_server_param(s, &al))
1518 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_PARAMETERS);
1522 /* We must check if there is a certificate */
1523 #ifndef OPENSSL_NO_RSA
1524 if (alg_a & SSL_aRSA)
1525 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1530 #ifndef OPENSSL_NO_DSA
1531 else if (alg_a & SSL_aDSS)
1532 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1536 #endif /* !OPENSSL_NO_SRP */
1537 #ifndef OPENSSL_NO_RSA
1538 if (alg_k & SSL_kRSA)
1540 /* Temporary RSA keys only allowed in export ciphersuites */
1541 if (!SSL_C_IS_EXPORT(s->s3->tmp.new_cipher))
1543 al=SSL_AD_UNEXPECTED_MESSAGE;
1544 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1547 if ((rsa=RSA_new()) == NULL)
1549 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1556 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1557 SSL_R_LENGTH_TOO_SHORT);
1562 if (i > n - param_len)
1564 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1569 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1571 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1576 if (2 > n - param_len)
1578 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1579 SSL_R_LENGTH_TOO_SHORT);
1586 if (i > n - param_len)
1588 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1593 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1595 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1601 /* this should be because we are using an export cipher */
1602 if (alg_a & SSL_aRSA)
1603 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1606 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1609 s->session->sess_cert->peer_rsa_tmp=rsa;
1612 #else /* OPENSSL_NO_RSA */
1616 #ifndef OPENSSL_NO_DH
1617 else if (alg_k & SSL_kEDH)
1619 if ((dh=DH_new()) == NULL)
1621 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1628 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1629 SSL_R_LENGTH_TOO_SHORT);
1634 if (i > n - param_len)
1636 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1641 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1643 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1648 if (2 > n - param_len)
1650 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1651 SSL_R_LENGTH_TOO_SHORT);
1658 if (i > n - param_len)
1660 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1665 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1667 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1672 if (2 > n - param_len)
1674 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1675 SSL_R_LENGTH_TOO_SHORT);
1682 if (i > n - param_len)
1684 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1689 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1691 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1697 #ifndef OPENSSL_NO_RSA
1698 if (alg_a & SSL_aRSA)
1699 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1704 #ifndef OPENSSL_NO_DSA
1705 else if (alg_a & SSL_aDSS)
1706 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1708 /* else anonymous DH, so no certificate or pkey. */
1710 s->session->sess_cert->peer_dh_tmp=dh;
1713 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1715 al=SSL_AD_ILLEGAL_PARAMETER;
1716 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1719 #endif /* !OPENSSL_NO_DH */
1721 #ifndef OPENSSL_NO_ECDH
1722 else if (alg_k & SSL_kEECDH)
1725 const EC_GROUP *group;
1727 if ((ecdh=EC_KEY_new()) == NULL)
1729 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1733 /* Extract elliptic curve parameters and the
1734 * server's ephemeral ECDH public key.
1735 * Keep accumulating lengths of various components in
1736 * param_len and make sure it never exceeds n.
1739 /* XXX: For now we only support named (not generic) curves
1740 * and the ECParameters in this case is just three bytes. We
1741 * also need one byte for the length of the encoded point
1746 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1747 SSL_R_LENGTH_TOO_SHORT);
1751 if ((*p != NAMED_CURVE_TYPE) ||
1752 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1754 al=SSL_AD_INTERNAL_ERROR;
1755 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1759 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1762 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1765 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1767 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1770 EC_GROUP_free(ngroup);
1772 group = EC_KEY_get0_group(ecdh);
1774 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1775 (EC_GROUP_get_degree(group) > 163))
1777 al=SSL_AD_EXPORT_RESTRICTION;
1778 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1784 /* Next, get the encoded ECPoint */
1785 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1786 ((bn_ctx = BN_CTX_new()) == NULL))
1788 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1792 encoded_pt_len = *p; /* length of encoded point */
1795 if ((encoded_pt_len > n - param_len) ||
1796 (EC_POINT_oct2point(group, srvr_ecpoint,
1797 p, encoded_pt_len, bn_ctx) == 0))
1799 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1802 param_len += encoded_pt_len;
1807 /* The ECC/TLS specification does not mention
1808 * the use of DSA to sign ECParameters in the server
1809 * key exchange message. We do support RSA and ECDSA.
1812 #ifndef OPENSSL_NO_RSA
1813 else if (alg_a & SSL_aRSA)
1814 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1816 #ifndef OPENSSL_NO_ECDSA
1817 else if (alg_a & SSL_aECDSA)
1818 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1820 /* else anonymous ECDH, so no certificate or pkey. */
1821 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1822 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1824 BN_CTX_free(bn_ctx);
1826 EC_POINT_free(srvr_ecpoint);
1827 srvr_ecpoint = NULL;
1831 al=SSL_AD_UNEXPECTED_MESSAGE;
1832 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1835 #endif /* !OPENSSL_NO_ECDH */
1838 /* p points to the next byte, there are 'n' bytes left */
1840 /* if it was signed, check the signature */
1843 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1848 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1849 SSL_R_LENGTH_TOO_SHORT);
1853 sigalg = tls12_get_sigid(pkey);
1854 /* Should never happen */
1857 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1860 /* Check key type is consistent with signature */
1861 if (sigalg != (int)p[1])
1863 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE);
1864 al=SSL_AD_DECODE_ERROR;
1867 md = tls12_get_hash(p[0]);
1870 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
1874 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1884 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1885 SSL_R_LENGTH_TOO_SHORT);
1890 j=EVP_PKEY_size(pkey);
1892 /* Check signature length. If n is 0 then signature is empty */
1893 if ((i != n) || (n > j) || (n <= 0))
1895 /* wrong packet length */
1896 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1900 #ifndef OPENSSL_NO_RSA
1901 if (pkey->type == EVP_PKEY_RSA && TLS1_get_version(s) < TLS1_2_VERSION)
1908 for (num=2; num > 0; num--)
1910 EVP_MD_CTX_set_flags(&md_ctx,
1911 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1912 EVP_DigestInit_ex(&md_ctx,(num == 2)
1913 ?s->ctx->md5:s->ctx->sha1, NULL);
1914 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1915 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1916 EVP_DigestUpdate(&md_ctx,param,param_len);
1917 EVP_DigestFinal_ex(&md_ctx,q,&size);
1921 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1925 al=SSL_AD_DECRYPT_ERROR;
1926 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1932 al=SSL_AD_DECRYPT_ERROR;
1933 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1940 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1941 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1942 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1943 EVP_VerifyUpdate(&md_ctx,param,param_len);
1944 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1947 al=SSL_AD_DECRYPT_ERROR;
1948 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1955 /* aNULL, aSRP or kPSK do not need public keys */
1956 if (!(alg_a & (SSL_aNULL|SSL_aSRP)) && !(alg_k & SSL_kPSK))
1958 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1961 /* still data left over */
1964 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1968 EVP_PKEY_free(pkey);
1969 EVP_MD_CTX_cleanup(&md_ctx);
1972 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1974 EVP_PKEY_free(pkey);
1975 #ifndef OPENSSL_NO_RSA
1979 #ifndef OPENSSL_NO_DH
1983 #ifndef OPENSSL_NO_ECDH
1984 BN_CTX_free(bn_ctx);
1985 EC_POINT_free(srvr_ecpoint);
1989 EVP_MD_CTX_cleanup(&md_ctx);
1993 int ssl3_get_certificate_request(SSL *s)
1996 unsigned long n,nc,l;
1997 unsigned int llen, ctype_num,i;
1999 const unsigned char *p,*q;
2001 STACK_OF(X509_NAME) *ca_sk=NULL;
2003 n=s->method->ssl_get_message(s,
2004 SSL3_ST_CR_CERT_REQ_A,
2005 SSL3_ST_CR_CERT_REQ_B,
2010 if (!ok) return((int)n);
2012 s->s3->tmp.cert_req=0;
2014 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
2016 s->s3->tmp.reuse_message=1;
2017 /* If we get here we don't need any cached handshake records
2018 * as we wont be doing client auth.
2020 if (s->s3->handshake_buffer)
2022 if (!ssl3_digest_cached_records(s))
2028 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
2030 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2031 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
2035 /* TLS does not like anon-DH with client cert */
2036 if (s->version > SSL3_VERSION)
2038 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
2040 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2041 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
2046 p=d=(unsigned char *)s->init_msg;
2048 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
2050 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
2054 /* get the certificate types */
2056 if (ctype_num > SSL3_CT_NUMBER)
2057 ctype_num=SSL3_CT_NUMBER;
2058 for (i=0; i<ctype_num; i++)
2059 s->s3->tmp.ctype[i]= p[i];
2061 if (TLS1_get_version(s) >= TLS1_2_VERSION)
2064 /* Check we have enough room for signature algorithms and
2065 * following length value.
2067 if ((unsigned long)(p - d + llen + 2) > n)
2069 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2070 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
2073 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
2075 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2076 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
2082 /* get the CA RDNs */
2087 out=fopen("/tmp/vsign.der","w");
2088 fwrite(p,1,llen,out);
2093 if ((unsigned long)(p - d + llen) != n)
2095 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2096 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
2100 for (nc=0; nc<llen; )
2103 if ((l+nc+2) > llen)
2105 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
2106 goto cont; /* netscape bugs */
2107 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2108 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
2114 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
2116 /* If netscape tolerance is on, ignore errors */
2117 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
2121 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2122 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
2129 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2130 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
2133 if (!sk_X509_NAME_push(ca_sk,xn))
2135 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
2149 /* we should setup a certificate to return.... */
2150 s->s3->tmp.cert_req=1;
2151 s->s3->tmp.ctype_num=ctype_num;
2152 if (s->s3->tmp.ca_names != NULL)
2153 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
2154 s->s3->tmp.ca_names=ca_sk;
2159 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
2163 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
2165 return(X509_NAME_cmp(*a,*b));
2167 #ifndef OPENSSL_NO_TLSEXT
2168 int ssl3_get_new_session_ticket(SSL *s)
2170 int ok,al,ret=0, ticklen;
2172 const unsigned char *p;
2175 n=s->method->ssl_get_message(s,
2176 SSL3_ST_CR_SESSION_TICKET_A,
2177 SSL3_ST_CR_SESSION_TICKET_B,
2178 SSL3_MT_NEWSESSION_TICKET,
2187 /* need at least ticket_lifetime_hint + ticket length */
2188 al = SSL_AD_DECODE_ERROR;
2189 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2193 p=d=(unsigned char *)s->init_msg;
2194 n2l(p, s->session->tlsext_tick_lifetime_hint);
2196 /* ticket_lifetime_hint + ticket_length + ticket */
2197 if (ticklen + 6 != n)
2199 al = SSL_AD_DECODE_ERROR;
2200 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2203 if (s->session->tlsext_tick)
2205 OPENSSL_free(s->session->tlsext_tick);
2206 s->session->tlsext_ticklen = 0;
2208 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2209 if (!s->session->tlsext_tick)
2211 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2214 memcpy(s->session->tlsext_tick, p, ticklen);
2215 s->session->tlsext_ticklen = ticklen;
2216 /* There are two ways to detect a resumed ticket session.
2217 * One is to set an appropriate session ID and then the server
2218 * must return a match in ServerHello. This allows the normal
2219 * client session ID matching to work and we know much
2220 * earlier that the ticket has been accepted.
2222 * The other way is to set zero length session ID when the
2223 * ticket is presented and rely on the handshake to determine
2224 * session resumption.
2226 * We choose the former approach because this fits in with
2227 * assumptions elsewhere in OpenSSL. The session ID is set
2228 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2231 EVP_Digest(p, ticklen,
2232 s->session->session_id, &s->session->session_id_length,
2233 #ifndef OPENSSL_NO_SHA256
2234 EVP_sha256(), NULL);
2241 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2246 int ssl3_get_cert_status(SSL *s)
2249 unsigned long resplen,n;
2250 const unsigned char *p;
2252 n=s->method->ssl_get_message(s,
2253 SSL3_ST_CR_CERT_STATUS_A,
2254 SSL3_ST_CR_CERT_STATUS_B,
2255 SSL3_MT_CERTIFICATE_STATUS,
2259 if (!ok) return((int)n);
2262 /* need at least status type + length */
2263 al = SSL_AD_DECODE_ERROR;
2264 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2267 p = (unsigned char *)s->init_msg;
2268 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2270 al = SSL_AD_DECODE_ERROR;
2271 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2275 if (resplen + 4 != n)
2277 al = SSL_AD_DECODE_ERROR;
2278 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2281 if (s->tlsext_ocsp_resp)
2282 OPENSSL_free(s->tlsext_ocsp_resp);
2283 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2284 if (!s->tlsext_ocsp_resp)
2286 al = SSL_AD_INTERNAL_ERROR;
2287 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2290 s->tlsext_ocsp_resplen = resplen;
2291 if (s->ctx->tlsext_status_cb)
2294 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2297 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2298 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2303 al = SSL_AD_INTERNAL_ERROR;
2304 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2310 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2315 int ssl3_get_server_done(SSL *s)
2320 n=s->method->ssl_get_message(s,
2321 SSL3_ST_CR_SRVR_DONE_A,
2322 SSL3_ST_CR_SRVR_DONE_B,
2323 SSL3_MT_SERVER_DONE,
2324 30, /* should be very small, like 0 :-) */
2327 if (!ok) return((int)n);
2330 /* should contain no data */
2331 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2332 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2340 int ssl3_send_client_key_exchange(SSL *s)
2342 unsigned char *p,*d;
2344 unsigned long alg_k;
2345 #ifndef OPENSSL_NO_RSA
2347 EVP_PKEY *pkey=NULL;
2349 #ifndef OPENSSL_NO_KRB5
2351 #endif /* OPENSSL_NO_KRB5 */
2352 #ifndef OPENSSL_NO_ECDH
2353 EC_KEY *clnt_ecdh = NULL;
2354 const EC_POINT *srvr_ecpoint = NULL;
2355 EVP_PKEY *srvr_pub_pkey = NULL;
2356 unsigned char *encodedPoint = NULL;
2357 int encoded_pt_len = 0;
2358 BN_CTX * bn_ctx = NULL;
2361 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2363 d=(unsigned char *)s->init_buf->data;
2366 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2368 /* Fool emacs indentation */
2370 #ifndef OPENSSL_NO_RSA
2371 else if (alg_k & SSL_kRSA)
2374 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2376 if (s->session->sess_cert == NULL)
2378 /* We should always have a server certificate with SSL_kRSA. */
2379 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2383 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2384 rsa=s->session->sess_cert->peer_rsa_tmp;
2387 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2388 if ((pkey == NULL) ||
2389 (pkey->type != EVP_PKEY_RSA) ||
2390 (pkey->pkey.rsa == NULL))
2392 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2396 EVP_PKEY_free(pkey);
2399 tmp_buf[0]=s->client_version>>8;
2400 tmp_buf[1]=s->client_version&0xff;
2401 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2404 s->session->master_key_length=sizeof tmp_buf;
2407 /* Fix buf for TLS and beyond */
2408 if (s->version > SSL3_VERSION)
2410 n=RSA_public_encrypt(sizeof tmp_buf,
2411 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2413 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2414 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2418 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2422 /* Fix buf for TLS and beyond */
2423 if (s->version > SSL3_VERSION)
2429 s->session->master_key_length=
2430 s->method->ssl3_enc->generate_master_secret(s,
2431 s->session->master_key,
2432 tmp_buf,sizeof tmp_buf);
2433 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2436 #ifndef OPENSSL_NO_KRB5
2437 else if (alg_k & SSL_kKRB5)
2439 krb5_error_code krb5rc;
2440 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2441 /* krb5_data krb5_ap_req; */
2442 krb5_data *enc_ticket;
2443 krb5_data authenticator, *authp = NULL;
2444 EVP_CIPHER_CTX ciph_ctx;
2445 const EVP_CIPHER *enc = NULL;
2446 unsigned char iv[EVP_MAX_IV_LENGTH];
2447 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2448 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2449 + EVP_MAX_IV_LENGTH];
2450 int padl, outl = sizeof(epms);
2452 EVP_CIPHER_CTX_init(&ciph_ctx);
2455 fprintf(stderr,"ssl3_send_client_key_exchange(%lx & %lx)\n",
2457 #endif /* KSSL_DEBUG */
2461 if (KRB5SENDAUTH) authp = &authenticator;
2462 #endif /* KRB5SENDAUTH */
2464 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2466 enc = kssl_map_enc(kssl_ctx->enctype);
2471 fprintf(stderr,"kssl_cget_tkt rtn %d\n", krb5rc);
2472 if (krb5rc && kssl_err.text)
2473 fprintf(stderr,"kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2475 #endif /* KSSL_DEBUG */
2479 ssl3_send_alert(s,SSL3_AL_FATAL,
2480 SSL_AD_HANDSHAKE_FAILURE);
2481 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2486 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2487 ** in place of RFC 2712 KerberosWrapper, as in:
2489 ** Send ticket (copy to *p, set n = length)
2490 ** n = krb5_ap_req.length;
2491 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2492 ** if (krb5_ap_req.data)
2493 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2495 ** Now using real RFC 2712 KerberosWrapper
2496 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2497 ** Note: 2712 "opaque" types are here replaced
2498 ** with a 2-byte length followed by the value.
2500 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2501 ** Where "xx xx" = length bytes. Shown here with
2502 ** optional authenticator omitted.
2505 /* KerberosWrapper.Ticket */
2506 s2n(enc_ticket->length,p);
2507 memcpy(p, enc_ticket->data, enc_ticket->length);
2508 p+= enc_ticket->length;
2509 n = enc_ticket->length + 2;
2511 /* KerberosWrapper.Authenticator */
2512 if (authp && authp->length)
2514 s2n(authp->length,p);
2515 memcpy(p, authp->data, authp->length);
2517 n+= authp->length + 2;
2525 s2n(0,p);/* null authenticator length */
2529 tmp_buf[0]=s->client_version>>8;
2530 tmp_buf[1]=s->client_version&0xff;
2531 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2534 /* 20010420 VRS. Tried it this way; failed.
2535 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2536 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2537 ** kssl_ctx->length);
2538 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2541 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2542 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2544 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2546 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2548 if (outl > (int)sizeof epms)
2550 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2553 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2555 /* KerberosWrapper.EncryptedPreMasterSecret */
2557 memcpy(p, epms, outl);
2561 s->session->master_key_length=
2562 s->method->ssl3_enc->generate_master_secret(s,
2563 s->session->master_key,
2564 tmp_buf, sizeof tmp_buf);
2566 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2567 OPENSSL_cleanse(epms, outl);
2570 #ifndef OPENSSL_NO_DH
2571 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2573 DH *dh_srvr,*dh_clnt;
2575 if (s->session->sess_cert == NULL)
2577 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2578 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2582 if (s->session->sess_cert->peer_dh_tmp != NULL)
2583 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2586 /* we get them from the cert */
2587 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2588 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2592 /* generate a new random key */
2593 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2595 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2598 if (!DH_generate_key(dh_clnt))
2600 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2605 /* use the 'p' output buffer for the DH key, but
2606 * make sure to clear it out afterwards */
2608 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2612 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2617 /* generate master key from the result */
2618 s->session->master_key_length=
2619 s->method->ssl3_enc->generate_master_secret(s,
2620 s->session->master_key,p,n);
2624 /* send off the data */
2625 n=BN_num_bytes(dh_clnt->pub_key);
2627 BN_bn2bin(dh_clnt->pub_key,p);
2632 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2636 #ifndef OPENSSL_NO_ECDH
2637 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2639 const EC_GROUP *srvr_group = NULL;
2641 int ecdh_clnt_cert = 0;
2644 if (s->session->sess_cert == NULL)
2646 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2647 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2651 /* Did we send out the client's
2652 * ECDH share for use in premaster
2653 * computation as part of client certificate?
2654 * If so, set ecdh_clnt_cert to 1.
2656 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2658 /* XXX: For now, we do not support client
2659 * authentication using ECDH certificates.
2660 * To add such support, one needs to add
2661 * code that checks for appropriate
2662 * conditions and sets ecdh_clnt_cert to 1.
2663 * For example, the cert have an ECC
2664 * key on the same curve as the server's
2665 * and the key should be authorized for
2668 * One also needs to add code in ssl3_connect
2669 * to skip sending the certificate verify
2672 * if ((s->cert->key->privatekey != NULL) &&
2673 * (s->cert->key->privatekey->type ==
2674 * EVP_PKEY_EC) && ...)
2675 * ecdh_clnt_cert = 1;
2679 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2681 tkey = s->session->sess_cert->peer_ecdh_tmp;
2685 /* Get the Server Public Key from Cert */
2686 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2687 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2688 if ((srvr_pub_pkey == NULL) ||
2689 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2690 (srvr_pub_pkey->pkey.ec == NULL))
2692 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2693 ERR_R_INTERNAL_ERROR);
2697 tkey = srvr_pub_pkey->pkey.ec;
2700 srvr_group = EC_KEY_get0_group(tkey);
2701 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2703 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2705 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2706 ERR_R_INTERNAL_ERROR);
2710 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2712 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2716 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2718 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2723 /* Reuse key info from our certificate
2724 * We only need our private key to perform
2725 * the ECDH computation.
2727 const BIGNUM *priv_key;
2728 tkey = s->cert->key->privatekey->pkey.ec;
2729 priv_key = EC_KEY_get0_private_key(tkey);
2730 if (priv_key == NULL)
2732 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2735 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2737 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2743 /* Generate a new ECDH key pair */
2744 if (!(EC_KEY_generate_key(clnt_ecdh)))
2746 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2751 /* use the 'p' output buffer for the ECDH key, but
2752 * make sure to clear it out afterwards
2755 field_size = EC_GROUP_get_degree(srvr_group);
2756 if (field_size <= 0)
2758 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2762 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2765 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2770 /* generate master key from the result */
2771 s->session->master_key_length = s->method->ssl3_enc \
2772 -> generate_master_secret(s,
2773 s->session->master_key,
2776 memset(p, 0, n); /* clean up */
2780 /* Send empty client key exch message */
2785 /* First check the size of encoding and
2786 * allocate memory accordingly.
2789 EC_POINT_point2oct(srvr_group,
2790 EC_KEY_get0_public_key(clnt_ecdh),
2791 POINT_CONVERSION_UNCOMPRESSED,
2794 encodedPoint = (unsigned char *)
2795 OPENSSL_malloc(encoded_pt_len *
2796 sizeof(unsigned char));
2797 bn_ctx = BN_CTX_new();
2798 if ((encodedPoint == NULL) ||
2801 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2805 /* Encode the public key */
2806 n = EC_POINT_point2oct(srvr_group,
2807 EC_KEY_get0_public_key(clnt_ecdh),
2808 POINT_CONVERSION_UNCOMPRESSED,
2809 encodedPoint, encoded_pt_len, bn_ctx);
2811 *p = n; /* length of encoded point */
2812 /* Encoded point will be copied here */
2814 /* copy the point */
2815 memcpy((unsigned char *)p, encodedPoint, n);
2816 /* increment n to account for length field */
2820 /* Free allocated memory */
2821 BN_CTX_free(bn_ctx);
2822 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2823 if (clnt_ecdh != NULL)
2824 EC_KEY_free(clnt_ecdh);
2825 EVP_PKEY_free(srvr_pub_pkey);
2827 #endif /* !OPENSSL_NO_ECDH */
2828 else if (alg_k & SSL_kGOST)
2830 /* GOST key exchange message creation */
2831 EVP_PKEY_CTX *pkey_ctx;
2834 unsigned int md_len;
2836 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2837 EVP_MD_CTX *ukm_hash;
2840 /* Get server sertificate PKEY and create ctx from it */
2841 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2843 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2845 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2849 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2850 /* If we have send a certificate, and certificate key
2852 * parameters match those of server certificate, use
2853 * certificate key for key exchange
2856 /* Otherwise, generate ephemeral key pair */
2858 EVP_PKEY_encrypt_init(pkey_ctx);
2859 /* Generate session key */
2860 RAND_bytes(premaster_secret,32);
2861 /* If we have client certificate, use its secret as peer key */
2862 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2863 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2864 /* If there was an error - just ignore it. Ephemeral key
2870 /* Compute shared IV and store it in algorithm-specific
2872 ukm_hash = EVP_MD_CTX_create();
2873 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2874 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2875 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2876 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2877 EVP_MD_CTX_destroy(ukm_hash);
2878 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2880 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2884 /* Make GOST keytransport blob message */
2885 /*Encapsulate it into sequence */
2886 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2888 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2889 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2896 *(p++)= msglen & 0xff;
2901 *(p++)= msglen & 0xff;
2904 memcpy(p, tmp, msglen);
2905 /* Check if pubkey from client certificate was used */
2906 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2908 /* Set flag "skip certificate verify" */
2909 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2911 EVP_PKEY_CTX_free(pkey_ctx);
2912 s->session->master_key_length=
2913 s->method->ssl3_enc->generate_master_secret(s,
2914 s->session->master_key,premaster_secret,32);
2915 EVP_PKEY_free(pub_key);
2918 #ifndef OPENSSL_NO_SRP
2919 else if (alg_k & SSL_kSRP)
2921 if (s->srp_ctx.A != NULL)
2923 /* send off the data */
2924 n=BN_num_bytes(s->srp_ctx.A);
2926 BN_bn2bin(s->srp_ctx.A,p);
2931 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2934 if (s->session->srp_username != NULL)
2935 OPENSSL_free(s->session->srp_username);
2936 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2937 if (s->session->srp_username == NULL)
2939 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2940 ERR_R_MALLOC_FAILURE);
2944 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2946 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2951 #ifndef OPENSSL_NO_PSK
2952 else if (alg_k & SSL_kPSK)
2954 /* The callback needs PSK_MAX_IDENTITY_LEN + 1 bytes
2955 * to return a \0-terminated identity. The last byte
2956 * is for us for simulating strnlen. */
2957 char identity[PSK_MAX_IDENTITY_LEN + 2];
2958 size_t identity_len;
2959 unsigned char *t = NULL;
2960 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2961 unsigned int pre_ms_len = 0, psk_len = 0;
2965 if (s->psk_client_callback == NULL)
2967 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2968 SSL_R_PSK_NO_CLIENT_CB);
2972 memset(identity, 0, sizeof(identity));
2973 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2974 identity, sizeof(identity) - 1,
2975 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2976 if (psk_len > PSK_MAX_PSK_LEN)
2978 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2979 ERR_R_INTERNAL_ERROR);
2982 else if (psk_len == 0)
2984 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2985 SSL_R_PSK_IDENTITY_NOT_FOUND);
2988 identity[PSK_MAX_IDENTITY_LEN + 1] = '\0';
2989 identity_len = strlen(identity);
2990 if (identity_len > PSK_MAX_IDENTITY_LEN)
2992 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2993 ERR_R_INTERNAL_ERROR);
2996 /* create PSK pre_master_secret */
2997 pre_ms_len = 2+psk_len+2+psk_len;
2999 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
3001 memset(t, 0, psk_len);
3005 if (s->session->psk_identity_hint != NULL)
3006 OPENSSL_free(s->session->psk_identity_hint);
3007 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
3008 if (s->ctx->psk_identity_hint != NULL &&
3009 s->session->psk_identity_hint == NULL)
3011 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3012 ERR_R_MALLOC_FAILURE);
3016 if (s->session->psk_identity != NULL)
3017 OPENSSL_free(s->session->psk_identity);
3018 s->session->psk_identity = BUF_strdup(identity);
3019 if (s->session->psk_identity == NULL)
3021 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3022 ERR_R_MALLOC_FAILURE);
3026 s->session->master_key_length =
3027 s->method->ssl3_enc->generate_master_secret(s,
3028 s->session->master_key,
3029 psk_or_pre_ms, pre_ms_len);
3030 s2n(identity_len, p);
3031 memcpy(p, identity, identity_len);
3032 n = 2 + identity_len;
3035 OPENSSL_cleanse(identity, sizeof(identity));
3036 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
3039 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
3046 ssl3_send_alert(s, SSL3_AL_FATAL,
3047 SSL_AD_HANDSHAKE_FAILURE);
3048 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3049 ERR_R_INTERNAL_ERROR);
3053 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
3056 s->state=SSL3_ST_CW_KEY_EXCH_B;
3057 /* number of bytes to write */
3062 /* SSL3_ST_CW_KEY_EXCH_B */
3063 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3065 #ifndef OPENSSL_NO_ECDH
3066 BN_CTX_free(bn_ctx);
3067 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
3068 if (clnt_ecdh != NULL)
3069 EC_KEY_free(clnt_ecdh);
3070 EVP_PKEY_free(srvr_pub_pkey);
3075 int ssl3_send_client_verify(SSL *s)
3077 unsigned char *p,*d;
3078 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
3080 EVP_PKEY_CTX *pctx=NULL;
3086 EVP_MD_CTX_init(&mctx);
3088 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
3090 d=(unsigned char *)s->init_buf->data;
3092 pkey=s->cert->key->privatekey;
3093 /* Create context from key and test if sha1 is allowed as digest */
3094 pctx = EVP_PKEY_CTX_new(pkey,NULL);
3095 EVP_PKEY_sign_init(pctx);
3096 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
3098 if (TLS1_get_version(s) < TLS1_2_VERSION)
3099 s->method->ssl3_enc->cert_verify_mac(s,
3101 &(data[MD5_DIGEST_LENGTH]));
3107 /* For TLS v1.2 send signature algorithm and signature
3108 * using agreed digest and cached handshake records.
3110 if (TLS1_get_version(s) >= TLS1_2_VERSION)
3114 const EVP_MD *md = s->cert->key->digest;
3115 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
3117 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
3119 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3120 ERR_R_INTERNAL_ERROR);
3125 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
3128 if (!EVP_SignInit_ex(&mctx, md, NULL)
3129 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
3130 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
3132 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3138 if (!ssl3_digest_cached_records(s))
3142 #ifndef OPENSSL_NO_RSA
3143 if (pkey->type == EVP_PKEY_RSA)
3145 s->method->ssl3_enc->cert_verify_mac(s,
3148 if (RSA_sign(NID_md5_sha1, data,
3149 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
3150 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
3152 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
3160 #ifndef OPENSSL_NO_DSA
3161 if (pkey->type == EVP_PKEY_DSA)
3163 if (!DSA_sign(pkey->save_type,
3164 &(data[MD5_DIGEST_LENGTH]),
3165 SHA_DIGEST_LENGTH,&(p[2]),
3166 (unsigned int *)&j,pkey->pkey.dsa))
3168 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
3176 #ifndef OPENSSL_NO_ECDSA
3177 if (pkey->type == EVP_PKEY_EC)
3179 if (!ECDSA_sign(pkey->save_type,
3180 &(data[MD5_DIGEST_LENGTH]),
3181 SHA_DIGEST_LENGTH,&(p[2]),
3182 (unsigned int *)&j,pkey->pkey.ec))
3184 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3193 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
3195 unsigned char signbuf[64];
3198 s->method->ssl3_enc->cert_verify_mac(s,
3199 NID_id_GostR3411_94,
3201 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
3202 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3203 ERR_R_INTERNAL_ERROR);
3206 for (i=63,j=0; i>=0; j++, i--) {
3214 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
3217 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
3220 s->state=SSL3_ST_CW_CERT_VRFY_B;
3221 s->init_num=(int)n+4;
3224 EVP_MD_CTX_cleanup(&mctx);
3225 EVP_PKEY_CTX_free(pctx);
3226 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3228 EVP_MD_CTX_cleanup(&mctx);
3229 EVP_PKEY_CTX_free(pctx);
3233 int ssl3_send_client_certificate(SSL *s)
3236 EVP_PKEY *pkey=NULL;
3240 if (s->state == SSL3_ST_CW_CERT_A)
3242 if ((s->cert == NULL) ||
3243 (s->cert->key->x509 == NULL) ||
3244 (s->cert->key->privatekey == NULL))
3245 s->state=SSL3_ST_CW_CERT_B;
3247 s->state=SSL3_ST_CW_CERT_C;
3250 /* We need to get a client cert */
3251 if (s->state == SSL3_ST_CW_CERT_B)
3253 /* If we get an error, we need to
3254 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3255 * We then get retied later */
3257 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3260 s->rwstate=SSL_X509_LOOKUP;
3263 s->rwstate=SSL_NOTHING;
3264 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3266 s->state=SSL3_ST_CW_CERT_B;
3267 if ( !SSL_use_certificate(s,x509) ||
3268 !SSL_use_PrivateKey(s,pkey))
3274 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3277 if (x509 != NULL) X509_free(x509);
3278 if (pkey != NULL) EVP_PKEY_free(pkey);
3281 if (s->version == SSL3_VERSION)
3283 s->s3->tmp.cert_req=0;
3284 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3289 s->s3->tmp.cert_req=2;
3293 /* Ok, we have a cert */
3294 s->state=SSL3_ST_CW_CERT_C;
3297 if (s->state == SSL3_ST_CW_CERT_C)
3299 s->state=SSL3_ST_CW_CERT_D;
3300 l=ssl3_output_cert_chain(s,
3301 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
3304 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE, ERR_R_INTERNAL_ERROR);
3305 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
3311 /* SSL3_ST_CW_CERT_D */
3312 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3315 #define has_bits(i,m) (((i)&(m)) == (m))
3317 int ssl3_check_cert_and_algorithm(SSL *s)
3321 EVP_PKEY *pkey=NULL;
3323 #ifndef OPENSSL_NO_RSA
3326 #ifndef OPENSSL_NO_DH
3330 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3331 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3333 /* we don't have a certificate */
3334 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3337 sc=s->session->sess_cert;
3340 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3344 #ifndef OPENSSL_NO_RSA
3345 rsa=s->session->sess_cert->peer_rsa_tmp;
3347 #ifndef OPENSSL_NO_DH
3348 dh=s->session->sess_cert->peer_dh_tmp;
3351 /* This is the passed certificate */
3353 idx=sc->peer_cert_type;
3354 #ifndef OPENSSL_NO_ECDH
3355 if (idx == SSL_PKEY_ECC)
3357 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3359 { /* check failed */
3360 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3369 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3370 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3371 EVP_PKEY_free(pkey);
3374 /* Check that we have a certificate if we require one */
3375 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3377 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3380 #ifndef OPENSSL_NO_DSA
3381 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3383 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3387 #ifndef OPENSSL_NO_RSA
3388 if ((alg_k & SSL_kRSA) &&
3389 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3391 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3395 #ifndef OPENSSL_NO_DH
3396 if ((alg_k & SSL_kEDH) &&
3397 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3399 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3402 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3404 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3407 #ifndef OPENSSL_NO_DSA
3408 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3410 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3416 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3418 #ifndef OPENSSL_NO_RSA
3419 if (alg_k & SSL_kRSA)
3422 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3424 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3430 #ifndef OPENSSL_NO_DH
3431 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3434 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3436 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3443 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3449 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3454 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
3455 int ssl3_send_next_proto(SSL *s)
3457 unsigned int len, padding_len;
3460 if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
3462 len = s->next_proto_negotiated_len;
3463 padding_len = 32 - ((len + 2) % 32);
3464 d = (unsigned char *)s->init_buf->data;
3466 memcpy(d + 5, s->next_proto_negotiated, len);
3467 d[5 + len] = padding_len;
3468 memset(d + 6 + len, 0, padding_len);
3469 *(d++)=SSL3_MT_NEXT_PROTO;
3470 l2n3(2 + len + padding_len, d);
3471 s->state = SSL3_ST_CW_NEXT_PROTO_B;
3472 s->init_num = 4 + 2 + len + padding_len;
3476 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3478 #endif /* !OPENSSL_NO_TLSEXT && !OPENSSL_NO_NEXTPROTONEG */
3480 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3483 #ifndef OPENSSL_NO_ENGINE
3484 if (s->ctx->client_cert_engine)
3486 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3487 SSL_get_client_CA_list(s),
3488 px509, ppkey, NULL, NULL, NULL);
3493 if (s->ctx->client_cert_cb)
3494 i = s->ctx->client_cert_cb(s,px509,ppkey);