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 <openssl/crypto.h>
153 #include "ssl_locl.h"
154 #include "kssl_lcl.h"
155 #include <openssl/buffer.h>
156 #include <openssl/rand.h>
157 #include <openssl/objects.h>
158 #include <openssl/evp.h>
159 #include <openssl/md5.h>
161 #include <openssl/fips.h>
163 #ifndef OPENSSL_NO_DH
164 #include <openssl/dh.h>
166 #include <openssl/bn.h>
167 #ifndef OPENSSL_NO_ENGINE
168 #include <openssl/engine.h>
171 static const SSL_METHOD *ssl3_get_client_method(int ver);
172 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
174 static const SSL_METHOD *ssl3_get_client_method(int ver)
176 if (ver == SSL3_VERSION)
177 return(SSLv3_client_method());
182 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
183 ssl_undefined_function,
185 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++;
278 case SSL3_ST_CW_CLNT_HELLO_A:
279 case SSL3_ST_CW_CLNT_HELLO_B:
282 ret=ssl3_client_hello(s);
283 if (ret <= 0) goto end;
284 s->state=SSL3_ST_CR_SRVR_HELLO_A;
287 /* turn on buffering for the next lot of output */
288 if (s->bbio != s->wbio)
289 s->wbio=BIO_push(s->bbio,s->wbio);
293 case SSL3_ST_CR_SRVR_HELLO_A:
294 case SSL3_ST_CR_SRVR_HELLO_B:
295 ret=ssl3_get_server_hello(s);
296 if (ret <= 0) goto end;
300 s->state=SSL3_ST_CR_FINISHED_A;
301 #ifndef OPENSSL_NO_TLSEXT
302 if (s->tlsext_ticket_expected)
304 /* receive renewed session ticket */
305 s->state=SSL3_ST_CR_SESSION_TICKET_A;
310 s->state=SSL3_ST_CR_CERT_A;
314 case SSL3_ST_CR_CERT_A:
315 case SSL3_ST_CR_CERT_B:
316 #ifndef OPENSSL_NO_TLSEXT
317 ret=ssl3_check_finished(s);
318 if (ret <= 0) goto end;
322 if (s->tlsext_ticket_expected)
323 s->state=SSL3_ST_CR_SESSION_TICKET_A;
325 s->state=SSL3_ST_CR_FINISHED_A;
330 /* Check if it is anon DH/ECDH */
332 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
333 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
335 ret=ssl3_get_server_certificate(s);
336 if (ret <= 0) goto end;
337 #ifndef OPENSSL_NO_TLSEXT
338 if (s->tlsext_status_expected)
339 s->state=SSL3_ST_CR_CERT_STATUS_A;
341 s->state=SSL3_ST_CR_KEY_EXCH_A;
346 s->state=SSL3_ST_CR_KEY_EXCH_A;
353 s->state=SSL3_ST_CR_KEY_EXCH_A;
358 case SSL3_ST_CR_KEY_EXCH_A:
359 case SSL3_ST_CR_KEY_EXCH_B:
360 ret=ssl3_get_key_exchange(s);
361 if (ret <= 0) goto end;
362 s->state=SSL3_ST_CR_CERT_REQ_A;
365 /* at this point we check that we have the
366 * required stuff from the server */
367 if (!ssl3_check_cert_and_algorithm(s))
374 case SSL3_ST_CR_CERT_REQ_A:
375 case SSL3_ST_CR_CERT_REQ_B:
376 ret=ssl3_get_certificate_request(s);
377 if (ret <= 0) goto end;
378 s->state=SSL3_ST_CR_SRVR_DONE_A;
382 case SSL3_ST_CR_SRVR_DONE_A:
383 case SSL3_ST_CR_SRVR_DONE_B:
384 ret=ssl3_get_server_done(s);
385 if (ret <= 0) goto end;
386 #ifndef OPENSSL_NO_SRP
387 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP)
389 if ((ret = SRP_Calc_A_param(s))<=0)
391 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SRP_A_CALC);
392 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
397 if (s->s3->tmp.cert_req)
398 s->state=SSL3_ST_CW_CERT_A;
400 s->state=SSL3_ST_CW_KEY_EXCH_A;
405 case SSL3_ST_CW_CERT_A:
406 case SSL3_ST_CW_CERT_B:
407 case SSL3_ST_CW_CERT_C:
408 case SSL3_ST_CW_CERT_D:
409 ret=ssl3_send_client_certificate(s);
410 if (ret <= 0) goto end;
411 s->state=SSL3_ST_CW_KEY_EXCH_A;
415 case SSL3_ST_CW_KEY_EXCH_A:
416 case SSL3_ST_CW_KEY_EXCH_B:
417 ret=ssl3_send_client_key_exchange(s);
418 if (ret <= 0) goto end;
419 /* EAY EAY EAY need to check for DH fix cert
421 /* For TLS, cert_req is set to 2, so a cert chain
422 * of nothing is sent, but no verify packet is sent */
423 /* XXX: For now, we do not support client
424 * authentication in ECDH cipher suites with
425 * ECDH (rather than ECDSA) certificates.
426 * We need to skip the certificate verify
427 * message when client's ECDH public key is sent
428 * inside the client certificate.
430 if (s->s3->tmp.cert_req == 1)
432 s->state=SSL3_ST_CW_CERT_VRFY_A;
436 s->state=SSL3_ST_CW_CHANGE_A;
437 s->s3->change_cipher_spec=0;
439 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
441 s->state=SSL3_ST_CW_CHANGE_A;
442 s->s3->change_cipher_spec=0;
448 case SSL3_ST_CW_CERT_VRFY_A:
449 case SSL3_ST_CW_CERT_VRFY_B:
450 ret=ssl3_send_client_verify(s);
451 if (ret <= 0) goto end;
452 s->state=SSL3_ST_CW_CHANGE_A;
454 s->s3->change_cipher_spec=0;
457 case SSL3_ST_CW_CHANGE_A:
458 case SSL3_ST_CW_CHANGE_B:
459 ret=ssl3_send_change_cipher_spec(s,
460 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
461 if (ret <= 0) goto end;
463 #if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
464 s->state=SSL3_ST_CW_FINISHED_A;
466 if (s->s3->next_proto_neg_seen)
467 s->state=SSL3_ST_CW_NEXT_PROTO_A;
469 s->state=SSL3_ST_CW_FINISHED_A;
473 s->session->cipher=s->s3->tmp.new_cipher;
474 #ifdef OPENSSL_NO_COMP
475 s->session->compress_meth=0;
477 if (s->s3->tmp.new_compression == NULL)
478 s->session->compress_meth=0;
480 s->session->compress_meth=
481 s->s3->tmp.new_compression->id;
483 if (!s->method->ssl3_enc->setup_key_block(s))
489 if (!s->method->ssl3_enc->change_cipher_state(s,
490 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
498 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
499 case SSL3_ST_CW_NEXT_PROTO_A:
500 case SSL3_ST_CW_NEXT_PROTO_B:
501 ret=ssl3_send_next_proto(s);
502 if (ret <= 0) goto end;
503 s->state=SSL3_ST_CW_FINISHED_A;
507 case SSL3_ST_CW_FINISHED_A:
508 case SSL3_ST_CW_FINISHED_B:
509 ret=ssl3_send_finished(s,
510 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
511 s->method->ssl3_enc->client_finished_label,
512 s->method->ssl3_enc->client_finished_label_len);
513 if (ret <= 0) goto end;
514 s->state=SSL3_ST_CW_FLUSH;
517 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
520 s->s3->tmp.next_state=SSL_ST_OK;
521 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
524 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
525 s->s3->delay_buf_pop_ret=0;
530 #ifndef OPENSSL_NO_TLSEXT
531 /* Allow NewSessionTicket if ticket expected */
532 if (s->tlsext_ticket_expected)
533 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
537 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
542 #ifndef OPENSSL_NO_TLSEXT
543 case SSL3_ST_CR_SESSION_TICKET_A:
544 case SSL3_ST_CR_SESSION_TICKET_B:
545 ret=ssl3_get_new_session_ticket(s);
546 if (ret <= 0) goto end;
547 s->state=SSL3_ST_CR_FINISHED_A;
551 case SSL3_ST_CR_CERT_STATUS_A:
552 case SSL3_ST_CR_CERT_STATUS_B:
553 ret=ssl3_get_cert_status(s);
554 if (ret <= 0) goto end;
555 s->state=SSL3_ST_CR_KEY_EXCH_A;
560 case SSL3_ST_CR_FINISHED_A:
561 case SSL3_ST_CR_FINISHED_B:
563 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
564 SSL3_ST_CR_FINISHED_B);
565 if (ret <= 0) goto end;
568 s->state=SSL3_ST_CW_CHANGE_A;
574 case SSL3_ST_CW_FLUSH:
575 s->rwstate=SSL_WRITING;
576 if (BIO_flush(s->wbio) <= 0)
581 s->rwstate=SSL_NOTHING;
582 s->state=s->s3->tmp.next_state;
586 /* clean a few things up */
587 ssl3_cleanup_key_block(s);
589 if (s->init_buf != NULL)
591 BUF_MEM_free(s->init_buf);
595 /* If we are not 'joining' the last two packets,
596 * remove the buffering now */
597 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
598 ssl_free_wbio_buffer(s);
599 /* else do it later in ssl3_write */
605 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
606 if (s->hit) s->ctx->stats.sess_hit++;
610 s->handshake_func=ssl3_connect;
611 s->ctx->stats.sess_connect_good++;
613 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
619 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
625 /* did we do anything */
626 if (!s->s3->tmp.reuse_message && !skip)
630 if ((ret=BIO_flush(s->wbio)) <= 0)
634 if ((cb != NULL) && (s->state != state))
638 cb(s,SSL_CB_CONNECT_LOOP,1);
649 cb(s,SSL_CB_CONNECT_EXIT,ret);
654 int ssl3_client_hello(SSL *s)
659 unsigned long Time,l;
660 #ifndef OPENSSL_NO_COMP
665 buf=(unsigned char *)s->init_buf->data;
666 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
668 SSL_SESSION *sess = s->session;
669 if ((sess == NULL) ||
670 (sess->ssl_version != s->version) ||
671 #ifdef OPENSSL_NO_TLSEXT
672 !sess->session_id_length ||
674 (!sess->session_id_length && !sess->tlsext_tick) ||
676 (sess->not_resumable))
678 if (!ssl_get_new_session(s,0))
681 /* else use the pre-loaded session */
683 p=s->s3->client_random;
684 Time=(unsigned long)time(NULL); /* Time */
686 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
689 /* Do the message type and length last */
692 /* version indicates the negotiated version: for example from
693 * an SSLv2/v3 compatible client hello). The client_version
694 * field is the maximum version we permit and it is also
695 * used in RSA encrypted premaster secrets. Some servers can
696 * choke if we initially report a higher version then
697 * renegotiate to a lower one in the premaster secret. This
698 * didn't happen with TLS 1.0 as most servers supported it
699 * but it can with TLS 1.1 or later if the server only supports
702 * Possible scenario with previous logic:
703 * 1. Client hello indicates TLS 1.2
704 * 2. Server hello says TLS 1.0
705 * 3. RSA encrypted premaster secret uses 1.2.
706 * 4. Handhaked proceeds using TLS 1.0.
707 * 5. Server sends hello request to renegotiate.
708 * 6. Client hello indicates TLS v1.0 as we now
709 * know that is maximum server supports.
710 * 7. Server chokes on RSA encrypted premaster secret
711 * containing version 1.0.
713 * For interoperability it should be OK to always use the
714 * maximum version we support in client hello and then rely
715 * on the checking of version to ensure the servers isn't
716 * being inconsistent: for example initially negotiating with
717 * TLS 1.0 and renegotiating with TLS 1.2. We do this by using
718 * client_version in client hello and not resetting it to
719 * the negotiated version.
722 *(p++)=s->version>>8;
723 *(p++)=s->version&0xff;
724 s->client_version=s->version;
726 *(p++)=s->client_version>>8;
727 *(p++)=s->client_version&0xff;
731 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
738 i=s->session->session_id_length;
742 if (i > (int)sizeof(s->session->session_id))
744 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
747 memcpy(p,s->session->session_id,i);
751 /* Ciphers supported */
752 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
755 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
758 #ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
759 /* Some servers hang if client hello > 256 bytes
760 * as hack workaround chop number of supported ciphers
761 * to keep it well below this if we use TLS v1.2
763 if (TLS1_get_version(s) >= TLS1_2_VERSION
764 && i > OPENSSL_MAX_TLS1_2_CIPHER_LENGTH)
765 i = OPENSSL_MAX_TLS1_2_CIPHER_LENGTH & ~1;
771 #ifdef OPENSSL_NO_COMP
775 if ((s->options & SSL_OP_NO_COMPRESSION)
776 || !s->ctx->comp_methods)
779 j=sk_SSL_COMP_num(s->ctx->comp_methods);
783 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
787 *(p++)=0; /* Add the NULL method */
789 #ifndef OPENSSL_NO_TLSEXT
791 if (ssl_prepare_clienthello_tlsext(s) <= 0)
793 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
796 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
798 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
805 *(d++)=SSL3_MT_CLIENT_HELLO;
808 s->state=SSL3_ST_CW_CLNT_HELLO_B;
809 /* number of bytes to write */
814 /* SSL3_ST_CW_CLNT_HELLO_B */
815 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
820 int ssl3_get_server_hello(SSL *s)
822 STACK_OF(SSL_CIPHER) *sk;
825 int i,al=SSL_AD_INTERNAL_ERROR,ok;
828 #ifndef OPENSSL_NO_COMP
832 n=s->method->ssl_get_message(s,
833 SSL3_ST_CR_SRVR_HELLO_A,
834 SSL3_ST_CR_SRVR_HELLO_B,
839 if (!ok) return((int)n);
841 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
843 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
845 if ( s->d1->send_cookie == 0)
847 s->s3->tmp.reuse_message = 1;
850 else /* already sent a cookie */
852 al=SSL_AD_UNEXPECTED_MESSAGE;
853 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
859 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
861 al=SSL_AD_UNEXPECTED_MESSAGE;
862 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
866 d=p=(unsigned char *)s->init_msg;
868 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
870 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
871 s->version=(s->version&0xff00)|p[1];
872 al=SSL_AD_PROTOCOL_VERSION;
877 /* load the server hello data */
878 /* load the server random */
879 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
882 /* get the session-id */
885 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
887 al=SSL_AD_ILLEGAL_PARAMETER;
888 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
892 #ifndef OPENSSL_NO_TLSEXT
893 /* check if we want to resume the session based on external pre-shared secret */
894 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
896 SSL_CIPHER *pref_cipher=NULL;
897 s->session->master_key_length=sizeof(s->session->master_key);
898 if (s->tls_session_secret_cb(s, s->session->master_key,
899 &s->session->master_key_length,
901 s->tls_session_secret_cb_arg))
903 s->session->cipher = pref_cipher ?
904 pref_cipher : ssl_get_cipher_by_char(s, p+j);
907 #endif /* OPENSSL_NO_TLSEXT */
909 if (j != 0 && j == s->session->session_id_length
910 && memcmp(p,s->session->session_id,j) == 0)
912 if(s->sid_ctx_length != s->session->sid_ctx_length
913 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
915 /* actually a client application bug */
916 al=SSL_AD_ILLEGAL_PARAMETER;
917 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
922 else /* a miss or crap from the other end */
924 /* If we were trying for session-id reuse, make a new
925 * SSL_SESSION so we don't stuff up other people */
927 if (s->session->session_id_length > 0)
929 if (!ssl_get_new_session(s,0))
934 s->session->session_id_length=j;
935 memcpy(s->session->session_id,p,j); /* j could be 0 */
938 c=ssl_get_cipher_by_char(s,p);
942 al=SSL_AD_ILLEGAL_PARAMETER;
943 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
946 /* TLS v1.2 only ciphersuites require v1.2 or later */
947 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
948 (TLS1_get_version(s) < TLS1_2_VERSION))
950 al=SSL_AD_ILLEGAL_PARAMETER;
951 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
954 p+=ssl_put_cipher_by_char(s,NULL,NULL);
956 sk=ssl_get_ciphers_by_id(s);
957 i=sk_SSL_CIPHER_find(sk,c);
960 /* we did not say we would use this cipher */
961 al=SSL_AD_ILLEGAL_PARAMETER;
962 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
966 /* Depending on the session caching (internal/external), the cipher
967 and/or cipher_id values may not be set. Make sure that
968 cipher_id is set and use it for comparison. */
969 if (s->session->cipher)
970 s->session->cipher_id = s->session->cipher->id;
971 if (s->hit && (s->session->cipher_id != c->id))
973 /* Workaround is now obsolete */
976 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
979 al=SSL_AD_ILLEGAL_PARAMETER;
980 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
984 s->s3->tmp.new_cipher=c;
985 /* Don't digest cached records if TLS v1.2: we may need them for
986 * client authentication.
988 if (TLS1_get_version(s) < TLS1_2_VERSION && !ssl3_digest_cached_records(s))
990 /* lets get the compression algorithm */
992 #ifdef OPENSSL_NO_COMP
995 al=SSL_AD_ILLEGAL_PARAMETER;
996 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
999 /* If compression is disabled we'd better not try to resume a session
1000 * using compression.
1002 if (s->session->compress_meth != 0)
1004 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
1009 if (s->hit && j != s->session->compress_meth)
1011 al=SSL_AD_ILLEGAL_PARAMETER;
1012 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
1017 else if (s->options & SSL_OP_NO_COMPRESSION)
1019 al=SSL_AD_ILLEGAL_PARAMETER;
1020 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
1024 comp=ssl3_comp_find(s->ctx->comp_methods,j);
1026 if ((j != 0) && (comp == NULL))
1028 al=SSL_AD_ILLEGAL_PARAMETER;
1029 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
1034 s->s3->tmp.new_compression=comp;
1038 #ifndef OPENSSL_NO_TLSEXT
1040 if (!ssl_parse_serverhello_tlsext(s,&p,d,n))
1042 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
1049 /* wrong packet length */
1050 al=SSL_AD_DECODE_ERROR;
1051 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
1057 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1062 int ssl3_get_server_certificate(SSL *s)
1064 int al,i,ok,ret= -1;
1065 unsigned long n,nc,llen,l;
1067 const unsigned char *q,*p;
1069 STACK_OF(X509) *sk=NULL;
1071 EVP_PKEY *pkey=NULL;
1072 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1074 n=s->method->ssl_get_message(s,
1081 if (!ok) return((int)n);
1083 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1084 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1085 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1087 s->s3->tmp.reuse_message=1;
1091 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1093 al=SSL_AD_UNEXPECTED_MESSAGE;
1094 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1097 p=d=(unsigned char *)s->init_msg;
1099 if ((sk=sk_X509_new_null()) == NULL)
1101 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1108 al=SSL_AD_DECODE_ERROR;
1109 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1112 for (nc=0; nc<llen; )
1115 if ((l+nc+3) > llen)
1117 al=SSL_AD_DECODE_ERROR;
1118 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1123 x=d2i_X509(NULL,&q,l);
1126 al=SSL_AD_BAD_CERTIFICATE;
1127 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1132 al=SSL_AD_DECODE_ERROR;
1133 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1136 if (!sk_X509_push(sk,x))
1138 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1146 i=ssl_verify_cert_chain(s,sk);
1147 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1148 #ifndef OPENSSL_NO_KRB5
1149 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1150 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1151 #endif /* OPENSSL_NO_KRB5 */
1154 al=ssl_verify_alarm_type(s->verify_result);
1155 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1158 ERR_clear_error(); /* but we keep s->verify_result */
1160 sc=ssl_sess_cert_new();
1161 if (sc == NULL) goto err;
1163 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1164 s->session->sess_cert=sc;
1167 /* Inconsistency alert: cert_chain does include the peer's
1168 * certificate, which we don't include in s3_srvr.c */
1169 x=sk_X509_value(sk,0);
1171 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1173 pkey=X509_get_pubkey(x);
1175 /* VRS: allow null cert if auth == KRB5 */
1176 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1177 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1181 printf("pkey,x = %p, %p\n", pkey,x);
1182 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1183 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1184 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1185 #endif /* KSSL_DEBUG */
1187 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1191 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1192 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1196 i=ssl_cert_type(x,pkey);
1197 if (need_cert && i < 0)
1201 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1202 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1208 sc->peer_cert_type=i;
1209 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1210 /* Why would the following ever happen?
1211 * We just created sc a couple of lines ago. */
1212 if (sc->peer_pkeys[i].x509 != NULL)
1213 X509_free(sc->peer_pkeys[i].x509);
1214 sc->peer_pkeys[i].x509=x;
1215 sc->peer_key= &(sc->peer_pkeys[i]);
1217 if (s->session->peer != NULL)
1218 X509_free(s->session->peer);
1219 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1224 sc->peer_cert_type=i;
1227 if (s->session->peer != NULL)
1228 X509_free(s->session->peer);
1229 s->session->peer=NULL;
1231 s->session->verify_result = s->verify_result;
1239 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1242 EVP_PKEY_free(pkey);
1244 sk_X509_pop_free(sk,X509_free);
1248 int ssl3_get_key_exchange(SSL *s)
1250 #ifndef OPENSSL_NO_RSA
1251 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1254 unsigned char *param,*p;
1255 int al,i,j,param_len,ok;
1257 EVP_PKEY *pkey=NULL;
1258 const EVP_MD *md = NULL;
1259 #ifndef OPENSSL_NO_RSA
1262 #ifndef OPENSSL_NO_DH
1265 #ifndef OPENSSL_NO_ECDH
1266 EC_KEY *ecdh = NULL;
1267 BN_CTX *bn_ctx = NULL;
1268 EC_POINT *srvr_ecpoint = NULL;
1270 int encoded_pt_len = 0;
1273 /* use same message size as in ssl3_get_certificate_request()
1274 * as ServerKeyExchange message may be skipped */
1275 n=s->method->ssl_get_message(s,
1276 SSL3_ST_CR_KEY_EXCH_A,
1277 SSL3_ST_CR_KEY_EXCH_B,
1281 if (!ok) return((int)n);
1283 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1285 #ifndef OPENSSL_NO_PSK
1286 /* In plain PSK ciphersuite, ServerKeyExchange can be
1287 omitted if no identity hint is sent. Set
1288 session->sess_cert anyway to avoid problems
1290 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1292 s->session->sess_cert=ssl_sess_cert_new();
1293 if (s->ctx->psk_identity_hint)
1294 OPENSSL_free(s->ctx->psk_identity_hint);
1295 s->ctx->psk_identity_hint = NULL;
1298 s->s3->tmp.reuse_message=1;
1302 param=p=(unsigned char *)s->init_msg;
1303 if (s->session->sess_cert != NULL)
1305 #ifndef OPENSSL_NO_RSA
1306 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1308 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1309 s->session->sess_cert->peer_rsa_tmp=NULL;
1312 #ifndef OPENSSL_NO_DH
1313 if (s->session->sess_cert->peer_dh_tmp)
1315 DH_free(s->session->sess_cert->peer_dh_tmp);
1316 s->session->sess_cert->peer_dh_tmp=NULL;
1319 #ifndef OPENSSL_NO_ECDH
1320 if (s->session->sess_cert->peer_ecdh_tmp)
1322 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1323 s->session->sess_cert->peer_ecdh_tmp=NULL;
1329 s->session->sess_cert=ssl_sess_cert_new();
1333 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1334 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1335 EVP_MD_CTX_init(&md_ctx);
1337 #ifndef OPENSSL_NO_PSK
1338 if (alg_k & SSL_kPSK)
1340 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1342 al=SSL_AD_HANDSHAKE_FAILURE;
1345 /* Store PSK identity hint for later use, hint is used
1346 * in ssl3_send_client_key_exchange. Assume that the
1347 * maximum length of a PSK identity hint can be as
1348 * long as the maximum length of a PSK identity. */
1349 if (i > PSK_MAX_IDENTITY_LEN)
1351 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1352 SSL_R_DATA_LENGTH_TOO_LONG);
1357 al=SSL_AD_DECODE_ERROR;
1358 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1359 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1362 /* If received PSK identity hint contains NULL
1363 * characters, the hint is truncated from the first
1364 * NULL. p may not be ending with NULL, so create a
1365 * NULL-terminated string. */
1366 memcpy(tmp_id_hint, p, i);
1367 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1368 if (s->ctx->psk_identity_hint != NULL)
1369 OPENSSL_free(s->ctx->psk_identity_hint);
1370 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1371 if (s->ctx->psk_identity_hint == NULL)
1373 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1381 #endif /* !OPENSSL_NO_PSK */
1382 #ifndef OPENSSL_NO_SRP
1383 if (alg_k & SSL_kSRP)
1389 al=SSL_AD_DECODE_ERROR;
1390 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1393 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1395 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1404 al=SSL_AD_DECODE_ERROR;
1405 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1408 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1410 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1415 i = (unsigned int)(p[0]);
1420 al=SSL_AD_DECODE_ERROR;
1421 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1424 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1426 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1435 al=SSL_AD_DECODE_ERROR;
1436 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1439 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1441 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1447 /* We must check if there is a certificate */
1448 #ifndef OPENSSL_NO_RSA
1449 if (alg_a & SSL_aRSA)
1450 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1455 #ifndef OPENSSL_NO_DSA
1456 else if (alg_a & SSL_aDSS)
1457 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1461 #endif /* !OPENSSL_NO_SRP */
1462 #ifndef OPENSSL_NO_RSA
1463 if (alg_k & SSL_kRSA)
1465 if ((rsa=RSA_new()) == NULL)
1467 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1474 al=SSL_AD_DECODE_ERROR;
1475 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1478 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1480 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1489 al=SSL_AD_DECODE_ERROR;
1490 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1493 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1495 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1501 /* this should be because we are using an export cipher */
1502 if (alg_a & SSL_aRSA)
1503 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1506 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1509 s->session->sess_cert->peer_rsa_tmp=rsa;
1512 #else /* OPENSSL_NO_RSA */
1516 #ifndef OPENSSL_NO_DH
1517 else if (alg_k & SSL_kEDH)
1519 if ((dh=DH_new()) == NULL)
1521 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1528 al=SSL_AD_DECODE_ERROR;
1529 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1532 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1534 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1543 al=SSL_AD_DECODE_ERROR;
1544 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1547 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1549 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1558 al=SSL_AD_DECODE_ERROR;
1559 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1562 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1564 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1570 #ifndef OPENSSL_NO_RSA
1571 if (alg_a & SSL_aRSA)
1572 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1577 #ifndef OPENSSL_NO_DSA
1578 else if (alg_a & SSL_aDSS)
1579 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1581 /* else anonymous DH, so no certificate or pkey. */
1583 s->session->sess_cert->peer_dh_tmp=dh;
1586 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1588 al=SSL_AD_ILLEGAL_PARAMETER;
1589 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1592 #endif /* !OPENSSL_NO_DH */
1594 #ifndef OPENSSL_NO_ECDH
1595 else if (alg_k & SSL_kEECDH)
1598 const EC_GROUP *group;
1600 if ((ecdh=EC_KEY_new()) == NULL)
1602 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1606 /* Extract elliptic curve parameters and the
1607 * server's ephemeral ECDH public key.
1608 * Keep accumulating lengths of various components in
1609 * param_len and make sure it never exceeds n.
1612 /* XXX: For now we only support named (not generic) curves
1613 * and the ECParameters in this case is just three bytes.
1616 if ((param_len > n) ||
1617 (*p != NAMED_CURVE_TYPE) ||
1618 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1620 al=SSL_AD_INTERNAL_ERROR;
1621 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1625 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1628 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1631 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1633 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1636 EC_GROUP_free(ngroup);
1638 group = EC_KEY_get0_group(ecdh);
1640 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1641 (EC_GROUP_get_degree(group) > 163))
1643 al=SSL_AD_EXPORT_RESTRICTION;
1644 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1650 /* Next, get the encoded ECPoint */
1651 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1652 ((bn_ctx = BN_CTX_new()) == NULL))
1654 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1658 encoded_pt_len = *p; /* length of encoded point */
1660 param_len += (1 + encoded_pt_len);
1661 if ((param_len > n) ||
1662 (EC_POINT_oct2point(group, srvr_ecpoint,
1663 p, encoded_pt_len, bn_ctx) == 0))
1665 al=SSL_AD_DECODE_ERROR;
1666 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1673 /* The ECC/TLS specification does not mention
1674 * the use of DSA to sign ECParameters in the server
1675 * key exchange message. We do support RSA and ECDSA.
1678 #ifndef OPENSSL_NO_RSA
1679 else if (alg_a & SSL_aRSA)
1680 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1682 #ifndef OPENSSL_NO_ECDSA
1683 else if (alg_a & SSL_aECDSA)
1684 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1686 /* else anonymous ECDH, so no certificate or pkey. */
1687 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1688 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1690 BN_CTX_free(bn_ctx);
1692 EC_POINT_free(srvr_ecpoint);
1693 srvr_ecpoint = NULL;
1697 al=SSL_AD_UNEXPECTED_MESSAGE;
1698 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1701 #endif /* !OPENSSL_NO_ECDH */
1704 /* p points to the next byte, there are 'n' bytes left */
1706 /* if it was signed, check the signature */
1709 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1711 int sigalg = tls12_get_sigid(pkey);
1712 /* Should never happen */
1715 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1718 /* Check key type is consistent with signature */
1719 if (sigalg != (int)p[1])
1721 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE);
1722 al=SSL_AD_DECODE_ERROR;
1725 md = tls12_get_hash(p[0]);
1728 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
1729 al=SSL_AD_DECODE_ERROR;
1733 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1743 j=EVP_PKEY_size(pkey);
1745 if ((i != n) || (n > j) || (n <= 0))
1747 /* wrong packet length */
1748 al=SSL_AD_DECODE_ERROR;
1749 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1753 #ifndef OPENSSL_NO_RSA
1754 if (pkey->type == EVP_PKEY_RSA && TLS1_get_version(s) < TLS1_2_VERSION)
1760 for (num=2; num > 0; num--)
1762 EVP_MD_CTX_set_flags(&md_ctx,
1763 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1764 EVP_DigestInit_ex(&md_ctx,(num == 2)
1765 ?s->ctx->md5:s->ctx->sha1, NULL);
1766 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1767 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1768 EVP_DigestUpdate(&md_ctx,param,param_len);
1769 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1773 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1777 al=SSL_AD_DECRYPT_ERROR;
1778 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1784 al=SSL_AD_DECRYPT_ERROR;
1785 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1792 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1793 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1794 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1795 EVP_VerifyUpdate(&md_ctx,param,param_len);
1796 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1799 al=SSL_AD_DECRYPT_ERROR;
1800 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1807 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1808 /* aNULL or kPSK do not need public keys */
1810 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1813 /* still data left over */
1816 al=SSL_AD_DECODE_ERROR;
1817 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1821 EVP_PKEY_free(pkey);
1822 EVP_MD_CTX_cleanup(&md_ctx);
1825 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1827 EVP_PKEY_free(pkey);
1828 #ifndef OPENSSL_NO_RSA
1832 #ifndef OPENSSL_NO_DH
1836 #ifndef OPENSSL_NO_ECDH
1837 BN_CTX_free(bn_ctx);
1838 EC_POINT_free(srvr_ecpoint);
1842 EVP_MD_CTX_cleanup(&md_ctx);
1846 int ssl3_get_certificate_request(SSL *s)
1849 unsigned long n,nc,l;
1850 unsigned int llen, ctype_num,i;
1852 const unsigned char *p,*q;
1854 STACK_OF(X509_NAME) *ca_sk=NULL;
1856 n=s->method->ssl_get_message(s,
1857 SSL3_ST_CR_CERT_REQ_A,
1858 SSL3_ST_CR_CERT_REQ_B,
1863 if (!ok) return((int)n);
1865 s->s3->tmp.cert_req=0;
1867 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1869 s->s3->tmp.reuse_message=1;
1870 /* If we get here we don't need any cached handshake records
1871 * as we wont be doing client auth.
1873 if (s->s3->handshake_buffer)
1875 if (!ssl3_digest_cached_records(s))
1881 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1883 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1884 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1888 /* TLS does not like anon-DH with client cert */
1889 if (s->version > SSL3_VERSION)
1891 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1893 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1894 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1899 p=d=(unsigned char *)s->init_msg;
1901 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1903 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1907 /* get the certificate types */
1909 if (ctype_num > SSL3_CT_NUMBER)
1910 ctype_num=SSL3_CT_NUMBER;
1911 for (i=0; i<ctype_num; i++)
1912 s->s3->tmp.ctype[i]= p[i];
1914 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1917 /* Check we have enough room for signature algorithms and
1918 * following length value.
1920 if ((unsigned long)(p - d + llen + 2) > n)
1922 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1923 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
1926 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
1928 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1929 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
1935 /* get the CA RDNs */
1940 out=fopen("/tmp/vsign.der","w");
1941 fwrite(p,1,llen,out);
1946 if ((unsigned long)(p - d + llen) != n)
1948 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1949 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1953 for (nc=0; nc<llen; )
1956 if ((l+nc+2) > llen)
1958 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1959 goto cont; /* netscape bugs */
1960 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1961 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1967 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1969 /* If netscape tolerance is on, ignore errors */
1970 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1974 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1975 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1982 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1983 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1986 if (!sk_X509_NAME_push(ca_sk,xn))
1988 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
2002 /* we should setup a certificate to return.... */
2003 s->s3->tmp.cert_req=1;
2004 s->s3->tmp.ctype_num=ctype_num;
2005 if (s->s3->tmp.ca_names != NULL)
2006 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
2007 s->s3->tmp.ca_names=ca_sk;
2012 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
2016 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
2018 return(X509_NAME_cmp(*a,*b));
2020 #ifndef OPENSSL_NO_TLSEXT
2021 int ssl3_get_new_session_ticket(SSL *s)
2023 int ok,al,ret=0, ticklen;
2025 const unsigned char *p;
2028 n=s->method->ssl_get_message(s,
2029 SSL3_ST_CR_SESSION_TICKET_A,
2030 SSL3_ST_CR_SESSION_TICKET_B,
2038 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
2040 s->s3->tmp.reuse_message=1;
2043 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
2045 al=SSL_AD_UNEXPECTED_MESSAGE;
2046 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
2051 /* need at least ticket_lifetime_hint + ticket length */
2052 al = SSL_AD_DECODE_ERROR;
2053 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2057 p=d=(unsigned char *)s->init_msg;
2058 n2l(p, s->session->tlsext_tick_lifetime_hint);
2060 /* ticket_lifetime_hint + ticket_length + ticket */
2061 if (ticklen + 6 != n)
2063 al = SSL_AD_DECODE_ERROR;
2064 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2067 if (s->session->tlsext_tick)
2069 OPENSSL_free(s->session->tlsext_tick);
2070 s->session->tlsext_ticklen = 0;
2072 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2073 if (!s->session->tlsext_tick)
2075 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2078 memcpy(s->session->tlsext_tick, p, ticklen);
2079 s->session->tlsext_ticklen = ticklen;
2080 /* There are two ways to detect a resumed ticket sesion.
2081 * One is to set an appropriate session ID and then the server
2082 * must return a match in ServerHello. This allows the normal
2083 * client session ID matching to work and we know much
2084 * earlier that the ticket has been accepted.
2086 * The other way is to set zero length session ID when the
2087 * ticket is presented and rely on the handshake to determine
2088 * session resumption.
2090 * We choose the former approach because this fits in with
2091 * assumptions elsewhere in OpenSSL. The session ID is set
2092 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2095 EVP_Digest(p, ticklen,
2096 s->session->session_id, &s->session->session_id_length,
2097 #ifndef OPENSSL_NO_SHA256
2098 EVP_sha256(), NULL);
2105 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2110 int ssl3_get_cert_status(SSL *s)
2113 unsigned long resplen,n;
2114 const unsigned char *p;
2116 n=s->method->ssl_get_message(s,
2117 SSL3_ST_CR_CERT_STATUS_A,
2118 SSL3_ST_CR_CERT_STATUS_B,
2119 SSL3_MT_CERTIFICATE_STATUS,
2123 if (!ok) return((int)n);
2126 /* need at least status type + length */
2127 al = SSL_AD_DECODE_ERROR;
2128 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2131 p = (unsigned char *)s->init_msg;
2132 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2134 al = SSL_AD_DECODE_ERROR;
2135 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2139 if (resplen + 4 != n)
2141 al = SSL_AD_DECODE_ERROR;
2142 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2145 if (s->tlsext_ocsp_resp)
2146 OPENSSL_free(s->tlsext_ocsp_resp);
2147 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2148 if (!s->tlsext_ocsp_resp)
2150 al = SSL_AD_INTERNAL_ERROR;
2151 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2154 s->tlsext_ocsp_resplen = resplen;
2155 if (s->ctx->tlsext_status_cb)
2158 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2161 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2162 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2167 al = SSL_AD_INTERNAL_ERROR;
2168 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2174 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2179 int ssl3_get_server_done(SSL *s)
2184 n=s->method->ssl_get_message(s,
2185 SSL3_ST_CR_SRVR_DONE_A,
2186 SSL3_ST_CR_SRVR_DONE_B,
2187 SSL3_MT_SERVER_DONE,
2188 30, /* should be very small, like 0 :-) */
2191 if (!ok) return((int)n);
2194 /* should contain no data */
2195 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2196 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2204 int ssl3_send_client_key_exchange(SSL *s)
2206 unsigned char *p,*d;
2208 unsigned long alg_k;
2209 #ifndef OPENSSL_NO_RSA
2211 EVP_PKEY *pkey=NULL;
2213 #ifndef OPENSSL_NO_KRB5
2215 #endif /* OPENSSL_NO_KRB5 */
2216 #ifndef OPENSSL_NO_ECDH
2217 EC_KEY *clnt_ecdh = NULL;
2218 const EC_POINT *srvr_ecpoint = NULL;
2219 EVP_PKEY *srvr_pub_pkey = NULL;
2220 unsigned char *encodedPoint = NULL;
2221 int encoded_pt_len = 0;
2222 BN_CTX * bn_ctx = NULL;
2225 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2227 d=(unsigned char *)s->init_buf->data;
2230 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2232 /* Fool emacs indentation */
2234 #ifndef OPENSSL_NO_RSA
2235 else if (alg_k & SSL_kRSA)
2238 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2240 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2241 rsa=s->session->sess_cert->peer_rsa_tmp;
2244 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2245 if ((pkey == NULL) ||
2246 (pkey->type != EVP_PKEY_RSA) ||
2247 (pkey->pkey.rsa == NULL))
2249 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2253 EVP_PKEY_free(pkey);
2256 tmp_buf[0]=s->client_version>>8;
2257 tmp_buf[1]=s->client_version&0xff;
2258 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2261 s->session->master_key_length=sizeof tmp_buf;
2264 /* Fix buf for TLS and beyond */
2265 if (s->version > SSL3_VERSION)
2267 n=RSA_public_encrypt(sizeof tmp_buf,
2268 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2270 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2271 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2275 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2279 /* Fix buf for TLS and beyond */
2280 if (s->version > SSL3_VERSION)
2286 s->session->master_key_length=
2287 s->method->ssl3_enc->generate_master_secret(s,
2288 s->session->master_key,
2289 tmp_buf,sizeof tmp_buf);
2290 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2293 #ifndef OPENSSL_NO_KRB5
2294 else if (alg_k & SSL_kKRB5)
2296 krb5_error_code krb5rc;
2297 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2298 /* krb5_data krb5_ap_req; */
2299 krb5_data *enc_ticket;
2300 krb5_data authenticator, *authp = NULL;
2301 EVP_CIPHER_CTX ciph_ctx;
2302 const EVP_CIPHER *enc = NULL;
2303 unsigned char iv[EVP_MAX_IV_LENGTH];
2304 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2305 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2306 + EVP_MAX_IV_LENGTH];
2307 int padl, outl = sizeof(epms);
2309 EVP_CIPHER_CTX_init(&ciph_ctx);
2312 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2314 #endif /* KSSL_DEBUG */
2318 if (KRB5SENDAUTH) authp = &authenticator;
2319 #endif /* KRB5SENDAUTH */
2321 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2323 enc = kssl_map_enc(kssl_ctx->enctype);
2328 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2329 if (krb5rc && kssl_err.text)
2330 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2332 #endif /* KSSL_DEBUG */
2336 ssl3_send_alert(s,SSL3_AL_FATAL,
2337 SSL_AD_HANDSHAKE_FAILURE);
2338 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2343 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2344 ** in place of RFC 2712 KerberosWrapper, as in:
2346 ** Send ticket (copy to *p, set n = length)
2347 ** n = krb5_ap_req.length;
2348 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2349 ** if (krb5_ap_req.data)
2350 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2352 ** Now using real RFC 2712 KerberosWrapper
2353 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2354 ** Note: 2712 "opaque" types are here replaced
2355 ** with a 2-byte length followed by the value.
2357 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2358 ** Where "xx xx" = length bytes. Shown here with
2359 ** optional authenticator omitted.
2362 /* KerberosWrapper.Ticket */
2363 s2n(enc_ticket->length,p);
2364 memcpy(p, enc_ticket->data, enc_ticket->length);
2365 p+= enc_ticket->length;
2366 n = enc_ticket->length + 2;
2368 /* KerberosWrapper.Authenticator */
2369 if (authp && authp->length)
2371 s2n(authp->length,p);
2372 memcpy(p, authp->data, authp->length);
2374 n+= authp->length + 2;
2382 s2n(0,p);/* null authenticator length */
2386 tmp_buf[0]=s->client_version>>8;
2387 tmp_buf[1]=s->client_version&0xff;
2388 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2391 /* 20010420 VRS. Tried it this way; failed.
2392 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2393 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2394 ** kssl_ctx->length);
2395 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2398 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2399 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2401 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2403 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2405 if (outl > (int)sizeof epms)
2407 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2410 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2412 /* KerberosWrapper.EncryptedPreMasterSecret */
2414 memcpy(p, epms, outl);
2418 s->session->master_key_length=
2419 s->method->ssl3_enc->generate_master_secret(s,
2420 s->session->master_key,
2421 tmp_buf, sizeof tmp_buf);
2423 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2424 OPENSSL_cleanse(epms, outl);
2427 #ifndef OPENSSL_NO_DH
2428 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2430 DH *dh_srvr,*dh_clnt;
2431 SESS_CERT *scert = s->session->sess_cert;
2435 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2436 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2440 if (scert->peer_dh_tmp != NULL)
2441 dh_srvr=scert->peer_dh_tmp;
2444 /* we get them from the cert */
2445 int idx = scert->peer_cert_type;
2446 EVP_PKEY *spkey = NULL;
2449 spkey = X509_get_pubkey(
2450 scert->peer_pkeys[idx].x509);
2453 dh_srvr = EVP_PKEY_get1_DH(spkey);
2454 EVP_PKEY_free(spkey);
2456 if (dh_srvr == NULL)
2458 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2459 ERR_R_INTERNAL_ERROR);
2463 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
2465 /* Use client certificate key */
2466 EVP_PKEY *clkey = s->cert->key->privatekey;
2469 dh_clnt = EVP_PKEY_get1_DH(clkey);
2470 if (dh_clnt == NULL)
2472 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2473 ERR_R_INTERNAL_ERROR);
2479 /* generate a new random key */
2480 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2482 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2485 if (!DH_generate_key(dh_clnt))
2487 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2493 /* use the 'p' output buffer for the DH key, but
2494 * make sure to clear it out afterwards */
2496 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2497 if (scert->peer_dh_tmp == NULL)
2502 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2507 /* generate master key from the result */
2508 s->session->master_key_length=
2509 s->method->ssl3_enc->generate_master_secret(s,
2510 s->session->master_key,p,n);
2514 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
2518 /* send off the data */
2519 n=BN_num_bytes(dh_clnt->pub_key);
2521 BN_bn2bin(dh_clnt->pub_key,p);
2527 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2531 #ifndef OPENSSL_NO_ECDH
2532 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2534 const EC_GROUP *srvr_group = NULL;
2536 int ecdh_clnt_cert = 0;
2539 /* Did we send out the client's
2540 * ECDH share for use in premaster
2541 * computation as part of client certificate?
2542 * If so, set ecdh_clnt_cert to 1.
2544 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2546 /* XXX: For now, we do not support client
2547 * authentication using ECDH certificates.
2548 * To add such support, one needs to add
2549 * code that checks for appropriate
2550 * conditions and sets ecdh_clnt_cert to 1.
2551 * For example, the cert have an ECC
2552 * key on the same curve as the server's
2553 * and the key should be authorized for
2556 * One also needs to add code in ssl3_connect
2557 * to skip sending the certificate verify
2560 * if ((s->cert->key->privatekey != NULL) &&
2561 * (s->cert->key->privatekey->type ==
2562 * EVP_PKEY_EC) && ...)
2563 * ecdh_clnt_cert = 1;
2567 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2569 tkey = s->session->sess_cert->peer_ecdh_tmp;
2573 /* Get the Server Public Key from Cert */
2574 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2575 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2576 if ((srvr_pub_pkey == NULL) ||
2577 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2578 (srvr_pub_pkey->pkey.ec == NULL))
2580 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2581 ERR_R_INTERNAL_ERROR);
2585 tkey = srvr_pub_pkey->pkey.ec;
2588 srvr_group = EC_KEY_get0_group(tkey);
2589 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2591 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2593 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2594 ERR_R_INTERNAL_ERROR);
2598 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2600 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2604 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2606 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2611 /* Reuse key info from our certificate
2612 * We only need our private key to perform
2613 * the ECDH computation.
2615 const BIGNUM *priv_key;
2616 tkey = s->cert->key->privatekey->pkey.ec;
2617 priv_key = EC_KEY_get0_private_key(tkey);
2618 if (priv_key == NULL)
2620 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2623 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2625 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2631 /* Generate a new ECDH key pair */
2632 if (!(EC_KEY_generate_key(clnt_ecdh)))
2634 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2639 /* use the 'p' output buffer for the ECDH key, but
2640 * make sure to clear it out afterwards
2643 field_size = EC_GROUP_get_degree(srvr_group);
2644 if (field_size <= 0)
2646 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2650 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2653 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2658 /* generate master key from the result */
2659 s->session->master_key_length = s->method->ssl3_enc \
2660 -> generate_master_secret(s,
2661 s->session->master_key,
2664 memset(p, 0, n); /* clean up */
2668 /* Send empty client key exch message */
2673 /* First check the size of encoding and
2674 * allocate memory accordingly.
2677 EC_POINT_point2oct(srvr_group,
2678 EC_KEY_get0_public_key(clnt_ecdh),
2679 POINT_CONVERSION_UNCOMPRESSED,
2682 encodedPoint = (unsigned char *)
2683 OPENSSL_malloc(encoded_pt_len *
2684 sizeof(unsigned char));
2685 bn_ctx = BN_CTX_new();
2686 if ((encodedPoint == NULL) ||
2689 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2693 /* Encode the public key */
2694 n = EC_POINT_point2oct(srvr_group,
2695 EC_KEY_get0_public_key(clnt_ecdh),
2696 POINT_CONVERSION_UNCOMPRESSED,
2697 encodedPoint, encoded_pt_len, bn_ctx);
2699 *p = n; /* length of encoded point */
2700 /* Encoded point will be copied here */
2702 /* copy the point */
2703 memcpy((unsigned char *)p, encodedPoint, n);
2704 /* increment n to account for length field */
2708 /* Free allocated memory */
2709 BN_CTX_free(bn_ctx);
2710 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2711 if (clnt_ecdh != NULL)
2712 EC_KEY_free(clnt_ecdh);
2713 EVP_PKEY_free(srvr_pub_pkey);
2715 #endif /* !OPENSSL_NO_ECDH */
2716 else if (alg_k & SSL_kGOST)
2718 /* GOST key exchange message creation */
2719 EVP_PKEY_CTX *pkey_ctx;
2722 unsigned int md_len;
2724 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2725 EVP_MD_CTX *ukm_hash;
2728 /* Get server sertificate PKEY and create ctx from it */
2729 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2731 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2733 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2737 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2738 /* If we have send a certificate, and certificate key
2740 * parameters match those of server certificate, use
2741 * certificate key for key exchange
2744 /* Otherwise, generate ephemeral key pair */
2746 EVP_PKEY_encrypt_init(pkey_ctx);
2747 /* Generate session key */
2748 RAND_bytes(premaster_secret,32);
2749 /* If we have client certificate, use its secret as peer key */
2750 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2751 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2752 /* If there was an error - just ignore it. Ephemeral key
2758 /* Compute shared IV and store it in algorithm-specific
2760 ukm_hash = EVP_MD_CTX_create();
2761 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2762 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2763 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2764 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2765 EVP_MD_CTX_destroy(ukm_hash);
2766 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2768 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2772 /* Make GOST keytransport blob message */
2773 /*Encapsulate it into sequence */
2774 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2776 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2777 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2784 *(p++)= msglen & 0xff;
2789 *(p++)= msglen & 0xff;
2792 memcpy(p, tmp, msglen);
2793 /* Check if pubkey from client certificate was used */
2794 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2796 /* Set flag "skip certificate verify" */
2797 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2799 EVP_PKEY_CTX_free(pkey_ctx);
2800 s->session->master_key_length=
2801 s->method->ssl3_enc->generate_master_secret(s,
2802 s->session->master_key,premaster_secret,32);
2803 EVP_PKEY_free(pub_key);
2806 #ifndef OPENSSL_NO_SRP
2807 else if (alg_k & SSL_kSRP)
2809 if (s->srp_ctx.A != NULL)
2811 /* send off the data */
2812 n=BN_num_bytes(s->srp_ctx.A);
2814 BN_bn2bin(s->srp_ctx.A,p);
2819 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2822 if (s->session->srp_username != NULL)
2823 OPENSSL_free(s->session->srp_username);
2824 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2825 if (s->session->srp_username == NULL)
2827 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2828 ERR_R_MALLOC_FAILURE);
2832 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2834 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2839 #ifndef OPENSSL_NO_PSK
2840 else if (alg_k & SSL_kPSK)
2842 char identity[PSK_MAX_IDENTITY_LEN];
2843 unsigned char *t = NULL;
2844 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2845 unsigned int pre_ms_len = 0, psk_len = 0;
2849 if (s->psk_client_callback == NULL)
2851 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2852 SSL_R_PSK_NO_CLIENT_CB);
2856 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2857 identity, PSK_MAX_IDENTITY_LEN,
2858 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2859 if (psk_len > PSK_MAX_PSK_LEN)
2861 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2862 ERR_R_INTERNAL_ERROR);
2865 else if (psk_len == 0)
2867 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2868 SSL_R_PSK_IDENTITY_NOT_FOUND);
2872 /* create PSK pre_master_secret */
2873 pre_ms_len = 2+psk_len+2+psk_len;
2875 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2877 memset(t, 0, psk_len);
2881 if (s->session->psk_identity_hint != NULL)
2882 OPENSSL_free(s->session->psk_identity_hint);
2883 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2884 if (s->ctx->psk_identity_hint != NULL &&
2885 s->session->psk_identity_hint == NULL)
2887 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2888 ERR_R_MALLOC_FAILURE);
2892 if (s->session->psk_identity != NULL)
2893 OPENSSL_free(s->session->psk_identity);
2894 s->session->psk_identity = BUF_strdup(identity);
2895 if (s->session->psk_identity == NULL)
2897 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2898 ERR_R_MALLOC_FAILURE);
2902 s->session->master_key_length =
2903 s->method->ssl3_enc->generate_master_secret(s,
2904 s->session->master_key,
2905 psk_or_pre_ms, pre_ms_len);
2906 n = strlen(identity);
2908 memcpy(p, identity, n);
2912 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2913 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2916 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2923 ssl3_send_alert(s, SSL3_AL_FATAL,
2924 SSL_AD_HANDSHAKE_FAILURE);
2925 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2926 ERR_R_INTERNAL_ERROR);
2930 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2933 s->state=SSL3_ST_CW_KEY_EXCH_B;
2934 /* number of bytes to write */
2939 /* SSL3_ST_CW_KEY_EXCH_B */
2940 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2942 #ifndef OPENSSL_NO_ECDH
2943 BN_CTX_free(bn_ctx);
2944 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2945 if (clnt_ecdh != NULL)
2946 EC_KEY_free(clnt_ecdh);
2947 EVP_PKEY_free(srvr_pub_pkey);
2952 int ssl3_send_client_verify(SSL *s)
2954 unsigned char *p,*d;
2955 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2957 EVP_PKEY_CTX *pctx=NULL;
2963 EVP_MD_CTX_init(&mctx);
2965 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2967 d=(unsigned char *)s->init_buf->data;
2969 pkey=s->cert->key->privatekey;
2970 /* Create context from key and test if sha1 is allowed as digest */
2971 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2972 EVP_PKEY_sign_init(pctx);
2973 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2975 if (TLS1_get_version(s) < TLS1_2_VERSION)
2976 s->method->ssl3_enc->cert_verify_mac(s,
2978 &(data[MD5_DIGEST_LENGTH]));
2984 /* For TLS v1.2 send signature algorithm and signature
2985 * using agreed digest and cached handshake records.
2987 if (TLS1_get_version(s) >= TLS1_2_VERSION)
2991 const EVP_MD *md = s->cert->key->digest;
2992 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
2994 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
2996 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2997 ERR_R_INTERNAL_ERROR);
3002 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
3005 if (!EVP_SignInit_ex(&mctx, md, NULL)
3006 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
3007 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
3009 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3015 if (!ssl3_digest_cached_records(s))
3019 #ifndef OPENSSL_NO_RSA
3020 if (pkey->type == EVP_PKEY_RSA)
3022 s->method->ssl3_enc->cert_verify_mac(s,
3025 if (RSA_sign(NID_md5_sha1, data,
3026 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
3027 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
3029 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
3037 #ifndef OPENSSL_NO_DSA
3038 if (pkey->type == EVP_PKEY_DSA)
3040 if (!DSA_sign(pkey->save_type,
3041 &(data[MD5_DIGEST_LENGTH]),
3042 SHA_DIGEST_LENGTH,&(p[2]),
3043 (unsigned int *)&j,pkey->pkey.dsa))
3045 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
3053 #ifndef OPENSSL_NO_ECDSA
3054 if (pkey->type == EVP_PKEY_EC)
3056 if (!ECDSA_sign(pkey->save_type,
3057 &(data[MD5_DIGEST_LENGTH]),
3058 SHA_DIGEST_LENGTH,&(p[2]),
3059 (unsigned int *)&j,pkey->pkey.ec))
3061 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3070 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
3072 unsigned char signbuf[64];
3075 s->method->ssl3_enc->cert_verify_mac(s,
3076 NID_id_GostR3411_94,
3078 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
3079 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3080 ERR_R_INTERNAL_ERROR);
3083 for (i=63,j=0; i>=0; j++, i--) {
3091 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
3094 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
3097 s->state=SSL3_ST_CW_CERT_VRFY_B;
3098 s->init_num=(int)n+4;
3101 EVP_MD_CTX_cleanup(&mctx);
3102 EVP_PKEY_CTX_free(pctx);
3103 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3105 EVP_MD_CTX_cleanup(&mctx);
3106 EVP_PKEY_CTX_free(pctx);
3110 /* Check a certificate can be used for client authentication. Currently
3111 * just check cert exists and if static DH client certificates can be used.
3113 static int ssl3_check_client_certificate(SSL *s)
3115 unsigned long alg_k;
3116 if (!s->cert || !s->cert->key->x509 || !s->cert->key->privatekey)
3118 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3119 /* See if we can use client certificate for fixed DH */
3120 if (alg_k & (SSL_kDHr|SSL_kDHd))
3122 SESS_CERT *scert = s->session->sess_cert;
3123 int i = scert->peer_cert_type;
3124 EVP_PKEY *clkey = NULL, *spkey = NULL;
3125 clkey = s->cert->key->privatekey;
3126 /* If client key not DH assume it can be used */
3127 if (EVP_PKEY_id(clkey) != EVP_PKEY_DH)
3130 spkey = X509_get_pubkey(scert->peer_pkeys[i].x509);
3133 /* Compare server and client parameters */
3134 i = EVP_PKEY_cmp_parameters(clkey, spkey);
3135 EVP_PKEY_free(spkey);
3139 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
3144 int ssl3_send_client_certificate(SSL *s)
3147 EVP_PKEY *pkey=NULL;
3151 if (s->state == SSL3_ST_CW_CERT_A)
3153 if (ssl3_check_client_certificate(s))
3154 s->state=SSL3_ST_CW_CERT_C;
3156 s->state=SSL3_ST_CW_CERT_B;
3159 /* We need to get a client cert */
3160 if (s->state == SSL3_ST_CW_CERT_B)
3162 /* If we get an error, we need to
3163 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3164 * We then get retied later */
3166 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3169 s->rwstate=SSL_X509_LOOKUP;
3172 s->rwstate=SSL_NOTHING;
3173 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3175 s->state=SSL3_ST_CW_CERT_B;
3176 if ( !SSL_use_certificate(s,x509) ||
3177 !SSL_use_PrivateKey(s,pkey))
3183 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3186 if (x509 != NULL) X509_free(x509);
3187 if (pkey != NULL) EVP_PKEY_free(pkey);
3188 if (i && !ssl3_check_client_certificate(s))
3192 if (s->version == SSL3_VERSION)
3194 s->s3->tmp.cert_req=0;
3195 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3200 s->s3->tmp.cert_req=2;
3204 /* Ok, we have a cert */
3205 s->state=SSL3_ST_CW_CERT_C;
3208 if (s->state == SSL3_ST_CW_CERT_C)
3210 s->state=SSL3_ST_CW_CERT_D;
3211 l=ssl3_output_cert_chain(s,
3212 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key);
3216 /* SSL3_ST_CW_CERT_D */
3217 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3220 #define has_bits(i,m) (((i)&(m)) == (m))
3222 int ssl3_check_cert_and_algorithm(SSL *s)
3226 EVP_PKEY *pkey=NULL;
3228 #ifndef OPENSSL_NO_RSA
3231 #ifndef OPENSSL_NO_DH
3235 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3236 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3238 /* we don't have a certificate */
3239 if ((alg_a & (SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3242 sc=s->session->sess_cert;
3245 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3249 #ifndef OPENSSL_NO_RSA
3250 rsa=s->session->sess_cert->peer_rsa_tmp;
3252 #ifndef OPENSSL_NO_DH
3253 dh=s->session->sess_cert->peer_dh_tmp;
3256 /* This is the passed certificate */
3258 idx=sc->peer_cert_type;
3259 #ifndef OPENSSL_NO_ECDH
3260 if (idx == SSL_PKEY_ECC)
3262 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3264 { /* check failed */
3265 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3274 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3275 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3276 EVP_PKEY_free(pkey);
3279 /* Check that we have a certificate if we require one */
3280 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3282 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3285 #ifndef OPENSSL_NO_DSA
3286 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3288 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3292 #ifndef OPENSSL_NO_RSA
3293 if ((alg_k & SSL_kRSA) &&
3294 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3296 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3300 #ifndef OPENSSL_NO_DH
3301 if ((alg_k & SSL_kEDH) &&
3302 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3304 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3307 else if ((alg_k & SSL_kDHr) && (TLS1_get_version(s) < TLS1_2_VERSION) &&
3308 !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3310 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3313 #ifndef OPENSSL_NO_DSA
3314 else if ((alg_k & SSL_kDHd) && (TLS1_get_version(s) < TLS1_2_VERSION) &&
3315 !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3317 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3323 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3325 #ifndef OPENSSL_NO_RSA
3326 if (alg_k & SSL_kRSA)
3329 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3331 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3337 #ifndef OPENSSL_NO_DH
3338 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3341 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3343 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3350 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3356 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3361 /* Check to see if handshake is full or resumed. Usually this is just a
3362 * case of checking to see if a cache hit has occurred. In the case of
3363 * session tickets we have to check the next message to be sure.
3366 #ifndef OPENSSL_NO_TLSEXT
3367 # ifndef OPENSSL_NO_NEXTPROTONEG
3368 int ssl3_send_next_proto(SSL *s)
3370 unsigned int len, padding_len;
3373 if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
3375 len = s->next_proto_negotiated_len;
3376 padding_len = 32 - ((len + 2) % 32);
3377 d = (unsigned char *)s->init_buf->data;
3379 memcpy(d + 5, s->next_proto_negotiated, len);
3380 d[5 + len] = padding_len;
3381 memset(d + 6 + len, 0, padding_len);
3382 *(d++)=SSL3_MT_NEXT_PROTO;
3383 l2n3(2 + len + padding_len, d);
3384 s->state = SSL3_ST_CW_NEXT_PROTO_B;
3385 s->init_num = 4 + 2 + len + padding_len;
3389 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3393 int ssl3_check_finished(SSL *s)
3397 /* If we have no ticket it cannot be a resumed session. */
3398 if (!s->session->tlsext_tick)
3400 /* this function is called when we really expect a Certificate
3401 * message, so permit appropriate message length */
3402 n=s->method->ssl_get_message(s,
3408 if (!ok) return((int)n);
3409 s->s3->tmp.reuse_message = 1;
3410 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3411 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3418 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3421 #ifndef OPENSSL_NO_ENGINE
3422 if (s->ctx->client_cert_engine)
3424 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3425 SSL_get_client_CA_list(s),
3426 px509, ppkey, NULL, NULL, NULL);
3431 if (s->ctx->client_cert_cb)
3432 i = s->ctx->client_cert_cb(s,px509,ppkey);