2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
114 * Portions of the attached software ("Contribution") are developed by
115 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
117 * The Contribution is licensed pursuant to the OpenSSL open source
118 * license provided above.
120 * ECC cipher suite support in OpenSSL originally written by
121 * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
124 /* ====================================================================
125 * Copyright 2005 Nokia. All rights reserved.
127 * The portions of the attached software ("Contribution") is developed by
128 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
131 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
132 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
133 * support (see RFC 4279) to OpenSSL.
135 * No patent licenses or other rights except those expressly stated in
136 * the OpenSSL open source license shall be deemed granted or received
137 * expressly, by implication, estoppel, or otherwise.
139 * No assurances are provided by Nokia that the Contribution does not
140 * infringe the patent or other intellectual property rights of any third
141 * party or that the license provides you with all the necessary rights
142 * to make use of the Contribution.
144 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
145 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
146 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
147 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
152 #include "ssl_locl.h"
153 #include "kssl_lcl.h"
154 #include <openssl/buffer.h>
155 #include <openssl/rand.h>
156 #include <openssl/objects.h>
157 #include <openssl/evp.h>
158 #include <openssl/md5.h>
160 #include <openssl/fips.h>
162 #ifndef OPENSSL_NO_DH
163 #include <openssl/dh.h>
165 #include <openssl/bn.h>
166 #ifndef OPENSSL_NO_ENGINE
167 #include <openssl/engine.h>
170 static const SSL_METHOD *ssl3_get_client_method(int ver);
171 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
173 static const SSL_METHOD *ssl3_get_client_method(int ver)
175 if (ver == SSL3_VERSION)
176 return(SSLv3_client_method());
181 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
182 ssl_undefined_function,
184 ssl3_get_client_method)
186 int ssl3_connect(SSL *s)
189 unsigned long Time=(unsigned long)time(NULL);
190 void (*cb)(const SSL *ssl,int type,int val)=NULL;
192 int new_state,state,skip=0;
194 RAND_add(&Time,sizeof(Time),0);
198 if (s->info_callback != NULL)
200 else if (s->ctx->info_callback != NULL)
201 cb=s->ctx->info_callback;
204 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
206 #ifndef OPENSSL_NO_HEARTBEATS
207 /* If we're awaiting a HeartbeatResponse, pretend we
208 * already got and don't await it anymore, because
209 * Heartbeats don't make sense during handshakes anyway.
211 if (s->tlsext_hb_pending)
213 s->tlsext_hb_pending = 0;
224 case SSL_ST_RENEGOTIATE:
226 s->state=SSL_ST_CONNECT;
227 s->ctx->stats.sess_connect_renegotiate++;
231 case SSL_ST_BEFORE|SSL_ST_CONNECT:
232 case SSL_ST_OK|SSL_ST_CONNECT:
235 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
237 if ((s->version & 0xff00 ) != 0x0300)
239 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
244 /* s->version=SSL3_VERSION; */
245 s->type=SSL_ST_CONNECT;
247 if (s->init_buf == NULL)
249 if ((buf=BUF_MEM_new()) == NULL)
254 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
263 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
265 /* setup buffing BIO */
266 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
268 /* don't push the buffering BIO quite yet */
270 ssl3_init_finished_mac(s);
272 s->state=SSL3_ST_CW_CLNT_HELLO_A;
273 s->ctx->stats.sess_connect++;
277 case SSL3_ST_CW_CLNT_HELLO_A:
278 case SSL3_ST_CW_CLNT_HELLO_B:
281 ret=ssl3_client_hello(s);
282 if (ret <= 0) goto end;
283 s->state=SSL3_ST_CR_SRVR_HELLO_A;
286 /* turn on buffering for the next lot of output */
287 if (s->bbio != s->wbio)
288 s->wbio=BIO_push(s->bbio,s->wbio);
292 case SSL3_ST_CR_SRVR_HELLO_A:
293 case SSL3_ST_CR_SRVR_HELLO_B:
294 ret=ssl3_get_server_hello(s);
295 if (ret <= 0) goto end;
299 s->state=SSL3_ST_CR_FINISHED_A;
300 #ifndef OPENSSL_NO_TLSEXT
301 if (s->tlsext_ticket_expected)
303 /* receive renewed session ticket */
304 s->state=SSL3_ST_CR_SESSION_TICKET_A;
309 s->state=SSL3_ST_CR_CERT_A;
313 case SSL3_ST_CR_CERT_A:
314 case SSL3_ST_CR_CERT_B:
315 #ifndef OPENSSL_NO_TLSEXT
316 ret=ssl3_check_finished(s);
317 if (ret <= 0) goto end;
321 if (s->tlsext_ticket_expected)
322 s->state=SSL3_ST_CR_SESSION_TICKET_A;
324 s->state=SSL3_ST_CR_FINISHED_A;
329 /* Check if it is anon DH/ECDH */
331 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
332 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
334 ret=ssl3_get_server_certificate(s);
335 if (ret <= 0) goto end;
336 #ifndef OPENSSL_NO_TLSEXT
337 if (s->tlsext_status_expected)
338 s->state=SSL3_ST_CR_CERT_STATUS_A;
340 s->state=SSL3_ST_CR_KEY_EXCH_A;
345 s->state=SSL3_ST_CR_KEY_EXCH_A;
352 s->state=SSL3_ST_CR_KEY_EXCH_A;
357 case SSL3_ST_CR_KEY_EXCH_A:
358 case SSL3_ST_CR_KEY_EXCH_B:
359 ret=ssl3_get_key_exchange(s);
360 if (ret <= 0) goto end;
361 s->state=SSL3_ST_CR_CERT_REQ_A;
364 /* at this point we check that we have the
365 * required stuff from the server */
366 if (!ssl3_check_cert_and_algorithm(s))
373 case SSL3_ST_CR_CERT_REQ_A:
374 case SSL3_ST_CR_CERT_REQ_B:
375 ret=ssl3_get_certificate_request(s);
376 if (ret <= 0) goto end;
377 s->state=SSL3_ST_CR_SRVR_DONE_A;
381 case SSL3_ST_CR_SRVR_DONE_A:
382 case SSL3_ST_CR_SRVR_DONE_B:
383 ret=ssl3_get_server_done(s);
384 if (ret <= 0) goto end;
385 #ifndef OPENSSL_NO_SRP
386 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP)
388 if ((ret = SRP_Calc_A_param(s))<=0)
390 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SRP_A_CALC);
391 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
396 if (s->s3->tmp.cert_req)
397 s->state=SSL3_ST_CW_CERT_A;
399 s->state=SSL3_ST_CW_KEY_EXCH_A;
404 case SSL3_ST_CW_CERT_A:
405 case SSL3_ST_CW_CERT_B:
406 case SSL3_ST_CW_CERT_C:
407 case SSL3_ST_CW_CERT_D:
408 ret=ssl3_send_client_certificate(s);
409 if (ret <= 0) goto end;
410 s->state=SSL3_ST_CW_KEY_EXCH_A;
414 case SSL3_ST_CW_KEY_EXCH_A:
415 case SSL3_ST_CW_KEY_EXCH_B:
416 ret=ssl3_send_client_key_exchange(s);
417 if (ret <= 0) goto end;
418 /* EAY EAY EAY need to check for DH fix cert
420 /* For TLS, cert_req is set to 2, so a cert chain
421 * of nothing is sent, but no verify packet is sent */
422 /* XXX: For now, we do not support client
423 * authentication in ECDH cipher suites with
424 * ECDH (rather than ECDSA) certificates.
425 * We need to skip the certificate verify
426 * message when client's ECDH public key is sent
427 * inside the client certificate.
429 if (s->s3->tmp.cert_req == 1)
431 s->state=SSL3_ST_CW_CERT_VRFY_A;
435 s->state=SSL3_ST_CW_CHANGE_A;
436 s->s3->change_cipher_spec=0;
438 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
440 s->state=SSL3_ST_CW_CHANGE_A;
441 s->s3->change_cipher_spec=0;
447 case SSL3_ST_CW_CERT_VRFY_A:
448 case SSL3_ST_CW_CERT_VRFY_B:
449 ret=ssl3_send_client_verify(s);
450 if (ret <= 0) goto end;
451 s->state=SSL3_ST_CW_CHANGE_A;
453 s->s3->change_cipher_spec=0;
456 case SSL3_ST_CW_CHANGE_A:
457 case SSL3_ST_CW_CHANGE_B:
458 ret=ssl3_send_change_cipher_spec(s,
459 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
460 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);
762 #ifdef OPENSSL_NO_COMP
766 if ((s->options & SSL_OP_NO_COMPRESSION)
767 || !s->ctx->comp_methods)
770 j=sk_SSL_COMP_num(s->ctx->comp_methods);
774 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
778 *(p++)=0; /* Add the NULL method */
780 #ifndef OPENSSL_NO_TLSEXT
782 if (ssl_prepare_clienthello_tlsext(s) <= 0)
784 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
787 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
789 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
796 *(d++)=SSL3_MT_CLIENT_HELLO;
799 s->state=SSL3_ST_CW_CLNT_HELLO_B;
800 /* number of bytes to write */
805 /* SSL3_ST_CW_CLNT_HELLO_B */
806 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
811 int ssl3_get_server_hello(SSL *s)
813 STACK_OF(SSL_CIPHER) *sk;
819 #ifndef OPENSSL_NO_COMP
823 n=s->method->ssl_get_message(s,
824 SSL3_ST_CR_SRVR_HELLO_A,
825 SSL3_ST_CR_SRVR_HELLO_B,
830 if (!ok) return((int)n);
832 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
834 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
836 if ( s->d1->send_cookie == 0)
838 s->s3->tmp.reuse_message = 1;
841 else /* already sent a cookie */
843 al=SSL_AD_UNEXPECTED_MESSAGE;
844 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
850 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
852 al=SSL_AD_UNEXPECTED_MESSAGE;
853 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
857 d=p=(unsigned char *)s->init_msg;
859 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
861 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
862 s->version=(s->version&0xff00)|p[1];
863 al=SSL_AD_PROTOCOL_VERSION;
868 /* load the server hello data */
869 /* load the server random */
870 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
873 /* get the session-id */
876 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
878 al=SSL_AD_ILLEGAL_PARAMETER;
879 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
883 #ifndef OPENSSL_NO_TLSEXT
884 /* check if we want to resume the session based on external pre-shared secret */
885 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
887 SSL_CIPHER *pref_cipher=NULL;
888 s->session->master_key_length=sizeof(s->session->master_key);
889 if (s->tls_session_secret_cb(s, s->session->master_key,
890 &s->session->master_key_length,
892 s->tls_session_secret_cb_arg))
894 s->session->cipher = pref_cipher ?
895 pref_cipher : ssl_get_cipher_by_char(s, p+j);
898 #endif /* OPENSSL_NO_TLSEXT */
900 if (j != 0 && j == s->session->session_id_length
901 && memcmp(p,s->session->session_id,j) == 0)
903 if(s->sid_ctx_length != s->session->sid_ctx_length
904 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
906 /* actually a client application bug */
907 al=SSL_AD_ILLEGAL_PARAMETER;
908 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
913 else /* a miss or crap from the other end */
915 /* If we were trying for session-id reuse, make a new
916 * SSL_SESSION so we don't stuff up other people */
918 if (s->session->session_id_length > 0)
920 if (!ssl_get_new_session(s,0))
922 al=SSL_AD_INTERNAL_ERROR;
926 s->session->session_id_length=j;
927 memcpy(s->session->session_id,p,j); /* j could be 0 */
930 c=ssl_get_cipher_by_char(s,p);
934 al=SSL_AD_ILLEGAL_PARAMETER;
935 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
938 /* TLS v1.2 only ciphersuites require v1.2 or later */
939 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
940 (TLS1_get_version(s) < TLS1_2_VERSION))
942 al=SSL_AD_ILLEGAL_PARAMETER;
943 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
946 p+=ssl_put_cipher_by_char(s,NULL,NULL);
948 sk=ssl_get_ciphers_by_id(s);
949 i=sk_SSL_CIPHER_find(sk,c);
952 /* we did not say we would use this cipher */
953 al=SSL_AD_ILLEGAL_PARAMETER;
954 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
958 /* Depending on the session caching (internal/external), the cipher
959 and/or cipher_id values may not be set. Make sure that
960 cipher_id is set and use it for comparison. */
961 if (s->session->cipher)
962 s->session->cipher_id = s->session->cipher->id;
963 if (s->hit && (s->session->cipher_id != c->id))
965 /* Workaround is now obsolete */
968 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
971 al=SSL_AD_ILLEGAL_PARAMETER;
972 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
976 s->s3->tmp.new_cipher=c;
977 /* Don't digest cached records if TLS v1.2: we may need them for
978 * client authentication.
980 if (TLS1_get_version(s) < TLS1_2_VERSION && !ssl3_digest_cached_records(s))
982 /* lets get the compression algorithm */
984 #ifdef OPENSSL_NO_COMP
987 al=SSL_AD_ILLEGAL_PARAMETER;
988 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
991 /* If compression is disabled we'd better not try to resume a session
994 if (s->session->compress_meth != 0)
996 al=SSL_AD_INTERNAL_ERROR;
997 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
1002 if (s->hit && j != s->session->compress_meth)
1004 al=SSL_AD_ILLEGAL_PARAMETER;
1005 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
1010 else if (s->options & SSL_OP_NO_COMPRESSION)
1012 al=SSL_AD_ILLEGAL_PARAMETER;
1013 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
1017 comp=ssl3_comp_find(s->ctx->comp_methods,j);
1019 if ((j != 0) && (comp == NULL))
1021 al=SSL_AD_ILLEGAL_PARAMETER;
1022 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
1027 s->s3->tmp.new_compression=comp;
1031 #ifndef OPENSSL_NO_TLSEXT
1033 if (s->version >= SSL3_VERSION)
1035 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
1037 /* 'al' set by ssl_parse_serverhello_tlsext */
1038 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
1041 if (ssl_check_serverhello_tlsext(s) <= 0)
1043 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
1051 /* wrong packet length */
1052 al=SSL_AD_DECODE_ERROR;
1053 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
1059 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1064 int ssl3_get_server_certificate(SSL *s)
1066 int al,i,ok,ret= -1;
1067 unsigned long n,nc,llen,l;
1069 const unsigned char *q,*p;
1071 STACK_OF(X509) *sk=NULL;
1073 EVP_PKEY *pkey=NULL;
1074 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1076 n=s->method->ssl_get_message(s,
1083 if (!ok) return((int)n);
1085 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1086 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1087 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1089 s->s3->tmp.reuse_message=1;
1093 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1095 al=SSL_AD_UNEXPECTED_MESSAGE;
1096 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1099 p=d=(unsigned char *)s->init_msg;
1101 if ((sk=sk_X509_new_null()) == NULL)
1103 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1110 al=SSL_AD_DECODE_ERROR;
1111 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1114 for (nc=0; nc<llen; )
1117 if ((l+nc+3) > llen)
1119 al=SSL_AD_DECODE_ERROR;
1120 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1125 x=d2i_X509(NULL,&q,l);
1128 al=SSL_AD_BAD_CERTIFICATE;
1129 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1134 al=SSL_AD_DECODE_ERROR;
1135 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1138 if (!sk_X509_push(sk,x))
1140 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1148 i=ssl_verify_cert_chain(s,sk);
1149 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1150 #ifndef OPENSSL_NO_KRB5
1151 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1152 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1153 #endif /* OPENSSL_NO_KRB5 */
1156 al=ssl_verify_alarm_type(s->verify_result);
1157 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1160 ERR_clear_error(); /* but we keep s->verify_result */
1162 sc=ssl_sess_cert_new();
1163 if (sc == NULL) goto err;
1165 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1166 s->session->sess_cert=sc;
1169 /* Inconsistency alert: cert_chain does include the peer's
1170 * certificate, which we don't include in s3_srvr.c */
1171 x=sk_X509_value(sk,0);
1173 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1175 pkey=X509_get_pubkey(x);
1177 /* VRS: allow null cert if auth == KRB5 */
1178 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1179 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1183 printf("pkey,x = %p, %p\n", pkey,x);
1184 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1185 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1186 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1187 #endif /* KSSL_DEBUG */
1189 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1193 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1194 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1198 i=ssl_cert_type(x,pkey);
1199 if (need_cert && i < 0)
1203 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1204 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1210 sc->peer_cert_type=i;
1211 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1212 /* Why would the following ever happen?
1213 * We just created sc a couple of lines ago. */
1214 if (sc->peer_pkeys[i].x509 != NULL)
1215 X509_free(sc->peer_pkeys[i].x509);
1216 sc->peer_pkeys[i].x509=x;
1217 sc->peer_key= &(sc->peer_pkeys[i]);
1219 if (s->session->peer != NULL)
1220 X509_free(s->session->peer);
1221 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1226 sc->peer_cert_type=i;
1229 if (s->session->peer != NULL)
1230 X509_free(s->session->peer);
1231 s->session->peer=NULL;
1233 s->session->verify_result = s->verify_result;
1241 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1244 EVP_PKEY_free(pkey);
1246 sk_X509_pop_free(sk,X509_free);
1250 int ssl3_get_key_exchange(SSL *s)
1252 #ifndef OPENSSL_NO_RSA
1253 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1256 unsigned char *param,*p;
1257 int al,i,j,param_len,ok;
1259 EVP_PKEY *pkey=NULL;
1260 const EVP_MD *md = NULL;
1261 #ifndef OPENSSL_NO_RSA
1264 #ifndef OPENSSL_NO_DH
1267 #ifndef OPENSSL_NO_ECDH
1268 EC_KEY *ecdh = NULL;
1269 BN_CTX *bn_ctx = NULL;
1270 EC_POINT *srvr_ecpoint = NULL;
1272 int encoded_pt_len = 0;
1275 /* use same message size as in ssl3_get_certificate_request()
1276 * as ServerKeyExchange message may be skipped */
1277 n=s->method->ssl_get_message(s,
1278 SSL3_ST_CR_KEY_EXCH_A,
1279 SSL3_ST_CR_KEY_EXCH_B,
1283 if (!ok) return((int)n);
1285 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1287 #ifndef OPENSSL_NO_PSK
1288 /* In plain PSK ciphersuite, ServerKeyExchange can be
1289 omitted if no identity hint is sent. Set
1290 session->sess_cert anyway to avoid problems
1292 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1294 s->session->sess_cert=ssl_sess_cert_new();
1295 if (s->ctx->psk_identity_hint)
1296 OPENSSL_free(s->ctx->psk_identity_hint);
1297 s->ctx->psk_identity_hint = NULL;
1300 s->s3->tmp.reuse_message=1;
1304 param=p=(unsigned char *)s->init_msg;
1305 if (s->session->sess_cert != NULL)
1307 #ifndef OPENSSL_NO_RSA
1308 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1310 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1311 s->session->sess_cert->peer_rsa_tmp=NULL;
1314 #ifndef OPENSSL_NO_DH
1315 if (s->session->sess_cert->peer_dh_tmp)
1317 DH_free(s->session->sess_cert->peer_dh_tmp);
1318 s->session->sess_cert->peer_dh_tmp=NULL;
1321 #ifndef OPENSSL_NO_ECDH
1322 if (s->session->sess_cert->peer_ecdh_tmp)
1324 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1325 s->session->sess_cert->peer_ecdh_tmp=NULL;
1331 s->session->sess_cert=ssl_sess_cert_new();
1335 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1336 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1337 EVP_MD_CTX_init(&md_ctx);
1339 #ifndef OPENSSL_NO_PSK
1340 if (alg_k & SSL_kPSK)
1342 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1344 al=SSL_AD_HANDSHAKE_FAILURE;
1347 /* Store PSK identity hint for later use, hint is used
1348 * in ssl3_send_client_key_exchange. Assume that the
1349 * maximum length of a PSK identity hint can be as
1350 * long as the maximum length of a PSK identity. */
1351 if (i > PSK_MAX_IDENTITY_LEN)
1353 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1354 SSL_R_DATA_LENGTH_TOO_LONG);
1359 al=SSL_AD_DECODE_ERROR;
1360 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1361 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1364 /* If received PSK identity hint contains NULL
1365 * characters, the hint is truncated from the first
1366 * NULL. p may not be ending with NULL, so create a
1367 * NULL-terminated string. */
1368 memcpy(tmp_id_hint, p, i);
1369 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1370 if (s->ctx->psk_identity_hint != NULL)
1371 OPENSSL_free(s->ctx->psk_identity_hint);
1372 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1373 if (s->ctx->psk_identity_hint == NULL)
1375 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1383 #endif /* !OPENSSL_NO_PSK */
1384 #ifndef OPENSSL_NO_SRP
1385 if (alg_k & SSL_kSRP)
1391 al=SSL_AD_DECODE_ERROR;
1392 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1395 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1397 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1406 al=SSL_AD_DECODE_ERROR;
1407 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1410 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1412 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1417 i = (unsigned int)(p[0]);
1422 al=SSL_AD_DECODE_ERROR;
1423 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1426 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1428 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1437 al=SSL_AD_DECODE_ERROR;
1438 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1441 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1443 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1449 /* We must check if there is a certificate */
1450 #ifndef OPENSSL_NO_RSA
1451 if (alg_a & SSL_aRSA)
1452 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1457 #ifndef OPENSSL_NO_DSA
1458 else if (alg_a & SSL_aDSS)
1459 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1463 #endif /* !OPENSSL_NO_SRP */
1464 #ifndef OPENSSL_NO_RSA
1465 if (alg_k & SSL_kRSA)
1467 if ((rsa=RSA_new()) == NULL)
1469 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1476 al=SSL_AD_DECODE_ERROR;
1477 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1480 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1482 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1491 al=SSL_AD_DECODE_ERROR;
1492 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1495 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1497 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1503 /* this should be because we are using an export cipher */
1504 if (alg_a & SSL_aRSA)
1505 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1508 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1511 s->session->sess_cert->peer_rsa_tmp=rsa;
1514 #else /* OPENSSL_NO_RSA */
1518 #ifndef OPENSSL_NO_DH
1519 else if (alg_k & SSL_kEDH)
1521 if ((dh=DH_new()) == NULL)
1523 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1530 al=SSL_AD_DECODE_ERROR;
1531 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1534 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1536 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1545 al=SSL_AD_DECODE_ERROR;
1546 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1549 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1551 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1560 al=SSL_AD_DECODE_ERROR;
1561 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1564 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1566 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1572 #ifndef OPENSSL_NO_RSA
1573 if (alg_a & SSL_aRSA)
1574 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1579 #ifndef OPENSSL_NO_DSA
1580 else if (alg_a & SSL_aDSS)
1581 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1583 /* else anonymous DH, so no certificate or pkey. */
1585 s->session->sess_cert->peer_dh_tmp=dh;
1588 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1590 al=SSL_AD_ILLEGAL_PARAMETER;
1591 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1594 #endif /* !OPENSSL_NO_DH */
1596 #ifndef OPENSSL_NO_ECDH
1597 else if (alg_k & SSL_kEECDH)
1600 const EC_GROUP *group;
1602 if ((ecdh=EC_KEY_new()) == NULL)
1604 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1608 /* Extract elliptic curve parameters and the
1609 * server's ephemeral ECDH public key.
1610 * Keep accumulating lengths of various components in
1611 * param_len and make sure it never exceeds n.
1614 /* XXX: For now we only support named (not generic) curves
1615 * and the ECParameters in this case is just three bytes.
1618 if ((param_len > n) ||
1619 (*p != NAMED_CURVE_TYPE) ||
1620 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1622 al=SSL_AD_INTERNAL_ERROR;
1623 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1627 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1630 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1633 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1635 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1638 EC_GROUP_free(ngroup);
1640 group = EC_KEY_get0_group(ecdh);
1642 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1643 (EC_GROUP_get_degree(group) > 163))
1645 al=SSL_AD_EXPORT_RESTRICTION;
1646 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1652 /* Next, get the encoded ECPoint */
1653 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1654 ((bn_ctx = BN_CTX_new()) == NULL))
1656 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1660 encoded_pt_len = *p; /* length of encoded point */
1662 param_len += (1 + encoded_pt_len);
1663 if ((param_len > n) ||
1664 (EC_POINT_oct2point(group, srvr_ecpoint,
1665 p, encoded_pt_len, bn_ctx) == 0))
1667 al=SSL_AD_DECODE_ERROR;
1668 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1675 /* The ECC/TLS specification does not mention
1676 * the use of DSA to sign ECParameters in the server
1677 * key exchange message. We do support RSA and ECDSA.
1680 #ifndef OPENSSL_NO_RSA
1681 else if (alg_a & SSL_aRSA)
1682 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1684 #ifndef OPENSSL_NO_ECDSA
1685 else if (alg_a & SSL_aECDSA)
1686 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1688 /* else anonymous ECDH, so no certificate or pkey. */
1689 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1690 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1692 BN_CTX_free(bn_ctx);
1694 EC_POINT_free(srvr_ecpoint);
1695 srvr_ecpoint = NULL;
1699 al=SSL_AD_UNEXPECTED_MESSAGE;
1700 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1703 #endif /* !OPENSSL_NO_ECDH */
1706 /* p points to the next byte, there are 'n' bytes left */
1708 /* if it was signed, check the signature */
1711 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1713 int sigalg = tls12_get_sigid(pkey);
1714 /* Should never happen */
1717 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1720 /* Check key type is consistent with signature */
1721 if (sigalg != (int)p[1])
1723 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE);
1724 al=SSL_AD_DECODE_ERROR;
1727 md = tls12_get_hash(p[0]);
1730 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
1731 al=SSL_AD_DECODE_ERROR;
1735 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1745 j=EVP_PKEY_size(pkey);
1747 if ((i != n) || (n > j) || (n <= 0))
1749 /* wrong packet length */
1750 al=SSL_AD_DECODE_ERROR;
1751 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1755 #ifndef OPENSSL_NO_RSA
1756 if (pkey->type == EVP_PKEY_RSA && TLS1_get_version(s) < TLS1_2_VERSION)
1762 for (num=2; num > 0; num--)
1764 EVP_MD_CTX_set_flags(&md_ctx,
1765 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1766 EVP_DigestInit_ex(&md_ctx,(num == 2)
1767 ?s->ctx->md5:s->ctx->sha1, NULL);
1768 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1769 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1770 EVP_DigestUpdate(&md_ctx,param,param_len);
1771 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1775 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1779 al=SSL_AD_DECRYPT_ERROR;
1780 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1786 al=SSL_AD_DECRYPT_ERROR;
1787 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1794 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1795 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1796 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1797 EVP_VerifyUpdate(&md_ctx,param,param_len);
1798 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1801 al=SSL_AD_DECRYPT_ERROR;
1802 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1809 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1810 /* aNULL or kPSK do not need public keys */
1812 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1815 /* still data left over */
1818 al=SSL_AD_DECODE_ERROR;
1819 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1823 EVP_PKEY_free(pkey);
1824 EVP_MD_CTX_cleanup(&md_ctx);
1827 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1829 EVP_PKEY_free(pkey);
1830 #ifndef OPENSSL_NO_RSA
1834 #ifndef OPENSSL_NO_DH
1838 #ifndef OPENSSL_NO_ECDH
1839 BN_CTX_free(bn_ctx);
1840 EC_POINT_free(srvr_ecpoint);
1844 EVP_MD_CTX_cleanup(&md_ctx);
1848 int ssl3_get_certificate_request(SSL *s)
1851 unsigned long n,nc,l;
1852 unsigned int llen, ctype_num,i;
1854 const unsigned char *p,*q;
1856 STACK_OF(X509_NAME) *ca_sk=NULL;
1858 n=s->method->ssl_get_message(s,
1859 SSL3_ST_CR_CERT_REQ_A,
1860 SSL3_ST_CR_CERT_REQ_B,
1865 if (!ok) return((int)n);
1867 s->s3->tmp.cert_req=0;
1869 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1871 s->s3->tmp.reuse_message=1;
1872 /* If we get here we don't need any cached handshake records
1873 * as we wont be doing client auth.
1875 if (s->s3->handshake_buffer)
1877 if (!ssl3_digest_cached_records(s))
1883 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1885 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1886 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1890 /* TLS does not like anon-DH with client cert */
1891 if (s->version > SSL3_VERSION)
1893 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1895 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1896 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1901 p=d=(unsigned char *)s->init_msg;
1903 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1905 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1909 /* get the certificate types */
1911 if (ctype_num > SSL3_CT_NUMBER)
1912 ctype_num=SSL3_CT_NUMBER;
1913 for (i=0; i<ctype_num; i++)
1914 s->s3->tmp.ctype[i]= p[i];
1916 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1919 /* Check we have enough room for signature algorithms and
1920 * following length value.
1922 if ((unsigned long)(p - d + llen + 2) > n)
1924 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1925 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
1928 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
1930 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1931 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
1937 /* get the CA RDNs */
1942 out=fopen("/tmp/vsign.der","w");
1943 fwrite(p,1,llen,out);
1948 if ((unsigned long)(p - d + llen) != n)
1950 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1951 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1955 for (nc=0; nc<llen; )
1958 if ((l+nc+2) > llen)
1960 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1961 goto cont; /* netscape bugs */
1962 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1963 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1969 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1971 /* If netscape tolerance is on, ignore errors */
1972 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1976 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1977 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1984 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1985 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1988 if (!sk_X509_NAME_push(ca_sk,xn))
1990 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
2004 /* we should setup a certificate to return.... */
2005 s->s3->tmp.cert_req=1;
2006 s->s3->tmp.ctype_num=ctype_num;
2007 if (s->s3->tmp.ca_names != NULL)
2008 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
2009 s->s3->tmp.ca_names=ca_sk;
2014 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
2018 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
2020 return(X509_NAME_cmp(*a,*b));
2022 #ifndef OPENSSL_NO_TLSEXT
2023 int ssl3_get_new_session_ticket(SSL *s)
2025 int ok,al,ret=0, ticklen;
2027 const unsigned char *p;
2030 n=s->method->ssl_get_message(s,
2031 SSL3_ST_CR_SESSION_TICKET_A,
2032 SSL3_ST_CR_SESSION_TICKET_B,
2040 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
2042 s->s3->tmp.reuse_message=1;
2045 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
2047 al=SSL_AD_UNEXPECTED_MESSAGE;
2048 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
2053 /* need at least ticket_lifetime_hint + ticket length */
2054 al = SSL_AD_DECODE_ERROR;
2055 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2059 p=d=(unsigned char *)s->init_msg;
2060 n2l(p, s->session->tlsext_tick_lifetime_hint);
2062 /* ticket_lifetime_hint + ticket_length + ticket */
2063 if (ticklen + 6 != n)
2065 al = SSL_AD_DECODE_ERROR;
2066 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2069 if (s->session->tlsext_tick)
2071 OPENSSL_free(s->session->tlsext_tick);
2072 s->session->tlsext_ticklen = 0;
2074 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2075 if (!s->session->tlsext_tick)
2077 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2080 memcpy(s->session->tlsext_tick, p, ticklen);
2081 s->session->tlsext_ticklen = ticklen;
2082 /* There are two ways to detect a resumed ticket sesion.
2083 * One is to set an appropriate session ID and then the server
2084 * must return a match in ServerHello. This allows the normal
2085 * client session ID matching to work and we know much
2086 * earlier that the ticket has been accepted.
2088 * The other way is to set zero length session ID when the
2089 * ticket is presented and rely on the handshake to determine
2090 * session resumption.
2092 * We choose the former approach because this fits in with
2093 * assumptions elsewhere in OpenSSL. The session ID is set
2094 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2097 EVP_Digest(p, ticklen,
2098 s->session->session_id, &s->session->session_id_length,
2099 #ifndef OPENSSL_NO_SHA256
2100 EVP_sha256(), NULL);
2107 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2112 int ssl3_get_cert_status(SSL *s)
2115 unsigned long resplen,n;
2116 const unsigned char *p;
2118 n=s->method->ssl_get_message(s,
2119 SSL3_ST_CR_CERT_STATUS_A,
2120 SSL3_ST_CR_CERT_STATUS_B,
2121 SSL3_MT_CERTIFICATE_STATUS,
2125 if (!ok) return((int)n);
2128 /* need at least status type + length */
2129 al = SSL_AD_DECODE_ERROR;
2130 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2133 p = (unsigned char *)s->init_msg;
2134 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2136 al = SSL_AD_DECODE_ERROR;
2137 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2141 if (resplen + 4 != n)
2143 al = SSL_AD_DECODE_ERROR;
2144 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2147 if (s->tlsext_ocsp_resp)
2148 OPENSSL_free(s->tlsext_ocsp_resp);
2149 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2150 if (!s->tlsext_ocsp_resp)
2152 al = SSL_AD_INTERNAL_ERROR;
2153 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2156 s->tlsext_ocsp_resplen = resplen;
2157 if (s->ctx->tlsext_status_cb)
2160 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2163 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2164 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2169 al = SSL_AD_INTERNAL_ERROR;
2170 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2176 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2181 int ssl3_get_server_done(SSL *s)
2186 n=s->method->ssl_get_message(s,
2187 SSL3_ST_CR_SRVR_DONE_A,
2188 SSL3_ST_CR_SRVR_DONE_B,
2189 SSL3_MT_SERVER_DONE,
2190 30, /* should be very small, like 0 :-) */
2193 if (!ok) return((int)n);
2196 /* should contain no data */
2197 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2198 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2206 int ssl3_send_client_key_exchange(SSL *s)
2208 unsigned char *p,*d;
2210 unsigned long alg_k;
2211 #ifndef OPENSSL_NO_RSA
2213 EVP_PKEY *pkey=NULL;
2215 #ifndef OPENSSL_NO_KRB5
2217 #endif /* OPENSSL_NO_KRB5 */
2218 #ifndef OPENSSL_NO_ECDH
2219 EC_KEY *clnt_ecdh = NULL;
2220 const EC_POINT *srvr_ecpoint = NULL;
2221 EVP_PKEY *srvr_pub_pkey = NULL;
2222 unsigned char *encodedPoint = NULL;
2223 int encoded_pt_len = 0;
2224 BN_CTX * bn_ctx = NULL;
2227 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2229 d=(unsigned char *)s->init_buf->data;
2232 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2234 /* Fool emacs indentation */
2236 #ifndef OPENSSL_NO_RSA
2237 else if (alg_k & SSL_kRSA)
2240 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2242 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2243 rsa=s->session->sess_cert->peer_rsa_tmp;
2246 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2247 if ((pkey == NULL) ||
2248 (pkey->type != EVP_PKEY_RSA) ||
2249 (pkey->pkey.rsa == NULL))
2251 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2255 EVP_PKEY_free(pkey);
2258 tmp_buf[0]=s->client_version>>8;
2259 tmp_buf[1]=s->client_version&0xff;
2260 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2263 s->session->master_key_length=sizeof tmp_buf;
2266 /* Fix buf for TLS and beyond */
2267 if (s->version > SSL3_VERSION)
2269 n=RSA_public_encrypt(sizeof tmp_buf,
2270 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2272 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2273 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2277 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2281 /* Fix buf for TLS and beyond */
2282 if (s->version > SSL3_VERSION)
2288 s->session->master_key_length=
2289 s->method->ssl3_enc->generate_master_secret(s,
2290 s->session->master_key,
2291 tmp_buf,sizeof tmp_buf);
2292 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2295 #ifndef OPENSSL_NO_KRB5
2296 else if (alg_k & SSL_kKRB5)
2298 krb5_error_code krb5rc;
2299 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2300 /* krb5_data krb5_ap_req; */
2301 krb5_data *enc_ticket;
2302 krb5_data authenticator, *authp = NULL;
2303 EVP_CIPHER_CTX ciph_ctx;
2304 const EVP_CIPHER *enc = NULL;
2305 unsigned char iv[EVP_MAX_IV_LENGTH];
2306 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2307 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2308 + EVP_MAX_IV_LENGTH];
2309 int padl, outl = sizeof(epms);
2311 EVP_CIPHER_CTX_init(&ciph_ctx);
2314 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2316 #endif /* KSSL_DEBUG */
2320 if (KRB5SENDAUTH) authp = &authenticator;
2321 #endif /* KRB5SENDAUTH */
2323 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2325 enc = kssl_map_enc(kssl_ctx->enctype);
2330 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2331 if (krb5rc && kssl_err.text)
2332 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2334 #endif /* KSSL_DEBUG */
2338 ssl3_send_alert(s,SSL3_AL_FATAL,
2339 SSL_AD_HANDSHAKE_FAILURE);
2340 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2345 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2346 ** in place of RFC 2712 KerberosWrapper, as in:
2348 ** Send ticket (copy to *p, set n = length)
2349 ** n = krb5_ap_req.length;
2350 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2351 ** if (krb5_ap_req.data)
2352 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2354 ** Now using real RFC 2712 KerberosWrapper
2355 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2356 ** Note: 2712 "opaque" types are here replaced
2357 ** with a 2-byte length followed by the value.
2359 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2360 ** Where "xx xx" = length bytes. Shown here with
2361 ** optional authenticator omitted.
2364 /* KerberosWrapper.Ticket */
2365 s2n(enc_ticket->length,p);
2366 memcpy(p, enc_ticket->data, enc_ticket->length);
2367 p+= enc_ticket->length;
2368 n = enc_ticket->length + 2;
2370 /* KerberosWrapper.Authenticator */
2371 if (authp && authp->length)
2373 s2n(authp->length,p);
2374 memcpy(p, authp->data, authp->length);
2376 n+= authp->length + 2;
2384 s2n(0,p);/* null authenticator length */
2388 tmp_buf[0]=s->client_version>>8;
2389 tmp_buf[1]=s->client_version&0xff;
2390 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2393 /* 20010420 VRS. Tried it this way; failed.
2394 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2395 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2396 ** kssl_ctx->length);
2397 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2400 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2401 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2403 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2405 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2407 if (outl > (int)sizeof epms)
2409 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2412 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2414 /* KerberosWrapper.EncryptedPreMasterSecret */
2416 memcpy(p, epms, outl);
2420 s->session->master_key_length=
2421 s->method->ssl3_enc->generate_master_secret(s,
2422 s->session->master_key,
2423 tmp_buf, sizeof tmp_buf);
2425 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2426 OPENSSL_cleanse(epms, outl);
2429 #ifndef OPENSSL_NO_DH
2430 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2432 DH *dh_srvr,*dh_clnt;
2433 SESS_CERT *scert = s->session->sess_cert;
2437 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2438 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2442 if (scert->peer_dh_tmp != NULL)
2443 dh_srvr=scert->peer_dh_tmp;
2446 /* we get them from the cert */
2447 int idx = scert->peer_cert_type;
2448 EVP_PKEY *spkey = NULL;
2451 spkey = X509_get_pubkey(
2452 scert->peer_pkeys[idx].x509);
2455 dh_srvr = EVP_PKEY_get1_DH(spkey);
2456 EVP_PKEY_free(spkey);
2458 if (dh_srvr == NULL)
2460 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2461 ERR_R_INTERNAL_ERROR);
2465 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
2467 /* Use client certificate key */
2468 EVP_PKEY *clkey = s->cert->key->privatekey;
2471 dh_clnt = EVP_PKEY_get1_DH(clkey);
2472 if (dh_clnt == NULL)
2474 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2475 ERR_R_INTERNAL_ERROR);
2481 /* generate a new random key */
2482 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2484 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2487 if (!DH_generate_key(dh_clnt))
2489 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2495 /* use the 'p' output buffer for the DH key, but
2496 * make sure to clear it out afterwards */
2498 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2499 if (scert->peer_dh_tmp == NULL)
2504 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2509 /* generate master key from the result */
2510 s->session->master_key_length=
2511 s->method->ssl3_enc->generate_master_secret(s,
2512 s->session->master_key,p,n);
2516 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
2520 /* send off the data */
2521 n=BN_num_bytes(dh_clnt->pub_key);
2523 BN_bn2bin(dh_clnt->pub_key,p);
2529 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2533 #ifndef OPENSSL_NO_ECDH
2534 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2536 const EC_GROUP *srvr_group = NULL;
2538 int ecdh_clnt_cert = 0;
2541 /* Did we send out the client's
2542 * ECDH share for use in premaster
2543 * computation as part of client certificate?
2544 * If so, set ecdh_clnt_cert to 1.
2546 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2548 /* XXX: For now, we do not support client
2549 * authentication using ECDH certificates.
2550 * To add such support, one needs to add
2551 * code that checks for appropriate
2552 * conditions and sets ecdh_clnt_cert to 1.
2553 * For example, the cert have an ECC
2554 * key on the same curve as the server's
2555 * and the key should be authorized for
2558 * One also needs to add code in ssl3_connect
2559 * to skip sending the certificate verify
2562 * if ((s->cert->key->privatekey != NULL) &&
2563 * (s->cert->key->privatekey->type ==
2564 * EVP_PKEY_EC) && ...)
2565 * ecdh_clnt_cert = 1;
2569 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2571 tkey = s->session->sess_cert->peer_ecdh_tmp;
2575 /* Get the Server Public Key from Cert */
2576 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2577 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2578 if ((srvr_pub_pkey == NULL) ||
2579 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2580 (srvr_pub_pkey->pkey.ec == NULL))
2582 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2583 ERR_R_INTERNAL_ERROR);
2587 tkey = srvr_pub_pkey->pkey.ec;
2590 srvr_group = EC_KEY_get0_group(tkey);
2591 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2593 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2595 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2596 ERR_R_INTERNAL_ERROR);
2600 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2602 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2606 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2608 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2613 /* Reuse key info from our certificate
2614 * We only need our private key to perform
2615 * the ECDH computation.
2617 const BIGNUM *priv_key;
2618 tkey = s->cert->key->privatekey->pkey.ec;
2619 priv_key = EC_KEY_get0_private_key(tkey);
2620 if (priv_key == NULL)
2622 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2625 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2627 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2633 /* Generate a new ECDH key pair */
2634 if (!(EC_KEY_generate_key(clnt_ecdh)))
2636 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2641 /* use the 'p' output buffer for the ECDH key, but
2642 * make sure to clear it out afterwards
2645 field_size = EC_GROUP_get_degree(srvr_group);
2646 if (field_size <= 0)
2648 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2652 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2655 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2660 /* generate master key from the result */
2661 s->session->master_key_length = s->method->ssl3_enc \
2662 -> generate_master_secret(s,
2663 s->session->master_key,
2666 memset(p, 0, n); /* clean up */
2670 /* Send empty client key exch message */
2675 /* First check the size of encoding and
2676 * allocate memory accordingly.
2679 EC_POINT_point2oct(srvr_group,
2680 EC_KEY_get0_public_key(clnt_ecdh),
2681 POINT_CONVERSION_UNCOMPRESSED,
2684 encodedPoint = (unsigned char *)
2685 OPENSSL_malloc(encoded_pt_len *
2686 sizeof(unsigned char));
2687 bn_ctx = BN_CTX_new();
2688 if ((encodedPoint == NULL) ||
2691 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2695 /* Encode the public key */
2696 n = EC_POINT_point2oct(srvr_group,
2697 EC_KEY_get0_public_key(clnt_ecdh),
2698 POINT_CONVERSION_UNCOMPRESSED,
2699 encodedPoint, encoded_pt_len, bn_ctx);
2701 *p = n; /* length of encoded point */
2702 /* Encoded point will be copied here */
2704 /* copy the point */
2705 memcpy((unsigned char *)p, encodedPoint, n);
2706 /* increment n to account for length field */
2710 /* Free allocated memory */
2711 BN_CTX_free(bn_ctx);
2712 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2713 if (clnt_ecdh != NULL)
2714 EC_KEY_free(clnt_ecdh);
2715 EVP_PKEY_free(srvr_pub_pkey);
2717 #endif /* !OPENSSL_NO_ECDH */
2718 else if (alg_k & SSL_kGOST)
2720 /* GOST key exchange message creation */
2721 EVP_PKEY_CTX *pkey_ctx;
2724 unsigned int md_len;
2726 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2727 EVP_MD_CTX *ukm_hash;
2730 /* Get server sertificate PKEY and create ctx from it */
2731 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2733 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2735 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2739 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2740 /* If we have send a certificate, and certificate key
2742 * parameters match those of server certificate, use
2743 * certificate key for key exchange
2746 /* Otherwise, generate ephemeral key pair */
2748 EVP_PKEY_encrypt_init(pkey_ctx);
2749 /* Generate session key */
2750 RAND_bytes(premaster_secret,32);
2751 /* If we have client certificate, use its secret as peer key */
2752 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2753 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2754 /* If there was an error - just ignore it. Ephemeral key
2760 /* Compute shared IV and store it in algorithm-specific
2762 ukm_hash = EVP_MD_CTX_create();
2763 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2764 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2765 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2766 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2767 EVP_MD_CTX_destroy(ukm_hash);
2768 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2770 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2774 /* Make GOST keytransport blob message */
2775 /*Encapsulate it into sequence */
2776 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2778 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2779 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2786 *(p++)= msglen & 0xff;
2791 *(p++)= msglen & 0xff;
2794 memcpy(p, tmp, msglen);
2795 /* Check if pubkey from client certificate was used */
2796 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2798 /* Set flag "skip certificate verify" */
2799 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2801 EVP_PKEY_CTX_free(pkey_ctx);
2802 s->session->master_key_length=
2803 s->method->ssl3_enc->generate_master_secret(s,
2804 s->session->master_key,premaster_secret,32);
2805 EVP_PKEY_free(pub_key);
2808 #ifndef OPENSSL_NO_SRP
2809 else if (alg_k & SSL_kSRP)
2811 if (s->srp_ctx.A != NULL)
2813 /* send off the data */
2814 n=BN_num_bytes(s->srp_ctx.A);
2816 BN_bn2bin(s->srp_ctx.A,p);
2821 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2824 if (s->session->srp_username != NULL)
2825 OPENSSL_free(s->session->srp_username);
2826 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2827 if (s->session->srp_username == NULL)
2829 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2830 ERR_R_MALLOC_FAILURE);
2834 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2836 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2841 #ifndef OPENSSL_NO_PSK
2842 else if (alg_k & SSL_kPSK)
2844 char identity[PSK_MAX_IDENTITY_LEN];
2845 unsigned char *t = NULL;
2846 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2847 unsigned int pre_ms_len = 0, psk_len = 0;
2851 if (s->psk_client_callback == NULL)
2853 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2854 SSL_R_PSK_NO_CLIENT_CB);
2858 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2859 identity, PSK_MAX_IDENTITY_LEN,
2860 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2861 if (psk_len > PSK_MAX_PSK_LEN)
2863 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2864 ERR_R_INTERNAL_ERROR);
2867 else if (psk_len == 0)
2869 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2870 SSL_R_PSK_IDENTITY_NOT_FOUND);
2874 /* create PSK pre_master_secret */
2875 pre_ms_len = 2+psk_len+2+psk_len;
2877 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2879 memset(t, 0, psk_len);
2883 if (s->session->psk_identity_hint != NULL)
2884 OPENSSL_free(s->session->psk_identity_hint);
2885 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2886 if (s->ctx->psk_identity_hint != NULL &&
2887 s->session->psk_identity_hint == NULL)
2889 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2890 ERR_R_MALLOC_FAILURE);
2894 if (s->session->psk_identity != NULL)
2895 OPENSSL_free(s->session->psk_identity);
2896 s->session->psk_identity = BUF_strdup(identity);
2897 if (s->session->psk_identity == NULL)
2899 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2900 ERR_R_MALLOC_FAILURE);
2904 s->session->master_key_length =
2905 s->method->ssl3_enc->generate_master_secret(s,
2906 s->session->master_key,
2907 psk_or_pre_ms, pre_ms_len);
2908 n = strlen(identity);
2910 memcpy(p, identity, n);
2914 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2915 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2918 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2925 ssl3_send_alert(s, SSL3_AL_FATAL,
2926 SSL_AD_HANDSHAKE_FAILURE);
2927 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2928 ERR_R_INTERNAL_ERROR);
2932 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2935 s->state=SSL3_ST_CW_KEY_EXCH_B;
2936 /* number of bytes to write */
2941 /* SSL3_ST_CW_KEY_EXCH_B */
2942 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2944 #ifndef OPENSSL_NO_ECDH
2945 BN_CTX_free(bn_ctx);
2946 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2947 if (clnt_ecdh != NULL)
2948 EC_KEY_free(clnt_ecdh);
2949 EVP_PKEY_free(srvr_pub_pkey);
2954 int ssl3_send_client_verify(SSL *s)
2956 unsigned char *p,*d;
2957 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2959 EVP_PKEY_CTX *pctx=NULL;
2965 EVP_MD_CTX_init(&mctx);
2967 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2969 d=(unsigned char *)s->init_buf->data;
2971 pkey=s->cert->key->privatekey;
2972 /* Create context from key and test if sha1 is allowed as digest */
2973 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2974 EVP_PKEY_sign_init(pctx);
2975 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2977 if (TLS1_get_version(s) < TLS1_2_VERSION)
2978 s->method->ssl3_enc->cert_verify_mac(s,
2980 &(data[MD5_DIGEST_LENGTH]));
2986 /* For TLS v1.2 send signature algorithm and signature
2987 * using agreed digest and cached handshake records.
2989 if (TLS1_get_version(s) >= TLS1_2_VERSION)
2993 const EVP_MD *md = s->cert->key->digest;
2994 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
2996 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
2998 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2999 ERR_R_INTERNAL_ERROR);
3004 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
3007 if (!EVP_SignInit_ex(&mctx, md, NULL)
3008 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
3009 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
3011 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3017 if (!ssl3_digest_cached_records(s))
3021 #ifndef OPENSSL_NO_RSA
3022 if (pkey->type == EVP_PKEY_RSA)
3024 s->method->ssl3_enc->cert_verify_mac(s,
3027 if (RSA_sign(NID_md5_sha1, data,
3028 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
3029 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
3031 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
3039 #ifndef OPENSSL_NO_DSA
3040 if (pkey->type == EVP_PKEY_DSA)
3042 if (!DSA_sign(pkey->save_type,
3043 &(data[MD5_DIGEST_LENGTH]),
3044 SHA_DIGEST_LENGTH,&(p[2]),
3045 (unsigned int *)&j,pkey->pkey.dsa))
3047 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
3055 #ifndef OPENSSL_NO_ECDSA
3056 if (pkey->type == EVP_PKEY_EC)
3058 if (!ECDSA_sign(pkey->save_type,
3059 &(data[MD5_DIGEST_LENGTH]),
3060 SHA_DIGEST_LENGTH,&(p[2]),
3061 (unsigned int *)&j,pkey->pkey.ec))
3063 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3072 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
3074 unsigned char signbuf[64];
3077 s->method->ssl3_enc->cert_verify_mac(s,
3078 NID_id_GostR3411_94,
3080 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
3081 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3082 ERR_R_INTERNAL_ERROR);
3085 for (i=63,j=0; i>=0; j++, i--) {
3093 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
3096 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
3099 s->state=SSL3_ST_CW_CERT_VRFY_B;
3100 s->init_num=(int)n+4;
3103 EVP_MD_CTX_cleanup(&mctx);
3104 EVP_PKEY_CTX_free(pctx);
3105 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3107 EVP_MD_CTX_cleanup(&mctx);
3108 EVP_PKEY_CTX_free(pctx);
3112 /* Check a certificate can be used for client authentication. Currently
3113 * just check cert exists and if static DH client certificates can be used.
3115 static int ssl3_check_client_certificate(SSL *s)
3117 unsigned long alg_k;
3118 if (!s->cert || !s->cert->key->x509 || !s->cert->key->privatekey)
3120 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3121 /* See if we can use client certificate for fixed DH */
3122 if (alg_k & (SSL_kDHr|SSL_kDHd))
3124 SESS_CERT *scert = s->session->sess_cert;
3125 int i = scert->peer_cert_type;
3126 EVP_PKEY *clkey = NULL, *spkey = NULL;
3127 clkey = s->cert->key->privatekey;
3128 /* If client key not DH assume it can be used */
3129 if (EVP_PKEY_id(clkey) != EVP_PKEY_DH)
3132 spkey = X509_get_pubkey(scert->peer_pkeys[i].x509);
3135 /* Compare server and client parameters */
3136 i = EVP_PKEY_cmp_parameters(clkey, spkey);
3137 EVP_PKEY_free(spkey);
3141 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
3146 int ssl3_send_client_certificate(SSL *s)
3149 EVP_PKEY *pkey=NULL;
3153 if (s->state == SSL3_ST_CW_CERT_A)
3155 if (ssl3_check_client_certificate(s))
3156 s->state=SSL3_ST_CW_CERT_C;
3158 s->state=SSL3_ST_CW_CERT_B;
3161 /* We need to get a client cert */
3162 if (s->state == SSL3_ST_CW_CERT_B)
3164 /* If we get an error, we need to
3165 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3166 * We then get retied later */
3168 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3171 s->rwstate=SSL_X509_LOOKUP;
3174 s->rwstate=SSL_NOTHING;
3175 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3177 s->state=SSL3_ST_CW_CERT_B;
3178 if ( !SSL_use_certificate(s,x509) ||
3179 !SSL_use_PrivateKey(s,pkey))
3185 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3188 if (x509 != NULL) X509_free(x509);
3189 if (pkey != NULL) EVP_PKEY_free(pkey);
3190 if (i && !ssl3_check_client_certificate(s))
3194 if (s->version == SSL3_VERSION)
3196 s->s3->tmp.cert_req=0;
3197 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3202 s->s3->tmp.cert_req=2;
3206 /* Ok, we have a cert */
3207 s->state=SSL3_ST_CW_CERT_C;
3210 if (s->state == SSL3_ST_CW_CERT_C)
3212 s->state=SSL3_ST_CW_CERT_D;
3213 l=ssl3_output_cert_chain(s,
3214 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
3218 /* SSL3_ST_CW_CERT_D */
3219 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3222 #define has_bits(i,m) (((i)&(m)) == (m))
3224 int ssl3_check_cert_and_algorithm(SSL *s)
3228 EVP_PKEY *pkey=NULL;
3230 #ifndef OPENSSL_NO_RSA
3233 #ifndef OPENSSL_NO_DH
3237 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3238 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3240 /* we don't have a certificate */
3241 if ((alg_a & (SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3244 sc=s->session->sess_cert;
3247 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3251 #ifndef OPENSSL_NO_RSA
3252 rsa=s->session->sess_cert->peer_rsa_tmp;
3254 #ifndef OPENSSL_NO_DH
3255 dh=s->session->sess_cert->peer_dh_tmp;
3258 /* This is the passed certificate */
3260 idx=sc->peer_cert_type;
3261 #ifndef OPENSSL_NO_ECDH
3262 if (idx == SSL_PKEY_ECC)
3264 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3266 { /* check failed */
3267 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3276 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3277 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3278 EVP_PKEY_free(pkey);
3281 /* Check that we have a certificate if we require one */
3282 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3284 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3287 #ifndef OPENSSL_NO_DSA
3288 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3290 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3294 #ifndef OPENSSL_NO_RSA
3295 if ((alg_k & SSL_kRSA) &&
3296 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3298 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3302 #ifndef OPENSSL_NO_DH
3303 if ((alg_k & SSL_kEDH) &&
3304 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3306 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3309 else if ((alg_k & SSL_kDHr) && (TLS1_get_version(s) < TLS1_2_VERSION) &&
3310 !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3312 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3315 #ifndef OPENSSL_NO_DSA
3316 else if ((alg_k & SSL_kDHd) && (TLS1_get_version(s) < TLS1_2_VERSION) &&
3317 !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3319 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3325 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3327 #ifndef OPENSSL_NO_RSA
3328 if (alg_k & SSL_kRSA)
3331 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3333 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3339 #ifndef OPENSSL_NO_DH
3340 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3343 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3345 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3352 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3358 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3363 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
3364 int ssl3_send_next_proto(SSL *s)
3366 unsigned int len, padding_len;
3369 if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
3371 len = s->next_proto_negotiated_len;
3372 padding_len = 32 - ((len + 2) % 32);
3373 d = (unsigned char *)s->init_buf->data;
3375 memcpy(d + 5, s->next_proto_negotiated, len);
3376 d[5 + len] = padding_len;
3377 memset(d + 6 + len, 0, padding_len);
3378 *(d++)=SSL3_MT_NEXT_PROTO;
3379 l2n3(2 + len + padding_len, d);
3380 s->state = SSL3_ST_CW_NEXT_PROTO_B;
3381 s->init_num = 4 + 2 + len + padding_len;
3385 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3387 #endif /* !OPENSSL_NO_TLSEXT && !OPENSSL_NO_NEXTPROTONEG */
3389 /* Check to see if handshake is full or resumed. Usually this is just a
3390 * case of checking to see if a cache hit has occurred. In the case of
3391 * session tickets we have to check the next message to be sure.
3394 #ifndef OPENSSL_NO_TLSEXT
3395 int ssl3_check_finished(SSL *s)
3399 /* If we have no ticket it cannot be a resumed session. */
3400 if (!s->session->tlsext_tick)
3402 /* this function is called when we really expect a Certificate
3403 * message, so permit appropriate message length */
3404 n=s->method->ssl_get_message(s,
3410 if (!ok) return((int)n);
3411 s->s3->tmp.reuse_message = 1;
3412 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3413 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3420 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3423 #ifndef OPENSSL_NO_ENGINE
3424 if (s->ctx->client_cert_engine)
3426 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3427 SSL_get_client_CA_list(s),
3428 px509, ppkey, NULL, NULL, NULL);
3433 if (s->ctx->client_cert_cb)
3434 i = s->ctx->client_cert_cb(s,px509,ppkey);