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>
159 #ifndef OPENSSL_NO_DH
160 #include <openssl/dh.h>
162 #include <openssl/bn.h>
163 #ifndef OPENSSL_NO_ENGINE
164 #include <openssl/engine.h>
167 static const SSL_METHOD *ssl3_get_client_method(int ver);
168 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
170 static const SSL_METHOD *ssl3_get_client_method(int ver)
172 if (ver == SSL3_VERSION)
173 return(SSLv3_client_method());
178 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
179 ssl_undefined_function,
181 ssl3_get_client_method)
183 int ssl3_connect(SSL *s)
186 unsigned long Time=(unsigned long)time(NULL);
187 void (*cb)(const SSL *ssl,int type,int val)=NULL;
189 int new_state,state,skip=0;
191 RAND_add(&Time,sizeof(Time),0);
195 if (s->info_callback != NULL)
197 else if (s->ctx->info_callback != NULL)
198 cb=s->ctx->info_callback;
201 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
209 case SSL_ST_RENEGOTIATE:
211 s->state=SSL_ST_CONNECT;
212 s->ctx->stats.sess_connect_renegotiate++;
216 case SSL_ST_BEFORE|SSL_ST_CONNECT:
217 case SSL_ST_OK|SSL_ST_CONNECT:
220 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
222 if ((s->version & 0xff00 ) != 0x0300)
224 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
229 /* s->version=SSL3_VERSION; */
230 s->type=SSL_ST_CONNECT;
232 if (s->init_buf == NULL)
234 if ((buf=BUF_MEM_new()) == NULL)
239 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
248 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
250 /* setup buffing BIO */
251 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
253 /* don't push the buffering BIO quite yet */
255 ssl3_init_finished_mac(s);
257 s->state=SSL3_ST_CW_CLNT_HELLO_A;
258 s->ctx->stats.sess_connect++;
262 case SSL3_ST_CW_CLNT_HELLO_A:
263 case SSL3_ST_CW_CLNT_HELLO_B:
266 ret=ssl3_client_hello(s);
267 if (ret <= 0) goto end;
268 s->state=SSL3_ST_CR_SRVR_HELLO_A;
271 /* turn on buffering for the next lot of output */
272 if (s->bbio != s->wbio)
273 s->wbio=BIO_push(s->bbio,s->wbio);
277 case SSL3_ST_CR_SRVR_HELLO_A:
278 case SSL3_ST_CR_SRVR_HELLO_B:
279 ret=ssl3_get_server_hello(s);
280 if (ret <= 0) goto end;
283 s->state=SSL3_ST_CR_FINISHED_A;
285 s->state=SSL3_ST_CR_CERT_A;
289 case SSL3_ST_CR_CERT_A:
290 case SSL3_ST_CR_CERT_B:
291 #ifndef OPENSSL_NO_TLSEXT
292 ret=ssl3_check_finished(s);
293 if (ret <= 0) goto end;
297 if (s->tlsext_ticket_expected)
298 s->state=SSL3_ST_CR_SESSION_TICKET_A;
300 s->state=SSL3_ST_CR_FINISHED_A;
305 /* Check if it is anon DH/ECDH */
307 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
308 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
310 ret=ssl3_get_server_certificate(s);
311 if (ret <= 0) goto end;
312 #ifndef OPENSSL_NO_TLSEXT
313 if (s->tlsext_status_expected)
314 s->state=SSL3_ST_CR_CERT_STATUS_A;
316 s->state=SSL3_ST_CR_KEY_EXCH_A;
321 s->state=SSL3_ST_CR_KEY_EXCH_A;
328 s->state=SSL3_ST_CR_KEY_EXCH_A;
333 case SSL3_ST_CR_KEY_EXCH_A:
334 case SSL3_ST_CR_KEY_EXCH_B:
335 ret=ssl3_get_key_exchange(s);
336 if (ret <= 0) goto end;
337 s->state=SSL3_ST_CR_CERT_REQ_A;
340 /* at this point we check that we have the
341 * required stuff from the server */
342 if (!ssl3_check_cert_and_algorithm(s))
349 case SSL3_ST_CR_CERT_REQ_A:
350 case SSL3_ST_CR_CERT_REQ_B:
351 ret=ssl3_get_certificate_request(s);
352 if (ret <= 0) goto end;
353 s->state=SSL3_ST_CR_SRVR_DONE_A;
357 case SSL3_ST_CR_SRVR_DONE_A:
358 case SSL3_ST_CR_SRVR_DONE_B:
359 ret=ssl3_get_server_done(s);
360 if (ret <= 0) goto end;
361 if (s->s3->tmp.cert_req)
362 s->state=SSL3_ST_CW_CERT_A;
364 s->state=SSL3_ST_CW_KEY_EXCH_A;
369 case SSL3_ST_CW_CERT_A:
370 case SSL3_ST_CW_CERT_B:
371 case SSL3_ST_CW_CERT_C:
372 case SSL3_ST_CW_CERT_D:
373 ret=ssl3_send_client_certificate(s);
374 if (ret <= 0) goto end;
375 s->state=SSL3_ST_CW_KEY_EXCH_A;
379 case SSL3_ST_CW_KEY_EXCH_A:
380 case SSL3_ST_CW_KEY_EXCH_B:
381 ret=ssl3_send_client_key_exchange(s);
382 if (ret <= 0) goto end;
383 /* EAY EAY EAY need to check for DH fix cert
385 /* For TLS, cert_req is set to 2, so a cert chain
386 * of nothing is sent, but no verify packet is sent */
387 /* XXX: For now, we do not support client
388 * authentication in ECDH cipher suites with
389 * ECDH (rather than ECDSA) certificates.
390 * We need to skip the certificate verify
391 * message when client's ECDH public key is sent
392 * inside the client certificate.
394 if (s->s3->tmp.cert_req == 1)
396 s->state=SSL3_ST_CW_CERT_VRFY_A;
400 s->state=SSL3_ST_CW_CHANGE_A;
401 s->s3->change_cipher_spec=0;
403 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
405 s->state=SSL3_ST_CW_CHANGE_A;
406 s->s3->change_cipher_spec=0;
412 case SSL3_ST_CW_CERT_VRFY_A:
413 case SSL3_ST_CW_CERT_VRFY_B:
414 ret=ssl3_send_client_verify(s);
415 if (ret <= 0) goto end;
416 s->state=SSL3_ST_CW_CHANGE_A;
418 s->s3->change_cipher_spec=0;
421 case SSL3_ST_CW_CHANGE_A:
422 case SSL3_ST_CW_CHANGE_B:
423 ret=ssl3_send_change_cipher_spec(s,
424 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
425 if (ret <= 0) goto end;
427 #if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NPN)
428 s->state=SSL3_ST_CW_FINISHED_A;
430 if (s->next_proto_negotiated)
431 s->state=SSL3_ST_CW_NEXT_PROTO_A;
433 s->state=SSL3_ST_CW_FINISHED_A;
437 s->session->cipher=s->s3->tmp.new_cipher;
438 #ifdef OPENSSL_NO_COMP
439 s->session->compress_meth=0;
441 if (s->s3->tmp.new_compression == NULL)
442 s->session->compress_meth=0;
444 s->session->compress_meth=
445 s->s3->tmp.new_compression->id;
447 if (!s->method->ssl3_enc->setup_key_block(s))
453 if (!s->method->ssl3_enc->change_cipher_state(s,
454 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
462 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NPN)
463 case SSL3_ST_CW_NEXT_PROTO_A:
464 case SSL3_ST_CW_NEXT_PROTO_B:
465 ret=ssl3_send_next_proto(s);
466 if (ret <= 0) goto end;
467 s->state=SSL3_ST_CW_FINISHED_A;
471 case SSL3_ST_CW_FINISHED_A:
472 case SSL3_ST_CW_FINISHED_B:
473 ret=ssl3_send_finished(s,
474 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
475 s->method->ssl3_enc->client_finished_label,
476 s->method->ssl3_enc->client_finished_label_len);
477 if (ret <= 0) goto end;
478 s->state=SSL3_ST_CW_FLUSH;
481 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
484 s->s3->tmp.next_state=SSL_ST_OK;
485 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
488 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
489 s->s3->delay_buf_pop_ret=0;
494 #ifndef OPENSSL_NO_TLSEXT
495 /* Allow NewSessionTicket if ticket expected */
496 if (s->tlsext_ticket_expected)
497 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
501 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
506 #ifndef OPENSSL_NO_TLSEXT
507 case SSL3_ST_CR_SESSION_TICKET_A:
508 case SSL3_ST_CR_SESSION_TICKET_B:
509 ret=ssl3_get_new_session_ticket(s);
510 if (ret <= 0) goto end;
511 s->state=SSL3_ST_CR_FINISHED_A;
515 case SSL3_ST_CR_CERT_STATUS_A:
516 case SSL3_ST_CR_CERT_STATUS_B:
517 ret=ssl3_get_cert_status(s);
518 if (ret <= 0) goto end;
519 s->state=SSL3_ST_CR_KEY_EXCH_A;
524 case SSL3_ST_CR_FINISHED_A:
525 case SSL3_ST_CR_FINISHED_B:
527 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
528 SSL3_ST_CR_FINISHED_B);
529 if (ret <= 0) goto end;
532 s->state=SSL3_ST_CW_CHANGE_A;
538 case SSL3_ST_CW_FLUSH:
539 s->rwstate=SSL_WRITING;
540 if (BIO_flush(s->wbio) <= 0)
545 s->rwstate=SSL_NOTHING;
546 s->state=s->s3->tmp.next_state;
550 /* clean a few things up */
551 ssl3_cleanup_key_block(s);
553 if (s->init_buf != NULL)
555 BUF_MEM_free(s->init_buf);
559 /* If we are not 'joining' the last two packets,
560 * remove the buffering now */
561 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
562 ssl_free_wbio_buffer(s);
563 /* else do it later in ssl3_write */
569 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
570 if (s->hit) s->ctx->stats.sess_hit++;
574 s->handshake_func=ssl3_connect;
575 s->ctx->stats.sess_connect_good++;
577 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
583 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
589 /* did we do anything */
590 if (!s->s3->tmp.reuse_message && !skip)
594 if ((ret=BIO_flush(s->wbio)) <= 0)
598 if ((cb != NULL) && (s->state != state))
602 cb(s,SSL_CB_CONNECT_LOOP,1);
613 cb(s,SSL_CB_CONNECT_EXIT,ret);
618 int ssl3_client_hello(SSL *s)
623 unsigned long Time,l;
624 #ifndef OPENSSL_NO_COMP
629 buf=(unsigned char *)s->init_buf->data;
630 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
632 SSL_SESSION *sess = s->session;
633 if ((sess == NULL) ||
634 (sess->ssl_version != s->version) ||
635 #ifdef OPENSSL_NO_TLSEXT
636 !sess->session_id_length ||
638 (!sess->session_id_length && !sess->tlsext_tick) ||
640 (sess->not_resumable))
642 if (!ssl_get_new_session(s,0))
645 /* else use the pre-loaded session */
647 p=s->s3->client_random;
648 Time=(unsigned long)time(NULL); /* Time */
650 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
653 /* Do the message type and length last */
656 *(p++)=s->version>>8;
657 *(p++)=s->version&0xff;
658 s->client_version=s->version;
661 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
668 i=s->session->session_id_length;
672 if (i > (int)sizeof(s->session->session_id))
674 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
677 memcpy(p,s->session->session_id,i);
681 /* Ciphers supported */
682 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
685 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
692 #ifdef OPENSSL_NO_COMP
696 if ((s->options & SSL_OP_NO_COMPRESSION)
697 || !s->ctx->comp_methods)
700 j=sk_SSL_COMP_num(s->ctx->comp_methods);
704 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
708 *(p++)=0; /* Add the NULL method */
710 #ifndef OPENSSL_NO_TLSEXT
712 if (ssl_prepare_clienthello_tlsext(s) <= 0)
714 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
717 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
719 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
726 *(d++)=SSL3_MT_CLIENT_HELLO;
729 s->state=SSL3_ST_CW_CLNT_HELLO_B;
730 /* number of bytes to write */
735 /* SSL3_ST_CW_CLNT_HELLO_B */
736 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
741 int ssl3_get_server_hello(SSL *s)
743 STACK_OF(SSL_CIPHER) *sk;
749 #ifndef OPENSSL_NO_COMP
753 n=s->method->ssl_get_message(s,
754 SSL3_ST_CR_SRVR_HELLO_A,
755 SSL3_ST_CR_SRVR_HELLO_B,
760 if (!ok) return((int)n);
762 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
764 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
766 if ( s->d1->send_cookie == 0)
768 s->s3->tmp.reuse_message = 1;
771 else /* already sent a cookie */
773 al=SSL_AD_UNEXPECTED_MESSAGE;
774 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
780 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
782 al=SSL_AD_UNEXPECTED_MESSAGE;
783 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
787 d=p=(unsigned char *)s->init_msg;
789 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
791 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
792 s->version=(s->version&0xff00)|p[1];
793 al=SSL_AD_PROTOCOL_VERSION;
798 /* load the server hello data */
799 /* load the server random */
800 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
803 /* get the session-id */
806 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
808 al=SSL_AD_ILLEGAL_PARAMETER;
809 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
813 #ifndef OPENSSL_NO_TLSEXT
814 /* check if we want to resume the session based on external pre-shared secret */
815 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
817 SSL_CIPHER *pref_cipher=NULL;
818 s->session->master_key_length=sizeof(s->session->master_key);
819 if (s->tls_session_secret_cb(s, s->session->master_key,
820 &s->session->master_key_length,
822 s->tls_session_secret_cb_arg))
824 s->session->cipher = pref_cipher ?
825 pref_cipher : ssl_get_cipher_by_char(s, p+j);
828 #endif /* OPENSSL_NO_TLSEXT */
830 if (j != 0 && j == s->session->session_id_length
831 && memcmp(p,s->session->session_id,j) == 0)
833 if(s->sid_ctx_length != s->session->sid_ctx_length
834 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
836 /* actually a client application bug */
837 al=SSL_AD_ILLEGAL_PARAMETER;
838 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
843 else /* a miss or crap from the other end */
845 /* If we were trying for session-id reuse, make a new
846 * SSL_SESSION so we don't stuff up other people */
848 if (s->session->session_id_length > 0)
850 if (!ssl_get_new_session(s,0))
852 al=SSL_AD_INTERNAL_ERROR;
856 s->session->session_id_length=j;
857 memcpy(s->session->session_id,p,j); /* j could be 0 */
860 c=ssl_get_cipher_by_char(s,p);
864 al=SSL_AD_ILLEGAL_PARAMETER;
865 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
868 p+=ssl_put_cipher_by_char(s,NULL,NULL);
870 sk=ssl_get_ciphers_by_id(s);
871 i=sk_SSL_CIPHER_find(sk,c);
874 /* we did not say we would use this cipher */
875 al=SSL_AD_ILLEGAL_PARAMETER;
876 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
880 /* Depending on the session caching (internal/external), the cipher
881 and/or cipher_id values may not be set. Make sure that
882 cipher_id is set and use it for comparison. */
883 if (s->session->cipher)
884 s->session->cipher_id = s->session->cipher->id;
885 if (s->hit && (s->session->cipher_id != c->id))
888 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
890 al=SSL_AD_ILLEGAL_PARAMETER;
891 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
895 s->s3->tmp.new_cipher=c;
896 if (!ssl3_digest_cached_records(s))
899 /* lets get the compression algorithm */
901 #ifdef OPENSSL_NO_COMP
904 al=SSL_AD_ILLEGAL_PARAMETER;
905 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
908 /* If compression is disabled we'd better not try to resume a session
911 if (s->session->compress_meth != 0)
913 al=SSL_AD_INTERNAL_ERROR;
914 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
919 if (s->hit && j != s->session->compress_meth)
921 al=SSL_AD_ILLEGAL_PARAMETER;
922 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
927 else if (s->options & SSL_OP_NO_COMPRESSION)
929 al=SSL_AD_ILLEGAL_PARAMETER;
930 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
934 comp=ssl3_comp_find(s->ctx->comp_methods,j);
936 if ((j != 0) && (comp == NULL))
938 al=SSL_AD_ILLEGAL_PARAMETER;
939 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
944 s->s3->tmp.new_compression=comp;
948 #ifndef OPENSSL_NO_TLSEXT
950 if (s->version >= SSL3_VERSION)
952 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
954 /* 'al' set by ssl_parse_serverhello_tlsext */
955 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
958 if (ssl_check_serverhello_tlsext(s) <= 0)
960 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
968 /* wrong packet length */
969 al=SSL_AD_DECODE_ERROR;
970 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
976 ssl3_send_alert(s,SSL3_AL_FATAL,al);
981 int ssl3_get_server_certificate(SSL *s)
984 unsigned long n,nc,llen,l;
986 const unsigned char *q,*p;
988 STACK_OF(X509) *sk=NULL;
991 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
993 n=s->method->ssl_get_message(s,
1000 if (!ok) return((int)n);
1002 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1003 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1004 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1006 s->s3->tmp.reuse_message=1;
1010 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1012 al=SSL_AD_UNEXPECTED_MESSAGE;
1013 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1016 p=d=(unsigned char *)s->init_msg;
1018 if ((sk=sk_X509_new_null()) == NULL)
1020 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1027 al=SSL_AD_DECODE_ERROR;
1028 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1031 for (nc=0; nc<llen; )
1034 if ((l+nc+3) > llen)
1036 al=SSL_AD_DECODE_ERROR;
1037 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1042 x=d2i_X509(NULL,&q,l);
1045 al=SSL_AD_BAD_CERTIFICATE;
1046 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1051 al=SSL_AD_DECODE_ERROR;
1052 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1055 if (!sk_X509_push(sk,x))
1057 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1065 i=ssl_verify_cert_chain(s,sk);
1066 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1067 #ifndef OPENSSL_NO_KRB5
1068 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1069 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1070 #endif /* OPENSSL_NO_KRB5 */
1073 al=ssl_verify_alarm_type(s->verify_result);
1074 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1077 ERR_clear_error(); /* but we keep s->verify_result */
1079 sc=ssl_sess_cert_new();
1080 if (sc == NULL) goto err;
1082 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1083 s->session->sess_cert=sc;
1086 /* Inconsistency alert: cert_chain does include the peer's
1087 * certificate, which we don't include in s3_srvr.c */
1088 x=sk_X509_value(sk,0);
1090 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1092 pkey=X509_get_pubkey(x);
1094 /* VRS: allow null cert if auth == KRB5 */
1095 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1096 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1100 printf("pkey,x = %p, %p\n", pkey,x);
1101 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1102 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1103 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1104 #endif /* KSSL_DEBUG */
1106 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1110 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1111 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1115 i=ssl_cert_type(x,pkey);
1116 if (need_cert && i < 0)
1120 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1121 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1127 sc->peer_cert_type=i;
1128 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1129 /* Why would the following ever happen?
1130 * We just created sc a couple of lines ago. */
1131 if (sc->peer_pkeys[i].x509 != NULL)
1132 X509_free(sc->peer_pkeys[i].x509);
1133 sc->peer_pkeys[i].x509=x;
1134 sc->peer_key= &(sc->peer_pkeys[i]);
1136 if (s->session->peer != NULL)
1137 X509_free(s->session->peer);
1138 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1143 sc->peer_cert_type=i;
1146 if (s->session->peer != NULL)
1147 X509_free(s->session->peer);
1148 s->session->peer=NULL;
1150 s->session->verify_result = s->verify_result;
1158 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1161 EVP_PKEY_free(pkey);
1163 sk_X509_pop_free(sk,X509_free);
1167 int ssl3_get_key_exchange(SSL *s)
1169 #ifndef OPENSSL_NO_RSA
1170 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1173 unsigned char *param,*p;
1174 int al,i,j,param_len,ok;
1176 EVP_PKEY *pkey=NULL;
1177 #ifndef OPENSSL_NO_RSA
1180 #ifndef OPENSSL_NO_DH
1183 #ifndef OPENSSL_NO_ECDH
1184 EC_KEY *ecdh = NULL;
1185 BN_CTX *bn_ctx = NULL;
1186 EC_POINT *srvr_ecpoint = NULL;
1188 int encoded_pt_len = 0;
1191 /* use same message size as in ssl3_get_certificate_request()
1192 * as ServerKeyExchange message may be skipped */
1193 n=s->method->ssl_get_message(s,
1194 SSL3_ST_CR_KEY_EXCH_A,
1195 SSL3_ST_CR_KEY_EXCH_B,
1199 if (!ok) return((int)n);
1201 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1203 #ifndef OPENSSL_NO_PSK
1204 /* In plain PSK ciphersuite, ServerKeyExchange can be
1205 omitted if no identity hint is sent. Set
1206 session->sess_cert anyway to avoid problems
1208 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1210 s->session->sess_cert=ssl_sess_cert_new();
1211 if (s->ctx->psk_identity_hint)
1212 OPENSSL_free(s->ctx->psk_identity_hint);
1213 s->ctx->psk_identity_hint = NULL;
1216 s->s3->tmp.reuse_message=1;
1220 param=p=(unsigned char *)s->init_msg;
1221 if (s->session->sess_cert != NULL)
1223 #ifndef OPENSSL_NO_RSA
1224 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1226 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1227 s->session->sess_cert->peer_rsa_tmp=NULL;
1230 #ifndef OPENSSL_NO_DH
1231 if (s->session->sess_cert->peer_dh_tmp)
1233 DH_free(s->session->sess_cert->peer_dh_tmp);
1234 s->session->sess_cert->peer_dh_tmp=NULL;
1237 #ifndef OPENSSL_NO_ECDH
1238 if (s->session->sess_cert->peer_ecdh_tmp)
1240 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1241 s->session->sess_cert->peer_ecdh_tmp=NULL;
1247 s->session->sess_cert=ssl_sess_cert_new();
1251 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1252 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1253 EVP_MD_CTX_init(&md_ctx);
1255 #ifndef OPENSSL_NO_PSK
1256 if (alg_k & SSL_kPSK)
1258 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1260 al=SSL_AD_HANDSHAKE_FAILURE;
1263 /* Store PSK identity hint for later use, hint is used
1264 * in ssl3_send_client_key_exchange. Assume that the
1265 * maximum length of a PSK identity hint can be as
1266 * long as the maximum length of a PSK identity. */
1267 if (i > PSK_MAX_IDENTITY_LEN)
1269 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1270 SSL_R_DATA_LENGTH_TOO_LONG);
1275 al=SSL_AD_DECODE_ERROR;
1276 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1277 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1280 /* If received PSK identity hint contains NULL
1281 * characters, the hint is truncated from the first
1282 * NULL. p may not be ending with NULL, so create a
1283 * NULL-terminated string. */
1284 memcpy(tmp_id_hint, p, i);
1285 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1286 if (s->ctx->psk_identity_hint != NULL)
1287 OPENSSL_free(s->ctx->psk_identity_hint);
1288 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1289 if (s->ctx->psk_identity_hint == NULL)
1291 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1299 #endif /* !OPENSSL_NO_PSK */
1300 #ifndef OPENSSL_NO_RSA
1301 if (alg_k & SSL_kRSA)
1303 if ((rsa=RSA_new()) == NULL)
1305 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1312 al=SSL_AD_DECODE_ERROR;
1313 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1316 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1318 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1327 al=SSL_AD_DECODE_ERROR;
1328 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1331 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1333 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1339 /* this should be because we are using an export cipher */
1340 if (alg_a & SSL_aRSA)
1341 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1344 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1347 s->session->sess_cert->peer_rsa_tmp=rsa;
1350 #else /* OPENSSL_NO_RSA */
1354 #ifndef OPENSSL_NO_DH
1355 else if (alg_k & SSL_kEDH)
1357 if ((dh=DH_new()) == NULL)
1359 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1366 al=SSL_AD_DECODE_ERROR;
1367 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1370 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1372 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1381 al=SSL_AD_DECODE_ERROR;
1382 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1385 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1387 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1396 al=SSL_AD_DECODE_ERROR;
1397 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1400 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1402 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1408 #ifndef OPENSSL_NO_RSA
1409 if (alg_a & SSL_aRSA)
1410 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1415 #ifndef OPENSSL_NO_DSA
1416 else if (alg_a & SSL_aDSS)
1417 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1419 /* else anonymous DH, so no certificate or pkey. */
1421 s->session->sess_cert->peer_dh_tmp=dh;
1424 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1426 al=SSL_AD_ILLEGAL_PARAMETER;
1427 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1430 #endif /* !OPENSSL_NO_DH */
1432 #ifndef OPENSSL_NO_ECDH
1433 else if (alg_k & SSL_kEECDH)
1436 const EC_GROUP *group;
1438 if ((ecdh=EC_KEY_new()) == NULL)
1440 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1444 /* Extract elliptic curve parameters and the
1445 * server's ephemeral ECDH public key.
1446 * Keep accumulating lengths of various components in
1447 * param_len and make sure it never exceeds n.
1450 /* XXX: For now we only support named (not generic) curves
1451 * and the ECParameters in this case is just three bytes.
1454 if ((param_len > n) ||
1455 (*p != NAMED_CURVE_TYPE) ||
1456 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1458 al=SSL_AD_INTERNAL_ERROR;
1459 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1463 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1466 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1469 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1471 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1474 EC_GROUP_free(ngroup);
1476 group = EC_KEY_get0_group(ecdh);
1478 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1479 (EC_GROUP_get_degree(group) > 163))
1481 al=SSL_AD_EXPORT_RESTRICTION;
1482 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1488 /* Next, get the encoded ECPoint */
1489 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1490 ((bn_ctx = BN_CTX_new()) == NULL))
1492 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1496 encoded_pt_len = *p; /* length of encoded point */
1498 param_len += (1 + encoded_pt_len);
1499 if ((param_len > n) ||
1500 (EC_POINT_oct2point(group, srvr_ecpoint,
1501 p, encoded_pt_len, bn_ctx) == 0))
1503 al=SSL_AD_DECODE_ERROR;
1504 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1511 /* The ECC/TLS specification does not mention
1512 * the use of DSA to sign ECParameters in the server
1513 * key exchange message. We do support RSA and ECDSA.
1516 #ifndef OPENSSL_NO_RSA
1517 else if (alg_a & SSL_aRSA)
1518 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1520 #ifndef OPENSSL_NO_ECDSA
1521 else if (alg_a & SSL_aECDSA)
1522 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1524 /* else anonymous ECDH, so no certificate or pkey. */
1525 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1526 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1528 BN_CTX_free(bn_ctx);
1529 EC_POINT_free(srvr_ecpoint);
1530 srvr_ecpoint = NULL;
1534 al=SSL_AD_UNEXPECTED_MESSAGE;
1535 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1538 #endif /* !OPENSSL_NO_ECDH */
1541 /* p points to the next byte, there are 'n' bytes left */
1543 /* if it was signed, check the signature */
1548 j=EVP_PKEY_size(pkey);
1550 if ((i != n) || (n > j) || (n <= 0))
1552 /* wrong packet length */
1553 al=SSL_AD_DECODE_ERROR;
1554 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1558 #ifndef OPENSSL_NO_RSA
1559 if (pkey->type == EVP_PKEY_RSA)
1565 for (num=2; num > 0; num--)
1567 EVP_DigestInit_ex(&md_ctx,(num == 2)
1568 ?s->ctx->md5:s->ctx->sha1, NULL);
1569 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1570 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1571 EVP_DigestUpdate(&md_ctx,param,param_len);
1572 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1576 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1580 al=SSL_AD_DECRYPT_ERROR;
1581 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1587 al=SSL_AD_DECRYPT_ERROR;
1588 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1594 #ifndef OPENSSL_NO_DSA
1595 if (pkey->type == EVP_PKEY_DSA)
1598 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1599 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1600 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1601 EVP_VerifyUpdate(&md_ctx,param,param_len);
1602 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1605 al=SSL_AD_DECRYPT_ERROR;
1606 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1612 #ifndef OPENSSL_NO_ECDSA
1613 if (pkey->type == EVP_PKEY_EC)
1615 /* let's do ECDSA */
1616 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1617 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1618 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1619 EVP_VerifyUpdate(&md_ctx,param,param_len);
1620 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1623 al=SSL_AD_DECRYPT_ERROR;
1624 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1631 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1637 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1638 /* aNULL or kPSK do not need public keys */
1640 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1643 /* still data left over */
1646 al=SSL_AD_DECODE_ERROR;
1647 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1651 EVP_PKEY_free(pkey);
1652 EVP_MD_CTX_cleanup(&md_ctx);
1655 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1657 EVP_PKEY_free(pkey);
1658 #ifndef OPENSSL_NO_RSA
1662 #ifndef OPENSSL_NO_DH
1666 #ifndef OPENSSL_NO_ECDH
1667 BN_CTX_free(bn_ctx);
1668 EC_POINT_free(srvr_ecpoint);
1672 EVP_MD_CTX_cleanup(&md_ctx);
1676 int ssl3_get_certificate_request(SSL *s)
1679 unsigned long n,nc,l;
1680 unsigned int llen,ctype_num,i;
1682 const unsigned char *p,*q;
1684 STACK_OF(X509_NAME) *ca_sk=NULL;
1686 n=s->method->ssl_get_message(s,
1687 SSL3_ST_CR_CERT_REQ_A,
1688 SSL3_ST_CR_CERT_REQ_B,
1693 if (!ok) return((int)n);
1695 s->s3->tmp.cert_req=0;
1697 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1699 s->s3->tmp.reuse_message=1;
1703 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1705 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1706 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1710 /* TLS does not like anon-DH with client cert */
1711 if (s->version > SSL3_VERSION)
1713 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1715 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1716 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1721 p=d=(unsigned char *)s->init_msg;
1723 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1725 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1729 /* get the certificate types */
1731 if (ctype_num > SSL3_CT_NUMBER)
1732 ctype_num=SSL3_CT_NUMBER;
1733 for (i=0; i<ctype_num; i++)
1734 s->s3->tmp.ctype[i]= p[i];
1737 /* get the CA RDNs */
1742 out=fopen("/tmp/vsign.der","w");
1743 fwrite(p,1,llen,out);
1748 if ((llen+ctype_num+2+1) != n)
1750 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1751 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1755 for (nc=0; nc<llen; )
1758 if ((l+nc+2) > llen)
1760 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1761 goto cont; /* netscape bugs */
1762 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1763 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1769 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1771 /* If netscape tolerance is on, ignore errors */
1772 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1776 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1777 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1784 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1785 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1788 if (!sk_X509_NAME_push(ca_sk,xn))
1790 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1804 /* we should setup a certificate to return.... */
1805 s->s3->tmp.cert_req=1;
1806 s->s3->tmp.ctype_num=ctype_num;
1807 if (s->s3->tmp.ca_names != NULL)
1808 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1809 s->s3->tmp.ca_names=ca_sk;
1814 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1818 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1820 return(X509_NAME_cmp(*a,*b));
1822 #ifndef OPENSSL_NO_TLSEXT
1823 int ssl3_get_new_session_ticket(SSL *s)
1825 int ok,al,ret=0, ticklen;
1827 const unsigned char *p;
1830 n=s->method->ssl_get_message(s,
1831 SSL3_ST_CR_SESSION_TICKET_A,
1832 SSL3_ST_CR_SESSION_TICKET_B,
1840 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1842 s->s3->tmp.reuse_message=1;
1845 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1847 al=SSL_AD_UNEXPECTED_MESSAGE;
1848 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1853 /* need at least ticket_lifetime_hint + ticket length */
1854 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1855 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1859 p=d=(unsigned char *)s->init_msg;
1860 n2l(p, s->session->tlsext_tick_lifetime_hint);
1862 /* ticket_lifetime_hint + ticket_length + ticket */
1863 if (ticklen + 6 != n)
1865 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1866 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1869 if (s->session->tlsext_tick)
1871 OPENSSL_free(s->session->tlsext_tick);
1872 s->session->tlsext_ticklen = 0;
1874 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1875 if (!s->session->tlsext_tick)
1877 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1880 memcpy(s->session->tlsext_tick, p, ticklen);
1881 s->session->tlsext_ticklen = ticklen;
1882 /* There are two ways to detect a resumed ticket sesion.
1883 * One is to set an appropriate session ID and then the server
1884 * must return a match in ServerHello. This allows the normal
1885 * client session ID matching to work and we know much
1886 * earlier that the ticket has been accepted.
1888 * The other way is to set zero length session ID when the
1889 * ticket is presented and rely on the handshake to determine
1890 * session resumption.
1892 * We choose the former approach because this fits in with
1893 * assumptions elsewhere in OpenSSL. The session ID is set
1894 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
1897 EVP_Digest(p, ticklen,
1898 s->session->session_id, &s->session->session_id_length,
1899 #ifndef OPENSSL_NO_SHA256
1900 EVP_sha256(), NULL);
1907 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1912 int ssl3_get_cert_status(SSL *s)
1915 unsigned long resplen,n;
1916 const unsigned char *p;
1918 n=s->method->ssl_get_message(s,
1919 SSL3_ST_CR_CERT_STATUS_A,
1920 SSL3_ST_CR_CERT_STATUS_B,
1921 SSL3_MT_CERTIFICATE_STATUS,
1925 if (!ok) return((int)n);
1928 /* need at least status type + length */
1929 al = SSL_AD_DECODE_ERROR;
1930 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1933 p = (unsigned char *)s->init_msg;
1934 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1936 al = SSL_AD_DECODE_ERROR;
1937 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
1941 if (resplen + 4 != n)
1943 al = SSL_AD_DECODE_ERROR;
1944 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1947 if (s->tlsext_ocsp_resp)
1948 OPENSSL_free(s->tlsext_ocsp_resp);
1949 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1950 if (!s->tlsext_ocsp_resp)
1952 al = SSL_AD_INTERNAL_ERROR;
1953 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1956 s->tlsext_ocsp_resplen = resplen;
1957 if (s->ctx->tlsext_status_cb)
1960 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1963 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1964 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
1969 al = SSL_AD_INTERNAL_ERROR;
1970 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1976 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1981 int ssl3_get_server_done(SSL *s)
1986 n=s->method->ssl_get_message(s,
1987 SSL3_ST_CR_SRVR_DONE_A,
1988 SSL3_ST_CR_SRVR_DONE_B,
1989 SSL3_MT_SERVER_DONE,
1990 30, /* should be very small, like 0 :-) */
1993 if (!ok) return((int)n);
1996 /* should contain no data */
1997 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1998 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2006 int ssl3_send_client_key_exchange(SSL *s)
2008 unsigned char *p,*d;
2010 unsigned long alg_k;
2011 #ifndef OPENSSL_NO_RSA
2013 EVP_PKEY *pkey=NULL;
2015 #ifndef OPENSSL_NO_KRB5
2017 #endif /* OPENSSL_NO_KRB5 */
2018 #ifndef OPENSSL_NO_ECDH
2019 EC_KEY *clnt_ecdh = NULL;
2020 const EC_POINT *srvr_ecpoint = NULL;
2021 EVP_PKEY *srvr_pub_pkey = NULL;
2022 unsigned char *encodedPoint = NULL;
2023 int encoded_pt_len = 0;
2024 BN_CTX * bn_ctx = NULL;
2027 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2029 d=(unsigned char *)s->init_buf->data;
2032 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2034 /* Fool emacs indentation */
2036 #ifndef OPENSSL_NO_RSA
2037 else if (alg_k & SSL_kRSA)
2040 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2042 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2043 rsa=s->session->sess_cert->peer_rsa_tmp;
2046 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2047 if ((pkey == NULL) ||
2048 (pkey->type != EVP_PKEY_RSA) ||
2049 (pkey->pkey.rsa == NULL))
2051 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2055 EVP_PKEY_free(pkey);
2058 tmp_buf[0]=s->client_version>>8;
2059 tmp_buf[1]=s->client_version&0xff;
2060 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2063 s->session->master_key_length=sizeof tmp_buf;
2066 /* Fix buf for TLS and beyond */
2067 if (s->version > SSL3_VERSION)
2069 n=RSA_public_encrypt(sizeof tmp_buf,
2070 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2072 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2073 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2077 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2081 /* Fix buf for TLS and beyond */
2082 if (s->version > SSL3_VERSION)
2088 s->session->master_key_length=
2089 s->method->ssl3_enc->generate_master_secret(s,
2090 s->session->master_key,
2091 tmp_buf,sizeof tmp_buf);
2092 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2095 #ifndef OPENSSL_NO_KRB5
2096 else if (alg_k & SSL_kKRB5)
2098 krb5_error_code krb5rc;
2099 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2100 /* krb5_data krb5_ap_req; */
2101 krb5_data *enc_ticket;
2102 krb5_data authenticator, *authp = NULL;
2103 EVP_CIPHER_CTX ciph_ctx;
2104 const EVP_CIPHER *enc = NULL;
2105 unsigned char iv[EVP_MAX_IV_LENGTH];
2106 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2107 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2108 + EVP_MAX_IV_LENGTH];
2109 int padl, outl = sizeof(epms);
2111 EVP_CIPHER_CTX_init(&ciph_ctx);
2114 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2116 #endif /* KSSL_DEBUG */
2120 if (KRB5SENDAUTH) authp = &authenticator;
2121 #endif /* KRB5SENDAUTH */
2123 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2125 enc = kssl_map_enc(kssl_ctx->enctype);
2130 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2131 if (krb5rc && kssl_err.text)
2132 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2134 #endif /* KSSL_DEBUG */
2138 ssl3_send_alert(s,SSL3_AL_FATAL,
2139 SSL_AD_HANDSHAKE_FAILURE);
2140 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2145 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2146 ** in place of RFC 2712 KerberosWrapper, as in:
2148 ** Send ticket (copy to *p, set n = length)
2149 ** n = krb5_ap_req.length;
2150 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2151 ** if (krb5_ap_req.data)
2152 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2154 ** Now using real RFC 2712 KerberosWrapper
2155 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2156 ** Note: 2712 "opaque" types are here replaced
2157 ** with a 2-byte length followed by the value.
2159 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2160 ** Where "xx xx" = length bytes. Shown here with
2161 ** optional authenticator omitted.
2164 /* KerberosWrapper.Ticket */
2165 s2n(enc_ticket->length,p);
2166 memcpy(p, enc_ticket->data, enc_ticket->length);
2167 p+= enc_ticket->length;
2168 n = enc_ticket->length + 2;
2170 /* KerberosWrapper.Authenticator */
2171 if (authp && authp->length)
2173 s2n(authp->length,p);
2174 memcpy(p, authp->data, authp->length);
2176 n+= authp->length + 2;
2184 s2n(0,p);/* null authenticator length */
2188 tmp_buf[0]=s->client_version>>8;
2189 tmp_buf[1]=s->client_version&0xff;
2190 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2193 /* 20010420 VRS. Tried it this way; failed.
2194 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2195 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2196 ** kssl_ctx->length);
2197 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2200 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2201 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2203 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2205 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2207 if (outl > (int)sizeof epms)
2209 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2212 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2214 /* KerberosWrapper.EncryptedPreMasterSecret */
2216 memcpy(p, epms, outl);
2220 s->session->master_key_length=
2221 s->method->ssl3_enc->generate_master_secret(s,
2222 s->session->master_key,
2223 tmp_buf, sizeof tmp_buf);
2225 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2226 OPENSSL_cleanse(epms, outl);
2229 #ifndef OPENSSL_NO_DH
2230 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2232 DH *dh_srvr,*dh_clnt;
2234 if (s->session->sess_cert == NULL)
2236 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2237 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2241 if (s->session->sess_cert->peer_dh_tmp != NULL)
2242 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2245 /* we get them from the cert */
2246 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2247 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2251 /* generate a new random key */
2252 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2254 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2257 if (!DH_generate_key(dh_clnt))
2259 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2263 /* use the 'p' output buffer for the DH key, but
2264 * make sure to clear it out afterwards */
2266 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2270 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2274 /* generate master key from the result */
2275 s->session->master_key_length=
2276 s->method->ssl3_enc->generate_master_secret(s,
2277 s->session->master_key,p,n);
2281 /* send off the data */
2282 n=BN_num_bytes(dh_clnt->pub_key);
2284 BN_bn2bin(dh_clnt->pub_key,p);
2289 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2293 #ifndef OPENSSL_NO_ECDH
2294 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2296 const EC_GROUP *srvr_group = NULL;
2298 int ecdh_clnt_cert = 0;
2301 /* Did we send out the client's
2302 * ECDH share for use in premaster
2303 * computation as part of client certificate?
2304 * If so, set ecdh_clnt_cert to 1.
2306 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2308 /* XXX: For now, we do not support client
2309 * authentication using ECDH certificates.
2310 * To add such support, one needs to add
2311 * code that checks for appropriate
2312 * conditions and sets ecdh_clnt_cert to 1.
2313 * For example, the cert have an ECC
2314 * key on the same curve as the server's
2315 * and the key should be authorized for
2318 * One also needs to add code in ssl3_connect
2319 * to skip sending the certificate verify
2322 * if ((s->cert->key->privatekey != NULL) &&
2323 * (s->cert->key->privatekey->type ==
2324 * EVP_PKEY_EC) && ...)
2325 * ecdh_clnt_cert = 1;
2329 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2331 tkey = s->session->sess_cert->peer_ecdh_tmp;
2335 /* Get the Server Public Key from Cert */
2336 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2337 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2338 if ((srvr_pub_pkey == NULL) ||
2339 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2340 (srvr_pub_pkey->pkey.ec == NULL))
2342 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2343 ERR_R_INTERNAL_ERROR);
2347 tkey = srvr_pub_pkey->pkey.ec;
2350 srvr_group = EC_KEY_get0_group(tkey);
2351 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2353 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2355 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2356 ERR_R_INTERNAL_ERROR);
2360 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2362 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2366 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2368 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2373 /* Reuse key info from our certificate
2374 * We only need our private key to perform
2375 * the ECDH computation.
2377 const BIGNUM *priv_key;
2378 tkey = s->cert->key->privatekey->pkey.ec;
2379 priv_key = EC_KEY_get0_private_key(tkey);
2380 if (priv_key == NULL)
2382 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2385 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2387 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2393 /* Generate a new ECDH key pair */
2394 if (!(EC_KEY_generate_key(clnt_ecdh)))
2396 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2401 /* use the 'p' output buffer for the ECDH key, but
2402 * make sure to clear it out afterwards
2405 field_size = EC_GROUP_get_degree(srvr_group);
2406 if (field_size <= 0)
2408 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2412 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2415 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2420 /* generate master key from the result */
2421 s->session->master_key_length = s->method->ssl3_enc \
2422 -> generate_master_secret(s,
2423 s->session->master_key,
2426 memset(p, 0, n); /* clean up */
2430 /* Send empty client key exch message */
2435 /* First check the size of encoding and
2436 * allocate memory accordingly.
2439 EC_POINT_point2oct(srvr_group,
2440 EC_KEY_get0_public_key(clnt_ecdh),
2441 POINT_CONVERSION_UNCOMPRESSED,
2444 encodedPoint = (unsigned char *)
2445 OPENSSL_malloc(encoded_pt_len *
2446 sizeof(unsigned char));
2447 bn_ctx = BN_CTX_new();
2448 if ((encodedPoint == NULL) ||
2451 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2455 /* Encode the public key */
2456 n = EC_POINT_point2oct(srvr_group,
2457 EC_KEY_get0_public_key(clnt_ecdh),
2458 POINT_CONVERSION_UNCOMPRESSED,
2459 encodedPoint, encoded_pt_len, bn_ctx);
2461 *p = n; /* length of encoded point */
2462 /* Encoded point will be copied here */
2464 /* copy the point */
2465 memcpy((unsigned char *)p, encodedPoint, n);
2466 /* increment n to account for length field */
2470 /* Free allocated memory */
2471 BN_CTX_free(bn_ctx);
2472 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2473 if (clnt_ecdh != NULL)
2474 EC_KEY_free(clnt_ecdh);
2475 EVP_PKEY_free(srvr_pub_pkey);
2477 #endif /* !OPENSSL_NO_ECDH */
2478 else if (alg_k & SSL_kGOST)
2480 /* GOST key exchange message creation */
2481 EVP_PKEY_CTX *pkey_ctx;
2484 unsigned int md_len;
2486 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2487 EVP_MD_CTX *ukm_hash;
2490 /* Get server sertificate PKEY and create ctx from it */
2491 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2493 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2495 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2499 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2500 /* If we have send a certificate, and certificate key
2502 * parameters match those of server certificate, use
2503 * certificate key for key exchange
2506 /* Otherwise, generate ephemeral key pair */
2508 EVP_PKEY_encrypt_init(pkey_ctx);
2509 /* Generate session key */
2510 RAND_bytes(premaster_secret,32);
2511 /* If we have client certificate, use its secret as peer key */
2512 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2513 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2514 /* If there was an error - just ignore it. Ephemeral key
2520 /* Compute shared IV and store it in algorithm-specific
2522 ukm_hash = EVP_MD_CTX_create();
2523 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2524 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2525 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2526 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2527 EVP_MD_CTX_destroy(ukm_hash);
2528 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2530 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2534 /* Make GOST keytransport blob message */
2535 /*Encapsulate it into sequence */
2536 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2538 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2539 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2546 *(p++)= msglen & 0xff;
2551 *(p++)= msglen & 0xff;
2554 memcpy(p, tmp, msglen);
2555 /* Check if pubkey from client certificate was used */
2556 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2558 /* Set flag "skip certificate verify" */
2559 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2561 EVP_PKEY_CTX_free(pkey_ctx);
2562 s->session->master_key_length=
2563 s->method->ssl3_enc->generate_master_secret(s,
2564 s->session->master_key,premaster_secret,32);
2565 EVP_PKEY_free(pub_key);
2568 #ifndef OPENSSL_NO_PSK
2569 else if (alg_k & SSL_kPSK)
2571 char identity[PSK_MAX_IDENTITY_LEN];
2572 unsigned char *t = NULL;
2573 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2574 unsigned int pre_ms_len = 0, psk_len = 0;
2578 if (s->psk_client_callback == NULL)
2580 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2581 SSL_R_PSK_NO_CLIENT_CB);
2585 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2586 identity, PSK_MAX_IDENTITY_LEN,
2587 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2588 if (psk_len > PSK_MAX_PSK_LEN)
2590 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2591 ERR_R_INTERNAL_ERROR);
2594 else if (psk_len == 0)
2596 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2597 SSL_R_PSK_IDENTITY_NOT_FOUND);
2601 /* create PSK pre_master_secret */
2602 pre_ms_len = 2+psk_len+2+psk_len;
2604 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2606 memset(t, 0, psk_len);
2610 if (s->session->psk_identity_hint != NULL)
2611 OPENSSL_free(s->session->psk_identity_hint);
2612 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2613 if (s->ctx->psk_identity_hint != NULL &&
2614 s->session->psk_identity_hint == NULL)
2616 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2617 ERR_R_MALLOC_FAILURE);
2621 if (s->session->psk_identity != NULL)
2622 OPENSSL_free(s->session->psk_identity);
2623 s->session->psk_identity = BUF_strdup(identity);
2624 if (s->session->psk_identity == NULL)
2626 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2627 ERR_R_MALLOC_FAILURE);
2631 s->session->master_key_length =
2632 s->method->ssl3_enc->generate_master_secret(s,
2633 s->session->master_key,
2634 psk_or_pre_ms, pre_ms_len);
2635 n = strlen(identity);
2637 memcpy(p, identity, n);
2641 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2642 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2645 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2652 ssl3_send_alert(s, SSL3_AL_FATAL,
2653 SSL_AD_HANDSHAKE_FAILURE);
2654 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2655 ERR_R_INTERNAL_ERROR);
2659 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2662 s->state=SSL3_ST_CW_KEY_EXCH_B;
2663 /* number of bytes to write */
2668 /* SSL3_ST_CW_KEY_EXCH_B */
2669 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2671 #ifndef OPENSSL_NO_ECDH
2672 BN_CTX_free(bn_ctx);
2673 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2674 if (clnt_ecdh != NULL)
2675 EC_KEY_free(clnt_ecdh);
2676 EVP_PKEY_free(srvr_pub_pkey);
2681 int ssl3_send_client_verify(SSL *s)
2683 unsigned char *p,*d;
2684 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2686 EVP_PKEY_CTX *pctx=NULL;
2687 #ifndef OPENSSL_NO_RSA
2693 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2695 d=(unsigned char *)s->init_buf->data;
2697 pkey=s->cert->key->privatekey;
2698 /* Create context from key and test if sha1 is allowed as digest */
2699 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2700 EVP_PKEY_sign_init(pctx);
2701 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2703 s->method->ssl3_enc->cert_verify_mac(s,
2705 &(data[MD5_DIGEST_LENGTH]));
2711 #ifndef OPENSSL_NO_RSA
2712 if (pkey->type == EVP_PKEY_RSA)
2714 s->method->ssl3_enc->cert_verify_mac(s,
2717 if (RSA_sign(NID_md5_sha1, data,
2718 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2719 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2721 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2729 #ifndef OPENSSL_NO_DSA
2730 if (pkey->type == EVP_PKEY_DSA)
2732 if (!DSA_sign(pkey->save_type,
2733 &(data[MD5_DIGEST_LENGTH]),
2734 SHA_DIGEST_LENGTH,&(p[2]),
2735 (unsigned int *)&j,pkey->pkey.dsa))
2737 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2745 #ifndef OPENSSL_NO_ECDSA
2746 if (pkey->type == EVP_PKEY_EC)
2748 if (!ECDSA_sign(pkey->save_type,
2749 &(data[MD5_DIGEST_LENGTH]),
2750 SHA_DIGEST_LENGTH,&(p[2]),
2751 (unsigned int *)&j,pkey->pkey.ec))
2753 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2762 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
2764 unsigned char signbuf[64];
2767 s->method->ssl3_enc->cert_verify_mac(s,
2768 NID_id_GostR3411_94,
2770 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
2771 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2772 ERR_R_INTERNAL_ERROR);
2775 for (i=63,j=0; i>=0; j++, i--) {
2783 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2786 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2789 s->state=SSL3_ST_CW_CERT_VRFY_B;
2790 s->init_num=(int)n+4;
2793 EVP_PKEY_CTX_free(pctx);
2794 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2796 EVP_PKEY_CTX_free(pctx);
2800 int ssl3_send_client_certificate(SSL *s)
2803 EVP_PKEY *pkey=NULL;
2807 if (s->state == SSL3_ST_CW_CERT_A)
2809 if ((s->cert == NULL) ||
2810 (s->cert->key->x509 == NULL) ||
2811 (s->cert->key->privatekey == NULL))
2812 s->state=SSL3_ST_CW_CERT_B;
2814 s->state=SSL3_ST_CW_CERT_C;
2817 /* We need to get a client cert */
2818 if (s->state == SSL3_ST_CW_CERT_B)
2820 /* If we get an error, we need to
2821 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2822 * We then get retied later */
2824 i = ssl_do_client_cert_cb(s, &x509, &pkey);
2827 s->rwstate=SSL_X509_LOOKUP;
2830 s->rwstate=SSL_NOTHING;
2831 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2833 s->state=SSL3_ST_CW_CERT_B;
2834 if ( !SSL_use_certificate(s,x509) ||
2835 !SSL_use_PrivateKey(s,pkey))
2841 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2844 if (x509 != NULL) X509_free(x509);
2845 if (pkey != NULL) EVP_PKEY_free(pkey);
2848 if (s->version == SSL3_VERSION)
2850 s->s3->tmp.cert_req=0;
2851 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2856 s->s3->tmp.cert_req=2;
2860 /* Ok, we have a cert */
2861 s->state=SSL3_ST_CW_CERT_C;
2864 if (s->state == SSL3_ST_CW_CERT_C)
2866 s->state=SSL3_ST_CW_CERT_D;
2867 l=ssl3_output_cert_chain(s,
2868 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2872 /* SSL3_ST_CW_CERT_D */
2873 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2876 #define has_bits(i,m) (((i)&(m)) == (m))
2878 int ssl3_check_cert_and_algorithm(SSL *s)
2882 EVP_PKEY *pkey=NULL;
2884 #ifndef OPENSSL_NO_RSA
2887 #ifndef OPENSSL_NO_DH
2891 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2892 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
2894 /* we don't have a certificate */
2895 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
2898 sc=s->session->sess_cert;
2901 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2905 #ifndef OPENSSL_NO_RSA
2906 rsa=s->session->sess_cert->peer_rsa_tmp;
2908 #ifndef OPENSSL_NO_DH
2909 dh=s->session->sess_cert->peer_dh_tmp;
2912 /* This is the passed certificate */
2914 idx=sc->peer_cert_type;
2915 #ifndef OPENSSL_NO_ECDH
2916 if (idx == SSL_PKEY_ECC)
2918 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2919 s->s3->tmp.new_cipher) == 0)
2920 { /* check failed */
2921 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2930 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2931 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2932 EVP_PKEY_free(pkey);
2935 /* Check that we have a certificate if we require one */
2936 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2938 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2941 #ifndef OPENSSL_NO_DSA
2942 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2944 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2948 #ifndef OPENSSL_NO_RSA
2949 if ((alg_k & SSL_kRSA) &&
2950 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2952 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2956 #ifndef OPENSSL_NO_DH
2957 if ((alg_k & SSL_kEDH) &&
2958 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2960 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2963 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2965 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2968 #ifndef OPENSSL_NO_DSA
2969 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2971 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2977 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2979 #ifndef OPENSSL_NO_RSA
2980 if (alg_k & SSL_kRSA)
2983 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2985 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2991 #ifndef OPENSSL_NO_DH
2992 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2995 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2997 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3004 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3010 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3015 /* Check to see if handshake is full or resumed. Usually this is just a
3016 * case of checking to see if a cache hit has occurred. In the case of
3017 * session tickets we have to check the next message to be sure.
3020 #ifndef OPENSSL_NO_TLSEXT
3021 # ifndef OPENSSL_NO_NPN
3022 int ssl3_send_next_proto(SSL *s)
3024 unsigned int len, padding_len;
3027 if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
3029 len = s->next_proto_negotiated_len;
3030 padding_len = 32 - ((len + 2) % 32);
3031 d = (unsigned char *)s->init_buf->data;
3033 memcpy(d + 5, s->next_proto_negotiated, len);
3034 d[5 + len] = padding_len;
3035 memset(d + 6 + len, 0, padding_len);
3036 *(d++)=SSL3_MT_NEXT_PROTO;
3037 l2n3(2 + len + padding_len, d);
3038 s->state = SSL3_ST_CW_NEXT_PROTO_B;
3039 s->init_num = 4 + 2 + len + padding_len;
3043 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3047 int ssl3_check_finished(SSL *s)
3051 /* If we have no ticket it cannot be a resumed session. */
3052 if (!s->session->tlsext_tick)
3054 /* this function is called when we really expect a Certificate
3055 * message, so permit appropriate message length */
3056 n=s->method->ssl_get_message(s,
3062 if (!ok) return((int)n);
3063 s->s3->tmp.reuse_message = 1;
3064 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3065 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3072 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3075 #ifndef OPENSSL_NO_ENGINE
3076 if (s->ctx->client_cert_engine)
3078 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3079 SSL_get_client_CA_list(s),
3080 px509, ppkey, NULL, NULL, NULL);
3085 if (s->ctx->client_cert_cb)
3086 i = s->ctx->client_cert_cb(s,px509,ppkey);