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 *(p++)=s->version>>8;
693 *(p++)=s->version&0xff;
694 s->client_version=s->version;
697 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
704 i=s->session->session_id_length;
708 if (i > (int)sizeof(s->session->session_id))
710 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
713 memcpy(p,s->session->session_id,i);
717 /* Ciphers supported */
718 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
721 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
728 #ifdef OPENSSL_NO_COMP
732 if ((s->options & SSL_OP_NO_COMPRESSION)
733 || !s->ctx->comp_methods)
736 j=sk_SSL_COMP_num(s->ctx->comp_methods);
740 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
744 *(p++)=0; /* Add the NULL method */
746 #ifndef OPENSSL_NO_TLSEXT
748 if (ssl_prepare_clienthello_tlsext(s) <= 0)
750 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
753 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
755 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
762 *(d++)=SSL3_MT_CLIENT_HELLO;
765 s->state=SSL3_ST_CW_CLNT_HELLO_B;
766 /* number of bytes to write */
771 /* SSL3_ST_CW_CLNT_HELLO_B */
772 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
777 int ssl3_get_server_hello(SSL *s)
779 STACK_OF(SSL_CIPHER) *sk;
785 #ifndef OPENSSL_NO_COMP
789 n=s->method->ssl_get_message(s,
790 SSL3_ST_CR_SRVR_HELLO_A,
791 SSL3_ST_CR_SRVR_HELLO_B,
796 if (!ok) return((int)n);
798 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
800 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
802 if ( s->d1->send_cookie == 0)
804 s->s3->tmp.reuse_message = 1;
807 else /* already sent a cookie */
809 al=SSL_AD_UNEXPECTED_MESSAGE;
810 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
816 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
818 al=SSL_AD_UNEXPECTED_MESSAGE;
819 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
823 d=p=(unsigned char *)s->init_msg;
825 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
827 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
828 s->version=(s->version&0xff00)|p[1];
829 al=SSL_AD_PROTOCOL_VERSION;
834 /* load the server hello data */
835 /* load the server random */
836 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
839 /* get the session-id */
842 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
844 al=SSL_AD_ILLEGAL_PARAMETER;
845 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
849 #ifndef OPENSSL_NO_TLSEXT
850 /* check if we want to resume the session based on external pre-shared secret */
851 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
853 SSL_CIPHER *pref_cipher=NULL;
854 s->session->master_key_length=sizeof(s->session->master_key);
855 if (s->tls_session_secret_cb(s, s->session->master_key,
856 &s->session->master_key_length,
858 s->tls_session_secret_cb_arg))
860 s->session->cipher = pref_cipher ?
861 pref_cipher : ssl_get_cipher_by_char(s, p+j);
864 #endif /* OPENSSL_NO_TLSEXT */
866 if (j != 0 && j == s->session->session_id_length
867 && memcmp(p,s->session->session_id,j) == 0)
869 if(s->sid_ctx_length != s->session->sid_ctx_length
870 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
872 /* actually a client application bug */
873 al=SSL_AD_ILLEGAL_PARAMETER;
874 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
879 else /* a miss or crap from the other end */
881 /* If we were trying for session-id reuse, make a new
882 * SSL_SESSION so we don't stuff up other people */
884 if (s->session->session_id_length > 0)
886 if (!ssl_get_new_session(s,0))
888 al=SSL_AD_INTERNAL_ERROR;
892 s->session->session_id_length=j;
893 memcpy(s->session->session_id,p,j); /* j could be 0 */
896 c=ssl_get_cipher_by_char(s,p);
900 al=SSL_AD_ILLEGAL_PARAMETER;
901 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
904 /* TLS v1.2 only ciphersuites require v1.2 or later */
905 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
906 (TLS1_get_version(s) < TLS1_2_VERSION))
908 al=SSL_AD_ILLEGAL_PARAMETER;
909 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
912 p+=ssl_put_cipher_by_char(s,NULL,NULL);
914 sk=ssl_get_ciphers_by_id(s);
915 i=sk_SSL_CIPHER_find(sk,c);
918 /* we did not say we would use this cipher */
919 al=SSL_AD_ILLEGAL_PARAMETER;
920 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
924 /* Depending on the session caching (internal/external), the cipher
925 and/or cipher_id values may not be set. Make sure that
926 cipher_id is set and use it for comparison. */
927 if (s->session->cipher)
928 s->session->cipher_id = s->session->cipher->id;
929 if (s->hit && (s->session->cipher_id != c->id))
931 /* Workaround is now obsolete */
934 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
937 al=SSL_AD_ILLEGAL_PARAMETER;
938 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
942 s->s3->tmp.new_cipher=c;
943 /* Don't digest cached records if TLS v1.2: we may need them for
944 * client authentication.
946 if (TLS1_get_version(s) < TLS1_2_VERSION && !ssl3_digest_cached_records(s))
948 /* lets get the compression algorithm */
950 #ifdef OPENSSL_NO_COMP
953 al=SSL_AD_ILLEGAL_PARAMETER;
954 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
957 /* If compression is disabled we'd better not try to resume a session
960 if (s->session->compress_meth != 0)
962 al=SSL_AD_INTERNAL_ERROR;
963 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
968 if (s->hit && j != s->session->compress_meth)
970 al=SSL_AD_ILLEGAL_PARAMETER;
971 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
976 else if (s->options & SSL_OP_NO_COMPRESSION)
978 al=SSL_AD_ILLEGAL_PARAMETER;
979 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
983 comp=ssl3_comp_find(s->ctx->comp_methods,j);
985 if ((j != 0) && (comp == NULL))
987 al=SSL_AD_ILLEGAL_PARAMETER;
988 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
993 s->s3->tmp.new_compression=comp;
997 #ifndef OPENSSL_NO_TLSEXT
999 if (s->version >= SSL3_VERSION)
1001 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
1003 /* 'al' set by ssl_parse_serverhello_tlsext */
1004 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
1007 if (ssl_check_serverhello_tlsext(s) <= 0)
1009 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
1017 /* wrong packet length */
1018 al=SSL_AD_DECODE_ERROR;
1019 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
1025 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1030 int ssl3_get_server_certificate(SSL *s)
1032 int al,i,ok,ret= -1;
1033 unsigned long n,nc,llen,l;
1035 const unsigned char *q,*p;
1037 STACK_OF(X509) *sk=NULL;
1039 EVP_PKEY *pkey=NULL;
1040 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1042 n=s->method->ssl_get_message(s,
1049 if (!ok) return((int)n);
1051 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1052 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1053 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1055 s->s3->tmp.reuse_message=1;
1059 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1061 al=SSL_AD_UNEXPECTED_MESSAGE;
1062 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1065 p=d=(unsigned char *)s->init_msg;
1067 if ((sk=sk_X509_new_null()) == NULL)
1069 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1076 al=SSL_AD_DECODE_ERROR;
1077 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1080 for (nc=0; nc<llen; )
1083 if ((l+nc+3) > llen)
1085 al=SSL_AD_DECODE_ERROR;
1086 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1091 x=d2i_X509(NULL,&q,l);
1094 al=SSL_AD_BAD_CERTIFICATE;
1095 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1100 al=SSL_AD_DECODE_ERROR;
1101 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1104 if (!sk_X509_push(sk,x))
1106 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1114 i=ssl_verify_cert_chain(s,sk);
1115 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1116 #ifndef OPENSSL_NO_KRB5
1117 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1118 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1119 #endif /* OPENSSL_NO_KRB5 */
1122 al=ssl_verify_alarm_type(s->verify_result);
1123 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1126 ERR_clear_error(); /* but we keep s->verify_result */
1128 sc=ssl_sess_cert_new();
1129 if (sc == NULL) goto err;
1131 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1132 s->session->sess_cert=sc;
1135 /* Inconsistency alert: cert_chain does include the peer's
1136 * certificate, which we don't include in s3_srvr.c */
1137 x=sk_X509_value(sk,0);
1139 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1141 pkey=X509_get_pubkey(x);
1143 /* VRS: allow null cert if auth == KRB5 */
1144 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1145 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1149 printf("pkey,x = %p, %p\n", pkey,x);
1150 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1151 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1152 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1153 #endif /* KSSL_DEBUG */
1155 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1159 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1160 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1164 i=ssl_cert_type(x,pkey);
1165 if (need_cert && i < 0)
1169 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1170 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1176 sc->peer_cert_type=i;
1177 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1178 /* Why would the following ever happen?
1179 * We just created sc a couple of lines ago. */
1180 if (sc->peer_pkeys[i].x509 != NULL)
1181 X509_free(sc->peer_pkeys[i].x509);
1182 sc->peer_pkeys[i].x509=x;
1183 sc->peer_key= &(sc->peer_pkeys[i]);
1185 if (s->session->peer != NULL)
1186 X509_free(s->session->peer);
1187 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1192 sc->peer_cert_type=i;
1195 if (s->session->peer != NULL)
1196 X509_free(s->session->peer);
1197 s->session->peer=NULL;
1199 s->session->verify_result = s->verify_result;
1207 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1210 EVP_PKEY_free(pkey);
1212 sk_X509_pop_free(sk,X509_free);
1216 int ssl3_get_key_exchange(SSL *s)
1218 #ifndef OPENSSL_NO_RSA
1219 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1222 unsigned char *param,*p;
1223 int al,i,j,param_len,ok;
1225 EVP_PKEY *pkey=NULL;
1226 const EVP_MD *md = NULL;
1227 #ifndef OPENSSL_NO_RSA
1230 #ifndef OPENSSL_NO_DH
1233 #ifndef OPENSSL_NO_ECDH
1234 EC_KEY *ecdh = NULL;
1235 BN_CTX *bn_ctx = NULL;
1236 EC_POINT *srvr_ecpoint = NULL;
1238 int encoded_pt_len = 0;
1241 /* use same message size as in ssl3_get_certificate_request()
1242 * as ServerKeyExchange message may be skipped */
1243 n=s->method->ssl_get_message(s,
1244 SSL3_ST_CR_KEY_EXCH_A,
1245 SSL3_ST_CR_KEY_EXCH_B,
1249 if (!ok) return((int)n);
1251 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1253 #ifndef OPENSSL_NO_PSK
1254 /* In plain PSK ciphersuite, ServerKeyExchange can be
1255 omitted if no identity hint is sent. Set
1256 session->sess_cert anyway to avoid problems
1258 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1260 s->session->sess_cert=ssl_sess_cert_new();
1261 if (s->ctx->psk_identity_hint)
1262 OPENSSL_free(s->ctx->psk_identity_hint);
1263 s->ctx->psk_identity_hint = NULL;
1266 s->s3->tmp.reuse_message=1;
1270 param=p=(unsigned char *)s->init_msg;
1271 if (s->session->sess_cert != NULL)
1273 #ifndef OPENSSL_NO_RSA
1274 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1276 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1277 s->session->sess_cert->peer_rsa_tmp=NULL;
1280 #ifndef OPENSSL_NO_DH
1281 if (s->session->sess_cert->peer_dh_tmp)
1283 DH_free(s->session->sess_cert->peer_dh_tmp);
1284 s->session->sess_cert->peer_dh_tmp=NULL;
1287 #ifndef OPENSSL_NO_ECDH
1288 if (s->session->sess_cert->peer_ecdh_tmp)
1290 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1291 s->session->sess_cert->peer_ecdh_tmp=NULL;
1297 s->session->sess_cert=ssl_sess_cert_new();
1301 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1302 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1303 EVP_MD_CTX_init(&md_ctx);
1305 #ifndef OPENSSL_NO_PSK
1306 if (alg_k & SSL_kPSK)
1308 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1310 al=SSL_AD_HANDSHAKE_FAILURE;
1313 /* Store PSK identity hint for later use, hint is used
1314 * in ssl3_send_client_key_exchange. Assume that the
1315 * maximum length of a PSK identity hint can be as
1316 * long as the maximum length of a PSK identity. */
1317 if (i > PSK_MAX_IDENTITY_LEN)
1319 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1320 SSL_R_DATA_LENGTH_TOO_LONG);
1325 al=SSL_AD_DECODE_ERROR;
1326 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1327 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1330 /* If received PSK identity hint contains NULL
1331 * characters, the hint is truncated from the first
1332 * NULL. p may not be ending with NULL, so create a
1333 * NULL-terminated string. */
1334 memcpy(tmp_id_hint, p, i);
1335 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1336 if (s->ctx->psk_identity_hint != NULL)
1337 OPENSSL_free(s->ctx->psk_identity_hint);
1338 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1339 if (s->ctx->psk_identity_hint == NULL)
1341 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1349 #endif /* !OPENSSL_NO_PSK */
1350 #ifndef OPENSSL_NO_SRP
1351 if (alg_k & SSL_kSRP)
1357 al=SSL_AD_DECODE_ERROR;
1358 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1361 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1363 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1372 al=SSL_AD_DECODE_ERROR;
1373 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1376 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1378 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1383 i = (unsigned int)(p[0]);
1388 al=SSL_AD_DECODE_ERROR;
1389 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1392 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1394 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1403 al=SSL_AD_DECODE_ERROR;
1404 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1407 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1409 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1415 /* We must check if there is a certificate */
1416 #ifndef OPENSSL_NO_RSA
1417 if (alg_a & SSL_aRSA)
1418 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1423 #ifndef OPENSSL_NO_DSA
1424 else if (alg_a & SSL_aDSS)
1425 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1429 #endif /* !OPENSSL_NO_SRP */
1430 #ifndef OPENSSL_NO_RSA
1431 if (alg_k & SSL_kRSA)
1433 if ((rsa=RSA_new()) == NULL)
1435 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1442 al=SSL_AD_DECODE_ERROR;
1443 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1446 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1448 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1457 al=SSL_AD_DECODE_ERROR;
1458 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1461 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1463 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1469 /* this should be because we are using an export cipher */
1470 if (alg_a & SSL_aRSA)
1471 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1474 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1477 s->session->sess_cert->peer_rsa_tmp=rsa;
1480 #else /* OPENSSL_NO_RSA */
1484 #ifndef OPENSSL_NO_DH
1485 else if (alg_k & SSL_kEDH)
1487 if ((dh=DH_new()) == NULL)
1489 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1496 al=SSL_AD_DECODE_ERROR;
1497 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1500 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1502 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1511 al=SSL_AD_DECODE_ERROR;
1512 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1515 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1517 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1526 al=SSL_AD_DECODE_ERROR;
1527 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1530 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1532 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1538 #ifndef OPENSSL_NO_RSA
1539 if (alg_a & SSL_aRSA)
1540 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1545 #ifndef OPENSSL_NO_DSA
1546 else if (alg_a & SSL_aDSS)
1547 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1549 /* else anonymous DH, so no certificate or pkey. */
1551 s->session->sess_cert->peer_dh_tmp=dh;
1554 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1556 al=SSL_AD_ILLEGAL_PARAMETER;
1557 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1560 #endif /* !OPENSSL_NO_DH */
1562 #ifndef OPENSSL_NO_ECDH
1563 else if (alg_k & SSL_kEECDH)
1566 const EC_GROUP *group;
1568 if ((ecdh=EC_KEY_new()) == NULL)
1570 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1574 /* Extract elliptic curve parameters and the
1575 * server's ephemeral ECDH public key.
1576 * Keep accumulating lengths of various components in
1577 * param_len and make sure it never exceeds n.
1580 /* XXX: For now we only support named (not generic) curves
1581 * and the ECParameters in this case is just three bytes.
1584 if ((param_len > n) ||
1585 (*p != NAMED_CURVE_TYPE) ||
1586 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1588 al=SSL_AD_INTERNAL_ERROR;
1589 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1593 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1596 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1599 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1601 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1604 EC_GROUP_free(ngroup);
1606 group = EC_KEY_get0_group(ecdh);
1608 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1609 (EC_GROUP_get_degree(group) > 163))
1611 al=SSL_AD_EXPORT_RESTRICTION;
1612 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1618 /* Next, get the encoded ECPoint */
1619 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1620 ((bn_ctx = BN_CTX_new()) == NULL))
1622 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1626 encoded_pt_len = *p; /* length of encoded point */
1628 param_len += (1 + encoded_pt_len);
1629 if ((param_len > n) ||
1630 (EC_POINT_oct2point(group, srvr_ecpoint,
1631 p, encoded_pt_len, bn_ctx) == 0))
1633 al=SSL_AD_DECODE_ERROR;
1634 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1641 /* The ECC/TLS specification does not mention
1642 * the use of DSA to sign ECParameters in the server
1643 * key exchange message. We do support RSA and ECDSA.
1646 #ifndef OPENSSL_NO_RSA
1647 else if (alg_a & SSL_aRSA)
1648 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1650 #ifndef OPENSSL_NO_ECDSA
1651 else if (alg_a & SSL_aECDSA)
1652 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1654 /* else anonymous ECDH, so no certificate or pkey. */
1655 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1656 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1658 BN_CTX_free(bn_ctx);
1660 EC_POINT_free(srvr_ecpoint);
1661 srvr_ecpoint = NULL;
1665 al=SSL_AD_UNEXPECTED_MESSAGE;
1666 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1669 #endif /* !OPENSSL_NO_ECDH */
1672 /* p points to the next byte, there are 'n' bytes left */
1674 /* if it was signed, check the signature */
1677 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1679 int sigalg = tls12_get_sigid(pkey);
1680 /* Should never happen */
1683 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1686 /* Check key type is consistent with signature */
1687 if (sigalg != (int)p[1])
1689 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE);
1690 al=SSL_AD_DECODE_ERROR;
1693 md = tls12_get_hash(p[0]);
1696 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
1697 al=SSL_AD_DECODE_ERROR;
1701 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1711 j=EVP_PKEY_size(pkey);
1713 if ((i != n) || (n > j) || (n <= 0))
1715 /* wrong packet length */
1716 al=SSL_AD_DECODE_ERROR;
1717 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1721 #ifndef OPENSSL_NO_RSA
1722 if (pkey->type == EVP_PKEY_RSA && TLS1_get_version(s) < TLS1_2_VERSION)
1728 for (num=2; num > 0; num--)
1730 EVP_MD_CTX_set_flags(&md_ctx,
1731 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1732 EVP_DigestInit_ex(&md_ctx,(num == 2)
1733 ?s->ctx->md5:s->ctx->sha1, NULL);
1734 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1735 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1736 EVP_DigestUpdate(&md_ctx,param,param_len);
1737 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1741 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1745 al=SSL_AD_DECRYPT_ERROR;
1746 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1752 al=SSL_AD_DECRYPT_ERROR;
1753 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1760 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1761 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1762 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1763 EVP_VerifyUpdate(&md_ctx,param,param_len);
1764 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1767 al=SSL_AD_DECRYPT_ERROR;
1768 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1775 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1776 /* aNULL or kPSK do not need public keys */
1778 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1781 /* still data left over */
1784 al=SSL_AD_DECODE_ERROR;
1785 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1789 EVP_PKEY_free(pkey);
1790 EVP_MD_CTX_cleanup(&md_ctx);
1793 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1795 EVP_PKEY_free(pkey);
1796 #ifndef OPENSSL_NO_RSA
1800 #ifndef OPENSSL_NO_DH
1804 #ifndef OPENSSL_NO_ECDH
1805 BN_CTX_free(bn_ctx);
1806 EC_POINT_free(srvr_ecpoint);
1810 EVP_MD_CTX_cleanup(&md_ctx);
1814 int ssl3_get_certificate_request(SSL *s)
1817 unsigned long n,nc,l;
1818 unsigned int llen, ctype_num,i;
1820 const unsigned char *p,*q;
1822 STACK_OF(X509_NAME) *ca_sk=NULL;
1824 n=s->method->ssl_get_message(s,
1825 SSL3_ST_CR_CERT_REQ_A,
1826 SSL3_ST_CR_CERT_REQ_B,
1831 if (!ok) return((int)n);
1833 s->s3->tmp.cert_req=0;
1835 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1837 s->s3->tmp.reuse_message=1;
1838 /* If we get here we don't need any cached handshake records
1839 * as we wont be doing client auth.
1841 if (s->s3->handshake_buffer)
1843 if (!ssl3_digest_cached_records(s))
1849 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1851 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1852 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1856 /* TLS does not like anon-DH with client cert */
1857 if (s->version > SSL3_VERSION)
1859 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1861 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1862 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1867 p=d=(unsigned char *)s->init_msg;
1869 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1871 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1875 /* get the certificate types */
1877 if (ctype_num > SSL3_CT_NUMBER)
1878 ctype_num=SSL3_CT_NUMBER;
1879 for (i=0; i<ctype_num; i++)
1880 s->s3->tmp.ctype[i]= p[i];
1882 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1885 /* Check we have enough room for signature algorithms and
1886 * following length value.
1888 if ((unsigned long)(p - d + llen + 2) > n)
1890 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1891 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
1894 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
1896 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1897 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
1903 /* get the CA RDNs */
1908 out=fopen("/tmp/vsign.der","w");
1909 fwrite(p,1,llen,out);
1914 if ((unsigned long)(p - d + llen) != n)
1916 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1917 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1921 for (nc=0; nc<llen; )
1924 if ((l+nc+2) > llen)
1926 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1927 goto cont; /* netscape bugs */
1928 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1929 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1935 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1937 /* If netscape tolerance is on, ignore errors */
1938 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1942 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1943 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1950 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1951 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1954 if (!sk_X509_NAME_push(ca_sk,xn))
1956 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1970 /* we should setup a certificate to return.... */
1971 s->s3->tmp.cert_req=1;
1972 s->s3->tmp.ctype_num=ctype_num;
1973 if (s->s3->tmp.ca_names != NULL)
1974 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1975 s->s3->tmp.ca_names=ca_sk;
1980 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1984 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1986 return(X509_NAME_cmp(*a,*b));
1988 #ifndef OPENSSL_NO_TLSEXT
1989 int ssl3_get_new_session_ticket(SSL *s)
1991 int ok,al,ret=0, ticklen;
1993 const unsigned char *p;
1996 n=s->method->ssl_get_message(s,
1997 SSL3_ST_CR_SESSION_TICKET_A,
1998 SSL3_ST_CR_SESSION_TICKET_B,
2006 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
2008 s->s3->tmp.reuse_message=1;
2011 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
2013 al=SSL_AD_UNEXPECTED_MESSAGE;
2014 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
2019 /* need at least ticket_lifetime_hint + ticket length */
2020 al = SSL_AD_DECODE_ERROR;
2021 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2025 p=d=(unsigned char *)s->init_msg;
2026 n2l(p, s->session->tlsext_tick_lifetime_hint);
2028 /* ticket_lifetime_hint + ticket_length + ticket */
2029 if (ticklen + 6 != n)
2031 al = SSL_AD_DECODE_ERROR;
2032 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2035 if (s->session->tlsext_tick)
2037 OPENSSL_free(s->session->tlsext_tick);
2038 s->session->tlsext_ticklen = 0;
2040 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2041 if (!s->session->tlsext_tick)
2043 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2046 memcpy(s->session->tlsext_tick, p, ticklen);
2047 s->session->tlsext_ticklen = ticklen;
2048 /* There are two ways to detect a resumed ticket sesion.
2049 * One is to set an appropriate session ID and then the server
2050 * must return a match in ServerHello. This allows the normal
2051 * client session ID matching to work and we know much
2052 * earlier that the ticket has been accepted.
2054 * The other way is to set zero length session ID when the
2055 * ticket is presented and rely on the handshake to determine
2056 * session resumption.
2058 * We choose the former approach because this fits in with
2059 * assumptions elsewhere in OpenSSL. The session ID is set
2060 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2063 EVP_Digest(p, ticklen,
2064 s->session->session_id, &s->session->session_id_length,
2065 #ifndef OPENSSL_NO_SHA256
2066 EVP_sha256(), NULL);
2073 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2078 int ssl3_get_cert_status(SSL *s)
2081 unsigned long resplen,n;
2082 const unsigned char *p;
2084 n=s->method->ssl_get_message(s,
2085 SSL3_ST_CR_CERT_STATUS_A,
2086 SSL3_ST_CR_CERT_STATUS_B,
2087 SSL3_MT_CERTIFICATE_STATUS,
2091 if (!ok) return((int)n);
2094 /* need at least status type + length */
2095 al = SSL_AD_DECODE_ERROR;
2096 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2099 p = (unsigned char *)s->init_msg;
2100 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2102 al = SSL_AD_DECODE_ERROR;
2103 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2107 if (resplen + 4 != n)
2109 al = SSL_AD_DECODE_ERROR;
2110 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2113 if (s->tlsext_ocsp_resp)
2114 OPENSSL_free(s->tlsext_ocsp_resp);
2115 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2116 if (!s->tlsext_ocsp_resp)
2118 al = SSL_AD_INTERNAL_ERROR;
2119 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2122 s->tlsext_ocsp_resplen = resplen;
2123 if (s->ctx->tlsext_status_cb)
2126 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2129 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2130 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2135 al = SSL_AD_INTERNAL_ERROR;
2136 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2142 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2147 int ssl3_get_server_done(SSL *s)
2152 n=s->method->ssl_get_message(s,
2153 SSL3_ST_CR_SRVR_DONE_A,
2154 SSL3_ST_CR_SRVR_DONE_B,
2155 SSL3_MT_SERVER_DONE,
2156 30, /* should be very small, like 0 :-) */
2159 if (!ok) return((int)n);
2162 /* should contain no data */
2163 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2164 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2172 int ssl3_send_client_key_exchange(SSL *s)
2174 unsigned char *p,*d;
2176 unsigned long alg_k;
2177 #ifndef OPENSSL_NO_RSA
2179 EVP_PKEY *pkey=NULL;
2181 #ifndef OPENSSL_NO_KRB5
2183 #endif /* OPENSSL_NO_KRB5 */
2184 #ifndef OPENSSL_NO_ECDH
2185 EC_KEY *clnt_ecdh = NULL;
2186 const EC_POINT *srvr_ecpoint = NULL;
2187 EVP_PKEY *srvr_pub_pkey = NULL;
2188 unsigned char *encodedPoint = NULL;
2189 int encoded_pt_len = 0;
2190 BN_CTX * bn_ctx = NULL;
2193 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2195 d=(unsigned char *)s->init_buf->data;
2198 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2200 /* Fool emacs indentation */
2202 #ifndef OPENSSL_NO_RSA
2203 else if (alg_k & SSL_kRSA)
2206 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2208 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2209 rsa=s->session->sess_cert->peer_rsa_tmp;
2212 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2213 if ((pkey == NULL) ||
2214 (pkey->type != EVP_PKEY_RSA) ||
2215 (pkey->pkey.rsa == NULL))
2217 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2221 EVP_PKEY_free(pkey);
2224 tmp_buf[0]=s->client_version>>8;
2225 tmp_buf[1]=s->client_version&0xff;
2226 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2229 s->session->master_key_length=sizeof tmp_buf;
2232 /* Fix buf for TLS and beyond */
2233 if (s->version > SSL3_VERSION)
2235 n=RSA_public_encrypt(sizeof tmp_buf,
2236 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2238 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2239 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2243 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2247 /* Fix buf for TLS and beyond */
2248 if (s->version > SSL3_VERSION)
2254 s->session->master_key_length=
2255 s->method->ssl3_enc->generate_master_secret(s,
2256 s->session->master_key,
2257 tmp_buf,sizeof tmp_buf);
2258 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2261 #ifndef OPENSSL_NO_KRB5
2262 else if (alg_k & SSL_kKRB5)
2264 krb5_error_code krb5rc;
2265 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2266 /* krb5_data krb5_ap_req; */
2267 krb5_data *enc_ticket;
2268 krb5_data authenticator, *authp = NULL;
2269 EVP_CIPHER_CTX ciph_ctx;
2270 const EVP_CIPHER *enc = NULL;
2271 unsigned char iv[EVP_MAX_IV_LENGTH];
2272 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2273 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2274 + EVP_MAX_IV_LENGTH];
2275 int padl, outl = sizeof(epms);
2277 EVP_CIPHER_CTX_init(&ciph_ctx);
2280 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2282 #endif /* KSSL_DEBUG */
2286 if (KRB5SENDAUTH) authp = &authenticator;
2287 #endif /* KRB5SENDAUTH */
2289 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2291 enc = kssl_map_enc(kssl_ctx->enctype);
2296 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2297 if (krb5rc && kssl_err.text)
2298 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2300 #endif /* KSSL_DEBUG */
2304 ssl3_send_alert(s,SSL3_AL_FATAL,
2305 SSL_AD_HANDSHAKE_FAILURE);
2306 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2311 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2312 ** in place of RFC 2712 KerberosWrapper, as in:
2314 ** Send ticket (copy to *p, set n = length)
2315 ** n = krb5_ap_req.length;
2316 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2317 ** if (krb5_ap_req.data)
2318 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2320 ** Now using real RFC 2712 KerberosWrapper
2321 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2322 ** Note: 2712 "opaque" types are here replaced
2323 ** with a 2-byte length followed by the value.
2325 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2326 ** Where "xx xx" = length bytes. Shown here with
2327 ** optional authenticator omitted.
2330 /* KerberosWrapper.Ticket */
2331 s2n(enc_ticket->length,p);
2332 memcpy(p, enc_ticket->data, enc_ticket->length);
2333 p+= enc_ticket->length;
2334 n = enc_ticket->length + 2;
2336 /* KerberosWrapper.Authenticator */
2337 if (authp && authp->length)
2339 s2n(authp->length,p);
2340 memcpy(p, authp->data, authp->length);
2342 n+= authp->length + 2;
2350 s2n(0,p);/* null authenticator length */
2354 tmp_buf[0]=s->client_version>>8;
2355 tmp_buf[1]=s->client_version&0xff;
2356 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2359 /* 20010420 VRS. Tried it this way; failed.
2360 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2361 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2362 ** kssl_ctx->length);
2363 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2366 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2367 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2369 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2371 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2373 if (outl > (int)sizeof epms)
2375 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2378 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2380 /* KerberosWrapper.EncryptedPreMasterSecret */
2382 memcpy(p, epms, outl);
2386 s->session->master_key_length=
2387 s->method->ssl3_enc->generate_master_secret(s,
2388 s->session->master_key,
2389 tmp_buf, sizeof tmp_buf);
2391 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2392 OPENSSL_cleanse(epms, outl);
2395 #ifndef OPENSSL_NO_DH
2396 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2398 DH *dh_srvr,*dh_clnt;
2400 if (s->session->sess_cert == NULL)
2402 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2403 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2407 if (s->session->sess_cert->peer_dh_tmp != NULL)
2408 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2411 /* we get them from the cert */
2412 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2413 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2417 /* generate a new random key */
2418 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2420 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2423 if (!DH_generate_key(dh_clnt))
2425 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2430 /* use the 'p' output buffer for the DH key, but
2431 * make sure to clear it out afterwards */
2433 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2437 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2442 /* generate master key from the result */
2443 s->session->master_key_length=
2444 s->method->ssl3_enc->generate_master_secret(s,
2445 s->session->master_key,p,n);
2449 /* send off the data */
2450 n=BN_num_bytes(dh_clnt->pub_key);
2452 BN_bn2bin(dh_clnt->pub_key,p);
2457 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2461 #ifndef OPENSSL_NO_ECDH
2462 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2464 const EC_GROUP *srvr_group = NULL;
2466 int ecdh_clnt_cert = 0;
2469 /* Did we send out the client's
2470 * ECDH share for use in premaster
2471 * computation as part of client certificate?
2472 * If so, set ecdh_clnt_cert to 1.
2474 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2476 /* XXX: For now, we do not support client
2477 * authentication using ECDH certificates.
2478 * To add such support, one needs to add
2479 * code that checks for appropriate
2480 * conditions and sets ecdh_clnt_cert to 1.
2481 * For example, the cert have an ECC
2482 * key on the same curve as the server's
2483 * and the key should be authorized for
2486 * One also needs to add code in ssl3_connect
2487 * to skip sending the certificate verify
2490 * if ((s->cert->key->privatekey != NULL) &&
2491 * (s->cert->key->privatekey->type ==
2492 * EVP_PKEY_EC) && ...)
2493 * ecdh_clnt_cert = 1;
2497 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2499 tkey = s->session->sess_cert->peer_ecdh_tmp;
2503 /* Get the Server Public Key from Cert */
2504 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2505 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2506 if ((srvr_pub_pkey == NULL) ||
2507 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2508 (srvr_pub_pkey->pkey.ec == NULL))
2510 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2511 ERR_R_INTERNAL_ERROR);
2515 tkey = srvr_pub_pkey->pkey.ec;
2518 srvr_group = EC_KEY_get0_group(tkey);
2519 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2521 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2523 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2524 ERR_R_INTERNAL_ERROR);
2528 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2530 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2534 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2536 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2541 /* Reuse key info from our certificate
2542 * We only need our private key to perform
2543 * the ECDH computation.
2545 const BIGNUM *priv_key;
2546 tkey = s->cert->key->privatekey->pkey.ec;
2547 priv_key = EC_KEY_get0_private_key(tkey);
2548 if (priv_key == NULL)
2550 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2553 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2555 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2561 /* Generate a new ECDH key pair */
2562 if (!(EC_KEY_generate_key(clnt_ecdh)))
2564 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2569 /* use the 'p' output buffer for the ECDH key, but
2570 * make sure to clear it out afterwards
2573 field_size = EC_GROUP_get_degree(srvr_group);
2574 if (field_size <= 0)
2576 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2580 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2583 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2588 /* generate master key from the result */
2589 s->session->master_key_length = s->method->ssl3_enc \
2590 -> generate_master_secret(s,
2591 s->session->master_key,
2594 memset(p, 0, n); /* clean up */
2598 /* Send empty client key exch message */
2603 /* First check the size of encoding and
2604 * allocate memory accordingly.
2607 EC_POINT_point2oct(srvr_group,
2608 EC_KEY_get0_public_key(clnt_ecdh),
2609 POINT_CONVERSION_UNCOMPRESSED,
2612 encodedPoint = (unsigned char *)
2613 OPENSSL_malloc(encoded_pt_len *
2614 sizeof(unsigned char));
2615 bn_ctx = BN_CTX_new();
2616 if ((encodedPoint == NULL) ||
2619 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2623 /* Encode the public key */
2624 n = EC_POINT_point2oct(srvr_group,
2625 EC_KEY_get0_public_key(clnt_ecdh),
2626 POINT_CONVERSION_UNCOMPRESSED,
2627 encodedPoint, encoded_pt_len, bn_ctx);
2629 *p = n; /* length of encoded point */
2630 /* Encoded point will be copied here */
2632 /* copy the point */
2633 memcpy((unsigned char *)p, encodedPoint, n);
2634 /* increment n to account for length field */
2638 /* Free allocated memory */
2639 BN_CTX_free(bn_ctx);
2640 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2641 if (clnt_ecdh != NULL)
2642 EC_KEY_free(clnt_ecdh);
2643 EVP_PKEY_free(srvr_pub_pkey);
2645 #endif /* !OPENSSL_NO_ECDH */
2646 else if (alg_k & SSL_kGOST)
2648 /* GOST key exchange message creation */
2649 EVP_PKEY_CTX *pkey_ctx;
2652 unsigned int md_len;
2654 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2655 EVP_MD_CTX *ukm_hash;
2658 /* Get server sertificate PKEY and create ctx from it */
2659 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2661 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2663 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2667 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2668 /* If we have send a certificate, and certificate key
2670 * parameters match those of server certificate, use
2671 * certificate key for key exchange
2674 /* Otherwise, generate ephemeral key pair */
2676 EVP_PKEY_encrypt_init(pkey_ctx);
2677 /* Generate session key */
2678 RAND_bytes(premaster_secret,32);
2679 /* If we have client certificate, use its secret as peer key */
2680 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2681 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2682 /* If there was an error - just ignore it. Ephemeral key
2688 /* Compute shared IV and store it in algorithm-specific
2690 ukm_hash = EVP_MD_CTX_create();
2691 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2692 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2693 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2694 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2695 EVP_MD_CTX_destroy(ukm_hash);
2696 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2698 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2702 /* Make GOST keytransport blob message */
2703 /*Encapsulate it into sequence */
2704 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2706 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2707 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2714 *(p++)= msglen & 0xff;
2719 *(p++)= msglen & 0xff;
2722 memcpy(p, tmp, msglen);
2723 /* Check if pubkey from client certificate was used */
2724 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2726 /* Set flag "skip certificate verify" */
2727 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2729 EVP_PKEY_CTX_free(pkey_ctx);
2730 s->session->master_key_length=
2731 s->method->ssl3_enc->generate_master_secret(s,
2732 s->session->master_key,premaster_secret,32);
2733 EVP_PKEY_free(pub_key);
2736 #ifndef OPENSSL_NO_SRP
2737 else if (alg_k & SSL_kSRP)
2739 if (s->srp_ctx.A != NULL)
2741 /* send off the data */
2742 n=BN_num_bytes(s->srp_ctx.A);
2744 BN_bn2bin(s->srp_ctx.A,p);
2749 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2752 if (s->session->srp_username != NULL)
2753 OPENSSL_free(s->session->srp_username);
2754 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2755 if (s->session->srp_username == NULL)
2757 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2758 ERR_R_MALLOC_FAILURE);
2762 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2764 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2769 #ifndef OPENSSL_NO_PSK
2770 else if (alg_k & SSL_kPSK)
2772 char identity[PSK_MAX_IDENTITY_LEN];
2773 unsigned char *t = NULL;
2774 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2775 unsigned int pre_ms_len = 0, psk_len = 0;
2779 if (s->psk_client_callback == NULL)
2781 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2782 SSL_R_PSK_NO_CLIENT_CB);
2786 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2787 identity, PSK_MAX_IDENTITY_LEN,
2788 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2789 if (psk_len > PSK_MAX_PSK_LEN)
2791 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2792 ERR_R_INTERNAL_ERROR);
2795 else if (psk_len == 0)
2797 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2798 SSL_R_PSK_IDENTITY_NOT_FOUND);
2802 /* create PSK pre_master_secret */
2803 pre_ms_len = 2+psk_len+2+psk_len;
2805 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2807 memset(t, 0, psk_len);
2811 if (s->session->psk_identity_hint != NULL)
2812 OPENSSL_free(s->session->psk_identity_hint);
2813 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2814 if (s->ctx->psk_identity_hint != NULL &&
2815 s->session->psk_identity_hint == NULL)
2817 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2818 ERR_R_MALLOC_FAILURE);
2822 if (s->session->psk_identity != NULL)
2823 OPENSSL_free(s->session->psk_identity);
2824 s->session->psk_identity = BUF_strdup(identity);
2825 if (s->session->psk_identity == NULL)
2827 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2828 ERR_R_MALLOC_FAILURE);
2832 s->session->master_key_length =
2833 s->method->ssl3_enc->generate_master_secret(s,
2834 s->session->master_key,
2835 psk_or_pre_ms, pre_ms_len);
2836 n = strlen(identity);
2838 memcpy(p, identity, n);
2842 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2843 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2846 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2853 ssl3_send_alert(s, SSL3_AL_FATAL,
2854 SSL_AD_HANDSHAKE_FAILURE);
2855 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2856 ERR_R_INTERNAL_ERROR);
2860 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2863 s->state=SSL3_ST_CW_KEY_EXCH_B;
2864 /* number of bytes to write */
2869 /* SSL3_ST_CW_KEY_EXCH_B */
2870 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2872 #ifndef OPENSSL_NO_ECDH
2873 BN_CTX_free(bn_ctx);
2874 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2875 if (clnt_ecdh != NULL)
2876 EC_KEY_free(clnt_ecdh);
2877 EVP_PKEY_free(srvr_pub_pkey);
2882 int ssl3_send_client_verify(SSL *s)
2884 unsigned char *p,*d;
2885 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2887 EVP_PKEY_CTX *pctx=NULL;
2893 EVP_MD_CTX_init(&mctx);
2895 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2897 d=(unsigned char *)s->init_buf->data;
2899 pkey=s->cert->key->privatekey;
2900 /* Create context from key and test if sha1 is allowed as digest */
2901 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2902 EVP_PKEY_sign_init(pctx);
2903 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2905 if (TLS1_get_version(s) < TLS1_2_VERSION)
2906 s->method->ssl3_enc->cert_verify_mac(s,
2908 &(data[MD5_DIGEST_LENGTH]));
2914 /* For TLS v1.2 send signature algorithm and signature
2915 * using agreed digest and cached handshake records.
2917 if (TLS1_get_version(s) >= TLS1_2_VERSION)
2921 const EVP_MD *md = s->cert->key->digest;
2922 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
2924 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
2926 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2927 ERR_R_INTERNAL_ERROR);
2932 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
2935 if (!EVP_SignInit_ex(&mctx, md, NULL)
2936 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
2937 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
2939 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2945 if (!ssl3_digest_cached_records(s))
2949 #ifndef OPENSSL_NO_RSA
2950 if (pkey->type == EVP_PKEY_RSA)
2952 s->method->ssl3_enc->cert_verify_mac(s,
2955 if (RSA_sign(NID_md5_sha1, data,
2956 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2957 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2959 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2967 #ifndef OPENSSL_NO_DSA
2968 if (pkey->type == EVP_PKEY_DSA)
2970 if (!DSA_sign(pkey->save_type,
2971 &(data[MD5_DIGEST_LENGTH]),
2972 SHA_DIGEST_LENGTH,&(p[2]),
2973 (unsigned int *)&j,pkey->pkey.dsa))
2975 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2983 #ifndef OPENSSL_NO_ECDSA
2984 if (pkey->type == EVP_PKEY_EC)
2986 if (!ECDSA_sign(pkey->save_type,
2987 &(data[MD5_DIGEST_LENGTH]),
2988 SHA_DIGEST_LENGTH,&(p[2]),
2989 (unsigned int *)&j,pkey->pkey.ec))
2991 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3000 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
3002 unsigned char signbuf[64];
3005 s->method->ssl3_enc->cert_verify_mac(s,
3006 NID_id_GostR3411_94,
3008 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
3009 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3010 ERR_R_INTERNAL_ERROR);
3013 for (i=63,j=0; i>=0; j++, i--) {
3021 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
3024 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
3027 s->state=SSL3_ST_CW_CERT_VRFY_B;
3028 s->init_num=(int)n+4;
3031 EVP_MD_CTX_cleanup(&mctx);
3032 EVP_PKEY_CTX_free(pctx);
3033 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3035 EVP_MD_CTX_cleanup(&mctx);
3036 EVP_PKEY_CTX_free(pctx);
3040 int ssl3_send_client_certificate(SSL *s)
3043 EVP_PKEY *pkey=NULL;
3047 if (s->state == SSL3_ST_CW_CERT_A)
3049 if ((s->cert == NULL) ||
3050 (s->cert->key->x509 == NULL) ||
3051 (s->cert->key->privatekey == NULL))
3052 s->state=SSL3_ST_CW_CERT_B;
3054 s->state=SSL3_ST_CW_CERT_C;
3057 /* We need to get a client cert */
3058 if (s->state == SSL3_ST_CW_CERT_B)
3060 /* If we get an error, we need to
3061 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3062 * We then get retied later */
3064 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3067 s->rwstate=SSL_X509_LOOKUP;
3070 s->rwstate=SSL_NOTHING;
3071 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3073 s->state=SSL3_ST_CW_CERT_B;
3074 if ( !SSL_use_certificate(s,x509) ||
3075 !SSL_use_PrivateKey(s,pkey))
3081 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3084 if (x509 != NULL) X509_free(x509);
3085 if (pkey != NULL) EVP_PKEY_free(pkey);
3088 if (s->version == SSL3_VERSION)
3090 s->s3->tmp.cert_req=0;
3091 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3096 s->s3->tmp.cert_req=2;
3100 /* Ok, we have a cert */
3101 s->state=SSL3_ST_CW_CERT_C;
3104 if (s->state == SSL3_ST_CW_CERT_C)
3106 s->state=SSL3_ST_CW_CERT_D;
3107 l=ssl3_output_cert_chain(s,
3108 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
3112 /* SSL3_ST_CW_CERT_D */
3113 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3116 #define has_bits(i,m) (((i)&(m)) == (m))
3118 int ssl3_check_cert_and_algorithm(SSL *s)
3122 EVP_PKEY *pkey=NULL;
3124 #ifndef OPENSSL_NO_RSA
3127 #ifndef OPENSSL_NO_DH
3131 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3132 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3134 /* we don't have a certificate */
3135 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3138 sc=s->session->sess_cert;
3141 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3145 #ifndef OPENSSL_NO_RSA
3146 rsa=s->session->sess_cert->peer_rsa_tmp;
3148 #ifndef OPENSSL_NO_DH
3149 dh=s->session->sess_cert->peer_dh_tmp;
3152 /* This is the passed certificate */
3154 idx=sc->peer_cert_type;
3155 #ifndef OPENSSL_NO_ECDH
3156 if (idx == SSL_PKEY_ECC)
3158 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3160 { /* check failed */
3161 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3170 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3171 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3172 EVP_PKEY_free(pkey);
3175 /* Check that we have a certificate if we require one */
3176 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3178 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3181 #ifndef OPENSSL_NO_DSA
3182 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3184 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3188 #ifndef OPENSSL_NO_RSA
3189 if ((alg_k & SSL_kRSA) &&
3190 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3192 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3196 #ifndef OPENSSL_NO_DH
3197 if ((alg_k & SSL_kEDH) &&
3198 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3200 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3203 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3205 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3208 #ifndef OPENSSL_NO_DSA
3209 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3211 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3217 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3219 #ifndef OPENSSL_NO_RSA
3220 if (alg_k & SSL_kRSA)
3223 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3225 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3231 #ifndef OPENSSL_NO_DH
3232 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3235 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3237 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3244 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3250 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3255 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
3256 int ssl3_send_next_proto(SSL *s)
3258 unsigned int len, padding_len;
3261 if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
3263 len = s->next_proto_negotiated_len;
3264 padding_len = 32 - ((len + 2) % 32);
3265 d = (unsigned char *)s->init_buf->data;
3267 memcpy(d + 5, s->next_proto_negotiated, len);
3268 d[5 + len] = padding_len;
3269 memset(d + 6 + len, 0, padding_len);
3270 *(d++)=SSL3_MT_NEXT_PROTO;
3271 l2n3(2 + len + padding_len, d);
3272 s->state = SSL3_ST_CW_NEXT_PROTO_B;
3273 s->init_num = 4 + 2 + len + padding_len;
3277 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3279 #endif /* !OPENSSL_NO_TLSEXT && !OPENSSL_NO_NEXTPROTONEG */
3281 /* Check to see if handshake is full or resumed. Usually this is just a
3282 * case of checking to see if a cache hit has occurred. In the case of
3283 * session tickets we have to check the next message to be sure.
3286 #ifndef OPENSSL_NO_TLSEXT
3287 int ssl3_check_finished(SSL *s)
3291 /* If we have no ticket it cannot be a resumed session. */
3292 if (!s->session->tlsext_tick)
3294 /* this function is called when we really expect a Certificate
3295 * message, so permit appropriate message length */
3296 n=s->method->ssl_get_message(s,
3302 if (!ok) return((int)n);
3303 s->s3->tmp.reuse_message = 1;
3304 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3305 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3312 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3315 #ifndef OPENSSL_NO_ENGINE
3316 if (s->ctx->client_cert_engine)
3318 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3319 SSL_get_client_CA_list(s),
3320 px509, ppkey, NULL, NULL, NULL);
3325 if (s->ctx->client_cert_cb)
3326 i = s->ctx->client_cert_cb(s,px509,ppkey);