2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
114 * Portions of the attached software ("Contribution") are developed by
115 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
117 * The Contribution is licensed pursuant to the OpenSSL open source
118 * license provided above.
120 * ECC cipher suite support in OpenSSL originally written by
121 * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
124 /* ====================================================================
125 * Copyright 2005 Nokia. All rights reserved.
127 * The portions of the attached software ("Contribution") is developed by
128 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
131 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
132 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
133 * support (see RFC 4279) to OpenSSL.
135 * No patent licenses or other rights except those expressly stated in
136 * the OpenSSL open source license shall be deemed granted or received
137 * expressly, by implication, estoppel, or otherwise.
139 * No assurances are provided by Nokia that the Contribution does not
140 * infringe the patent or other intellectual property rights of any third
141 * party or that the license provides you with all the necessary rights
142 * to make use of the Contribution.
144 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
145 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
146 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
147 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
152 #include <openssl/crypto.h>
153 #include "ssl_locl.h"
154 #include "kssl_lcl.h"
155 #include <openssl/buffer.h>
156 #include <openssl/rand.h>
157 #include <openssl/objects.h>
158 #include <openssl/evp.h>
159 #include <openssl/md5.h>
161 #include <openssl/fips.h>
163 #ifndef OPENSSL_NO_DH
164 #include <openssl/dh.h>
166 #include <openssl/bn.h>
167 #ifndef OPENSSL_NO_ENGINE
168 #include <openssl/engine.h>
171 static const SSL_METHOD *ssl3_get_client_method(int ver);
172 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
174 static const SSL_METHOD *ssl3_get_client_method(int ver)
176 if (ver == SSL3_VERSION)
177 return(SSLv3_client_method());
182 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
183 ssl_undefined_function,
185 ssl3_get_client_method)
187 int ssl3_connect(SSL *s)
190 unsigned long Time=(unsigned long)time(NULL);
191 void (*cb)(const SSL *ssl,int type,int val)=NULL;
193 int new_state,state,skip=0;
195 RAND_add(&Time,sizeof(Time),0);
199 if (s->info_callback != NULL)
201 else if (s->ctx->info_callback != NULL)
202 cb=s->ctx->info_callback;
205 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
213 case SSL_ST_RENEGOTIATE:
215 s->state=SSL_ST_CONNECT;
216 s->ctx->stats.sess_connect_renegotiate++;
220 case SSL_ST_BEFORE|SSL_ST_CONNECT:
221 case SSL_ST_OK|SSL_ST_CONNECT:
224 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
226 if ((s->version & 0xff00 ) != 0x0300)
228 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
233 /* s->version=SSL3_VERSION; */
234 s->type=SSL_ST_CONNECT;
236 if (s->init_buf == NULL)
238 if ((buf=BUF_MEM_new()) == NULL)
243 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
252 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
254 /* setup buffing BIO */
255 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
257 /* don't push the buffering BIO quite yet */
259 ssl3_init_finished_mac(s);
261 s->state=SSL3_ST_CW_CLNT_HELLO_A;
262 s->ctx->stats.sess_connect++;
266 case SSL3_ST_CW_CLNT_HELLO_A:
267 case SSL3_ST_CW_CLNT_HELLO_B:
270 ret=ssl3_client_hello(s);
271 if (ret <= 0) goto end;
272 s->state=SSL3_ST_CR_SRVR_HELLO_A;
275 /* turn on buffering for the next lot of output */
276 if (s->bbio != s->wbio)
277 s->wbio=BIO_push(s->bbio,s->wbio);
281 case SSL3_ST_CR_SRVR_HELLO_A:
282 case SSL3_ST_CR_SRVR_HELLO_B:
283 ret=ssl3_get_server_hello(s);
284 #ifndef OPENSSL_NO_SRP
285 if ((ret == 0) && (s->s3->warn_alert == SSL_AD_MISSING_SRP_USERNAME))
287 if (!SRP_have_to_put_srp_username(s))
289 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_MISSING_SRP_USERNAME);
290 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_USER_CANCELLED);
293 s->state=SSL3_ST_CW_CLNT_HELLO_A;
294 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
298 if (ret <= 0) goto end;
301 s->state=SSL3_ST_CR_FINISHED_A;
303 s->state=SSL3_ST_CR_CERT_A;
307 case SSL3_ST_CR_CERT_A:
308 case SSL3_ST_CR_CERT_B:
309 #ifndef OPENSSL_NO_TLSEXT
310 ret=ssl3_check_finished(s);
311 if (ret <= 0) goto end;
315 if (s->tlsext_ticket_expected)
316 s->state=SSL3_ST_CR_SESSION_TICKET_A;
318 s->state=SSL3_ST_CR_FINISHED_A;
323 /* Check if it is anon DH/ECDH */
325 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
326 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
328 ret=ssl3_get_server_certificate(s);
329 if (ret <= 0) goto end;
330 #ifndef OPENSSL_NO_TLSEXT
331 if (s->tlsext_status_expected)
332 s->state=SSL3_ST_CR_CERT_STATUS_A;
334 s->state=SSL3_ST_CR_KEY_EXCH_A;
339 s->state=SSL3_ST_CR_KEY_EXCH_A;
346 s->state=SSL3_ST_CR_KEY_EXCH_A;
351 case SSL3_ST_CR_KEY_EXCH_A:
352 case SSL3_ST_CR_KEY_EXCH_B:
353 ret=ssl3_get_key_exchange(s);
354 if (ret <= 0) goto end;
355 s->state=SSL3_ST_CR_CERT_REQ_A;
358 /* at this point we check that we have the
359 * required stuff from the server */
360 if (!ssl3_check_cert_and_algorithm(s))
367 case SSL3_ST_CR_CERT_REQ_A:
368 case SSL3_ST_CR_CERT_REQ_B:
369 ret=ssl3_get_certificate_request(s);
370 if (ret <= 0) goto end;
371 s->state=SSL3_ST_CR_SRVR_DONE_A;
375 case SSL3_ST_CR_SRVR_DONE_A:
376 case SSL3_ST_CR_SRVR_DONE_B:
377 ret=ssl3_get_server_done(s);
378 if (ret <= 0) goto end;
379 #ifndef OPENSSL_NO_SRP
380 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP)
382 if ((ret = SRP_Calc_A_param(s))<=0)
384 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SRP_A_CALC);
385 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
390 if (s->s3->tmp.cert_req)
391 s->state=SSL3_ST_CW_CERT_A;
393 s->state=SSL3_ST_CW_KEY_EXCH_A;
398 case SSL3_ST_CW_CERT_A:
399 case SSL3_ST_CW_CERT_B:
400 case SSL3_ST_CW_CERT_C:
401 case SSL3_ST_CW_CERT_D:
402 ret=ssl3_send_client_certificate(s);
403 if (ret <= 0) goto end;
404 s->state=SSL3_ST_CW_KEY_EXCH_A;
408 case SSL3_ST_CW_KEY_EXCH_A:
409 case SSL3_ST_CW_KEY_EXCH_B:
410 ret=ssl3_send_client_key_exchange(s);
411 if (ret <= 0) goto end;
412 /* EAY EAY EAY need to check for DH fix cert
414 /* For TLS, cert_req is set to 2, so a cert chain
415 * of nothing is sent, but no verify packet is sent */
416 /* XXX: For now, we do not support client
417 * authentication in ECDH cipher suites with
418 * ECDH (rather than ECDSA) certificates.
419 * We need to skip the certificate verify
420 * message when client's ECDH public key is sent
421 * inside the client certificate.
423 if (s->s3->tmp.cert_req == 1)
425 s->state=SSL3_ST_CW_CERT_VRFY_A;
429 s->state=SSL3_ST_CW_CHANGE_A;
430 s->s3->change_cipher_spec=0;
432 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
434 s->state=SSL3_ST_CW_CHANGE_A;
435 s->s3->change_cipher_spec=0;
441 case SSL3_ST_CW_CERT_VRFY_A:
442 case SSL3_ST_CW_CERT_VRFY_B:
443 ret=ssl3_send_client_verify(s);
444 if (ret <= 0) goto end;
445 s->state=SSL3_ST_CW_CHANGE_A;
447 s->s3->change_cipher_spec=0;
450 case SSL3_ST_CW_CHANGE_A:
451 case SSL3_ST_CW_CHANGE_B:
452 ret=ssl3_send_change_cipher_spec(s,
453 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
454 if (ret <= 0) goto end;
456 #if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
457 s->state=SSL3_ST_CW_FINISHED_A;
459 if (s->next_proto_negotiated)
460 s->state=SSL3_ST_CW_NEXT_PROTO_A;
462 s->state=SSL3_ST_CW_FINISHED_A;
466 s->session->cipher=s->s3->tmp.new_cipher;
467 #ifdef OPENSSL_NO_COMP
468 s->session->compress_meth=0;
470 if (s->s3->tmp.new_compression == NULL)
471 s->session->compress_meth=0;
473 s->session->compress_meth=
474 s->s3->tmp.new_compression->id;
476 if (!s->method->ssl3_enc->setup_key_block(s))
482 if (!s->method->ssl3_enc->change_cipher_state(s,
483 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
491 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
492 case SSL3_ST_CW_NEXT_PROTO_A:
493 case SSL3_ST_CW_NEXT_PROTO_B:
494 ret=ssl3_send_next_proto(s);
495 if (ret <= 0) goto end;
496 s->state=SSL3_ST_CW_FINISHED_A;
500 case SSL3_ST_CW_FINISHED_A:
501 case SSL3_ST_CW_FINISHED_B:
502 ret=ssl3_send_finished(s,
503 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
504 s->method->ssl3_enc->client_finished_label,
505 s->method->ssl3_enc->client_finished_label_len);
506 if (ret <= 0) goto end;
507 s->state=SSL3_ST_CW_FLUSH;
510 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
513 s->s3->tmp.next_state=SSL_ST_OK;
514 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
517 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
518 s->s3->delay_buf_pop_ret=0;
523 #ifndef OPENSSL_NO_TLSEXT
524 /* Allow NewSessionTicket if ticket expected */
525 if (s->tlsext_ticket_expected)
526 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
530 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
535 #ifndef OPENSSL_NO_TLSEXT
536 case SSL3_ST_CR_SESSION_TICKET_A:
537 case SSL3_ST_CR_SESSION_TICKET_B:
538 ret=ssl3_get_new_session_ticket(s);
539 if (ret <= 0) goto end;
540 s->state=SSL3_ST_CR_FINISHED_A;
544 case SSL3_ST_CR_CERT_STATUS_A:
545 case SSL3_ST_CR_CERT_STATUS_B:
546 ret=ssl3_get_cert_status(s);
547 if (ret <= 0) goto end;
548 s->state=SSL3_ST_CR_KEY_EXCH_A;
553 case SSL3_ST_CR_FINISHED_A:
554 case SSL3_ST_CR_FINISHED_B:
556 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
557 SSL3_ST_CR_FINISHED_B);
558 if (ret <= 0) goto end;
561 s->state=SSL3_ST_CW_CHANGE_A;
567 case SSL3_ST_CW_FLUSH:
568 s->rwstate=SSL_WRITING;
569 if (BIO_flush(s->wbio) <= 0)
574 s->rwstate=SSL_NOTHING;
575 s->state=s->s3->tmp.next_state;
579 /* clean a few things up */
580 ssl3_cleanup_key_block(s);
582 if (s->init_buf != NULL)
584 BUF_MEM_free(s->init_buf);
588 /* If we are not 'joining' the last two packets,
589 * remove the buffering now */
590 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
591 ssl_free_wbio_buffer(s);
592 /* else do it later in ssl3_write */
598 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
599 if (s->hit) s->ctx->stats.sess_hit++;
603 s->handshake_func=ssl3_connect;
604 s->ctx->stats.sess_connect_good++;
606 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
612 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
618 /* did we do anything */
619 if (!s->s3->tmp.reuse_message && !skip)
623 if ((ret=BIO_flush(s->wbio)) <= 0)
627 if ((cb != NULL) && (s->state != state))
631 cb(s,SSL_CB_CONNECT_LOOP,1);
642 cb(s,SSL_CB_CONNECT_EXIT,ret);
647 int ssl3_client_hello(SSL *s)
652 unsigned long Time,l;
653 #ifndef OPENSSL_NO_COMP
658 buf=(unsigned char *)s->init_buf->data;
659 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
661 SSL_SESSION *sess = s->session;
662 if ((sess == NULL) ||
663 (sess->ssl_version != s->version) ||
664 #ifdef OPENSSL_NO_TLSEXT
665 !sess->session_id_length ||
667 (!sess->session_id_length && !sess->tlsext_tick) ||
669 (sess->not_resumable))
671 if (!ssl_get_new_session(s,0))
674 /* else use the pre-loaded session */
676 p=s->s3->client_random;
677 Time=(unsigned long)time(NULL); /* Time */
679 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
682 /* Do the message type and length last */
685 *(p++)=s->version>>8;
686 *(p++)=s->version&0xff;
687 s->client_version=s->version;
690 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
697 i=s->session->session_id_length;
701 if (i > (int)sizeof(s->session->session_id))
703 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
706 memcpy(p,s->session->session_id,i);
710 /* Ciphers supported */
711 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
714 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
721 #ifdef OPENSSL_NO_COMP
725 if ((s->options & SSL_OP_NO_COMPRESSION)
726 || !s->ctx->comp_methods)
729 j=sk_SSL_COMP_num(s->ctx->comp_methods);
733 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
737 *(p++)=0; /* Add the NULL method */
739 #ifndef OPENSSL_NO_TLSEXT
741 if (ssl_prepare_clienthello_tlsext(s) <= 0)
743 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
746 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
748 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
755 *(d++)=SSL3_MT_CLIENT_HELLO;
758 s->state=SSL3_ST_CW_CLNT_HELLO_B;
759 /* number of bytes to write */
764 /* SSL3_ST_CW_CLNT_HELLO_B */
765 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
770 int ssl3_get_server_hello(SSL *s)
772 STACK_OF(SSL_CIPHER) *sk;
778 #ifndef OPENSSL_NO_COMP
782 n=s->method->ssl_get_message(s,
783 SSL3_ST_CR_SRVR_HELLO_A,
784 SSL3_ST_CR_SRVR_HELLO_B,
789 if (!ok) return((int)n);
791 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
793 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
795 if ( s->d1->send_cookie == 0)
797 s->s3->tmp.reuse_message = 1;
800 else /* already sent a cookie */
802 al=SSL_AD_UNEXPECTED_MESSAGE;
803 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
809 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
811 al=SSL_AD_UNEXPECTED_MESSAGE;
812 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
816 d=p=(unsigned char *)s->init_msg;
818 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
820 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
821 s->version=(s->version&0xff00)|p[1];
822 al=SSL_AD_PROTOCOL_VERSION;
827 /* load the server hello data */
828 /* load the server random */
829 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
832 /* get the session-id */
835 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
837 al=SSL_AD_ILLEGAL_PARAMETER;
838 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
842 #ifndef OPENSSL_NO_TLSEXT
843 /* check if we want to resume the session based on external pre-shared secret */
844 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
846 SSL_CIPHER *pref_cipher=NULL;
847 s->session->master_key_length=sizeof(s->session->master_key);
848 if (s->tls_session_secret_cb(s, s->session->master_key,
849 &s->session->master_key_length,
851 s->tls_session_secret_cb_arg))
853 s->session->cipher = pref_cipher ?
854 pref_cipher : ssl_get_cipher_by_char(s, p+j);
857 #endif /* OPENSSL_NO_TLSEXT */
859 if (j != 0 && j == s->session->session_id_length
860 && memcmp(p,s->session->session_id,j) == 0)
862 if(s->sid_ctx_length != s->session->sid_ctx_length
863 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
865 /* actually a client application bug */
866 al=SSL_AD_ILLEGAL_PARAMETER;
867 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
872 else /* a miss or crap from the other end */
874 /* If we were trying for session-id reuse, make a new
875 * SSL_SESSION so we don't stuff up other people */
877 if (s->session->session_id_length > 0)
879 if (!ssl_get_new_session(s,0))
881 al=SSL_AD_INTERNAL_ERROR;
885 s->session->session_id_length=j;
886 memcpy(s->session->session_id,p,j); /* j could be 0 */
889 c=ssl_get_cipher_by_char(s,p);
893 al=SSL_AD_ILLEGAL_PARAMETER;
894 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
897 /* TLS v1.2 only ciphersuites require v1.2 or later */
898 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
899 (TLS1_get_version(s) < TLS1_2_VERSION))
901 al=SSL_AD_ILLEGAL_PARAMETER;
902 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
905 p+=ssl_put_cipher_by_char(s,NULL,NULL);
907 sk=ssl_get_ciphers_by_id(s);
908 i=sk_SSL_CIPHER_find(sk,c);
911 /* we did not say we would use this cipher */
912 al=SSL_AD_ILLEGAL_PARAMETER;
913 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
917 /* Depending on the session caching (internal/external), the cipher
918 and/or cipher_id values may not be set. Make sure that
919 cipher_id is set and use it for comparison. */
920 if (s->session->cipher)
921 s->session->cipher_id = s->session->cipher->id;
922 if (s->hit && (s->session->cipher_id != c->id))
924 /* Workaround is now obsolete */
927 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
930 al=SSL_AD_ILLEGAL_PARAMETER;
931 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
935 s->s3->tmp.new_cipher=c;
936 /* Don't digest cached records if TLS v1.2: we may need them for
937 * client authentication.
939 if (TLS1_get_version(s) < TLS1_2_VERSION && !ssl3_digest_cached_records(s))
941 /* lets get the compression algorithm */
943 #ifdef OPENSSL_NO_COMP
946 al=SSL_AD_ILLEGAL_PARAMETER;
947 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
950 /* If compression is disabled we'd better not try to resume a session
953 if (s->session->compress_meth != 0)
955 al=SSL_AD_INTERNAL_ERROR;
956 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
961 if (s->hit && j != s->session->compress_meth)
963 al=SSL_AD_ILLEGAL_PARAMETER;
964 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
969 else if (s->options & SSL_OP_NO_COMPRESSION)
971 al=SSL_AD_ILLEGAL_PARAMETER;
972 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
976 comp=ssl3_comp_find(s->ctx->comp_methods,j);
978 if ((j != 0) && (comp == NULL))
980 al=SSL_AD_ILLEGAL_PARAMETER;
981 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
986 s->s3->tmp.new_compression=comp;
990 #ifndef OPENSSL_NO_TLSEXT
992 if (s->version >= SSL3_VERSION)
994 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
996 /* 'al' set by ssl_parse_serverhello_tlsext */
997 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
1000 if (ssl_check_serverhello_tlsext(s) <= 0)
1002 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
1010 /* wrong packet length */
1011 al=SSL_AD_DECODE_ERROR;
1012 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
1018 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1023 int ssl3_get_server_certificate(SSL *s)
1025 int al,i,ok,ret= -1;
1026 unsigned long n,nc,llen,l;
1028 const unsigned char *q,*p;
1030 STACK_OF(X509) *sk=NULL;
1032 EVP_PKEY *pkey=NULL;
1033 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1035 n=s->method->ssl_get_message(s,
1042 if (!ok) return((int)n);
1044 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1045 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1046 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1048 s->s3->tmp.reuse_message=1;
1052 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1054 al=SSL_AD_UNEXPECTED_MESSAGE;
1055 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1058 p=d=(unsigned char *)s->init_msg;
1060 if ((sk=sk_X509_new_null()) == NULL)
1062 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1069 al=SSL_AD_DECODE_ERROR;
1070 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1073 for (nc=0; nc<llen; )
1076 if ((l+nc+3) > llen)
1078 al=SSL_AD_DECODE_ERROR;
1079 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1084 x=d2i_X509(NULL,&q,l);
1087 al=SSL_AD_BAD_CERTIFICATE;
1088 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1093 al=SSL_AD_DECODE_ERROR;
1094 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1097 if (!sk_X509_push(sk,x))
1099 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1107 i=ssl_verify_cert_chain(s,sk);
1108 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1109 #ifndef OPENSSL_NO_KRB5
1110 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1111 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1112 #endif /* OPENSSL_NO_KRB5 */
1115 al=ssl_verify_alarm_type(s->verify_result);
1116 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1119 ERR_clear_error(); /* but we keep s->verify_result */
1121 sc=ssl_sess_cert_new();
1122 if (sc == NULL) goto err;
1124 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1125 s->session->sess_cert=sc;
1128 /* Inconsistency alert: cert_chain does include the peer's
1129 * certificate, which we don't include in s3_srvr.c */
1130 x=sk_X509_value(sk,0);
1132 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1134 pkey=X509_get_pubkey(x);
1136 /* VRS: allow null cert if auth == KRB5 */
1137 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1138 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1142 printf("pkey,x = %p, %p\n", pkey,x);
1143 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1144 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1145 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1146 #endif /* KSSL_DEBUG */
1148 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1152 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1153 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1157 i=ssl_cert_type(x,pkey);
1158 if (need_cert && i < 0)
1162 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1163 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1169 sc->peer_cert_type=i;
1170 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1171 /* Why would the following ever happen?
1172 * We just created sc a couple of lines ago. */
1173 if (sc->peer_pkeys[i].x509 != NULL)
1174 X509_free(sc->peer_pkeys[i].x509);
1175 sc->peer_pkeys[i].x509=x;
1176 sc->peer_key= &(sc->peer_pkeys[i]);
1178 if (s->session->peer != NULL)
1179 X509_free(s->session->peer);
1180 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1185 sc->peer_cert_type=i;
1188 if (s->session->peer != NULL)
1189 X509_free(s->session->peer);
1190 s->session->peer=NULL;
1192 s->session->verify_result = s->verify_result;
1200 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1203 EVP_PKEY_free(pkey);
1205 sk_X509_pop_free(sk,X509_free);
1209 int ssl3_get_key_exchange(SSL *s)
1211 #ifndef OPENSSL_NO_RSA
1212 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1215 unsigned char *param,*p;
1216 int al,i,j,param_len,ok;
1218 EVP_PKEY *pkey=NULL;
1219 const EVP_MD *md = NULL;
1220 #ifndef OPENSSL_NO_RSA
1223 #ifndef OPENSSL_NO_DH
1226 #ifndef OPENSSL_NO_ECDH
1227 EC_KEY *ecdh = NULL;
1228 BN_CTX *bn_ctx = NULL;
1229 EC_POINT *srvr_ecpoint = NULL;
1231 int encoded_pt_len = 0;
1234 /* use same message size as in ssl3_get_certificate_request()
1235 * as ServerKeyExchange message may be skipped */
1236 n=s->method->ssl_get_message(s,
1237 SSL3_ST_CR_KEY_EXCH_A,
1238 SSL3_ST_CR_KEY_EXCH_B,
1242 if (!ok) return((int)n);
1244 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1246 #ifndef OPENSSL_NO_PSK
1247 /* In plain PSK ciphersuite, ServerKeyExchange can be
1248 omitted if no identity hint is sent. Set
1249 session->sess_cert anyway to avoid problems
1251 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1253 s->session->sess_cert=ssl_sess_cert_new();
1254 if (s->ctx->psk_identity_hint)
1255 OPENSSL_free(s->ctx->psk_identity_hint);
1256 s->ctx->psk_identity_hint = NULL;
1259 s->s3->tmp.reuse_message=1;
1263 param=p=(unsigned char *)s->init_msg;
1264 if (s->session->sess_cert != NULL)
1266 #ifndef OPENSSL_NO_RSA
1267 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1269 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1270 s->session->sess_cert->peer_rsa_tmp=NULL;
1273 #ifndef OPENSSL_NO_DH
1274 if (s->session->sess_cert->peer_dh_tmp)
1276 DH_free(s->session->sess_cert->peer_dh_tmp);
1277 s->session->sess_cert->peer_dh_tmp=NULL;
1280 #ifndef OPENSSL_NO_ECDH
1281 if (s->session->sess_cert->peer_ecdh_tmp)
1283 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1284 s->session->sess_cert->peer_ecdh_tmp=NULL;
1290 s->session->sess_cert=ssl_sess_cert_new();
1294 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1295 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1296 EVP_MD_CTX_init(&md_ctx);
1298 #ifndef OPENSSL_NO_PSK
1299 if (alg_k & SSL_kPSK)
1301 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1303 al=SSL_AD_HANDSHAKE_FAILURE;
1306 /* Store PSK identity hint for later use, hint is used
1307 * in ssl3_send_client_key_exchange. Assume that the
1308 * maximum length of a PSK identity hint can be as
1309 * long as the maximum length of a PSK identity. */
1310 if (i > PSK_MAX_IDENTITY_LEN)
1312 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1313 SSL_R_DATA_LENGTH_TOO_LONG);
1318 al=SSL_AD_DECODE_ERROR;
1319 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1320 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1323 /* If received PSK identity hint contains NULL
1324 * characters, the hint is truncated from the first
1325 * NULL. p may not be ending with NULL, so create a
1326 * NULL-terminated string. */
1327 memcpy(tmp_id_hint, p, i);
1328 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1329 if (s->ctx->psk_identity_hint != NULL)
1330 OPENSSL_free(s->ctx->psk_identity_hint);
1331 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1332 if (s->ctx->psk_identity_hint == NULL)
1334 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1342 #endif /* !OPENSSL_NO_PSK */
1343 #ifndef OPENSSL_NO_SRP
1344 if (alg_k & SSL_kSRP)
1350 al=SSL_AD_DECODE_ERROR;
1351 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1354 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1356 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1365 al=SSL_AD_DECODE_ERROR;
1366 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1369 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1371 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1376 i = (unsigned int)(p[0]);
1381 al=SSL_AD_DECODE_ERROR;
1382 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1385 if (!(s->srp_ctx.s=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_SRP_B_LENGTH);
1400 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1402 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1408 /* We must check if there is a certificate */
1409 #ifndef OPENSSL_NO_RSA
1410 if (alg_a & SSL_aRSA)
1411 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1416 #ifndef OPENSSL_NO_DSA
1417 else if (alg_a & SSL_aDSS)
1418 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1422 #endif /* !OPENSSL_NO_SRP */
1423 #ifndef OPENSSL_NO_RSA
1424 if (alg_k & SSL_kRSA)
1426 if ((rsa=RSA_new()) == NULL)
1428 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1435 al=SSL_AD_DECODE_ERROR;
1436 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1439 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1441 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1450 al=SSL_AD_DECODE_ERROR;
1451 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1454 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1456 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1462 /* this should be because we are using an export cipher */
1463 if (alg_a & SSL_aRSA)
1464 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1467 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1470 s->session->sess_cert->peer_rsa_tmp=rsa;
1473 #else /* OPENSSL_NO_RSA */
1477 #ifndef OPENSSL_NO_DH
1478 else if (alg_k & SSL_kEDH)
1480 if ((dh=DH_new()) == NULL)
1482 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1489 al=SSL_AD_DECODE_ERROR;
1490 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1493 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1495 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1504 al=SSL_AD_DECODE_ERROR;
1505 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1508 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1510 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1519 al=SSL_AD_DECODE_ERROR;
1520 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1523 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1525 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1531 #ifndef OPENSSL_NO_RSA
1532 if (alg_a & SSL_aRSA)
1533 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1538 #ifndef OPENSSL_NO_DSA
1539 else if (alg_a & SSL_aDSS)
1540 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1542 /* else anonymous DH, so no certificate or pkey. */
1544 s->session->sess_cert->peer_dh_tmp=dh;
1547 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1549 al=SSL_AD_ILLEGAL_PARAMETER;
1550 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1553 #endif /* !OPENSSL_NO_DH */
1555 #ifndef OPENSSL_NO_ECDH
1556 else if (alg_k & SSL_kEECDH)
1559 const EC_GROUP *group;
1561 if ((ecdh=EC_KEY_new()) == NULL)
1563 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1567 /* Extract elliptic curve parameters and the
1568 * server's ephemeral ECDH public key.
1569 * Keep accumulating lengths of various components in
1570 * param_len and make sure it never exceeds n.
1573 /* XXX: For now we only support named (not generic) curves
1574 * and the ECParameters in this case is just three bytes.
1577 if ((param_len > n) ||
1578 (*p != NAMED_CURVE_TYPE) ||
1579 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1581 al=SSL_AD_INTERNAL_ERROR;
1582 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1586 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1589 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1592 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1594 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1597 EC_GROUP_free(ngroup);
1599 group = EC_KEY_get0_group(ecdh);
1601 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1602 (EC_GROUP_get_degree(group) > 163))
1604 al=SSL_AD_EXPORT_RESTRICTION;
1605 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1611 /* Next, get the encoded ECPoint */
1612 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1613 ((bn_ctx = BN_CTX_new()) == NULL))
1615 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1619 encoded_pt_len = *p; /* length of encoded point */
1621 param_len += (1 + encoded_pt_len);
1622 if ((param_len > n) ||
1623 (EC_POINT_oct2point(group, srvr_ecpoint,
1624 p, encoded_pt_len, bn_ctx) == 0))
1626 al=SSL_AD_DECODE_ERROR;
1627 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1634 /* The ECC/TLS specification does not mention
1635 * the use of DSA to sign ECParameters in the server
1636 * key exchange message. We do support RSA and ECDSA.
1639 #ifndef OPENSSL_NO_RSA
1640 else if (alg_a & SSL_aRSA)
1641 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1643 #ifndef OPENSSL_NO_ECDSA
1644 else if (alg_a & SSL_aECDSA)
1645 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1647 /* else anonymous ECDH, so no certificate or pkey. */
1648 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1649 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1651 BN_CTX_free(bn_ctx);
1653 EC_POINT_free(srvr_ecpoint);
1654 srvr_ecpoint = NULL;
1658 al=SSL_AD_UNEXPECTED_MESSAGE;
1659 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1662 #endif /* !OPENSSL_NO_ECDH */
1665 /* p points to the next byte, there are 'n' bytes left */
1667 /* if it was signed, check the signature */
1670 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1672 int sigalg = tls12_get_sigid(pkey);
1673 /* Should never happen */
1676 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1679 /* Check key type is consistent with signature */
1680 if (sigalg != (int)p[1])
1682 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE);
1683 al=SSL_AD_DECODE_ERROR;
1686 md = tls12_get_hash(p[0]);
1689 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
1690 al=SSL_AD_DECODE_ERROR;
1694 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1704 j=EVP_PKEY_size(pkey);
1706 if ((i != n) || (n > j) || (n <= 0))
1708 /* wrong packet length */
1709 al=SSL_AD_DECODE_ERROR;
1710 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1714 #ifndef OPENSSL_NO_RSA
1715 if (pkey->type == EVP_PKEY_RSA && TLS1_get_version(s) < TLS1_2_VERSION)
1721 for (num=2; num > 0; num--)
1723 EVP_MD_CTX_set_flags(&md_ctx,
1724 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1725 EVP_DigestInit_ex(&md_ctx,(num == 2)
1726 ?s->ctx->md5:s->ctx->sha1, NULL);
1727 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1728 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1729 EVP_DigestUpdate(&md_ctx,param,param_len);
1730 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1734 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1738 al=SSL_AD_DECRYPT_ERROR;
1739 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1745 al=SSL_AD_DECRYPT_ERROR;
1746 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1753 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1754 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1755 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1756 EVP_VerifyUpdate(&md_ctx,param,param_len);
1757 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1760 al=SSL_AD_DECRYPT_ERROR;
1761 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1768 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1769 /* aNULL or kPSK do not need public keys */
1771 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1774 /* still data left over */
1777 al=SSL_AD_DECODE_ERROR;
1778 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1782 EVP_PKEY_free(pkey);
1783 EVP_MD_CTX_cleanup(&md_ctx);
1786 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1788 EVP_PKEY_free(pkey);
1789 #ifndef OPENSSL_NO_RSA
1793 #ifndef OPENSSL_NO_DH
1797 #ifndef OPENSSL_NO_ECDH
1798 BN_CTX_free(bn_ctx);
1799 EC_POINT_free(srvr_ecpoint);
1803 EVP_MD_CTX_cleanup(&md_ctx);
1807 int ssl3_get_certificate_request(SSL *s)
1810 unsigned long n,nc,l;
1811 unsigned int llen, ctype_num,i;
1813 const unsigned char *p,*q;
1815 STACK_OF(X509_NAME) *ca_sk=NULL;
1817 n=s->method->ssl_get_message(s,
1818 SSL3_ST_CR_CERT_REQ_A,
1819 SSL3_ST_CR_CERT_REQ_B,
1824 if (!ok) return((int)n);
1826 s->s3->tmp.cert_req=0;
1828 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1830 s->s3->tmp.reuse_message=1;
1831 /* If we get here we don't need any cached handshake records
1832 * as we wont be doing client auth.
1834 if (s->s3->handshake_buffer)
1836 if (!ssl3_digest_cached_records(s))
1842 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1844 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1845 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1849 /* TLS does not like anon-DH with client cert */
1850 if (s->version > SSL3_VERSION)
1852 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1854 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1855 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1860 p=d=(unsigned char *)s->init_msg;
1862 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1864 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1868 /* get the certificate types */
1870 if (ctype_num > SSL3_CT_NUMBER)
1871 ctype_num=SSL3_CT_NUMBER;
1872 for (i=0; i<ctype_num; i++)
1873 s->s3->tmp.ctype[i]= p[i];
1875 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1878 /* Check we have enough room for signature algorithms and
1879 * following length value.
1881 if ((unsigned long)(p - d + llen + 2) > n)
1883 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1884 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
1887 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
1889 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1890 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
1896 /* get the CA RDNs */
1901 out=fopen("/tmp/vsign.der","w");
1902 fwrite(p,1,llen,out);
1907 if ((unsigned long)(p - d + llen) != n)
1909 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1910 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1914 for (nc=0; nc<llen; )
1917 if ((l+nc+2) > llen)
1919 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1920 goto cont; /* netscape bugs */
1921 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1922 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1928 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1930 /* If netscape tolerance is on, ignore errors */
1931 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1935 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1936 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1943 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1944 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1947 if (!sk_X509_NAME_push(ca_sk,xn))
1949 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1963 /* we should setup a certificate to return.... */
1964 s->s3->tmp.cert_req=1;
1965 s->s3->tmp.ctype_num=ctype_num;
1966 if (s->s3->tmp.ca_names != NULL)
1967 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1968 s->s3->tmp.ca_names=ca_sk;
1973 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1977 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1979 return(X509_NAME_cmp(*a,*b));
1981 #ifndef OPENSSL_NO_TLSEXT
1982 int ssl3_get_new_session_ticket(SSL *s)
1984 int ok,al,ret=0, ticklen;
1986 const unsigned char *p;
1989 n=s->method->ssl_get_message(s,
1990 SSL3_ST_CR_SESSION_TICKET_A,
1991 SSL3_ST_CR_SESSION_TICKET_B,
1999 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
2001 s->s3->tmp.reuse_message=1;
2004 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
2006 al=SSL_AD_UNEXPECTED_MESSAGE;
2007 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
2012 /* need at least ticket_lifetime_hint + ticket length */
2013 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
2014 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2018 p=d=(unsigned char *)s->init_msg;
2019 n2l(p, s->session->tlsext_tick_lifetime_hint);
2021 /* ticket_lifetime_hint + ticket_length + ticket */
2022 if (ticklen + 6 != n)
2024 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
2025 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2028 if (s->session->tlsext_tick)
2030 OPENSSL_free(s->session->tlsext_tick);
2031 s->session->tlsext_ticklen = 0;
2033 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2034 if (!s->session->tlsext_tick)
2036 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2039 memcpy(s->session->tlsext_tick, p, ticklen);
2040 s->session->tlsext_ticklen = ticklen;
2041 /* There are two ways to detect a resumed ticket sesion.
2042 * One is to set an appropriate session ID and then the server
2043 * must return a match in ServerHello. This allows the normal
2044 * client session ID matching to work and we know much
2045 * earlier that the ticket has been accepted.
2047 * The other way is to set zero length session ID when the
2048 * ticket is presented and rely on the handshake to determine
2049 * session resumption.
2051 * We choose the former approach because this fits in with
2052 * assumptions elsewhere in OpenSSL. The session ID is set
2053 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2056 EVP_Digest(p, ticklen,
2057 s->session->session_id, &s->session->session_id_length,
2058 #ifndef OPENSSL_NO_SHA256
2059 EVP_sha256(), NULL);
2066 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2071 int ssl3_get_cert_status(SSL *s)
2074 unsigned long resplen,n;
2075 const unsigned char *p;
2077 n=s->method->ssl_get_message(s,
2078 SSL3_ST_CR_CERT_STATUS_A,
2079 SSL3_ST_CR_CERT_STATUS_B,
2080 SSL3_MT_CERTIFICATE_STATUS,
2084 if (!ok) return((int)n);
2087 /* need at least status type + length */
2088 al = SSL_AD_DECODE_ERROR;
2089 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2092 p = (unsigned char *)s->init_msg;
2093 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2095 al = SSL_AD_DECODE_ERROR;
2096 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2100 if (resplen + 4 != n)
2102 al = SSL_AD_DECODE_ERROR;
2103 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2106 if (s->tlsext_ocsp_resp)
2107 OPENSSL_free(s->tlsext_ocsp_resp);
2108 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2109 if (!s->tlsext_ocsp_resp)
2111 al = SSL_AD_INTERNAL_ERROR;
2112 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2115 s->tlsext_ocsp_resplen = resplen;
2116 if (s->ctx->tlsext_status_cb)
2119 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2122 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2123 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2128 al = SSL_AD_INTERNAL_ERROR;
2129 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2135 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2140 int ssl3_get_server_done(SSL *s)
2145 n=s->method->ssl_get_message(s,
2146 SSL3_ST_CR_SRVR_DONE_A,
2147 SSL3_ST_CR_SRVR_DONE_B,
2148 SSL3_MT_SERVER_DONE,
2149 30, /* should be very small, like 0 :-) */
2152 if (!ok) return((int)n);
2155 /* should contain no data */
2156 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2157 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2165 int ssl3_send_client_key_exchange(SSL *s)
2167 unsigned char *p,*d;
2169 unsigned long alg_k;
2170 #ifndef OPENSSL_NO_RSA
2172 EVP_PKEY *pkey=NULL;
2174 #ifndef OPENSSL_NO_KRB5
2176 #endif /* OPENSSL_NO_KRB5 */
2177 #ifndef OPENSSL_NO_ECDH
2178 EC_KEY *clnt_ecdh = NULL;
2179 const EC_POINT *srvr_ecpoint = NULL;
2180 EVP_PKEY *srvr_pub_pkey = NULL;
2181 unsigned char *encodedPoint = NULL;
2182 int encoded_pt_len = 0;
2183 BN_CTX * bn_ctx = NULL;
2186 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2188 d=(unsigned char *)s->init_buf->data;
2191 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2193 /* Fool emacs indentation */
2195 #ifndef OPENSSL_NO_RSA
2196 else if (alg_k & SSL_kRSA)
2199 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2201 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2202 rsa=s->session->sess_cert->peer_rsa_tmp;
2205 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2206 if ((pkey == NULL) ||
2207 (pkey->type != EVP_PKEY_RSA) ||
2208 (pkey->pkey.rsa == NULL))
2210 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2214 EVP_PKEY_free(pkey);
2217 tmp_buf[0]=s->client_version>>8;
2218 tmp_buf[1]=s->client_version&0xff;
2219 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2222 s->session->master_key_length=sizeof tmp_buf;
2225 /* Fix buf for TLS and beyond */
2226 if (s->version > SSL3_VERSION)
2228 n=RSA_public_encrypt(sizeof tmp_buf,
2229 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2231 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2232 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2236 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2240 /* Fix buf for TLS and beyond */
2241 if (s->version > SSL3_VERSION)
2247 s->session->master_key_length=
2248 s->method->ssl3_enc->generate_master_secret(s,
2249 s->session->master_key,
2250 tmp_buf,sizeof tmp_buf);
2251 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2254 #ifndef OPENSSL_NO_KRB5
2255 else if (alg_k & SSL_kKRB5)
2257 krb5_error_code krb5rc;
2258 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2259 /* krb5_data krb5_ap_req; */
2260 krb5_data *enc_ticket;
2261 krb5_data authenticator, *authp = NULL;
2262 EVP_CIPHER_CTX ciph_ctx;
2263 const EVP_CIPHER *enc = NULL;
2264 unsigned char iv[EVP_MAX_IV_LENGTH];
2265 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2266 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2267 + EVP_MAX_IV_LENGTH];
2268 int padl, outl = sizeof(epms);
2270 EVP_CIPHER_CTX_init(&ciph_ctx);
2273 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2275 #endif /* KSSL_DEBUG */
2279 if (KRB5SENDAUTH) authp = &authenticator;
2280 #endif /* KRB5SENDAUTH */
2282 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2284 enc = kssl_map_enc(kssl_ctx->enctype);
2289 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2290 if (krb5rc && kssl_err.text)
2291 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2293 #endif /* KSSL_DEBUG */
2297 ssl3_send_alert(s,SSL3_AL_FATAL,
2298 SSL_AD_HANDSHAKE_FAILURE);
2299 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2304 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2305 ** in place of RFC 2712 KerberosWrapper, as in:
2307 ** Send ticket (copy to *p, set n = length)
2308 ** n = krb5_ap_req.length;
2309 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2310 ** if (krb5_ap_req.data)
2311 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2313 ** Now using real RFC 2712 KerberosWrapper
2314 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2315 ** Note: 2712 "opaque" types are here replaced
2316 ** with a 2-byte length followed by the value.
2318 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2319 ** Where "xx xx" = length bytes. Shown here with
2320 ** optional authenticator omitted.
2323 /* KerberosWrapper.Ticket */
2324 s2n(enc_ticket->length,p);
2325 memcpy(p, enc_ticket->data, enc_ticket->length);
2326 p+= enc_ticket->length;
2327 n = enc_ticket->length + 2;
2329 /* KerberosWrapper.Authenticator */
2330 if (authp && authp->length)
2332 s2n(authp->length,p);
2333 memcpy(p, authp->data, authp->length);
2335 n+= authp->length + 2;
2343 s2n(0,p);/* null authenticator length */
2347 tmp_buf[0]=s->client_version>>8;
2348 tmp_buf[1]=s->client_version&0xff;
2349 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2352 /* 20010420 VRS. Tried it this way; failed.
2353 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2354 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2355 ** kssl_ctx->length);
2356 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2359 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2360 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2362 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2364 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2366 if (outl > (int)sizeof epms)
2368 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2371 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2373 /* KerberosWrapper.EncryptedPreMasterSecret */
2375 memcpy(p, epms, outl);
2379 s->session->master_key_length=
2380 s->method->ssl3_enc->generate_master_secret(s,
2381 s->session->master_key,
2382 tmp_buf, sizeof tmp_buf);
2384 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2385 OPENSSL_cleanse(epms, outl);
2388 #ifndef OPENSSL_NO_DH
2389 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2391 DH *dh_srvr,*dh_clnt;
2393 if (s->session->sess_cert == NULL)
2395 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2396 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2400 if (s->session->sess_cert->peer_dh_tmp != NULL)
2401 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2404 /* we get them from the cert */
2405 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2406 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2410 /* generate a new random key */
2411 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2413 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2416 if (!DH_generate_key(dh_clnt))
2418 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2423 /* use the 'p' output buffer for the DH key, but
2424 * make sure to clear it out afterwards */
2426 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2430 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2435 /* generate master key from the result */
2436 s->session->master_key_length=
2437 s->method->ssl3_enc->generate_master_secret(s,
2438 s->session->master_key,p,n);
2442 /* send off the data */
2443 n=BN_num_bytes(dh_clnt->pub_key);
2445 BN_bn2bin(dh_clnt->pub_key,p);
2450 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2454 #ifndef OPENSSL_NO_ECDH
2455 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2457 const EC_GROUP *srvr_group = NULL;
2459 int ecdh_clnt_cert = 0;
2462 /* Did we send out the client's
2463 * ECDH share for use in premaster
2464 * computation as part of client certificate?
2465 * If so, set ecdh_clnt_cert to 1.
2467 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2469 /* XXX: For now, we do not support client
2470 * authentication using ECDH certificates.
2471 * To add such support, one needs to add
2472 * code that checks for appropriate
2473 * conditions and sets ecdh_clnt_cert to 1.
2474 * For example, the cert have an ECC
2475 * key on the same curve as the server's
2476 * and the key should be authorized for
2479 * One also needs to add code in ssl3_connect
2480 * to skip sending the certificate verify
2483 * if ((s->cert->key->privatekey != NULL) &&
2484 * (s->cert->key->privatekey->type ==
2485 * EVP_PKEY_EC) && ...)
2486 * ecdh_clnt_cert = 1;
2490 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2492 tkey = s->session->sess_cert->peer_ecdh_tmp;
2496 /* Get the Server Public Key from Cert */
2497 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2498 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2499 if ((srvr_pub_pkey == NULL) ||
2500 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2501 (srvr_pub_pkey->pkey.ec == NULL))
2503 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2504 ERR_R_INTERNAL_ERROR);
2508 tkey = srvr_pub_pkey->pkey.ec;
2511 srvr_group = EC_KEY_get0_group(tkey);
2512 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2514 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2516 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2517 ERR_R_INTERNAL_ERROR);
2521 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2523 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2527 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2529 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2534 /* Reuse key info from our certificate
2535 * We only need our private key to perform
2536 * the ECDH computation.
2538 const BIGNUM *priv_key;
2539 tkey = s->cert->key->privatekey->pkey.ec;
2540 priv_key = EC_KEY_get0_private_key(tkey);
2541 if (priv_key == NULL)
2543 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2546 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2548 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2554 /* Generate a new ECDH key pair */
2555 if (!(EC_KEY_generate_key(clnt_ecdh)))
2557 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2562 /* use the 'p' output buffer for the ECDH key, but
2563 * make sure to clear it out afterwards
2566 field_size = EC_GROUP_get_degree(srvr_group);
2567 if (field_size <= 0)
2569 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2573 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2576 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2581 /* generate master key from the result */
2582 s->session->master_key_length = s->method->ssl3_enc \
2583 -> generate_master_secret(s,
2584 s->session->master_key,
2587 memset(p, 0, n); /* clean up */
2591 /* Send empty client key exch message */
2596 /* First check the size of encoding and
2597 * allocate memory accordingly.
2600 EC_POINT_point2oct(srvr_group,
2601 EC_KEY_get0_public_key(clnt_ecdh),
2602 POINT_CONVERSION_UNCOMPRESSED,
2605 encodedPoint = (unsigned char *)
2606 OPENSSL_malloc(encoded_pt_len *
2607 sizeof(unsigned char));
2608 bn_ctx = BN_CTX_new();
2609 if ((encodedPoint == NULL) ||
2612 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2616 /* Encode the public key */
2617 n = EC_POINT_point2oct(srvr_group,
2618 EC_KEY_get0_public_key(clnt_ecdh),
2619 POINT_CONVERSION_UNCOMPRESSED,
2620 encodedPoint, encoded_pt_len, bn_ctx);
2622 *p = n; /* length of encoded point */
2623 /* Encoded point will be copied here */
2625 /* copy the point */
2626 memcpy((unsigned char *)p, encodedPoint, n);
2627 /* increment n to account for length field */
2631 /* Free allocated memory */
2632 BN_CTX_free(bn_ctx);
2633 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2634 if (clnt_ecdh != NULL)
2635 EC_KEY_free(clnt_ecdh);
2636 EVP_PKEY_free(srvr_pub_pkey);
2638 #endif /* !OPENSSL_NO_ECDH */
2639 else if (alg_k & SSL_kGOST)
2641 /* GOST key exchange message creation */
2642 EVP_PKEY_CTX *pkey_ctx;
2645 unsigned int md_len;
2647 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2648 EVP_MD_CTX *ukm_hash;
2651 /* Get server sertificate PKEY and create ctx from it */
2652 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2654 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2656 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2660 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2661 /* If we have send a certificate, and certificate key
2663 * parameters match those of server certificate, use
2664 * certificate key for key exchange
2667 /* Otherwise, generate ephemeral key pair */
2669 EVP_PKEY_encrypt_init(pkey_ctx);
2670 /* Generate session key */
2671 RAND_bytes(premaster_secret,32);
2672 /* If we have client certificate, use its secret as peer key */
2673 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2674 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2675 /* If there was an error - just ignore it. Ephemeral key
2681 /* Compute shared IV and store it in algorithm-specific
2683 ukm_hash = EVP_MD_CTX_create();
2684 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2685 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2686 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2687 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2688 EVP_MD_CTX_destroy(ukm_hash);
2689 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2691 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2695 /* Make GOST keytransport blob message */
2696 /*Encapsulate it into sequence */
2697 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2699 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2700 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2707 *(p++)= msglen & 0xff;
2712 *(p++)= msglen & 0xff;
2715 memcpy(p, tmp, msglen);
2716 /* Check if pubkey from client certificate was used */
2717 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2719 /* Set flag "skip certificate verify" */
2720 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2722 EVP_PKEY_CTX_free(pkey_ctx);
2723 s->session->master_key_length=
2724 s->method->ssl3_enc->generate_master_secret(s,
2725 s->session->master_key,premaster_secret,32);
2726 EVP_PKEY_free(pub_key);
2729 #ifndef OPENSSL_NO_SRP
2730 else if (alg_k & SSL_kSRP)
2732 if (s->srp_ctx.A != NULL)
2734 /* send off the data */
2735 n=BN_num_bytes(s->srp_ctx.A);
2737 BN_bn2bin(s->srp_ctx.A,p);
2742 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2745 if (s->session->srp_username != NULL)
2746 OPENSSL_free(s->session->srp_username);
2747 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2748 if (s->session->srp_username == NULL)
2750 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2751 ERR_R_MALLOC_FAILURE);
2755 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2757 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2762 #ifndef OPENSSL_NO_PSK
2763 else if (alg_k & SSL_kPSK)
2765 char identity[PSK_MAX_IDENTITY_LEN];
2766 unsigned char *t = NULL;
2767 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2768 unsigned int pre_ms_len = 0, psk_len = 0;
2772 if (s->psk_client_callback == NULL)
2774 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2775 SSL_R_PSK_NO_CLIENT_CB);
2779 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2780 identity, PSK_MAX_IDENTITY_LEN,
2781 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2782 if (psk_len > PSK_MAX_PSK_LEN)
2784 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2785 ERR_R_INTERNAL_ERROR);
2788 else if (psk_len == 0)
2790 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2791 SSL_R_PSK_IDENTITY_NOT_FOUND);
2795 /* create PSK pre_master_secret */
2796 pre_ms_len = 2+psk_len+2+psk_len;
2798 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2800 memset(t, 0, psk_len);
2804 if (s->session->psk_identity_hint != NULL)
2805 OPENSSL_free(s->session->psk_identity_hint);
2806 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2807 if (s->ctx->psk_identity_hint != NULL &&
2808 s->session->psk_identity_hint == NULL)
2810 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2811 ERR_R_MALLOC_FAILURE);
2815 if (s->session->psk_identity != NULL)
2816 OPENSSL_free(s->session->psk_identity);
2817 s->session->psk_identity = BUF_strdup(identity);
2818 if (s->session->psk_identity == NULL)
2820 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2821 ERR_R_MALLOC_FAILURE);
2825 s->session->master_key_length =
2826 s->method->ssl3_enc->generate_master_secret(s,
2827 s->session->master_key,
2828 psk_or_pre_ms, pre_ms_len);
2829 n = strlen(identity);
2831 memcpy(p, identity, n);
2835 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2836 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2839 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2846 ssl3_send_alert(s, SSL3_AL_FATAL,
2847 SSL_AD_HANDSHAKE_FAILURE);
2848 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2849 ERR_R_INTERNAL_ERROR);
2853 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2856 s->state=SSL3_ST_CW_KEY_EXCH_B;
2857 /* number of bytes to write */
2862 /* SSL3_ST_CW_KEY_EXCH_B */
2863 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2865 #ifndef OPENSSL_NO_ECDH
2866 BN_CTX_free(bn_ctx);
2867 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2868 if (clnt_ecdh != NULL)
2869 EC_KEY_free(clnt_ecdh);
2870 EVP_PKEY_free(srvr_pub_pkey);
2875 int ssl3_send_client_verify(SSL *s)
2877 unsigned char *p,*d;
2878 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2880 EVP_PKEY_CTX *pctx=NULL;
2886 EVP_MD_CTX_init(&mctx);
2888 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2890 d=(unsigned char *)s->init_buf->data;
2892 pkey=s->cert->key->privatekey;
2893 /* Create context from key and test if sha1 is allowed as digest */
2894 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2895 EVP_PKEY_sign_init(pctx);
2896 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2898 if (TLS1_get_version(s) < TLS1_2_VERSION)
2899 s->method->ssl3_enc->cert_verify_mac(s,
2901 &(data[MD5_DIGEST_LENGTH]));
2907 /* For TLS v1.2 send signature algorithm and signature
2908 * using agreed digest and cached handshake records.
2910 if (TLS1_get_version(s) >= TLS1_2_VERSION)
2914 const EVP_MD *md = s->cert->key->digest;
2915 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
2917 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
2919 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2920 ERR_R_INTERNAL_ERROR);
2925 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
2928 if (!EVP_SignInit_ex(&mctx, md, NULL)
2929 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
2930 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
2932 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2938 if (!ssl3_digest_cached_records(s))
2942 #ifndef OPENSSL_NO_RSA
2943 if (pkey->type == EVP_PKEY_RSA)
2945 s->method->ssl3_enc->cert_verify_mac(s,
2948 if (RSA_sign(NID_md5_sha1, data,
2949 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2950 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2952 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2960 #ifndef OPENSSL_NO_DSA
2961 if (pkey->type == EVP_PKEY_DSA)
2963 if (!DSA_sign(pkey->save_type,
2964 &(data[MD5_DIGEST_LENGTH]),
2965 SHA_DIGEST_LENGTH,&(p[2]),
2966 (unsigned int *)&j,pkey->pkey.dsa))
2968 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2976 #ifndef OPENSSL_NO_ECDSA
2977 if (pkey->type == EVP_PKEY_EC)
2979 if (!ECDSA_sign(pkey->save_type,
2980 &(data[MD5_DIGEST_LENGTH]),
2981 SHA_DIGEST_LENGTH,&(p[2]),
2982 (unsigned int *)&j,pkey->pkey.ec))
2984 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2993 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
2995 unsigned char signbuf[64];
2998 s->method->ssl3_enc->cert_verify_mac(s,
2999 NID_id_GostR3411_94,
3001 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
3002 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3003 ERR_R_INTERNAL_ERROR);
3006 for (i=63,j=0; i>=0; j++, i--) {
3014 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
3017 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
3020 s->state=SSL3_ST_CW_CERT_VRFY_B;
3021 s->init_num=(int)n+4;
3024 EVP_MD_CTX_cleanup(&mctx);
3025 EVP_PKEY_CTX_free(pctx);
3026 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3028 EVP_MD_CTX_cleanup(&mctx);
3029 EVP_PKEY_CTX_free(pctx);
3033 int ssl3_send_client_certificate(SSL *s)
3036 EVP_PKEY *pkey=NULL;
3040 if (s->state == SSL3_ST_CW_CERT_A)
3042 if ((s->cert == NULL) ||
3043 (s->cert->key->x509 == NULL) ||
3044 (s->cert->key->privatekey == NULL))
3045 s->state=SSL3_ST_CW_CERT_B;
3047 s->state=SSL3_ST_CW_CERT_C;
3050 /* We need to get a client cert */
3051 if (s->state == SSL3_ST_CW_CERT_B)
3053 /* If we get an error, we need to
3054 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3055 * We then get retied later */
3057 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3060 s->rwstate=SSL_X509_LOOKUP;
3063 s->rwstate=SSL_NOTHING;
3064 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3066 s->state=SSL3_ST_CW_CERT_B;
3067 if ( !SSL_use_certificate(s,x509) ||
3068 !SSL_use_PrivateKey(s,pkey))
3074 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3077 if (x509 != NULL) X509_free(x509);
3078 if (pkey != NULL) EVP_PKEY_free(pkey);
3081 if (s->version == SSL3_VERSION)
3083 s->s3->tmp.cert_req=0;
3084 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3089 s->s3->tmp.cert_req=2;
3093 /* Ok, we have a cert */
3094 s->state=SSL3_ST_CW_CERT_C;
3097 if (s->state == SSL3_ST_CW_CERT_C)
3099 s->state=SSL3_ST_CW_CERT_D;
3100 l=ssl3_output_cert_chain(s,
3101 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
3105 /* SSL3_ST_CW_CERT_D */
3106 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3109 #define has_bits(i,m) (((i)&(m)) == (m))
3111 int ssl3_check_cert_and_algorithm(SSL *s)
3115 EVP_PKEY *pkey=NULL;
3117 #ifndef OPENSSL_NO_RSA
3120 #ifndef OPENSSL_NO_DH
3124 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3125 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3127 /* we don't have a certificate */
3128 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3131 sc=s->session->sess_cert;
3134 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3138 #ifndef OPENSSL_NO_RSA
3139 rsa=s->session->sess_cert->peer_rsa_tmp;
3141 #ifndef OPENSSL_NO_DH
3142 dh=s->session->sess_cert->peer_dh_tmp;
3145 /* This is the passed certificate */
3147 idx=sc->peer_cert_type;
3148 #ifndef OPENSSL_NO_ECDH
3149 if (idx == SSL_PKEY_ECC)
3151 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3153 { /* check failed */
3154 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3163 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3164 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3165 EVP_PKEY_free(pkey);
3168 /* Check that we have a certificate if we require one */
3169 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3171 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3174 #ifndef OPENSSL_NO_DSA
3175 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3177 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3181 #ifndef OPENSSL_NO_RSA
3182 if ((alg_k & SSL_kRSA) &&
3183 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3185 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3189 #ifndef OPENSSL_NO_DH
3190 if ((alg_k & SSL_kEDH) &&
3191 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3193 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3196 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3198 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3201 #ifndef OPENSSL_NO_DSA
3202 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3204 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3210 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3212 #ifndef OPENSSL_NO_RSA
3213 if (alg_k & SSL_kRSA)
3216 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3218 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3224 #ifndef OPENSSL_NO_DH
3225 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3228 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3230 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3237 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3243 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3248 /* Check to see if handshake is full or resumed. Usually this is just a
3249 * case of checking to see if a cache hit has occurred. In the case of
3250 * session tickets we have to check the next message to be sure.
3253 #ifndef OPENSSL_NO_TLSEXT
3254 # ifndef OPENSSL_NO_NEXTPROTONEG
3255 int ssl3_send_next_proto(SSL *s)
3257 unsigned int len, padding_len;
3260 if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
3262 len = s->next_proto_negotiated_len;
3263 padding_len = 32 - ((len + 2) % 32);
3264 d = (unsigned char *)s->init_buf->data;
3266 memcpy(d + 5, s->next_proto_negotiated, len);
3267 d[5 + len] = padding_len;
3268 memset(d + 6 + len, 0, padding_len);
3269 *(d++)=SSL3_MT_NEXT_PROTO;
3270 l2n3(2 + len + padding_len, d);
3271 s->state = SSL3_ST_CW_NEXT_PROTO_B;
3272 s->init_num = 4 + 2 + len + padding_len;
3276 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3280 int ssl3_check_finished(SSL *s)
3284 /* If we have no ticket it cannot be a resumed session. */
3285 if (!s->session->tlsext_tick)
3287 /* this function is called when we really expect a Certificate
3288 * message, so permit appropriate message length */
3289 n=s->method->ssl_get_message(s,
3295 if (!ok) return((int)n);
3296 s->s3->tmp.reuse_message = 1;
3297 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3298 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3305 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3308 #ifndef OPENSSL_NO_ENGINE
3309 if (s->ctx->client_cert_engine)
3311 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3312 SSL_get_client_CA_list(s),
3313 px509, ppkey, NULL, NULL, NULL);
3318 if (s->ctx->client_cert_cb)
3319 i = s->ctx->client_cert_cb(s,px509,ppkey);