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) 1998-2002 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 * In addition, Sun covenants to all licensees who provide a reciprocal
121 * covenant with respect to their own patents if any, not to sue under
122 * current and future patent claims necessarily infringed by the making,
123 * using, practicing, selling, offering for sale and/or otherwise
124 * disposing of the Contribution as delivered hereunder
125 * (or portions thereof), provided that such covenant shall not apply:
126 * 1) for code that a licensee deletes from the Contribution;
127 * 2) separates from the Contribution; or
128 * 3) for infringements caused by:
129 * i) the modification of the Contribution or
130 * ii) the combination of the Contribution with other software or
131 * devices where such combination causes the infringement.
133 * ECC cipher suite support in OpenSSL originally written by
134 * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
139 #include "ssl_locl.h"
140 #include "kssl_lcl.h"
141 #include <openssl/buffer.h>
142 #include <openssl/rand.h>
143 #include <openssl/objects.h>
144 #include <openssl/evp.h>
145 #include <openssl/md5.h>
146 #include "cryptlib.h"
148 static SSL_METHOD
*ssl3_get_client_method(int ver
);
149 static int ssl3_client_hello(SSL
*s
);
150 static int ssl3_get_server_hello(SSL
*s
);
151 static int ssl3_get_certificate_request(SSL
*s
);
152 static int ca_dn_cmp(const X509_NAME
* const *a
,const X509_NAME
* const *b
);
153 static int ssl3_get_server_done(SSL
*s
);
154 static int ssl3_send_client_verify(SSL
*s
);
155 static int ssl3_send_client_certificate(SSL
*s
);
156 static int ssl3_send_client_key_exchange(SSL
*s
);
157 static int ssl3_get_key_exchange(SSL
*s
);
158 static int ssl3_get_server_certificate(SSL
*s
);
159 static int ssl3_check_cert_and_algorithm(SSL
*s
);
161 #ifndef OPENSSL_NO_ECDH
162 static int curve_id2nid(int curve_id
);
163 int check_srvr_ecc_cert_and_alg(X509
*x
, SSL_CIPHER
*cs
);
166 static SSL_METHOD
*ssl3_get_client_method(int ver
)
168 if (ver
== SSL3_VERSION
)
169 return(SSLv3_client_method());
174 SSL_METHOD
*SSLv3_client_method(void)
177 static SSL_METHOD SSLv3_client_data
;
181 CRYPTO_w_lock(CRYPTO_LOCK_SSL_METHOD
);
183 memcpy((char *)&SSLv3_client_data
,(char *)sslv3_base_method(),
185 SSLv3_client_data
.ssl_connect
=ssl3_connect
;
186 SSLv3_client_data
.get_ssl_method
=ssl3_get_client_method
;
189 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_METHOD
);
191 return(&SSLv3_client_data
);
194 int ssl3_connect(SSL
*s
)
197 unsigned long Time
=time(NULL
),l
;
199 void (*cb
)(const SSL
*ssl
,int type
,int val
)=NULL
;
201 int new_state
,state
,skip
=0;;
203 RAND_add(&Time
,sizeof(Time
),0);
207 if (s
->info_callback
!= NULL
)
209 else if (s
->ctx
->info_callback
!= NULL
)
210 cb
=s
->ctx
->info_callback
;
213 if (!SSL_in_init(s
) || SSL_in_before(s
)) SSL_clear(s
);
221 case SSL_ST_RENEGOTIATE
:
223 s
->state
=SSL_ST_CONNECT
;
224 s
->ctx
->stats
.sess_connect_renegotiate
++;
228 case SSL_ST_BEFORE
|SSL_ST_CONNECT
:
229 case SSL_ST_OK
|SSL_ST_CONNECT
:
232 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_START
,1);
234 if ((s
->version
& 0xff00 ) != 0x0300)
236 SSLerr(SSL_F_SSL3_CONNECT
, ERR_R_INTERNAL_ERROR
);
241 /* s->version=SSL3_VERSION; */
242 s
->type
=SSL_ST_CONNECT
;
244 if (s
->init_buf
== NULL
)
246 if ((buf
=BUF_MEM_new()) == NULL
)
251 if (!BUF_MEM_grow(buf
,SSL3_RT_MAX_PLAIN_LENGTH
))
259 if (!ssl3_setup_buffers(s
)) { ret
= -1; goto end
; }
261 /* setup buffing BIO */
262 if (!ssl_init_wbio_buffer(s
,0)) { ret
= -1; goto end
; }
264 /* don't push the buffering BIO quite yet */
266 ssl3_init_finished_mac(s
);
268 s
->state
=SSL3_ST_CW_CLNT_HELLO_A
;
269 s
->ctx
->stats
.sess_connect
++;
273 case SSL3_ST_CW_CLNT_HELLO_A
:
274 case SSL3_ST_CW_CLNT_HELLO_B
:
277 ret
=ssl3_client_hello(s
);
278 if (ret
<= 0) goto end
;
279 s
->state
=SSL3_ST_CR_SRVR_HELLO_A
;
282 /* turn on buffering for the next lot of output */
283 if (s
->bbio
!= s
->wbio
)
284 s
->wbio
=BIO_push(s
->bbio
,s
->wbio
);
288 case SSL3_ST_CR_SRVR_HELLO_A
:
289 case SSL3_ST_CR_SRVR_HELLO_B
:
290 ret
=ssl3_get_server_hello(s
);
291 if (ret
<= 0) goto end
;
293 s
->state
=SSL3_ST_CR_FINISHED_A
;
295 s
->state
=SSL3_ST_CR_CERT_A
;
299 case SSL3_ST_CR_CERT_A
:
300 case SSL3_ST_CR_CERT_B
:
301 /* Check if it is anon DH/ECDH */
302 if (!(s
->s3
->tmp
.new_cipher
->algorithms
& SSL_aNULL
))
304 ret
=ssl3_get_server_certificate(s
);
305 if (ret
<= 0) goto end
;
309 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
313 case SSL3_ST_CR_KEY_EXCH_A
:
314 case SSL3_ST_CR_KEY_EXCH_B
:
315 ret
=ssl3_get_key_exchange(s
);
316 if (ret
<= 0) goto end
;
317 s
->state
=SSL3_ST_CR_CERT_REQ_A
;
320 /* at this point we check that we have the
321 * required stuff from the server */
322 if (!ssl3_check_cert_and_algorithm(s
))
329 case SSL3_ST_CR_CERT_REQ_A
:
330 case SSL3_ST_CR_CERT_REQ_B
:
331 ret
=ssl3_get_certificate_request(s
);
332 if (ret
<= 0) goto end
;
333 s
->state
=SSL3_ST_CR_SRVR_DONE_A
;
337 case SSL3_ST_CR_SRVR_DONE_A
:
338 case SSL3_ST_CR_SRVR_DONE_B
:
339 ret
=ssl3_get_server_done(s
);
340 if (ret
<= 0) goto end
;
341 if (s
->s3
->tmp
.cert_req
)
342 s
->state
=SSL3_ST_CW_CERT_A
;
344 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
349 case SSL3_ST_CW_CERT_A
:
350 case SSL3_ST_CW_CERT_B
:
351 case SSL3_ST_CW_CERT_C
:
352 case SSL3_ST_CW_CERT_D
:
353 ret
=ssl3_send_client_certificate(s
);
354 if (ret
<= 0) goto end
;
355 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
359 case SSL3_ST_CW_KEY_EXCH_A
:
360 case SSL3_ST_CW_KEY_EXCH_B
:
361 ret
=ssl3_send_client_key_exchange(s
);
362 if (ret
<= 0) goto end
;
363 l
=s
->s3
->tmp
.new_cipher
->algorithms
;
364 /* EAY EAY EAY need to check for DH fix cert
366 /* For TLS, cert_req is set to 2, so a cert chain
367 * of nothing is sent, but no verify packet is sent */
368 /* XXX: For now, we do not support client
369 * authentication in ECDH cipher suites with
370 * ECDH (rather than ECDSA) certificates.
371 * We need to skip the certificate verify
372 * message when client's ECDH public key is sent
373 * inside the client certificate.
375 if (s
->s3
->tmp
.cert_req
== 1)
377 s
->state
=SSL3_ST_CW_CERT_VRFY_A
;
381 s
->state
=SSL3_ST_CW_CHANGE_A
;
382 s
->s3
->change_cipher_spec
=0;
388 case SSL3_ST_CW_CERT_VRFY_A
:
389 case SSL3_ST_CW_CERT_VRFY_B
:
390 ret
=ssl3_send_client_verify(s
);
391 if (ret
<= 0) goto end
;
392 s
->state
=SSL3_ST_CW_CHANGE_A
;
394 s
->s3
->change_cipher_spec
=0;
397 case SSL3_ST_CW_CHANGE_A
:
398 case SSL3_ST_CW_CHANGE_B
:
399 ret
=ssl3_send_change_cipher_spec(s
,
400 SSL3_ST_CW_CHANGE_A
,SSL3_ST_CW_CHANGE_B
);
401 if (ret
<= 0) goto end
;
402 s
->state
=SSL3_ST_CW_FINISHED_A
;
405 s
->session
->cipher
=s
->s3
->tmp
.new_cipher
;
406 if (s
->s3
->tmp
.new_compression
== NULL
)
407 s
->session
->compress_meth
=0;
409 s
->session
->compress_meth
=
410 s
->s3
->tmp
.new_compression
->id
;
411 if (!s
->method
->ssl3_enc
->setup_key_block(s
))
417 if (!s
->method
->ssl3_enc
->change_cipher_state(s
,
418 SSL3_CHANGE_CIPHER_CLIENT_WRITE
))
426 case SSL3_ST_CW_FINISHED_A
:
427 case SSL3_ST_CW_FINISHED_B
:
428 ret
=ssl3_send_finished(s
,
429 SSL3_ST_CW_FINISHED_A
,SSL3_ST_CW_FINISHED_B
,
430 s
->method
->ssl3_enc
->client_finished_label
,
431 s
->method
->ssl3_enc
->client_finished_label_len
);
432 if (ret
<= 0) goto end
;
433 s
->state
=SSL3_ST_CW_FLUSH
;
436 s
->s3
->flags
&= ~SSL3_FLAGS_POP_BUFFER
;
439 s
->s3
->tmp
.next_state
=SSL_ST_OK
;
440 if (s
->s3
->flags
& SSL3_FLAGS_DELAY_CLIENT_FINISHED
)
443 s
->s3
->flags
|=SSL3_FLAGS_POP_BUFFER
;
444 s
->s3
->delay_buf_pop_ret
=0;
449 s
->s3
->tmp
.next_state
=SSL3_ST_CR_FINISHED_A
;
454 case SSL3_ST_CR_FINISHED_A
:
455 case SSL3_ST_CR_FINISHED_B
:
457 ret
=ssl3_get_finished(s
,SSL3_ST_CR_FINISHED_A
,
458 SSL3_ST_CR_FINISHED_B
);
459 if (ret
<= 0) goto end
;
462 s
->state
=SSL3_ST_CW_CHANGE_A
;
468 case SSL3_ST_CW_FLUSH
:
469 /* number of bytes to be flushed */
470 num1
=BIO_ctrl(s
->wbio
,BIO_CTRL_INFO
,0,NULL
);
473 s
->rwstate
=SSL_WRITING
;
474 num1
=BIO_flush(s
->wbio
);
475 if (num1
<= 0) { ret
= -1; goto end
; }
476 s
->rwstate
=SSL_NOTHING
;
479 s
->state
=s
->s3
->tmp
.next_state
;
483 /* clean a few things up */
484 ssl3_cleanup_key_block(s
);
486 if (s
->init_buf
!= NULL
)
488 BUF_MEM_free(s
->init_buf
);
492 /* If we are not 'joining' the last two packets,
493 * remove the buffering now */
494 if (!(s
->s3
->flags
& SSL3_FLAGS_POP_BUFFER
))
495 ssl_free_wbio_buffer(s
);
496 /* else do it later in ssl3_write */
501 ssl_update_cache(s
,SSL_SESS_CACHE_CLIENT
);
502 if (s
->hit
) s
->ctx
->stats
.sess_hit
++;
506 s
->handshake_func
=ssl3_connect
;
507 s
->ctx
->stats
.sess_connect_good
++;
509 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_DONE
,1);
515 SSLerr(SSL_F_SSL3_CONNECT
,SSL_R_UNKNOWN_STATE
);
521 /* did we do anything */
522 if (!s
->s3
->tmp
.reuse_message
&& !skip
)
526 if ((ret
=BIO_flush(s
->wbio
)) <= 0)
530 if ((cb
!= NULL
) && (s
->state
!= state
))
534 cb(s
,SSL_CB_CONNECT_LOOP
,1);
543 cb(s
,SSL_CB_CONNECT_EXIT
,ret
);
548 static int ssl3_client_hello(SSL
*s
)
553 unsigned long Time
,l
;
556 buf
=(unsigned char *)s
->init_buf
->data
;
557 if (s
->state
== SSL3_ST_CW_CLNT_HELLO_A
)
559 if ((s
->session
== NULL
) ||
560 (s
->session
->ssl_version
!= s
->version
) ||
561 (s
->session
->not_resumable
))
563 if (!ssl_get_new_session(s
,0))
566 /* else use the pre-loaded session */
568 p
=s
->s3
->client_random
;
569 Time
=time(NULL
); /* Time */
571 RAND_pseudo_bytes(p
,SSL3_RANDOM_SIZE
-sizeof(Time
));
573 /* Do the message type and length last */
576 *(p
++)=s
->version
>>8;
577 *(p
++)=s
->version
&0xff;
578 s
->client_version
=s
->version
;
581 memcpy(p
,s
->s3
->client_random
,SSL3_RANDOM_SIZE
);
588 i
=s
->session
->session_id_length
;
592 if (i
> sizeof s
->session
->session_id
)
594 SSLerr(SSL_F_SSL3_CLIENT_HELLO
, ERR_R_INTERNAL_ERROR
);
597 memcpy(p
,s
->session
->session_id
,i
);
601 /* Ciphers supported */
602 i
=ssl_cipher_list_to_bytes(s
,SSL_get_ciphers(s
),&(p
[2]));
605 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,SSL_R_NO_CIPHERS_AVAILABLE
);
612 if (s
->ctx
->comp_methods
== NULL
)
615 j
=sk_SSL_COMP_num(s
->ctx
->comp_methods
);
619 comp
=sk_SSL_COMP_value(s
->ctx
->comp_methods
,i
);
622 *(p
++)=0; /* Add the NULL method */
626 *(d
++)=SSL3_MT_CLIENT_HELLO
;
629 s
->state
=SSL3_ST_CW_CLNT_HELLO_B
;
630 /* number of bytes to write */
635 /* SSL3_ST_CW_CLNT_HELLO_B */
636 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
641 static int ssl3_get_server_hello(SSL
*s
)
643 STACK_OF(SSL_CIPHER
) *sk
;
651 n
=ssl3_get_message(s
,
652 SSL3_ST_CR_SRVR_HELLO_A
,
653 SSL3_ST_CR_SRVR_HELLO_B
,
654 SSL3_MT_SERVER_HELLO
,
658 if (!ok
) return((int)n
);
659 d
=p
=(unsigned char *)s
->init_msg
;
661 if ((p
[0] != (s
->version
>>8)) || (p
[1] != (s
->version
&0xff)))
663 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_SSL_VERSION
);
664 s
->version
=(s
->version
&0xff00)|p
[1];
665 al
=SSL_AD_PROTOCOL_VERSION
;
670 /* load the server hello data */
671 /* load the server random */
672 memcpy(s
->s3
->server_random
,p
,SSL3_RANDOM_SIZE
);
675 /* get the session-id */
678 if ((j
> sizeof s
->session
->session_id
) || (j
> SSL3_SESSION_ID_SIZE
))
680 al
=SSL_AD_ILLEGAL_PARAMETER
;
681 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_SSL3_SESSION_ID_TOO_LONG
);
684 if (j
!= 0 && j
== s
->session
->session_id_length
685 && memcmp(p
,s
->session
->session_id
,j
) == 0)
687 if(s
->sid_ctx_length
!= s
->session
->sid_ctx_length
688 || memcmp(s
->session
->sid_ctx
,s
->sid_ctx
,s
->sid_ctx_length
))
690 /* actually a client application bug */
691 al
=SSL_AD_ILLEGAL_PARAMETER
;
692 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT
);
697 else /* a miss or crap from the other end */
699 /* If we were trying for session-id reuse, make a new
700 * SSL_SESSION so we don't stuff up other people */
702 if (s
->session
->session_id_length
> 0)
704 if (!ssl_get_new_session(s
,0))
706 al
=SSL_AD_INTERNAL_ERROR
;
710 s
->session
->session_id_length
=j
;
711 memcpy(s
->session
->session_id
,p
,j
); /* j could be 0 */
714 c
=ssl_get_cipher_by_char(s
,p
);
718 al
=SSL_AD_ILLEGAL_PARAMETER
;
719 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNKNOWN_CIPHER_RETURNED
);
722 p
+=ssl_put_cipher_by_char(s
,NULL
,NULL
);
724 sk
=ssl_get_ciphers_by_id(s
);
725 i
=sk_SSL_CIPHER_find(sk
,c
);
728 /* we did not say we would use this cipher */
729 al
=SSL_AD_ILLEGAL_PARAMETER
;
730 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_CIPHER_RETURNED
);
734 if (s
->hit
&& (s
->session
->cipher
!= c
))
737 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
))
739 al
=SSL_AD_ILLEGAL_PARAMETER
;
740 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED
);
744 s
->s3
->tmp
.new_cipher
=c
;
746 /* lets get the compression algorithm */
752 comp
=ssl3_comp_find(s
->ctx
->comp_methods
,j
);
754 if ((j
!= 0) && (comp
== NULL
))
756 al
=SSL_AD_ILLEGAL_PARAMETER
;
757 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
762 s
->s3
->tmp
.new_compression
=comp
;
767 /* wrong packet length */
768 al
=SSL_AD_DECODE_ERROR
;
769 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_PACKET_LENGTH
);
775 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
780 static int ssl3_get_server_certificate(SSL
*s
)
783 unsigned long n
,nc
,llen
,l
;
785 unsigned char *p
,*d
,*q
;
786 STACK_OF(X509
) *sk
=NULL
;
789 int need_cert
= 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
791 n
=ssl3_get_message(s
,
798 if (!ok
) return((int)n
);
800 if (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_KEY_EXCHANGE
)
802 s
->s3
->tmp
.reuse_message
=1;
806 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE
)
808 al
=SSL_AD_UNEXPECTED_MESSAGE
;
809 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_BAD_MESSAGE_TYPE
);
812 d
=p
=(unsigned char *)s
->init_msg
;
814 if ((sk
=sk_X509_new_null()) == NULL
)
816 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
823 al
=SSL_AD_DECODE_ERROR
;
824 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_LENGTH_MISMATCH
);
827 for (nc
=0; nc
<llen
; )
832 al
=SSL_AD_DECODE_ERROR
;
833 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
838 x
=d2i_X509(NULL
,&q
,l
);
841 al
=SSL_AD_BAD_CERTIFICATE
;
842 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_ASN1_LIB
);
847 al
=SSL_AD_DECODE_ERROR
;
848 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
851 if (!sk_X509_push(sk
,x
))
853 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
861 i
=ssl_verify_cert_chain(s
,sk
);
862 if ((s
->verify_mode
!= SSL_VERIFY_NONE
) && (!i
)
863 #ifndef OPENSSL_NO_KRB5
864 && (s
->s3
->tmp
.new_cipher
->algorithms
& (SSL_MKEY_MASK
|SSL_AUTH_MASK
))
865 != (SSL_aKRB5
|SSL_kKRB5
)
866 #endif /* OPENSSL_NO_KRB5 */
869 al
=ssl_verify_alarm_type(s
->verify_result
);
870 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERTIFICATE_VERIFY_FAILED
);
873 ERR_clear_error(); /* but we keep s->verify_result */
875 sc
=ssl_sess_cert_new();
876 if (sc
== NULL
) goto err
;
878 if (s
->session
->sess_cert
) ssl_sess_cert_free(s
->session
->sess_cert
);
879 s
->session
->sess_cert
=sc
;
882 /* Inconsistency alert: cert_chain does include the peer's
883 * certificate, which we don't include in s3_srvr.c */
884 x
=sk_X509_value(sk
,0);
886 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
888 pkey
=X509_get_pubkey(x
);
890 /* VRS: allow null cert if auth == KRB5 */
891 need_cert
= ((s
->s3
->tmp
.new_cipher
->algorithms
892 & (SSL_MKEY_MASK
|SSL_AUTH_MASK
))
893 == (SSL_aKRB5
|SSL_kKRB5
))? 0: 1;
896 printf("pkey,x = %p, %p\n", pkey
,x
);
897 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x
,pkey
));
898 printf("cipher, alg, nc = %s, %lx, %d\n", s
->s3
->tmp
.new_cipher
->name
,
899 s
->s3
->tmp
.new_cipher
->algorithms
, need_cert
);
900 #endif /* KSSL_DEBUG */
902 if (need_cert
&& ((pkey
== NULL
) || EVP_PKEY_missing_parameters(pkey
)))
906 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
907 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS
);
911 i
=ssl_cert_type(x
,pkey
);
912 if (need_cert
&& i
< 0)
916 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
917 SSL_R_UNKNOWN_CERTIFICATE_TYPE
);
923 sc
->peer_cert_type
=i
;
924 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
925 /* Why would the following ever happen?
926 * We just created sc a couple of lines ago. */
927 if (sc
->peer_pkeys
[i
].x509
!= NULL
)
928 X509_free(sc
->peer_pkeys
[i
].x509
);
929 sc
->peer_pkeys
[i
].x509
=x
;
930 sc
->peer_key
= &(sc
->peer_pkeys
[i
]);
932 if (s
->session
->peer
!= NULL
)
933 X509_free(s
->session
->peer
);
934 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
939 sc
->peer_cert_type
=i
;
942 if (s
->session
->peer
!= NULL
)
943 X509_free(s
->session
->peer
);
944 s
->session
->peer
=NULL
;
946 s
->session
->verify_result
= s
->verify_result
;
954 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
959 sk_X509_pop_free(sk
,X509_free
);
963 static int ssl3_get_key_exchange(SSL
*s
)
965 #ifndef OPENSSL_NO_RSA
966 unsigned char *q
,md_buf
[EVP_MAX_MD_SIZE
*2];
969 unsigned char *param
,*p
;
970 int al
,i
,j
,param_len
,ok
;
973 #ifndef OPENSSL_NO_RSA
976 #ifndef OPENSSL_NO_DH
979 #ifndef OPENSSL_NO_ECDH
981 BN_CTX
*bn_ctx
= NULL
;
982 EC_POINT
*srvr_ecpoint
= NULL
;
984 int encoded_pt_len
= 0;
987 /* use same message size as in ssl3_get_certificate_request()
988 * as ServerKeyExchange message may be skipped */
989 n
=ssl3_get_message(s
,
990 SSL3_ST_CR_KEY_EXCH_A
,
991 SSL3_ST_CR_KEY_EXCH_B
,
996 if (!ok
) return((int)n
);
998 if (s
->s3
->tmp
.message_type
!= SSL3_MT_SERVER_KEY_EXCHANGE
)
1000 s
->s3
->tmp
.reuse_message
=1;
1004 param
=p
=(unsigned char *)s
->init_msg
;
1006 if (s
->session
->sess_cert
!= NULL
)
1008 #ifndef OPENSSL_NO_RSA
1009 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
1011 RSA_free(s
->session
->sess_cert
->peer_rsa_tmp
);
1012 s
->session
->sess_cert
->peer_rsa_tmp
=NULL
;
1015 #ifndef OPENSSL_NO_DH
1016 if (s
->session
->sess_cert
->peer_dh_tmp
)
1018 DH_free(s
->session
->sess_cert
->peer_dh_tmp
);
1019 s
->session
->sess_cert
->peer_dh_tmp
=NULL
;
1022 #ifndef OPENSSL_NO_ECDH
1023 if (s
->session
->sess_cert
->peer_ecdh_tmp
)
1025 EC_KEY_free(s
->session
->sess_cert
->peer_ecdh_tmp
);
1026 s
->session
->sess_cert
->peer_ecdh_tmp
=NULL
;
1032 s
->session
->sess_cert
=ssl_sess_cert_new();
1036 alg
=s
->s3
->tmp
.new_cipher
->algorithms
;
1037 EVP_MD_CTX_init(&md_ctx
);
1039 #ifndef OPENSSL_NO_RSA
1042 if ((rsa
=RSA_new()) == NULL
)
1044 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1051 al
=SSL_AD_DECODE_ERROR
;
1052 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_MODULUS_LENGTH
);
1055 if (!(rsa
->n
=BN_bin2bn(p
,i
,rsa
->n
)))
1057 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1066 al
=SSL_AD_DECODE_ERROR
;
1067 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_E_LENGTH
);
1070 if (!(rsa
->e
=BN_bin2bn(p
,i
,rsa
->e
)))
1072 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1078 /* this should be because we are using an export cipher */
1080 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1083 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1086 s
->session
->sess_cert
->peer_rsa_tmp
=rsa
;
1089 #else /* OPENSSL_NO_RSA */
1093 #ifndef OPENSSL_NO_DH
1094 else if (alg
& SSL_kEDH
)
1096 if ((dh
=DH_new()) == NULL
)
1098 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1105 al
=SSL_AD_DECODE_ERROR
;
1106 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_P_LENGTH
);
1109 if (!(dh
->p
=BN_bin2bn(p
,i
,NULL
)))
1111 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1120 al
=SSL_AD_DECODE_ERROR
;
1121 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_G_LENGTH
);
1124 if (!(dh
->g
=BN_bin2bn(p
,i
,NULL
)))
1126 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1135 al
=SSL_AD_DECODE_ERROR
;
1136 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_PUB_KEY_LENGTH
);
1139 if (!(dh
->pub_key
=BN_bin2bn(p
,i
,NULL
)))
1141 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1147 #ifndef OPENSSL_NO_RSA
1149 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1154 #ifndef OPENSSL_NO_DSA
1155 else if (alg
& SSL_aDSS
)
1156 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_DSA_SIGN
].x509
);
1158 /* else anonymous DH, so no certificate or pkey. */
1160 s
->session
->sess_cert
->peer_dh_tmp
=dh
;
1163 else if ((alg
& SSL_kDHr
) || (alg
& SSL_kDHd
))
1165 al
=SSL_AD_ILLEGAL_PARAMETER
;
1166 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER
);
1169 #endif /* !OPENSSL_NO_DH */
1171 #ifndef OPENSSL_NO_ECDH
1172 else if (alg
& SSL_kECDHE
)
1174 if ((ecdh
=EC_KEY_new()) == NULL
)
1176 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1180 /* Extract elliptic curve parameters and the
1181 * server's ephemeral ECDH public key.
1182 * Keep accumulating lengths of various components in
1183 * param_len and make sure it never exceeds n.
1186 /* XXX: For now we only support named (not generic) curves
1187 * and the ECParameters in this case is just two bytes.
1190 if ((param_len
> n
) ||
1191 (*p
!= NAMED_CURVE_TYPE
) ||
1192 ((curve_nid
= curve_id2nid(*(p
+ 1))) == 0))
1194 al
=SSL_AD_INTERNAL_ERROR
;
1195 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS
);
1199 if (!(ecdh
->group
=EC_GROUP_new_by_nid(curve_nid
)))
1201 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_EC_LIB
);
1205 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) &&
1206 (EC_GROUP_get_degree(ecdh
->group
) > 163))
1208 al
=SSL_AD_EXPORT_RESTRICTION
;
1209 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER
);
1215 /* Next, get the encoded ECPoint */
1216 if (((srvr_ecpoint
= EC_POINT_new(ecdh
->group
)) == NULL
) ||
1217 ((bn_ctx
= BN_CTX_new()) == NULL
))
1219 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1223 encoded_pt_len
= *p
; /* length of encoded point */
1225 param_len
+= (1 + encoded_pt_len
);
1226 if ((param_len
> n
) ||
1227 (EC_POINT_oct2point(ecdh
->group
, srvr_ecpoint
,
1228 p
, encoded_pt_len
, bn_ctx
) == 0))
1230 al
=SSL_AD_DECODE_ERROR
;
1231 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_ECPOINT
);
1238 /* The ECC/TLS specification does not mention
1239 * the use of DSA to sign ECParameters in the server
1240 * key exchange message. We do support RSA and ECDSA.
1243 #ifndef OPENSSL_NO_RSA
1244 else if (alg
& SSL_aRSA
)
1245 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1247 #ifndef OPENSSL_NO_ECDSA
1248 else if (alg
& SSL_aECDSA
)
1249 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_ECC
].x509
);
1251 /* else anonymous ECDH, so no certificate or pkey. */
1252 ecdh
->pub_key
= srvr_ecpoint
;
1253 s
->session
->sess_cert
->peer_ecdh_tmp
=ecdh
;
1255 BN_CTX_free(bn_ctx
);
1256 srvr_ecpoint
= NULL
;
1258 else if (alg
& SSL_kECDH
)
1260 al
=SSL_AD_UNEXPECTED_MESSAGE
;
1261 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNEXPECTED_MESSAGE
);
1264 #endif /* !OPENSSL_NO_ECDH */
1267 al
=SSL_AD_HANDSHAKE_FAILURE
;
1268 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER
);
1273 /* p points to the next byte, there are 'n' bytes left */
1275 /* if it was signed, check the signature */
1280 j
=EVP_PKEY_size(pkey
);
1282 if ((i
!= n
) || (n
> j
) || (n
<= 0))
1284 /* wrong packet length */
1285 al
=SSL_AD_DECODE_ERROR
;
1286 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_WRONG_SIGNATURE_LENGTH
);
1290 #ifndef OPENSSL_NO_RSA
1291 if (pkey
->type
== EVP_PKEY_RSA
)
1297 for (num
=2; num
> 0; num
--)
1299 EVP_DigestInit_ex(&md_ctx
,(num
== 2)
1300 ?s
->ctx
->md5
:s
->ctx
->sha1
, NULL
);
1301 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1302 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1303 EVP_DigestUpdate(&md_ctx
,param
,param_len
);
1304 EVP_DigestFinal_ex(&md_ctx
,q
,(unsigned int *)&i
);
1308 i
=RSA_verify(NID_md5_sha1
, md_buf
, j
, p
, n
,
1312 al
=SSL_AD_DECRYPT_ERROR
;
1313 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_DECRYPT
);
1319 al
=SSL_AD_DECRYPT_ERROR
;
1320 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1326 #ifndef OPENSSL_NO_DSA
1327 if (pkey
->type
== EVP_PKEY_DSA
)
1330 EVP_VerifyInit_ex(&md_ctx
,EVP_dss1(), NULL
);
1331 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1332 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1333 EVP_VerifyUpdate(&md_ctx
,param
,param_len
);
1334 if (!EVP_VerifyFinal(&md_ctx
,p
,(int)n
,pkey
))
1337 al
=SSL_AD_DECRYPT_ERROR
;
1338 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1344 #ifndef OPENSSL_NO_ECDSA
1345 if (pkey
->type
== EVP_PKEY_EC
)
1347 /* let's do ECDSA */
1348 EVP_VerifyInit_ex(&md_ctx
,EVP_ecdsa(), NULL
);
1349 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1350 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1351 EVP_VerifyUpdate(&md_ctx
,param
,param_len
);
1352 if (!EVP_VerifyFinal(&md_ctx
,p
,(int)n
,pkey
))
1355 al
=SSL_AD_DECRYPT_ERROR
;
1356 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1363 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1369 /* still data left over */
1370 if (!(alg
& SSL_aNULL
))
1372 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1377 al
=SSL_AD_DECODE_ERROR
;
1378 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_EXTRA_DATA_IN_MESSAGE
);
1382 EVP_PKEY_free(pkey
);
1383 EVP_MD_CTX_cleanup(&md_ctx
);
1386 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1388 EVP_PKEY_free(pkey
);
1389 #ifndef OPENSSL_NO_RSA
1393 #ifndef OPENSSL_NO_DH
1397 #ifndef OPENSSL_NO_ECDH
1398 BN_CTX_free(bn_ctx
);
1399 EC_POINT_free(srvr_ecpoint
);
1403 EVP_MD_CTX_cleanup(&md_ctx
);
1407 static int ssl3_get_certificate_request(SSL
*s
)
1410 unsigned long n
,nc
,l
;
1411 unsigned int llen
,ctype_num
,i
;
1413 unsigned char *p
,*d
,*q
;
1414 STACK_OF(X509_NAME
) *ca_sk
=NULL
;
1416 n
=ssl3_get_message(s
,
1417 SSL3_ST_CR_CERT_REQ_A
,
1418 SSL3_ST_CR_CERT_REQ_B
,
1423 if (!ok
) return((int)n
);
1425 s
->s3
->tmp
.cert_req
=0;
1427 if (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_DONE
)
1429 s
->s3
->tmp
.reuse_message
=1;
1433 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE_REQUEST
)
1435 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
1436 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_WRONG_MESSAGE_TYPE
);
1440 /* TLS does not like anon-DH with client cert */
1441 if (s
->version
> SSL3_VERSION
)
1443 l
=s
->s3
->tmp
.new_cipher
->algorithms
;
1446 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
1447 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER
);
1452 d
=p
=(unsigned char *)s
->init_msg
;
1454 if ((ca_sk
=sk_X509_NAME_new(ca_dn_cmp
)) == NULL
)
1456 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
1460 /* get the certificate types */
1462 if (ctype_num
> SSL3_CT_NUMBER
)
1463 ctype_num
=SSL3_CT_NUMBER
;
1464 for (i
=0; i
<ctype_num
; i
++)
1465 s
->s3
->tmp
.ctype
[i
]= p
[i
];
1468 /* get the CA RDNs */
1473 out
=fopen("/tmp/vsign.der","w");
1474 fwrite(p
,1,llen
,out
);
1479 if ((llen
+ctype_num
+2+1) != n
)
1481 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1482 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_LENGTH_MISMATCH
);
1486 for (nc
=0; nc
<llen
; )
1489 if ((l
+nc
+2) > llen
)
1491 if ((s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
))
1492 goto cont
; /* netscape bugs */
1493 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1494 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_TOO_LONG
);
1500 if ((xn
=d2i_X509_NAME(NULL
,&q
,l
)) == NULL
)
1502 /* If netscape tolerance is on, ignore errors */
1503 if (s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
)
1507 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1508 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_ASN1_LIB
);
1515 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1516 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_LENGTH_MISMATCH
);
1519 if (!sk_X509_NAME_push(ca_sk
,xn
))
1521 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
1535 /* we should setup a certificate to return.... */
1536 s
->s3
->tmp
.cert_req
=1;
1537 s
->s3
->tmp
.ctype_num
=ctype_num
;
1538 if (s
->s3
->tmp
.ca_names
!= NULL
)
1539 sk_X509_NAME_pop_free(s
->s3
->tmp
.ca_names
,X509_NAME_free
);
1540 s
->s3
->tmp
.ca_names
=ca_sk
;
1545 if (ca_sk
!= NULL
) sk_X509_NAME_pop_free(ca_sk
,X509_NAME_free
);
1549 static int ca_dn_cmp(const X509_NAME
* const *a
, const X509_NAME
* const *b
)
1551 return(X509_NAME_cmp(*a
,*b
));
1554 static int ssl3_get_server_done(SSL
*s
)
1559 n
=ssl3_get_message(s
,
1560 SSL3_ST_CR_SRVR_DONE_A
,
1561 SSL3_ST_CR_SRVR_DONE_B
,
1562 SSL3_MT_SERVER_DONE
,
1563 30, /* should be very small, like 0 :-) */
1566 if (!ok
) return((int)n
);
1569 /* should contain no data */
1570 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1571 SSLerr(SSL_F_SSL3_GET_SERVER_DONE
,SSL_R_LENGTH_MISMATCH
);
1578 static int ssl3_send_client_key_exchange(SSL
*s
)
1580 unsigned char *p
,*d
;
1583 #ifndef OPENSSL_NO_RSA
1585 EVP_PKEY
*pkey
=NULL
;
1587 #ifndef OPENSSL_NO_KRB5
1589 #endif /* OPENSSL_NO_KRB5 */
1590 #ifndef OPENSSL_NO_ECDH
1591 EC_KEY
*clnt_ecdh
= NULL
;
1592 EC_POINT
*srvr_ecpoint
= NULL
;
1593 EVP_PKEY
*srvr_pub_pkey
= NULL
;
1594 unsigned char *encodedPoint
= NULL
;
1595 int encoded_pt_len
= 0;
1596 BN_CTX
* bn_ctx
= NULL
;
1599 if (s
->state
== SSL3_ST_CW_KEY_EXCH_A
)
1601 d
=(unsigned char *)s
->init_buf
->data
;
1604 l
=s
->s3
->tmp
.new_cipher
->algorithms
;
1606 /* Fool emacs indentation */
1608 #ifndef OPENSSL_NO_RSA
1609 else if (l
& SSL_kRSA
)
1612 unsigned char tmp_buf
[SSL_MAX_MASTER_KEY_LENGTH
];
1614 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
1615 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
1618 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1619 if ((pkey
== NULL
) ||
1620 (pkey
->type
!= EVP_PKEY_RSA
) ||
1621 (pkey
->pkey
.rsa
== NULL
))
1623 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1627 EVP_PKEY_free(pkey
);
1630 tmp_buf
[0]=s
->client_version
>>8;
1631 tmp_buf
[1]=s
->client_version
&0xff;
1632 if (RAND_bytes(&(tmp_buf
[2]),SSL_MAX_MASTER_KEY_LENGTH
-2) <= 0)
1635 s
->session
->master_key_length
=SSL_MAX_MASTER_KEY_LENGTH
;
1638 /* Fix buf for TLS and beyond */
1639 if (s
->version
> SSL3_VERSION
)
1641 n
=RSA_public_encrypt(SSL_MAX_MASTER_KEY_LENGTH
,
1642 tmp_buf
,p
,rsa
,RSA_PKCS1_PADDING
);
1644 if (s
->options
& SSL_OP_PKCS1_CHECK_1
) p
[1]++;
1645 if (s
->options
& SSL_OP_PKCS1_CHECK_2
) tmp_buf
[0]=0x70;
1649 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_BAD_RSA_ENCRYPT
);
1653 /* Fix buf for TLS and beyond */
1654 if (s
->version
> SSL3_VERSION
)
1660 s
->session
->master_key_length
=
1661 s
->method
->ssl3_enc
->generate_master_secret(s
,
1662 s
->session
->master_key
,
1663 tmp_buf
,SSL_MAX_MASTER_KEY_LENGTH
);
1664 memset(tmp_buf
,0,SSL_MAX_MASTER_KEY_LENGTH
);
1667 #ifndef OPENSSL_NO_KRB5
1668 else if (l
& SSL_kKRB5
)
1670 krb5_error_code krb5rc
;
1671 KSSL_CTX
*kssl_ctx
= s
->kssl_ctx
;
1672 /* krb5_data krb5_ap_req; */
1673 krb5_data
*enc_ticket
;
1674 krb5_data authenticator
, *authp
= NULL
;
1675 EVP_CIPHER_CTX ciph_ctx
;
1676 EVP_CIPHER
*enc
= NULL
;
1677 unsigned char iv
[EVP_MAX_IV_LENGTH
];
1678 unsigned char tmp_buf
[SSL_MAX_MASTER_KEY_LENGTH
];
1679 unsigned char epms
[SSL_MAX_MASTER_KEY_LENGTH
1680 + EVP_MAX_IV_LENGTH
];
1681 int padl
, outl
= sizeof(epms
);
1683 EVP_CIPHER_CTX_init(&ciph_ctx
);
1686 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1688 #endif /* KSSL_DEBUG */
1692 if (KRB5SENDAUTH
) authp
= &authenticator
;
1693 #endif /* KRB5SENDAUTH */
1695 krb5rc
= kssl_cget_tkt(kssl_ctx
, &enc_ticket
, authp
,
1697 enc
= kssl_map_enc(kssl_ctx
->enctype
);
1702 printf("kssl_cget_tkt rtn %d\n", krb5rc
);
1703 if (krb5rc
&& kssl_err
.text
)
1704 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err
.text
);
1706 #endif /* KSSL_DEBUG */
1710 ssl3_send_alert(s
,SSL3_AL_FATAL
,
1711 SSL_AD_HANDSHAKE_FAILURE
);
1712 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
1717 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
1718 ** in place of RFC 2712 KerberosWrapper, as in:
1720 ** Send ticket (copy to *p, set n = length)
1721 ** n = krb5_ap_req.length;
1722 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1723 ** if (krb5_ap_req.data)
1724 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1726 ** Now using real RFC 2712 KerberosWrapper
1727 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
1728 ** Note: 2712 "opaque" types are here replaced
1729 ** with a 2-byte length followed by the value.
1731 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
1732 ** Where "xx xx" = length bytes. Shown here with
1733 ** optional authenticator omitted.
1736 /* KerberosWrapper.Ticket */
1737 s2n(enc_ticket
->length
,p
);
1738 memcpy(p
, enc_ticket
->data
, enc_ticket
->length
);
1739 p
+= enc_ticket
->length
;
1740 n
= enc_ticket
->length
+ 2;
1742 /* KerberosWrapper.Authenticator */
1743 if (authp
&& authp
->length
)
1745 s2n(authp
->length
,p
);
1746 memcpy(p
, authp
->data
, authp
->length
);
1748 n
+= authp
->length
+ 2;
1756 s2n(0,p
);/* null authenticator length */
1760 if (RAND_bytes(tmp_buf
,SSL_MAX_MASTER_KEY_LENGTH
) <= 0)
1763 /* 20010420 VRS. Tried it this way; failed.
1764 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
1765 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
1766 ** kssl_ctx->length);
1767 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
1770 memset(iv
, 0, EVP_MAX_IV_LENGTH
); /* per RFC 1510 */
1771 EVP_EncryptInit_ex(&ciph_ctx
,enc
, NULL
,
1773 EVP_EncryptUpdate(&ciph_ctx
,epms
,&outl
,tmp_buf
,
1774 SSL_MAX_MASTER_KEY_LENGTH
);
1775 EVP_EncryptFinal_ex(&ciph_ctx
,&(epms
[outl
]),&padl
);
1777 if (outl
> sizeof epms
)
1779 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
1782 EVP_CIPHER_CTX_cleanup(&ciph_ctx
);
1784 /* KerberosWrapper.EncryptedPreMasterSecret */
1786 memcpy(p
, epms
, outl
);
1790 s
->session
->master_key_length
=
1791 s
->method
->ssl3_enc
->generate_master_secret(s
,
1792 s
->session
->master_key
,
1793 tmp_buf
, SSL_MAX_MASTER_KEY_LENGTH
);
1795 memset(tmp_buf
, 0, SSL_MAX_MASTER_KEY_LENGTH
);
1796 memset(epms
, 0, outl
);
1799 #ifndef OPENSSL_NO_DH
1800 else if (l
& (SSL_kEDH
|SSL_kDHr
|SSL_kDHd
))
1802 DH
*dh_srvr
,*dh_clnt
;
1804 if (s
->session
->sess_cert
->peer_dh_tmp
!= NULL
)
1805 dh_srvr
=s
->session
->sess_cert
->peer_dh_tmp
;
1808 /* we get them from the cert */
1809 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_HANDSHAKE_FAILURE
);
1810 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS
);
1814 /* generate a new random key */
1815 if ((dh_clnt
=DHparams_dup(dh_srvr
)) == NULL
)
1817 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1820 if (!DH_generate_key(dh_clnt
))
1822 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1826 /* use the 'p' output buffer for the DH key, but
1827 * make sure to clear it out afterwards */
1829 n
=DH_compute_key(p
,dh_srvr
->pub_key
,dh_clnt
);
1833 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1837 /* generate master key from the result */
1838 s
->session
->master_key_length
=
1839 s
->method
->ssl3_enc
->generate_master_secret(s
,
1840 s
->session
->master_key
,p
,n
);
1844 /* send off the data */
1845 n
=BN_num_bytes(dh_clnt
->pub_key
);
1847 BN_bn2bin(dh_clnt
->pub_key
,p
);
1852 /* perhaps clean things up a bit EAY EAY EAY EAY*/
1856 #ifndef OPENSSL_NO_ECDH
1857 else if ((l
& SSL_kECDH
) || (l
& SSL_kECDHE
))
1859 EC_GROUP
*srvr_group
= NULL
;
1860 int ecdh_clnt_cert
= 0;
1862 /* Did we send out the client's
1863 * ECDH share for use in premaster
1864 * computation as part of client certificate?
1865 * If so, set ecdh_clnt_cert to 1.
1867 if ((l
& SSL_kECDH
) && (s
->cert
!= NULL
))
1869 /* XXX: For now, we do not support client
1870 * authentication using ECDH certificates.
1871 * To add such support, one needs to add
1872 * code that checks for appropriate
1873 * conditions and sets ecdh_clnt_cert to 1.
1874 * For example, the cert have an ECC
1875 * key on the same curve as the server's
1876 * and the key should be authorized for
1879 * One also needs to add code in ssl3_connect
1880 * to skip sending the certificate verify
1883 * if ((s->cert->key->privatekey != NULL) &&
1884 * (s->cert->key->privatekey->type ==
1885 * EVP_PKEY_EC) && ...)
1886 * ecdh_clnt_cert = 1;
1890 if (s
->session
->sess_cert
->peer_ecdh_tmp
!= NULL
)
1892 srvr_group
= s
->session
->sess_cert
-> \
1893 peer_ecdh_tmp
->group
;
1894 srvr_ecpoint
= s
->session
->sess_cert
-> \
1895 peer_ecdh_tmp
->pub_key
;
1899 /* Get the Server Public Key from Cert */
1900 srvr_pub_pkey
= X509_get_pubkey(s
->session
-> \
1901 sess_cert
->peer_pkeys
[SSL_PKEY_ECC
].x509
);
1902 if ((srvr_pub_pkey
== NULL
) ||
1903 (srvr_pub_pkey
->type
!= EVP_PKEY_EC
) ||
1904 (srvr_pub_pkey
->pkey
.eckey
== NULL
))
1906 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
1907 ERR_R_INTERNAL_ERROR
);
1911 srvr_group
= srvr_pub_pkey
->pkey
.eckey
->group
;
1913 srvr_pub_pkey
->pkey
.eckey
->pub_key
;
1916 if ((srvr_group
== NULL
) || (srvr_ecpoint
== NULL
))
1918 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
1919 ERR_R_INTERNAL_ERROR
);
1923 if ((clnt_ecdh
=EC_KEY_new()) == NULL
)
1925 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1929 clnt_ecdh
->group
= srvr_group
;
1932 /* Reuse key info from our certificate
1933 * We only need our private key to perform
1934 * the ECDH computation.
1936 clnt_ecdh
->priv_key
= BN_dup(s
->cert
->key
-> \
1937 privatekey
->pkey
.eckey
->priv_key
);
1941 /* Generate a new ECDH key pair */
1942 if (!(EC_KEY_generate_key(clnt_ecdh
)))
1944 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
, ERR_R_ECDH_LIB
);
1949 /* use the 'p' output buffer for the ECDH key, but
1950 * make sure to clear it out afterwards
1953 n
=ECDH_compute_key(p
, srvr_ecpoint
, clnt_ecdh
);
1956 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
1961 /* generate master key from the result */
1962 s
->session
->master_key_length
= s
->method
->ssl3_enc \
1963 -> generate_master_secret(s
,
1964 s
->session
->master_key
,
1967 memset(p
, 0, n
); /* clean up */
1971 /* Send empty client key exch message */
1976 /* First check the size of encoding and
1977 * allocate memory accordingly.
1980 EC_POINT_point2oct(clnt_ecdh
->group
,
1982 POINT_CONVERSION_UNCOMPRESSED
,
1985 encodedPoint
= (unsigned char *)
1986 OPENSSL_malloc(encoded_pt_len
*
1987 sizeof(unsigned char));
1988 bn_ctx
= BN_CTX_new();
1989 if ((encodedPoint
== NULL
) ||
1992 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1996 /* Encode the public key */
1997 n
= EC_POINT_point2oct(clnt_ecdh
->group
,
1999 POINT_CONVERSION_UNCOMPRESSED
,
2000 encodedPoint
, encoded_pt_len
, bn_ctx
);
2002 *p
= n
; /* length of encoded point */
2003 /* Encoded point will be copied here */
2005 /* copy the point */
2006 memcpy((unsigned char *)p
, encodedPoint
, n
);
2007 /* increment n to account for length field */
2011 /* Free allocated memory */
2012 BN_CTX_free(bn_ctx
);
2013 if (encodedPoint
!= NULL
) OPENSSL_free(encodedPoint
);
2014 if (clnt_ecdh
!= NULL
)
2016 /* group is shared */
2017 clnt_ecdh
->group
= NULL
;
2018 EC_KEY_free(clnt_ecdh
);
2020 EVP_PKEY_free(srvr_pub_pkey
);
2022 #endif /* !OPENSSL_NO_ECDH */
2025 ssl3_send_alert(s
, SSL3_AL_FATAL
,
2026 SSL_AD_HANDSHAKE_FAILURE
);
2027 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2028 ERR_R_INTERNAL_ERROR
);
2032 *(d
++)=SSL3_MT_CLIENT_KEY_EXCHANGE
;
2035 s
->state
=SSL3_ST_CW_KEY_EXCH_B
;
2036 /* number of bytes to write */
2041 /* SSL3_ST_CW_KEY_EXCH_B */
2042 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
2044 #ifndef OPENSSL_NO_ECDH
2045 BN_CTX_free(bn_ctx
);
2046 if (encodedPoint
!= NULL
) OPENSSL_free(encodedPoint
);
2047 if (clnt_ecdh
!= NULL
)
2049 /* group is shared */
2050 clnt_ecdh
->group
= NULL
;
2051 EC_KEY_free(clnt_ecdh
);
2053 EVP_PKEY_free(srvr_pub_pkey
);
2058 static int ssl3_send_client_verify(SSL
*s
)
2060 unsigned char *p
,*d
;
2061 unsigned char data
[MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
];
2063 #ifndef OPENSSL_NO_RSA
2067 #ifndef OPENSSL_NO_DSA
2071 if (s
->state
== SSL3_ST_CW_CERT_VRFY_A
)
2073 d
=(unsigned char *)s
->init_buf
->data
;
2075 pkey
=s
->cert
->key
->privatekey
;
2077 s
->method
->ssl3_enc
->cert_verify_mac(s
,&(s
->s3
->finish_dgst2
),
2078 &(data
[MD5_DIGEST_LENGTH
]));
2080 #ifndef OPENSSL_NO_RSA
2081 if (pkey
->type
== EVP_PKEY_RSA
)
2083 s
->method
->ssl3_enc
->cert_verify_mac(s
,
2084 &(s
->s3
->finish_dgst1
),&(data
[0]));
2085 if (RSA_sign(NID_md5_sha1
, data
,
2086 MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
,
2087 &(p
[2]), &u
, pkey
->pkey
.rsa
) <= 0 )
2089 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_RSA_LIB
);
2097 #ifndef OPENSSL_NO_DSA
2098 if (pkey
->type
== EVP_PKEY_DSA
)
2100 if (!DSA_sign(pkey
->save_type
,
2101 &(data
[MD5_DIGEST_LENGTH
]),
2102 SHA_DIGEST_LENGTH
,&(p
[2]),
2103 (unsigned int *)&j
,pkey
->pkey
.dsa
))
2105 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_DSA_LIB
);
2113 #ifndef OPENSSL_NO_ECDSA
2114 if (pkey
->type
== EVP_PKEY_EC
)
2116 if (!ECDSA_sign(pkey
->save_type
,
2117 &(data
[MD5_DIGEST_LENGTH
]),
2118 SHA_DIGEST_LENGTH
,&(p
[2]),
2119 (unsigned int *)&j
,pkey
->pkey
.eckey
))
2121 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
2131 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_INTERNAL_ERROR
);
2134 *(d
++)=SSL3_MT_CERTIFICATE_VERIFY
;
2137 s
->init_num
=(int)n
+4;
2140 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
2145 static int ssl3_send_client_certificate(SSL
*s
)
2148 EVP_PKEY
*pkey
=NULL
;
2152 if (s
->state
== SSL3_ST_CW_CERT_A
)
2154 if ((s
->cert
== NULL
) ||
2155 (s
->cert
->key
->x509
== NULL
) ||
2156 (s
->cert
->key
->privatekey
== NULL
))
2157 s
->state
=SSL3_ST_CW_CERT_B
;
2159 s
->state
=SSL3_ST_CW_CERT_C
;
2162 /* We need to get a client cert */
2163 if (s
->state
== SSL3_ST_CW_CERT_B
)
2165 /* If we get an error, we need to
2166 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2167 * We then get retied later */
2169 if (s
->ctx
->client_cert_cb
!= NULL
)
2170 i
=s
->ctx
->client_cert_cb(s
,&(x509
),&(pkey
));
2173 s
->rwstate
=SSL_X509_LOOKUP
;
2176 s
->rwstate
=SSL_NOTHING
;
2177 if ((i
== 1) && (pkey
!= NULL
) && (x509
!= NULL
))
2179 s
->state
=SSL3_ST_CW_CERT_B
;
2180 if ( !SSL_use_certificate(s
,x509
) ||
2181 !SSL_use_PrivateKey(s
,pkey
))
2187 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE
,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK
);
2190 if (x509
!= NULL
) X509_free(x509
);
2191 if (pkey
!= NULL
) EVP_PKEY_free(pkey
);
2194 if (s
->version
== SSL3_VERSION
)
2196 s
->s3
->tmp
.cert_req
=0;
2197 ssl3_send_alert(s
,SSL3_AL_WARNING
,SSL_AD_NO_CERTIFICATE
);
2202 s
->s3
->tmp
.cert_req
=2;
2206 /* Ok, we have a cert */
2207 s
->state
=SSL3_ST_CW_CERT_C
;
2210 if (s
->state
== SSL3_ST_CW_CERT_C
)
2212 s
->state
=SSL3_ST_CW_CERT_D
;
2213 l
=ssl3_output_cert_chain(s
,
2214 (s
->s3
->tmp
.cert_req
== 2)?NULL
:s
->cert
->key
->x509
);
2218 /* SSL3_ST_CW_CERT_D */
2219 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
2222 #define has_bits(i,m) (((i)&(m)) == (m))
2224 static int ssl3_check_cert_and_algorithm(SSL
*s
)
2228 EVP_PKEY
*pkey
=NULL
;
2230 #ifndef OPENSSL_NO_RSA
2233 #ifndef OPENSSL_NO_DH
2237 sc
=s
->session
->sess_cert
;
2241 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,ERR_R_INTERNAL_ERROR
);
2245 algs
=s
->s3
->tmp
.new_cipher
->algorithms
;
2247 /* we don't have a certificate */
2248 if (algs
& (SSL_aDH
|SSL_aNULL
|SSL_aKRB5
))
2251 #ifndef OPENSSL_NO_RSA
2252 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
2254 #ifndef OPENSSL_NO_DH
2255 dh
=s
->session
->sess_cert
->peer_dh_tmp
;
2258 /* This is the passed certificate */
2260 idx
=sc
->peer_cert_type
;
2261 #ifndef OPENSSL_NO_ECDH
2262 if (idx
== SSL_PKEY_ECC
)
2264 if (check_srvr_ecc_cert_and_alg(sc
->peer_pkeys
[idx
].x509
,
2265 s
->s3
->tmp
.new_cipher
) == 0)
2266 { /* check failed */
2267 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_BAD_ECC_CERT
);
2276 pkey
=X509_get_pubkey(sc
->peer_pkeys
[idx
].x509
);
2277 i
=X509_certificate_type(sc
->peer_pkeys
[idx
].x509
,pkey
);
2278 EVP_PKEY_free(pkey
);
2281 /* Check that we have a certificate if we require one */
2282 if ((algs
& SSL_aRSA
) && !has_bits(i
,EVP_PK_RSA
|EVP_PKT_SIGN
))
2284 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_SIGNING_CERT
);
2287 #ifndef OPENSSL_NO_DSA
2288 else if ((algs
& SSL_aDSS
) && !has_bits(i
,EVP_PK_DSA
|EVP_PKT_SIGN
))
2290 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DSA_SIGNING_CERT
);
2294 #ifndef OPENSSL_NO_RSA
2295 if ((algs
& SSL_kRSA
) &&
2296 !(has_bits(i
,EVP_PK_RSA
|EVP_PKT_ENC
) || (rsa
!= NULL
)))
2298 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_ENCRYPTING_CERT
);
2302 #ifndef OPENSSL_NO_DH
2303 if ((algs
& SSL_kEDH
) &&
2304 !(has_bits(i
,EVP_PK_DH
|EVP_PKT_EXCH
) || (dh
!= NULL
)))
2306 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_KEY
);
2309 else if ((algs
& SSL_kDHr
) && !has_bits(i
,EVP_PK_DH
|EVP_PKS_RSA
))
2311 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_RSA_CERT
);
2314 #ifndef OPENSSL_NO_DSA
2315 else if ((algs
& SSL_kDHd
) && !has_bits(i
,EVP_PK_DH
|EVP_PKS_DSA
))
2317 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_DSA_CERT
);
2323 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) && !has_bits(i
,EVP_PKT_EXP
))
2325 #ifndef OPENSSL_NO_RSA
2326 if (algs
& SSL_kRSA
)
2329 || RSA_size(rsa
) > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
2331 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_RSA_KEY
);
2337 #ifndef OPENSSL_NO_DH
2338 if (algs
& (SSL_kEDH
|SSL_kDHr
|SSL_kDHd
))
2341 || DH_size(dh
) > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
2343 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_DH_KEY
);
2350 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE
);
2356 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_HANDSHAKE_FAILURE
);
2362 #ifndef OPENSSL_NO_ECDH
2363 /* This is the complement of nid2curve_id in s3_srvr.c. */
2364 static int curve_id2nid(int curve_id
)
2366 /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001) */
2367 static int nid_list
[26] =
2370 NID_sect163k1
, /* sect163k1 (1) */
2371 NID_sect163r1
, /* sect163r1 (2) */
2372 NID_sect163r2
, /* sect163r2 (3) */
2373 NID_sect193r1
, /* sect193r1 (4) */
2374 NID_sect193r2
, /* sect193r2 (5) */
2375 NID_sect233k1
, /* sect233k1 (6) */
2376 NID_sect233r1
, /* sect233r1 (7) */
2377 NID_sect239k1
, /* sect239k1 (8) */
2378 NID_sect283k1
, /* sect283k1 (9) */
2379 NID_sect283r1
, /* sect283r1 (10) */
2380 NID_sect409k1
, /* sect409k1 (11) */
2381 NID_sect409r1
, /* sect409r1 (12) */
2382 NID_sect571k1
, /* sect571k1 (13) */
2383 NID_sect571r1
, /* sect571r1 (14) */
2384 NID_secp160k1
, /* secp160k1 (15) */
2385 NID_secp160r1
, /* secp160r1 (16) */
2386 NID_secp160r2
, /* secp160r2 (17) */
2387 NID_secp192k1
, /* secp192k1 (18) */
2388 NID_X9_62_prime192v1
, /* secp192r1 (19) */
2389 NID_secp224k1
, /* secp224k1 (20) */
2390 NID_secp224r1
, /* secp224r1 (21) */
2391 NID_secp256k1
, /* secp256k1 (22) */
2392 NID_X9_62_prime256v1
, /* secp256r1 (23) */
2393 NID_secp384r1
, /* secp384r1 (24) */
2394 NID_secp521r1
/* secp521r1 (25) */
2397 if ((curve_id
< 1) || (curve_id
> 25)) return 0;
2399 return nid_list
[curve_id
];