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) 1998-2003 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.
126 #include "ssl_locl.h"
127 #include "kssl_lcl.h"
128 #include <openssl/buffer.h>
129 #include <openssl/rand.h>
130 #include <openssl/objects.h>
131 #include <openssl/evp.h>
132 #include <openssl/md5.h>
134 #include <openssl/fips.h>
137 #ifndef OPENSSL_NO_DH
138 #include <openssl/dh.h>
140 #include <openssl/bn.h>
141 #ifndef OPENSSL_NO_ENGINE
142 #include <openssl/engine.h>
145 static SSL_METHOD
*ssl3_get_client_method(int ver
);
146 static int ca_dn_cmp(const X509_NAME
* const *a
,const X509_NAME
* const *b
);
147 #ifndef OPENSSL_NO_TLSEXT
148 static int ssl3_check_finished(SSL
*s
);
151 #ifndef OPENSSL_NO_ECDH
152 static int curve_id2nid(int curve_id
);
153 int check_srvr_ecc_cert_and_alg(X509
*x
, SSL_CIPHER
*cs
);
156 static SSL_METHOD
*ssl3_get_client_method(int ver
)
158 if (ver
== SSL3_VERSION
)
159 return(SSLv3_client_method());
164 IMPLEMENT_ssl3_meth_func(SSLv3_client_method
,
165 ssl_undefined_function
,
167 ssl3_get_client_method
)
169 int ssl3_connect(SSL
*s
)
172 unsigned long Time
=(unsigned long)time(NULL
),l
;
174 void (*cb
)(const SSL
*ssl
,int type
,int val
)=NULL
;
176 int new_state
,state
,skip
=0;
178 RAND_add(&Time
,sizeof(Time
),0);
182 if (s
->info_callback
!= NULL
)
184 else if (s
->ctx
->info_callback
!= NULL
)
185 cb
=s
->ctx
->info_callback
;
188 if (!SSL_in_init(s
) || SSL_in_before(s
)) SSL_clear(s
);
196 case SSL_ST_RENEGOTIATE
:
198 s
->state
=SSL_ST_CONNECT
;
199 s
->ctx
->stats
.sess_connect_renegotiate
++;
203 case SSL_ST_BEFORE
|SSL_ST_CONNECT
:
204 case SSL_ST_OK
|SSL_ST_CONNECT
:
207 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_START
,1);
209 if ((s
->version
& 0xff00 ) != 0x0300)
211 SSLerr(SSL_F_SSL3_CONNECT
, ERR_R_INTERNAL_ERROR
);
216 /* s->version=SSL3_VERSION; */
217 s
->type
=SSL_ST_CONNECT
;
219 if (s
->init_buf
== NULL
)
221 if ((buf
=BUF_MEM_new()) == NULL
)
226 if (!BUF_MEM_grow(buf
,SSL3_RT_MAX_PLAIN_LENGTH
))
235 if (!ssl3_setup_buffers(s
)) { ret
= -1; goto end
; }
237 /* setup buffing BIO */
238 if (!ssl_init_wbio_buffer(s
,0)) { ret
= -1; goto end
; }
240 /* don't push the buffering BIO quite yet */
242 ssl3_init_finished_mac(s
);
244 s
->state
=SSL3_ST_CW_CLNT_HELLO_A
;
245 s
->ctx
->stats
.sess_connect
++;
249 case SSL3_ST_CW_CLNT_HELLO_A
:
250 case SSL3_ST_CW_CLNT_HELLO_B
:
253 ret
=ssl3_client_hello(s
);
254 if (ret
<= 0) goto end
;
255 s
->state
=SSL3_ST_CR_SRVR_HELLO_A
;
258 /* turn on buffering for the next lot of output */
259 if (s
->bbio
!= s
->wbio
)
260 s
->wbio
=BIO_push(s
->bbio
,s
->wbio
);
264 case SSL3_ST_CR_SRVR_HELLO_A
:
265 case SSL3_ST_CR_SRVR_HELLO_B
:
266 ret
=ssl3_get_server_hello(s
);
267 if (ret
<= 0) goto end
;
269 s
->state
=SSL3_ST_CR_FINISHED_A
;
271 s
->state
=SSL3_ST_CR_CERT_A
;
275 case SSL3_ST_CR_CERT_A
:
276 case SSL3_ST_CR_CERT_B
:
277 #ifndef OPENSSL_NO_TLSEXT
278 ret
=ssl3_check_finished(s
);
279 if (ret
<= 0) goto end
;
283 if (s
->tlsext_ticket_expected
)
284 s
->state
=SSL3_ST_CR_SESSION_TICKET_A
;
286 s
->state
=SSL3_ST_CR_FINISHED_A
;
291 /* Check if it is anon DH/ECDH */
292 if (!(s
->s3
->tmp
.new_cipher
->algorithms
& SSL_aNULL
))
294 ret
=ssl3_get_server_certificate(s
);
295 if (ret
<= 0) goto end
;
296 #ifndef OPENSSL_NO_TLSEXT
297 if (s
->tlsext_status_expected
)
298 s
->state
=SSL3_ST_CR_CERT_STATUS_A
;
300 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
305 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
312 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
317 case SSL3_ST_CR_KEY_EXCH_A
:
318 case SSL3_ST_CR_KEY_EXCH_B
:
319 ret
=ssl3_get_key_exchange(s
);
320 if (ret
<= 0) goto end
;
321 s
->state
=SSL3_ST_CR_CERT_REQ_A
;
324 /* at this point we check that we have the
325 * required stuff from the server */
326 if (!ssl3_check_cert_and_algorithm(s
))
333 case SSL3_ST_CR_CERT_REQ_A
:
334 case SSL3_ST_CR_CERT_REQ_B
:
335 ret
=ssl3_get_certificate_request(s
);
336 if (ret
<= 0) goto end
;
337 s
->state
=SSL3_ST_CR_SRVR_DONE_A
;
341 case SSL3_ST_CR_SRVR_DONE_A
:
342 case SSL3_ST_CR_SRVR_DONE_B
:
343 ret
=ssl3_get_server_done(s
);
344 if (ret
<= 0) goto end
;
345 if (s
->s3
->tmp
.cert_req
)
346 s
->state
=SSL3_ST_CW_CERT_A
;
348 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
353 case SSL3_ST_CW_CERT_A
:
354 case SSL3_ST_CW_CERT_B
:
355 case SSL3_ST_CW_CERT_C
:
356 case SSL3_ST_CW_CERT_D
:
357 ret
=ssl3_send_client_certificate(s
);
358 if (ret
<= 0) goto end
;
359 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
363 case SSL3_ST_CW_KEY_EXCH_A
:
364 case SSL3_ST_CW_KEY_EXCH_B
:
365 ret
=ssl3_send_client_key_exchange(s
);
366 if (ret
<= 0) goto end
;
367 l
=s
->s3
->tmp
.new_cipher
->algorithms
;
368 /* EAY EAY EAY need to check for DH fix cert
370 /* For TLS, cert_req is set to 2, so a cert chain
371 * of nothing is sent, but no verify packet is sent */
372 /* XXX: For now, we do not support client
373 * authentication in ECDH cipher suites with
374 * ECDH (rather than ECDSA) certificates.
375 * We need to skip the certificate verify
376 * message when client's ECDH public key is sent
377 * inside the client certificate.
379 if (s
->s3
->tmp
.cert_req
== 1)
381 s
->state
=SSL3_ST_CW_CERT_VRFY_A
;
385 s
->state
=SSL3_ST_CW_CHANGE_A
;
386 s
->s3
->change_cipher_spec
=0;
392 case SSL3_ST_CW_CERT_VRFY_A
:
393 case SSL3_ST_CW_CERT_VRFY_B
:
394 ret
=ssl3_send_client_verify(s
);
395 if (ret
<= 0) goto end
;
396 s
->state
=SSL3_ST_CW_CHANGE_A
;
398 s
->s3
->change_cipher_spec
=0;
401 case SSL3_ST_CW_CHANGE_A
:
402 case SSL3_ST_CW_CHANGE_B
:
403 ret
=ssl3_send_change_cipher_spec(s
,
404 SSL3_ST_CW_CHANGE_A
,SSL3_ST_CW_CHANGE_B
);
405 if (ret
<= 0) goto end
;
406 s
->state
=SSL3_ST_CW_FINISHED_A
;
409 s
->session
->cipher
=s
->s3
->tmp
.new_cipher
;
410 #ifdef OPENSSL_NO_COMP
411 s
->session
->compress_meth
=0;
413 if (s
->s3
->tmp
.new_compression
== NULL
)
414 s
->session
->compress_meth
=0;
416 s
->session
->compress_meth
=
417 s
->s3
->tmp
.new_compression
->id
;
419 if (!s
->method
->ssl3_enc
->setup_key_block(s
))
425 if (!s
->method
->ssl3_enc
->change_cipher_state(s
,
426 SSL3_CHANGE_CIPHER_CLIENT_WRITE
))
434 case SSL3_ST_CW_FINISHED_A
:
435 case SSL3_ST_CW_FINISHED_B
:
436 ret
=ssl3_send_finished(s
,
437 SSL3_ST_CW_FINISHED_A
,SSL3_ST_CW_FINISHED_B
,
438 s
->method
->ssl3_enc
->client_finished_label
,
439 s
->method
->ssl3_enc
->client_finished_label_len
);
440 if (ret
<= 0) goto end
;
441 s
->state
=SSL3_ST_CW_FLUSH
;
444 s
->s3
->flags
&= ~SSL3_FLAGS_POP_BUFFER
;
447 s
->s3
->tmp
.next_state
=SSL_ST_OK
;
448 if (s
->s3
->flags
& SSL3_FLAGS_DELAY_CLIENT_FINISHED
)
451 s
->s3
->flags
|=SSL3_FLAGS_POP_BUFFER
;
452 s
->s3
->delay_buf_pop_ret
=0;
457 #ifndef OPENSSL_NO_TLSEXT
458 /* Allow NewSessionTicket if ticket expected */
459 if (s
->tlsext_ticket_expected
)
460 s
->s3
->tmp
.next_state
=SSL3_ST_CR_SESSION_TICKET_A
;
464 s
->s3
->tmp
.next_state
=SSL3_ST_CR_FINISHED_A
;
469 #ifndef OPENSSL_NO_TLSEXT
470 case SSL3_ST_CR_SESSION_TICKET_A
:
471 case SSL3_ST_CR_SESSION_TICKET_B
:
472 ret
=ssl3_get_new_session_ticket(s
);
473 if (ret
<= 0) goto end
;
474 s
->state
=SSL3_ST_CR_FINISHED_A
;
478 case SSL3_ST_CR_CERT_STATUS_A
:
479 case SSL3_ST_CR_CERT_STATUS_B
:
480 ret
=ssl3_get_cert_status(s
);
481 if (ret
<= 0) goto end
;
482 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
487 case SSL3_ST_CR_FINISHED_A
:
488 case SSL3_ST_CR_FINISHED_B
:
490 ret
=ssl3_get_finished(s
,SSL3_ST_CR_FINISHED_A
,
491 SSL3_ST_CR_FINISHED_B
);
492 if (ret
<= 0) goto end
;
495 s
->state
=SSL3_ST_CW_CHANGE_A
;
501 case SSL3_ST_CW_FLUSH
:
502 /* number of bytes to be flushed */
503 num1
=BIO_ctrl(s
->wbio
,BIO_CTRL_INFO
,0,NULL
);
506 s
->rwstate
=SSL_WRITING
;
507 num1
=BIO_flush(s
->wbio
);
508 if (num1
<= 0) { ret
= -1; goto end
; }
509 s
->rwstate
=SSL_NOTHING
;
512 s
->state
=s
->s3
->tmp
.next_state
;
516 /* clean a few things up */
517 ssl3_cleanup_key_block(s
);
519 if (s
->init_buf
!= NULL
)
521 BUF_MEM_free(s
->init_buf
);
525 /* If we are not 'joining' the last two packets,
526 * remove the buffering now */
527 if (!(s
->s3
->flags
& SSL3_FLAGS_POP_BUFFER
))
528 ssl_free_wbio_buffer(s
);
529 /* else do it later in ssl3_write */
534 ssl_update_cache(s
,SSL_SESS_CACHE_CLIENT
);
535 if (s
->hit
) s
->ctx
->stats
.sess_hit
++;
539 s
->handshake_func
=ssl3_connect
;
540 s
->ctx
->stats
.sess_connect_good
++;
542 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_DONE
,1);
548 SSLerr(SSL_F_SSL3_CONNECT
,SSL_R_UNKNOWN_STATE
);
554 /* did we do anything */
555 if (!s
->s3
->tmp
.reuse_message
&& !skip
)
559 if ((ret
=BIO_flush(s
->wbio
)) <= 0)
563 if ((cb
!= NULL
) && (s
->state
!= state
))
567 cb(s
,SSL_CB_CONNECT_LOOP
,1);
578 cb(s
,SSL_CB_CONNECT_EXIT
,ret
);
583 int ssl3_client_hello(SSL
*s
)
588 unsigned long Time
,l
;
589 #ifndef OPENSSL_NO_COMP
594 buf
=(unsigned char *)s
->init_buf
->data
;
595 if (s
->state
== SSL3_ST_CW_CLNT_HELLO_A
)
597 if ((s
->session
== NULL
) ||
598 (s
->session
->ssl_version
!= s
->version
) ||
599 (s
->session
->not_resumable
))
601 if (!ssl_get_new_session(s
,0))
604 /* else use the pre-loaded session */
606 p
=s
->s3
->client_random
;
607 Time
=(unsigned long)time(NULL
); /* Time */
609 if (RAND_pseudo_bytes(p
,SSL3_RANDOM_SIZE
-4) <= 0)
612 /* Do the message type and length last */
615 *(p
++)=s
->version
>>8;
616 *(p
++)=s
->version
&0xff;
617 s
->client_version
=s
->version
;
620 memcpy(p
,s
->s3
->client_random
,SSL3_RANDOM_SIZE
);
627 i
=s
->session
->session_id_length
;
631 if (i
> (int)sizeof(s
->session
->session_id
))
633 SSLerr(SSL_F_SSL3_CLIENT_HELLO
, ERR_R_INTERNAL_ERROR
);
636 memcpy(p
,s
->session
->session_id
,i
);
640 /* Ciphers supported */
641 i
=ssl_cipher_list_to_bytes(s
,SSL_get_ciphers(s
),&(p
[2]),0);
644 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,SSL_R_NO_CIPHERS_AVAILABLE
);
651 #ifdef OPENSSL_NO_COMP
654 if (s
->ctx
->comp_methods
== NULL
)
657 j
=sk_SSL_COMP_num(s
->ctx
->comp_methods
);
661 comp
=sk_SSL_COMP_value(s
->ctx
->comp_methods
,i
);
665 *(p
++)=0; /* Add the NULL method */
666 #ifndef OPENSSL_NO_TLSEXT
667 if ((p
= ssl_add_clienthello_tlsext(s
, p
, buf
+SSL3_RT_MAX_PLAIN_LENGTH
)) == NULL
)
669 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,ERR_R_INTERNAL_ERROR
);
675 *(d
++)=SSL3_MT_CLIENT_HELLO
;
678 s
->state
=SSL3_ST_CW_CLNT_HELLO_B
;
679 /* number of bytes to write */
684 /* SSL3_ST_CW_CLNT_HELLO_B */
685 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
690 int ssl3_get_server_hello(SSL
*s
)
692 STACK_OF(SSL_CIPHER
) *sk
;
698 #ifndef OPENSSL_NO_COMP
702 n
=s
->method
->ssl_get_message(s
,
703 SSL3_ST_CR_SRVR_HELLO_A
,
704 SSL3_ST_CR_SRVR_HELLO_B
,
709 if (!ok
) return((int)n
);
711 if ( SSL_version(s
) == DTLS1_VERSION
)
713 if ( s
->s3
->tmp
.message_type
== DTLS1_MT_HELLO_VERIFY_REQUEST
)
715 if ( s
->d1
->send_cookie
== 0)
717 s
->s3
->tmp
.reuse_message
= 1;
720 else /* already sent a cookie */
722 al
=SSL_AD_UNEXPECTED_MESSAGE
;
723 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_MESSAGE_TYPE
);
729 if ( s
->s3
->tmp
.message_type
!= SSL3_MT_SERVER_HELLO
)
731 al
=SSL_AD_UNEXPECTED_MESSAGE
;
732 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_MESSAGE_TYPE
);
736 d
=p
=(unsigned char *)s
->init_msg
;
738 if ((p
[0] != (s
->version
>>8)) || (p
[1] != (s
->version
&0xff)))
740 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_SSL_VERSION
);
741 s
->version
=(s
->version
&0xff00)|p
[1];
742 al
=SSL_AD_PROTOCOL_VERSION
;
747 /* load the server hello data */
748 /* load the server random */
749 memcpy(s
->s3
->server_random
,p
,SSL3_RANDOM_SIZE
);
752 /* get the session-id */
755 if ((j
> sizeof s
->session
->session_id
) || (j
> SSL3_SESSION_ID_SIZE
))
757 al
=SSL_AD_ILLEGAL_PARAMETER
;
758 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_SSL3_SESSION_ID_TOO_LONG
);
762 if (j
!= 0 && j
== s
->session
->session_id_length
763 && memcmp(p
,s
->session
->session_id
,j
) == 0)
765 if(s
->sid_ctx_length
!= s
->session
->sid_ctx_length
766 || memcmp(s
->session
->sid_ctx
,s
->sid_ctx
,s
->sid_ctx_length
))
768 /* actually a client application bug */
769 al
=SSL_AD_ILLEGAL_PARAMETER
;
770 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT
);
775 else /* a miss or crap from the other end */
777 /* If we were trying for session-id reuse, make a new
778 * SSL_SESSION so we don't stuff up other people */
780 if (s
->session
->session_id_length
> 0)
782 if (!ssl_get_new_session(s
,0))
784 al
=SSL_AD_INTERNAL_ERROR
;
788 s
->session
->session_id_length
=j
;
789 memcpy(s
->session
->session_id
,p
,j
); /* j could be 0 */
792 c
=ssl_get_cipher_by_char(s
,p
);
796 al
=SSL_AD_ILLEGAL_PARAMETER
;
797 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNKNOWN_CIPHER_RETURNED
);
800 p
+=ssl_put_cipher_by_char(s
,NULL
,NULL
);
802 sk
=ssl_get_ciphers_by_id(s
);
803 i
=sk_SSL_CIPHER_find(sk
,c
);
806 /* we did not say we would use this cipher */
807 al
=SSL_AD_ILLEGAL_PARAMETER
;
808 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_CIPHER_RETURNED
);
812 /* Depending on the session caching (internal/external), the cipher
813 and/or cipher_id values may not be set. Make sure that
814 cipher_id is set and use it for comparison. */
815 if (s
->session
->cipher
)
816 s
->session
->cipher_id
= s
->session
->cipher
->id
;
817 if (s
->hit
&& (s
->session
->cipher_id
!= c
->id
))
820 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
))
822 al
=SSL_AD_ILLEGAL_PARAMETER
;
823 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED
);
827 s
->s3
->tmp
.new_cipher
=c
;
829 /* lets get the compression algorithm */
831 #ifdef OPENSSL_NO_COMP
834 al
=SSL_AD_ILLEGAL_PARAMETER
;
835 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
843 comp
=ssl3_comp_find(s
->ctx
->comp_methods
,j
);
845 if ((j
!= 0) && (comp
== NULL
))
847 al
=SSL_AD_ILLEGAL_PARAMETER
;
848 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
853 s
->s3
->tmp
.new_compression
=comp
;
856 #ifndef OPENSSL_NO_TLSEXT
858 if (s
->version
> SSL3_VERSION
)
860 if (!ssl_parse_serverhello_tlsext(s
,&p
,d
,n
, &al
))
862 /* 'al' set by ssl_parse_serverhello_tlsext */
863 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_PARSE_TLSEXT
);
866 if (ssl_check_serverhello_tlsext(s
) <= 0)
868 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_SERVERHELLO_TLSEXT
);
877 /* wrong packet length */
878 al
=SSL_AD_DECODE_ERROR
;
879 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_PACKET_LENGTH
);
885 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
890 int ssl3_get_server_certificate(SSL
*s
)
893 unsigned long n
,nc
,llen
,l
;
895 const unsigned char *q
,*p
;
897 STACK_OF(X509
) *sk
=NULL
;
900 int need_cert
= 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
902 n
=s
->method
->ssl_get_message(s
,
909 if (!ok
) return((int)n
);
911 if ((s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_KEY_EXCHANGE
) ||
912 ((s
->s3
->tmp
.new_cipher
->algorithms
& SSL_aKRB5
) &&
913 (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_DONE
)))
915 s
->s3
->tmp
.reuse_message
=1;
919 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE
)
921 al
=SSL_AD_UNEXPECTED_MESSAGE
;
922 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_BAD_MESSAGE_TYPE
);
925 p
=d
=(unsigned char *)s
->init_msg
;
927 if ((sk
=sk_X509_new_null()) == NULL
)
929 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
936 al
=SSL_AD_DECODE_ERROR
;
937 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_LENGTH_MISMATCH
);
940 for (nc
=0; nc
<llen
; )
945 al
=SSL_AD_DECODE_ERROR
;
946 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
951 x
=d2i_X509(NULL
,&q
,l
);
954 al
=SSL_AD_BAD_CERTIFICATE
;
955 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_ASN1_LIB
);
960 al
=SSL_AD_DECODE_ERROR
;
961 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
964 if (!sk_X509_push(sk
,x
))
966 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
974 i
=ssl_verify_cert_chain(s
,sk
);
975 if ((s
->verify_mode
!= SSL_VERIFY_NONE
) && (i
<= 0)
976 #ifndef OPENSSL_NO_KRB5
977 && (s
->s3
->tmp
.new_cipher
->algorithms
& (SSL_MKEY_MASK
|SSL_AUTH_MASK
))
978 != (SSL_aKRB5
|SSL_kKRB5
)
979 #endif /* OPENSSL_NO_KRB5 */
982 al
=ssl_verify_alarm_type(s
->verify_result
);
983 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERTIFICATE_VERIFY_FAILED
);
986 ERR_clear_error(); /* but we keep s->verify_result */
988 sc
=ssl_sess_cert_new();
989 if (sc
== NULL
) goto err
;
991 if (s
->session
->sess_cert
) ssl_sess_cert_free(s
->session
->sess_cert
);
992 s
->session
->sess_cert
=sc
;
995 /* Inconsistency alert: cert_chain does include the peer's
996 * certificate, which we don't include in s3_srvr.c */
997 x
=sk_X509_value(sk
,0);
999 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1001 pkey
=X509_get_pubkey(x
);
1003 /* VRS: allow null cert if auth == KRB5 */
1004 need_cert
= ((s
->s3
->tmp
.new_cipher
->algorithms
1005 & (SSL_MKEY_MASK
|SSL_AUTH_MASK
))
1006 == (SSL_aKRB5
|SSL_kKRB5
))? 0: 1;
1009 printf("pkey,x = %p, %p\n", (void *)pkey
,(void *)x
);
1010 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x
,pkey
));
1011 printf("cipher, alg, nc = %s, %lx, %d\n", s
->s3
->tmp
.new_cipher
->name
,
1012 s
->s3
->tmp
.new_cipher
->algorithms
, need_cert
);
1013 #endif /* KSSL_DEBUG */
1015 if (need_cert
&& ((pkey
== NULL
) || EVP_PKEY_missing_parameters(pkey
)))
1019 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
1020 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS
);
1024 i
=ssl_cert_type(x
,pkey
);
1025 if (need_cert
&& i
< 0)
1029 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
1030 SSL_R_UNKNOWN_CERTIFICATE_TYPE
);
1036 sc
->peer_cert_type
=i
;
1037 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
1038 /* Why would the following ever happen?
1039 * We just created sc a couple of lines ago. */
1040 if (sc
->peer_pkeys
[i
].x509
!= NULL
)
1041 X509_free(sc
->peer_pkeys
[i
].x509
);
1042 sc
->peer_pkeys
[i
].x509
=x
;
1043 sc
->peer_key
= &(sc
->peer_pkeys
[i
]);
1045 if (s
->session
->peer
!= NULL
)
1046 X509_free(s
->session
->peer
);
1047 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
1052 sc
->peer_cert_type
=i
;
1055 if (s
->session
->peer
!= NULL
)
1056 X509_free(s
->session
->peer
);
1057 s
->session
->peer
=NULL
;
1059 s
->session
->verify_result
= s
->verify_result
;
1067 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1070 EVP_PKEY_free(pkey
);
1072 sk_X509_pop_free(sk
,X509_free
);
1076 int ssl3_get_key_exchange(SSL
*s
)
1078 #ifndef OPENSSL_NO_RSA
1079 unsigned char *q
,md_buf
[EVP_MAX_MD_SIZE
*2];
1082 unsigned char *param
,*p
;
1083 int al
,i
,j
,param_len
,ok
;
1085 EVP_PKEY
*pkey
=NULL
;
1086 #ifndef OPENSSL_NO_RSA
1089 #ifndef OPENSSL_NO_DH
1092 #ifndef OPENSSL_NO_ECDH
1093 EC_KEY
*ecdh
= NULL
;
1094 BN_CTX
*bn_ctx
= NULL
;
1095 EC_POINT
*srvr_ecpoint
= NULL
;
1097 int encoded_pt_len
= 0;
1100 /* use same message size as in ssl3_get_certificate_request()
1101 * as ServerKeyExchange message may be skipped */
1102 n
=s
->method
->ssl_get_message(s
,
1103 SSL3_ST_CR_KEY_EXCH_A
,
1104 SSL3_ST_CR_KEY_EXCH_B
,
1109 if (!ok
) return((int)n
);
1111 if (s
->s3
->tmp
.message_type
!= SSL3_MT_SERVER_KEY_EXCHANGE
)
1113 s
->s3
->tmp
.reuse_message
=1;
1117 param
=p
=(unsigned char *)s
->init_msg
;
1119 if (s
->session
->sess_cert
!= NULL
)
1121 #ifndef OPENSSL_NO_RSA
1122 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
1124 RSA_free(s
->session
->sess_cert
->peer_rsa_tmp
);
1125 s
->session
->sess_cert
->peer_rsa_tmp
=NULL
;
1128 #ifndef OPENSSL_NO_DH
1129 if (s
->session
->sess_cert
->peer_dh_tmp
)
1131 DH_free(s
->session
->sess_cert
->peer_dh_tmp
);
1132 s
->session
->sess_cert
->peer_dh_tmp
=NULL
;
1135 #ifndef OPENSSL_NO_ECDH
1136 if (s
->session
->sess_cert
->peer_ecdh_tmp
)
1138 EC_KEY_free(s
->session
->sess_cert
->peer_ecdh_tmp
);
1139 s
->session
->sess_cert
->peer_ecdh_tmp
=NULL
;
1145 s
->session
->sess_cert
=ssl_sess_cert_new();
1149 alg
=s
->s3
->tmp
.new_cipher
->algorithms
;
1150 EVP_MD_CTX_init(&md_ctx
);
1152 #ifndef OPENSSL_NO_RSA
1155 if ((rsa
=RSA_new()) == NULL
)
1157 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1164 al
=SSL_AD_DECODE_ERROR
;
1165 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_MODULUS_LENGTH
);
1168 if (!(rsa
->n
=BN_bin2bn(p
,i
,rsa
->n
)))
1170 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1179 al
=SSL_AD_DECODE_ERROR
;
1180 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_E_LENGTH
);
1183 if (!(rsa
->e
=BN_bin2bn(p
,i
,rsa
->e
)))
1185 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1191 /* this should be because we are using an export cipher */
1193 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1196 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1199 s
->session
->sess_cert
->peer_rsa_tmp
=rsa
;
1202 #else /* OPENSSL_NO_RSA */
1206 #ifndef OPENSSL_NO_DH
1207 else if (alg
& SSL_kEDH
)
1209 if ((dh
=DH_new()) == NULL
)
1211 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1218 al
=SSL_AD_DECODE_ERROR
;
1219 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_P_LENGTH
);
1222 if (!(dh
->p
=BN_bin2bn(p
,i
,NULL
)))
1224 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1233 al
=SSL_AD_DECODE_ERROR
;
1234 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_G_LENGTH
);
1237 if (!(dh
->g
=BN_bin2bn(p
,i
,NULL
)))
1239 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1248 al
=SSL_AD_DECODE_ERROR
;
1249 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_PUB_KEY_LENGTH
);
1252 if (!(dh
->pub_key
=BN_bin2bn(p
,i
,NULL
)))
1254 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1260 #ifndef OPENSSL_NO_RSA
1262 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1267 #ifndef OPENSSL_NO_DSA
1268 else if (alg
& SSL_aDSS
)
1269 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_DSA_SIGN
].x509
);
1271 /* else anonymous DH, so no certificate or pkey. */
1273 s
->session
->sess_cert
->peer_dh_tmp
=dh
;
1276 else if ((alg
& SSL_kDHr
) || (alg
& SSL_kDHd
))
1278 al
=SSL_AD_ILLEGAL_PARAMETER
;
1279 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER
);
1282 #endif /* !OPENSSL_NO_DH */
1284 #ifndef OPENSSL_NO_ECDH
1285 else if (alg
& SSL_kECDHE
)
1288 const EC_GROUP
*group
;
1290 if ((ecdh
=EC_KEY_new()) == NULL
)
1292 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1296 /* Extract elliptic curve parameters and the
1297 * server's ephemeral ECDH public key.
1298 * Keep accumulating lengths of various components in
1299 * param_len and make sure it never exceeds n.
1302 /* XXX: For now we only support named (not generic) curves
1303 * and the ECParameters in this case is just three bytes.
1306 if ((param_len
> n
) ||
1307 (*p
!= NAMED_CURVE_TYPE
) ||
1308 ((curve_nid
= curve_id2nid(*(p
+ 2))) == 0))
1310 al
=SSL_AD_INTERNAL_ERROR
;
1311 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS
);
1315 ngroup
= EC_GROUP_new_by_curve_name(curve_nid
);
1318 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_EC_LIB
);
1321 if (EC_KEY_set_group(ecdh
, ngroup
) == 0)
1323 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_EC_LIB
);
1326 EC_GROUP_free(ngroup
);
1328 group
= EC_KEY_get0_group(ecdh
);
1330 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) &&
1331 (EC_GROUP_get_degree(group
) > 163))
1333 al
=SSL_AD_EXPORT_RESTRICTION
;
1334 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER
);
1340 /* Next, get the encoded ECPoint */
1341 if (((srvr_ecpoint
= EC_POINT_new(group
)) == NULL
) ||
1342 ((bn_ctx
= BN_CTX_new()) == NULL
))
1344 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1348 encoded_pt_len
= *p
; /* length of encoded point */
1350 param_len
+= (1 + encoded_pt_len
);
1351 if ((param_len
> n
) ||
1352 (EC_POINT_oct2point(group
, srvr_ecpoint
,
1353 p
, encoded_pt_len
, bn_ctx
) == 0))
1355 al
=SSL_AD_DECODE_ERROR
;
1356 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_ECPOINT
);
1363 /* The ECC/TLS specification does not mention
1364 * the use of DSA to sign ECParameters in the server
1365 * key exchange message. We do support RSA and ECDSA.
1368 #ifndef OPENSSL_NO_RSA
1369 else if (alg
& SSL_aRSA
)
1370 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1372 #ifndef OPENSSL_NO_ECDSA
1373 else if (alg
& SSL_aECDSA
)
1374 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_ECC
].x509
);
1376 /* else anonymous ECDH, so no certificate or pkey. */
1377 EC_KEY_set_public_key(ecdh
, srvr_ecpoint
);
1378 s
->session
->sess_cert
->peer_ecdh_tmp
=ecdh
;
1380 BN_CTX_free(bn_ctx
);
1381 EC_POINT_free(srvr_ecpoint
);
1382 srvr_ecpoint
= NULL
;
1384 else if (alg
& SSL_kECDH
)
1386 al
=SSL_AD_UNEXPECTED_MESSAGE
;
1387 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNEXPECTED_MESSAGE
);
1390 #endif /* !OPENSSL_NO_ECDH */
1393 al
=SSL_AD_HANDSHAKE_FAILURE
;
1394 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER
);
1399 /* p points to the next byte, there are 'n' bytes left */
1401 /* if it was signed, check the signature */
1406 j
=EVP_PKEY_size(pkey
);
1408 if ((i
!= n
) || (n
> j
) || (n
<= 0))
1410 /* wrong packet length */
1411 al
=SSL_AD_DECODE_ERROR
;
1412 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_WRONG_SIGNATURE_LENGTH
);
1416 #ifndef OPENSSL_NO_RSA
1417 if (pkey
->type
== EVP_PKEY_RSA
)
1423 for (num
=2; num
> 0; num
--)
1425 EVP_MD_CTX_set_flags(&md_ctx
,
1426 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW
);
1427 EVP_DigestInit_ex(&md_ctx
,(num
== 2)
1428 ?s
->ctx
->md5
:s
->ctx
->sha1
, NULL
);
1429 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1430 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1431 EVP_DigestUpdate(&md_ctx
,param
,param_len
);
1432 EVP_DigestFinal_ex(&md_ctx
,q
,(unsigned int *)&i
);
1436 i
=RSA_verify(NID_md5_sha1
, md_buf
, j
, p
, n
,
1440 al
=SSL_AD_DECRYPT_ERROR
;
1441 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_DECRYPT
);
1447 al
=SSL_AD_DECRYPT_ERROR
;
1448 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1454 #ifndef OPENSSL_NO_DSA
1455 if (pkey
->type
== EVP_PKEY_DSA
)
1458 EVP_VerifyInit_ex(&md_ctx
,EVP_dss1(), NULL
);
1459 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1460 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1461 EVP_VerifyUpdate(&md_ctx
,param
,param_len
);
1462 if (EVP_VerifyFinal(&md_ctx
,p
,(int)n
,pkey
) <= 0)
1465 al
=SSL_AD_DECRYPT_ERROR
;
1466 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1472 #ifndef OPENSSL_NO_ECDSA
1473 if (pkey
->type
== EVP_PKEY_EC
)
1475 /* let's do ECDSA */
1476 EVP_VerifyInit_ex(&md_ctx
,EVP_ecdsa(), NULL
);
1477 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1478 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1479 EVP_VerifyUpdate(&md_ctx
,param
,param_len
);
1480 if (EVP_VerifyFinal(&md_ctx
,p
,(int)n
,pkey
) <= 0)
1483 al
=SSL_AD_DECRYPT_ERROR
;
1484 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1491 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1497 /* still data left over */
1498 if (!(alg
& SSL_aNULL
))
1500 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1505 al
=SSL_AD_DECODE_ERROR
;
1506 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_EXTRA_DATA_IN_MESSAGE
);
1510 EVP_PKEY_free(pkey
);
1511 EVP_MD_CTX_cleanup(&md_ctx
);
1514 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1516 EVP_PKEY_free(pkey
);
1517 #ifndef OPENSSL_NO_RSA
1521 #ifndef OPENSSL_NO_DH
1525 #ifndef OPENSSL_NO_ECDH
1526 BN_CTX_free(bn_ctx
);
1527 EC_POINT_free(srvr_ecpoint
);
1531 EVP_MD_CTX_cleanup(&md_ctx
);
1535 int ssl3_get_certificate_request(SSL
*s
)
1538 unsigned long n
,nc
,l
;
1539 unsigned int llen
,ctype_num
,i
;
1541 const unsigned char *p
,*q
;
1543 STACK_OF(X509_NAME
) *ca_sk
=NULL
;
1545 n
=s
->method
->ssl_get_message(s
,
1546 SSL3_ST_CR_CERT_REQ_A
,
1547 SSL3_ST_CR_CERT_REQ_B
,
1552 if (!ok
) return((int)n
);
1554 s
->s3
->tmp
.cert_req
=0;
1556 if (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_DONE
)
1558 s
->s3
->tmp
.reuse_message
=1;
1562 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE_REQUEST
)
1564 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
1565 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_WRONG_MESSAGE_TYPE
);
1569 /* TLS does not like anon-DH with client cert */
1570 if (s
->version
> SSL3_VERSION
)
1572 l
=s
->s3
->tmp
.new_cipher
->algorithms
;
1575 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
1576 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER
);
1581 p
=d
=(unsigned char *)s
->init_msg
;
1583 if ((ca_sk
=sk_X509_NAME_new(ca_dn_cmp
)) == NULL
)
1585 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
1589 /* get the certificate types */
1591 if (ctype_num
> SSL3_CT_NUMBER
)
1592 ctype_num
=SSL3_CT_NUMBER
;
1593 for (i
=0; i
<ctype_num
; i
++)
1594 s
->s3
->tmp
.ctype
[i
]= p
[i
];
1597 /* get the CA RDNs */
1602 out
=fopen("/tmp/vsign.der","w");
1603 fwrite(p
,1,llen
,out
);
1608 if ((llen
+ctype_num
+2+1) != n
)
1610 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1611 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_LENGTH_MISMATCH
);
1615 for (nc
=0; nc
<llen
; )
1618 if ((l
+nc
+2) > llen
)
1620 if ((s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
))
1621 goto cont
; /* netscape bugs */
1622 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1623 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_TOO_LONG
);
1629 if ((xn
=d2i_X509_NAME(NULL
,&q
,l
)) == NULL
)
1631 /* If netscape tolerance is on, ignore errors */
1632 if (s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
)
1636 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1637 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_ASN1_LIB
);
1644 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1645 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_LENGTH_MISMATCH
);
1648 if (!sk_X509_NAME_push(ca_sk
,xn
))
1650 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
1664 /* we should setup a certificate to return.... */
1665 s
->s3
->tmp
.cert_req
=1;
1666 s
->s3
->tmp
.ctype_num
=ctype_num
;
1667 if (s
->s3
->tmp
.ca_names
!= NULL
)
1668 sk_X509_NAME_pop_free(s
->s3
->tmp
.ca_names
,X509_NAME_free
);
1669 s
->s3
->tmp
.ca_names
=ca_sk
;
1674 if (ca_sk
!= NULL
) sk_X509_NAME_pop_free(ca_sk
,X509_NAME_free
);
1678 static int ca_dn_cmp(const X509_NAME
* const *a
, const X509_NAME
* const *b
)
1680 return(X509_NAME_cmp(*a
,*b
));
1682 #ifndef OPENSSL_NO_TLSEXT
1683 int ssl3_get_new_session_ticket(SSL
*s
)
1685 int ok
,al
,ret
=0, ticklen
;
1687 const unsigned char *p
;
1690 n
=s
->method
->ssl_get_message(s
,
1691 SSL3_ST_CR_SESSION_TICKET_A
,
1692 SSL3_ST_CR_SESSION_TICKET_B
,
1700 if (s
->s3
->tmp
.message_type
== SSL3_MT_FINISHED
)
1702 s
->s3
->tmp
.reuse_message
=1;
1705 if (s
->s3
->tmp
.message_type
!= SSL3_MT_NEWSESSION_TICKET
)
1707 al
=SSL_AD_UNEXPECTED_MESSAGE
;
1708 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_BAD_MESSAGE_TYPE
);
1713 /* need at least ticket_lifetime_hint + ticket length */
1714 al
= SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
;
1715 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_LENGTH_MISMATCH
);
1718 p
=d
=(unsigned char *)s
->init_msg
;
1719 n2l(p
, s
->session
->tlsext_tick_lifetime_hint
);
1721 /* ticket_lifetime_hint + ticket_length + ticket */
1722 if (ticklen
+ 6 != n
)
1724 al
= SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
;
1725 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_LENGTH_MISMATCH
);
1728 if (s
->session
->tlsext_tick
)
1730 OPENSSL_free(s
->session
->tlsext_tick
);
1731 s
->session
->tlsext_ticklen
= 0;
1733 s
->session
->tlsext_tick
= OPENSSL_malloc(ticklen
);
1734 if (!s
->session
->tlsext_tick
)
1736 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,ERR_R_MALLOC_FAILURE
);
1739 memcpy(s
->session
->tlsext_tick
, p
, ticklen
);
1740 s
->session
->tlsext_ticklen
= ticklen
;
1745 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1750 int ssl3_get_cert_status(SSL
*s
)
1753 unsigned long resplen
;
1755 const unsigned char *p
;
1757 n
=s
->method
->ssl_get_message(s
,
1758 SSL3_ST_CR_CERT_STATUS_A
,
1759 SSL3_ST_CR_CERT_STATUS_B
,
1760 SSL3_MT_CERTIFICATE_STATUS
,
1764 if (!ok
) return((int)n
);
1767 /* need at least status type + length */
1768 al
= SSL_AD_DECODE_ERROR
;
1769 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_LENGTH_MISMATCH
);
1772 p
= (unsigned char *)s
->init_msg
;
1773 if (*p
++ != TLSEXT_STATUSTYPE_ocsp
)
1775 al
= SSL_AD_DECODE_ERROR
;
1776 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_UNSUPPORTED_STATUS_TYPE
);
1780 if (resplen
+ 4 != (unsigned long)n
)
1782 al
= SSL_AD_DECODE_ERROR
;
1783 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_LENGTH_MISMATCH
);
1786 if (s
->tlsext_ocsp_resp
)
1787 OPENSSL_free(s
->tlsext_ocsp_resp
);
1788 s
->tlsext_ocsp_resp
= BUF_memdup(p
, resplen
);
1789 if (!s
->tlsext_ocsp_resp
)
1791 al
= SSL_AD_INTERNAL_ERROR
;
1792 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,ERR_R_MALLOC_FAILURE
);
1795 s
->tlsext_ocsp_resplen
= resplen
;
1796 if (s
->ctx
->tlsext_status_cb
)
1799 ret
= s
->ctx
->tlsext_status_cb(s
, s
->ctx
->tlsext_status_arg
);
1802 al
= SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE
;
1803 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,SSL_R_INVALID_STATUS_RESPONSE
);
1808 al
= SSL_AD_INTERNAL_ERROR
;
1809 SSLerr(SSL_F_SSL3_GET_CERT_STATUS
,ERR_R_MALLOC_FAILURE
);
1815 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1820 int ssl3_get_server_done(SSL
*s
)
1825 n
=s
->method
->ssl_get_message(s
,
1826 SSL3_ST_CR_SRVR_DONE_A
,
1827 SSL3_ST_CR_SRVR_DONE_B
,
1828 SSL3_MT_SERVER_DONE
,
1829 30, /* should be very small, like 0 :-) */
1832 if (!ok
) return((int)n
);
1835 /* should contain no data */
1836 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1837 SSLerr(SSL_F_SSL3_GET_SERVER_DONE
,SSL_R_LENGTH_MISMATCH
);
1845 int ssl3_send_client_key_exchange(SSL
*s
)
1847 unsigned char *p
,*d
;
1850 #ifndef OPENSSL_NO_RSA
1852 EVP_PKEY
*pkey
=NULL
;
1854 #ifndef OPENSSL_NO_KRB5
1856 #endif /* OPENSSL_NO_KRB5 */
1857 #ifndef OPENSSL_NO_ECDH
1858 EC_KEY
*clnt_ecdh
= NULL
;
1859 const EC_POINT
*srvr_ecpoint
= NULL
;
1860 EVP_PKEY
*srvr_pub_pkey
= NULL
;
1861 unsigned char *encodedPoint
= NULL
;
1862 int encoded_pt_len
= 0;
1863 BN_CTX
* bn_ctx
= NULL
;
1866 if (s
->state
== SSL3_ST_CW_KEY_EXCH_A
)
1868 d
=(unsigned char *)s
->init_buf
->data
;
1871 l
=s
->s3
->tmp
.new_cipher
->algorithms
;
1873 /* Fool emacs indentation */
1875 #ifndef OPENSSL_NO_RSA
1876 else if (l
& SSL_kRSA
)
1879 unsigned char tmp_buf
[SSL_MAX_MASTER_KEY_LENGTH
];
1881 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
1882 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
1885 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1886 if ((pkey
== NULL
) ||
1887 (pkey
->type
!= EVP_PKEY_RSA
) ||
1888 (pkey
->pkey
.rsa
== NULL
))
1890 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1894 EVP_PKEY_free(pkey
);
1897 tmp_buf
[0]=s
->client_version
>>8;
1898 tmp_buf
[1]=s
->client_version
&0xff;
1899 if (RAND_bytes(&(tmp_buf
[2]),sizeof tmp_buf
-2) <= 0)
1902 s
->session
->master_key_length
=sizeof tmp_buf
;
1905 /* Fix buf for TLS and beyond */
1906 if (s
->version
> SSL3_VERSION
)
1908 n
=RSA_public_encrypt(sizeof tmp_buf
,
1909 tmp_buf
,p
,rsa
,RSA_PKCS1_PADDING
);
1911 if (s
->options
& SSL_OP_PKCS1_CHECK_1
) p
[1]++;
1912 if (s
->options
& SSL_OP_PKCS1_CHECK_2
) tmp_buf
[0]=0x70;
1916 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_BAD_RSA_ENCRYPT
);
1920 /* Fix buf for TLS and beyond */
1921 if (s
->version
> SSL3_VERSION
)
1927 s
->session
->master_key_length
=
1928 s
->method
->ssl3_enc
->generate_master_secret(s
,
1929 s
->session
->master_key
,
1930 tmp_buf
,sizeof tmp_buf
);
1931 OPENSSL_cleanse(tmp_buf
,sizeof tmp_buf
);
1934 #ifndef OPENSSL_NO_KRB5
1935 else if (l
& SSL_kKRB5
)
1937 krb5_error_code krb5rc
;
1938 KSSL_CTX
*kssl_ctx
= s
->kssl_ctx
;
1939 /* krb5_data krb5_ap_req; */
1940 krb5_data
*enc_ticket
;
1941 krb5_data authenticator
, *authp
= NULL
;
1942 EVP_CIPHER_CTX ciph_ctx
;
1943 EVP_CIPHER
*enc
= NULL
;
1944 unsigned char iv
[EVP_MAX_IV_LENGTH
];
1945 unsigned char tmp_buf
[SSL_MAX_MASTER_KEY_LENGTH
];
1946 unsigned char epms
[SSL_MAX_MASTER_KEY_LENGTH
1947 + EVP_MAX_IV_LENGTH
];
1948 int padl
, outl
= sizeof(epms
);
1950 EVP_CIPHER_CTX_init(&ciph_ctx
);
1953 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1955 #endif /* KSSL_DEBUG */
1959 if (KRB5SENDAUTH
) authp
= &authenticator
;
1960 #endif /* KRB5SENDAUTH */
1962 krb5rc
= kssl_cget_tkt(kssl_ctx
, &enc_ticket
, authp
,
1964 enc
= kssl_map_enc(kssl_ctx
->enctype
);
1969 printf("kssl_cget_tkt rtn %d\n", krb5rc
);
1970 if (krb5rc
&& kssl_err
.text
)
1971 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err
.text
);
1973 #endif /* KSSL_DEBUG */
1977 ssl3_send_alert(s
,SSL3_AL_FATAL
,
1978 SSL_AD_HANDSHAKE_FAILURE
);
1979 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
1984 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
1985 ** in place of RFC 2712 KerberosWrapper, as in:
1987 ** Send ticket (copy to *p, set n = length)
1988 ** n = krb5_ap_req.length;
1989 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1990 ** if (krb5_ap_req.data)
1991 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1993 ** Now using real RFC 2712 KerberosWrapper
1994 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
1995 ** Note: 2712 "opaque" types are here replaced
1996 ** with a 2-byte length followed by the value.
1998 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
1999 ** Where "xx xx" = length bytes. Shown here with
2000 ** optional authenticator omitted.
2003 /* KerberosWrapper.Ticket */
2004 s2n(enc_ticket
->length
,p
);
2005 memcpy(p
, enc_ticket
->data
, enc_ticket
->length
);
2006 p
+= enc_ticket
->length
;
2007 n
= enc_ticket
->length
+ 2;
2009 /* KerberosWrapper.Authenticator */
2010 if (authp
&& authp
->length
)
2012 s2n(authp
->length
,p
);
2013 memcpy(p
, authp
->data
, authp
->length
);
2015 n
+= authp
->length
+ 2;
2023 s2n(0,p
);/* null authenticator length */
2027 tmp_buf
[0]=s
->client_version
>>8;
2028 tmp_buf
[1]=s
->client_version
&0xff;
2029 if (RAND_bytes(&(tmp_buf
[2]),sizeof tmp_buf
-2) <= 0)
2032 /* 20010420 VRS. Tried it this way; failed.
2033 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2034 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2035 ** kssl_ctx->length);
2036 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2039 memset(iv
, 0, sizeof iv
); /* per RFC 1510 */
2040 EVP_EncryptInit_ex(&ciph_ctx
,enc
, NULL
,
2042 EVP_EncryptUpdate(&ciph_ctx
,epms
,&outl
,tmp_buf
,
2044 EVP_EncryptFinal_ex(&ciph_ctx
,&(epms
[outl
]),&padl
);
2046 if (outl
> sizeof epms
)
2048 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
2051 EVP_CIPHER_CTX_cleanup(&ciph_ctx
);
2053 /* KerberosWrapper.EncryptedPreMasterSecret */
2055 memcpy(p
, epms
, outl
);
2059 s
->session
->master_key_length
=
2060 s
->method
->ssl3_enc
->generate_master_secret(s
,
2061 s
->session
->master_key
,
2062 tmp_buf
, sizeof tmp_buf
);
2064 OPENSSL_cleanse(tmp_buf
, sizeof tmp_buf
);
2065 OPENSSL_cleanse(epms
, outl
);
2068 #ifndef OPENSSL_NO_DH
2069 else if (l
& (SSL_kEDH
|SSL_kDHr
|SSL_kDHd
))
2071 DH
*dh_srvr
,*dh_clnt
;
2073 if (s
->session
->sess_cert
== NULL
)
2075 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
2076 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_UNEXPECTED_MESSAGE
);
2080 if (s
->session
->sess_cert
->peer_dh_tmp
!= NULL
)
2081 dh_srvr
=s
->session
->sess_cert
->peer_dh_tmp
;
2084 /* we get them from the cert */
2085 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_HANDSHAKE_FAILURE
);
2086 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS
);
2090 /* generate a new random key */
2091 if ((dh_clnt
=DHparams_dup(dh_srvr
)) == NULL
)
2093 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2096 if (!DH_generate_key(dh_clnt
))
2098 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2102 /* use the 'p' output buffer for the DH key, but
2103 * make sure to clear it out afterwards */
2105 n
=DH_compute_key(p
,dh_srvr
->pub_key
,dh_clnt
);
2109 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2113 /* generate master key from the result */
2114 s
->session
->master_key_length
=
2115 s
->method
->ssl3_enc
->generate_master_secret(s
,
2116 s
->session
->master_key
,p
,n
);
2120 /* send off the data */
2121 n
=BN_num_bytes(dh_clnt
->pub_key
);
2123 BN_bn2bin(dh_clnt
->pub_key
,p
);
2128 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2132 #ifndef OPENSSL_NO_ECDH
2133 else if ((l
& SSL_kECDH
) || (l
& SSL_kECDHE
))
2135 const EC_GROUP
*srvr_group
= NULL
;
2137 int ecdh_clnt_cert
= 0;
2140 /* Did we send out the client's
2141 * ECDH share for use in premaster
2142 * computation as part of client certificate?
2143 * If so, set ecdh_clnt_cert to 1.
2145 if ((l
& SSL_kECDH
) && (s
->cert
!= NULL
))
2147 /* XXX: For now, we do not support client
2148 * authentication using ECDH certificates.
2149 * To add such support, one needs to add
2150 * code that checks for appropriate
2151 * conditions and sets ecdh_clnt_cert to 1.
2152 * For example, the cert have an ECC
2153 * key on the same curve as the server's
2154 * and the key should be authorized for
2157 * One also needs to add code in ssl3_connect
2158 * to skip sending the certificate verify
2161 * if ((s->cert->key->privatekey != NULL) &&
2162 * (s->cert->key->privatekey->type ==
2163 * EVP_PKEY_EC) && ...)
2164 * ecdh_clnt_cert = 1;
2168 if (s
->session
->sess_cert
->peer_ecdh_tmp
!= NULL
)
2170 tkey
= s
->session
->sess_cert
->peer_ecdh_tmp
;
2174 /* Get the Server Public Key from Cert */
2175 srvr_pub_pkey
= X509_get_pubkey(s
->session
-> \
2176 sess_cert
->peer_pkeys
[SSL_PKEY_ECC
].x509
);
2177 if ((srvr_pub_pkey
== NULL
) ||
2178 (srvr_pub_pkey
->type
!= EVP_PKEY_EC
) ||
2179 (srvr_pub_pkey
->pkey
.ec
== NULL
))
2181 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2182 ERR_R_INTERNAL_ERROR
);
2186 tkey
= srvr_pub_pkey
->pkey
.ec
;
2189 srvr_group
= EC_KEY_get0_group(tkey
);
2190 srvr_ecpoint
= EC_KEY_get0_public_key(tkey
);
2192 if ((srvr_group
== NULL
) || (srvr_ecpoint
== NULL
))
2194 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2195 ERR_R_INTERNAL_ERROR
);
2199 if ((clnt_ecdh
=EC_KEY_new()) == NULL
)
2201 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2205 if (!EC_KEY_set_group(clnt_ecdh
, srvr_group
))
2207 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_EC_LIB
);
2212 /* Reuse key info from our certificate
2213 * We only need our private key to perform
2214 * the ECDH computation.
2216 const BIGNUM
*priv_key
;
2217 tkey
= s
->cert
->key
->privatekey
->pkey
.ec
;
2218 priv_key
= EC_KEY_get0_private_key(tkey
);
2219 if (priv_key
== NULL
)
2221 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2224 if (!EC_KEY_set_private_key(clnt_ecdh
, priv_key
))
2226 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_EC_LIB
);
2232 /* Generate a new ECDH key pair */
2233 if (!(EC_KEY_generate_key(clnt_ecdh
)))
2235 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
, ERR_R_ECDH_LIB
);
2240 /* use the 'p' output buffer for the ECDH key, but
2241 * make sure to clear it out afterwards
2244 field_size
= EC_GROUP_get_degree(srvr_group
);
2245 if (field_size
<= 0)
2247 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2251 n
=ECDH_compute_key(p
, (field_size
+7)/8, srvr_ecpoint
, clnt_ecdh
, NULL
);
2254 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2259 /* generate master key from the result */
2260 s
->session
->master_key_length
= s
->method
->ssl3_enc \
2261 -> generate_master_secret(s
,
2262 s
->session
->master_key
,
2265 memset(p
, 0, n
); /* clean up */
2269 /* Send empty client key exch message */
2274 /* First check the size of encoding and
2275 * allocate memory accordingly.
2278 EC_POINT_point2oct(srvr_group
,
2279 EC_KEY_get0_public_key(clnt_ecdh
),
2280 POINT_CONVERSION_UNCOMPRESSED
,
2283 encodedPoint
= (unsigned char *)
2284 OPENSSL_malloc(encoded_pt_len
*
2285 sizeof(unsigned char));
2286 bn_ctx
= BN_CTX_new();
2287 if ((encodedPoint
== NULL
) ||
2290 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2294 /* Encode the public key */
2295 n
= EC_POINT_point2oct(srvr_group
,
2296 EC_KEY_get0_public_key(clnt_ecdh
),
2297 POINT_CONVERSION_UNCOMPRESSED
,
2298 encodedPoint
, encoded_pt_len
, bn_ctx
);
2300 *p
= n
; /* length of encoded point */
2301 /* Encoded point will be copied here */
2303 /* copy the point */
2304 memcpy((unsigned char *)p
, encodedPoint
, n
);
2305 /* increment n to account for length field */
2309 /* Free allocated memory */
2310 BN_CTX_free(bn_ctx
);
2311 if (encodedPoint
!= NULL
) OPENSSL_free(encodedPoint
);
2312 if (clnt_ecdh
!= NULL
)
2313 EC_KEY_free(clnt_ecdh
);
2314 EVP_PKEY_free(srvr_pub_pkey
);
2316 #endif /* !OPENSSL_NO_ECDH */
2319 ssl3_send_alert(s
, SSL3_AL_FATAL
,
2320 SSL_AD_HANDSHAKE_FAILURE
);
2321 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2322 ERR_R_INTERNAL_ERROR
);
2326 *(d
++)=SSL3_MT_CLIENT_KEY_EXCHANGE
;
2329 s
->state
=SSL3_ST_CW_KEY_EXCH_B
;
2330 /* number of bytes to write */
2335 /* SSL3_ST_CW_KEY_EXCH_B */
2336 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
2338 #ifndef OPENSSL_NO_ECDH
2339 BN_CTX_free(bn_ctx
);
2340 if (encodedPoint
!= NULL
) OPENSSL_free(encodedPoint
);
2341 if (clnt_ecdh
!= NULL
)
2342 EC_KEY_free(clnt_ecdh
);
2343 EVP_PKEY_free(srvr_pub_pkey
);
2348 int ssl3_send_client_verify(SSL
*s
)
2350 unsigned char *p
,*d
;
2351 unsigned char data
[MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
];
2353 #ifndef OPENSSL_NO_RSA
2357 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2361 if (s
->state
== SSL3_ST_CW_CERT_VRFY_A
)
2363 d
=(unsigned char *)s
->init_buf
->data
;
2365 pkey
=s
->cert
->key
->privatekey
;
2367 s
->method
->ssl3_enc
->cert_verify_mac(s
,&(s
->s3
->finish_dgst2
),
2368 &(data
[MD5_DIGEST_LENGTH
]));
2370 #ifndef OPENSSL_NO_RSA
2371 if (pkey
->type
== EVP_PKEY_RSA
)
2373 s
->method
->ssl3_enc
->cert_verify_mac(s
,
2374 &(s
->s3
->finish_dgst1
),&(data
[0]));
2375 if (RSA_sign(NID_md5_sha1
, data
,
2376 MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
,
2377 &(p
[2]), &u
, pkey
->pkey
.rsa
) <= 0 )
2379 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_RSA_LIB
);
2387 #ifndef OPENSSL_NO_DSA
2388 if (pkey
->type
== EVP_PKEY_DSA
)
2390 if (!DSA_sign(pkey
->save_type
,
2391 &(data
[MD5_DIGEST_LENGTH
]),
2392 SHA_DIGEST_LENGTH
,&(p
[2]),
2393 (unsigned int *)&j
,pkey
->pkey
.dsa
))
2395 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_DSA_LIB
);
2403 #ifndef OPENSSL_NO_ECDSA
2404 if (pkey
->type
== EVP_PKEY_EC
)
2406 if (!ECDSA_sign(pkey
->save_type
,
2407 &(data
[MD5_DIGEST_LENGTH
]),
2408 SHA_DIGEST_LENGTH
,&(p
[2]),
2409 (unsigned int *)&j
,pkey
->pkey
.ec
))
2411 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
2421 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_INTERNAL_ERROR
);
2424 *(d
++)=SSL3_MT_CERTIFICATE_VERIFY
;
2427 s
->state
=SSL3_ST_CW_CERT_VRFY_B
;
2428 s
->init_num
=(int)n
+4;
2431 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
2436 int ssl3_send_client_certificate(SSL
*s
)
2439 EVP_PKEY
*pkey
=NULL
;
2443 if (s
->state
== SSL3_ST_CW_CERT_A
)
2445 if ((s
->cert
== NULL
) ||
2446 (s
->cert
->key
->x509
== NULL
) ||
2447 (s
->cert
->key
->privatekey
== NULL
))
2448 s
->state
=SSL3_ST_CW_CERT_B
;
2450 s
->state
=SSL3_ST_CW_CERT_C
;
2453 /* We need to get a client cert */
2454 if (s
->state
== SSL3_ST_CW_CERT_B
)
2456 /* If we get an error, we need to
2457 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2458 * We then get retied later */
2460 i
= ssl_do_client_cert_cb(s
, &x509
, &pkey
);
2463 s
->rwstate
=SSL_X509_LOOKUP
;
2466 s
->rwstate
=SSL_NOTHING
;
2467 if ((i
== 1) && (pkey
!= NULL
) && (x509
!= NULL
))
2469 s
->state
=SSL3_ST_CW_CERT_B
;
2470 if ( !SSL_use_certificate(s
,x509
) ||
2471 !SSL_use_PrivateKey(s
,pkey
))
2477 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE
,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK
);
2480 if (x509
!= NULL
) X509_free(x509
);
2481 if (pkey
!= NULL
) EVP_PKEY_free(pkey
);
2484 if (s
->version
== SSL3_VERSION
)
2486 s
->s3
->tmp
.cert_req
=0;
2487 ssl3_send_alert(s
,SSL3_AL_WARNING
,SSL_AD_NO_CERTIFICATE
);
2492 s
->s3
->tmp
.cert_req
=2;
2496 /* Ok, we have a cert */
2497 s
->state
=SSL3_ST_CW_CERT_C
;
2500 if (s
->state
== SSL3_ST_CW_CERT_C
)
2502 s
->state
=SSL3_ST_CW_CERT_D
;
2503 l
=ssl3_output_cert_chain(s
,
2504 (s
->s3
->tmp
.cert_req
== 2)?NULL
:s
->cert
->key
->x509
);
2508 /* SSL3_ST_CW_CERT_D */
2509 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
2512 #define has_bits(i,m) (((i)&(m)) == (m))
2514 int ssl3_check_cert_and_algorithm(SSL
*s
)
2518 EVP_PKEY
*pkey
=NULL
;
2520 #ifndef OPENSSL_NO_RSA
2523 #ifndef OPENSSL_NO_DH
2527 sc
=s
->session
->sess_cert
;
2529 algs
=s
->s3
->tmp
.new_cipher
->algorithms
;
2531 /* we don't have a certificate */
2532 if (algs
& (SSL_aDH
|SSL_aNULL
|SSL_aKRB5
))
2537 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,ERR_R_INTERNAL_ERROR
);
2541 #ifndef OPENSSL_NO_RSA
2542 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
2544 #ifndef OPENSSL_NO_DH
2545 dh
=s
->session
->sess_cert
->peer_dh_tmp
;
2548 /* This is the passed certificate */
2550 idx
=sc
->peer_cert_type
;
2551 #ifndef OPENSSL_NO_ECDH
2552 if (idx
== SSL_PKEY_ECC
)
2554 if (check_srvr_ecc_cert_and_alg(sc
->peer_pkeys
[idx
].x509
,
2555 s
->s3
->tmp
.new_cipher
) == 0)
2556 { /* check failed */
2557 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_BAD_ECC_CERT
);
2566 pkey
=X509_get_pubkey(sc
->peer_pkeys
[idx
].x509
);
2567 i
=X509_certificate_type(sc
->peer_pkeys
[idx
].x509
,pkey
);
2568 EVP_PKEY_free(pkey
);
2571 /* Check that we have a certificate if we require one */
2572 if ((algs
& SSL_aRSA
) && !has_bits(i
,EVP_PK_RSA
|EVP_PKT_SIGN
))
2574 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_SIGNING_CERT
);
2577 #ifndef OPENSSL_NO_DSA
2578 else if ((algs
& SSL_aDSS
) && !has_bits(i
,EVP_PK_DSA
|EVP_PKT_SIGN
))
2580 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DSA_SIGNING_CERT
);
2584 #ifndef OPENSSL_NO_RSA
2585 if ((algs
& SSL_kRSA
) &&
2586 !(has_bits(i
,EVP_PK_RSA
|EVP_PKT_ENC
) || (rsa
!= NULL
)))
2588 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_ENCRYPTING_CERT
);
2592 #ifndef OPENSSL_NO_DH
2593 if ((algs
& SSL_kEDH
) &&
2594 !(has_bits(i
,EVP_PK_DH
|EVP_PKT_EXCH
) || (dh
!= NULL
)))
2596 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_KEY
);
2599 else if ((algs
& SSL_kDHr
) && !has_bits(i
,EVP_PK_DH
|EVP_PKS_RSA
))
2601 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_RSA_CERT
);
2604 #ifndef OPENSSL_NO_DSA
2605 else if ((algs
& SSL_kDHd
) && !has_bits(i
,EVP_PK_DH
|EVP_PKS_DSA
))
2607 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_DSA_CERT
);
2613 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) && !has_bits(i
,EVP_PKT_EXP
))
2615 #ifndef OPENSSL_NO_RSA
2616 if (algs
& SSL_kRSA
)
2619 || RSA_size(rsa
)*8 > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
2621 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_RSA_KEY
);
2627 #ifndef OPENSSL_NO_DH
2628 if (algs
& (SSL_kEDH
|SSL_kDHr
|SSL_kDHd
))
2631 || DH_size(dh
)*8 > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
2633 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_DH_KEY
);
2640 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE
);
2646 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_HANDSHAKE_FAILURE
);
2652 #ifndef OPENSSL_NO_ECDH
2653 /* This is the complement of nid2curve_id in s3_srvr.c. */
2654 static int curve_id2nid(int curve_id
)
2656 /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001)
2657 * (no changes in draft-ietf-tls-ecc-03.txt [June 2003]) */
2658 static int nid_list
[26] =
2661 NID_sect163k1
, /* sect163k1 (1) */
2662 NID_sect163r1
, /* sect163r1 (2) */
2663 NID_sect163r2
, /* sect163r2 (3) */
2664 NID_sect193r1
, /* sect193r1 (4) */
2665 NID_sect193r2
, /* sect193r2 (5) */
2666 NID_sect233k1
, /* sect233k1 (6) */
2667 NID_sect233r1
, /* sect233r1 (7) */
2668 NID_sect239k1
, /* sect239k1 (8) */
2669 NID_sect283k1
, /* sect283k1 (9) */
2670 NID_sect283r1
, /* sect283r1 (10) */
2671 NID_sect409k1
, /* sect409k1 (11) */
2672 NID_sect409r1
, /* sect409r1 (12) */
2673 NID_sect571k1
, /* sect571k1 (13) */
2674 NID_sect571r1
, /* sect571r1 (14) */
2675 NID_secp160k1
, /* secp160k1 (15) */
2676 NID_secp160r1
, /* secp160r1 (16) */
2677 NID_secp160r2
, /* secp160r2 (17) */
2678 NID_secp192k1
, /* secp192k1 (18) */
2679 NID_X9_62_prime192v1
, /* secp192r1 (19) */
2680 NID_secp224k1
, /* secp224k1 (20) */
2681 NID_secp224r1
, /* secp224r1 (21) */
2682 NID_secp256k1
, /* secp256k1 (22) */
2683 NID_X9_62_prime256v1
, /* secp256r1 (23) */
2684 NID_secp384r1
, /* secp384r1 (24) */
2685 NID_secp521r1
/* secp521r1 (25) */
2688 if ((curve_id
< 1) || (curve_id
> 25)) return 0;
2690 return nid_list
[curve_id
];
2694 /* Check to see if handshake is full or resumed. Usually this is just a
2695 * case of checking to see if a cache hit has occurred. In the case of
2696 * session tickets we have to check the next message to be sure.
2699 #ifndef OPENSSL_NO_TLSEXT
2700 static int ssl3_check_finished(SSL
*s
)
2704 /* If we have no ticket or session ID is non-zero length (a match of
2705 * a non-zero session length would never reach here) it cannot be a
2708 if (!s
->session
->tlsext_tick
|| s
->session
->session_id_length
)
2710 /* this function is called when we really expect a Certificate
2711 * message, so permit appropriate message length */
2712 n
=s
->method
->ssl_get_message(s
,
2718 if (!ok
) return((int)n
);
2719 s
->s3
->tmp
.reuse_message
= 1;
2720 if ((s
->s3
->tmp
.message_type
== SSL3_MT_FINISHED
)
2721 || (s
->s3
->tmp
.message_type
== SSL3_MT_NEWSESSION_TICKET
))
2728 int ssl_do_client_cert_cb(SSL
*s
, X509
**px509
, EVP_PKEY
**ppkey
)
2731 #ifndef OPENSSL_NO_ENGINE
2732 if (s
->ctx
->client_cert_engine
)
2734 i
= ENGINE_load_ssl_client_cert(s
->ctx
->client_cert_engine
, s
,
2735 SSL_get_client_CA_list(s
),
2736 px509
, ppkey
, NULL
, NULL
, NULL
);
2741 if (s
->ctx
->client_cert_cb
)
2742 i
= s
->ctx
->client_cert_cb(s
,px509
,ppkey
);