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>
133 #ifndef OPENSSL_NO_DH
134 #include <openssl/dh.h>
136 #include <openssl/bn.h>
138 static SSL_METHOD
*ssl3_get_client_method(int ver
);
139 static int ca_dn_cmp(const X509_NAME
* const *a
,const X509_NAME
* const *b
);
140 #ifndef OPENSSL_NO_TLSEXT
141 static int ssl3_check_finished(SSL
*s
);
144 #ifndef OPENSSL_NO_ECDH
145 static int curve_id2nid(int curve_id
);
146 int check_srvr_ecc_cert_and_alg(X509
*x
, SSL_CIPHER
*cs
);
149 static SSL_METHOD
*ssl3_get_client_method(int ver
)
151 if (ver
== SSL3_VERSION
)
152 return(SSLv3_client_method());
157 IMPLEMENT_ssl3_meth_func(SSLv3_client_method
,
158 ssl_undefined_function
,
160 ssl3_get_client_method
)
162 int ssl3_connect(SSL
*s
)
165 unsigned long Time
=(unsigned long)time(NULL
),l
;
167 void (*cb
)(const SSL
*ssl
,int type
,int val
)=NULL
;
169 int new_state
,state
,skip
=0;;
171 RAND_add(&Time
,sizeof(Time
),0);
175 if (s
->info_callback
!= NULL
)
177 else if (s
->ctx
->info_callback
!= NULL
)
178 cb
=s
->ctx
->info_callback
;
181 if (!SSL_in_init(s
) || SSL_in_before(s
)) SSL_clear(s
);
189 case SSL_ST_RENEGOTIATE
:
191 s
->state
=SSL_ST_CONNECT
;
192 s
->ctx
->stats
.sess_connect_renegotiate
++;
196 case SSL_ST_BEFORE
|SSL_ST_CONNECT
:
197 case SSL_ST_OK
|SSL_ST_CONNECT
:
200 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_START
,1);
202 if ((s
->version
& 0xff00 ) != 0x0300)
204 SSLerr(SSL_F_SSL3_CONNECT
, ERR_R_INTERNAL_ERROR
);
209 /* s->version=SSL3_VERSION; */
210 s
->type
=SSL_ST_CONNECT
;
212 if (s
->init_buf
== NULL
)
214 if ((buf
=BUF_MEM_new()) == NULL
)
219 if (!BUF_MEM_grow(buf
,SSL3_RT_MAX_PLAIN_LENGTH
))
228 if (!ssl3_setup_buffers(s
)) { ret
= -1; goto end
; }
230 /* setup buffing BIO */
231 if (!ssl_init_wbio_buffer(s
,0)) { ret
= -1; goto end
; }
233 /* don't push the buffering BIO quite yet */
235 ssl3_init_finished_mac(s
);
237 s
->state
=SSL3_ST_CW_CLNT_HELLO_A
;
238 s
->ctx
->stats
.sess_connect
++;
242 case SSL3_ST_CW_CLNT_HELLO_A
:
243 case SSL3_ST_CW_CLNT_HELLO_B
:
246 ret
=ssl3_client_hello(s
);
247 if (ret
<= 0) goto end
;
248 s
->state
=SSL3_ST_CR_SRVR_HELLO_A
;
251 /* turn on buffering for the next lot of output */
252 if (s
->bbio
!= s
->wbio
)
253 s
->wbio
=BIO_push(s
->bbio
,s
->wbio
);
257 case SSL3_ST_CR_SRVR_HELLO_A
:
258 case SSL3_ST_CR_SRVR_HELLO_B
:
259 ret
=ssl3_get_server_hello(s
);
260 if (ret
<= 0) goto end
;
262 s
->state
=SSL3_ST_CR_FINISHED_A
;
264 s
->state
=SSL3_ST_CR_CERT_A
;
268 case SSL3_ST_CR_CERT_A
:
269 case SSL3_ST_CR_CERT_B
:
270 #ifndef OPENSSL_NO_TLSEXT
271 ret
=ssl3_check_finished(s
);
272 if (ret
<= 0) goto end
;
276 s
->state
=SSL3_ST_CR_FINISHED_A
;
281 /* Check if it is anon DH/ECDH */
282 if (!(s
->s3
->tmp
.new_cipher
->algorithms
& SSL_aNULL
))
284 ret
=ssl3_get_server_certificate(s
);
285 if (ret
<= 0) goto end
;
289 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
293 case SSL3_ST_CR_KEY_EXCH_A
:
294 case SSL3_ST_CR_KEY_EXCH_B
:
295 ret
=ssl3_get_key_exchange(s
);
296 if (ret
<= 0) goto end
;
297 s
->state
=SSL3_ST_CR_CERT_REQ_A
;
300 /* at this point we check that we have the
301 * required stuff from the server */
302 if (!ssl3_check_cert_and_algorithm(s
))
309 case SSL3_ST_CR_CERT_REQ_A
:
310 case SSL3_ST_CR_CERT_REQ_B
:
311 ret
=ssl3_get_certificate_request(s
);
312 if (ret
<= 0) goto end
;
313 s
->state
=SSL3_ST_CR_SRVR_DONE_A
;
317 case SSL3_ST_CR_SRVR_DONE_A
:
318 case SSL3_ST_CR_SRVR_DONE_B
:
319 ret
=ssl3_get_server_done(s
);
320 if (ret
<= 0) goto end
;
321 if (s
->s3
->tmp
.cert_req
)
322 s
->state
=SSL3_ST_CW_CERT_A
;
324 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
329 case SSL3_ST_CW_CERT_A
:
330 case SSL3_ST_CW_CERT_B
:
331 case SSL3_ST_CW_CERT_C
:
332 case SSL3_ST_CW_CERT_D
:
333 ret
=ssl3_send_client_certificate(s
);
334 if (ret
<= 0) goto end
;
335 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
339 case SSL3_ST_CW_KEY_EXCH_A
:
340 case SSL3_ST_CW_KEY_EXCH_B
:
341 ret
=ssl3_send_client_key_exchange(s
);
342 if (ret
<= 0) goto end
;
343 l
=s
->s3
->tmp
.new_cipher
->algorithms
;
344 /* EAY EAY EAY need to check for DH fix cert
346 /* For TLS, cert_req is set to 2, so a cert chain
347 * of nothing is sent, but no verify packet is sent */
348 /* XXX: For now, we do not support client
349 * authentication in ECDH cipher suites with
350 * ECDH (rather than ECDSA) certificates.
351 * We need to skip the certificate verify
352 * message when client's ECDH public key is sent
353 * inside the client certificate.
355 if (s
->s3
->tmp
.cert_req
== 1)
357 s
->state
=SSL3_ST_CW_CERT_VRFY_A
;
361 s
->state
=SSL3_ST_CW_CHANGE_A
;
362 s
->s3
->change_cipher_spec
=0;
368 case SSL3_ST_CW_CERT_VRFY_A
:
369 case SSL3_ST_CW_CERT_VRFY_B
:
370 ret
=ssl3_send_client_verify(s
);
371 if (ret
<= 0) goto end
;
372 s
->state
=SSL3_ST_CW_CHANGE_A
;
374 s
->s3
->change_cipher_spec
=0;
377 case SSL3_ST_CW_CHANGE_A
:
378 case SSL3_ST_CW_CHANGE_B
:
379 ret
=ssl3_send_change_cipher_spec(s
,
380 SSL3_ST_CW_CHANGE_A
,SSL3_ST_CW_CHANGE_B
);
381 if (ret
<= 0) goto end
;
382 s
->state
=SSL3_ST_CW_FINISHED_A
;
385 s
->session
->cipher
=s
->s3
->tmp
.new_cipher
;
386 #ifdef OPENSSL_NO_COMP
387 s
->session
->compress_meth
=0;
389 if (s
->s3
->tmp
.new_compression
== NULL
)
390 s
->session
->compress_meth
=0;
392 s
->session
->compress_meth
=
393 s
->s3
->tmp
.new_compression
->id
;
395 if (!s
->method
->ssl3_enc
->setup_key_block(s
))
401 if (!s
->method
->ssl3_enc
->change_cipher_state(s
,
402 SSL3_CHANGE_CIPHER_CLIENT_WRITE
))
410 case SSL3_ST_CW_FINISHED_A
:
411 case SSL3_ST_CW_FINISHED_B
:
412 ret
=ssl3_send_finished(s
,
413 SSL3_ST_CW_FINISHED_A
,SSL3_ST_CW_FINISHED_B
,
414 s
->method
->ssl3_enc
->client_finished_label
,
415 s
->method
->ssl3_enc
->client_finished_label_len
);
416 if (ret
<= 0) goto end
;
417 s
->state
=SSL3_ST_CW_FLUSH
;
420 s
->s3
->flags
&= ~SSL3_FLAGS_POP_BUFFER
;
423 s
->s3
->tmp
.next_state
=SSL_ST_OK
;
424 if (s
->s3
->flags
& SSL3_FLAGS_DELAY_CLIENT_FINISHED
)
427 s
->s3
->flags
|=SSL3_FLAGS_POP_BUFFER
;
428 s
->s3
->delay_buf_pop_ret
=0;
433 #ifndef OPENSSL_NO_TLSEXT
434 /* Allow NewSessionTicket if ticket expected */
435 if (s
->tlsext_ticket_expected
)
436 s
->s3
->tmp
.next_state
=SSL3_ST_CR_SESSION_TICKET_A
;
440 s
->s3
->tmp
.next_state
=SSL3_ST_CR_FINISHED_A
;
445 #ifndef OPENSSL_NO_TLSEXT
446 case SSL3_ST_CR_SESSION_TICKET_A
:
447 case SSL3_ST_CR_SESSION_TICKET_B
:
448 ret
=ssl3_get_new_session_ticket(s
);
449 if (ret
<= 0) goto end
;
450 s
->state
=SSL3_ST_CR_FINISHED_A
;
455 case SSL3_ST_CR_FINISHED_A
:
456 case SSL3_ST_CR_FINISHED_B
:
458 ret
=ssl3_get_finished(s
,SSL3_ST_CR_FINISHED_A
,
459 SSL3_ST_CR_FINISHED_B
);
460 if (ret
<= 0) goto end
;
463 s
->state
=SSL3_ST_CW_CHANGE_A
;
469 case SSL3_ST_CW_FLUSH
:
470 /* number of bytes to be flushed */
471 num1
=BIO_ctrl(s
->wbio
,BIO_CTRL_INFO
,0,NULL
);
474 s
->rwstate
=SSL_WRITING
;
475 num1
=BIO_flush(s
->wbio
);
476 if (num1
<= 0) { ret
= -1; goto end
; }
477 s
->rwstate
=SSL_NOTHING
;
480 s
->state
=s
->s3
->tmp
.next_state
;
484 /* clean a few things up */
485 ssl3_cleanup_key_block(s
);
487 if (s
->init_buf
!= NULL
)
489 BUF_MEM_free(s
->init_buf
);
493 /* If we are not 'joining' the last two packets,
494 * remove the buffering now */
495 if (!(s
->s3
->flags
& SSL3_FLAGS_POP_BUFFER
))
496 ssl_free_wbio_buffer(s
);
497 /* else do it later in ssl3_write */
502 ssl_update_cache(s
,SSL_SESS_CACHE_CLIENT
);
503 if (s
->hit
) s
->ctx
->stats
.sess_hit
++;
507 s
->handshake_func
=ssl3_connect
;
508 s
->ctx
->stats
.sess_connect_good
++;
510 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_DONE
,1);
516 SSLerr(SSL_F_SSL3_CONNECT
,SSL_R_UNKNOWN_STATE
);
522 /* did we do anything */
523 if (!s
->s3
->tmp
.reuse_message
&& !skip
)
527 if ((ret
=BIO_flush(s
->wbio
)) <= 0)
531 if ((cb
!= NULL
) && (s
->state
!= state
))
535 cb(s
,SSL_CB_CONNECT_LOOP
,1);
546 cb(s
,SSL_CB_CONNECT_EXIT
,ret
);
551 int ssl3_client_hello(SSL
*s
)
556 unsigned long Time
,l
;
557 #ifndef OPENSSL_NO_COMP
562 buf
=(unsigned char *)s
->init_buf
->data
;
563 if (s
->state
== SSL3_ST_CW_CLNT_HELLO_A
)
565 if ((s
->session
== NULL
) ||
566 (s
->session
->ssl_version
!= s
->version
) ||
567 (s
->session
->not_resumable
))
569 if (!ssl_get_new_session(s
,0))
572 /* else use the pre-loaded session */
574 p
=s
->s3
->client_random
;
575 Time
=(unsigned long)time(NULL
); /* Time */
577 if (RAND_pseudo_bytes(p
,SSL3_RANDOM_SIZE
-4) <= 0)
580 /* Do the message type and length last */
583 *(p
++)=s
->version
>>8;
584 *(p
++)=s
->version
&0xff;
585 s
->client_version
=s
->version
;
588 memcpy(p
,s
->s3
->client_random
,SSL3_RANDOM_SIZE
);
595 i
=s
->session
->session_id_length
;
599 if (i
> (int)sizeof(s
->session
->session_id
))
601 SSLerr(SSL_F_SSL3_CLIENT_HELLO
, ERR_R_INTERNAL_ERROR
);
604 memcpy(p
,s
->session
->session_id
,i
);
608 /* Ciphers supported */
609 i
=ssl_cipher_list_to_bytes(s
,SSL_get_ciphers(s
),&(p
[2]),0);
612 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,SSL_R_NO_CIPHERS_AVAILABLE
);
619 #ifdef OPENSSL_NO_COMP
622 if (s
->ctx
->comp_methods
== NULL
)
625 j
=sk_SSL_COMP_num(s
->ctx
->comp_methods
);
629 comp
=sk_SSL_COMP_value(s
->ctx
->comp_methods
,i
);
633 *(p
++)=0; /* Add the NULL method */
634 #ifndef OPENSSL_NO_TLSEXT
635 if ((p
= ssl_add_clienthello_tlsext(s
, p
, buf
+SSL3_RT_MAX_PLAIN_LENGTH
)) == NULL
)
637 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,ERR_R_INTERNAL_ERROR
);
643 *(d
++)=SSL3_MT_CLIENT_HELLO
;
646 s
->state
=SSL3_ST_CW_CLNT_HELLO_B
;
647 /* number of bytes to write */
652 /* SSL3_ST_CW_CLNT_HELLO_B */
653 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
658 int ssl3_get_server_hello(SSL
*s
)
660 STACK_OF(SSL_CIPHER
) *sk
;
666 #ifndef OPENSSL_NO_COMP
670 n
=s
->method
->ssl_get_message(s
,
671 SSL3_ST_CR_SRVR_HELLO_A
,
672 SSL3_ST_CR_SRVR_HELLO_B
,
677 if (!ok
) return((int)n
);
679 if ( SSL_version(s
) == DTLS1_VERSION
)
681 if ( s
->s3
->tmp
.message_type
== DTLS1_MT_HELLO_VERIFY_REQUEST
)
683 if ( s
->d1
->send_cookie
== 0)
685 s
->s3
->tmp
.reuse_message
= 1;
688 else /* already sent a cookie */
690 al
=SSL_AD_UNEXPECTED_MESSAGE
;
691 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_MESSAGE_TYPE
);
697 if ( s
->s3
->tmp
.message_type
!= SSL3_MT_SERVER_HELLO
)
699 al
=SSL_AD_UNEXPECTED_MESSAGE
;
700 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_MESSAGE_TYPE
);
704 d
=p
=(unsigned char *)s
->init_msg
;
706 if ((p
[0] != (s
->version
>>8)) || (p
[1] != (s
->version
&0xff)))
708 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_SSL_VERSION
);
709 s
->version
=(s
->version
&0xff00)|p
[1];
710 al
=SSL_AD_PROTOCOL_VERSION
;
715 /* load the server hello data */
716 /* load the server random */
717 memcpy(s
->s3
->server_random
,p
,SSL3_RANDOM_SIZE
);
720 /* get the session-id */
723 if ((j
> sizeof s
->session
->session_id
) || (j
> SSL3_SESSION_ID_SIZE
))
725 al
=SSL_AD_ILLEGAL_PARAMETER
;
726 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_SSL3_SESSION_ID_TOO_LONG
);
730 if (j
!= 0 && j
== s
->session
->session_id_length
731 && memcmp(p
,s
->session
->session_id
,j
) == 0)
733 if(s
->sid_ctx_length
!= s
->session
->sid_ctx_length
734 || memcmp(s
->session
->sid_ctx
,s
->sid_ctx
,s
->sid_ctx_length
))
736 /* actually a client application bug */
737 al
=SSL_AD_ILLEGAL_PARAMETER
;
738 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT
);
743 else /* a miss or crap from the other end */
745 /* If we were trying for session-id reuse, make a new
746 * SSL_SESSION so we don't stuff up other people */
748 if (s
->session
->session_id_length
> 0)
750 if (!ssl_get_new_session(s
,0))
752 al
=SSL_AD_INTERNAL_ERROR
;
756 s
->session
->session_id_length
=j
;
757 memcpy(s
->session
->session_id
,p
,j
); /* j could be 0 */
760 c
=ssl_get_cipher_by_char(s
,p
);
764 al
=SSL_AD_ILLEGAL_PARAMETER
;
765 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNKNOWN_CIPHER_RETURNED
);
768 p
+=ssl_put_cipher_by_char(s
,NULL
,NULL
);
770 sk
=ssl_get_ciphers_by_id(s
);
771 i
=sk_SSL_CIPHER_find(sk
,c
);
774 /* we did not say we would use this cipher */
775 al
=SSL_AD_ILLEGAL_PARAMETER
;
776 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_CIPHER_RETURNED
);
780 /* Depending on the session caching (internal/external), the cipher
781 and/or cipher_id values may not be set. Make sure that
782 cipher_id is set and use it for comparison. */
783 if (s
->session
->cipher
)
784 s
->session
->cipher_id
= s
->session
->cipher
->id
;
785 if (s
->hit
&& (s
->session
->cipher_id
!= c
->id
))
788 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
))
790 al
=SSL_AD_ILLEGAL_PARAMETER
;
791 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED
);
795 s
->s3
->tmp
.new_cipher
=c
;
797 /* lets get the compression algorithm */
799 #ifdef OPENSSL_NO_COMP
802 al
=SSL_AD_ILLEGAL_PARAMETER
;
803 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
811 comp
=ssl3_comp_find(s
->ctx
->comp_methods
,j
);
813 if ((j
!= 0) && (comp
== NULL
))
815 al
=SSL_AD_ILLEGAL_PARAMETER
;
816 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
821 s
->s3
->tmp
.new_compression
=comp
;
824 #ifndef OPENSSL_NO_TLSEXT
826 if (s
->version
> SSL3_VERSION
)
828 if (!ssl_parse_serverhello_tlsext(s
,&p
,d
,n
, &al
))
830 /* 'al' set by ssl_parse_serverhello_tlsext */
831 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_PARSE_TLSEXT
);
834 if (ssl_check_serverhello_tlsext(s
) <= 0)
836 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_SERVERHELLO_TLSEXT
);
845 /* wrong packet length */
846 al
=SSL_AD_DECODE_ERROR
;
847 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_PACKET_LENGTH
);
853 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
858 int ssl3_get_server_certificate(SSL
*s
)
861 unsigned long n
,nc
,llen
,l
;
863 const unsigned char *q
,*p
;
865 STACK_OF(X509
) *sk
=NULL
;
868 int need_cert
= 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
870 n
=s
->method
->ssl_get_message(s
,
877 if (!ok
) return((int)n
);
879 if ((s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_KEY_EXCHANGE
) ||
880 ((s
->s3
->tmp
.new_cipher
->algorithms
& SSL_aKRB5
) &&
881 (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_DONE
)))
883 s
->s3
->tmp
.reuse_message
=1;
887 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE
)
889 al
=SSL_AD_UNEXPECTED_MESSAGE
;
890 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_BAD_MESSAGE_TYPE
);
893 p
=d
=(unsigned char *)s
->init_msg
;
895 if ((sk
=sk_X509_new_null()) == NULL
)
897 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
904 al
=SSL_AD_DECODE_ERROR
;
905 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_LENGTH_MISMATCH
);
908 for (nc
=0; nc
<llen
; )
913 al
=SSL_AD_DECODE_ERROR
;
914 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
919 x
=d2i_X509(NULL
,&q
,l
);
922 al
=SSL_AD_BAD_CERTIFICATE
;
923 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_ASN1_LIB
);
928 al
=SSL_AD_DECODE_ERROR
;
929 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
932 if (!sk_X509_push(sk
,x
))
934 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
942 i
=ssl_verify_cert_chain(s
,sk
);
943 if ((s
->verify_mode
!= SSL_VERIFY_NONE
) && (!i
)
944 #ifndef OPENSSL_NO_KRB5
945 && (s
->s3
->tmp
.new_cipher
->algorithms
& (SSL_MKEY_MASK
|SSL_AUTH_MASK
))
946 != (SSL_aKRB5
|SSL_kKRB5
)
947 #endif /* OPENSSL_NO_KRB5 */
950 al
=ssl_verify_alarm_type(s
->verify_result
);
951 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERTIFICATE_VERIFY_FAILED
);
954 ERR_clear_error(); /* but we keep s->verify_result */
956 sc
=ssl_sess_cert_new();
957 if (sc
== NULL
) goto err
;
959 if (s
->session
->sess_cert
) ssl_sess_cert_free(s
->session
->sess_cert
);
960 s
->session
->sess_cert
=sc
;
963 /* Inconsistency alert: cert_chain does include the peer's
964 * certificate, which we don't include in s3_srvr.c */
965 x
=sk_X509_value(sk
,0);
967 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
969 pkey
=X509_get_pubkey(x
);
971 /* VRS: allow null cert if auth == KRB5 */
972 need_cert
= ((s
->s3
->tmp
.new_cipher
->algorithms
973 & (SSL_MKEY_MASK
|SSL_AUTH_MASK
))
974 == (SSL_aKRB5
|SSL_kKRB5
))? 0: 1;
977 printf("pkey,x = %p, %p\n", pkey
,x
);
978 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x
,pkey
));
979 printf("cipher, alg, nc = %s, %lx, %d\n", s
->s3
->tmp
.new_cipher
->name
,
980 s
->s3
->tmp
.new_cipher
->algorithms
, need_cert
);
981 #endif /* KSSL_DEBUG */
983 if (need_cert
&& ((pkey
== NULL
) || EVP_PKEY_missing_parameters(pkey
)))
987 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
988 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS
);
992 i
=ssl_cert_type(x
,pkey
);
993 if (need_cert
&& i
< 0)
997 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,
998 SSL_R_UNKNOWN_CERTIFICATE_TYPE
);
1004 sc
->peer_cert_type
=i
;
1005 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
1006 /* Why would the following ever happen?
1007 * We just created sc a couple of lines ago. */
1008 if (sc
->peer_pkeys
[i
].x509
!= NULL
)
1009 X509_free(sc
->peer_pkeys
[i
].x509
);
1010 sc
->peer_pkeys
[i
].x509
=x
;
1011 sc
->peer_key
= &(sc
->peer_pkeys
[i
]);
1013 if (s
->session
->peer
!= NULL
)
1014 X509_free(s
->session
->peer
);
1015 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
1020 sc
->peer_cert_type
=i
;
1023 if (s
->session
->peer
!= NULL
)
1024 X509_free(s
->session
->peer
);
1025 s
->session
->peer
=NULL
;
1027 s
->session
->verify_result
= s
->verify_result
;
1035 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1038 EVP_PKEY_free(pkey
);
1040 sk_X509_pop_free(sk
,X509_free
);
1044 int ssl3_get_key_exchange(SSL
*s
)
1046 #ifndef OPENSSL_NO_RSA
1047 unsigned char *q
,md_buf
[EVP_MAX_MD_SIZE
*2];
1050 unsigned char *param
,*p
;
1051 int al
,i
,j
,param_len
,ok
;
1053 EVP_PKEY
*pkey
=NULL
;
1054 #ifndef OPENSSL_NO_RSA
1057 #ifndef OPENSSL_NO_DH
1060 #ifndef OPENSSL_NO_ECDH
1061 EC_KEY
*ecdh
= NULL
;
1062 BN_CTX
*bn_ctx
= NULL
;
1063 EC_POINT
*srvr_ecpoint
= NULL
;
1065 int encoded_pt_len
= 0;
1068 /* use same message size as in ssl3_get_certificate_request()
1069 * as ServerKeyExchange message may be skipped */
1070 n
=s
->method
->ssl_get_message(s
,
1071 SSL3_ST_CR_KEY_EXCH_A
,
1072 SSL3_ST_CR_KEY_EXCH_B
,
1077 if (!ok
) return((int)n
);
1079 if (s
->s3
->tmp
.message_type
!= SSL3_MT_SERVER_KEY_EXCHANGE
)
1081 s
->s3
->tmp
.reuse_message
=1;
1085 param
=p
=(unsigned char *)s
->init_msg
;
1087 if (s
->session
->sess_cert
!= NULL
)
1089 #ifndef OPENSSL_NO_RSA
1090 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
1092 RSA_free(s
->session
->sess_cert
->peer_rsa_tmp
);
1093 s
->session
->sess_cert
->peer_rsa_tmp
=NULL
;
1096 #ifndef OPENSSL_NO_DH
1097 if (s
->session
->sess_cert
->peer_dh_tmp
)
1099 DH_free(s
->session
->sess_cert
->peer_dh_tmp
);
1100 s
->session
->sess_cert
->peer_dh_tmp
=NULL
;
1103 #ifndef OPENSSL_NO_ECDH
1104 if (s
->session
->sess_cert
->peer_ecdh_tmp
)
1106 EC_KEY_free(s
->session
->sess_cert
->peer_ecdh_tmp
);
1107 s
->session
->sess_cert
->peer_ecdh_tmp
=NULL
;
1113 s
->session
->sess_cert
=ssl_sess_cert_new();
1117 alg
=s
->s3
->tmp
.new_cipher
->algorithms
;
1118 EVP_MD_CTX_init(&md_ctx
);
1120 #ifndef OPENSSL_NO_RSA
1123 if ((rsa
=RSA_new()) == NULL
)
1125 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1132 al
=SSL_AD_DECODE_ERROR
;
1133 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_MODULUS_LENGTH
);
1136 if (!(rsa
->n
=BN_bin2bn(p
,i
,rsa
->n
)))
1138 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1147 al
=SSL_AD_DECODE_ERROR
;
1148 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_E_LENGTH
);
1151 if (!(rsa
->e
=BN_bin2bn(p
,i
,rsa
->e
)))
1153 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1159 /* this should be because we are using an export cipher */
1161 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1164 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1167 s
->session
->sess_cert
->peer_rsa_tmp
=rsa
;
1170 #else /* OPENSSL_NO_RSA */
1174 #ifndef OPENSSL_NO_DH
1175 else if (alg
& SSL_kEDH
)
1177 if ((dh
=DH_new()) == NULL
)
1179 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1186 al
=SSL_AD_DECODE_ERROR
;
1187 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_P_LENGTH
);
1190 if (!(dh
->p
=BN_bin2bn(p
,i
,NULL
)))
1192 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1201 al
=SSL_AD_DECODE_ERROR
;
1202 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_G_LENGTH
);
1205 if (!(dh
->g
=BN_bin2bn(p
,i
,NULL
)))
1207 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1216 al
=SSL_AD_DECODE_ERROR
;
1217 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_PUB_KEY_LENGTH
);
1220 if (!(dh
->pub_key
=BN_bin2bn(p
,i
,NULL
)))
1222 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1228 #ifndef OPENSSL_NO_RSA
1230 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1235 #ifndef OPENSSL_NO_DSA
1236 else if (alg
& SSL_aDSS
)
1237 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_DSA_SIGN
].x509
);
1239 /* else anonymous DH, so no certificate or pkey. */
1241 s
->session
->sess_cert
->peer_dh_tmp
=dh
;
1244 else if ((alg
& SSL_kDHr
) || (alg
& SSL_kDHd
))
1246 al
=SSL_AD_ILLEGAL_PARAMETER
;
1247 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER
);
1250 #endif /* !OPENSSL_NO_DH */
1252 #ifndef OPENSSL_NO_ECDH
1253 else if (alg
& SSL_kECDHE
)
1256 const EC_GROUP
*group
;
1258 if ((ecdh
=EC_KEY_new()) == NULL
)
1260 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1264 /* Extract elliptic curve parameters and the
1265 * server's ephemeral ECDH public key.
1266 * Keep accumulating lengths of various components in
1267 * param_len and make sure it never exceeds n.
1270 /* XXX: For now we only support named (not generic) curves
1271 * and the ECParameters in this case is just three bytes.
1274 if ((param_len
> n
) ||
1275 (*p
!= NAMED_CURVE_TYPE
) ||
1276 ((curve_nid
= curve_id2nid(*(p
+ 2))) == 0))
1278 al
=SSL_AD_INTERNAL_ERROR
;
1279 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS
);
1283 ngroup
= EC_GROUP_new_by_curve_name(curve_nid
);
1286 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_EC_LIB
);
1289 if (EC_KEY_set_group(ecdh
, ngroup
) == 0)
1291 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_EC_LIB
);
1294 EC_GROUP_free(ngroup
);
1296 group
= EC_KEY_get0_group(ecdh
);
1298 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) &&
1299 (EC_GROUP_get_degree(group
) > 163))
1301 al
=SSL_AD_EXPORT_RESTRICTION
;
1302 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER
);
1308 /* Next, get the encoded ECPoint */
1309 if (((srvr_ecpoint
= EC_POINT_new(group
)) == NULL
) ||
1310 ((bn_ctx
= BN_CTX_new()) == NULL
))
1312 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
1316 encoded_pt_len
= *p
; /* length of encoded point */
1318 param_len
+= (1 + encoded_pt_len
);
1319 if ((param_len
> n
) ||
1320 (EC_POINT_oct2point(group
, srvr_ecpoint
,
1321 p
, encoded_pt_len
, bn_ctx
) == 0))
1323 al
=SSL_AD_DECODE_ERROR
;
1324 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_ECPOINT
);
1331 /* The ECC/TLS specification does not mention
1332 * the use of DSA to sign ECParameters in the server
1333 * key exchange message. We do support RSA and ECDSA.
1336 #ifndef OPENSSL_NO_RSA
1337 else if (alg
& SSL_aRSA
)
1338 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1340 #ifndef OPENSSL_NO_ECDSA
1341 else if (alg
& SSL_aECDSA
)
1342 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_ECC
].x509
);
1344 /* else anonymous ECDH, so no certificate or pkey. */
1345 EC_KEY_set_public_key(ecdh
, srvr_ecpoint
);
1346 s
->session
->sess_cert
->peer_ecdh_tmp
=ecdh
;
1348 BN_CTX_free(bn_ctx
);
1349 EC_POINT_free(srvr_ecpoint
);
1350 srvr_ecpoint
= NULL
;
1352 else if (alg
& SSL_kECDH
)
1354 al
=SSL_AD_UNEXPECTED_MESSAGE
;
1355 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_UNEXPECTED_MESSAGE
);
1358 #endif /* !OPENSSL_NO_ECDH */
1361 al
=SSL_AD_HANDSHAKE_FAILURE
;
1362 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER
);
1367 /* p points to the next byte, there are 'n' bytes left */
1369 /* if it was signed, check the signature */
1374 j
=EVP_PKEY_size(pkey
);
1376 if ((i
!= n
) || (n
> j
) || (n
<= 0))
1378 /* wrong packet length */
1379 al
=SSL_AD_DECODE_ERROR
;
1380 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_WRONG_SIGNATURE_LENGTH
);
1384 #ifndef OPENSSL_NO_RSA
1385 if (pkey
->type
== EVP_PKEY_RSA
)
1391 for (num
=2; num
> 0; num
--)
1393 EVP_DigestInit_ex(&md_ctx
,(num
== 2)
1394 ?s
->ctx
->md5
:s
->ctx
->sha1
, NULL
);
1395 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1396 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1397 EVP_DigestUpdate(&md_ctx
,param
,param_len
);
1398 EVP_DigestFinal_ex(&md_ctx
,q
,(unsigned int *)&i
);
1402 i
=RSA_verify(NID_md5_sha1
, md_buf
, j
, p
, n
,
1406 al
=SSL_AD_DECRYPT_ERROR
;
1407 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_DECRYPT
);
1413 al
=SSL_AD_DECRYPT_ERROR
;
1414 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1420 #ifndef OPENSSL_NO_DSA
1421 if (pkey
->type
== EVP_PKEY_DSA
)
1424 EVP_VerifyInit_ex(&md_ctx
,EVP_dss1(), NULL
);
1425 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1426 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1427 EVP_VerifyUpdate(&md_ctx
,param
,param_len
);
1428 if (!EVP_VerifyFinal(&md_ctx
,p
,(int)n
,pkey
))
1431 al
=SSL_AD_DECRYPT_ERROR
;
1432 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1438 #ifndef OPENSSL_NO_ECDSA
1439 if (pkey
->type
== EVP_PKEY_EC
)
1441 /* let's do ECDSA */
1442 EVP_VerifyInit_ex(&md_ctx
,EVP_ecdsa(), NULL
);
1443 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1444 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1445 EVP_VerifyUpdate(&md_ctx
,param
,param_len
);
1446 if (!EVP_VerifyFinal(&md_ctx
,p
,(int)n
,pkey
))
1449 al
=SSL_AD_DECRYPT_ERROR
;
1450 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1457 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1463 /* still data left over */
1464 if (!(alg
& SSL_aNULL
))
1466 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1471 al
=SSL_AD_DECODE_ERROR
;
1472 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_EXTRA_DATA_IN_MESSAGE
);
1476 EVP_PKEY_free(pkey
);
1477 EVP_MD_CTX_cleanup(&md_ctx
);
1480 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1482 EVP_PKEY_free(pkey
);
1483 #ifndef OPENSSL_NO_RSA
1487 #ifndef OPENSSL_NO_DH
1491 #ifndef OPENSSL_NO_ECDH
1492 BN_CTX_free(bn_ctx
);
1493 EC_POINT_free(srvr_ecpoint
);
1497 EVP_MD_CTX_cleanup(&md_ctx
);
1501 int ssl3_get_certificate_request(SSL
*s
)
1504 unsigned long n
,nc
,l
;
1505 unsigned int llen
,ctype_num
,i
;
1507 const unsigned char *p
,*q
;
1509 STACK_OF(X509_NAME
) *ca_sk
=NULL
;
1511 n
=s
->method
->ssl_get_message(s
,
1512 SSL3_ST_CR_CERT_REQ_A
,
1513 SSL3_ST_CR_CERT_REQ_B
,
1518 if (!ok
) return((int)n
);
1520 s
->s3
->tmp
.cert_req
=0;
1522 if (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_DONE
)
1524 s
->s3
->tmp
.reuse_message
=1;
1528 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE_REQUEST
)
1530 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
1531 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_WRONG_MESSAGE_TYPE
);
1535 /* TLS does not like anon-DH with client cert */
1536 if (s
->version
> SSL3_VERSION
)
1538 l
=s
->s3
->tmp
.new_cipher
->algorithms
;
1541 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
1542 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER
);
1547 p
=d
=(unsigned char *)s
->init_msg
;
1549 if ((ca_sk
=sk_X509_NAME_new(ca_dn_cmp
)) == NULL
)
1551 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
1555 /* get the certificate types */
1557 if (ctype_num
> SSL3_CT_NUMBER
)
1558 ctype_num
=SSL3_CT_NUMBER
;
1559 for (i
=0; i
<ctype_num
; i
++)
1560 s
->s3
->tmp
.ctype
[i
]= p
[i
];
1563 /* get the CA RDNs */
1568 out
=fopen("/tmp/vsign.der","w");
1569 fwrite(p
,1,llen
,out
);
1574 if ((llen
+ctype_num
+2+1) != n
)
1576 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1577 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_LENGTH_MISMATCH
);
1581 for (nc
=0; nc
<llen
; )
1584 if ((l
+nc
+2) > llen
)
1586 if ((s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
))
1587 goto cont
; /* netscape bugs */
1588 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1589 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_TOO_LONG
);
1595 if ((xn
=d2i_X509_NAME(NULL
,&q
,l
)) == NULL
)
1597 /* If netscape tolerance is on, ignore errors */
1598 if (s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
)
1602 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1603 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_ASN1_LIB
);
1610 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1611 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_LENGTH_MISMATCH
);
1614 if (!sk_X509_NAME_push(ca_sk
,xn
))
1616 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
1630 /* we should setup a certificate to return.... */
1631 s
->s3
->tmp
.cert_req
=1;
1632 s
->s3
->tmp
.ctype_num
=ctype_num
;
1633 if (s
->s3
->tmp
.ca_names
!= NULL
)
1634 sk_X509_NAME_pop_free(s
->s3
->tmp
.ca_names
,X509_NAME_free
);
1635 s
->s3
->tmp
.ca_names
=ca_sk
;
1640 if (ca_sk
!= NULL
) sk_X509_NAME_pop_free(ca_sk
,X509_NAME_free
);
1644 static int ca_dn_cmp(const X509_NAME
* const *a
, const X509_NAME
* const *b
)
1646 return(X509_NAME_cmp(*a
,*b
));
1648 #ifndef OPENSSL_NO_TLSEXT
1649 int ssl3_get_new_session_ticket(SSL
*s
)
1651 int ok
,al
,ret
=0, ticklen
;
1653 const unsigned char *p
;
1656 n
=s
->method
->ssl_get_message(s
,
1657 SSL3_ST_CR_SESSION_TICKET_A
,
1658 SSL3_ST_CR_SESSION_TICKET_B
,
1666 if (s
->s3
->tmp
.message_type
== SSL3_MT_FINISHED
)
1668 s
->s3
->tmp
.reuse_message
=1;
1671 if (s
->s3
->tmp
.message_type
!= SSL3_MT_NEWSESSION_TICKET
)
1673 al
=SSL_AD_UNEXPECTED_MESSAGE
;
1674 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_BAD_MESSAGE_TYPE
);
1679 /* need at least ticket_lifetime_hint + ticket length */
1680 al
= SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
;
1681 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET
,SSL_R_LENGTH_MISMATCH
);
1684 p
=d
=(unsigned char *)s
->init_msg
;
1685 n2l(p
, s
->session
->tlsext_tick_lifetime_hint
);
1687 /* ticket_lifetime_hint + ticket_length + ticket */
1688 if (ticklen
+ 6 != n
)
1690 al
= SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
;
1691 SSLerr(SSL_F_SSL3_NEW_SESSION_TICKET
,SSL_R_LENGTH_MISMATCH
);
1694 if (s
->session
->tlsext_tick
)
1696 OPENSSL_free(s
->session
->tlsext_tick
);
1697 s
->session
->tlsext_ticklen
= 0;
1699 s
->session
->tlsext_tick
= OPENSSL_malloc(ticklen
);
1700 if (!s
->session
->tlsext_tick
)
1702 SSLerr(SSL_F_SSL3_NEW_SESSION_TICKET
,ERR_R_MALLOC_FAILURE
);
1705 memcpy(s
->session
->tlsext_tick
, p
, ticklen
);
1706 s
->session
->tlsext_ticklen
= ticklen
;
1711 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1717 int ssl3_get_server_done(SSL
*s
)
1722 n
=s
->method
->ssl_get_message(s
,
1723 SSL3_ST_CR_SRVR_DONE_A
,
1724 SSL3_ST_CR_SRVR_DONE_B
,
1725 SSL3_MT_SERVER_DONE
,
1726 30, /* should be very small, like 0 :-) */
1729 if (!ok
) return((int)n
);
1732 /* should contain no data */
1733 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1734 SSLerr(SSL_F_SSL3_GET_SERVER_DONE
,SSL_R_LENGTH_MISMATCH
);
1742 int ssl3_send_client_key_exchange(SSL
*s
)
1744 unsigned char *p
,*d
;
1747 #ifndef OPENSSL_NO_RSA
1749 EVP_PKEY
*pkey
=NULL
;
1751 #ifndef OPENSSL_NO_KRB5
1753 #endif /* OPENSSL_NO_KRB5 */
1754 #ifndef OPENSSL_NO_ECDH
1755 EC_KEY
*clnt_ecdh
= NULL
;
1756 const EC_POINT
*srvr_ecpoint
= NULL
;
1757 EVP_PKEY
*srvr_pub_pkey
= NULL
;
1758 unsigned char *encodedPoint
= NULL
;
1759 int encoded_pt_len
= 0;
1760 BN_CTX
* bn_ctx
= NULL
;
1763 if (s
->state
== SSL3_ST_CW_KEY_EXCH_A
)
1765 d
=(unsigned char *)s
->init_buf
->data
;
1768 l
=s
->s3
->tmp
.new_cipher
->algorithms
;
1770 /* Fool emacs indentation */
1772 #ifndef OPENSSL_NO_RSA
1773 else if (l
& SSL_kRSA
)
1776 unsigned char tmp_buf
[SSL_MAX_MASTER_KEY_LENGTH
];
1778 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
1779 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
1782 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1783 if ((pkey
== NULL
) ||
1784 (pkey
->type
!= EVP_PKEY_RSA
) ||
1785 (pkey
->pkey
.rsa
== NULL
))
1787 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_INTERNAL_ERROR
);
1791 EVP_PKEY_free(pkey
);
1794 tmp_buf
[0]=s
->client_version
>>8;
1795 tmp_buf
[1]=s
->client_version
&0xff;
1796 if (RAND_bytes(&(tmp_buf
[2]),sizeof tmp_buf
-2) <= 0)
1799 s
->session
->master_key_length
=sizeof tmp_buf
;
1802 /* Fix buf for TLS and beyond */
1803 if (s
->version
> SSL3_VERSION
)
1805 n
=RSA_public_encrypt(sizeof tmp_buf
,
1806 tmp_buf
,p
,rsa
,RSA_PKCS1_PADDING
);
1808 if (s
->options
& SSL_OP_PKCS1_CHECK_1
) p
[1]++;
1809 if (s
->options
& SSL_OP_PKCS1_CHECK_2
) tmp_buf
[0]=0x70;
1813 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_BAD_RSA_ENCRYPT
);
1817 /* Fix buf for TLS and beyond */
1818 if (s
->version
> SSL3_VERSION
)
1824 s
->session
->master_key_length
=
1825 s
->method
->ssl3_enc
->generate_master_secret(s
,
1826 s
->session
->master_key
,
1827 tmp_buf
,sizeof tmp_buf
);
1828 OPENSSL_cleanse(tmp_buf
,sizeof tmp_buf
);
1831 #ifndef OPENSSL_NO_KRB5
1832 else if (l
& SSL_kKRB5
)
1834 krb5_error_code krb5rc
;
1835 KSSL_CTX
*kssl_ctx
= s
->kssl_ctx
;
1836 /* krb5_data krb5_ap_req; */
1837 krb5_data
*enc_ticket
;
1838 krb5_data authenticator
, *authp
= NULL
;
1839 EVP_CIPHER_CTX ciph_ctx
;
1840 EVP_CIPHER
*enc
= NULL
;
1841 unsigned char iv
[EVP_MAX_IV_LENGTH
];
1842 unsigned char tmp_buf
[SSL_MAX_MASTER_KEY_LENGTH
];
1843 unsigned char epms
[SSL_MAX_MASTER_KEY_LENGTH
1844 + EVP_MAX_IV_LENGTH
];
1845 int padl
, outl
= sizeof(epms
);
1847 EVP_CIPHER_CTX_init(&ciph_ctx
);
1850 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1852 #endif /* KSSL_DEBUG */
1856 if (KRB5SENDAUTH
) authp
= &authenticator
;
1857 #endif /* KRB5SENDAUTH */
1859 krb5rc
= kssl_cget_tkt(kssl_ctx
, &enc_ticket
, authp
,
1861 enc
= kssl_map_enc(kssl_ctx
->enctype
);
1866 printf("kssl_cget_tkt rtn %d\n", krb5rc
);
1867 if (krb5rc
&& kssl_err
.text
)
1868 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err
.text
);
1870 #endif /* KSSL_DEBUG */
1874 ssl3_send_alert(s
,SSL3_AL_FATAL
,
1875 SSL_AD_HANDSHAKE_FAILURE
);
1876 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
1881 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
1882 ** in place of RFC 2712 KerberosWrapper, as in:
1884 ** Send ticket (copy to *p, set n = length)
1885 ** n = krb5_ap_req.length;
1886 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1887 ** if (krb5_ap_req.data)
1888 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1890 ** Now using real RFC 2712 KerberosWrapper
1891 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
1892 ** Note: 2712 "opaque" types are here replaced
1893 ** with a 2-byte length followed by the value.
1895 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
1896 ** Where "xx xx" = length bytes. Shown here with
1897 ** optional authenticator omitted.
1900 /* KerberosWrapper.Ticket */
1901 s2n(enc_ticket
->length
,p
);
1902 memcpy(p
, enc_ticket
->data
, enc_ticket
->length
);
1903 p
+= enc_ticket
->length
;
1904 n
= enc_ticket
->length
+ 2;
1906 /* KerberosWrapper.Authenticator */
1907 if (authp
&& authp
->length
)
1909 s2n(authp
->length
,p
);
1910 memcpy(p
, authp
->data
, authp
->length
);
1912 n
+= authp
->length
+ 2;
1920 s2n(0,p
);/* null authenticator length */
1924 tmp_buf
[0]=s
->client_version
>>8;
1925 tmp_buf
[1]=s
->client_version
&0xff;
1926 if (RAND_bytes(&(tmp_buf
[2]),sizeof tmp_buf
-2) <= 0)
1929 /* 20010420 VRS. Tried it this way; failed.
1930 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
1931 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
1932 ** kssl_ctx->length);
1933 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
1936 memset(iv
, 0, sizeof iv
); /* per RFC 1510 */
1937 EVP_EncryptInit_ex(&ciph_ctx
,enc
, NULL
,
1939 EVP_EncryptUpdate(&ciph_ctx
,epms
,&outl
,tmp_buf
,
1941 EVP_EncryptFinal_ex(&ciph_ctx
,&(epms
[outl
]),&padl
);
1943 if (outl
> sizeof epms
)
1945 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
1948 EVP_CIPHER_CTX_cleanup(&ciph_ctx
);
1950 /* KerberosWrapper.EncryptedPreMasterSecret */
1952 memcpy(p
, epms
, outl
);
1956 s
->session
->master_key_length
=
1957 s
->method
->ssl3_enc
->generate_master_secret(s
,
1958 s
->session
->master_key
,
1959 tmp_buf
, sizeof tmp_buf
);
1961 OPENSSL_cleanse(tmp_buf
, sizeof tmp_buf
);
1962 OPENSSL_cleanse(epms
, outl
);
1965 #ifndef OPENSSL_NO_DH
1966 else if (l
& (SSL_kEDH
|SSL_kDHr
|SSL_kDHd
))
1968 DH
*dh_srvr
,*dh_clnt
;
1970 if (s
->session
->sess_cert
->peer_dh_tmp
!= NULL
)
1971 dh_srvr
=s
->session
->sess_cert
->peer_dh_tmp
;
1974 /* we get them from the cert */
1975 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_HANDSHAKE_FAILURE
);
1976 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS
);
1980 /* generate a new random key */
1981 if ((dh_clnt
=DHparams_dup(dh_srvr
)) == NULL
)
1983 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1986 if (!DH_generate_key(dh_clnt
))
1988 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1992 /* use the 'p' output buffer for the DH key, but
1993 * make sure to clear it out afterwards */
1995 n
=DH_compute_key(p
,dh_srvr
->pub_key
,dh_clnt
);
1999 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
2003 /* generate master key from the result */
2004 s
->session
->master_key_length
=
2005 s
->method
->ssl3_enc
->generate_master_secret(s
,
2006 s
->session
->master_key
,p
,n
);
2010 /* send off the data */
2011 n
=BN_num_bytes(dh_clnt
->pub_key
);
2013 BN_bn2bin(dh_clnt
->pub_key
,p
);
2018 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2022 #ifndef OPENSSL_NO_ECDH
2023 else if ((l
& SSL_kECDH
) || (l
& SSL_kECDHE
))
2025 const EC_GROUP
*srvr_group
= NULL
;
2027 int ecdh_clnt_cert
= 0;
2030 /* Did we send out the client's
2031 * ECDH share for use in premaster
2032 * computation as part of client certificate?
2033 * If so, set ecdh_clnt_cert to 1.
2035 if ((l
& SSL_kECDH
) && (s
->cert
!= NULL
))
2037 /* XXX: For now, we do not support client
2038 * authentication using ECDH certificates.
2039 * To add such support, one needs to add
2040 * code that checks for appropriate
2041 * conditions and sets ecdh_clnt_cert to 1.
2042 * For example, the cert have an ECC
2043 * key on the same curve as the server's
2044 * and the key should be authorized for
2047 * One also needs to add code in ssl3_connect
2048 * to skip sending the certificate verify
2051 * if ((s->cert->key->privatekey != NULL) &&
2052 * (s->cert->key->privatekey->type ==
2053 * EVP_PKEY_EC) && ...)
2054 * ecdh_clnt_cert = 1;
2058 if (s
->session
->sess_cert
->peer_ecdh_tmp
!= NULL
)
2060 tkey
= s
->session
->sess_cert
->peer_ecdh_tmp
;
2064 /* Get the Server Public Key from Cert */
2065 srvr_pub_pkey
= X509_get_pubkey(s
->session
-> \
2066 sess_cert
->peer_pkeys
[SSL_PKEY_ECC
].x509
);
2067 if ((srvr_pub_pkey
== NULL
) ||
2068 (srvr_pub_pkey
->type
!= EVP_PKEY_EC
) ||
2069 (srvr_pub_pkey
->pkey
.ec
== NULL
))
2071 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2072 ERR_R_INTERNAL_ERROR
);
2076 tkey
= srvr_pub_pkey
->pkey
.ec
;
2079 srvr_group
= EC_KEY_get0_group(tkey
);
2080 srvr_ecpoint
= EC_KEY_get0_public_key(tkey
);
2082 if ((srvr_group
== NULL
) || (srvr_ecpoint
== NULL
))
2084 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2085 ERR_R_INTERNAL_ERROR
);
2089 if ((clnt_ecdh
=EC_KEY_new()) == NULL
)
2091 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2095 if (!EC_KEY_set_group(clnt_ecdh
, srvr_group
))
2097 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_EC_LIB
);
2102 /* Reuse key info from our certificate
2103 * We only need our private key to perform
2104 * the ECDH computation.
2106 const BIGNUM
*priv_key
;
2107 tkey
= s
->cert
->key
->privatekey
->pkey
.ec
;
2108 priv_key
= EC_KEY_get0_private_key(tkey
);
2109 if (priv_key
== NULL
)
2111 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2114 if (!EC_KEY_set_private_key(clnt_ecdh
, priv_key
))
2116 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_EC_LIB
);
2122 /* Generate a new ECDH key pair */
2123 if (!(EC_KEY_generate_key(clnt_ecdh
)))
2125 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
, ERR_R_ECDH_LIB
);
2130 /* use the 'p' output buffer for the ECDH key, but
2131 * make sure to clear it out afterwards
2134 field_size
= EC_GROUP_get_degree(srvr_group
);
2135 if (field_size
<= 0)
2137 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2141 n
=ECDH_compute_key(p
, (field_size
+7)/8, srvr_ecpoint
, clnt_ecdh
, NULL
);
2144 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2149 /* generate master key from the result */
2150 s
->session
->master_key_length
= s
->method
->ssl3_enc \
2151 -> generate_master_secret(s
,
2152 s
->session
->master_key
,
2155 memset(p
, 0, n
); /* clean up */
2159 /* Send empty client key exch message */
2164 /* First check the size of encoding and
2165 * allocate memory accordingly.
2168 EC_POINT_point2oct(srvr_group
,
2169 EC_KEY_get0_public_key(clnt_ecdh
),
2170 POINT_CONVERSION_UNCOMPRESSED
,
2173 encodedPoint
= (unsigned char *)
2174 OPENSSL_malloc(encoded_pt_len
*
2175 sizeof(unsigned char));
2176 bn_ctx
= BN_CTX_new();
2177 if ((encodedPoint
== NULL
) ||
2180 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
2184 /* Encode the public key */
2185 n
= EC_POINT_point2oct(srvr_group
,
2186 EC_KEY_get0_public_key(clnt_ecdh
),
2187 POINT_CONVERSION_UNCOMPRESSED
,
2188 encodedPoint
, encoded_pt_len
, bn_ctx
);
2190 *p
= n
; /* length of encoded point */
2191 /* Encoded point will be copied here */
2193 /* copy the point */
2194 memcpy((unsigned char *)p
, encodedPoint
, n
);
2195 /* increment n to account for length field */
2199 /* Free allocated memory */
2200 BN_CTX_free(bn_ctx
);
2201 if (encodedPoint
!= NULL
) OPENSSL_free(encodedPoint
);
2202 if (clnt_ecdh
!= NULL
)
2203 EC_KEY_free(clnt_ecdh
);
2204 EVP_PKEY_free(srvr_pub_pkey
);
2206 #endif /* !OPENSSL_NO_ECDH */
2209 ssl3_send_alert(s
, SSL3_AL_FATAL
,
2210 SSL_AD_HANDSHAKE_FAILURE
);
2211 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,
2212 ERR_R_INTERNAL_ERROR
);
2216 *(d
++)=SSL3_MT_CLIENT_KEY_EXCHANGE
;
2219 s
->state
=SSL3_ST_CW_KEY_EXCH_B
;
2220 /* number of bytes to write */
2225 /* SSL3_ST_CW_KEY_EXCH_B */
2226 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
2228 #ifndef OPENSSL_NO_ECDH
2229 BN_CTX_free(bn_ctx
);
2230 if (encodedPoint
!= NULL
) OPENSSL_free(encodedPoint
);
2231 if (clnt_ecdh
!= NULL
)
2232 EC_KEY_free(clnt_ecdh
);
2233 EVP_PKEY_free(srvr_pub_pkey
);
2238 int ssl3_send_client_verify(SSL
*s
)
2240 unsigned char *p
,*d
;
2241 unsigned char data
[MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
];
2243 #ifndef OPENSSL_NO_RSA
2247 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2251 if (s
->state
== SSL3_ST_CW_CERT_VRFY_A
)
2253 d
=(unsigned char *)s
->init_buf
->data
;
2255 pkey
=s
->cert
->key
->privatekey
;
2257 s
->method
->ssl3_enc
->cert_verify_mac(s
,&(s
->s3
->finish_dgst2
),
2258 &(data
[MD5_DIGEST_LENGTH
]));
2260 #ifndef OPENSSL_NO_RSA
2261 if (pkey
->type
== EVP_PKEY_RSA
)
2263 s
->method
->ssl3_enc
->cert_verify_mac(s
,
2264 &(s
->s3
->finish_dgst1
),&(data
[0]));
2265 if (RSA_sign(NID_md5_sha1
, data
,
2266 MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
,
2267 &(p
[2]), &u
, pkey
->pkey
.rsa
) <= 0 )
2269 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_RSA_LIB
);
2277 #ifndef OPENSSL_NO_DSA
2278 if (pkey
->type
== EVP_PKEY_DSA
)
2280 if (!DSA_sign(pkey
->save_type
,
2281 &(data
[MD5_DIGEST_LENGTH
]),
2282 SHA_DIGEST_LENGTH
,&(p
[2]),
2283 (unsigned int *)&j
,pkey
->pkey
.dsa
))
2285 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_DSA_LIB
);
2293 #ifndef OPENSSL_NO_ECDSA
2294 if (pkey
->type
== EVP_PKEY_EC
)
2296 if (!ECDSA_sign(pkey
->save_type
,
2297 &(data
[MD5_DIGEST_LENGTH
]),
2298 SHA_DIGEST_LENGTH
,&(p
[2]),
2299 (unsigned int *)&j
,pkey
->pkey
.ec
))
2301 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,
2311 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_INTERNAL_ERROR
);
2314 *(d
++)=SSL3_MT_CERTIFICATE_VERIFY
;
2317 s
->state
=SSL3_ST_CW_CERT_VRFY_B
;
2318 s
->init_num
=(int)n
+4;
2321 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
2326 int ssl3_send_client_certificate(SSL
*s
)
2329 EVP_PKEY
*pkey
=NULL
;
2333 if (s
->state
== SSL3_ST_CW_CERT_A
)
2335 if ((s
->cert
== NULL
) ||
2336 (s
->cert
->key
->x509
== NULL
) ||
2337 (s
->cert
->key
->privatekey
== NULL
))
2338 s
->state
=SSL3_ST_CW_CERT_B
;
2340 s
->state
=SSL3_ST_CW_CERT_C
;
2343 /* We need to get a client cert */
2344 if (s
->state
== SSL3_ST_CW_CERT_B
)
2346 /* If we get an error, we need to
2347 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2348 * We then get retied later */
2350 if (s
->ctx
->client_cert_cb
!= NULL
)
2351 i
=s
->ctx
->client_cert_cb(s
,&(x509
),&(pkey
));
2354 s
->rwstate
=SSL_X509_LOOKUP
;
2357 s
->rwstate
=SSL_NOTHING
;
2358 if ((i
== 1) && (pkey
!= NULL
) && (x509
!= NULL
))
2360 s
->state
=SSL3_ST_CW_CERT_B
;
2361 if ( !SSL_use_certificate(s
,x509
) ||
2362 !SSL_use_PrivateKey(s
,pkey
))
2368 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE
,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK
);
2371 if (x509
!= NULL
) X509_free(x509
);
2372 if (pkey
!= NULL
) EVP_PKEY_free(pkey
);
2375 if (s
->version
== SSL3_VERSION
)
2377 s
->s3
->tmp
.cert_req
=0;
2378 ssl3_send_alert(s
,SSL3_AL_WARNING
,SSL_AD_NO_CERTIFICATE
);
2383 s
->s3
->tmp
.cert_req
=2;
2387 /* Ok, we have a cert */
2388 s
->state
=SSL3_ST_CW_CERT_C
;
2391 if (s
->state
== SSL3_ST_CW_CERT_C
)
2393 s
->state
=SSL3_ST_CW_CERT_D
;
2394 l
=ssl3_output_cert_chain(s
,
2395 (s
->s3
->tmp
.cert_req
== 2)?NULL
:s
->cert
->key
->x509
);
2399 /* SSL3_ST_CW_CERT_D */
2400 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
2403 #define has_bits(i,m) (((i)&(m)) == (m))
2405 int ssl3_check_cert_and_algorithm(SSL
*s
)
2409 EVP_PKEY
*pkey
=NULL
;
2411 #ifndef OPENSSL_NO_RSA
2414 #ifndef OPENSSL_NO_DH
2418 sc
=s
->session
->sess_cert
;
2420 algs
=s
->s3
->tmp
.new_cipher
->algorithms
;
2422 /* we don't have a certificate */
2423 if (algs
& (SSL_aDH
|SSL_aNULL
|SSL_aKRB5
))
2428 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,ERR_R_INTERNAL_ERROR
);
2432 #ifndef OPENSSL_NO_RSA
2433 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
2435 #ifndef OPENSSL_NO_DH
2436 dh
=s
->session
->sess_cert
->peer_dh_tmp
;
2439 /* This is the passed certificate */
2441 idx
=sc
->peer_cert_type
;
2442 #ifndef OPENSSL_NO_ECDH
2443 if (idx
== SSL_PKEY_ECC
)
2445 if (check_srvr_ecc_cert_and_alg(sc
->peer_pkeys
[idx
].x509
,
2446 s
->s3
->tmp
.new_cipher
) == 0)
2447 { /* check failed */
2448 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_BAD_ECC_CERT
);
2457 pkey
=X509_get_pubkey(sc
->peer_pkeys
[idx
].x509
);
2458 i
=X509_certificate_type(sc
->peer_pkeys
[idx
].x509
,pkey
);
2459 EVP_PKEY_free(pkey
);
2462 /* Check that we have a certificate if we require one */
2463 if ((algs
& SSL_aRSA
) && !has_bits(i
,EVP_PK_RSA
|EVP_PKT_SIGN
))
2465 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_SIGNING_CERT
);
2468 #ifndef OPENSSL_NO_DSA
2469 else if ((algs
& SSL_aDSS
) && !has_bits(i
,EVP_PK_DSA
|EVP_PKT_SIGN
))
2471 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DSA_SIGNING_CERT
);
2475 #ifndef OPENSSL_NO_RSA
2476 if ((algs
& SSL_kRSA
) &&
2477 !(has_bits(i
,EVP_PK_RSA
|EVP_PKT_ENC
) || (rsa
!= NULL
)))
2479 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_ENCRYPTING_CERT
);
2483 #ifndef OPENSSL_NO_DH
2484 if ((algs
& SSL_kEDH
) &&
2485 !(has_bits(i
,EVP_PK_DH
|EVP_PKT_EXCH
) || (dh
!= NULL
)))
2487 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_KEY
);
2490 else if ((algs
& SSL_kDHr
) && !has_bits(i
,EVP_PK_DH
|EVP_PKS_RSA
))
2492 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_RSA_CERT
);
2495 #ifndef OPENSSL_NO_DSA
2496 else if ((algs
& SSL_kDHd
) && !has_bits(i
,EVP_PK_DH
|EVP_PKS_DSA
))
2498 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_DSA_CERT
);
2504 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) && !has_bits(i
,EVP_PKT_EXP
))
2506 #ifndef OPENSSL_NO_RSA
2507 if (algs
& SSL_kRSA
)
2510 || RSA_size(rsa
)*8 > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
2512 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_RSA_KEY
);
2518 #ifndef OPENSSL_NO_DH
2519 if (algs
& (SSL_kEDH
|SSL_kDHr
|SSL_kDHd
))
2522 || DH_size(dh
)*8 > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
2524 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_DH_KEY
);
2531 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE
);
2537 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_HANDSHAKE_FAILURE
);
2543 #ifndef OPENSSL_NO_ECDH
2544 /* This is the complement of nid2curve_id in s3_srvr.c. */
2545 static int curve_id2nid(int curve_id
)
2547 /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001)
2548 * (no changes in draft-ietf-tls-ecc-03.txt [June 2003]) */
2549 static int nid_list
[26] =
2552 NID_sect163k1
, /* sect163k1 (1) */
2553 NID_sect163r1
, /* sect163r1 (2) */
2554 NID_sect163r2
, /* sect163r2 (3) */
2555 NID_sect193r1
, /* sect193r1 (4) */
2556 NID_sect193r2
, /* sect193r2 (5) */
2557 NID_sect233k1
, /* sect233k1 (6) */
2558 NID_sect233r1
, /* sect233r1 (7) */
2559 NID_sect239k1
, /* sect239k1 (8) */
2560 NID_sect283k1
, /* sect283k1 (9) */
2561 NID_sect283r1
, /* sect283r1 (10) */
2562 NID_sect409k1
, /* sect409k1 (11) */
2563 NID_sect409r1
, /* sect409r1 (12) */
2564 NID_sect571k1
, /* sect571k1 (13) */
2565 NID_sect571r1
, /* sect571r1 (14) */
2566 NID_secp160k1
, /* secp160k1 (15) */
2567 NID_secp160r1
, /* secp160r1 (16) */
2568 NID_secp160r2
, /* secp160r2 (17) */
2569 NID_secp192k1
, /* secp192k1 (18) */
2570 NID_X9_62_prime192v1
, /* secp192r1 (19) */
2571 NID_secp224k1
, /* secp224k1 (20) */
2572 NID_secp224r1
, /* secp224r1 (21) */
2573 NID_secp256k1
, /* secp256k1 (22) */
2574 NID_X9_62_prime256v1
, /* secp256r1 (23) */
2575 NID_secp384r1
, /* secp384r1 (24) */
2576 NID_secp521r1
/* secp521r1 (25) */
2579 if ((curve_id
< 1) || (curve_id
> 25)) return 0;
2581 return nid_list
[curve_id
];
2585 /* Check to see if handshake is full or resumed. Usually this is just a
2586 * case of checking to see if a cache hit has occurred. In the case of
2587 * session tickets we have to check the next message to be sure.
2590 #ifndef OPENSSL_NO_TLSEXT
2591 static int ssl3_check_finished(SSL
*s
)
2595 if (!s
->session
->tlsext_tick
)
2597 /* this function is called when we really expect a Certificate
2598 * message, so permit appropriate message length */
2599 n
=s
->method
->ssl_get_message(s
,
2605 if (!ok
) return((int)n
);
2606 s
->s3
->tmp
.reuse_message
= 1;
2607 if ((s
->s3
->tmp
.message_type
== SSL3_MT_FINISHED
)
2608 || (s
->s3
->tmp
.message_type
== SSL3_MT_NEWSESSION_TICKET
))