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.]
60 #include <openssl/buffer.h>
61 #include <openssl/rand.h>
62 #include <openssl/objects.h>
63 #include <openssl/md5.h>
64 #include <openssl/sha.h>
65 #include <openssl/evp.h>
68 #ifndef OPENSSL_NO_KRB5
72 static SSL_METHOD
*ssl3_get_client_method(int ver
);
73 static int ssl3_client_hello(SSL
*s
);
74 static int ssl3_get_server_hello(SSL
*s
);
75 static int ssl3_get_certificate_request(SSL
*s
);
76 static int ca_dn_cmp(const X509_NAME
* const *a
,const X509_NAME
* const *b
);
77 static int ssl3_get_server_done(SSL
*s
);
78 static int ssl3_send_client_verify(SSL
*s
);
79 static int ssl3_send_client_certificate(SSL
*s
);
80 static int ssl3_send_client_key_exchange(SSL
*s
);
81 static int ssl3_get_key_exchange(SSL
*s
);
82 static int ssl3_get_server_certificate(SSL
*s
);
83 static int ssl3_check_cert_and_algorithm(SSL
*s
);
84 static SSL_METHOD
*ssl3_get_client_method(int ver
)
86 if (ver
== SSL3_VERSION
)
87 return(SSLv3_client_method());
92 SSL_METHOD
*SSLv3_client_method(void)
95 static SSL_METHOD SSLv3_client_data
;
100 memcpy((char *)&SSLv3_client_data
,(char *)sslv3_base_method(),
102 SSLv3_client_data
.ssl_connect
=ssl3_connect
;
103 SSLv3_client_data
.get_ssl_method
=ssl3_get_client_method
;
105 return(&SSLv3_client_data
);
108 int ssl3_connect(SSL
*s
)
111 unsigned long Time
=time(NULL
),l
;
115 int new_state
,state
,skip
=0;;
117 RAND_add(&Time
,sizeof(Time
),0);
121 if (s
->info_callback
!= NULL
)
123 else if (s
->ctx
->info_callback
!= NULL
)
124 cb
=s
->ctx
->info_callback
;
126 if (!SSL_in_init(s
) || SSL_in_before(s
)) SSL_clear(s
);
135 case SSL_ST_RENEGOTIATE
:
137 s
->state
=SSL_ST_CONNECT
;
138 s
->ctx
->stats
.sess_connect_renegotiate
++;
142 case SSL_ST_BEFORE
|SSL_ST_CONNECT
:
143 case SSL_ST_OK
|SSL_ST_CONNECT
:
146 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_START
,1);
148 if ((s
->version
& 0xff00 ) != 0x0300)
150 SSLerr(SSL_F_SSL3_CONNECT
, SSL_R_INTERNAL_ERROR
);
155 /* s->version=SSL3_VERSION; */
156 s
->type
=SSL_ST_CONNECT
;
158 if (s
->init_buf
== NULL
)
160 if ((buf
=BUF_MEM_new()) == NULL
)
165 if (!BUF_MEM_grow(buf
,SSL3_RT_MAX_PLAIN_LENGTH
))
173 if (!ssl3_setup_buffers(s
)) { ret
= -1; goto end
; }
175 /* setup buffing BIO */
176 if (!ssl_init_wbio_buffer(s
,0)) { ret
= -1; goto end
; }
178 /* don't push the buffering BIO quite yet */
180 ssl3_init_finished_mac(s
);
182 s
->state
=SSL3_ST_CW_CLNT_HELLO_A
;
183 s
->ctx
->stats
.sess_connect
++;
187 case SSL3_ST_CW_CLNT_HELLO_A
:
188 case SSL3_ST_CW_CLNT_HELLO_B
:
191 ret
=ssl3_client_hello(s
);
192 if (ret
<= 0) goto end
;
193 s
->state
=SSL3_ST_CR_SRVR_HELLO_A
;
196 /* turn on buffering for the next lot of output */
197 if (s
->bbio
!= s
->wbio
)
198 s
->wbio
=BIO_push(s
->bbio
,s
->wbio
);
202 case SSL3_ST_CR_SRVR_HELLO_A
:
203 case SSL3_ST_CR_SRVR_HELLO_B
:
204 ret
=ssl3_get_server_hello(s
);
205 if (ret
<= 0) goto end
;
207 s
->state
=SSL3_ST_CR_FINISHED_A
;
209 s
->state
=SSL3_ST_CR_CERT_A
;
213 case SSL3_ST_CR_CERT_A
:
214 case SSL3_ST_CR_CERT_B
:
215 /* Check if it is anon DH */
216 if (!(s
->s3
->tmp
.new_cipher
->algorithms
& SSL_aNULL
))
218 ret
=ssl3_get_server_certificate(s
);
219 if (ret
<= 0) goto end
;
223 s
->state
=SSL3_ST_CR_KEY_EXCH_A
;
227 case SSL3_ST_CR_KEY_EXCH_A
:
228 case SSL3_ST_CR_KEY_EXCH_B
:
229 ret
=ssl3_get_key_exchange(s
);
230 if (ret
<= 0) goto end
;
231 s
->state
=SSL3_ST_CR_CERT_REQ_A
;
234 /* at this point we check that we have the
235 * required stuff from the server */
236 if (!ssl3_check_cert_and_algorithm(s
))
243 case SSL3_ST_CR_CERT_REQ_A
:
244 case SSL3_ST_CR_CERT_REQ_B
:
245 ret
=ssl3_get_certificate_request(s
);
246 if (ret
<= 0) goto end
;
247 s
->state
=SSL3_ST_CR_SRVR_DONE_A
;
251 case SSL3_ST_CR_SRVR_DONE_A
:
252 case SSL3_ST_CR_SRVR_DONE_B
:
253 ret
=ssl3_get_server_done(s
);
254 if (ret
<= 0) goto end
;
255 if (s
->s3
->tmp
.cert_req
)
256 s
->state
=SSL3_ST_CW_CERT_A
;
258 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
263 case SSL3_ST_CW_CERT_A
:
264 case SSL3_ST_CW_CERT_B
:
265 case SSL3_ST_CW_CERT_C
:
266 case SSL3_ST_CW_CERT_D
:
267 ret
=ssl3_send_client_certificate(s
);
268 if (ret
<= 0) goto end
;
269 s
->state
=SSL3_ST_CW_KEY_EXCH_A
;
273 case SSL3_ST_CW_KEY_EXCH_A
:
274 case SSL3_ST_CW_KEY_EXCH_B
:
275 ret
=ssl3_send_client_key_exchange(s
);
276 if (ret
<= 0) goto end
;
277 l
=s
->s3
->tmp
.new_cipher
->algorithms
;
278 /* EAY EAY EAY need to check for DH fix cert
280 /* For TLS, cert_req is set to 2, so a cert chain
281 * of nothing is sent, but no verify packet is sent */
282 if (s
->s3
->tmp
.cert_req
== 1)
284 s
->state
=SSL3_ST_CW_CERT_VRFY_A
;
288 s
->state
=SSL3_ST_CW_CHANGE_A
;
289 s
->s3
->change_cipher_spec
=0;
295 case SSL3_ST_CW_CERT_VRFY_A
:
296 case SSL3_ST_CW_CERT_VRFY_B
:
297 ret
=ssl3_send_client_verify(s
);
298 if (ret
<= 0) goto end
;
299 s
->state
=SSL3_ST_CW_CHANGE_A
;
301 s
->s3
->change_cipher_spec
=0;
304 case SSL3_ST_CW_CHANGE_A
:
305 case SSL3_ST_CW_CHANGE_B
:
306 ret
=ssl3_send_change_cipher_spec(s
,
307 SSL3_ST_CW_CHANGE_A
,SSL3_ST_CW_CHANGE_B
);
308 if (ret
<= 0) goto end
;
309 s
->state
=SSL3_ST_CW_FINISHED_A
;
312 s
->session
->cipher
=s
->s3
->tmp
.new_cipher
;
313 if (s
->s3
->tmp
.new_compression
== NULL
)
314 s
->session
->compress_meth
=0;
316 s
->session
->compress_meth
=
317 s
->s3
->tmp
.new_compression
->id
;
318 if (!s
->method
->ssl3_enc
->setup_key_block(s
))
324 if (!s
->method
->ssl3_enc
->change_cipher_state(s
,
325 SSL3_CHANGE_CIPHER_CLIENT_WRITE
))
333 case SSL3_ST_CW_FINISHED_A
:
334 case SSL3_ST_CW_FINISHED_B
:
335 ret
=ssl3_send_finished(s
,
336 SSL3_ST_CW_FINISHED_A
,SSL3_ST_CW_FINISHED_B
,
337 s
->method
->ssl3_enc
->client_finished_label
,
338 s
->method
->ssl3_enc
->client_finished_label_len
);
339 if (ret
<= 0) goto end
;
340 s
->state
=SSL3_ST_CW_FLUSH
;
343 s
->s3
->flags
&= ~SSL3_FLAGS_POP_BUFFER
;
346 s
->s3
->tmp
.next_state
=SSL_ST_OK
;
347 if (s
->s3
->flags
& SSL3_FLAGS_DELAY_CLIENT_FINISHED
)
350 s
->s3
->flags
|=SSL3_FLAGS_POP_BUFFER
;
351 s
->s3
->delay_buf_pop_ret
=0;
356 s
->s3
->tmp
.next_state
=SSL3_ST_CR_FINISHED_A
;
361 case SSL3_ST_CR_FINISHED_A
:
362 case SSL3_ST_CR_FINISHED_B
:
364 ret
=ssl3_get_finished(s
,SSL3_ST_CR_FINISHED_A
,
365 SSL3_ST_CR_FINISHED_B
);
366 if (ret
<= 0) goto end
;
369 s
->state
=SSL3_ST_CW_CHANGE_A
;
375 case SSL3_ST_CW_FLUSH
:
376 /* number of bytes to be flushed */
377 num1
=BIO_ctrl(s
->wbio
,BIO_CTRL_INFO
,0,NULL
);
380 s
->rwstate
=SSL_WRITING
;
381 num1
=BIO_flush(s
->wbio
);
382 if (num1
<= 0) { ret
= -1; goto end
; }
383 s
->rwstate
=SSL_NOTHING
;
386 s
->state
=s
->s3
->tmp
.next_state
;
390 /* clean a few things up */
391 ssl3_cleanup_key_block(s
);
393 if (s
->init_buf
!= NULL
)
395 BUF_MEM_free(s
->init_buf
);
399 /* If we are not 'joining' the last two packets,
400 * remove the buffering now */
401 if (!(s
->s3
->flags
& SSL3_FLAGS_POP_BUFFER
))
402 ssl_free_wbio_buffer(s
);
403 /* else do it later in ssl3_write */
408 ssl_update_cache(s
,SSL_SESS_CACHE_CLIENT
);
409 if (s
->hit
) s
->ctx
->stats
.sess_hit
++;
413 s
->handshake_func
=ssl3_connect
;
414 s
->ctx
->stats
.sess_connect_good
++;
416 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_DONE
,1);
422 SSLerr(SSL_F_SSL3_CONNECT
,SSL_R_UNKNOWN_STATE
);
428 /* did we do anything */
429 if (!s
->s3
->tmp
.reuse_message
&& !skip
)
433 if ((ret
=BIO_flush(s
->wbio
)) <= 0)
437 if ((cb
!= NULL
) && (s
->state
!= state
))
441 cb(s
,SSL_CB_CONNECT_LOOP
,1);
449 cb(s
,SSL_CB_CONNECT_EXIT
,ret
);
455 static int ssl3_client_hello(SSL
*s
)
460 unsigned long Time
,l
;
463 buf
=(unsigned char *)s
->init_buf
->data
;
464 if (s
->state
== SSL3_ST_CW_CLNT_HELLO_A
)
466 if ((s
->session
== NULL
) ||
467 (s
->session
->ssl_version
!= s
->version
) ||
468 (s
->session
->not_resumable
))
470 if (!ssl_get_new_session(s
,0))
473 /* else use the pre-loaded session */
475 p
=s
->s3
->client_random
;
476 Time
=time(NULL
); /* Time */
478 RAND_pseudo_bytes(p
,SSL3_RANDOM_SIZE
-sizeof(Time
));
480 /* Do the message type and length last */
483 *(p
++)=s
->version
>>8;
484 *(p
++)=s
->version
&0xff;
485 s
->client_version
=s
->version
;
488 memcpy(p
,s
->s3
->client_random
,SSL3_RANDOM_SIZE
);
495 i
=s
->session
->session_id_length
;
499 memcpy(p
,s
->session
->session_id
,i
);
503 /* Ciphers supported */
504 i
=ssl_cipher_list_to_bytes(s
,SSL_get_ciphers(s
),&(p
[2]));
507 SSLerr(SSL_F_SSL3_CLIENT_HELLO
,SSL_R_NO_CIPHERS_AVAILABLE
);
514 if (s
->ctx
->comp_methods
== NULL
)
517 j
=sk_SSL_COMP_num(s
->ctx
->comp_methods
);
521 comp
=sk_SSL_COMP_value(s
->ctx
->comp_methods
,i
);
524 *(p
++)=0; /* Add the NULL method */
528 *(d
++)=SSL3_MT_CLIENT_HELLO
;
531 s
->state
=SSL3_ST_CW_CLNT_HELLO_B
;
532 /* number of bytes to write */
537 /* SSL3_ST_CW_CLNT_HELLO_B */
538 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
543 static int ssl3_get_server_hello(SSL
*s
)
545 STACK_OF(SSL_CIPHER
) *sk
;
553 n
=ssl3_get_message(s
,
554 SSL3_ST_CR_SRVR_HELLO_A
,
555 SSL3_ST_CR_SRVR_HELLO_B
,
556 SSL3_MT_SERVER_HELLO
,
560 if (!ok
) return((int)n
);
561 d
=p
=(unsigned char *)s
->init_buf
->data
;
563 if ((p
[0] != (s
->version
>>8)) || (p
[1] != (s
->version
&0xff)))
565 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_SSL_VERSION
);
566 s
->version
=(s
->version
&0xff00)|p
[1];
567 al
=SSL_AD_PROTOCOL_VERSION
;
572 /* load the server hello data */
573 /* load the server random */
574 memcpy(s
->s3
->server_random
,p
,SSL3_RANDOM_SIZE
);
577 /* get the session-id */
580 if ((j
!= 0) && (j
!= SSL3_SESSION_ID_SIZE
))
582 /* SSLref returns 16 :-( */
583 if (j
< SSL2_SSL_SESSION_ID_LENGTH
)
585 al
=SSL_AD_ILLEGAL_PARAMETER
;
586 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_SSL3_SESSION_ID_TOO_SHORT
);
590 if (j
!= 0 && j
== s
->session
->session_id_length
591 && memcmp(p
,s
->session
->session_id
,j
) == 0)
593 if(s
->sid_ctx_length
!= s
->session
->sid_ctx_length
594 || memcmp(s
->session
->sid_ctx
,s
->sid_ctx
,s
->sid_ctx_length
))
596 al
=SSL_AD_ILLEGAL_PARAMETER
;
597 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT
);
602 else /* a miss or crap from the other end */
604 /* If we were trying for session-id reuse, make a new
605 * SSL_SESSION so we don't stuff up other people */
607 if (s
->session
->session_id_length
> 0)
609 if (!ssl_get_new_session(s
,0))
611 al
=SSL_AD_INTERNAL_ERROR
;
615 s
->session
->session_id_length
=j
;
616 memcpy(s
->session
->session_id
,p
,j
); /* j could be 0 */
619 c
=ssl_get_cipher_by_char(s
,p
);
623 al
=SSL_AD_ILLEGAL_PARAMETER
;
624 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNKNOWN_CIPHER_RETURNED
);
627 p
+=ssl_put_cipher_by_char(s
,NULL
,NULL
);
629 sk
=ssl_get_ciphers_by_id(s
);
630 i
=sk_SSL_CIPHER_find(sk
,c
);
633 /* we did not say we would use this cipher */
634 al
=SSL_AD_ILLEGAL_PARAMETER
;
635 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_WRONG_CIPHER_RETURNED
);
639 if (s
->hit
&& (s
->session
->cipher
!= c
))
642 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
))
644 al
=SSL_AD_ILLEGAL_PARAMETER
;
645 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED
);
649 s
->s3
->tmp
.new_cipher
=c
;
651 /* lets get the compression algorithm */
657 comp
=ssl3_comp_find(s
->ctx
->comp_methods
,j
);
659 if ((j
!= 0) && (comp
== NULL
))
661 al
=SSL_AD_ILLEGAL_PARAMETER
;
662 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
667 s
->s3
->tmp
.new_compression
=comp
;
672 /* wrong packet length */
673 al
=SSL_AD_DECODE_ERROR
;
674 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO
,SSL_R_BAD_PACKET_LENGTH
);
680 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
685 static int ssl3_get_server_certificate(SSL
*s
)
688 unsigned long n
,nc
,llen
,l
;
690 unsigned char *p
,*d
,*q
;
691 STACK_OF(X509
) *sk
=NULL
;
694 int need_cert
= 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
696 n
=ssl3_get_message(s
,
700 #if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN32)
701 1024*30, /* 30k max cert list :-) */
703 1024*100, /* 100k max cert list :-) */
707 if (!ok
) return((int)n
);
709 if (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_KEY_EXCHANGE
)
711 s
->s3
->tmp
.reuse_message
=1;
715 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE
)
717 al
=SSL_AD_UNEXPECTED_MESSAGE
;
718 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_BAD_MESSAGE_TYPE
);
721 d
=p
=(unsigned char *)s
->init_buf
->data
;
723 if ((sk
=sk_X509_new_null()) == NULL
)
725 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
732 al
=SSL_AD_DECODE_ERROR
;
733 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_LENGTH_MISMATCH
);
736 for (nc
=0; nc
<llen
; )
741 al
=SSL_AD_DECODE_ERROR
;
742 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
747 x
=d2i_X509(NULL
,&q
,l
);
750 al
=SSL_AD_BAD_CERTIFICATE
;
751 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_ASN1_LIB
);
756 al
=SSL_AD_DECODE_ERROR
;
757 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERT_LENGTH_MISMATCH
);
760 if (!sk_X509_push(sk
,x
))
762 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
770 i
=ssl_verify_cert_chain(s
,sk
);
771 if ((s
->verify_mode
!= SSL_VERIFY_NONE
) && (!i
))
773 al
=ssl_verify_alarm_type(s
->verify_result
);
774 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_CERTIFICATE_VERIFY_FAILED
);
777 ERR_clear_error(); /* but we keep s->verify_result */
779 sc
=ssl_sess_cert_new();
780 if (sc
== NULL
) goto err
;
782 if (s
->session
->sess_cert
) ssl_sess_cert_free(s
->session
->sess_cert
);
783 s
->session
->sess_cert
=sc
;
786 /* Inconsistency alert: cert_chain does include the peer's
787 * certificate, which we don't include in s3_srvr.c */
788 x
=sk_X509_value(sk
,0);
790 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end */
792 pkey
=X509_get_pubkey(x
);
794 /* VRS: allow null cert if auth == KRB5 */
796 ((s
->s3
->tmp
.new_cipher
->algorithms
& (SSL_MKEY_MASK
|SSL_AUTH_MASK
))
797 == (SSL_aKRB5
|SSL_kKRB5
))? 0: 1;
800 printf("pkey,x = %p, %p\n", pkey
,x
);
801 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x
,pkey
));
802 printf("cipher, alg, nc = %s, %lx, %d\n", s
->s3
->tmp
.new_cipher
->name
,
803 s
->s3
->tmp
.new_cipher
->algorithms
, need_cert
);
804 #endif /* KSSL_DEBUG */
806 if (need_cert
&& ((pkey
== NULL
) || EVP_PKEY_missing_parameters(pkey
)))
810 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS
);
814 i
=ssl_cert_type(x
,pkey
);
815 if (need_cert
&& i
< 0)
819 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE
,SSL_R_UNKNOWN_CERTIFICATE_TYPE
);
825 sc
->peer_cert_type
=i
;
826 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
827 /* Why would the following ever happen?
828 * We just created sc a couple of lines ago. */
829 if (sc
->peer_pkeys
[i
].x509
!= NULL
)
830 X509_free(sc
->peer_pkeys
[i
].x509
);
831 sc
->peer_pkeys
[i
].x509
=x
;
832 sc
->peer_key
= &(sc
->peer_pkeys
[i
]);
834 if (s
->session
->peer
!= NULL
)
835 X509_free(s
->session
->peer
);
836 CRYPTO_add(&x
->references
,1,CRYPTO_LOCK_X509
);
841 sc
->peer_cert_type
=i
;
844 if (s
->session
->peer
!= NULL
)
845 X509_free(s
->session
->peer
);
846 s
->session
->peer
=NULL
;
848 s
->session
->verify_result
= s
->verify_result
;
856 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
861 sk_X509_pop_free(sk
,X509_free
);
865 static int ssl3_get_key_exchange(SSL
*s
)
867 #ifndef OPENSSL_NO_RSA
868 unsigned char *q
,md_buf
[EVP_MAX_MD_SIZE
*2];
871 unsigned char *param
,*p
;
872 int al
,i
,j
,param_len
,ok
;
875 #ifndef OPENSSL_NO_RSA
878 #ifndef OPENSSL_NO_DH
882 n
=ssl3_get_message(s
,
883 SSL3_ST_CR_KEY_EXCH_A
,
884 SSL3_ST_CR_KEY_EXCH_B
,
889 if (!ok
) return((int)n
);
891 if (s
->s3
->tmp
.message_type
!= SSL3_MT_SERVER_KEY_EXCHANGE
)
893 s
->s3
->tmp
.reuse_message
=1;
897 param
=p
=(unsigned char *)s
->init_buf
->data
;
899 if (s
->session
->sess_cert
!= NULL
)
901 #ifndef OPENSSL_NO_RSA
902 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
904 RSA_free(s
->session
->sess_cert
->peer_rsa_tmp
);
905 s
->session
->sess_cert
->peer_rsa_tmp
=NULL
;
908 #ifndef OPENSSL_NO_DH
909 if (s
->session
->sess_cert
->peer_dh_tmp
)
911 DH_free(s
->session
->sess_cert
->peer_dh_tmp
);
912 s
->session
->sess_cert
->peer_dh_tmp
=NULL
;
918 s
->session
->sess_cert
=ssl_sess_cert_new();
922 alg
=s
->s3
->tmp
.new_cipher
->algorithms
;
924 #ifndef OPENSSL_NO_RSA
927 if ((rsa
=RSA_new()) == NULL
)
929 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_MALLOC_FAILURE
);
936 al
=SSL_AD_DECODE_ERROR
;
937 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_MODULUS_LENGTH
);
940 if (!(rsa
->n
=BN_bin2bn(p
,i
,rsa
->n
)))
942 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
951 al
=SSL_AD_DECODE_ERROR
;
952 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_E_LENGTH
);
955 if (!(rsa
->e
=BN_bin2bn(p
,i
,rsa
->e
)))
957 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
963 /* this should be because we are using an export cipher */
965 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
968 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_INTERNAL_ERROR
);
971 s
->session
->sess_cert
->peer_rsa_tmp
=rsa
;
974 #else /* OPENSSL_NO_RSA */
978 #ifndef OPENSSL_NO_DH
979 else if (alg
& SSL_kEDH
)
981 if ((dh
=DH_new()) == NULL
)
983 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_DH_LIB
);
990 al
=SSL_AD_DECODE_ERROR
;
991 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_P_LENGTH
);
994 if (!(dh
->p
=BN_bin2bn(p
,i
,NULL
)))
996 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1005 al
=SSL_AD_DECODE_ERROR
;
1006 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_G_LENGTH
);
1009 if (!(dh
->g
=BN_bin2bn(p
,i
,NULL
)))
1011 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1020 al
=SSL_AD_DECODE_ERROR
;
1021 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_DH_PUB_KEY_LENGTH
);
1024 if (!(dh
->pub_key
=BN_bin2bn(p
,i
,NULL
)))
1026 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,ERR_R_BN_LIB
);
1032 #ifndef OPENSSL_NO_RSA
1034 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1039 #ifndef OPENSSL_NO_DSA
1040 else if (alg
& SSL_aDSS
)
1041 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_DSA_SIGN
].x509
);
1043 /* else anonymous DH, so no certificate or pkey. */
1045 s
->session
->sess_cert
->peer_dh_tmp
=dh
;
1048 else if ((alg
& SSL_kDHr
) || (alg
& SSL_kDHd
))
1050 al
=SSL_AD_ILLEGAL_PARAMETER
;
1051 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER
);
1054 #endif /* !OPENSSL_NO_DH */
1057 al
=SSL_AD_HANDSHAKE_FAILURE
;
1058 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER
);
1063 /* p points to the next byte, there are 'n' bytes left */
1066 /* if it was signed, check the signature */
1071 j
=EVP_PKEY_size(pkey
);
1073 if ((i
!= n
) || (n
> j
) || (n
<= 0))
1075 /* wrong packet length */
1076 al
=SSL_AD_DECODE_ERROR
;
1077 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_WRONG_SIGNATURE_LENGTH
);
1081 #ifndef OPENSSL_NO_RSA
1082 if (pkey
->type
== EVP_PKEY_RSA
)
1088 for (num
=2; num
> 0; num
--)
1090 EVP_DigestInit(&md_ctx
,(num
== 2)
1091 ?s
->ctx
->md5
:s
->ctx
->sha1
);
1092 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1093 EVP_DigestUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1094 EVP_DigestUpdate(&md_ctx
,param
,param_len
);
1095 EVP_DigestFinal(&md_ctx
,q
,(unsigned int *)&i
);
1099 i
=RSA_verify(NID_md5_sha1
, md_buf
, j
, p
, n
,
1103 al
=SSL_AD_DECRYPT_ERROR
;
1104 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_RSA_DECRYPT
);
1110 al
=SSL_AD_DECRYPT_ERROR
;
1111 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1117 #ifndef OPENSSL_NO_DSA
1118 if (pkey
->type
== EVP_PKEY_DSA
)
1121 EVP_VerifyInit(&md_ctx
,EVP_dss1());
1122 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->client_random
[0]),SSL3_RANDOM_SIZE
);
1123 EVP_VerifyUpdate(&md_ctx
,&(s
->s3
->server_random
[0]),SSL3_RANDOM_SIZE
);
1124 EVP_VerifyUpdate(&md_ctx
,param
,param_len
);
1125 if (!EVP_VerifyFinal(&md_ctx
,p
,(int)n
,pkey
))
1128 al
=SSL_AD_DECRYPT_ERROR
;
1129 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_BAD_SIGNATURE
);
1136 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_INTERNAL_ERROR
);
1142 /* still data left over */
1143 if (!(alg
& SSL_aNULL
))
1145 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_INTERNAL_ERROR
);
1150 al
=SSL_AD_DECODE_ERROR
;
1151 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE
,SSL_R_EXTRA_DATA_IN_MESSAGE
);
1155 EVP_PKEY_free(pkey
);
1158 ssl3_send_alert(s
,SSL3_AL_FATAL
,al
);
1160 EVP_PKEY_free(pkey
);
1161 #ifndef OPENSSL_NO_RSA
1165 #ifndef OPENSSL_NO_DH
1172 static int ssl3_get_certificate_request(SSL
*s
)
1175 unsigned long n
,nc
,l
;
1176 unsigned int llen
,ctype_num
,i
;
1178 unsigned char *p
,*d
,*q
;
1179 STACK_OF(X509_NAME
) *ca_sk
=NULL
;
1181 n
=ssl3_get_message(s
,
1182 SSL3_ST_CR_CERT_REQ_A
,
1183 SSL3_ST_CR_CERT_REQ_B
,
1185 #if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN32)
1186 1024*30, /* 30k max cert list :-) */
1188 1024*100, /* 100k max cert list :-) */
1192 if (!ok
) return((int)n
);
1194 s
->s3
->tmp
.cert_req
=0;
1196 if (s
->s3
->tmp
.message_type
== SSL3_MT_SERVER_DONE
)
1198 s
->s3
->tmp
.reuse_message
=1;
1202 if (s
->s3
->tmp
.message_type
!= SSL3_MT_CERTIFICATE_REQUEST
)
1204 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
1205 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_WRONG_MESSAGE_TYPE
);
1209 /* TLS does not like anon-DH with client cert */
1210 if (s
->version
> SSL3_VERSION
)
1212 l
=s
->s3
->tmp
.new_cipher
->algorithms
;
1215 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_UNEXPECTED_MESSAGE
);
1216 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER
);
1221 d
=p
=(unsigned char *)s
->init_buf
->data
;
1223 if ((ca_sk
=sk_X509_NAME_new(ca_dn_cmp
)) == NULL
)
1225 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
1229 /* get the certificate types */
1231 if (ctype_num
> SSL3_CT_NUMBER
)
1232 ctype_num
=SSL3_CT_NUMBER
;
1233 for (i
=0; i
<ctype_num
; i
++)
1234 s
->s3
->tmp
.ctype
[i
]= p
[i
];
1237 /* get the CA RDNs */
1242 out
=fopen("/tmp/vsign.der","w");
1243 fwrite(p
,1,llen
,out
);
1248 if ((llen
+ctype_num
+2+1) != n
)
1250 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1251 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_LENGTH_MISMATCH
);
1255 for (nc
=0; nc
<llen
; )
1258 if ((l
+nc
+2) > llen
)
1260 if ((s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
))
1261 goto cont
; /* netscape bugs */
1262 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1263 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_TOO_LONG
);
1269 if ((xn
=d2i_X509_NAME(NULL
,&q
,l
)) == NULL
)
1271 /* If netscape tolerance is on, ignore errors */
1272 if (s
->options
& SSL_OP_NETSCAPE_CA_DN_BUG
)
1276 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1277 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_ASN1_LIB
);
1284 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1285 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,SSL_R_CA_DN_LENGTH_MISMATCH
);
1288 if (!sk_X509_NAME_push(ca_sk
,xn
))
1290 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST
,ERR_R_MALLOC_FAILURE
);
1304 /* we should setup a certificate to return.... */
1305 s
->s3
->tmp
.cert_req
=1;
1306 s
->s3
->tmp
.ctype_num
=ctype_num
;
1307 if (s
->s3
->tmp
.ca_names
!= NULL
)
1308 sk_X509_NAME_pop_free(s
->s3
->tmp
.ca_names
,X509_NAME_free
);
1309 s
->s3
->tmp
.ca_names
=ca_sk
;
1314 if (ca_sk
!= NULL
) sk_X509_NAME_pop_free(ca_sk
,X509_NAME_free
);
1318 static int ca_dn_cmp(const X509_NAME
* const *a
, const X509_NAME
* const *b
)
1320 return(X509_NAME_cmp(*a
,*b
));
1323 static int ssl3_get_server_done(SSL
*s
)
1328 n
=ssl3_get_message(s
,
1329 SSL3_ST_CR_SRVR_DONE_A
,
1330 SSL3_ST_CR_SRVR_DONE_B
,
1331 SSL3_MT_SERVER_DONE
,
1332 30, /* should be very small, like 0 :-) */
1335 if (!ok
) return((int)n
);
1338 /* should contain no data */
1339 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_DECODE_ERROR
);
1340 SSLerr(SSL_F_SSL3_GET_SERVER_DONE
,SSL_R_LENGTH_MISMATCH
);
1346 static int ssl3_send_client_key_exchange(SSL
*s
)
1348 unsigned char *p
,*d
;
1351 #ifndef OPENSSL_NO_RSA
1353 EVP_PKEY
*pkey
=NULL
;
1355 #ifndef OPENSSL_NO_KRB5
1357 #endif /* OPENSSL_NO_KRB5 */
1359 if (s
->state
== SSL3_ST_CW_KEY_EXCH_A
)
1361 d
=(unsigned char *)s
->init_buf
->data
;
1364 l
=s
->s3
->tmp
.new_cipher
->algorithms
;
1366 /* Fool emacs indentation */
1368 #ifndef OPENSSL_NO_RSA
1369 else if (l
& SSL_kRSA
)
1372 unsigned char tmp_buf
[SSL_MAX_MASTER_KEY_LENGTH
];
1374 if (s
->session
->sess_cert
->peer_rsa_tmp
!= NULL
)
1375 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
1378 pkey
=X509_get_pubkey(s
->session
->sess_cert
->peer_pkeys
[SSL_PKEY_RSA_ENC
].x509
);
1379 if ((pkey
== NULL
) ||
1380 (pkey
->type
!= EVP_PKEY_RSA
) ||
1381 (pkey
->pkey
.rsa
== NULL
))
1383 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_INTERNAL_ERROR
);
1387 EVP_PKEY_free(pkey
);
1390 tmp_buf
[0]=s
->client_version
>>8;
1391 tmp_buf
[1]=s
->client_version
&0xff;
1392 if (RAND_bytes(&(tmp_buf
[2]),SSL_MAX_MASTER_KEY_LENGTH
-2) <= 0)
1395 s
->session
->master_key_length
=SSL_MAX_MASTER_KEY_LENGTH
;
1398 /* Fix buf for TLS and beyond */
1399 if (s
->version
> SSL3_VERSION
)
1401 n
=RSA_public_encrypt(SSL_MAX_MASTER_KEY_LENGTH
,
1402 tmp_buf
,p
,rsa
,RSA_PKCS1_PADDING
);
1404 if (s
->options
& SSL_OP_PKCS1_CHECK_1
) p
[1]++;
1405 if (s
->options
& SSL_OP_PKCS1_CHECK_2
) tmp_buf
[0]=0x70;
1409 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_BAD_RSA_ENCRYPT
);
1413 /* Fix buf for TLS and beyond */
1414 if (s
->version
> SSL3_VERSION
)
1420 s
->session
->master_key_length
=
1421 s
->method
->ssl3_enc
->generate_master_secret(s
,
1422 s
->session
->master_key
,
1423 tmp_buf
,SSL_MAX_MASTER_KEY_LENGTH
);
1424 memset(tmp_buf
,0,SSL_MAX_MASTER_KEY_LENGTH
);
1427 #ifndef OPENSSL_NO_KRB5
1428 else if (l
& SSL_kKRB5
)
1430 krb5_error_code krb5rc
;
1431 KSSL_CTX
*kssl_ctx
= s
->kssl_ctx
;
1432 krb5_data krb5_ap_req
;
1435 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1437 #endif /* KSSL_DEBUG */
1440 ** Tried to send random tmp_buf[] as PMS in Kerberos ticket
1441 ** by passing krb5_mk_req_extended(ctx,authctx,opts, tmp_buf, ...)
1442 ** but: I can't retrieve the PMS on the other side! There is
1443 ** some indication in the krb5 source that this is only used
1444 ** to generate a checksum. OTOH, the Tung book shows data
1445 ** ("GET widget01.txt") being passed in krb5_mk_req_extended()
1446 ** by way of krb5_sendauth(). I don't get it.
1447 ** Until Kerberos goes 3DES, the big PMS secret would only be
1448 ** encrypted in 1-DES anyway. So losing the PMS shouldn't be
1451 krb5rc
= kssl_cget_tkt(kssl_ctx
, &krb5_ap_req
,
1455 printf("kssl_cget_tkt rtn %d\n", krb5rc
);
1456 kssl_ctx_show(kssl_ctx
);
1457 if (krb5rc
&& kssl_err
.text
)
1458 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err
.text
);
1460 #endif /* KSSL_DEBUG */
1464 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_HANDSHAKE_FAILURE
);
1465 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
, kssl_err
.reason
);
1469 /* Send ticket (copy to *p, set n = length)
1471 n
= krb5_ap_req
.length
;
1472 memcpy(p
, krb5_ap_req
.data
, krb5_ap_req
.length
);
1473 if (krb5_ap_req
.data
)
1474 kssl_krb5_free_data_contents(NULL
,&krb5_ap_req
);
1476 /* 19991013 VRS - 3DES is kind of bogus here,
1477 ** at least until Kerberos supports 3DES. The only
1478 ** real secret is the 8-byte Kerberos session key;
1479 ** the other key material ((s->) client_random, server_random)
1480 ** could be sniffed. Mixing in these nonces should help
1481 ** protect against replay attacks, however.
1483 ** Alternate code for Kerberos Purists:
1485 ** memcpy(s->session->master_key, kssl_ctx->key, kssl_ctx->length);
1486 ** s->session->master_key_length = kssl_ctx->length;
1488 s
->session
->master_key_length
=
1489 s
->method
->ssl3_enc
->generate_master_secret(s
,
1490 s
->session
->master_key
, kssl_ctx
->key
,kssl_ctx
->length
);
1493 #ifndef OPENSSL_NO_DH
1494 else if (l
& (SSL_kEDH
|SSL_kDHr
|SSL_kDHd
))
1496 DH
*dh_srvr
,*dh_clnt
;
1498 if (s
->session
->sess_cert
->peer_dh_tmp
!= NULL
)
1499 dh_srvr
=s
->session
->sess_cert
->peer_dh_tmp
;
1502 /* we get them from the cert */
1503 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_HANDSHAKE_FAILURE
);
1504 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS
);
1508 /* generate a new random key */
1509 if ((dh_clnt
=DHparams_dup(dh_srvr
)) == NULL
)
1511 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1514 if (!DH_generate_key(dh_clnt
))
1516 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1520 /* use the 'p' output buffer for the DH key, but
1521 * make sure to clear it out afterwards */
1523 n
=DH_compute_key(p
,dh_srvr
->pub_key
,dh_clnt
);
1527 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,ERR_R_DH_LIB
);
1531 /* generate master key from the result */
1532 s
->session
->master_key_length
=
1533 s
->method
->ssl3_enc
->generate_master_secret(s
,
1534 s
->session
->master_key
,p
,n
);
1538 /* send off the data */
1539 n
=BN_num_bytes(dh_clnt
->pub_key
);
1541 BN_bn2bin(dh_clnt
->pub_key
,p
);
1546 /* perhaps clean things up a bit EAY EAY EAY EAY*/
1551 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_HANDSHAKE_FAILURE
);
1552 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE
,SSL_R_INTERNAL_ERROR
);
1556 *(d
++)=SSL3_MT_CLIENT_KEY_EXCHANGE
;
1559 s
->state
=SSL3_ST_CW_KEY_EXCH_B
;
1560 /* number of bytes to write */
1565 /* SSL3_ST_CW_KEY_EXCH_B */
1566 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
1571 static int ssl3_send_client_verify(SSL
*s
)
1573 unsigned char *p
,*d
;
1574 unsigned char data
[MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
];
1576 #ifndef OPENSSL_NO_RSA
1580 #ifndef OPENSSL_NO_DSA
1584 if (s
->state
== SSL3_ST_CW_CERT_VRFY_A
)
1586 d
=(unsigned char *)s
->init_buf
->data
;
1588 pkey
=s
->cert
->key
->privatekey
;
1590 s
->method
->ssl3_enc
->cert_verify_mac(s
,&(s
->s3
->finish_dgst2
),
1591 &(data
[MD5_DIGEST_LENGTH
]));
1593 #ifndef OPENSSL_NO_RSA
1594 if (pkey
->type
== EVP_PKEY_RSA
)
1596 s
->method
->ssl3_enc
->cert_verify_mac(s
,
1597 &(s
->s3
->finish_dgst1
),&(data
[0]));
1598 if (RSA_sign(NID_md5_sha1
, data
,
1599 MD5_DIGEST_LENGTH
+SHA_DIGEST_LENGTH
,
1600 &(p
[2]), &u
, pkey
->pkey
.rsa
) <= 0 )
1602 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_RSA_LIB
);
1610 #ifndef OPENSSL_NO_DSA
1611 if (pkey
->type
== EVP_PKEY_DSA
)
1613 if (!DSA_sign(pkey
->save_type
,
1614 &(data
[MD5_DIGEST_LENGTH
]),
1615 SHA_DIGEST_LENGTH
,&(p
[2]),
1616 (unsigned int *)&j
,pkey
->pkey
.dsa
))
1618 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,ERR_R_DSA_LIB
);
1627 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY
,SSL_R_INTERNAL_ERROR
);
1630 *(d
++)=SSL3_MT_CERTIFICATE_VERIFY
;
1633 s
->init_num
=(int)n
+4;
1636 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
1641 static int ssl3_send_client_certificate(SSL
*s
)
1644 EVP_PKEY
*pkey
=NULL
;
1648 if (s
->state
== SSL3_ST_CW_CERT_A
)
1650 if ((s
->cert
== NULL
) ||
1651 (s
->cert
->key
->x509
== NULL
) ||
1652 (s
->cert
->key
->privatekey
== NULL
))
1653 s
->state
=SSL3_ST_CW_CERT_B
;
1655 s
->state
=SSL3_ST_CW_CERT_C
;
1658 /* We need to get a client cert */
1659 if (s
->state
== SSL3_ST_CW_CERT_B
)
1661 /* If we get an error, we need to
1662 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
1663 * We then get retied later */
1665 if (s
->ctx
->client_cert_cb
!= NULL
)
1666 i
=s
->ctx
->client_cert_cb(s
,&(x509
),&(pkey
));
1669 s
->rwstate
=SSL_X509_LOOKUP
;
1672 s
->rwstate
=SSL_NOTHING
;
1673 if ((i
== 1) && (pkey
!= NULL
) && (x509
!= NULL
))
1675 s
->state
=SSL3_ST_CW_CERT_B
;
1676 if ( !SSL_use_certificate(s
,x509
) ||
1677 !SSL_use_PrivateKey(s
,pkey
))
1683 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE
,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK
);
1686 if (x509
!= NULL
) X509_free(x509
);
1687 if (pkey
!= NULL
) EVP_PKEY_free(pkey
);
1690 if (s
->version
== SSL3_VERSION
)
1692 s
->s3
->tmp
.cert_req
=0;
1693 ssl3_send_alert(s
,SSL3_AL_WARNING
,SSL_AD_NO_CERTIFICATE
);
1698 s
->s3
->tmp
.cert_req
=2;
1702 /* Ok, we have a cert */
1703 s
->state
=SSL3_ST_CW_CERT_C
;
1706 if (s
->state
== SSL3_ST_CW_CERT_C
)
1708 s
->state
=SSL3_ST_CW_CERT_D
;
1709 l
=ssl3_output_cert_chain(s
,
1710 (s
->s3
->tmp
.cert_req
== 2)?NULL
:s
->cert
->key
->x509
);
1714 /* SSL3_ST_CW_CERT_D */
1715 return(ssl3_do_write(s
,SSL3_RT_HANDSHAKE
));
1718 #define has_bits(i,m) (((i)&(m)) == (m))
1720 static int ssl3_check_cert_and_algorithm(SSL
*s
)
1724 EVP_PKEY
*pkey
=NULL
;
1726 #ifndef OPENSSL_NO_RSA
1729 #ifndef OPENSSL_NO_DH
1733 sc
=s
->session
->sess_cert
;
1737 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_INTERNAL_ERROR
);
1741 algs
=s
->s3
->tmp
.new_cipher
->algorithms
;
1743 /* we don't have a certificate */
1744 if (algs
& (SSL_aDH
|SSL_aNULL
|SSL_aKRB5
))
1747 #ifndef OPENSSL_NO_RSA
1748 rsa
=s
->session
->sess_cert
->peer_rsa_tmp
;
1750 #ifndef OPENSSL_NO_DH
1751 dh
=s
->session
->sess_cert
->peer_dh_tmp
;
1754 /* This is the passed certificate */
1756 idx
=sc
->peer_cert_type
;
1757 pkey
=X509_get_pubkey(sc
->peer_pkeys
[idx
].x509
);
1758 i
=X509_certificate_type(sc
->peer_pkeys
[idx
].x509
,pkey
);
1759 EVP_PKEY_free(pkey
);
1762 /* Check that we have a certificate if we require one */
1763 if ((algs
& SSL_aRSA
) && !has_bits(i
,EVP_PK_RSA
|EVP_PKT_SIGN
))
1765 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_SIGNING_CERT
);
1768 #ifndef OPENSSL_NO_DSA
1769 else if ((algs
& SSL_aDSS
) && !has_bits(i
,EVP_PK_DSA
|EVP_PKT_SIGN
))
1771 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DSA_SIGNING_CERT
);
1775 #ifndef OPENSSL_NO_RSA
1776 if ((algs
& SSL_kRSA
) &&
1777 !(has_bits(i
,EVP_PK_RSA
|EVP_PKT_ENC
) || (rsa
!= NULL
)))
1779 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_RSA_ENCRYPTING_CERT
);
1783 #ifndef OPENSSL_NO_DH
1784 if ((algs
& SSL_kEDH
) &&
1785 !(has_bits(i
,EVP_PK_DH
|EVP_PKT_EXCH
) || (dh
!= NULL
)))
1787 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_KEY
);
1790 else if ((algs
& SSL_kDHr
) && !has_bits(i
,EVP_PK_DH
|EVP_PKS_RSA
))
1792 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_RSA_CERT
);
1795 #ifndef OPENSSL_NO_DSA
1796 else if ((algs
& SSL_kDHd
) && !has_bits(i
,EVP_PK_DH
|EVP_PKS_DSA
))
1798 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_DH_DSA_CERT
);
1804 if (SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
) && !has_bits(i
,EVP_PKT_EXP
))
1806 #ifndef OPENSSL_NO_RSA
1807 if (algs
& SSL_kRSA
)
1810 || RSA_size(rsa
) > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
1812 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_RSA_KEY
);
1818 #ifndef OPENSSL_NO_DH
1819 if (algs
& (SSL_kEDH
|SSL_kDHr
|SSL_kDHd
))
1822 || DH_size(dh
) > SSL_C_EXPORT_PKEYLENGTH(s
->s3
->tmp
.new_cipher
))
1824 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_MISSING_EXPORT_TMP_DH_KEY
);
1831 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM
,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE
);
1837 ssl3_send_alert(s
,SSL3_AL_FATAL
,SSL_AD_HANDSHAKE_FAILURE
);