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.]
67 static SSL_METHOD
*ssl2_get_server_method(int ver
);
68 static int get_client_master_key(SSL
*s
);
69 static int get_client_hello(SSL
*s
);
70 static int server_hello(SSL
*s
);
71 static int get_client_finished(SSL
*s
);
72 static int server_verify(SSL
*s
);
73 static int server_finish(SSL
*s
);
74 static int request_certificate(SSL
*s
);
75 static int ssl_rsa_private_decrypt(CERT
*c
, int len
, unsigned char *from
,
76 unsigned char *to
,int padding
);
78 static SSL_METHOD
*ssl2_get_server_method();
79 static int get_client_master_key();
80 static int get_client_hello();
81 static int server_hello();
82 static int get_client_finished();
83 static int server_verify();
84 static int server_finish();
85 static int request_certificate();
86 static int ssl_rsa_private_decrypt();
91 static SSL_METHOD
*ssl2_get_server_method(ver
)
94 if (ver
== SSL2_VERSION
)
95 return(SSLv2_server_method());
100 SSL_METHOD
*SSLv2_server_method()
103 static SSL_METHOD SSLv2_server_data
;
108 memcpy((char *)&SSLv2_server_data
,(char *)sslv2_base_method(),
110 SSLv2_server_data
.ssl_accept
=ssl2_accept
;
111 SSLv2_server_data
.get_ssl_method
=ssl2_get_server_method
;
113 return(&SSLv2_server_data
);
119 unsigned long l
=time(NULL
);
126 RAND_seed(&l
,sizeof(l
));
130 if (s
->info_callback
!= NULL
)
132 else if (s
->ctx
->info_callback
!= NULL
)
133 cb
=s
->ctx
->info_callback
;
135 /* init things to blank */
136 if (!SSL_in_init(s
) || SSL_in_before(s
)) SSL_clear(s
);
139 if (((s
->session
== NULL
) || (s
->session
->cert
== NULL
)) &&
142 SSLerr(SSL_F_SSL2_ACCEPT
,SSL_R_NO_CERTIFICATE_SET
);
155 case SSL_ST_BEFORE
|SSL_ST_ACCEPT
:
156 case SSL_ST_OK
|SSL_ST_ACCEPT
:
158 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_START
,1);
160 s
->version
=SSL2_VERSION
;
161 s
->type
=SSL_ST_ACCEPT
;
164 if ((buf
== NULL
) && ((buf
=BUF_MEM_new()) == NULL
))
165 { ret
= -1; goto end
; }
166 if (!BUF_MEM_grow(buf
,(int)
167 SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER
))
168 { ret
= -1; goto end
; }
171 s
->ctx
->sess_accept
++;
172 s
->handshake_func
=ssl2_accept
;
173 s
->state
=SSL2_ST_GET_CLIENT_HELLO_A
;
176 case SSL2_ST_GET_CLIENT_HELLO_A
:
177 case SSL2_ST_GET_CLIENT_HELLO_B
:
178 case SSL2_ST_GET_CLIENT_HELLO_C
:
180 ret
=get_client_hello(s
);
181 if (ret
<= 0) goto end
;
183 s
->state
=SSL2_ST_SEND_SERVER_HELLO_A
;
186 case SSL2_ST_SEND_SERVER_HELLO_A
:
187 case SSL2_ST_SEND_SERVER_HELLO_B
:
189 if (ret
<= 0) goto end
;
193 s
->state
=SSL2_ST_GET_CLIENT_MASTER_KEY_A
;
198 s
->state
=SSL2_ST_SERVER_START_ENCRYPTION
;
201 case SSL2_ST_GET_CLIENT_MASTER_KEY_A
:
202 case SSL2_ST_GET_CLIENT_MASTER_KEY_B
:
203 ret
=get_client_master_key(s
);
204 if (ret
<= 0) goto end
;
206 s
->state
=SSL2_ST_SERVER_START_ENCRYPTION
;
209 case SSL2_ST_SERVER_START_ENCRYPTION
:
210 /* Ok we how have sent all the stuff needed to
211 * start encrypting, the next packet back will
213 if (!ssl2_enc_init(s
,0))
214 { ret
= -1; goto end
; }
216 s
->state
=SSL2_ST_SEND_SERVER_VERIFY_A
;
219 case SSL2_ST_SEND_SERVER_VERIFY_A
:
220 case SSL2_ST_SEND_SERVER_VERIFY_B
:
221 ret
=server_verify(s
);
222 if (ret
<= 0) goto end
;
226 /* If we are in here, we have been
227 * buffering the output, so we need to
228 * flush it and remove buffering from
230 s
->state
=SSL2_ST_SEND_SERVER_VERIFY_C
;
235 s
->state
=SSL2_ST_GET_CLIENT_FINISHED_A
;
239 case SSL2_ST_SEND_SERVER_VERIFY_C
:
240 /* get the number of bytes to write */
241 num1
=BIO_ctrl(s
->wbio
,BIO_CTRL_INFO
,0,NULL
);
244 s
->rwstate
=SSL_WRITING
;
245 num1
=BIO_flush(s
->wbio
);
246 if (num1
<= 0) { ret
= -1; goto end
; }
247 s
->rwstate
=SSL_NOTHING
;
250 /* flushed and now remove buffering */
251 s
->wbio
=BIO_pop(s
->wbio
);
253 s
->state
=SSL2_ST_GET_CLIENT_FINISHED_A
;
256 case SSL2_ST_GET_CLIENT_FINISHED_A
:
257 case SSL2_ST_GET_CLIENT_FINISHED_B
:
258 ret
=get_client_finished(s
);
262 s
->state
=SSL2_ST_SEND_REQUEST_CERTIFICATE_A
;
265 case SSL2_ST_SEND_REQUEST_CERTIFICATE_A
:
266 case SSL2_ST_SEND_REQUEST_CERTIFICATE_B
:
267 case SSL2_ST_SEND_REQUEST_CERTIFICATE_C
:
268 case SSL2_ST_SEND_REQUEST_CERTIFICATE_D
:
269 /* don't do a 'request certificate' if we
270 * don't want to, or we already have one, and
271 * we only want to do it once. */
272 if (!(s
->verify_mode
& SSL_VERIFY_PEER
) ||
273 ((s
->session
->peer
!= NULL
) &&
274 (s
->verify_mode
& SSL_VERIFY_CLIENT_ONCE
)))
276 s
->state
=SSL2_ST_SEND_SERVER_FINISHED_A
;
281 ret
=request_certificate(s
);
282 if (ret
<= 0) goto end
;
284 s
->state
=SSL2_ST_SEND_SERVER_FINISHED_A
;
288 case SSL2_ST_SEND_SERVER_FINISHED_A
:
289 case SSL2_ST_SEND_SERVER_FINISHED_B
:
290 ret
=server_finish(s
);
291 if (ret
<= 0) goto end
;
297 BUF_MEM_free(s
->init_buf
);
300 /* ERR_clear_error();*/
302 ssl_update_cache(s
,SSL_SESS_CACHE_SERVER
);
304 s
->ctx
->sess_accept_good
++;
308 if (cb
!= NULL
) cb(s
,SSL_CB_HANDSHAKE_DONE
,1);
314 SSLerr(SSL_F_SSL2_ACCEPT
,SSL_R_UNKNOWN_STATE
);
320 if ((cb
!= NULL
) && (s
->state
!= state
))
324 cb(s
,SSL_CB_ACCEPT_LOOP
,1);
331 cb(s
,SSL_CB_ACCEPT_EXIT
,ret
);
335 static int get_client_master_key(s
)
338 int export
,i
,n
,keya
,ek
;
347 p
=(unsigned char *)s
->init_buf
->data
;
348 if (s
->state
== SSL2_ST_GET_CLIENT_MASTER_KEY_A
)
350 i
=ssl2_read(s
,(char *)&(p
[s
->init_num
]),10-s
->init_num
);
352 if (i
< (10-s
->init_num
))
353 return(ssl2_part_read(s
,SSL_F_GET_CLIENT_MASTER_KEY
,i
));
354 if (*(p
++) != SSL2_MT_CLIENT_MASTER_KEY
)
356 if (p
[-1] != SSL2_MT_ERROR
)
358 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
359 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY
,SSL_R_READ_WRONG_PACKET_TYPE
);
362 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY
,
367 cp
=ssl2_get_cipher_by_char(p
);
370 ssl2_return_error(s
,SSL2_PE_NO_CIPHER
);
371 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY
,
372 SSL_R_NO_CIPHER_MATCH
);
375 s
->session
->cipher
= cp
;
378 n2s(p
,i
); s
->s2
->tmp
.clear
=i
;
379 n2s(p
,i
); s
->s2
->tmp
.enc
=i
;
380 n2s(p
,i
); s
->session
->key_arg_length
=i
;
381 s
->state
=SSL2_ST_GET_CLIENT_MASTER_KEY_B
;
385 /* SSL2_ST_GET_CLIENT_MASTER_KEY_B */
386 p
=(unsigned char *)s
->init_buf
->data
;
387 keya
=s
->session
->key_arg_length
;
388 n
=s
->s2
->tmp
.clear
+s
->s2
->tmp
.enc
+keya
- s
->init_num
;
389 i
=ssl2_read(s
,(char *)&(p
[s
->init_num
]),n
);
390 if (i
!= n
) return(ssl2_part_read(s
,SSL_F_GET_CLIENT_MASTER_KEY
,i
));
392 memcpy(s
->session
->key_arg
,&(p
[s
->s2
->tmp
.clear
+s
->s2
->tmp
.enc
]),
395 if (s
->session
->cert
->pkeys
[SSL_PKEY_RSA_ENC
].privatekey
== NULL
)
397 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
398 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY
,SSL_R_NO_PRIVATEKEY
);
401 i
=ssl_rsa_private_decrypt(s
->cert
,s
->s2
->tmp
.enc
,
402 &(p
[s
->s2
->tmp
.clear
]),&(p
[s
->s2
->tmp
.clear
]),
403 (s
->s2
->ssl2_rollback
)?RSA_SSLV23_PADDING
:RSA_PKCS1_PADDING
);
405 export
=(s
->session
->cipher
->algorithms
& SSL_EXP
)?1:0;
407 if (!ssl_cipher_get_evp(s
->session
->cipher
,&c
,&md
))
409 ssl2_return_error(s
,SSL2_PE_NO_CIPHER
);
410 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY
,SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS
);
414 if (s
->session
->cipher
->algorithm2
& SSL2_CF_8_BYTE_ENC
)
424 /* If a bad decrypt, continue with protocol but with a
425 * dud master secret */
427 ((!export
&& (i
!= EVP_CIPHER_key_length(c
)))
428 || ( export
&& ((i
!= ek
) || (s
->s2
->tmp
.clear
+i
!=
429 EVP_CIPHER_key_length(c
))))))
434 i
=EVP_CIPHER_key_length(c
);
441 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY
,SSL_R_BAD_RSA_DECRYPT
);
443 /* incorrect number of key bytes for non export cipher */
444 else if ((!export
&& (i
!= EVP_CIPHER_key_length(c
)))
445 || ( export
&& ((i
!= ek
) || (s
->s2
->tmp
.clear
+i
!=
446 EVP_CIPHER_key_length(c
)))))
449 SSLerr(SSL_F_GET_CLIENT_MASTER_KEY
,SSL_R_WRONG_NUMBER_OF_KEY_BITS
);
453 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
458 if (export
) i
+=s
->s2
->tmp
.clear
;
459 s
->session
->master_key_length
=i
;
460 memcpy(s
->session
->master_key
,p
,(unsigned int)i
);
464 static int get_client_hello(s
)
469 STACK
*cs
; /* a stack of SSL_CIPHERS */
470 STACK
*cl
; /* the ones we want to use */
473 /* This is a bit of a hack to check for the correct packet
474 * type the first time round. */
475 if (s
->state
== SSL2_ST_GET_CLIENT_HELLO_A
)
478 s
->state
=SSL2_ST_GET_CLIENT_HELLO_B
;
481 p
=(unsigned char *)s
->init_buf
->data
;
482 if (s
->state
== SSL2_ST_GET_CLIENT_HELLO_B
)
484 i
=ssl2_read(s
,(char *)&(p
[s
->init_num
]),9-s
->init_num
);
485 if (i
< (9-s
->init_num
))
486 return(ssl2_part_read(s
,SSL_F_GET_CLIENT_HELLO
,i
));
488 if (*(p
++) != SSL2_MT_CLIENT_HELLO
)
490 if (p
[-1] != SSL2_MT_ERROR
)
492 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
493 SSLerr(SSL_F_GET_CLIENT_HELLO
,SSL_R_READ_WRONG_PACKET_TYPE
);
496 SSLerr(SSL_F_GET_CLIENT_HELLO
,SSL_R_PEER_ERROR
);
500 if (i
< s
->version
) s
->version
=i
;
501 n2s(p
,i
); s
->s2
->tmp
.cipher_spec_length
=i
;
502 n2s(p
,i
); s
->s2
->tmp
.session_id_length
=i
;
503 n2s(p
,i
); s
->s2
->challenge_length
=i
;
504 if ( (i
< SSL2_MIN_CHALLENGE_LENGTH
) ||
505 (i
> SSL2_MAX_CHALLENGE_LENGTH
))
507 SSLerr(SSL_F_GET_CLIENT_HELLO
,SSL_R_INVALID_CHALLENGE_LENGTH
);
510 s
->state
=SSL2_ST_GET_CLIENT_HELLO_C
;
514 /* SSL2_ST_GET_CLIENT_HELLO_C */
515 p
=(unsigned char *)s
->init_buf
->data
;
516 n
=s
->s2
->tmp
.cipher_spec_length
+s
->s2
->challenge_length
+
517 s
->s2
->tmp
.session_id_length
-s
->init_num
;
518 i
=ssl2_read(s
,(char *)&(p
[s
->init_num
]),n
);
519 if (i
!= n
) return(ssl2_part_read(s
,SSL_F_GET_CLIENT_HELLO
,i
));
521 /* get session-id before cipher stuff so we can get out session
522 * structure if it is cached */
524 if ((s
->s2
->tmp
.session_id_length
!= 0) &&
525 (s
->s2
->tmp
.session_id_length
!= SSL2_SSL_SESSION_ID_LENGTH
))
527 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
528 SSLerr(SSL_F_GET_CLIENT_HELLO
,SSL_R_BAD_SSL_SESSION_ID_LENGTH
);
532 if (s
->s2
->tmp
.session_id_length
== 0)
534 if (!ssl_get_new_session(s
,1))
536 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
542 i
=ssl_get_prev_session(s
,&(p
[s
->s2
->tmp
.cipher_spec_length
]),
543 s
->s2
->tmp
.session_id_length
);
545 { /* previous session */
550 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
557 ssl2_return_error(s
,SSL2_PE_NO_CERTIFICATE
);
558 SSLerr(SSL_F_GET_CLIENT_HELLO
,SSL_R_NO_CERTIFICATE_SET
);
562 if (!ssl_get_new_session(s
,1))
564 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
572 cs
=ssl_bytes_to_cipher_list(s
,p
,s
->s2
->tmp
.cipher_spec_length
,
573 &s
->session
->ciphers
);
574 if (cs
== NULL
) goto mem_err
;
576 cl
=ssl_get_ciphers_by_id(s
);
578 for (z
=0; z
<sk_num(cs
); z
++)
580 if (sk_find(cl
,sk_value(cs
,z
)) < 0)
587 /* s->session->ciphers should now have a list of
588 * ciphers that are on both the client and server.
589 * This list is ordered by the order the client sent
593 p
+=s
->s2
->tmp
.cipher_spec_length
;
594 /* done cipher selection */
596 /* session id extracted already */
597 p
+=s
->s2
->tmp
.session_id_length
;
600 memcpy(s
->s2
->challenge
,p
,(unsigned int)s
->s2
->challenge_length
);
603 SSLerr(SSL_F_GET_CLIENT_HELLO
,ERR_R_MALLOC_FAILURE
);
607 static int server_hello(s
)
614 p
=(unsigned char *)s
->init_buf
->data
;
615 if (s
->state
== SSL2_ST_SEND_SERVER_HELLO_A
)
618 *(p
++)=SSL2_MT_SERVER_HELLO
; /* type */
620 *(p
++)=(unsigned char)hit
;
622 { /* else add cert to session */
623 CRYPTO_add(&s
->cert
->references
,1,CRYPTO_LOCK_SSL_CERT
);
624 if (s
->session
->cert
!= NULL
)
625 ssl_cert_free(s
->session
->cert
);
626 s
->session
->cert
=s
->cert
;
628 else /* We have a session id-cache hit, if the
629 * session-id has no certificate listed against
630 * the 'cert' structure, grab the 'old' one
631 * listed against the SSL connection */
633 if (s
->session
->cert
== NULL
)
635 CRYPTO_add(&s
->cert
->references
,1,
636 CRYPTO_LOCK_SSL_CERT
);
637 s
->session
->cert
=s
->cert
;
641 if (s
->session
->cert
== NULL
)
643 ssl2_return_error(s
,SSL2_PE_NO_CERTIFICATE
);
644 SSLerr(SSL_F_SERVER_HELLO
,SSL_R_NO_CERTIFICATE_SPECIFIED
);
650 *(p
++)=0; /* no certificate type */
651 s2n(s
->version
,p
); /* version */
652 s2n(0,p
); /* cert len */
653 s2n(0,p
); /* ciphers len */
658 /* put certificate type */
659 *(p
++)=SSL2_CT_X509_CERTIFICATE
;
660 s2n(s
->version
,p
); /* version */
661 n
=i2d_X509(s
->cert
->pkeys
[SSL_PKEY_RSA_ENC
].x509
,NULL
);
662 s2n(n
,p
); /* certificate length */
663 i2d_X509(s
->cert
->pkeys
[SSL_PKEY_RSA_ENC
].x509
,&d
);
666 /* lets send out the ciphers we like in the
668 sk
= s
->session
->ciphers
;
669 n
=ssl_cipher_list_to_bytes(s
,s
->session
->ciphers
,d
);
671 s2n(n
,p
); /* add cipher length */
674 /* make and send conn_id */
675 s2n(SSL2_CONNECTION_ID_LENGTH
,p
); /* add conn_id length */
676 s
->s2
->conn_id_length
=SSL2_CONNECTION_ID_LENGTH
;
677 RAND_bytes(s
->s2
->conn_id
,(int)s
->s2
->conn_id_length
);
678 memcpy(d
,s
->s2
->conn_id
,SSL2_CONNECTION_ID_LENGTH
);
679 d
+=SSL2_CONNECTION_ID_LENGTH
;
681 s
->state
=SSL2_ST_SEND_SERVER_HELLO_B
;
682 s
->init_num
=d
-(unsigned char *)s
->init_buf
->data
;
685 /* SSL2_ST_SEND_SERVER_HELLO_B */
686 /* If we are using TCP/IP, the performace is bad if we do 2
687 * writes without a read between them. This occurs when
688 * Session-id reuse is used, so I will put in a buffering module
692 if (!ssl_init_wbio_buffer(s
,1)) return(-1);
695 return(ssl2_do_write(s
));
698 static int get_client_finished(s
)
704 p
=(unsigned char *)s
->init_buf
->data
;
705 if (s
->state
== SSL2_ST_GET_CLIENT_FINISHED_A
)
707 i
=ssl2_read(s
,(char *)&(p
[s
->init_num
]),1-s
->init_num
);
708 if (i
< 1-s
->init_num
)
709 return(ssl2_part_read(s
,SSL_F_GET_CLIENT_FINISHED
,i
));
711 if (*p
!= SSL2_MT_CLIENT_FINISHED
)
713 if (*p
!= SSL2_MT_ERROR
)
715 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
716 SSLerr(SSL_F_GET_CLIENT_FINISHED
,SSL_R_READ_WRONG_PACKET_TYPE
);
719 SSLerr(SSL_F_GET_CLIENT_FINISHED
,SSL_R_PEER_ERROR
);
723 s
->state
=SSL2_ST_GET_CLIENT_FINISHED_B
;
726 /* SSL2_ST_GET_CLIENT_FINISHED_B */
727 i
=ssl2_read(s
,(char *)&(p
[s
->init_num
]),s
->s2
->conn_id_length
-s
->init_num
);
728 if (i
< (int)s
->s2
->conn_id_length
-s
->init_num
)
730 return(ssl2_part_read(s
,SSL_F_GET_CLIENT_FINISHED
,i
));
732 if (memcmp(p
,s
->s2
->conn_id
,(unsigned int)s
->s2
->conn_id_length
) != 0)
734 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
735 SSLerr(SSL_F_GET_CLIENT_FINISHED
,SSL_R_CONNECTION_ID_IS_DIFFERENT
);
741 static int server_verify(s
)
746 if (s
->state
== SSL2_ST_SEND_SERVER_VERIFY_A
)
748 p
=(unsigned char *)s
->init_buf
->data
;
749 *(p
++)=SSL2_MT_SERVER_VERIFY
;
750 memcpy(p
,s
->s2
->challenge
,(unsigned int)s
->s2
->challenge_length
);
751 /* p+=s->s2->challenge_length; */
753 s
->state
=SSL2_ST_SEND_SERVER_VERIFY_B
;
754 s
->init_num
=s
->s2
->challenge_length
+1;
757 return(ssl2_do_write(s
));
760 static int server_finish(s
)
765 if (s
->state
== SSL2_ST_SEND_SERVER_FINISHED_A
)
767 p
=(unsigned char *)s
->init_buf
->data
;
768 *(p
++)=SSL2_MT_SERVER_FINISHED
;
770 memcpy(p
,s
->session
->session_id
,
771 (unsigned int)s
->session
->session_id_length
);
772 /* p+=s->session->session_id_length; */
774 s
->state
=SSL2_ST_SEND_SERVER_FINISHED_B
;
775 s
->init_num
=s
->session
->session_id_length
+1;
779 /* SSL2_ST_SEND_SERVER_FINISHED_B */
780 return(ssl2_do_write(s
));
783 /* send the request and check the response */
784 static int request_certificate(s
)
787 unsigned char *p
,*p2
,*buf2
;
789 int i
,j
,ctype
,ret
= -1;
794 if (s
->state
== SSL2_ST_SEND_REQUEST_CERTIFICATE_A
)
796 p
=(unsigned char *)s
->init_buf
->data
;
797 *(p
++)=SSL2_MT_REQUEST_CERTIFICATE
;
798 *(p
++)=SSL2_AT_MD5_WITH_RSA_ENCRYPTION
;
799 RAND_bytes(ccd
,SSL2_MIN_CERT_CHALLENGE_LENGTH
);
800 memcpy(p
,ccd
,SSL2_MIN_CERT_CHALLENGE_LENGTH
);
802 s
->state
=SSL2_ST_SEND_REQUEST_CERTIFICATE_B
;
803 s
->init_num
=SSL2_MIN_CERT_CHALLENGE_LENGTH
+2;
807 if (s
->state
== SSL2_ST_SEND_REQUEST_CERTIFICATE_B
)
817 s
->state
=SSL2_ST_SEND_REQUEST_CERTIFICATE_C
;
820 if (s
->state
== SSL2_ST_SEND_REQUEST_CERTIFICATE_C
)
822 p
=(unsigned char *)s
->init_buf
->data
;
823 i
=ssl2_read(s
,(char *)&(p
[s
->init_num
]),6-s
->init_num
);
826 ret
=ssl2_part_read(s
,SSL_F_REQUEST_CERTIFICATE
,i
);
830 if ((*p
== SSL2_MT_ERROR
) && (i
>= 3))
833 if (s
->verify_mode
& SSL_VERIFY_FAIL_IF_NO_PEER_CERT
)
835 ssl2_return_error(s
,SSL2_PE_BAD_CERTIFICATE
);
836 SSLerr(SSL_F_REQUEST_CERTIFICATE
,SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE
);
842 if ((*(p
++) != SSL2_MT_CLIENT_CERTIFICATE
) || (i
< 6))
844 ssl2_return_error(s
,SSL2_PE_UNDEFINED_ERROR
);
845 SSLerr(SSL_F_REQUEST_CERTIFICATE
,SSL_R_SHORT_READ
);
848 /* ok we have a response */
849 /* certificate type, there is only one right now. */
851 if (ctype
!= SSL2_AT_MD5_WITH_RSA_ENCRYPTION
)
853 ssl2_return_error(s
,SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE
);
854 SSLerr(SSL_F_REQUEST_CERTIFICATE
,SSL_R_BAD_RESPONSE_ARGUMENT
);
857 n2s(p
,i
); s
->s2
->tmp
.clen
=i
;
858 n2s(p
,i
); s
->s2
->tmp
.rlen
=i
;
859 s
->state
=SSL2_ST_SEND_REQUEST_CERTIFICATE_D
;
863 /* SSL2_ST_SEND_REQUEST_CERTIFICATE_D */
864 p
=(unsigned char *)s
->init_buf
->data
;
865 j
=s
->s2
->tmp
.clen
+s
->s2
->tmp
.rlen
-s
->init_num
;
866 i
=ssl2_read(s
,(char *)&(p
[s
->init_num
]),j
);
869 ret
=ssl2_part_read(s
,SSL_F_REQUEST_CERTIFICATE
,i
);
873 x509
=(X509
*)d2i_X509(NULL
,&p
,(long)s
->s2
->tmp
.clen
);
876 SSLerr(SSL_F_REQUEST_CERTIFICATE
,ERR_R_X509_LIB
);
880 if (((sk
=sk_new_null()) == NULL
) || (!sk_push(sk
,(char *)x509
)))
882 SSLerr(SSL_F_REQUEST_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
886 i
=ssl_verify_cert_chain(s
,sk
);
888 if (i
) /* we like the packet, now check the chksum */
893 EVP_VerifyInit(&ctx
,s
->ctx
->rsa_md5
);
894 EVP_VerifyUpdate(&ctx
,s
->s2
->key_material
,
895 (unsigned int)s
->s2
->key_material_length
);
896 EVP_VerifyUpdate(&ctx
,ccd
,SSL2_MIN_CERT_CHALLENGE_LENGTH
);
898 i
=i2d_X509(s
->session
->cert
->pkeys
[SSL_PKEY_RSA_ENC
].x509
,NULL
);
899 buf2
=(unsigned char *)Malloc((unsigned int)i
);
902 SSLerr(SSL_F_REQUEST_CERTIFICATE
,ERR_R_MALLOC_FAILURE
);
906 i
=i2d_X509(s
->session
->cert
->pkeys
[SSL_PKEY_RSA_ENC
].x509
,&p2
);
907 EVP_VerifyUpdate(&ctx
,buf2
,(unsigned int)i
);
910 pkey
=X509_get_pubkey(x509
);
911 if (pkey
== NULL
) goto end
;
912 i
=EVP_VerifyFinal(&ctx
,p
,s
->s2
->tmp
.rlen
,pkey
);
914 memset(&ctx
,0,sizeof(ctx
));
918 if (s
->session
->peer
!= NULL
)
919 X509_free(s
->session
->peer
);
920 s
->session
->peer
=x509
;
921 CRYPTO_add(&x509
->references
,1,CRYPTO_LOCK_X509
);
927 SSLerr(SSL_F_REQUEST_CERTIFICATE
,SSL_R_BAD_CHECKSUM
);
934 ssl2_return_error(s
,SSL2_PE_BAD_CERTIFICATE
);
942 static int ssl_rsa_private_decrypt(c
, len
, from
, to
,padding
)
952 if ((c
== NULL
) || (c
->pkeys
[SSL_PKEY_RSA_ENC
].privatekey
== NULL
))
954 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT
,SSL_R_NO_PRIVATEKEY
);
957 if (c
->pkeys
[SSL_PKEY_RSA_ENC
].privatekey
->type
!= EVP_PKEY_RSA
)
959 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT
,SSL_R_PUBLIC_KEY_IS_NOT_RSA
);
962 rsa
=c
->pkeys
[SSL_PKEY_RSA_ENC
].privatekey
->pkey
.rsa
;
964 /* we have the public key */
965 i
=RSA_private_decrypt(len
,from
,to
,rsa
,padding
);
967 SSLerr(SSL_F_SSL_RSA_PRIVATE_DECRYPT
,ERR_R_RSA_LIB
);