2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
113 #include "ssl_locl.h"
114 #include "kssl_lcl.h"
115 #include <openssl/buffer.h>
116 #include <openssl/rand.h>
117 #include <openssl/objects.h>
118 #include <openssl/evp.h>
119 #include <openssl/md5.h>
120 #include <openssl/fips.h>
122 static SSL_METHOD *ssl3_get_client_method(int ver);
123 static int ssl3_client_hello(SSL *s);
124 static int ssl3_get_server_hello(SSL *s);
125 static int ssl3_get_certificate_request(SSL *s);
126 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
127 static int ssl3_get_server_done(SSL *s);
128 static int ssl3_send_client_verify(SSL *s);
129 static int ssl3_send_client_certificate(SSL *s);
130 static int ssl3_send_client_key_exchange(SSL *s);
131 static int ssl3_get_key_exchange(SSL *s);
132 static int ssl3_get_server_certificate(SSL *s);
133 static int ssl3_check_cert_and_algorithm(SSL *s);
134 static SSL_METHOD *ssl3_get_client_method(int ver)
136 if (ver == SSL3_VERSION)
137 return(SSLv3_client_method());
142 SSL_METHOD *SSLv3_client_method(void)
145 static SSL_METHOD SSLv3_client_data;
149 CRYPTO_w_lock(CRYPTO_LOCK_SSL_METHOD);
153 memcpy((char *)&SSLv3_client_data,(char *)sslv3_base_method(),
155 SSLv3_client_data.ssl_connect=ssl3_connect;
156 SSLv3_client_data.get_ssl_method=ssl3_get_client_method;
160 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_METHOD);
162 return(&SSLv3_client_data);
165 int ssl3_connect(SSL *s)
168 unsigned long Time=time(NULL),l;
170 void (*cb)(const SSL *ssl,int type,int val)=NULL;
172 int new_state,state,skip=0;;
174 RAND_add(&Time,sizeof(Time),0);
178 if (s->info_callback != NULL)
180 else if (s->ctx->info_callback != NULL)
181 cb=s->ctx->info_callback;
184 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
192 case SSL_ST_RENEGOTIATE:
194 s->state=SSL_ST_CONNECT;
195 s->ctx->stats.sess_connect_renegotiate++;
199 case SSL_ST_BEFORE|SSL_ST_CONNECT:
200 case SSL_ST_OK|SSL_ST_CONNECT:
203 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
205 if ((s->version & 0xff00 ) != 0x0300)
207 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
212 /* s->version=SSL3_VERSION; */
213 s->type=SSL_ST_CONNECT;
215 if (s->init_buf == NULL)
217 if ((buf=BUF_MEM_new()) == NULL)
222 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
231 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
233 /* setup buffing BIO */
234 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
236 /* don't push the buffering BIO quite yet */
238 ssl3_init_finished_mac(s);
240 s->state=SSL3_ST_CW_CLNT_HELLO_A;
241 s->ctx->stats.sess_connect++;
245 case SSL3_ST_CW_CLNT_HELLO_A:
246 case SSL3_ST_CW_CLNT_HELLO_B:
249 ret=ssl3_client_hello(s);
250 if (ret <= 0) goto end;
251 s->state=SSL3_ST_CR_SRVR_HELLO_A;
254 /* turn on buffering for the next lot of output */
255 if (s->bbio != s->wbio)
256 s->wbio=BIO_push(s->bbio,s->wbio);
260 case SSL3_ST_CR_SRVR_HELLO_A:
261 case SSL3_ST_CR_SRVR_HELLO_B:
262 ret=ssl3_get_server_hello(s);
263 if (ret <= 0) goto end;
265 s->state=SSL3_ST_CR_FINISHED_A;
267 s->state=SSL3_ST_CR_CERT_A;
271 case SSL3_ST_CR_CERT_A:
272 case SSL3_ST_CR_CERT_B:
273 /* Check if it is anon DH */
274 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL))
276 ret=ssl3_get_server_certificate(s);
277 if (ret <= 0) goto end;
281 s->state=SSL3_ST_CR_KEY_EXCH_A;
285 case SSL3_ST_CR_KEY_EXCH_A:
286 case SSL3_ST_CR_KEY_EXCH_B:
287 ret=ssl3_get_key_exchange(s);
288 if (ret <= 0) goto end;
289 s->state=SSL3_ST_CR_CERT_REQ_A;
292 /* at this point we check that we have the
293 * required stuff from the server */
294 if (!ssl3_check_cert_and_algorithm(s))
301 case SSL3_ST_CR_CERT_REQ_A:
302 case SSL3_ST_CR_CERT_REQ_B:
303 ret=ssl3_get_certificate_request(s);
304 if (ret <= 0) goto end;
305 s->state=SSL3_ST_CR_SRVR_DONE_A;
309 case SSL3_ST_CR_SRVR_DONE_A:
310 case SSL3_ST_CR_SRVR_DONE_B:
311 ret=ssl3_get_server_done(s);
312 if (ret <= 0) goto end;
313 if (s->s3->tmp.cert_req)
314 s->state=SSL3_ST_CW_CERT_A;
316 s->state=SSL3_ST_CW_KEY_EXCH_A;
321 case SSL3_ST_CW_CERT_A:
322 case SSL3_ST_CW_CERT_B:
323 case SSL3_ST_CW_CERT_C:
324 case SSL3_ST_CW_CERT_D:
325 ret=ssl3_send_client_certificate(s);
326 if (ret <= 0) goto end;
327 s->state=SSL3_ST_CW_KEY_EXCH_A;
331 case SSL3_ST_CW_KEY_EXCH_A:
332 case SSL3_ST_CW_KEY_EXCH_B:
333 ret=ssl3_send_client_key_exchange(s);
334 if (ret <= 0) goto end;
335 l=s->s3->tmp.new_cipher->algorithms;
336 /* EAY EAY EAY need to check for DH fix cert
338 /* For TLS, cert_req is set to 2, so a cert chain
339 * of nothing is sent, but no verify packet is sent */
340 if (s->s3->tmp.cert_req == 1)
342 s->state=SSL3_ST_CW_CERT_VRFY_A;
346 s->state=SSL3_ST_CW_CHANGE_A;
347 s->s3->change_cipher_spec=0;
353 case SSL3_ST_CW_CERT_VRFY_A:
354 case SSL3_ST_CW_CERT_VRFY_B:
355 ret=ssl3_send_client_verify(s);
356 if (ret <= 0) goto end;
357 s->state=SSL3_ST_CW_CHANGE_A;
359 s->s3->change_cipher_spec=0;
362 case SSL3_ST_CW_CHANGE_A:
363 case SSL3_ST_CW_CHANGE_B:
364 ret=ssl3_send_change_cipher_spec(s,
365 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
366 if (ret <= 0) goto end;
367 s->state=SSL3_ST_CW_FINISHED_A;
370 s->session->cipher=s->s3->tmp.new_cipher;
371 if (s->s3->tmp.new_compression == NULL)
372 s->session->compress_meth=0;
374 s->session->compress_meth=
375 s->s3->tmp.new_compression->id;
376 if (!s->method->ssl3_enc->setup_key_block(s))
382 if (!s->method->ssl3_enc->change_cipher_state(s,
383 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
391 case SSL3_ST_CW_FINISHED_A:
392 case SSL3_ST_CW_FINISHED_B:
393 ret=ssl3_send_finished(s,
394 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
395 s->method->ssl3_enc->client_finished_label,
396 s->method->ssl3_enc->client_finished_label_len);
397 if (ret <= 0) goto end;
398 s->state=SSL3_ST_CW_FLUSH;
401 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
404 s->s3->tmp.next_state=SSL_ST_OK;
405 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
408 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
409 s->s3->delay_buf_pop_ret=0;
414 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
419 case SSL3_ST_CR_FINISHED_A:
420 case SSL3_ST_CR_FINISHED_B:
422 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
423 SSL3_ST_CR_FINISHED_B);
424 if (ret <= 0) goto end;
427 s->state=SSL3_ST_CW_CHANGE_A;
433 case SSL3_ST_CW_FLUSH:
434 /* number of bytes to be flushed */
435 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
438 s->rwstate=SSL_WRITING;
439 num1=BIO_flush(s->wbio);
440 if (num1 <= 0) { ret= -1; goto end; }
441 s->rwstate=SSL_NOTHING;
444 s->state=s->s3->tmp.next_state;
448 /* clean a few things up */
449 ssl3_cleanup_key_block(s);
451 if (s->init_buf != NULL)
453 BUF_MEM_free(s->init_buf);
457 /* If we are not 'joining' the last two packets,
458 * remove the buffering now */
459 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
460 ssl_free_wbio_buffer(s);
461 /* else do it later in ssl3_write */
466 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
467 if (s->hit) s->ctx->stats.sess_hit++;
471 s->handshake_func=ssl3_connect;
472 s->ctx->stats.sess_connect_good++;
474 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
480 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
486 /* did we do anything */
487 if (!s->s3->tmp.reuse_message && !skip)
491 if ((ret=BIO_flush(s->wbio)) <= 0)
495 if ((cb != NULL) && (s->state != state))
499 cb(s,SSL_CB_CONNECT_LOOP,1);
510 cb(s,SSL_CB_CONNECT_EXIT,ret);
515 static int ssl3_client_hello(SSL *s)
520 unsigned long Time,l;
523 buf=(unsigned char *)s->init_buf->data;
524 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
526 if ((s->session == NULL) ||
527 (s->session->ssl_version != s->version) ||
528 (s->session->not_resumable))
530 if (!ssl_get_new_session(s,0))
533 /* else use the pre-loaded session */
535 p=s->s3->client_random;
536 Time=time(NULL); /* Time */
538 if(RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-sizeof(Time)) <= 0)
541 /* Do the message type and length last */
544 *(p++)=s->version>>8;
545 *(p++)=s->version&0xff;
546 s->client_version=s->version;
549 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
556 i=s->session->session_id_length;
560 if (i > sizeof s->session->session_id)
562 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
565 memcpy(p,s->session->session_id,i);
569 /* Ciphers supported */
570 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]));
573 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
580 if (s->ctx->comp_methods == NULL)
583 j=sk_SSL_COMP_num(s->ctx->comp_methods);
587 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
590 *(p++)=0; /* Add the NULL method */
594 *(d++)=SSL3_MT_CLIENT_HELLO;
597 s->state=SSL3_ST_CW_CLNT_HELLO_B;
598 /* number of bytes to write */
603 /* SSL3_ST_CW_CLNT_HELLO_B */
604 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
609 static int ssl3_get_server_hello(SSL *s)
611 STACK_OF(SSL_CIPHER) *sk;
619 n=ssl3_get_message(s,
620 SSL3_ST_CR_SRVR_HELLO_A,
621 SSL3_ST_CR_SRVR_HELLO_B,
622 SSL3_MT_SERVER_HELLO,
626 if (!ok) return((int)n);
627 d=p=(unsigned char *)s->init_msg;
629 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
631 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
632 s->version=(s->version&0xff00)|p[1];
633 al=SSL_AD_PROTOCOL_VERSION;
638 /* load the server hello data */
639 /* load the server random */
640 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
643 /* get the session-id */
646 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
648 al=SSL_AD_ILLEGAL_PARAMETER;
649 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
653 if (j != 0 && j == s->session->session_id_length
654 && memcmp(p,s->session->session_id,j) == 0)
656 if(s->sid_ctx_length != s->session->sid_ctx_length
657 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
659 /* actually a client application bug */
660 al=SSL_AD_ILLEGAL_PARAMETER;
661 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
666 else /* a miss or crap from the other end */
668 /* If we were trying for session-id reuse, make a new
669 * SSL_SESSION so we don't stuff up other people */
671 if (s->session->session_id_length > 0)
673 if (!ssl_get_new_session(s,0))
675 al=SSL_AD_INTERNAL_ERROR;
679 s->session->session_id_length=j;
680 memcpy(s->session->session_id,p,j); /* j could be 0 */
683 c=ssl_get_cipher_by_char(s,p);
687 al=SSL_AD_ILLEGAL_PARAMETER;
688 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
691 p+=ssl_put_cipher_by_char(s,NULL,NULL);
693 sk=ssl_get_ciphers_by_id(s);
694 i=sk_SSL_CIPHER_find(sk,c);
697 /* we did not say we would use this cipher */
698 al=SSL_AD_ILLEGAL_PARAMETER;
699 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
703 /* Depending on the session caching (internal/external), the cipher
704 and/or cipher_id values may not be set. Make sure that
705 cipher_id is set and use it for comparison. */
706 if (s->session->cipher)
707 s->session->cipher_id = s->session->cipher->id;
708 if (s->hit && (s->session->cipher_id != c->id))
711 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
713 al=SSL_AD_ILLEGAL_PARAMETER;
714 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
718 s->s3->tmp.new_cipher=c;
720 /* lets get the compression algorithm */
726 comp=ssl3_comp_find(s->ctx->comp_methods,j);
728 if ((j != 0) && (comp == NULL))
730 al=SSL_AD_ILLEGAL_PARAMETER;
731 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
736 s->s3->tmp.new_compression=comp;
741 /* wrong packet length */
742 al=SSL_AD_DECODE_ERROR;
743 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
749 ssl3_send_alert(s,SSL3_AL_FATAL,al);
754 static int ssl3_get_server_certificate(SSL *s)
757 unsigned long n,nc,llen,l;
759 unsigned char *p,*d,*q;
760 STACK_OF(X509) *sk=NULL;
763 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
765 n=ssl3_get_message(s,
772 if (!ok) return((int)n);
774 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
776 s->s3->tmp.reuse_message=1;
780 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
782 al=SSL_AD_UNEXPECTED_MESSAGE;
783 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
786 d=p=(unsigned char *)s->init_msg;
788 if ((sk=sk_X509_new_null()) == NULL)
790 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
797 al=SSL_AD_DECODE_ERROR;
798 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
801 for (nc=0; nc<llen; )
806 al=SSL_AD_DECODE_ERROR;
807 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
812 x=d2i_X509(NULL,&q,l);
815 al=SSL_AD_BAD_CERTIFICATE;
816 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
821 al=SSL_AD_DECODE_ERROR;
822 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
825 if (!sk_X509_push(sk,x))
827 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
835 i=ssl_verify_cert_chain(s,sk);
836 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)
837 #ifndef OPENSSL_NO_KRB5
838 && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK))
839 != (SSL_aKRB5|SSL_kKRB5)
840 #endif /* OPENSSL_NO_KRB5 */
843 al=ssl_verify_alarm_type(s->verify_result);
844 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
847 ERR_clear_error(); /* but we keep s->verify_result */
849 sc=ssl_sess_cert_new();
850 if (sc == NULL) goto err;
852 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
853 s->session->sess_cert=sc;
856 /* Inconsistency alert: cert_chain does include the peer's
857 * certificate, which we don't include in s3_srvr.c */
858 x=sk_X509_value(sk,0);
860 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
862 pkey=X509_get_pubkey(x);
864 /* VRS: allow null cert if auth == KRB5 */
865 need_cert = ((s->s3->tmp.new_cipher->algorithms
866 & (SSL_MKEY_MASK|SSL_AUTH_MASK))
867 == (SSL_aKRB5|SSL_kKRB5))? 0: 1;
870 printf("pkey,x = %p, %p\n", pkey,x);
871 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
872 printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name,
873 s->s3->tmp.new_cipher->algorithms, need_cert);
874 #endif /* KSSL_DEBUG */
876 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
880 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
881 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
885 i=ssl_cert_type(x,pkey);
886 if (need_cert && i < 0)
890 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
891 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
897 sc->peer_cert_type=i;
898 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
899 /* Why would the following ever happen?
900 * We just created sc a couple of lines ago. */
901 if (sc->peer_pkeys[i].x509 != NULL)
902 X509_free(sc->peer_pkeys[i].x509);
903 sc->peer_pkeys[i].x509=x;
904 sc->peer_key= &(sc->peer_pkeys[i]);
906 if (s->session->peer != NULL)
907 X509_free(s->session->peer);
908 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
913 sc->peer_cert_type=i;
916 if (s->session->peer != NULL)
917 X509_free(s->session->peer);
918 s->session->peer=NULL;
920 s->session->verify_result = s->verify_result;
928 ssl3_send_alert(s,SSL3_AL_FATAL,al);
933 sk_X509_pop_free(sk,X509_free);
937 static int ssl3_get_key_exchange(SSL *s)
939 #ifndef OPENSSL_NO_RSA
940 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
943 unsigned char *param,*p;
944 int al,i,j,param_len,ok;
947 #ifndef OPENSSL_NO_RSA
950 #ifndef OPENSSL_NO_DH
954 /* use same message size as in ssl3_get_certificate_request()
955 * as ServerKeyExchange message may be skipped */
956 n=ssl3_get_message(s,
957 SSL3_ST_CR_KEY_EXCH_A,
958 SSL3_ST_CR_KEY_EXCH_B,
963 if (!ok) return((int)n);
965 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
967 s->s3->tmp.reuse_message=1;
971 param=p=(unsigned char *)s->init_msg;
973 if (s->session->sess_cert != NULL)
975 #ifndef OPENSSL_NO_RSA
976 if (s->session->sess_cert->peer_rsa_tmp != NULL)
978 RSA_free(s->session->sess_cert->peer_rsa_tmp);
979 s->session->sess_cert->peer_rsa_tmp=NULL;
982 #ifndef OPENSSL_NO_DH
983 if (s->session->sess_cert->peer_dh_tmp)
985 DH_free(s->session->sess_cert->peer_dh_tmp);
986 s->session->sess_cert->peer_dh_tmp=NULL;
992 s->session->sess_cert=ssl_sess_cert_new();
996 alg=s->s3->tmp.new_cipher->algorithms;
997 EVP_MD_CTX_init(&md_ctx);
999 #ifndef OPENSSL_NO_RSA
1002 if ((rsa=RSA_new()) == NULL)
1004 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1011 al=SSL_AD_DECODE_ERROR;
1012 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1015 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1017 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1026 al=SSL_AD_DECODE_ERROR;
1027 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1030 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1032 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1038 /* this should be because we are using an export cipher */
1040 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1043 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1046 s->session->sess_cert->peer_rsa_tmp=rsa;
1049 #else /* OPENSSL_NO_RSA */
1053 #ifndef OPENSSL_NO_DH
1054 else if (alg & SSL_kEDH)
1056 if ((dh=DH_new()) == NULL)
1058 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1065 al=SSL_AD_DECODE_ERROR;
1066 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1069 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1071 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1080 al=SSL_AD_DECODE_ERROR;
1081 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1084 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1086 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1095 al=SSL_AD_DECODE_ERROR;
1096 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1099 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1101 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1107 #ifndef OPENSSL_NO_RSA
1109 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1114 #ifndef OPENSSL_NO_DSA
1115 else if (alg & SSL_aDSS)
1116 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1118 /* else anonymous DH, so no certificate or pkey. */
1120 s->session->sess_cert->peer_dh_tmp=dh;
1123 else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
1125 al=SSL_AD_ILLEGAL_PARAMETER;
1126 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1129 #endif /* !OPENSSL_NO_DH */
1132 al=SSL_AD_HANDSHAKE_FAILURE;
1133 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1138 /* p points to the next byte, there are 'n' bytes left */
1141 /* if it was signed, check the signature */
1146 j=EVP_PKEY_size(pkey);
1148 if ((i != n) || (n > j) || (n <= 0))
1150 /* wrong packet length */
1151 al=SSL_AD_DECODE_ERROR;
1152 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1156 #ifndef OPENSSL_NO_RSA
1157 if (pkey->type == EVP_PKEY_RSA)
1163 for (num=2; num > 0; num--)
1165 EVP_MD_CTX_set_flags(&md_ctx,
1166 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1167 EVP_DigestInit_ex(&md_ctx,(num == 2)
1168 ?s->ctx->md5:s->ctx->sha1, NULL);
1169 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1170 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1171 EVP_DigestUpdate(&md_ctx,param,param_len);
1173 if(s->version == TLS1_VERSION && num == 2)
1177 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1179 if(s->version == TLS1_VERSION && num == 2)
1185 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1189 al=SSL_AD_DECRYPT_ERROR;
1190 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1196 al=SSL_AD_DECRYPT_ERROR;
1197 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1203 #ifndef OPENSSL_NO_DSA
1204 if (pkey->type == EVP_PKEY_DSA)
1207 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1208 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1209 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1210 EVP_VerifyUpdate(&md_ctx,param,param_len);
1211 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1214 al=SSL_AD_DECRYPT_ERROR;
1215 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1222 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1228 /* still data left over */
1229 if (!(alg & SSL_aNULL))
1231 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1236 al=SSL_AD_DECODE_ERROR;
1237 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1241 EVP_PKEY_free(pkey);
1242 EVP_MD_CTX_cleanup(&md_ctx);
1245 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1247 EVP_PKEY_free(pkey);
1248 #ifndef OPENSSL_NO_RSA
1252 #ifndef OPENSSL_NO_DH
1256 EVP_MD_CTX_cleanup(&md_ctx);
1260 static int ssl3_get_certificate_request(SSL *s)
1263 unsigned long n,nc,l;
1264 unsigned int llen,ctype_num,i;
1266 unsigned char *p,*d,*q;
1267 STACK_OF(X509_NAME) *ca_sk=NULL;
1269 n=ssl3_get_message(s,
1270 SSL3_ST_CR_CERT_REQ_A,
1271 SSL3_ST_CR_CERT_REQ_B,
1276 if (!ok) return((int)n);
1278 s->s3->tmp.cert_req=0;
1280 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1282 s->s3->tmp.reuse_message=1;
1286 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1288 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1289 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1293 /* TLS does not like anon-DH with client cert */
1294 if (s->version > SSL3_VERSION)
1296 l=s->s3->tmp.new_cipher->algorithms;
1299 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1300 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1305 d=p=(unsigned char *)s->init_msg;
1307 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1309 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1313 /* get the certificate types */
1315 if (ctype_num > SSL3_CT_NUMBER)
1316 ctype_num=SSL3_CT_NUMBER;
1317 for (i=0; i<ctype_num; i++)
1318 s->s3->tmp.ctype[i]= p[i];
1321 /* get the CA RDNs */
1326 out=fopen("/tmp/vsign.der","w");
1327 fwrite(p,1,llen,out);
1332 if ((llen+ctype_num+2+1) != n)
1334 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1335 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1339 for (nc=0; nc<llen; )
1342 if ((l+nc+2) > llen)
1344 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1345 goto cont; /* netscape bugs */
1346 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1347 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1353 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1355 /* If netscape tolerance is on, ignore errors */
1356 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1360 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1361 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1368 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1369 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1372 if (!sk_X509_NAME_push(ca_sk,xn))
1374 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1388 /* we should setup a certificate to return.... */
1389 s->s3->tmp.cert_req=1;
1390 s->s3->tmp.ctype_num=ctype_num;
1391 if (s->s3->tmp.ca_names != NULL)
1392 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1393 s->s3->tmp.ca_names=ca_sk;
1398 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1402 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1404 return(X509_NAME_cmp(*a,*b));
1407 static int ssl3_get_server_done(SSL *s)
1412 n=ssl3_get_message(s,
1413 SSL3_ST_CR_SRVR_DONE_A,
1414 SSL3_ST_CR_SRVR_DONE_B,
1415 SSL3_MT_SERVER_DONE,
1416 30, /* should be very small, like 0 :-) */
1419 if (!ok) return((int)n);
1422 /* should contain no data */
1423 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1424 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1431 static int ssl3_send_client_key_exchange(SSL *s)
1433 unsigned char *p,*d;
1436 #ifndef OPENSSL_NO_RSA
1438 EVP_PKEY *pkey=NULL;
1440 #ifndef OPENSSL_NO_KRB5
1442 #endif /* OPENSSL_NO_KRB5 */
1444 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1446 d=(unsigned char *)s->init_buf->data;
1449 l=s->s3->tmp.new_cipher->algorithms;
1451 /* Fool emacs indentation */
1453 #ifndef OPENSSL_NO_RSA
1454 else if (l & SSL_kRSA)
1457 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1459 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1460 rsa=s->session->sess_cert->peer_rsa_tmp;
1463 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1464 if ((pkey == NULL) ||
1465 (pkey->type != EVP_PKEY_RSA) ||
1466 (pkey->pkey.rsa == NULL))
1468 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1472 EVP_PKEY_free(pkey);
1475 tmp_buf[0]=s->client_version>>8;
1476 tmp_buf[1]=s->client_version&0xff;
1477 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1480 s->session->master_key_length=sizeof tmp_buf;
1483 /* Fix buf for TLS and beyond */
1484 if (s->version > SSL3_VERSION)
1486 n=RSA_public_encrypt(sizeof tmp_buf,
1487 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1489 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1490 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1494 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1498 /* Fix buf for TLS and beyond */
1499 if (s->version > SSL3_VERSION)
1505 s->session->master_key_length=
1506 s->method->ssl3_enc->generate_master_secret(s,
1507 s->session->master_key,
1508 tmp_buf,sizeof tmp_buf);
1509 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
1512 #ifndef OPENSSL_NO_KRB5
1513 else if (l & SSL_kKRB5)
1515 krb5_error_code krb5rc;
1516 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1517 /* krb5_data krb5_ap_req; */
1518 krb5_data *enc_ticket;
1519 krb5_data authenticator, *authp = NULL;
1520 EVP_CIPHER_CTX ciph_ctx;
1521 EVP_CIPHER *enc = NULL;
1522 unsigned char iv[EVP_MAX_IV_LENGTH];
1523 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1524 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1525 + EVP_MAX_IV_LENGTH];
1526 int padl, outl = sizeof(epms);
1528 EVP_CIPHER_CTX_init(&ciph_ctx);
1531 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1533 #endif /* KSSL_DEBUG */
1537 if (KRB5SENDAUTH) authp = &authenticator;
1538 #endif /* KRB5SENDAUTH */
1540 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
1542 enc = kssl_map_enc(kssl_ctx->enctype);
1547 printf("kssl_cget_tkt rtn %d\n", krb5rc);
1548 if (krb5rc && kssl_err.text)
1549 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
1551 #endif /* KSSL_DEBUG */
1555 ssl3_send_alert(s,SSL3_AL_FATAL,
1556 SSL_AD_HANDSHAKE_FAILURE);
1557 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1562 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
1563 ** in place of RFC 2712 KerberosWrapper, as in:
1565 ** Send ticket (copy to *p, set n = length)
1566 ** n = krb5_ap_req.length;
1567 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1568 ** if (krb5_ap_req.data)
1569 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1571 ** Now using real RFC 2712 KerberosWrapper
1572 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
1573 ** Note: 2712 "opaque" types are here replaced
1574 ** with a 2-byte length followed by the value.
1576 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
1577 ** Where "xx xx" = length bytes. Shown here with
1578 ** optional authenticator omitted.
1581 /* KerberosWrapper.Ticket */
1582 s2n(enc_ticket->length,p);
1583 memcpy(p, enc_ticket->data, enc_ticket->length);
1584 p+= enc_ticket->length;
1585 n = enc_ticket->length + 2;
1587 /* KerberosWrapper.Authenticator */
1588 if (authp && authp->length)
1590 s2n(authp->length,p);
1591 memcpy(p, authp->data, authp->length);
1593 n+= authp->length + 2;
1601 s2n(0,p);/* null authenticator length */
1605 if (RAND_bytes(tmp_buf,sizeof tmp_buf) <= 0)
1608 /* 20010420 VRS. Tried it this way; failed.
1609 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
1610 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
1611 ** kssl_ctx->length);
1612 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
1615 memset(iv, 0, sizeof iv); /* per RFC 1510 */
1616 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
1618 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
1620 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
1622 if (outl > sizeof epms)
1624 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
1627 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
1629 /* KerberosWrapper.EncryptedPreMasterSecret */
1631 memcpy(p, epms, outl);
1635 s->session->master_key_length=
1636 s->method->ssl3_enc->generate_master_secret(s,
1637 s->session->master_key,
1638 tmp_buf, sizeof tmp_buf);
1640 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
1641 OPENSSL_cleanse(epms, outl);
1644 #ifndef OPENSSL_NO_DH
1645 else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1647 DH *dh_srvr,*dh_clnt;
1649 if (s->session->sess_cert->peer_dh_tmp != NULL)
1650 dh_srvr=s->session->sess_cert->peer_dh_tmp;
1653 /* we get them from the cert */
1654 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1655 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
1659 /* generate a new random key */
1660 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
1662 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1665 if (!DH_generate_key(dh_clnt))
1667 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1671 /* use the 'p' output buffer for the DH key, but
1672 * make sure to clear it out afterwards */
1674 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
1678 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1682 /* generate master key from the result */
1683 s->session->master_key_length=
1684 s->method->ssl3_enc->generate_master_secret(s,
1685 s->session->master_key,p,n);
1689 /* send off the data */
1690 n=BN_num_bytes(dh_clnt->pub_key);
1692 BN_bn2bin(dh_clnt->pub_key,p);
1697 /* perhaps clean things up a bit EAY EAY EAY EAY*/
1702 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1703 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1707 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
1710 s->state=SSL3_ST_CW_KEY_EXCH_B;
1711 /* number of bytes to write */
1716 /* SSL3_ST_CW_KEY_EXCH_B */
1717 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1722 static int ssl3_send_client_verify(SSL *s)
1724 unsigned char *p,*d;
1725 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
1727 #ifndef OPENSSL_NO_RSA
1731 #ifndef OPENSSL_NO_DSA
1735 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
1737 d=(unsigned char *)s->init_buf->data;
1739 pkey=s->cert->key->privatekey;
1741 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
1742 &(data[MD5_DIGEST_LENGTH]));
1744 #ifndef OPENSSL_NO_RSA
1745 if (pkey->type == EVP_PKEY_RSA)
1747 s->method->ssl3_enc->cert_verify_mac(s,
1748 &(s->s3->finish_dgst1),&(data[0]));
1749 if (RSA_sign(NID_md5_sha1, data,
1750 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
1751 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
1753 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
1761 #ifndef OPENSSL_NO_DSA
1762 if (pkey->type == EVP_PKEY_DSA)
1764 if (!DSA_sign(pkey->save_type,
1765 &(data[MD5_DIGEST_LENGTH]),
1766 SHA_DIGEST_LENGTH,&(p[2]),
1767 (unsigned int *)&j,pkey->pkey.dsa))
1769 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
1778 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
1781 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
1784 s->state=SSL3_ST_CW_CERT_VRFY_B;
1785 s->init_num=(int)n+4;
1788 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1793 static int ssl3_send_client_certificate(SSL *s)
1796 EVP_PKEY *pkey=NULL;
1800 if (s->state == SSL3_ST_CW_CERT_A)
1802 if ((s->cert == NULL) ||
1803 (s->cert->key->x509 == NULL) ||
1804 (s->cert->key->privatekey == NULL))
1805 s->state=SSL3_ST_CW_CERT_B;
1807 s->state=SSL3_ST_CW_CERT_C;
1810 /* We need to get a client cert */
1811 if (s->state == SSL3_ST_CW_CERT_B)
1813 /* If we get an error, we need to
1814 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
1815 * We then get retied later */
1817 if (s->ctx->client_cert_cb != NULL)
1818 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
1821 s->rwstate=SSL_X509_LOOKUP;
1824 s->rwstate=SSL_NOTHING;
1825 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
1827 s->state=SSL3_ST_CW_CERT_B;
1828 if ( !SSL_use_certificate(s,x509) ||
1829 !SSL_use_PrivateKey(s,pkey))
1835 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
1838 if (x509 != NULL) X509_free(x509);
1839 if (pkey != NULL) EVP_PKEY_free(pkey);
1842 if (s->version == SSL3_VERSION)
1844 s->s3->tmp.cert_req=0;
1845 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
1850 s->s3->tmp.cert_req=2;
1854 /* Ok, we have a cert */
1855 s->state=SSL3_ST_CW_CERT_C;
1858 if (s->state == SSL3_ST_CW_CERT_C)
1860 s->state=SSL3_ST_CW_CERT_D;
1861 l=ssl3_output_cert_chain(s,
1862 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
1866 /* SSL3_ST_CW_CERT_D */
1867 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1870 #define has_bits(i,m) (((i)&(m)) == (m))
1872 static int ssl3_check_cert_and_algorithm(SSL *s)
1876 EVP_PKEY *pkey=NULL;
1878 #ifndef OPENSSL_NO_RSA
1881 #ifndef OPENSSL_NO_DH
1885 sc=s->session->sess_cert;
1889 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
1893 algs=s->s3->tmp.new_cipher->algorithms;
1895 /* we don't have a certificate */
1896 if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5))
1899 #ifndef OPENSSL_NO_RSA
1900 rsa=s->session->sess_cert->peer_rsa_tmp;
1902 #ifndef OPENSSL_NO_DH
1903 dh=s->session->sess_cert->peer_dh_tmp;
1906 /* This is the passed certificate */
1908 idx=sc->peer_cert_type;
1909 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
1910 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
1911 EVP_PKEY_free(pkey);
1914 /* Check that we have a certificate if we require one */
1915 if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
1917 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
1920 #ifndef OPENSSL_NO_DSA
1921 else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
1923 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
1927 #ifndef OPENSSL_NO_RSA
1928 if ((algs & SSL_kRSA) &&
1929 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
1931 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
1935 #ifndef OPENSSL_NO_DH
1936 if ((algs & SSL_kEDH) &&
1937 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
1939 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
1942 else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
1944 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
1947 #ifndef OPENSSL_NO_DSA
1948 else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
1950 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
1956 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
1958 #ifndef OPENSSL_NO_RSA
1959 if (algs & SSL_kRSA)
1962 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
1964 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
1970 #ifndef OPENSSL_NO_DH
1971 if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1974 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
1976 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
1983 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
1989 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);