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/evp.h>
66 #include <openssl/md5.h>
68 static SSL_METHOD *ssl3_get_client_method(int ver);
69 static int ssl3_client_hello(SSL *s);
70 static int ssl3_get_server_hello(SSL *s);
71 static int ssl3_get_certificate_request(SSL *s);
72 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
73 static int ssl3_get_server_done(SSL *s);
74 static int ssl3_send_client_verify(SSL *s);
75 static int ssl3_send_client_certificate(SSL *s);
76 static int ssl3_send_client_key_exchange(SSL *s);
77 static int ssl3_get_key_exchange(SSL *s);
78 static int ssl3_get_server_certificate(SSL *s);
79 static int ssl3_check_cert_and_algorithm(SSL *s);
80 static SSL_METHOD *ssl3_get_client_method(int ver)
82 if (ver == SSL3_VERSION)
83 return(SSLv3_client_method());
88 SSL_METHOD *SSLv3_client_method(void)
91 static SSL_METHOD SSLv3_client_data;
96 memcpy((char *)&SSLv3_client_data,(char *)sslv3_base_method(),
98 SSLv3_client_data.ssl_connect=ssl3_connect;
99 SSLv3_client_data.get_ssl_method=ssl3_get_client_method;
101 return(&SSLv3_client_data);
104 int ssl3_connect(SSL *s)
107 unsigned long Time=time(NULL),l;
111 int new_state,state,skip=0;;
113 RAND_add(&Time,sizeof(Time),0);
117 if (s->info_callback != NULL)
119 else if (s->ctx->info_callback != NULL)
120 cb=s->ctx->info_callback;
122 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
131 case SSL_ST_RENEGOTIATE:
133 s->state=SSL_ST_CONNECT;
134 s->ctx->stats.sess_connect_renegotiate++;
138 case SSL_ST_BEFORE|SSL_ST_CONNECT:
139 case SSL_ST_OK|SSL_ST_CONNECT:
142 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
144 if ((s->version & 0xff00 ) != 0x0300)
146 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
151 /* s->version=SSL3_VERSION; */
152 s->type=SSL_ST_CONNECT;
154 if (s->init_buf == NULL)
156 if ((buf=BUF_MEM_new()) == NULL)
161 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
169 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
171 /* setup buffing BIO */
172 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
174 /* don't push the buffering BIO quite yet */
176 ssl3_init_finished_mac(s);
178 s->state=SSL3_ST_CW_CLNT_HELLO_A;
179 s->ctx->stats.sess_connect++;
183 case SSL3_ST_CW_CLNT_HELLO_A:
184 case SSL3_ST_CW_CLNT_HELLO_B:
187 ret=ssl3_client_hello(s);
188 if (ret <= 0) goto end;
189 s->state=SSL3_ST_CR_SRVR_HELLO_A;
192 /* turn on buffering for the next lot of output */
193 if (s->bbio != s->wbio)
194 s->wbio=BIO_push(s->bbio,s->wbio);
198 case SSL3_ST_CR_SRVR_HELLO_A:
199 case SSL3_ST_CR_SRVR_HELLO_B:
200 ret=ssl3_get_server_hello(s);
201 if (ret <= 0) goto end;
203 s->state=SSL3_ST_CR_FINISHED_A;
205 s->state=SSL3_ST_CR_CERT_A;
209 case SSL3_ST_CR_CERT_A:
210 case SSL3_ST_CR_CERT_B:
211 /* Check if it is anon DH */
212 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL))
214 ret=ssl3_get_server_certificate(s);
215 if (ret <= 0) goto end;
219 s->state=SSL3_ST_CR_KEY_EXCH_A;
223 case SSL3_ST_CR_KEY_EXCH_A:
224 case SSL3_ST_CR_KEY_EXCH_B:
225 ret=ssl3_get_key_exchange(s);
226 if (ret <= 0) goto end;
227 s->state=SSL3_ST_CR_CERT_REQ_A;
230 /* at this point we check that we have the
231 * required stuff from the server */
232 if (!ssl3_check_cert_and_algorithm(s))
239 case SSL3_ST_CR_CERT_REQ_A:
240 case SSL3_ST_CR_CERT_REQ_B:
241 ret=ssl3_get_certificate_request(s);
242 if (ret <= 0) goto end;
243 s->state=SSL3_ST_CR_SRVR_DONE_A;
247 case SSL3_ST_CR_SRVR_DONE_A:
248 case SSL3_ST_CR_SRVR_DONE_B:
249 ret=ssl3_get_server_done(s);
250 if (ret <= 0) goto end;
251 if (s->s3->tmp.cert_req)
252 s->state=SSL3_ST_CW_CERT_A;
254 s->state=SSL3_ST_CW_KEY_EXCH_A;
259 case SSL3_ST_CW_CERT_A:
260 case SSL3_ST_CW_CERT_B:
261 case SSL3_ST_CW_CERT_C:
262 case SSL3_ST_CW_CERT_D:
263 ret=ssl3_send_client_certificate(s);
264 if (ret <= 0) goto end;
265 s->state=SSL3_ST_CW_KEY_EXCH_A;
269 case SSL3_ST_CW_KEY_EXCH_A:
270 case SSL3_ST_CW_KEY_EXCH_B:
271 ret=ssl3_send_client_key_exchange(s);
272 if (ret <= 0) goto end;
273 l=s->s3->tmp.new_cipher->algorithms;
274 /* EAY EAY EAY need to check for DH fix cert
276 /* For TLS, cert_req is set to 2, so a cert chain
277 * of nothing is sent, but no verify packet is sent */
278 if (s->s3->tmp.cert_req == 1)
280 s->state=SSL3_ST_CW_CERT_VRFY_A;
284 s->state=SSL3_ST_CW_CHANGE_A;
285 s->s3->change_cipher_spec=0;
291 case SSL3_ST_CW_CERT_VRFY_A:
292 case SSL3_ST_CW_CERT_VRFY_B:
293 ret=ssl3_send_client_verify(s);
294 if (ret <= 0) goto end;
295 s->state=SSL3_ST_CW_CHANGE_A;
297 s->s3->change_cipher_spec=0;
300 case SSL3_ST_CW_CHANGE_A:
301 case SSL3_ST_CW_CHANGE_B:
302 ret=ssl3_send_change_cipher_spec(s,
303 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
304 if (ret <= 0) goto end;
305 s->state=SSL3_ST_CW_FINISHED_A;
308 s->session->cipher=s->s3->tmp.new_cipher;
309 if (s->s3->tmp.new_compression == NULL)
310 s->session->compress_meth=0;
312 s->session->compress_meth=
313 s->s3->tmp.new_compression->id;
314 if (!s->method->ssl3_enc->setup_key_block(s))
320 if (!s->method->ssl3_enc->change_cipher_state(s,
321 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
329 case SSL3_ST_CW_FINISHED_A:
330 case SSL3_ST_CW_FINISHED_B:
331 ret=ssl3_send_finished(s,
332 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
333 s->method->ssl3_enc->client_finished_label,
334 s->method->ssl3_enc->client_finished_label_len);
335 if (ret <= 0) goto end;
336 s->state=SSL3_ST_CW_FLUSH;
339 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
342 s->s3->tmp.next_state=SSL_ST_OK;
343 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
346 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
347 s->s3->delay_buf_pop_ret=0;
352 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
357 case SSL3_ST_CR_FINISHED_A:
358 case SSL3_ST_CR_FINISHED_B:
360 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
361 SSL3_ST_CR_FINISHED_B);
362 if (ret <= 0) goto end;
365 s->state=SSL3_ST_CW_CHANGE_A;
371 case SSL3_ST_CW_FLUSH:
372 /* number of bytes to be flushed */
373 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
376 s->rwstate=SSL_WRITING;
377 num1=BIO_flush(s->wbio);
378 if (num1 <= 0) { ret= -1; goto end; }
379 s->rwstate=SSL_NOTHING;
382 s->state=s->s3->tmp.next_state;
386 /* clean a few things up */
387 ssl3_cleanup_key_block(s);
389 if (s->init_buf != NULL)
391 BUF_MEM_free(s->init_buf);
395 /* If we are not 'joining' the last two packets,
396 * remove the buffering now */
397 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
398 ssl_free_wbio_buffer(s);
399 /* else do it later in ssl3_write */
404 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
405 if (s->hit) s->ctx->stats.sess_hit++;
409 s->handshake_func=ssl3_connect;
410 s->ctx->stats.sess_connect_good++;
412 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
418 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
424 /* did we do anything */
425 if (!s->s3->tmp.reuse_message && !skip)
429 if ((ret=BIO_flush(s->wbio)) <= 0)
433 if ((cb != NULL) && (s->state != state))
437 cb(s,SSL_CB_CONNECT_LOOP,1);
445 cb(s,SSL_CB_CONNECT_EXIT,ret);
451 static int ssl3_client_hello(SSL *s)
456 unsigned long Time,l;
459 buf=(unsigned char *)s->init_buf->data;
460 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
462 if ((s->session == NULL) ||
463 (s->session->ssl_version != s->version) ||
464 (s->session->not_resumable))
466 if (!ssl_get_new_session(s,0))
469 /* else use the pre-loaded session */
471 p=s->s3->client_random;
472 Time=time(NULL); /* Time */
474 RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-sizeof(Time));
476 /* Do the message type and length last */
479 *(p++)=s->version>>8;
480 *(p++)=s->version&0xff;
481 s->client_version=s->version;
484 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
491 i=s->session->session_id_length;
495 memcpy(p,s->session->session_id,i);
499 /* Ciphers supported */
500 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]));
503 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
510 if (s->ctx->comp_methods == NULL)
513 j=sk_SSL_COMP_num(s->ctx->comp_methods);
517 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
520 *(p++)=0; /* Add the NULL method */
524 *(d++)=SSL3_MT_CLIENT_HELLO;
527 s->state=SSL3_ST_CW_CLNT_HELLO_B;
528 /* number of bytes to write */
533 /* SSL3_ST_CW_CLNT_HELLO_B */
534 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
539 static int ssl3_get_server_hello(SSL *s)
541 STACK_OF(SSL_CIPHER) *sk;
549 n=ssl3_get_message(s,
550 SSL3_ST_CR_SRVR_HELLO_A,
551 SSL3_ST_CR_SRVR_HELLO_B,
552 SSL3_MT_SERVER_HELLO,
556 if (!ok) return((int)n);
557 d=p=(unsigned char *)s->init_msg;
559 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
561 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
562 s->version=(s->version&0xff00)|p[1];
563 al=SSL_AD_PROTOCOL_VERSION;
568 /* load the server hello data */
569 /* load the server random */
570 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
573 /* get the session-id */
576 if ((j != 0) && (j != SSL3_SESSION_ID_SIZE))
578 /* SSLref returns 16 :-( */
579 if (j < SSL2_SSL_SESSION_ID_LENGTH)
581 al=SSL_AD_ILLEGAL_PARAMETER;
582 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_SHORT);
586 if (j != 0 && j == s->session->session_id_length
587 && memcmp(p,s->session->session_id,j) == 0)
589 if(s->sid_ctx_length != s->session->sid_ctx_length
590 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
592 al=SSL_AD_ILLEGAL_PARAMETER;
593 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
598 else /* a miss or crap from the other end */
600 /* If we were trying for session-id reuse, make a new
601 * SSL_SESSION so we don't stuff up other people */
603 if (s->session->session_id_length > 0)
605 if (!ssl_get_new_session(s,0))
607 al=SSL_AD_INTERNAL_ERROR;
611 s->session->session_id_length=j;
612 memcpy(s->session->session_id,p,j); /* j could be 0 */
615 c=ssl_get_cipher_by_char(s,p);
619 al=SSL_AD_ILLEGAL_PARAMETER;
620 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
623 p+=ssl_put_cipher_by_char(s,NULL,NULL);
625 sk=ssl_get_ciphers_by_id(s);
626 i=sk_SSL_CIPHER_find(sk,c);
629 /* we did not say we would use this cipher */
630 al=SSL_AD_ILLEGAL_PARAMETER;
631 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
635 if (s->hit && (s->session->cipher != c))
638 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
640 al=SSL_AD_ILLEGAL_PARAMETER;
641 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
645 s->s3->tmp.new_cipher=c;
647 /* lets get the compression algorithm */
653 comp=ssl3_comp_find(s->ctx->comp_methods,j);
655 if ((j != 0) && (comp == NULL))
657 al=SSL_AD_ILLEGAL_PARAMETER;
658 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
663 s->s3->tmp.new_compression=comp;
668 /* wrong packet length */
669 al=SSL_AD_DECODE_ERROR;
670 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
676 ssl3_send_alert(s,SSL3_AL_FATAL,al);
681 static int ssl3_get_server_certificate(SSL *s)
684 unsigned long n,nc,llen,l;
686 unsigned char *p,*d,*q;
687 STACK_OF(X509) *sk=NULL;
690 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
692 n=ssl3_get_message(s,
699 if (!ok) return((int)n);
701 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
703 s->s3->tmp.reuse_message=1;
707 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
709 al=SSL_AD_UNEXPECTED_MESSAGE;
710 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
713 d=p=(unsigned char *)s->init_msg;
715 if ((sk=sk_X509_new_null()) == NULL)
717 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
724 al=SSL_AD_DECODE_ERROR;
725 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
728 for (nc=0; nc<llen; )
733 al=SSL_AD_DECODE_ERROR;
734 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
739 x=d2i_X509(NULL,&q,l);
742 al=SSL_AD_BAD_CERTIFICATE;
743 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
748 al=SSL_AD_DECODE_ERROR;
749 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
752 if (!sk_X509_push(sk,x))
754 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
762 i=ssl_verify_cert_chain(s,sk);
763 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)
764 #ifndef OPENSSL_NO_KRB5
765 && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK))
766 != (SSL_aKRB5|SSL_kKRB5)
767 #endif /* OPENSSL_NO_KRB5 */
770 al=ssl_verify_alarm_type(s->verify_result);
771 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
774 ERR_clear_error(); /* but we keep s->verify_result */
776 sc=ssl_sess_cert_new();
777 if (sc == NULL) goto err;
779 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
780 s->session->sess_cert=sc;
783 /* Inconsistency alert: cert_chain does include the peer's
784 * certificate, which we don't include in s3_srvr.c */
785 x=sk_X509_value(sk,0);
787 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
789 pkey=X509_get_pubkey(x);
791 /* VRS: allow null cert if auth == KRB5 */
792 need_cert = ((s->s3->tmp.new_cipher->algorithms
793 & (SSL_MKEY_MASK|SSL_AUTH_MASK))
794 == (SSL_aKRB5|SSL_kKRB5))? 0: 1;
797 printf("pkey,x = %p, %p\n", pkey,x);
798 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
799 printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name,
800 s->s3->tmp.new_cipher->algorithms, need_cert);
801 #endif /* KSSL_DEBUG */
803 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
807 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
808 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
812 i=ssl_cert_type(x,pkey);
813 if (need_cert && i < 0)
817 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
818 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
824 sc->peer_cert_type=i;
825 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
826 /* Why would the following ever happen?
827 * We just created sc a couple of lines ago. */
828 if (sc->peer_pkeys[i].x509 != NULL)
829 X509_free(sc->peer_pkeys[i].x509);
830 sc->peer_pkeys[i].x509=x;
831 sc->peer_key= &(sc->peer_pkeys[i]);
833 if (s->session->peer != NULL)
834 X509_free(s->session->peer);
835 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
840 sc->peer_cert_type=i;
843 if (s->session->peer != NULL)
844 X509_free(s->session->peer);
845 s->session->peer=NULL;
847 s->session->verify_result = s->verify_result;
855 ssl3_send_alert(s,SSL3_AL_FATAL,al);
860 sk_X509_pop_free(sk,X509_free);
864 static int ssl3_get_key_exchange(SSL *s)
866 #ifndef OPENSSL_NO_RSA
867 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
870 unsigned char *param,*p;
871 int al,i,j,param_len,ok;
874 #ifndef OPENSSL_NO_RSA
877 #ifndef OPENSSL_NO_DH
881 /* use same message size as in ssl3_get_certificate_request()
882 * as ServerKeyExchange message may be skipped */
883 n=ssl3_get_message(s,
884 SSL3_ST_CR_KEY_EXCH_A,
885 SSL3_ST_CR_KEY_EXCH_B,
890 if (!ok) return((int)n);
892 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
894 s->s3->tmp.reuse_message=1;
898 param=p=(unsigned char *)s->init_msg;
900 if (s->session->sess_cert != NULL)
902 #ifndef OPENSSL_NO_RSA
903 if (s->session->sess_cert->peer_rsa_tmp != NULL)
905 RSA_free(s->session->sess_cert->peer_rsa_tmp);
906 s->session->sess_cert->peer_rsa_tmp=NULL;
909 #ifndef OPENSSL_NO_DH
910 if (s->session->sess_cert->peer_dh_tmp)
912 DH_free(s->session->sess_cert->peer_dh_tmp);
913 s->session->sess_cert->peer_dh_tmp=NULL;
919 s->session->sess_cert=ssl_sess_cert_new();
923 alg=s->s3->tmp.new_cipher->algorithms;
924 EVP_MD_CTX_init(&md_ctx);
926 #ifndef OPENSSL_NO_RSA
929 if ((rsa=RSA_new()) == NULL)
931 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
938 al=SSL_AD_DECODE_ERROR;
939 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
942 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
944 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
953 al=SSL_AD_DECODE_ERROR;
954 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
957 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
959 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
965 /* this should be because we are using an export cipher */
967 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
970 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
973 s->session->sess_cert->peer_rsa_tmp=rsa;
976 #else /* OPENSSL_NO_RSA */
980 #ifndef OPENSSL_NO_DH
981 else if (alg & SSL_kEDH)
983 if ((dh=DH_new()) == NULL)
985 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
992 al=SSL_AD_DECODE_ERROR;
993 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
996 if (!(dh->p=BN_bin2bn(p,i,NULL)))
998 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1007 al=SSL_AD_DECODE_ERROR;
1008 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1011 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1013 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1022 al=SSL_AD_DECODE_ERROR;
1023 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1026 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1028 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1034 #ifndef OPENSSL_NO_RSA
1036 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1041 #ifndef OPENSSL_NO_DSA
1042 else if (alg & SSL_aDSS)
1043 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1045 /* else anonymous DH, so no certificate or pkey. */
1047 s->session->sess_cert->peer_dh_tmp=dh;
1050 else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
1052 al=SSL_AD_ILLEGAL_PARAMETER;
1053 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1056 #endif /* !OPENSSL_NO_DH */
1059 al=SSL_AD_HANDSHAKE_FAILURE;
1060 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1065 /* p points to the next byte, there are 'n' bytes left */
1068 /* if it was signed, check the signature */
1073 j=EVP_PKEY_size(pkey);
1075 if ((i != n) || (n > j) || (n <= 0))
1077 /* wrong packet length */
1078 al=SSL_AD_DECODE_ERROR;
1079 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1083 #ifndef OPENSSL_NO_RSA
1084 if (pkey->type == EVP_PKEY_RSA)
1090 for (num=2; num > 0; num--)
1092 EVP_DigestInit_ex(&md_ctx,(num == 2)
1093 ?s->ctx->md5:s->ctx->sha1, NULL);
1094 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1095 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1096 EVP_DigestUpdate(&md_ctx,param,param_len);
1097 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1101 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1105 al=SSL_AD_DECRYPT_ERROR;
1106 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1112 al=SSL_AD_DECRYPT_ERROR;
1113 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1119 #ifndef OPENSSL_NO_DSA
1120 if (pkey->type == EVP_PKEY_DSA)
1123 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1124 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1125 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1126 EVP_VerifyUpdate(&md_ctx,param,param_len);
1127 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1130 al=SSL_AD_DECRYPT_ERROR;
1131 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1138 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1144 /* still data left over */
1145 if (!(alg & SSL_aNULL))
1147 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1152 al=SSL_AD_DECODE_ERROR;
1153 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1157 EVP_PKEY_free(pkey);
1158 EVP_MD_CTX_cleanup(&md_ctx);
1161 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1163 EVP_PKEY_free(pkey);
1164 #ifndef OPENSSL_NO_RSA
1168 #ifndef OPENSSL_NO_DH
1172 EVP_MD_CTX_cleanup(&md_ctx);
1176 static int ssl3_get_certificate_request(SSL *s)
1179 unsigned long n,nc,l;
1180 unsigned int llen,ctype_num,i;
1182 unsigned char *p,*d,*q;
1183 STACK_OF(X509_NAME) *ca_sk=NULL;
1185 n=ssl3_get_message(s,
1186 SSL3_ST_CR_CERT_REQ_A,
1187 SSL3_ST_CR_CERT_REQ_B,
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_msg;
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,ERR_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; */
1433 krb5_data *enc_ticket;
1434 krb5_data authenticator, *authp = NULL;
1435 EVP_CIPHER_CTX ciph_ctx;
1436 EVP_CIPHER *enc = NULL;
1437 unsigned char iv[EVP_MAX_IV_LENGTH];
1438 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1439 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1440 + EVP_MAX_IV_LENGTH];
1441 int padl, outl = sizeof(epms);
1444 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1446 #endif /* KSSL_DEBUG */
1450 if (KRB5SENDAUTH) authp = &authenticator;
1451 #endif /* KRB5SENDAUTH */
1453 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
1455 enc = kssl_map_enc(kssl_ctx->enctype);
1460 printf("kssl_cget_tkt rtn %d\n", krb5rc);
1461 if (krb5rc && kssl_err.text)
1462 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
1464 #endif /* KSSL_DEBUG */
1468 ssl3_send_alert(s,SSL3_AL_FATAL,
1469 SSL_AD_HANDSHAKE_FAILURE);
1470 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1475 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
1476 ** in place of RFC 2712 KerberosWrapper, as in:
1478 ** Send ticket (copy to *p, set n = length)
1479 ** n = krb5_ap_req.length;
1480 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1481 ** if (krb5_ap_req.data)
1482 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1484 ** Now using real RFC 2712 KerberosWrapper
1485 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
1486 ** Note: 2712 "opaque" types are here replaced
1487 ** with a 2-byte length followed by the value.
1489 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
1490 ** Where "xx xx" = length bytes. Shown here with
1491 ** optional authenticator omitted.
1494 /* KerberosWrapper.Ticket */
1495 s2n(enc_ticket->length,p);
1496 memcpy(p, enc_ticket->data, enc_ticket->length);
1497 p+= enc_ticket->length;
1498 n = enc_ticket->length + 2;
1500 /* KerberosWrapper.Authenticator */
1501 if (authp && authp->length)
1503 s2n(authp->length,p);
1504 memcpy(p, authp->data, authp->length);
1506 n+= authp->length + 2;
1514 s2n(0,p);/* null authenticator length */
1518 if (RAND_bytes(tmp_buf,SSL_MAX_MASTER_KEY_LENGTH) <= 0)
1521 /* 20010420 VRS. Tried it this way; failed.
1522 ** EVP_EncryptInit(&ciph_ctx,enc, NULL,NULL);
1523 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
1524 ** kssl_ctx->length);
1525 ** EVP_EncryptInit(&ciph_ctx,NULL, key,iv);
1528 memset(iv, 0, EVP_MAX_IV_LENGTH); /* per RFC 1510 */
1529 EVP_EncryptInit(&ciph_ctx,enc, kssl_ctx->key,iv);
1530 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
1531 SSL_MAX_MASTER_KEY_LENGTH);
1532 EVP_EncryptFinal(&ciph_ctx,&(epms[outl]),&padl);
1534 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
1536 /* KerberosWrapper.EncryptedPreMasterSecret */
1538 memcpy(p, epms, outl);
1542 s->session->master_key_length=
1543 s->method->ssl3_enc->generate_master_secret(s,
1544 s->session->master_key,
1545 tmp_buf, SSL_MAX_MASTER_KEY_LENGTH);
1547 memset(tmp_buf, 0, SSL_MAX_MASTER_KEY_LENGTH);
1548 memset(epms, 0, outl);
1551 #ifndef OPENSSL_NO_DH
1552 else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1554 DH *dh_srvr,*dh_clnt;
1556 if (s->session->sess_cert->peer_dh_tmp != NULL)
1557 dh_srvr=s->session->sess_cert->peer_dh_tmp;
1560 /* we get them from the cert */
1561 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1562 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
1566 /* generate a new random key */
1567 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
1569 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1572 if (!DH_generate_key(dh_clnt))
1574 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1578 /* use the 'p' output buffer for the DH key, but
1579 * make sure to clear it out afterwards */
1581 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
1585 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1589 /* generate master key from the result */
1590 s->session->master_key_length=
1591 s->method->ssl3_enc->generate_master_secret(s,
1592 s->session->master_key,p,n);
1596 /* send off the data */
1597 n=BN_num_bytes(dh_clnt->pub_key);
1599 BN_bn2bin(dh_clnt->pub_key,p);
1604 /* perhaps clean things up a bit EAY EAY EAY EAY*/
1609 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1610 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1614 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
1617 s->state=SSL3_ST_CW_KEY_EXCH_B;
1618 /* number of bytes to write */
1623 /* SSL3_ST_CW_KEY_EXCH_B */
1624 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1629 static int ssl3_send_client_verify(SSL *s)
1631 unsigned char *p,*d;
1632 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
1634 #ifndef OPENSSL_NO_RSA
1638 #ifndef OPENSSL_NO_DSA
1642 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
1644 d=(unsigned char *)s->init_buf->data;
1646 pkey=s->cert->key->privatekey;
1648 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
1649 &(data[MD5_DIGEST_LENGTH]));
1651 #ifndef OPENSSL_NO_RSA
1652 if (pkey->type == EVP_PKEY_RSA)
1654 s->method->ssl3_enc->cert_verify_mac(s,
1655 &(s->s3->finish_dgst1),&(data[0]));
1656 if (RSA_sign(NID_md5_sha1, data,
1657 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
1658 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
1660 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
1668 #ifndef OPENSSL_NO_DSA
1669 if (pkey->type == EVP_PKEY_DSA)
1671 if (!DSA_sign(pkey->save_type,
1672 &(data[MD5_DIGEST_LENGTH]),
1673 SHA_DIGEST_LENGTH,&(p[2]),
1674 (unsigned int *)&j,pkey->pkey.dsa))
1676 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
1685 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
1688 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
1691 s->init_num=(int)n+4;
1694 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1699 static int ssl3_send_client_certificate(SSL *s)
1702 EVP_PKEY *pkey=NULL;
1706 if (s->state == SSL3_ST_CW_CERT_A)
1708 if ((s->cert == NULL) ||
1709 (s->cert->key->x509 == NULL) ||
1710 (s->cert->key->privatekey == NULL))
1711 s->state=SSL3_ST_CW_CERT_B;
1713 s->state=SSL3_ST_CW_CERT_C;
1716 /* We need to get a client cert */
1717 if (s->state == SSL3_ST_CW_CERT_B)
1719 /* If we get an error, we need to
1720 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
1721 * We then get retied later */
1723 if (s->ctx->client_cert_cb != NULL)
1724 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
1727 s->rwstate=SSL_X509_LOOKUP;
1730 s->rwstate=SSL_NOTHING;
1731 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
1733 s->state=SSL3_ST_CW_CERT_B;
1734 if ( !SSL_use_certificate(s,x509) ||
1735 !SSL_use_PrivateKey(s,pkey))
1741 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
1744 if (x509 != NULL) X509_free(x509);
1745 if (pkey != NULL) EVP_PKEY_free(pkey);
1748 if (s->version == SSL3_VERSION)
1750 s->s3->tmp.cert_req=0;
1751 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
1756 s->s3->tmp.cert_req=2;
1760 /* Ok, we have a cert */
1761 s->state=SSL3_ST_CW_CERT_C;
1764 if (s->state == SSL3_ST_CW_CERT_C)
1766 s->state=SSL3_ST_CW_CERT_D;
1767 l=ssl3_output_cert_chain(s,
1768 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
1772 /* SSL3_ST_CW_CERT_D */
1773 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1776 #define has_bits(i,m) (((i)&(m)) == (m))
1778 static int ssl3_check_cert_and_algorithm(SSL *s)
1782 EVP_PKEY *pkey=NULL;
1784 #ifndef OPENSSL_NO_RSA
1787 #ifndef OPENSSL_NO_DH
1791 sc=s->session->sess_cert;
1795 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
1799 algs=s->s3->tmp.new_cipher->algorithms;
1801 /* we don't have a certificate */
1802 if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5))
1805 #ifndef OPENSSL_NO_RSA
1806 rsa=s->session->sess_cert->peer_rsa_tmp;
1808 #ifndef OPENSSL_NO_DH
1809 dh=s->session->sess_cert->peer_dh_tmp;
1812 /* This is the passed certificate */
1814 idx=sc->peer_cert_type;
1815 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
1816 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
1817 EVP_PKEY_free(pkey);
1820 /* Check that we have a certificate if we require one */
1821 if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
1823 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
1826 #ifndef OPENSSL_NO_DSA
1827 else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
1829 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
1833 #ifndef OPENSSL_NO_RSA
1834 if ((algs & SSL_kRSA) &&
1835 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
1837 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
1841 #ifndef OPENSSL_NO_DH
1842 if ((algs & SSL_kEDH) &&
1843 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
1845 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
1848 else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
1850 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
1853 #ifndef OPENSSL_NO_DSA
1854 else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
1856 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
1862 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
1864 #ifndef OPENSSL_NO_RSA
1865 if (algs & SSL_kRSA)
1868 || RSA_size(rsa) > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
1870 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
1876 #ifndef OPENSSL_NO_DH
1877 if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1880 || DH_size(dh) > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
1882 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
1889 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
1895 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);