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 <openssl/buffer.h>
114 #include <openssl/rand.h>
115 #include <openssl/objects.h>
116 #include <openssl/evp.h>
117 #include "ssl_locl.h"
118 #include "kssl_lcl.h"
119 #include <openssl/md5.h>
121 static SSL_METHOD *ssl3_get_client_method(int ver);
122 static int ssl3_client_hello(SSL *s);
123 static int ssl3_get_server_hello(SSL *s);
124 static int ssl3_get_certificate_request(SSL *s);
125 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
126 static int ssl3_get_server_done(SSL *s);
127 static int ssl3_send_client_verify(SSL *s);
128 static int ssl3_send_client_certificate(SSL *s);
129 static int ssl3_send_client_key_exchange(SSL *s);
130 static int ssl3_get_key_exchange(SSL *s);
131 static int ssl3_get_server_certificate(SSL *s);
132 static int ssl3_check_cert_and_algorithm(SSL *s);
133 static SSL_METHOD *ssl3_get_client_method(int ver)
135 if (ver == SSL3_VERSION)
136 return(SSLv3_client_method());
141 SSL_METHOD *SSLv3_client_method(void)
144 static SSL_METHOD SSLv3_client_data;
149 memcpy((char *)&SSLv3_client_data,(char *)sslv3_base_method(),
151 SSLv3_client_data.ssl_connect=ssl3_connect;
152 SSLv3_client_data.get_ssl_method=ssl3_get_client_method;
154 return(&SSLv3_client_data);
157 int ssl3_connect(SSL *s)
160 unsigned long Time=time(NULL),l;
162 void (*cb)(const SSL *ssl,int type,int val)=NULL;
164 int new_state,state,skip=0;;
166 RAND_add(&Time,sizeof(Time),0);
170 if (s->info_callback != NULL)
172 else if (s->ctx->info_callback != NULL)
173 cb=s->ctx->info_callback;
176 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
184 case SSL_ST_RENEGOTIATE:
186 s->state=SSL_ST_CONNECT;
187 s->ctx->stats.sess_connect_renegotiate++;
191 case SSL_ST_BEFORE|SSL_ST_CONNECT:
192 case SSL_ST_OK|SSL_ST_CONNECT:
195 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
197 if ((s->version & 0xff00 ) != 0x0300)
199 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
204 /* s->version=SSL3_VERSION; */
205 s->type=SSL_ST_CONNECT;
207 if (s->init_buf == NULL)
209 if ((buf=BUF_MEM_new()) == NULL)
214 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
222 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
224 /* setup buffing BIO */
225 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
227 /* don't push the buffering BIO quite yet */
229 ssl3_init_finished_mac(s);
231 s->state=SSL3_ST_CW_CLNT_HELLO_A;
232 s->ctx->stats.sess_connect++;
236 case SSL3_ST_CW_CLNT_HELLO_A:
237 case SSL3_ST_CW_CLNT_HELLO_B:
240 ret=ssl3_client_hello(s);
241 if (ret <= 0) goto end;
242 s->state=SSL3_ST_CR_SRVR_HELLO_A;
245 /* turn on buffering for the next lot of output */
246 if (s->bbio != s->wbio)
247 s->wbio=BIO_push(s->bbio,s->wbio);
251 case SSL3_ST_CR_SRVR_HELLO_A:
252 case SSL3_ST_CR_SRVR_HELLO_B:
253 ret=ssl3_get_server_hello(s);
254 if (ret <= 0) goto end;
256 s->state=SSL3_ST_CR_FINISHED_A;
258 s->state=SSL3_ST_CR_CERT_A;
262 case SSL3_ST_CR_CERT_A:
263 case SSL3_ST_CR_CERT_B:
264 /* Check if it is anon DH */
265 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL))
267 ret=ssl3_get_server_certificate(s);
268 if (ret <= 0) goto end;
272 s->state=SSL3_ST_CR_KEY_EXCH_A;
276 case SSL3_ST_CR_KEY_EXCH_A:
277 case SSL3_ST_CR_KEY_EXCH_B:
278 ret=ssl3_get_key_exchange(s);
279 if (ret <= 0) goto end;
280 s->state=SSL3_ST_CR_CERT_REQ_A;
283 /* at this point we check that we have the
284 * required stuff from the server */
285 if (!ssl3_check_cert_and_algorithm(s))
292 case SSL3_ST_CR_CERT_REQ_A:
293 case SSL3_ST_CR_CERT_REQ_B:
294 ret=ssl3_get_certificate_request(s);
295 if (ret <= 0) goto end;
296 s->state=SSL3_ST_CR_SRVR_DONE_A;
300 case SSL3_ST_CR_SRVR_DONE_A:
301 case SSL3_ST_CR_SRVR_DONE_B:
302 ret=ssl3_get_server_done(s);
303 if (ret <= 0) goto end;
304 if (s->s3->tmp.cert_req)
305 s->state=SSL3_ST_CW_CERT_A;
307 s->state=SSL3_ST_CW_KEY_EXCH_A;
312 case SSL3_ST_CW_CERT_A:
313 case SSL3_ST_CW_CERT_B:
314 case SSL3_ST_CW_CERT_C:
315 case SSL3_ST_CW_CERT_D:
316 ret=ssl3_send_client_certificate(s);
317 if (ret <= 0) goto end;
318 s->state=SSL3_ST_CW_KEY_EXCH_A;
322 case SSL3_ST_CW_KEY_EXCH_A:
323 case SSL3_ST_CW_KEY_EXCH_B:
324 ret=ssl3_send_client_key_exchange(s);
325 if (ret <= 0) goto end;
326 l=s->s3->tmp.new_cipher->algorithms;
327 /* EAY EAY EAY need to check for DH fix cert
329 /* For TLS, cert_req is set to 2, so a cert chain
330 * of nothing is sent, but no verify packet is sent */
331 if (s->s3->tmp.cert_req == 1)
333 s->state=SSL3_ST_CW_CERT_VRFY_A;
337 s->state=SSL3_ST_CW_CHANGE_A;
338 s->s3->change_cipher_spec=0;
344 case SSL3_ST_CW_CERT_VRFY_A:
345 case SSL3_ST_CW_CERT_VRFY_B:
346 ret=ssl3_send_client_verify(s);
347 if (ret <= 0) goto end;
348 s->state=SSL3_ST_CW_CHANGE_A;
350 s->s3->change_cipher_spec=0;
353 case SSL3_ST_CW_CHANGE_A:
354 case SSL3_ST_CW_CHANGE_B:
355 ret=ssl3_send_change_cipher_spec(s,
356 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
357 if (ret <= 0) goto end;
358 s->state=SSL3_ST_CW_FINISHED_A;
361 s->session->cipher=s->s3->tmp.new_cipher;
362 if (s->s3->tmp.new_compression == NULL)
363 s->session->compress_meth=0;
365 s->session->compress_meth=
366 s->s3->tmp.new_compression->id;
367 if (!s->method->ssl3_enc->setup_key_block(s))
373 if (!s->method->ssl3_enc->change_cipher_state(s,
374 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
382 case SSL3_ST_CW_FINISHED_A:
383 case SSL3_ST_CW_FINISHED_B:
384 ret=ssl3_send_finished(s,
385 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
386 s->method->ssl3_enc->client_finished_label,
387 s->method->ssl3_enc->client_finished_label_len);
388 if (ret <= 0) goto end;
389 s->state=SSL3_ST_CW_FLUSH;
392 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
395 s->s3->tmp.next_state=SSL_ST_OK;
396 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
399 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
400 s->s3->delay_buf_pop_ret=0;
405 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
410 case SSL3_ST_CR_FINISHED_A:
411 case SSL3_ST_CR_FINISHED_B:
413 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
414 SSL3_ST_CR_FINISHED_B);
415 if (ret <= 0) goto end;
418 s->state=SSL3_ST_CW_CHANGE_A;
424 case SSL3_ST_CW_FLUSH:
425 /* number of bytes to be flushed */
426 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
429 s->rwstate=SSL_WRITING;
430 num1=BIO_flush(s->wbio);
431 if (num1 <= 0) { ret= -1; goto end; }
432 s->rwstate=SSL_NOTHING;
435 s->state=s->s3->tmp.next_state;
439 /* clean a few things up */
440 ssl3_cleanup_key_block(s);
442 if (s->init_buf != NULL)
444 BUF_MEM_free(s->init_buf);
448 /* If we are not 'joining' the last two packets,
449 * remove the buffering now */
450 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
451 ssl_free_wbio_buffer(s);
452 /* else do it later in ssl3_write */
457 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
458 if (s->hit) s->ctx->stats.sess_hit++;
462 s->handshake_func=ssl3_connect;
463 s->ctx->stats.sess_connect_good++;
465 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
471 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
477 /* did we do anything */
478 if (!s->s3->tmp.reuse_message && !skip)
482 if ((ret=BIO_flush(s->wbio)) <= 0)
486 if ((cb != NULL) && (s->state != state))
490 cb(s,SSL_CB_CONNECT_LOOP,1);
499 cb(s,SSL_CB_CONNECT_EXIT,ret);
504 static int ssl3_client_hello(SSL *s)
509 unsigned long Time,l;
512 buf=(unsigned char *)s->init_buf->data;
513 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
515 if ((s->session == NULL) ||
516 (s->session->ssl_version != s->version) ||
517 (s->session->not_resumable))
519 if (!ssl_get_new_session(s,0))
522 /* else use the pre-loaded session */
524 p=s->s3->client_random;
525 Time=time(NULL); /* Time */
527 RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-sizeof(Time));
529 /* Do the message type and length last */
532 *(p++)=s->version>>8;
533 *(p++)=s->version&0xff;
534 s->client_version=s->version;
537 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
544 i=s->session->session_id_length;
548 memcpy(p,s->session->session_id,i);
552 /* Ciphers supported */
553 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]));
556 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
563 if (s->ctx->comp_methods == NULL)
566 j=sk_SSL_COMP_num(s->ctx->comp_methods);
570 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
573 *(p++)=0; /* Add the NULL method */
577 *(d++)=SSL3_MT_CLIENT_HELLO;
580 s->state=SSL3_ST_CW_CLNT_HELLO_B;
581 /* number of bytes to write */
586 /* SSL3_ST_CW_CLNT_HELLO_B */
587 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
592 static int ssl3_get_server_hello(SSL *s)
594 STACK_OF(SSL_CIPHER) *sk;
602 n=ssl3_get_message(s,
603 SSL3_ST_CR_SRVR_HELLO_A,
604 SSL3_ST_CR_SRVR_HELLO_B,
605 SSL3_MT_SERVER_HELLO,
609 if (!ok) return((int)n);
610 d=p=(unsigned char *)s->init_msg;
612 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
614 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
615 s->version=(s->version&0xff00)|p[1];
616 al=SSL_AD_PROTOCOL_VERSION;
621 /* load the server hello data */
622 /* load the server random */
623 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
626 /* get the session-id */
629 if ((j != 0) && (j != SSL3_SESSION_ID_SIZE))
631 /* SSLref returns 16 :-( */
632 if (j < SSL2_SSL_SESSION_ID_LENGTH)
634 al=SSL_AD_ILLEGAL_PARAMETER;
635 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_SHORT);
639 if (j != 0 && j == s->session->session_id_length
640 && memcmp(p,s->session->session_id,j) == 0)
642 if(s->sid_ctx_length != s->session->sid_ctx_length
643 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
645 al=SSL_AD_ILLEGAL_PARAMETER;
646 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
651 else /* a miss or crap from the other end */
653 /* If we were trying for session-id reuse, make a new
654 * SSL_SESSION so we don't stuff up other people */
656 if (s->session->session_id_length > 0)
658 if (!ssl_get_new_session(s,0))
660 al=SSL_AD_INTERNAL_ERROR;
664 s->session->session_id_length=j;
665 memcpy(s->session->session_id,p,j); /* j could be 0 */
668 c=ssl_get_cipher_by_char(s,p);
672 al=SSL_AD_ILLEGAL_PARAMETER;
673 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
676 p+=ssl_put_cipher_by_char(s,NULL,NULL);
678 sk=ssl_get_ciphers_by_id(s);
679 i=sk_SSL_CIPHER_find(sk,c);
682 /* we did not say we would use this cipher */
683 al=SSL_AD_ILLEGAL_PARAMETER;
684 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
688 if (s->hit && (s->session->cipher != c))
691 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
693 al=SSL_AD_ILLEGAL_PARAMETER;
694 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
698 s->s3->tmp.new_cipher=c;
700 /* lets get the compression algorithm */
706 comp=ssl3_comp_find(s->ctx->comp_methods,j);
708 if ((j != 0) && (comp == NULL))
710 al=SSL_AD_ILLEGAL_PARAMETER;
711 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
716 s->s3->tmp.new_compression=comp;
721 /* wrong packet length */
722 al=SSL_AD_DECODE_ERROR;
723 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
729 ssl3_send_alert(s,SSL3_AL_FATAL,al);
734 static int ssl3_get_server_certificate(SSL *s)
737 unsigned long n,nc,llen,l;
739 unsigned char *p,*d,*q;
740 STACK_OF(X509) *sk=NULL;
743 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
745 n=ssl3_get_message(s,
752 if (!ok) return((int)n);
754 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
756 s->s3->tmp.reuse_message=1;
760 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
762 al=SSL_AD_UNEXPECTED_MESSAGE;
763 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
766 d=p=(unsigned char *)s->init_msg;
768 if ((sk=sk_X509_new_null()) == NULL)
770 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
777 al=SSL_AD_DECODE_ERROR;
778 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
781 for (nc=0; nc<llen; )
786 al=SSL_AD_DECODE_ERROR;
787 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
792 x=d2i_X509(NULL,&q,l);
795 al=SSL_AD_BAD_CERTIFICATE;
796 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
801 al=SSL_AD_DECODE_ERROR;
802 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
805 if (!sk_X509_push(sk,x))
807 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
815 i=ssl_verify_cert_chain(s,sk);
816 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)
817 #ifndef OPENSSL_NO_KRB5
818 && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK))
819 != (SSL_aKRB5|SSL_kKRB5)
820 #endif /* OPENSSL_NO_KRB5 */
823 al=ssl_verify_alarm_type(s->verify_result);
824 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
827 ERR_clear_error(); /* but we keep s->verify_result */
829 sc=ssl_sess_cert_new();
830 if (sc == NULL) goto err;
832 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
833 s->session->sess_cert=sc;
836 /* Inconsistency alert: cert_chain does include the peer's
837 * certificate, which we don't include in s3_srvr.c */
838 x=sk_X509_value(sk,0);
840 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
842 pkey=X509_get_pubkey(x);
844 /* VRS: allow null cert if auth == KRB5 */
845 need_cert = ((s->s3->tmp.new_cipher->algorithms
846 & (SSL_MKEY_MASK|SSL_AUTH_MASK))
847 == (SSL_aKRB5|SSL_kKRB5))? 0: 1;
850 printf("pkey,x = %p, %p\n", pkey,x);
851 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
852 printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name,
853 s->s3->tmp.new_cipher->algorithms, need_cert);
854 #endif /* KSSL_DEBUG */
856 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
860 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
861 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
865 i=ssl_cert_type(x,pkey);
866 if (need_cert && i < 0)
870 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
871 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
877 sc->peer_cert_type=i;
878 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
879 /* Why would the following ever happen?
880 * We just created sc a couple of lines ago. */
881 if (sc->peer_pkeys[i].x509 != NULL)
882 X509_free(sc->peer_pkeys[i].x509);
883 sc->peer_pkeys[i].x509=x;
884 sc->peer_key= &(sc->peer_pkeys[i]);
886 if (s->session->peer != NULL)
887 X509_free(s->session->peer);
888 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
893 sc->peer_cert_type=i;
896 if (s->session->peer != NULL)
897 X509_free(s->session->peer);
898 s->session->peer=NULL;
900 s->session->verify_result = s->verify_result;
908 ssl3_send_alert(s,SSL3_AL_FATAL,al);
913 sk_X509_pop_free(sk,X509_free);
917 static int ssl3_get_key_exchange(SSL *s)
919 #ifndef OPENSSL_NO_RSA
920 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
923 unsigned char *param,*p;
924 int al,i,j,param_len,ok;
927 #ifndef OPENSSL_NO_RSA
930 #ifndef OPENSSL_NO_DH
934 /* use same message size as in ssl3_get_certificate_request()
935 * as ServerKeyExchange message may be skipped */
936 n=ssl3_get_message(s,
937 SSL3_ST_CR_KEY_EXCH_A,
938 SSL3_ST_CR_KEY_EXCH_B,
943 if (!ok) return((int)n);
945 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
947 s->s3->tmp.reuse_message=1;
951 param=p=(unsigned char *)s->init_msg;
953 if (s->session->sess_cert != NULL)
955 #ifndef OPENSSL_NO_RSA
956 if (s->session->sess_cert->peer_rsa_tmp != NULL)
958 RSA_free(s->session->sess_cert->peer_rsa_tmp);
959 s->session->sess_cert->peer_rsa_tmp=NULL;
962 #ifndef OPENSSL_NO_DH
963 if (s->session->sess_cert->peer_dh_tmp)
965 DH_free(s->session->sess_cert->peer_dh_tmp);
966 s->session->sess_cert->peer_dh_tmp=NULL;
972 s->session->sess_cert=ssl_sess_cert_new();
976 alg=s->s3->tmp.new_cipher->algorithms;
977 EVP_MD_CTX_init(&md_ctx);
979 #ifndef OPENSSL_NO_RSA
982 if ((rsa=RSA_new()) == NULL)
984 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
991 al=SSL_AD_DECODE_ERROR;
992 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
995 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
997 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1006 al=SSL_AD_DECODE_ERROR;
1007 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1010 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1012 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1018 /* this should be because we are using an export cipher */
1020 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1023 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1026 s->session->sess_cert->peer_rsa_tmp=rsa;
1029 #else /* OPENSSL_NO_RSA */
1033 #ifndef OPENSSL_NO_DH
1034 else if (alg & SSL_kEDH)
1036 if ((dh=DH_new()) == NULL)
1038 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1045 al=SSL_AD_DECODE_ERROR;
1046 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1049 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1051 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1060 al=SSL_AD_DECODE_ERROR;
1061 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1064 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1066 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1075 al=SSL_AD_DECODE_ERROR;
1076 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1079 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1081 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1087 #ifndef OPENSSL_NO_RSA
1089 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1094 #ifndef OPENSSL_NO_DSA
1095 else if (alg & SSL_aDSS)
1096 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1098 /* else anonymous DH, so no certificate or pkey. */
1100 s->session->sess_cert->peer_dh_tmp=dh;
1103 else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
1105 al=SSL_AD_ILLEGAL_PARAMETER;
1106 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1109 #endif /* !OPENSSL_NO_DH */
1112 al=SSL_AD_HANDSHAKE_FAILURE;
1113 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1118 /* p points to the next byte, there are 'n' bytes left */
1121 /* if it was signed, check the signature */
1126 j=EVP_PKEY_size(pkey);
1128 if ((i != n) || (n > j) || (n <= 0))
1130 /* wrong packet length */
1131 al=SSL_AD_DECODE_ERROR;
1132 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1136 #ifndef OPENSSL_NO_RSA
1137 if (pkey->type == EVP_PKEY_RSA)
1143 for (num=2; num > 0; num--)
1145 EVP_DigestInit_ex(&md_ctx,(num == 2)
1146 ?s->ctx->md5:s->ctx->sha1, NULL);
1147 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1148 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1149 EVP_DigestUpdate(&md_ctx,param,param_len);
1150 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1154 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1158 al=SSL_AD_DECRYPT_ERROR;
1159 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1165 al=SSL_AD_DECRYPT_ERROR;
1166 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1172 #ifndef OPENSSL_NO_DSA
1173 if (pkey->type == EVP_PKEY_DSA)
1176 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1177 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1178 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1179 EVP_VerifyUpdate(&md_ctx,param,param_len);
1180 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1183 al=SSL_AD_DECRYPT_ERROR;
1184 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1191 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1197 /* still data left over */
1198 if (!(alg & SSL_aNULL))
1200 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1205 al=SSL_AD_DECODE_ERROR;
1206 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1210 EVP_PKEY_free(pkey);
1211 EVP_MD_CTX_cleanup(&md_ctx);
1214 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1216 EVP_PKEY_free(pkey);
1217 #ifndef OPENSSL_NO_RSA
1221 #ifndef OPENSSL_NO_DH
1225 EVP_MD_CTX_cleanup(&md_ctx);
1229 static int ssl3_get_certificate_request(SSL *s)
1232 unsigned long n,nc,l;
1233 unsigned int llen,ctype_num,i;
1235 unsigned char *p,*d,*q;
1236 STACK_OF(X509_NAME) *ca_sk=NULL;
1238 n=ssl3_get_message(s,
1239 SSL3_ST_CR_CERT_REQ_A,
1240 SSL3_ST_CR_CERT_REQ_B,
1245 if (!ok) return((int)n);
1247 s->s3->tmp.cert_req=0;
1249 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1251 s->s3->tmp.reuse_message=1;
1255 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1257 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1258 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1262 /* TLS does not like anon-DH with client cert */
1263 if (s->version > SSL3_VERSION)
1265 l=s->s3->tmp.new_cipher->algorithms;
1268 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1269 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1274 d=p=(unsigned char *)s->init_msg;
1276 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1278 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1282 /* get the certificate types */
1284 if (ctype_num > SSL3_CT_NUMBER)
1285 ctype_num=SSL3_CT_NUMBER;
1286 for (i=0; i<ctype_num; i++)
1287 s->s3->tmp.ctype[i]= p[i];
1290 /* get the CA RDNs */
1295 out=fopen("/tmp/vsign.der","w");
1296 fwrite(p,1,llen,out);
1301 if ((llen+ctype_num+2+1) != n)
1303 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1304 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1308 for (nc=0; nc<llen; )
1311 if ((l+nc+2) > llen)
1313 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1314 goto cont; /* netscape bugs */
1315 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1316 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1322 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1324 /* If netscape tolerance is on, ignore errors */
1325 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1329 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1330 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1337 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1338 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1341 if (!sk_X509_NAME_push(ca_sk,xn))
1343 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1357 /* we should setup a certificate to return.... */
1358 s->s3->tmp.cert_req=1;
1359 s->s3->tmp.ctype_num=ctype_num;
1360 if (s->s3->tmp.ca_names != NULL)
1361 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1362 s->s3->tmp.ca_names=ca_sk;
1367 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1371 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1373 return(X509_NAME_cmp(*a,*b));
1376 static int ssl3_get_server_done(SSL *s)
1381 n=ssl3_get_message(s,
1382 SSL3_ST_CR_SRVR_DONE_A,
1383 SSL3_ST_CR_SRVR_DONE_B,
1384 SSL3_MT_SERVER_DONE,
1385 30, /* should be very small, like 0 :-) */
1388 if (!ok) return((int)n);
1391 /* should contain no data */
1392 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1393 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1400 static int ssl3_send_client_key_exchange(SSL *s)
1402 unsigned char *p,*d;
1405 #ifndef OPENSSL_NO_RSA
1407 EVP_PKEY *pkey=NULL;
1409 #ifndef OPENSSL_NO_KRB5
1411 #endif /* OPENSSL_NO_KRB5 */
1413 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1415 d=(unsigned char *)s->init_buf->data;
1418 l=s->s3->tmp.new_cipher->algorithms;
1420 /* Fool emacs indentation */
1422 #ifndef OPENSSL_NO_RSA
1423 else if (l & SSL_kRSA)
1426 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1428 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1429 rsa=s->session->sess_cert->peer_rsa_tmp;
1432 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1433 if ((pkey == NULL) ||
1434 (pkey->type != EVP_PKEY_RSA) ||
1435 (pkey->pkey.rsa == NULL))
1437 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1441 EVP_PKEY_free(pkey);
1444 tmp_buf[0]=s->client_version>>8;
1445 tmp_buf[1]=s->client_version&0xff;
1446 if (RAND_bytes(&(tmp_buf[2]),SSL_MAX_MASTER_KEY_LENGTH-2) <= 0)
1449 s->session->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
1452 /* Fix buf for TLS and beyond */
1453 if (s->version > SSL3_VERSION)
1455 n=RSA_public_encrypt(SSL_MAX_MASTER_KEY_LENGTH,
1456 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1458 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1459 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1463 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1467 /* Fix buf for TLS and beyond */
1468 if (s->version > SSL3_VERSION)
1474 s->session->master_key_length=
1475 s->method->ssl3_enc->generate_master_secret(s,
1476 s->session->master_key,
1477 tmp_buf,SSL_MAX_MASTER_KEY_LENGTH);
1478 memset(tmp_buf,0,SSL_MAX_MASTER_KEY_LENGTH);
1481 #ifndef OPENSSL_NO_KRB5
1482 else if (l & SSL_kKRB5)
1484 krb5_error_code krb5rc;
1485 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1486 /* krb5_data krb5_ap_req; */
1487 krb5_data *enc_ticket;
1488 krb5_data authenticator, *authp = NULL;
1489 EVP_CIPHER_CTX ciph_ctx;
1490 EVP_CIPHER *enc = NULL;
1491 unsigned char iv[EVP_MAX_IV_LENGTH];
1492 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1493 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1494 + EVP_MAX_IV_LENGTH];
1495 int padl, outl = sizeof(epms);
1498 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1500 #endif /* KSSL_DEBUG */
1504 if (KRB5SENDAUTH) authp = &authenticator;
1505 #endif /* KRB5SENDAUTH */
1507 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
1509 enc = kssl_map_enc(kssl_ctx->enctype);
1514 printf("kssl_cget_tkt rtn %d\n", krb5rc);
1515 if (krb5rc && kssl_err.text)
1516 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
1518 #endif /* KSSL_DEBUG */
1522 ssl3_send_alert(s,SSL3_AL_FATAL,
1523 SSL_AD_HANDSHAKE_FAILURE);
1524 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1529 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
1530 ** in place of RFC 2712 KerberosWrapper, as in:
1532 ** Send ticket (copy to *p, set n = length)
1533 ** n = krb5_ap_req.length;
1534 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1535 ** if (krb5_ap_req.data)
1536 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1538 ** Now using real RFC 2712 KerberosWrapper
1539 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
1540 ** Note: 2712 "opaque" types are here replaced
1541 ** with a 2-byte length followed by the value.
1543 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
1544 ** Where "xx xx" = length bytes. Shown here with
1545 ** optional authenticator omitted.
1548 /* KerberosWrapper.Ticket */
1549 s2n(enc_ticket->length,p);
1550 memcpy(p, enc_ticket->data, enc_ticket->length);
1551 p+= enc_ticket->length;
1552 n = enc_ticket->length + 2;
1554 /* KerberosWrapper.Authenticator */
1555 if (authp && authp->length)
1557 s2n(authp->length,p);
1558 memcpy(p, authp->data, authp->length);
1560 n+= authp->length + 2;
1568 s2n(0,p);/* null authenticator length */
1572 if (RAND_bytes(tmp_buf,SSL_MAX_MASTER_KEY_LENGTH) <= 0)
1575 /* 20010420 VRS. Tried it this way; failed.
1576 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
1577 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
1578 ** kssl_ctx->length);
1579 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
1582 memset(iv, 0, EVP_MAX_IV_LENGTH); /* per RFC 1510 */
1583 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
1585 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
1586 SSL_MAX_MASTER_KEY_LENGTH);
1587 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
1589 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
1591 /* KerberosWrapper.EncryptedPreMasterSecret */
1593 memcpy(p, epms, outl);
1597 s->session->master_key_length=
1598 s->method->ssl3_enc->generate_master_secret(s,
1599 s->session->master_key,
1600 tmp_buf, SSL_MAX_MASTER_KEY_LENGTH);
1602 memset(tmp_buf, 0, SSL_MAX_MASTER_KEY_LENGTH);
1603 memset(epms, 0, outl);
1606 #ifndef OPENSSL_NO_DH
1607 else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1609 DH *dh_srvr,*dh_clnt;
1611 if (s->session->sess_cert->peer_dh_tmp != NULL)
1612 dh_srvr=s->session->sess_cert->peer_dh_tmp;
1615 /* we get them from the cert */
1616 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1617 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
1621 /* generate a new random key */
1622 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
1624 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1627 if (!DH_generate_key(dh_clnt))
1629 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1633 /* use the 'p' output buffer for the DH key, but
1634 * make sure to clear it out afterwards */
1636 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
1640 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1644 /* generate master key from the result */
1645 s->session->master_key_length=
1646 s->method->ssl3_enc->generate_master_secret(s,
1647 s->session->master_key,p,n);
1651 /* send off the data */
1652 n=BN_num_bytes(dh_clnt->pub_key);
1654 BN_bn2bin(dh_clnt->pub_key,p);
1659 /* perhaps clean things up a bit EAY EAY EAY EAY*/
1664 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1665 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1669 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
1672 s->state=SSL3_ST_CW_KEY_EXCH_B;
1673 /* number of bytes to write */
1678 /* SSL3_ST_CW_KEY_EXCH_B */
1679 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1684 static int ssl3_send_client_verify(SSL *s)
1686 unsigned char *p,*d;
1687 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
1689 #ifndef OPENSSL_NO_RSA
1693 #ifndef OPENSSL_NO_DSA
1697 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
1699 d=(unsigned char *)s->init_buf->data;
1701 pkey=s->cert->key->privatekey;
1703 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
1704 &(data[MD5_DIGEST_LENGTH]));
1706 #ifndef OPENSSL_NO_RSA
1707 if (pkey->type == EVP_PKEY_RSA)
1709 s->method->ssl3_enc->cert_verify_mac(s,
1710 &(s->s3->finish_dgst1),&(data[0]));
1711 if (RSA_sign(NID_md5_sha1, data,
1712 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
1713 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
1715 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
1723 #ifndef OPENSSL_NO_DSA
1724 if (pkey->type == EVP_PKEY_DSA)
1726 if (!DSA_sign(pkey->save_type,
1727 &(data[MD5_DIGEST_LENGTH]),
1728 SHA_DIGEST_LENGTH,&(p[2]),
1729 (unsigned int *)&j,pkey->pkey.dsa))
1731 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
1740 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
1743 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
1746 s->init_num=(int)n+4;
1749 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1754 static int ssl3_send_client_certificate(SSL *s)
1757 EVP_PKEY *pkey=NULL;
1761 if (s->state == SSL3_ST_CW_CERT_A)
1763 if ((s->cert == NULL) ||
1764 (s->cert->key->x509 == NULL) ||
1765 (s->cert->key->privatekey == NULL))
1766 s->state=SSL3_ST_CW_CERT_B;
1768 s->state=SSL3_ST_CW_CERT_C;
1771 /* We need to get a client cert */
1772 if (s->state == SSL3_ST_CW_CERT_B)
1774 /* If we get an error, we need to
1775 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
1776 * We then get retied later */
1778 if (s->ctx->client_cert_cb != NULL)
1779 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
1782 s->rwstate=SSL_X509_LOOKUP;
1785 s->rwstate=SSL_NOTHING;
1786 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
1788 s->state=SSL3_ST_CW_CERT_B;
1789 if ( !SSL_use_certificate(s,x509) ||
1790 !SSL_use_PrivateKey(s,pkey))
1796 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
1799 if (x509 != NULL) X509_free(x509);
1800 if (pkey != NULL) EVP_PKEY_free(pkey);
1803 if (s->version == SSL3_VERSION)
1805 s->s3->tmp.cert_req=0;
1806 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
1811 s->s3->tmp.cert_req=2;
1815 /* Ok, we have a cert */
1816 s->state=SSL3_ST_CW_CERT_C;
1819 if (s->state == SSL3_ST_CW_CERT_C)
1821 s->state=SSL3_ST_CW_CERT_D;
1822 l=ssl3_output_cert_chain(s,
1823 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
1827 /* SSL3_ST_CW_CERT_D */
1828 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1831 #define has_bits(i,m) (((i)&(m)) == (m))
1833 static int ssl3_check_cert_and_algorithm(SSL *s)
1837 EVP_PKEY *pkey=NULL;
1839 #ifndef OPENSSL_NO_RSA
1842 #ifndef OPENSSL_NO_DH
1846 sc=s->session->sess_cert;
1850 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
1854 algs=s->s3->tmp.new_cipher->algorithms;
1856 /* we don't have a certificate */
1857 if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5))
1860 #ifndef OPENSSL_NO_RSA
1861 rsa=s->session->sess_cert->peer_rsa_tmp;
1863 #ifndef OPENSSL_NO_DH
1864 dh=s->session->sess_cert->peer_dh_tmp;
1867 /* This is the passed certificate */
1869 idx=sc->peer_cert_type;
1870 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
1871 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
1872 EVP_PKEY_free(pkey);
1875 /* Check that we have a certificate if we require one */
1876 if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
1878 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
1881 #ifndef OPENSSL_NO_DSA
1882 else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
1884 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
1888 #ifndef OPENSSL_NO_RSA
1889 if ((algs & SSL_kRSA) &&
1890 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
1892 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
1896 #ifndef OPENSSL_NO_DH
1897 if ((algs & SSL_kEDH) &&
1898 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
1900 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
1903 else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
1905 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
1908 #ifndef OPENSSL_NO_DSA
1909 else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
1911 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
1917 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
1919 #ifndef OPENSSL_NO_RSA
1920 if (algs & SSL_kRSA)
1923 || RSA_size(rsa) > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
1925 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
1931 #ifndef OPENSSL_NO_DH
1932 if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1935 || DH_size(dh) > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
1937 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
1944 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
1950 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);