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 "cryptlib.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))
230 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
232 /* setup buffing BIO */
233 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
235 /* don't push the buffering BIO quite yet */
237 ssl3_init_finished_mac(s);
239 s->state=SSL3_ST_CW_CLNT_HELLO_A;
240 s->ctx->stats.sess_connect++;
244 case SSL3_ST_CW_CLNT_HELLO_A:
245 case SSL3_ST_CW_CLNT_HELLO_B:
248 ret=ssl3_client_hello(s);
249 if (ret <= 0) goto end;
250 s->state=SSL3_ST_CR_SRVR_HELLO_A;
253 /* turn on buffering for the next lot of output */
254 if (s->bbio != s->wbio)
255 s->wbio=BIO_push(s->bbio,s->wbio);
259 case SSL3_ST_CR_SRVR_HELLO_A:
260 case SSL3_ST_CR_SRVR_HELLO_B:
261 ret=ssl3_get_server_hello(s);
262 if (ret <= 0) goto end;
264 s->state=SSL3_ST_CR_FINISHED_A;
266 s->state=SSL3_ST_CR_CERT_A;
270 case SSL3_ST_CR_CERT_A:
271 case SSL3_ST_CR_CERT_B:
272 /* Check if it is anon DH */
273 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL))
275 ret=ssl3_get_server_certificate(s);
276 if (ret <= 0) goto end;
280 s->state=SSL3_ST_CR_KEY_EXCH_A;
284 case SSL3_ST_CR_KEY_EXCH_A:
285 case SSL3_ST_CR_KEY_EXCH_B:
286 ret=ssl3_get_key_exchange(s);
287 if (ret <= 0) goto end;
288 s->state=SSL3_ST_CR_CERT_REQ_A;
291 /* at this point we check that we have the
292 * required stuff from the server */
293 if (!ssl3_check_cert_and_algorithm(s))
300 case SSL3_ST_CR_CERT_REQ_A:
301 case SSL3_ST_CR_CERT_REQ_B:
302 ret=ssl3_get_certificate_request(s);
303 if (ret <= 0) goto end;
304 s->state=SSL3_ST_CR_SRVR_DONE_A;
308 case SSL3_ST_CR_SRVR_DONE_A:
309 case SSL3_ST_CR_SRVR_DONE_B:
310 ret=ssl3_get_server_done(s);
311 if (ret <= 0) goto end;
312 if (s->s3->tmp.cert_req)
313 s->state=SSL3_ST_CW_CERT_A;
315 s->state=SSL3_ST_CW_KEY_EXCH_A;
320 case SSL3_ST_CW_CERT_A:
321 case SSL3_ST_CW_CERT_B:
322 case SSL3_ST_CW_CERT_C:
323 case SSL3_ST_CW_CERT_D:
324 ret=ssl3_send_client_certificate(s);
325 if (ret <= 0) goto end;
326 s->state=SSL3_ST_CW_KEY_EXCH_A;
330 case SSL3_ST_CW_KEY_EXCH_A:
331 case SSL3_ST_CW_KEY_EXCH_B:
332 ret=ssl3_send_client_key_exchange(s);
333 if (ret <= 0) goto end;
334 l=s->s3->tmp.new_cipher->algorithms;
335 /* EAY EAY EAY need to check for DH fix cert
337 /* For TLS, cert_req is set to 2, so a cert chain
338 * of nothing is sent, but no verify packet is sent */
339 if (s->s3->tmp.cert_req == 1)
341 s->state=SSL3_ST_CW_CERT_VRFY_A;
345 s->state=SSL3_ST_CW_CHANGE_A;
346 s->s3->change_cipher_spec=0;
352 case SSL3_ST_CW_CERT_VRFY_A:
353 case SSL3_ST_CW_CERT_VRFY_B:
354 ret=ssl3_send_client_verify(s);
355 if (ret <= 0) goto end;
356 s->state=SSL3_ST_CW_CHANGE_A;
358 s->s3->change_cipher_spec=0;
361 case SSL3_ST_CW_CHANGE_A:
362 case SSL3_ST_CW_CHANGE_B:
363 ret=ssl3_send_change_cipher_spec(s,
364 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
365 if (ret <= 0) goto end;
366 s->state=SSL3_ST_CW_FINISHED_A;
369 s->session->cipher=s->s3->tmp.new_cipher;
370 if (s->s3->tmp.new_compression == NULL)
371 s->session->compress_meth=0;
373 s->session->compress_meth=
374 s->s3->tmp.new_compression->id;
375 if (!s->method->ssl3_enc->setup_key_block(s))
381 if (!s->method->ssl3_enc->change_cipher_state(s,
382 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
390 case SSL3_ST_CW_FINISHED_A:
391 case SSL3_ST_CW_FINISHED_B:
392 ret=ssl3_send_finished(s,
393 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
394 s->method->ssl3_enc->client_finished_label,
395 s->method->ssl3_enc->client_finished_label_len);
396 if (ret <= 0) goto end;
397 s->state=SSL3_ST_CW_FLUSH;
400 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
403 s->s3->tmp.next_state=SSL_ST_OK;
404 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
407 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
408 s->s3->delay_buf_pop_ret=0;
413 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
418 case SSL3_ST_CR_FINISHED_A:
419 case SSL3_ST_CR_FINISHED_B:
421 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
422 SSL3_ST_CR_FINISHED_B);
423 if (ret <= 0) goto end;
426 s->state=SSL3_ST_CW_CHANGE_A;
432 case SSL3_ST_CW_FLUSH:
433 /* number of bytes to be flushed */
434 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
437 s->rwstate=SSL_WRITING;
438 num1=BIO_flush(s->wbio);
439 if (num1 <= 0) { ret= -1; goto end; }
440 s->rwstate=SSL_NOTHING;
443 s->state=s->s3->tmp.next_state;
447 /* clean a few things up */
448 ssl3_cleanup_key_block(s);
450 if (s->init_buf != NULL)
452 BUF_MEM_free(s->init_buf);
456 /* If we are not 'joining' the last two packets,
457 * remove the buffering now */
458 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
459 ssl_free_wbio_buffer(s);
460 /* else do it later in ssl3_write */
465 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
466 if (s->hit) s->ctx->stats.sess_hit++;
470 s->handshake_func=ssl3_connect;
471 s->ctx->stats.sess_connect_good++;
473 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
479 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
485 /* did we do anything */
486 if (!s->s3->tmp.reuse_message && !skip)
490 if ((ret=BIO_flush(s->wbio)) <= 0)
494 if ((cb != NULL) && (s->state != state))
498 cb(s,SSL_CB_CONNECT_LOOP,1);
507 cb(s,SSL_CB_CONNECT_EXIT,ret);
512 static int ssl3_client_hello(SSL *s)
517 unsigned long Time,l;
520 buf=(unsigned char *)s->init_buf->data;
521 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
523 if ((s->session == NULL) ||
524 (s->session->ssl_version != s->version) ||
525 (s->session->not_resumable))
527 if (!ssl_get_new_session(s,0))
530 /* else use the pre-loaded session */
532 p=s->s3->client_random;
533 Time=time(NULL); /* Time */
535 RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-sizeof(Time));
537 /* Do the message type and length last */
540 *(p++)=s->version>>8;
541 *(p++)=s->version&0xff;
542 s->client_version=s->version;
545 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
552 i=s->session->session_id_length;
556 if (i > sizeof s->session->session_id)
558 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
561 memcpy(p,s->session->session_id,i);
565 /* Ciphers supported */
566 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]));
569 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
576 if (s->ctx->comp_methods == NULL)
579 j=sk_SSL_COMP_num(s->ctx->comp_methods);
583 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
586 *(p++)=0; /* Add the NULL method */
590 *(d++)=SSL3_MT_CLIENT_HELLO;
593 s->state=SSL3_ST_CW_CLNT_HELLO_B;
594 /* number of bytes to write */
599 /* SSL3_ST_CW_CLNT_HELLO_B */
600 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
605 static int ssl3_get_server_hello(SSL *s)
607 STACK_OF(SSL_CIPHER) *sk;
615 n=ssl3_get_message(s,
616 SSL3_ST_CR_SRVR_HELLO_A,
617 SSL3_ST_CR_SRVR_HELLO_B,
618 SSL3_MT_SERVER_HELLO,
622 if (!ok) return((int)n);
623 d=p=(unsigned char *)s->init_msg;
625 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
627 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
628 s->version=(s->version&0xff00)|p[1];
629 al=SSL_AD_PROTOCOL_VERSION;
634 /* load the server hello data */
635 /* load the server random */
636 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
639 /* get the session-id */
642 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
644 al=SSL_AD_ILLEGAL_PARAMETER;
645 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
649 if (j != 0 && j == s->session->session_id_length
650 && memcmp(p,s->session->session_id,j) == 0)
652 if(s->sid_ctx_length != s->session->sid_ctx_length
653 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
655 /* actually a client application bug */
656 al=SSL_AD_ILLEGAL_PARAMETER;
657 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
662 else /* a miss or crap from the other end */
664 /* If we were trying for session-id reuse, make a new
665 * SSL_SESSION so we don't stuff up other people */
667 if (s->session->session_id_length > 0)
669 if (!ssl_get_new_session(s,0))
671 al=SSL_AD_INTERNAL_ERROR;
675 s->session->session_id_length=j;
676 memcpy(s->session->session_id,p,j); /* j could be 0 */
679 c=ssl_get_cipher_by_char(s,p);
683 al=SSL_AD_ILLEGAL_PARAMETER;
684 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
687 p+=ssl_put_cipher_by_char(s,NULL,NULL);
689 sk=ssl_get_ciphers_by_id(s);
690 i=sk_SSL_CIPHER_find(sk,c);
693 /* we did not say we would use this cipher */
694 al=SSL_AD_ILLEGAL_PARAMETER;
695 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
699 if (s->hit && (s->session->cipher != c))
702 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
704 al=SSL_AD_ILLEGAL_PARAMETER;
705 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
709 s->s3->tmp.new_cipher=c;
711 /* lets get the compression algorithm */
717 comp=ssl3_comp_find(s->ctx->comp_methods,j);
719 if ((j != 0) && (comp == NULL))
721 al=SSL_AD_ILLEGAL_PARAMETER;
722 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
727 s->s3->tmp.new_compression=comp;
732 /* wrong packet length */
733 al=SSL_AD_DECODE_ERROR;
734 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
740 ssl3_send_alert(s,SSL3_AL_FATAL,al);
745 static int ssl3_get_server_certificate(SSL *s)
748 unsigned long n,nc,llen,l;
750 unsigned char *p,*d,*q;
751 STACK_OF(X509) *sk=NULL;
754 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
756 n=ssl3_get_message(s,
763 if (!ok) return((int)n);
765 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
767 s->s3->tmp.reuse_message=1;
771 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
773 al=SSL_AD_UNEXPECTED_MESSAGE;
774 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
777 d=p=(unsigned char *)s->init_msg;
779 if ((sk=sk_X509_new_null()) == NULL)
781 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
788 al=SSL_AD_DECODE_ERROR;
789 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
792 for (nc=0; nc<llen; )
797 al=SSL_AD_DECODE_ERROR;
798 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
803 x=d2i_X509(NULL,&q,l);
806 al=SSL_AD_BAD_CERTIFICATE;
807 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
812 al=SSL_AD_DECODE_ERROR;
813 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
816 if (!sk_X509_push(sk,x))
818 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
826 i=ssl_verify_cert_chain(s,sk);
827 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)
828 #ifndef OPENSSL_NO_KRB5
829 && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK))
830 != (SSL_aKRB5|SSL_kKRB5)
831 #endif /* OPENSSL_NO_KRB5 */
834 al=ssl_verify_alarm_type(s->verify_result);
835 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
838 ERR_clear_error(); /* but we keep s->verify_result */
840 sc=ssl_sess_cert_new();
841 if (sc == NULL) goto err;
843 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
844 s->session->sess_cert=sc;
847 /* Inconsistency alert: cert_chain does include the peer's
848 * certificate, which we don't include in s3_srvr.c */
849 x=sk_X509_value(sk,0);
851 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
853 pkey=X509_get_pubkey(x);
855 /* VRS: allow null cert if auth == KRB5 */
856 need_cert = ((s->s3->tmp.new_cipher->algorithms
857 & (SSL_MKEY_MASK|SSL_AUTH_MASK))
858 == (SSL_aKRB5|SSL_kKRB5))? 0: 1;
861 printf("pkey,x = %p, %p\n", pkey,x);
862 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
863 printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name,
864 s->s3->tmp.new_cipher->algorithms, need_cert);
865 #endif /* KSSL_DEBUG */
867 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
871 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
872 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
876 i=ssl_cert_type(x,pkey);
877 if (need_cert && i < 0)
881 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
882 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
888 sc->peer_cert_type=i;
889 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
890 /* Why would the following ever happen?
891 * We just created sc a couple of lines ago. */
892 if (sc->peer_pkeys[i].x509 != NULL)
893 X509_free(sc->peer_pkeys[i].x509);
894 sc->peer_pkeys[i].x509=x;
895 sc->peer_key= &(sc->peer_pkeys[i]);
897 if (s->session->peer != NULL)
898 X509_free(s->session->peer);
899 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
904 sc->peer_cert_type=i;
907 if (s->session->peer != NULL)
908 X509_free(s->session->peer);
909 s->session->peer=NULL;
911 s->session->verify_result = s->verify_result;
919 ssl3_send_alert(s,SSL3_AL_FATAL,al);
924 sk_X509_pop_free(sk,X509_free);
928 static int ssl3_get_key_exchange(SSL *s)
930 #ifndef OPENSSL_NO_RSA
931 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
934 unsigned char *param,*p;
935 int al,i,j,param_len,ok;
938 #ifndef OPENSSL_NO_RSA
941 #ifndef OPENSSL_NO_DH
945 /* use same message size as in ssl3_get_certificate_request()
946 * as ServerKeyExchange message may be skipped */
947 n=ssl3_get_message(s,
948 SSL3_ST_CR_KEY_EXCH_A,
949 SSL3_ST_CR_KEY_EXCH_B,
954 if (!ok) return((int)n);
956 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
958 s->s3->tmp.reuse_message=1;
962 param=p=(unsigned char *)s->init_msg;
964 if (s->session->sess_cert != NULL)
966 #ifndef OPENSSL_NO_RSA
967 if (s->session->sess_cert->peer_rsa_tmp != NULL)
969 RSA_free(s->session->sess_cert->peer_rsa_tmp);
970 s->session->sess_cert->peer_rsa_tmp=NULL;
973 #ifndef OPENSSL_NO_DH
974 if (s->session->sess_cert->peer_dh_tmp)
976 DH_free(s->session->sess_cert->peer_dh_tmp);
977 s->session->sess_cert->peer_dh_tmp=NULL;
983 s->session->sess_cert=ssl_sess_cert_new();
987 alg=s->s3->tmp.new_cipher->algorithms;
988 EVP_MD_CTX_init(&md_ctx);
990 #ifndef OPENSSL_NO_RSA
993 if ((rsa=RSA_new()) == NULL)
995 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1002 al=SSL_AD_DECODE_ERROR;
1003 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1006 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1008 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1017 al=SSL_AD_DECODE_ERROR;
1018 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1021 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1023 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1029 /* this should be because we are using an export cipher */
1031 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1034 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1037 s->session->sess_cert->peer_rsa_tmp=rsa;
1040 #else /* OPENSSL_NO_RSA */
1044 #ifndef OPENSSL_NO_DH
1045 else if (alg & SSL_kEDH)
1047 if ((dh=DH_new()) == NULL)
1049 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1056 al=SSL_AD_DECODE_ERROR;
1057 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1060 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1062 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1071 al=SSL_AD_DECODE_ERROR;
1072 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1075 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1077 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1086 al=SSL_AD_DECODE_ERROR;
1087 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1090 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1092 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1098 #ifndef OPENSSL_NO_RSA
1100 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1105 #ifndef OPENSSL_NO_DSA
1106 else if (alg & SSL_aDSS)
1107 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1109 /* else anonymous DH, so no certificate or pkey. */
1111 s->session->sess_cert->peer_dh_tmp=dh;
1114 else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
1116 al=SSL_AD_ILLEGAL_PARAMETER;
1117 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1120 #endif /* !OPENSSL_NO_DH */
1123 al=SSL_AD_HANDSHAKE_FAILURE;
1124 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1129 /* p points to the next byte, there are 'n' bytes left */
1132 /* if it was signed, check the signature */
1137 j=EVP_PKEY_size(pkey);
1139 if ((i != n) || (n > j) || (n <= 0))
1141 /* wrong packet length */
1142 al=SSL_AD_DECODE_ERROR;
1143 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1147 #ifndef OPENSSL_NO_RSA
1148 if (pkey->type == EVP_PKEY_RSA)
1154 for (num=2; num > 0; num--)
1156 EVP_DigestInit_ex(&md_ctx,(num == 2)
1157 ?s->ctx->md5:s->ctx->sha1, NULL);
1158 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1159 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1160 EVP_DigestUpdate(&md_ctx,param,param_len);
1161 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1165 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1169 al=SSL_AD_DECRYPT_ERROR;
1170 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1176 al=SSL_AD_DECRYPT_ERROR;
1177 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1183 #ifndef OPENSSL_NO_DSA
1184 if (pkey->type == EVP_PKEY_DSA)
1187 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1188 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1189 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1190 EVP_VerifyUpdate(&md_ctx,param,param_len);
1191 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1194 al=SSL_AD_DECRYPT_ERROR;
1195 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1202 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1208 /* still data left over */
1209 if (!(alg & SSL_aNULL))
1211 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1216 al=SSL_AD_DECODE_ERROR;
1217 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1221 EVP_PKEY_free(pkey);
1222 EVP_MD_CTX_cleanup(&md_ctx);
1225 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1227 EVP_PKEY_free(pkey);
1228 #ifndef OPENSSL_NO_RSA
1232 #ifndef OPENSSL_NO_DH
1236 EVP_MD_CTX_cleanup(&md_ctx);
1240 static int ssl3_get_certificate_request(SSL *s)
1243 unsigned long n,nc,l;
1244 unsigned int llen,ctype_num,i;
1246 unsigned char *p,*d,*q;
1247 STACK_OF(X509_NAME) *ca_sk=NULL;
1249 n=ssl3_get_message(s,
1250 SSL3_ST_CR_CERT_REQ_A,
1251 SSL3_ST_CR_CERT_REQ_B,
1256 if (!ok) return((int)n);
1258 s->s3->tmp.cert_req=0;
1260 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1262 s->s3->tmp.reuse_message=1;
1266 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1268 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1269 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1273 /* TLS does not like anon-DH with client cert */
1274 if (s->version > SSL3_VERSION)
1276 l=s->s3->tmp.new_cipher->algorithms;
1279 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1280 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1285 d=p=(unsigned char *)s->init_msg;
1287 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1289 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1293 /* get the certificate types */
1295 if (ctype_num > SSL3_CT_NUMBER)
1296 ctype_num=SSL3_CT_NUMBER;
1297 for (i=0; i<ctype_num; i++)
1298 s->s3->tmp.ctype[i]= p[i];
1301 /* get the CA RDNs */
1306 out=fopen("/tmp/vsign.der","w");
1307 fwrite(p,1,llen,out);
1312 if ((llen+ctype_num+2+1) != n)
1314 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1315 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1319 for (nc=0; nc<llen; )
1322 if ((l+nc+2) > llen)
1324 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1325 goto cont; /* netscape bugs */
1326 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1327 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1333 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1335 /* If netscape tolerance is on, ignore errors */
1336 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1340 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1341 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1348 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1349 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1352 if (!sk_X509_NAME_push(ca_sk,xn))
1354 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1368 /* we should setup a certificate to return.... */
1369 s->s3->tmp.cert_req=1;
1370 s->s3->tmp.ctype_num=ctype_num;
1371 if (s->s3->tmp.ca_names != NULL)
1372 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1373 s->s3->tmp.ca_names=ca_sk;
1378 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1382 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1384 return(X509_NAME_cmp(*a,*b));
1387 static int ssl3_get_server_done(SSL *s)
1392 n=ssl3_get_message(s,
1393 SSL3_ST_CR_SRVR_DONE_A,
1394 SSL3_ST_CR_SRVR_DONE_B,
1395 SSL3_MT_SERVER_DONE,
1396 30, /* should be very small, like 0 :-) */
1399 if (!ok) return((int)n);
1402 /* should contain no data */
1403 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1404 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1411 static int ssl3_send_client_key_exchange(SSL *s)
1413 unsigned char *p,*d;
1416 #ifndef OPENSSL_NO_RSA
1418 EVP_PKEY *pkey=NULL;
1420 #ifndef OPENSSL_NO_KRB5
1422 #endif /* OPENSSL_NO_KRB5 */
1424 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1426 d=(unsigned char *)s->init_buf->data;
1429 l=s->s3->tmp.new_cipher->algorithms;
1431 /* Fool emacs indentation */
1433 #ifndef OPENSSL_NO_RSA
1434 else if (l & SSL_kRSA)
1437 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1439 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1440 rsa=s->session->sess_cert->peer_rsa_tmp;
1443 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1444 if ((pkey == NULL) ||
1445 (pkey->type != EVP_PKEY_RSA) ||
1446 (pkey->pkey.rsa == NULL))
1448 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1452 EVP_PKEY_free(pkey);
1455 tmp_buf[0]=s->client_version>>8;
1456 tmp_buf[1]=s->client_version&0xff;
1457 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1460 s->session->master_key_length=sizeof tmp_buf;
1463 /* Fix buf for TLS and beyond */
1464 if (s->version > SSL3_VERSION)
1466 n=RSA_public_encrypt(sizeof tmp_buf,
1467 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1469 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1470 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1474 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1478 /* Fix buf for TLS and beyond */
1479 if (s->version > SSL3_VERSION)
1485 s->session->master_key_length=
1486 s->method->ssl3_enc->generate_master_secret(s,
1487 s->session->master_key,
1488 tmp_buf,sizeof tmp_buf);
1489 memset(tmp_buf,0,sizeof tmp_buf);
1492 #ifndef OPENSSL_NO_KRB5
1493 else if (l & SSL_kKRB5)
1495 krb5_error_code krb5rc;
1496 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1497 /* krb5_data krb5_ap_req; */
1498 krb5_data *enc_ticket;
1499 krb5_data authenticator, *authp = NULL;
1500 EVP_CIPHER_CTX ciph_ctx;
1501 EVP_CIPHER *enc = NULL;
1502 unsigned char iv[EVP_MAX_IV_LENGTH];
1503 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1504 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1505 + EVP_MAX_IV_LENGTH];
1506 int padl, outl = sizeof(epms);
1508 EVP_CIPHER_CTX_init(&ciph_ctx);
1511 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1513 #endif /* KSSL_DEBUG */
1517 if (KRB5SENDAUTH) authp = &authenticator;
1518 #endif /* KRB5SENDAUTH */
1520 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
1522 enc = kssl_map_enc(kssl_ctx->enctype);
1527 printf("kssl_cget_tkt rtn %d\n", krb5rc);
1528 if (krb5rc && kssl_err.text)
1529 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
1531 #endif /* KSSL_DEBUG */
1535 ssl3_send_alert(s,SSL3_AL_FATAL,
1536 SSL_AD_HANDSHAKE_FAILURE);
1537 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1542 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
1543 ** in place of RFC 2712 KerberosWrapper, as in:
1545 ** Send ticket (copy to *p, set n = length)
1546 ** n = krb5_ap_req.length;
1547 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1548 ** if (krb5_ap_req.data)
1549 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1551 ** Now using real RFC 2712 KerberosWrapper
1552 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
1553 ** Note: 2712 "opaque" types are here replaced
1554 ** with a 2-byte length followed by the value.
1556 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
1557 ** Where "xx xx" = length bytes. Shown here with
1558 ** optional authenticator omitted.
1561 /* KerberosWrapper.Ticket */
1562 s2n(enc_ticket->length,p);
1563 memcpy(p, enc_ticket->data, enc_ticket->length);
1564 p+= enc_ticket->length;
1565 n = enc_ticket->length + 2;
1567 /* KerberosWrapper.Authenticator */
1568 if (authp && authp->length)
1570 s2n(authp->length,p);
1571 memcpy(p, authp->data, authp->length);
1573 n+= authp->length + 2;
1581 s2n(0,p);/* null authenticator length */
1585 if (RAND_bytes(tmp_buf,sizeof tmp_buf) <= 0)
1588 /* 20010420 VRS. Tried it this way; failed.
1589 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
1590 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
1591 ** kssl_ctx->length);
1592 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
1595 memset(iv, 0, sizeof iv); /* per RFC 1510 */
1596 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
1598 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
1600 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
1602 if (outl > sizeof epms)
1604 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
1607 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
1609 /* KerberosWrapper.EncryptedPreMasterSecret */
1611 memcpy(p, epms, outl);
1615 s->session->master_key_length=
1616 s->method->ssl3_enc->generate_master_secret(s,
1617 s->session->master_key,
1618 tmp_buf, sizeof tmp_buf);
1620 memset(tmp_buf, 0, sizeof tmp_buf);
1621 memset(epms, 0, outl);
1624 #ifndef OPENSSL_NO_DH
1625 else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1627 DH *dh_srvr,*dh_clnt;
1629 if (s->session->sess_cert->peer_dh_tmp != NULL)
1630 dh_srvr=s->session->sess_cert->peer_dh_tmp;
1633 /* we get them from the cert */
1634 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1635 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
1639 /* generate a new random key */
1640 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
1642 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1645 if (!DH_generate_key(dh_clnt))
1647 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1651 /* use the 'p' output buffer for the DH key, but
1652 * make sure to clear it out afterwards */
1654 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
1658 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1662 /* generate master key from the result */
1663 s->session->master_key_length=
1664 s->method->ssl3_enc->generate_master_secret(s,
1665 s->session->master_key,p,n);
1669 /* send off the data */
1670 n=BN_num_bytes(dh_clnt->pub_key);
1672 BN_bn2bin(dh_clnt->pub_key,p);
1677 /* perhaps clean things up a bit EAY EAY EAY EAY*/
1682 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1683 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1687 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
1690 s->state=SSL3_ST_CW_KEY_EXCH_B;
1691 /* number of bytes to write */
1696 /* SSL3_ST_CW_KEY_EXCH_B */
1697 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1702 static int ssl3_send_client_verify(SSL *s)
1704 unsigned char *p,*d;
1705 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
1707 #ifndef OPENSSL_NO_RSA
1711 #ifndef OPENSSL_NO_DSA
1715 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
1717 d=(unsigned char *)s->init_buf->data;
1719 pkey=s->cert->key->privatekey;
1721 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
1722 &(data[MD5_DIGEST_LENGTH]));
1724 #ifndef OPENSSL_NO_RSA
1725 if (pkey->type == EVP_PKEY_RSA)
1727 s->method->ssl3_enc->cert_verify_mac(s,
1728 &(s->s3->finish_dgst1),&(data[0]));
1729 if (RSA_sign(NID_md5_sha1, data,
1730 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
1731 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
1733 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
1741 #ifndef OPENSSL_NO_DSA
1742 if (pkey->type == EVP_PKEY_DSA)
1744 if (!DSA_sign(pkey->save_type,
1745 &(data[MD5_DIGEST_LENGTH]),
1746 SHA_DIGEST_LENGTH,&(p[2]),
1747 (unsigned int *)&j,pkey->pkey.dsa))
1749 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
1758 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
1761 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
1764 s->init_num=(int)n+4;
1767 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1772 static int ssl3_send_client_certificate(SSL *s)
1775 EVP_PKEY *pkey=NULL;
1779 if (s->state == SSL3_ST_CW_CERT_A)
1781 if ((s->cert == NULL) ||
1782 (s->cert->key->x509 == NULL) ||
1783 (s->cert->key->privatekey == NULL))
1784 s->state=SSL3_ST_CW_CERT_B;
1786 s->state=SSL3_ST_CW_CERT_C;
1789 /* We need to get a client cert */
1790 if (s->state == SSL3_ST_CW_CERT_B)
1792 /* If we get an error, we need to
1793 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
1794 * We then get retied later */
1796 if (s->ctx->client_cert_cb != NULL)
1797 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
1800 s->rwstate=SSL_X509_LOOKUP;
1803 s->rwstate=SSL_NOTHING;
1804 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
1806 s->state=SSL3_ST_CW_CERT_B;
1807 if ( !SSL_use_certificate(s,x509) ||
1808 !SSL_use_PrivateKey(s,pkey))
1814 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
1817 if (x509 != NULL) X509_free(x509);
1818 if (pkey != NULL) EVP_PKEY_free(pkey);
1821 if (s->version == SSL3_VERSION)
1823 s->s3->tmp.cert_req=0;
1824 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
1829 s->s3->tmp.cert_req=2;
1833 /* Ok, we have a cert */
1834 s->state=SSL3_ST_CW_CERT_C;
1837 if (s->state == SSL3_ST_CW_CERT_C)
1839 s->state=SSL3_ST_CW_CERT_D;
1840 l=ssl3_output_cert_chain(s,
1841 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
1845 /* SSL3_ST_CW_CERT_D */
1846 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1849 #define has_bits(i,m) (((i)&(m)) == (m))
1851 static int ssl3_check_cert_and_algorithm(SSL *s)
1855 EVP_PKEY *pkey=NULL;
1857 #ifndef OPENSSL_NO_RSA
1860 #ifndef OPENSSL_NO_DH
1864 sc=s->session->sess_cert;
1868 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
1872 algs=s->s3->tmp.new_cipher->algorithms;
1874 /* we don't have a certificate */
1875 if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5))
1878 #ifndef OPENSSL_NO_RSA
1879 rsa=s->session->sess_cert->peer_rsa_tmp;
1881 #ifndef OPENSSL_NO_DH
1882 dh=s->session->sess_cert->peer_dh_tmp;
1885 /* This is the passed certificate */
1887 idx=sc->peer_cert_type;
1888 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
1889 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
1890 EVP_PKEY_free(pkey);
1893 /* Check that we have a certificate if we require one */
1894 if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
1896 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
1899 #ifndef OPENSSL_NO_DSA
1900 else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
1902 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
1906 #ifndef OPENSSL_NO_RSA
1907 if ((algs & SSL_kRSA) &&
1908 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
1910 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
1914 #ifndef OPENSSL_NO_DH
1915 if ((algs & SSL_kEDH) &&
1916 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
1918 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
1921 else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
1923 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
1926 #ifndef OPENSSL_NO_DSA
1927 else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
1929 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
1935 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
1937 #ifndef OPENSSL_NO_RSA
1938 if (algs & SSL_kRSA)
1941 || RSA_size(rsa) > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
1943 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
1949 #ifndef OPENSSL_NO_DH
1950 if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1953 || DH_size(dh) > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
1955 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
1962 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
1968 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);