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) 1998-2003 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).
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
114 * Portions of the attached software ("Contribution") are developed by
115 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
117 * The Contribution is licensed pursuant to the OpenSSL open source
118 * license provided above.
120 * ECC cipher suite support in OpenSSL originally written by
121 * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
126 #include "ssl_locl.h"
127 #include "kssl_lcl.h"
128 #include <openssl/buffer.h>
129 #include <openssl/rand.h>
130 #include <openssl/objects.h>
131 #include <openssl/evp.h>
132 #include <openssl/md5.h>
134 #include <openssl/fips.h>
137 #ifndef OPENSSL_NO_DH
138 #include <openssl/dh.h>
140 #include <openssl/bn.h>
141 #ifndef OPENSSL_NO_ENGINE
142 #include <openssl/engine.h>
145 static SSL_METHOD *ssl3_get_client_method(int ver);
146 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
148 #ifndef OPENSSL_NO_ECDH
149 static int curve_id2nid(int curve_id);
150 int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs);
153 static SSL_METHOD *ssl3_get_client_method(int ver)
155 if (ver == SSL3_VERSION)
156 return(SSLv3_client_method());
161 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
162 ssl_undefined_function,
164 ssl3_get_client_method)
166 int ssl3_connect(SSL *s)
169 unsigned long Time=(unsigned long)time(NULL);
170 void (*cb)(const SSL *ssl,int type,int val)=NULL;
172 int new_state,state,skip=0;
174 RAND_add(&Time,sizeof(Time),0);
178 if (s->info_callback != NULL)
180 else if (s->ctx->info_callback != NULL)
181 cb=s->ctx->info_callback;
184 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
192 case SSL_ST_RENEGOTIATE:
194 s->state=SSL_ST_CONNECT;
195 s->ctx->stats.sess_connect_renegotiate++;
199 case SSL_ST_BEFORE|SSL_ST_CONNECT:
200 case SSL_ST_OK|SSL_ST_CONNECT:
203 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
205 if ((s->version & 0xff00 ) != 0x0300)
207 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
212 /* s->version=SSL3_VERSION; */
213 s->type=SSL_ST_CONNECT;
215 if (s->init_buf == NULL)
217 if ((buf=BUF_MEM_new()) == NULL)
222 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
231 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
233 /* setup buffing BIO */
234 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
236 /* don't push the buffering BIO quite yet */
238 ssl3_init_finished_mac(s);
240 s->state=SSL3_ST_CW_CLNT_HELLO_A;
241 s->ctx->stats.sess_connect++;
245 case SSL3_ST_CW_CLNT_HELLO_A:
246 case SSL3_ST_CW_CLNT_HELLO_B:
249 ret=ssl3_client_hello(s);
250 if (ret <= 0) goto end;
251 s->state=SSL3_ST_CR_SRVR_HELLO_A;
254 /* turn on buffering for the next lot of output */
255 if (s->bbio != s->wbio)
256 s->wbio=BIO_push(s->bbio,s->wbio);
260 case SSL3_ST_CR_SRVR_HELLO_A:
261 case SSL3_ST_CR_SRVR_HELLO_B:
262 ret=ssl3_get_server_hello(s);
263 if (ret <= 0) goto end;
266 s->state=SSL3_ST_CR_FINISHED_A;
267 #ifndef OPENSSL_NO_TLSEXT
268 if (s->tlsext_ticket_expected)
270 /* receive renewed session ticket */
271 s->state=SSL3_ST_CR_SESSION_TICKET_A;
276 s->state=SSL3_ST_CR_CERT_A;
280 case SSL3_ST_CR_CERT_A:
281 case SSL3_ST_CR_CERT_B:
282 #ifndef OPENSSL_NO_TLSEXT
283 ret=ssl3_check_finished(s);
284 if (ret <= 0) goto end;
288 if (s->tlsext_ticket_expected)
289 s->state=SSL3_ST_CR_SESSION_TICKET_A;
291 s->state=SSL3_ST_CR_FINISHED_A;
296 /* Check if it is anon DH/ECDH */
297 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL))
299 ret=ssl3_get_server_certificate(s);
300 if (ret <= 0) goto end;
301 #ifndef OPENSSL_NO_TLSEXT
302 if (s->tlsext_status_expected)
303 s->state=SSL3_ST_CR_CERT_STATUS_A;
305 s->state=SSL3_ST_CR_KEY_EXCH_A;
310 s->state=SSL3_ST_CR_KEY_EXCH_A;
317 s->state=SSL3_ST_CR_KEY_EXCH_A;
322 case SSL3_ST_CR_KEY_EXCH_A:
323 case SSL3_ST_CR_KEY_EXCH_B:
324 ret=ssl3_get_key_exchange(s);
325 if (ret <= 0) goto end;
326 s->state=SSL3_ST_CR_CERT_REQ_A;
329 /* at this point we check that we have the
330 * required stuff from the server */
331 if (!ssl3_check_cert_and_algorithm(s))
338 case SSL3_ST_CR_CERT_REQ_A:
339 case SSL3_ST_CR_CERT_REQ_B:
340 ret=ssl3_get_certificate_request(s);
341 if (ret <= 0) goto end;
342 s->state=SSL3_ST_CR_SRVR_DONE_A;
346 case SSL3_ST_CR_SRVR_DONE_A:
347 case SSL3_ST_CR_SRVR_DONE_B:
348 ret=ssl3_get_server_done(s);
349 if (ret <= 0) goto end;
350 if (s->s3->tmp.cert_req)
351 s->state=SSL3_ST_CW_CERT_A;
353 s->state=SSL3_ST_CW_KEY_EXCH_A;
358 case SSL3_ST_CW_CERT_A:
359 case SSL3_ST_CW_CERT_B:
360 case SSL3_ST_CW_CERT_C:
361 case SSL3_ST_CW_CERT_D:
362 ret=ssl3_send_client_certificate(s);
363 if (ret <= 0) goto end;
364 s->state=SSL3_ST_CW_KEY_EXCH_A;
368 case SSL3_ST_CW_KEY_EXCH_A:
369 case SSL3_ST_CW_KEY_EXCH_B:
370 ret=ssl3_send_client_key_exchange(s);
371 if (ret <= 0) goto end;
372 /* EAY EAY EAY need to check for DH fix cert
374 /* For TLS, cert_req is set to 2, so a cert chain
375 * of nothing is sent, but no verify packet is sent */
376 /* XXX: For now, we do not support client
377 * authentication in ECDH cipher suites with
378 * ECDH (rather than ECDSA) certificates.
379 * We need to skip the certificate verify
380 * message when client's ECDH public key is sent
381 * inside the client certificate.
383 if (s->s3->tmp.cert_req == 1)
385 s->state=SSL3_ST_CW_CERT_VRFY_A;
389 s->state=SSL3_ST_CW_CHANGE_A;
390 s->s3->change_cipher_spec=0;
396 case SSL3_ST_CW_CERT_VRFY_A:
397 case SSL3_ST_CW_CERT_VRFY_B:
398 ret=ssl3_send_client_verify(s);
399 if (ret <= 0) goto end;
400 s->state=SSL3_ST_CW_CHANGE_A;
402 s->s3->change_cipher_spec=0;
405 case SSL3_ST_CW_CHANGE_A:
406 case SSL3_ST_CW_CHANGE_B:
407 ret=ssl3_send_change_cipher_spec(s,
408 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
409 if (ret <= 0) goto end;
410 s->state=SSL3_ST_CW_FINISHED_A;
413 s->session->cipher=s->s3->tmp.new_cipher;
414 #ifdef OPENSSL_NO_COMP
415 s->session->compress_meth=0;
417 if (s->s3->tmp.new_compression == NULL)
418 s->session->compress_meth=0;
420 s->session->compress_meth=
421 s->s3->tmp.new_compression->id;
423 if (!s->method->ssl3_enc->setup_key_block(s))
429 if (!s->method->ssl3_enc->change_cipher_state(s,
430 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
438 case SSL3_ST_CW_FINISHED_A:
439 case SSL3_ST_CW_FINISHED_B:
440 ret=ssl3_send_finished(s,
441 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
442 s->method->ssl3_enc->client_finished_label,
443 s->method->ssl3_enc->client_finished_label_len);
444 if (ret <= 0) goto end;
445 s->state=SSL3_ST_CW_FLUSH;
448 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
451 s->s3->tmp.next_state=SSL_ST_OK;
452 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
455 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
456 s->s3->delay_buf_pop_ret=0;
461 #ifndef OPENSSL_NO_TLSEXT
462 /* Allow NewSessionTicket if ticket expected */
463 if (s->tlsext_ticket_expected)
464 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
468 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
473 #ifndef OPENSSL_NO_TLSEXT
474 case SSL3_ST_CR_SESSION_TICKET_A:
475 case SSL3_ST_CR_SESSION_TICKET_B:
476 ret=ssl3_get_new_session_ticket(s);
477 if (ret <= 0) goto end;
478 s->state=SSL3_ST_CR_FINISHED_A;
482 case SSL3_ST_CR_CERT_STATUS_A:
483 case SSL3_ST_CR_CERT_STATUS_B:
484 ret=ssl3_get_cert_status(s);
485 if (ret <= 0) goto end;
486 s->state=SSL3_ST_CR_KEY_EXCH_A;
491 case SSL3_ST_CR_FINISHED_A:
492 case SSL3_ST_CR_FINISHED_B:
494 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
495 SSL3_ST_CR_FINISHED_B);
496 if (ret <= 0) goto end;
499 s->state=SSL3_ST_CW_CHANGE_A;
505 case SSL3_ST_CW_FLUSH:
506 s->rwstate=SSL_WRITING;
507 if (BIO_flush(s->wbio) <= 0)
512 s->rwstate=SSL_NOTHING;
513 s->state=s->s3->tmp.next_state;
517 /* clean a few things up */
518 ssl3_cleanup_key_block(s);
520 if (s->init_buf != NULL)
522 BUF_MEM_free(s->init_buf);
526 /* If we are not 'joining' the last two packets,
527 * remove the buffering now */
528 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
529 ssl_free_wbio_buffer(s);
530 /* else do it later in ssl3_write */
535 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
536 if (s->hit) s->ctx->stats.sess_hit++;
540 s->handshake_func=ssl3_connect;
541 s->ctx->stats.sess_connect_good++;
543 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
549 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
555 /* did we do anything */
556 if (!s->s3->tmp.reuse_message && !skip)
560 if ((ret=BIO_flush(s->wbio)) <= 0)
564 if ((cb != NULL) && (s->state != state))
568 cb(s,SSL_CB_CONNECT_LOOP,1);
579 cb(s,SSL_CB_CONNECT_EXIT,ret);
584 int ssl3_client_hello(SSL *s)
589 unsigned long Time,l;
590 #ifndef OPENSSL_NO_COMP
595 buf=(unsigned char *)s->init_buf->data;
596 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
598 SSL_SESSION *sess = s->session;
599 if ((sess == NULL) ||
600 (sess->ssl_version != s->version) ||
601 #ifdef OPENSSL_NO_TLSEXT
602 !sess->session_id_length ||
604 (!sess->session_id_length && !sess->tlsext_tick) ||
606 (sess->not_resumable))
608 if (!ssl_get_new_session(s,0))
611 /* else use the pre-loaded session */
613 p=s->s3->client_random;
614 Time=(unsigned long)time(NULL); /* Time */
616 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
619 /* Do the message type and length last */
622 *(p++)=s->version>>8;
623 *(p++)=s->version&0xff;
624 s->client_version=s->version;
627 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
634 i=s->session->session_id_length;
638 if (i > (int)sizeof(s->session->session_id))
640 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
643 memcpy(p,s->session->session_id,i);
647 /* Ciphers supported */
648 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
651 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
658 #ifdef OPENSSL_NO_COMP
661 if (s->ctx->comp_methods == NULL)
664 j=sk_SSL_COMP_num(s->ctx->comp_methods);
668 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
672 *(p++)=0; /* Add the NULL method */
673 #ifndef OPENSSL_NO_TLSEXT
674 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
676 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
682 *(d++)=SSL3_MT_CLIENT_HELLO;
685 s->state=SSL3_ST_CW_CLNT_HELLO_B;
686 /* number of bytes to write */
691 /* SSL3_ST_CW_CLNT_HELLO_B */
692 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
697 int ssl3_get_server_hello(SSL *s)
699 STACK_OF(SSL_CIPHER) *sk;
705 #ifndef OPENSSL_NO_COMP
709 n=s->method->ssl_get_message(s,
710 SSL3_ST_CR_SRVR_HELLO_A,
711 SSL3_ST_CR_SRVR_HELLO_B,
716 if (!ok) return((int)n);
718 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
720 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
722 if ( s->d1->send_cookie == 0)
724 s->s3->tmp.reuse_message = 1;
727 else /* already sent a cookie */
729 al=SSL_AD_UNEXPECTED_MESSAGE;
730 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
736 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
738 al=SSL_AD_UNEXPECTED_MESSAGE;
739 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
743 d=p=(unsigned char *)s->init_msg;
745 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
747 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
748 s->version=(s->version&0xff00)|p[1];
749 al=SSL_AD_PROTOCOL_VERSION;
754 /* load the server hello data */
755 /* load the server random */
756 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
759 /* get the session-id */
762 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
764 al=SSL_AD_ILLEGAL_PARAMETER;
765 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
769 if (j != 0 && j == s->session->session_id_length
770 && memcmp(p,s->session->session_id,j) == 0)
772 if(s->sid_ctx_length != s->session->sid_ctx_length
773 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
775 /* actually a client application bug */
776 al=SSL_AD_ILLEGAL_PARAMETER;
777 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
782 else /* a miss or crap from the other end */
784 /* If we were trying for session-id reuse, make a new
785 * SSL_SESSION so we don't stuff up other people */
787 if (s->session->session_id_length > 0)
789 if (!ssl_get_new_session(s,0))
791 al=SSL_AD_INTERNAL_ERROR;
795 s->session->session_id_length=j;
796 memcpy(s->session->session_id,p,j); /* j could be 0 */
799 c=ssl_get_cipher_by_char(s,p);
803 al=SSL_AD_ILLEGAL_PARAMETER;
804 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
807 p+=ssl_put_cipher_by_char(s,NULL,NULL);
809 sk=ssl_get_ciphers_by_id(s);
810 i=sk_SSL_CIPHER_find(sk,c);
813 /* we did not say we would use this cipher */
814 al=SSL_AD_ILLEGAL_PARAMETER;
815 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
819 /* Depending on the session caching (internal/external), the cipher
820 and/or cipher_id values may not be set. Make sure that
821 cipher_id is set and use it for comparison. */
822 if (s->session->cipher)
823 s->session->cipher_id = s->session->cipher->id;
824 if (s->hit && (s->session->cipher_id != c->id))
826 /* Workaround is now obsolete */
829 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
832 al=SSL_AD_ILLEGAL_PARAMETER;
833 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
837 s->s3->tmp.new_cipher=c;
839 /* lets get the compression algorithm */
841 #ifdef OPENSSL_NO_COMP
844 al=SSL_AD_ILLEGAL_PARAMETER;
845 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
853 comp=ssl3_comp_find(s->ctx->comp_methods,j);
855 if ((j != 0) && (comp == NULL))
857 al=SSL_AD_ILLEGAL_PARAMETER;
858 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
863 s->s3->tmp.new_compression=comp;
866 #ifndef OPENSSL_NO_TLSEXT
868 if (s->version >= SSL3_VERSION)
870 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
872 /* 'al' set by ssl_parse_serverhello_tlsext */
873 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
876 if (ssl_check_serverhello_tlsext(s) <= 0)
878 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
887 /* wrong packet length */
888 al=SSL_AD_DECODE_ERROR;
889 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
895 ssl3_send_alert(s,SSL3_AL_FATAL,al);
896 #ifndef OPENSSL_NO_TLSEXT
902 int ssl3_get_server_certificate(SSL *s)
905 unsigned long n,nc,llen,l;
907 const unsigned char *q,*p;
909 STACK_OF(X509) *sk=NULL;
912 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
914 n=s->method->ssl_get_message(s,
921 if (!ok) return((int)n);
923 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
924 ((s->s3->tmp.new_cipher->algorithms & SSL_aKRB5) &&
925 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
927 s->s3->tmp.reuse_message=1;
931 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
933 al=SSL_AD_UNEXPECTED_MESSAGE;
934 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
937 p=d=(unsigned char *)s->init_msg;
939 if ((sk=sk_X509_new_null()) == NULL)
941 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
948 al=SSL_AD_DECODE_ERROR;
949 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
952 for (nc=0; nc<llen; )
957 al=SSL_AD_DECODE_ERROR;
958 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
963 x=d2i_X509(NULL,&q,l);
966 al=SSL_AD_BAD_CERTIFICATE;
967 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
972 al=SSL_AD_DECODE_ERROR;
973 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
976 if (!sk_X509_push(sk,x))
978 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
986 i=ssl_verify_cert_chain(s,sk);
987 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
988 #ifndef OPENSSL_NO_KRB5
989 && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK))
990 != (SSL_aKRB5|SSL_kKRB5)
991 #endif /* OPENSSL_NO_KRB5 */
994 al=ssl_verify_alarm_type(s->verify_result);
995 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
998 ERR_clear_error(); /* but we keep s->verify_result */
1000 sc=ssl_sess_cert_new();
1001 if (sc == NULL) goto err;
1003 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1004 s->session->sess_cert=sc;
1007 /* Inconsistency alert: cert_chain does include the peer's
1008 * certificate, which we don't include in s3_srvr.c */
1009 x=sk_X509_value(sk,0);
1011 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1013 pkey=X509_get_pubkey(x);
1015 /* VRS: allow null cert if auth == KRB5 */
1016 need_cert = ((s->s3->tmp.new_cipher->algorithms
1017 & (SSL_MKEY_MASK|SSL_AUTH_MASK))
1018 == (SSL_aKRB5|SSL_kKRB5))? 0: 1;
1021 printf("pkey,x = %p, %p\n", (void *)pkey,(void *)x);
1022 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1023 printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name,
1024 s->s3->tmp.new_cipher->algorithms, need_cert);
1025 #endif /* KSSL_DEBUG */
1027 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1031 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1032 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1036 i=ssl_cert_type(x,pkey);
1037 if (need_cert && i < 0)
1041 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1042 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1048 sc->peer_cert_type=i;
1049 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1050 /* Why would the following ever happen?
1051 * We just created sc a couple of lines ago. */
1052 if (sc->peer_pkeys[i].x509 != NULL)
1053 X509_free(sc->peer_pkeys[i].x509);
1054 sc->peer_pkeys[i].x509=x;
1055 sc->peer_key= &(sc->peer_pkeys[i]);
1057 if (s->session->peer != NULL)
1058 X509_free(s->session->peer);
1059 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1064 sc->peer_cert_type=i;
1067 if (s->session->peer != NULL)
1068 X509_free(s->session->peer);
1069 s->session->peer=NULL;
1071 s->session->verify_result = s->verify_result;
1079 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1082 EVP_PKEY_free(pkey);
1084 sk_X509_pop_free(sk,X509_free);
1088 int ssl3_get_key_exchange(SSL *s)
1090 #ifndef OPENSSL_NO_RSA
1091 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1094 unsigned char *param,*p;
1095 int al,i,j,param_len,ok;
1097 EVP_PKEY *pkey=NULL;
1098 #ifndef OPENSSL_NO_RSA
1101 #ifndef OPENSSL_NO_DH
1104 #ifndef OPENSSL_NO_ECDH
1105 EC_KEY *ecdh = NULL;
1106 BN_CTX *bn_ctx = NULL;
1107 EC_POINT *srvr_ecpoint = NULL;
1109 int encoded_pt_len = 0;
1112 /* use same message size as in ssl3_get_certificate_request()
1113 * as ServerKeyExchange message may be skipped */
1114 n=s->method->ssl_get_message(s,
1115 SSL3_ST_CR_KEY_EXCH_A,
1116 SSL3_ST_CR_KEY_EXCH_B,
1121 if (!ok) return((int)n);
1123 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1125 s->s3->tmp.reuse_message=1;
1129 param=p=(unsigned char *)s->init_msg;
1131 if (s->session->sess_cert != NULL)
1133 #ifndef OPENSSL_NO_RSA
1134 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1136 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1137 s->session->sess_cert->peer_rsa_tmp=NULL;
1140 #ifndef OPENSSL_NO_DH
1141 if (s->session->sess_cert->peer_dh_tmp)
1143 DH_free(s->session->sess_cert->peer_dh_tmp);
1144 s->session->sess_cert->peer_dh_tmp=NULL;
1147 #ifndef OPENSSL_NO_ECDH
1148 if (s->session->sess_cert->peer_ecdh_tmp)
1150 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1151 s->session->sess_cert->peer_ecdh_tmp=NULL;
1157 s->session->sess_cert=ssl_sess_cert_new();
1161 alg=s->s3->tmp.new_cipher->algorithms;
1162 EVP_MD_CTX_init(&md_ctx);
1164 #ifndef OPENSSL_NO_RSA
1167 if ((rsa=RSA_new()) == NULL)
1169 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1176 al=SSL_AD_DECODE_ERROR;
1177 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1180 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1182 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1191 al=SSL_AD_DECODE_ERROR;
1192 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1195 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1197 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1203 /* this should be because we are using an export cipher */
1205 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1208 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1211 s->session->sess_cert->peer_rsa_tmp=rsa;
1214 #else /* OPENSSL_NO_RSA */
1218 #ifndef OPENSSL_NO_DH
1219 else if (alg & SSL_kEDH)
1221 if ((dh=DH_new()) == NULL)
1223 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1230 al=SSL_AD_DECODE_ERROR;
1231 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1234 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1236 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1245 al=SSL_AD_DECODE_ERROR;
1246 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1249 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1251 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1260 al=SSL_AD_DECODE_ERROR;
1261 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1264 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1266 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1272 #ifndef OPENSSL_NO_RSA
1274 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1279 #ifndef OPENSSL_NO_DSA
1280 else if (alg & SSL_aDSS)
1281 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1283 /* else anonymous DH, so no certificate or pkey. */
1285 s->session->sess_cert->peer_dh_tmp=dh;
1288 else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
1290 al=SSL_AD_ILLEGAL_PARAMETER;
1291 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1294 #endif /* !OPENSSL_NO_DH */
1296 #ifndef OPENSSL_NO_ECDH
1297 else if (alg & SSL_kECDHE)
1300 const EC_GROUP *group;
1302 if ((ecdh=EC_KEY_new()) == NULL)
1304 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1308 /* Extract elliptic curve parameters and the
1309 * server's ephemeral ECDH public key.
1310 * Keep accumulating lengths of various components in
1311 * param_len and make sure it never exceeds n.
1314 /* XXX: For now we only support named (not generic) curves
1315 * and the ECParameters in this case is just three bytes.
1318 if ((param_len > n) ||
1319 (*p != NAMED_CURVE_TYPE) ||
1320 ((curve_nid = curve_id2nid(*(p + 2))) == 0))
1322 al=SSL_AD_INTERNAL_ERROR;
1323 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1327 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1330 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1333 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1335 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1338 EC_GROUP_free(ngroup);
1340 group = EC_KEY_get0_group(ecdh);
1342 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1343 (EC_GROUP_get_degree(group) > 163))
1345 al=SSL_AD_EXPORT_RESTRICTION;
1346 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1352 /* Next, get the encoded ECPoint */
1353 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1354 ((bn_ctx = BN_CTX_new()) == NULL))
1356 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1360 encoded_pt_len = *p; /* length of encoded point */
1362 param_len += (1 + encoded_pt_len);
1363 if ((param_len > n) ||
1364 (EC_POINT_oct2point(group, srvr_ecpoint,
1365 p, encoded_pt_len, bn_ctx) == 0))
1367 al=SSL_AD_DECODE_ERROR;
1368 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1375 /* The ECC/TLS specification does not mention
1376 * the use of DSA to sign ECParameters in the server
1377 * key exchange message. We do support RSA and ECDSA.
1380 #ifndef OPENSSL_NO_RSA
1381 else if (alg & SSL_aRSA)
1382 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1384 #ifndef OPENSSL_NO_ECDSA
1385 else if (alg & SSL_aECDSA)
1386 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1388 /* else anonymous ECDH, so no certificate or pkey. */
1389 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1390 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1392 BN_CTX_free(bn_ctx);
1394 EC_POINT_free(srvr_ecpoint);
1395 srvr_ecpoint = NULL;
1397 else if (alg & SSL_kECDH)
1399 al=SSL_AD_UNEXPECTED_MESSAGE;
1400 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1403 #endif /* !OPENSSL_NO_ECDH */
1406 al=SSL_AD_HANDSHAKE_FAILURE;
1407 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1412 /* p points to the next byte, there are 'n' bytes left */
1414 /* if it was signed, check the signature */
1419 j=EVP_PKEY_size(pkey);
1421 if ((i != n) || (n > j) || (n <= 0))
1423 /* wrong packet length */
1424 al=SSL_AD_DECODE_ERROR;
1425 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1429 #ifndef OPENSSL_NO_RSA
1430 if (pkey->type == EVP_PKEY_RSA)
1436 for (num=2; num > 0; num--)
1438 EVP_MD_CTX_set_flags(&md_ctx,
1439 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1440 EVP_DigestInit_ex(&md_ctx,(num == 2)
1441 ?s->ctx->md5:s->ctx->sha1, NULL);
1442 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1443 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1444 EVP_DigestUpdate(&md_ctx,param,param_len);
1445 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1449 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1453 al=SSL_AD_DECRYPT_ERROR;
1454 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1460 al=SSL_AD_DECRYPT_ERROR;
1461 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1467 #ifndef OPENSSL_NO_DSA
1468 if (pkey->type == EVP_PKEY_DSA)
1471 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1472 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1473 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1474 EVP_VerifyUpdate(&md_ctx,param,param_len);
1475 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1478 al=SSL_AD_DECRYPT_ERROR;
1479 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1485 #ifndef OPENSSL_NO_ECDSA
1486 if (pkey->type == EVP_PKEY_EC)
1488 /* let's do ECDSA */
1489 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1490 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1491 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1492 EVP_VerifyUpdate(&md_ctx,param,param_len);
1493 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1496 al=SSL_AD_DECRYPT_ERROR;
1497 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1504 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1510 /* still data left over */
1511 if (!(alg & SSL_aNULL))
1513 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1518 al=SSL_AD_DECODE_ERROR;
1519 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1523 EVP_PKEY_free(pkey);
1524 EVP_MD_CTX_cleanup(&md_ctx);
1527 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1529 EVP_PKEY_free(pkey);
1530 #ifndef OPENSSL_NO_RSA
1534 #ifndef OPENSSL_NO_DH
1538 #ifndef OPENSSL_NO_ECDH
1539 BN_CTX_free(bn_ctx);
1540 EC_POINT_free(srvr_ecpoint);
1544 EVP_MD_CTX_cleanup(&md_ctx);
1548 int ssl3_get_certificate_request(SSL *s)
1551 unsigned long n,nc,l;
1552 unsigned int llen,ctype_num,i;
1554 const unsigned char *p,*q;
1556 STACK_OF(X509_NAME) *ca_sk=NULL;
1558 n=s->method->ssl_get_message(s,
1559 SSL3_ST_CR_CERT_REQ_A,
1560 SSL3_ST_CR_CERT_REQ_B,
1565 if (!ok) return((int)n);
1567 s->s3->tmp.cert_req=0;
1569 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1571 s->s3->tmp.reuse_message=1;
1575 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1577 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1578 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1582 /* TLS does not like anon-DH with client cert */
1583 if (s->version > SSL3_VERSION)
1585 l=s->s3->tmp.new_cipher->algorithms;
1588 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1589 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1594 p=d=(unsigned char *)s->init_msg;
1596 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1598 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1602 /* get the certificate types */
1604 if (ctype_num > SSL3_CT_NUMBER)
1605 ctype_num=SSL3_CT_NUMBER;
1606 for (i=0; i<ctype_num; i++)
1607 s->s3->tmp.ctype[i]= p[i];
1610 /* get the CA RDNs */
1615 out=fopen("/tmp/vsign.der","w");
1616 fwrite(p,1,llen,out);
1621 if ((llen+ctype_num+2+1) != n)
1623 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1624 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1628 for (nc=0; nc<llen; )
1631 if ((l+nc+2) > llen)
1633 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1634 goto cont; /* netscape bugs */
1635 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1636 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1642 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1644 /* If netscape tolerance is on, ignore errors */
1645 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1649 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1650 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1657 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1658 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1661 if (!sk_X509_NAME_push(ca_sk,xn))
1663 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1677 /* we should setup a certificate to return.... */
1678 s->s3->tmp.cert_req=1;
1679 s->s3->tmp.ctype_num=ctype_num;
1680 if (s->s3->tmp.ca_names != NULL)
1681 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1682 s->s3->tmp.ca_names=ca_sk;
1687 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1691 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1693 return(X509_NAME_cmp(*a,*b));
1695 #ifndef OPENSSL_NO_TLSEXT
1696 int ssl3_get_new_session_ticket(SSL *s)
1698 int ok,al,ret=0, ticklen;
1700 const unsigned char *p;
1703 n=s->method->ssl_get_message(s,
1704 SSL3_ST_CR_SESSION_TICKET_A,
1705 SSL3_ST_CR_SESSION_TICKET_B,
1713 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1715 s->s3->tmp.reuse_message=1;
1718 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1720 al=SSL_AD_UNEXPECTED_MESSAGE;
1721 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1726 /* need at least ticket_lifetime_hint + ticket length */
1727 al = SSL_AD_DECODE_ERROR;
1728 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1732 p=d=(unsigned char *)s->init_msg;
1733 n2l(p, s->session->tlsext_tick_lifetime_hint);
1735 /* ticket_lifetime_hint + ticket_length + ticket */
1736 if (ticklen + 6 != n)
1738 al = SSL_AD_DECODE_ERROR;
1739 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1742 if (s->session->tlsext_tick)
1744 OPENSSL_free(s->session->tlsext_tick);
1745 s->session->tlsext_ticklen = 0;
1747 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1748 if (!s->session->tlsext_tick)
1750 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1753 memcpy(s->session->tlsext_tick, p, ticklen);
1754 s->session->tlsext_ticklen = ticklen;
1755 /* There are two ways to detect a resumed ticket sesion.
1756 * One is to set an appropriate session ID and then the server
1757 * must return a match in ServerHello. This allows the normal
1758 * client session ID matching to work and we know much
1759 * earlier that the ticket has been accepted.
1761 * The other way is to set zero length session ID when the
1762 * ticket is presented and rely on the handshake to determine
1763 * session resumption.
1765 * We choose the former approach because this fits in with
1766 * assumptions elsewhere in OpenSSL. The session ID is set
1767 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
1770 EVP_Digest(p, ticklen,
1771 s->session->session_id, &s->session->session_id_length,
1772 #ifndef OPENSSL_NO_SHA256
1773 EVP_sha256(), NULL);
1780 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1785 int ssl3_get_cert_status(SSL *s)
1788 unsigned long resplen;
1790 const unsigned char *p;
1792 n=s->method->ssl_get_message(s,
1793 SSL3_ST_CR_CERT_STATUS_A,
1794 SSL3_ST_CR_CERT_STATUS_B,
1795 SSL3_MT_CERTIFICATE_STATUS,
1799 if (!ok) return((int)n);
1802 /* need at least status type + length */
1803 al = SSL_AD_DECODE_ERROR;
1804 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1807 p = (unsigned char *)s->init_msg;
1808 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1810 al = SSL_AD_DECODE_ERROR;
1811 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
1815 if (resplen + 4 != (unsigned long)n)
1817 al = SSL_AD_DECODE_ERROR;
1818 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1821 if (s->tlsext_ocsp_resp)
1822 OPENSSL_free(s->tlsext_ocsp_resp);
1823 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1824 if (!s->tlsext_ocsp_resp)
1826 al = SSL_AD_INTERNAL_ERROR;
1827 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1830 s->tlsext_ocsp_resplen = resplen;
1831 if (s->ctx->tlsext_status_cb)
1834 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1837 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1838 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
1843 al = SSL_AD_INTERNAL_ERROR;
1844 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1850 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1855 int ssl3_get_server_done(SSL *s)
1860 n=s->method->ssl_get_message(s,
1861 SSL3_ST_CR_SRVR_DONE_A,
1862 SSL3_ST_CR_SRVR_DONE_B,
1863 SSL3_MT_SERVER_DONE,
1864 30, /* should be very small, like 0 :-) */
1867 if (!ok) return((int)n);
1870 /* should contain no data */
1871 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1872 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1880 int ssl3_send_client_key_exchange(SSL *s)
1882 unsigned char *p,*d;
1885 #ifndef OPENSSL_NO_RSA
1887 EVP_PKEY *pkey=NULL;
1889 #ifndef OPENSSL_NO_KRB5
1891 #endif /* OPENSSL_NO_KRB5 */
1892 #ifndef OPENSSL_NO_ECDH
1893 EC_KEY *clnt_ecdh = NULL;
1894 const EC_POINT *srvr_ecpoint = NULL;
1895 EVP_PKEY *srvr_pub_pkey = NULL;
1896 unsigned char *encodedPoint = NULL;
1897 int encoded_pt_len = 0;
1898 BN_CTX * bn_ctx = NULL;
1901 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1903 d=(unsigned char *)s->init_buf->data;
1906 l=s->s3->tmp.new_cipher->algorithms;
1908 /* Fool emacs indentation */
1910 #ifndef OPENSSL_NO_RSA
1911 else if (l & SSL_kRSA)
1914 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1916 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1917 rsa=s->session->sess_cert->peer_rsa_tmp;
1920 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1921 if ((pkey == NULL) ||
1922 (pkey->type != EVP_PKEY_RSA) ||
1923 (pkey->pkey.rsa == NULL))
1925 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1929 EVP_PKEY_free(pkey);
1932 tmp_buf[0]=s->client_version>>8;
1933 tmp_buf[1]=s->client_version&0xff;
1934 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1937 s->session->master_key_length=sizeof tmp_buf;
1940 /* Fix buf for TLS and beyond */
1941 if (s->version > SSL3_VERSION)
1943 n=RSA_public_encrypt(sizeof tmp_buf,
1944 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1946 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1947 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1951 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1955 /* Fix buf for TLS and beyond */
1956 if (s->version > SSL3_VERSION)
1962 s->session->master_key_length=
1963 s->method->ssl3_enc->generate_master_secret(s,
1964 s->session->master_key,
1965 tmp_buf,sizeof tmp_buf);
1966 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
1969 #ifndef OPENSSL_NO_KRB5
1970 else if (l & SSL_kKRB5)
1972 krb5_error_code krb5rc;
1973 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1974 /* krb5_data krb5_ap_req; */
1975 krb5_data *enc_ticket;
1976 krb5_data authenticator, *authp = NULL;
1977 EVP_CIPHER_CTX ciph_ctx;
1978 EVP_CIPHER *enc = NULL;
1979 unsigned char iv[EVP_MAX_IV_LENGTH];
1980 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1981 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1982 + EVP_MAX_IV_LENGTH];
1983 int padl, outl = sizeof(epms);
1985 EVP_CIPHER_CTX_init(&ciph_ctx);
1988 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1990 #endif /* KSSL_DEBUG */
1994 if (KRB5SENDAUTH) authp = &authenticator;
1995 #endif /* KRB5SENDAUTH */
1997 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
1999 enc = kssl_map_enc(kssl_ctx->enctype);
2004 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2005 if (krb5rc && kssl_err.text)
2006 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2008 #endif /* KSSL_DEBUG */
2012 ssl3_send_alert(s,SSL3_AL_FATAL,
2013 SSL_AD_HANDSHAKE_FAILURE);
2014 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2019 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2020 ** in place of RFC 2712 KerberosWrapper, as in:
2022 ** Send ticket (copy to *p, set n = length)
2023 ** n = krb5_ap_req.length;
2024 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2025 ** if (krb5_ap_req.data)
2026 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2028 ** Now using real RFC 2712 KerberosWrapper
2029 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2030 ** Note: 2712 "opaque" types are here replaced
2031 ** with a 2-byte length followed by the value.
2033 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2034 ** Where "xx xx" = length bytes. Shown here with
2035 ** optional authenticator omitted.
2038 /* KerberosWrapper.Ticket */
2039 s2n(enc_ticket->length,p);
2040 memcpy(p, enc_ticket->data, enc_ticket->length);
2041 p+= enc_ticket->length;
2042 n = enc_ticket->length + 2;
2044 /* KerberosWrapper.Authenticator */
2045 if (authp && authp->length)
2047 s2n(authp->length,p);
2048 memcpy(p, authp->data, authp->length);
2050 n+= authp->length + 2;
2058 s2n(0,p);/* null authenticator length */
2062 tmp_buf[0]=s->client_version>>8;
2063 tmp_buf[1]=s->client_version&0xff;
2064 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2067 /* 20010420 VRS. Tried it this way; failed.
2068 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2069 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2070 ** kssl_ctx->length);
2071 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2074 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2075 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2077 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2079 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2081 if (outl > sizeof epms)
2083 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2086 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2088 /* KerberosWrapper.EncryptedPreMasterSecret */
2090 memcpy(p, epms, outl);
2094 s->session->master_key_length=
2095 s->method->ssl3_enc->generate_master_secret(s,
2096 s->session->master_key,
2097 tmp_buf, sizeof tmp_buf);
2099 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2100 OPENSSL_cleanse(epms, outl);
2103 #ifndef OPENSSL_NO_DH
2104 else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2106 DH *dh_srvr,*dh_clnt;
2108 if (s->session->sess_cert == NULL)
2110 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2111 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2115 if (s->session->sess_cert->peer_dh_tmp != NULL)
2116 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2119 /* we get them from the cert */
2120 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2121 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2125 /* generate a new random key */
2126 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2128 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2131 if (!DH_generate_key(dh_clnt))
2133 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2137 /* use the 'p' output buffer for the DH key, but
2138 * make sure to clear it out afterwards */
2140 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2144 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2148 /* generate master key from the result */
2149 s->session->master_key_length=
2150 s->method->ssl3_enc->generate_master_secret(s,
2151 s->session->master_key,p,n);
2155 /* send off the data */
2156 n=BN_num_bytes(dh_clnt->pub_key);
2158 BN_bn2bin(dh_clnt->pub_key,p);
2163 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2167 #ifndef OPENSSL_NO_ECDH
2168 else if ((l & SSL_kECDH) || (l & SSL_kECDHE))
2170 const EC_GROUP *srvr_group = NULL;
2172 int ecdh_clnt_cert = 0;
2175 /* Did we send out the client's
2176 * ECDH share for use in premaster
2177 * computation as part of client certificate?
2178 * If so, set ecdh_clnt_cert to 1.
2180 if ((l & SSL_kECDH) && (s->cert != NULL))
2182 /* XXX: For now, we do not support client
2183 * authentication using ECDH certificates.
2184 * To add such support, one needs to add
2185 * code that checks for appropriate
2186 * conditions and sets ecdh_clnt_cert to 1.
2187 * For example, the cert have an ECC
2188 * key on the same curve as the server's
2189 * and the key should be authorized for
2192 * One also needs to add code in ssl3_connect
2193 * to skip sending the certificate verify
2196 * if ((s->cert->key->privatekey != NULL) &&
2197 * (s->cert->key->privatekey->type ==
2198 * EVP_PKEY_EC) && ...)
2199 * ecdh_clnt_cert = 1;
2203 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2205 tkey = s->session->sess_cert->peer_ecdh_tmp;
2209 /* Get the Server Public Key from Cert */
2210 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2211 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2212 if ((srvr_pub_pkey == NULL) ||
2213 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2214 (srvr_pub_pkey->pkey.ec == NULL))
2216 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2217 ERR_R_INTERNAL_ERROR);
2221 tkey = srvr_pub_pkey->pkey.ec;
2224 srvr_group = EC_KEY_get0_group(tkey);
2225 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2227 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2229 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2230 ERR_R_INTERNAL_ERROR);
2234 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2236 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2240 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2242 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2247 /* Reuse key info from our certificate
2248 * We only need our private key to perform
2249 * the ECDH computation.
2251 const BIGNUM *priv_key;
2252 tkey = s->cert->key->privatekey->pkey.ec;
2253 priv_key = EC_KEY_get0_private_key(tkey);
2254 if (priv_key == NULL)
2256 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2259 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2261 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2267 /* Generate a new ECDH key pair */
2268 if (!(EC_KEY_generate_key(clnt_ecdh)))
2270 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2275 /* use the 'p' output buffer for the ECDH key, but
2276 * make sure to clear it out afterwards
2279 field_size = EC_GROUP_get_degree(srvr_group);
2280 if (field_size <= 0)
2282 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2286 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2289 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2294 /* generate master key from the result */
2295 s->session->master_key_length = s->method->ssl3_enc \
2296 -> generate_master_secret(s,
2297 s->session->master_key,
2300 memset(p, 0, n); /* clean up */
2304 /* Send empty client key exch message */
2309 /* First check the size of encoding and
2310 * allocate memory accordingly.
2313 EC_POINT_point2oct(srvr_group,
2314 EC_KEY_get0_public_key(clnt_ecdh),
2315 POINT_CONVERSION_UNCOMPRESSED,
2318 encodedPoint = (unsigned char *)
2319 OPENSSL_malloc(encoded_pt_len *
2320 sizeof(unsigned char));
2321 bn_ctx = BN_CTX_new();
2322 if ((encodedPoint == NULL) ||
2325 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2329 /* Encode the public key */
2330 n = EC_POINT_point2oct(srvr_group,
2331 EC_KEY_get0_public_key(clnt_ecdh),
2332 POINT_CONVERSION_UNCOMPRESSED,
2333 encodedPoint, encoded_pt_len, bn_ctx);
2335 *p = n; /* length of encoded point */
2336 /* Encoded point will be copied here */
2338 /* copy the point */
2339 memcpy((unsigned char *)p, encodedPoint, n);
2340 /* increment n to account for length field */
2344 /* Free allocated memory */
2345 BN_CTX_free(bn_ctx);
2346 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2347 if (clnt_ecdh != NULL)
2348 EC_KEY_free(clnt_ecdh);
2349 EVP_PKEY_free(srvr_pub_pkey);
2351 #endif /* !OPENSSL_NO_ECDH */
2354 ssl3_send_alert(s, SSL3_AL_FATAL,
2355 SSL_AD_HANDSHAKE_FAILURE);
2356 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2357 ERR_R_INTERNAL_ERROR);
2361 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2364 s->state=SSL3_ST_CW_KEY_EXCH_B;
2365 /* number of bytes to write */
2370 /* SSL3_ST_CW_KEY_EXCH_B */
2371 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2373 #ifndef OPENSSL_NO_ECDH
2374 BN_CTX_free(bn_ctx);
2375 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2376 if (clnt_ecdh != NULL)
2377 EC_KEY_free(clnt_ecdh);
2378 EVP_PKEY_free(srvr_pub_pkey);
2383 int ssl3_send_client_verify(SSL *s)
2385 unsigned char *p,*d;
2386 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2388 #ifndef OPENSSL_NO_RSA
2392 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2396 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2398 d=(unsigned char *)s->init_buf->data;
2400 pkey=s->cert->key->privatekey;
2402 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
2403 &(data[MD5_DIGEST_LENGTH]));
2405 #ifndef OPENSSL_NO_RSA
2406 if (pkey->type == EVP_PKEY_RSA)
2408 s->method->ssl3_enc->cert_verify_mac(s,
2409 &(s->s3->finish_dgst1),&(data[0]));
2410 if (RSA_sign(NID_md5_sha1, data,
2411 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2412 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2414 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2422 #ifndef OPENSSL_NO_DSA
2423 if (pkey->type == EVP_PKEY_DSA)
2425 if (!DSA_sign(pkey->save_type,
2426 &(data[MD5_DIGEST_LENGTH]),
2427 SHA_DIGEST_LENGTH,&(p[2]),
2428 (unsigned int *)&j,pkey->pkey.dsa))
2430 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2438 #ifndef OPENSSL_NO_ECDSA
2439 if (pkey->type == EVP_PKEY_EC)
2441 if (!ECDSA_sign(pkey->save_type,
2442 &(data[MD5_DIGEST_LENGTH]),
2443 SHA_DIGEST_LENGTH,&(p[2]),
2444 (unsigned int *)&j,pkey->pkey.ec))
2446 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2456 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2459 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2462 s->state=SSL3_ST_CW_CERT_VRFY_B;
2463 s->init_num=(int)n+4;
2466 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2471 int ssl3_send_client_certificate(SSL *s)
2474 EVP_PKEY *pkey=NULL;
2478 if (s->state == SSL3_ST_CW_CERT_A)
2480 if ((s->cert == NULL) ||
2481 (s->cert->key->x509 == NULL) ||
2482 (s->cert->key->privatekey == NULL))
2483 s->state=SSL3_ST_CW_CERT_B;
2485 s->state=SSL3_ST_CW_CERT_C;
2488 /* We need to get a client cert */
2489 if (s->state == SSL3_ST_CW_CERT_B)
2491 /* If we get an error, we need to
2492 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2493 * We then get retied later */
2495 i = ssl_do_client_cert_cb(s, &x509, &pkey);
2498 s->rwstate=SSL_X509_LOOKUP;
2501 s->rwstate=SSL_NOTHING;
2502 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2504 s->state=SSL3_ST_CW_CERT_B;
2505 if ( !SSL_use_certificate(s,x509) ||
2506 !SSL_use_PrivateKey(s,pkey))
2512 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2515 if (x509 != NULL) X509_free(x509);
2516 if (pkey != NULL) EVP_PKEY_free(pkey);
2519 if (s->version == SSL3_VERSION)
2521 s->s3->tmp.cert_req=0;
2522 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2527 s->s3->tmp.cert_req=2;
2531 /* Ok, we have a cert */
2532 s->state=SSL3_ST_CW_CERT_C;
2535 if (s->state == SSL3_ST_CW_CERT_C)
2537 s->state=SSL3_ST_CW_CERT_D;
2538 l=ssl3_output_cert_chain(s,
2539 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2543 /* SSL3_ST_CW_CERT_D */
2544 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2547 #define has_bits(i,m) (((i)&(m)) == (m))
2549 int ssl3_check_cert_and_algorithm(SSL *s)
2553 EVP_PKEY *pkey=NULL;
2555 #ifndef OPENSSL_NO_RSA
2558 #ifndef OPENSSL_NO_DH
2562 sc=s->session->sess_cert;
2564 algs=s->s3->tmp.new_cipher->algorithms;
2566 /* we don't have a certificate */
2567 if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5))
2572 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2576 #ifndef OPENSSL_NO_RSA
2577 rsa=s->session->sess_cert->peer_rsa_tmp;
2579 #ifndef OPENSSL_NO_DH
2580 dh=s->session->sess_cert->peer_dh_tmp;
2583 /* This is the passed certificate */
2585 idx=sc->peer_cert_type;
2586 #ifndef OPENSSL_NO_ECDH
2587 if (idx == SSL_PKEY_ECC)
2589 if (check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2590 s->s3->tmp.new_cipher) == 0)
2591 { /* check failed */
2592 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2601 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2602 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2603 EVP_PKEY_free(pkey);
2606 /* Check that we have a certificate if we require one */
2607 if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2609 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2612 #ifndef OPENSSL_NO_DSA
2613 else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2615 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2619 #ifndef OPENSSL_NO_RSA
2620 if ((algs & SSL_kRSA) &&
2621 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2623 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2627 #ifndef OPENSSL_NO_DH
2628 if ((algs & SSL_kEDH) &&
2629 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2631 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2634 else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2636 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2639 #ifndef OPENSSL_NO_DSA
2640 else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2642 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2648 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2650 #ifndef OPENSSL_NO_RSA
2651 if (algs & SSL_kRSA)
2654 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2656 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2662 #ifndef OPENSSL_NO_DH
2663 if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2666 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2668 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2675 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2681 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2687 #ifndef OPENSSL_NO_ECDH
2688 /* This is the complement of nid2curve_id in s3_srvr.c. */
2689 static int curve_id2nid(int curve_id)
2691 /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001)
2692 * (no changes in draft-ietf-tls-ecc-03.txt [June 2003]) */
2693 static int nid_list[26] =
2696 NID_sect163k1, /* sect163k1 (1) */
2697 NID_sect163r1, /* sect163r1 (2) */
2698 NID_sect163r2, /* sect163r2 (3) */
2699 NID_sect193r1, /* sect193r1 (4) */
2700 NID_sect193r2, /* sect193r2 (5) */
2701 NID_sect233k1, /* sect233k1 (6) */
2702 NID_sect233r1, /* sect233r1 (7) */
2703 NID_sect239k1, /* sect239k1 (8) */
2704 NID_sect283k1, /* sect283k1 (9) */
2705 NID_sect283r1, /* sect283r1 (10) */
2706 NID_sect409k1, /* sect409k1 (11) */
2707 NID_sect409r1, /* sect409r1 (12) */
2708 NID_sect571k1, /* sect571k1 (13) */
2709 NID_sect571r1, /* sect571r1 (14) */
2710 NID_secp160k1, /* secp160k1 (15) */
2711 NID_secp160r1, /* secp160r1 (16) */
2712 NID_secp160r2, /* secp160r2 (17) */
2713 NID_secp192k1, /* secp192k1 (18) */
2714 NID_X9_62_prime192v1, /* secp192r1 (19) */
2715 NID_secp224k1, /* secp224k1 (20) */
2716 NID_secp224r1, /* secp224r1 (21) */
2717 NID_secp256k1, /* secp256k1 (22) */
2718 NID_X9_62_prime256v1, /* secp256r1 (23) */
2719 NID_secp384r1, /* secp384r1 (24) */
2720 NID_secp521r1 /* secp521r1 (25) */
2723 if ((curve_id < 1) || (curve_id > 25)) return 0;
2725 return nid_list[curve_id];
2729 /* Check to see if handshake is full or resumed. Usually this is just a
2730 * case of checking to see if a cache hit has occurred. In the case of
2731 * session tickets we have to check the next message to be sure.
2734 #ifndef OPENSSL_NO_TLSEXT
2735 int ssl3_check_finished(SSL *s)
2739 /* If we have no ticket or session ID is non-zero length (a match of
2740 * a non-zero session length would never reach here) it cannot be a
2743 if (!s->session->tlsext_tick || s->session->session_id_length)
2745 /* this function is called when we really expect a Certificate
2746 * message, so permit appropriate message length */
2747 n=s->method->ssl_get_message(s,
2753 if (!ok) return((int)n);
2754 s->s3->tmp.reuse_message = 1;
2755 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
2756 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
2763 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
2766 #ifndef OPENSSL_NO_ENGINE
2767 if (s->ctx->client_cert_engine)
2769 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
2770 SSL_get_client_CA_list(s),
2771 px509, ppkey, NULL, NULL, NULL);
2776 if (s->ctx->client_cert_cb)
2777 i = s->ctx->client_cert_cb(s,px509,ppkey);