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) 1998-2007 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.
124 /* ====================================================================
125 * Copyright 2005 Nokia. All rights reserved.
127 * The portions of the attached software ("Contribution") is developed by
128 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
131 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
132 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
133 * support (see RFC 4279) to OpenSSL.
135 * No patent licenses or other rights except those expressly stated in
136 * the OpenSSL open source license shall be deemed granted or received
137 * expressly, by implication, estoppel, or otherwise.
139 * No assurances are provided by Nokia that the Contribution does not
140 * infringe the patent or other intellectual property rights of any third
141 * party or that the license provides you with all the necessary rights
142 * to make use of the Contribution.
144 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
145 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
146 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
147 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
152 #include "ssl_locl.h"
153 #include "kssl_lcl.h"
154 #include <openssl/buffer.h>
155 #include <openssl/rand.h>
156 #include <openssl/objects.h>
157 #include <openssl/evp.h>
158 #include <openssl/md5.h>
159 #ifndef OPENSSL_NO_DH
160 #include <openssl/dh.h>
162 #include <openssl/bn.h>
163 #ifndef OPENSSL_NO_ENGINE
164 #include <openssl/engine.h>
167 static const SSL_METHOD *ssl3_get_client_method(int ver);
168 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
170 static const SSL_METHOD *ssl3_get_client_method(int ver)
172 if (ver == SSL3_VERSION)
173 return(SSLv3_client_method());
178 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
179 ssl_undefined_function,
181 ssl3_get_client_method)
183 int ssl3_connect(SSL *s)
186 unsigned long Time=(unsigned long)time(NULL);
188 void (*cb)(const SSL *ssl,int type,int val)=NULL;
190 int new_state,state,skip=0;
192 RAND_add(&Time,sizeof(Time),0);
196 if (s->info_callback != NULL)
198 else if (s->ctx->info_callback != NULL)
199 cb=s->ctx->info_callback;
202 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
210 case SSL_ST_RENEGOTIATE:
212 s->state=SSL_ST_CONNECT;
213 s->ctx->stats.sess_connect_renegotiate++;
217 case SSL_ST_BEFORE|SSL_ST_CONNECT:
218 case SSL_ST_OK|SSL_ST_CONNECT:
221 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
223 if ((s->version & 0xff00 ) != 0x0300)
225 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
230 /* s->version=SSL3_VERSION; */
231 s->type=SSL_ST_CONNECT;
233 if (s->init_buf == NULL)
235 if ((buf=BUF_MEM_new()) == NULL)
240 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
249 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
251 /* setup buffing BIO */
252 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
254 /* don't push the buffering BIO quite yet */
256 ssl3_init_finished_mac(s);
258 s->state=SSL3_ST_CW_CLNT_HELLO_A;
259 s->ctx->stats.sess_connect++;
263 case SSL3_ST_CW_CLNT_HELLO_A:
264 case SSL3_ST_CW_CLNT_HELLO_B:
267 ret=ssl3_client_hello(s);
268 if (ret <= 0) goto end;
269 s->state=SSL3_ST_CR_SRVR_HELLO_A;
272 /* turn on buffering for the next lot of output */
273 if (s->bbio != s->wbio)
274 s->wbio=BIO_push(s->bbio,s->wbio);
278 case SSL3_ST_CR_SRVR_HELLO_A:
279 case SSL3_ST_CR_SRVR_HELLO_B:
280 ret=ssl3_get_server_hello(s);
281 if (ret <= 0) goto end;
284 s->state=SSL3_ST_CR_FINISHED_A;
286 s->state=SSL3_ST_CR_CERT_A;
290 case SSL3_ST_CR_CERT_A:
291 case SSL3_ST_CR_CERT_B:
292 #ifndef OPENSSL_NO_TLSEXT
293 ret=ssl3_check_finished(s);
294 if (ret <= 0) goto end;
298 if (s->tlsext_ticket_expected)
299 s->state=SSL3_ST_CR_SESSION_TICKET_A;
301 s->state=SSL3_ST_CR_FINISHED_A;
306 /* Check if it is anon DH/ECDH */
308 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
309 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
311 ret=ssl3_get_server_certificate(s);
312 if (ret <= 0) goto end;
313 #ifndef OPENSSL_NO_TLSEXT
314 if (s->tlsext_status_expected)
315 s->state=SSL3_ST_CR_CERT_STATUS_A;
317 s->state=SSL3_ST_CR_KEY_EXCH_A;
322 s->state=SSL3_ST_CR_KEY_EXCH_A;
329 s->state=SSL3_ST_CR_KEY_EXCH_A;
334 case SSL3_ST_CR_KEY_EXCH_A:
335 case SSL3_ST_CR_KEY_EXCH_B:
336 ret=ssl3_get_key_exchange(s);
337 if (ret <= 0) goto end;
338 s->state=SSL3_ST_CR_CERT_REQ_A;
341 /* at this point we check that we have the
342 * required stuff from the server */
343 if (!ssl3_check_cert_and_algorithm(s))
350 case SSL3_ST_CR_CERT_REQ_A:
351 case SSL3_ST_CR_CERT_REQ_B:
352 ret=ssl3_get_certificate_request(s);
353 if (ret <= 0) goto end;
354 s->state=SSL3_ST_CR_SRVR_DONE_A;
358 case SSL3_ST_CR_SRVR_DONE_A:
359 case SSL3_ST_CR_SRVR_DONE_B:
360 ret=ssl3_get_server_done(s);
361 if (ret <= 0) goto end;
362 if (s->s3->tmp.cert_req)
363 s->state=SSL3_ST_CW_CERT_A;
365 s->state=SSL3_ST_CW_KEY_EXCH_A;
370 case SSL3_ST_CW_CERT_A:
371 case SSL3_ST_CW_CERT_B:
372 case SSL3_ST_CW_CERT_C:
373 case SSL3_ST_CW_CERT_D:
374 ret=ssl3_send_client_certificate(s);
375 if (ret <= 0) goto end;
376 s->state=SSL3_ST_CW_KEY_EXCH_A;
380 case SSL3_ST_CW_KEY_EXCH_A:
381 case SSL3_ST_CW_KEY_EXCH_B:
382 ret=ssl3_send_client_key_exchange(s);
383 if (ret <= 0) goto end;
384 /* EAY EAY EAY need to check for DH fix cert
386 /* For TLS, cert_req is set to 2, so a cert chain
387 * of nothing is sent, but no verify packet is sent */
388 /* XXX: For now, we do not support client
389 * authentication in ECDH cipher suites with
390 * ECDH (rather than ECDSA) certificates.
391 * We need to skip the certificate verify
392 * message when client's ECDH public key is sent
393 * inside the client certificate.
395 if (s->s3->tmp.cert_req == 1)
397 s->state=SSL3_ST_CW_CERT_VRFY_A;
401 s->state=SSL3_ST_CW_CHANGE_A;
402 s->s3->change_cipher_spec=0;
404 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
406 s->state=SSL3_ST_CW_CHANGE_A;
407 s->s3->change_cipher_spec=0;
413 case SSL3_ST_CW_CERT_VRFY_A:
414 case SSL3_ST_CW_CERT_VRFY_B:
415 ret=ssl3_send_client_verify(s);
416 if (ret <= 0) goto end;
417 s->state=SSL3_ST_CW_CHANGE_A;
419 s->s3->change_cipher_spec=0;
422 case SSL3_ST_CW_CHANGE_A:
423 case SSL3_ST_CW_CHANGE_B:
424 ret=ssl3_send_change_cipher_spec(s,
425 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
426 if (ret <= 0) goto end;
427 s->state=SSL3_ST_CW_FINISHED_A;
430 s->session->cipher=s->s3->tmp.new_cipher;
431 #ifdef OPENSSL_NO_COMP
432 s->session->compress_meth=0;
434 if (s->s3->tmp.new_compression == NULL)
435 s->session->compress_meth=0;
437 s->session->compress_meth=
438 s->s3->tmp.new_compression->id;
440 if (!s->method->ssl3_enc->setup_key_block(s))
446 if (!s->method->ssl3_enc->change_cipher_state(s,
447 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
455 case SSL3_ST_CW_FINISHED_A:
456 case SSL3_ST_CW_FINISHED_B:
457 ret=ssl3_send_finished(s,
458 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
459 s->method->ssl3_enc->client_finished_label,
460 s->method->ssl3_enc->client_finished_label_len);
461 if (ret <= 0) goto end;
462 s->state=SSL3_ST_CW_FLUSH;
465 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
468 s->s3->tmp.next_state=SSL_ST_OK;
469 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
472 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
473 s->s3->delay_buf_pop_ret=0;
478 #ifndef OPENSSL_NO_TLSEXT
479 /* Allow NewSessionTicket if ticket expected */
480 if (s->tlsext_ticket_expected)
481 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
485 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
490 #ifndef OPENSSL_NO_TLSEXT
491 case SSL3_ST_CR_SESSION_TICKET_A:
492 case SSL3_ST_CR_SESSION_TICKET_B:
493 ret=ssl3_get_new_session_ticket(s);
494 if (ret <= 0) goto end;
495 s->state=SSL3_ST_CR_FINISHED_A;
499 case SSL3_ST_CR_CERT_STATUS_A:
500 case SSL3_ST_CR_CERT_STATUS_B:
501 ret=ssl3_get_cert_status(s);
502 if (ret <= 0) goto end;
503 s->state=SSL3_ST_CR_KEY_EXCH_A;
508 case SSL3_ST_CR_FINISHED_A:
509 case SSL3_ST_CR_FINISHED_B:
511 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
512 SSL3_ST_CR_FINISHED_B);
513 if (ret <= 0) goto end;
516 s->state=SSL3_ST_CW_CHANGE_A;
522 case SSL3_ST_CW_FLUSH:
523 /* number of bytes to be flushed */
524 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
527 s->rwstate=SSL_WRITING;
528 num1=BIO_flush(s->wbio);
529 if (num1 <= 0) { ret= -1; goto end; }
530 s->rwstate=SSL_NOTHING;
533 s->state=s->s3->tmp.next_state;
537 /* clean a few things up */
538 ssl3_cleanup_key_block(s);
540 if (s->init_buf != NULL)
542 BUF_MEM_free(s->init_buf);
546 /* If we are not 'joining' the last two packets,
547 * remove the buffering now */
548 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
549 ssl_free_wbio_buffer(s);
550 /* else do it later in ssl3_write */
555 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
556 if (s->hit) s->ctx->stats.sess_hit++;
560 s->handshake_func=ssl3_connect;
561 s->ctx->stats.sess_connect_good++;
563 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
569 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
575 /* did we do anything */
576 if (!s->s3->tmp.reuse_message && !skip)
580 if ((ret=BIO_flush(s->wbio)) <= 0)
584 if ((cb != NULL) && (s->state != state))
588 cb(s,SSL_CB_CONNECT_LOOP,1);
599 cb(s,SSL_CB_CONNECT_EXIT,ret);
604 int ssl3_client_hello(SSL *s)
609 unsigned long Time,l;
610 #ifndef OPENSSL_NO_COMP
615 buf=(unsigned char *)s->init_buf->data;
616 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
618 SSL_SESSION *sess = s->session;
619 if ((sess == NULL) ||
620 (sess->ssl_version != s->version) ||
621 #ifdef OPENSSL_NO_TLSEXT
622 !sess->session_id_length ||
624 (!sess->session_id_length && !sess->tlsext_tick) ||
626 (sess->not_resumable))
628 if (!ssl_get_new_session(s,0))
631 /* else use the pre-loaded session */
633 p=s->s3->client_random;
634 Time=(unsigned long)time(NULL); /* Time */
636 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
639 /* Do the message type and length last */
642 *(p++)=s->version>>8;
643 *(p++)=s->version&0xff;
644 s->client_version=s->version;
647 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
654 i=s->session->session_id_length;
658 if (i > (int)sizeof(s->session->session_id))
660 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
663 memcpy(p,s->session->session_id,i);
667 /* Ciphers supported */
668 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
671 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
678 #ifdef OPENSSL_NO_COMP
682 if ((s->options & SSL_OP_NO_COMPRESSION)
683 || !s->ctx->comp_methods)
686 j=sk_SSL_COMP_num(s->ctx->comp_methods);
690 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
694 *(p++)=0; /* Add the NULL method */
696 #ifndef OPENSSL_NO_TLSEXT
698 if (ssl_prepare_clienthello_tlsext(s) <= 0)
700 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
703 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
705 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
712 *(d++)=SSL3_MT_CLIENT_HELLO;
715 s->state=SSL3_ST_CW_CLNT_HELLO_B;
716 /* number of bytes to write */
721 /* SSL3_ST_CW_CLNT_HELLO_B */
722 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
727 int ssl3_get_server_hello(SSL *s)
729 STACK_OF(SSL_CIPHER) *sk;
735 #ifndef OPENSSL_NO_COMP
739 n=s->method->ssl_get_message(s,
740 SSL3_ST_CR_SRVR_HELLO_A,
741 SSL3_ST_CR_SRVR_HELLO_B,
746 if (!ok) return((int)n);
748 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
750 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
752 if ( s->d1->send_cookie == 0)
754 s->s3->tmp.reuse_message = 1;
757 else /* already sent a cookie */
759 al=SSL_AD_UNEXPECTED_MESSAGE;
760 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
766 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
768 al=SSL_AD_UNEXPECTED_MESSAGE;
769 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
773 d=p=(unsigned char *)s->init_msg;
775 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
777 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
778 s->version=(s->version&0xff00)|p[1];
779 al=SSL_AD_PROTOCOL_VERSION;
784 /* load the server hello data */
785 /* load the server random */
786 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
789 /* get the session-id */
792 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
794 al=SSL_AD_ILLEGAL_PARAMETER;
795 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
799 #ifndef OPENSSL_NO_TLSEXT
800 /* check if we want to resume the session based on external pre-shared secret */
801 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
803 SSL_CIPHER *pref_cipher=NULL;
804 s->session->master_key_length=sizeof(s->session->master_key);
805 if (s->tls_session_secret_cb(s, s->session->master_key,
806 &s->session->master_key_length,
808 s->tls_session_secret_cb_arg))
810 s->session->cipher = pref_cipher ?
811 pref_cipher : ssl_get_cipher_by_char(s, p+j);
814 #endif /* OPENSSL_NO_TLSEXT */
816 if (j != 0 && j == s->session->session_id_length
817 && memcmp(p,s->session->session_id,j) == 0)
819 if(s->sid_ctx_length != s->session->sid_ctx_length
820 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
822 /* actually a client application bug */
823 al=SSL_AD_ILLEGAL_PARAMETER;
824 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
829 else /* a miss or crap from the other end */
831 /* If we were trying for session-id reuse, make a new
832 * SSL_SESSION so we don't stuff up other people */
834 if (s->session->session_id_length > 0)
836 if (!ssl_get_new_session(s,0))
838 al=SSL_AD_INTERNAL_ERROR;
842 s->session->session_id_length=j;
843 memcpy(s->session->session_id,p,j); /* j could be 0 */
846 c=ssl_get_cipher_by_char(s,p);
850 al=SSL_AD_ILLEGAL_PARAMETER;
851 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
854 p+=ssl_put_cipher_by_char(s,NULL,NULL);
856 sk=ssl_get_ciphers_by_id(s);
857 i=sk_SSL_CIPHER_find(sk,c);
860 /* we did not say we would use this cipher */
861 al=SSL_AD_ILLEGAL_PARAMETER;
862 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
866 /* Depending on the session caching (internal/external), the cipher
867 and/or cipher_id values may not be set. Make sure that
868 cipher_id is set and use it for comparison. */
869 if (s->session->cipher)
870 s->session->cipher_id = s->session->cipher->id;
871 if (s->hit && (s->session->cipher_id != c->id))
874 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
876 al=SSL_AD_ILLEGAL_PARAMETER;
877 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
881 s->s3->tmp.new_cipher=c;
882 if (!ssl3_digest_cached_records(s))
885 /* lets get the compression algorithm */
887 #ifdef OPENSSL_NO_COMP
890 al=SSL_AD_ILLEGAL_PARAMETER;
891 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
896 if ((j == 0) || (s->options & SSL_OP_NO_COMPRESSION))
899 comp=ssl3_comp_find(s->ctx->comp_methods,j);
901 if ((j != 0) && (comp == NULL))
903 al=SSL_AD_ILLEGAL_PARAMETER;
904 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
909 s->s3->tmp.new_compression=comp;
913 #ifndef OPENSSL_NO_TLSEXT
915 if (s->version > SSL3_VERSION)
917 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
919 /* 'al' set by ssl_parse_serverhello_tlsext */
920 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
923 if (ssl_check_serverhello_tlsext(s) <= 0)
925 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
933 /* wrong packet length */
934 al=SSL_AD_DECODE_ERROR;
935 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
941 ssl3_send_alert(s,SSL3_AL_FATAL,al);
946 int ssl3_get_server_certificate(SSL *s)
949 unsigned long n,nc,llen,l;
951 const unsigned char *q,*p;
953 STACK_OF(X509) *sk=NULL;
956 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
958 n=s->method->ssl_get_message(s,
965 if (!ok) return((int)n);
967 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
969 s->s3->tmp.reuse_message=1;
973 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
975 al=SSL_AD_UNEXPECTED_MESSAGE;
976 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
979 p=d=(unsigned char *)s->init_msg;
981 if ((sk=sk_X509_new_null()) == NULL)
983 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
990 al=SSL_AD_DECODE_ERROR;
991 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
994 for (nc=0; nc<llen; )
999 al=SSL_AD_DECODE_ERROR;
1000 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1005 x=d2i_X509(NULL,&q,l);
1008 al=SSL_AD_BAD_CERTIFICATE;
1009 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1014 al=SSL_AD_DECODE_ERROR;
1015 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1018 if (!sk_X509_push(sk,x))
1020 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1028 i=ssl_verify_cert_chain(s,sk);
1029 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1030 #ifndef OPENSSL_NO_KRB5
1031 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1032 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1033 #endif /* OPENSSL_NO_KRB5 */
1036 al=ssl_verify_alarm_type(s->verify_result);
1037 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1040 ERR_clear_error(); /* but we keep s->verify_result */
1042 sc=ssl_sess_cert_new();
1043 if (sc == NULL) goto err;
1045 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1046 s->session->sess_cert=sc;
1049 /* Inconsistency alert: cert_chain does include the peer's
1050 * certificate, which we don't include in s3_srvr.c */
1051 x=sk_X509_value(sk,0);
1053 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1055 pkey=X509_get_pubkey(x);
1057 /* VRS: allow null cert if auth == KRB5 */
1058 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1059 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1063 printf("pkey,x = %p, %p\n", pkey,x);
1064 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1065 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1066 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1067 #endif /* KSSL_DEBUG */
1069 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1073 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1074 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1078 i=ssl_cert_type(x,pkey);
1079 if (need_cert && i < 0)
1083 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1084 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1090 sc->peer_cert_type=i;
1091 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1092 /* Why would the following ever happen?
1093 * We just created sc a couple of lines ago. */
1094 if (sc->peer_pkeys[i].x509 != NULL)
1095 X509_free(sc->peer_pkeys[i].x509);
1096 sc->peer_pkeys[i].x509=x;
1097 sc->peer_key= &(sc->peer_pkeys[i]);
1099 if (s->session->peer != NULL)
1100 X509_free(s->session->peer);
1101 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1106 sc->peer_cert_type=i;
1109 if (s->session->peer != NULL)
1110 X509_free(s->session->peer);
1111 s->session->peer=NULL;
1113 s->session->verify_result = s->verify_result;
1121 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1124 EVP_PKEY_free(pkey);
1126 sk_X509_pop_free(sk,X509_free);
1130 int ssl3_get_key_exchange(SSL *s)
1132 #ifndef OPENSSL_NO_RSA
1133 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1136 unsigned char *param,*p;
1137 int al,i,j,param_len,ok;
1139 EVP_PKEY *pkey=NULL;
1140 #ifndef OPENSSL_NO_RSA
1143 #ifndef OPENSSL_NO_DH
1146 #ifndef OPENSSL_NO_ECDH
1147 EC_KEY *ecdh = NULL;
1148 BN_CTX *bn_ctx = NULL;
1149 EC_POINT *srvr_ecpoint = NULL;
1151 int encoded_pt_len = 0;
1154 /* use same message size as in ssl3_get_certificate_request()
1155 * as ServerKeyExchange message may be skipped */
1156 n=s->method->ssl_get_message(s,
1157 SSL3_ST_CR_KEY_EXCH_A,
1158 SSL3_ST_CR_KEY_EXCH_B,
1162 if (!ok) return((int)n);
1164 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1166 #ifndef OPENSSL_NO_PSK
1167 /* In plain PSK ciphersuite, ServerKeyExchange can be
1168 omitted if no identity hint is sent. Set
1169 session->sess_cert anyway to avoid problems
1171 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1173 s->session->sess_cert=ssl_sess_cert_new();
1174 if (s->ctx->psk_identity_hint)
1175 OPENSSL_free(s->ctx->psk_identity_hint);
1176 s->ctx->psk_identity_hint = NULL;
1179 s->s3->tmp.reuse_message=1;
1183 param=p=(unsigned char *)s->init_msg;
1184 if (s->session->sess_cert != NULL)
1186 #ifndef OPENSSL_NO_RSA
1187 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1189 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1190 s->session->sess_cert->peer_rsa_tmp=NULL;
1193 #ifndef OPENSSL_NO_DH
1194 if (s->session->sess_cert->peer_dh_tmp)
1196 DH_free(s->session->sess_cert->peer_dh_tmp);
1197 s->session->sess_cert->peer_dh_tmp=NULL;
1200 #ifndef OPENSSL_NO_ECDH
1201 if (s->session->sess_cert->peer_ecdh_tmp)
1203 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1204 s->session->sess_cert->peer_ecdh_tmp=NULL;
1210 s->session->sess_cert=ssl_sess_cert_new();
1214 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1215 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1216 EVP_MD_CTX_init(&md_ctx);
1218 #ifndef OPENSSL_NO_PSK
1219 if (alg_k & SSL_kPSK)
1221 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1223 al=SSL_AD_HANDSHAKE_FAILURE;
1226 /* Store PSK identity hint for later use, hint is used
1227 * in ssl3_send_client_key_exchange. Assume that the
1228 * maximum length of a PSK identity hint can be as
1229 * long as the maximum length of a PSK identity. */
1230 if (i > PSK_MAX_IDENTITY_LEN)
1232 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1233 SSL_R_DATA_LENGTH_TOO_LONG);
1238 al=SSL_AD_DECODE_ERROR;
1239 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1240 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1243 /* If received PSK identity hint contains NULL
1244 * characters, the hint is truncated from the first
1245 * NULL. p may not be ending with NULL, so create a
1246 * NULL-terminated string. */
1247 memcpy(tmp_id_hint, p, i);
1248 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1249 if (s->ctx->psk_identity_hint != NULL)
1250 OPENSSL_free(s->ctx->psk_identity_hint);
1251 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1252 if (s->ctx->psk_identity_hint == NULL)
1254 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1262 #endif /* !OPENSSL_NO_PSK */
1263 #ifndef OPENSSL_NO_RSA
1264 if (alg_k & SSL_kRSA)
1266 if ((rsa=RSA_new()) == NULL)
1268 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1275 al=SSL_AD_DECODE_ERROR;
1276 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1279 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1281 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1290 al=SSL_AD_DECODE_ERROR;
1291 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1294 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1296 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1302 /* this should be because we are using an export cipher */
1303 if (alg_a & SSL_aRSA)
1304 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1307 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1310 s->session->sess_cert->peer_rsa_tmp=rsa;
1313 #else /* OPENSSL_NO_RSA */
1317 #ifndef OPENSSL_NO_DH
1318 else if (alg_k & SSL_kEDH)
1320 if ((dh=DH_new()) == NULL)
1322 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1329 al=SSL_AD_DECODE_ERROR;
1330 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1333 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1335 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1344 al=SSL_AD_DECODE_ERROR;
1345 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1348 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1350 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1359 al=SSL_AD_DECODE_ERROR;
1360 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1363 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1365 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1371 #ifndef OPENSSL_NO_RSA
1372 if (alg_a & SSL_aRSA)
1373 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1378 #ifndef OPENSSL_NO_DSA
1379 else if (alg_a & SSL_aDSS)
1380 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1382 /* else anonymous DH, so no certificate or pkey. */
1384 s->session->sess_cert->peer_dh_tmp=dh;
1387 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1389 al=SSL_AD_ILLEGAL_PARAMETER;
1390 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1393 #endif /* !OPENSSL_NO_DH */
1395 #ifndef OPENSSL_NO_ECDH
1396 else if (alg_k & SSL_kEECDH)
1399 const EC_GROUP *group;
1401 if ((ecdh=EC_KEY_new()) == NULL)
1403 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1407 /* Extract elliptic curve parameters and the
1408 * server's ephemeral ECDH public key.
1409 * Keep accumulating lengths of various components in
1410 * param_len and make sure it never exceeds n.
1413 /* XXX: For now we only support named (not generic) curves
1414 * and the ECParameters in this case is just three bytes.
1417 if ((param_len > n) ||
1418 (*p != NAMED_CURVE_TYPE) ||
1419 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1421 al=SSL_AD_INTERNAL_ERROR;
1422 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1426 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1429 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1432 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1434 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1437 EC_GROUP_free(ngroup);
1439 group = EC_KEY_get0_group(ecdh);
1441 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1442 (EC_GROUP_get_degree(group) > 163))
1444 al=SSL_AD_EXPORT_RESTRICTION;
1445 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1451 /* Next, get the encoded ECPoint */
1452 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1453 ((bn_ctx = BN_CTX_new()) == NULL))
1455 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1459 encoded_pt_len = *p; /* length of encoded point */
1461 param_len += (1 + encoded_pt_len);
1462 if ((param_len > n) ||
1463 (EC_POINT_oct2point(group, srvr_ecpoint,
1464 p, encoded_pt_len, bn_ctx) == 0))
1466 al=SSL_AD_DECODE_ERROR;
1467 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1474 /* The ECC/TLS specification does not mention
1475 * the use of DSA to sign ECParameters in the server
1476 * key exchange message. We do support RSA and ECDSA.
1479 #ifndef OPENSSL_NO_RSA
1480 else if (alg_a & SSL_aRSA)
1481 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1483 #ifndef OPENSSL_NO_ECDSA
1484 else if (alg_a & SSL_aECDSA)
1485 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1487 /* else anonymous ECDH, so no certificate or pkey. */
1488 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1489 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1491 BN_CTX_free(bn_ctx);
1492 EC_POINT_free(srvr_ecpoint);
1493 srvr_ecpoint = NULL;
1497 al=SSL_AD_UNEXPECTED_MESSAGE;
1498 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1501 #endif /* !OPENSSL_NO_ECDH */
1504 /* p points to the next byte, there are 'n' bytes left */
1506 /* if it was signed, check the signature */
1511 j=EVP_PKEY_size(pkey);
1513 if ((i != n) || (n > j) || (n <= 0))
1515 /* wrong packet length */
1516 al=SSL_AD_DECODE_ERROR;
1517 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1521 #ifndef OPENSSL_NO_RSA
1522 if (pkey->type == EVP_PKEY_RSA)
1528 for (num=2; num > 0; num--)
1530 EVP_DigestInit_ex(&md_ctx,(num == 2)
1531 ?s->ctx->md5:s->ctx->sha1, NULL);
1532 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1533 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1534 EVP_DigestUpdate(&md_ctx,param,param_len);
1535 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1539 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1543 al=SSL_AD_DECRYPT_ERROR;
1544 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1550 al=SSL_AD_DECRYPT_ERROR;
1551 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1557 #ifndef OPENSSL_NO_DSA
1558 if (pkey->type == EVP_PKEY_DSA)
1561 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1562 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1563 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1564 EVP_VerifyUpdate(&md_ctx,param,param_len);
1565 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1568 al=SSL_AD_DECRYPT_ERROR;
1569 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1575 #ifndef OPENSSL_NO_ECDSA
1576 if (pkey->type == EVP_PKEY_EC)
1578 /* let's do ECDSA */
1579 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1580 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1581 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1582 EVP_VerifyUpdate(&md_ctx,param,param_len);
1583 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1586 al=SSL_AD_DECRYPT_ERROR;
1587 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1594 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1600 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1601 /* aNULL or kPSK do not need public keys */
1603 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1606 /* still data left over */
1609 al=SSL_AD_DECODE_ERROR;
1610 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1614 EVP_PKEY_free(pkey);
1615 EVP_MD_CTX_cleanup(&md_ctx);
1618 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1620 EVP_PKEY_free(pkey);
1621 #ifndef OPENSSL_NO_RSA
1625 #ifndef OPENSSL_NO_DH
1629 #ifndef OPENSSL_NO_ECDH
1630 BN_CTX_free(bn_ctx);
1631 EC_POINT_free(srvr_ecpoint);
1635 EVP_MD_CTX_cleanup(&md_ctx);
1639 int ssl3_get_certificate_request(SSL *s)
1642 unsigned long n,nc,l;
1643 unsigned int llen,ctype_num,i;
1645 const unsigned char *p,*q;
1647 STACK_OF(X509_NAME) *ca_sk=NULL;
1649 n=s->method->ssl_get_message(s,
1650 SSL3_ST_CR_CERT_REQ_A,
1651 SSL3_ST_CR_CERT_REQ_B,
1656 if (!ok) return((int)n);
1658 s->s3->tmp.cert_req=0;
1660 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1662 s->s3->tmp.reuse_message=1;
1666 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1668 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1669 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1673 /* TLS does not like anon-DH with client cert */
1674 if (s->version > SSL3_VERSION)
1676 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1678 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1679 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1684 p=d=(unsigned char *)s->init_msg;
1686 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1688 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1692 /* get the certificate types */
1694 if (ctype_num > SSL3_CT_NUMBER)
1695 ctype_num=SSL3_CT_NUMBER;
1696 for (i=0; i<ctype_num; i++)
1697 s->s3->tmp.ctype[i]= p[i];
1700 /* get the CA RDNs */
1705 out=fopen("/tmp/vsign.der","w");
1706 fwrite(p,1,llen,out);
1711 if ((llen+ctype_num+2+1) != n)
1713 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1714 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1718 for (nc=0; nc<llen; )
1721 if ((l+nc+2) > llen)
1723 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1724 goto cont; /* netscape bugs */
1725 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1726 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1732 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1734 /* If netscape tolerance is on, ignore errors */
1735 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1739 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1740 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1747 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1748 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1751 if (!sk_X509_NAME_push(ca_sk,xn))
1753 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1767 /* we should setup a certificate to return.... */
1768 s->s3->tmp.cert_req=1;
1769 s->s3->tmp.ctype_num=ctype_num;
1770 if (s->s3->tmp.ca_names != NULL)
1771 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1772 s->s3->tmp.ca_names=ca_sk;
1777 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1781 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1783 return(X509_NAME_cmp(*a,*b));
1785 #ifndef OPENSSL_NO_TLSEXT
1786 int ssl3_get_new_session_ticket(SSL *s)
1788 int ok,al,ret=0, ticklen;
1790 const unsigned char *p;
1793 n=s->method->ssl_get_message(s,
1794 SSL3_ST_CR_SESSION_TICKET_A,
1795 SSL3_ST_CR_SESSION_TICKET_B,
1803 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1805 s->s3->tmp.reuse_message=1;
1808 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1810 al=SSL_AD_UNEXPECTED_MESSAGE;
1811 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1816 /* need at least ticket_lifetime_hint + ticket length */
1817 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1818 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1822 p=d=(unsigned char *)s->init_msg;
1823 n2l(p, s->session->tlsext_tick_lifetime_hint);
1825 /* ticket_lifetime_hint + ticket_length + ticket */
1826 if (ticklen + 6 != n)
1828 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1829 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1832 if (s->session->tlsext_tick)
1834 OPENSSL_free(s->session->tlsext_tick);
1835 s->session->tlsext_ticklen = 0;
1837 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1838 if (!s->session->tlsext_tick)
1840 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1843 memcpy(s->session->tlsext_tick, p, ticklen);
1844 s->session->tlsext_ticklen = ticklen;
1845 /* There are two ways to detect a resumed ticket sesion.
1846 * One is to set an appropriate session ID and then the server
1847 * must return a match in ServerHello. This allows the normal
1848 * client session ID matching to work and we know much
1849 * earlier that the ticket has been accepted.
1851 * The other way is to set zero length session ID when the
1852 * ticket is presented and rely on the handshake to determine
1853 * session resumption.
1855 * We choose the former approach because this fits in with
1856 * assumptions elsewhere in OpenSSL. The session ID is set
1857 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
1860 EVP_Digest(p, ticklen,
1861 s->session->session_id, &s->session->session_id_length,
1862 #ifndef OPENSSL_NO_SHA256
1863 EVP_sha256(), NULL);
1870 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1875 int ssl3_get_cert_status(SSL *s)
1878 unsigned long resplen,n;
1879 const unsigned char *p;
1881 n=s->method->ssl_get_message(s,
1882 SSL3_ST_CR_CERT_STATUS_A,
1883 SSL3_ST_CR_CERT_STATUS_B,
1884 SSL3_MT_CERTIFICATE_STATUS,
1888 if (!ok) return((int)n);
1891 /* need at least status type + length */
1892 al = SSL_AD_DECODE_ERROR;
1893 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1896 p = (unsigned char *)s->init_msg;
1897 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1899 al = SSL_AD_DECODE_ERROR;
1900 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
1904 if (resplen + 4 != n)
1906 al = SSL_AD_DECODE_ERROR;
1907 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1910 if (s->tlsext_ocsp_resp)
1911 OPENSSL_free(s->tlsext_ocsp_resp);
1912 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1913 if (!s->tlsext_ocsp_resp)
1915 al = SSL_AD_INTERNAL_ERROR;
1916 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1919 s->tlsext_ocsp_resplen = resplen;
1920 if (s->ctx->tlsext_status_cb)
1923 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1926 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1927 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
1932 al = SSL_AD_INTERNAL_ERROR;
1933 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1939 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1944 int ssl3_get_server_done(SSL *s)
1949 n=s->method->ssl_get_message(s,
1950 SSL3_ST_CR_SRVR_DONE_A,
1951 SSL3_ST_CR_SRVR_DONE_B,
1952 SSL3_MT_SERVER_DONE,
1953 30, /* should be very small, like 0 :-) */
1956 if (!ok) return((int)n);
1959 /* should contain no data */
1960 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1961 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1969 int ssl3_send_client_key_exchange(SSL *s)
1971 unsigned char *p,*d;
1973 unsigned long alg_k;
1974 #ifndef OPENSSL_NO_RSA
1976 EVP_PKEY *pkey=NULL;
1978 #ifndef OPENSSL_NO_KRB5
1980 #endif /* OPENSSL_NO_KRB5 */
1981 #ifndef OPENSSL_NO_ECDH
1982 EC_KEY *clnt_ecdh = NULL;
1983 const EC_POINT *srvr_ecpoint = NULL;
1984 EVP_PKEY *srvr_pub_pkey = NULL;
1985 unsigned char *encodedPoint = NULL;
1986 int encoded_pt_len = 0;
1987 BN_CTX * bn_ctx = NULL;
1990 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1992 d=(unsigned char *)s->init_buf->data;
1995 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1997 /* Fool emacs indentation */
1999 #ifndef OPENSSL_NO_RSA
2000 else if (alg_k & SSL_kRSA)
2003 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2005 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2006 rsa=s->session->sess_cert->peer_rsa_tmp;
2009 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2010 if ((pkey == NULL) ||
2011 (pkey->type != EVP_PKEY_RSA) ||
2012 (pkey->pkey.rsa == NULL))
2014 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2018 EVP_PKEY_free(pkey);
2021 tmp_buf[0]=s->client_version>>8;
2022 tmp_buf[1]=s->client_version&0xff;
2023 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2026 s->session->master_key_length=sizeof tmp_buf;
2029 /* Fix buf for TLS and beyond */
2030 if (s->version > SSL3_VERSION)
2032 n=RSA_public_encrypt(sizeof tmp_buf,
2033 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2035 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2036 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2040 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2044 /* Fix buf for TLS and beyond */
2045 if (s->version > SSL3_VERSION)
2051 s->session->master_key_length=
2052 s->method->ssl3_enc->generate_master_secret(s,
2053 s->session->master_key,
2054 tmp_buf,sizeof tmp_buf);
2055 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2058 #ifndef OPENSSL_NO_KRB5
2059 else if (alg_k & SSL_kKRB5)
2061 krb5_error_code krb5rc;
2062 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2063 /* krb5_data krb5_ap_req; */
2064 krb5_data *enc_ticket;
2065 krb5_data authenticator, *authp = NULL;
2066 EVP_CIPHER_CTX ciph_ctx;
2067 const EVP_CIPHER *enc = NULL;
2068 unsigned char iv[EVP_MAX_IV_LENGTH];
2069 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2070 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2071 + EVP_MAX_IV_LENGTH];
2072 int padl, outl = sizeof(epms);
2074 EVP_CIPHER_CTX_init(&ciph_ctx);
2077 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2079 #endif /* KSSL_DEBUG */
2083 if (KRB5SENDAUTH) authp = &authenticator;
2084 #endif /* KRB5SENDAUTH */
2086 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2088 enc = kssl_map_enc(kssl_ctx->enctype);
2093 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2094 if (krb5rc && kssl_err.text)
2095 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2097 #endif /* KSSL_DEBUG */
2101 ssl3_send_alert(s,SSL3_AL_FATAL,
2102 SSL_AD_HANDSHAKE_FAILURE);
2103 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2108 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2109 ** in place of RFC 2712 KerberosWrapper, as in:
2111 ** Send ticket (copy to *p, set n = length)
2112 ** n = krb5_ap_req.length;
2113 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2114 ** if (krb5_ap_req.data)
2115 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2117 ** Now using real RFC 2712 KerberosWrapper
2118 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2119 ** Note: 2712 "opaque" types are here replaced
2120 ** with a 2-byte length followed by the value.
2122 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2123 ** Where "xx xx" = length bytes. Shown here with
2124 ** optional authenticator omitted.
2127 /* KerberosWrapper.Ticket */
2128 s2n(enc_ticket->length,p);
2129 memcpy(p, enc_ticket->data, enc_ticket->length);
2130 p+= enc_ticket->length;
2131 n = enc_ticket->length + 2;
2133 /* KerberosWrapper.Authenticator */
2134 if (authp && authp->length)
2136 s2n(authp->length,p);
2137 memcpy(p, authp->data, authp->length);
2139 n+= authp->length + 2;
2147 s2n(0,p);/* null authenticator length */
2151 tmp_buf[0]=s->client_version>>8;
2152 tmp_buf[1]=s->client_version&0xff;
2153 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2156 /* 20010420 VRS. Tried it this way; failed.
2157 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2158 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2159 ** kssl_ctx->length);
2160 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2163 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2164 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2166 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2168 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2170 if (outl > (int)sizeof epms)
2172 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2175 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2177 /* KerberosWrapper.EncryptedPreMasterSecret */
2179 memcpy(p, epms, outl);
2183 s->session->master_key_length=
2184 s->method->ssl3_enc->generate_master_secret(s,
2185 s->session->master_key,
2186 tmp_buf, sizeof tmp_buf);
2188 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2189 OPENSSL_cleanse(epms, outl);
2192 #ifndef OPENSSL_NO_DH
2193 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2195 DH *dh_srvr,*dh_clnt;
2197 if (s->session->sess_cert == NULL)
2199 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2200 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2204 if (s->session->sess_cert->peer_dh_tmp != NULL)
2205 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2208 /* we get them from the cert */
2209 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2210 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2214 /* generate a new random key */
2215 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2217 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2220 if (!DH_generate_key(dh_clnt))
2222 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2226 /* use the 'p' output buffer for the DH key, but
2227 * make sure to clear it out afterwards */
2229 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2233 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2237 /* generate master key from the result */
2238 s->session->master_key_length=
2239 s->method->ssl3_enc->generate_master_secret(s,
2240 s->session->master_key,p,n);
2244 /* send off the data */
2245 n=BN_num_bytes(dh_clnt->pub_key);
2247 BN_bn2bin(dh_clnt->pub_key,p);
2252 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2256 #ifndef OPENSSL_NO_ECDH
2257 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2259 const EC_GROUP *srvr_group = NULL;
2261 int ecdh_clnt_cert = 0;
2264 /* Did we send out the client's
2265 * ECDH share for use in premaster
2266 * computation as part of client certificate?
2267 * If so, set ecdh_clnt_cert to 1.
2269 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2271 /* XXX: For now, we do not support client
2272 * authentication using ECDH certificates.
2273 * To add such support, one needs to add
2274 * code that checks for appropriate
2275 * conditions and sets ecdh_clnt_cert to 1.
2276 * For example, the cert have an ECC
2277 * key on the same curve as the server's
2278 * and the key should be authorized for
2281 * One also needs to add code in ssl3_connect
2282 * to skip sending the certificate verify
2285 * if ((s->cert->key->privatekey != NULL) &&
2286 * (s->cert->key->privatekey->type ==
2287 * EVP_PKEY_EC) && ...)
2288 * ecdh_clnt_cert = 1;
2292 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2294 tkey = s->session->sess_cert->peer_ecdh_tmp;
2298 /* Get the Server Public Key from Cert */
2299 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2300 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2301 if ((srvr_pub_pkey == NULL) ||
2302 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2303 (srvr_pub_pkey->pkey.ec == NULL))
2305 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2306 ERR_R_INTERNAL_ERROR);
2310 tkey = srvr_pub_pkey->pkey.ec;
2313 srvr_group = EC_KEY_get0_group(tkey);
2314 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2316 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2318 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2319 ERR_R_INTERNAL_ERROR);
2323 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2325 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2329 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2331 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2336 /* Reuse key info from our certificate
2337 * We only need our private key to perform
2338 * the ECDH computation.
2340 const BIGNUM *priv_key;
2341 tkey = s->cert->key->privatekey->pkey.ec;
2342 priv_key = EC_KEY_get0_private_key(tkey);
2343 if (priv_key == NULL)
2345 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2348 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2350 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2356 /* Generate a new ECDH key pair */
2357 if (!(EC_KEY_generate_key(clnt_ecdh)))
2359 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2364 /* use the 'p' output buffer for the ECDH key, but
2365 * make sure to clear it out afterwards
2368 field_size = EC_GROUP_get_degree(srvr_group);
2369 if (field_size <= 0)
2371 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2375 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2378 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2383 /* generate master key from the result */
2384 s->session->master_key_length = s->method->ssl3_enc \
2385 -> generate_master_secret(s,
2386 s->session->master_key,
2389 memset(p, 0, n); /* clean up */
2393 /* Send empty client key exch message */
2398 /* First check the size of encoding and
2399 * allocate memory accordingly.
2402 EC_POINT_point2oct(srvr_group,
2403 EC_KEY_get0_public_key(clnt_ecdh),
2404 POINT_CONVERSION_UNCOMPRESSED,
2407 encodedPoint = (unsigned char *)
2408 OPENSSL_malloc(encoded_pt_len *
2409 sizeof(unsigned char));
2410 bn_ctx = BN_CTX_new();
2411 if ((encodedPoint == NULL) ||
2414 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2418 /* Encode the public key */
2419 n = EC_POINT_point2oct(srvr_group,
2420 EC_KEY_get0_public_key(clnt_ecdh),
2421 POINT_CONVERSION_UNCOMPRESSED,
2422 encodedPoint, encoded_pt_len, bn_ctx);
2424 *p = n; /* length of encoded point */
2425 /* Encoded point will be copied here */
2427 /* copy the point */
2428 memcpy((unsigned char *)p, encodedPoint, n);
2429 /* increment n to account for length field */
2433 /* Free allocated memory */
2434 BN_CTX_free(bn_ctx);
2435 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2436 if (clnt_ecdh != NULL)
2437 EC_KEY_free(clnt_ecdh);
2438 EVP_PKEY_free(srvr_pub_pkey);
2440 #endif /* !OPENSSL_NO_ECDH */
2441 else if (alg_k & SSL_kGOST)
2443 /* GOST key exchange message creation */
2444 EVP_PKEY_CTX *pkey_ctx;
2447 unsigned int md_len;
2449 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2450 EVP_MD_CTX *ukm_hash;
2453 /* Get server sertificate PKEY and create ctx from it */
2454 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2456 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2458 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2462 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2463 /* If we have send a certificate, and certificate key
2465 * parameters match those of server certificate, use
2466 * certificate key for key exchange
2469 /* Otherwise, generate ephemeral key pair */
2471 EVP_PKEY_encrypt_init(pkey_ctx);
2472 /* Generate session key */
2473 RAND_bytes(premaster_secret,32);
2474 /* If we have client certificate, use its secret as peer key */
2475 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2476 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2477 /* If there was an error - just ignore it. Ephemeral key
2483 /* Compute shared IV and store it in algorithm-specific
2485 ukm_hash = EVP_MD_CTX_create();
2486 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2487 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2488 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2489 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2490 EVP_MD_CTX_destroy(ukm_hash);
2491 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2493 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2497 /* Make GOST keytransport blob message */
2498 /*Encapsulate it into sequence */
2499 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2501 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2502 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2509 *(p++)= msglen & 0xff;
2514 *(p++)= msglen & 0xff;
2517 memcpy(p, tmp, msglen);
2518 /* Check if pubkey from client certificate was used */
2519 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2521 /* Set flag "skip certificate verify" */
2522 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2524 EVP_PKEY_CTX_free(pkey_ctx);
2525 s->session->master_key_length=
2526 s->method->ssl3_enc->generate_master_secret(s,
2527 s->session->master_key,premaster_secret,32);
2528 EVP_PKEY_free(pub_key);
2531 #ifndef OPENSSL_NO_PSK
2532 else if (alg_k & SSL_kPSK)
2534 char identity[PSK_MAX_IDENTITY_LEN];
2535 unsigned char *t = NULL;
2536 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2537 unsigned int pre_ms_len = 0, psk_len = 0;
2541 if (s->psk_client_callback == NULL)
2543 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2544 SSL_R_PSK_NO_CLIENT_CB);
2548 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2549 identity, PSK_MAX_IDENTITY_LEN,
2550 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2551 if (psk_len > PSK_MAX_PSK_LEN)
2553 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2554 ERR_R_INTERNAL_ERROR);
2557 else if (psk_len == 0)
2559 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2560 SSL_R_PSK_IDENTITY_NOT_FOUND);
2564 /* create PSK pre_master_secret */
2565 pre_ms_len = 2+psk_len+2+psk_len;
2567 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2569 memset(t, 0, psk_len);
2573 if (s->session->psk_identity_hint != NULL)
2574 OPENSSL_free(s->session->psk_identity_hint);
2575 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2576 if (s->ctx->psk_identity_hint != NULL &&
2577 s->session->psk_identity_hint == NULL)
2579 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2580 ERR_R_MALLOC_FAILURE);
2584 if (s->session->psk_identity != NULL)
2585 OPENSSL_free(s->session->psk_identity);
2586 s->session->psk_identity = BUF_strdup(identity);
2587 if (s->session->psk_identity == NULL)
2589 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2590 ERR_R_MALLOC_FAILURE);
2594 s->session->master_key_length =
2595 s->method->ssl3_enc->generate_master_secret(s,
2596 s->session->master_key,
2597 psk_or_pre_ms, pre_ms_len);
2598 n = strlen(identity);
2600 memcpy(p, identity, n);
2604 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2605 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2608 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2615 ssl3_send_alert(s, SSL3_AL_FATAL,
2616 SSL_AD_HANDSHAKE_FAILURE);
2617 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2618 ERR_R_INTERNAL_ERROR);
2622 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2625 s->state=SSL3_ST_CW_KEY_EXCH_B;
2626 /* number of bytes to write */
2631 /* SSL3_ST_CW_KEY_EXCH_B */
2632 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2634 #ifndef OPENSSL_NO_ECDH
2635 BN_CTX_free(bn_ctx);
2636 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2637 if (clnt_ecdh != NULL)
2638 EC_KEY_free(clnt_ecdh);
2639 EVP_PKEY_free(srvr_pub_pkey);
2644 int ssl3_send_client_verify(SSL *s)
2646 unsigned char *p,*d;
2647 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2649 EVP_PKEY_CTX *pctx=NULL;
2650 #ifndef OPENSSL_NO_RSA
2654 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2658 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2660 d=(unsigned char *)s->init_buf->data;
2662 pkey=s->cert->key->privatekey;
2663 /* Create context from key and test if sha1 is allowed as digest */
2664 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2665 EVP_PKEY_sign_init(pctx);
2666 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2668 s->method->ssl3_enc->cert_verify_mac(s,
2670 &(data[MD5_DIGEST_LENGTH]));
2676 #ifndef OPENSSL_NO_RSA
2677 if (pkey->type == EVP_PKEY_RSA)
2679 s->method->ssl3_enc->cert_verify_mac(s,
2682 if (RSA_sign(NID_md5_sha1, data,
2683 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2684 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2686 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2694 #ifndef OPENSSL_NO_DSA
2695 if (pkey->type == EVP_PKEY_DSA)
2697 if (!DSA_sign(pkey->save_type,
2698 &(data[MD5_DIGEST_LENGTH]),
2699 SHA_DIGEST_LENGTH,&(p[2]),
2700 (unsigned int *)&j,pkey->pkey.dsa))
2702 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2710 #ifndef OPENSSL_NO_ECDSA
2711 if (pkey->type == EVP_PKEY_EC)
2713 if (!ECDSA_sign(pkey->save_type,
2714 &(data[MD5_DIGEST_LENGTH]),
2715 SHA_DIGEST_LENGTH,&(p[2]),
2716 (unsigned int *)&j,pkey->pkey.ec))
2718 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2727 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
2729 unsigned char signbuf[64];
2732 s->method->ssl3_enc->cert_verify_mac(s,
2733 NID_id_GostR3411_94,
2735 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
2736 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2737 ERR_R_INTERNAL_ERROR);
2740 for (i=63,j=0; i>=0; j++, i--) {
2748 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2751 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2754 s->state=SSL3_ST_CW_CERT_VRFY_B;
2755 s->init_num=(int)n+4;
2758 EVP_PKEY_CTX_free(pctx);
2759 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2761 EVP_PKEY_CTX_free(pctx);
2765 int ssl3_send_client_certificate(SSL *s)
2768 EVP_PKEY *pkey=NULL;
2772 if (s->state == SSL3_ST_CW_CERT_A)
2774 if ((s->cert == NULL) ||
2775 (s->cert->key->x509 == NULL) ||
2776 (s->cert->key->privatekey == NULL))
2777 s->state=SSL3_ST_CW_CERT_B;
2779 s->state=SSL3_ST_CW_CERT_C;
2782 /* We need to get a client cert */
2783 if (s->state == SSL3_ST_CW_CERT_B)
2785 /* If we get an error, we need to
2786 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2787 * We then get retied later */
2789 i = ssl_do_client_cert_cb(s, &x509, &pkey);
2792 s->rwstate=SSL_X509_LOOKUP;
2795 s->rwstate=SSL_NOTHING;
2796 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2798 s->state=SSL3_ST_CW_CERT_B;
2799 if ( !SSL_use_certificate(s,x509) ||
2800 !SSL_use_PrivateKey(s,pkey))
2806 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2809 if (x509 != NULL) X509_free(x509);
2810 if (pkey != NULL) EVP_PKEY_free(pkey);
2813 if (s->version == SSL3_VERSION)
2815 s->s3->tmp.cert_req=0;
2816 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2821 s->s3->tmp.cert_req=2;
2825 /* Ok, we have a cert */
2826 s->state=SSL3_ST_CW_CERT_C;
2829 if (s->state == SSL3_ST_CW_CERT_C)
2831 s->state=SSL3_ST_CW_CERT_D;
2832 l=ssl3_output_cert_chain(s,
2833 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2837 /* SSL3_ST_CW_CERT_D */
2838 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2841 #define has_bits(i,m) (((i)&(m)) == (m))
2843 int ssl3_check_cert_and_algorithm(SSL *s)
2847 EVP_PKEY *pkey=NULL;
2849 #ifndef OPENSSL_NO_RSA
2852 #ifndef OPENSSL_NO_DH
2856 sc=s->session->sess_cert;
2859 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2863 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2864 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
2866 /* we don't have a certificate */
2867 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
2870 #ifndef OPENSSL_NO_RSA
2871 rsa=s->session->sess_cert->peer_rsa_tmp;
2873 #ifndef OPENSSL_NO_DH
2874 dh=s->session->sess_cert->peer_dh_tmp;
2877 /* This is the passed certificate */
2879 idx=sc->peer_cert_type;
2880 #ifndef OPENSSL_NO_ECDH
2881 if (idx == SSL_PKEY_ECC)
2883 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2884 s->s3->tmp.new_cipher) == 0)
2885 { /* check failed */
2886 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2895 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2896 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2897 EVP_PKEY_free(pkey);
2900 /* Check that we have a certificate if we require one */
2901 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2903 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2906 #ifndef OPENSSL_NO_DSA
2907 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2909 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2913 #ifndef OPENSSL_NO_RSA
2914 if ((alg_k & SSL_kRSA) &&
2915 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2917 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2921 #ifndef OPENSSL_NO_DH
2922 if ((alg_k & SSL_kEDH) &&
2923 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2925 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2928 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2930 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2933 #ifndef OPENSSL_NO_DSA
2934 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2936 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2942 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2944 #ifndef OPENSSL_NO_RSA
2945 if (alg_k & SSL_kRSA)
2948 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2950 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2956 #ifndef OPENSSL_NO_DH
2957 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2960 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2962 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2969 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2975 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2980 /* Check to see if handshake is full or resumed. Usually this is just a
2981 * case of checking to see if a cache hit has occurred. In the case of
2982 * session tickets we have to check the next message to be sure.
2985 #ifndef OPENSSL_NO_TLSEXT
2986 int ssl3_check_finished(SSL *s)
2990 /* If we have no ticket it cannot be a resumed session. */
2991 if (!s->session->tlsext_tick)
2993 /* this function is called when we really expect a Certificate
2994 * message, so permit appropriate message length */
2995 n=s->method->ssl_get_message(s,
3001 if (!ok) return((int)n);
3002 s->s3->tmp.reuse_message = 1;
3003 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3004 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3011 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3014 #ifndef OPENSSL_NO_ENGINE
3015 if (s->ctx->client_cert_engine)
3017 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3018 SSL_get_client_CA_list(s),
3019 px509, ppkey, NULL, NULL, NULL);
3024 if (s->ctx->client_cert_cb)
3025 i = s->ctx->client_cert_cb(s,px509,ppkey);