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>
160 #include <openssl/fips.h>
162 #ifndef OPENSSL_NO_DH
163 #include <openssl/dh.h>
165 #include <openssl/bn.h>
166 #ifndef OPENSSL_NO_ENGINE
167 #include <openssl/engine.h>
170 static const SSL_METHOD *ssl3_get_client_method(int ver);
171 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
173 static const SSL_METHOD *ssl3_get_client_method(int ver)
175 if (ver == SSL3_VERSION)
176 return(SSLv3_client_method());
181 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
182 ssl_undefined_function,
184 ssl3_get_client_method)
186 int ssl3_connect(SSL *s)
189 unsigned long Time=(unsigned long)time(NULL);
190 void (*cb)(const SSL *ssl,int type,int val)=NULL;
192 int new_state,state,skip=0;
194 RAND_add(&Time,sizeof(Time),0);
198 if (s->info_callback != NULL)
200 else if (s->ctx->info_callback != NULL)
201 cb=s->ctx->info_callback;
204 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
206 #ifndef OPENSSL_NO_HEARTBEATS
207 /* If we're awaiting a HeartbeatResponse, pretend we
208 * already got and don't await it anymore, because
209 * Heartbeats don't make sense during handshakes anyway.
211 if (s->tlsext_hb_pending)
213 s->tlsext_hb_pending = 0;
224 case SSL_ST_RENEGOTIATE:
226 s->state=SSL_ST_CONNECT;
227 s->ctx->stats.sess_connect_renegotiate++;
231 case SSL_ST_BEFORE|SSL_ST_CONNECT:
232 case SSL_ST_OK|SSL_ST_CONNECT:
235 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
237 if ((s->version & 0xff00 ) != 0x0300)
239 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
244 /* s->version=SSL3_VERSION; */
245 s->type=SSL_ST_CONNECT;
247 if (s->init_buf == NULL)
249 if ((buf=BUF_MEM_new()) == NULL)
254 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
263 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
265 /* setup buffing BIO */
266 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
268 /* don't push the buffering BIO quite yet */
270 ssl3_init_finished_mac(s);
272 s->state=SSL3_ST_CW_CLNT_HELLO_A;
273 s->ctx->stats.sess_connect++;
277 case SSL3_ST_CW_CLNT_HELLO_A:
278 case SSL3_ST_CW_CLNT_HELLO_B:
281 ret=ssl3_client_hello(s);
282 if (ret <= 0) goto end;
283 s->state=SSL3_ST_CR_SRVR_HELLO_A;
286 /* turn on buffering for the next lot of output */
287 if (s->bbio != s->wbio)
288 s->wbio=BIO_push(s->bbio,s->wbio);
292 case SSL3_ST_CR_SRVR_HELLO_A:
293 case SSL3_ST_CR_SRVR_HELLO_B:
294 ret=ssl3_get_server_hello(s);
295 if (ret <= 0) goto end;
299 s->state=SSL3_ST_CR_FINISHED_A;
300 #ifndef OPENSSL_NO_TLSEXT
301 if (s->tlsext_ticket_expected)
303 /* receive renewed session ticket */
304 s->state=SSL3_ST_CR_SESSION_TICKET_A;
310 s->state=SSL3_ST_CR_CERT_A;
314 #ifndef OPENSSL_NO_TLSEXT
315 case SSL3_ST_CR_SUPPLEMENTAL_DATA_A:
316 case SSL3_ST_CR_SUPPLEMENTAL_DATA_B:
317 ret = tls1_get_server_supplemental_data(s);
318 if (ret <= 0) goto end;
319 s->state=SSL3_ST_CR_CERT_A;
323 case SSL3_ST_CR_CERT_A:
324 case SSL3_ST_CR_CERT_B:
325 #ifndef OPENSSL_NO_TLSEXT
326 ret=ssl3_check_finished(s);
327 if (ret <= 0) goto end;
330 s->state=SSL3_ST_CR_SUPPLEMENTAL_DATA_A;
337 if (s->tlsext_ticket_expected)
338 s->state=SSL3_ST_CR_SESSION_TICKET_A;
340 s->state=SSL3_ST_CR_FINISHED_A;
345 /* Check if it is anon DH/ECDH */
347 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
348 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
350 ret=ssl3_get_server_certificate(s);
351 if (ret <= 0) goto end;
352 #ifndef OPENSSL_NO_TLSEXT
353 if (s->tlsext_status_expected)
354 s->state=SSL3_ST_CR_CERT_STATUS_A;
356 s->state=SSL3_ST_CR_KEY_EXCH_A;
361 s->state=SSL3_ST_CR_KEY_EXCH_A;
368 s->state=SSL3_ST_CR_KEY_EXCH_A;
373 case SSL3_ST_CR_KEY_EXCH_A:
374 case SSL3_ST_CR_KEY_EXCH_B:
375 ret=ssl3_get_key_exchange(s);
376 if (ret <= 0) goto end;
377 s->state=SSL3_ST_CR_CERT_REQ_A;
380 /* at this point we check that we have the
381 * required stuff from the server */
382 if (!ssl3_check_cert_and_algorithm(s))
389 case SSL3_ST_CR_CERT_REQ_A:
390 case SSL3_ST_CR_CERT_REQ_B:
391 ret=ssl3_get_certificate_request(s);
392 if (ret <= 0) goto end;
393 s->state=SSL3_ST_CR_SRVR_DONE_A;
397 case SSL3_ST_CR_SRVR_DONE_A:
398 case SSL3_ST_CR_SRVR_DONE_B:
399 ret=ssl3_get_server_done(s);
400 if (ret <= 0) goto end;
401 #ifndef OPENSSL_NO_SRP
402 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP)
404 if ((ret = SRP_Calc_A_param(s))<=0)
406 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SRP_A_CALC);
407 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
412 #ifndef OPENSSL_NO_TLSEXT
413 s->state=SSL3_ST_CW_SUPPLEMENTAL_DATA_A;
415 if (s->s3->tmp.cert_req)
416 s->state=SSL3_ST_CW_CERT_A;
418 s->state=SSL3_ST_CW_KEY_EXCH_A;
424 case SSL3_ST_CW_CERT_A:
425 case SSL3_ST_CW_CERT_B:
426 case SSL3_ST_CW_CERT_C:
427 case SSL3_ST_CW_CERT_D:
428 ret=ssl3_send_client_certificate(s);
429 if (ret <= 0) goto end;
430 s->state=SSL3_ST_CW_KEY_EXCH_A;
434 case SSL3_ST_CW_KEY_EXCH_A:
435 case SSL3_ST_CW_KEY_EXCH_B:
436 ret=ssl3_send_client_key_exchange(s);
437 if (ret <= 0) goto end;
438 /* EAY EAY EAY need to check for DH fix cert
440 /* For TLS, cert_req is set to 2, so a cert chain
441 * of nothing is sent, but no verify packet is sent */
442 /* XXX: For now, we do not support client
443 * authentication in ECDH cipher suites with
444 * ECDH (rather than ECDSA) certificates.
445 * We need to skip the certificate verify
446 * message when client's ECDH public key is sent
447 * inside the client certificate.
449 if (s->s3->tmp.cert_req == 1)
451 s->state=SSL3_ST_CW_CERT_VRFY_A;
455 s->state=SSL3_ST_CW_CHANGE_A;
456 s->s3->change_cipher_spec=0;
458 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
460 s->state=SSL3_ST_CW_CHANGE_A;
461 s->s3->change_cipher_spec=0;
467 case SSL3_ST_CW_CERT_VRFY_A:
468 case SSL3_ST_CW_CERT_VRFY_B:
469 ret=ssl3_send_client_verify(s);
470 if (ret <= 0) goto end;
471 s->state=SSL3_ST_CW_CHANGE_A;
473 s->s3->change_cipher_spec=0;
476 case SSL3_ST_CW_CHANGE_A:
477 case SSL3_ST_CW_CHANGE_B:
478 ret=ssl3_send_change_cipher_spec(s,
479 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
480 if (ret <= 0) goto end;
482 #if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
483 s->state=SSL3_ST_CW_FINISHED_A;
485 if (s->s3->next_proto_neg_seen)
486 s->state=SSL3_ST_CW_NEXT_PROTO_A;
488 s->state=SSL3_ST_CW_FINISHED_A;
492 s->session->cipher=s->s3->tmp.new_cipher;
493 #ifdef OPENSSL_NO_COMP
494 s->session->compress_meth=0;
496 if (s->s3->tmp.new_compression == NULL)
497 s->session->compress_meth=0;
499 s->session->compress_meth=
500 s->s3->tmp.new_compression->id;
502 if (!s->method->ssl3_enc->setup_key_block(s))
508 if (!s->method->ssl3_enc->change_cipher_state(s,
509 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
517 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
518 case SSL3_ST_CW_NEXT_PROTO_A:
519 case SSL3_ST_CW_NEXT_PROTO_B:
520 ret=ssl3_send_next_proto(s);
521 if (ret <= 0) goto end;
522 s->state=SSL3_ST_CW_FINISHED_A;
526 #ifndef OPENSSL_NO_TLSEXT
527 case SSL3_ST_CW_SUPPLEMENTAL_DATA_A:
528 case SSL3_ST_CW_SUPPLEMENTAL_DATA_B:
529 ret = tls1_send_client_supplemental_data(s, &skip);
530 if (ret <= 0) goto end;
531 if (s->s3->tmp.cert_req)
532 s->state=SSL3_ST_CW_CERT_A;
534 s->state=SSL3_ST_CW_KEY_EXCH_A;
539 case SSL3_ST_CW_FINISHED_A:
540 case SSL3_ST_CW_FINISHED_B:
541 ret=ssl3_send_finished(s,
542 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
543 s->method->ssl3_enc->client_finished_label,
544 s->method->ssl3_enc->client_finished_label_len);
545 if (ret <= 0) goto end;
546 s->s3->flags |= SSL3_FLAGS_CCS_OK;
547 s->state=SSL3_ST_CW_FLUSH;
550 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
553 s->s3->tmp.next_state=SSL_ST_OK;
554 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
557 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
558 s->s3->delay_buf_pop_ret=0;
563 #ifndef OPENSSL_NO_TLSEXT
564 /* Allow NewSessionTicket if ticket expected */
565 if (s->tlsext_ticket_expected)
566 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
570 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
575 #ifndef OPENSSL_NO_TLSEXT
576 case SSL3_ST_CR_SESSION_TICKET_A:
577 case SSL3_ST_CR_SESSION_TICKET_B:
578 ret=ssl3_get_new_session_ticket(s);
579 if (ret <= 0) goto end;
580 s->state=SSL3_ST_CR_FINISHED_A;
584 case SSL3_ST_CR_CERT_STATUS_A:
585 case SSL3_ST_CR_CERT_STATUS_B:
586 ret=ssl3_get_cert_status(s);
587 if (ret <= 0) goto end;
588 s->state=SSL3_ST_CR_KEY_EXCH_A;
593 case SSL3_ST_CR_FINISHED_A:
594 case SSL3_ST_CR_FINISHED_B:
596 s->s3->flags |= SSL3_FLAGS_CCS_OK;
597 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
598 SSL3_ST_CR_FINISHED_B);
599 if (ret <= 0) goto end;
602 s->state=SSL3_ST_CW_CHANGE_A;
608 case SSL3_ST_CW_FLUSH:
609 s->rwstate=SSL_WRITING;
610 if (BIO_flush(s->wbio) <= 0)
615 s->rwstate=SSL_NOTHING;
616 s->state=s->s3->tmp.next_state;
620 /* clean a few things up */
621 ssl3_cleanup_key_block(s);
623 if (s->init_buf != NULL)
625 BUF_MEM_free(s->init_buf);
629 /* If we are not 'joining' the last two packets,
630 * remove the buffering now */
631 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
632 ssl_free_wbio_buffer(s);
633 /* else do it later in ssl3_write */
639 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
640 if (s->hit) s->ctx->stats.sess_hit++;
644 s->handshake_func=ssl3_connect;
645 s->ctx->stats.sess_connect_good++;
647 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
653 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
659 /* did we do anything */
660 if (!s->s3->tmp.reuse_message && !skip)
664 if ((ret=BIO_flush(s->wbio)) <= 0)
668 if ((cb != NULL) && (s->state != state))
672 cb(s,SSL_CB_CONNECT_LOOP,1);
683 cb(s,SSL_CB_CONNECT_EXIT,ret);
688 int ssl3_client_hello(SSL *s)
695 #ifndef OPENSSL_NO_COMP
700 buf=(unsigned char *)s->init_buf->data;
701 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
703 SSL_SESSION *sess = s->session;
704 if ((sess == NULL) ||
705 (sess->ssl_version != s->version) ||
706 #ifdef OPENSSL_NO_TLSEXT
707 !sess->session_id_length ||
709 (!sess->session_id_length && !sess->tlsext_tick) ||
711 (sess->not_resumable))
713 if (!ssl_get_new_session(s,0))
716 if (s->method->version == DTLS_ANY_VERSION)
718 /* Determine which DTLS version to use */
719 int options = s->options;
720 /* If DTLS 1.2 disabled correct the version number */
721 if (options & SSL_OP_NO_DTLSv1_2)
725 SSLerr(SSL_F_SSL3_CLIENT_HELLO, SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE);
728 /* Disabling all versions is silly: return an
731 if (options & SSL_OP_NO_DTLSv1)
733 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_WRONG_SSL_VERSION);
736 /* Update method so we don't use any DTLS 1.2
739 s->method = DTLSv1_client_method();
740 s->version = DTLS1_VERSION;
744 /* We only support one version: update method */
745 if (options & SSL_OP_NO_DTLSv1)
746 s->method = DTLSv1_2_client_method();
747 s->version = DTLS1_2_VERSION;
749 s->client_version = s->version;
751 /* else use the pre-loaded session */
753 p=s->s3->client_random;
755 /* for DTLS if client_random is initialized, reuse it, we are
756 * required to use same upon reply to HelloVerify */
761 for (idx=0; idx < sizeof(s->s3->client_random); idx++)
774 ssl_fill_hello_random(s, 0, p,
775 sizeof(s->s3->client_random));
777 /* Do the message type and length last */
778 d=p= ssl_handshake_start(s);
780 /* version indicates the negotiated version: for example from
781 * an SSLv2/v3 compatible client hello). The client_version
782 * field is the maximum version we permit and it is also
783 * used in RSA encrypted premaster secrets. Some servers can
784 * choke if we initially report a higher version then
785 * renegotiate to a lower one in the premaster secret. This
786 * didn't happen with TLS 1.0 as most servers supported it
787 * but it can with TLS 1.1 or later if the server only supports
790 * Possible scenario with previous logic:
791 * 1. Client hello indicates TLS 1.2
792 * 2. Server hello says TLS 1.0
793 * 3. RSA encrypted premaster secret uses 1.2.
794 * 4. Handhaked proceeds using TLS 1.0.
795 * 5. Server sends hello request to renegotiate.
796 * 6. Client hello indicates TLS v1.0 as we now
797 * know that is maximum server supports.
798 * 7. Server chokes on RSA encrypted premaster secret
799 * containing version 1.0.
801 * For interoperability it should be OK to always use the
802 * maximum version we support in client hello and then rely
803 * on the checking of version to ensure the servers isn't
804 * being inconsistent: for example initially negotiating with
805 * TLS 1.0 and renegotiating with TLS 1.2. We do this by using
806 * client_version in client hello and not resetting it to
807 * the negotiated version.
810 *(p++)=s->version>>8;
811 *(p++)=s->version&0xff;
812 s->client_version=s->version;
814 *(p++)=s->client_version>>8;
815 *(p++)=s->client_version&0xff;
819 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
826 i=s->session->session_id_length;
830 if (i > (int)sizeof(s->session->session_id))
832 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
835 memcpy(p,s->session->session_id,i);
839 /* cookie stuff for DTLS */
842 if ( s->d1->cookie_len > sizeof(s->d1->cookie))
844 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
847 *(p++) = s->d1->cookie_len;
848 memcpy(p, s->d1->cookie, s->d1->cookie_len);
849 p += s->d1->cookie_len;
852 /* Ciphers supported */
853 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
856 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
859 #ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
860 /* Some servers hang if client hello > 256 bytes
861 * as hack workaround chop number of supported ciphers
862 * to keep it well below this if we use TLS v1.2
864 if (TLS1_get_version(s) >= TLS1_2_VERSION
865 && i > OPENSSL_MAX_TLS1_2_CIPHER_LENGTH)
866 i = OPENSSL_MAX_TLS1_2_CIPHER_LENGTH & ~1;
872 #ifdef OPENSSL_NO_COMP
876 if ((s->options & SSL_OP_NO_COMPRESSION)
877 || !s->ctx->comp_methods)
880 j=sk_SSL_COMP_num(s->ctx->comp_methods);
884 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
888 *(p++)=0; /* Add the NULL method */
890 #ifndef OPENSSL_NO_TLSEXT
892 if (ssl_prepare_clienthello_tlsext(s) <= 0)
894 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
897 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH, &al)) == NULL)
899 ssl3_send_alert(s,SSL3_AL_FATAL,al);
900 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
906 ssl_set_handshake_header(s, SSL3_MT_CLIENT_HELLO, l);
907 s->state=SSL3_ST_CW_CLNT_HELLO_B;
910 /* SSL3_ST_CW_CLNT_HELLO_B */
911 return ssl_do_write(s);
916 int ssl3_get_server_hello(SSL *s)
918 STACK_OF(SSL_CIPHER) *sk;
922 int i,al=SSL_AD_INTERNAL_ERROR,ok;
925 #ifndef OPENSSL_NO_COMP
928 /* Hello verify request and/or server hello version may not
929 * match so set first packet if we're negotiating version.
934 n=s->method->ssl_get_message(s,
935 SSL3_ST_CR_SRVR_HELLO_A,
936 SSL3_ST_CR_SRVR_HELLO_B,
941 if (!ok) return((int)n);
946 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
948 if ( s->d1->send_cookie == 0)
950 s->s3->tmp.reuse_message = 1;
953 else /* already sent a cookie */
955 al=SSL_AD_UNEXPECTED_MESSAGE;
956 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
962 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
964 al=SSL_AD_UNEXPECTED_MESSAGE;
965 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
969 d=p=(unsigned char *)s->init_msg;
970 if (s->method->version == DTLS_ANY_VERSION)
972 /* Work out correct protocol version to use */
973 int hversion = (p[0] << 8)|p[1];
974 int options = s->options;
975 if (hversion == DTLS1_2_VERSION
976 && !(options & SSL_OP_NO_DTLSv1_2))
977 s->method = DTLSv1_2_client_method();
978 else if (tls1_suiteb(s))
980 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO, SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE);
981 s->version = hversion;
982 al = SSL_AD_PROTOCOL_VERSION;
985 else if (hversion == DTLS1_VERSION
986 && !(options & SSL_OP_NO_DTLSv1))
987 s->method = DTLSv1_client_method();
990 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
991 s->version = hversion;
992 al = SSL_AD_PROTOCOL_VERSION;
995 s->version = s->client_version = s->method->version;
998 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
1000 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
1001 s->version=(s->version&0xff00)|p[1];
1002 al=SSL_AD_PROTOCOL_VERSION;
1007 /* load the server hello data */
1008 /* load the server random */
1009 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
1010 p+=SSL3_RANDOM_SIZE;
1012 /* get the session-id */
1015 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
1017 al=SSL_AD_ILLEGAL_PARAMETER;
1018 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
1022 #ifndef OPENSSL_NO_TLSEXT
1023 /* check if we want to resume the session based on external pre-shared secret */
1024 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
1026 SSL_CIPHER *pref_cipher=NULL;
1027 s->session->master_key_length=sizeof(s->session->master_key);
1028 if (s->tls_session_secret_cb(s, s->session->master_key,
1029 &s->session->master_key_length,
1031 s->tls_session_secret_cb_arg))
1033 s->session->cipher = pref_cipher ?
1034 pref_cipher : ssl_get_cipher_by_char(s, p+j);
1035 s->s3->flags |= SSL3_FLAGS_CCS_OK;
1038 #endif /* OPENSSL_NO_TLSEXT */
1040 if (j != 0 && j == s->session->session_id_length
1041 && memcmp(p,s->session->session_id,j) == 0)
1043 if(s->sid_ctx_length != s->session->sid_ctx_length
1044 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
1046 /* actually a client application bug */
1047 al=SSL_AD_ILLEGAL_PARAMETER;
1048 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
1051 s->s3->flags |= SSL3_FLAGS_CCS_OK;
1054 else /* a miss or crap from the other end */
1056 /* If we were trying for session-id reuse, make a new
1057 * SSL_SESSION so we don't stuff up other people */
1059 if (s->session->session_id_length > 0)
1061 if (!ssl_get_new_session(s,0))
1066 s->session->session_id_length=j;
1067 memcpy(s->session->session_id,p,j); /* j could be 0 */
1070 c=ssl_get_cipher_by_char(s,p);
1073 /* unknown cipher */
1074 al=SSL_AD_ILLEGAL_PARAMETER;
1075 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
1078 /* If it is a disabled cipher we didn't send it in client hello,
1079 * so return an error.
1081 if (c->algorithm_ssl & ct->mask_ssl ||
1082 c->algorithm_mkey & ct->mask_k ||
1083 c->algorithm_auth & ct->mask_a)
1085 al=SSL_AD_ILLEGAL_PARAMETER;
1086 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
1089 p+=ssl_put_cipher_by_char(s,NULL,NULL);
1091 sk=ssl_get_ciphers_by_id(s);
1092 i=sk_SSL_CIPHER_find(sk,c);
1095 /* we did not say we would use this cipher */
1096 al=SSL_AD_ILLEGAL_PARAMETER;
1097 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
1101 /* Depending on the session caching (internal/external), the cipher
1102 and/or cipher_id values may not be set. Make sure that
1103 cipher_id is set and use it for comparison. */
1104 if (s->session->cipher)
1105 s->session->cipher_id = s->session->cipher->id;
1106 if (s->hit && (s->session->cipher_id != c->id))
1108 /* Workaround is now obsolete */
1111 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
1114 al=SSL_AD_ILLEGAL_PARAMETER;
1115 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
1119 s->s3->tmp.new_cipher=c;
1120 /* Don't digest cached records if no sigalgs: we may need them for
1121 * client authentication.
1123 if (!SSL_USE_SIGALGS(s) && !ssl3_digest_cached_records(s))
1125 /* lets get the compression algorithm */
1127 #ifdef OPENSSL_NO_COMP
1130 al=SSL_AD_ILLEGAL_PARAMETER;
1131 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
1134 /* If compression is disabled we'd better not try to resume a session
1135 * using compression.
1137 if (s->session->compress_meth != 0)
1139 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
1144 if (s->hit && j != s->session->compress_meth)
1146 al=SSL_AD_ILLEGAL_PARAMETER;
1147 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
1152 else if (s->options & SSL_OP_NO_COMPRESSION)
1154 al=SSL_AD_ILLEGAL_PARAMETER;
1155 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
1159 comp=ssl3_comp_find(s->ctx->comp_methods,j);
1161 if ((j != 0) && (comp == NULL))
1163 al=SSL_AD_ILLEGAL_PARAMETER;
1164 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
1169 s->s3->tmp.new_compression=comp;
1173 #ifndef OPENSSL_NO_TLSEXT
1175 if (!ssl_parse_serverhello_tlsext(s,&p,d,n))
1177 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
1184 /* wrong packet length */
1185 al=SSL_AD_DECODE_ERROR;
1186 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
1192 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1197 int ssl3_get_server_certificate(SSL *s)
1199 int al,i,ok,ret= -1;
1200 unsigned long n,nc,llen,l;
1202 const unsigned char *q,*p;
1204 STACK_OF(X509) *sk=NULL;
1206 EVP_PKEY *pkey=NULL;
1207 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1209 n=s->method->ssl_get_message(s,
1216 if (!ok) return((int)n);
1218 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1219 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1220 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1222 s->s3->tmp.reuse_message=1;
1226 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1228 al=SSL_AD_UNEXPECTED_MESSAGE;
1229 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1232 p=d=(unsigned char *)s->init_msg;
1234 if ((sk=sk_X509_new_null()) == NULL)
1236 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1243 al=SSL_AD_DECODE_ERROR;
1244 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1247 for (nc=0; nc<llen; )
1250 if ((l+nc+3) > llen)
1252 al=SSL_AD_DECODE_ERROR;
1253 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1258 x=d2i_X509(NULL,&q,l);
1261 al=SSL_AD_BAD_CERTIFICATE;
1262 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1267 al=SSL_AD_DECODE_ERROR;
1268 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1271 if (!sk_X509_push(sk,x))
1273 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1281 i=ssl_verify_cert_chain(s,sk);
1282 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1283 #ifndef OPENSSL_NO_KRB5
1284 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1285 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1286 #endif /* OPENSSL_NO_KRB5 */
1289 al=ssl_verify_alarm_type(s->verify_result);
1290 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1293 ERR_clear_error(); /* but we keep s->verify_result */
1295 sc=ssl_sess_cert_new();
1296 if (sc == NULL) goto err;
1298 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1299 s->session->sess_cert=sc;
1302 /* Inconsistency alert: cert_chain does include the peer's
1303 * certificate, which we don't include in s3_srvr.c */
1304 x=sk_X509_value(sk,0);
1306 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1308 pkey=X509_get_pubkey(x);
1310 /* VRS: allow null cert if auth == KRB5 */
1311 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1312 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1316 printf("pkey,x = %p, %p\n", pkey,x);
1317 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1318 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1319 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1320 #endif /* KSSL_DEBUG */
1322 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1326 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1327 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1331 i=ssl_cert_type(x,pkey);
1332 if (need_cert && i < 0)
1336 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1337 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1343 int exp_idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
1344 if (exp_idx >= 0 && i != exp_idx)
1347 al=SSL_AD_ILLEGAL_PARAMETER;
1348 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1349 SSL_R_WRONG_CERTIFICATE_TYPE);
1352 sc->peer_cert_type=i;
1353 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1354 /* Why would the following ever happen?
1355 * We just created sc a couple of lines ago. */
1356 if (sc->peer_pkeys[i].x509 != NULL)
1357 X509_free(sc->peer_pkeys[i].x509);
1358 sc->peer_pkeys[i].x509=x;
1359 sc->peer_key= &(sc->peer_pkeys[i]);
1361 if (s->session->peer != NULL)
1362 X509_free(s->session->peer);
1363 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1368 sc->peer_cert_type=i;
1371 if (s->session->peer != NULL)
1372 X509_free(s->session->peer);
1373 s->session->peer=NULL;
1375 s->session->verify_result = s->verify_result;
1382 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1385 EVP_PKEY_free(pkey);
1387 sk_X509_pop_free(sk,X509_free);
1391 int ssl3_get_key_exchange(SSL *s)
1393 #ifndef OPENSSL_NO_RSA
1394 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1397 unsigned char *param,*p;
1398 int al,i,j,param_len,ok;
1400 EVP_PKEY *pkey=NULL;
1401 const EVP_MD *md = NULL;
1402 #ifndef OPENSSL_NO_RSA
1405 #ifndef OPENSSL_NO_DH
1408 #ifndef OPENSSL_NO_ECDH
1409 EC_KEY *ecdh = NULL;
1410 BN_CTX *bn_ctx = NULL;
1411 EC_POINT *srvr_ecpoint = NULL;
1413 int encoded_pt_len = 0;
1416 /* use same message size as in ssl3_get_certificate_request()
1417 * as ServerKeyExchange message may be skipped */
1418 n=s->method->ssl_get_message(s,
1419 SSL3_ST_CR_KEY_EXCH_A,
1420 SSL3_ST_CR_KEY_EXCH_B,
1424 if (!ok) return((int)n);
1426 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1428 #ifndef OPENSSL_NO_PSK
1429 /* In plain PSK ciphersuite, ServerKeyExchange can be
1430 omitted if no identity hint is sent. Set
1431 session->sess_cert anyway to avoid problems
1433 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1435 s->session->sess_cert=ssl_sess_cert_new();
1436 if (s->ctx->psk_identity_hint)
1437 OPENSSL_free(s->ctx->psk_identity_hint);
1438 s->ctx->psk_identity_hint = NULL;
1441 s->s3->tmp.reuse_message=1;
1445 param=p=(unsigned char *)s->init_msg;
1446 if (s->session->sess_cert != NULL)
1448 #ifndef OPENSSL_NO_RSA
1449 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1451 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1452 s->session->sess_cert->peer_rsa_tmp=NULL;
1455 #ifndef OPENSSL_NO_DH
1456 if (s->session->sess_cert->peer_dh_tmp)
1458 DH_free(s->session->sess_cert->peer_dh_tmp);
1459 s->session->sess_cert->peer_dh_tmp=NULL;
1462 #ifndef OPENSSL_NO_ECDH
1463 if (s->session->sess_cert->peer_ecdh_tmp)
1465 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1466 s->session->sess_cert->peer_ecdh_tmp=NULL;
1472 s->session->sess_cert=ssl_sess_cert_new();
1476 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1477 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1478 EVP_MD_CTX_init(&md_ctx);
1480 #ifndef OPENSSL_NO_PSK
1481 if (alg_k & SSL_kPSK)
1483 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1485 al=SSL_AD_HANDSHAKE_FAILURE;
1488 /* Store PSK identity hint for later use, hint is used
1489 * in ssl3_send_client_key_exchange. Assume that the
1490 * maximum length of a PSK identity hint can be as
1491 * long as the maximum length of a PSK identity. */
1492 if (i > PSK_MAX_IDENTITY_LEN)
1494 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1495 SSL_R_DATA_LENGTH_TOO_LONG);
1500 al=SSL_AD_DECODE_ERROR;
1501 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1502 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1505 /* If received PSK identity hint contains NULL
1506 * characters, the hint is truncated from the first
1507 * NULL. p may not be ending with NULL, so create a
1508 * NULL-terminated string. */
1509 memcpy(tmp_id_hint, p, i);
1510 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1511 if (s->ctx->psk_identity_hint != NULL)
1512 OPENSSL_free(s->ctx->psk_identity_hint);
1513 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1514 if (s->ctx->psk_identity_hint == NULL)
1516 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1524 #endif /* !OPENSSL_NO_PSK */
1525 #ifndef OPENSSL_NO_SRP
1526 if (alg_k & SSL_kSRP)
1532 al=SSL_AD_DECODE_ERROR;
1533 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1536 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1538 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1547 al=SSL_AD_DECODE_ERROR;
1548 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1551 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1553 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1558 i = (unsigned int)(p[0]);
1563 al=SSL_AD_DECODE_ERROR;
1564 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1567 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1569 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1578 al=SSL_AD_DECODE_ERROR;
1579 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1582 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1584 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1590 /* We must check if there is a certificate */
1591 #ifndef OPENSSL_NO_RSA
1592 if (alg_a & SSL_aRSA)
1593 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1598 #ifndef OPENSSL_NO_DSA
1599 else if (alg_a & SSL_aDSS)
1600 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1604 #endif /* !OPENSSL_NO_SRP */
1605 #ifndef OPENSSL_NO_RSA
1606 if (alg_k & SSL_kRSA)
1608 if ((rsa=RSA_new()) == NULL)
1610 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1617 al=SSL_AD_DECODE_ERROR;
1618 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1621 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1623 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1632 al=SSL_AD_DECODE_ERROR;
1633 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1636 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1638 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1644 /* this should be because we are using an export cipher */
1645 if (alg_a & SSL_aRSA)
1646 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1649 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1652 s->session->sess_cert->peer_rsa_tmp=rsa;
1655 #else /* OPENSSL_NO_RSA */
1659 #ifndef OPENSSL_NO_DH
1660 else if (alg_k & SSL_kEDH)
1662 if ((dh=DH_new()) == NULL)
1664 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1671 al=SSL_AD_DECODE_ERROR;
1672 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1675 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1677 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1686 al=SSL_AD_DECODE_ERROR;
1687 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1690 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1692 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1701 al=SSL_AD_DECODE_ERROR;
1702 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1705 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1707 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1713 #ifndef OPENSSL_NO_RSA
1714 if (alg_a & SSL_aRSA)
1715 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1720 #ifndef OPENSSL_NO_DSA
1721 else if (alg_a & SSL_aDSS)
1722 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1724 /* else anonymous DH, so no certificate or pkey. */
1726 s->session->sess_cert->peer_dh_tmp=dh;
1729 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1731 al=SSL_AD_ILLEGAL_PARAMETER;
1732 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1735 #endif /* !OPENSSL_NO_DH */
1737 #ifndef OPENSSL_NO_ECDH
1738 else if (alg_k & SSL_kEECDH)
1741 const EC_GROUP *group;
1743 if ((ecdh=EC_KEY_new()) == NULL)
1745 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1749 /* Extract elliptic curve parameters and the
1750 * server's ephemeral ECDH public key.
1751 * Keep accumulating lengths of various components in
1752 * param_len and make sure it never exceeds n.
1755 /* XXX: For now we only support named (not generic) curves
1756 * and the ECParameters in this case is just three bytes.
1759 /* Check curve is one of our prefrences, if not server has
1760 * sent an invalid curve.
1762 if (!tls1_check_curve(s, p, param_len))
1764 al=SSL_AD_DECODE_ERROR;
1765 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_CURVE);
1769 if ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0)
1771 al=SSL_AD_INTERNAL_ERROR;
1772 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1776 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1779 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1782 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1784 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1787 EC_GROUP_free(ngroup);
1789 group = EC_KEY_get0_group(ecdh);
1791 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1792 (EC_GROUP_get_degree(group) > 163))
1794 al=SSL_AD_EXPORT_RESTRICTION;
1795 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1801 /* Next, get the encoded ECPoint */
1802 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1803 ((bn_ctx = BN_CTX_new()) == NULL))
1805 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1809 encoded_pt_len = *p; /* length of encoded point */
1811 param_len += (1 + encoded_pt_len);
1812 if ((param_len > n) ||
1813 (EC_POINT_oct2point(group, srvr_ecpoint,
1814 p, encoded_pt_len, bn_ctx) == 0))
1816 al=SSL_AD_DECODE_ERROR;
1817 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1824 /* The ECC/TLS specification does not mention
1825 * the use of DSA to sign ECParameters in the server
1826 * key exchange message. We do support RSA and ECDSA.
1829 #ifndef OPENSSL_NO_RSA
1830 else if (alg_a & SSL_aRSA)
1831 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1833 #ifndef OPENSSL_NO_ECDSA
1834 else if (alg_a & SSL_aECDSA)
1835 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1837 /* else anonymous ECDH, so no certificate or pkey. */
1838 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1839 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1841 BN_CTX_free(bn_ctx);
1843 EC_POINT_free(srvr_ecpoint);
1844 srvr_ecpoint = NULL;
1848 al=SSL_AD_UNEXPECTED_MESSAGE;
1849 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1852 #endif /* !OPENSSL_NO_ECDH */
1855 /* p points to the next byte, there are 'n' bytes left */
1857 /* if it was signed, check the signature */
1860 if (SSL_USE_SIGALGS(s))
1862 int rv = tls12_check_peer_sigalg(&md, s, p, pkey);
1867 al = SSL_AD_DECODE_ERROR;
1871 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1881 j=EVP_PKEY_size(pkey);
1883 if ((i != n) || (n > j) || (n <= 0))
1885 /* wrong packet length */
1886 al=SSL_AD_DECODE_ERROR;
1887 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1891 #ifndef OPENSSL_NO_RSA
1892 if (pkey->type == EVP_PKEY_RSA && !SSL_USE_SIGALGS(s))
1898 for (num=2; num > 0; num--)
1900 EVP_MD_CTX_set_flags(&md_ctx,
1901 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1902 EVP_DigestInit_ex(&md_ctx,(num == 2)
1903 ?s->ctx->md5:s->ctx->sha1, NULL);
1904 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1905 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1906 EVP_DigestUpdate(&md_ctx,param,param_len);
1907 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1911 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1915 al=SSL_AD_DECRYPT_ERROR;
1916 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1922 al=SSL_AD_DECRYPT_ERROR;
1923 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1930 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1931 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1932 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1933 EVP_VerifyUpdate(&md_ctx,param,param_len);
1934 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1937 al=SSL_AD_DECRYPT_ERROR;
1938 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1945 /* aNULL or kPSK do not need public keys */
1946 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1948 /* Might be wrong key type, check it */
1949 if (ssl3_check_cert_and_algorithm(s))
1950 /* Otherwise this shouldn't happen */
1951 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1954 /* still data left over */
1957 al=SSL_AD_DECODE_ERROR;
1958 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1962 EVP_PKEY_free(pkey);
1963 EVP_MD_CTX_cleanup(&md_ctx);
1966 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1968 EVP_PKEY_free(pkey);
1969 #ifndef OPENSSL_NO_RSA
1973 #ifndef OPENSSL_NO_DH
1977 #ifndef OPENSSL_NO_ECDH
1978 BN_CTX_free(bn_ctx);
1979 EC_POINT_free(srvr_ecpoint);
1983 EVP_MD_CTX_cleanup(&md_ctx);
1987 int ssl3_get_certificate_request(SSL *s)
1990 unsigned long n,nc,l;
1991 unsigned int llen, ctype_num,i;
1993 const unsigned char *p,*q;
1995 STACK_OF(X509_NAME) *ca_sk=NULL;
1997 n=s->method->ssl_get_message(s,
1998 SSL3_ST_CR_CERT_REQ_A,
1999 SSL3_ST_CR_CERT_REQ_B,
2004 if (!ok) return((int)n);
2006 s->s3->tmp.cert_req=0;
2008 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
2010 s->s3->tmp.reuse_message=1;
2011 /* If we get here we don't need any cached handshake records
2012 * as we wont be doing client auth.
2014 if (s->s3->handshake_buffer)
2016 if (!ssl3_digest_cached_records(s))
2022 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
2024 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2025 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
2029 /* TLS does not like anon-DH with client cert */
2030 if (s->version > SSL3_VERSION)
2032 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
2034 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2035 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
2040 p=d=(unsigned char *)s->init_msg;
2042 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
2044 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
2048 /* get the certificate types */
2050 if (s->cert->ctypes)
2052 OPENSSL_free(s->cert->ctypes);
2053 s->cert->ctypes = NULL;
2055 if (ctype_num > SSL3_CT_NUMBER)
2057 /* If we exceed static buffer copy all to cert structure */
2058 s->cert->ctypes = OPENSSL_malloc(ctype_num);
2059 memcpy(s->cert->ctypes, p, ctype_num);
2060 s->cert->ctype_num = (size_t)ctype_num;
2061 ctype_num=SSL3_CT_NUMBER;
2063 for (i=0; i<ctype_num; i++)
2064 s->s3->tmp.ctype[i]= p[i];
2066 if (SSL_USE_SIGALGS(s))
2069 /* Check we have enough room for signature algorithms and
2070 * following length value.
2072 if ((unsigned long)(p - d + llen + 2) > n)
2074 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2075 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
2078 /* Clear certificate digests and validity flags */
2079 for (i = 0; i < SSL_PKEY_NUM; i++)
2081 s->cert->pkeys[i].digest = NULL;
2082 s->cert->pkeys[i].valid_flags = 0;
2084 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
2086 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2087 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
2093 /* get the CA RDNs */
2098 out=fopen("/tmp/vsign.der","w");
2099 fwrite(p,1,llen,out);
2104 if ((unsigned long)(p - d + llen) != n)
2106 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2107 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
2111 for (nc=0; nc<llen; )
2114 if ((l+nc+2) > llen)
2116 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
2117 goto cont; /* netscape bugs */
2118 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2119 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
2125 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
2127 /* If netscape tolerance is on, ignore errors */
2128 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
2132 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2133 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
2140 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2141 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
2144 if (!sk_X509_NAME_push(ca_sk,xn))
2146 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
2160 /* we should setup a certificate to return.... */
2161 s->s3->tmp.cert_req=1;
2162 s->s3->tmp.ctype_num=ctype_num;
2163 if (s->s3->tmp.ca_names != NULL)
2164 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
2165 s->s3->tmp.ca_names=ca_sk;
2170 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
2174 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
2176 return(X509_NAME_cmp(*a,*b));
2178 #ifndef OPENSSL_NO_TLSEXT
2179 int ssl3_get_new_session_ticket(SSL *s)
2181 int ok,al,ret=0, ticklen;
2183 const unsigned char *p;
2186 n=s->method->ssl_get_message(s,
2187 SSL3_ST_CR_SESSION_TICKET_A,
2188 SSL3_ST_CR_SESSION_TICKET_B,
2196 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
2198 s->s3->tmp.reuse_message=1;
2201 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
2203 al=SSL_AD_UNEXPECTED_MESSAGE;
2204 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
2209 /* need at least ticket_lifetime_hint + ticket length */
2210 al = SSL_AD_DECODE_ERROR;
2211 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2215 p=d=(unsigned char *)s->init_msg;
2216 n2l(p, s->session->tlsext_tick_lifetime_hint);
2218 /* ticket_lifetime_hint + ticket_length + ticket */
2219 if (ticklen + 6 != n)
2221 al = SSL_AD_DECODE_ERROR;
2222 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2225 if (s->session->tlsext_tick)
2227 OPENSSL_free(s->session->tlsext_tick);
2228 s->session->tlsext_ticklen = 0;
2230 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2231 if (!s->session->tlsext_tick)
2233 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2236 memcpy(s->session->tlsext_tick, p, ticklen);
2237 s->session->tlsext_ticklen = ticklen;
2238 /* There are two ways to detect a resumed ticket sesion.
2239 * One is to set an appropriate session ID and then the server
2240 * must return a match in ServerHello. This allows the normal
2241 * client session ID matching to work and we know much
2242 * earlier that the ticket has been accepted.
2244 * The other way is to set zero length session ID when the
2245 * ticket is presented and rely on the handshake to determine
2246 * session resumption.
2248 * We choose the former approach because this fits in with
2249 * assumptions elsewhere in OpenSSL. The session ID is set
2250 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2253 EVP_Digest(p, ticklen,
2254 s->session->session_id, &s->session->session_id_length,
2255 #ifndef OPENSSL_NO_SHA256
2256 EVP_sha256(), NULL);
2263 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2268 int ssl3_get_cert_status(SSL *s)
2271 unsigned long resplen,n;
2272 const unsigned char *p;
2274 n=s->method->ssl_get_message(s,
2275 SSL3_ST_CR_CERT_STATUS_A,
2276 SSL3_ST_CR_CERT_STATUS_B,
2277 SSL3_MT_CERTIFICATE_STATUS,
2281 if (!ok) return((int)n);
2284 /* need at least status type + length */
2285 al = SSL_AD_DECODE_ERROR;
2286 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2289 p = (unsigned char *)s->init_msg;
2290 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2292 al = SSL_AD_DECODE_ERROR;
2293 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2297 if (resplen + 4 != n)
2299 al = SSL_AD_DECODE_ERROR;
2300 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2303 if (s->tlsext_ocsp_resp)
2304 OPENSSL_free(s->tlsext_ocsp_resp);
2305 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2306 if (!s->tlsext_ocsp_resp)
2308 al = SSL_AD_INTERNAL_ERROR;
2309 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2312 s->tlsext_ocsp_resplen = resplen;
2313 if (s->ctx->tlsext_status_cb)
2316 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2319 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2320 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2325 al = SSL_AD_INTERNAL_ERROR;
2326 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2332 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2337 int ssl3_get_server_done(SSL *s)
2342 n=s->method->ssl_get_message(s,
2343 SSL3_ST_CR_SRVR_DONE_A,
2344 SSL3_ST_CR_SRVR_DONE_B,
2345 SSL3_MT_SERVER_DONE,
2346 30, /* should be very small, like 0 :-) */
2349 if (!ok) return((int)n);
2352 /* should contain no data */
2353 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2354 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2362 int ssl3_send_client_key_exchange(SSL *s)
2366 unsigned long alg_k;
2367 #ifndef OPENSSL_NO_RSA
2369 EVP_PKEY *pkey=NULL;
2371 #ifndef OPENSSL_NO_KRB5
2373 #endif /* OPENSSL_NO_KRB5 */
2374 #ifndef OPENSSL_NO_ECDH
2375 EC_KEY *clnt_ecdh = NULL;
2376 const EC_POINT *srvr_ecpoint = NULL;
2377 EVP_PKEY *srvr_pub_pkey = NULL;
2378 unsigned char *encodedPoint = NULL;
2379 int encoded_pt_len = 0;
2380 BN_CTX * bn_ctx = NULL;
2383 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2385 p = ssl_handshake_start(s);
2387 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2389 /* Fool emacs indentation */
2391 #ifndef OPENSSL_NO_RSA
2392 else if (alg_k & SSL_kRSA)
2395 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2397 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2398 rsa=s->session->sess_cert->peer_rsa_tmp;
2401 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2402 if ((pkey == NULL) ||
2403 (pkey->type != EVP_PKEY_RSA) ||
2404 (pkey->pkey.rsa == NULL))
2406 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2410 EVP_PKEY_free(pkey);
2413 tmp_buf[0]=s->client_version>>8;
2414 tmp_buf[1]=s->client_version&0xff;
2415 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2418 s->session->master_key_length=sizeof tmp_buf;
2421 /* Fix buf for TLS and beyond */
2422 if (s->version > SSL3_VERSION)
2424 n=RSA_public_encrypt(sizeof tmp_buf,
2425 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2427 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2428 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2432 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2436 /* Fix buf for TLS and beyond */
2437 if (s->version > SSL3_VERSION)
2443 s->session->master_key_length=
2444 s->method->ssl3_enc->generate_master_secret(s,
2445 s->session->master_key,
2446 tmp_buf,sizeof tmp_buf);
2447 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2450 #ifndef OPENSSL_NO_KRB5
2451 else if (alg_k & SSL_kKRB5)
2453 krb5_error_code krb5rc;
2454 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2455 /* krb5_data krb5_ap_req; */
2456 krb5_data *enc_ticket;
2457 krb5_data authenticator, *authp = NULL;
2458 EVP_CIPHER_CTX ciph_ctx;
2459 const EVP_CIPHER *enc = NULL;
2460 unsigned char iv[EVP_MAX_IV_LENGTH];
2461 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2462 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2463 + EVP_MAX_IV_LENGTH];
2464 int padl, outl = sizeof(epms);
2466 EVP_CIPHER_CTX_init(&ciph_ctx);
2469 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2471 #endif /* KSSL_DEBUG */
2475 if (KRB5SENDAUTH) authp = &authenticator;
2476 #endif /* KRB5SENDAUTH */
2478 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2480 enc = kssl_map_enc(kssl_ctx->enctype);
2485 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2486 if (krb5rc && kssl_err.text)
2487 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2489 #endif /* KSSL_DEBUG */
2493 ssl3_send_alert(s,SSL3_AL_FATAL,
2494 SSL_AD_HANDSHAKE_FAILURE);
2495 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2500 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2501 ** in place of RFC 2712 KerberosWrapper, as in:
2503 ** Send ticket (copy to *p, set n = length)
2504 ** n = krb5_ap_req.length;
2505 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2506 ** if (krb5_ap_req.data)
2507 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2509 ** Now using real RFC 2712 KerberosWrapper
2510 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2511 ** Note: 2712 "opaque" types are here replaced
2512 ** with a 2-byte length followed by the value.
2514 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2515 ** Where "xx xx" = length bytes. Shown here with
2516 ** optional authenticator omitted.
2519 /* KerberosWrapper.Ticket */
2520 s2n(enc_ticket->length,p);
2521 memcpy(p, enc_ticket->data, enc_ticket->length);
2522 p+= enc_ticket->length;
2523 n = enc_ticket->length + 2;
2525 /* KerberosWrapper.Authenticator */
2526 if (authp && authp->length)
2528 s2n(authp->length,p);
2529 memcpy(p, authp->data, authp->length);
2531 n+= authp->length + 2;
2539 s2n(0,p);/* null authenticator length */
2543 tmp_buf[0]=s->client_version>>8;
2544 tmp_buf[1]=s->client_version&0xff;
2545 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2548 /* 20010420 VRS. Tried it this way; failed.
2549 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2550 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2551 ** kssl_ctx->length);
2552 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2555 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2556 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2558 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2560 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2562 if (outl > (int)sizeof epms)
2564 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2567 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2569 /* KerberosWrapper.EncryptedPreMasterSecret */
2571 memcpy(p, epms, outl);
2575 s->session->master_key_length=
2576 s->method->ssl3_enc->generate_master_secret(s,
2577 s->session->master_key,
2578 tmp_buf, sizeof tmp_buf);
2580 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2581 OPENSSL_cleanse(epms, outl);
2584 #ifndef OPENSSL_NO_DH
2585 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2587 DH *dh_srvr,*dh_clnt;
2588 SESS_CERT *scert = s->session->sess_cert;
2592 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2593 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2597 if (scert->peer_dh_tmp != NULL)
2598 dh_srvr=scert->peer_dh_tmp;
2601 /* we get them from the cert */
2602 int idx = scert->peer_cert_type;
2603 EVP_PKEY *spkey = NULL;
2606 spkey = X509_get_pubkey(
2607 scert->peer_pkeys[idx].x509);
2610 dh_srvr = EVP_PKEY_get1_DH(spkey);
2611 EVP_PKEY_free(spkey);
2613 if (dh_srvr == NULL)
2615 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2616 ERR_R_INTERNAL_ERROR);
2620 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
2622 /* Use client certificate key */
2623 EVP_PKEY *clkey = s->cert->key->privatekey;
2626 dh_clnt = EVP_PKEY_get1_DH(clkey);
2627 if (dh_clnt == NULL)
2629 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2630 ERR_R_INTERNAL_ERROR);
2636 /* generate a new random key */
2637 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2639 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2642 if (!DH_generate_key(dh_clnt))
2644 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2650 /* use the 'p' output buffer for the DH key, but
2651 * make sure to clear it out afterwards */
2653 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2654 if (scert->peer_dh_tmp == NULL)
2659 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2664 /* generate master key from the result */
2665 s->session->master_key_length=
2666 s->method->ssl3_enc->generate_master_secret(s,
2667 s->session->master_key,p,n);
2671 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
2675 /* send off the data */
2676 n=BN_num_bytes(dh_clnt->pub_key);
2678 BN_bn2bin(dh_clnt->pub_key,p);
2684 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2688 #ifndef OPENSSL_NO_ECDH
2689 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2691 const EC_GROUP *srvr_group = NULL;
2693 int ecdh_clnt_cert = 0;
2696 if (s->session->sess_cert == NULL)
2698 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2699 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2703 /* Did we send out the client's
2704 * ECDH share for use in premaster
2705 * computation as part of client certificate?
2706 * If so, set ecdh_clnt_cert to 1.
2708 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2710 /* XXX: For now, we do not support client
2711 * authentication using ECDH certificates.
2712 * To add such support, one needs to add
2713 * code that checks for appropriate
2714 * conditions and sets ecdh_clnt_cert to 1.
2715 * For example, the cert have an ECC
2716 * key on the same curve as the server's
2717 * and the key should be authorized for
2720 * One also needs to add code in ssl3_connect
2721 * to skip sending the certificate verify
2724 * if ((s->cert->key->privatekey != NULL) &&
2725 * (s->cert->key->privatekey->type ==
2726 * EVP_PKEY_EC) && ...)
2727 * ecdh_clnt_cert = 1;
2731 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2733 tkey = s->session->sess_cert->peer_ecdh_tmp;
2737 /* Get the Server Public Key from Cert */
2738 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2739 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2740 if ((srvr_pub_pkey == NULL) ||
2741 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2742 (srvr_pub_pkey->pkey.ec == NULL))
2744 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2745 ERR_R_INTERNAL_ERROR);
2749 tkey = srvr_pub_pkey->pkey.ec;
2752 srvr_group = EC_KEY_get0_group(tkey);
2753 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2755 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2757 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2758 ERR_R_INTERNAL_ERROR);
2762 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2764 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2768 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2770 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2775 /* Reuse key info from our certificate
2776 * We only need our private key to perform
2777 * the ECDH computation.
2779 const BIGNUM *priv_key;
2780 tkey = s->cert->key->privatekey->pkey.ec;
2781 priv_key = EC_KEY_get0_private_key(tkey);
2782 if (priv_key == NULL)
2784 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2787 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2789 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2795 /* Generate a new ECDH key pair */
2796 if (!(EC_KEY_generate_key(clnt_ecdh)))
2798 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2803 /* use the 'p' output buffer for the ECDH key, but
2804 * make sure to clear it out afterwards
2807 field_size = EC_GROUP_get_degree(srvr_group);
2808 if (field_size <= 0)
2810 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2814 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2817 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2822 /* generate master key from the result */
2823 s->session->master_key_length = s->method->ssl3_enc \
2824 -> generate_master_secret(s,
2825 s->session->master_key,
2828 memset(p, 0, n); /* clean up */
2832 /* Send empty client key exch message */
2837 /* First check the size of encoding and
2838 * allocate memory accordingly.
2841 EC_POINT_point2oct(srvr_group,
2842 EC_KEY_get0_public_key(clnt_ecdh),
2843 POINT_CONVERSION_UNCOMPRESSED,
2846 encodedPoint = (unsigned char *)
2847 OPENSSL_malloc(encoded_pt_len *
2848 sizeof(unsigned char));
2849 bn_ctx = BN_CTX_new();
2850 if ((encodedPoint == NULL) ||
2853 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2857 /* Encode the public key */
2858 n = EC_POINT_point2oct(srvr_group,
2859 EC_KEY_get0_public_key(clnt_ecdh),
2860 POINT_CONVERSION_UNCOMPRESSED,
2861 encodedPoint, encoded_pt_len, bn_ctx);
2863 *p = n; /* length of encoded point */
2864 /* Encoded point will be copied here */
2866 /* copy the point */
2867 memcpy((unsigned char *)p, encodedPoint, n);
2868 /* increment n to account for length field */
2872 /* Free allocated memory */
2873 BN_CTX_free(bn_ctx);
2874 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2875 if (clnt_ecdh != NULL)
2876 EC_KEY_free(clnt_ecdh);
2877 EVP_PKEY_free(srvr_pub_pkey);
2879 #endif /* !OPENSSL_NO_ECDH */
2880 else if (alg_k & SSL_kGOST)
2882 /* GOST key exchange message creation */
2883 EVP_PKEY_CTX *pkey_ctx;
2886 unsigned int md_len;
2888 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2889 EVP_MD_CTX *ukm_hash;
2892 /* Get server sertificate PKEY and create ctx from it */
2893 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2895 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2897 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2901 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2902 /* If we have send a certificate, and certificate key
2904 * parameters match those of server certificate, use
2905 * certificate key for key exchange
2908 /* Otherwise, generate ephemeral key pair */
2910 EVP_PKEY_encrypt_init(pkey_ctx);
2911 /* Generate session key */
2912 RAND_bytes(premaster_secret,32);
2913 /* If we have client certificate, use its secret as peer key */
2914 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2915 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2916 /* If there was an error - just ignore it. Ephemeral key
2922 /* Compute shared IV and store it in algorithm-specific
2924 ukm_hash = EVP_MD_CTX_create();
2925 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2926 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2927 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2928 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2929 EVP_MD_CTX_destroy(ukm_hash);
2930 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2932 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2936 /* Make GOST keytransport blob message */
2937 /*Encapsulate it into sequence */
2938 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2940 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2941 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2948 *(p++)= msglen & 0xff;
2953 *(p++)= msglen & 0xff;
2956 memcpy(p, tmp, msglen);
2957 /* Check if pubkey from client certificate was used */
2958 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2960 /* Set flag "skip certificate verify" */
2961 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2963 EVP_PKEY_CTX_free(pkey_ctx);
2964 s->session->master_key_length=
2965 s->method->ssl3_enc->generate_master_secret(s,
2966 s->session->master_key,premaster_secret,32);
2967 EVP_PKEY_free(pub_key);
2970 #ifndef OPENSSL_NO_SRP
2971 else if (alg_k & SSL_kSRP)
2973 if (s->srp_ctx.A != NULL)
2975 /* send off the data */
2976 n=BN_num_bytes(s->srp_ctx.A);
2978 BN_bn2bin(s->srp_ctx.A,p);
2983 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2986 if (s->session->srp_username != NULL)
2987 OPENSSL_free(s->session->srp_username);
2988 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2989 if (s->session->srp_username == NULL)
2991 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2992 ERR_R_MALLOC_FAILURE);
2996 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2998 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
3003 #ifndef OPENSSL_NO_PSK
3004 else if (alg_k & SSL_kPSK)
3006 char identity[PSK_MAX_IDENTITY_LEN];
3007 unsigned char *t = NULL;
3008 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
3009 unsigned int pre_ms_len = 0, psk_len = 0;
3013 if (s->psk_client_callback == NULL)
3015 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3016 SSL_R_PSK_NO_CLIENT_CB);
3020 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
3021 identity, PSK_MAX_IDENTITY_LEN,
3022 psk_or_pre_ms, sizeof(psk_or_pre_ms));
3023 if (psk_len > PSK_MAX_PSK_LEN)
3025 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3026 ERR_R_INTERNAL_ERROR);
3029 else if (psk_len == 0)
3031 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3032 SSL_R_PSK_IDENTITY_NOT_FOUND);
3036 /* create PSK pre_master_secret */
3037 pre_ms_len = 2+psk_len+2+psk_len;
3039 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
3041 memset(t, 0, psk_len);
3045 if (s->session->psk_identity_hint != NULL)
3046 OPENSSL_free(s->session->psk_identity_hint);
3047 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
3048 if (s->ctx->psk_identity_hint != NULL &&
3049 s->session->psk_identity_hint == NULL)
3051 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3052 ERR_R_MALLOC_FAILURE);
3056 if (s->session->psk_identity != NULL)
3057 OPENSSL_free(s->session->psk_identity);
3058 s->session->psk_identity = BUF_strdup(identity);
3059 if (s->session->psk_identity == NULL)
3061 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3062 ERR_R_MALLOC_FAILURE);
3066 s->session->master_key_length =
3067 s->method->ssl3_enc->generate_master_secret(s,
3068 s->session->master_key,
3069 psk_or_pre_ms, pre_ms_len);
3070 n = strlen(identity);
3072 memcpy(p, identity, n);
3076 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
3077 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
3080 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
3087 ssl3_send_alert(s, SSL3_AL_FATAL,
3088 SSL_AD_HANDSHAKE_FAILURE);
3089 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3090 ERR_R_INTERNAL_ERROR);
3094 ssl_set_handshake_header(s, SSL3_MT_CLIENT_KEY_EXCHANGE, n);
3095 s->state=SSL3_ST_CW_KEY_EXCH_B;
3098 /* SSL3_ST_CW_KEY_EXCH_B */
3099 return ssl_do_write(s);
3101 #ifndef OPENSSL_NO_ECDH
3102 BN_CTX_free(bn_ctx);
3103 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
3104 if (clnt_ecdh != NULL)
3105 EC_KEY_free(clnt_ecdh);
3106 EVP_PKEY_free(srvr_pub_pkey);
3111 int ssl3_send_client_verify(SSL *s)
3114 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
3116 EVP_PKEY_CTX *pctx=NULL;
3122 EVP_MD_CTX_init(&mctx);
3124 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
3126 p= ssl_handshake_start(s);
3127 pkey=s->cert->key->privatekey;
3128 /* Create context from key and test if sha1 is allowed as digest */
3129 pctx = EVP_PKEY_CTX_new(pkey,NULL);
3130 EVP_PKEY_sign_init(pctx);
3131 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
3133 if (!SSL_USE_SIGALGS(s))
3134 s->method->ssl3_enc->cert_verify_mac(s,
3136 &(data[MD5_DIGEST_LENGTH]));
3142 /* For TLS v1.2 send signature algorithm and signature
3143 * using agreed digest and cached handshake records.
3145 if (SSL_USE_SIGALGS(s))
3149 const EVP_MD *md = s->cert->key->digest;
3150 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
3152 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
3154 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3155 ERR_R_INTERNAL_ERROR);
3160 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
3163 if (!EVP_SignInit_ex(&mctx, md, NULL)
3164 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
3165 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
3167 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3173 if (!ssl3_digest_cached_records(s))
3177 #ifndef OPENSSL_NO_RSA
3178 if (pkey->type == EVP_PKEY_RSA)
3180 s->method->ssl3_enc->cert_verify_mac(s,
3183 if (RSA_sign(NID_md5_sha1, data,
3184 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
3185 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
3187 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
3195 #ifndef OPENSSL_NO_DSA
3196 if (pkey->type == EVP_PKEY_DSA)
3198 if (!DSA_sign(pkey->save_type,
3199 &(data[MD5_DIGEST_LENGTH]),
3200 SHA_DIGEST_LENGTH,&(p[2]),
3201 (unsigned int *)&j,pkey->pkey.dsa))
3203 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
3211 #ifndef OPENSSL_NO_ECDSA
3212 if (pkey->type == EVP_PKEY_EC)
3214 if (!ECDSA_sign(pkey->save_type,
3215 &(data[MD5_DIGEST_LENGTH]),
3216 SHA_DIGEST_LENGTH,&(p[2]),
3217 (unsigned int *)&j,pkey->pkey.ec))
3219 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3228 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
3230 unsigned char signbuf[64];
3233 s->method->ssl3_enc->cert_verify_mac(s,
3234 NID_id_GostR3411_94,
3236 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
3237 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3238 ERR_R_INTERNAL_ERROR);
3241 for (i=63,j=0; i>=0; j++, i--) {
3249 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
3252 ssl_set_handshake_header(s, SSL3_MT_CERTIFICATE_VERIFY, n);
3253 s->state=SSL3_ST_CW_CERT_VRFY_B;
3255 EVP_MD_CTX_cleanup(&mctx);
3256 EVP_PKEY_CTX_free(pctx);
3257 return ssl_do_write(s);
3259 EVP_MD_CTX_cleanup(&mctx);
3260 EVP_PKEY_CTX_free(pctx);
3264 /* Check a certificate can be used for client authentication. Currently
3265 * check cert exists, if we have a suitable digest for TLS 1.2 if
3266 * static DH client certificates can be used and optionally checks
3267 * suitability for Suite B.
3269 static int ssl3_check_client_certificate(SSL *s)
3271 unsigned long alg_k;
3272 if (!s->cert || !s->cert->key->x509 || !s->cert->key->privatekey)
3274 /* If no suitable signature algorithm can't use certificate */
3275 if (SSL_USE_SIGALGS(s) && !s->cert->key->digest)
3277 /* If strict mode check suitability of chain before using it.
3278 * This also adjusts suite B digest if necessary.
3280 if (s->cert->cert_flags & SSL_CERT_FLAGS_CHECK_TLS_STRICT &&
3281 !tls1_check_chain(s, NULL, NULL, NULL, -2))
3283 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3284 /* See if we can use client certificate for fixed DH */
3285 if (alg_k & (SSL_kDHr|SSL_kDHd))
3287 SESS_CERT *scert = s->session->sess_cert;
3288 int i = scert->peer_cert_type;
3289 EVP_PKEY *clkey = NULL, *spkey = NULL;
3290 clkey = s->cert->key->privatekey;
3291 /* If client key not DH assume it can be used */
3292 if (EVP_PKEY_id(clkey) != EVP_PKEY_DH)
3295 spkey = X509_get_pubkey(scert->peer_pkeys[i].x509);
3298 /* Compare server and client parameters */
3299 i = EVP_PKEY_cmp_parameters(clkey, spkey);
3300 EVP_PKEY_free(spkey);
3304 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
3309 int ssl3_send_client_certificate(SSL *s)
3312 EVP_PKEY *pkey=NULL;
3315 if (s->state == SSL3_ST_CW_CERT_A)
3317 /* Let cert callback update client certificates if required */
3318 if (s->cert->cert_cb)
3320 i = s->cert->cert_cb(s, s->cert->cert_cb_arg);
3323 s->rwstate=SSL_X509_LOOKUP;
3328 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
3331 s->rwstate=SSL_NOTHING;
3333 if (ssl3_check_client_certificate(s))
3334 s->state=SSL3_ST_CW_CERT_C;
3336 s->state=SSL3_ST_CW_CERT_B;
3339 /* We need to get a client cert */
3340 if (s->state == SSL3_ST_CW_CERT_B)
3342 /* If we get an error, we need to
3343 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3344 * We then get retied later */
3346 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3349 s->rwstate=SSL_X509_LOOKUP;
3352 s->rwstate=SSL_NOTHING;
3353 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3355 s->state=SSL3_ST_CW_CERT_B;
3356 if ( !SSL_use_certificate(s,x509) ||
3357 !SSL_use_PrivateKey(s,pkey))
3363 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3366 if (x509 != NULL) X509_free(x509);
3367 if (pkey != NULL) EVP_PKEY_free(pkey);
3368 if (i && !ssl3_check_client_certificate(s))
3372 if (s->version == SSL3_VERSION)
3374 s->s3->tmp.cert_req=0;
3375 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3380 s->s3->tmp.cert_req=2;
3384 /* Ok, we have a cert */
3385 s->state=SSL3_ST_CW_CERT_C;
3388 if (s->state == SSL3_ST_CW_CERT_C)
3390 s->state=SSL3_ST_CW_CERT_D;
3391 ssl3_output_cert_chain(s,
3392 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key);
3394 /* SSL3_ST_CW_CERT_D */
3395 return ssl_do_write(s);
3398 #define has_bits(i,m) (((i)&(m)) == (m))
3400 int ssl3_check_cert_and_algorithm(SSL *s)
3404 EVP_PKEY *pkey=NULL;
3406 #ifndef OPENSSL_NO_RSA
3409 #ifndef OPENSSL_NO_DH
3413 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3414 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3416 /* we don't have a certificate */
3417 if ((alg_a & (SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3420 sc=s->session->sess_cert;
3423 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3427 #ifndef OPENSSL_NO_RSA
3428 rsa=s->session->sess_cert->peer_rsa_tmp;
3430 #ifndef OPENSSL_NO_DH
3431 dh=s->session->sess_cert->peer_dh_tmp;
3434 /* This is the passed certificate */
3436 idx=sc->peer_cert_type;
3437 #ifndef OPENSSL_NO_ECDH
3438 if (idx == SSL_PKEY_ECC)
3440 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3442 { /* check failed */
3443 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3451 else if (alg_a & SSL_aECDSA)
3453 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_ECDSA_SIGNING_CERT);
3456 else if (alg_k & (SSL_kECDHr|SSL_kECDHe))
3458 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_ECDH_CERT);
3462 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3463 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3464 EVP_PKEY_free(pkey);
3467 /* Check that we have a certificate if we require one */
3468 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3470 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3473 #ifndef OPENSSL_NO_DSA
3474 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3476 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3480 #ifndef OPENSSL_NO_RSA
3481 if ((alg_k & SSL_kRSA) &&
3482 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3484 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3488 #ifndef OPENSSL_NO_DH
3489 if ((alg_k & SSL_kEDH) &&
3490 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3492 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3495 else if ((alg_k & SSL_kDHr) && !SSL_USE_SIGALGS(s) &&
3496 !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3498 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3501 #ifndef OPENSSL_NO_DSA
3502 else if ((alg_k & SSL_kDHd) && !SSL_USE_SIGALGS(s) &&
3503 !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3505 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3511 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3513 #ifndef OPENSSL_NO_RSA
3514 if (alg_k & SSL_kRSA)
3517 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3519 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3525 #ifndef OPENSSL_NO_DH
3526 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3529 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3531 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3538 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3544 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3549 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
3550 int ssl3_send_next_proto(SSL *s)
3552 unsigned int len, padding_len;
3555 if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
3557 len = s->next_proto_negotiated_len;
3558 padding_len = 32 - ((len + 2) % 32);
3559 d = (unsigned char *)s->init_buf->data;
3561 memcpy(d + 5, s->next_proto_negotiated, len);
3562 d[5 + len] = padding_len;
3563 memset(d + 6 + len, 0, padding_len);
3564 *(d++)=SSL3_MT_NEXT_PROTO;
3565 l2n3(2 + len + padding_len, d);
3566 s->state = SSL3_ST_CW_NEXT_PROTO_B;
3567 s->init_num = 4 + 2 + len + padding_len;
3571 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3573 #endif /* !OPENSSL_NO_TLSEXT && !OPENSSL_NO_NEXTPROTONEG */
3575 /* Check to see if handshake is full or resumed. Usually this is just a
3576 * case of checking to see if a cache hit has occurred. In the case of
3577 * session tickets we have to check the next message to be sure.
3580 #ifndef OPENSSL_NO_TLSEXT
3581 int ssl3_check_finished(SSL *s)
3586 /* Read the message to see if it is supplemental data,
3587 * regardless if there is a session ticket this function is
3588 * called when we really expect a Certificate message, so
3589 * permit appropriate message length */
3590 n=s->method->ssl_get_message(s,
3596 if (!ok) return((int)n);
3597 s->s3->tmp.reuse_message = 1;
3599 if (s->s3->tmp.message_type == SSL3_MT_SUPPLEMENTAL_DATA)
3601 /* If we have no ticket it cannot be a resumed session. */
3602 if (!s->session->tlsext_tick)
3604 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3605 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3612 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3615 #ifndef OPENSSL_NO_ENGINE
3616 if (s->ctx->client_cert_engine)
3618 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3619 SSL_get_client_CA_list(s),
3620 px509, ppkey, NULL, NULL, NULL);
3625 if (s->ctx->client_cert_cb)
3626 i = s->ctx->client_cert_cb(s,px509,ppkey);
3630 #ifndef OPENSSL_NO_TLSEXT
3631 int tls1_send_client_supplemental_data(SSL *s, int *skip)
3634 if (s->ctx->cli_supp_data_records_count)
3636 unsigned char *p = NULL;
3637 unsigned char *size_loc = NULL;
3638 cli_supp_data_record *record = NULL;
3642 for (i = 0; i < s->ctx->cli_supp_data_records_count; i++)
3644 const unsigned char *out = NULL;
3645 unsigned short outlen = 0;
3647 record = &s->ctx->cli_supp_data_records[i];
3649 /* NULL callback or -1 omits supp data entry*/
3652 cb_retval = record->fn2(s, record->supp_data_type,
3655 if (cb_retval == -1)
3656 continue; /* skip this supp data entry */
3659 SSLerr(SSL_F_TLS1_SEND_CLIENT_SUPPLEMENTAL_DATA,ERR_R_BUF_LIB);
3662 if (outlen == 0 || TLSEXT_MAXLEN_supplemental_data < outlen + 4 + length)
3664 SSLerr(SSL_F_TLS1_SEND_CLIENT_SUPPLEMENTAL_DATA,ERR_R_BUF_LIB);
3667 /* if first entry, write handshake message type */
3670 if (!BUF_MEM_grow_clean(s->init_buf, 4))
3672 SSLerr(SSL_F_TLS1_SEND_CLIENT_SUPPLEMENTAL_DATA,ERR_R_BUF_LIB);
3675 p = (unsigned char *)s->init_buf->data;
3676 *(p++) = SSL3_MT_SUPPLEMENTAL_DATA;
3677 /* update message length when all
3678 * callbacks complete */
3680 /* skip over handshake length field (3
3681 * bytes) and supp_data length field
3686 if (!BUF_MEM_grow(s->init_buf, outlen + 4))
3688 SSLerr(SSL_F_TLS1_SEND_CLIENT_SUPPLEMENTAL_DATA,ERR_R_BUF_LIB);
3691 s2n(record->supp_data_type, p);
3693 memcpy(p, out, outlen);
3694 length += (outlen + 4);
3699 /* write handshake length */
3700 l2n3(length - 4, size_loc);
3701 /* supp_data length */
3702 l2n3(length - 7, size_loc);
3703 s->state = SSL3_ST_CW_SUPPLEMENTAL_DATA_B;
3704 s->init_num = length;
3706 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3710 /* no supp data message sent */
3717 ssl3_send_alert(s,SSL3_AL_FATAL,al);
3721 int tls1_get_server_supplemental_data(SSL *s)
3726 const unsigned char *p, *d;
3727 unsigned short supp_data_entry_type = 0;
3728 unsigned short supp_data_entry_len = 0;
3729 unsigned long supp_data_len = 0;
3733 n=s->method->ssl_get_message(s,
3734 SSL3_ST_CR_SUPPLEMENTAL_DATA_A,
3735 SSL3_ST_CR_SUPPLEMENTAL_DATA_B,
3736 SSL3_MT_SUPPLEMENTAL_DATA,
3737 /* use default limit */
3738 TLSEXT_MAXLEN_supplemental_data,
3741 if (!ok) return((int)n);
3743 p = (unsigned char *)s->init_msg;
3745 /* The message cannot be empty */
3748 al = SSL_AD_DECODE_ERROR;
3749 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH);
3752 n2l3(p, supp_data_len);
3753 while (p < d+supp_data_len)
3755 n2s(p, supp_data_entry_type);
3756 n2s(p, supp_data_entry_len);
3757 /* if there is a callback for this supp data type, send it */
3758 for (i=0; i < s->ctx->cli_supp_data_records_count; i++)
3760 if (s->ctx->cli_supp_data_records[i].supp_data_type == supp_data_entry_type &&
3761 s->ctx->cli_supp_data_records[i].fn1)
3763 cb_retval = s->ctx->cli_supp_data_records[i].fn1(s, supp_data_entry_type, p,
3764 supp_data_entry_len, &al,
3765 s->ctx->cli_supp_data_records[i].arg);
3768 SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA, ERR_R_SSL_LIB);
3773 p += supp_data_entry_len;
3777 ssl3_send_alert(s,SSL3_AL_FATAL,al);