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 int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
172 #ifndef OPENSSL_NO_SSL3_METHOD
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)
187 int ssl3_connect(SSL *s)
190 unsigned long Time=(unsigned long)time(NULL);
191 void (*cb)(const SSL *ssl,int type,int val)=NULL;
193 int new_state,state,skip=0;
195 RAND_add(&Time,sizeof(Time),0);
199 if (s->info_callback != NULL)
201 else if (s->ctx->info_callback != NULL)
202 cb=s->ctx->info_callback;
205 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
207 #ifndef OPENSSL_NO_HEARTBEATS
208 /* If we're awaiting a HeartbeatResponse, pretend we
209 * already got and don't await it anymore, because
210 * Heartbeats don't make sense during handshakes anyway.
212 if (s->tlsext_hb_pending)
214 s->tlsext_hb_pending = 0;
225 case SSL_ST_RENEGOTIATE:
227 s->state=SSL_ST_CONNECT;
228 s->ctx->stats.sess_connect_renegotiate++;
229 #ifndef OPENSSL_NO_TLSEXT
231 * If renegotiating, the server may choose to not issue
232 * a new ticket, so reset the flag. It will be set to
233 * the right value when parsing ServerHello extensions.
235 s->tlsext_ticket_expected = 0;
240 case SSL_ST_BEFORE|SSL_ST_CONNECT:
241 case SSL_ST_OK|SSL_ST_CONNECT:
244 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
246 if ((s->version & 0xff00 ) != 0x0300)
248 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
253 /* s->version=SSL3_VERSION; */
254 s->type=SSL_ST_CONNECT;
256 if (s->init_buf == NULL)
258 if ((buf=BUF_MEM_new()) == NULL)
263 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
272 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
274 /* setup buffing BIO */
275 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
277 /* don't push the buffering BIO quite yet */
279 ssl3_init_finished_mac(s);
281 s->state=SSL3_ST_CW_CLNT_HELLO_A;
282 s->ctx->stats.sess_connect++;
286 case SSL3_ST_CW_CLNT_HELLO_A:
287 case SSL3_ST_CW_CLNT_HELLO_B:
290 ret=ssl3_client_hello(s);
291 if (ret <= 0) goto end;
292 s->state=SSL3_ST_CR_SRVR_HELLO_A;
295 /* turn on buffering for the next lot of output */
296 if (s->bbio != s->wbio)
297 s->wbio=BIO_push(s->bbio,s->wbio);
301 case SSL3_ST_CR_SRVR_HELLO_A:
302 case SSL3_ST_CR_SRVR_HELLO_B:
303 ret=ssl3_get_server_hello(s);
304 if (ret <= 0) goto end;
308 s->state=SSL3_ST_CR_FINISHED_A;
309 #ifndef OPENSSL_NO_TLSEXT
310 if (s->tlsext_ticket_expected)
312 /* receive renewed session ticket */
313 s->state=SSL3_ST_CR_SESSION_TICKET_A;
318 s->state=SSL3_ST_CR_CERT_A;
322 case SSL3_ST_CR_CERT_A:
323 case SSL3_ST_CR_CERT_B:
324 #ifndef OPENSSL_NO_TLSEXT
325 ret=ssl3_check_finished(s);
326 if (ret <= 0) goto end;
330 if (s->tlsext_ticket_expected)
331 s->state=SSL3_ST_CR_SESSION_TICKET_A;
333 s->state=SSL3_ST_CR_FINISHED_A;
338 /* Check if it is anon DH/ECDH, SRP auth */
340 if (!(s->s3->tmp.new_cipher->algorithm_auth & (SSL_aNULL|SSL_aSRP)) &&
341 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
343 ret=ssl3_get_server_certificate(s);
344 if (ret <= 0) goto end;
345 #ifndef OPENSSL_NO_TLSEXT
346 if (s->tlsext_status_expected)
347 s->state=SSL3_ST_CR_CERT_STATUS_A;
349 s->state=SSL3_ST_CR_KEY_EXCH_A;
354 s->state=SSL3_ST_CR_KEY_EXCH_A;
361 s->state=SSL3_ST_CR_KEY_EXCH_A;
366 case SSL3_ST_CR_KEY_EXCH_A:
367 case SSL3_ST_CR_KEY_EXCH_B:
368 ret=ssl3_get_key_exchange(s);
369 if (ret <= 0) goto end;
370 s->state=SSL3_ST_CR_CERT_REQ_A;
373 /* at this point we check that we have the
374 * required stuff from the server */
375 if (!ssl3_check_cert_and_algorithm(s))
382 case SSL3_ST_CR_CERT_REQ_A:
383 case SSL3_ST_CR_CERT_REQ_B:
384 ret=ssl3_get_certificate_request(s);
385 if (ret <= 0) goto end;
386 s->state=SSL3_ST_CR_SRVR_DONE_A;
390 case SSL3_ST_CR_SRVR_DONE_A:
391 case SSL3_ST_CR_SRVR_DONE_B:
392 ret=ssl3_get_server_done(s);
393 if (ret <= 0) goto end;
394 #ifndef OPENSSL_NO_SRP
395 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP)
397 if ((ret = SRP_Calc_A_param(s))<=0)
399 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SRP_A_CALC);
400 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
405 if (s->s3->tmp.cert_req)
406 s->state=SSL3_ST_CW_CERT_A;
408 s->state=SSL3_ST_CW_KEY_EXCH_A;
413 case SSL3_ST_CW_CERT_A:
414 case SSL3_ST_CW_CERT_B:
415 case SSL3_ST_CW_CERT_C:
416 case SSL3_ST_CW_CERT_D:
417 ret=ssl3_send_client_certificate(s);
418 if (ret <= 0) goto end;
419 s->state=SSL3_ST_CW_KEY_EXCH_A;
423 case SSL3_ST_CW_KEY_EXCH_A:
424 case SSL3_ST_CW_KEY_EXCH_B:
425 ret=ssl3_send_client_key_exchange(s);
426 if (ret <= 0) goto end;
427 /* EAY EAY EAY need to check for DH fix cert
429 /* For TLS, cert_req is set to 2, so a cert chain
430 * of nothing is sent, but no verify packet is sent */
431 /* XXX: For now, we do not support client
432 * authentication in ECDH cipher suites with
433 * ECDH (rather than ECDSA) certificates.
434 * We need to skip the certificate verify
435 * message when client's ECDH public key is sent
436 * inside the client certificate.
438 if (s->s3->tmp.cert_req == 1)
440 s->state=SSL3_ST_CW_CERT_VRFY_A;
444 s->state=SSL3_ST_CW_CHANGE_A;
445 s->s3->change_cipher_spec=0;
447 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
449 s->state=SSL3_ST_CW_CHANGE_A;
450 s->s3->change_cipher_spec=0;
456 case SSL3_ST_CW_CERT_VRFY_A:
457 case SSL3_ST_CW_CERT_VRFY_B:
458 ret=ssl3_send_client_verify(s);
459 if (ret <= 0) goto end;
460 s->state=SSL3_ST_CW_CHANGE_A;
462 s->s3->change_cipher_spec=0;
465 case SSL3_ST_CW_CHANGE_A:
466 case SSL3_ST_CW_CHANGE_B:
467 ret=ssl3_send_change_cipher_spec(s,
468 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
469 if (ret <= 0) goto end;
471 #if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
472 s->state=SSL3_ST_CW_FINISHED_A;
474 if (s->s3->next_proto_neg_seen)
475 s->state=SSL3_ST_CW_NEXT_PROTO_A;
477 s->state=SSL3_ST_CW_FINISHED_A;
481 s->session->cipher=s->s3->tmp.new_cipher;
482 #ifdef OPENSSL_NO_COMP
483 s->session->compress_meth=0;
485 if (s->s3->tmp.new_compression == NULL)
486 s->session->compress_meth=0;
488 s->session->compress_meth=
489 s->s3->tmp.new_compression->id;
491 if (!s->method->ssl3_enc->setup_key_block(s))
497 if (!s->method->ssl3_enc->change_cipher_state(s,
498 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
506 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
507 case SSL3_ST_CW_NEXT_PROTO_A:
508 case SSL3_ST_CW_NEXT_PROTO_B:
509 ret=ssl3_send_next_proto(s);
510 if (ret <= 0) goto end;
511 s->state=SSL3_ST_CW_FINISHED_A;
515 case SSL3_ST_CW_FINISHED_A:
516 case SSL3_ST_CW_FINISHED_B:
517 ret=ssl3_send_finished(s,
518 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
519 s->method->ssl3_enc->client_finished_label,
520 s->method->ssl3_enc->client_finished_label_len);
521 if (ret <= 0) goto end;
522 s->s3->flags |= SSL3_FLAGS_CCS_OK;
523 s->state=SSL3_ST_CW_FLUSH;
526 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
529 s->s3->tmp.next_state=SSL_ST_OK;
530 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
533 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
534 s->s3->delay_buf_pop_ret=0;
539 #ifndef OPENSSL_NO_TLSEXT
540 /* Allow NewSessionTicket if ticket expected */
541 if (s->tlsext_ticket_expected)
542 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
546 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
551 #ifndef OPENSSL_NO_TLSEXT
552 case SSL3_ST_CR_SESSION_TICKET_A:
553 case SSL3_ST_CR_SESSION_TICKET_B:
554 ret=ssl3_get_new_session_ticket(s);
555 if (ret <= 0) goto end;
556 s->state=SSL3_ST_CR_FINISHED_A;
560 case SSL3_ST_CR_CERT_STATUS_A:
561 case SSL3_ST_CR_CERT_STATUS_B:
562 ret=ssl3_get_cert_status(s);
563 if (ret <= 0) goto end;
564 s->state=SSL3_ST_CR_KEY_EXCH_A;
569 case SSL3_ST_CR_FINISHED_A:
570 case SSL3_ST_CR_FINISHED_B:
572 s->s3->flags |= SSL3_FLAGS_CCS_OK;
573 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
574 SSL3_ST_CR_FINISHED_B);
575 if (ret <= 0) goto end;
578 s->state=SSL3_ST_CW_CHANGE_A;
584 case SSL3_ST_CW_FLUSH:
585 s->rwstate=SSL_WRITING;
586 if (BIO_flush(s->wbio) <= 0)
591 s->rwstate=SSL_NOTHING;
592 s->state=s->s3->tmp.next_state;
596 /* clean a few things up */
597 ssl3_cleanup_key_block(s);
599 if (s->init_buf != NULL)
601 BUF_MEM_free(s->init_buf);
605 /* If we are not 'joining' the last two packets,
606 * remove the buffering now */
607 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
608 ssl_free_wbio_buffer(s);
609 /* else do it later in ssl3_write */
615 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
616 if (s->hit) s->ctx->stats.sess_hit++;
620 s->handshake_func=ssl3_connect;
621 s->ctx->stats.sess_connect_good++;
623 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
629 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
635 /* did we do anything */
636 if (!s->s3->tmp.reuse_message && !skip)
640 if ((ret=BIO_flush(s->wbio)) <= 0)
644 if ((cb != NULL) && (s->state != state))
648 cb(s,SSL_CB_CONNECT_LOOP,1);
659 cb(s,SSL_CB_CONNECT_EXIT,ret);
664 int ssl3_client_hello(SSL *s)
670 #ifndef OPENSSL_NO_COMP
675 buf=(unsigned char *)s->init_buf->data;
676 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
678 SSL_SESSION *sess = s->session;
679 if ((sess == NULL) ||
680 (sess->ssl_version != s->version) ||
681 #ifdef OPENSSL_NO_TLSEXT
682 !sess->session_id_length ||
684 (!sess->session_id_length && !sess->tlsext_tick) ||
686 (sess->not_resumable))
688 if (!ssl_get_new_session(s,0))
691 /* else use the pre-loaded session */
693 p=s->s3->client_random;
695 if (ssl_fill_hello_random(s, 0, p, SSL3_RANDOM_SIZE) <= 0)
698 /* Do the message type and length last */
701 /* version indicates the negotiated version: for example from
702 * an SSLv2/v3 compatible client hello). The client_version
703 * field is the maximum version we permit and it is also
704 * used in RSA encrypted premaster secrets. Some servers can
705 * choke if we initially report a higher version then
706 * renegotiate to a lower one in the premaster secret. This
707 * didn't happen with TLS 1.0 as most servers supported it
708 * but it can with TLS 1.1 or later if the server only supports
711 * Possible scenario with previous logic:
712 * 1. Client hello indicates TLS 1.2
713 * 2. Server hello says TLS 1.0
714 * 3. RSA encrypted premaster secret uses 1.2.
715 * 4. Handhaked proceeds using TLS 1.0.
716 * 5. Server sends hello request to renegotiate.
717 * 6. Client hello indicates TLS v1.0 as we now
718 * know that is maximum server supports.
719 * 7. Server chokes on RSA encrypted premaster secret
720 * containing version 1.0.
722 * For interoperability it should be OK to always use the
723 * maximum version we support in client hello and then rely
724 * on the checking of version to ensure the servers isn't
725 * being inconsistent: for example initially negotiating with
726 * TLS 1.0 and renegotiating with TLS 1.2. We do this by using
727 * client_version in client hello and not resetting it to
728 * the negotiated version.
731 *(p++)=s->version>>8;
732 *(p++)=s->version&0xff;
733 s->client_version=s->version;
735 *(p++)=s->client_version>>8;
736 *(p++)=s->client_version&0xff;
740 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
747 i=s->session->session_id_length;
751 if (i > (int)sizeof(s->session->session_id))
753 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
756 memcpy(p,s->session->session_id,i);
760 /* Ciphers supported */
761 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
764 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
767 #ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
768 /* Some servers hang if client hello > 256 bytes
769 * as hack workaround chop number of supported ciphers
770 * to keep it well below this if we use TLS v1.2
772 if (TLS1_get_version(s) >= TLS1_2_VERSION
773 && i > OPENSSL_MAX_TLS1_2_CIPHER_LENGTH)
774 i = OPENSSL_MAX_TLS1_2_CIPHER_LENGTH & ~1;
780 #ifdef OPENSSL_NO_COMP
784 if ((s->options & SSL_OP_NO_COMPRESSION)
785 || !s->ctx->comp_methods)
788 j=sk_SSL_COMP_num(s->ctx->comp_methods);
792 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
796 *(p++)=0; /* Add the NULL method */
798 #ifndef OPENSSL_NO_TLSEXT
800 if (ssl_prepare_clienthello_tlsext(s) <= 0)
802 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
805 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
807 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
814 *(d++)=SSL3_MT_CLIENT_HELLO;
817 s->state=SSL3_ST_CW_CLNT_HELLO_B;
818 /* number of bytes to write */
823 /* SSL3_ST_CW_CLNT_HELLO_B */
824 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
829 int ssl3_get_server_hello(SSL *s)
831 STACK_OF(SSL_CIPHER) *sk;
837 #ifndef OPENSSL_NO_COMP
841 n=s->method->ssl_get_message(s,
842 SSL3_ST_CR_SRVR_HELLO_A,
843 SSL3_ST_CR_SRVR_HELLO_B,
848 if (!ok) return((int)n);
850 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
852 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
854 if ( s->d1->send_cookie == 0)
856 s->s3->tmp.reuse_message = 1;
859 else /* already sent a cookie */
861 al=SSL_AD_UNEXPECTED_MESSAGE;
862 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
868 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
870 al=SSL_AD_UNEXPECTED_MESSAGE;
871 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
875 d=p=(unsigned char *)s->init_msg;
877 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
879 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
880 s->version=(s->version&0xff00)|p[1];
881 al=SSL_AD_PROTOCOL_VERSION;
886 /* load the server hello data */
887 /* load the server random */
888 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
891 /* get the session-id */
894 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
896 al=SSL_AD_ILLEGAL_PARAMETER;
897 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
901 #ifndef OPENSSL_NO_TLSEXT
902 /* check if we want to resume the session based on external pre-shared secret */
903 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
905 SSL_CIPHER *pref_cipher=NULL;
906 s->session->master_key_length=sizeof(s->session->master_key);
907 if (s->tls_session_secret_cb(s, s->session->master_key,
908 &s->session->master_key_length,
910 s->tls_session_secret_cb_arg))
912 s->session->cipher = pref_cipher ?
913 pref_cipher : ssl_get_cipher_by_char(s, p+j);
914 s->s3->flags |= SSL3_FLAGS_CCS_OK;
917 #endif /* OPENSSL_NO_TLSEXT */
919 if (j != 0 && j == s->session->session_id_length
920 && memcmp(p,s->session->session_id,j) == 0)
922 if(s->sid_ctx_length != s->session->sid_ctx_length
923 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
925 /* actually a client application bug */
926 al=SSL_AD_ILLEGAL_PARAMETER;
927 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
930 s->s3->flags |= SSL3_FLAGS_CCS_OK;
933 else /* a miss or crap from the other end */
935 /* If we were trying for session-id reuse, make a new
936 * SSL_SESSION so we don't stuff up other people */
938 if (s->session->session_id_length > 0)
940 if (!ssl_get_new_session(s,0))
942 al=SSL_AD_INTERNAL_ERROR;
946 s->session->session_id_length=j;
947 memcpy(s->session->session_id,p,j); /* j could be 0 */
950 c=ssl_get_cipher_by_char(s,p);
954 al=SSL_AD_ILLEGAL_PARAMETER;
955 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
958 /* TLS v1.2 only ciphersuites require v1.2 or later */
959 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
960 (TLS1_get_version(s) < TLS1_2_VERSION))
962 al=SSL_AD_ILLEGAL_PARAMETER;
963 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
966 #ifndef OPENSSL_NO_SRP
967 if (((c->algorithm_mkey & SSL_kSRP) || (c->algorithm_auth & SSL_aSRP)) &&
968 !(s->srp_ctx.srp_Mask & SSL_kSRP))
970 al=SSL_AD_ILLEGAL_PARAMETER;
971 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
974 #endif /* OPENSSL_NO_SRP */
975 p+=ssl_put_cipher_by_char(s,NULL,NULL);
977 sk=ssl_get_ciphers_by_id(s);
978 i=sk_SSL_CIPHER_find(sk,c);
981 /* we did not say we would use this cipher */
982 al=SSL_AD_ILLEGAL_PARAMETER;
983 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
987 /* Depending on the session caching (internal/external), the cipher
988 and/or cipher_id values may not be set. Make sure that
989 cipher_id is set and use it for comparison. */
990 if (s->session->cipher)
991 s->session->cipher_id = s->session->cipher->id;
992 if (s->hit && (s->session->cipher_id != c->id))
994 /* Workaround is now obsolete */
997 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
1000 al=SSL_AD_ILLEGAL_PARAMETER;
1001 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
1005 s->s3->tmp.new_cipher=c;
1006 /* Don't digest cached records if TLS v1.2: we may need them for
1007 * client authentication.
1009 if (TLS1_get_version(s) < TLS1_2_VERSION && !ssl3_digest_cached_records(s))
1011 al = SSL_AD_INTERNAL_ERROR;
1014 /* lets get the compression algorithm */
1016 #ifdef OPENSSL_NO_COMP
1019 al=SSL_AD_ILLEGAL_PARAMETER;
1020 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
1023 /* If compression is disabled we'd better not try to resume a session
1024 * using compression.
1026 if (s->session->compress_meth != 0)
1028 al=SSL_AD_INTERNAL_ERROR;
1029 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
1034 if (s->hit && j != s->session->compress_meth)
1036 al=SSL_AD_ILLEGAL_PARAMETER;
1037 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
1042 else if (s->options & SSL_OP_NO_COMPRESSION)
1044 al=SSL_AD_ILLEGAL_PARAMETER;
1045 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
1049 comp=ssl3_comp_find(s->ctx->comp_methods,j);
1051 if ((j != 0) && (comp == NULL))
1053 al=SSL_AD_ILLEGAL_PARAMETER;
1054 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
1059 s->s3->tmp.new_compression=comp;
1063 #ifndef OPENSSL_NO_TLSEXT
1065 if (s->version >= SSL3_VERSION)
1067 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
1069 /* 'al' set by ssl_parse_serverhello_tlsext */
1070 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
1073 if (ssl_check_serverhello_tlsext(s) <= 0)
1075 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
1083 /* wrong packet length */
1084 al=SSL_AD_DECODE_ERROR;
1085 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
1091 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1096 int ssl3_get_server_certificate(SSL *s)
1098 int al,i,ok,ret= -1;
1099 unsigned long n,nc,llen,l;
1101 const unsigned char *q,*p;
1103 STACK_OF(X509) *sk=NULL;
1105 EVP_PKEY *pkey=NULL;
1106 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1108 n=s->method->ssl_get_message(s,
1115 if (!ok) return((int)n);
1117 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1118 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1119 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1121 s->s3->tmp.reuse_message=1;
1125 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1127 al=SSL_AD_UNEXPECTED_MESSAGE;
1128 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1131 p=d=(unsigned char *)s->init_msg;
1133 if ((sk=sk_X509_new_null()) == NULL)
1135 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1142 al=SSL_AD_DECODE_ERROR;
1143 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1146 for (nc=0; nc<llen; )
1149 if ((l+nc+3) > llen)
1151 al=SSL_AD_DECODE_ERROR;
1152 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1157 x=d2i_X509(NULL,&q,l);
1160 al=SSL_AD_BAD_CERTIFICATE;
1161 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1166 al=SSL_AD_DECODE_ERROR;
1167 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1170 if (!sk_X509_push(sk,x))
1172 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1180 i=ssl_verify_cert_chain(s,sk);
1181 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1182 #ifndef OPENSSL_NO_KRB5
1183 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1184 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1185 #endif /* OPENSSL_NO_KRB5 */
1188 al=ssl_verify_alarm_type(s->verify_result);
1189 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1192 ERR_clear_error(); /* but we keep s->verify_result */
1194 sc=ssl_sess_cert_new();
1195 if (sc == NULL) goto err;
1197 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1198 s->session->sess_cert=sc;
1201 /* Inconsistency alert: cert_chain does include the peer's
1202 * certificate, which we don't include in s3_srvr.c */
1203 x=sk_X509_value(sk,0);
1205 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1207 pkey=X509_get_pubkey(x);
1209 /* VRS: allow null cert if auth == KRB5 */
1210 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1211 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1215 printf("pkey,x = %p, %p\n", pkey,x);
1216 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1217 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1218 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1219 #endif /* KSSL_DEBUG */
1221 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1225 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1226 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1230 i=ssl_cert_type(x,pkey);
1231 if (need_cert && i < 0)
1235 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1236 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1242 sc->peer_cert_type=i;
1243 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1244 /* Why would the following ever happen?
1245 * We just created sc a couple of lines ago. */
1246 if (sc->peer_pkeys[i].x509 != NULL)
1247 X509_free(sc->peer_pkeys[i].x509);
1248 sc->peer_pkeys[i].x509=x;
1249 sc->peer_key= &(sc->peer_pkeys[i]);
1251 if (s->session->peer != NULL)
1252 X509_free(s->session->peer);
1253 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1258 sc->peer_cert_type=i;
1261 if (s->session->peer != NULL)
1262 X509_free(s->session->peer);
1263 s->session->peer=NULL;
1265 s->session->verify_result = s->verify_result;
1273 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1276 EVP_PKEY_free(pkey);
1278 sk_X509_pop_free(sk,X509_free);
1282 int ssl3_get_key_exchange(SSL *s)
1284 #ifndef OPENSSL_NO_RSA
1285 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1288 unsigned char *param,*p;
1290 long i,param_len,n,alg_k,alg_a;
1291 EVP_PKEY *pkey=NULL;
1292 const EVP_MD *md = NULL;
1293 #ifndef OPENSSL_NO_RSA
1296 #ifndef OPENSSL_NO_DH
1299 #ifndef OPENSSL_NO_ECDH
1300 EC_KEY *ecdh = NULL;
1301 BN_CTX *bn_ctx = NULL;
1302 EC_POINT *srvr_ecpoint = NULL;
1304 int encoded_pt_len = 0;
1307 /* use same message size as in ssl3_get_certificate_request()
1308 * as ServerKeyExchange message may be skipped */
1309 n=s->method->ssl_get_message(s,
1310 SSL3_ST_CR_KEY_EXCH_A,
1311 SSL3_ST_CR_KEY_EXCH_B,
1315 if (!ok) return((int)n);
1317 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1319 #ifndef OPENSSL_NO_PSK
1320 /* In plain PSK ciphersuite, ServerKeyExchange can be
1321 omitted if no identity hint is sent. Set
1322 session->sess_cert anyway to avoid problems
1324 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1326 s->session->sess_cert=ssl_sess_cert_new();
1327 if (s->ctx->psk_identity_hint)
1328 OPENSSL_free(s->ctx->psk_identity_hint);
1329 s->ctx->psk_identity_hint = NULL;
1332 s->s3->tmp.reuse_message=1;
1336 param=p=(unsigned char *)s->init_msg;
1337 if (s->session->sess_cert != NULL)
1339 #ifndef OPENSSL_NO_RSA
1340 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1342 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1343 s->session->sess_cert->peer_rsa_tmp=NULL;
1346 #ifndef OPENSSL_NO_DH
1347 if (s->session->sess_cert->peer_dh_tmp)
1349 DH_free(s->session->sess_cert->peer_dh_tmp);
1350 s->session->sess_cert->peer_dh_tmp=NULL;
1353 #ifndef OPENSSL_NO_ECDH
1354 if (s->session->sess_cert->peer_ecdh_tmp)
1356 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1357 s->session->sess_cert->peer_ecdh_tmp=NULL;
1363 s->session->sess_cert=ssl_sess_cert_new();
1366 /* Total length of the parameters including the length prefix */
1369 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1370 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1371 EVP_MD_CTX_init(&md_ctx);
1373 al=SSL_AD_DECODE_ERROR;
1375 #ifndef OPENSSL_NO_PSK
1376 if (alg_k & SSL_kPSK)
1378 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1383 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1384 SSL_R_LENGTH_TOO_SHORT);
1389 /* Store PSK identity hint for later use, hint is used
1390 * in ssl3_send_client_key_exchange. Assume that the
1391 * maximum length of a PSK identity hint can be as
1392 * long as the maximum length of a PSK identity. */
1393 if (i > PSK_MAX_IDENTITY_LEN)
1395 al=SSL_AD_HANDSHAKE_FAILURE;
1396 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1397 SSL_R_DATA_LENGTH_TOO_LONG);
1400 if (i > n - param_len)
1402 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1403 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1408 /* If received PSK identity hint contains NULL
1409 * characters, the hint is truncated from the first
1410 * NULL. p may not be ending with NULL, so create a
1411 * NULL-terminated string. */
1412 memcpy(tmp_id_hint, p, i);
1413 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1414 if (s->ctx->psk_identity_hint != NULL)
1415 OPENSSL_free(s->ctx->psk_identity_hint);
1416 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1417 if (s->ctx->psk_identity_hint == NULL)
1419 al=SSL_AD_HANDSHAKE_FAILURE;
1420 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1428 #endif /* !OPENSSL_NO_PSK */
1429 #ifndef OPENSSL_NO_SRP
1430 if (alg_k & SSL_kSRP)
1435 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1436 SSL_R_LENGTH_TOO_SHORT);
1441 if (i > n - param_len)
1443 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1448 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1450 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1456 if (2 > n - param_len)
1458 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1459 SSL_R_LENGTH_TOO_SHORT);
1466 if (i > n - param_len)
1468 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1473 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1475 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1481 if (1 > n - param_len)
1483 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1484 SSL_R_LENGTH_TOO_SHORT);
1489 i = (unsigned int)(p[0]);
1492 if (i > n - param_len)
1494 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1499 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1501 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1506 if (2 > n - param_len)
1508 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1509 SSL_R_LENGTH_TOO_SHORT);
1516 if (i > n - param_len)
1518 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1523 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1525 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1531 if (!srp_verify_server_param(s, &al))
1533 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_PARAMETERS);
1537 /* We must check if there is a certificate */
1538 #ifndef OPENSSL_NO_RSA
1539 if (alg_a & SSL_aRSA)
1540 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1545 #ifndef OPENSSL_NO_DSA
1546 else if (alg_a & SSL_aDSS)
1547 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1551 #endif /* !OPENSSL_NO_SRP */
1552 #ifndef OPENSSL_NO_RSA
1553 if (alg_k & SSL_kRSA)
1555 if ((rsa=RSA_new()) == NULL)
1557 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1564 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1565 SSL_R_LENGTH_TOO_SHORT);
1570 if (i > n - param_len)
1572 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1577 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1579 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1584 if (2 > n - param_len)
1586 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1587 SSL_R_LENGTH_TOO_SHORT);
1594 if (i > n - param_len)
1596 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1601 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1603 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1609 /* this should be because we are using an export cipher */
1610 if (alg_a & SSL_aRSA)
1611 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1614 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1617 s->session->sess_cert->peer_rsa_tmp=rsa;
1620 #else /* OPENSSL_NO_RSA */
1624 #ifndef OPENSSL_NO_DH
1625 else if (alg_k & SSL_kEDH)
1627 if ((dh=DH_new()) == NULL)
1629 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1636 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1637 SSL_R_LENGTH_TOO_SHORT);
1642 if (i > n - param_len)
1644 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1649 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1651 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1656 if (2 > n - param_len)
1658 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1659 SSL_R_LENGTH_TOO_SHORT);
1666 if (i > n - param_len)
1668 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1673 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1675 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1680 if (2 > n - param_len)
1682 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1683 SSL_R_LENGTH_TOO_SHORT);
1690 if (i > n - param_len)
1692 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1697 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1699 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1705 #ifndef OPENSSL_NO_RSA
1706 if (alg_a & SSL_aRSA)
1707 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1712 #ifndef OPENSSL_NO_DSA
1713 else if (alg_a & SSL_aDSS)
1714 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1716 /* else anonymous DH, so no certificate or pkey. */
1718 s->session->sess_cert->peer_dh_tmp=dh;
1721 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1723 al=SSL_AD_ILLEGAL_PARAMETER;
1724 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1727 #endif /* !OPENSSL_NO_DH */
1729 #ifndef OPENSSL_NO_ECDH
1730 else if (alg_k & SSL_kEECDH)
1733 const EC_GROUP *group;
1735 if ((ecdh=EC_KEY_new()) == NULL)
1737 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1741 /* Extract elliptic curve parameters and the
1742 * server's ephemeral ECDH public key.
1743 * Keep accumulating lengths of various components in
1744 * param_len and make sure it never exceeds n.
1747 /* XXX: For now we only support named (not generic) curves
1748 * and the ECParameters in this case is just three bytes. We
1749 * also need one byte for the length of the encoded point
1754 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1755 SSL_R_LENGTH_TOO_SHORT);
1759 if ((*p != NAMED_CURVE_TYPE) ||
1760 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1762 al=SSL_AD_INTERNAL_ERROR;
1763 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1767 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1770 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1773 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1775 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1778 EC_GROUP_free(ngroup);
1780 group = EC_KEY_get0_group(ecdh);
1782 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1783 (EC_GROUP_get_degree(group) > 163))
1785 al=SSL_AD_EXPORT_RESTRICTION;
1786 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1792 /* Next, get the encoded ECPoint */
1793 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1794 ((bn_ctx = BN_CTX_new()) == NULL))
1796 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1800 encoded_pt_len = *p; /* length of encoded point */
1803 if ((encoded_pt_len > n - param_len) ||
1804 (EC_POINT_oct2point(group, srvr_ecpoint,
1805 p, encoded_pt_len, bn_ctx) == 0))
1807 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1810 param_len += encoded_pt_len;
1815 /* The ECC/TLS specification does not mention
1816 * the use of DSA to sign ECParameters in the server
1817 * key exchange message. We do support RSA and ECDSA.
1820 #ifndef OPENSSL_NO_RSA
1821 else if (alg_a & SSL_aRSA)
1822 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1824 #ifndef OPENSSL_NO_ECDSA
1825 else if (alg_a & SSL_aECDSA)
1826 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1828 /* else anonymous ECDH, so no certificate or pkey. */
1829 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1830 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1832 BN_CTX_free(bn_ctx);
1834 EC_POINT_free(srvr_ecpoint);
1835 srvr_ecpoint = NULL;
1839 al=SSL_AD_UNEXPECTED_MESSAGE;
1840 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1843 #endif /* !OPENSSL_NO_ECDH */
1846 /* p points to the next byte, there are 'n' bytes left */
1848 /* if it was signed, check the signature */
1851 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1856 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1857 SSL_R_LENGTH_TOO_SHORT);
1861 sigalg = tls12_get_sigid(pkey);
1862 /* Should never happen */
1865 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1868 /* Check key type is consistent with signature */
1869 if (sigalg != (int)p[1])
1871 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE);
1872 al=SSL_AD_DECODE_ERROR;
1875 md = tls12_get_hash(p[0]);
1878 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
1882 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1892 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1893 SSL_R_LENGTH_TOO_SHORT);
1898 j=EVP_PKEY_size(pkey);
1900 /* Check signature length. If n is 0 then signature is empty */
1901 if ((i != n) || (n > j) || (n <= 0))
1903 /* wrong packet length */
1904 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1908 #ifndef OPENSSL_NO_RSA
1909 if (pkey->type == EVP_PKEY_RSA && TLS1_get_version(s) < TLS1_2_VERSION)
1916 for (num=2; num > 0; num--)
1918 EVP_MD_CTX_set_flags(&md_ctx,
1919 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1920 EVP_DigestInit_ex(&md_ctx,(num == 2)
1921 ?s->ctx->md5:s->ctx->sha1, NULL);
1922 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1923 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1924 EVP_DigestUpdate(&md_ctx,param,param_len);
1925 EVP_DigestFinal_ex(&md_ctx,q,&size);
1929 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1933 al=SSL_AD_DECRYPT_ERROR;
1934 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1940 al=SSL_AD_DECRYPT_ERROR;
1941 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1948 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1949 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1950 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1951 EVP_VerifyUpdate(&md_ctx,param,param_len);
1952 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1955 al=SSL_AD_DECRYPT_ERROR;
1956 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1963 /* aNULL, aSRP or kPSK do not need public keys */
1964 if (!(alg_a & (SSL_aNULL|SSL_aSRP)) && !(alg_k & SSL_kPSK))
1966 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1969 /* still data left over */
1972 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1976 EVP_PKEY_free(pkey);
1977 EVP_MD_CTX_cleanup(&md_ctx);
1980 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1982 EVP_PKEY_free(pkey);
1983 #ifndef OPENSSL_NO_RSA
1987 #ifndef OPENSSL_NO_DH
1991 #ifndef OPENSSL_NO_ECDH
1992 BN_CTX_free(bn_ctx);
1993 EC_POINT_free(srvr_ecpoint);
1997 EVP_MD_CTX_cleanup(&md_ctx);
2001 int ssl3_get_certificate_request(SSL *s)
2004 unsigned long n,nc,l;
2005 unsigned int llen, ctype_num,i;
2007 const unsigned char *p,*q;
2009 STACK_OF(X509_NAME) *ca_sk=NULL;
2011 n=s->method->ssl_get_message(s,
2012 SSL3_ST_CR_CERT_REQ_A,
2013 SSL3_ST_CR_CERT_REQ_B,
2018 if (!ok) return((int)n);
2020 s->s3->tmp.cert_req=0;
2022 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
2024 s->s3->tmp.reuse_message=1;
2025 /* If we get here we don't need any cached handshake records
2026 * as we wont be doing client auth.
2028 if (s->s3->handshake_buffer)
2030 if (!ssl3_digest_cached_records(s))
2036 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
2038 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2039 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
2043 /* TLS does not like anon-DH with client cert */
2044 if (s->version > SSL3_VERSION)
2046 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
2048 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2049 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
2054 p=d=(unsigned char *)s->init_msg;
2056 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
2058 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
2062 /* get the certificate types */
2064 if (ctype_num > SSL3_CT_NUMBER)
2065 ctype_num=SSL3_CT_NUMBER;
2066 for (i=0; i<ctype_num; i++)
2067 s->s3->tmp.ctype[i]= p[i];
2069 if (TLS1_get_version(s) >= TLS1_2_VERSION)
2072 /* Check we have enough room for signature algorithms and
2073 * following length value.
2075 if ((unsigned long)(p - d + llen + 2) > n)
2077 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2078 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
2081 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
2083 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2084 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
2090 /* get the CA RDNs */
2095 out=fopen("/tmp/vsign.der","w");
2096 fwrite(p,1,llen,out);
2101 if ((unsigned long)(p - d + llen) != n)
2103 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2104 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
2108 for (nc=0; nc<llen; )
2111 if ((l+nc+2) > llen)
2113 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
2114 goto cont; /* netscape bugs */
2115 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2116 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
2122 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
2124 /* If netscape tolerance is on, ignore errors */
2125 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
2129 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2130 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
2137 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2138 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
2141 if (!sk_X509_NAME_push(ca_sk,xn))
2143 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
2157 /* we should setup a certificate to return.... */
2158 s->s3->tmp.cert_req=1;
2159 s->s3->tmp.ctype_num=ctype_num;
2160 if (s->s3->tmp.ca_names != NULL)
2161 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
2162 s->s3->tmp.ca_names=ca_sk;
2167 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
2171 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
2173 return(X509_NAME_cmp(*a,*b));
2175 #ifndef OPENSSL_NO_TLSEXT
2176 int ssl3_get_new_session_ticket(SSL *s)
2178 int ok,al,ret=0, ticklen;
2180 const unsigned char *p;
2183 n=s->method->ssl_get_message(s,
2184 SSL3_ST_CR_SESSION_TICKET_A,
2185 SSL3_ST_CR_SESSION_TICKET_B,
2193 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
2195 s->s3->tmp.reuse_message=1;
2198 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
2200 al=SSL_AD_UNEXPECTED_MESSAGE;
2201 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
2206 /* need at least ticket_lifetime_hint + ticket length */
2207 al = SSL_AD_DECODE_ERROR;
2208 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2212 p=d=(unsigned char *)s->init_msg;
2213 n2l(p, s->session->tlsext_tick_lifetime_hint);
2215 /* ticket_lifetime_hint + ticket_length + ticket */
2216 if (ticklen + 6 != n)
2218 al = SSL_AD_DECODE_ERROR;
2219 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2222 if (s->session->tlsext_tick)
2224 OPENSSL_free(s->session->tlsext_tick);
2225 s->session->tlsext_ticklen = 0;
2227 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2228 if (!s->session->tlsext_tick)
2230 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2233 memcpy(s->session->tlsext_tick, p, ticklen);
2234 s->session->tlsext_ticklen = ticklen;
2235 /* There are two ways to detect a resumed ticket session.
2236 * One is to set an appropriate session ID and then the server
2237 * must return a match in ServerHello. This allows the normal
2238 * client session ID matching to work and we know much
2239 * earlier that the ticket has been accepted.
2241 * The other way is to set zero length session ID when the
2242 * ticket is presented and rely on the handshake to determine
2243 * session resumption.
2245 * We choose the former approach because this fits in with
2246 * assumptions elsewhere in OpenSSL. The session ID is set
2247 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2250 EVP_Digest(p, ticklen,
2251 s->session->session_id, &s->session->session_id_length,
2252 #ifndef OPENSSL_NO_SHA256
2253 EVP_sha256(), NULL);
2260 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2265 int ssl3_get_cert_status(SSL *s)
2268 unsigned long resplen,n;
2269 const unsigned char *p;
2271 n=s->method->ssl_get_message(s,
2272 SSL3_ST_CR_CERT_STATUS_A,
2273 SSL3_ST_CR_CERT_STATUS_B,
2274 SSL3_MT_CERTIFICATE_STATUS,
2278 if (!ok) return((int)n);
2281 /* need at least status type + length */
2282 al = SSL_AD_DECODE_ERROR;
2283 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2286 p = (unsigned char *)s->init_msg;
2287 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2289 al = SSL_AD_DECODE_ERROR;
2290 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2294 if (resplen + 4 != n)
2296 al = SSL_AD_DECODE_ERROR;
2297 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2300 if (s->tlsext_ocsp_resp)
2301 OPENSSL_free(s->tlsext_ocsp_resp);
2302 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2303 if (!s->tlsext_ocsp_resp)
2305 al = SSL_AD_INTERNAL_ERROR;
2306 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2309 s->tlsext_ocsp_resplen = resplen;
2310 if (s->ctx->tlsext_status_cb)
2313 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2316 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2317 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2322 al = SSL_AD_INTERNAL_ERROR;
2323 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2329 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2334 int ssl3_get_server_done(SSL *s)
2339 n=s->method->ssl_get_message(s,
2340 SSL3_ST_CR_SRVR_DONE_A,
2341 SSL3_ST_CR_SRVR_DONE_B,
2342 SSL3_MT_SERVER_DONE,
2343 30, /* should be very small, like 0 :-) */
2346 if (!ok) return((int)n);
2349 /* should contain no data */
2350 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2351 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2359 int ssl3_send_client_key_exchange(SSL *s)
2361 unsigned char *p,*d;
2363 unsigned long alg_k;
2364 #ifndef OPENSSL_NO_RSA
2366 EVP_PKEY *pkey=NULL;
2368 #ifndef OPENSSL_NO_KRB5
2370 #endif /* OPENSSL_NO_KRB5 */
2371 #ifndef OPENSSL_NO_ECDH
2372 EC_KEY *clnt_ecdh = NULL;
2373 const EC_POINT *srvr_ecpoint = NULL;
2374 EVP_PKEY *srvr_pub_pkey = NULL;
2375 unsigned char *encodedPoint = NULL;
2376 int encoded_pt_len = 0;
2377 BN_CTX * bn_ctx = NULL;
2380 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2382 d=(unsigned char *)s->init_buf->data;
2385 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2387 /* Fool emacs indentation */
2389 #ifndef OPENSSL_NO_RSA
2390 else if (alg_k & SSL_kRSA)
2393 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2395 if (s->session->sess_cert == NULL)
2397 /* We should always have a server certificate with SSL_kRSA. */
2398 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2402 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2403 rsa=s->session->sess_cert->peer_rsa_tmp;
2406 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2407 if ((pkey == NULL) ||
2408 (pkey->type != EVP_PKEY_RSA) ||
2409 (pkey->pkey.rsa == NULL))
2411 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2415 EVP_PKEY_free(pkey);
2418 tmp_buf[0]=s->client_version>>8;
2419 tmp_buf[1]=s->client_version&0xff;
2420 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2423 s->session->master_key_length=sizeof tmp_buf;
2426 /* Fix buf for TLS and beyond */
2427 if (s->version > SSL3_VERSION)
2429 n=RSA_public_encrypt(sizeof tmp_buf,
2430 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2432 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2433 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2437 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2441 /* Fix buf for TLS and beyond */
2442 if (s->version > SSL3_VERSION)
2448 s->session->master_key_length=
2449 s->method->ssl3_enc->generate_master_secret(s,
2450 s->session->master_key,
2451 tmp_buf,sizeof tmp_buf);
2452 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2455 #ifndef OPENSSL_NO_KRB5
2456 else if (alg_k & SSL_kKRB5)
2458 krb5_error_code krb5rc;
2459 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2460 /* krb5_data krb5_ap_req; */
2461 krb5_data *enc_ticket;
2462 krb5_data authenticator, *authp = NULL;
2463 EVP_CIPHER_CTX ciph_ctx;
2464 const EVP_CIPHER *enc = NULL;
2465 unsigned char iv[EVP_MAX_IV_LENGTH];
2466 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2467 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2468 + EVP_MAX_IV_LENGTH];
2469 int padl, outl = sizeof(epms);
2471 EVP_CIPHER_CTX_init(&ciph_ctx);
2474 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2476 #endif /* KSSL_DEBUG */
2480 if (KRB5SENDAUTH) authp = &authenticator;
2481 #endif /* KRB5SENDAUTH */
2483 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2485 enc = kssl_map_enc(kssl_ctx->enctype);
2490 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2491 if (krb5rc && kssl_err.text)
2492 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2494 #endif /* KSSL_DEBUG */
2498 ssl3_send_alert(s,SSL3_AL_FATAL,
2499 SSL_AD_HANDSHAKE_FAILURE);
2500 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2505 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2506 ** in place of RFC 2712 KerberosWrapper, as in:
2508 ** Send ticket (copy to *p, set n = length)
2509 ** n = krb5_ap_req.length;
2510 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2511 ** if (krb5_ap_req.data)
2512 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2514 ** Now using real RFC 2712 KerberosWrapper
2515 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2516 ** Note: 2712 "opaque" types are here replaced
2517 ** with a 2-byte length followed by the value.
2519 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2520 ** Where "xx xx" = length bytes. Shown here with
2521 ** optional authenticator omitted.
2524 /* KerberosWrapper.Ticket */
2525 s2n(enc_ticket->length,p);
2526 memcpy(p, enc_ticket->data, enc_ticket->length);
2527 p+= enc_ticket->length;
2528 n = enc_ticket->length + 2;
2530 /* KerberosWrapper.Authenticator */
2531 if (authp && authp->length)
2533 s2n(authp->length,p);
2534 memcpy(p, authp->data, authp->length);
2536 n+= authp->length + 2;
2544 s2n(0,p);/* null authenticator length */
2548 tmp_buf[0]=s->client_version>>8;
2549 tmp_buf[1]=s->client_version&0xff;
2550 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2553 /* 20010420 VRS. Tried it this way; failed.
2554 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2555 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2556 ** kssl_ctx->length);
2557 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2560 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2561 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2563 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2565 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2567 if (outl > (int)sizeof epms)
2569 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2572 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2574 /* KerberosWrapper.EncryptedPreMasterSecret */
2576 memcpy(p, epms, outl);
2580 s->session->master_key_length=
2581 s->method->ssl3_enc->generate_master_secret(s,
2582 s->session->master_key,
2583 tmp_buf, sizeof tmp_buf);
2585 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2586 OPENSSL_cleanse(epms, outl);
2589 #ifndef OPENSSL_NO_DH
2590 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2592 DH *dh_srvr,*dh_clnt;
2594 if (s->session->sess_cert == NULL)
2596 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2597 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2601 if (s->session->sess_cert->peer_dh_tmp != NULL)
2602 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2605 /* we get them from the cert */
2606 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2607 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2611 /* generate a new random key */
2612 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2614 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2617 if (!DH_generate_key(dh_clnt))
2619 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2624 /* use the 'p' output buffer for the DH key, but
2625 * make sure to clear it out afterwards */
2627 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2631 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2636 /* generate master key from the result */
2637 s->session->master_key_length=
2638 s->method->ssl3_enc->generate_master_secret(s,
2639 s->session->master_key,p,n);
2643 /* send off the data */
2644 n=BN_num_bytes(dh_clnt->pub_key);
2646 BN_bn2bin(dh_clnt->pub_key,p);
2651 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2655 #ifndef OPENSSL_NO_ECDH
2656 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2658 const EC_GROUP *srvr_group = NULL;
2660 int ecdh_clnt_cert = 0;
2663 if (s->session->sess_cert == NULL)
2665 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2666 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2670 /* Did we send out the client's
2671 * ECDH share for use in premaster
2672 * computation as part of client certificate?
2673 * If so, set ecdh_clnt_cert to 1.
2675 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2677 /* XXX: For now, we do not support client
2678 * authentication using ECDH certificates.
2679 * To add such support, one needs to add
2680 * code that checks for appropriate
2681 * conditions and sets ecdh_clnt_cert to 1.
2682 * For example, the cert have an ECC
2683 * key on the same curve as the server's
2684 * and the key should be authorized for
2687 * One also needs to add code in ssl3_connect
2688 * to skip sending the certificate verify
2691 * if ((s->cert->key->privatekey != NULL) &&
2692 * (s->cert->key->privatekey->type ==
2693 * EVP_PKEY_EC) && ...)
2694 * ecdh_clnt_cert = 1;
2698 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2700 tkey = s->session->sess_cert->peer_ecdh_tmp;
2704 /* Get the Server Public Key from Cert */
2705 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2706 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2707 if ((srvr_pub_pkey == NULL) ||
2708 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2709 (srvr_pub_pkey->pkey.ec == NULL))
2711 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2712 ERR_R_INTERNAL_ERROR);
2716 tkey = srvr_pub_pkey->pkey.ec;
2719 srvr_group = EC_KEY_get0_group(tkey);
2720 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2722 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2724 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2725 ERR_R_INTERNAL_ERROR);
2729 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2731 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2735 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2737 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2742 /* Reuse key info from our certificate
2743 * We only need our private key to perform
2744 * the ECDH computation.
2746 const BIGNUM *priv_key;
2747 tkey = s->cert->key->privatekey->pkey.ec;
2748 priv_key = EC_KEY_get0_private_key(tkey);
2749 if (priv_key == NULL)
2751 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2754 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2756 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2762 /* Generate a new ECDH key pair */
2763 if (!(EC_KEY_generate_key(clnt_ecdh)))
2765 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2770 /* use the 'p' output buffer for the ECDH key, but
2771 * make sure to clear it out afterwards
2774 field_size = EC_GROUP_get_degree(srvr_group);
2775 if (field_size <= 0)
2777 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2781 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2784 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2789 /* generate master key from the result */
2790 s->session->master_key_length = s->method->ssl3_enc \
2791 -> generate_master_secret(s,
2792 s->session->master_key,
2795 memset(p, 0, n); /* clean up */
2799 /* Send empty client key exch message */
2804 /* First check the size of encoding and
2805 * allocate memory accordingly.
2808 EC_POINT_point2oct(srvr_group,
2809 EC_KEY_get0_public_key(clnt_ecdh),
2810 POINT_CONVERSION_UNCOMPRESSED,
2813 encodedPoint = (unsigned char *)
2814 OPENSSL_malloc(encoded_pt_len *
2815 sizeof(unsigned char));
2816 bn_ctx = BN_CTX_new();
2817 if ((encodedPoint == NULL) ||
2820 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2824 /* Encode the public key */
2825 n = EC_POINT_point2oct(srvr_group,
2826 EC_KEY_get0_public_key(clnt_ecdh),
2827 POINT_CONVERSION_UNCOMPRESSED,
2828 encodedPoint, encoded_pt_len, bn_ctx);
2830 *p = n; /* length of encoded point */
2831 /* Encoded point will be copied here */
2833 /* copy the point */
2834 memcpy((unsigned char *)p, encodedPoint, n);
2835 /* increment n to account for length field */
2839 /* Free allocated memory */
2840 BN_CTX_free(bn_ctx);
2841 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2842 if (clnt_ecdh != NULL)
2843 EC_KEY_free(clnt_ecdh);
2844 EVP_PKEY_free(srvr_pub_pkey);
2846 #endif /* !OPENSSL_NO_ECDH */
2847 else if (alg_k & SSL_kGOST)
2849 /* GOST key exchange message creation */
2850 EVP_PKEY_CTX *pkey_ctx;
2853 unsigned int md_len;
2855 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2856 EVP_MD_CTX *ukm_hash;
2859 /* Get server sertificate PKEY and create ctx from it */
2860 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2862 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2864 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2868 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2869 /* If we have send a certificate, and certificate key
2871 * parameters match those of server certificate, use
2872 * certificate key for key exchange
2875 /* Otherwise, generate ephemeral key pair */
2877 EVP_PKEY_encrypt_init(pkey_ctx);
2878 /* Generate session key */
2879 RAND_bytes(premaster_secret,32);
2880 /* If we have client certificate, use its secret as peer key */
2881 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2882 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2883 /* If there was an error - just ignore it. Ephemeral key
2889 /* Compute shared IV and store it in algorithm-specific
2891 ukm_hash = EVP_MD_CTX_create();
2892 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2893 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2894 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2895 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2896 EVP_MD_CTX_destroy(ukm_hash);
2897 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2899 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2903 /* Make GOST keytransport blob message */
2904 /*Encapsulate it into sequence */
2905 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2907 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2908 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2915 *(p++)= msglen & 0xff;
2920 *(p++)= msglen & 0xff;
2923 memcpy(p, tmp, msglen);
2924 /* Check if pubkey from client certificate was used */
2925 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2927 /* Set flag "skip certificate verify" */
2928 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2930 EVP_PKEY_CTX_free(pkey_ctx);
2931 s->session->master_key_length=
2932 s->method->ssl3_enc->generate_master_secret(s,
2933 s->session->master_key,premaster_secret,32);
2934 EVP_PKEY_free(pub_key);
2937 #ifndef OPENSSL_NO_SRP
2938 else if (alg_k & SSL_kSRP)
2940 if (s->srp_ctx.A != NULL)
2942 /* send off the data */
2943 n=BN_num_bytes(s->srp_ctx.A);
2945 BN_bn2bin(s->srp_ctx.A,p);
2950 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2953 if (s->session->srp_username != NULL)
2954 OPENSSL_free(s->session->srp_username);
2955 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2956 if (s->session->srp_username == NULL)
2958 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2959 ERR_R_MALLOC_FAILURE);
2963 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2965 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2970 #ifndef OPENSSL_NO_PSK
2971 else if (alg_k & SSL_kPSK)
2973 /* The callback needs PSK_MAX_IDENTITY_LEN + 1 bytes
2974 * to return a \0-terminated identity. The last byte
2975 * is for us for simulating strnlen. */
2976 char identity[PSK_MAX_IDENTITY_LEN + 2];
2977 size_t identity_len;
2978 unsigned char *t = NULL;
2979 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2980 unsigned int pre_ms_len = 0, psk_len = 0;
2984 if (s->psk_client_callback == NULL)
2986 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2987 SSL_R_PSK_NO_CLIENT_CB);
2991 memset(identity, 0, sizeof(identity));
2992 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2993 identity, sizeof(identity) - 1,
2994 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2995 if (psk_len > PSK_MAX_PSK_LEN)
2997 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2998 ERR_R_INTERNAL_ERROR);
3001 else if (psk_len == 0)
3003 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3004 SSL_R_PSK_IDENTITY_NOT_FOUND);
3007 identity[PSK_MAX_IDENTITY_LEN + 1] = '\0';
3008 identity_len = strlen(identity);
3009 if (identity_len > PSK_MAX_IDENTITY_LEN)
3011 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3012 ERR_R_INTERNAL_ERROR);
3015 /* create PSK pre_master_secret */
3016 pre_ms_len = 2+psk_len+2+psk_len;
3018 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
3020 memset(t, 0, psk_len);
3024 if (s->session->psk_identity_hint != NULL)
3025 OPENSSL_free(s->session->psk_identity_hint);
3026 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
3027 if (s->ctx->psk_identity_hint != NULL &&
3028 s->session->psk_identity_hint == NULL)
3030 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3031 ERR_R_MALLOC_FAILURE);
3035 if (s->session->psk_identity != NULL)
3036 OPENSSL_free(s->session->psk_identity);
3037 s->session->psk_identity = BUF_strdup(identity);
3038 if (s->session->psk_identity == NULL)
3040 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3041 ERR_R_MALLOC_FAILURE);
3045 s->session->master_key_length =
3046 s->method->ssl3_enc->generate_master_secret(s,
3047 s->session->master_key,
3048 psk_or_pre_ms, pre_ms_len);
3049 s2n(identity_len, p);
3050 memcpy(p, identity, identity_len);
3051 n = 2 + identity_len;
3054 OPENSSL_cleanse(identity, sizeof(identity));
3055 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
3058 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
3065 ssl3_send_alert(s, SSL3_AL_FATAL,
3066 SSL_AD_HANDSHAKE_FAILURE);
3067 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
3068 ERR_R_INTERNAL_ERROR);
3072 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
3075 s->state=SSL3_ST_CW_KEY_EXCH_B;
3076 /* number of bytes to write */
3081 /* SSL3_ST_CW_KEY_EXCH_B */
3082 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3084 #ifndef OPENSSL_NO_ECDH
3085 BN_CTX_free(bn_ctx);
3086 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
3087 if (clnt_ecdh != NULL)
3088 EC_KEY_free(clnt_ecdh);
3089 EVP_PKEY_free(srvr_pub_pkey);
3094 int ssl3_send_client_verify(SSL *s)
3096 unsigned char *p,*d;
3097 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
3099 EVP_PKEY_CTX *pctx=NULL;
3105 EVP_MD_CTX_init(&mctx);
3107 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
3109 d=(unsigned char *)s->init_buf->data;
3111 pkey=s->cert->key->privatekey;
3112 /* Create context from key and test if sha1 is allowed as digest */
3113 pctx = EVP_PKEY_CTX_new(pkey,NULL);
3114 EVP_PKEY_sign_init(pctx);
3115 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
3117 if (TLS1_get_version(s) < TLS1_2_VERSION)
3118 s->method->ssl3_enc->cert_verify_mac(s,
3120 &(data[MD5_DIGEST_LENGTH]));
3126 /* For TLS v1.2 send signature algorithm and signature
3127 * using agreed digest and cached handshake records.
3129 if (TLS1_get_version(s) >= TLS1_2_VERSION)
3133 const EVP_MD *md = s->cert->key->digest;
3134 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
3136 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
3138 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3139 ERR_R_INTERNAL_ERROR);
3144 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
3147 if (!EVP_SignInit_ex(&mctx, md, NULL)
3148 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
3149 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
3151 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3157 if (!ssl3_digest_cached_records(s))
3161 #ifndef OPENSSL_NO_RSA
3162 if (pkey->type == EVP_PKEY_RSA)
3164 s->method->ssl3_enc->cert_verify_mac(s,
3167 if (RSA_sign(NID_md5_sha1, data,
3168 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
3169 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
3171 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
3179 #ifndef OPENSSL_NO_DSA
3180 if (pkey->type == EVP_PKEY_DSA)
3182 if (!DSA_sign(pkey->save_type,
3183 &(data[MD5_DIGEST_LENGTH]),
3184 SHA_DIGEST_LENGTH,&(p[2]),
3185 (unsigned int *)&j,pkey->pkey.dsa))
3187 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
3195 #ifndef OPENSSL_NO_ECDSA
3196 if (pkey->type == EVP_PKEY_EC)
3198 if (!ECDSA_sign(pkey->save_type,
3199 &(data[MD5_DIGEST_LENGTH]),
3200 SHA_DIGEST_LENGTH,&(p[2]),
3201 (unsigned int *)&j,pkey->pkey.ec))
3203 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3212 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
3214 unsigned char signbuf[64];
3217 s->method->ssl3_enc->cert_verify_mac(s,
3218 NID_id_GostR3411_94,
3220 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
3221 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3222 ERR_R_INTERNAL_ERROR);
3225 for (i=63,j=0; i>=0; j++, i--) {
3233 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
3236 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
3239 s->state=SSL3_ST_CW_CERT_VRFY_B;
3240 s->init_num=(int)n+4;
3243 EVP_MD_CTX_cleanup(&mctx);
3244 EVP_PKEY_CTX_free(pctx);
3245 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3247 EVP_MD_CTX_cleanup(&mctx);
3248 EVP_PKEY_CTX_free(pctx);
3252 int ssl3_send_client_certificate(SSL *s)
3255 EVP_PKEY *pkey=NULL;
3259 if (s->state == SSL3_ST_CW_CERT_A)
3261 if ((s->cert == NULL) ||
3262 (s->cert->key->x509 == NULL) ||
3263 (s->cert->key->privatekey == NULL))
3264 s->state=SSL3_ST_CW_CERT_B;
3266 s->state=SSL3_ST_CW_CERT_C;
3269 /* We need to get a client cert */
3270 if (s->state == SSL3_ST_CW_CERT_B)
3272 /* If we get an error, we need to
3273 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3274 * We then get retied later */
3276 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3279 s->rwstate=SSL_X509_LOOKUP;
3282 s->rwstate=SSL_NOTHING;
3283 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3285 s->state=SSL3_ST_CW_CERT_B;
3286 if ( !SSL_use_certificate(s,x509) ||
3287 !SSL_use_PrivateKey(s,pkey))
3293 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3296 if (x509 != NULL) X509_free(x509);
3297 if (pkey != NULL) EVP_PKEY_free(pkey);
3300 if (s->version == SSL3_VERSION)
3302 s->s3->tmp.cert_req=0;
3303 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3308 s->s3->tmp.cert_req=2;
3312 /* Ok, we have a cert */
3313 s->state=SSL3_ST_CW_CERT_C;
3316 if (s->state == SSL3_ST_CW_CERT_C)
3318 s->state=SSL3_ST_CW_CERT_D;
3319 l=ssl3_output_cert_chain(s,
3320 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
3324 /* SSL3_ST_CW_CERT_D */
3325 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3328 #define has_bits(i,m) (((i)&(m)) == (m))
3330 int ssl3_check_cert_and_algorithm(SSL *s)
3334 EVP_PKEY *pkey=NULL;
3336 #ifndef OPENSSL_NO_RSA
3339 #ifndef OPENSSL_NO_DH
3343 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3344 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3346 /* we don't have a certificate */
3347 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3350 sc=s->session->sess_cert;
3353 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3357 #ifndef OPENSSL_NO_RSA
3358 rsa=s->session->sess_cert->peer_rsa_tmp;
3360 #ifndef OPENSSL_NO_DH
3361 dh=s->session->sess_cert->peer_dh_tmp;
3364 /* This is the passed certificate */
3366 idx=sc->peer_cert_type;
3367 #ifndef OPENSSL_NO_ECDH
3368 if (idx == SSL_PKEY_ECC)
3370 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3372 { /* check failed */
3373 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3382 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3383 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3384 EVP_PKEY_free(pkey);
3387 /* Check that we have a certificate if we require one */
3388 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3390 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3393 #ifndef OPENSSL_NO_DSA
3394 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3396 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3400 #ifndef OPENSSL_NO_RSA
3401 if ((alg_k & SSL_kRSA) &&
3402 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3404 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3408 #ifndef OPENSSL_NO_DH
3409 if ((alg_k & SSL_kEDH) &&
3410 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3412 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3415 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3417 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3420 #ifndef OPENSSL_NO_DSA
3421 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3423 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3429 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3431 #ifndef OPENSSL_NO_RSA
3432 if (alg_k & SSL_kRSA)
3435 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3437 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3443 #ifndef OPENSSL_NO_DH
3444 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3447 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3449 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3456 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3462 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3467 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
3468 int ssl3_send_next_proto(SSL *s)
3470 unsigned int len, padding_len;
3473 if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
3475 len = s->next_proto_negotiated_len;
3476 padding_len = 32 - ((len + 2) % 32);
3477 d = (unsigned char *)s->init_buf->data;
3479 memcpy(d + 5, s->next_proto_negotiated, len);
3480 d[5 + len] = padding_len;
3481 memset(d + 6 + len, 0, padding_len);
3482 *(d++)=SSL3_MT_NEXT_PROTO;
3483 l2n3(2 + len + padding_len, d);
3484 s->state = SSL3_ST_CW_NEXT_PROTO_B;
3485 s->init_num = 4 + 2 + len + padding_len;
3489 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3491 #endif /* !OPENSSL_NO_TLSEXT && !OPENSSL_NO_NEXTPROTONEG */
3493 /* Check to see if handshake is full or resumed. Usually this is just a
3494 * case of checking to see if a cache hit has occurred. In the case of
3495 * session tickets we have to check the next message to be sure.
3498 #ifndef OPENSSL_NO_TLSEXT
3499 int ssl3_check_finished(SSL *s)
3503 /* If we have no ticket it cannot be a resumed session. */
3504 if (!s->session->tlsext_tick)
3506 /* this function is called when we really expect a Certificate
3507 * message, so permit appropriate message length */
3508 n=s->method->ssl_get_message(s,
3514 if (!ok) return((int)n);
3515 s->s3->tmp.reuse_message = 1;
3516 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3517 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3524 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3527 #ifndef OPENSSL_NO_ENGINE
3528 if (s->ctx->client_cert_engine)
3530 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3531 SSL_get_client_CA_list(s),
3532 px509, ppkey, NULL, NULL, NULL);
3537 if (s->ctx->client_cert_cb)
3538 i = s->ctx->client_cert_cb(s,px509,ppkey);