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;
309 s->state=SSL3_ST_CR_CERT_A;
313 case SSL3_ST_CR_CERT_A:
314 case SSL3_ST_CR_CERT_B:
315 #ifndef OPENSSL_NO_TLSEXT
316 ret=ssl3_check_finished(s);
317 if (ret <= 0) goto end;
321 if (s->tlsext_ticket_expected)
322 s->state=SSL3_ST_CR_SESSION_TICKET_A;
324 s->state=SSL3_ST_CR_FINISHED_A;
329 /* Check if it is anon DH/ECDH */
331 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
332 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
334 ret=ssl3_get_server_certificate(s);
335 if (ret <= 0) goto end;
336 #ifndef OPENSSL_NO_TLSEXT
337 if (s->tlsext_status_expected)
338 s->state=SSL3_ST_CR_CERT_STATUS_A;
340 s->state=SSL3_ST_CR_KEY_EXCH_A;
345 s->state=SSL3_ST_CR_KEY_EXCH_A;
352 s->state=SSL3_ST_CR_KEY_EXCH_A;
357 case SSL3_ST_CR_KEY_EXCH_A:
358 case SSL3_ST_CR_KEY_EXCH_B:
359 ret=ssl3_get_key_exchange(s);
360 if (ret <= 0) goto end;
361 s->state=SSL3_ST_CR_CERT_REQ_A;
364 /* at this point we check that we have the
365 * required stuff from the server */
366 if (!ssl3_check_cert_and_algorithm(s))
373 case SSL3_ST_CR_CERT_REQ_A:
374 case SSL3_ST_CR_CERT_REQ_B:
375 ret=ssl3_get_certificate_request(s);
376 if (ret <= 0) goto end;
377 s->state=SSL3_ST_CR_SRVR_DONE_A;
381 case SSL3_ST_CR_SRVR_DONE_A:
382 case SSL3_ST_CR_SRVR_DONE_B:
383 ret=ssl3_get_server_done(s);
384 if (ret <= 0) goto end;
385 #ifndef OPENSSL_NO_SRP
386 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP)
388 if ((ret = SRP_Calc_A_param(s))<=0)
390 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SRP_A_CALC);
391 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
396 if (s->s3->tmp.cert_req)
397 s->state=SSL3_ST_CW_CERT_A;
399 s->state=SSL3_ST_CW_KEY_EXCH_A;
404 case SSL3_ST_CW_CERT_A:
405 case SSL3_ST_CW_CERT_B:
406 case SSL3_ST_CW_CERT_C:
407 case SSL3_ST_CW_CERT_D:
408 ret=ssl3_send_client_certificate(s);
409 if (ret <= 0) goto end;
410 s->state=SSL3_ST_CW_KEY_EXCH_A;
414 case SSL3_ST_CW_KEY_EXCH_A:
415 case SSL3_ST_CW_KEY_EXCH_B:
416 ret=ssl3_send_client_key_exchange(s);
417 if (ret <= 0) goto end;
418 /* EAY EAY EAY need to check for DH fix cert
420 /* For TLS, cert_req is set to 2, so a cert chain
421 * of nothing is sent, but no verify packet is sent */
422 /* XXX: For now, we do not support client
423 * authentication in ECDH cipher suites with
424 * ECDH (rather than ECDSA) certificates.
425 * We need to skip the certificate verify
426 * message when client's ECDH public key is sent
427 * inside the client certificate.
429 if (s->s3->tmp.cert_req == 1)
431 s->state=SSL3_ST_CW_CERT_VRFY_A;
435 s->state=SSL3_ST_CW_CHANGE_A;
436 s->s3->change_cipher_spec=0;
438 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
440 s->state=SSL3_ST_CW_CHANGE_A;
441 s->s3->change_cipher_spec=0;
447 case SSL3_ST_CW_CERT_VRFY_A:
448 case SSL3_ST_CW_CERT_VRFY_B:
449 ret=ssl3_send_client_verify(s);
450 if (ret <= 0) goto end;
451 s->state=SSL3_ST_CW_CHANGE_A;
453 s->s3->change_cipher_spec=0;
456 case SSL3_ST_CW_CHANGE_A:
457 case SSL3_ST_CW_CHANGE_B:
458 ret=ssl3_send_change_cipher_spec(s,
459 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
460 if (ret <= 0) goto end;
462 #if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
463 s->state=SSL3_ST_CW_FINISHED_A;
465 if (s->s3->next_proto_neg_seen)
466 s->state=SSL3_ST_CW_NEXT_PROTO_A;
468 s->state=SSL3_ST_CW_FINISHED_A;
472 s->session->cipher=s->s3->tmp.new_cipher;
473 #ifdef OPENSSL_NO_COMP
474 s->session->compress_meth=0;
476 if (s->s3->tmp.new_compression == NULL)
477 s->session->compress_meth=0;
479 s->session->compress_meth=
480 s->s3->tmp.new_compression->id;
482 if (!s->method->ssl3_enc->setup_key_block(s))
488 if (!s->method->ssl3_enc->change_cipher_state(s,
489 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
497 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
498 case SSL3_ST_CW_NEXT_PROTO_A:
499 case SSL3_ST_CW_NEXT_PROTO_B:
500 ret=ssl3_send_next_proto(s);
501 if (ret <= 0) goto end;
502 s->state=SSL3_ST_CW_FINISHED_A;
506 case SSL3_ST_CW_FINISHED_A:
507 case SSL3_ST_CW_FINISHED_B:
508 ret=ssl3_send_finished(s,
509 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
510 s->method->ssl3_enc->client_finished_label,
511 s->method->ssl3_enc->client_finished_label_len);
512 if (ret <= 0) goto end;
513 s->state=SSL3_ST_CW_FLUSH;
516 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
519 s->s3->tmp.next_state=SSL_ST_OK;
520 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
523 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
524 s->s3->delay_buf_pop_ret=0;
529 #ifndef OPENSSL_NO_TLSEXT
530 /* Allow NewSessionTicket if ticket expected */
531 if (s->tlsext_ticket_expected)
532 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
536 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
541 #ifndef OPENSSL_NO_TLSEXT
542 case SSL3_ST_CR_SESSION_TICKET_A:
543 case SSL3_ST_CR_SESSION_TICKET_B:
544 ret=ssl3_get_new_session_ticket(s);
545 if (ret <= 0) goto end;
546 s->state=SSL3_ST_CR_FINISHED_A;
550 case SSL3_ST_CR_CERT_STATUS_A:
551 case SSL3_ST_CR_CERT_STATUS_B:
552 ret=ssl3_get_cert_status(s);
553 if (ret <= 0) goto end;
554 s->state=SSL3_ST_CR_KEY_EXCH_A;
559 case SSL3_ST_CR_FINISHED_A:
560 case SSL3_ST_CR_FINISHED_B:
562 s->s3->flags |= SSL3_FLAGS_CCS_OK;
563 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
564 SSL3_ST_CR_FINISHED_B);
565 if (ret <= 0) goto end;
568 s->state=SSL3_ST_CW_CHANGE_A;
574 case SSL3_ST_CW_FLUSH:
575 s->rwstate=SSL_WRITING;
576 if (BIO_flush(s->wbio) <= 0)
581 s->rwstate=SSL_NOTHING;
582 s->state=s->s3->tmp.next_state;
586 /* clean a few things up */
587 ssl3_cleanup_key_block(s);
589 if (s->init_buf != NULL)
591 BUF_MEM_free(s->init_buf);
595 /* If we are not 'joining' the last two packets,
596 * remove the buffering now */
597 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
598 ssl_free_wbio_buffer(s);
599 /* else do it later in ssl3_write */
605 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
606 if (s->hit) s->ctx->stats.sess_hit++;
610 s->handshake_func=ssl3_connect;
611 s->ctx->stats.sess_connect_good++;
613 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
619 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
625 /* did we do anything */
626 if (!s->s3->tmp.reuse_message && !skip)
630 if ((ret=BIO_flush(s->wbio)) <= 0)
634 if ((cb != NULL) && (s->state != state))
638 cb(s,SSL_CB_CONNECT_LOOP,1);
649 cb(s,SSL_CB_CONNECT_EXIT,ret);
654 int ssl3_client_hello(SSL *s)
660 #ifndef OPENSSL_NO_COMP
665 buf=(unsigned char *)s->init_buf->data;
666 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
668 SSL_SESSION *sess = s->session;
669 if ((sess == NULL) ||
670 (sess->ssl_version != s->version) ||
671 #ifdef OPENSSL_NO_TLSEXT
672 !sess->session_id_length ||
674 (!sess->session_id_length && !sess->tlsext_tick) ||
676 (sess->not_resumable))
678 if (!ssl_get_new_session(s,0))
681 /* else use the pre-loaded session */
683 p=s->s3->client_random;
685 if (ssl_fill_hello_random(s, 0, p, SSL3_RANDOM_SIZE) <= 0)
688 /* Do the message type and length last */
691 /* version indicates the negotiated version: for example from
692 * an SSLv2/v3 compatible client hello). The client_version
693 * field is the maximum version we permit and it is also
694 * used in RSA encrypted premaster secrets. Some servers can
695 * choke if we initially report a higher version then
696 * renegotiate to a lower one in the premaster secret. This
697 * didn't happen with TLS 1.0 as most servers supported it
698 * but it can with TLS 1.1 or later if the server only supports
701 * Possible scenario with previous logic:
702 * 1. Client hello indicates TLS 1.2
703 * 2. Server hello says TLS 1.0
704 * 3. RSA encrypted premaster secret uses 1.2.
705 * 4. Handhaked proceeds using TLS 1.0.
706 * 5. Server sends hello request to renegotiate.
707 * 6. Client hello indicates TLS v1.0 as we now
708 * know that is maximum server supports.
709 * 7. Server chokes on RSA encrypted premaster secret
710 * containing version 1.0.
712 * For interoperability it should be OK to always use the
713 * maximum version we support in client hello and then rely
714 * on the checking of version to ensure the servers isn't
715 * being inconsistent: for example initially negotiating with
716 * TLS 1.0 and renegotiating with TLS 1.2. We do this by using
717 * client_version in client hello and not resetting it to
718 * the negotiated version.
721 *(p++)=s->version>>8;
722 *(p++)=s->version&0xff;
723 s->client_version=s->version;
725 *(p++)=s->client_version>>8;
726 *(p++)=s->client_version&0xff;
730 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
737 i=s->session->session_id_length;
741 if (i > (int)sizeof(s->session->session_id))
743 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
746 memcpy(p,s->session->session_id,i);
750 /* Ciphers supported */
751 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
754 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
757 #ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH
758 /* Some servers hang if client hello > 256 bytes
759 * as hack workaround chop number of supported ciphers
760 * to keep it well below this if we use TLS v1.2
762 if (TLS1_get_version(s) >= TLS1_2_VERSION
763 && i > OPENSSL_MAX_TLS1_2_CIPHER_LENGTH)
764 i = OPENSSL_MAX_TLS1_2_CIPHER_LENGTH & ~1;
770 #ifdef OPENSSL_NO_COMP
774 if ((s->options & SSL_OP_NO_COMPRESSION)
775 || !s->ctx->comp_methods)
778 j=sk_SSL_COMP_num(s->ctx->comp_methods);
782 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
786 *(p++)=0; /* Add the NULL method */
788 #ifndef OPENSSL_NO_TLSEXT
790 if (ssl_prepare_clienthello_tlsext(s) <= 0)
792 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
795 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
797 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
804 *(d++)=SSL3_MT_CLIENT_HELLO;
807 s->state=SSL3_ST_CW_CLNT_HELLO_B;
808 /* number of bytes to write */
813 /* SSL3_ST_CW_CLNT_HELLO_B */
814 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
819 int ssl3_get_server_hello(SSL *s)
821 STACK_OF(SSL_CIPHER) *sk;
827 #ifndef OPENSSL_NO_COMP
831 n=s->method->ssl_get_message(s,
832 SSL3_ST_CR_SRVR_HELLO_A,
833 SSL3_ST_CR_SRVR_HELLO_B,
838 if (!ok) return((int)n);
840 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
842 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
844 if ( s->d1->send_cookie == 0)
846 s->s3->tmp.reuse_message = 1;
849 else /* already sent a cookie */
851 al=SSL_AD_UNEXPECTED_MESSAGE;
852 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
858 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
860 al=SSL_AD_UNEXPECTED_MESSAGE;
861 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
865 d=p=(unsigned char *)s->init_msg;
867 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
869 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
870 s->version=(s->version&0xff00)|p[1];
871 al=SSL_AD_PROTOCOL_VERSION;
876 /* load the server hello data */
877 /* load the server random */
878 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
881 /* get the session-id */
884 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
886 al=SSL_AD_ILLEGAL_PARAMETER;
887 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
891 #ifndef OPENSSL_NO_TLSEXT
892 /* check if we want to resume the session based on external pre-shared secret */
893 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
895 SSL_CIPHER *pref_cipher=NULL;
896 s->session->master_key_length=sizeof(s->session->master_key);
897 if (s->tls_session_secret_cb(s, s->session->master_key,
898 &s->session->master_key_length,
900 s->tls_session_secret_cb_arg))
902 s->session->cipher = pref_cipher ?
903 pref_cipher : ssl_get_cipher_by_char(s, p+j);
906 #endif /* OPENSSL_NO_TLSEXT */
908 if (j != 0 && j == s->session->session_id_length
909 && memcmp(p,s->session->session_id,j) == 0)
911 if(s->sid_ctx_length != s->session->sid_ctx_length
912 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
914 /* actually a client application bug */
915 al=SSL_AD_ILLEGAL_PARAMETER;
916 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
919 s->s3->flags |= SSL3_FLAGS_CCS_OK;
922 else /* a miss or crap from the other end */
924 /* If we were trying for session-id reuse, make a new
925 * SSL_SESSION so we don't stuff up other people */
927 if (s->session->session_id_length > 0)
929 if (!ssl_get_new_session(s,0))
931 al=SSL_AD_INTERNAL_ERROR;
935 s->session->session_id_length=j;
936 memcpy(s->session->session_id,p,j); /* j could be 0 */
939 c=ssl_get_cipher_by_char(s,p);
943 al=SSL_AD_ILLEGAL_PARAMETER;
944 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
947 /* TLS v1.2 only ciphersuites require v1.2 or later */
948 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
949 (TLS1_get_version(s) < TLS1_2_VERSION))
951 al=SSL_AD_ILLEGAL_PARAMETER;
952 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
955 p+=ssl_put_cipher_by_char(s,NULL,NULL);
957 sk=ssl_get_ciphers_by_id(s);
958 i=sk_SSL_CIPHER_find(sk,c);
961 /* we did not say we would use this cipher */
962 al=SSL_AD_ILLEGAL_PARAMETER;
963 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
967 /* Depending on the session caching (internal/external), the cipher
968 and/or cipher_id values may not be set. Make sure that
969 cipher_id is set and use it for comparison. */
970 if (s->session->cipher)
971 s->session->cipher_id = s->session->cipher->id;
972 if (s->hit && (s->session->cipher_id != c->id))
974 /* Workaround is now obsolete */
977 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
980 al=SSL_AD_ILLEGAL_PARAMETER;
981 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
985 s->s3->tmp.new_cipher=c;
986 /* Don't digest cached records if TLS v1.2: we may need them for
987 * client authentication.
989 if (TLS1_get_version(s) < TLS1_2_VERSION && !ssl3_digest_cached_records(s))
991 al = SSL_AD_INTERNAL_ERROR;
994 /* lets get the compression algorithm */
996 #ifdef OPENSSL_NO_COMP
999 al=SSL_AD_ILLEGAL_PARAMETER;
1000 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
1003 /* If compression is disabled we'd better not try to resume a session
1004 * using compression.
1006 if (s->session->compress_meth != 0)
1008 al=SSL_AD_INTERNAL_ERROR;
1009 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
1014 if (s->hit && j != s->session->compress_meth)
1016 al=SSL_AD_ILLEGAL_PARAMETER;
1017 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
1022 else if (s->options & SSL_OP_NO_COMPRESSION)
1024 al=SSL_AD_ILLEGAL_PARAMETER;
1025 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
1029 comp=ssl3_comp_find(s->ctx->comp_methods,j);
1031 if ((j != 0) && (comp == NULL))
1033 al=SSL_AD_ILLEGAL_PARAMETER;
1034 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
1039 s->s3->tmp.new_compression=comp;
1043 #ifndef OPENSSL_NO_TLSEXT
1045 if (s->version >= SSL3_VERSION)
1047 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
1049 /* 'al' set by ssl_parse_serverhello_tlsext */
1050 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
1053 if (ssl_check_serverhello_tlsext(s) <= 0)
1055 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
1063 /* wrong packet length */
1064 al=SSL_AD_DECODE_ERROR;
1065 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
1071 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1076 int ssl3_get_server_certificate(SSL *s)
1078 int al,i,ok,ret= -1;
1079 unsigned long n,nc,llen,l;
1081 const unsigned char *q,*p;
1083 STACK_OF(X509) *sk=NULL;
1085 EVP_PKEY *pkey=NULL;
1086 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1088 n=s->method->ssl_get_message(s,
1095 if (!ok) return((int)n);
1097 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1098 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1099 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1101 s->s3->tmp.reuse_message=1;
1105 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1107 al=SSL_AD_UNEXPECTED_MESSAGE;
1108 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1111 p=d=(unsigned char *)s->init_msg;
1113 if ((sk=sk_X509_new_null()) == NULL)
1115 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1122 al=SSL_AD_DECODE_ERROR;
1123 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1126 for (nc=0; nc<llen; )
1129 if ((l+nc+3) > llen)
1131 al=SSL_AD_DECODE_ERROR;
1132 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1137 x=d2i_X509(NULL,&q,l);
1140 al=SSL_AD_BAD_CERTIFICATE;
1141 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1146 al=SSL_AD_DECODE_ERROR;
1147 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1150 if (!sk_X509_push(sk,x))
1152 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1160 i=ssl_verify_cert_chain(s,sk);
1161 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1162 #ifndef OPENSSL_NO_KRB5
1163 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1164 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1165 #endif /* OPENSSL_NO_KRB5 */
1168 al=ssl_verify_alarm_type(s->verify_result);
1169 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1172 ERR_clear_error(); /* but we keep s->verify_result */
1174 sc=ssl_sess_cert_new();
1175 if (sc == NULL) goto err;
1177 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1178 s->session->sess_cert=sc;
1181 /* Inconsistency alert: cert_chain does include the peer's
1182 * certificate, which we don't include in s3_srvr.c */
1183 x=sk_X509_value(sk,0);
1185 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1187 pkey=X509_get_pubkey(x);
1189 /* VRS: allow null cert if auth == KRB5 */
1190 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1191 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1195 printf("pkey,x = %p, %p\n", pkey,x);
1196 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1197 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1198 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1199 #endif /* KSSL_DEBUG */
1201 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1205 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1206 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1210 i=ssl_cert_type(x,pkey);
1211 if (need_cert && i < 0)
1215 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1216 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1222 sc->peer_cert_type=i;
1223 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1224 /* Why would the following ever happen?
1225 * We just created sc a couple of lines ago. */
1226 if (sc->peer_pkeys[i].x509 != NULL)
1227 X509_free(sc->peer_pkeys[i].x509);
1228 sc->peer_pkeys[i].x509=x;
1229 sc->peer_key= &(sc->peer_pkeys[i]);
1231 if (s->session->peer != NULL)
1232 X509_free(s->session->peer);
1233 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1238 sc->peer_cert_type=i;
1241 if (s->session->peer != NULL)
1242 X509_free(s->session->peer);
1243 s->session->peer=NULL;
1245 s->session->verify_result = s->verify_result;
1253 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1256 EVP_PKEY_free(pkey);
1258 sk_X509_pop_free(sk,X509_free);
1262 int ssl3_get_key_exchange(SSL *s)
1264 #ifndef OPENSSL_NO_RSA
1265 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1268 unsigned char *param,*p;
1269 int al,i,j,param_len,ok;
1271 EVP_PKEY *pkey=NULL;
1272 const EVP_MD *md = NULL;
1273 #ifndef OPENSSL_NO_RSA
1276 #ifndef OPENSSL_NO_DH
1279 #ifndef OPENSSL_NO_ECDH
1280 EC_KEY *ecdh = NULL;
1281 BN_CTX *bn_ctx = NULL;
1282 EC_POINT *srvr_ecpoint = NULL;
1284 int encoded_pt_len = 0;
1287 /* use same message size as in ssl3_get_certificate_request()
1288 * as ServerKeyExchange message may be skipped */
1289 n=s->method->ssl_get_message(s,
1290 SSL3_ST_CR_KEY_EXCH_A,
1291 SSL3_ST_CR_KEY_EXCH_B,
1295 if (!ok) return((int)n);
1297 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1299 #ifndef OPENSSL_NO_PSK
1300 /* In plain PSK ciphersuite, ServerKeyExchange can be
1301 omitted if no identity hint is sent. Set
1302 session->sess_cert anyway to avoid problems
1304 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1306 s->session->sess_cert=ssl_sess_cert_new();
1307 if (s->ctx->psk_identity_hint)
1308 OPENSSL_free(s->ctx->psk_identity_hint);
1309 s->ctx->psk_identity_hint = NULL;
1312 s->s3->tmp.reuse_message=1;
1316 param=p=(unsigned char *)s->init_msg;
1317 if (s->session->sess_cert != NULL)
1319 #ifndef OPENSSL_NO_RSA
1320 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1322 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1323 s->session->sess_cert->peer_rsa_tmp=NULL;
1326 #ifndef OPENSSL_NO_DH
1327 if (s->session->sess_cert->peer_dh_tmp)
1329 DH_free(s->session->sess_cert->peer_dh_tmp);
1330 s->session->sess_cert->peer_dh_tmp=NULL;
1333 #ifndef OPENSSL_NO_ECDH
1334 if (s->session->sess_cert->peer_ecdh_tmp)
1336 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1337 s->session->sess_cert->peer_ecdh_tmp=NULL;
1343 s->session->sess_cert=ssl_sess_cert_new();
1347 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1348 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1349 EVP_MD_CTX_init(&md_ctx);
1351 #ifndef OPENSSL_NO_PSK
1352 if (alg_k & SSL_kPSK)
1354 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1356 al=SSL_AD_HANDSHAKE_FAILURE;
1359 /* Store PSK identity hint for later use, hint is used
1360 * in ssl3_send_client_key_exchange. Assume that the
1361 * maximum length of a PSK identity hint can be as
1362 * long as the maximum length of a PSK identity. */
1363 if (i > PSK_MAX_IDENTITY_LEN)
1365 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1366 SSL_R_DATA_LENGTH_TOO_LONG);
1371 al=SSL_AD_DECODE_ERROR;
1372 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1373 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1376 /* If received PSK identity hint contains NULL
1377 * characters, the hint is truncated from the first
1378 * NULL. p may not be ending with NULL, so create a
1379 * NULL-terminated string. */
1380 memcpy(tmp_id_hint, p, i);
1381 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1382 if (s->ctx->psk_identity_hint != NULL)
1383 OPENSSL_free(s->ctx->psk_identity_hint);
1384 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1385 if (s->ctx->psk_identity_hint == NULL)
1387 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1395 #endif /* !OPENSSL_NO_PSK */
1396 #ifndef OPENSSL_NO_SRP
1397 if (alg_k & SSL_kSRP)
1403 al=SSL_AD_DECODE_ERROR;
1404 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1407 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1409 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1418 al=SSL_AD_DECODE_ERROR;
1419 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1422 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1424 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1429 i = (unsigned int)(p[0]);
1434 al=SSL_AD_DECODE_ERROR;
1435 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1438 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1440 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1449 al=SSL_AD_DECODE_ERROR;
1450 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1453 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1455 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1461 /* We must check if there is a certificate */
1462 #ifndef OPENSSL_NO_RSA
1463 if (alg_a & SSL_aRSA)
1464 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1469 #ifndef OPENSSL_NO_DSA
1470 else if (alg_a & SSL_aDSS)
1471 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1475 #endif /* !OPENSSL_NO_SRP */
1476 #ifndef OPENSSL_NO_RSA
1477 if (alg_k & SSL_kRSA)
1479 if ((rsa=RSA_new()) == NULL)
1481 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1488 al=SSL_AD_DECODE_ERROR;
1489 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1492 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1494 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1503 al=SSL_AD_DECODE_ERROR;
1504 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1507 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1509 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1515 /* this should be because we are using an export cipher */
1516 if (alg_a & SSL_aRSA)
1517 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1520 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1523 s->session->sess_cert->peer_rsa_tmp=rsa;
1526 #else /* OPENSSL_NO_RSA */
1530 #ifndef OPENSSL_NO_DH
1531 else if (alg_k & SSL_kEDH)
1533 if ((dh=DH_new()) == NULL)
1535 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1542 al=SSL_AD_DECODE_ERROR;
1543 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1546 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1548 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1557 al=SSL_AD_DECODE_ERROR;
1558 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1561 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1563 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1572 al=SSL_AD_DECODE_ERROR;
1573 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1576 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1578 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1584 #ifndef OPENSSL_NO_RSA
1585 if (alg_a & SSL_aRSA)
1586 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1591 #ifndef OPENSSL_NO_DSA
1592 else if (alg_a & SSL_aDSS)
1593 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1595 /* else anonymous DH, so no certificate or pkey. */
1597 s->session->sess_cert->peer_dh_tmp=dh;
1600 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1602 al=SSL_AD_ILLEGAL_PARAMETER;
1603 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1606 #endif /* !OPENSSL_NO_DH */
1608 #ifndef OPENSSL_NO_ECDH
1609 else if (alg_k & SSL_kEECDH)
1612 const EC_GROUP *group;
1614 if ((ecdh=EC_KEY_new()) == NULL)
1616 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1620 /* Extract elliptic curve parameters and the
1621 * server's ephemeral ECDH public key.
1622 * Keep accumulating lengths of various components in
1623 * param_len and make sure it never exceeds n.
1626 /* XXX: For now we only support named (not generic) curves
1627 * and the ECParameters in this case is just three bytes.
1630 if ((param_len > n) ||
1631 (*p != NAMED_CURVE_TYPE) ||
1632 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1634 al=SSL_AD_INTERNAL_ERROR;
1635 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1639 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1642 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1645 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1647 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1650 EC_GROUP_free(ngroup);
1652 group = EC_KEY_get0_group(ecdh);
1654 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1655 (EC_GROUP_get_degree(group) > 163))
1657 al=SSL_AD_EXPORT_RESTRICTION;
1658 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1664 /* Next, get the encoded ECPoint */
1665 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1666 ((bn_ctx = BN_CTX_new()) == NULL))
1668 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1672 encoded_pt_len = *p; /* length of encoded point */
1674 param_len += (1 + encoded_pt_len);
1675 if ((param_len > n) ||
1676 (EC_POINT_oct2point(group, srvr_ecpoint,
1677 p, encoded_pt_len, bn_ctx) == 0))
1679 al=SSL_AD_DECODE_ERROR;
1680 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1687 /* The ECC/TLS specification does not mention
1688 * the use of DSA to sign ECParameters in the server
1689 * key exchange message. We do support RSA and ECDSA.
1692 #ifndef OPENSSL_NO_RSA
1693 else if (alg_a & SSL_aRSA)
1694 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1696 #ifndef OPENSSL_NO_ECDSA
1697 else if (alg_a & SSL_aECDSA)
1698 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1700 /* else anonymous ECDH, so no certificate or pkey. */
1701 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1702 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1704 BN_CTX_free(bn_ctx);
1706 EC_POINT_free(srvr_ecpoint);
1707 srvr_ecpoint = NULL;
1711 al=SSL_AD_UNEXPECTED_MESSAGE;
1712 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1715 #endif /* !OPENSSL_NO_ECDH */
1718 /* p points to the next byte, there are 'n' bytes left */
1720 /* if it was signed, check the signature */
1723 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1725 int sigalg = tls12_get_sigid(pkey);
1726 /* Should never happen */
1729 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1732 /* Check key type is consistent with signature */
1733 if (sigalg != (int)p[1])
1735 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE);
1736 al=SSL_AD_DECODE_ERROR;
1739 md = tls12_get_hash(p[0]);
1742 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
1743 al=SSL_AD_DECODE_ERROR;
1747 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1757 j=EVP_PKEY_size(pkey);
1759 if ((i != n) || (n > j) || (n <= 0))
1761 /* wrong packet length */
1762 al=SSL_AD_DECODE_ERROR;
1763 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1767 #ifndef OPENSSL_NO_RSA
1768 if (pkey->type == EVP_PKEY_RSA && TLS1_get_version(s) < TLS1_2_VERSION)
1774 for (num=2; num > 0; num--)
1776 EVP_MD_CTX_set_flags(&md_ctx,
1777 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1778 EVP_DigestInit_ex(&md_ctx,(num == 2)
1779 ?s->ctx->md5:s->ctx->sha1, NULL);
1780 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1781 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1782 EVP_DigestUpdate(&md_ctx,param,param_len);
1783 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1787 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1791 al=SSL_AD_DECRYPT_ERROR;
1792 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1798 al=SSL_AD_DECRYPT_ERROR;
1799 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1806 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1807 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1808 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1809 EVP_VerifyUpdate(&md_ctx,param,param_len);
1810 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1813 al=SSL_AD_DECRYPT_ERROR;
1814 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1821 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1822 /* aNULL or kPSK do not need public keys */
1824 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1827 /* still data left over */
1830 al=SSL_AD_DECODE_ERROR;
1831 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1835 EVP_PKEY_free(pkey);
1836 EVP_MD_CTX_cleanup(&md_ctx);
1839 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1841 EVP_PKEY_free(pkey);
1842 #ifndef OPENSSL_NO_RSA
1846 #ifndef OPENSSL_NO_DH
1850 #ifndef OPENSSL_NO_ECDH
1851 BN_CTX_free(bn_ctx);
1852 EC_POINT_free(srvr_ecpoint);
1856 EVP_MD_CTX_cleanup(&md_ctx);
1860 int ssl3_get_certificate_request(SSL *s)
1863 unsigned long n,nc,l;
1864 unsigned int llen, ctype_num,i;
1866 const unsigned char *p,*q;
1868 STACK_OF(X509_NAME) *ca_sk=NULL;
1870 n=s->method->ssl_get_message(s,
1871 SSL3_ST_CR_CERT_REQ_A,
1872 SSL3_ST_CR_CERT_REQ_B,
1877 if (!ok) return((int)n);
1879 s->s3->tmp.cert_req=0;
1881 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1883 s->s3->tmp.reuse_message=1;
1884 /* If we get here we don't need any cached handshake records
1885 * as we wont be doing client auth.
1887 if (s->s3->handshake_buffer)
1889 if (!ssl3_digest_cached_records(s))
1895 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1897 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1898 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1902 /* TLS does not like anon-DH with client cert */
1903 if (s->version > SSL3_VERSION)
1905 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1907 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1908 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1913 p=d=(unsigned char *)s->init_msg;
1915 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1917 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1921 /* get the certificate types */
1923 if (ctype_num > SSL3_CT_NUMBER)
1924 ctype_num=SSL3_CT_NUMBER;
1925 for (i=0; i<ctype_num; i++)
1926 s->s3->tmp.ctype[i]= p[i];
1928 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1931 /* Check we have enough room for signature algorithms and
1932 * following length value.
1934 if ((unsigned long)(p - d + llen + 2) > n)
1936 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1937 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
1940 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
1942 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1943 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
1949 /* get the CA RDNs */
1954 out=fopen("/tmp/vsign.der","w");
1955 fwrite(p,1,llen,out);
1960 if ((unsigned long)(p - d + llen) != n)
1962 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1963 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1967 for (nc=0; nc<llen; )
1970 if ((l+nc+2) > llen)
1972 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1973 goto cont; /* netscape bugs */
1974 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1975 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1981 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1983 /* If netscape tolerance is on, ignore errors */
1984 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1988 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1989 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1996 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1997 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
2000 if (!sk_X509_NAME_push(ca_sk,xn))
2002 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
2016 /* we should setup a certificate to return.... */
2017 s->s3->tmp.cert_req=1;
2018 s->s3->tmp.ctype_num=ctype_num;
2019 if (s->s3->tmp.ca_names != NULL)
2020 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
2021 s->s3->tmp.ca_names=ca_sk;
2026 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
2030 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
2032 return(X509_NAME_cmp(*a,*b));
2034 #ifndef OPENSSL_NO_TLSEXT
2035 int ssl3_get_new_session_ticket(SSL *s)
2037 int ok,al,ret=0, ticklen;
2039 const unsigned char *p;
2042 n=s->method->ssl_get_message(s,
2043 SSL3_ST_CR_SESSION_TICKET_A,
2044 SSL3_ST_CR_SESSION_TICKET_B,
2052 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
2054 s->s3->tmp.reuse_message=1;
2057 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
2059 al=SSL_AD_UNEXPECTED_MESSAGE;
2060 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
2065 /* need at least ticket_lifetime_hint + ticket length */
2066 al = SSL_AD_DECODE_ERROR;
2067 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2071 p=d=(unsigned char *)s->init_msg;
2072 n2l(p, s->session->tlsext_tick_lifetime_hint);
2074 /* ticket_lifetime_hint + ticket_length + ticket */
2075 if (ticklen + 6 != n)
2077 al = SSL_AD_DECODE_ERROR;
2078 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2081 if (s->session->tlsext_tick)
2083 OPENSSL_free(s->session->tlsext_tick);
2084 s->session->tlsext_ticklen = 0;
2086 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2087 if (!s->session->tlsext_tick)
2089 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2092 memcpy(s->session->tlsext_tick, p, ticklen);
2093 s->session->tlsext_ticklen = ticklen;
2094 /* There are two ways to detect a resumed ticket sesion.
2095 * One is to set an appropriate session ID and then the server
2096 * must return a match in ServerHello. This allows the normal
2097 * client session ID matching to work and we know much
2098 * earlier that the ticket has been accepted.
2100 * The other way is to set zero length session ID when the
2101 * ticket is presented and rely on the handshake to determine
2102 * session resumption.
2104 * We choose the former approach because this fits in with
2105 * assumptions elsewhere in OpenSSL. The session ID is set
2106 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2109 EVP_Digest(p, ticklen,
2110 s->session->session_id, &s->session->session_id_length,
2111 #ifndef OPENSSL_NO_SHA256
2112 EVP_sha256(), NULL);
2119 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2124 int ssl3_get_cert_status(SSL *s)
2127 unsigned long resplen,n;
2128 const unsigned char *p;
2130 n=s->method->ssl_get_message(s,
2131 SSL3_ST_CR_CERT_STATUS_A,
2132 SSL3_ST_CR_CERT_STATUS_B,
2133 SSL3_MT_CERTIFICATE_STATUS,
2137 if (!ok) return((int)n);
2140 /* need at least status type + length */
2141 al = SSL_AD_DECODE_ERROR;
2142 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2145 p = (unsigned char *)s->init_msg;
2146 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2148 al = SSL_AD_DECODE_ERROR;
2149 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2153 if (resplen + 4 != n)
2155 al = SSL_AD_DECODE_ERROR;
2156 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2159 if (s->tlsext_ocsp_resp)
2160 OPENSSL_free(s->tlsext_ocsp_resp);
2161 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2162 if (!s->tlsext_ocsp_resp)
2164 al = SSL_AD_INTERNAL_ERROR;
2165 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2168 s->tlsext_ocsp_resplen = resplen;
2169 if (s->ctx->tlsext_status_cb)
2172 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2175 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2176 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2181 al = SSL_AD_INTERNAL_ERROR;
2182 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2188 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2193 int ssl3_get_server_done(SSL *s)
2198 n=s->method->ssl_get_message(s,
2199 SSL3_ST_CR_SRVR_DONE_A,
2200 SSL3_ST_CR_SRVR_DONE_B,
2201 SSL3_MT_SERVER_DONE,
2202 30, /* should be very small, like 0 :-) */
2205 if (!ok) return((int)n);
2208 /* should contain no data */
2209 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2210 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2218 int ssl3_send_client_key_exchange(SSL *s)
2220 unsigned char *p,*d;
2222 unsigned long alg_k;
2223 #ifndef OPENSSL_NO_RSA
2225 EVP_PKEY *pkey=NULL;
2227 #ifndef OPENSSL_NO_KRB5
2229 #endif /* OPENSSL_NO_KRB5 */
2230 #ifndef OPENSSL_NO_ECDH
2231 EC_KEY *clnt_ecdh = NULL;
2232 const EC_POINT *srvr_ecpoint = NULL;
2233 EVP_PKEY *srvr_pub_pkey = NULL;
2234 unsigned char *encodedPoint = NULL;
2235 int encoded_pt_len = 0;
2236 BN_CTX * bn_ctx = NULL;
2239 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2241 d=(unsigned char *)s->init_buf->data;
2244 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2246 /* Fool emacs indentation */
2248 #ifndef OPENSSL_NO_RSA
2249 else if (alg_k & SSL_kRSA)
2252 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2254 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2255 rsa=s->session->sess_cert->peer_rsa_tmp;
2258 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2259 if ((pkey == NULL) ||
2260 (pkey->type != EVP_PKEY_RSA) ||
2261 (pkey->pkey.rsa == NULL))
2263 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2267 EVP_PKEY_free(pkey);
2270 tmp_buf[0]=s->client_version>>8;
2271 tmp_buf[1]=s->client_version&0xff;
2272 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2275 s->session->master_key_length=sizeof tmp_buf;
2278 /* Fix buf for TLS and beyond */
2279 if (s->version > SSL3_VERSION)
2281 n=RSA_public_encrypt(sizeof tmp_buf,
2282 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2284 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2285 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2289 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2293 /* Fix buf for TLS and beyond */
2294 if (s->version > SSL3_VERSION)
2300 s->session->master_key_length=
2301 s->method->ssl3_enc->generate_master_secret(s,
2302 s->session->master_key,
2303 tmp_buf,sizeof tmp_buf);
2304 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2307 #ifndef OPENSSL_NO_KRB5
2308 else if (alg_k & SSL_kKRB5)
2310 krb5_error_code krb5rc;
2311 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2312 /* krb5_data krb5_ap_req; */
2313 krb5_data *enc_ticket;
2314 krb5_data authenticator, *authp = NULL;
2315 EVP_CIPHER_CTX ciph_ctx;
2316 const EVP_CIPHER *enc = NULL;
2317 unsigned char iv[EVP_MAX_IV_LENGTH];
2318 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2319 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2320 + EVP_MAX_IV_LENGTH];
2321 int padl, outl = sizeof(epms);
2323 EVP_CIPHER_CTX_init(&ciph_ctx);
2326 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2328 #endif /* KSSL_DEBUG */
2332 if (KRB5SENDAUTH) authp = &authenticator;
2333 #endif /* KRB5SENDAUTH */
2335 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2337 enc = kssl_map_enc(kssl_ctx->enctype);
2342 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2343 if (krb5rc && kssl_err.text)
2344 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2346 #endif /* KSSL_DEBUG */
2350 ssl3_send_alert(s,SSL3_AL_FATAL,
2351 SSL_AD_HANDSHAKE_FAILURE);
2352 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2357 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2358 ** in place of RFC 2712 KerberosWrapper, as in:
2360 ** Send ticket (copy to *p, set n = length)
2361 ** n = krb5_ap_req.length;
2362 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2363 ** if (krb5_ap_req.data)
2364 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2366 ** Now using real RFC 2712 KerberosWrapper
2367 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2368 ** Note: 2712 "opaque" types are here replaced
2369 ** with a 2-byte length followed by the value.
2371 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2372 ** Where "xx xx" = length bytes. Shown here with
2373 ** optional authenticator omitted.
2376 /* KerberosWrapper.Ticket */
2377 s2n(enc_ticket->length,p);
2378 memcpy(p, enc_ticket->data, enc_ticket->length);
2379 p+= enc_ticket->length;
2380 n = enc_ticket->length + 2;
2382 /* KerberosWrapper.Authenticator */
2383 if (authp && authp->length)
2385 s2n(authp->length,p);
2386 memcpy(p, authp->data, authp->length);
2388 n+= authp->length + 2;
2396 s2n(0,p);/* null authenticator length */
2400 tmp_buf[0]=s->client_version>>8;
2401 tmp_buf[1]=s->client_version&0xff;
2402 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2405 /* 20010420 VRS. Tried it this way; failed.
2406 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2407 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2408 ** kssl_ctx->length);
2409 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2412 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2413 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2415 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2417 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2419 if (outl > (int)sizeof epms)
2421 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2424 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2426 /* KerberosWrapper.EncryptedPreMasterSecret */
2428 memcpy(p, epms, outl);
2432 s->session->master_key_length=
2433 s->method->ssl3_enc->generate_master_secret(s,
2434 s->session->master_key,
2435 tmp_buf, sizeof tmp_buf);
2437 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2438 OPENSSL_cleanse(epms, outl);
2441 #ifndef OPENSSL_NO_DH
2442 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2444 DH *dh_srvr,*dh_clnt;
2446 if (s->session->sess_cert == NULL)
2448 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2449 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2453 if (s->session->sess_cert->peer_dh_tmp != NULL)
2454 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2457 /* we get them from the cert */
2458 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2459 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2463 /* generate a new random key */
2464 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2466 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2469 if (!DH_generate_key(dh_clnt))
2471 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2476 /* use the 'p' output buffer for the DH key, but
2477 * make sure to clear it out afterwards */
2479 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2483 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2488 /* generate master key from the result */
2489 s->session->master_key_length=
2490 s->method->ssl3_enc->generate_master_secret(s,
2491 s->session->master_key,p,n);
2495 /* send off the data */
2496 n=BN_num_bytes(dh_clnt->pub_key);
2498 BN_bn2bin(dh_clnt->pub_key,p);
2503 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2507 #ifndef OPENSSL_NO_ECDH
2508 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2510 const EC_GROUP *srvr_group = NULL;
2512 int ecdh_clnt_cert = 0;
2515 if (s->session->sess_cert == NULL)
2517 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2518 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2522 /* Did we send out the client's
2523 * ECDH share for use in premaster
2524 * computation as part of client certificate?
2525 * If so, set ecdh_clnt_cert to 1.
2527 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2529 /* XXX: For now, we do not support client
2530 * authentication using ECDH certificates.
2531 * To add such support, one needs to add
2532 * code that checks for appropriate
2533 * conditions and sets ecdh_clnt_cert to 1.
2534 * For example, the cert have an ECC
2535 * key on the same curve as the server's
2536 * and the key should be authorized for
2539 * One also needs to add code in ssl3_connect
2540 * to skip sending the certificate verify
2543 * if ((s->cert->key->privatekey != NULL) &&
2544 * (s->cert->key->privatekey->type ==
2545 * EVP_PKEY_EC) && ...)
2546 * ecdh_clnt_cert = 1;
2550 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2552 tkey = s->session->sess_cert->peer_ecdh_tmp;
2556 /* Get the Server Public Key from Cert */
2557 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2558 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2559 if ((srvr_pub_pkey == NULL) ||
2560 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2561 (srvr_pub_pkey->pkey.ec == NULL))
2563 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2564 ERR_R_INTERNAL_ERROR);
2568 tkey = srvr_pub_pkey->pkey.ec;
2571 srvr_group = EC_KEY_get0_group(tkey);
2572 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2574 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2576 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2577 ERR_R_INTERNAL_ERROR);
2581 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2583 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2587 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2589 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2594 /* Reuse key info from our certificate
2595 * We only need our private key to perform
2596 * the ECDH computation.
2598 const BIGNUM *priv_key;
2599 tkey = s->cert->key->privatekey->pkey.ec;
2600 priv_key = EC_KEY_get0_private_key(tkey);
2601 if (priv_key == NULL)
2603 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2606 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2608 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2614 /* Generate a new ECDH key pair */
2615 if (!(EC_KEY_generate_key(clnt_ecdh)))
2617 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2622 /* use the 'p' output buffer for the ECDH key, but
2623 * make sure to clear it out afterwards
2626 field_size = EC_GROUP_get_degree(srvr_group);
2627 if (field_size <= 0)
2629 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2633 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2636 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2641 /* generate master key from the result */
2642 s->session->master_key_length = s->method->ssl3_enc \
2643 -> generate_master_secret(s,
2644 s->session->master_key,
2647 memset(p, 0, n); /* clean up */
2651 /* Send empty client key exch message */
2656 /* First check the size of encoding and
2657 * allocate memory accordingly.
2660 EC_POINT_point2oct(srvr_group,
2661 EC_KEY_get0_public_key(clnt_ecdh),
2662 POINT_CONVERSION_UNCOMPRESSED,
2665 encodedPoint = (unsigned char *)
2666 OPENSSL_malloc(encoded_pt_len *
2667 sizeof(unsigned char));
2668 bn_ctx = BN_CTX_new();
2669 if ((encodedPoint == NULL) ||
2672 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2676 /* Encode the public key */
2677 n = EC_POINT_point2oct(srvr_group,
2678 EC_KEY_get0_public_key(clnt_ecdh),
2679 POINT_CONVERSION_UNCOMPRESSED,
2680 encodedPoint, encoded_pt_len, bn_ctx);
2682 *p = n; /* length of encoded point */
2683 /* Encoded point will be copied here */
2685 /* copy the point */
2686 memcpy((unsigned char *)p, encodedPoint, n);
2687 /* increment n to account for length field */
2691 /* Free allocated memory */
2692 BN_CTX_free(bn_ctx);
2693 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2694 if (clnt_ecdh != NULL)
2695 EC_KEY_free(clnt_ecdh);
2696 EVP_PKEY_free(srvr_pub_pkey);
2698 #endif /* !OPENSSL_NO_ECDH */
2699 else if (alg_k & SSL_kGOST)
2701 /* GOST key exchange message creation */
2702 EVP_PKEY_CTX *pkey_ctx;
2705 unsigned int md_len;
2707 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2708 EVP_MD_CTX *ukm_hash;
2711 /* Get server sertificate PKEY and create ctx from it */
2712 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2714 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2716 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2720 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2721 /* If we have send a certificate, and certificate key
2723 * parameters match those of server certificate, use
2724 * certificate key for key exchange
2727 /* Otherwise, generate ephemeral key pair */
2729 EVP_PKEY_encrypt_init(pkey_ctx);
2730 /* Generate session key */
2731 RAND_bytes(premaster_secret,32);
2732 /* If we have client certificate, use its secret as peer key */
2733 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2734 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2735 /* If there was an error - just ignore it. Ephemeral key
2741 /* Compute shared IV and store it in algorithm-specific
2743 ukm_hash = EVP_MD_CTX_create();
2744 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2745 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2746 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2747 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2748 EVP_MD_CTX_destroy(ukm_hash);
2749 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2751 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2755 /* Make GOST keytransport blob message */
2756 /*Encapsulate it into sequence */
2757 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2759 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2760 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2767 *(p++)= msglen & 0xff;
2772 *(p++)= msglen & 0xff;
2775 memcpy(p, tmp, msglen);
2776 /* Check if pubkey from client certificate was used */
2777 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2779 /* Set flag "skip certificate verify" */
2780 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2782 EVP_PKEY_CTX_free(pkey_ctx);
2783 s->session->master_key_length=
2784 s->method->ssl3_enc->generate_master_secret(s,
2785 s->session->master_key,premaster_secret,32);
2786 EVP_PKEY_free(pub_key);
2789 #ifndef OPENSSL_NO_SRP
2790 else if (alg_k & SSL_kSRP)
2792 if (s->srp_ctx.A != NULL)
2794 /* send off the data */
2795 n=BN_num_bytes(s->srp_ctx.A);
2797 BN_bn2bin(s->srp_ctx.A,p);
2802 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2805 if (s->session->srp_username != NULL)
2806 OPENSSL_free(s->session->srp_username);
2807 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2808 if (s->session->srp_username == NULL)
2810 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2811 ERR_R_MALLOC_FAILURE);
2815 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2817 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2822 #ifndef OPENSSL_NO_PSK
2823 else if (alg_k & SSL_kPSK)
2825 char identity[PSK_MAX_IDENTITY_LEN];
2826 unsigned char *t = NULL;
2827 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2828 unsigned int pre_ms_len = 0, psk_len = 0;
2832 if (s->psk_client_callback == NULL)
2834 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2835 SSL_R_PSK_NO_CLIENT_CB);
2839 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2840 identity, PSK_MAX_IDENTITY_LEN,
2841 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2842 if (psk_len > PSK_MAX_PSK_LEN)
2844 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2845 ERR_R_INTERNAL_ERROR);
2848 else if (psk_len == 0)
2850 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2851 SSL_R_PSK_IDENTITY_NOT_FOUND);
2855 /* create PSK pre_master_secret */
2856 pre_ms_len = 2+psk_len+2+psk_len;
2858 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2860 memset(t, 0, psk_len);
2864 if (s->session->psk_identity_hint != NULL)
2865 OPENSSL_free(s->session->psk_identity_hint);
2866 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2867 if (s->ctx->psk_identity_hint != NULL &&
2868 s->session->psk_identity_hint == NULL)
2870 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2871 ERR_R_MALLOC_FAILURE);
2875 if (s->session->psk_identity != NULL)
2876 OPENSSL_free(s->session->psk_identity);
2877 s->session->psk_identity = BUF_strdup(identity);
2878 if (s->session->psk_identity == NULL)
2880 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2881 ERR_R_MALLOC_FAILURE);
2885 s->session->master_key_length =
2886 s->method->ssl3_enc->generate_master_secret(s,
2887 s->session->master_key,
2888 psk_or_pre_ms, pre_ms_len);
2889 n = strlen(identity);
2891 memcpy(p, identity, n);
2895 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2896 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2899 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2906 ssl3_send_alert(s, SSL3_AL_FATAL,
2907 SSL_AD_HANDSHAKE_FAILURE);
2908 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2909 ERR_R_INTERNAL_ERROR);
2913 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2916 s->state=SSL3_ST_CW_KEY_EXCH_B;
2917 /* number of bytes to write */
2922 /* SSL3_ST_CW_KEY_EXCH_B */
2923 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2925 #ifndef OPENSSL_NO_ECDH
2926 BN_CTX_free(bn_ctx);
2927 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2928 if (clnt_ecdh != NULL)
2929 EC_KEY_free(clnt_ecdh);
2930 EVP_PKEY_free(srvr_pub_pkey);
2935 int ssl3_send_client_verify(SSL *s)
2937 unsigned char *p,*d;
2938 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2940 EVP_PKEY_CTX *pctx=NULL;
2946 EVP_MD_CTX_init(&mctx);
2948 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2950 d=(unsigned char *)s->init_buf->data;
2952 pkey=s->cert->key->privatekey;
2953 /* Create context from key and test if sha1 is allowed as digest */
2954 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2955 EVP_PKEY_sign_init(pctx);
2956 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2958 if (TLS1_get_version(s) < TLS1_2_VERSION)
2959 s->method->ssl3_enc->cert_verify_mac(s,
2961 &(data[MD5_DIGEST_LENGTH]));
2967 /* For TLS v1.2 send signature algorithm and signature
2968 * using agreed digest and cached handshake records.
2970 if (TLS1_get_version(s) >= TLS1_2_VERSION)
2974 const EVP_MD *md = s->cert->key->digest;
2975 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
2977 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
2979 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2980 ERR_R_INTERNAL_ERROR);
2985 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
2988 if (!EVP_SignInit_ex(&mctx, md, NULL)
2989 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
2990 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
2992 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2998 if (!ssl3_digest_cached_records(s))
3002 #ifndef OPENSSL_NO_RSA
3003 if (pkey->type == EVP_PKEY_RSA)
3005 s->method->ssl3_enc->cert_verify_mac(s,
3008 if (RSA_sign(NID_md5_sha1, data,
3009 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
3010 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
3012 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
3020 #ifndef OPENSSL_NO_DSA
3021 if (pkey->type == EVP_PKEY_DSA)
3023 if (!DSA_sign(pkey->save_type,
3024 &(data[MD5_DIGEST_LENGTH]),
3025 SHA_DIGEST_LENGTH,&(p[2]),
3026 (unsigned int *)&j,pkey->pkey.dsa))
3028 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
3036 #ifndef OPENSSL_NO_ECDSA
3037 if (pkey->type == EVP_PKEY_EC)
3039 if (!ECDSA_sign(pkey->save_type,
3040 &(data[MD5_DIGEST_LENGTH]),
3041 SHA_DIGEST_LENGTH,&(p[2]),
3042 (unsigned int *)&j,pkey->pkey.ec))
3044 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3053 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
3055 unsigned char signbuf[64];
3058 s->method->ssl3_enc->cert_verify_mac(s,
3059 NID_id_GostR3411_94,
3061 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
3062 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3063 ERR_R_INTERNAL_ERROR);
3066 for (i=63,j=0; i>=0; j++, i--) {
3074 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
3077 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
3080 s->state=SSL3_ST_CW_CERT_VRFY_B;
3081 s->init_num=(int)n+4;
3084 EVP_MD_CTX_cleanup(&mctx);
3085 EVP_PKEY_CTX_free(pctx);
3086 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3088 EVP_MD_CTX_cleanup(&mctx);
3089 EVP_PKEY_CTX_free(pctx);
3093 int ssl3_send_client_certificate(SSL *s)
3096 EVP_PKEY *pkey=NULL;
3100 if (s->state == SSL3_ST_CW_CERT_A)
3102 if ((s->cert == NULL) ||
3103 (s->cert->key->x509 == NULL) ||
3104 (s->cert->key->privatekey == NULL))
3105 s->state=SSL3_ST_CW_CERT_B;
3107 s->state=SSL3_ST_CW_CERT_C;
3110 /* We need to get a client cert */
3111 if (s->state == SSL3_ST_CW_CERT_B)
3113 /* If we get an error, we need to
3114 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3115 * We then get retied later */
3117 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3120 s->rwstate=SSL_X509_LOOKUP;
3123 s->rwstate=SSL_NOTHING;
3124 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3126 s->state=SSL3_ST_CW_CERT_B;
3127 if ( !SSL_use_certificate(s,x509) ||
3128 !SSL_use_PrivateKey(s,pkey))
3134 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3137 if (x509 != NULL) X509_free(x509);
3138 if (pkey != NULL) EVP_PKEY_free(pkey);
3141 if (s->version == SSL3_VERSION)
3143 s->s3->tmp.cert_req=0;
3144 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3149 s->s3->tmp.cert_req=2;
3153 /* Ok, we have a cert */
3154 s->state=SSL3_ST_CW_CERT_C;
3157 if (s->state == SSL3_ST_CW_CERT_C)
3159 s->state=SSL3_ST_CW_CERT_D;
3160 l=ssl3_output_cert_chain(s,
3161 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
3165 /* SSL3_ST_CW_CERT_D */
3166 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3169 #define has_bits(i,m) (((i)&(m)) == (m))
3171 int ssl3_check_cert_and_algorithm(SSL *s)
3175 EVP_PKEY *pkey=NULL;
3177 #ifndef OPENSSL_NO_RSA
3180 #ifndef OPENSSL_NO_DH
3184 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3185 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3187 /* we don't have a certificate */
3188 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3191 sc=s->session->sess_cert;
3194 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3198 #ifndef OPENSSL_NO_RSA
3199 rsa=s->session->sess_cert->peer_rsa_tmp;
3201 #ifndef OPENSSL_NO_DH
3202 dh=s->session->sess_cert->peer_dh_tmp;
3205 /* This is the passed certificate */
3207 idx=sc->peer_cert_type;
3208 #ifndef OPENSSL_NO_ECDH
3209 if (idx == SSL_PKEY_ECC)
3211 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3213 { /* check failed */
3214 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3223 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3224 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3225 EVP_PKEY_free(pkey);
3228 /* Check that we have a certificate if we require one */
3229 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3231 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3234 #ifndef OPENSSL_NO_DSA
3235 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3237 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3241 #ifndef OPENSSL_NO_RSA
3242 if ((alg_k & SSL_kRSA) &&
3243 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3245 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3249 #ifndef OPENSSL_NO_DH
3250 if ((alg_k & SSL_kEDH) &&
3251 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3253 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3256 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3258 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3261 #ifndef OPENSSL_NO_DSA
3262 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3264 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3270 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3272 #ifndef OPENSSL_NO_RSA
3273 if (alg_k & SSL_kRSA)
3276 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3278 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3284 #ifndef OPENSSL_NO_DH
3285 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3288 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3290 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3297 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3303 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3308 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
3309 int ssl3_send_next_proto(SSL *s)
3311 unsigned int len, padding_len;
3314 if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
3316 len = s->next_proto_negotiated_len;
3317 padding_len = 32 - ((len + 2) % 32);
3318 d = (unsigned char *)s->init_buf->data;
3320 memcpy(d + 5, s->next_proto_negotiated, len);
3321 d[5 + len] = padding_len;
3322 memset(d + 6 + len, 0, padding_len);
3323 *(d++)=SSL3_MT_NEXT_PROTO;
3324 l2n3(2 + len + padding_len, d);
3325 s->state = SSL3_ST_CW_NEXT_PROTO_B;
3326 s->init_num = 4 + 2 + len + padding_len;
3330 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3332 #endif /* !OPENSSL_NO_TLSEXT && !OPENSSL_NO_NEXTPROTONEG */
3334 /* Check to see if handshake is full or resumed. Usually this is just a
3335 * case of checking to see if a cache hit has occurred. In the case of
3336 * session tickets we have to check the next message to be sure.
3339 #ifndef OPENSSL_NO_TLSEXT
3340 int ssl3_check_finished(SSL *s)
3344 /* If we have no ticket it cannot be a resumed session. */
3345 if (!s->session->tlsext_tick)
3347 /* this function is called when we really expect a Certificate
3348 * message, so permit appropriate message length */
3349 n=s->method->ssl_get_message(s,
3355 if (!ok) return((int)n);
3356 s->s3->tmp.reuse_message = 1;
3357 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3358 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3365 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3368 #ifndef OPENSSL_NO_ENGINE
3369 if (s->ctx->client_cert_engine)
3371 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3372 SSL_get_client_CA_list(s),
3373 px509, ppkey, NULL, NULL, NULL);
3378 if (s->ctx->client_cert_cb)
3379 i = s->ctx->client_cert_cb(s,px509,ppkey);