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);
212 case SSL_ST_RENEGOTIATE:
214 s->state=SSL_ST_CONNECT;
215 s->ctx->stats.sess_connect_renegotiate++;
219 case SSL_ST_BEFORE|SSL_ST_CONNECT:
220 case SSL_ST_OK|SSL_ST_CONNECT:
223 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
225 if ((s->version & 0xff00 ) != 0x0300)
227 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
232 /* s->version=SSL3_VERSION; */
233 s->type=SSL_ST_CONNECT;
235 if (s->init_buf == NULL)
237 if ((buf=BUF_MEM_new()) == NULL)
242 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
251 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
253 /* setup buffing BIO */
254 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
256 /* don't push the buffering BIO quite yet */
258 ssl3_init_finished_mac(s);
260 s->state=SSL3_ST_CW_CLNT_HELLO_A;
261 s->ctx->stats.sess_connect++;
265 case SSL3_ST_CW_CLNT_HELLO_A:
266 case SSL3_ST_CW_CLNT_HELLO_B:
269 ret=ssl3_client_hello(s);
270 if (ret <= 0) goto end;
271 s->state=SSL3_ST_CR_SRVR_HELLO_A;
274 /* turn on buffering for the next lot of output */
275 if (s->bbio != s->wbio)
276 s->wbio=BIO_push(s->bbio,s->wbio);
280 case SSL3_ST_CR_SRVR_HELLO_A:
281 case SSL3_ST_CR_SRVR_HELLO_B:
282 ret=ssl3_get_server_hello(s);
283 #ifndef OPENSSL_NO_SRP
284 if (ret == 0 && s->s3->warn_alert == SSL_AD_MISSING_SRP_USERNAME)
286 if (!SRP_have_to_put_srp_username(s))
288 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_MISSING_SRP_USERNAME);
289 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_USER_CANCELLED);
292 s->state=SSL3_ST_CW_CLNT_HELLO_A;
293 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
297 if (ret <= 0) goto end;
301 s->state=SSL3_ST_CR_FINISHED_A;
302 #ifndef OPENSSL_NO_TLSEXT
303 if (s->tlsext_ticket_expected)
305 /* receive renewed session ticket */
306 s->state=SSL3_ST_CR_SESSION_TICKET_A;
311 s->state=SSL3_ST_CR_CERT_A;
315 case SSL3_ST_CR_CERT_A:
316 case SSL3_ST_CR_CERT_B:
317 #ifndef OPENSSL_NO_TLSEXT
318 ret=ssl3_check_finished(s);
319 if (ret <= 0) goto end;
323 if (s->tlsext_ticket_expected)
324 s->state=SSL3_ST_CR_SESSION_TICKET_A;
326 s->state=SSL3_ST_CR_FINISHED_A;
331 /* Check if it is anon DH/ECDH */
333 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
334 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
336 ret=ssl3_get_server_certificate(s);
337 if (ret <= 0) goto end;
338 #ifndef OPENSSL_NO_TLSEXT
339 if (s->tlsext_status_expected)
340 s->state=SSL3_ST_CR_CERT_STATUS_A;
342 s->state=SSL3_ST_CR_KEY_EXCH_A;
347 s->state=SSL3_ST_CR_KEY_EXCH_A;
354 s->state=SSL3_ST_CR_KEY_EXCH_A;
359 case SSL3_ST_CR_KEY_EXCH_A:
360 case SSL3_ST_CR_KEY_EXCH_B:
361 ret=ssl3_get_key_exchange(s);
362 if (ret <= 0) goto end;
363 s->state=SSL3_ST_CR_CERT_REQ_A;
366 /* at this point we check that we have the
367 * required stuff from the server */
368 if (!ssl3_check_cert_and_algorithm(s))
375 case SSL3_ST_CR_CERT_REQ_A:
376 case SSL3_ST_CR_CERT_REQ_B:
377 ret=ssl3_get_certificate_request(s);
378 if (ret <= 0) goto end;
379 s->state=SSL3_ST_CR_SRVR_DONE_A;
383 case SSL3_ST_CR_SRVR_DONE_A:
384 case SSL3_ST_CR_SRVR_DONE_B:
385 ret=ssl3_get_server_done(s);
386 if (ret <= 0) goto end;
387 #ifndef OPENSSL_NO_SRP
388 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP)
390 if ((ret = SRP_Calc_A_param(s))<=0)
392 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SRP_A_CALC);
393 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
398 if (s->s3->tmp.cert_req)
399 s->state=SSL3_ST_CW_CERT_A;
401 s->state=SSL3_ST_CW_KEY_EXCH_A;
406 case SSL3_ST_CW_CERT_A:
407 case SSL3_ST_CW_CERT_B:
408 case SSL3_ST_CW_CERT_C:
409 case SSL3_ST_CW_CERT_D:
410 ret=ssl3_send_client_certificate(s);
411 if (ret <= 0) goto end;
412 s->state=SSL3_ST_CW_KEY_EXCH_A;
416 case SSL3_ST_CW_KEY_EXCH_A:
417 case SSL3_ST_CW_KEY_EXCH_B:
418 ret=ssl3_send_client_key_exchange(s);
419 if (ret <= 0) goto end;
420 /* EAY EAY EAY need to check for DH fix cert
422 /* For TLS, cert_req is set to 2, so a cert chain
423 * of nothing is sent, but no verify packet is sent */
424 /* XXX: For now, we do not support client
425 * authentication in ECDH cipher suites with
426 * ECDH (rather than ECDSA) certificates.
427 * We need to skip the certificate verify
428 * message when client's ECDH public key is sent
429 * inside the client certificate.
431 if (s->s3->tmp.cert_req == 1)
433 s->state=SSL3_ST_CW_CERT_VRFY_A;
437 s->state=SSL3_ST_CW_CHANGE_A;
438 s->s3->change_cipher_spec=0;
440 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
442 s->state=SSL3_ST_CW_CHANGE_A;
443 s->s3->change_cipher_spec=0;
449 case SSL3_ST_CW_CERT_VRFY_A:
450 case SSL3_ST_CW_CERT_VRFY_B:
451 ret=ssl3_send_client_verify(s);
452 if (ret <= 0) goto end;
453 s->state=SSL3_ST_CW_CHANGE_A;
455 s->s3->change_cipher_spec=0;
458 case SSL3_ST_CW_CHANGE_A:
459 case SSL3_ST_CW_CHANGE_B:
460 ret=ssl3_send_change_cipher_spec(s,
461 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
462 if (ret <= 0) goto end;
463 s->state=SSL3_ST_CW_FINISHED_A;
466 s->session->cipher=s->s3->tmp.new_cipher;
467 #ifdef OPENSSL_NO_COMP
468 s->session->compress_meth=0;
470 if (s->s3->tmp.new_compression == NULL)
471 s->session->compress_meth=0;
473 s->session->compress_meth=
474 s->s3->tmp.new_compression->id;
476 if (!s->method->ssl3_enc->setup_key_block(s))
482 if (!s->method->ssl3_enc->change_cipher_state(s,
483 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
491 case SSL3_ST_CW_FINISHED_A:
492 case SSL3_ST_CW_FINISHED_B:
493 ret=ssl3_send_finished(s,
494 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
495 s->method->ssl3_enc->client_finished_label,
496 s->method->ssl3_enc->client_finished_label_len);
497 if (ret <= 0) goto end;
498 s->state=SSL3_ST_CW_FLUSH;
501 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
504 s->s3->tmp.next_state=SSL_ST_OK;
505 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
508 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
509 s->s3->delay_buf_pop_ret=0;
514 #ifndef OPENSSL_NO_TLSEXT
515 /* Allow NewSessionTicket if ticket expected */
516 if (s->tlsext_ticket_expected)
517 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
521 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
526 #ifndef OPENSSL_NO_TLSEXT
527 case SSL3_ST_CR_SESSION_TICKET_A:
528 case SSL3_ST_CR_SESSION_TICKET_B:
529 ret=ssl3_get_new_session_ticket(s);
530 if (ret <= 0) goto end;
531 s->state=SSL3_ST_CR_FINISHED_A;
535 case SSL3_ST_CR_CERT_STATUS_A:
536 case SSL3_ST_CR_CERT_STATUS_B:
537 ret=ssl3_get_cert_status(s);
538 if (ret <= 0) goto end;
539 s->state=SSL3_ST_CR_KEY_EXCH_A;
544 case SSL3_ST_CR_FINISHED_A:
545 case SSL3_ST_CR_FINISHED_B:
547 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
548 SSL3_ST_CR_FINISHED_B);
549 if (ret <= 0) goto end;
552 s->state=SSL3_ST_CW_CHANGE_A;
558 case SSL3_ST_CW_FLUSH:
559 s->rwstate=SSL_WRITING;
560 if (BIO_flush(s->wbio) <= 0)
565 s->rwstate=SSL_NOTHING;
566 s->state=s->s3->tmp.next_state;
570 /* clean a few things up */
571 ssl3_cleanup_key_block(s);
573 if (s->init_buf != NULL)
575 BUF_MEM_free(s->init_buf);
579 /* If we are not 'joining' the last two packets,
580 * remove the buffering now */
581 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
582 ssl_free_wbio_buffer(s);
583 /* else do it later in ssl3_write */
589 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
590 if (s->hit) s->ctx->stats.sess_hit++;
594 s->handshake_func=ssl3_connect;
595 s->ctx->stats.sess_connect_good++;
597 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
603 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
609 /* did we do anything */
610 if (!s->s3->tmp.reuse_message && !skip)
614 if ((ret=BIO_flush(s->wbio)) <= 0)
618 if ((cb != NULL) && (s->state != state))
622 cb(s,SSL_CB_CONNECT_LOOP,1);
633 cb(s,SSL_CB_CONNECT_EXIT,ret);
638 int ssl3_client_hello(SSL *s)
643 unsigned long Time,l;
644 #ifndef OPENSSL_NO_COMP
649 buf=(unsigned char *)s->init_buf->data;
650 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
652 SSL_SESSION *sess = s->session;
653 if ((sess == NULL) ||
654 (sess->ssl_version != s->version) ||
655 #ifdef OPENSSL_NO_TLSEXT
656 !sess->session_id_length ||
658 (!sess->session_id_length && !sess->tlsext_tick) ||
660 (sess->not_resumable))
662 if (!ssl_get_new_session(s,0))
665 /* else use the pre-loaded session */
667 p=s->s3->client_random;
668 Time=(unsigned long)time(NULL); /* Time */
670 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
673 /* Do the message type and length last */
676 *(p++)=s->version>>8;
677 *(p++)=s->version&0xff;
678 s->client_version=s->version;
681 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
688 i=s->session->session_id_length;
692 if (i > (int)sizeof(s->session->session_id))
694 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
697 memcpy(p,s->session->session_id,i);
701 /* Ciphers supported */
702 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
705 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
712 #ifdef OPENSSL_NO_COMP
716 if ((s->options & SSL_OP_NO_COMPRESSION)
717 || !s->ctx->comp_methods)
720 j=sk_SSL_COMP_num(s->ctx->comp_methods);
724 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
728 *(p++)=0; /* Add the NULL method */
730 #ifndef OPENSSL_NO_TLSEXT
732 if (ssl_prepare_clienthello_tlsext(s) <= 0)
734 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
737 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
739 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
746 *(d++)=SSL3_MT_CLIENT_HELLO;
749 s->state=SSL3_ST_CW_CLNT_HELLO_B;
750 /* number of bytes to write */
755 /* SSL3_ST_CW_CLNT_HELLO_B */
756 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
761 int ssl3_get_server_hello(SSL *s)
763 STACK_OF(SSL_CIPHER) *sk;
769 #ifndef OPENSSL_NO_COMP
773 n=s->method->ssl_get_message(s,
774 SSL3_ST_CR_SRVR_HELLO_A,
775 SSL3_ST_CR_SRVR_HELLO_B,
780 if (!ok) return((int)n);
782 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
784 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
786 if ( s->d1->send_cookie == 0)
788 s->s3->tmp.reuse_message = 1;
791 else /* already sent a cookie */
793 al=SSL_AD_UNEXPECTED_MESSAGE;
794 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
800 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
802 al=SSL_AD_UNEXPECTED_MESSAGE;
803 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
807 d=p=(unsigned char *)s->init_msg;
809 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
811 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
812 s->version=(s->version&0xff00)|p[1];
813 al=SSL_AD_PROTOCOL_VERSION;
818 /* load the server hello data */
819 /* load the server random */
820 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
823 /* get the session-id */
826 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
828 al=SSL_AD_ILLEGAL_PARAMETER;
829 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
833 #ifndef OPENSSL_NO_TLSEXT
834 /* check if we want to resume the session based on external pre-shared secret */
835 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
837 SSL_CIPHER *pref_cipher=NULL;
838 s->session->master_key_length=sizeof(s->session->master_key);
839 if (s->tls_session_secret_cb(s, s->session->master_key,
840 &s->session->master_key_length,
842 s->tls_session_secret_cb_arg))
844 s->session->cipher = pref_cipher ?
845 pref_cipher : ssl_get_cipher_by_char(s, p+j);
848 #endif /* OPENSSL_NO_TLSEXT */
850 if (j != 0 && j == s->session->session_id_length
851 && memcmp(p,s->session->session_id,j) == 0)
853 if(s->sid_ctx_length != s->session->sid_ctx_length
854 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
856 /* actually a client application bug */
857 al=SSL_AD_ILLEGAL_PARAMETER;
858 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
863 else /* a miss or crap from the other end */
865 /* If we were trying for session-id reuse, make a new
866 * SSL_SESSION so we don't stuff up other people */
868 if (s->session->session_id_length > 0)
870 if (!ssl_get_new_session(s,0))
872 al=SSL_AD_INTERNAL_ERROR;
876 s->session->session_id_length=j;
877 memcpy(s->session->session_id,p,j); /* j could be 0 */
880 c=ssl_get_cipher_by_char(s,p);
884 al=SSL_AD_ILLEGAL_PARAMETER;
885 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
888 /* TLS v1.2 only ciphersuites require v1.2 or later */
889 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
890 (TLS1_get_version(s) < TLS1_2_VERSION))
892 al=SSL_AD_ILLEGAL_PARAMETER;
893 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
896 p+=ssl_put_cipher_by_char(s,NULL,NULL);
898 sk=ssl_get_ciphers_by_id(s);
899 i=sk_SSL_CIPHER_find(sk,c);
902 /* we did not say we would use this cipher */
903 al=SSL_AD_ILLEGAL_PARAMETER;
904 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
908 /* Depending on the session caching (internal/external), the cipher
909 and/or cipher_id values may not be set. Make sure that
910 cipher_id is set and use it for comparison. */
911 if (s->session->cipher)
912 s->session->cipher_id = s->session->cipher->id;
913 if (s->hit && (s->session->cipher_id != c->id))
915 /* Workaround is now obsolete */
918 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
921 al=SSL_AD_ILLEGAL_PARAMETER;
922 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
926 s->s3->tmp.new_cipher=c;
927 /* Don't digest cached records if TLS v1.2: we may need them for
928 * client authentication.
930 if (TLS1_get_version(s) < TLS1_2_VERSION && !ssl3_digest_cached_records(s))
932 /* lets get the compression algorithm */
934 #ifdef OPENSSL_NO_COMP
937 al=SSL_AD_ILLEGAL_PARAMETER;
938 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
941 /* If compression is disabled we'd better not try to resume a session
944 if (s->session->compress_meth != 0)
946 al=SSL_AD_INTERNAL_ERROR;
947 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
952 if (s->hit && j != s->session->compress_meth)
954 al=SSL_AD_ILLEGAL_PARAMETER;
955 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
960 else if (s->options & SSL_OP_NO_COMPRESSION)
962 al=SSL_AD_ILLEGAL_PARAMETER;
963 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
967 comp=ssl3_comp_find(s->ctx->comp_methods,j);
969 if ((j != 0) && (comp == NULL))
971 al=SSL_AD_ILLEGAL_PARAMETER;
972 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
977 s->s3->tmp.new_compression=comp;
981 #ifndef OPENSSL_NO_TLSEXT
983 if (s->version >= SSL3_VERSION)
985 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
987 /* 'al' set by ssl_parse_serverhello_tlsext */
988 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
991 if (ssl_check_serverhello_tlsext(s) <= 0)
993 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
1001 /* wrong packet length */
1002 al=SSL_AD_DECODE_ERROR;
1003 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
1009 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1014 int ssl3_get_server_certificate(SSL *s)
1016 int al,i,ok,ret= -1;
1017 unsigned long n,nc,llen,l;
1019 const unsigned char *q,*p;
1021 STACK_OF(X509) *sk=NULL;
1023 EVP_PKEY *pkey=NULL;
1024 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1026 n=s->method->ssl_get_message(s,
1033 if (!ok) return((int)n);
1035 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1036 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1037 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1039 s->s3->tmp.reuse_message=1;
1043 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1045 al=SSL_AD_UNEXPECTED_MESSAGE;
1046 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1049 p=d=(unsigned char *)s->init_msg;
1051 if ((sk=sk_X509_new_null()) == NULL)
1053 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1060 al=SSL_AD_DECODE_ERROR;
1061 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1064 for (nc=0; nc<llen; )
1067 if ((l+nc+3) > llen)
1069 al=SSL_AD_DECODE_ERROR;
1070 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1075 x=d2i_X509(NULL,&q,l);
1078 al=SSL_AD_BAD_CERTIFICATE;
1079 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1084 al=SSL_AD_DECODE_ERROR;
1085 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1088 if (!sk_X509_push(sk,x))
1090 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1098 i=ssl_verify_cert_chain(s,sk);
1099 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1100 #ifndef OPENSSL_NO_KRB5
1101 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1102 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1103 #endif /* OPENSSL_NO_KRB5 */
1106 al=ssl_verify_alarm_type(s->verify_result);
1107 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1110 ERR_clear_error(); /* but we keep s->verify_result */
1112 sc=ssl_sess_cert_new();
1113 if (sc == NULL) goto err;
1115 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1116 s->session->sess_cert=sc;
1119 /* Inconsistency alert: cert_chain does include the peer's
1120 * certificate, which we don't include in s3_srvr.c */
1121 x=sk_X509_value(sk,0);
1123 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1125 pkey=X509_get_pubkey(x);
1127 /* VRS: allow null cert if auth == KRB5 */
1128 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1129 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1133 printf("pkey,x = %p, %p\n", pkey,x);
1134 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1135 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1136 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1137 #endif /* KSSL_DEBUG */
1139 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1143 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1144 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1148 i=ssl_cert_type(x,pkey);
1149 if (need_cert && i < 0)
1153 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1154 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1160 sc->peer_cert_type=i;
1161 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1162 /* Why would the following ever happen?
1163 * We just created sc a couple of lines ago. */
1164 if (sc->peer_pkeys[i].x509 != NULL)
1165 X509_free(sc->peer_pkeys[i].x509);
1166 sc->peer_pkeys[i].x509=x;
1167 sc->peer_key= &(sc->peer_pkeys[i]);
1169 if (s->session->peer != NULL)
1170 X509_free(s->session->peer);
1171 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1176 sc->peer_cert_type=i;
1179 if (s->session->peer != NULL)
1180 X509_free(s->session->peer);
1181 s->session->peer=NULL;
1183 s->session->verify_result = s->verify_result;
1191 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1194 EVP_PKEY_free(pkey);
1196 sk_X509_pop_free(sk,X509_free);
1200 int ssl3_get_key_exchange(SSL *s)
1202 #ifndef OPENSSL_NO_RSA
1203 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1206 unsigned char *param,*p;
1207 int al,i,j,param_len,ok;
1209 EVP_PKEY *pkey=NULL;
1210 const EVP_MD *md = NULL;
1211 #ifndef OPENSSL_NO_RSA
1214 #ifndef OPENSSL_NO_DH
1217 #ifndef OPENSSL_NO_ECDH
1218 EC_KEY *ecdh = NULL;
1219 BN_CTX *bn_ctx = NULL;
1220 EC_POINT *srvr_ecpoint = NULL;
1222 int encoded_pt_len = 0;
1225 /* use same message size as in ssl3_get_certificate_request()
1226 * as ServerKeyExchange message may be skipped */
1227 n=s->method->ssl_get_message(s,
1228 SSL3_ST_CR_KEY_EXCH_A,
1229 SSL3_ST_CR_KEY_EXCH_B,
1233 if (!ok) return((int)n);
1235 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1237 #ifndef OPENSSL_NO_PSK
1238 /* In plain PSK ciphersuite, ServerKeyExchange can be
1239 omitted if no identity hint is sent. Set
1240 session->sess_cert anyway to avoid problems
1242 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1244 s->session->sess_cert=ssl_sess_cert_new();
1245 if (s->ctx->psk_identity_hint)
1246 OPENSSL_free(s->ctx->psk_identity_hint);
1247 s->ctx->psk_identity_hint = NULL;
1250 s->s3->tmp.reuse_message=1;
1254 param=p=(unsigned char *)s->init_msg;
1255 if (s->session->sess_cert != NULL)
1257 #ifndef OPENSSL_NO_RSA
1258 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1260 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1261 s->session->sess_cert->peer_rsa_tmp=NULL;
1264 #ifndef OPENSSL_NO_DH
1265 if (s->session->sess_cert->peer_dh_tmp)
1267 DH_free(s->session->sess_cert->peer_dh_tmp);
1268 s->session->sess_cert->peer_dh_tmp=NULL;
1271 #ifndef OPENSSL_NO_ECDH
1272 if (s->session->sess_cert->peer_ecdh_tmp)
1274 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1275 s->session->sess_cert->peer_ecdh_tmp=NULL;
1281 s->session->sess_cert=ssl_sess_cert_new();
1285 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1286 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1287 EVP_MD_CTX_init(&md_ctx);
1289 #ifndef OPENSSL_NO_PSK
1290 if (alg_k & SSL_kPSK)
1292 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1294 al=SSL_AD_HANDSHAKE_FAILURE;
1297 /* Store PSK identity hint for later use, hint is used
1298 * in ssl3_send_client_key_exchange. Assume that the
1299 * maximum length of a PSK identity hint can be as
1300 * long as the maximum length of a PSK identity. */
1301 if (i > PSK_MAX_IDENTITY_LEN)
1303 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1304 SSL_R_DATA_LENGTH_TOO_LONG);
1309 al=SSL_AD_DECODE_ERROR;
1310 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1311 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1314 /* If received PSK identity hint contains NULL
1315 * characters, the hint is truncated from the first
1316 * NULL. p may not be ending with NULL, so create a
1317 * NULL-terminated string. */
1318 memcpy(tmp_id_hint, p, i);
1319 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1320 if (s->ctx->psk_identity_hint != NULL)
1321 OPENSSL_free(s->ctx->psk_identity_hint);
1322 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1323 if (s->ctx->psk_identity_hint == NULL)
1325 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1333 #endif /* !OPENSSL_NO_PSK */
1334 #ifndef OPENSSL_NO_SRP
1335 if (alg_k & SSL_kSRP)
1341 al=SSL_AD_DECODE_ERROR;
1342 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1345 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1347 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1356 al=SSL_AD_DECODE_ERROR;
1357 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1360 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1362 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1367 i = (unsigned int)(p[0]);
1372 al=SSL_AD_DECODE_ERROR;
1373 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1376 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1378 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1387 al=SSL_AD_DECODE_ERROR;
1388 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1391 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1393 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1399 /* We must check if there is a certificate */
1400 #ifndef OPENSSL_NO_RSA
1401 if (alg_a & SSL_aRSA)
1402 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1407 #ifndef OPENSSL_NO_DSA
1408 else if (alg_a & SSL_aDSS)
1409 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1413 #endif /* !OPENSSL_NO_SRP */
1414 #ifndef OPENSSL_NO_RSA
1415 if (alg_k & SSL_kRSA)
1417 if ((rsa=RSA_new()) == NULL)
1419 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1426 al=SSL_AD_DECODE_ERROR;
1427 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1430 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1432 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1441 al=SSL_AD_DECODE_ERROR;
1442 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1445 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1447 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1453 /* this should be because we are using an export cipher */
1454 if (alg_a & SSL_aRSA)
1455 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1458 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1461 s->session->sess_cert->peer_rsa_tmp=rsa;
1464 #else /* OPENSSL_NO_RSA */
1468 #ifndef OPENSSL_NO_DH
1469 else if (alg_k & SSL_kEDH)
1471 if ((dh=DH_new()) == NULL)
1473 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1480 al=SSL_AD_DECODE_ERROR;
1481 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1484 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1486 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1495 al=SSL_AD_DECODE_ERROR;
1496 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1499 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1501 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1510 al=SSL_AD_DECODE_ERROR;
1511 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1514 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1516 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1522 #ifndef OPENSSL_NO_RSA
1523 if (alg_a & SSL_aRSA)
1524 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1529 #ifndef OPENSSL_NO_DSA
1530 else if (alg_a & SSL_aDSS)
1531 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1533 /* else anonymous DH, so no certificate or pkey. */
1535 s->session->sess_cert->peer_dh_tmp=dh;
1538 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1540 al=SSL_AD_ILLEGAL_PARAMETER;
1541 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1544 #endif /* !OPENSSL_NO_DH */
1546 #ifndef OPENSSL_NO_ECDH
1547 else if (alg_k & SSL_kEECDH)
1550 const EC_GROUP *group;
1552 if ((ecdh=EC_KEY_new()) == NULL)
1554 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1558 /* Extract elliptic curve parameters and the
1559 * server's ephemeral ECDH public key.
1560 * Keep accumulating lengths of various components in
1561 * param_len and make sure it never exceeds n.
1564 /* XXX: For now we only support named (not generic) curves
1565 * and the ECParameters in this case is just three bytes.
1568 if ((param_len > n) ||
1569 (*p != NAMED_CURVE_TYPE) ||
1570 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1572 al=SSL_AD_INTERNAL_ERROR;
1573 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1577 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1580 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1583 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1585 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1588 EC_GROUP_free(ngroup);
1590 group = EC_KEY_get0_group(ecdh);
1592 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1593 (EC_GROUP_get_degree(group) > 163))
1595 al=SSL_AD_EXPORT_RESTRICTION;
1596 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1602 /* Next, get the encoded ECPoint */
1603 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1604 ((bn_ctx = BN_CTX_new()) == NULL))
1606 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1610 encoded_pt_len = *p; /* length of encoded point */
1612 param_len += (1 + encoded_pt_len);
1613 if ((param_len > n) ||
1614 (EC_POINT_oct2point(group, srvr_ecpoint,
1615 p, encoded_pt_len, bn_ctx) == 0))
1617 al=SSL_AD_DECODE_ERROR;
1618 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1625 /* The ECC/TLS specification does not mention
1626 * the use of DSA to sign ECParameters in the server
1627 * key exchange message. We do support RSA and ECDSA.
1630 #ifndef OPENSSL_NO_RSA
1631 else if (alg_a & SSL_aRSA)
1632 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1634 #ifndef OPENSSL_NO_ECDSA
1635 else if (alg_a & SSL_aECDSA)
1636 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1638 /* else anonymous ECDH, so no certificate or pkey. */
1639 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1640 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1642 BN_CTX_free(bn_ctx);
1644 EC_POINT_free(srvr_ecpoint);
1645 srvr_ecpoint = NULL;
1649 al=SSL_AD_UNEXPECTED_MESSAGE;
1650 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1653 #endif /* !OPENSSL_NO_ECDH */
1656 /* p points to the next byte, there are 'n' bytes left */
1658 /* if it was signed, check the signature */
1661 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1663 int sigalg = tls12_get_sigid(pkey);
1664 /* Should never happen */
1667 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1670 /* Check key type is consistent with signature */
1671 if (sigalg != (int)p[1])
1673 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE);
1674 al=SSL_AD_DECODE_ERROR;
1677 md = tls12_get_hash(p[0]);
1680 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
1681 al=SSL_AD_DECODE_ERROR;
1685 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1695 j=EVP_PKEY_size(pkey);
1697 if ((i != n) || (n > j) || (n <= 0))
1699 /* wrong packet length */
1700 al=SSL_AD_DECODE_ERROR;
1701 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1705 #ifndef OPENSSL_NO_RSA
1706 if (pkey->type == EVP_PKEY_RSA && TLS1_get_version(s) < TLS1_2_VERSION)
1712 for (num=2; num > 0; num--)
1714 EVP_MD_CTX_set_flags(&md_ctx,
1715 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1716 EVP_DigestInit_ex(&md_ctx,(num == 2)
1717 ?s->ctx->md5:s->ctx->sha1, NULL);
1718 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1719 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1720 EVP_DigestUpdate(&md_ctx,param,param_len);
1721 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1725 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1729 al=SSL_AD_DECRYPT_ERROR;
1730 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1736 al=SSL_AD_DECRYPT_ERROR;
1737 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1744 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1745 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1746 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1747 EVP_VerifyUpdate(&md_ctx,param,param_len);
1748 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1751 al=SSL_AD_DECRYPT_ERROR;
1752 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1759 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1760 /* aNULL or kPSK do not need public keys */
1762 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1765 /* still data left over */
1768 al=SSL_AD_DECODE_ERROR;
1769 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1773 EVP_PKEY_free(pkey);
1774 EVP_MD_CTX_cleanup(&md_ctx);
1777 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1779 EVP_PKEY_free(pkey);
1780 #ifndef OPENSSL_NO_RSA
1784 #ifndef OPENSSL_NO_DH
1788 #ifndef OPENSSL_NO_ECDH
1789 BN_CTX_free(bn_ctx);
1790 EC_POINT_free(srvr_ecpoint);
1794 EVP_MD_CTX_cleanup(&md_ctx);
1798 int ssl3_get_certificate_request(SSL *s)
1801 unsigned long n,nc,l;
1802 unsigned int llen, ctype_num,i;
1804 const unsigned char *p,*q;
1806 STACK_OF(X509_NAME) *ca_sk=NULL;
1808 n=s->method->ssl_get_message(s,
1809 SSL3_ST_CR_CERT_REQ_A,
1810 SSL3_ST_CR_CERT_REQ_B,
1815 if (!ok) return((int)n);
1817 s->s3->tmp.cert_req=0;
1819 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1821 s->s3->tmp.reuse_message=1;
1822 /* If we get here we don't need any cached handshake records
1823 * as we wont be doing client auth.
1825 if (s->s3->handshake_buffer)
1827 if (!ssl3_digest_cached_records(s))
1833 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1835 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1836 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1840 /* TLS does not like anon-DH with client cert */
1841 if (s->version > SSL3_VERSION)
1843 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1845 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1846 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1851 p=d=(unsigned char *)s->init_msg;
1853 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1855 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1859 /* get the certificate types */
1861 if (ctype_num > SSL3_CT_NUMBER)
1862 ctype_num=SSL3_CT_NUMBER;
1863 for (i=0; i<ctype_num; i++)
1864 s->s3->tmp.ctype[i]= p[i];
1866 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1869 /* Check we have enough room for signature algorithms and
1870 * following length value.
1872 if ((unsigned long)(p - d + llen + 2) > n)
1874 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1875 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
1878 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
1880 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1881 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
1887 /* get the CA RDNs */
1892 out=fopen("/tmp/vsign.der","w");
1893 fwrite(p,1,llen,out);
1898 if ((unsigned long)(p - d + llen) != n)
1900 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1901 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1905 for (nc=0; nc<llen; )
1908 if ((l+nc+2) > llen)
1910 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1911 goto cont; /* netscape bugs */
1912 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1913 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1919 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1921 /* If netscape tolerance is on, ignore errors */
1922 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1926 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1927 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1934 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1935 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1938 if (!sk_X509_NAME_push(ca_sk,xn))
1940 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1954 /* we should setup a certificate to return.... */
1955 s->s3->tmp.cert_req=1;
1956 s->s3->tmp.ctype_num=ctype_num;
1957 if (s->s3->tmp.ca_names != NULL)
1958 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1959 s->s3->tmp.ca_names=ca_sk;
1964 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1968 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1970 return(X509_NAME_cmp(*a,*b));
1972 #ifndef OPENSSL_NO_TLSEXT
1973 int ssl3_get_new_session_ticket(SSL *s)
1975 int ok,al,ret=0, ticklen;
1977 const unsigned char *p;
1980 n=s->method->ssl_get_message(s,
1981 SSL3_ST_CR_SESSION_TICKET_A,
1982 SSL3_ST_CR_SESSION_TICKET_B,
1990 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1992 s->s3->tmp.reuse_message=1;
1995 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1997 al=SSL_AD_UNEXPECTED_MESSAGE;
1998 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
2003 /* need at least ticket_lifetime_hint + ticket length */
2004 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
2005 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2009 p=d=(unsigned char *)s->init_msg;
2010 n2l(p, s->session->tlsext_tick_lifetime_hint);
2012 /* ticket_lifetime_hint + ticket_length + ticket */
2013 if (ticklen + 6 != n)
2015 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
2016 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2019 if (s->session->tlsext_tick)
2021 OPENSSL_free(s->session->tlsext_tick);
2022 s->session->tlsext_ticklen = 0;
2024 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2025 if (!s->session->tlsext_tick)
2027 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2030 memcpy(s->session->tlsext_tick, p, ticklen);
2031 s->session->tlsext_ticklen = ticklen;
2032 /* There are two ways to detect a resumed ticket sesion.
2033 * One is to set an appropriate session ID and then the server
2034 * must return a match in ServerHello. This allows the normal
2035 * client session ID matching to work and we know much
2036 * earlier that the ticket has been accepted.
2038 * The other way is to set zero length session ID when the
2039 * ticket is presented and rely on the handshake to determine
2040 * session resumption.
2042 * We choose the former approach because this fits in with
2043 * assumptions elsewhere in OpenSSL. The session ID is set
2044 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2047 EVP_Digest(p, ticklen,
2048 s->session->session_id, &s->session->session_id_length,
2049 #ifndef OPENSSL_NO_SHA256
2050 EVP_sha256(), NULL);
2057 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2062 int ssl3_get_cert_status(SSL *s)
2065 unsigned long resplen,n;
2066 const unsigned char *p;
2068 n=s->method->ssl_get_message(s,
2069 SSL3_ST_CR_CERT_STATUS_A,
2070 SSL3_ST_CR_CERT_STATUS_B,
2071 SSL3_MT_CERTIFICATE_STATUS,
2075 if (!ok) return((int)n);
2078 /* need at least status type + length */
2079 al = SSL_AD_DECODE_ERROR;
2080 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2083 p = (unsigned char *)s->init_msg;
2084 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2086 al = SSL_AD_DECODE_ERROR;
2087 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2091 if (resplen + 4 != n)
2093 al = SSL_AD_DECODE_ERROR;
2094 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2097 if (s->tlsext_ocsp_resp)
2098 OPENSSL_free(s->tlsext_ocsp_resp);
2099 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2100 if (!s->tlsext_ocsp_resp)
2102 al = SSL_AD_INTERNAL_ERROR;
2103 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2106 s->tlsext_ocsp_resplen = resplen;
2107 if (s->ctx->tlsext_status_cb)
2110 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2113 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2114 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2119 al = SSL_AD_INTERNAL_ERROR;
2120 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2126 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2131 int ssl3_get_server_done(SSL *s)
2136 n=s->method->ssl_get_message(s,
2137 SSL3_ST_CR_SRVR_DONE_A,
2138 SSL3_ST_CR_SRVR_DONE_B,
2139 SSL3_MT_SERVER_DONE,
2140 30, /* should be very small, like 0 :-) */
2143 if (!ok) return((int)n);
2146 /* should contain no data */
2147 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2148 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2156 int ssl3_send_client_key_exchange(SSL *s)
2158 unsigned char *p,*d;
2160 unsigned long alg_k;
2161 #ifndef OPENSSL_NO_RSA
2163 EVP_PKEY *pkey=NULL;
2165 #ifndef OPENSSL_NO_KRB5
2167 #endif /* OPENSSL_NO_KRB5 */
2168 #ifndef OPENSSL_NO_ECDH
2169 EC_KEY *clnt_ecdh = NULL;
2170 const EC_POINT *srvr_ecpoint = NULL;
2171 EVP_PKEY *srvr_pub_pkey = NULL;
2172 unsigned char *encodedPoint = NULL;
2173 int encoded_pt_len = 0;
2174 BN_CTX * bn_ctx = NULL;
2177 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2179 d=(unsigned char *)s->init_buf->data;
2182 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2184 /* Fool emacs indentation */
2186 #ifndef OPENSSL_NO_RSA
2187 else if (alg_k & SSL_kRSA)
2190 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2192 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2193 rsa=s->session->sess_cert->peer_rsa_tmp;
2196 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2197 if ((pkey == NULL) ||
2198 (pkey->type != EVP_PKEY_RSA) ||
2199 (pkey->pkey.rsa == NULL))
2201 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2205 EVP_PKEY_free(pkey);
2208 tmp_buf[0]=s->client_version>>8;
2209 tmp_buf[1]=s->client_version&0xff;
2210 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2213 s->session->master_key_length=sizeof tmp_buf;
2216 /* Fix buf for TLS and beyond */
2217 if (s->version > SSL3_VERSION)
2219 n=RSA_public_encrypt(sizeof tmp_buf,
2220 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2222 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2223 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2227 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2231 /* Fix buf for TLS and beyond */
2232 if (s->version > SSL3_VERSION)
2238 s->session->master_key_length=
2239 s->method->ssl3_enc->generate_master_secret(s,
2240 s->session->master_key,
2241 tmp_buf,sizeof tmp_buf);
2242 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2245 #ifndef OPENSSL_NO_KRB5
2246 else if (alg_k & SSL_kKRB5)
2248 krb5_error_code krb5rc;
2249 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2250 /* krb5_data krb5_ap_req; */
2251 krb5_data *enc_ticket;
2252 krb5_data authenticator, *authp = NULL;
2253 EVP_CIPHER_CTX ciph_ctx;
2254 const EVP_CIPHER *enc = NULL;
2255 unsigned char iv[EVP_MAX_IV_LENGTH];
2256 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2257 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2258 + EVP_MAX_IV_LENGTH];
2259 int padl, outl = sizeof(epms);
2261 EVP_CIPHER_CTX_init(&ciph_ctx);
2264 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2266 #endif /* KSSL_DEBUG */
2270 if (KRB5SENDAUTH) authp = &authenticator;
2271 #endif /* KRB5SENDAUTH */
2273 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2275 enc = kssl_map_enc(kssl_ctx->enctype);
2280 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2281 if (krb5rc && kssl_err.text)
2282 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2284 #endif /* KSSL_DEBUG */
2288 ssl3_send_alert(s,SSL3_AL_FATAL,
2289 SSL_AD_HANDSHAKE_FAILURE);
2290 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2295 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2296 ** in place of RFC 2712 KerberosWrapper, as in:
2298 ** Send ticket (copy to *p, set n = length)
2299 ** n = krb5_ap_req.length;
2300 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2301 ** if (krb5_ap_req.data)
2302 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2304 ** Now using real RFC 2712 KerberosWrapper
2305 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2306 ** Note: 2712 "opaque" types are here replaced
2307 ** with a 2-byte length followed by the value.
2309 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2310 ** Where "xx xx" = length bytes. Shown here with
2311 ** optional authenticator omitted.
2314 /* KerberosWrapper.Ticket */
2315 s2n(enc_ticket->length,p);
2316 memcpy(p, enc_ticket->data, enc_ticket->length);
2317 p+= enc_ticket->length;
2318 n = enc_ticket->length + 2;
2320 /* KerberosWrapper.Authenticator */
2321 if (authp && authp->length)
2323 s2n(authp->length,p);
2324 memcpy(p, authp->data, authp->length);
2326 n+= authp->length + 2;
2334 s2n(0,p);/* null authenticator length */
2338 tmp_buf[0]=s->client_version>>8;
2339 tmp_buf[1]=s->client_version&0xff;
2340 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2343 /* 20010420 VRS. Tried it this way; failed.
2344 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2345 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2346 ** kssl_ctx->length);
2347 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2350 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2351 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2353 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2355 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2357 if (outl > (int)sizeof epms)
2359 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2362 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2364 /* KerberosWrapper.EncryptedPreMasterSecret */
2366 memcpy(p, epms, outl);
2370 s->session->master_key_length=
2371 s->method->ssl3_enc->generate_master_secret(s,
2372 s->session->master_key,
2373 tmp_buf, sizeof tmp_buf);
2375 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2376 OPENSSL_cleanse(epms, outl);
2379 #ifndef OPENSSL_NO_DH
2380 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2382 DH *dh_srvr,*dh_clnt;
2384 if (s->session->sess_cert == NULL)
2386 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2387 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2391 if (s->session->sess_cert->peer_dh_tmp != NULL)
2392 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2395 /* we get them from the cert */
2396 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2397 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2401 /* generate a new random key */
2402 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2404 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2407 if (!DH_generate_key(dh_clnt))
2409 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2414 /* use the 'p' output buffer for the DH key, but
2415 * make sure to clear it out afterwards */
2417 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2421 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2426 /* generate master key from the result */
2427 s->session->master_key_length=
2428 s->method->ssl3_enc->generate_master_secret(s,
2429 s->session->master_key,p,n);
2433 /* send off the data */
2434 n=BN_num_bytes(dh_clnt->pub_key);
2436 BN_bn2bin(dh_clnt->pub_key,p);
2441 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2445 #ifndef OPENSSL_NO_ECDH
2446 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2448 const EC_GROUP *srvr_group = NULL;
2450 int ecdh_clnt_cert = 0;
2453 /* Did we send out the client's
2454 * ECDH share for use in premaster
2455 * computation as part of client certificate?
2456 * If so, set ecdh_clnt_cert to 1.
2458 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2460 /* XXX: For now, we do not support client
2461 * authentication using ECDH certificates.
2462 * To add such support, one needs to add
2463 * code that checks for appropriate
2464 * conditions and sets ecdh_clnt_cert to 1.
2465 * For example, the cert have an ECC
2466 * key on the same curve as the server's
2467 * and the key should be authorized for
2470 * One also needs to add code in ssl3_connect
2471 * to skip sending the certificate verify
2474 * if ((s->cert->key->privatekey != NULL) &&
2475 * (s->cert->key->privatekey->type ==
2476 * EVP_PKEY_EC) && ...)
2477 * ecdh_clnt_cert = 1;
2481 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2483 tkey = s->session->sess_cert->peer_ecdh_tmp;
2487 /* Get the Server Public Key from Cert */
2488 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2489 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2490 if ((srvr_pub_pkey == NULL) ||
2491 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2492 (srvr_pub_pkey->pkey.ec == NULL))
2494 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2495 ERR_R_INTERNAL_ERROR);
2499 tkey = srvr_pub_pkey->pkey.ec;
2502 srvr_group = EC_KEY_get0_group(tkey);
2503 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2505 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2507 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2508 ERR_R_INTERNAL_ERROR);
2512 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2514 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2518 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2520 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2525 /* Reuse key info from our certificate
2526 * We only need our private key to perform
2527 * the ECDH computation.
2529 const BIGNUM *priv_key;
2530 tkey = s->cert->key->privatekey->pkey.ec;
2531 priv_key = EC_KEY_get0_private_key(tkey);
2532 if (priv_key == NULL)
2534 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2537 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2539 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2545 /* Generate a new ECDH key pair */
2546 if (!(EC_KEY_generate_key(clnt_ecdh)))
2548 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2553 /* use the 'p' output buffer for the ECDH key, but
2554 * make sure to clear it out afterwards
2557 field_size = EC_GROUP_get_degree(srvr_group);
2558 if (field_size <= 0)
2560 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2564 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2567 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2572 /* generate master key from the result */
2573 s->session->master_key_length = s->method->ssl3_enc \
2574 -> generate_master_secret(s,
2575 s->session->master_key,
2578 memset(p, 0, n); /* clean up */
2582 /* Send empty client key exch message */
2587 /* First check the size of encoding and
2588 * allocate memory accordingly.
2591 EC_POINT_point2oct(srvr_group,
2592 EC_KEY_get0_public_key(clnt_ecdh),
2593 POINT_CONVERSION_UNCOMPRESSED,
2596 encodedPoint = (unsigned char *)
2597 OPENSSL_malloc(encoded_pt_len *
2598 sizeof(unsigned char));
2599 bn_ctx = BN_CTX_new();
2600 if ((encodedPoint == NULL) ||
2603 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2607 /* Encode the public key */
2608 n = EC_POINT_point2oct(srvr_group,
2609 EC_KEY_get0_public_key(clnt_ecdh),
2610 POINT_CONVERSION_UNCOMPRESSED,
2611 encodedPoint, encoded_pt_len, bn_ctx);
2613 *p = n; /* length of encoded point */
2614 /* Encoded point will be copied here */
2616 /* copy the point */
2617 memcpy((unsigned char *)p, encodedPoint, n);
2618 /* increment n to account for length field */
2622 /* Free allocated memory */
2623 BN_CTX_free(bn_ctx);
2624 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2625 if (clnt_ecdh != NULL)
2626 EC_KEY_free(clnt_ecdh);
2627 EVP_PKEY_free(srvr_pub_pkey);
2629 #endif /* !OPENSSL_NO_ECDH */
2630 else if (alg_k & SSL_kGOST)
2632 /* GOST key exchange message creation */
2633 EVP_PKEY_CTX *pkey_ctx;
2636 unsigned int md_len;
2638 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2639 EVP_MD_CTX *ukm_hash;
2642 /* Get server sertificate PKEY and create ctx from it */
2643 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2645 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2647 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2651 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2652 /* If we have send a certificate, and certificate key
2654 * parameters match those of server certificate, use
2655 * certificate key for key exchange
2658 /* Otherwise, generate ephemeral key pair */
2660 EVP_PKEY_encrypt_init(pkey_ctx);
2661 /* Generate session key */
2662 RAND_bytes(premaster_secret,32);
2663 /* If we have client certificate, use its secret as peer key */
2664 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2665 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2666 /* If there was an error - just ignore it. Ephemeral key
2672 /* Compute shared IV and store it in algorithm-specific
2674 ukm_hash = EVP_MD_CTX_create();
2675 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2676 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2677 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2678 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2679 EVP_MD_CTX_destroy(ukm_hash);
2680 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2682 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2686 /* Make GOST keytransport blob message */
2687 /*Encapsulate it into sequence */
2688 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2690 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2691 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2698 *(p++)= msglen & 0xff;
2703 *(p++)= msglen & 0xff;
2706 memcpy(p, tmp, msglen);
2707 /* Check if pubkey from client certificate was used */
2708 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2710 /* Set flag "skip certificate verify" */
2711 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2713 EVP_PKEY_CTX_free(pkey_ctx);
2714 s->session->master_key_length=
2715 s->method->ssl3_enc->generate_master_secret(s,
2716 s->session->master_key,premaster_secret,32);
2717 EVP_PKEY_free(pub_key);
2720 #ifndef OPENSSL_NO_SRP
2721 else if (alg_k & SSL_kSRP)
2723 if (s->srp_ctx.A != NULL)
2725 /* send off the data */
2726 n=BN_num_bytes(s->srp_ctx.A);
2728 BN_bn2bin(s->srp_ctx.A,p);
2733 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2736 if (s->session->srp_username != NULL)
2737 OPENSSL_free(s->session->srp_username);
2738 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2739 if (s->session->srp_username == NULL)
2741 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2742 ERR_R_MALLOC_FAILURE);
2746 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2748 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2753 #ifndef OPENSSL_NO_PSK
2754 else if (alg_k & SSL_kPSK)
2756 char identity[PSK_MAX_IDENTITY_LEN];
2757 unsigned char *t = NULL;
2758 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2759 unsigned int pre_ms_len = 0, psk_len = 0;
2763 if (s->psk_client_callback == NULL)
2765 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2766 SSL_R_PSK_NO_CLIENT_CB);
2770 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2771 identity, PSK_MAX_IDENTITY_LEN,
2772 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2773 if (psk_len > PSK_MAX_PSK_LEN)
2775 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2776 ERR_R_INTERNAL_ERROR);
2779 else if (psk_len == 0)
2781 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2782 SSL_R_PSK_IDENTITY_NOT_FOUND);
2786 /* create PSK pre_master_secret */
2787 pre_ms_len = 2+psk_len+2+psk_len;
2789 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2791 memset(t, 0, psk_len);
2795 if (s->session->psk_identity_hint != NULL)
2796 OPENSSL_free(s->session->psk_identity_hint);
2797 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2798 if (s->ctx->psk_identity_hint != NULL &&
2799 s->session->psk_identity_hint == NULL)
2801 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2802 ERR_R_MALLOC_FAILURE);
2806 if (s->session->psk_identity != NULL)
2807 OPENSSL_free(s->session->psk_identity);
2808 s->session->psk_identity = BUF_strdup(identity);
2809 if (s->session->psk_identity == NULL)
2811 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2812 ERR_R_MALLOC_FAILURE);
2816 s->session->master_key_length =
2817 s->method->ssl3_enc->generate_master_secret(s,
2818 s->session->master_key,
2819 psk_or_pre_ms, pre_ms_len);
2820 n = strlen(identity);
2822 memcpy(p, identity, n);
2826 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2827 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2830 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2837 ssl3_send_alert(s, SSL3_AL_FATAL,
2838 SSL_AD_HANDSHAKE_FAILURE);
2839 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2840 ERR_R_INTERNAL_ERROR);
2844 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2847 s->state=SSL3_ST_CW_KEY_EXCH_B;
2848 /* number of bytes to write */
2853 /* SSL3_ST_CW_KEY_EXCH_B */
2854 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2856 #ifndef OPENSSL_NO_ECDH
2857 BN_CTX_free(bn_ctx);
2858 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2859 if (clnt_ecdh != NULL)
2860 EC_KEY_free(clnt_ecdh);
2861 EVP_PKEY_free(srvr_pub_pkey);
2866 int ssl3_send_client_verify(SSL *s)
2868 unsigned char *p,*d;
2869 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2871 EVP_PKEY_CTX *pctx=NULL;
2877 EVP_MD_CTX_init(&mctx);
2879 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2881 d=(unsigned char *)s->init_buf->data;
2883 pkey=s->cert->key->privatekey;
2884 /* Create context from key and test if sha1 is allowed as digest */
2885 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2886 EVP_PKEY_sign_init(pctx);
2887 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2889 if (TLS1_get_version(s) < TLS1_2_VERSION)
2890 s->method->ssl3_enc->cert_verify_mac(s,
2892 &(data[MD5_DIGEST_LENGTH]));
2898 /* For TLS v1.2 send signature algorithm and signature
2899 * using agreed digest and cached handshake records.
2901 if (TLS1_get_version(s) >= TLS1_2_VERSION)
2905 const EVP_MD *md = s->cert->key->digest;
2906 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
2908 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
2910 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2911 ERR_R_INTERNAL_ERROR);
2916 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
2919 if (!EVP_SignInit_ex(&mctx, md, NULL)
2920 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
2921 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
2923 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2929 if (!ssl3_digest_cached_records(s))
2933 #ifndef OPENSSL_NO_RSA
2934 if (pkey->type == EVP_PKEY_RSA)
2936 s->method->ssl3_enc->cert_verify_mac(s,
2939 if (RSA_sign(NID_md5_sha1, data,
2940 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2941 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2943 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2951 #ifndef OPENSSL_NO_DSA
2952 if (pkey->type == EVP_PKEY_DSA)
2954 if (!DSA_sign(pkey->save_type,
2955 &(data[MD5_DIGEST_LENGTH]),
2956 SHA_DIGEST_LENGTH,&(p[2]),
2957 (unsigned int *)&j,pkey->pkey.dsa))
2959 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2967 #ifndef OPENSSL_NO_ECDSA
2968 if (pkey->type == EVP_PKEY_EC)
2970 if (!ECDSA_sign(pkey->save_type,
2971 &(data[MD5_DIGEST_LENGTH]),
2972 SHA_DIGEST_LENGTH,&(p[2]),
2973 (unsigned int *)&j,pkey->pkey.ec))
2975 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2984 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
2986 unsigned char signbuf[64];
2989 s->method->ssl3_enc->cert_verify_mac(s,
2990 NID_id_GostR3411_94,
2992 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
2993 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2994 ERR_R_INTERNAL_ERROR);
2997 for (i=63,j=0; i>=0; j++, i--) {
3005 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
3008 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
3011 s->state=SSL3_ST_CW_CERT_VRFY_B;
3012 s->init_num=(int)n+4;
3015 EVP_MD_CTX_cleanup(&mctx);
3016 EVP_PKEY_CTX_free(pctx);
3017 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3019 EVP_MD_CTX_cleanup(&mctx);
3020 EVP_PKEY_CTX_free(pctx);
3024 int ssl3_send_client_certificate(SSL *s)
3027 EVP_PKEY *pkey=NULL;
3031 if (s->state == SSL3_ST_CW_CERT_A)
3033 if ((s->cert == NULL) ||
3034 (s->cert->key->x509 == NULL) ||
3035 (s->cert->key->privatekey == NULL))
3036 s->state=SSL3_ST_CW_CERT_B;
3038 s->state=SSL3_ST_CW_CERT_C;
3041 /* We need to get a client cert */
3042 if (s->state == SSL3_ST_CW_CERT_B)
3044 /* If we get an error, we need to
3045 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3046 * We then get retied later */
3048 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3051 s->rwstate=SSL_X509_LOOKUP;
3054 s->rwstate=SSL_NOTHING;
3055 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3057 s->state=SSL3_ST_CW_CERT_B;
3058 if ( !SSL_use_certificate(s,x509) ||
3059 !SSL_use_PrivateKey(s,pkey))
3065 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3068 if (x509 != NULL) X509_free(x509);
3069 if (pkey != NULL) EVP_PKEY_free(pkey);
3072 if (s->version == SSL3_VERSION)
3074 s->s3->tmp.cert_req=0;
3075 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3080 s->s3->tmp.cert_req=2;
3084 /* Ok, we have a cert */
3085 s->state=SSL3_ST_CW_CERT_C;
3088 if (s->state == SSL3_ST_CW_CERT_C)
3090 s->state=SSL3_ST_CW_CERT_D;
3091 l=ssl3_output_cert_chain(s,
3092 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
3096 /* SSL3_ST_CW_CERT_D */
3097 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3100 #define has_bits(i,m) (((i)&(m)) == (m))
3102 int ssl3_check_cert_and_algorithm(SSL *s)
3106 EVP_PKEY *pkey=NULL;
3108 #ifndef OPENSSL_NO_RSA
3111 #ifndef OPENSSL_NO_DH
3115 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3116 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3118 /* we don't have a certificate */
3119 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3122 sc=s->session->sess_cert;
3125 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3129 #ifndef OPENSSL_NO_RSA
3130 rsa=s->session->sess_cert->peer_rsa_tmp;
3132 #ifndef OPENSSL_NO_DH
3133 dh=s->session->sess_cert->peer_dh_tmp;
3136 /* This is the passed certificate */
3138 idx=sc->peer_cert_type;
3139 #ifndef OPENSSL_NO_ECDH
3140 if (idx == SSL_PKEY_ECC)
3142 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3144 { /* check failed */
3145 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3154 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3155 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3156 EVP_PKEY_free(pkey);
3159 /* Check that we have a certificate if we require one */
3160 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3162 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3165 #ifndef OPENSSL_NO_DSA
3166 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3168 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3172 #ifndef OPENSSL_NO_RSA
3173 if ((alg_k & SSL_kRSA) &&
3174 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3176 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3180 #ifndef OPENSSL_NO_DH
3181 if ((alg_k & SSL_kEDH) &&
3182 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3184 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3187 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3189 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3192 #ifndef OPENSSL_NO_DSA
3193 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3195 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3201 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3203 #ifndef OPENSSL_NO_RSA
3204 if (alg_k & SSL_kRSA)
3207 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3209 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3215 #ifndef OPENSSL_NO_DH
3216 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3219 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3221 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3228 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3234 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3239 /* Check to see if handshake is full or resumed. Usually this is just a
3240 * case of checking to see if a cache hit has occurred. In the case of
3241 * session tickets we have to check the next message to be sure.
3244 #ifndef OPENSSL_NO_TLSEXT
3245 int ssl3_check_finished(SSL *s)
3249 /* If we have no ticket it cannot be a resumed session. */
3250 if (!s->session->tlsext_tick)
3252 /* this function is called when we really expect a Certificate
3253 * message, so permit appropriate message length */
3254 n=s->method->ssl_get_message(s,
3260 if (!ok) return((int)n);
3261 s->s3->tmp.reuse_message = 1;
3262 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3263 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3270 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3273 #ifndef OPENSSL_NO_ENGINE
3274 if (s->ctx->client_cert_engine)
3276 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3277 SSL_get_client_CA_list(s),
3278 px509, ppkey, NULL, NULL, NULL);
3283 if (s->ctx->client_cert_cb)
3284 i = s->ctx->client_cert_cb(s,px509,ppkey);