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 <openssl/crypto.h>
153 #include "ssl_locl.h"
154 #include "kssl_lcl.h"
155 #include <openssl/buffer.h>
156 #include <openssl/rand.h>
157 #include <openssl/objects.h>
158 #include <openssl/evp.h>
159 #include <openssl/md5.h>
161 #include <openssl/fips.h>
163 #ifndef OPENSSL_NO_DH
164 #include <openssl/dh.h>
166 #include <openssl/bn.h>
167 #ifndef OPENSSL_NO_ENGINE
168 #include <openssl/engine.h>
171 static const SSL_METHOD *ssl3_get_client_method(int ver);
172 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
174 static const SSL_METHOD *ssl3_get_client_method(int ver)
176 if (ver == SSL3_VERSION)
177 return(SSLv3_client_method());
182 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
183 ssl_undefined_function,
185 ssl3_get_client_method)
187 int ssl3_connect(SSL *s)
190 unsigned long Time=(unsigned long)time(NULL);
191 void (*cb)(const SSL *ssl,int type,int val)=NULL;
193 int new_state,state,skip=0;
195 RAND_add(&Time,sizeof(Time),0);
199 if (s->info_callback != NULL)
201 else if (s->ctx->info_callback != NULL)
202 cb=s->ctx->info_callback;
205 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
213 case SSL_ST_RENEGOTIATE:
215 s->state=SSL_ST_CONNECT;
216 s->ctx->stats.sess_connect_renegotiate++;
220 case SSL_ST_BEFORE|SSL_ST_CONNECT:
221 case SSL_ST_OK|SSL_ST_CONNECT:
224 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
226 if ((s->version & 0xff00 ) != 0x0300)
228 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
233 /* s->version=SSL3_VERSION; */
234 s->type=SSL_ST_CONNECT;
236 if (s->init_buf == NULL)
238 if ((buf=BUF_MEM_new()) == NULL)
243 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
252 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
254 /* setup buffing BIO */
255 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
257 /* don't push the buffering BIO quite yet */
259 ssl3_init_finished_mac(s);
261 s->state=SSL3_ST_CW_CLNT_HELLO_A;
262 s->ctx->stats.sess_connect++;
266 case SSL3_ST_CW_CLNT_HELLO_A:
267 case SSL3_ST_CW_CLNT_HELLO_B:
270 ret=ssl3_client_hello(s);
271 if (ret <= 0) goto end;
272 s->state=SSL3_ST_CR_SRVR_HELLO_A;
275 /* turn on buffering for the next lot of output */
276 if (s->bbio != s->wbio)
277 s->wbio=BIO_push(s->bbio,s->wbio);
281 case SSL3_ST_CR_SRVR_HELLO_A:
282 case SSL3_ST_CR_SRVR_HELLO_B:
283 ret=ssl3_get_server_hello(s);
284 #ifndef OPENSSL_NO_SRP
285 if ((ret == 0) && (s->s3->warn_alert == SSL_AD_MISSING_SRP_USERNAME))
287 if (!SRP_have_to_put_srp_username(s))
289 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_MISSING_SRP_USERNAME);
290 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_USER_CANCELLED);
293 s->state=SSL3_ST_CW_CLNT_HELLO_A;
294 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
298 if (ret <= 0) goto end;
302 s->state=SSL3_ST_CR_FINISHED_A;
303 #ifndef OPENSSL_NO_TLSEXT
304 if (s->tlsext_ticket_expected)
306 /* receive renewed session ticket */
307 s->state=SSL3_ST_CR_SESSION_TICKET_A;
312 s->state=SSL3_ST_CR_CERT_A;
316 case SSL3_ST_CR_CERT_A:
317 case SSL3_ST_CR_CERT_B:
318 #ifndef OPENSSL_NO_TLSEXT
319 ret=ssl3_check_finished(s);
320 if (ret <= 0) goto end;
324 if (s->tlsext_ticket_expected)
325 s->state=SSL3_ST_CR_SESSION_TICKET_A;
327 s->state=SSL3_ST_CR_FINISHED_A;
332 /* Check if it is anon DH/ECDH */
334 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
335 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
337 ret=ssl3_get_server_certificate(s);
338 if (ret <= 0) goto end;
339 #ifndef OPENSSL_NO_TLSEXT
340 if (s->tlsext_status_expected)
341 s->state=SSL3_ST_CR_CERT_STATUS_A;
343 s->state=SSL3_ST_CR_KEY_EXCH_A;
348 s->state=SSL3_ST_CR_KEY_EXCH_A;
355 s->state=SSL3_ST_CR_KEY_EXCH_A;
360 case SSL3_ST_CR_KEY_EXCH_A:
361 case SSL3_ST_CR_KEY_EXCH_B:
362 ret=ssl3_get_key_exchange(s);
363 if (ret <= 0) goto end;
364 s->state=SSL3_ST_CR_CERT_REQ_A;
367 /* at this point we check that we have the
368 * required stuff from the server */
369 if (!ssl3_check_cert_and_algorithm(s))
376 case SSL3_ST_CR_CERT_REQ_A:
377 case SSL3_ST_CR_CERT_REQ_B:
378 ret=ssl3_get_certificate_request(s);
379 if (ret <= 0) goto end;
380 s->state=SSL3_ST_CR_SRVR_DONE_A;
384 case SSL3_ST_CR_SRVR_DONE_A:
385 case SSL3_ST_CR_SRVR_DONE_B:
386 ret=ssl3_get_server_done(s);
387 if (ret <= 0) goto end;
388 #ifndef OPENSSL_NO_SRP
389 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP)
391 if ((ret = SRP_Calc_A_param(s))<=0)
393 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SRP_A_CALC);
394 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
399 if (s->s3->tmp.cert_req)
400 s->state=SSL3_ST_CW_CERT_A;
402 s->state=SSL3_ST_CW_KEY_EXCH_A;
407 case SSL3_ST_CW_CERT_A:
408 case SSL3_ST_CW_CERT_B:
409 case SSL3_ST_CW_CERT_C:
410 case SSL3_ST_CW_CERT_D:
411 ret=ssl3_send_client_certificate(s);
412 if (ret <= 0) goto end;
413 s->state=SSL3_ST_CW_KEY_EXCH_A;
417 case SSL3_ST_CW_KEY_EXCH_A:
418 case SSL3_ST_CW_KEY_EXCH_B:
419 ret=ssl3_send_client_key_exchange(s);
420 if (ret <= 0) goto end;
421 /* EAY EAY EAY need to check for DH fix cert
423 /* For TLS, cert_req is set to 2, so a cert chain
424 * of nothing is sent, but no verify packet is sent */
425 /* XXX: For now, we do not support client
426 * authentication in ECDH cipher suites with
427 * ECDH (rather than ECDSA) certificates.
428 * We need to skip the certificate verify
429 * message when client's ECDH public key is sent
430 * inside the client certificate.
432 if (s->s3->tmp.cert_req == 1)
434 s->state=SSL3_ST_CW_CERT_VRFY_A;
438 s->state=SSL3_ST_CW_CHANGE_A;
439 s->s3->change_cipher_spec=0;
441 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
443 s->state=SSL3_ST_CW_CHANGE_A;
444 s->s3->change_cipher_spec=0;
450 case SSL3_ST_CW_CERT_VRFY_A:
451 case SSL3_ST_CW_CERT_VRFY_B:
452 ret=ssl3_send_client_verify(s);
453 if (ret <= 0) goto end;
454 s->state=SSL3_ST_CW_CHANGE_A;
456 s->s3->change_cipher_spec=0;
459 case SSL3_ST_CW_CHANGE_A:
460 case SSL3_ST_CW_CHANGE_B:
461 ret=ssl3_send_change_cipher_spec(s,
462 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
463 if (ret <= 0) goto end;
465 #if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
466 s->state=SSL3_ST_CW_FINISHED_A;
468 if (s->next_proto_negotiated)
469 s->state=SSL3_ST_CW_NEXT_PROTO_A;
471 s->state=SSL3_ST_CW_FINISHED_A;
475 s->session->cipher=s->s3->tmp.new_cipher;
476 #ifdef OPENSSL_NO_COMP
477 s->session->compress_meth=0;
479 if (s->s3->tmp.new_compression == NULL)
480 s->session->compress_meth=0;
482 s->session->compress_meth=
483 s->s3->tmp.new_compression->id;
485 if (!s->method->ssl3_enc->setup_key_block(s))
491 if (!s->method->ssl3_enc->change_cipher_state(s,
492 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
500 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
501 case SSL3_ST_CW_NEXT_PROTO_A:
502 case SSL3_ST_CW_NEXT_PROTO_B:
503 ret=ssl3_send_next_proto(s);
504 if (ret <= 0) goto end;
505 s->state=SSL3_ST_CW_FINISHED_A;
509 case SSL3_ST_CW_FINISHED_A:
510 case SSL3_ST_CW_FINISHED_B:
511 ret=ssl3_send_finished(s,
512 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
513 s->method->ssl3_enc->client_finished_label,
514 s->method->ssl3_enc->client_finished_label_len);
515 if (ret <= 0) goto end;
516 s->state=SSL3_ST_CW_FLUSH;
519 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
522 s->s3->tmp.next_state=SSL_ST_OK;
523 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
526 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
527 s->s3->delay_buf_pop_ret=0;
532 #ifndef OPENSSL_NO_TLSEXT
533 /* Allow NewSessionTicket if ticket expected */
534 if (s->tlsext_ticket_expected)
535 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
539 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
544 #ifndef OPENSSL_NO_TLSEXT
545 case SSL3_ST_CR_SESSION_TICKET_A:
546 case SSL3_ST_CR_SESSION_TICKET_B:
547 ret=ssl3_get_new_session_ticket(s);
548 if (ret <= 0) goto end;
549 s->state=SSL3_ST_CR_FINISHED_A;
553 case SSL3_ST_CR_CERT_STATUS_A:
554 case SSL3_ST_CR_CERT_STATUS_B:
555 ret=ssl3_get_cert_status(s);
556 if (ret <= 0) goto end;
557 s->state=SSL3_ST_CR_KEY_EXCH_A;
562 case SSL3_ST_CR_FINISHED_A:
563 case SSL3_ST_CR_FINISHED_B:
565 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
566 SSL3_ST_CR_FINISHED_B);
567 if (ret <= 0) goto end;
570 s->state=SSL3_ST_CW_CHANGE_A;
576 case SSL3_ST_CW_FLUSH:
577 s->rwstate=SSL_WRITING;
578 if (BIO_flush(s->wbio) <= 0)
583 s->rwstate=SSL_NOTHING;
584 s->state=s->s3->tmp.next_state;
588 /* clean a few things up */
589 ssl3_cleanup_key_block(s);
591 if (s->init_buf != NULL)
593 BUF_MEM_free(s->init_buf);
597 /* If we are not 'joining' the last two packets,
598 * remove the buffering now */
599 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
600 ssl_free_wbio_buffer(s);
601 /* else do it later in ssl3_write */
607 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
608 if (s->hit) s->ctx->stats.sess_hit++;
612 s->handshake_func=ssl3_connect;
613 s->ctx->stats.sess_connect_good++;
615 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
621 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
627 /* did we do anything */
628 if (!s->s3->tmp.reuse_message && !skip)
632 if ((ret=BIO_flush(s->wbio)) <= 0)
636 if ((cb != NULL) && (s->state != state))
640 cb(s,SSL_CB_CONNECT_LOOP,1);
651 cb(s,SSL_CB_CONNECT_EXIT,ret);
656 int ssl3_client_hello(SSL *s)
661 unsigned long Time,l;
662 #ifndef OPENSSL_NO_COMP
667 buf=(unsigned char *)s->init_buf->data;
668 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
670 SSL_SESSION *sess = s->session;
671 if ((sess == NULL) ||
672 (sess->ssl_version != s->version) ||
673 #ifdef OPENSSL_NO_TLSEXT
674 !sess->session_id_length ||
676 (!sess->session_id_length && !sess->tlsext_tick) ||
678 (sess->not_resumable))
680 if (!ssl_get_new_session(s,0))
683 /* else use the pre-loaded session */
685 p=s->s3->client_random;
686 Time=(unsigned long)time(NULL); /* Time */
688 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
691 /* Do the message type and length last */
694 *(p++)=s->version>>8;
695 *(p++)=s->version&0xff;
696 s->client_version=s->version;
699 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
706 i=s->session->session_id_length;
710 if (i > (int)sizeof(s->session->session_id))
712 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
715 memcpy(p,s->session->session_id,i);
719 /* Ciphers supported */
720 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
723 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
730 #ifdef OPENSSL_NO_COMP
734 if ((s->options & SSL_OP_NO_COMPRESSION)
735 || !s->ctx->comp_methods)
738 j=sk_SSL_COMP_num(s->ctx->comp_methods);
742 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
746 *(p++)=0; /* Add the NULL method */
748 #ifndef OPENSSL_NO_TLSEXT
750 if (ssl_prepare_clienthello_tlsext(s) <= 0)
752 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
755 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
757 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
764 *(d++)=SSL3_MT_CLIENT_HELLO;
767 s->state=SSL3_ST_CW_CLNT_HELLO_B;
768 /* number of bytes to write */
773 /* SSL3_ST_CW_CLNT_HELLO_B */
774 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
779 int ssl3_get_server_hello(SSL *s)
781 STACK_OF(SSL_CIPHER) *sk;
787 #ifndef OPENSSL_NO_COMP
791 n=s->method->ssl_get_message(s,
792 SSL3_ST_CR_SRVR_HELLO_A,
793 SSL3_ST_CR_SRVR_HELLO_B,
798 if (!ok) return((int)n);
800 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
802 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
804 if ( s->d1->send_cookie == 0)
806 s->s3->tmp.reuse_message = 1;
809 else /* already sent a cookie */
811 al=SSL_AD_UNEXPECTED_MESSAGE;
812 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
818 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
820 al=SSL_AD_UNEXPECTED_MESSAGE;
821 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
825 d=p=(unsigned char *)s->init_msg;
827 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
829 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
830 s->version=(s->version&0xff00)|p[1];
831 al=SSL_AD_PROTOCOL_VERSION;
836 /* load the server hello data */
837 /* load the server random */
838 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
841 /* get the session-id */
844 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
846 al=SSL_AD_ILLEGAL_PARAMETER;
847 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
851 #ifndef OPENSSL_NO_TLSEXT
852 /* check if we want to resume the session based on external pre-shared secret */
853 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
855 SSL_CIPHER *pref_cipher=NULL;
856 s->session->master_key_length=sizeof(s->session->master_key);
857 if (s->tls_session_secret_cb(s, s->session->master_key,
858 &s->session->master_key_length,
860 s->tls_session_secret_cb_arg))
862 s->session->cipher = pref_cipher ?
863 pref_cipher : ssl_get_cipher_by_char(s, p+j);
866 #endif /* OPENSSL_NO_TLSEXT */
868 if (j != 0 && j == s->session->session_id_length
869 && memcmp(p,s->session->session_id,j) == 0)
871 if(s->sid_ctx_length != s->session->sid_ctx_length
872 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
874 /* actually a client application bug */
875 al=SSL_AD_ILLEGAL_PARAMETER;
876 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
881 else /* a miss or crap from the other end */
883 /* If we were trying for session-id reuse, make a new
884 * SSL_SESSION so we don't stuff up other people */
886 if (s->session->session_id_length > 0)
888 if (!ssl_get_new_session(s,0))
890 al=SSL_AD_INTERNAL_ERROR;
894 s->session->session_id_length=j;
895 memcpy(s->session->session_id,p,j); /* j could be 0 */
898 c=ssl_get_cipher_by_char(s,p);
902 al=SSL_AD_ILLEGAL_PARAMETER;
903 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
906 /* TLS v1.2 only ciphersuites require v1.2 or later */
907 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
908 (TLS1_get_version(s) < TLS1_2_VERSION))
910 al=SSL_AD_ILLEGAL_PARAMETER;
911 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
914 p+=ssl_put_cipher_by_char(s,NULL,NULL);
916 sk=ssl_get_ciphers_by_id(s);
917 i=sk_SSL_CIPHER_find(sk,c);
920 /* we did not say we would use this cipher */
921 al=SSL_AD_ILLEGAL_PARAMETER;
922 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
926 /* Depending on the session caching (internal/external), the cipher
927 and/or cipher_id values may not be set. Make sure that
928 cipher_id is set and use it for comparison. */
929 if (s->session->cipher)
930 s->session->cipher_id = s->session->cipher->id;
931 if (s->hit && (s->session->cipher_id != c->id))
933 /* Workaround is now obsolete */
936 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
939 al=SSL_AD_ILLEGAL_PARAMETER;
940 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
944 s->s3->tmp.new_cipher=c;
945 /* Don't digest cached records if TLS v1.2: we may need them for
946 * client authentication.
948 if (TLS1_get_version(s) < TLS1_2_VERSION && !ssl3_digest_cached_records(s))
950 /* lets get the compression algorithm */
952 #ifdef OPENSSL_NO_COMP
955 al=SSL_AD_ILLEGAL_PARAMETER;
956 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
959 /* If compression is disabled we'd better not try to resume a session
962 if (s->session->compress_meth != 0)
964 al=SSL_AD_INTERNAL_ERROR;
965 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
970 if (s->hit && j != s->session->compress_meth)
972 al=SSL_AD_ILLEGAL_PARAMETER;
973 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
978 else if (s->options & SSL_OP_NO_COMPRESSION)
980 al=SSL_AD_ILLEGAL_PARAMETER;
981 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
985 comp=ssl3_comp_find(s->ctx->comp_methods,j);
987 if ((j != 0) && (comp == NULL))
989 al=SSL_AD_ILLEGAL_PARAMETER;
990 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
995 s->s3->tmp.new_compression=comp;
999 #ifndef OPENSSL_NO_TLSEXT
1001 if (s->version >= SSL3_VERSION)
1003 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
1005 /* 'al' set by ssl_parse_serverhello_tlsext */
1006 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
1009 if (ssl_check_serverhello_tlsext(s) <= 0)
1011 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
1019 /* wrong packet length */
1020 al=SSL_AD_DECODE_ERROR;
1021 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
1027 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1032 int ssl3_get_server_certificate(SSL *s)
1034 int al,i,ok,ret= -1;
1035 unsigned long n,nc,llen,l;
1037 const unsigned char *q,*p;
1039 STACK_OF(X509) *sk=NULL;
1041 EVP_PKEY *pkey=NULL;
1042 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1044 n=s->method->ssl_get_message(s,
1051 if (!ok) return((int)n);
1053 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1054 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1055 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1057 s->s3->tmp.reuse_message=1;
1061 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1063 al=SSL_AD_UNEXPECTED_MESSAGE;
1064 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1067 p=d=(unsigned char *)s->init_msg;
1069 if ((sk=sk_X509_new_null()) == NULL)
1071 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1078 al=SSL_AD_DECODE_ERROR;
1079 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1082 for (nc=0; nc<llen; )
1085 if ((l+nc+3) > llen)
1087 al=SSL_AD_DECODE_ERROR;
1088 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1093 x=d2i_X509(NULL,&q,l);
1096 al=SSL_AD_BAD_CERTIFICATE;
1097 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1102 al=SSL_AD_DECODE_ERROR;
1103 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1106 if (!sk_X509_push(sk,x))
1108 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1116 i=ssl_verify_cert_chain(s,sk);
1117 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1118 #ifndef OPENSSL_NO_KRB5
1119 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1120 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1121 #endif /* OPENSSL_NO_KRB5 */
1124 al=ssl_verify_alarm_type(s->verify_result);
1125 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1128 ERR_clear_error(); /* but we keep s->verify_result */
1130 sc=ssl_sess_cert_new();
1131 if (sc == NULL) goto err;
1133 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1134 s->session->sess_cert=sc;
1137 /* Inconsistency alert: cert_chain does include the peer's
1138 * certificate, which we don't include in s3_srvr.c */
1139 x=sk_X509_value(sk,0);
1141 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1143 pkey=X509_get_pubkey(x);
1145 /* VRS: allow null cert if auth == KRB5 */
1146 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1147 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1151 printf("pkey,x = %p, %p\n", pkey,x);
1152 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1153 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1154 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1155 #endif /* KSSL_DEBUG */
1157 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1161 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1162 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1166 i=ssl_cert_type(x,pkey);
1167 if (need_cert && i < 0)
1171 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1172 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1178 sc->peer_cert_type=i;
1179 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1180 /* Why would the following ever happen?
1181 * We just created sc a couple of lines ago. */
1182 if (sc->peer_pkeys[i].x509 != NULL)
1183 X509_free(sc->peer_pkeys[i].x509);
1184 sc->peer_pkeys[i].x509=x;
1185 sc->peer_key= &(sc->peer_pkeys[i]);
1187 if (s->session->peer != NULL)
1188 X509_free(s->session->peer);
1189 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1194 sc->peer_cert_type=i;
1197 if (s->session->peer != NULL)
1198 X509_free(s->session->peer);
1199 s->session->peer=NULL;
1201 s->session->verify_result = s->verify_result;
1209 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1212 EVP_PKEY_free(pkey);
1214 sk_X509_pop_free(sk,X509_free);
1218 int ssl3_get_key_exchange(SSL *s)
1220 #ifndef OPENSSL_NO_RSA
1221 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1224 unsigned char *param,*p;
1225 int al,i,j,param_len,ok;
1227 EVP_PKEY *pkey=NULL;
1228 const EVP_MD *md = NULL;
1229 #ifndef OPENSSL_NO_RSA
1232 #ifndef OPENSSL_NO_DH
1235 #ifndef OPENSSL_NO_ECDH
1236 EC_KEY *ecdh = NULL;
1237 BN_CTX *bn_ctx = NULL;
1238 EC_POINT *srvr_ecpoint = NULL;
1240 int encoded_pt_len = 0;
1243 /* use same message size as in ssl3_get_certificate_request()
1244 * as ServerKeyExchange message may be skipped */
1245 n=s->method->ssl_get_message(s,
1246 SSL3_ST_CR_KEY_EXCH_A,
1247 SSL3_ST_CR_KEY_EXCH_B,
1251 if (!ok) return((int)n);
1253 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1255 #ifndef OPENSSL_NO_PSK
1256 /* In plain PSK ciphersuite, ServerKeyExchange can be
1257 omitted if no identity hint is sent. Set
1258 session->sess_cert anyway to avoid problems
1260 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1262 s->session->sess_cert=ssl_sess_cert_new();
1263 if (s->ctx->psk_identity_hint)
1264 OPENSSL_free(s->ctx->psk_identity_hint);
1265 s->ctx->psk_identity_hint = NULL;
1268 s->s3->tmp.reuse_message=1;
1272 param=p=(unsigned char *)s->init_msg;
1273 if (s->session->sess_cert != NULL)
1275 #ifndef OPENSSL_NO_RSA
1276 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1278 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1279 s->session->sess_cert->peer_rsa_tmp=NULL;
1282 #ifndef OPENSSL_NO_DH
1283 if (s->session->sess_cert->peer_dh_tmp)
1285 DH_free(s->session->sess_cert->peer_dh_tmp);
1286 s->session->sess_cert->peer_dh_tmp=NULL;
1289 #ifndef OPENSSL_NO_ECDH
1290 if (s->session->sess_cert->peer_ecdh_tmp)
1292 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1293 s->session->sess_cert->peer_ecdh_tmp=NULL;
1299 s->session->sess_cert=ssl_sess_cert_new();
1303 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1304 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1305 EVP_MD_CTX_init(&md_ctx);
1307 #ifndef OPENSSL_NO_PSK
1308 if (alg_k & SSL_kPSK)
1310 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1312 al=SSL_AD_HANDSHAKE_FAILURE;
1315 /* Store PSK identity hint for later use, hint is used
1316 * in ssl3_send_client_key_exchange. Assume that the
1317 * maximum length of a PSK identity hint can be as
1318 * long as the maximum length of a PSK identity. */
1319 if (i > PSK_MAX_IDENTITY_LEN)
1321 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1322 SSL_R_DATA_LENGTH_TOO_LONG);
1327 al=SSL_AD_DECODE_ERROR;
1328 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1329 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1332 /* If received PSK identity hint contains NULL
1333 * characters, the hint is truncated from the first
1334 * NULL. p may not be ending with NULL, so create a
1335 * NULL-terminated string. */
1336 memcpy(tmp_id_hint, p, i);
1337 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1338 if (s->ctx->psk_identity_hint != NULL)
1339 OPENSSL_free(s->ctx->psk_identity_hint);
1340 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1341 if (s->ctx->psk_identity_hint == NULL)
1343 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1351 #endif /* !OPENSSL_NO_PSK */
1352 #ifndef OPENSSL_NO_SRP
1353 if (alg_k & SSL_kSRP)
1359 al=SSL_AD_DECODE_ERROR;
1360 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1363 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1365 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1374 al=SSL_AD_DECODE_ERROR;
1375 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1378 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1380 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1385 i = (unsigned int)(p[0]);
1390 al=SSL_AD_DECODE_ERROR;
1391 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1394 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1396 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1405 al=SSL_AD_DECODE_ERROR;
1406 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1409 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1411 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1417 /* We must check if there is a certificate */
1418 #ifndef OPENSSL_NO_RSA
1419 if (alg_a & SSL_aRSA)
1420 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1425 #ifndef OPENSSL_NO_DSA
1426 else if (alg_a & SSL_aDSS)
1427 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1431 #endif /* !OPENSSL_NO_SRP */
1432 #ifndef OPENSSL_NO_RSA
1433 if (alg_k & SSL_kRSA)
1435 if ((rsa=RSA_new()) == NULL)
1437 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1444 al=SSL_AD_DECODE_ERROR;
1445 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1448 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1450 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1459 al=SSL_AD_DECODE_ERROR;
1460 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1463 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1465 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1471 /* this should be because we are using an export cipher */
1472 if (alg_a & SSL_aRSA)
1473 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1476 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1479 s->session->sess_cert->peer_rsa_tmp=rsa;
1482 #else /* OPENSSL_NO_RSA */
1486 #ifndef OPENSSL_NO_DH
1487 else if (alg_k & SSL_kEDH)
1489 if ((dh=DH_new()) == NULL)
1491 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1498 al=SSL_AD_DECODE_ERROR;
1499 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1502 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1504 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1513 al=SSL_AD_DECODE_ERROR;
1514 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1517 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1519 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1528 al=SSL_AD_DECODE_ERROR;
1529 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1532 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1534 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1540 #ifndef OPENSSL_NO_RSA
1541 if (alg_a & SSL_aRSA)
1542 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1547 #ifndef OPENSSL_NO_DSA
1548 else if (alg_a & SSL_aDSS)
1549 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1551 /* else anonymous DH, so no certificate or pkey. */
1553 s->session->sess_cert->peer_dh_tmp=dh;
1556 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1558 al=SSL_AD_ILLEGAL_PARAMETER;
1559 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1562 #endif /* !OPENSSL_NO_DH */
1564 #ifndef OPENSSL_NO_ECDH
1565 else if (alg_k & SSL_kEECDH)
1568 const EC_GROUP *group;
1570 if ((ecdh=EC_KEY_new()) == NULL)
1572 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1576 /* Extract elliptic curve parameters and the
1577 * server's ephemeral ECDH public key.
1578 * Keep accumulating lengths of various components in
1579 * param_len and make sure it never exceeds n.
1582 /* XXX: For now we only support named (not generic) curves
1583 * and the ECParameters in this case is just three bytes.
1586 if ((param_len > n) ||
1587 (*p != NAMED_CURVE_TYPE) ||
1588 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1590 al=SSL_AD_INTERNAL_ERROR;
1591 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1595 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1598 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1601 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1603 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1606 EC_GROUP_free(ngroup);
1608 group = EC_KEY_get0_group(ecdh);
1610 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1611 (EC_GROUP_get_degree(group) > 163))
1613 al=SSL_AD_EXPORT_RESTRICTION;
1614 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1620 /* Next, get the encoded ECPoint */
1621 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1622 ((bn_ctx = BN_CTX_new()) == NULL))
1624 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1628 encoded_pt_len = *p; /* length of encoded point */
1630 param_len += (1 + encoded_pt_len);
1631 if ((param_len > n) ||
1632 (EC_POINT_oct2point(group, srvr_ecpoint,
1633 p, encoded_pt_len, bn_ctx) == 0))
1635 al=SSL_AD_DECODE_ERROR;
1636 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1643 /* The ECC/TLS specification does not mention
1644 * the use of DSA to sign ECParameters in the server
1645 * key exchange message. We do support RSA and ECDSA.
1648 #ifndef OPENSSL_NO_RSA
1649 else if (alg_a & SSL_aRSA)
1650 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1652 #ifndef OPENSSL_NO_ECDSA
1653 else if (alg_a & SSL_aECDSA)
1654 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1656 /* else anonymous ECDH, so no certificate or pkey. */
1657 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1658 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1660 BN_CTX_free(bn_ctx);
1662 EC_POINT_free(srvr_ecpoint);
1663 srvr_ecpoint = NULL;
1667 al=SSL_AD_UNEXPECTED_MESSAGE;
1668 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1671 #endif /* !OPENSSL_NO_ECDH */
1674 /* p points to the next byte, there are 'n' bytes left */
1676 /* if it was signed, check the signature */
1679 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1681 int sigalg = tls12_get_sigid(pkey);
1682 /* Should never happen */
1685 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1688 /* Check key type is consistent with signature */
1689 if (sigalg != (int)p[1])
1691 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE);
1692 al=SSL_AD_DECODE_ERROR;
1695 md = tls12_get_hash(p[0]);
1698 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
1699 al=SSL_AD_DECODE_ERROR;
1703 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1713 j=EVP_PKEY_size(pkey);
1715 if ((i != n) || (n > j) || (n <= 0))
1717 /* wrong packet length */
1718 al=SSL_AD_DECODE_ERROR;
1719 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1723 #ifndef OPENSSL_NO_RSA
1724 if (pkey->type == EVP_PKEY_RSA && TLS1_get_version(s) < TLS1_2_VERSION)
1730 for (num=2; num > 0; num--)
1732 EVP_MD_CTX_set_flags(&md_ctx,
1733 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1734 EVP_DigestInit_ex(&md_ctx,(num == 2)
1735 ?s->ctx->md5:s->ctx->sha1, NULL);
1736 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1737 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1738 EVP_DigestUpdate(&md_ctx,param,param_len);
1739 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1743 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1747 al=SSL_AD_DECRYPT_ERROR;
1748 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1754 al=SSL_AD_DECRYPT_ERROR;
1755 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1762 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1763 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1764 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1765 EVP_VerifyUpdate(&md_ctx,param,param_len);
1766 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1769 al=SSL_AD_DECRYPT_ERROR;
1770 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1777 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1778 /* aNULL or kPSK do not need public keys */
1780 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1783 /* still data left over */
1786 al=SSL_AD_DECODE_ERROR;
1787 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1791 EVP_PKEY_free(pkey);
1792 EVP_MD_CTX_cleanup(&md_ctx);
1795 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1797 EVP_PKEY_free(pkey);
1798 #ifndef OPENSSL_NO_RSA
1802 #ifndef OPENSSL_NO_DH
1806 #ifndef OPENSSL_NO_ECDH
1807 BN_CTX_free(bn_ctx);
1808 EC_POINT_free(srvr_ecpoint);
1812 EVP_MD_CTX_cleanup(&md_ctx);
1816 int ssl3_get_certificate_request(SSL *s)
1819 unsigned long n,nc,l;
1820 unsigned int llen, ctype_num,i;
1822 const unsigned char *p,*q;
1824 STACK_OF(X509_NAME) *ca_sk=NULL;
1826 n=s->method->ssl_get_message(s,
1827 SSL3_ST_CR_CERT_REQ_A,
1828 SSL3_ST_CR_CERT_REQ_B,
1833 if (!ok) return((int)n);
1835 s->s3->tmp.cert_req=0;
1837 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1839 s->s3->tmp.reuse_message=1;
1840 /* If we get here we don't need any cached handshake records
1841 * as we wont be doing client auth.
1843 if (s->s3->handshake_buffer)
1845 if (!ssl3_digest_cached_records(s))
1851 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1853 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1854 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1858 /* TLS does not like anon-DH with client cert */
1859 if (s->version > SSL3_VERSION)
1861 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1863 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1864 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1869 p=d=(unsigned char *)s->init_msg;
1871 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1873 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1877 /* get the certificate types */
1879 if (ctype_num > SSL3_CT_NUMBER)
1880 ctype_num=SSL3_CT_NUMBER;
1881 for (i=0; i<ctype_num; i++)
1882 s->s3->tmp.ctype[i]= p[i];
1884 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1887 /* Check we have enough room for signature algorithms and
1888 * following length value.
1890 if ((unsigned long)(p - d + llen + 2) > n)
1892 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1893 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
1896 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
1898 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1899 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
1905 /* get the CA RDNs */
1910 out=fopen("/tmp/vsign.der","w");
1911 fwrite(p,1,llen,out);
1916 if ((unsigned long)(p - d + llen) != n)
1918 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1919 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1923 for (nc=0; nc<llen; )
1926 if ((l+nc+2) > llen)
1928 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1929 goto cont; /* netscape bugs */
1930 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1931 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1937 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1939 /* If netscape tolerance is on, ignore errors */
1940 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1944 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1945 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1952 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1953 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1956 if (!sk_X509_NAME_push(ca_sk,xn))
1958 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1972 /* we should setup a certificate to return.... */
1973 s->s3->tmp.cert_req=1;
1974 s->s3->tmp.ctype_num=ctype_num;
1975 if (s->s3->tmp.ca_names != NULL)
1976 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1977 s->s3->tmp.ca_names=ca_sk;
1982 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1986 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1988 return(X509_NAME_cmp(*a,*b));
1990 #ifndef OPENSSL_NO_TLSEXT
1991 int ssl3_get_new_session_ticket(SSL *s)
1993 int ok,al,ret=0, ticklen;
1995 const unsigned char *p;
1998 n=s->method->ssl_get_message(s,
1999 SSL3_ST_CR_SESSION_TICKET_A,
2000 SSL3_ST_CR_SESSION_TICKET_B,
2008 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
2010 s->s3->tmp.reuse_message=1;
2013 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
2015 al=SSL_AD_UNEXPECTED_MESSAGE;
2016 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
2021 /* need at least ticket_lifetime_hint + ticket length */
2022 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
2023 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2027 p=d=(unsigned char *)s->init_msg;
2028 n2l(p, s->session->tlsext_tick_lifetime_hint);
2030 /* ticket_lifetime_hint + ticket_length + ticket */
2031 if (ticklen + 6 != n)
2033 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
2034 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2037 if (s->session->tlsext_tick)
2039 OPENSSL_free(s->session->tlsext_tick);
2040 s->session->tlsext_ticklen = 0;
2042 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2043 if (!s->session->tlsext_tick)
2045 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2048 memcpy(s->session->tlsext_tick, p, ticklen);
2049 s->session->tlsext_ticklen = ticklen;
2050 /* There are two ways to detect a resumed ticket sesion.
2051 * One is to set an appropriate session ID and then the server
2052 * must return a match in ServerHello. This allows the normal
2053 * client session ID matching to work and we know much
2054 * earlier that the ticket has been accepted.
2056 * The other way is to set zero length session ID when the
2057 * ticket is presented and rely on the handshake to determine
2058 * session resumption.
2060 * We choose the former approach because this fits in with
2061 * assumptions elsewhere in OpenSSL. The session ID is set
2062 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2065 EVP_Digest(p, ticklen,
2066 s->session->session_id, &s->session->session_id_length,
2067 #ifndef OPENSSL_NO_SHA256
2068 EVP_sha256(), NULL);
2075 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2080 int ssl3_get_cert_status(SSL *s)
2083 unsigned long resplen,n;
2084 const unsigned char *p;
2086 n=s->method->ssl_get_message(s,
2087 SSL3_ST_CR_CERT_STATUS_A,
2088 SSL3_ST_CR_CERT_STATUS_B,
2089 SSL3_MT_CERTIFICATE_STATUS,
2093 if (!ok) return((int)n);
2096 /* need at least status type + length */
2097 al = SSL_AD_DECODE_ERROR;
2098 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2101 p = (unsigned char *)s->init_msg;
2102 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2104 al = SSL_AD_DECODE_ERROR;
2105 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2109 if (resplen + 4 != n)
2111 al = SSL_AD_DECODE_ERROR;
2112 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2115 if (s->tlsext_ocsp_resp)
2116 OPENSSL_free(s->tlsext_ocsp_resp);
2117 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2118 if (!s->tlsext_ocsp_resp)
2120 al = SSL_AD_INTERNAL_ERROR;
2121 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2124 s->tlsext_ocsp_resplen = resplen;
2125 if (s->ctx->tlsext_status_cb)
2128 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2131 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2132 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2137 al = SSL_AD_INTERNAL_ERROR;
2138 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2144 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2149 int ssl3_get_server_done(SSL *s)
2154 n=s->method->ssl_get_message(s,
2155 SSL3_ST_CR_SRVR_DONE_A,
2156 SSL3_ST_CR_SRVR_DONE_B,
2157 SSL3_MT_SERVER_DONE,
2158 30, /* should be very small, like 0 :-) */
2161 if (!ok) return((int)n);
2164 /* should contain no data */
2165 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2166 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2174 int ssl3_send_client_key_exchange(SSL *s)
2176 unsigned char *p,*d;
2178 unsigned long alg_k;
2179 #ifndef OPENSSL_NO_RSA
2181 EVP_PKEY *pkey=NULL;
2183 #ifndef OPENSSL_NO_KRB5
2185 #endif /* OPENSSL_NO_KRB5 */
2186 #ifndef OPENSSL_NO_ECDH
2187 EC_KEY *clnt_ecdh = NULL;
2188 const EC_POINT *srvr_ecpoint = NULL;
2189 EVP_PKEY *srvr_pub_pkey = NULL;
2190 unsigned char *encodedPoint = NULL;
2191 int encoded_pt_len = 0;
2192 BN_CTX * bn_ctx = NULL;
2195 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2197 d=(unsigned char *)s->init_buf->data;
2200 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2202 /* Fool emacs indentation */
2204 #ifndef OPENSSL_NO_RSA
2205 else if (alg_k & SSL_kRSA)
2208 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2210 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2211 rsa=s->session->sess_cert->peer_rsa_tmp;
2214 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2215 if ((pkey == NULL) ||
2216 (pkey->type != EVP_PKEY_RSA) ||
2217 (pkey->pkey.rsa == NULL))
2219 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2223 EVP_PKEY_free(pkey);
2226 tmp_buf[0]=s->client_version>>8;
2227 tmp_buf[1]=s->client_version&0xff;
2228 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2231 s->session->master_key_length=sizeof tmp_buf;
2234 /* Fix buf for TLS and beyond */
2235 if (s->version > SSL3_VERSION)
2237 n=RSA_public_encrypt(sizeof tmp_buf,
2238 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2240 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2241 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2245 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2249 /* Fix buf for TLS and beyond */
2250 if (s->version > SSL3_VERSION)
2256 s->session->master_key_length=
2257 s->method->ssl3_enc->generate_master_secret(s,
2258 s->session->master_key,
2259 tmp_buf,sizeof tmp_buf);
2260 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2263 #ifndef OPENSSL_NO_KRB5
2264 else if (alg_k & SSL_kKRB5)
2266 krb5_error_code krb5rc;
2267 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2268 /* krb5_data krb5_ap_req; */
2269 krb5_data *enc_ticket;
2270 krb5_data authenticator, *authp = NULL;
2271 EVP_CIPHER_CTX ciph_ctx;
2272 const EVP_CIPHER *enc = NULL;
2273 unsigned char iv[EVP_MAX_IV_LENGTH];
2274 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2275 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2276 + EVP_MAX_IV_LENGTH];
2277 int padl, outl = sizeof(epms);
2279 EVP_CIPHER_CTX_init(&ciph_ctx);
2282 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2284 #endif /* KSSL_DEBUG */
2288 if (KRB5SENDAUTH) authp = &authenticator;
2289 #endif /* KRB5SENDAUTH */
2291 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2293 enc = kssl_map_enc(kssl_ctx->enctype);
2298 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2299 if (krb5rc && kssl_err.text)
2300 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2302 #endif /* KSSL_DEBUG */
2306 ssl3_send_alert(s,SSL3_AL_FATAL,
2307 SSL_AD_HANDSHAKE_FAILURE);
2308 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2313 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2314 ** in place of RFC 2712 KerberosWrapper, as in:
2316 ** Send ticket (copy to *p, set n = length)
2317 ** n = krb5_ap_req.length;
2318 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2319 ** if (krb5_ap_req.data)
2320 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2322 ** Now using real RFC 2712 KerberosWrapper
2323 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2324 ** Note: 2712 "opaque" types are here replaced
2325 ** with a 2-byte length followed by the value.
2327 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2328 ** Where "xx xx" = length bytes. Shown here with
2329 ** optional authenticator omitted.
2332 /* KerberosWrapper.Ticket */
2333 s2n(enc_ticket->length,p);
2334 memcpy(p, enc_ticket->data, enc_ticket->length);
2335 p+= enc_ticket->length;
2336 n = enc_ticket->length + 2;
2338 /* KerberosWrapper.Authenticator */
2339 if (authp && authp->length)
2341 s2n(authp->length,p);
2342 memcpy(p, authp->data, authp->length);
2344 n+= authp->length + 2;
2352 s2n(0,p);/* null authenticator length */
2356 tmp_buf[0]=s->client_version>>8;
2357 tmp_buf[1]=s->client_version&0xff;
2358 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2361 /* 20010420 VRS. Tried it this way; failed.
2362 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2363 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2364 ** kssl_ctx->length);
2365 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2368 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2369 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2371 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2373 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2375 if (outl > (int)sizeof epms)
2377 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2380 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2382 /* KerberosWrapper.EncryptedPreMasterSecret */
2384 memcpy(p, epms, outl);
2388 s->session->master_key_length=
2389 s->method->ssl3_enc->generate_master_secret(s,
2390 s->session->master_key,
2391 tmp_buf, sizeof tmp_buf);
2393 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2394 OPENSSL_cleanse(epms, outl);
2397 #ifndef OPENSSL_NO_DH
2398 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2400 DH *dh_srvr,*dh_clnt;
2402 if (s->session->sess_cert == NULL)
2404 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2405 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2409 if (s->session->sess_cert->peer_dh_tmp != NULL)
2410 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2413 /* we get them from the cert */
2414 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2415 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2419 /* generate a new random key */
2420 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2422 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2425 if (!DH_generate_key(dh_clnt))
2427 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2432 /* use the 'p' output buffer for the DH key, but
2433 * make sure to clear it out afterwards */
2435 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2439 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2444 /* generate master key from the result */
2445 s->session->master_key_length=
2446 s->method->ssl3_enc->generate_master_secret(s,
2447 s->session->master_key,p,n);
2451 /* send off the data */
2452 n=BN_num_bytes(dh_clnt->pub_key);
2454 BN_bn2bin(dh_clnt->pub_key,p);
2459 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2463 #ifndef OPENSSL_NO_ECDH
2464 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2466 const EC_GROUP *srvr_group = NULL;
2468 int ecdh_clnt_cert = 0;
2471 /* Did we send out the client's
2472 * ECDH share for use in premaster
2473 * computation as part of client certificate?
2474 * If so, set ecdh_clnt_cert to 1.
2476 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2478 /* XXX: For now, we do not support client
2479 * authentication using ECDH certificates.
2480 * To add such support, one needs to add
2481 * code that checks for appropriate
2482 * conditions and sets ecdh_clnt_cert to 1.
2483 * For example, the cert have an ECC
2484 * key on the same curve as the server's
2485 * and the key should be authorized for
2488 * One also needs to add code in ssl3_connect
2489 * to skip sending the certificate verify
2492 * if ((s->cert->key->privatekey != NULL) &&
2493 * (s->cert->key->privatekey->type ==
2494 * EVP_PKEY_EC) && ...)
2495 * ecdh_clnt_cert = 1;
2499 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2501 tkey = s->session->sess_cert->peer_ecdh_tmp;
2505 /* Get the Server Public Key from Cert */
2506 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2507 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2508 if ((srvr_pub_pkey == NULL) ||
2509 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2510 (srvr_pub_pkey->pkey.ec == NULL))
2512 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2513 ERR_R_INTERNAL_ERROR);
2517 tkey = srvr_pub_pkey->pkey.ec;
2520 srvr_group = EC_KEY_get0_group(tkey);
2521 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2523 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2525 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2526 ERR_R_INTERNAL_ERROR);
2530 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2532 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2536 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2538 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2543 /* Reuse key info from our certificate
2544 * We only need our private key to perform
2545 * the ECDH computation.
2547 const BIGNUM *priv_key;
2548 tkey = s->cert->key->privatekey->pkey.ec;
2549 priv_key = EC_KEY_get0_private_key(tkey);
2550 if (priv_key == NULL)
2552 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2555 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2557 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2563 /* Generate a new ECDH key pair */
2564 if (!(EC_KEY_generate_key(clnt_ecdh)))
2566 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2571 /* use the 'p' output buffer for the ECDH key, but
2572 * make sure to clear it out afterwards
2575 field_size = EC_GROUP_get_degree(srvr_group);
2576 if (field_size <= 0)
2578 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2582 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2585 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2590 /* generate master key from the result */
2591 s->session->master_key_length = s->method->ssl3_enc \
2592 -> generate_master_secret(s,
2593 s->session->master_key,
2596 memset(p, 0, n); /* clean up */
2600 /* Send empty client key exch message */
2605 /* First check the size of encoding and
2606 * allocate memory accordingly.
2609 EC_POINT_point2oct(srvr_group,
2610 EC_KEY_get0_public_key(clnt_ecdh),
2611 POINT_CONVERSION_UNCOMPRESSED,
2614 encodedPoint = (unsigned char *)
2615 OPENSSL_malloc(encoded_pt_len *
2616 sizeof(unsigned char));
2617 bn_ctx = BN_CTX_new();
2618 if ((encodedPoint == NULL) ||
2621 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2625 /* Encode the public key */
2626 n = EC_POINT_point2oct(srvr_group,
2627 EC_KEY_get0_public_key(clnt_ecdh),
2628 POINT_CONVERSION_UNCOMPRESSED,
2629 encodedPoint, encoded_pt_len, bn_ctx);
2631 *p = n; /* length of encoded point */
2632 /* Encoded point will be copied here */
2634 /* copy the point */
2635 memcpy((unsigned char *)p, encodedPoint, n);
2636 /* increment n to account for length field */
2640 /* Free allocated memory */
2641 BN_CTX_free(bn_ctx);
2642 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2643 if (clnt_ecdh != NULL)
2644 EC_KEY_free(clnt_ecdh);
2645 EVP_PKEY_free(srvr_pub_pkey);
2647 #endif /* !OPENSSL_NO_ECDH */
2648 else if (alg_k & SSL_kGOST)
2650 /* GOST key exchange message creation */
2651 EVP_PKEY_CTX *pkey_ctx;
2654 unsigned int md_len;
2656 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2657 EVP_MD_CTX *ukm_hash;
2660 /* Get server sertificate PKEY and create ctx from it */
2661 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2663 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2665 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2669 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2670 /* If we have send a certificate, and certificate key
2672 * parameters match those of server certificate, use
2673 * certificate key for key exchange
2676 /* Otherwise, generate ephemeral key pair */
2678 EVP_PKEY_encrypt_init(pkey_ctx);
2679 /* Generate session key */
2680 RAND_bytes(premaster_secret,32);
2681 /* If we have client certificate, use its secret as peer key */
2682 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2683 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2684 /* If there was an error - just ignore it. Ephemeral key
2690 /* Compute shared IV and store it in algorithm-specific
2692 ukm_hash = EVP_MD_CTX_create();
2693 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2694 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2695 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2696 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2697 EVP_MD_CTX_destroy(ukm_hash);
2698 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2700 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2704 /* Make GOST keytransport blob message */
2705 /*Encapsulate it into sequence */
2706 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2708 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2709 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2716 *(p++)= msglen & 0xff;
2721 *(p++)= msglen & 0xff;
2724 memcpy(p, tmp, msglen);
2725 /* Check if pubkey from client certificate was used */
2726 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2728 /* Set flag "skip certificate verify" */
2729 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2731 EVP_PKEY_CTX_free(pkey_ctx);
2732 s->session->master_key_length=
2733 s->method->ssl3_enc->generate_master_secret(s,
2734 s->session->master_key,premaster_secret,32);
2735 EVP_PKEY_free(pub_key);
2738 #ifndef OPENSSL_NO_SRP
2739 else if (alg_k & SSL_kSRP)
2741 if (s->srp_ctx.A != NULL)
2743 /* send off the data */
2744 n=BN_num_bytes(s->srp_ctx.A);
2746 BN_bn2bin(s->srp_ctx.A,p);
2751 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2754 if (s->session->srp_username != NULL)
2755 OPENSSL_free(s->session->srp_username);
2756 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2757 if (s->session->srp_username == NULL)
2759 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2760 ERR_R_MALLOC_FAILURE);
2764 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2766 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2771 #ifndef OPENSSL_NO_PSK
2772 else if (alg_k & SSL_kPSK)
2774 char identity[PSK_MAX_IDENTITY_LEN];
2775 unsigned char *t = NULL;
2776 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2777 unsigned int pre_ms_len = 0, psk_len = 0;
2781 if (s->psk_client_callback == NULL)
2783 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2784 SSL_R_PSK_NO_CLIENT_CB);
2788 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2789 identity, PSK_MAX_IDENTITY_LEN,
2790 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2791 if (psk_len > PSK_MAX_PSK_LEN)
2793 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2794 ERR_R_INTERNAL_ERROR);
2797 else if (psk_len == 0)
2799 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2800 SSL_R_PSK_IDENTITY_NOT_FOUND);
2804 /* create PSK pre_master_secret */
2805 pre_ms_len = 2+psk_len+2+psk_len;
2807 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2809 memset(t, 0, psk_len);
2813 if (s->session->psk_identity_hint != NULL)
2814 OPENSSL_free(s->session->psk_identity_hint);
2815 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2816 if (s->ctx->psk_identity_hint != NULL &&
2817 s->session->psk_identity_hint == NULL)
2819 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2820 ERR_R_MALLOC_FAILURE);
2824 if (s->session->psk_identity != NULL)
2825 OPENSSL_free(s->session->psk_identity);
2826 s->session->psk_identity = BUF_strdup(identity);
2827 if (s->session->psk_identity == NULL)
2829 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2830 ERR_R_MALLOC_FAILURE);
2834 s->session->master_key_length =
2835 s->method->ssl3_enc->generate_master_secret(s,
2836 s->session->master_key,
2837 psk_or_pre_ms, pre_ms_len);
2838 n = strlen(identity);
2840 memcpy(p, identity, n);
2844 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2845 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2848 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2855 ssl3_send_alert(s, SSL3_AL_FATAL,
2856 SSL_AD_HANDSHAKE_FAILURE);
2857 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2858 ERR_R_INTERNAL_ERROR);
2862 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2865 s->state=SSL3_ST_CW_KEY_EXCH_B;
2866 /* number of bytes to write */
2871 /* SSL3_ST_CW_KEY_EXCH_B */
2872 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2874 #ifndef OPENSSL_NO_ECDH
2875 BN_CTX_free(bn_ctx);
2876 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2877 if (clnt_ecdh != NULL)
2878 EC_KEY_free(clnt_ecdh);
2879 EVP_PKEY_free(srvr_pub_pkey);
2884 int ssl3_send_client_verify(SSL *s)
2886 unsigned char *p,*d;
2887 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2889 EVP_PKEY_CTX *pctx=NULL;
2895 EVP_MD_CTX_init(&mctx);
2897 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2899 d=(unsigned char *)s->init_buf->data;
2901 pkey=s->cert->key->privatekey;
2902 /* Create context from key and test if sha1 is allowed as digest */
2903 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2904 EVP_PKEY_sign_init(pctx);
2905 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2907 if (TLS1_get_version(s) < TLS1_2_VERSION)
2908 s->method->ssl3_enc->cert_verify_mac(s,
2910 &(data[MD5_DIGEST_LENGTH]));
2916 /* For TLS v1.2 send signature algorithm and signature
2917 * using agreed digest and cached handshake records.
2919 if (TLS1_get_version(s) >= TLS1_2_VERSION)
2923 const EVP_MD *md = s->cert->key->digest;
2924 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
2926 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
2928 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2929 ERR_R_INTERNAL_ERROR);
2934 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
2937 if (!EVP_SignInit_ex(&mctx, md, NULL)
2938 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
2939 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
2941 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2947 if (!ssl3_digest_cached_records(s))
2951 #ifndef OPENSSL_NO_RSA
2952 if (pkey->type == EVP_PKEY_RSA)
2954 s->method->ssl3_enc->cert_verify_mac(s,
2957 if (RSA_sign(NID_md5_sha1, data,
2958 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2959 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2961 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2969 #ifndef OPENSSL_NO_DSA
2970 if (pkey->type == EVP_PKEY_DSA)
2972 if (!DSA_sign(pkey->save_type,
2973 &(data[MD5_DIGEST_LENGTH]),
2974 SHA_DIGEST_LENGTH,&(p[2]),
2975 (unsigned int *)&j,pkey->pkey.dsa))
2977 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2985 #ifndef OPENSSL_NO_ECDSA
2986 if (pkey->type == EVP_PKEY_EC)
2988 if (!ECDSA_sign(pkey->save_type,
2989 &(data[MD5_DIGEST_LENGTH]),
2990 SHA_DIGEST_LENGTH,&(p[2]),
2991 (unsigned int *)&j,pkey->pkey.ec))
2993 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3002 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
3004 unsigned char signbuf[64];
3007 s->method->ssl3_enc->cert_verify_mac(s,
3008 NID_id_GostR3411_94,
3010 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
3011 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
3012 ERR_R_INTERNAL_ERROR);
3015 for (i=63,j=0; i>=0; j++, i--) {
3023 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
3026 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
3029 s->state=SSL3_ST_CW_CERT_VRFY_B;
3030 s->init_num=(int)n+4;
3033 EVP_MD_CTX_cleanup(&mctx);
3034 EVP_PKEY_CTX_free(pctx);
3035 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3037 EVP_MD_CTX_cleanup(&mctx);
3038 EVP_PKEY_CTX_free(pctx);
3042 int ssl3_send_client_certificate(SSL *s)
3045 EVP_PKEY *pkey=NULL;
3049 if (s->state == SSL3_ST_CW_CERT_A)
3051 if ((s->cert == NULL) ||
3052 (s->cert->key->x509 == NULL) ||
3053 (s->cert->key->privatekey == NULL))
3054 s->state=SSL3_ST_CW_CERT_B;
3056 s->state=SSL3_ST_CW_CERT_C;
3059 /* We need to get a client cert */
3060 if (s->state == SSL3_ST_CW_CERT_B)
3062 /* If we get an error, we need to
3063 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3064 * We then get retied later */
3066 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3069 s->rwstate=SSL_X509_LOOKUP;
3072 s->rwstate=SSL_NOTHING;
3073 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3075 s->state=SSL3_ST_CW_CERT_B;
3076 if ( !SSL_use_certificate(s,x509) ||
3077 !SSL_use_PrivateKey(s,pkey))
3083 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3086 if (x509 != NULL) X509_free(x509);
3087 if (pkey != NULL) EVP_PKEY_free(pkey);
3090 if (s->version == SSL3_VERSION)
3092 s->s3->tmp.cert_req=0;
3093 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3098 s->s3->tmp.cert_req=2;
3102 /* Ok, we have a cert */
3103 s->state=SSL3_ST_CW_CERT_C;
3106 if (s->state == SSL3_ST_CW_CERT_C)
3108 s->state=SSL3_ST_CW_CERT_D;
3109 l=ssl3_output_cert_chain(s,
3110 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
3114 /* SSL3_ST_CW_CERT_D */
3115 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3118 #define has_bits(i,m) (((i)&(m)) == (m))
3120 int ssl3_check_cert_and_algorithm(SSL *s)
3124 EVP_PKEY *pkey=NULL;
3126 #ifndef OPENSSL_NO_RSA
3129 #ifndef OPENSSL_NO_DH
3133 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3134 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3136 /* we don't have a certificate */
3137 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3140 sc=s->session->sess_cert;
3143 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3147 #ifndef OPENSSL_NO_RSA
3148 rsa=s->session->sess_cert->peer_rsa_tmp;
3150 #ifndef OPENSSL_NO_DH
3151 dh=s->session->sess_cert->peer_dh_tmp;
3154 /* This is the passed certificate */
3156 idx=sc->peer_cert_type;
3157 #ifndef OPENSSL_NO_ECDH
3158 if (idx == SSL_PKEY_ECC)
3160 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3162 { /* check failed */
3163 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3172 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3173 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3174 EVP_PKEY_free(pkey);
3177 /* Check that we have a certificate if we require one */
3178 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3180 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3183 #ifndef OPENSSL_NO_DSA
3184 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3186 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3190 #ifndef OPENSSL_NO_RSA
3191 if ((alg_k & SSL_kRSA) &&
3192 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3194 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3198 #ifndef OPENSSL_NO_DH
3199 if ((alg_k & SSL_kEDH) &&
3200 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3202 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3205 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3207 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3210 #ifndef OPENSSL_NO_DSA
3211 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3213 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3219 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3221 #ifndef OPENSSL_NO_RSA
3222 if (alg_k & SSL_kRSA)
3225 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3227 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3233 #ifndef OPENSSL_NO_DH
3234 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3237 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3239 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3246 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3252 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3257 /* Check to see if handshake is full or resumed. Usually this is just a
3258 * case of checking to see if a cache hit has occurred. In the case of
3259 * session tickets we have to check the next message to be sure.
3262 #ifndef OPENSSL_NO_TLSEXT
3263 # ifndef OPENSSL_NO_NEXTPROTONEG
3264 int ssl3_send_next_proto(SSL *s)
3266 unsigned int len, padding_len;
3269 if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
3271 len = s->next_proto_negotiated_len;
3272 padding_len = 32 - ((len + 2) % 32);
3273 d = (unsigned char *)s->init_buf->data;
3275 memcpy(d + 5, s->next_proto_negotiated, len);
3276 d[5 + len] = padding_len;
3277 memset(d + 6 + len, 0, padding_len);
3278 *(d++)=SSL3_MT_NEXT_PROTO;
3279 l2n3(2 + len + padding_len, d);
3280 s->state = SSL3_ST_CW_NEXT_PROTO_B;
3281 s->init_num = 4 + 2 + len + padding_len;
3285 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3289 int ssl3_check_finished(SSL *s)
3293 /* If we have no ticket it cannot be a resumed session. */
3294 if (!s->session->tlsext_tick)
3296 /* this function is called when we really expect a Certificate
3297 * message, so permit appropriate message length */
3298 n=s->method->ssl_get_message(s,
3304 if (!ok) return((int)n);
3305 s->s3->tmp.reuse_message = 1;
3306 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3307 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3314 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3317 #ifndef OPENSSL_NO_ENGINE
3318 if (s->ctx->client_cert_engine)
3320 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3321 SSL_get_client_CA_list(s),
3322 px509, ppkey, NULL, NULL, NULL);
3327 if (s->ctx->client_cert_cb)
3328 i = s->ctx->client_cert_cb(s,px509,ppkey);