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>
159 #ifndef OPENSSL_NO_DH
160 #include <openssl/dh.h>
162 #include <openssl/bn.h>
163 #ifndef OPENSSL_NO_ENGINE
164 #include <openssl/engine.h>
167 static const SSL_METHOD *ssl3_get_client_method(int ver);
168 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
169 #ifndef OPENSSL_NO_TLSEXT
170 static int ssl3_check_finished(SSL *s);
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);
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 if (ret <= 0) goto end;
287 s->state=SSL3_ST_CR_FINISHED_A;
289 s->state=SSL3_ST_CR_CERT_A;
293 case SSL3_ST_CR_CERT_A:
294 case SSL3_ST_CR_CERT_B:
295 #ifndef OPENSSL_NO_TLSEXT
296 ret=ssl3_check_finished(s);
297 if (ret <= 0) goto end;
301 if (s->tlsext_ticket_expected)
302 s->state=SSL3_ST_CR_SESSION_TICKET_A;
304 s->state=SSL3_ST_CR_FINISHED_A;
309 /* Check if it is anon DH/ECDH */
311 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
312 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
314 ret=ssl3_get_server_certificate(s);
315 if (ret <= 0) goto end;
316 #ifndef OPENSSL_NO_TLSEXT
317 if (s->tlsext_status_expected)
318 s->state=SSL3_ST_CR_CERT_STATUS_A;
320 s->state=SSL3_ST_CR_KEY_EXCH_A;
325 s->state=SSL3_ST_CR_KEY_EXCH_A;
332 s->state=SSL3_ST_CR_KEY_EXCH_A;
337 case SSL3_ST_CR_KEY_EXCH_A:
338 case SSL3_ST_CR_KEY_EXCH_B:
339 ret=ssl3_get_key_exchange(s);
340 if (ret <= 0) goto end;
341 s->state=SSL3_ST_CR_CERT_REQ_A;
344 /* at this point we check that we have the
345 * required stuff from the server */
346 if (!ssl3_check_cert_and_algorithm(s))
353 case SSL3_ST_CR_CERT_REQ_A:
354 case SSL3_ST_CR_CERT_REQ_B:
355 ret=ssl3_get_certificate_request(s);
356 if (ret <= 0) goto end;
357 s->state=SSL3_ST_CR_SRVR_DONE_A;
361 case SSL3_ST_CR_SRVR_DONE_A:
362 case SSL3_ST_CR_SRVR_DONE_B:
363 ret=ssl3_get_server_done(s);
364 if (ret <= 0) goto end;
365 if (s->s3->tmp.cert_req)
366 s->state=SSL3_ST_CW_CERT_A;
368 s->state=SSL3_ST_CW_KEY_EXCH_A;
373 case SSL3_ST_CW_CERT_A:
374 case SSL3_ST_CW_CERT_B:
375 case SSL3_ST_CW_CERT_C:
376 case SSL3_ST_CW_CERT_D:
377 ret=ssl3_send_client_certificate(s);
378 if (ret <= 0) goto end;
379 s->state=SSL3_ST_CW_KEY_EXCH_A;
383 case SSL3_ST_CW_KEY_EXCH_A:
384 case SSL3_ST_CW_KEY_EXCH_B:
385 ret=ssl3_send_client_key_exchange(s);
386 if (ret <= 0) goto end;
387 /* EAY EAY EAY need to check for DH fix cert
389 /* For TLS, cert_req is set to 2, so a cert chain
390 * of nothing is sent, but no verify packet is sent */
391 /* XXX: For now, we do not support client
392 * authentication in ECDH cipher suites with
393 * ECDH (rather than ECDSA) certificates.
394 * We need to skip the certificate verify
395 * message when client's ECDH public key is sent
396 * inside the client certificate.
398 if (s->s3->tmp.cert_req == 1)
400 s->state=SSL3_ST_CW_CERT_VRFY_A;
404 s->state=SSL3_ST_CW_CHANGE_A;
405 s->s3->change_cipher_spec=0;
411 case SSL3_ST_CW_CERT_VRFY_A:
412 case SSL3_ST_CW_CERT_VRFY_B:
413 ret=ssl3_send_client_verify(s);
414 if (ret <= 0) goto end;
415 s->state=SSL3_ST_CW_CHANGE_A;
417 s->s3->change_cipher_spec=0;
420 case SSL3_ST_CW_CHANGE_A:
421 case SSL3_ST_CW_CHANGE_B:
422 ret=ssl3_send_change_cipher_spec(s,
423 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
424 if (ret <= 0) goto end;
425 s->state=SSL3_ST_CW_FINISHED_A;
428 s->session->cipher=s->s3->tmp.new_cipher;
429 #ifdef OPENSSL_NO_COMP
430 s->session->compress_meth=0;
432 if (s->s3->tmp.new_compression == NULL)
433 s->session->compress_meth=0;
435 s->session->compress_meth=
436 s->s3->tmp.new_compression->id;
438 if (!s->method->ssl3_enc->setup_key_block(s))
444 if (!s->method->ssl3_enc->change_cipher_state(s,
445 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
453 case SSL3_ST_CW_FINISHED_A:
454 case SSL3_ST_CW_FINISHED_B:
455 ret=ssl3_send_finished(s,
456 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
457 s->method->ssl3_enc->client_finished_label,
458 s->method->ssl3_enc->client_finished_label_len);
459 if (ret <= 0) goto end;
460 s->state=SSL3_ST_CW_FLUSH;
463 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
466 s->s3->tmp.next_state=SSL_ST_OK;
467 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
470 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
471 s->s3->delay_buf_pop_ret=0;
476 #ifndef OPENSSL_NO_TLSEXT
477 /* Allow NewSessionTicket if ticket expected */
478 if (s->tlsext_ticket_expected)
479 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
483 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
488 #ifndef OPENSSL_NO_TLSEXT
489 case SSL3_ST_CR_SESSION_TICKET_A:
490 case SSL3_ST_CR_SESSION_TICKET_B:
491 ret=ssl3_get_new_session_ticket(s);
492 if (ret <= 0) goto end;
493 s->state=SSL3_ST_CR_FINISHED_A;
497 case SSL3_ST_CR_CERT_STATUS_A:
498 case SSL3_ST_CR_CERT_STATUS_B:
499 ret=ssl3_get_cert_status(s);
500 if (ret <= 0) goto end;
501 s->state=SSL3_ST_CR_KEY_EXCH_A;
506 case SSL3_ST_CR_FINISHED_A:
507 case SSL3_ST_CR_FINISHED_B:
509 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
510 SSL3_ST_CR_FINISHED_B);
511 if (ret <= 0) goto end;
514 s->state=SSL3_ST_CW_CHANGE_A;
520 case SSL3_ST_CW_FLUSH:
521 /* number of bytes to be flushed */
522 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
525 s->rwstate=SSL_WRITING;
526 num1=BIO_flush(s->wbio);
527 if (num1 <= 0) { ret= -1; goto end; }
528 s->rwstate=SSL_NOTHING;
531 s->state=s->s3->tmp.next_state;
535 /* clean a few things up */
536 ssl3_cleanup_key_block(s);
538 if (s->init_buf != NULL)
540 BUF_MEM_free(s->init_buf);
544 /* If we are not 'joining' the last two packets,
545 * remove the buffering now */
546 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
547 ssl_free_wbio_buffer(s);
548 /* else do it later in ssl3_write */
553 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
554 if (s->hit) s->ctx->stats.sess_hit++;
558 s->handshake_func=ssl3_connect;
559 s->ctx->stats.sess_connect_good++;
561 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
567 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
573 /* did we do anything */
574 if (!s->s3->tmp.reuse_message && !skip)
578 if ((ret=BIO_flush(s->wbio)) <= 0)
582 if ((cb != NULL) && (s->state != state))
586 cb(s,SSL_CB_CONNECT_LOOP,1);
597 cb(s,SSL_CB_CONNECT_EXIT,ret);
602 int ssl3_client_hello(SSL *s)
607 unsigned long Time,l;
608 #ifndef OPENSSL_NO_COMP
613 buf=(unsigned char *)s->init_buf->data;
614 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
616 if ((s->session == NULL) ||
617 (s->session->ssl_version != s->version) ||
618 (s->session->not_resumable))
620 if (!ssl_get_new_session(s,0))
623 /* else use the pre-loaded session */
625 p=s->s3->client_random;
626 Time=(unsigned long)time(NULL); /* Time */
628 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
631 /* Do the message type and length last */
634 *(p++)=s->version>>8;
635 *(p++)=s->version&0xff;
636 s->client_version=s->version;
639 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
646 i=s->session->session_id_length;
650 if (i > (int)sizeof(s->session->session_id))
652 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
655 memcpy(p,s->session->session_id,i);
659 /* Ciphers supported */
660 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
663 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
670 #ifdef OPENSSL_NO_COMP
674 if ((s->options & SSL_OP_NO_COMPRESSION)
675 || !s->ctx->comp_methods)
678 j=sk_SSL_COMP_num(s->ctx->comp_methods);
682 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
686 *(p++)=0; /* Add the NULL method */
688 #ifndef OPENSSL_NO_TLSEXT
690 if (ssl_prepare_clienthello_tlsext(s) <= 0)
692 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
695 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
697 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
704 *(d++)=SSL3_MT_CLIENT_HELLO;
707 s->state=SSL3_ST_CW_CLNT_HELLO_B;
708 /* number of bytes to write */
713 /* SSL3_ST_CW_CLNT_HELLO_B */
714 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
719 int ssl3_get_server_hello(SSL *s)
721 STACK_OF(SSL_CIPHER) *sk;
727 #ifndef OPENSSL_NO_COMP
731 n=s->method->ssl_get_message(s,
732 SSL3_ST_CR_SRVR_HELLO_A,
733 SSL3_ST_CR_SRVR_HELLO_B,
738 if (!ok) return((int)n);
740 if ( SSL_version(s) == DTLS1_VERSION)
742 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
744 if ( s->d1->send_cookie == 0)
746 s->s3->tmp.reuse_message = 1;
749 else /* already sent a cookie */
751 al=SSL_AD_UNEXPECTED_MESSAGE;
752 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
758 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
760 al=SSL_AD_UNEXPECTED_MESSAGE;
761 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
765 d=p=(unsigned char *)s->init_msg;
767 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
769 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
770 s->version=(s->version&0xff00)|p[1];
771 al=SSL_AD_PROTOCOL_VERSION;
776 /* load the server hello data */
777 /* load the server random */
778 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
781 /* get the session-id */
784 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
786 al=SSL_AD_ILLEGAL_PARAMETER;
787 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
791 if (j != 0 && j == s->session->session_id_length
792 && memcmp(p,s->session->session_id,j) == 0)
794 if(s->sid_ctx_length != s->session->sid_ctx_length
795 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
797 /* actually a client application bug */
798 al=SSL_AD_ILLEGAL_PARAMETER;
799 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
804 else /* a miss or crap from the other end */
806 /* If we were trying for session-id reuse, make a new
807 * SSL_SESSION so we don't stuff up other people */
809 if (s->session->session_id_length > 0)
811 if (!ssl_get_new_session(s,0))
813 al=SSL_AD_INTERNAL_ERROR;
817 s->session->session_id_length=j;
818 memcpy(s->session->session_id,p,j); /* j could be 0 */
821 c=ssl_get_cipher_by_char(s,p);
825 al=SSL_AD_ILLEGAL_PARAMETER;
826 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
829 p+=ssl_put_cipher_by_char(s,NULL,NULL);
831 sk=ssl_get_ciphers_by_id(s);
832 i=sk_SSL_CIPHER_find(sk,c);
835 /* we did not say we would use this cipher */
836 al=SSL_AD_ILLEGAL_PARAMETER;
837 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
841 /* Depending on the session caching (internal/external), the cipher
842 and/or cipher_id values may not be set. Make sure that
843 cipher_id is set and use it for comparison. */
844 if (s->session->cipher)
845 s->session->cipher_id = s->session->cipher->id;
846 if (s->hit && (s->session->cipher_id != c->id))
849 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
851 al=SSL_AD_ILLEGAL_PARAMETER;
852 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
856 s->s3->tmp.new_cipher=c;
857 ssl3_digest_cached_records(s);
859 /* lets get the compression algorithm */
861 #ifdef OPENSSL_NO_COMP
864 al=SSL_AD_ILLEGAL_PARAMETER;
865 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
870 if ((j == 0) || (s->options & SSL_OP_NO_COMPRESSION))
873 comp=ssl3_comp_find(s->ctx->comp_methods,j);
875 if ((j != 0) && (comp == NULL))
877 al=SSL_AD_ILLEGAL_PARAMETER;
878 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
883 s->s3->tmp.new_compression=comp;
887 #ifndef OPENSSL_NO_TLSEXT
889 if (s->version > SSL3_VERSION)
891 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
893 /* 'al' set by ssl_parse_serverhello_tlsext */
894 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
897 if (ssl_check_serverhello_tlsext(s) <= 0)
899 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
907 /* wrong packet length */
908 al=SSL_AD_DECODE_ERROR;
909 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
915 ssl3_send_alert(s,SSL3_AL_FATAL,al);
920 int ssl3_get_server_certificate(SSL *s)
923 unsigned long n,nc,llen,l;
925 const unsigned char *q,*p;
927 STACK_OF(X509) *sk=NULL;
930 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
932 n=s->method->ssl_get_message(s,
939 if (!ok) return((int)n);
941 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
943 s->s3->tmp.reuse_message=1;
947 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
949 al=SSL_AD_UNEXPECTED_MESSAGE;
950 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
953 p=d=(unsigned char *)s->init_msg;
955 if ((sk=sk_X509_new_null()) == NULL)
957 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
964 al=SSL_AD_DECODE_ERROR;
965 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
968 for (nc=0; nc<llen; )
973 al=SSL_AD_DECODE_ERROR;
974 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
979 x=d2i_X509(NULL,&q,l);
982 al=SSL_AD_BAD_CERTIFICATE;
983 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
988 al=SSL_AD_DECODE_ERROR;
989 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
992 if (!sk_X509_push(sk,x))
994 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1002 i=ssl_verify_cert_chain(s,sk);
1003 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)
1004 #ifndef OPENSSL_NO_KRB5
1005 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1006 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1007 #endif /* OPENSSL_NO_KRB5 */
1010 al=ssl_verify_alarm_type(s->verify_result);
1011 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1014 ERR_clear_error(); /* but we keep s->verify_result */
1016 sc=ssl_sess_cert_new();
1017 if (sc == NULL) goto err;
1019 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1020 s->session->sess_cert=sc;
1023 /* Inconsistency alert: cert_chain does include the peer's
1024 * certificate, which we don't include in s3_srvr.c */
1025 x=sk_X509_value(sk,0);
1027 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1029 pkey=X509_get_pubkey(x);
1031 /* VRS: allow null cert if auth == KRB5 */
1032 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1033 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1037 printf("pkey,x = %p, %p\n", (void *)pkey,(void *)x);
1038 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1039 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1040 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1041 #endif /* KSSL_DEBUG */
1043 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1047 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1048 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1052 i=ssl_cert_type(x,pkey);
1053 if (need_cert && i < 0)
1057 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1058 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1064 sc->peer_cert_type=i;
1065 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1066 /* Why would the following ever happen?
1067 * We just created sc a couple of lines ago. */
1068 if (sc->peer_pkeys[i].x509 != NULL)
1069 X509_free(sc->peer_pkeys[i].x509);
1070 sc->peer_pkeys[i].x509=x;
1071 sc->peer_key= &(sc->peer_pkeys[i]);
1073 if (s->session->peer != NULL)
1074 X509_free(s->session->peer);
1075 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1080 sc->peer_cert_type=i;
1083 if (s->session->peer != NULL)
1084 X509_free(s->session->peer);
1085 s->session->peer=NULL;
1087 s->session->verify_result = s->verify_result;
1095 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1098 EVP_PKEY_free(pkey);
1100 sk_X509_pop_free(sk,X509_free);
1104 int ssl3_get_key_exchange(SSL *s)
1106 #ifndef OPENSSL_NO_RSA
1107 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1110 unsigned char *param,*p;
1111 int al,i,j,param_len,ok;
1113 EVP_PKEY *pkey=NULL;
1114 #ifndef OPENSSL_NO_RSA
1117 #ifndef OPENSSL_NO_DH
1120 #ifndef OPENSSL_NO_ECDH
1121 EC_KEY *ecdh = NULL;
1122 BN_CTX *bn_ctx = NULL;
1123 EC_POINT *srvr_ecpoint = NULL;
1125 int encoded_pt_len = 0;
1128 /* use same message size as in ssl3_get_certificate_request()
1129 * as ServerKeyExchange message may be skipped */
1130 n=s->method->ssl_get_message(s,
1131 SSL3_ST_CR_KEY_EXCH_A,
1132 SSL3_ST_CR_KEY_EXCH_B,
1136 if (!ok) return((int)n);
1138 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1140 #ifndef OPENSSL_NO_PSK
1141 /* In plain PSK ciphersuite, ServerKeyExchange can be
1142 omitted if no identity hint is sent. Set
1143 session->sess_cert anyway to avoid problems
1145 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1147 s->session->sess_cert=ssl_sess_cert_new();
1148 if (s->ctx->psk_identity_hint)
1149 OPENSSL_free(s->ctx->psk_identity_hint);
1150 s->ctx->psk_identity_hint = NULL;
1153 s->s3->tmp.reuse_message=1;
1157 param=p=(unsigned char *)s->init_msg;
1158 if (s->session->sess_cert != NULL)
1160 #ifndef OPENSSL_NO_RSA
1161 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1163 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1164 s->session->sess_cert->peer_rsa_tmp=NULL;
1167 #ifndef OPENSSL_NO_DH
1168 if (s->session->sess_cert->peer_dh_tmp)
1170 DH_free(s->session->sess_cert->peer_dh_tmp);
1171 s->session->sess_cert->peer_dh_tmp=NULL;
1174 #ifndef OPENSSL_NO_ECDH
1175 if (s->session->sess_cert->peer_ecdh_tmp)
1177 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1178 s->session->sess_cert->peer_ecdh_tmp=NULL;
1184 s->session->sess_cert=ssl_sess_cert_new();
1188 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1189 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1190 EVP_MD_CTX_init(&md_ctx);
1192 #ifndef OPENSSL_NO_PSK
1193 if (alg_k & SSL_kPSK)
1195 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1197 al=SSL_AD_HANDSHAKE_FAILURE;
1200 /* Store PSK identity hint for later use, hint is used
1201 * in ssl3_send_client_key_exchange. Assume that the
1202 * maximum length of a PSK identity hint can be as
1203 * long as the maximum length of a PSK identity. */
1204 if (i > PSK_MAX_IDENTITY_LEN)
1206 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1207 SSL_R_DATA_LENGTH_TOO_LONG);
1212 al=SSL_AD_DECODE_ERROR;
1213 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1214 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1217 /* If received PSK identity hint contains NULL
1218 * characters, the hint is truncated from the first
1219 * NULL. p may not be ending with NULL, so create a
1220 * NULL-terminated string. */
1221 memcpy(tmp_id_hint, p, i);
1222 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1223 if (s->ctx->psk_identity_hint != NULL)
1224 OPENSSL_free(s->ctx->psk_identity_hint);
1225 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1226 if (s->ctx->psk_identity_hint == NULL)
1228 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1236 #endif /* !OPENSSL_NO_PSK */
1237 #ifndef OPENSSL_NO_RSA
1238 if (alg_k & SSL_kRSA)
1240 if ((rsa=RSA_new()) == NULL)
1242 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1249 al=SSL_AD_DECODE_ERROR;
1250 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1253 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1255 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1264 al=SSL_AD_DECODE_ERROR;
1265 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1268 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1270 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1276 /* this should be because we are using an export cipher */
1277 if (alg_a & SSL_aRSA)
1278 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1281 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1284 s->session->sess_cert->peer_rsa_tmp=rsa;
1287 #else /* OPENSSL_NO_RSA */
1291 #ifndef OPENSSL_NO_DH
1292 else if (alg_k & SSL_kEDH)
1294 if ((dh=DH_new()) == NULL)
1296 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1303 al=SSL_AD_DECODE_ERROR;
1304 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1307 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1309 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1318 al=SSL_AD_DECODE_ERROR;
1319 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1322 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1324 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1333 al=SSL_AD_DECODE_ERROR;
1334 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1337 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1339 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1345 #ifndef OPENSSL_NO_RSA
1346 if (alg_a & SSL_aRSA)
1347 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1352 #ifndef OPENSSL_NO_DSA
1353 else if (alg_a & SSL_aDSS)
1354 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1356 /* else anonymous DH, so no certificate or pkey. */
1358 s->session->sess_cert->peer_dh_tmp=dh;
1361 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1363 al=SSL_AD_ILLEGAL_PARAMETER;
1364 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1367 #endif /* !OPENSSL_NO_DH */
1369 #ifndef OPENSSL_NO_ECDH
1370 else if (alg_k & SSL_kEECDH)
1373 const EC_GROUP *group;
1375 if ((ecdh=EC_KEY_new()) == NULL)
1377 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1381 /* Extract elliptic curve parameters and the
1382 * server's ephemeral ECDH public key.
1383 * Keep accumulating lengths of various components in
1384 * param_len and make sure it never exceeds n.
1387 /* XXX: For now we only support named (not generic) curves
1388 * and the ECParameters in this case is just three bytes.
1391 if ((param_len > n) ||
1392 (*p != NAMED_CURVE_TYPE) ||
1393 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1395 al=SSL_AD_INTERNAL_ERROR;
1396 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1400 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1403 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1406 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1408 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1411 EC_GROUP_free(ngroup);
1413 group = EC_KEY_get0_group(ecdh);
1415 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1416 (EC_GROUP_get_degree(group) > 163))
1418 al=SSL_AD_EXPORT_RESTRICTION;
1419 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1425 /* Next, get the encoded ECPoint */
1426 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1427 ((bn_ctx = BN_CTX_new()) == NULL))
1429 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1433 encoded_pt_len = *p; /* length of encoded point */
1435 param_len += (1 + encoded_pt_len);
1436 if ((param_len > n) ||
1437 (EC_POINT_oct2point(group, srvr_ecpoint,
1438 p, encoded_pt_len, bn_ctx) == 0))
1440 al=SSL_AD_DECODE_ERROR;
1441 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1448 /* The ECC/TLS specification does not mention
1449 * the use of DSA to sign ECParameters in the server
1450 * key exchange message. We do support RSA and ECDSA.
1453 #ifndef OPENSSL_NO_RSA
1454 else if (alg_a & SSL_aRSA)
1455 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1457 #ifndef OPENSSL_NO_ECDSA
1458 else if (alg_a & SSL_aECDSA)
1459 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1461 /* else anonymous ECDH, so no certificate or pkey. */
1462 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1463 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1465 BN_CTX_free(bn_ctx);
1466 EC_POINT_free(srvr_ecpoint);
1467 srvr_ecpoint = NULL;
1471 al=SSL_AD_UNEXPECTED_MESSAGE;
1472 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1475 #endif /* !OPENSSL_NO_ECDH */
1478 /* p points to the next byte, there are 'n' bytes left */
1480 /* if it was signed, check the signature */
1485 j=EVP_PKEY_size(pkey);
1487 if ((i != n) || (n > j) || (n <= 0))
1489 /* wrong packet length */
1490 al=SSL_AD_DECODE_ERROR;
1491 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1495 #ifndef OPENSSL_NO_RSA
1496 if (pkey->type == EVP_PKEY_RSA)
1502 for (num=2; num > 0; num--)
1504 EVP_DigestInit_ex(&md_ctx,(num == 2)
1505 ?s->ctx->md5:s->ctx->sha1, NULL);
1506 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1507 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1508 EVP_DigestUpdate(&md_ctx,param,param_len);
1509 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1513 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1517 al=SSL_AD_DECRYPT_ERROR;
1518 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1524 al=SSL_AD_DECRYPT_ERROR;
1525 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1531 #ifndef OPENSSL_NO_DSA
1532 if (pkey->type == EVP_PKEY_DSA)
1535 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1536 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1537 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1538 EVP_VerifyUpdate(&md_ctx,param,param_len);
1539 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1542 al=SSL_AD_DECRYPT_ERROR;
1543 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1549 #ifndef OPENSSL_NO_ECDSA
1550 if (pkey->type == EVP_PKEY_EC)
1552 /* let's do ECDSA */
1553 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1554 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1555 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1556 EVP_VerifyUpdate(&md_ctx,param,param_len);
1557 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1560 al=SSL_AD_DECRYPT_ERROR;
1561 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1568 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1574 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1575 /* aNULL or kPSK do not need public keys */
1577 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1580 /* still data left over */
1583 al=SSL_AD_DECODE_ERROR;
1584 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1588 EVP_PKEY_free(pkey);
1589 EVP_MD_CTX_cleanup(&md_ctx);
1592 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1594 EVP_PKEY_free(pkey);
1595 #ifndef OPENSSL_NO_RSA
1599 #ifndef OPENSSL_NO_DH
1603 #ifndef OPENSSL_NO_ECDH
1604 BN_CTX_free(bn_ctx);
1605 EC_POINT_free(srvr_ecpoint);
1609 EVP_MD_CTX_cleanup(&md_ctx);
1613 int ssl3_get_certificate_request(SSL *s)
1616 unsigned long n,nc,l;
1617 unsigned int llen,ctype_num,i;
1619 const unsigned char *p,*q;
1621 STACK_OF(X509_NAME) *ca_sk=NULL;
1623 n=s->method->ssl_get_message(s,
1624 SSL3_ST_CR_CERT_REQ_A,
1625 SSL3_ST_CR_CERT_REQ_B,
1630 if (!ok) return((int)n);
1632 s->s3->tmp.cert_req=0;
1634 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1636 s->s3->tmp.reuse_message=1;
1640 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1642 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1643 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1647 /* TLS does not like anon-DH with client cert */
1648 if (s->version > SSL3_VERSION)
1650 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1652 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1653 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1658 p=d=(unsigned char *)s->init_msg;
1660 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1662 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1666 /* get the certificate types */
1668 if (ctype_num > SSL3_CT_NUMBER)
1669 ctype_num=SSL3_CT_NUMBER;
1670 for (i=0; i<ctype_num; i++)
1671 s->s3->tmp.ctype[i]= p[i];
1674 /* get the CA RDNs */
1679 out=fopen("/tmp/vsign.der","w");
1680 fwrite(p,1,llen,out);
1685 if ((llen+ctype_num+2+1) != n)
1687 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1688 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1692 for (nc=0; nc<llen; )
1695 if ((l+nc+2) > llen)
1697 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1698 goto cont; /* netscape bugs */
1699 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1700 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1706 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1708 /* If netscape tolerance is on, ignore errors */
1709 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1713 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1714 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1721 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1722 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1725 if (!sk_X509_NAME_push(ca_sk,xn))
1727 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1741 /* we should setup a certificate to return.... */
1742 s->s3->tmp.cert_req=1;
1743 s->s3->tmp.ctype_num=ctype_num;
1744 if (s->s3->tmp.ca_names != NULL)
1745 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1746 s->s3->tmp.ca_names=ca_sk;
1751 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1755 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1757 return(X509_NAME_cmp(*a,*b));
1759 #ifndef OPENSSL_NO_TLSEXT
1760 int ssl3_get_new_session_ticket(SSL *s)
1762 int ok,al,ret=0, ticklen;
1764 const unsigned char *p;
1767 n=s->method->ssl_get_message(s,
1768 SSL3_ST_CR_SESSION_TICKET_A,
1769 SSL3_ST_CR_SESSION_TICKET_B,
1777 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1779 s->s3->tmp.reuse_message=1;
1782 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1784 al=SSL_AD_UNEXPECTED_MESSAGE;
1785 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1790 /* need at least ticket_lifetime_hint + ticket length */
1791 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1792 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1795 p=d=(unsigned char *)s->init_msg;
1796 n2l(p, s->session->tlsext_tick_lifetime_hint);
1798 /* ticket_lifetime_hint + ticket_length + ticket */
1799 if (ticklen + 6 != n)
1801 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1802 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1805 if (s->session->tlsext_tick)
1807 OPENSSL_free(s->session->tlsext_tick);
1808 s->session->tlsext_ticklen = 0;
1810 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1811 if (!s->session->tlsext_tick)
1813 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1816 memcpy(s->session->tlsext_tick, p, ticklen);
1817 s->session->tlsext_ticklen = ticklen;
1822 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1827 int ssl3_get_cert_status(SSL *s)
1830 unsigned long resplen,n;
1831 const unsigned char *p;
1833 n=s->method->ssl_get_message(s,
1834 SSL3_ST_CR_CERT_STATUS_A,
1835 SSL3_ST_CR_CERT_STATUS_B,
1836 SSL3_MT_CERTIFICATE_STATUS,
1840 if (!ok) return((int)n);
1843 /* need at least status type + length */
1844 al = SSL_AD_DECODE_ERROR;
1845 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1848 p = (unsigned char *)s->init_msg;
1849 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1851 al = SSL_AD_DECODE_ERROR;
1852 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
1856 if (resplen + 4 != n)
1858 al = SSL_AD_DECODE_ERROR;
1859 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1862 if (s->tlsext_ocsp_resp)
1863 OPENSSL_free(s->tlsext_ocsp_resp);
1864 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1865 if (!s->tlsext_ocsp_resp)
1867 al = SSL_AD_INTERNAL_ERROR;
1868 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1871 s->tlsext_ocsp_resplen = resplen;
1872 if (s->ctx->tlsext_status_cb)
1875 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1878 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1879 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
1884 al = SSL_AD_INTERNAL_ERROR;
1885 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1891 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1896 int ssl3_get_server_done(SSL *s)
1901 n=s->method->ssl_get_message(s,
1902 SSL3_ST_CR_SRVR_DONE_A,
1903 SSL3_ST_CR_SRVR_DONE_B,
1904 SSL3_MT_SERVER_DONE,
1905 30, /* should be very small, like 0 :-) */
1908 if (!ok) return((int)n);
1911 /* should contain no data */
1912 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1913 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1921 int ssl3_send_client_key_exchange(SSL *s)
1923 unsigned char *p,*d;
1925 unsigned long alg_k;
1926 #ifndef OPENSSL_NO_RSA
1928 EVP_PKEY *pkey=NULL;
1930 #ifndef OPENSSL_NO_KRB5
1932 #endif /* OPENSSL_NO_KRB5 */
1933 #ifndef OPENSSL_NO_ECDH
1934 EC_KEY *clnt_ecdh = NULL;
1935 const EC_POINT *srvr_ecpoint = NULL;
1936 EVP_PKEY *srvr_pub_pkey = NULL;
1937 unsigned char *encodedPoint = NULL;
1938 int encoded_pt_len = 0;
1939 BN_CTX * bn_ctx = NULL;
1942 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1944 d=(unsigned char *)s->init_buf->data;
1947 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1949 /* Fool emacs indentation */
1951 #ifndef OPENSSL_NO_RSA
1952 else if (alg_k & SSL_kRSA)
1955 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1957 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1958 rsa=s->session->sess_cert->peer_rsa_tmp;
1961 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1962 if ((pkey == NULL) ||
1963 (pkey->type != EVP_PKEY_RSA) ||
1964 (pkey->pkey.rsa == NULL))
1966 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1970 EVP_PKEY_free(pkey);
1973 tmp_buf[0]=s->client_version>>8;
1974 tmp_buf[1]=s->client_version&0xff;
1975 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1978 s->session->master_key_length=sizeof tmp_buf;
1981 /* Fix buf for TLS and beyond */
1982 if (s->version > SSL3_VERSION)
1984 n=RSA_public_encrypt(sizeof tmp_buf,
1985 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1987 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1988 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1992 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1996 /* Fix buf for TLS and beyond */
1997 if (s->version > SSL3_VERSION)
2003 s->session->master_key_length=
2004 s->method->ssl3_enc->generate_master_secret(s,
2005 s->session->master_key,
2006 tmp_buf,sizeof tmp_buf);
2007 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2010 #ifndef OPENSSL_NO_KRB5
2011 else if (alg_k & SSL_kKRB5)
2013 krb5_error_code krb5rc;
2014 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2015 /* krb5_data krb5_ap_req; */
2016 krb5_data *enc_ticket;
2017 krb5_data authenticator, *authp = NULL;
2018 EVP_CIPHER_CTX ciph_ctx;
2019 EVP_CIPHER *enc = NULL;
2020 unsigned char iv[EVP_MAX_IV_LENGTH];
2021 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2022 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2023 + EVP_MAX_IV_LENGTH];
2024 int padl, outl = sizeof(epms);
2026 EVP_CIPHER_CTX_init(&ciph_ctx);
2029 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2031 #endif /* KSSL_DEBUG */
2035 if (KRB5SENDAUTH) authp = &authenticator;
2036 #endif /* KRB5SENDAUTH */
2038 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2040 enc = kssl_map_enc(kssl_ctx->enctype);
2045 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2046 if (krb5rc && kssl_err.text)
2047 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2049 #endif /* KSSL_DEBUG */
2053 ssl3_send_alert(s,SSL3_AL_FATAL,
2054 SSL_AD_HANDSHAKE_FAILURE);
2055 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2060 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2061 ** in place of RFC 2712 KerberosWrapper, as in:
2063 ** Send ticket (copy to *p, set n = length)
2064 ** n = krb5_ap_req.length;
2065 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2066 ** if (krb5_ap_req.data)
2067 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2069 ** Now using real RFC 2712 KerberosWrapper
2070 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2071 ** Note: 2712 "opaque" types are here replaced
2072 ** with a 2-byte length followed by the value.
2074 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2075 ** Where "xx xx" = length bytes. Shown here with
2076 ** optional authenticator omitted.
2079 /* KerberosWrapper.Ticket */
2080 s2n(enc_ticket->length,p);
2081 memcpy(p, enc_ticket->data, enc_ticket->length);
2082 p+= enc_ticket->length;
2083 n = enc_ticket->length + 2;
2085 /* KerberosWrapper.Authenticator */
2086 if (authp && authp->length)
2088 s2n(authp->length,p);
2089 memcpy(p, authp->data, authp->length);
2091 n+= authp->length + 2;
2099 s2n(0,p);/* null authenticator length */
2103 tmp_buf[0]=s->client_version>>8;
2104 tmp_buf[1]=s->client_version&0xff;
2105 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2108 /* 20010420 VRS. Tried it this way; failed.
2109 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2110 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2111 ** kssl_ctx->length);
2112 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2115 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2116 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2118 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2120 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2122 if (outl > sizeof epms)
2124 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2127 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2129 /* KerberosWrapper.EncryptedPreMasterSecret */
2131 memcpy(p, epms, outl);
2135 s->session->master_key_length=
2136 s->method->ssl3_enc->generate_master_secret(s,
2137 s->session->master_key,
2138 tmp_buf, sizeof tmp_buf);
2140 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2141 OPENSSL_cleanse(epms, outl);
2144 #ifndef OPENSSL_NO_DH
2145 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2147 DH *dh_srvr,*dh_clnt;
2149 if (s->session->sess_cert == NULL)
2151 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2152 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2156 if (s->session->sess_cert->peer_dh_tmp != NULL)
2157 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2160 /* we get them from the cert */
2161 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2162 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2166 /* generate a new random key */
2167 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2169 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2172 if (!DH_generate_key(dh_clnt))
2174 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2178 /* use the 'p' output buffer for the DH key, but
2179 * make sure to clear it out afterwards */
2181 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2185 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2189 /* generate master key from the result */
2190 s->session->master_key_length=
2191 s->method->ssl3_enc->generate_master_secret(s,
2192 s->session->master_key,p,n);
2196 /* send off the data */
2197 n=BN_num_bytes(dh_clnt->pub_key);
2199 BN_bn2bin(dh_clnt->pub_key,p);
2204 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2208 #ifndef OPENSSL_NO_ECDH
2209 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2211 const EC_GROUP *srvr_group = NULL;
2213 int ecdh_clnt_cert = 0;
2216 /* Did we send out the client's
2217 * ECDH share for use in premaster
2218 * computation as part of client certificate?
2219 * If so, set ecdh_clnt_cert to 1.
2221 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2223 /* XXX: For now, we do not support client
2224 * authentication using ECDH certificates.
2225 * To add such support, one needs to add
2226 * code that checks for appropriate
2227 * conditions and sets ecdh_clnt_cert to 1.
2228 * For example, the cert have an ECC
2229 * key on the same curve as the server's
2230 * and the key should be authorized for
2233 * One also needs to add code in ssl3_connect
2234 * to skip sending the certificate verify
2237 * if ((s->cert->key->privatekey != NULL) &&
2238 * (s->cert->key->privatekey->type ==
2239 * EVP_PKEY_EC) && ...)
2240 * ecdh_clnt_cert = 1;
2244 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2246 tkey = s->session->sess_cert->peer_ecdh_tmp;
2250 /* Get the Server Public Key from Cert */
2251 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2252 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2253 if ((srvr_pub_pkey == NULL) ||
2254 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2255 (srvr_pub_pkey->pkey.ec == NULL))
2257 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2258 ERR_R_INTERNAL_ERROR);
2262 tkey = srvr_pub_pkey->pkey.ec;
2265 srvr_group = EC_KEY_get0_group(tkey);
2266 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2268 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2270 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2271 ERR_R_INTERNAL_ERROR);
2275 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2277 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2281 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2283 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2288 /* Reuse key info from our certificate
2289 * We only need our private key to perform
2290 * the ECDH computation.
2292 const BIGNUM *priv_key;
2293 tkey = s->cert->key->privatekey->pkey.ec;
2294 priv_key = EC_KEY_get0_private_key(tkey);
2295 if (priv_key == NULL)
2297 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2300 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2302 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2308 /* Generate a new ECDH key pair */
2309 if (!(EC_KEY_generate_key(clnt_ecdh)))
2311 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2316 /* use the 'p' output buffer for the ECDH key, but
2317 * make sure to clear it out afterwards
2320 field_size = EC_GROUP_get_degree(srvr_group);
2321 if (field_size <= 0)
2323 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2327 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2330 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2335 /* generate master key from the result */
2336 s->session->master_key_length = s->method->ssl3_enc \
2337 -> generate_master_secret(s,
2338 s->session->master_key,
2341 memset(p, 0, n); /* clean up */
2345 /* Send empty client key exch message */
2350 /* First check the size of encoding and
2351 * allocate memory accordingly.
2354 EC_POINT_point2oct(srvr_group,
2355 EC_KEY_get0_public_key(clnt_ecdh),
2356 POINT_CONVERSION_UNCOMPRESSED,
2359 encodedPoint = (unsigned char *)
2360 OPENSSL_malloc(encoded_pt_len *
2361 sizeof(unsigned char));
2362 bn_ctx = BN_CTX_new();
2363 if ((encodedPoint == NULL) ||
2366 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2370 /* Encode the public key */
2371 n = EC_POINT_point2oct(srvr_group,
2372 EC_KEY_get0_public_key(clnt_ecdh),
2373 POINT_CONVERSION_UNCOMPRESSED,
2374 encodedPoint, encoded_pt_len, bn_ctx);
2376 *p = n; /* length of encoded point */
2377 /* Encoded point will be copied here */
2379 /* copy the point */
2380 memcpy((unsigned char *)p, encodedPoint, n);
2381 /* increment n to account for length field */
2385 /* Free allocated memory */
2386 BN_CTX_free(bn_ctx);
2387 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2388 if (clnt_ecdh != NULL)
2389 EC_KEY_free(clnt_ecdh);
2390 EVP_PKEY_free(srvr_pub_pkey);
2392 #endif /* !OPENSSL_NO_ECDH */
2393 else if (alg_k & SSL_kGOST)
2395 /* GOST key exchange message creation */
2396 EVP_PKEY_CTX *pkey_ctx;
2399 unsigned int md_len;
2401 unsigned char premaster_secret[32],shared_ukm[32];
2402 EVP_MD_CTX *ukm_hash;
2405 /* Get server sertificate PKEY and create ctx from it */
2406 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2408 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2410 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2414 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2415 /* If we have send a certificate, and certificate key
2417 * parameters match those of server certificate, use
2418 * certificate key for key exchange
2421 /* Otherwise, generate ephemeral key pair */
2423 EVP_PKEY_encrypt_init(pkey_ctx);
2424 /* Generate session key */
2425 RAND_bytes(premaster_secret,32);
2426 /* If we have client certificate, use its secret as peer key */
2427 if (s->cert->key->privatekey) {
2428 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <0) {
2429 /* If there was an error - just ignore it. Ephemeral key
2434 /* Set flag "client cert key is used for key
2438 /* Compute shared IV and store it in algorithm-specific
2440 ukm_hash = EVP_MD_CTX_create();
2441 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2442 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2443 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2444 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2445 EVP_MD_CTX_destroy(ukm_hash);
2446 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2448 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2452 /* Make GOST keytransport blob message */
2453 /*Encapsulate it into sequence */
2454 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2457 if (EVP_PKEY_encrypt(pkey_ctx,(unsigned char *)p+1,&msglen,premaster_secret,32)<0) {
2458 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2462 *(p++)= msglen & 0xff;
2464 EVP_PKEY_CTX_free(pkey_ctx);
2465 s->session->master_key_length=
2466 s->method->ssl3_enc->generate_master_secret(s,
2467 s->session->master_key,premaster_secret,32);
2468 EVP_PKEY_free(pub_key);
2471 #ifndef OPENSSL_NO_PSK
2472 else if (alg_k & SSL_kPSK)
2474 char identity[PSK_MAX_IDENTITY_LEN];
2475 unsigned char *t = NULL;
2476 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2477 unsigned int pre_ms_len = 0, psk_len = 0;
2481 if (s->psk_client_callback == NULL)
2483 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2484 SSL_R_PSK_NO_CLIENT_CB);
2488 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2489 identity, PSK_MAX_IDENTITY_LEN,
2490 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2491 if (psk_len > PSK_MAX_PSK_LEN)
2493 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2494 ERR_R_INTERNAL_ERROR);
2497 else if (psk_len == 0)
2499 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2500 SSL_R_PSK_IDENTITY_NOT_FOUND);
2504 /* create PSK pre_master_secret */
2505 pre_ms_len = 2+psk_len+2+psk_len;
2507 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2509 memset(t, 0, psk_len);
2513 if (s->session->psk_identity_hint != NULL)
2514 OPENSSL_free(s->session->psk_identity_hint);
2515 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2516 if (s->ctx->psk_identity_hint != NULL &&
2517 s->session->psk_identity_hint == NULL)
2519 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2520 ERR_R_MALLOC_FAILURE);
2524 if (s->session->psk_identity != NULL)
2525 OPENSSL_free(s->session->psk_identity);
2526 s->session->psk_identity = BUF_strdup(identity);
2527 if (s->session->psk_identity == NULL)
2529 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2530 ERR_R_MALLOC_FAILURE);
2534 s->session->master_key_length =
2535 s->method->ssl3_enc->generate_master_secret(s,
2536 s->session->master_key,
2537 psk_or_pre_ms, pre_ms_len);
2538 n = strlen(identity);
2540 memcpy(p, identity, n);
2544 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2545 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2548 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2555 ssl3_send_alert(s, SSL3_AL_FATAL,
2556 SSL_AD_HANDSHAKE_FAILURE);
2557 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2558 ERR_R_INTERNAL_ERROR);
2562 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2565 s->state=SSL3_ST_CW_KEY_EXCH_B;
2566 /* number of bytes to write */
2571 /* SSL3_ST_CW_KEY_EXCH_B */
2572 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2574 #ifndef OPENSSL_NO_ECDH
2575 BN_CTX_free(bn_ctx);
2576 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2577 if (clnt_ecdh != NULL)
2578 EC_KEY_free(clnt_ecdh);
2579 EVP_PKEY_free(srvr_pub_pkey);
2584 int ssl3_send_client_verify(SSL *s)
2586 unsigned char *p,*d;
2587 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2589 EVP_PKEY_CTX *pctx=NULL;
2590 #ifndef OPENSSL_NO_RSA
2594 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2598 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2600 d=(unsigned char *)s->init_buf->data;
2602 pkey=s->cert->key->privatekey;
2603 /* Create context from key and test if sha1 is allowed as digest */
2604 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2605 EVP_PKEY_sign_init(pctx);
2606 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2608 s->method->ssl3_enc->cert_verify_mac(s,
2610 &(data[MD5_DIGEST_LENGTH]));
2616 #ifndef OPENSSL_NO_RSA
2617 if (pkey->type == EVP_PKEY_RSA)
2619 s->method->ssl3_enc->cert_verify_mac(s,
2622 if (RSA_sign(NID_md5_sha1, data,
2623 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2624 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2626 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2634 #ifndef OPENSSL_NO_DSA
2635 if (pkey->type == EVP_PKEY_DSA)
2637 if (!DSA_sign(pkey->save_type,
2638 &(data[MD5_DIGEST_LENGTH]),
2639 SHA_DIGEST_LENGTH,&(p[2]),
2640 (unsigned int *)&j,pkey->pkey.dsa))
2642 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2650 #ifndef OPENSSL_NO_ECDSA
2651 if (pkey->type == EVP_PKEY_EC)
2653 if (!ECDSA_sign(pkey->save_type,
2654 &(data[MD5_DIGEST_LENGTH]),
2655 SHA_DIGEST_LENGTH,&(p[2]),
2656 (unsigned int *)&j,pkey->pkey.ec))
2658 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2667 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
2669 unsigned char signbuf[64];
2672 s->method->ssl3_enc->cert_verify_mac(s,
2673 NID_id_GostR3411_94,
2675 if (!EVP_PKEY_sign(pctx,signbuf,&sigsize,data,32)) {
2676 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2677 ERR_R_INTERNAL_ERROR);
2680 for (i=63,j=0; i>=0; j++, i--) {
2688 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2691 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2694 s->state=SSL3_ST_CW_CERT_VRFY_B;
2695 s->init_num=(int)n+4;
2698 EVP_PKEY_CTX_free(pctx);
2699 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2701 EVP_PKEY_CTX_free(pctx);
2705 int ssl3_send_client_certificate(SSL *s)
2708 EVP_PKEY *pkey=NULL;
2712 if (s->state == SSL3_ST_CW_CERT_A)
2714 if ((s->cert == NULL) ||
2715 (s->cert->key->x509 == NULL) ||
2716 (s->cert->key->privatekey == NULL))
2717 s->state=SSL3_ST_CW_CERT_B;
2719 s->state=SSL3_ST_CW_CERT_C;
2722 /* We need to get a client cert */
2723 if (s->state == SSL3_ST_CW_CERT_B)
2725 /* If we get an error, we need to
2726 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2727 * We then get retied later */
2729 i = ssl_do_client_cert_cb(s, &x509, &pkey);
2732 s->rwstate=SSL_X509_LOOKUP;
2735 s->rwstate=SSL_NOTHING;
2736 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2738 s->state=SSL3_ST_CW_CERT_B;
2739 if ( !SSL_use_certificate(s,x509) ||
2740 !SSL_use_PrivateKey(s,pkey))
2746 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2749 if (x509 != NULL) X509_free(x509);
2750 if (pkey != NULL) EVP_PKEY_free(pkey);
2753 if (s->version == SSL3_VERSION)
2755 s->s3->tmp.cert_req=0;
2756 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2761 s->s3->tmp.cert_req=2;
2765 /* Ok, we have a cert */
2766 s->state=SSL3_ST_CW_CERT_C;
2769 if (s->state == SSL3_ST_CW_CERT_C)
2771 s->state=SSL3_ST_CW_CERT_D;
2772 l=ssl3_output_cert_chain(s,
2773 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2777 /* SSL3_ST_CW_CERT_D */
2778 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2781 #define has_bits(i,m) (((i)&(m)) == (m))
2783 int ssl3_check_cert_and_algorithm(SSL *s)
2787 EVP_PKEY *pkey=NULL;
2789 #ifndef OPENSSL_NO_RSA
2792 #ifndef OPENSSL_NO_DH
2796 sc=s->session->sess_cert;
2799 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2803 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2804 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
2806 /* we don't have a certificate */
2807 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
2810 #ifndef OPENSSL_NO_RSA
2811 rsa=s->session->sess_cert->peer_rsa_tmp;
2813 #ifndef OPENSSL_NO_DH
2814 dh=s->session->sess_cert->peer_dh_tmp;
2817 /* This is the passed certificate */
2819 idx=sc->peer_cert_type;
2820 #ifndef OPENSSL_NO_ECDH
2821 if (idx == SSL_PKEY_ECC)
2823 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2824 s->s3->tmp.new_cipher) == 0)
2825 { /* check failed */
2826 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2835 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2836 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2837 EVP_PKEY_free(pkey);
2840 /* Check that we have a certificate if we require one */
2841 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2843 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2846 #ifndef OPENSSL_NO_DSA
2847 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2849 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2853 #ifndef OPENSSL_NO_RSA
2854 if ((alg_k & SSL_kRSA) &&
2855 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2857 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2861 #ifndef OPENSSL_NO_DH
2862 if ((alg_k & SSL_kEDH) &&
2863 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2865 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2868 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2870 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2873 #ifndef OPENSSL_NO_DSA
2874 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2876 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2882 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2884 #ifndef OPENSSL_NO_RSA
2885 if (alg_k & SSL_kRSA)
2888 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2890 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2896 #ifndef OPENSSL_NO_DH
2897 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2900 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2902 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2909 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2915 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2920 /* Check to see if handshake is full or resumed. Usually this is just a
2921 * case of checking to see if a cache hit has occurred. In the case of
2922 * session tickets we have to check the next message to be sure.
2925 #ifndef OPENSSL_NO_TLSEXT
2926 static int ssl3_check_finished(SSL *s)
2930 /* If we have no ticket or session ID is non-zero length (a match of
2931 * a non-zero session length would never reach here) it cannot be a
2934 if (!s->session->tlsext_tick || s->session->session_id_length)
2936 /* this function is called when we really expect a Certificate
2937 * message, so permit appropriate message length */
2938 n=s->method->ssl_get_message(s,
2944 if (!ok) return((int)n);
2945 s->s3->tmp.reuse_message = 1;
2946 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
2947 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
2954 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
2957 #ifndef OPENSSL_NO_ENGINE
2958 if (s->ctx->client_cert_engine)
2960 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
2961 SSL_get_client_CA_list(s),
2962 px509, ppkey, NULL, NULL, NULL);
2967 if (s->ctx->client_cert_cb)
2968 i = s->ctx->client_cert_cb(s,px509,ppkey);