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 #ifndef OPENSSL_NO_TLSEXT
792 /* check if we want to resume the session based on external pre-shared secret */
793 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
795 SSL_CIPHER *pref_cipher=NULL;
796 s->session->master_key_length=sizeof(s->session->master_key);
797 if (s->tls_session_secret_cb(s, s->session->master_key,
798 &s->session->master_key_length,
800 s->tls_session_secret_cb_arg))
802 s->session->cipher = pref_cipher ?
803 pref_cipher : ssl_get_cipher_by_char(s, p+j);
806 #endif /* OPENSSL_NO_TLSEXT */
808 if (j != 0 && j == s->session->session_id_length
809 && memcmp(p,s->session->session_id,j) == 0)
811 if(s->sid_ctx_length != s->session->sid_ctx_length
812 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
814 /* actually a client application bug */
815 al=SSL_AD_ILLEGAL_PARAMETER;
816 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
821 else /* a miss or crap from the other end */
823 /* If we were trying for session-id reuse, make a new
824 * SSL_SESSION so we don't stuff up other people */
826 if (s->session->session_id_length > 0)
828 if (!ssl_get_new_session(s,0))
830 al=SSL_AD_INTERNAL_ERROR;
834 s->session->session_id_length=j;
835 memcpy(s->session->session_id,p,j); /* j could be 0 */
838 c=ssl_get_cipher_by_char(s,p);
842 al=SSL_AD_ILLEGAL_PARAMETER;
843 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
846 p+=ssl_put_cipher_by_char(s,NULL,NULL);
848 sk=ssl_get_ciphers_by_id(s);
849 i=sk_SSL_CIPHER_find(sk,c);
852 /* we did not say we would use this cipher */
853 al=SSL_AD_ILLEGAL_PARAMETER;
854 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
858 /* Depending on the session caching (internal/external), the cipher
859 and/or cipher_id values may not be set. Make sure that
860 cipher_id is set and use it for comparison. */
861 if (s->session->cipher)
862 s->session->cipher_id = s->session->cipher->id;
863 if (s->hit && (s->session->cipher_id != c->id))
866 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
868 al=SSL_AD_ILLEGAL_PARAMETER;
869 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
873 s->s3->tmp.new_cipher=c;
874 if (!ssl3_digest_cached_records(s))
877 /* lets get the compression algorithm */
879 #ifdef OPENSSL_NO_COMP
882 al=SSL_AD_ILLEGAL_PARAMETER;
883 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
888 if ((j == 0) || (s->options & SSL_OP_NO_COMPRESSION))
891 comp=ssl3_comp_find(s->ctx->comp_methods,j);
893 if ((j != 0) && (comp == NULL))
895 al=SSL_AD_ILLEGAL_PARAMETER;
896 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
901 s->s3->tmp.new_compression=comp;
905 #ifndef OPENSSL_NO_TLSEXT
907 if (s->version > SSL3_VERSION)
909 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
911 /* 'al' set by ssl_parse_serverhello_tlsext */
912 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
915 if (ssl_check_serverhello_tlsext(s) <= 0)
917 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
925 /* wrong packet length */
926 al=SSL_AD_DECODE_ERROR;
927 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
933 ssl3_send_alert(s,SSL3_AL_FATAL,al);
938 int ssl3_get_server_certificate(SSL *s)
941 unsigned long n,nc,llen,l;
943 const unsigned char *q,*p;
945 STACK_OF(X509) *sk=NULL;
948 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
950 n=s->method->ssl_get_message(s,
957 if (!ok) return((int)n);
959 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
961 s->s3->tmp.reuse_message=1;
965 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
967 al=SSL_AD_UNEXPECTED_MESSAGE;
968 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
971 p=d=(unsigned char *)s->init_msg;
973 if ((sk=sk_X509_new_null()) == NULL)
975 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
982 al=SSL_AD_DECODE_ERROR;
983 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
986 for (nc=0; nc<llen; )
991 al=SSL_AD_DECODE_ERROR;
992 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
997 x=d2i_X509(NULL,&q,l);
1000 al=SSL_AD_BAD_CERTIFICATE;
1001 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1006 al=SSL_AD_DECODE_ERROR;
1007 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1010 if (!sk_X509_push(sk,x))
1012 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1020 i=ssl_verify_cert_chain(s,sk);
1021 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1022 #ifndef OPENSSL_NO_KRB5
1023 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1024 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1025 #endif /* OPENSSL_NO_KRB5 */
1028 al=ssl_verify_alarm_type(s->verify_result);
1029 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1032 ERR_clear_error(); /* but we keep s->verify_result */
1034 sc=ssl_sess_cert_new();
1035 if (sc == NULL) goto err;
1037 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1038 s->session->sess_cert=sc;
1041 /* Inconsistency alert: cert_chain does include the peer's
1042 * certificate, which we don't include in s3_srvr.c */
1043 x=sk_X509_value(sk,0);
1045 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1047 pkey=X509_get_pubkey(x);
1049 /* VRS: allow null cert if auth == KRB5 */
1050 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1051 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1055 printf("pkey,x = %p, %p\n", pkey,x);
1056 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1057 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1058 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1059 #endif /* KSSL_DEBUG */
1061 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1065 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1066 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1070 i=ssl_cert_type(x,pkey);
1071 if (need_cert && i < 0)
1075 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1076 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1082 sc->peer_cert_type=i;
1083 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1084 /* Why would the following ever happen?
1085 * We just created sc a couple of lines ago. */
1086 if (sc->peer_pkeys[i].x509 != NULL)
1087 X509_free(sc->peer_pkeys[i].x509);
1088 sc->peer_pkeys[i].x509=x;
1089 sc->peer_key= &(sc->peer_pkeys[i]);
1091 if (s->session->peer != NULL)
1092 X509_free(s->session->peer);
1093 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1098 sc->peer_cert_type=i;
1101 if (s->session->peer != NULL)
1102 X509_free(s->session->peer);
1103 s->session->peer=NULL;
1105 s->session->verify_result = s->verify_result;
1113 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1116 EVP_PKEY_free(pkey);
1118 sk_X509_pop_free(sk,X509_free);
1122 int ssl3_get_key_exchange(SSL *s)
1124 #ifndef OPENSSL_NO_RSA
1125 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1128 unsigned char *param,*p;
1129 int al,i,j,param_len,ok;
1131 EVP_PKEY *pkey=NULL;
1132 #ifndef OPENSSL_NO_RSA
1135 #ifndef OPENSSL_NO_DH
1138 #ifndef OPENSSL_NO_ECDH
1139 EC_KEY *ecdh = NULL;
1140 BN_CTX *bn_ctx = NULL;
1141 EC_POINT *srvr_ecpoint = NULL;
1143 int encoded_pt_len = 0;
1146 /* use same message size as in ssl3_get_certificate_request()
1147 * as ServerKeyExchange message may be skipped */
1148 n=s->method->ssl_get_message(s,
1149 SSL3_ST_CR_KEY_EXCH_A,
1150 SSL3_ST_CR_KEY_EXCH_B,
1154 if (!ok) return((int)n);
1156 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1158 #ifndef OPENSSL_NO_PSK
1159 /* In plain PSK ciphersuite, ServerKeyExchange can be
1160 omitted if no identity hint is sent. Set
1161 session->sess_cert anyway to avoid problems
1163 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1165 s->session->sess_cert=ssl_sess_cert_new();
1166 if (s->ctx->psk_identity_hint)
1167 OPENSSL_free(s->ctx->psk_identity_hint);
1168 s->ctx->psk_identity_hint = NULL;
1171 s->s3->tmp.reuse_message=1;
1175 param=p=(unsigned char *)s->init_msg;
1176 if (s->session->sess_cert != NULL)
1178 #ifndef OPENSSL_NO_RSA
1179 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1181 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1182 s->session->sess_cert->peer_rsa_tmp=NULL;
1185 #ifndef OPENSSL_NO_DH
1186 if (s->session->sess_cert->peer_dh_tmp)
1188 DH_free(s->session->sess_cert->peer_dh_tmp);
1189 s->session->sess_cert->peer_dh_tmp=NULL;
1192 #ifndef OPENSSL_NO_ECDH
1193 if (s->session->sess_cert->peer_ecdh_tmp)
1195 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1196 s->session->sess_cert->peer_ecdh_tmp=NULL;
1202 s->session->sess_cert=ssl_sess_cert_new();
1206 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1207 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1208 EVP_MD_CTX_init(&md_ctx);
1210 #ifndef OPENSSL_NO_PSK
1211 if (alg_k & SSL_kPSK)
1213 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1215 al=SSL_AD_HANDSHAKE_FAILURE;
1218 /* Store PSK identity hint for later use, hint is used
1219 * in ssl3_send_client_key_exchange. Assume that the
1220 * maximum length of a PSK identity hint can be as
1221 * long as the maximum length of a PSK identity. */
1222 if (i > PSK_MAX_IDENTITY_LEN)
1224 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1225 SSL_R_DATA_LENGTH_TOO_LONG);
1230 al=SSL_AD_DECODE_ERROR;
1231 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1232 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1235 /* If received PSK identity hint contains NULL
1236 * characters, the hint is truncated from the first
1237 * NULL. p may not be ending with NULL, so create a
1238 * NULL-terminated string. */
1239 memcpy(tmp_id_hint, p, i);
1240 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1241 if (s->ctx->psk_identity_hint != NULL)
1242 OPENSSL_free(s->ctx->psk_identity_hint);
1243 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1244 if (s->ctx->psk_identity_hint == NULL)
1246 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1254 #endif /* !OPENSSL_NO_PSK */
1255 #ifndef OPENSSL_NO_RSA
1256 if (alg_k & SSL_kRSA)
1258 if ((rsa=RSA_new()) == NULL)
1260 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1267 al=SSL_AD_DECODE_ERROR;
1268 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1271 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1273 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1282 al=SSL_AD_DECODE_ERROR;
1283 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1286 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1288 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1294 /* this should be because we are using an export cipher */
1295 if (alg_a & SSL_aRSA)
1296 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1299 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1302 s->session->sess_cert->peer_rsa_tmp=rsa;
1305 #else /* OPENSSL_NO_RSA */
1309 #ifndef OPENSSL_NO_DH
1310 else if (alg_k & SSL_kEDH)
1312 if ((dh=DH_new()) == NULL)
1314 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1321 al=SSL_AD_DECODE_ERROR;
1322 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1325 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1327 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1336 al=SSL_AD_DECODE_ERROR;
1337 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1340 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1342 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1351 al=SSL_AD_DECODE_ERROR;
1352 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1355 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1357 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1363 #ifndef OPENSSL_NO_RSA
1364 if (alg_a & SSL_aRSA)
1365 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1370 #ifndef OPENSSL_NO_DSA
1371 else if (alg_a & SSL_aDSS)
1372 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1374 /* else anonymous DH, so no certificate or pkey. */
1376 s->session->sess_cert->peer_dh_tmp=dh;
1379 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1381 al=SSL_AD_ILLEGAL_PARAMETER;
1382 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1385 #endif /* !OPENSSL_NO_DH */
1387 #ifndef OPENSSL_NO_ECDH
1388 else if (alg_k & SSL_kEECDH)
1391 const EC_GROUP *group;
1393 if ((ecdh=EC_KEY_new()) == NULL)
1395 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1399 /* Extract elliptic curve parameters and the
1400 * server's ephemeral ECDH public key.
1401 * Keep accumulating lengths of various components in
1402 * param_len and make sure it never exceeds n.
1405 /* XXX: For now we only support named (not generic) curves
1406 * and the ECParameters in this case is just three bytes.
1409 if ((param_len > n) ||
1410 (*p != NAMED_CURVE_TYPE) ||
1411 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1413 al=SSL_AD_INTERNAL_ERROR;
1414 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1418 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1421 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1424 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1426 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1429 EC_GROUP_free(ngroup);
1431 group = EC_KEY_get0_group(ecdh);
1433 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1434 (EC_GROUP_get_degree(group) > 163))
1436 al=SSL_AD_EXPORT_RESTRICTION;
1437 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1443 /* Next, get the encoded ECPoint */
1444 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1445 ((bn_ctx = BN_CTX_new()) == NULL))
1447 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1451 encoded_pt_len = *p; /* length of encoded point */
1453 param_len += (1 + encoded_pt_len);
1454 if ((param_len > n) ||
1455 (EC_POINT_oct2point(group, srvr_ecpoint,
1456 p, encoded_pt_len, bn_ctx) == 0))
1458 al=SSL_AD_DECODE_ERROR;
1459 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1466 /* The ECC/TLS specification does not mention
1467 * the use of DSA to sign ECParameters in the server
1468 * key exchange message. We do support RSA and ECDSA.
1471 #ifndef OPENSSL_NO_RSA
1472 else if (alg_a & SSL_aRSA)
1473 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1475 #ifndef OPENSSL_NO_ECDSA
1476 else if (alg_a & SSL_aECDSA)
1477 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1479 /* else anonymous ECDH, so no certificate or pkey. */
1480 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1481 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1483 BN_CTX_free(bn_ctx);
1484 EC_POINT_free(srvr_ecpoint);
1485 srvr_ecpoint = NULL;
1489 al=SSL_AD_UNEXPECTED_MESSAGE;
1490 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1493 #endif /* !OPENSSL_NO_ECDH */
1496 /* p points to the next byte, there are 'n' bytes left */
1498 /* if it was signed, check the signature */
1503 j=EVP_PKEY_size(pkey);
1505 if ((i != n) || (n > j) || (n <= 0))
1507 /* wrong packet length */
1508 al=SSL_AD_DECODE_ERROR;
1509 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1513 #ifndef OPENSSL_NO_RSA
1514 if (pkey->type == EVP_PKEY_RSA)
1520 for (num=2; num > 0; num--)
1522 EVP_DigestInit_ex(&md_ctx,(num == 2)
1523 ?s->ctx->md5:s->ctx->sha1, NULL);
1524 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1525 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1526 EVP_DigestUpdate(&md_ctx,param,param_len);
1527 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1531 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1535 al=SSL_AD_DECRYPT_ERROR;
1536 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1542 al=SSL_AD_DECRYPT_ERROR;
1543 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1549 #ifndef OPENSSL_NO_DSA
1550 if (pkey->type == EVP_PKEY_DSA)
1553 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), 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) <= 0)
1560 al=SSL_AD_DECRYPT_ERROR;
1561 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1567 #ifndef OPENSSL_NO_ECDSA
1568 if (pkey->type == EVP_PKEY_EC)
1570 /* let's do ECDSA */
1571 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1572 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1573 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1574 EVP_VerifyUpdate(&md_ctx,param,param_len);
1575 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1578 al=SSL_AD_DECRYPT_ERROR;
1579 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1586 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1592 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1593 /* aNULL or kPSK do not need public keys */
1595 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1598 /* still data left over */
1601 al=SSL_AD_DECODE_ERROR;
1602 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1606 EVP_PKEY_free(pkey);
1607 EVP_MD_CTX_cleanup(&md_ctx);
1610 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1612 EVP_PKEY_free(pkey);
1613 #ifndef OPENSSL_NO_RSA
1617 #ifndef OPENSSL_NO_DH
1621 #ifndef OPENSSL_NO_ECDH
1622 BN_CTX_free(bn_ctx);
1623 EC_POINT_free(srvr_ecpoint);
1627 EVP_MD_CTX_cleanup(&md_ctx);
1631 int ssl3_get_certificate_request(SSL *s)
1634 unsigned long n,nc,l;
1635 unsigned int llen,ctype_num,i;
1637 const unsigned char *p,*q;
1639 STACK_OF(X509_NAME) *ca_sk=NULL;
1641 n=s->method->ssl_get_message(s,
1642 SSL3_ST_CR_CERT_REQ_A,
1643 SSL3_ST_CR_CERT_REQ_B,
1648 if (!ok) return((int)n);
1650 s->s3->tmp.cert_req=0;
1652 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1654 s->s3->tmp.reuse_message=1;
1658 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1660 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1661 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1665 /* TLS does not like anon-DH with client cert */
1666 if (s->version > SSL3_VERSION)
1668 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1670 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1671 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1676 p=d=(unsigned char *)s->init_msg;
1678 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1680 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1684 /* get the certificate types */
1686 if (ctype_num > SSL3_CT_NUMBER)
1687 ctype_num=SSL3_CT_NUMBER;
1688 for (i=0; i<ctype_num; i++)
1689 s->s3->tmp.ctype[i]= p[i];
1692 /* get the CA RDNs */
1697 out=fopen("/tmp/vsign.der","w");
1698 fwrite(p,1,llen,out);
1703 if ((llen+ctype_num+2+1) != n)
1705 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1706 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1710 for (nc=0; nc<llen; )
1713 if ((l+nc+2) > llen)
1715 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1716 goto cont; /* netscape bugs */
1717 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1718 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1724 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1726 /* If netscape tolerance is on, ignore errors */
1727 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1731 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1732 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1739 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1740 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1743 if (!sk_X509_NAME_push(ca_sk,xn))
1745 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1759 /* we should setup a certificate to return.... */
1760 s->s3->tmp.cert_req=1;
1761 s->s3->tmp.ctype_num=ctype_num;
1762 if (s->s3->tmp.ca_names != NULL)
1763 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1764 s->s3->tmp.ca_names=ca_sk;
1769 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1773 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1775 return(X509_NAME_cmp(*a,*b));
1777 #ifndef OPENSSL_NO_TLSEXT
1778 int ssl3_get_new_session_ticket(SSL *s)
1780 int ok,al,ret=0, ticklen;
1782 const unsigned char *p;
1785 n=s->method->ssl_get_message(s,
1786 SSL3_ST_CR_SESSION_TICKET_A,
1787 SSL3_ST_CR_SESSION_TICKET_B,
1795 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1797 s->s3->tmp.reuse_message=1;
1800 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1802 al=SSL_AD_UNEXPECTED_MESSAGE;
1803 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1808 /* need at least ticket_lifetime_hint + ticket length */
1809 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1810 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1813 p=d=(unsigned char *)s->init_msg;
1814 n2l(p, s->session->tlsext_tick_lifetime_hint);
1816 /* ticket_lifetime_hint + ticket_length + ticket */
1817 if (ticklen + 6 != n)
1819 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1820 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1823 if (s->session->tlsext_tick)
1825 OPENSSL_free(s->session->tlsext_tick);
1826 s->session->tlsext_ticklen = 0;
1828 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1829 if (!s->session->tlsext_tick)
1831 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1834 memcpy(s->session->tlsext_tick, p, ticklen);
1835 s->session->tlsext_ticklen = ticklen;
1840 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1845 int ssl3_get_cert_status(SSL *s)
1848 unsigned long resplen,n;
1849 const unsigned char *p;
1851 n=s->method->ssl_get_message(s,
1852 SSL3_ST_CR_CERT_STATUS_A,
1853 SSL3_ST_CR_CERT_STATUS_B,
1854 SSL3_MT_CERTIFICATE_STATUS,
1858 if (!ok) return((int)n);
1861 /* need at least status type + length */
1862 al = SSL_AD_DECODE_ERROR;
1863 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1866 p = (unsigned char *)s->init_msg;
1867 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1869 al = SSL_AD_DECODE_ERROR;
1870 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
1874 if (resplen + 4 != n)
1876 al = SSL_AD_DECODE_ERROR;
1877 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1880 if (s->tlsext_ocsp_resp)
1881 OPENSSL_free(s->tlsext_ocsp_resp);
1882 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1883 if (!s->tlsext_ocsp_resp)
1885 al = SSL_AD_INTERNAL_ERROR;
1886 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1889 s->tlsext_ocsp_resplen = resplen;
1890 if (s->ctx->tlsext_status_cb)
1893 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1896 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1897 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
1902 al = SSL_AD_INTERNAL_ERROR;
1903 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1909 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1914 int ssl3_get_server_done(SSL *s)
1919 n=s->method->ssl_get_message(s,
1920 SSL3_ST_CR_SRVR_DONE_A,
1921 SSL3_ST_CR_SRVR_DONE_B,
1922 SSL3_MT_SERVER_DONE,
1923 30, /* should be very small, like 0 :-) */
1926 if (!ok) return((int)n);
1929 /* should contain no data */
1930 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1931 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1939 int ssl3_send_client_key_exchange(SSL *s)
1941 unsigned char *p,*d;
1943 unsigned long alg_k;
1944 #ifndef OPENSSL_NO_RSA
1946 EVP_PKEY *pkey=NULL;
1948 #ifndef OPENSSL_NO_KRB5
1950 #endif /* OPENSSL_NO_KRB5 */
1951 #ifndef OPENSSL_NO_ECDH
1952 EC_KEY *clnt_ecdh = NULL;
1953 const EC_POINT *srvr_ecpoint = NULL;
1954 EVP_PKEY *srvr_pub_pkey = NULL;
1955 unsigned char *encodedPoint = NULL;
1956 int encoded_pt_len = 0;
1957 BN_CTX * bn_ctx = NULL;
1960 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1962 d=(unsigned char *)s->init_buf->data;
1965 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1967 /* Fool emacs indentation */
1969 #ifndef OPENSSL_NO_RSA
1970 else if (alg_k & SSL_kRSA)
1973 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1975 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1976 rsa=s->session->sess_cert->peer_rsa_tmp;
1979 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1980 if ((pkey == NULL) ||
1981 (pkey->type != EVP_PKEY_RSA) ||
1982 (pkey->pkey.rsa == NULL))
1984 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1988 EVP_PKEY_free(pkey);
1991 tmp_buf[0]=s->client_version>>8;
1992 tmp_buf[1]=s->client_version&0xff;
1993 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1996 s->session->master_key_length=sizeof tmp_buf;
1999 /* Fix buf for TLS and beyond */
2000 if (s->version > SSL3_VERSION)
2002 n=RSA_public_encrypt(sizeof tmp_buf,
2003 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2005 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2006 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2010 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2014 /* Fix buf for TLS and beyond */
2015 if (s->version > SSL3_VERSION)
2021 s->session->master_key_length=
2022 s->method->ssl3_enc->generate_master_secret(s,
2023 s->session->master_key,
2024 tmp_buf,sizeof tmp_buf);
2025 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2028 #ifndef OPENSSL_NO_KRB5
2029 else if (alg_k & SSL_kKRB5)
2031 krb5_error_code krb5rc;
2032 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2033 /* krb5_data krb5_ap_req; */
2034 krb5_data *enc_ticket;
2035 krb5_data authenticator, *authp = NULL;
2036 EVP_CIPHER_CTX ciph_ctx;
2037 EVP_CIPHER *enc = NULL;
2038 unsigned char iv[EVP_MAX_IV_LENGTH];
2039 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2040 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2041 + EVP_MAX_IV_LENGTH];
2042 int padl, outl = sizeof(epms);
2044 EVP_CIPHER_CTX_init(&ciph_ctx);
2047 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2049 #endif /* KSSL_DEBUG */
2053 if (KRB5SENDAUTH) authp = &authenticator;
2054 #endif /* KRB5SENDAUTH */
2056 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2058 enc = kssl_map_enc(kssl_ctx->enctype);
2063 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2064 if (krb5rc && kssl_err.text)
2065 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2067 #endif /* KSSL_DEBUG */
2071 ssl3_send_alert(s,SSL3_AL_FATAL,
2072 SSL_AD_HANDSHAKE_FAILURE);
2073 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2078 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2079 ** in place of RFC 2712 KerberosWrapper, as in:
2081 ** Send ticket (copy to *p, set n = length)
2082 ** n = krb5_ap_req.length;
2083 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2084 ** if (krb5_ap_req.data)
2085 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2087 ** Now using real RFC 2712 KerberosWrapper
2088 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2089 ** Note: 2712 "opaque" types are here replaced
2090 ** with a 2-byte length followed by the value.
2092 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2093 ** Where "xx xx" = length bytes. Shown here with
2094 ** optional authenticator omitted.
2097 /* KerberosWrapper.Ticket */
2098 s2n(enc_ticket->length,p);
2099 memcpy(p, enc_ticket->data, enc_ticket->length);
2100 p+= enc_ticket->length;
2101 n = enc_ticket->length + 2;
2103 /* KerberosWrapper.Authenticator */
2104 if (authp && authp->length)
2106 s2n(authp->length,p);
2107 memcpy(p, authp->data, authp->length);
2109 n+= authp->length + 2;
2117 s2n(0,p);/* null authenticator length */
2121 tmp_buf[0]=s->client_version>>8;
2122 tmp_buf[1]=s->client_version&0xff;
2123 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2126 /* 20010420 VRS. Tried it this way; failed.
2127 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2128 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2129 ** kssl_ctx->length);
2130 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2133 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2134 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2136 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2138 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2140 if (outl > sizeof epms)
2142 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2145 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2147 /* KerberosWrapper.EncryptedPreMasterSecret */
2149 memcpy(p, epms, outl);
2153 s->session->master_key_length=
2154 s->method->ssl3_enc->generate_master_secret(s,
2155 s->session->master_key,
2156 tmp_buf, sizeof tmp_buf);
2158 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2159 OPENSSL_cleanse(epms, outl);
2162 #ifndef OPENSSL_NO_DH
2163 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2165 DH *dh_srvr,*dh_clnt;
2167 if (s->session->sess_cert == NULL)
2169 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2170 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2174 if (s->session->sess_cert->peer_dh_tmp != NULL)
2175 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2178 /* we get them from the cert */
2179 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2180 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2184 /* generate a new random key */
2185 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2187 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2190 if (!DH_generate_key(dh_clnt))
2192 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2196 /* use the 'p' output buffer for the DH key, but
2197 * make sure to clear it out afterwards */
2199 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2203 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2207 /* generate master key from the result */
2208 s->session->master_key_length=
2209 s->method->ssl3_enc->generate_master_secret(s,
2210 s->session->master_key,p,n);
2214 /* send off the data */
2215 n=BN_num_bytes(dh_clnt->pub_key);
2217 BN_bn2bin(dh_clnt->pub_key,p);
2222 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2226 #ifndef OPENSSL_NO_ECDH
2227 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2229 const EC_GROUP *srvr_group = NULL;
2231 int ecdh_clnt_cert = 0;
2234 /* Did we send out the client's
2235 * ECDH share for use in premaster
2236 * computation as part of client certificate?
2237 * If so, set ecdh_clnt_cert to 1.
2239 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2241 /* XXX: For now, we do not support client
2242 * authentication using ECDH certificates.
2243 * To add such support, one needs to add
2244 * code that checks for appropriate
2245 * conditions and sets ecdh_clnt_cert to 1.
2246 * For example, the cert have an ECC
2247 * key on the same curve as the server's
2248 * and the key should be authorized for
2251 * One also needs to add code in ssl3_connect
2252 * to skip sending the certificate verify
2255 * if ((s->cert->key->privatekey != NULL) &&
2256 * (s->cert->key->privatekey->type ==
2257 * EVP_PKEY_EC) && ...)
2258 * ecdh_clnt_cert = 1;
2262 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2264 tkey = s->session->sess_cert->peer_ecdh_tmp;
2268 /* Get the Server Public Key from Cert */
2269 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2270 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2271 if ((srvr_pub_pkey == NULL) ||
2272 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2273 (srvr_pub_pkey->pkey.ec == NULL))
2275 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2276 ERR_R_INTERNAL_ERROR);
2280 tkey = srvr_pub_pkey->pkey.ec;
2283 srvr_group = EC_KEY_get0_group(tkey);
2284 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2286 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2288 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2289 ERR_R_INTERNAL_ERROR);
2293 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2295 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2299 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2301 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2306 /* Reuse key info from our certificate
2307 * We only need our private key to perform
2308 * the ECDH computation.
2310 const BIGNUM *priv_key;
2311 tkey = s->cert->key->privatekey->pkey.ec;
2312 priv_key = EC_KEY_get0_private_key(tkey);
2313 if (priv_key == NULL)
2315 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2318 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2320 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2326 /* Generate a new ECDH key pair */
2327 if (!(EC_KEY_generate_key(clnt_ecdh)))
2329 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2334 /* use the 'p' output buffer for the ECDH key, but
2335 * make sure to clear it out afterwards
2338 field_size = EC_GROUP_get_degree(srvr_group);
2339 if (field_size <= 0)
2341 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2345 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2348 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2353 /* generate master key from the result */
2354 s->session->master_key_length = s->method->ssl3_enc \
2355 -> generate_master_secret(s,
2356 s->session->master_key,
2359 memset(p, 0, n); /* clean up */
2363 /* Send empty client key exch message */
2368 /* First check the size of encoding and
2369 * allocate memory accordingly.
2372 EC_POINT_point2oct(srvr_group,
2373 EC_KEY_get0_public_key(clnt_ecdh),
2374 POINT_CONVERSION_UNCOMPRESSED,
2377 encodedPoint = (unsigned char *)
2378 OPENSSL_malloc(encoded_pt_len *
2379 sizeof(unsigned char));
2380 bn_ctx = BN_CTX_new();
2381 if ((encodedPoint == NULL) ||
2384 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2388 /* Encode the public key */
2389 n = EC_POINT_point2oct(srvr_group,
2390 EC_KEY_get0_public_key(clnt_ecdh),
2391 POINT_CONVERSION_UNCOMPRESSED,
2392 encodedPoint, encoded_pt_len, bn_ctx);
2394 *p = n; /* length of encoded point */
2395 /* Encoded point will be copied here */
2397 /* copy the point */
2398 memcpy((unsigned char *)p, encodedPoint, n);
2399 /* increment n to account for length field */
2403 /* Free allocated memory */
2404 BN_CTX_free(bn_ctx);
2405 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2406 if (clnt_ecdh != NULL)
2407 EC_KEY_free(clnt_ecdh);
2408 EVP_PKEY_free(srvr_pub_pkey);
2410 #endif /* !OPENSSL_NO_ECDH */
2411 else if (alg_k & SSL_kGOST)
2413 /* GOST key exchange message creation */
2414 EVP_PKEY_CTX *pkey_ctx;
2417 unsigned int md_len;
2419 unsigned char premaster_secret[32],shared_ukm[32];
2420 EVP_MD_CTX *ukm_hash;
2423 /* Get server sertificate PKEY and create ctx from it */
2424 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2426 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2428 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2432 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2433 /* If we have send a certificate, and certificate key
2435 * parameters match those of server certificate, use
2436 * certificate key for key exchange
2439 /* Otherwise, generate ephemeral key pair */
2441 EVP_PKEY_encrypt_init(pkey_ctx);
2442 /* Generate session key */
2443 RAND_bytes(premaster_secret,32);
2444 /* If we have client certificate, use its secret as peer key */
2445 if (s->cert->key->privatekey) {
2446 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <0) {
2447 /* If there was an error - just ignore it. Ephemeral key
2452 /* Set flag "client cert key is used for key
2456 /* Compute shared IV and store it in algorithm-specific
2458 ukm_hash = EVP_MD_CTX_create();
2459 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2460 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2461 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2462 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2463 EVP_MD_CTX_destroy(ukm_hash);
2464 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2466 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2470 /* Make GOST keytransport blob message */
2471 /*Encapsulate it into sequence */
2472 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2475 if (EVP_PKEY_encrypt(pkey_ctx,(unsigned char *)p+1,&msglen,premaster_secret,32)<0) {
2476 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2480 *(p++)= msglen & 0xff;
2482 EVP_PKEY_CTX_free(pkey_ctx);
2483 s->session->master_key_length=
2484 s->method->ssl3_enc->generate_master_secret(s,
2485 s->session->master_key,premaster_secret,32);
2486 EVP_PKEY_free(pub_key);
2489 #ifndef OPENSSL_NO_PSK
2490 else if (alg_k & SSL_kPSK)
2492 char identity[PSK_MAX_IDENTITY_LEN];
2493 unsigned char *t = NULL;
2494 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2495 unsigned int pre_ms_len = 0, psk_len = 0;
2499 if (s->psk_client_callback == NULL)
2501 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2502 SSL_R_PSK_NO_CLIENT_CB);
2506 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2507 identity, PSK_MAX_IDENTITY_LEN,
2508 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2509 if (psk_len > PSK_MAX_PSK_LEN)
2511 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2512 ERR_R_INTERNAL_ERROR);
2515 else if (psk_len == 0)
2517 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2518 SSL_R_PSK_IDENTITY_NOT_FOUND);
2522 /* create PSK pre_master_secret */
2523 pre_ms_len = 2+psk_len+2+psk_len;
2525 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2527 memset(t, 0, psk_len);
2531 if (s->session->psk_identity_hint != NULL)
2532 OPENSSL_free(s->session->psk_identity_hint);
2533 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2534 if (s->ctx->psk_identity_hint != NULL &&
2535 s->session->psk_identity_hint == NULL)
2537 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2538 ERR_R_MALLOC_FAILURE);
2542 if (s->session->psk_identity != NULL)
2543 OPENSSL_free(s->session->psk_identity);
2544 s->session->psk_identity = BUF_strdup(identity);
2545 if (s->session->psk_identity == NULL)
2547 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2548 ERR_R_MALLOC_FAILURE);
2552 s->session->master_key_length =
2553 s->method->ssl3_enc->generate_master_secret(s,
2554 s->session->master_key,
2555 psk_or_pre_ms, pre_ms_len);
2556 n = strlen(identity);
2558 memcpy(p, identity, n);
2562 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2563 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2566 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2573 ssl3_send_alert(s, SSL3_AL_FATAL,
2574 SSL_AD_HANDSHAKE_FAILURE);
2575 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2576 ERR_R_INTERNAL_ERROR);
2580 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2583 s->state=SSL3_ST_CW_KEY_EXCH_B;
2584 /* number of bytes to write */
2589 /* SSL3_ST_CW_KEY_EXCH_B */
2590 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2592 #ifndef OPENSSL_NO_ECDH
2593 BN_CTX_free(bn_ctx);
2594 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2595 if (clnt_ecdh != NULL)
2596 EC_KEY_free(clnt_ecdh);
2597 EVP_PKEY_free(srvr_pub_pkey);
2602 int ssl3_send_client_verify(SSL *s)
2604 unsigned char *p,*d;
2605 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2607 EVP_PKEY_CTX *pctx=NULL;
2608 #ifndef OPENSSL_NO_RSA
2612 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2616 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2618 d=(unsigned char *)s->init_buf->data;
2620 pkey=s->cert->key->privatekey;
2621 /* Create context from key and test if sha1 is allowed as digest */
2622 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2623 EVP_PKEY_sign_init(pctx);
2624 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2626 s->method->ssl3_enc->cert_verify_mac(s,
2628 &(data[MD5_DIGEST_LENGTH]));
2634 #ifndef OPENSSL_NO_RSA
2635 if (pkey->type == EVP_PKEY_RSA)
2637 s->method->ssl3_enc->cert_verify_mac(s,
2640 if (RSA_sign(NID_md5_sha1, data,
2641 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2642 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2644 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2652 #ifndef OPENSSL_NO_DSA
2653 if (pkey->type == EVP_PKEY_DSA)
2655 if (!DSA_sign(pkey->save_type,
2656 &(data[MD5_DIGEST_LENGTH]),
2657 SHA_DIGEST_LENGTH,&(p[2]),
2658 (unsigned int *)&j,pkey->pkey.dsa))
2660 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2668 #ifndef OPENSSL_NO_ECDSA
2669 if (pkey->type == EVP_PKEY_EC)
2671 if (!ECDSA_sign(pkey->save_type,
2672 &(data[MD5_DIGEST_LENGTH]),
2673 SHA_DIGEST_LENGTH,&(p[2]),
2674 (unsigned int *)&j,pkey->pkey.ec))
2676 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2685 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
2687 unsigned char signbuf[64];
2690 s->method->ssl3_enc->cert_verify_mac(s,
2691 NID_id_GostR3411_94,
2693 if (!EVP_PKEY_sign(pctx,signbuf,&sigsize,data,32)) {
2694 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2695 ERR_R_INTERNAL_ERROR);
2698 for (i=63,j=0; i>=0; j++, i--) {
2706 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2709 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2712 s->state=SSL3_ST_CW_CERT_VRFY_B;
2713 s->init_num=(int)n+4;
2716 EVP_PKEY_CTX_free(pctx);
2717 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2719 EVP_PKEY_CTX_free(pctx);
2723 int ssl3_send_client_certificate(SSL *s)
2726 EVP_PKEY *pkey=NULL;
2730 if (s->state == SSL3_ST_CW_CERT_A)
2732 if ((s->cert == NULL) ||
2733 (s->cert->key->x509 == NULL) ||
2734 (s->cert->key->privatekey == NULL))
2735 s->state=SSL3_ST_CW_CERT_B;
2737 s->state=SSL3_ST_CW_CERT_C;
2740 /* We need to get a client cert */
2741 if (s->state == SSL3_ST_CW_CERT_B)
2743 /* If we get an error, we need to
2744 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2745 * We then get retied later */
2747 i = ssl_do_client_cert_cb(s, &x509, &pkey);
2750 s->rwstate=SSL_X509_LOOKUP;
2753 s->rwstate=SSL_NOTHING;
2754 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2756 s->state=SSL3_ST_CW_CERT_B;
2757 if ( !SSL_use_certificate(s,x509) ||
2758 !SSL_use_PrivateKey(s,pkey))
2764 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2767 if (x509 != NULL) X509_free(x509);
2768 if (pkey != NULL) EVP_PKEY_free(pkey);
2771 if (s->version == SSL3_VERSION)
2773 s->s3->tmp.cert_req=0;
2774 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2779 s->s3->tmp.cert_req=2;
2783 /* Ok, we have a cert */
2784 s->state=SSL3_ST_CW_CERT_C;
2787 if (s->state == SSL3_ST_CW_CERT_C)
2789 s->state=SSL3_ST_CW_CERT_D;
2790 l=ssl3_output_cert_chain(s,
2791 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2795 /* SSL3_ST_CW_CERT_D */
2796 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2799 #define has_bits(i,m) (((i)&(m)) == (m))
2801 int ssl3_check_cert_and_algorithm(SSL *s)
2805 EVP_PKEY *pkey=NULL;
2807 #ifndef OPENSSL_NO_RSA
2810 #ifndef OPENSSL_NO_DH
2814 sc=s->session->sess_cert;
2817 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2821 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2822 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
2824 /* we don't have a certificate */
2825 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
2828 #ifndef OPENSSL_NO_RSA
2829 rsa=s->session->sess_cert->peer_rsa_tmp;
2831 #ifndef OPENSSL_NO_DH
2832 dh=s->session->sess_cert->peer_dh_tmp;
2835 /* This is the passed certificate */
2837 idx=sc->peer_cert_type;
2838 #ifndef OPENSSL_NO_ECDH
2839 if (idx == SSL_PKEY_ECC)
2841 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2842 s->s3->tmp.new_cipher) == 0)
2843 { /* check failed */
2844 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2853 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2854 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2855 EVP_PKEY_free(pkey);
2858 /* Check that we have a certificate if we require one */
2859 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2861 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2864 #ifndef OPENSSL_NO_DSA
2865 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2867 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2871 #ifndef OPENSSL_NO_RSA
2872 if ((alg_k & SSL_kRSA) &&
2873 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2875 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2879 #ifndef OPENSSL_NO_DH
2880 if ((alg_k & SSL_kEDH) &&
2881 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2883 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2886 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2888 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2891 #ifndef OPENSSL_NO_DSA
2892 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2894 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2900 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2902 #ifndef OPENSSL_NO_RSA
2903 if (alg_k & SSL_kRSA)
2906 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2908 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2914 #ifndef OPENSSL_NO_DH
2915 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2918 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2920 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2927 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2933 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2938 /* Check to see if handshake is full or resumed. Usually this is just a
2939 * case of checking to see if a cache hit has occurred. In the case of
2940 * session tickets we have to check the next message to be sure.
2943 #ifndef OPENSSL_NO_TLSEXT
2944 static int ssl3_check_finished(SSL *s)
2948 /* If we have no ticket it cannot be a resumed session. */
2949 if (!s->session->tlsext_tick)
2951 /* this function is called when we really expect a Certificate
2952 * message, so permit appropriate message length */
2953 n=s->method->ssl_get_message(s,
2959 if (!ok) return((int)n);
2960 s->s3->tmp.reuse_message = 1;
2961 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
2962 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
2969 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
2972 #ifndef OPENSSL_NO_ENGINE
2973 if (s->ctx->client_cert_engine)
2975 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
2976 SSL_get_client_CA_list(s),
2977 px509, ppkey, NULL, NULL, NULL);
2982 if (s->ctx->client_cert_cb)
2983 i = s->ctx->client_cert_cb(s,px509,ppkey);