1*2139Sjp161948 /* crypto/ecdh/ecdh_key.c */
2*2139Sjp161948 /* ====================================================================
3*2139Sjp161948 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
4*2139Sjp161948 *
5*2139Sjp161948 * The Elliptic Curve Public-Key Crypto Library (ECC Code) included
6*2139Sjp161948 * herein is developed by SUN MICROSYSTEMS, INC., and is contributed
7*2139Sjp161948 * to the OpenSSL project.
8*2139Sjp161948 *
9*2139Sjp161948 * The ECC Code is licensed pursuant to the OpenSSL open source
10*2139Sjp161948 * license provided below.
11*2139Sjp161948 *
12*2139Sjp161948 * The ECDH software is originally written by Douglas Stebila of
13*2139Sjp161948 * Sun Microsystems Laboratories.
14*2139Sjp161948 *
15*2139Sjp161948 */
16*2139Sjp161948 /* ====================================================================
17*2139Sjp161948 * Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved.
18*2139Sjp161948 *
19*2139Sjp161948 * Redistribution and use in source and binary forms, with or without
20*2139Sjp161948 * modification, are permitted provided that the following conditions
21*2139Sjp161948 * are met:
22*2139Sjp161948 *
23*2139Sjp161948 * 1. Redistributions of source code must retain the above copyright
24*2139Sjp161948 * notice, this list of conditions and the following disclaimer.
25*2139Sjp161948 *
26*2139Sjp161948 * 2. Redistributions in binary form must reproduce the above copyright
27*2139Sjp161948 * notice, this list of conditions and the following disclaimer in
28*2139Sjp161948 * the documentation and/or other materials provided with the
29*2139Sjp161948 * distribution.
30*2139Sjp161948 *
31*2139Sjp161948 * 3. All advertising materials mentioning features or use of this
32*2139Sjp161948 * software must display the following acknowledgment:
33*2139Sjp161948 * "This product includes software developed by the OpenSSL Project
34*2139Sjp161948 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
35*2139Sjp161948 *
36*2139Sjp161948 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
37*2139Sjp161948 * endorse or promote products derived from this software without
38*2139Sjp161948 * prior written permission. For written permission, please contact
39*2139Sjp161948 * openssl-core@OpenSSL.org.
40*2139Sjp161948 *
41*2139Sjp161948 * 5. Products derived from this software may not be called "OpenSSL"
42*2139Sjp161948 * nor may "OpenSSL" appear in their names without prior written
43*2139Sjp161948 * permission of the OpenSSL Project.
44*2139Sjp161948 *
45*2139Sjp161948 * 6. Redistributions of any form whatsoever must retain the following
46*2139Sjp161948 * acknowledgment:
47*2139Sjp161948 * "This product includes software developed by the OpenSSL Project
48*2139Sjp161948 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
49*2139Sjp161948 *
50*2139Sjp161948 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
51*2139Sjp161948 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52*2139Sjp161948 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
53*2139Sjp161948 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
54*2139Sjp161948 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55*2139Sjp161948 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
56*2139Sjp161948 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
57*2139Sjp161948 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
58*2139Sjp161948 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
59*2139Sjp161948 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
60*2139Sjp161948 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
61*2139Sjp161948 * OF THE POSSIBILITY OF SUCH DAMAGE.
62*2139Sjp161948 * ====================================================================
63*2139Sjp161948 *
64*2139Sjp161948 * This product includes cryptographic software written by Eric Young
65*2139Sjp161948 * (eay@cryptsoft.com). This product includes software written by Tim
66*2139Sjp161948 * Hudson (tjh@cryptsoft.com).
67*2139Sjp161948 *
68*2139Sjp161948 */
69*2139Sjp161948
70*2139Sjp161948 #include "ech_locl.h"
71*2139Sjp161948 #ifndef OPENSSL_NO_ENGINE
72*2139Sjp161948 #include <openssl/engine.h>
73*2139Sjp161948 #endif
74*2139Sjp161948
ECDH_compute_key(void * out,size_t outlen,const EC_POINT * pub_key,EC_KEY * eckey,void * (* KDF)(const void * in,size_t inlen,void * out,size_t * outlen))75*2139Sjp161948 int ECDH_compute_key(void *out, size_t outlen, const EC_POINT *pub_key,
76*2139Sjp161948 EC_KEY *eckey,
77*2139Sjp161948 void *(*KDF)(const void *in, size_t inlen, void *out, size_t *outlen))
78*2139Sjp161948 {
79*2139Sjp161948 ECDH_DATA *ecdh = ecdh_check(eckey);
80*2139Sjp161948 if (ecdh == NULL)
81*2139Sjp161948 return 0;
82*2139Sjp161948 return ecdh->meth->compute_key(out, outlen, pub_key, eckey, KDF);
83*2139Sjp161948 }
84