1160814Ssimon/* crypto/ecdh/ecdh_key.c */ 2160814Ssimon/* ==================================================================== 3160814Ssimon * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 4160814Ssimon * 5160814Ssimon * The Elliptic Curve Public-Key Crypto Library (ECC Code) included 6160814Ssimon * herein is developed by SUN MICROSYSTEMS, INC., and is contributed 7160814Ssimon * to the OpenSSL project. 8160814Ssimon * 9160814Ssimon * The ECC Code is licensed pursuant to the OpenSSL open source 10160814Ssimon * license provided below. 11160814Ssimon * 12160814Ssimon * The ECDH software is originally written by Douglas Stebila of 13160814Ssimon * Sun Microsystems Laboratories. 14160814Ssimon * 15160814Ssimon */ 16160814Ssimon/* ==================================================================== 17160814Ssimon * Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved. 18160814Ssimon * 19160814Ssimon * Redistribution and use in source and binary forms, with or without 20160814Ssimon * modification, are permitted provided that the following conditions 21160814Ssimon * are met: 22160814Ssimon * 23160814Ssimon * 1. Redistributions of source code must retain the above copyright 24280297Sjkim * notice, this list of conditions and the following disclaimer. 25160814Ssimon * 26160814Ssimon * 2. Redistributions in binary form must reproduce the above copyright 27160814Ssimon * notice, this list of conditions and the following disclaimer in 28160814Ssimon * the documentation and/or other materials provided with the 29160814Ssimon * distribution. 30160814Ssimon * 31160814Ssimon * 3. All advertising materials mentioning features or use of this 32160814Ssimon * software must display the following acknowledgment: 33160814Ssimon * "This product includes software developed by the OpenSSL Project 34160814Ssimon * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 35160814Ssimon * 36160814Ssimon * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 37160814Ssimon * endorse or promote products derived from this software without 38160814Ssimon * prior written permission. For written permission, please contact 39160814Ssimon * openssl-core@OpenSSL.org. 40160814Ssimon * 41160814Ssimon * 5. Products derived from this software may not be called "OpenSSL" 42160814Ssimon * nor may "OpenSSL" appear in their names without prior written 43160814Ssimon * permission of the OpenSSL Project. 44160814Ssimon * 45160814Ssimon * 6. Redistributions of any form whatsoever must retain the following 46160814Ssimon * acknowledgment: 47160814Ssimon * "This product includes software developed by the OpenSSL Project 48160814Ssimon * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 49160814Ssimon * 50160814Ssimon * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 51160814Ssimon * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52160814Ssimon * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 53160814Ssimon * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 54160814Ssimon * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 55160814Ssimon * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 56160814Ssimon * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 57160814Ssimon * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58160814Ssimon * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 59160814Ssimon * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 60160814Ssimon * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 61160814Ssimon * OF THE POSSIBILITY OF SUCH DAMAGE. 62160814Ssimon * ==================================================================== 63160814Ssimon * 64160814Ssimon * This product includes cryptographic software written by Eric Young 65160814Ssimon * (eay@cryptsoft.com). This product includes software written by Tim 66160814Ssimon * Hudson (tjh@cryptsoft.com). 67160814Ssimon * 68160814Ssimon */ 69160814Ssimon 70160814Ssimon#include "ech_locl.h" 71160814Ssimon 72160814Ssimonint ECDH_compute_key(void *out, size_t outlen, const EC_POINT *pub_key, 73280297Sjkim EC_KEY *eckey, 74280297Sjkim void *(*KDF) (const void *in, size_t inlen, void *out, 75280297Sjkim size_t *outlen)) 76160814Ssimon{ 77280297Sjkim ECDH_DATA *ecdh = ecdh_check(eckey); 78280297Sjkim if (ecdh == NULL) 79280297Sjkim return 0; 80280297Sjkim return ecdh->meth->compute_key(out, outlen, pub_key, eckey, KDF); 81160814Ssimon} 82