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