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1/* $OpenBSD: ecdh.h,v 1.2 2014/06/12 15:49:29 deraadt Exp $ */
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) 2000-2002 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 * licensing@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#ifndef HEADER_ECDH_H
70#define HEADER_ECDH_H
71
72#include <openssl/opensslconf.h>
73
74#ifdef OPENSSL_NO_ECDH
75#error ECDH is disabled.
76#endif
77
78#include <openssl/ec.h>
79#include <openssl/ossl_typ.h>
80#ifndef OPENSSL_NO_DEPRECATED
81#include <openssl/bn.h>
82#endif
83
84#ifdef __cplusplus
85extern "C" {
86#endif
87
88const ECDH_METHOD *ECDH_OpenSSL(void);
89
90void ECDH_set_default_method(const ECDH_METHOD *);
91const ECDH_METHOD *ECDH_get_default_method(void);
92int ECDH_set_method(EC_KEY *, const ECDH_METHOD *);
93
94int ECDH_compute_key(void *out, size_t outlen, const EC_POINT *pub_key, EC_KEY *ecdh,
95 void *(*KDF)(const void *in, size_t inlen, void *out, size_t *outlen));
96
97int ECDH_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new
98 *new_func, CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
99int ECDH_set_ex_data(EC_KEY *d, int idx, void *arg);
100void *ECDH_get_ex_data(EC_KEY *d, int idx);
101
102
103/* BEGIN ERROR CODES */
104/* The following lines are auto generated by the script mkerr.pl. Any changes
105 * made after this point may be overwritten when the script is next run.
106 */
107void ERR_load_ECDH_strings(void);
108
109/* Error codes for the ECDH functions. */
110
111/* Function codes. */
112#define ECDH_F_ECDH_CHECK 102
113#define ECDH_F_ECDH_COMPUTE_KEY 100
114#define ECDH_F_ECDH_DATA_NEW_METHOD 101
115
116/* Reason codes. */
117#define ECDH_R_KDF_FAILED 102
118#define ECDH_R_NON_FIPS_METHOD 103
119#define ECDH_R_NO_PRIVATE_VALUE 100
120#define ECDH_R_POINT_ARITHMETIC_FAILURE 101
121
122#ifdef __cplusplus
123}
124#endif
125#endif
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