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ecdh.h
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1 /* crypto/ecdh/ecdh.h */
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
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
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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  * ([email protected]). This product includes software written by Tim
66  * Hudson ([email protected]).
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
85 extern "C" {
86 #endif
87 
88 const ECDH_METHOD *ECDH_OpenSSL(void);
89 
92 int ECDH_set_method(EC_KEY *, const ECDH_METHOD *);
93 
94 int 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 
97 int 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);
99 int ECDH_set_ex_data(EC_KEY *d, int idx, void *arg);
100 void *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  */
107 void 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