1 /* crypto/ecdh/ech_locl.h */
2 /* ====================================================================
3 * Copyright (c) 2000-2005 The OpenSSL Project. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * licensing@OpenSSL.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 * acknowledgment:
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com). This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
53 *
54 */
55
56 #ifndef HEADER_ECH_LOCL_H
57 #define HEADER_ECH_LOCL_H
58
59 #include <openssl/ecdh.h>
60
61 #ifdef __cplusplus
62 extern "C" {
63 #endif
64
65 struct ecdh_method
66 {
67 const char *name;
68 int (*compute_key)(void *key, size_t outlen, const EC_POINT *pub_key, EC_KEY *ecdh,
69 void *(*KDF)(const void *in, size_t inlen, void *out, size_t *outlen));
70 #if 0
71 int (*init)(EC_KEY *eckey);
72 int (*finish)(EC_KEY *eckey);
73 #endif
74 int flags;
75 char *app_data;
76 };
77
78 /* If this flag is set the ECDH method is FIPS compliant and can be used
79 * in FIPS mode. This is set in the validated module method. If an
80 * application sets this flag in its own methods it is its responsibility
81 * to ensure the result is compliant.
82 */
83
84 #define ECDH_FLAG_FIPS_METHOD 0x1
85
86 typedef struct ecdh_data_st {
87 /* EC_KEY_METH_DATA part */
88 int (*init)(EC_KEY *);
89 /* method specific part */
90 ENGINE *engine;
91 int flags;
92 const ECDH_METHOD *meth;
93 CRYPTO_EX_DATA ex_data;
94 } ECDH_DATA;
95
96 ECDH_DATA *ecdh_check(EC_KEY *);
97
98 #ifdef __cplusplus
99 }
100 #endif
101
102 #endif /* HEADER_ECH_LOCL_H */