Annotation of embedaddon/strongswan/src/libstrongswan/crypto/nonce_gen.h, revision 1.1.1.1
1.1 misho 1: /*
2: * Copyright (C) 2012 Adrian-Ken Rueegsegger
3: * HSR Hochschule fuer Technik Rapperswil
4: *
5: * This program is free software; you can redistribute it and/or modify it
6: * under the terms of the GNU General Public License as published by the
7: * Free Software Foundation; either version 2 of the License, or (at your
8: * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9: *
10: * This program is distributed in the hope that it will be useful, but
11: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13: * for more details.
14: */
15:
16: /**
17: * @defgroup nonce_gen nonce_gen
18: * @{ @ingroup crypto
19: */
20:
21: #ifndef NONCE_GEN_H_
22: #define NONCE_GEN_H_
23:
24: typedef struct nonce_gen_t nonce_gen_t;
25:
26: #include <library.h>
27:
28: /**
29: * Generic interface for nonce generators.
30: */
31: struct nonce_gen_t {
32:
33: /**
34: * Generates a nonce and writes it into the buffer.
35: *
36: * @param size size of nonce in bytes
37: * @param buffer pointer where the generated nonce will be written
38: * @return TRUE if nonce allocation was successful, FALSE otherwise
39: */
40: bool (*get_nonce)(nonce_gen_t *this, size_t size,
41: uint8_t *buffer) __attribute__((warn_unused_result));
42:
43: /**
44: * Generates a nonce and allocates space for it.
45: *
46: * @param size size of nonce in bytes
47: * @param chunk chunk which will hold the generated nonce
48: * @return TRUE if nonce allocation was successful, FALSE otherwise
49: */
50: bool (*allocate_nonce)(nonce_gen_t *this, size_t size,
51: chunk_t *chunk) __attribute__((warn_unused_result));
52:
53: /**
54: * Destroys a nonce generator object.
55: */
56: void (*destroy)(nonce_gen_t *this);
57: };
58:
59: #endif /** NONCE_GEN_H_ @}*/
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