Annotation of embedaddon/strongswan/src/libstrongswan/plugins/nonce/nonce_nonceg.c, 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: #include "nonce_nonceg.h"
17:
18: #include <utils/debug.h>
19:
20: typedef struct private_nonce_nonceg_t private_nonce_nonceg_t;
21:
22: /**
23: * Private data of a nonce_nonceg_t object.
24: */
25: struct private_nonce_nonceg_t {
26:
27: /**
28: * Public nonce_nonceg_t interface.
29: */
30: nonce_nonceg_t public;
31:
32: /**
33: * Random number generator
34: */
35: rng_t* rng;
36: };
37:
38: METHOD(nonce_gen_t, get_nonce, bool,
39: private_nonce_nonceg_t *this, size_t size, uint8_t *buffer)
40: {
41: return this->rng->get_bytes(this->rng, size, buffer);
42: }
43:
44: METHOD(nonce_gen_t, allocate_nonce, bool,
45: private_nonce_nonceg_t *this, size_t size, chunk_t *chunk)
46: {
47: return this->rng->allocate_bytes(this->rng, size, chunk);
48: }
49:
50: METHOD(nonce_gen_t, destroy, void,
51: private_nonce_nonceg_t *this)
52: {
53: DESTROY_IF(this->rng);
54: free(this);
55: }
56:
57: /*
58: * Described in header.
59: */
60: nonce_nonceg_t *nonce_nonceg_create()
61: {
62: private_nonce_nonceg_t *this;
63:
64: INIT(this,
65: .public = {
66: .nonce_gen = {
67: .get_nonce = _get_nonce,
68: .allocate_nonce = _allocate_nonce,
69: .destroy = _destroy,
70: },
71: },
72: );
73:
74: this->rng = lib->crypto->create_rng(lib->crypto, NONCE_RNG_QUALITY);
75: if (!this->rng)
76: {
77: DBG1(DBG_LIB, "no RNG found for quality %N", rng_quality_names,
78: RNG_WEAK);
79: destroy(this);
80: return NULL;
81: }
82:
83: return &this->public;
84: }
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