Annotation of embedaddon/strongswan/src/libstrongswan/plugins/nonce/nonce_nonceg.c, revision 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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