mirror of
https://github.com/Mbed-TLS/mbedtls.git
synced 2025-11-03 20:33:16 +03:00
72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/**
|
|
* \file havege.h
|
|
*
|
|
* \brief HAVEGE: HArdware Volatile Entropy Gathering and Expansion
|
|
*
|
|
* Copyright (C) 2006-2013, Brainspark B.V.
|
|
*
|
|
* This file is part of PolarSSL (http://www.polarssl.org)
|
|
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
|
|
*
|
|
* All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
#ifndef POLARSSL_HAVEGE_H
|
|
#define POLARSSL_HAVEGE_H
|
|
|
|
#include <string.h>
|
|
|
|
#define COLLECT_SIZE 1024
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* \brief HAVEGE state structure
|
|
*/
|
|
typedef struct
|
|
{
|
|
int PT1, PT2, offset[2];
|
|
int pool[COLLECT_SIZE];
|
|
int WALK[8192];
|
|
}
|
|
havege_state;
|
|
|
|
/**
|
|
* \brief HAVEGE initialization
|
|
*
|
|
* \param hs HAVEGE state to be initialized
|
|
*/
|
|
void havege_init( havege_state *hs );
|
|
|
|
/**
|
|
* \brief HAVEGE rand function
|
|
*
|
|
* \param p_rng A HAVEGE state
|
|
* \param output Buffer to fill
|
|
* \param len Length of buffer
|
|
*
|
|
* \return 0
|
|
*/
|
|
int havege_random( void *p_rng, unsigned char *output, size_t len );
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* havege.h */
|