mirror of
https://github.com/Mbed-TLS/mbedtls.git
synced 2025-10-30 10:45:34 +03:00
76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/**
|
|
* \file entropy_poll.h
|
|
*
|
|
* \brief Platform-specific and custom entropy polling functions
|
|
*
|
|
* Copyright (C) 2006-2011, 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_ENTROPY_POLL_H
|
|
#define POLARSSL_ENTROPY_POLL_H
|
|
|
|
#include <string.h>
|
|
|
|
#include "config.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*
|
|
* Default thresholds for built-in sources
|
|
*/
|
|
#define ENTROPY_MIN_PLATFORM 128 /**< Minimum for platform source */
|
|
#define ENTROPY_MIN_HAVEGE 128 /**< Minimum for HAVEGE */
|
|
#define ENTROPY_MIN_HARDCLOCK 32 /**< Minimum for hardclock() */
|
|
|
|
#if !defined(POLARSSL_NO_PLATFORM_ENTROPY)
|
|
/**
|
|
* \brief Platform-specific entropy poll callback
|
|
*/
|
|
int platform_entropy_poll( void *data,
|
|
unsigned char *output, size_t len, size_t *olen );
|
|
#endif
|
|
|
|
#if defined(POLARSSL_HAVEGE_C)
|
|
/**
|
|
* \brief HAVEGE based entropy poll callback
|
|
*
|
|
* Requires an HAVEGE state as its data pointer.
|
|
*/
|
|
int havege_poll( void *data,
|
|
unsigned char *output, size_t len, size_t *olen );
|
|
#endif
|
|
|
|
#if defined(POLARSSL_TIMING_C)
|
|
/**
|
|
* \brief hardclock-based entropy poll callback
|
|
*/
|
|
int hardclock_poll( void *data,
|
|
unsigned char *output, size_t len, size_t *olen );
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* entropy_poll.h */
|