havege.h

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/*
 *  Copyright The Mbed TLS Contributors
 *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
 *
 *  This file is provided under the Apache License 2.0, or the
 *  GNU General Public License v2.0 or later.
 *
 *  **********
 *  Apache License 2.0:
 *
 *  Licensed under the Apache License, Version 2.0 (the "License"); you may
 *  not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
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 *  **********
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 *  **********
 *  GNU General Public License v2.0 or later:
 *
 *  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
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 */
#ifndef MBEDTLS_HAVEGE_H
#define MBEDTLS_HAVEGE_H
 
#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
 
#include <stddef.h>
 
#define MBEDTLS_HAVEGE_COLLECT_SIZE 1024
 
#ifdef __cplusplus
extern "C" {
#endif
 
typedef struct mbedtls_havege_state
{
    int PT1, PT2, offset[2];
    int pool[MBEDTLS_HAVEGE_COLLECT_SIZE];
    int WALK[8192];
}
mbedtls_havege_state;
 
void mbedtls_havege_init( mbedtls_havege_state *hs );
 
void mbedtls_havege_free( mbedtls_havege_state *hs );
 
int mbedtls_havege_random( void *p_rng, unsigned char *output, size_t len );
 
#ifdef __cplusplus
}
#endif
 
#endif /* havege.h */