78 lines
3.1 KiB
C
78 lines
3.1 KiB
C
/****************************************************************************
|
|
* include/sys/random.h
|
|
*
|
|
* Copyright (C) 2015-2017 Haltian Ltd. All rights reserved.
|
|
* Authors: Juha Niskanen <juha.niskanen@haltian.com>
|
|
* Jussi Kivilinna <jussi.kivilinna@haltian.com>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifndef __INCLUDE_SYS_RANDOM_H
|
|
#define __INCLUDE_SYS_RANDOM_H
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
#include <stddef.h>
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_CRYPTO_RANDOM_POOL
|
|
|
|
/****************************************************************************
|
|
* Name: getrandom
|
|
*
|
|
* Description:
|
|
* Fill a buffer of arbitrary length with randomness. This is the
|
|
* preferred interface for getting random numbers. The traditional
|
|
* /dev/random approach is susceptible for things like the attacker
|
|
* exhausting file descriptors on purpose.
|
|
*
|
|
* Note that this function cannot fail, other than by asserting.
|
|
*
|
|
* Parameters:
|
|
* bytes - Buffer for returned random bytes
|
|
* nbytes - Number of bytes requested.
|
|
*
|
|
* Returned Value:
|
|
* None
|
|
*
|
|
****************************************************************************/
|
|
|
|
void getrandom(FAR void *bytes, size_t nbytes);
|
|
|
|
#endif /* CONFIG_CRYPTO_RANDOM_POOL */
|
|
|
|
#endif /* __INCLUDE_SYS_RANDOM_H */
|