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cc2538-sram-seeder.h
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/*
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* Copyright (c) 2015, Hasso-Plattner-Institut.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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/**
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* \addtogroup csprng
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* @{
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*
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* \file
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* SRAM-based CSPRNG seeder.
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* \author
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* Konrad Krentz <konrad.krentz@gmail.com>
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*/
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#ifndef CC2538_SRAM_SEEDER_H_
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#define CC2538_SRAM_SEEDER_H_
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#include "
lib/csprng.h
"
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/**
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* \brief This function will feed the CSPRNG with a new seed.
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*
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* Its implementation leverages the fact that SRAM cells are partly
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* random due to manufacturing variations. For randomness extraction,
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* this function uses the well-known von Neumann extractor. Note that
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* this function can only be called at start up and only if
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* LPM_CONF_MAX_PM >= LPM_PM2.
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*/
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void
cc2538_sram_seeder_seed
(
void
);
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#endif
/* CC2538_SRAM_SEEDER_H_ */
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/** @} */
csprng.h
An OFB-AES-128-based CSPRNG.
cc2538_sram_seeder_seed
void cc2538_sram_seeder_seed(void)
This function will feed the CSPRNG with a new seed.
Definition:
cc2538-sram-seeder.c:66
arch
cpu
cc2538
dev
cc2538-sram-seeder.h
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