iq-seeder.h

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/*
 * Copyright (c) 2015, Hasso-Plattner-Institut.
 * All rights reserved.
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/**
 * \addtogroup csprng
 * @{
 *
 * \file
 *         I/Q data-based seeder.
 * \author
 *         Konrad Krentz <konrad.krentz@gmail.com>
 */
 
#ifndef IQ_SEEDER_H_
#define IQ_SEEDER_H_
 
#include "lib/csprng.h"
 
/**
 * \brief This function will feed the CSPRNG with a new seed.
 *
 *        Many manuals of radio chips from Texas Instruments suggest using I/Q
*         data (Cartesian representations of the received signal) for
*         generating true random numbers. This function follows this suggestion
*         and extracts seeds from I/Q data. However, since those manuals state
*         that I/Q data is not uniformly distributed, this function does not use
*         I/Q data directly as seeds, but first applies an extractor function.
*         Note that this function can only be called at start up.
 */
void iq_seeder_seed(void);
 
#endif /* IQ_SEEDER_H_ */
 
/** @} */