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49 lines
1.9 KiB
C
49 lines
1.9 KiB
C
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/**
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* \file doc_rng.h
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*
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* \brief Random number generator (RNG) module documentation file.
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*/
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/*
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*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: GPL-2.0
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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/**
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* @addtogroup rng_module Random number generator (RNG) module
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*
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* The Random number generator (RNG) module provides random number
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* generation, see \c mbedtls_ctr_drbg_random().
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*
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* The block-cipher counter-mode based deterministic random
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* bit generator (CTR_DBRG) as specified in NIST SP800-90. It needs an external
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* source of entropy. For these purposes \c mbedtls_entropy_func() can be used.
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* This is an implementation based on a simple entropy accumulator design.
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*
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* The other number generator that is included is less strong and uses the
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* HAVEGE (HArdware Volatile Entropy Gathering and Expansion) software heuristic
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* which considered unsafe for primary usage, but provides additional random
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* to the entropy pool if enables.
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*
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* Meaning that there seems to be no practical algorithm that can guess
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* the next bit with a probability larger than 1/2 in an output sequence.
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*
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* This module can be used to generate random numbers.
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*/
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