49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
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/*
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* Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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/** @file
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*
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* Entropy source
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*
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*/
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#include <string.h>
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#include <ipxe/entropy.h>
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/**
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* Obtain entropy input
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*
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* @v entropy_bits Minimum amount of entropy, in bits
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* @v data Data buffer
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* @v min_len Minimum length of entropy input, in bytes
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* @v max_len Maximum length of entropy input, in bytes
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* @ret len Length of entropy input, in bytes
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*/
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int get_entropy_input ( unsigned int entropy_bits, void *data, size_t min_len,
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size_t max_len ) {
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/* Placeholder to allow remainder of RBG code to be tested */
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( void ) entropy_bits;
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( void ) min_len;
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memset ( data, 0x01, max_len );
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return max_len;
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}
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