70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
/*
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* Copyright (C) 2007 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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/**
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* @file
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*
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* Null crypto algorithm
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*/
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#include <string.h>
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#include <gpxe/crypto.h>
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static void null_init ( void *ctx __unused ) {
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/* Do nothing */
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}
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static int null_setkey ( void *ctx __unused, const void *key __unused,
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size_t keylen __unused ) {
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/* Do nothing */
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return 0;
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}
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static void null_setiv ( void *ctx __unused, const void *iv __unused ) {
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/* Do nothing */
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}
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static void null_encode ( void *ctx __unused, const void *src,
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void *dst, size_t len ) {
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if ( dst )
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memcpy ( dst, src, len );
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}
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static void null_decode ( void *ctx __unused, const void *src,
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void *dst, size_t len ) {
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if ( dst )
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memcpy ( dst, src, len );
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}
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static void null_final ( void *ctx __unused, void *out __unused ) {
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/* Do nothing */
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}
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struct crypto_algorithm crypto_null = {
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.name = "null",
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.ctxsize = 0,
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.blocksize = 1,
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.digestsize = 0,
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.init = null_init,
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.setkey = null_setkey,
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.setiv = null_setiv,
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.encode = null_encode,
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.decode = null_decode,
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.final = null_final,
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};
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