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/*
* Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/**
* @file
*
* Null crypto algorithm
*/
#include <string.h>
#include <gpxe/crypto.h>
static void null_init ( void *ctx __unused ) {
/* Do nothing */
}
static int null_setkey ( void *ctx __unused, const void *key __unused,
size_t keylen __unused ) {
/* Do nothing */
return 0;
}
static void null_setiv ( void *ctx __unused, const void *iv __unused ) {
/* Do nothing */
}
static void null_encode ( void *ctx __unused, const void *src,
void *dst, size_t len ) {
if ( dst )
memcpy ( dst, src, len );
}
static void null_decode ( void *ctx __unused, const void *src,
void *dst, size_t len ) {
if ( dst )
memcpy ( dst, src, len );
}
static void null_final ( void *ctx __unused, void *out __unused ) {
/* Do nothing */
}
struct crypto_algorithm crypto_null = {
.name = "null",
.ctxsize = 0,
.blocksize = 1,
.digestsize = 0,
.init = null_init,
.setkey = null_setkey,
.setiv = null_setiv,
.encode = null_encode,
.decode = null_decode,
.final = null_final,
};
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