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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2012 Amaury Pouly
*
* 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 (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <string.h>
#include <stdlib.h>
#include "fwp.h"
#include "misc.h"
#include "mg.h"
void fwp_read(void *in, int size, void *out, uint8_t *key)
{
mg_decrypt_fw(in, size, out, key);
}
void fwp_write(void *in, int size, void *out, uint8_t *key)
{
mg_encrypt_fw(in, size, out, key);
}
static uint8_t g_key[NWZ_KEY_SIZE];
void fwp_setkey(char key[NWZ_KEY_SIZE])
{
memcpy(g_key, key, NWZ_KEY_SIZE);
}
void fwp_crypt(void *buf, int size, int mode)
{
while(size >= NWZ_KEY_SIZE)
{
if(mode)
mg_decrypt_pass(buf, NWZ_KEY_SIZE, buf, g_key);
else
mg_encrypt_pass(buf, NWZ_KEY_SIZE, buf, g_key);
buf += NWZ_KEY_SIZE;
size -= NWZ_KEY_SIZE;
}
if(size != 0)
abort(); /* size is not a multiple of 8 */
}
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