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/*
* Copyright � 2006-2016 SplinterGU (Fenix/Bennugd)
* Copyright � 2002-2006 Fenix Team (Fenix)
* Copyright � 1999-2002 Jos� Luis Cebri�n Pag�e (Fenix)
*
* This file is part of Bennu - Game Development
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*
*/
#include "b_crypt.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "bgddl.h"
/* --------------------------------------------------------------------------- */
static int modcrypt_new( INSTANCE * my, int * params )
{
return ( ( int ) crypt_create( params[0], ( char * ) params[1] ) );
}
/* --------------------------------------------------------------------------- */
static int modcrypt_del( INSTANCE * my, int * params )
{
crypt_destroy( ( crypt_handle * ) params[0] );
return 1;
}
/* --------------------------------------------------------------------------- */
static int __crypt( crypt_handle * ch, char * in, char * out, int blocks, int enc )
{
if ( !ch || !in || !out || blocks <= 0 ) return -1;
while ( blocks-- )
{
if ( crypt_data( ch, in, out, 8, enc ) <= 0 ) return -1;
in += 8;
out += 8;
}
return 0;
}
/* --------------------------------------------------------------------------- */
static int modcrypt_encrypt( INSTANCE * my, int * params )
{
return ( __crypt( ( crypt_handle * ) params[0], ( char * ) params[1], ( char * ) params[2], params[3], 1 ) );
}
/* --------------------------------------------------------------------------- */
static int modcrypt_decrypt( INSTANCE * my, int * params )
{
return ( __crypt( ( crypt_handle * ) params[0], ( char * ) params[1], ( char * ) params[2], params[3], 0 ) );
}
/* --------------------------------------------------------------------------- */
static int modcrypt_encrypt2( INSTANCE * my, int * params )
{
int r;
crypt_handle * ch = crypt_create( params[0], ( char * ) params[1] );
r = __crypt( ch, ( char * ) params[2], ( char * ) params[3], params[4], 1 );
crypt_destroy( ch );
return r;
}
/* --------------------------------------------------------------------------- */
static int modcrypt_decrypt2( INSTANCE * my, int * params )
{
int r;
crypt_handle * ch = crypt_create( params[0], ( char * ) params[1] );
r = __crypt( ch, ( char * ) params[2], ( char * ) params[3], params[4], 0 );
crypt_destroy( ch );
return r;
}
/* --------------------------------------------------------------------------- */
/* exports */
/* --------------------------------------------------------------------------- */
#include "mod_crypt_exports.h"
/* --------------------------------------------------------------------------- */
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