/*
 * This file is a part of Pcompress, a chunked parallel multi-
 * algorithm lossless compression and decompression program.
 *
 * Copyright (C) 2012-2013 Moinak Ghosh. All rights reserved.
 * Use is subject to license terms.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program.
 * If not, see <http://www.gnu.org/licenses/>.
 *
 * moinakg@belenix.org, http://moinakg.wordpress.com/
 *      
 */

/*
The Keccak sponge function, designed by Guido Bertoni, Joan Daemen,
Michaël Peeters and Gilles Van Assche. For more information, feedback or
questions, please refer to our website: http://keccak.noekeon.org/

Implementation by Ronny Van Keer,
hereby denoted as "the implementer".

To the extent possible under law, the implementer has waived all copyright
and related or neighboring rights to the source code in this file.
http://creativecommons.org/publicdomain/zero/1.0/
*/

#include <string.h>
#include "KeccakF-1600-interface.h"

#define	UseBebigokimisa

typedef unsigned char UINT8;
typedef unsigned long long int UINT64;

void KeccakInitialize()
{
}

void KeccakExtract(const unsigned char *state, unsigned char *data, unsigned int laneCount)
{
    memcpy(data, state, laneCount*8);
#ifdef UseBebigokimisa
    if (laneCount > 8) 
    {
        ((UINT64*)data)[ 1] = ~((UINT64*)data)[ 1];
        ((UINT64*)data)[ 2] = ~((UINT64*)data)[ 2];
        ((UINT64*)data)[ 8] = ~((UINT64*)data)[ 8];

        if (laneCount > 12) 
        {
            ((UINT64*)data)[12] = ~((UINT64*)data)[12];
            if (laneCount > 17) 
            {
                ((UINT64*)data)[17] = ~((UINT64*)data)[17];
                if (laneCount > 20) 
                {
                    ((UINT64*)data)[20] = ~((UINT64*)data)[20];
                }
            }
        }
    }
    else
    {
		if (laneCount > 1) 
		{
			((UINT64*)data)[ 1] = ~((UINT64*)data)[ 1];
			if (laneCount > 2) 
			{
				((UINT64*)data)[ 2] = ~((UINT64*)data)[ 2];
            }
        }
    }

#endif
}