/*
 *************************************************************************
 * Ralink Tech Inc.
 * 5F., No.36, Taiyuan St., Jhubei City,
 * Hsinchu County 302,
 * Taiwan, R.O.C.
 *
 * (c) Copyright 2002-2007, Ralink Technology, Inc.
 *
 * 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 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.,                                       * 
 * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             * 
 *                                                                       * 
 *************************************************************************/


/****************************************************************************
    Module Name:
    RC4

    Abstract:
    
    Revision History:
    Who         When            What
    --------    ----------      ------------------------------------------
    Eddy        2009/05/13      ARC4
***************************************************************************/

#ifndef __CRYPT_ARC4_H__
#define __CRYPT_ARC4_H__

#include "rt_config.h"

/* ARC4 definition & structure */
#define ARC4_KEY_BLOCK_SIZE 256

typedef struct {
	UINT BlockIndex1;
	UINT BlockIndex2;
	UINT8 KeyBlock[256];
} ARC4_CTX_STRUC, *PARC4_CTX_STRUC;

/* ARC4 operations */
VOID ARC4_INIT(
	IN ARC4_CTX_STRUC * pARC4_CTX,
	IN PUCHAR pKey,
	IN UINT KeyLength);

VOID ARC4_Compute(
	IN ARC4_CTX_STRUC * pARC4_CTX,
	IN UINT8 InputBlock[],
	IN UINT InputBlockSize,
	OUT UINT8 OutputBlock[]);

VOID ARC4_Discard_KeyLength(
	IN ARC4_CTX_STRUC * pARC4_CTX,
	IN UINT Length);

#endif /* __CRYPT_ARC4_H__ */
