/*
 * RC4 stream cipher
 * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Alternatively, this software may be distributed under the terms of BSD
 * license.
 *
 * License
 * -------
 * 
 * GPL v2:
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 * 
 * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * (this copy of the license is in COPYING file)
 * 
 * 
 * Alternatively, this software may be distributed, used, and modified
 * under the terms of BSD license:
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 
 * 3. Neither the name(s) of the above-listed copyright holder(s) nor the
 *    names of its contributors may be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*****************************************************************************
 *
 * Filename:
 * ---------
 *    rc4.h
 *
 * Project:
 * --------
 *   Maui_Software
 *
 * Description:
 * ------------
 *   RC4 Engine
 *
 * Author:
 * -------
 * -------
 *============================================================================
 *             HISTORY
 * Below this line, this part is controlled by ClearCase. DO NOT MODIFY!!
 *------------------------------------------------------------------------------
 * $Log$
 *
 * 12 14 2010 leona.chou
 * removed!
 * .
 *
 * removed!
 * removed!
 * 
 *
 * removed!
 * removed!
 * add the speical case of RC4_SKIP to satisfy the WIFI 802.11i spec by skip the first 256 iteration of RC4.
 *
 * removed!
 * removed!
 * use a variable to record key schedule
 *
 * removed!
 * removed!
 * 
 *
 * removed!
 * removed!
 * 
 *
 * removed!
 * removed!
 * 
 *
 * removed!
 * removed!
 * Code revise.
 *
 * removed!
 * removed!
 * code review. add log placeholder.
 *------------------------------------------------------------------------------
 * Upper this line, this part is controlled by ClearCase. DO NOT MODIFY!!
 *============================================================================
 ****************************************************************************/

#ifndef __RC4_H__
#define __RC4_H__

#include "che_api.h"

#include "kal_general_types.h"

#define S_SWAP(sa,sb) do { kal_uint8 t = sa; sa = sb; sb = t; } while(0)

void che_rc4(RC4_CNXT *keySet,kal_uint8 *input, kal_uint32 len, kal_uint8 *key, kal_uint32 key_len, CHE_OPERATION_MODE mode, kal_uint8 *output);

void che_rc4_set_key(RC4_CNXT *keySet, kal_uint32 len, kal_uint8 *data);

#endif