sl@0: /*
sl@0: * Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of the License "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description: 
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: #ifndef __DES_INL__
sl@0: #define __DES_INL__
sl@0: 
sl@0: inline void IPerm(TUint32& left, TUint32& right)
sl@0: 	{
sl@0: 	TUint32 work;
sl@0: 
sl@0: 	right = rotlFixed(right, 4U);
sl@0: 	work = (left ^ right) & 0xf0f0f0f0;
sl@0: 	left ^= work;
sl@0: 	right = rotrFixed(right^work, 20U);
sl@0: 	work = (left ^ right) & 0xffff0000;
sl@0: 	left ^= work;
sl@0: 	right = rotrFixed(right^work, 18U);
sl@0: 	work = (left ^ right) & 0x33333333;
sl@0: 	left ^= work;
sl@0: 	right = rotrFixed(right^work, 6U);
sl@0: 	work = (left ^ right) & 0x00ff00ff;
sl@0: 	left ^= work;
sl@0: 	right = rotlFixed(right^work, 9U);
sl@0: 	work = (left ^ right) & 0xaaaaaaaa;
sl@0: 	left = rotlFixed(left^work, 1U);
sl@0: 	right ^= work;
sl@0: 	}
sl@0: 
sl@0: inline void FPerm(TUint32& left, TUint32& right)
sl@0: 	{
sl@0: 	TUint32 work;
sl@0: 
sl@0: 	right = rotrFixed(right, 1U);
sl@0: 	work = (left ^ right) & 0xaaaaaaaa;
sl@0: 	right ^= work;
sl@0: 	left = rotrFixed(left^work, 9U);
sl@0: 	work = (left ^ right) & 0x00ff00ff;
sl@0: 	right ^= work;
sl@0: 	left = rotlFixed(left^work, 6U);
sl@0: 	work = (left ^ right) & 0x33333333;
sl@0: 	right ^= work;
sl@0: 	left = rotlFixed(left^work, 18U);
sl@0: 	work = (left ^ right) & 0xffff0000;
sl@0: 	right ^= work;
sl@0: 	left = rotlFixed(left^work, 20U);
sl@0: 	work = (left ^ right) & 0xf0f0f0f0;
sl@0: 	right ^= work;
sl@0: 	left = rotrFixed(left^work, 4U);
sl@0: 	}
sl@0: 
sl@0: inline void ReverseKeySchedule(TUint32* aKey)
sl@0: 	{
sl@0: 	TInt i = 0;
sl@0: 	for (; i<16; i+=2)
sl@0: 		{
sl@0: 		TClassSwap((*(aKey+i)), (*(aKey+(32-2-i))));
sl@0: 		TClassSwap((*(aKey+i+1)), (*(aKey+(32-1-i))));
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: #endif //__DES_INL__