/**

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL " http://www.eclipse.org/legal/epl-v10.html ".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

* kernel/eka/include

*

*/

/**

 @file

 @internalTechnology

 */

#ifndef __SHA256_H__

#define __SHA256_H__

#include <e32cmn.h>

#include <e32des8.h>

#include <e32def.h>

const TUint KSHA256BlockSize = 64;

const TInt KSHA256HashSize = 32;

class SHA256

	{	

public:

	SHA256(); // constructor

	void Reset();

	const TDesC8& Final(void);

	void Update(const TUint8* aData,TUint aLength);

private:

	inline void AddLength(const TUint aLength);

	inline void CopyWordToHash(TUint aVal, TInt aIndex);

	void Block();

	void PadMessage();

private:

	TBuf8<KSHA256HashSize> iHash;

	TUint iA;

	TUint iB;

	TUint iC;

	TUint iD;

	TUint iE;

	TUint iF;

	TUint iG;

	TUint iH;

	TUint iData[KSHA256BlockSize];

	TUint iNl;

	TUint64 iNh;

	};

#endif