// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "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:

//

/**

 @file

 @brief Header file for the implementation of the MD4 Message-Digest Algorithm - RFC 1320.

 @internalComponent 

*/

#ifndef __MD4_H__

#define __MD4_H__

#include <e32base.h>

// This implementation is fully derived (copied) from the former MD4

// implementation provided by Symbian PPP in the release 7.0s of

// Symbian OS.  This is a provisional solution until the Symbian

// Security subsystem components will provide a MD4 implementation.

/*final*/ class CMd4 : public CBase

/**

   Class that implements the MD4 Message-Digest Algorithm - RFC 1320.

   @internalComponent

   @note This implementation is fully derived from the former MD4 implementation provided by Symbian PPP in the release 7.0s of Symbian OS.  This is a provisional solution until the Symbian Security components will provide a MD4 implementation.

*/

	{

public:

	static CMd4* NewL();

//functions moved from the former CDigestBase

	TInt Input(const TDesC8& aInput);

	TInt Output(TDes8& aOutput);

	TInt OutputSize() const;

private:

	CMd4();

	void Transform(const TUint8*);

	void Update(const TUint8*, TInt);

	void Final(TUint8*);

	void Encode(TUint8*, const TUint32*, TInt);

	void Decode(TUint32*, const TUint8*, TInt);

private:

	TUint32 iState[4];

	TUint iCount[2];

	TUint8 iBuffer[64];

	};

#endif