/*

 * Copyright (c) 2005-2009 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: 

 *

 */

 /**

  @file

 */

 #ifndef __TSIGNATUREINPUT_H__

 #define __TSIGNATUREINPUT_H__

 #include <e32base.h>

 #include <hash.h>

 /** An abstract class capable of representing a message to be signed or verified. */

 class CSignatureInput : public CBase

     {

 public:

     virtual void Update(const TDesC8& aInput) = 0;

     virtual TPtrC8 Final(void) = 0;

 protected:

 	CSignatureInput(void) {}

 private:

     CSignatureInput(const CSignatureInput&);

     CSignatureInput& operator=(const CSignatureInput&);

     };

 class CHashingSignatureInput : public CSignatureInput

     {

 public:

     static CHashingSignatureInput* NewL(CMessageDigest::THashId aHashId);

     static CHashingSignatureInput* NewLC(CMessageDigest::THashId aHashId);

     virtual void Update(const TDesC8& aInput);

     virtual TPtrC8 Final(void);

     ~CHashingSignatureInput(void);

 protected:

     CHashingSignatureInput(void);

     void ConstructL(CMessageDigest::THashId aHashId);

 private:

     CMessageDigest* iHash;

 private:

     CHashingSignatureInput(const CHashingSignatureInput&);

     CHashingSignatureInput& operator=(const CHashingSignatureInput&);

     };

 #endif