/*
* Copyright (c) 2007-2009 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
@internalComponent
@released
*/
#ifndef __RIJNDAELIMPL_H__
#define __RIJNDAELIMPL_H__
#include <e32base.h>
#include <e32cmn.h>
#include "keys.h"
#include "h4cipherimpl.h"
#include "cryptodriver.h"
/**
Plug-in class for AES (Rijndael) block cipher
*/
namespace HwCrypto
{
class __NOTSHARED CH4RijndaelImpl : public CH4CipherImpl
{
public:
/**
Creates an instance of an AES (Rijndael) symmetric cipher plug-in.
@param aKey The key
@param aCryptoMode Whether to encrypt or decrypt
@param aOperationMode The block cipher mode ECB, CBC, CTR etc
@param aPadding The padding scheme to use None, SSLv3, PKCS#7
@return A pointer to a CH4RijndaelImpl instance
*/
static CH4RijndaelImpl* NewL(const CryptoSpi::CKey& aKey,
TUid aCryptoMode, TUid aOperationMode, TUid aPadding);
/**
Creates an instance of an AES (Rijndael) symmetric cipher plug-in.
A pointer to the plug-in instance is placed on the cleanup stack.
@param aKey The key
@param aCryptoMode Whether to encrypt or decrypt
@param aOperationMode The block cipher mode ECB, CBC, CTR etc
@param aPadding The padding scheme to use None, SSLv3, PKCS#7
@return A pointer to a CH4RijndaelImpl instance
*/
static CH4RijndaelImpl* NewLC(const CryptoSpi::CKey& aKey,
TUid aCryptoMode, TUid aOperationMode, TUid aPadding);
// From CSymmetricCipherImpl
TBool IsValidKeyLength(TInt aKeyBytes) const;
TUid ImplementationUid() const;
const CExtendedCharacteristics* GetExtendedCharacteristicsL();
static CExtendedCharacteristics* StaticGetExtendedCharacteristicsL();
/// Destructor
~CH4RijndaelImpl();
private:
/**
Constructor
@param aOperationMode The mode of operation e.g. CBC
@param aCryptoMode Whether to encrypt or decrypt
@param aPaddingMode The padding mode to use. None, SSL, PKCS#7
*/
CH4RijndaelImpl(TUid aOperationMode, TUid aCryptoMode, TUid aPaddingMode);
/// second phase of construction
void ConstructL(const CryptoSpi::CKey& aKey);
// From CH4CipherImpl
virtual void DoSetupL();
virtual void DoWriteL(const TUint8* aBuffer, TUint aNumBytes);
virtual void DoReadL(TDes8 &aBuffer, TUint32 aLength);
private:
RCryptoDriver iDriver;
TBool iDriverOpen;
};
}
#endif //__RIJNDAELIMPL_H__