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/*
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* Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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/**
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@file
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@internalComponent
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@released
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*/
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#ifndef __RIJNDAELIMPL_H__
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#define __RIJNDAELIMPL_H__
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#include <e32base.h>
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#include <e32cmn.h>
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#include "keys.h"
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#include "h4cipherimpl.h"
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#include "cryptodriver.h"
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/**
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Plug-in class for AES (Rijndael) block cipher
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*/
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namespace HwCrypto
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{
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class __NOTSHARED CH4RijndaelImpl : public CH4CipherImpl
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{
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public:
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/**
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Creates an instance of an AES (Rijndael) symmetric cipher plug-in.
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@param aKey The key
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@param aCryptoMode Whether to encrypt or decrypt
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@param aOperationMode The block cipher mode ECB, CBC, CTR etc
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@param aPadding The padding scheme to use None, SSLv3, PKCS#7
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@return A pointer to a CH4RijndaelImpl instance
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*/
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static CH4RijndaelImpl* NewL(const CryptoSpi::CKey& aKey,
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TUid aCryptoMode, TUid aOperationMode, TUid aPadding);
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/**
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Creates an instance of an AES (Rijndael) symmetric cipher plug-in.
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A pointer to the plug-in instance is placed on the cleanup stack.
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@param aKey The key
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@param aCryptoMode Whether to encrypt or decrypt
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@param aOperationMode The block cipher mode ECB, CBC, CTR etc
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@param aPadding The padding scheme to use None, SSLv3, PKCS#7
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@return A pointer to a CH4RijndaelImpl instance
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*/
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static CH4RijndaelImpl* NewLC(const CryptoSpi::CKey& aKey,
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TUid aCryptoMode, TUid aOperationMode, TUid aPadding);
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// From CSymmetricCipherImpl
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TBool IsValidKeyLength(TInt aKeyBytes) const;
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TUid ImplementationUid() const;
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const CExtendedCharacteristics* GetExtendedCharacteristicsL();
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static CExtendedCharacteristics* StaticGetExtendedCharacteristicsL();
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/// Destructor
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~CH4RijndaelImpl();
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private:
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/**
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Constructor
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@param aOperationMode The mode of operation e.g. CBC
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@param aCryptoMode Whether to encrypt or decrypt
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@param aPaddingMode The padding mode to use. None, SSL, PKCS#7
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*/
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CH4RijndaelImpl(TUid aOperationMode, TUid aCryptoMode, TUid aPaddingMode);
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/// second phase of construction
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void ConstructL(const CryptoSpi::CKey& aKey);
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// From CH4CipherImpl
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virtual void DoSetupL();
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virtual void DoWriteL(const TUint8* aBuffer, TUint aNumBytes);
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virtual void DoReadL(TDes8 &aBuffer, TUint32 aLength);
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private:
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RCryptoDriver iDriver;
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TBool iDriverOpen;
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};
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}
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#endif //__RIJNDAELIMPL_H__
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