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/*
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* Copyright (c) 2006-2009 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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* RC2 shim classes definition
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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 __RC2SHIM_H__
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#define __RC2SHIM_H__
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#include <rc2.h>
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namespace CryptoSpi
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{
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class CCryptoParams;
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class CSymmetricCipher;
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class CKey;
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}
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NONSHARABLE_CLASS(CRC2EncryptorShim) : public CRC2Encryptor
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{
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public:
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/**
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Creates an CRC2EncryptorShim object which has the same interface
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as RC2 Encryptor but delegates all work to a Crypto SPI plug-in.
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@param aKey The encryption key
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@return A pointer to a CRC2EncryptorShim instance
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*/
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static CRC2EncryptorShim* NewL(const TDesC8& aKey, TInt aEffectiveKeyLenBits);
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/**
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Creates an CRC2EncryptorShim object which has the same interface
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as RC2 Encryptor but delegates all work to a Crypto SPI plug-in.
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A pointer to the new object is placed on the cleanup stack
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@param aKey The encryption key
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@return A pointer to a CRC2EncryptorShim instance
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*/
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static CRC2EncryptorShim* NewLC(const TDesC8& aKey, TInt aEffectiveKeyLenBits);
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// From CBlockTransform
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TInt BlockSize() const;
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void Transform(TDes8& aBlock);
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void Reset(void);
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TInt KeySize(void) const;
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/// Destructor
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~CRC2EncryptorShim();
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private:
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/// Constructor
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CRC2EncryptorShim();
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void ConstructL(const TDesC8& aKey, TInt aEffectiveKeyLenBits);
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// From CBase
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TInt Extension_(TUint aExtensionId, TAny*& a0, TAny* a1);
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private:
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/// SPI delegate
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CryptoSpi::CSymmetricCipher* iSymmetricCipherImpl;
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/// SPI requires all key to passed as key-objects
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CryptoSpi::CKey* iKey;
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/// Temporary output block, SPI does not overwrite input
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/// RC2 uses 64bit blocks
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TBuf8<16> iOutputBlock;
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/// The effective key length is passed as an algorithm
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/// parameter. This allows it to be externalised.
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CryptoSpi::CCryptoParams* iAlgorithmParams;
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};
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NONSHARABLE_CLASS(CRC2DecryptorShim) : public CRC2Decryptor
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{
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public:
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/**
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Creates an CRC2DecryptorShim object which has the same interface
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as RC2 Decryptor but delegates all work to a Crypto SPI plug-in.
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@param aKey The decryption key
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@return A pointer to a CRC2DecryptorShim instance
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*/
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static CRC2DecryptorShim* NewL(const TDesC8& aKey, TInt aEffectiveKeyLenBits);
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/**
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Creates an CRC2DecryptorShim object which has the same interface
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as RC2 Decryptor but delegates all work to a Crypto SPI plug-in.
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A pointer to the new object is placed on the cleanup stack
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@param aKey The decryption key
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@return A pointer to a CRC2DecryptorShim instance
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*/
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static CRC2DecryptorShim* NewLC(const TDesC8& aKey, TInt aEffectiveKeyLenBits);
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// From CBlockTransform
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TInt BlockSize() const;
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void Transform(TDes8& aBlock);
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void Reset(void);
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TInt KeySize(void) const;
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/// Destructor
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~CRC2DecryptorShim();
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private:
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/// Constructor
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CRC2DecryptorShim();
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void ConstructL(const TDesC8& aKey, TInt aEffectiveKeyLenBits);
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/**
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From CBase, to allow CBufferedTransform & CBlockChainingMode
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to determine whether the functionality may be delegated to
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the SPI object.
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*/
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TInt Extension_(TUint aExtensionId, TAny*& a0, TAny* a1);
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private:
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/// SPI delegate
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CryptoSpi::CSymmetricCipher* iSymmetricCipherImpl;
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/// SPI requires all key to passed as key-objects
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CryptoSpi::CKey* iKey;
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/// Temporary output block, SPI does not overwrite input
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/// RC2 uses 64bit blocks
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TBuf8<16> iOutputBlock;
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/// The effective key length is passed as an algorithm
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/// parameter. This allows it to be externalised.
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CryptoSpi::CCryptoParams* iAlgorithmParams;
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};
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#endif // __RC2SHIM_H__
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