diff -r 000000000000 -r bde4ae8d615e os/security/crypto/weakcryptospi/source/symmetric/rc2shim.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/os/security/crypto/weakcryptospi/source/symmetric/rc2shim.h Fri Jun 15 03:10:57 2012 +0200 @@ -0,0 +1,154 @@ +/* +* Copyright (c) 2006-2009 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: +* RC2 shim classes definition +* +*/ + + +/** + @file + @internalComponent + @released +*/ + +#ifndef __RC2SHIM_H__ +#define __RC2SHIM_H__ + +#include + +namespace CryptoSpi + { + class CCryptoParams; + class CSymmetricCipher; + class CKey; + } + +NONSHARABLE_CLASS(CRC2EncryptorShim) : public CRC2Encryptor +{ +public: + /** + Creates an CRC2EncryptorShim object which has the same interface + as RC2 Encryptor but delegates all work to a Crypto SPI plug-in. + + @param aKey The encryption key + @return A pointer to a CRC2EncryptorShim instance + */ + static CRC2EncryptorShim* NewL(const TDesC8& aKey, TInt aEffectiveKeyLenBits); + + /** + Creates an CRC2EncryptorShim object which has the same interface + as RC2 Encryptor but delegates all work to a Crypto SPI plug-in. + + A pointer to the new object is placed on the cleanup stack + + @param aKey The encryption key + @return A pointer to a CRC2EncryptorShim instance + */ + static CRC2EncryptorShim* NewLC(const TDesC8& aKey, TInt aEffectiveKeyLenBits); + + // From CBlockTransform + TInt BlockSize() const; + void Transform(TDes8& aBlock); + void Reset(void); + TInt KeySize(void) const; + + /// Destructor + ~CRC2EncryptorShim(); + +private: + /// Constructor + CRC2EncryptorShim(); + void ConstructL(const TDesC8& aKey, TInt aEffectiveKeyLenBits); + + // From CBase + TInt Extension_(TUint aExtensionId, TAny*& a0, TAny* a1); + +private: + /// SPI delegate + CryptoSpi::CSymmetricCipher* iSymmetricCipherImpl; + + /// SPI requires all key to passed as key-objects + CryptoSpi::CKey* iKey; + + /// Temporary output block, SPI does not overwrite input + /// RC2 uses 64bit blocks + TBuf8<16> iOutputBlock; + + /// The effective key length is passed as an algorithm + /// parameter. This allows it to be externalised. + CryptoSpi::CCryptoParams* iAlgorithmParams; +}; + +NONSHARABLE_CLASS(CRC2DecryptorShim) : public CRC2Decryptor +{ +public: + /** + Creates an CRC2DecryptorShim object which has the same interface + as RC2 Decryptor but delegates all work to a Crypto SPI plug-in. + + @param aKey The decryption key + @return A pointer to a CRC2DecryptorShim instance + */ + static CRC2DecryptorShim* NewL(const TDesC8& aKey, TInt aEffectiveKeyLenBits); + + /** + Creates an CRC2DecryptorShim object which has the same interface + as RC2 Decryptor but delegates all work to a Crypto SPI plug-in. + + A pointer to the new object is placed on the cleanup stack + + @param aKey The decryption key + @return A pointer to a CRC2DecryptorShim instance + */ + static CRC2DecryptorShim* NewLC(const TDesC8& aKey, TInt aEffectiveKeyLenBits); + + // From CBlockTransform + TInt BlockSize() const; + void Transform(TDes8& aBlock); + void Reset(void); + TInt KeySize(void) const; + + /// Destructor + ~CRC2DecryptorShim(); + +private: + /// Constructor + CRC2DecryptorShim(); + void ConstructL(const TDesC8& aKey, TInt aEffectiveKeyLenBits); + + /** + From CBase, to allow CBufferedTransform & CBlockChainingMode + to determine whether the functionality may be delegated to + the SPI object. + */ + TInt Extension_(TUint aExtensionId, TAny*& a0, TAny* a1); + +private: + /// SPI delegate + CryptoSpi::CSymmetricCipher* iSymmetricCipherImpl; + + /// SPI requires all key to passed as key-objects + CryptoSpi::CKey* iKey; + + /// Temporary output block, SPI does not overwrite input + /// RC2 uses 64bit blocks + TBuf8<16> iOutputBlock; + + /// The effective key length is passed as an algorithm + /// parameter. This allows it to be externalised. + CryptoSpi::CCryptoParams* iAlgorithmParams; +}; + +#endif // __RC2SHIM_H__