sl@0: /*
sl@0: * Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of the License "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description: 
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: #ifndef __RSAIMPL_H__
sl@0: #define __RSAIMPL_H__
sl@0: 
sl@0: /**
sl@0: @file 
sl@0: @internalComponent
sl@0: @released
sl@0: */
sl@0: 
sl@0: #include <e32base.h>
sl@0: #include <e32cmn.h>
sl@0: #include "keys.h"
sl@0: #include "asymmetriccipherimpl.h"
sl@0: 
sl@0: /**
sl@0:  * Implementation of RSA encryption as described in PKCS#1 v1.5.
sl@0:  */
sl@0: namespace SoftwareCrypto
sl@0: 	{
sl@0: 	using namespace CryptoSpi;
sl@0: 	
sl@0: 	NONSHARABLE_CLASS(CRSAImpl) : public CAsymmetricCipherImpl
sl@0: 		{
sl@0: 	public:
sl@0: 		/**
sl@0: 		Creates an instance of an RSA asymmetric cipher plug-in.
sl@0: 		@param aKey The key
sl@0: 		@param aCryptoMode Whether to encrypt or decrypt
sl@0: 		@param aPadding The padding scheme to use None, SSLv3, PKCS#7
sl@0: 		@return A pointer to a CRSAImpl instance
sl@0: 		*/
sl@0: 		static CRSAImpl* NewL(const CKey& aKey,
sl@0: 			TUid aCryptoMode, TUid aPadding);
sl@0: 
sl@0: 		/**
sl@0: 		Creates an instance of an RSA asymmetric cipher plug-in.
sl@0: 		A pointer to the plug-in instance is placed on the cleanup stack.
sl@0: 		@param aKey The key
sl@0: 		@param aCryptoMode Whether to encrypt or decrypt
sl@0: 		@param aPadding The padding scheme to use None, SSLv3, PKCS#7
sl@0: 		@return A pointer to a CRSAImpl instance
sl@0: 		*/
sl@0: 		static CRSAImpl* NewLC(const CKey& aKey,
sl@0: 			TUid aCryptoMode, TUid aPadding);
sl@0: 
sl@0: 		// Override CAsymmetricCipherImpl virtual functions
sl@0: 		TUid ImplementationUid() const;
sl@0: 		TBool IsValidKeyLengthL(TInt aKeyBytes) const;
sl@0: 		TInt GetMaximumInputLengthL() const;
sl@0: 		TInt GetMaximumOutputLengthL() const;
sl@0: 		void ProcessL(const TDesC8& aInput, TDes8& aOutput);
sl@0: 		// End of CAsymmetricCipherImpl
sl@0: 		
sl@0: 		const CExtendedCharacteristics* GetExtendedCharacteristicsL();
sl@0: 		static CExtendedCharacteristics* CreateExtendedCharacteristicsL();
sl@0: 			
sl@0: 		// Destructor
sl@0: 		~CRSAImpl();
sl@0: 
sl@0: 	private:
sl@0: 		/**
sl@0: 		Constructor
sl@0: 		@param aCryptoMode Whether to encrypt or decrypt
sl@0: 		@param aPaddingMode The padding mode to use. None, SSL, PKCS#7
sl@0: 		*/
sl@0: 		CRSAImpl(TUid aCryptoMode, TUid aPaddingMode);
sl@0: 			
sl@0: 		/// second phase of construction
sl@0: 		void ConstructL(const CKey& aKey);
sl@0: 		
sl@0: 		/// for internal usage, called from ProcessL
sl@0: 		void EncryptL(const TDesC8& aInput, TDes8& aOutput) const;
sl@0: 		void DecryptL(const TDesC8& aInput, TDes8& aOutput) const;
sl@0: 
sl@0: 		};
sl@0: 	}
sl@0: 
sl@0: #endif // __RSAIMPL_H__