--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cryptoplugins/cryptospiplugins/source/softwarecrypto/rc2impl.h	Fri Nov 06 13:21:00 2009 +0200
@@ -0,0 +1,118 @@
+/*
+* 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: 
+*
+*/
+
+
+#ifndef	__RC2_H__
+#define	__RC2_H__
+
+/**
+@file 
+@internalComponent
+@released
+*/
+
+#include <e32base.h>
+#include <e32cmn.h>
+#include "keys.h"
+#include "symmetriccipherimpl.h"
+
+/**
+Plug-in class for RC2 block cipher
+*/
+namespace SoftwareCrypto
+	{
+	using namespace CryptoSpi;
+	
+	NONSHARABLE_CLASS(CRc2Impl) : public CSymmetricBlockCipherImpl
+		{
+	public:
+		/**
+		Creates an instance of an RC2 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
+		@param aEffectiveKeyLenBits The effective key length in bits
+		@return A pointer to a CRc2Impl instance
+		*/
+		static CRc2Impl* NewL(const CKey& aKey, 
+			TUid aCryptoMode, TUid aOperationMode, TUid aPadding, TInt aEffectiveKeyLenBits);
+
+		/**
+		Creates an instance of an RC2 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
+		@param aEffectiveKeyLenBits The effective key length in bits
+		@return A pointer to a CRc2Impl instance
+		*/
+		static CRc2Impl* NewLC(const CKey& aKey, 
+			TUid aCryptoMode, TUid aOperationMode, TUid aPadding, TInt aEffectiveKeyLenBits);
+		
+		// From CSymmetricCipherImpl
+		TBool IsValidKeyLength(TInt aKeyBytes) const;
+		TUid ImplementationUid() const;
+		TInt GetKeyStrength() const;
+		const CExtendedCharacteristics* GetExtendedCharacteristicsL();
+		
+		static CExtendedCharacteristics* CreateExtendedCharacteristicsL();
+				
+		/// Destructor
+		~CRc2Impl();
+		
+		/** SSL Effective Key Length Compatibility - for compatibility with SSL */
+		static const TUint KDefaultEffectiveKeyLenBits = 1024;
+
+	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
+		*/
+		CRc2Impl(TUid aOperationMode, TUid aCryptoMode, TUid aPaddingMode);
+			
+		///	second phase of construction	
+		void ConstructL(const CKey& aKey, TInt aEffectiveKeyLenBits);
+					
+		/**
+		Expands the key (iKey) to iEffectiveKeyLenBits and stores the result in iK
+		*/
+		void SetKeySchedule();
+		
+		// From CSymmetricBlockCipherImpl
+		void TransformEncrypt(TUint8* aBuffer, TUint aNumBlocks);
+		void TransformDecrypt(TUint8* aBuffer, TUint aNumBlocks);		
+
+	private:		
+		static const TUint8 KRc2BlockBytes = 8;
+		static const TInt KRc2MaxKeySizeBytes = 128;	
+		static const TInt KRc2ExpandedKeyLen = 64;
+		/**
+	 	 The expanded key buffer.
+		 Each iK[i] is a 16-bit word.
+	 	 */
+		TUint16 iK[KRc2ExpandedKeyLen];	//	128 bytes		
+		
+		/** The effective key length in bits */
+		TInt iEffectiveKeyLenBits;	
+		};
+	}
+
+#endif //__RC2_H__