--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cryptoplugins/cryptospiplugins/test/h4drv/crypto_h4_plugin/h4cipherimpl.h	Thu Sep 10 14:01:51 2009 +0300
@@ -0,0 +1,219 @@
+/*
+* Copyright (c) 2007-2009 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: 
+*
+*/
+
+
+/**
+ @file
+ @internalComponent
+ @released
+*/
+#ifndef	__SYMMETRICCIPHERIMPL_H__
+#define	__SYMMETRICCIPHERIMPL_H__
+
+#include <e32base.h>
+#include <e32cmn.h>
+#include <cryptospi/cryptospidef.h>
+#include <padding.h>
+#include "symmetriccipherplugin.h"
+
+
+#ifdef __MARM__
+#define __NOTSHARED __declspec(notshared)
+#else
+#define __NOTSHARED
+#endif
+
+/** The maximum block size supported (in bytes) */
+const TUint KMaxBlockSizeSupported = 32;
+
+/**
+Abstract base class for symmetric cipher plug-ins.
+*/
+namespace HwCrypto
+	{
+	using namespace CryptoSpi;
+		
+	class __NOTSHARED CH4CipherImpl : public CBase, public MSymmetricCipher
+		{
+	public:
+		/**
+		Implemented by each cipher subclass to determine whether the
+		specified key length is valid for that cipher.
+		This is called by ConstructL and SetKeyL
+		@param aKeyLength The key length in bytes to verify.
+		*/
+		virtual TBool IsValidKeyLength(TInt aKeyBytes) const = 0;
+		
+		/**
+		Helper function implemented by concrete cipher sub-class that 
+		allows GetCharacteristicsL to return the correct characteristics object.
+		@return The implemention uid
+		*/
+		virtual TUid ImplementationUid() const = 0;
+		
+		/**
+		Gets the strength of the current key, needed to check whether the cipher
+		may operate if strong cryptography is not enabled.
+		@return The strength of the current key
+		*/
+		virtual TInt GetKeyStrength() const;
+		
+				
+		// Override MPlugin virtual functions
+		void Close();
+		TAny* GetExtension(TUid aExtensionId);
+
+		void GetCharacteristicsL(const TCharacteristics*& aPluginCharacteristics);	
+
+
+		void Reset(); // Always call reset in super-class if you override this
+		// End of MPlugin virtual functions
+		
+		// Override MSymmetricCipherBase virtual functions 
+		TInt KeySize() const;
+		virtual void SetKeyL(const CKey& aKey);
+
+		TInt BlockSize() const;
+		void SetCryptoModeL(TUid aCryptoMode);
+		void SetOperationModeL(TUid aOperationMode);
+		void SetPaddingModeL(TUid aPaddingMode);
+		void SetIvL(const TDesC8& aIv);
+		
+		TInt MaxOutputLength(TInt aInputLength) const;
+		TInt MaxFinalOutputLength(TInt aInputLength) const;
+
+		void ProcessL(const TDesC8& aInput, TDes8& aOutput);
+		void ProcessFinalL(const TDesC8& aInput, TDes8& aOutput);						
+		// End of MSymmetricCipherBase
+						
+		/// Destructor
+		~CH4CipherImpl();
+
+	protected:
+		
+		/**
+		Constructor
+		@param aBlockBytes The block size in bytes
+		@param aOperationMode The mode of operation e.g. CBC
+		@param aCryptoMode Whether to encrypt or decrypt
+		*/
+		CH4CipherImpl(TUint8 aBlockBytes,
+					  TUid aCryptoMode,
+					  TUid aOperationMode,
+					  TUid aPaddingMode);
+		
+		/**
+		Second phase of construction. Always call ConstructL in the super-class
+		if your override this method.
+		
+		@param aKey The key to initialise the cipher with.
+		*/
+		virtual void ConstructL(const CKey& aKey);		
+		
+		/**
+		Creates the extended characteristics object. Concrete plug-in classes
+		may override this to customise the object returned by GetCharacteristics();
+		
+		The default configuration is that  plug-ins have unlimited concurrency, 
+		cannot be reserved for exclusive use and are not CERTIFIED to be standards compliant.		
+		@return The extended characteristics object
+		*/
+		virtual CExtendedCharacteristics* CreateExtendedCharacteristicsL();		
+		
+		/**
+		Extracts the raw symmetric key from a generic key object. The buffer
+		is placed on the cleanup stack.
+		
+		@param aKey The key object
+		@return A buffer containing the raw key value
+		*/
+		HBufC8* ExtractKeyDataLC(const CKey& aKey) const;	
+	
+
+		/**
+		   DoSetDetails
+
+		   Reconfigure h/w based on iCryptoMode/iOperationMode/iKey/iIv
+
+		   Implemented by each cipher subclass.
+		*/
+		virtual void DoSetupL() = 0;
+
+		/**
+		   DoWrite
+
+		   Blocking write of data to be transformed. Need not be a
+		   multiple of the block size.
+
+		   Implemented by each cipher subclass.
+		*/
+		virtual void DoWriteL(const TUint8* aBuffer, TUint aNumBytes) = 0;
+		
+		/**
+		   DoRead		   
+
+		   Blocking read of transformed data.
+
+		   Need not be a multiple of the block size, but caller should
+		   ensure enough blocks of data have been written to satisfy
+		   the request.
+
+		   The data is appended to the supplied descriptor.
+
+		   Implemented by each cipher subclass.
+		*/
+		virtual void DoReadL(TDes8 &aBuffer, TUint32 aLength) = 0;
+			
+			
+	protected:
+
+		/// the key, extracted from a CKey object
+		HBufC8* iKey;
+		
+		/// key size in bytes
+		TUint iKeyBytes;
+		
+		/// Standards conformance information.
+		RArray<TUid> iStandardsConformance;
+
+		/// block size in bytes, current largest block size is 16 bytes (AES)
+		TUint8 iBlockBytes;	
+		/// encryption or decryption
+		TUid iCryptoMode;		
+		/// The block cipher mode e.g. ECB, CBC
+		TUid iOperationMode;
+		/// the current padding scheme
+		TUid iPaddingMode;
+		
+		/// the initialisation vector
+		RBuf8 iIv;
+		
+		/// current padding scheme implementation
+		CPadding* iPadding;
+		/// buffer to store blocks
+		RBuf8 iPartialBlock;
+		/// buffer to store input / output of padding
+		RBuf8 iPaddingBlock;
+		
+	private:
+		TBool iNeedToSetupHw;
+		};
+
+			
+	}
+
+#endif	//	__SYMMETRICCIPHERIMPL_H__