sl@0: /*
sl@0: * Copyright (c) 2006-2010 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: * Software hash base definition
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: /**
sl@0:  @file
sl@0:  @internalComponent
sl@0:  @released
sl@0: */
sl@0: 
sl@0: #ifndef __CRYPTOAPI_SOFTWAREHASHBASE_H__
sl@0: #define __CRYPTOAPI_SOFTWAREHASHBASE_H__
sl@0: 
sl@0: #include <cryptospi/hashplugin.h>
sl@0: #include <cryptospi/keys.h>
sl@0: 
sl@0: namespace SoftwareCrypto
sl@0: 	{
sl@0: 	using namespace CryptoSpi;
sl@0: 	/**
sl@0: 	Interfaces for Software Hash
sl@0: 	*/
sl@0: 	class MSoftwareHash : public MHash
sl@0: 		{
sl@0: 	public:
sl@0: 		/**
sl@0: 		Restores the internal state of the message digest
sl@0: 		to a previously stored state.
sl@0: 		*/
sl@0: 		virtual void RestoreState() = 0;
sl@0: 
sl@0: 		/**
sl@0: 		Stores the internal state of the message digest.
sl@0: 		*/
sl@0: 		virtual void StoreState() = 0;
sl@0: 		};
sl@0: 			
sl@0: 	/**
sl@0: 	Proxy class Software Hash and Hmac implementation
sl@0: 	*/
sl@0: 	class CSoftwareHash : public MHash, public CBase
sl@0: 		{
sl@0: 	public:
sl@0: 		//
sl@0: 		//NewL & NewLC
sl@0: 		//
sl@0: 		static CSoftwareHash* NewL(TUid aAlgorithm, TUid aOperationMode, const CKey* aKey);
sl@0: 		static CSoftwareHash* NewLC(TUid aAlgorithm, TUid aOperationMode, const CKey* aKey);
sl@0: 
sl@0: #ifdef SYMBIAN_SDP_IPSEC_VOIP_SUPPORT
sl@0: 		static CSoftwareHash* NewL(TUid aAlgorithm);
sl@0: #endif
sl@0: 
sl@0: 		//
sl@0: 		// Destructor
sl@0: 		//
sl@0: 		~CSoftwareHash();
sl@0: 		//
sl@0: 		//From MPlugin
sl@0: 		//
sl@0: 		void Reset();
sl@0: 		void Close();		
sl@0: 		void GetCharacteristicsL(const TCharacteristics*& aPluginCharacteristics);		
sl@0: 		const CExtendedCharacteristics* GetExtendedCharacteristicsL();
sl@0: 		TAny* GetExtension(TUid aExtensionId);
sl@0: 		//
sl@0: 		//From MHash
sl@0: 		//
sl@0: 	    TPtrC8 Hash(const TDesC8& aMessage);
sl@0: 	    void Update(const TDesC8& aMessage);
sl@0: 		TPtrC8 Final(const TDesC8& aMessage);
sl@0: 		MHash* ReplicateL();		
sl@0: 		MHash* CopyL();
sl@0: 		void SetKeyL(const CKey& aKey);			
sl@0: 		void SetOperationModeL(TUid aOperationMode);
sl@0: 	
sl@0: 	private:
sl@0: 		//
sl@0: 		//Constructor
sl@0: 		// 
sl@0: 		CSoftwareHash();
sl@0: 		void ConstructL(TUid aAlgorithm, TUid aOperationMode, const CKey* aKey);
sl@0: 		
sl@0: 		//
sl@0: 		//get the active implementation
sl@0: 		//
sl@0: 		MSoftwareHash* Impl();
sl@0: 		
sl@0: 	private:
sl@0: 		/**
sl@0: 		The Key for HMAC mode operation
sl@0: 		*/
sl@0: 		CKey* iKey;
sl@0: 		
sl@0: 		/**
sl@0: 		The Uid for the operation mode
sl@0: 		*/
sl@0: 		TUid iOperationMode;
sl@0: 		
sl@0: 		/**
sl@0: 		The hash implementation
sl@0: 		*/
sl@0: 		MSoftwareHash* iHashImpl;
sl@0: 		
sl@0: 		/**
sl@0: 		The Hmac implementation
sl@0: 		*/
sl@0: 		MSoftwareHash* iHmacImpl;
sl@0: 		};
sl@0: 		
sl@0: 	GLDEF_C inline TUint CMD_R(TUint a,TUint s)
sl@0: 		{
sl@0: 		return (a<<s) | (a>>(32-s));
sl@0: 		}
sl@0: 	}
sl@0: 	
sl@0: 
sl@0: #endif // __CRYPTOAPI_SOFTWAREHASHBASE_H__