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/*
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* Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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* Software hash base definition
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*
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*/
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/**
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@file
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@internalComponent
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@released
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*/
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#ifndef __CRYPTOAPI_SOFTWAREHASHBASE_H__
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#define __CRYPTOAPI_SOFTWAREHASHBASE_H__
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#include <cryptospi/hashplugin.h>
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#include "keys.h"
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namespace SoftwareCrypto
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{
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using namespace CryptoSpi;
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/**
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Interfaces for Software Hash
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*/
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class MSoftwareHash : public MHash
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{
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public:
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/**
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Restores the internal state of the message digest
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to a previously stored state.
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*/
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virtual void RestoreState() = 0;
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/**
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Stores the internal state of the message digest.
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*/
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virtual void StoreState() = 0;
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};
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/**
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Proxy class Software Hash and Hmac implementation
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*/
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NONSHARABLE_CLASS(CSoftwareHash) : public MHash, public CBase
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{
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public:
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//
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//NewL & NewLC
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//
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static CSoftwareHash* NewL(TUid aAlgorithm, TUid aOperationMode, const CKey* aKey);
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static CSoftwareHash* NewLC(TUid aAlgorithm, TUid aOperationMode, const CKey* aKey);
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static CSoftwareHash* NewL(TUid aAlgorithm);
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//
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// Destructor
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//
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~CSoftwareHash();
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//
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//From MPlugin
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//
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void Reset();
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void Close();
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void GetCharacteristicsL(const TCharacteristics*& aPluginCharacteristics);
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const CExtendedCharacteristics* GetExtendedCharacteristicsL();
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TAny* GetExtension(TUid aExtensionId);
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//
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//From MHash
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//
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TPtrC8 Hash(const TDesC8& aMessage);
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void Update(const TDesC8& aMessage);
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TPtrC8 Final(const TDesC8& aMessage);
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MHash* ReplicateL();
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MHash* CopyL();
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void SetKeyL(const CKey& aKey);
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void SetOperationModeL(TUid aOperationMode);
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private:
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//
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//Constructor
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//
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CSoftwareHash();
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void ConstructL(TUid aAlgorithm, TUid aOperationMode, const CKey* aKey);
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//
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//get the active implementation
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//
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MSoftwareHash* Impl();
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private:
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/**
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The Key for HMAC mode operation
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*/
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CKey* iKey;
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/**
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The Uid for the operation mode
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*/
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TUid iOperationMode;
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/**
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The hash implementation
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*/
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MSoftwareHash* iHashImpl;
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/**
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The Hmac implementation
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*/
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MSoftwareHash* iHmacImpl;
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};
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GLDEF_C inline TUint CMD_R(TUint a,TUint s)
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{
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return (a<<s) | (a>>(32-s));
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}
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}
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#endif // __CRYPTOAPI_SOFTWAREHASHBASE_H__
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