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/*
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* Copyright (c) 2002-2009 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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* ** IMPORTANT ** PublishedPartner API's in this file are published to 3rd party developers via the
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* Symbian website. Changes to these API's should be treated as PublishedAll API changes and the Security TA should be consulted.
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*
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*/
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/**
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@file
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@publishedPartner
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@released
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*/
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#ifndef __STREAMCIPHER_H__
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#define __STREAMCIPHER_H__
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#include <msymmetriccipher.h>
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/**
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* Abstract interface class to be implemented by Stream Ciphers.
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*/
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class CStreamCipher : public CSymmetricCipher
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{
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public: // From CSymmetricCipher
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/**
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* Implemented by calling the DoProcess() pure virtual function,
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* to be implemented by subclasses.
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*
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* @param aInput Input text.
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* @param aOutput Text after processing.
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*/
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IMPORT_C virtual void ProcessFinalL(const TDesC8& aInput, TDes8& aOutput);
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/**
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* Implemented by calling the DoProcess() pure virtual function,
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* to be implemented by subclasses.
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*
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* @param aInput Input text.
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* @param aOutput Text after processing.
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*/
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IMPORT_C virtual void Process(const TDesC8& aInput, TDes8& aOutput);
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/**
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* Gets the block size in bytes (always = 1 for stream ciphers).
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*
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* @return Cipher block size (in bytes).
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*/
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IMPORT_C virtual TInt BlockSize(void) const;
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IMPORT_C virtual TInt MaxOutputLength(TInt aInputLength) const;
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IMPORT_C virtual TInt MaxFinalOutputLength(TInt aInputLength) const;
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protected:
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/**
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* DoProcess() pure virtual function,
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* to be implemented by subclasses.
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*
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* @param aData On input, text to be processed; on return, processed text.
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*/
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IMPORT_C virtual void DoProcess(TDes8& aData) = 0;
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};
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#endif // __STREAMCIPHER_H__
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