1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/security/crypto/weakcryptospi/test/tplugins/inc/3desimpl.h	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,109 @@
     1.4 +/*
     1.5 +* Copyright (c) 2006-2010 Nokia Corporation and/or its subsidiary(-ies).
     1.6 +* All rights reserved.
     1.7 +* This component and the accompanying materials are made available
     1.8 +* under the terms of the License "Eclipse Public License v1.0"
     1.9 +* which accompanies this distribution, and is available
    1.10 +* at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.11 +*
    1.12 +* Initial Contributors:
    1.13 +* Nokia Corporation - initial contribution.
    1.14 +*
    1.15 +* Contributors:
    1.16 +*
    1.17 +* Description: 
    1.18 +*
    1.19 +*/
    1.20 +
    1.21 +
    1.22 +#ifndef	__3DESIMPL_H__
    1.23 +#define	__3DESIMPL_H__
    1.24 +
    1.25 +/**
    1.26 +@file 
    1.27 +@internalComponent
    1.28 +@released
    1.29 +*/
    1.30 +
    1.31 +#include <e32base.h>
    1.32 +#include <e32cmn.h>
    1.33 +#include <cryptospi/keys.h>
    1.34 +#include "desimpl.h"
    1.35 +
    1.36 +/**
    1.37 +Plug-in class for 3DES block cipher
    1.38 +*/
    1.39 +namespace SoftwareCrypto
    1.40 +	{
    1.41 +	NONSHARABLE_CLASS(C3DesImpl) : public CDesImpl
    1.42 +		{
    1.43 +	public:
    1.44 +	
    1.45 +		/**
    1.46 +		Creates an instance of a 3DES (Data Encryption Standard) symmetric cipher plug-in.
    1.47 +		@param aKey The key
    1.48 +		@param aCryptoMode Whether to encrypt or decrypt
    1.49 +		@param aOperationMode The block cipher mode ECB, CBC, CTR etc
    1.50 +		@param aPadding The padding scheme to use None, SSLv3, PKCS#7
    1.51 +		@return A pointer to a C3DesImpl instance
    1.52 +		*/
    1.53 +		static C3DesImpl* NewL(const CryptoSpi::CKey& aKey, 
    1.54 +			TUid aCryptoMode, TUid aOperationMode, TUid aPadding);
    1.55 +
    1.56 +		/**
    1.57 +		Creates an instance of a 3DES (Data Encryption Standard) symmetric cipher plug-in.
    1.58 +		A pointer to the plug-in instance is placed on the cleanup stack.
    1.59 +		@param aKey The key
    1.60 +		@param aCryptoMode Whether to encrypt or decrypt
    1.61 +		@param aOperationMode The block cipher mode ECB, CBC, CTR etc
    1.62 +		@param aPadding The padding scheme to use None, SSLv3, PKCS#7
    1.63 +		@return A pointer to a C3DesImpl instance
    1.64 +		*/
    1.65 +		static C3DesImpl* NewLC(const CryptoSpi::CKey& aKey, 
    1.66 +			TUid aCryptoMode, TUid aOperationMode, TUid aPadding);
    1.67 +		
    1.68 +		// From CSymmetricCipherImpl
    1.69 +		TBool IsValidKeyLength(TInt aKeyBytes) const;
    1.70 +		TInt GetKeyStrength() const;
    1.71 +		TUid ImplementationUid() const;
    1.72 +				
    1.73 +		/// 3Destructor
    1.74 +		~C3DesImpl();
    1.75 +
    1.76 +	private:
    1.77 +		/**
    1.78 +		Constructor
    1.79 +		@param aOperationMode The mode of operation e.g. CBC
    1.80 +		@param aCryptoMode Whether to encrypt or decrypt
    1.81 +		@param aPaddingMode The padding mode to use. None, SSL, PKCS#7
    1.82 +		*/
    1.83 +		C3DesImpl(TUid aOperationMode, TUid aCryptoMode, TUid aPaddingMode);
    1.84 +			
    1.85 +		///	second phase of construction	
    1.86 +		void ConstructL(const CryptoSpi::CKey& aKey);						
    1.87 +
    1.88 +		/**
    1.89 +		Creates the key schedules iK1, iK2, iK3 from CBlockTransformationImpl::iKey.
    1.90 +		This should be called from ConstructL and Reset
    1.91 +		*/
    1.92 +		void SetKeySchedule();
    1.93 +
    1.94 +		// From CSymmetricBlockCipherImpl
    1.95 +		void TransformEncrypt(TUint8* aBuffer, TUint aNumBlocks);
    1.96 +		void TransformDecrypt(TUint8* aBuffer, TUint aNumBlocks);
    1.97 +		
    1.98 +	private:
    1.99 +		/// Size of the key schedule in words
   1.100 +		static const TUint KKeyScheduleSize = 32;
   1.101 +		
   1.102 +		/// the key schedules
   1.103 +		TUint32 iK1[KKeyScheduleSize];
   1.104 +		TUint32 iK2[KKeyScheduleSize];
   1.105 +		TUint32 iK3[KKeyScheduleSize];
   1.106 +		
   1.107 +		static const TUint8 K3DesBlockBytes = 8;
   1.108 +		static const TUint8 K3DesKeyBytes = 24;
   1.109 +		};
   1.110 +	}
   1.111 +
   1.112 +#endif // __3DESIMPL_H__