--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/cryptoplugins/cryptospiplugins/source/softwarecrypto/rijndaelimpl.h Fri Nov 06 13:21:00 2009 +0200
@@ -0,0 +1,128 @@
+/*
+* Copyright (c) 2006-2009 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:
+*
+*/
+
+
+#ifndef __RIJNDAELIMPL_H__
+#define __RIJNDAELIMPL_H__
+
+/**
+@file
+@internalComponent
+@released
+*/
+
+#include <e32base.h>
+#include <e32cmn.h>
+#include "keys.h"
+#include "symmetriccipherimpl.h"
+
+/**
+Plug-in class for AES (Rijndael) block cipher
+*/
+namespace SoftwareCrypto
+ {
+ using namespace CryptoSpi;
+
+ NONSHARABLE_CLASS(CRijndaelImpl) : public CSymmetricBlockCipherImpl
+ {
+ public:
+ /**
+ Creates an instance of an AES (Rijndael) symmetric cipher plug-in.
+ @param aKey The key
+ @param aCryptoMode Whether to encrypt or decrypt
+ @param aOperationMode The block cipher mode ECB, CBC, CTR etc
+ @param aPadding The padding scheme to use None, SSLv3, PKCS#7
+ @return A pointer to a CRijndaelImpl instance
+ */
+ static CRijndaelImpl* NewL(const CKey& aKey,
+ TUid aCryptoMode, TUid aOperationMode, TUid aPadding);
+
+ /**
+ Creates an instance of an AES (Rijndael) symmetric cipher plug-in.
+ A pointer to the plug-in instance is placed on the cleanup stack.
+ @param aKey The key
+ @param aCryptoMode Whether to encrypt or decrypt
+ @param aOperationMode The block cipher mode ECB, CBC, CTR etc
+ @param aPadding The padding scheme to use None, SSLv3, PKCS#7
+ @return A pointer to a CRijndaelImpl instance
+ */
+ static CRijndaelImpl* NewLC(const CKey& aKey,
+ TUid aCryptoMode, TUid aOperationMode, TUid aPadding);
+
+ // From CSymmetricCipherImpl
+ TBool IsValidKeyLength(TInt aKeyBytes) const;
+ TUid ImplementationUid() const;
+ const CExtendedCharacteristics* GetExtendedCharacteristicsL();
+
+ static CExtendedCharacteristics* CreateExtendedCharacteristicsL();
+
+ /// Destructor
+ ~CRijndaelImpl();
+
+ private:
+ /**
+ Constructor
+ @param aOperationMode The mode of operation e.g. CBC
+ @param aCryptoMode Whether to encrypt or decrypt
+ @param aPaddingMode The padding mode to use. None, SSL, PKCS#7
+ */
+ CRijndaelImpl(TUid aOperationMode, TUid aCryptoMode, TUid aPaddingMode);
+
+ /// second phase of construction
+ void ConstructL(const CKey& aKey);
+
+ /**
+ Creates the key schedule iK from CBlockTransformationImpl::iKey.
+ This should be called from ConstructL and Reset
+ */
+ void SetKeySchedule();
+
+ /**
+ Setup the key schedule for encryption
+ @param aKey The input key
+ @param aKeySchedule The pointer to the key schedule buffer
+ */
+ void SetEncryptKeySchedule(const TDesC8& aKey, TUint32* aKeySchedule);
+
+ /**
+ Setup the key schedule for decryption
+ @param aKey The input key
+ @param aKeySchedule The pointer to the key schedule buffer
+ */
+ void SetDecryptKeySchedule(const TDesC8& aKey, TUint32* aKeySchedule);
+
+ // From CSymmetricBlockCipherImpl
+ void TransformEncrypt(TUint8* aBuffer, TUint aNumBlocks);
+ void TransformDecrypt(TUint8* aBuffer, TUint aNumBlocks);
+
+ private:
+
+ /**
+ The key-schedule size in WORDS
+
+ The maximum size is (((KAESMaxBlockSize/4)+6)+1)*4
+ */
+ static const TUint32 KKeyScheduleSize = 60;
+
+ /// the key schedule
+ TUint32 iK[KKeyScheduleSize];
+
+ TInt iRounds;
+ };
+ }
+
+#endif //__RIJNDAELIMPL_H__