--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crypto/weakcryptospi/source/symmetric/3desshim.h	Fri Nov 06 13:21:00 2009 +0200
@@ -0,0 +1,145 @@
+/*
+* 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: 
+* 3DES shim classes definition
+*
+*/
+
+
+/**
+ @file
+ @internalComponent
+ @released
+*/
+
+#ifndef __3DESSHIM_H__
+#define __3DESSHIM_H__
+
+#include <3des.h>
+
+namespace CryptoSpi
+	{
+	class CSymmetricCipher;
+	class CKey;
+	}
+	
+NONSHARABLE_CLASS(C3DESEncryptorShim) : public C3DESEncryptor
+{
+public:
+	/**
+	Creates an C3DESEncryptorShim object which has the same interface
+	as 3DESEncryptor but delegates all work to a Crypto SPI plug-in.
+	
+	@param aKey The encryption key
+	@return A pointer to a C3DESEncryptorShim instance
+	*/
+	static C3DESEncryptorShim* NewL(const TDesC8& aKey);
+	
+	/**
+	Creates an C3DESEncryptorShim object which has the same interface
+	as 3DESEncryptor but delegates all work to a Crypto SPI plug-in.
+	
+	A pointer to the new object is placed on the cleanup stack
+	
+	@param aKey The encryption key
+	@return A pointer to a C3DESEncryptorShim instance
+	*/
+	static C3DESEncryptorShim* NewLC(const TDesC8& aKey);
+	
+	// From CBlockTransform
+	TInt BlockSize() const;
+	void Transform(TDes8& aBlock);
+	void Reset(void);
+	TInt KeySize(void) const;
+	
+	/// Destructor
+	~C3DESEncryptorShim();
+		
+private:
+	/// Constructor
+	C3DESEncryptorShim();
+	void ConstructL(const TDesC8& aKey);	
+	
+	// From CBase
+	TInt Extension_(TUint aExtensionId, TAny*& a0, TAny* a1);
+	
+private:
+	/// SPI delegate
+	CryptoSpi::CSymmetricCipher* iSymmetricCipherImpl;
+		
+	/// SPI requires all key to passed as key-objects
+	CryptoSpi::CKey* iKey;		
+	
+	/// Temporary output block, SPI does not overwrite input
+	/// 3DES uses 64bit blocks
+	TBuf8<16> iOutputBlock;
+};
+
+NONSHARABLE_CLASS(C3DESDecryptorShim) : public C3DESDecryptor
+{
+public:
+	/**
+	Creates an C3DESDecryptorShim object which has the same interface
+	as 3DESDecryptor but delegates all work to a Crypto SPI plug-in.
+	
+	@param aKey The decryption key
+	@return A pointer to a C3DESDecryptorShim instance
+	*/
+	static C3DESDecryptorShim* NewL(const TDesC8& aKey);
+	
+	/**
+	Creates an C3DESDecryptorShim object which has the same interface
+	as 3DESDecryptor but delegates all work to a Crypto SPI plug-in.
+	
+	A pointer to the new object is placed on the cleanup stack
+	
+	@param aKey The decryption key
+	@return A pointer to a C3DESDecryptorShim instance
+	*/
+	static C3DESDecryptorShim* NewLC(const TDesC8& aKey);
+	
+	// From CBlockTransform
+	TInt BlockSize() const;
+	void Transform(TDes8& aBlock);
+	void Reset(void);
+	TInt KeySize(void) const;
+	
+	/// Destructor
+	~C3DESDecryptorShim();
+	
+private:
+	/// Constructor	
+	C3DESDecryptorShim();	
+	void ConstructL(const TDesC8& aKey);	
+	
+	/**
+	From CBase, to allow CBufferedTransform & CBlockChainingMode
+	to determine whether the functionality may be delegated to
+	the SPI object.
+	*/ 
+	TInt Extension_(TUint aExtensionId, TAny*& a0, TAny* a1);
+	
+private:	
+	/// SPI delegate
+	CryptoSpi::CSymmetricCipher* iSymmetricCipherImpl;
+		
+	/// SPI requires all key to passed as key-objects
+	CryptoSpi::CKey* iKey;		
+	
+	/// Temporary output block, SPI does not overwrite input
+	/// 3DES uses 64bit blocks
+	TBuf8<16> iOutputBlock;
+};
+
+#endif // __3DESSHIM_H__