--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crypto/weakcrypto/inc/3des.h	Wed Jul 08 11:25:26 2009 +0100
@@ -0,0 +1,144 @@
+/*
+* Copyright (c) 2002-2009 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: 
+* ** IMPORTANT ** PublishedPartner API's in this file are published to 3rd party developers via the 
+* Symbian website. Changes to these API's should be treated as PublishedAll API changes and the Security TA should be consulted.
+* 3DES implementation
+*
+*/
+
+
+
+
+/**
+ @file 
+ @internalAll
+*/
+ 
+#ifndef __3DES_H__
+#define __3DES_H__
+
+#include "des.h"
+
+/**
+* Abstract base class for triple-DES.
+*
+* Implements features common to triple-DES encryption and decryption.
+*
+* @publishedPartner
+* @released 
+*/
+class C3DES : public CDES
+{
+public:
+	virtual void Transform(TDes8& aBlock);
+	virtual void Reset();
+	virtual TInt BlockSize() const;
+	virtual TInt KeySize() const;
+protected:
+	/** @internalAll */
+	C3DES();
+	virtual void ConstructL(const TDesC8& aKey);
+	/**
+	 * Initialises the three key schedule arrays from the specified key.
+	 * 
+	 * @param aKey	The key to be used for encryption. The key length
+	 *				must be K3DESKeySize = 24 bytes.
+	 */
+	virtual void DoSetKey(const TDesC8& aKey) = 0;
+	
+protected:
+	/** The second key schedule array */
+	TUint32 iK2[KDESScheduleSizeInWords];	//	= 32
+	/** The third key schedule array */
+	TUint32 iK3[KDESScheduleSizeInWords];
+};
+
+/**
+* Concrete class for triple-DES encryption.
+*
+* @publishedPartner
+* @released 
+*/
+class C3DESEncryptor : public C3DES
+{
+public:
+	/**
+	* Creates an instance of this class.
+	*
+	* @param aKey	The key to be used for encryption. The key length
+	*				must be K3DESKeySize = 24 bytes.
+	* @return		A pointer to the new C3DESEncryptor object.
+	*
+	* @leave KErrKeyNotWeakEnough	If the key size is larger than that allowed by the
+	*								cipher strength restrictions of the crypto library.
+	*								See TCrypto::IsSymmetricWeakEnoughL()
+	*/
+	IMPORT_C static C3DESEncryptor* NewL(const TDesC8& aKey);
+
+	/**
+	* Creates an instance of this class and leaves it on the cleanup stack.
+	*
+	* @param aKey	The key to be used for encryption. The key length
+	*				must be K3DESKeySize = 24 bytes.
+	* @return		A pointer to the new C3DESEncryptor object.
+	*
+	* @leave KErrKeyNotWeakEnough 	If the key size is larger than that allowed by the
+	* 								cipher strength restrictions of the crypto library.
+	* 								See TCrypto::IsSymmetricWeakEnoughL()
+	*/
+	IMPORT_C static C3DESEncryptor* NewLC(const TDesC8& aKey);
+protected:
+	virtual void DoSetKey(const TDesC8& aKey);
+};
+
+/**
+* Concrete class for triple-DES decryption.
+*
+* @publishedPartner
+* @released 
+*/
+class C3DESDecryptor : public C3DES
+{
+public:
+	/**
+	* Creates an instance of this class.
+	*
+	* @param aKey	The key to be used for decryption. The key length
+	*				must be K3DESKeySize = 24 bytes.
+	* @return		A pointer to the new C3DESDecryptor object.
+	*
+	* @leave KErrKeyNotWeakEnough	If the key size is larger than that allowed by the
+	*								cipher strength restrictions of the crypto library.
+	*								See TCrypto::IsSymmetricWeakEnoughL()
+	*/
+	IMPORT_C static C3DESDecryptor* NewL(const TDesC8& aKey);
+
+	/**
+	* Creates an instance of this class and leaves it on the cleanup stack.
+	*
+	* @param aKey	The key to be used for decryption. The key length
+	*				must be K3DESKeySize = 24 bytes.
+	* @return		A pointer to the new C3DESDecryptor object.
+	*
+	* @leave KErrKeyNotWeakEnough	If the key size is larger than that allowed by the
+	*								cipher strength restrictions of the crypto library.  
+	*								See TCrypto::IsSymmetricWeakEnoughL()
+	*/
+	IMPORT_C static C3DESDecryptor* NewLC(const TDesC8& aKey);
+protected:
+	virtual void DoSetKey(const TDesC8& aKey);
+};
+
+#endif	//	__3DES_H__