--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/authenticationservices/authenticationserver/source/server/transientkey.h	Tue Nov 24 09:06:03 2009 +0200
@@ -0,0 +1,94 @@
+/*
+* Copyright (c) 2005-2009 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: 
+* CTransientKey declaration
+*
+*/
+
+
+/**
+ @file 
+ @released
+ @internalComponent
+*/
+
+#ifndef TRANSIENTKEY_H
+#define TRANSIENTKEY_H
+
+#include <pbe.h>
+#include "authserver_client.h"
+#include "encryptedprotectionkey.h"
+
+namespace AuthServer
+{
+
+/**
+ * CTransientKey is a cryptographic key that is generated on the fly and never
+ * stored on the device.  Transient keys are used to encrypt and decrypt
+ * protection keys, they are generated by the AuthServer using data gathered
+ * from CAuthPlugin derived classes.
+ */
+class CTransientKey : public CBase
+	{
+public:
+	
+	/**
+	 * Creates a new transient key, passing in the plugin data from which to
+	 * derive it.
+	 *
+	 * @param aEncryptor encryption element to use as the key. Ownership
+	 * passes to this object.
+	 **/
+	static CTransientKey* NewL(CPBEncryptElement* aEncryptor);
+
+	/**
+	 * Creates a new transient key, passing in the plugin data from which to
+	 * derive it.
+	 *
+	 * @param aEncryptor encryption element to use as the key. Ownership
+	 * passes to this object.
+	 **/
+	static CTransientKey* NewLC(CPBEncryptElement* aEncryptor);
+
+	~CTransientKey();
+
+	/**
+	 * Create an version of the provided protection key encrypted by this
+	 * key. Ownership of the returned object is passed to the caller.
+	 *
+	 * @param aKey the protection key to encrypt.
+	 *
+	 * @return an protection key encrypted by this key.
+	 **/
+	CEncryptedProtectionKey* EncryptL(const CProtectionKey& aKey) const;
+
+	/**
+	 * Decrypts an CEncryptedProtectionKey created by this transient
+	 * key. Ownership of the returned object is passed to the caller.
+	 *
+	 * @param aKey the encrypted protection key to decrypt.
+	 *
+	 * @return a protection key
+	 **/
+	CProtectionKey* DecryptL(const CEncryptedProtectionKey& aKey) const;
+
+		
+private:
+	void ConstructL(CPBEncryptElement* aEncryptor);
+	
+	CPBEncryptElement* iPbeElement;
+    };
+}
+
+#endif // TRANSIENTKEY_H