--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipappprotocols_plat/srtp_api/inc/srtpmastersalt.h	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,110 @@
+/*
+* Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "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:    Contains SRTP master salt class.
+*
+*/
+
+
+
+
+#ifndef __SRTP_MASTER_SALT_H__
+#define __SRTP_MASTER_SALT_H__
+
+// INCLUDES
+#include <e32def.h>
+#include <e32des8.h>
+#include "srtpdef.h"
+
+
+/**
+* Contains a salt used in encryption and decryption.
+*/
+class CSRTPMasterSalt : public CBase
+    {
+    public: // constructor
+    
+        /**
+        * Two-phased constructor.
+        * CSRTPCryptoContext takes the ownership of MasterKey and MasterSalt 
+        * @param aKey  The master salt value.
+        * @param aN_S  The length of the session salt
+        * @leave KErrNone if success, system-wide error code otherwise
+        */
+        IMPORT_C static CSRTPMasterSalt* NewL( const TDesC8& aKey, 
+                        TUint aN_S = KSRTPDefSessionSaltingKeyLength );
+
+        /**
+        * Two-phased constructor.
+        * CSRTPCryptoContext takes the ownership of MasterKey and MasterSalt 
+        * @param aKey  The master salt value.
+        * @param aN_S  The length of the session salt
+        * @leave KErrNone if success, system-wide error code otherwise
+        */
+        IMPORT_C static CSRTPMasterSalt* NewLC( const TDesC8& aKey, 
+                        TUint aN_S = KSRTPDefSessionSaltingKeyLength );
+                        
+        /**
+        * Destructor
+        */
+        ~CSRTPMasterSalt();                
+       
+        /*
+		* Gets master salt
+        * @return master salt
+        */                                
+        IMPORT_C  const TDesC8& MasterSalt() const;
+                            
+        /*
+		* Gets length of the session salt
+        * @return length of the session salt
+        */                                
+        IMPORT_C  TUint SaltLength() const;
+        
+        /*
+		* Check the validity of the whole CSRTPMasterSalt
+        * @return validity of this CSRTPMasterSalt
+        */
+        IMPORT_C  TBool Valid() const;                 
+        
+
+    private: // methods
+        
+        CSRTPMasterSalt( TUint aN_S );
+        
+        void ConstructL( const TDesC8& aKey );
+    
+        /* assignment operator */
+         const CSRTPMasterSalt& operator=(const CSRTPMasterSalt& aSalt);  
+
+    private: // data
+        /**
+        * The master salt value.
+        * The length of the salt is determined by the Size() function.
+        */
+        HBufC8 *iKey;
+
+        /**
+        * The length of the session salt
+        */
+        const TUint iN_S;
+
+    friend class CSRTPCryptoContext;
+    
+	#ifdef EUNIT_TESTING
+        friend class UT_CSRTPMasterSalt;
+    #endif         
+    };
+
+
+#endif // __SRTP_MASTER_SALT_H__