/*

* 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:    .

*

*/

// INCLUDES

#include <e32std.h>

#include "srtpmasterkey.h"

#include "srtpmastersalt.h"

#include "srtpcryptocontext.h"

#include "srtpdef.h"

#include "srtputils.h"

// ---------------------------------------------------------------------------

// Two-phased constructor. Used when stream uses its own cryptographic context

// 

// ---------------------------------------------------------------------------

//

EXPORT_C CSRTPMasterKey* CSRTPMasterKey::NewL( const TDesC8& aKey, 

                       const TDesC8& aMKI, 

                       TUint aN_E, 

                       TUint aN_A )

    {

    CSRTPMasterKey* self = CSRTPMasterKey::NewLC( aKey,

                                                  aMKI,

                                                  aN_E, 

                                                  aN_A);

    CleanupStack::Pop( self );        

    return self;

    }	

// ---------------------------------------------------------------------------

// Two-phased constructor. Used when stream uses its own cryptographic context

// 

// ---------------------------------------------------------------------------

//

EXPORT_C CSRTPMasterKey* CSRTPMasterKey::NewLC( const TDesC8& aKey, 

                       const TDesC8& aMKI, 

                       TUint aN_E, 

                       TUint aN_A )

    {

    CSRTPMasterKey* self = new( ELeave )CSRTPMasterKey ( aN_E, 

                                                         aN_A);                                                

    CleanupStack::PushL( self );    

    self->ConstructL( aKey, aMKI );

    return self;

    }	

// ---------------------------------------------------------------------------

// CSRTPMasterKey::CSRTPMasterKey

// ---------------------------------------------------------------------------

//

CSRTPMasterKey::CSRTPMasterKey( TUint aN_E, 

                                TUint aN_A) :

            iN_E( aN_E ),

            iN_A( aN_A )

            {

            }

// -----------------------------------------------------------------------------

// CSRTPMasterKey::ConstructL

// -----------------------------------------------------------------------------

//

void CSRTPMasterKey::ConstructL(  const TDesC8& aKey, 

                                  const TDesC8& aMKI )

	{

    iKey = aKey.AllocL();

    if(aKey.Length()>16)

	    {

	    TSRTPUtils::HexString( *iKey );	

	    }

    iMKI = aMKI.AllocL();

    iMKI->Des().SetLength(aMKI.Length());

   	}

// ---------------------------------------------------------------------------

// CSRTPMasterKey::~CSRTPMasterKey

// ---------------------------------------------------------------------------

//

CSRTPMasterKey::~CSRTPMasterKey( )

    {

    delete iKey;

    delete iMKI;

    }

// ---------------------------------------------------------------------------

// CSRTPMasterKey::MasterKey

// ---------------------------------------------------------------------------

//

EXPORT_C  const TDesC8& CSRTPMasterKey::MasterKey() const

    {

    return *iKey;

    }

// ---------------------------------------------------------------------------

// CCSRTPMasterKey::MKI

// ---------------------------------------------------------------------------

//

EXPORT_C  const TDesC8& CSRTPMasterKey::MKI() const

    {

    return *iMKI;

    };

// ---------------------------------------------------------------------------

// CSRTPMasterKey::EncrKeyLength

// ---------------------------------------------------------------------------

//

EXPORT_C  TUint CSRTPMasterKey::EncrKeyLength() const

    {

    return iN_E;

    }

// ---------------------------------------------------------------------------

// CSRTPMasterKey::AuthKeyLength

// ---------------------------------------------------------------------------

//

EXPORT_C  TUint CSRTPMasterKey::AuthKeyLength() const

    {

    return iN_A;

    }

// ---------------------------------------------------------------------------

// CSRTPMasterKey::operator=

// ---------------------------------------------------------------------------

//

 const CSRTPMasterKey& CSRTPMasterKey::operator=(const CSRTPMasterKey& aKey)

    {

    return aKey;

    }

// ---------------------------------------------------------------------------

// CSRTPMasterKey::Valid()

// ---------------------------------------------------------------------------

//       

EXPORT_C  TBool CSRTPMasterKey::Valid() const

    {    

    if (iKey->Length() != KSRTPDefaultMasterKeyLength/8)

        {

        return EFalse;

        }       

    if (iN_E != KSRTPDefSessionEncryptionKeyLength)

        {

        return EFalse;

        }   

    if (iN_A != KSRTPDefSessionAuthenticationKeyLength)

        {

        return EFalse;

        }

    return ETrue;

    }