/*

* 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:    Provides class for AES CM 128 bit encryption/decryption.

*

*/

#include "srtpcipher_aescm128.h"

#include "srtpaesctrcrypto.h"

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

// CSRTPCipherAESCM128::NewL

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

//

CSRTPCipherAESCM128* CSRTPCipherAESCM128::NewL()

    {

    CSRTPCipherAESCM128* self = CSRTPCipherAESCM128::NewLC();

    CleanupStack::Pop(self);

    return self;    

    }

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

// CSRTPCipherAESCM128::NewLC

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

//

CSRTPCipherAESCM128* CSRTPCipherAESCM128::NewLC()

    {

    CSRTPCipherAESCM128* self = new( ELeave ) CSRTPCipherAESCM128();

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

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

// CSRTPCipherAESCM128::TransformL

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

//

HBufC8* CSRTPCipherAESCM128::TransformL(const TDesC8& aKey, 

                                const TDesC8& aIV, 

                                const TDesC8& aSrc )

    {    

    // encrypt/decrypt using CSrtpAESCTRCrypto

    return iCipher->EncryptL(aKey, aIV, aSrc);

    }

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

// CSRTPCipherAESCM128::ConstructL

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

//

void CSRTPCipherAESCM128::ConstructL()

    {    

    // Create AES-CTR Wrapper

    iCipher = CSrtpAESCTRCrypto::NewL();        

    }

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

// CSRTPCipherAESCM128::~CSRTPCipherAESCM128

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

//

CSRTPCipherAESCM128::~CSRTPCipherAESCM128()

    {    

    // delete AES-CTR Wrapper

    delete iCipher;

    }

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

// CSRTPCipherAESCM128::CSRTPCipherAESCM128

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

//

CSRTPCipherAESCM128::CSRTPCipherAESCM128()

    {    

    }