1 /*

     2 * Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *

    16 */

    17 

    18 

    19 #include <asymmetric.h>

    20 #include <asymmetrickeys.h>

    21 #include <bigint.h>

    22 

    23 EXPORT_C CDH* CDH::NewL(const CDHPrivateKey& aPrivateKey)

    24 	{

    25 	CDH* self = new(ELeave) CDH(aPrivateKey);

    26 	return self;

    27 	}

    28 

    29 EXPORT_C CDH* CDH::NewLC(const CDHPrivateKey& aPrivateKey)

    30 	{

    31 	CDH* self = NewL(aPrivateKey);

    32 	CleanupStack::PushL(self);

    33 	return self;

    34 	}

    35 

    36 EXPORT_C HBufC8* CDH::AgreeL(const CDHPublicKey& aPublicKey) const

    37 	{

    38 	//Calculate X^x mod N

    39 	RInteger result = TInteger::ModularExponentiateL(aPublicKey.X(), 

    40 		iPrivateKey.x(), aPublicKey.N());

    41 	CleanupStack::PushL(result);

    42 	HBufC8* key = result.BufferLC();

    43 	CleanupStack::Pop(key);

    44 	CleanupStack::PopAndDestroy(&result);

    45 	return key;

    46 	}

    47 

    48 EXPORT_C CDH::CDH(const CDHPrivateKey& aPrivateKey) : iPrivateKey(aPrivateKey)

    49 	{

    50 	}

    51 

    52