1 /*

     2 * Copyright (c) 2004 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 "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:  DS-settings 

    15 *

    16 */

    17 

    18 

    19 

    20 // INCLUDE FILES

    21 #include "nsmldssettings.h"

    22 

    23 

    24 //=============================================

    25 //

    26 //		CNSmlDSCrypt

    27 //

    28 //=============================================

    29 

    30 //=============================================

    31 //		CNSmlDSCrypt::CNSmlDSCrypt()

    32 //		Constructor.

    33 //=============================================

    34 EXPORT_C CNSmlDSCrypt::CNSmlDSCrypt()

    35 	{

    36 	}

    37 

    38 //=============================================

    39 //		CNSmlDSCrypt::~CNSmlDSCrypt()

    40 //		Destructor.

    41 //=============================================

    42 EXPORT_C CNSmlDSCrypt::~CNSmlDSCrypt()

    43 	{

    44 	delete iOutput;

    45 	}

    46 

    47 //=============================================

    48 //		CNSmlDSCrypt::EncryptedL()

    49 //		Destructor.

    50 //=============================================

    51 EXPORT_C TDesC& CNSmlDSCrypt::EncryptedL( const TDesC& aInput )

    52 	{

    53 	delete iOutput;

    54 	iOutput = 0;

    55 

    56 	iOutput = aInput.AllocL();

    57 

    58 	TPtr ptrOutput( iOutput->Des() );

    59 	

    60 	// Keys to be used in encryption / decryption.

    61 	TUint16 key1 = 0xa576;

    62 	TUint16 key2 = 0x02f9;

    63 

    64 	for (TInt i = 0; i < iOutput->Length(); i++ )

    65 		{

    66 		key1 %= key2;

    67 		key1 <<= 7;

    68 		key1 ^= key2;

    69 		key2 %= key1;

    70 		key2 <<= 3;

    71 		key2 ^= key1;

    72 		ptrOutput[i] ^= key1;

    73 		}

    74 

    75 	return *iOutput;

    76 	}

    77 

    78 //=============================================

    79 //		CNSmlDSCrypt::DecryptedL()

    80 //		Destructor.

    81 //=============================================

    82 EXPORT_C TDesC& CNSmlDSCrypt::DecryptedL( const TDesC& aInput )

    83 	{

    84 	return EncryptedL( aInput );

    85 	}

    86 

    87 //  End of File