1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/security/crypto/weakcryptospi/source/symmetric/arc4shim.cpp	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,113 @@
     1.4 +/*
     1.5 +* Copyright (c) 2006-2010 Nokia Corporation and/or its subsidiary(-ies).
     1.6 +* All rights reserved.
     1.7 +* This component and the accompanying materials are made available
     1.8 +* under the terms of the License "Eclipse Public License v1.0"
     1.9 +* which accompanies this distribution, and is available
    1.10 +* at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.11 +*
    1.12 +* Initial Contributors:
    1.13 +* Nokia Corporation - initial contribution.
    1.14 +*
    1.15 +* Contributors:
    1.16 +*
    1.17 +* Description: 
    1.18 +*
    1.19 +*/
    1.20 +
    1.21 +
    1.22 +
    1.23 +#include "arc4shim.h"
    1.24 +
    1.25 +#include <cryptospi/cryptosymmetriccipherapi.h>
    1.26 +#include <cryptospi/cryptospidef.h>
    1.27 +#include <cryptospi/plugincharacteristics.h>
    1.28 +#include <cryptostrength.h>
    1.29 +#include "../common/inlines.h"
    1.30 +#include <cryptospi/keys.h>
    1.31 +
    1.32 +using namespace CryptoSpi;
    1.33 +
    1.34 +CArc4Shim* CArc4Shim::NewL(const TDesC8& aKey, TUint aDiscardBytes)
    1.35 +	{
    1.36 +	CArc4Shim* self = NewLC(aKey, aDiscardBytes);
    1.37 +	CleanupStack::Pop(self);
    1.38 +	return self;
    1.39 +	}
    1.40 +
    1.41 +CArc4Shim* CArc4Shim::NewLC(const TDesC8& aKey, TUint aDiscardBytes)
    1.42 +	{
    1.43 +	CArc4Shim* self = new (ELeave) CArc4Shim();
    1.44 +	CleanupStack::PushL(self);
    1.45 +	self->ConstructL(aKey, aDiscardBytes);
    1.46 +	TCrypto::IsSymmetricWeakEnoughL(BytesToBits(aKey.Size()));
    1.47 +	return self;
    1.48 +	}
    1.49 +
    1.50 +void CArc4Shim::ConstructL(const TDesC8& aKey, TUint aDiscardBytes)
    1.51 +	{
    1.52 +	TKeyProperty keyProperty = {KArc4Uid, KNullUid, KSymmetricKey, KNonEmbeddedKeyUid};
    1.53 +	CCryptoParams* keyParam =CCryptoParams::NewLC();
    1.54 +	keyParam->AddL(aKey, KSymmetricKeyParameterUid);
    1.55 +	iKey=CKey::NewL(keyProperty, *keyParam);
    1.56 +	CleanupStack::PopAndDestroy(keyParam);
    1.57 +	
    1.58 +	iAlgorithmParams = CCryptoParams::NewL();
    1.59 +	iAlgorithmParams->AddL(aDiscardBytes, KARC4DiscardBytes);
    1.60 +
    1.61 +	CSymmetricCipherFactory::CreateSymmetricCipherL(
    1.62 +												iSymmetricCipherImpl,
    1.63 +												KArc4Uid,
    1.64 +												*iKey,
    1.65 +												KCryptoModeNoneUid,
    1.66 +												KOperationModeNoneUid,
    1.67 +												KPaddingModeNoneUid,
    1.68 +												iAlgorithmParams);
    1.69 +	}
    1.70 +
    1.71 +CArc4Shim::~CArc4Shim()
    1.72 +	{
    1.73 +	delete iSymmetricCipherImpl;
    1.74 +	delete iKey;	
    1.75 +	delete iAlgorithmParams;
    1.76 +	}
    1.77 +
    1.78 +void CArc4Shim::Reset()
    1.79 +	{
    1.80 +	iSymmetricCipherImpl->Reset();
    1.81 +	}
    1.82 +
    1.83 +TInt CArc4Shim::BlockSize() const
    1.84 +	{
    1.85 +	return iSymmetricCipherImpl->BlockSize() >> 3; // Convert to bits
    1.86 +	}
    1.87 +
    1.88 +TInt CArc4Shim::KeySize() const
    1.89 +	{
    1.90 +	return iSymmetricCipherImpl->KeySize();
    1.91 +	}
    1.92 +
    1.93 +void CArc4Shim::Process(const TDesC8& aInput, TDes8& aOutput)
    1.94 +	{
    1.95 +	TRAP_IGNORE(iSymmetricCipherImpl->ProcessL(aInput, aOutput);)
    1.96 +	}
    1.97 +
    1.98 +void CArc4Shim::ProcessFinalL(const TDesC8& aInput, TDes8& aOutput)
    1.99 +	{
   1.100 +	iSymmetricCipherImpl->ProcessFinalL(aInput, aOutput);
   1.101 +	}
   1.102 +
   1.103 +TInt CArc4Shim::MaxOutputLength(TInt aInputLength) const
   1.104 +	{
   1.105 +	return iSymmetricCipherImpl->MaxOutputLength(aInputLength);
   1.106 +	}
   1.107 +
   1.108 +TInt CArc4Shim::MaxFinalOutputLength(TInt aInputLength) const
   1.109 +	{
   1.110 +	return iSymmetricCipherImpl->MaxFinalOutputLength(aInputLength);
   1.111 +	}
   1.112 +
   1.113 +CArc4Shim::CArc4Shim()
   1.114 +	{		
   1.115 +	}
   1.116 +