--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crypto/weakcryptospi/source/symmetric/rc2shim.cpp	Fri Nov 13 10:07:38 2009 +0530
@@ -0,0 +1,204 @@
+/*
+* Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "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: 
+*
+*/
+
+
+#include "rc2shim.h"
+
+#include <cryptospi/cryptoparams.h>
+#include "cryptosymmetriccipherapi.h"
+#include <cryptospi/cryptospidef.h>
+#include <cryptospi/plugincharacteristics.h>
+#include "keys.h"
+#include <cryptostrength.h>
+
+#include "../common/inlines.h"
+
+using namespace CryptoSpi;
+
+// CRC2EncryptorShim ////////////////////////////////////////////////////////
+CRC2EncryptorShim* CRC2EncryptorShim::NewL(const TDesC8& aKey, TInt aEffectiveKeyLenBits)
+	{
+	CRC2EncryptorShim* self = CRC2EncryptorShim::NewLC(aKey, aEffectiveKeyLenBits);
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+CRC2EncryptorShim* CRC2EncryptorShim::NewLC(const TDesC8& aKey, TInt aEffectiveKeyLenBits)
+	{
+	CRC2EncryptorShim* self = new (ELeave) CRC2EncryptorShim();
+	CleanupStack::PushL(self);
+	self->ConstructL(aKey, aEffectiveKeyLenBits);
+	// weak enough if either aKey or aEffectiveKeyLenBits is weak
+	TInt minKeySize = Min(aEffectiveKeyLenBits, BytesToBits(aKey.Size()));
+	TCrypto::IsSymmetricWeakEnoughL(minKeySize);
+	return self;
+	}
+
+CRC2EncryptorShim::CRC2EncryptorShim()
+	{
+	}
+
+CRC2EncryptorShim::~CRC2EncryptorShim()
+	{
+	delete iSymmetricCipherImpl;
+	delete iKey;	
+	delete iAlgorithmParams;
+	}	
+
+void CRC2EncryptorShim::ConstructL(const TDesC8& aKey, TInt aEffectiveKeyLenBits)
+	{
+	TKeyProperty keyProperty = {KRc2Uid, KNullUid, KSymmetricKeyUid, KNonEmbeddedKeyUid};
+	CCryptoParams* keyParam =CCryptoParams::NewLC();
+	keyParam->AddL(aKey, KSymmetricKeyParameterUid);
+	iKey=CKey::NewL(keyProperty, *keyParam);
+	CleanupStack::PopAndDestroy(keyParam);
+	
+	iAlgorithmParams = CCryptoParams::NewL();
+	iAlgorithmParams->AddL(aEffectiveKeyLenBits, KRC2EffectiveKeyLenBits);
+	
+	CSymmetricCipherFactory::CreateSymmetricCipherL(
+											iSymmetricCipherImpl,
+											KRc2Uid,
+											*iKey,
+											KCryptoModeEncryptUid,
+											KOperationModeECBUid,
+											KPaddingModeNoneUid,
+											iAlgorithmParams);
+	}		
+
+TInt CRC2EncryptorShim::BlockSize() const
+	{
+	// SPI returns block size in BITS
+	return BitsToBytes(iSymmetricCipherImpl->BlockSize());
+	}	
+
+TInt CRC2EncryptorShim::KeySize() const
+	{
+	return iSymmetricCipherImpl->KeySize();
+	}	
+
+void CRC2EncryptorShim::Transform(TDes8& aBlock)
+	{
+	iOutputBlock.Zero();
+	TRAP_IGNORE(iSymmetricCipherImpl->ProcessL(aBlock, iOutputBlock);)
+	aBlock = iOutputBlock;
+	}
+
+void CRC2EncryptorShim::Reset()
+	{
+	iSymmetricCipherImpl->Reset();
+	}	
+
+TInt CRC2EncryptorShim::Extension_(TUint aExtensionId, TAny*& a0, TAny* /*a1*/)
+	{
+	TInt ret(KErrExtensionNotSupported);
+	
+	if (KSymmetricCipherInterface == aExtensionId && iSymmetricCipherImpl)
+		{
+		a0=iSymmetricCipherImpl;
+		ret=KErrNone;	
+		}		
+	return ret;
+	}	
+
+// CRC2DecryptorShim ////////////////////////////////////////////////////////
+CRC2DecryptorShim* CRC2DecryptorShim::NewL(const TDesC8& aKey, TInt aEffectiveKeyLenBits)
+	{
+	CRC2DecryptorShim* self = CRC2DecryptorShim::NewLC(aKey, aEffectiveKeyLenBits);
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+
+CRC2DecryptorShim* CRC2DecryptorShim::NewLC(const TDesC8& aKey, TInt aEffectiveKeyLenBits)
+	{
+	CRC2DecryptorShim* self = new (ELeave) CRC2DecryptorShim();
+	CleanupStack::PushL(self);
+	self->ConstructL(aKey, aEffectiveKeyLenBits);
+	// weak enough if either aKey or aEffectiveKeyLenBits is weak
+	TInt minKeySize = Min(aEffectiveKeyLenBits, BytesToBits(aKey.Size()));
+	TCrypto::IsSymmetricWeakEnoughL(minKeySize);
+	return self;
+	}
+
+CRC2DecryptorShim::CRC2DecryptorShim()
+	{	
+	}
+
+CRC2DecryptorShim::~CRC2DecryptorShim()
+	{
+	delete iSymmetricCipherImpl;
+	delete iKey;
+	delete iAlgorithmParams;			
+	}
+
+
+void CRC2DecryptorShim::ConstructL(const TDesC8& aKey, TInt aEffectiveKeyLenBits)
+	{
+	TKeyProperty keyProperty = {KRc2Uid, KNullUid, KSymmetricKeyUid, KNonEmbeddedKeyUid};
+	CCryptoParams* keyParam =CCryptoParams::NewLC();
+	keyParam->AddL(aKey, KSymmetricKeyParameterUid);
+	iKey=CKey::NewL(keyProperty, *keyParam);
+	CleanupStack::PopAndDestroy(keyParam);
+
+	iAlgorithmParams = CCryptoParams::NewL();
+	iAlgorithmParams->AddL(aEffectiveKeyLenBits, KRC2EffectiveKeyLenBits);
+	
+	CSymmetricCipherFactory::CreateSymmetricCipherL(
+												iSymmetricCipherImpl,
+												KRc2Uid,
+												*iKey,
+												KCryptoModeDecryptUid,
+												KOperationModeECBUid,
+												KPaddingModeNoneUid,
+												iAlgorithmParams);	
+	}	
+
+TInt CRC2DecryptorShim::BlockSize() const
+	{
+	// SPI returns block size in BITS
+	return BitsToBytes(iSymmetricCipherImpl->BlockSize());
+	}
+	
+TInt CRC2DecryptorShim::KeySize() const
+	{
+	return iSymmetricCipherImpl->KeySize();
+	}	
+
+void CRC2DecryptorShim::Transform(TDes8& aBlock)
+	{
+	iOutputBlock.Zero();	
+	TRAP_IGNORE(iSymmetricCipherImpl->ProcessL(aBlock, iOutputBlock);)
+	aBlock = iOutputBlock;	
+	}
+
+void CRC2DecryptorShim::Reset()
+	{
+	iSymmetricCipherImpl->Reset();
+	}
+
+TInt CRC2DecryptorShim::Extension_(TUint aExtensionId, TAny*& a0, TAny* /*a1*/)
+	{
+	TInt ret(KErrExtensionNotSupported);
+	
+	if (CryptoSpi::KSymmetricCipherInterface == aExtensionId && iSymmetricCipherImpl)
+		{
+		a0=iSymmetricCipherImpl;
+		ret=KErrNone;	
+		}		
+	return ret;
+	}