sl@0: /*
sl@0: * Copyright (c) 2006-2010 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of the License "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description: 
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: #include "rijndaelshim.h"
sl@0: 
sl@0: #include <cryptospi/cryptosymmetriccipherapi.h>
sl@0: #include <cryptospi/cryptospidef.h>
sl@0: #include <cryptospi/plugincharacteristics.h>
sl@0: #include <cryptospi/keys.h>
sl@0: #include <cryptostrength.h>
sl@0: 
sl@0: #include "../common/inlines.h"
sl@0: 
sl@0: using namespace CryptoSpi;
sl@0: 
sl@0: // CAESEncryptorShim ////////////////////////////////////////////////////////
sl@0: CAESEncryptorShim* CAESEncryptorShim::NewL(const TDesC8& aKey)
sl@0: 	{
sl@0: 	CAESEncryptorShim* self = CAESEncryptorShim::NewLC(aKey);
sl@0: 	CleanupStack::Pop(self);
sl@0: 	return self;
sl@0: 	}
sl@0: 
sl@0: CAESEncryptorShim* CAESEncryptorShim::NewLC(const TDesC8& aKey)
sl@0: 	{
sl@0: 	CAESEncryptorShim* self = new (ELeave) CAESEncryptorShim();
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL(aKey);
sl@0: 	TCrypto::IsSymmetricWeakEnoughL(BytesToBits(aKey.Size()));
sl@0: 	return self;
sl@0: 	}
sl@0: 
sl@0: CAESEncryptorShim::CAESEncryptorShim()
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: CAESEncryptorShim::~CAESEncryptorShim()
sl@0: 	{
sl@0: 	delete iSymmetricCipherImpl;
sl@0: 	delete iKey;
sl@0: 	}	
sl@0: 
sl@0: void CAESEncryptorShim::ConstructL(const TDesC8& aKey)
sl@0: 	{
sl@0: 	TKeyProperty keyProperty = {KAesUid, KNullUid, KSymmetricKeyUid, KNonEmbeddedKeyUid};
sl@0: 	CCryptoParams* keyParam =CCryptoParams::NewLC();
sl@0: 	keyParam->AddL(aKey, KSymmetricKeyParameterUid);
sl@0: 	iKey=CKey::NewL(keyProperty, *keyParam);
sl@0: 	CleanupStack::PopAndDestroy(keyParam);
sl@0: 	CSymmetricCipherFactory::CreateSymmetricCipherL(
sl@0: 												iSymmetricCipherImpl,
sl@0: 												KAesUid,
sl@0: 												*iKey,
sl@0: 												KCryptoModeEncryptUid,
sl@0: 												KOperationModeECBUid,
sl@0: 												KPaddingModeNoneUid,
sl@0: 												NULL);
sl@0: 	}		
sl@0: 
sl@0: TInt CAESEncryptorShim::BlockSize() const
sl@0: 	{
sl@0: 	return BitsToBytes(iSymmetricCipherImpl->BlockSize());
sl@0: 	}	
sl@0: 
sl@0: TInt CAESEncryptorShim::KeySize() const
sl@0: 	{
sl@0: 	return iSymmetricCipherImpl->KeySize();
sl@0: 	}	
sl@0: 
sl@0: void CAESEncryptorShim::Transform(TDes8& aBlock)
sl@0: 	{
sl@0: 	iOutputBlock.Zero();
sl@0: 	TRAP_IGNORE(iSymmetricCipherImpl->ProcessL(aBlock, iOutputBlock);)
sl@0: 	aBlock = iOutputBlock;
sl@0: 	}
sl@0: 
sl@0: void CAESEncryptorShim::Reset()
sl@0: 	{
sl@0: 	iSymmetricCipherImpl->Reset();
sl@0: 	}	
sl@0: 
sl@0: TInt CAESEncryptorShim::Extension_(TUint aExtensionId, TAny*& a0, TAny* /*a1*/)
sl@0: 	{
sl@0: 	TInt ret(KErrExtensionNotSupported);
sl@0: 	
sl@0: 	if (CryptoSpi::KSymmetricCipherInterface == aExtensionId && iSymmetricCipherImpl)
sl@0: 		{
sl@0: 		a0=iSymmetricCipherImpl;
sl@0: 		ret=KErrNone;	
sl@0: 		}		
sl@0: 	return ret;
sl@0: 	}	
sl@0: 
sl@0: // CAESDecryptorShim ////////////////////////////////////////////////////////		
sl@0: 
sl@0: CAESDecryptorShim* CAESDecryptorShim::NewL(const TDesC8& aKey)
sl@0: 	{
sl@0: 	CAESDecryptorShim* self = CAESDecryptorShim::NewLC(aKey);
sl@0: 	CleanupStack::Pop(self);
sl@0: 	return self;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: CAESDecryptorShim* CAESDecryptorShim::NewLC(const TDesC8& aKey)
sl@0: 	{
sl@0: 	CAESDecryptorShim* self = new (ELeave) CAESDecryptorShim();
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL(aKey);
sl@0: 	TCrypto::IsSymmetricWeakEnoughL(BytesToBits(aKey.Size()));
sl@0: 	return self;
sl@0: 	}
sl@0: 
sl@0: CAESDecryptorShim::CAESDecryptorShim()
sl@0: 	{	
sl@0: 	}
sl@0: 
sl@0: CAESDecryptorShim::~CAESDecryptorShim()
sl@0: 	{
sl@0: 	delete iSymmetricCipherImpl;
sl@0: 	delete iKey;			
sl@0: 	}
sl@0: 
sl@0: void CAESDecryptorShim::ConstructL(const TDesC8& aKey)
sl@0: 	{
sl@0: 	TKeyProperty keyProperty = {KAesUid, KNullUid, KSymmetricKeyUid, KNonEmbeddedKeyUid};
sl@0: 	CCryptoParams* keyParam =CCryptoParams::NewLC();
sl@0: 	keyParam->AddL(aKey, KSymmetricKeyParameterUid);
sl@0: 	iKey=CKey::NewL(keyProperty, *keyParam);
sl@0: 	CleanupStack::PopAndDestroy(keyParam);
sl@0: 	CSymmetricCipherFactory::CreateSymmetricCipherL(
sl@0: 												iSymmetricCipherImpl,
sl@0: 												KAesUid,
sl@0: 												*iKey,
sl@0: 												KCryptoModeDecryptUid,
sl@0: 												KOperationModeECBUid,
sl@0: 												KPaddingModeNoneUid,
sl@0: 												NULL);	
sl@0: 	}	
sl@0: 
sl@0: TInt CAESDecryptorShim::BlockSize() const
sl@0: 	{
sl@0: 	return BitsToBytes(iSymmetricCipherImpl->BlockSize());
sl@0: 	}
sl@0: 	
sl@0: TInt CAESDecryptorShim::KeySize() const
sl@0: 	{
sl@0: 	return iSymmetricCipherImpl->KeySize();
sl@0: 	}	
sl@0: 
sl@0: void CAESDecryptorShim::Transform(TDes8& aBlock)
sl@0: 	{
sl@0: 	iOutputBlock.Zero();	
sl@0: 	TRAP_IGNORE(iSymmetricCipherImpl->ProcessL(aBlock, iOutputBlock);)
sl@0: 	aBlock = iOutputBlock;	
sl@0: 	}
sl@0: 
sl@0: void CAESDecryptorShim::Reset()
sl@0: 	{
sl@0: 	iSymmetricCipherImpl->Reset();
sl@0: 	}
sl@0: 
sl@0: TInt CAESDecryptorShim::Extension_(TUint aExtensionId, TAny*& a0, TAny* /*a1*/)
sl@0: 	{
sl@0: 	TInt ret(KErrExtensionNotSupported);
sl@0: 	
sl@0: 	if (CryptoSpi::KSymmetricCipherInterface == aExtensionId && iSymmetricCipherImpl)
sl@0: 		{
sl@0: 		a0=iSymmetricCipherImpl;
sl@0: 		ret=KErrNone;	
sl@0: 		}		
sl@0: 	return ret;
sl@0: 	}