--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crypto/weakcryptospi/source/symmetric/3desshim.cpp	Fri Nov 06 13:21:00 2009 +0200
@@ -0,0 +1,191 @@
+/*
+* 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 "3desshim.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;
+
+// C3DESEncryptorShim ////////////////////////////////////////////////////////
+C3DESEncryptorShim* C3DESEncryptorShim::NewL(const TDesC8& aKey)
+	{
+	C3DESEncryptorShim* self = C3DESEncryptorShim::NewLC(aKey);
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+C3DESEncryptorShim* C3DESEncryptorShim::NewLC(const TDesC8& aKey)
+	{
+	C3DESEncryptorShim* self = new (ELeave) C3DESEncryptorShim();
+	CleanupStack::PushL(self);
+	self->ConstructL(aKey);
+	// DES only used 7 bits out of every key byte
+	TCrypto::IsSymmetricWeakEnoughL(BytesToBits(aKey.Size()) - aKey.Size());
+	return self;
+	}
+
+C3DESEncryptorShim::C3DESEncryptorShim()
+	{
+	}
+
+C3DESEncryptorShim::~C3DESEncryptorShim()
+	{
+	delete iSymmetricCipherImpl;
+	delete iKey;
+	}	
+
+void C3DESEncryptorShim::ConstructL(const TDesC8& aKey)
+	{
+	TKeyProperty keyProperty = {K3DesUid, KNullUid, KSymmetricKey, KNonEmbeddedKeyUid};
+	CCryptoParams* keyParam =CCryptoParams::NewLC();
+	keyParam->AddL(aKey, KSymmetricKeyParameterUid);
+	iKey=CKey::NewL(keyProperty, *keyParam);
+	CleanupStack::PopAndDestroy(keyParam);
+	
+	CSymmetricCipherFactory::CreateSymmetricCipherL(
+											iSymmetricCipherImpl,
+											K3DesUid,
+											*iKey,
+											KCryptoModeEncryptUid,
+											KOperationModeECBUid,
+											KPaddingModeNoneUid,
+											NULL);
+	}		
+
+TInt C3DESEncryptorShim::BlockSize() const
+	{
+	// SPI returns block size in BITS
+	return iSymmetricCipherImpl->BlockSize() >> 3;
+	}	
+
+TInt C3DESEncryptorShim::KeySize() const
+	{
+	return iSymmetricCipherImpl->KeySize();
+	}	
+
+void C3DESEncryptorShim::Transform(TDes8& aBlock)
+	{
+	iOutputBlock.Zero();
+	TRAP_IGNORE(iSymmetricCipherImpl->ProcessL(aBlock, iOutputBlock);)
+	aBlock = iOutputBlock;
+	}
+
+void C3DESEncryptorShim::Reset()
+	{
+	iSymmetricCipherImpl->Reset();
+	}	
+
+TInt C3DESEncryptorShim::Extension_(TUint aExtensionId, TAny*& a0, TAny* /*a1*/)
+	{
+	TInt ret(KErrExtensionNotSupported);
+	
+	if (CryptoSpi::KSymmetricCipherInterface == aExtensionId && iSymmetricCipherImpl)
+		{
+		a0=iSymmetricCipherImpl;
+		ret=KErrNone;	
+		}		
+	return ret;
+	}	
+
+// C3DESDecryptorShim ////////////////////////////////////////////////////////
+C3DESDecryptorShim* C3DESDecryptorShim::NewL(const TDesC8& aKey)
+	{
+	C3DESDecryptorShim* self = C3DESDecryptorShim::NewLC(aKey);
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+
+C3DESDecryptorShim* C3DESDecryptorShim::NewLC(const TDesC8& aKey)
+	{
+	C3DESDecryptorShim* self = new (ELeave) C3DESDecryptorShim();
+	CleanupStack::PushL(self);
+	self->ConstructL(aKey);
+	// DES only used 7 bits out of every key byte
+	TCrypto::IsSymmetricWeakEnoughL(BytesToBits(aKey.Size()) - aKey.Size());
+	return self;
+	}
+
+C3DESDecryptorShim::C3DESDecryptorShim()
+	{	
+	}
+
+C3DESDecryptorShim::~C3DESDecryptorShim()
+	{
+	delete iSymmetricCipherImpl;
+	delete iKey;
+	}
+
+
+void C3DESDecryptorShim::ConstructL(const TDesC8& aKey)
+	{
+	TKeyProperty keyProperty = {K3DesUid, KNullUid, KSymmetricKey, KNonEmbeddedKeyUid};
+	CCryptoParams* keyParam =CCryptoParams::NewLC();
+	keyParam->AddL(aKey, KSymmetricKeyParameterUid);
+	iKey=CKey::NewL(keyProperty, *keyParam);
+	CleanupStack::PopAndDestroy(keyParam);
+	CSymmetricCipherFactory::CreateSymmetricCipherL(
+											iSymmetricCipherImpl,
+											K3DesUid,
+											*iKey,
+											KCryptoModeDecryptUid,
+											KOperationModeECBUid,
+											KPaddingModeNoneUid,
+											NULL);	
+	}	
+
+TInt C3DESDecryptorShim::BlockSize() const
+	{
+	// SPI returns block size in BITS
+	return BitsToBytes(iSymmetricCipherImpl->BlockSize());
+	}
+	
+TInt C3DESDecryptorShim::KeySize() const
+	{
+	return iSymmetricCipherImpl->KeySize();
+	}	
+
+void C3DESDecryptorShim::Transform(TDes8& aBlock)
+	{
+	iOutputBlock.Zero();
+	TRAP_IGNORE(iSymmetricCipherImpl->ProcessL(aBlock, iOutputBlock);)
+	aBlock = iOutputBlock;	
+	}
+
+void C3DESDecryptorShim::Reset()
+	{
+	iSymmetricCipherImpl->Reset();
+	}
+
+TInt C3DESDecryptorShim::Extension_(TUint aExtensionId, TAny*& a0, TAny* /*a1*/)
+	{
+	TInt ret(KErrExtensionNotSupported);
+	
+	if (CryptoSpi::KSymmetricCipherInterface == aExtensionId && iSymmetricCipherImpl)
+		{
+		a0=iSymmetricCipherImpl;
+		ret=KErrNone;	
+		}		
+	return ret;
+	}