--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cryptoplugins/cryptospiplugins/source/softwarecrypto/rsasignerimpl.cpp	Fri Nov 06 13:21:00 2009 +0200
@@ -0,0 +1,132 @@
+/*
+* 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 "rsasignerimpl.h"
+#include "pluginconfig.h"
+#include "rsafunction.h"
+
+using namespace SoftwareCrypto;
+
+// Implementation of CRSASignerImpl 
+CRSASignerImpl* CRSASignerImpl::NewL(const CKey& aKey, TUid aPaddingMode)
+	{
+	CRSASignerImpl* self = CRSASignerImpl::NewLC(aKey, aPaddingMode);
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+CRSASignerImpl* CRSASignerImpl::NewLC(const CKey& aKey, TUid aPaddingMode)
+	{
+	CRSASignerImpl* self = new(ELeave) CRSASignerImpl(aPaddingMode);
+	CleanupStack::PushL(self);
+	self->ConstructL(aKey);
+	return self;
+	}
+
+CRSASignerImpl::CRSASignerImpl(TUid aPaddingMode) 
+	: iPaddingMode(aPaddingMode)
+	{
+	}
+
+CRSASignerImpl::~CRSASignerImpl()
+	{
+	delete iPadding;
+	}
+
+void CRSASignerImpl::ConstructL(const CKey& aKey)
+	{
+	CSignerImpl::ConstructL(aKey);
+	SetPaddingModeL(iPaddingMode);
+	}
+
+CExtendedCharacteristics* CRSASignerImpl::CreateExtendedCharacteristicsL()
+	{
+	// All Symbian software plug-ins have unlimited concurrency, cannot be reserved
+	// for exclusive use and are not CERTIFIED to be standards compliant.
+	return CExtendedCharacteristics::NewL(KMaxTInt, EFalse);
+	}
+
+const CExtendedCharacteristics* CRSASignerImpl::GetExtendedCharacteristicsL()
+	{
+	return CRSASignerImpl::CreateExtendedCharacteristicsL();
+	}
+
+TUid CRSASignerImpl::ImplementationUid() const
+	{
+	return KCryptoPluginRsaSignerUid;
+	}
+
+void CRSASignerImpl::SetKeyL(const CKey& aPrivateKey) 
+	{
+	DoSetKeyL(aPrivateKey);
+	Reset();
+	}
+
+void CRSASignerImpl::SetPaddingModeL(TUid aPaddingMode)
+	{
+	CPadding* padding(0);
+	switch (aPaddingMode.iUid)
+		{
+		case KPaddingModeNone:
+			padding = CPaddingNone::NewL(GetMaximumOutputLengthL());
+			break;
+		case KPaddingModePkcs1_v1_5_Signature:
+			padding = CPaddingPKCS1Signature::NewL(GetMaximumOutputLengthL());
+			break;
+		default:
+			User::Leave(KErrNotSupported);
+		}
+		
+	delete iPadding;
+	iPadding = padding;
+	iPaddingMode = aPaddingMode;
+	Reset();
+	}
+
+TInt CRSASignerImpl::GetMaximumInputLengthL() const
+	{
+	return GetMaximumOutputLengthL() - iPadding->MinPaddingLength();	
+	}
+
+TInt CRSASignerImpl::GetMaximumOutputLengthL() const
+	{
+	const TInteger& paramN = iKey->GetBigIntL(KRsaKeyParameterNUid);
+	return paramN.ByteCount();	
+	}
+
+void CRSASignerImpl::SignL(const TDesC8& aInput, CCryptoParams& aSignature) 
+	{
+	HBufC8* buf = HBufC8::NewLC(GetMaximumOutputLengthL());
+	TPtr8 ptr = buf->Des();
+	
+	//The following will panic if aInput is larger than MaxOutputLength() It is
+	//likely that the caller has passed in something that has not been hashed.
+	//This is a programming, and likely a security error, in client code, not a
+	//problem here.
+	iPadding->PadL(aInput, ptr);
+
+	RInteger input = RInteger::NewL(ptr);
+	CleanupClosePushL(input);
+	RInteger output;
+
+	RSAFunction::SignL(*iKey, input, output);
+	CleanupClosePushL(output);
+
+	aSignature.AddL(output, KRsaSignatureParameterSUid);
+	CleanupStack::PopAndDestroy(3, buf); //input, buf
+	}