/*

* Copyright (c) 1998-2009 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 "tdsasignfb.h"

#include "t_input.h"

#include "t_output.h"

#include <asymmetric.h>

#include <random.h>

#include <padding.h>

#include <bigint.h>

#include "tbrokenrandom.h"

CTestAction* CDSASignFB::NewL(RFs& aFs, CConsoleBase& aConsole, Output& aOut, 

	const TTestActionSpec& aTestActionSpec)

	{

	CTestAction* self = CDSASignFB::NewLC(aFs, aConsole,

		aOut, aTestActionSpec);

	CleanupStack::Pop();

	return self;

	}

CTestAction* CDSASignFB::NewLC(RFs& aFs, CConsoleBase& aConsole, Output& aOut, 

	const TTestActionSpec& aTestActionSpec)

	{

	CDSASignFB* self = new(ELeave) CDSASignFB(aFs, aConsole, aOut);

	CleanupStack::PushL(self);

	self->ConstructL(aTestActionSpec);

	return self;

	}

CDSASignFB::~CDSASignFB()

	{

	delete iBody;

	delete iSeed;

	}

CDSASignFB::CDSASignFB(RFs& aFs, CConsoleBase& aConsole, Output& aOut)

	: CTestAction(aConsole, aOut), iFs(aFs)

	{

	}

void CDSASignFB::ConstructL(const TTestActionSpec& aTestActionSpec)

	{

	CTestAction::ConstructL(aTestActionSpec);

	iBody = HBufC8::NewL(aTestActionSpec.iActionBody.Length());

	iBody->Des().Copy(aTestActionSpec.iActionBody);

	iSeed = Input::ParseElementHexL(*iBody, _L8("<seed>"));

	iKeyBits = Input::ParseIntElement(*iBody, _L8("<keybits>"), _L8("</keybits>"));

	}

void CDSASignFB::DoPerformPrerequisite(TRequestStatus& aStatus)

	{

	TRequestStatus* status = &aStatus;

	User::RequestComplete(status, KErrNone);

	iActionState = CTestAction::EAction;

	}

void CDSASignFB::DoPerformPostrequisite(TRequestStatus& aStatus)

	{

	TRequestStatus* status = &aStatus;

	iFinished = ETrue;

	User::RequestComplete(status, KErrNone);

	}

void CDSASignFB::DoReportAction(void)

	{

	}

void CDSASignFB::DoCheckResult(TInt)

	{

	if (iResult)

		iConsole.Printf(_L("."));

	else

		iConsole.Printf(_L("X"));

	}

void CDSASignFB::PerformAction(TRequestStatus& aStatus)

	{

	__UHEAP_MARK;

	TRequestStatus* status = &aStatus;

	iResult = EFalse;

	CRandomSetSource* rng = new(ELeave)CRandomSetSource(*iSeed);

	SetThreadRandomLC(rng);

	CDSAKeyPair* dsaPair = CDSAKeyPair::NewLC(iKeyBits);

	CDSASigner* signer = CDSASigner::NewLC(dsaPair->PrivateKey());

	CDSAVerifier* verifier = CDSAVerifier::NewLC(dsaPair->PublicKey());

	TBuf8<128> message(128);

	TRandom::RandomL(message);

	const CDSASignature* signature = signer->SignL(message);

	CleanupStack::PushL(const_cast<CDSASignature*>(signature));

	if(verifier->VerifyL(message, *signature))

		{

		iResult = ETrue;

		}

	else

		{

		iOut.writeString(_L("Failure in dsasignfb with following data:\n"));

		iOut.writeString(_L("input data: "));

		iOut.writeOctetStringL(message);

		iOut.writeString(_L("\n"));

		iOut.writeString(_L("seed: "));

		iOut.writeOctetStringL(*iSeed);

		iOut.writeString(_L("\n"));

		}

	CleanupStack::PopAndDestroy(const_cast<CDSASignature*>(signature));

	CleanupStack::PopAndDestroy(verifier);

	CleanupStack::PopAndDestroy(signer);

	CleanupStack::PopAndDestroy(dsaPair);

	CleanupStack::PopAndDestroy(); //SetThreadRandomLC

	User::RequestComplete(status, KErrNone);

	iActionState = CTestAction::EPostrequisite;

	__UHEAP_MARKEND;

	}

void CDSASignFB::Hex(HBufC8& aString)

    {

    TPtr8 ptr=aString.Des();

    if (aString.Length()%2)

        {

        ptr.SetLength(0);

        return;

        }

    TInt i;

    for (i=0;i<aString.Length();i+=2)

        {

        TUint8 tmp;

        tmp=(TUint8)(aString[i]-(aString[i]>'9'?('A'-10):'0'));

        tmp*=16;

        tmp|=(TUint8)(aString[i+1]-(aString[i+1]>'9'?('A'-10):'0'));

        ptr[i/2]=tmp;

        }

    ptr.SetLength(aString.Length()/2);

    }