/*

* Copyright (c) 2007-2010 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: 

* Example CTestStep derived implementation

*

*/

/**

 @file

 @internalTechnology

*/

#include "hmacsetkeycheckingstep.h"

#include <cryptospi/cryptohashapi.h>

#include <cryptospi/keys.h>

#include <cryptospi/plugincharacteristics.h>

using namespace CryptoSpi;

CHmacSetKeyCheckingStep::~CHmacSetKeyCheckingStep()

	{

	}

CHmacSetKeyCheckingStep::CHmacSetKeyCheckingStep()

	{

	SetTestStepName(KHmacSetKeyCheckingStep);

	}

TVerdict CHmacSetKeyCheckingStep::doTestStepPreambleL()

	{

	SetTestStepResult(EPass);

	return TestStepResult();

	}

TVerdict CHmacSetKeyCheckingStep::doTestStepL()

	{

	if (TestStepResult()==EPass)

		{

		//Assume faliure, unless all is successful

		SetTestStepResult(EFail);

		INFO_PRINTF1(_L("*** Hmac - Set Key Checking ***"));

		INFO_PRINTF2(_L("HEAP CELLS: %d"), User::CountAllocCells());

		TVariantPtrC algorithmUid;

		TVariantPtrC operationModeUid;

		TPtrC sourcePath;

		TPtrC expectedHash;

		TPtrC invalidEncryptKey;

		TPtrC encryptKey;

		TVariantPtrC keyType;

		//Extract the Test Case ID parameter from the specified INI file

		if(!GetStringFromConfig(ConfigSection(),KConfigAlgorithmUid,algorithmUid) ||

			!GetStringFromConfig(ConfigSection(),KConfigOperationMode,operationModeUid) ||

			!GetStringFromConfig(ConfigSection(),KConfigSourcePath,sourcePath) ||

			!GetStringFromConfig(ConfigSection(),KConfigExHashHmacValue,expectedHash) ||

			!GetStringFromConfig(ConfigSection(),KConfigInvalidKey,invalidEncryptKey) ||

			!GetStringFromConfig(ConfigSection(),KConfigEncryptKey,encryptKey) ||

			!GetStringFromConfig(ConfigSection(),KConfigEncryptKeyType,keyType))

			{

			ERR_PRINTF1(_L("** Error: Failed to Load Configuration Parameters **"));

			SetTestStepResult(EFail);

			}

		else

			{	

			RFs fsSession;

			//Create a connection to the file server	

			User::LeaveIfError(fsSession.Connect());

			RFile sourceFile;

	    	CleanupClosePushL(sourceFile);

	    	//Open the specified source file		

	    	User::LeaveIfError(sourceFile.Open(fsSession,sourcePath, EFileRead));

			TInt sourceLength = 0;

			User::LeaveIfError(sourceFile.Size(sourceLength));

			//Create a heap based descriptor to store the data

			HBufC8* sourceData = HBufC8::NewL(sourceLength);						

			CleanupStack::PushL(sourceData);

			TPtr8 sourcePtr = sourceData->Des();

			sourceFile.Read(sourcePtr);

			if(sourcePtr.Length() != sourceLength)

				{

				ERR_PRINTF1(_L("*** Error: Reading Source File ***"));

				SetTestStepResult(EFail);	

				}

			else

				{

				//Create a pointer for the Hash + Key (Hmac) Implementation Object

				CHash* hmacImpl = NULL;

				//Convert encryption key to an 8 Bit Descriptor

				HBufC8* invalidKeyStr = HBufC8::NewLC(invalidEncryptKey.Length());

				TPtr8 invalidKeyStrPtr = invalidKeyStr->Des();

				invalidKeyStrPtr.Copy(invalidEncryptKey);

				//Create an new CryptoParams object to encapsulate the invalid key type and key string

				CCryptoParams* invalidKeyParams = CCryptoParams::NewL();

				CleanupStack::PushL(invalidKeyParams);

				invalidKeyParams->AddL(*invalidKeyStr,keyType);

				//Create Invalid Key Object

				TKeyProperty invalidKeyProperty;

				CKey* invalidKey = CKey::NewL(invalidKeyProperty,*invalidKeyParams);

				CleanupStack::PushL(invalidKey);

				//Retrieve a Hmac Factory Object with an Invalid Key			

				TRAPD(err,CHashFactory::CreateHashL(hmacImpl,

													algorithmUid,

													operationModeUid,

													invalidKey,

													NULL));						

				if(hmacImpl && (err == KErrNone))

					{

					//Push the Hmac Implementation Object onto the Cleanup Stack

					CleanupStack::PushL(hmacImpl);

					//Create a NULL TCharacteristics pointer

					const TCharacteristics* invalidCharsPtr(NULL);

					//Retrieve the characteristics for the hash implementation object

					TRAP_LOG(err, hmacImpl->GetCharacteristicsL(invalidCharsPtr));

					//Static cast the characteristics to type THashCharacteristics

					const THashCharacteristics* hashInvalidCharsPtr = static_cast<const THashCharacteristics*>(invalidCharsPtr);

					//The hash output size is returned in Bits, divide by 8 to get the Byte size

					TInt hashSize = hashInvalidCharsPtr->iOutputSize/8;

					//Retrieve the final 8bit hash value and convert to 16bit												

					HBufC* invalidHashData = HBufC::NewLC(hashSize);

					TPtr invalidHashPtr = invalidHashData->Des();

					invalidHashPtr.Copy(hmacImpl->Hash(*sourceData));

					//Take the 16bit descriptor and convert the string to hexadecimal

					TVariantPtrC convertHash;

					convertHash.Set(invalidHashPtr);

					HBufC* invalidHmacResult = convertHash.HexStringLC();							

					INFO_PRINTF2(_L("*** Hashed Data: %S ***"),&*invalidHmacResult);

					INFO_PRINTF2(_L("*** Expected Hash: %S ***"),&expectedHash);

					if(*invalidHmacResult != expectedHash)

						{

						INFO_PRINTF1(_L("*** INVALID KEY - STAGE 1 PASS ***"));

						//Convert encryption key to an 8 Bit Descriptor

						HBufC8* validKeyStr = HBufC8::NewLC(encryptKey.Length());

						TPtr8 validKeyStrPtr = validKeyStr->Des();

						validKeyStrPtr.Copy(encryptKey);

						//Create an new CryptoParams object to encapsulate the valid key type and secret key string

						CCryptoParams* validKeyParams = CCryptoParams::NewL();

						CleanupStack::PushL(validKeyParams);

						validKeyParams->AddL(*validKeyStr,keyType);

						//Create Valid Key Object

						TKeyProperty validKeyProperty;

						CKey* validKey = CKey::NewL(validKeyProperty,*validKeyParams);

						CleanupStack::PushL(validKey);

						//Set the valid key within the Hmac Implementation Object

						TRAP(err,hmacImpl->SetKeyL(*validKey));

						if(err!=KErrNone)

							{

							ERR_PRINTF2(_L("*** ERROR %d: Setting Valid Key ***"),err);

							User::Leave(err);	

							}

						else

							{

							INFO_PRINTF1(_L("*** HMAC VALID KEY SET ***"));	

							}

						//Create a NULL TCharacteristics pointer

						const TCharacteristics* validCharsPtr(NULL);

						//Retrieve the characteristics for the hash implementation object

						TRAP_LOG(err, hmacImpl->GetCharacteristicsL(validCharsPtr));

						//Static cast the characteristics to type THashCharacteristics

						const THashCharacteristics* hashValidCharsPtr = static_cast<const THashCharacteristics*>(validCharsPtr);

						//The hash output size is returned in Bits, divide by 8 to get the Byte size

						hashSize = hashValidCharsPtr->iOutputSize/8;

						//Retrieve the final 8bit hash value and convert to 16bit												

						HBufC* validHashData = HBufC::NewLC(hashSize);

						TPtr validHashPtr = validHashData->Des();

						validHashPtr.Copy(hmacImpl->Hash(*sourceData));

						//Take the 16bit descriptor and convert the string to hexadecimal

						convertHash.Set(validHashPtr);

						HBufC* validHmacResult = convertHash.HexStringLC();							

						INFO_PRINTF2(_L("*** Hashed Data: %S ***"),&*validHmacResult);

						INFO_PRINTF2(_L("*** Expected Hash: %S ***"),&expectedHash);

						if(*validHmacResult == expectedHash)

							{

							INFO_PRINTF1(_L("*** VALID KEY - STAGE 2 PASS ***"));

							INFO_PRINTF1(_L("*** Hmac - Set Key Checking : PASS ***"));

							SetTestStepResult(EPass);

							}

						else

							{

							ERR_PRINTF1(_L("*** STAGE 2 FAIL: Valid Hash and Expected Value Mismatch ***"));

							SetTestStepResult(EFail);	

							}

						CleanupStack::PopAndDestroy(validHmacResult);

						CleanupStack::PopAndDestroy(validHashData);

						CleanupStack::PopAndDestroy(validKey);

						CleanupStack::PopAndDestroy(validKeyParams);

						CleanupStack::PopAndDestroy(validKeyStr);	

						}

					else

						{

						ERR_PRINTF1(_L("*** STAGE 1 FAIL: Invalid Hash and Expected Value Match ***"));

						SetTestStepResult(EFail);	

						}

					CleanupStack::PopAndDestroy(invalidHmacResult);	

					CleanupStack::PopAndDestroy(invalidHashData);

					CleanupStack::PopAndDestroy(hmacImpl);									

					}

				else

					{

					ERR_PRINTF2(_L("*** FAIL: Failed to Create Hmac Object - %d ***"), err);

					SetTestStepResult(EFail);	

					}

				CleanupStack::PopAndDestroy(invalidKey);

				CleanupStack::PopAndDestroy(invalidKeyParams);

				CleanupStack::PopAndDestroy(invalidKeyStr);

				}

			CleanupStack::PopAndDestroy(sourceData);

			//Cleanup the Source RFile	

			CleanupStack::PopAndDestroy();	

			fsSession.Close();	

			}

		INFO_PRINTF2(_L("HEAP CELLS: %d"), User::CountAllocCells());	

		}

	return TestStepResult();

	}

TVerdict CHmacSetKeyCheckingStep::doTestStepPostambleL()

	{

	return TestStepResult();

	}