crypto/weakcryptospi/test/tcryptospi/src/symmetric_mac_incremental_with_replicate_step.cpp
/*
* Copyright (c) 2008-2010 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 "symmetric_mac_incremental_with_replicate_step.h"
#include <cryptospi/cryptomacapi.h>
#include <cryptospi/keys.h>
#include <cryptospi/plugincharacteristics.h>
using namespace CryptoSpi;
CSymmetricMacIncrementalWithReplicateStep::~CSymmetricMacIncrementalWithReplicateStep()
{
}
CSymmetricMacIncrementalWithReplicateStep::CSymmetricMacIncrementalWithReplicateStep()
{
SetTestStepName(KSymmetricMacIncrementalWithReplicateStep);
}
TVerdict CSymmetricMacIncrementalWithReplicateStep::doTestStepPreambleL()
{
return EPass;
}
TVerdict CSymmetricMacIncrementalWithReplicateStep::doTestStepL()
{
//Assume faliure, unless all is successful
SetTestStepResult(EFail);
INFO_PRINTF1(_L("*** Symmetric Mac - Incremental with Replicate ***"));
INFO_PRINTF2(_L("HEAP CELLS: %d"), User::CountAllocCells());
TPtrC keyPath;
TPtrC sourcePath;
TVariantPtrC algorithm;
if( !GetStringFromConfig(ConfigSection(),KConfigEncryptKeyPath, keyPath) ||
!GetStringFromConfig(ConfigSection(),KConfigAlgorithmUid, algorithm) ||
!GetStringFromConfig(ConfigSection(),KConfigSourcePath, sourcePath))
{
User::Leave(KErrNotFound);
}
// Create key
TKeyProperty keyProperty;
CCryptoParams* keyParams = CCryptoParams::NewLC();
HBufC8* convertKey = ReadInHexPlainTextL(keyPath);
CleanupStack::PushL(convertKey);
keyParams->AddL(*convertKey, KSymmetricKeyParameterUid);
CKey* key=CKey::NewL(keyProperty, *keyParams);
CleanupStack::PushL(key);
//Create a pointer for the Hmac Implementation Object
CMac* macImpl= NULL;
//Retrieve a Mac Factory Object
TRAPD(err,CMacFactory::CreateMacL(macImpl,
algorithm,
*key,
NULL));
if (err != KErrNone)
{
CleanupStack::PopAndDestroy(3, keyParams); // keyParams, convertKey, key
delete macImpl;
ERR_PRINTF2(_L("*** FAIL: Failed to Create Symmetric Mac Object - %d ***"), err);
return EFail;
}
INFO_PRINTF1(_L("Plugin loaded."));
//Push the Mac Implementation Object onto the Cleanup Stack
CleanupStack::PushL(macImpl);
RFs fsSession;
User::LeaveIfError(fsSession.Connect());
CleanupClosePushL(fsSession);
RFile sourceFile;
CleanupClosePushL(sourceFile);
//Open the specified source file
User::LeaveIfError(sourceFile.Open(fsSession,sourcePath, EFileRead));
TInt sourceLength = 0;
TInt readPosition = 0;
TInt readIncrement = 0;
TBool macComplete = EFalse;
TBool macReplicated = EFalse;
TPtrC8 macStr;
CMac* macReplicateImpl = NULL;
User::LeaveIfError(sourceFile.Size(sourceLength));
//Divide the total size of the source file up into individual equal sized blocks to read
//over several increments
readIncrement = sourceLength/KDataReadBlocks;
if (readIncrement == 0)
{
ERR_PRINTF2(_L("*** Error: Source File must be larger than %d bytes ***"), KDataReadBlocks);
User::LeaveIfError(KErrNotSupported);
}
do
{
//Create a heap based descriptor to store the data
HBufC8* sourceData = HBufC8::NewL(readIncrement);
CleanupStack::PushL(sourceData);
TPtr8 sourcePtr = sourceData->Des();
//Read in a block of data from the source file from the current position
err = sourceFile.Read(readPosition,sourcePtr,readIncrement);
HBufC8* convertSrc = ConvertFromHexFormatToRawL(*sourceData);
CleanupStack::PopAndDestroy(sourceData);
CleanupStack::PushL(convertSrc);
//Update the read position by adding the number of bytes read
readPosition += readIncrement;
if(readPosition == readIncrement)
{
//Read in the first block from the data file into the Mac implementation object
if(macReplicated == EFalse)
{
macImpl->MacL(*convertSrc);
INFO_PRINTF2(_L("Intial Mac - Bytes Read: %d"), readPosition);
}
else
{
macReplicateImpl->MacL(*convertSrc);
INFO_PRINTF2(_L("Intial Mac (Replicate) - Bytes Read: %d"), readPosition);
}
CleanupStack::PopAndDestroy(convertSrc);
}
else if(readPosition >= sourceLength)
{
//Reading in the final block, constructs the complete hash value and returns it within a TPtrC8
macStr.Set(macReplicateImpl->FinalL(*convertSrc));
CleanupStack::PopAndDestroy(convertSrc);
//Sets the Complete Flag to ETrue in order to drop out of the loop
macComplete = ETrue;
TInt totalRead = (readPosition - readIncrement) + (*sourceData).Length();
INFO_PRINTF2(_L("Final Mac - Bytes Read: %d"),totalRead);
}
//If the read position is half the source length and the implementation
//object hasn't already been replicated
else if((readPosition >= sourceLength/2) && (macReplicated == EFalse))
{
INFO_PRINTF1(_L("Replicating Mac Object..."));
macImpl->UpdateL(*convertSrc);
CleanupStack::PopAndDestroy(convertSrc);
//Create a Copy of the existing Mac Object with NO internal message state
macReplicateImpl = macImpl->ReplicateL();
macReplicated = ETrue;
//Sets the read position back to 0 inorder to restart the file read from the beginning
readPosition =0;
CleanupStack::PushL(macReplicateImpl);
INFO_PRINTF2(_L("*** Mac REPLICATE - Bytes Read: %d ***"), readPosition);
}
else
{
//Update the message data within the Mac object with the new block
if(macReplicated == EFalse)
{
macImpl->UpdateL(*convertSrc);
INFO_PRINTF2(_L("Mac Update - Bytes Read: %d"), readPosition);
}
else
{
macReplicateImpl->UpdateL(*convertSrc);
INFO_PRINTF2(_L("Mac Update (Replicate) - Bytes Read: %d"), readPosition);
}
CleanupStack::PopAndDestroy(convertSrc);
}
}while(macComplete == EFalse);
//Create a NULL TCharacteristics pointer
const TCharacteristics* charsPtr(NULL);
//Retrieve the characteristics for the mac implementation object
TRAP_LOG(err, macImpl->GetCharacteristicsL(charsPtr));
//Static cast the characteristics to type TMacCharacteristics
const TMacCharacteristics* macCharsPtr = static_cast<const TMacCharacteristics*>(charsPtr);
//The mac output size is returned in Bits, divide by 8 to get the Byte size
TInt macSize = macCharsPtr->iCipherAlgorithmChar->iBlockSize/8;
HBufC8* macData = HBufC8::NewLC(macSize);
TPtr8 macPtr = macData->Des();
macPtr.Copy(macStr);
//Check that expected data equals the encrypted data
HBufC8* encryptedFileData = ReadInHexCiphertextL();
CleanupStack::PushL(encryptedFileData);
if( !macPtr.Compare(TPtrC8(*encryptedFileData)))
{
INFO_PRINTF1(_L("*** Mac - Incremental with Replicate : PASS ***"));
SetTestStepResult(EPass);
}
else
{
ERR_PRINTF2(_L("*** FAIL: Mac Mismatch ***"), err);
}
CleanupStack::PopAndDestroy(9, keyParams); // keyParams, convertKey, key, macImpl, &fsSession, &sourceFile, macReplicateImpl, macData, encryptedFileData
INFO_PRINTF2(_L("HEAP CELLS: %d"), User::CountAllocCells());
return TestStepResult();
}
TVerdict CSymmetricMacIncrementalWithReplicateStep::doTestStepPostambleL()
{
return TestStepResult();
}