crypto/weakcryptospi/test/tcryptospi/src/symmetric_mac_incremental_re_init_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_re_init_step.h"
#include <cryptospi/cryptomacapi.h>
#include <cryptospi/keys.h>
#include <cryptospi/plugincharacteristics.h>
using namespace CryptoSpi;
CSymmetricMacIncrementalReInitStep::~CSymmetricMacIncrementalReInitStep()
{
}
CSymmetricMacIncrementalReInitStep::CSymmetricMacIncrementalReInitStep()
{
SetTestStepName(KSymmetricMacIncrementalReInitStep);
}
TVerdict CSymmetricMacIncrementalReInitStep::doTestStepPreambleL()
{
return EPass;
}
TVerdict CSymmetricMacIncrementalReInitStep::doTestStepL()
{
//Assume faliure, unless all is successful
SetTestStepResult(EFail);
INFO_PRINTF1(_L("*** Symmetric Mac - Incremental with ReInitialiseAndSetKeyL ***"));
INFO_PRINTF2(_L("HEAP CELLS: %d"), User::CountAllocCells());
TPtrC keyPath;
TPtrC tempKey;
TPtrC sourcePath;
TVariantPtrC algorithm;
if( !GetStringFromConfig(ConfigSection(),KConfigEncryptKeyPath, keyPath) ||
!GetStringFromConfig(ConfigSection(),KConfigEncryptKey, tempKey) ||
!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);
//Convert tempKey to an 8 Bit Descriptor
HBufC8* tempKeyStr = HBufC8::NewLC(tempKey.Length());
TPtr8 tempKeyStrPtr = tempKeyStr->Des();
tempKeyStrPtr.Copy(tempKey);
CCryptoParams* tempKeyParams = CCryptoParams::NewLC();
tempKeyParams->AddL(*tempKeyStr, KSymmetricKeyParameterUid);
CKey* tKey=CKey::NewL(keyProperty,*tempKeyParams);
CleanupStack::PushL(tKey);
//Create a pointer for the Hmac Implementation Object
CMac* macImpl= NULL;
//Retrieve a Mac Factory Object
TRAPD(err,CMacFactory::CreateMacL(macImpl,
algorithm,
*tKey,
NULL));
if (err != KErrNone)
{
CleanupStack::PopAndDestroy(6, keyParams); // keyParams, convertKey, key, tempKeyStr, tempKeyParams, tKey
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;
CleanupClosePushL(fsSession);
//Create a connection to the file server
err = fsSession.Connect();
if (err != KErrNone)
{
ERR_PRINTF2(_L("*** Error: File Server Connection - %d ***"), err);
}
else
{
RFile sourceFile;
CleanupClosePushL(sourceFile);
//Open the specified source file
err = sourceFile.Open(fsSession, sourcePath, EFileRead);
if (err != KErrNone)
{
ERR_PRINTF2(_L("*** Error: Opening Source File - %d ***"), err);
}
else
{
TInt sourceLength = 0;
TInt readPosition = 0;
TInt readIncrement = 0;
TBool macComplete = EFalse;
TBool macReInit = EFalse;
TPtrC8 macStr;
User::LeaveIfError(sourceFile.Size(sourceLength));
//Divide the file size into seperate incremental blocks to read
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::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
macImpl->MacL(*convertSrc);
INFO_PRINTF2(_L("Intial Mac - Bytes Read: %d"), readPosition);
}
else if (readPosition >= sourceLength)
{
//Reading in the final block, constructs the complete hash value and returns it within a TPtrC8
macStr.Set(macImpl->FinalL(*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 re-init
else if ((readPosition >= sourceLength/2) && (macReInit == EFalse))
{
INFO_PRINTF1(_L("ReInit the Mac Object..."));
//ReInit with the right Key to match the expected MAC
macImpl->ReInitialiseAndSetKeyL(*key);
//Sets the read position back to 0 in order to restart the file read from the beginning
readPosition = 0;
macReInit = ETrue;
INFO_PRINTF2(_L("*** MAC REINIT - Bytes Read: %d ***"), readPosition);
}
else
{
//Update the message data within the Mac object with the new block
macImpl->UpdateL(*convertSrc);
INFO_PRINTF2(_L("Mac Update - Bytes Read: %d"), readPosition);
}
CleanupStack::PopAndDestroy(2, sourceData); // sourceData, convertSrc
} while (macComplete == EFalse);
//Create a NULL TCharacteristics pointer
const TCharacteristics* charsPtr(NULL);
//Retrieve the characteristics for the mac implementation object
macImpl->GetCharacteristicsL(charsPtr);
//Static cast the characteristics to type TMacCharacteristics
const TMacCharacteristics* macCharsPtr = static_cast<const TMacCharacteristics*>(charsPtr);
//Create buffer for encrypted data
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 ReInitialiseAndSetKeyL : PASS ***"));
SetTestStepResult(EPass);
}
else
{
ERR_PRINTF1(_L("*** FAIL: Generated Mac and Expected Mac Mismatch ***"));
}
CleanupStack::PopAndDestroy(2, macData); // macData, encryptedFileData
}
//Cleanup the Source RFile
CleanupStack::PopAndDestroy(&sourceFile);
}
CleanupStack::PopAndDestroy(8, keyParams); // keyParams, convertKey, key, tempKeyStr, tempKeyParams, tKey, macImpl, &fsSession
INFO_PRINTF2(_L("HEAP CELLS: %d"), User::CountAllocCells());
return TestStepResult();
}
TVerdict CSymmetricMacIncrementalReInitStep::doTestStepPostambleL()
{
return TestStepResult();
}