C++ CHash::Hash方法代码示例

static long Hash(tHashAlgo hashAlgo, const CByteArray & oData)
{
	CHash oHash;
	CByteArray oHashData = oHash.Hash(hashAlgo, oData);

	printf("Hash: %s\n", oHashData.ToString(true, false).c_str());
	WriteFile("", "hash.bin", oHashData);

	return 0;
}

TVerdict CHashIncrementalHashWithCopyStep::doTestStepL()
	{
	if (TestStepResult()==EPass)
		{
		
		//Assume faliure, unless all is successful
		SetTestStepResult(EFail);
		
		INFO_PRINTF1(_L("*** Hash - Incremental Hash with Copy ***"));
		INFO_PRINTF2(_L("HEAP CELLS: %d"), User::CountAllocCells());
		
		TVariantPtrC algorithmUid;
		TVariantPtrC operationModeUid;
		TPtrC sourcePath;
		TPtrC expectedHash;
		
		//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))
			{
			ERR_PRINTF1(_L("** Error: Failed to Load Configuration Parameters **"));
			SetTestStepResult(EFail);
			}
		else
			{
			//Create a pointer for the Hash Implementation Object
			CHash* hashImpl = NULL;
			
			//Retrieve a Hash Factory Object					
			TRAPD(err,CHashFactory::CreateHashL(hashImpl,
												algorithmUid,
												operationModeUid,
												NULL,
												NULL));  				
	
			if(hashImpl && (err == KErrNone))
				{
				
				//Push the Hash Implementation Object onto the Cleanup Stack
				CleanupStack::PushL(hashImpl);
				
				RFs fsSession;
				
				//Create a connection to the file server	
				err = fsSession.Connect();
					
				if(err != KErrNone)
					{
					ERR_PRINTF2(_L("*** Error: File Server Connection - %d ***"), err);
					SetTestStepResult(EFail);
					}	
				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);
						SetTestStepResult(EFail);
						}
					else
						{
						
						TInt sourceLength = 0;
						TInt readPosition = 0;
						TInt readIncrement = 0;
						TBool hashComplete = EFalse;
						TBool hashCopied = EFalse;
						TPtrC8 hashStr;
						
						CHash* hashCopyImpl = 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;
						
						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);
							
							//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 Hash implementation object
//.........这里部分代码省略.........

TVerdict CHmacSetOperationModeCheckingStep::doTestStepL()
	{
	if (TestStepResult()==EPass)
		{
		
		//Assume faliure, unless all is successful
		SetTestStepResult(EFail);
		
		INFO_PRINTF1(_L("*** Hmac - Set Operation Mode Checking ***"));
		INFO_PRINTF2(_L("HEAP CELLS: %d"), User::CountAllocCells());
		
		TVariantPtrC algorithmUid;
		TVariantPtrC operationModeUid;
		TVariantPtrC secondOperationModeUid;
		TPtrC sourcePath;
		TPtrC expectedHash;
		TPtrC expectedHmac;
		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(),KConfigSecondOperationMode,secondOperationModeUid) ||
			!GetStringFromConfig(ConfigSection(),KConfigSourcePath,sourcePath) ||
			!GetStringFromConfig(ConfigSection(),KConfigExHashHmacValue,expectedHash) ||
			!GetStringFromConfig(ConfigSection(),KConfigExSecondHashHmacValue,expectedHmac) ||
			!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* hashHmacImpl = NULL;
				
				//Convert encryption key to an 8 Bit Descriptor
				HBufC8* keyStr = HBufC8::NewLC(encryptKey.Length());
				TPtr8 keyStrPtr = keyStr->Des();
				
				keyStrPtr.Copy(encryptKey);
				
				//Create an new CryptoParams object to encapsulate the invalid key type and key string
				CCryptoParams* keyParams = CCryptoParams::NewL();
				CleanupStack::PushL(keyParams);
				keyParams->AddL(*keyStr,keyType);
				
				//Create a valid CKey Object
				TKeyProperty keyProperty;
				CKey* key = CKey::NewL(keyProperty,*keyParams);
				CleanupStack::PushL(key);
				
				//Construct an initial hash object with NO key, Catching any possible Leaves			
				TRAPD(err,CHashFactory::CreateHashL(
									hashHmacImpl,
									algorithmUid,
									operationModeUid,
									NULL,
									NULL));
									
										
				if(hashHmacImpl && (err == KErrNone))
					{
					
					//Push the Implementation Object onto the Cleanup Stack
					CleanupStack::PushL(hashHmacImpl);
					
					//Create a NULL TCharacteristics pointer
					const TCharacteristics* charsPtrA(NULL);
					
//.........这里部分代码省略.........