International Journal of Advanced Research in Computer Science & Technology (IJARCST)
In cloud computing, data is moved to a remotely located cloud server. Cloud server faithfully stores the data and return back to the owner whenever needed. Many users place their data in the cloud and so data integrity is very important issue in cloud storage. After moving the data to the cloud, owner hopes that their data and applications are in secured manner. But that hope may fail sometimes that is the owner's data may be altered or deleted. In this scenario, the user must download the data in order to validate it.