The cloud computing is a latest technology which provides various services through internet. The cloud server allows user to store their data on a cloud without worrying about correctness and integrity of data. Cloud data storage has many advantages over local data storage. User can upload their data on cloud and can access those data anytime anywhere without any additional burden. The user doesn’t have to worry about storage and maintenance of cloud data. But as data is stored at the remote place how users will get the confirmation about stored data.