A Survey on Data Integrity Checking in Cloud

Cloud storage which provides efficiency and convenience has been paid more and more attention by not only users but also researchers. Users can save their local costs by outsourcing the data to the cloud. While enjoying the benefits of cloud storage, the users are also worried about whether their data remain intact in the cloud or whether their private information has been leaked. This makes them hesitate to outsource their data and cannot fully trust the cloud servers. Because of the concern of users, data integrity becomes an essential security factor of cloud storage. Many scholars have dedicated themselves to the research of data integrity checking for users' security requirements. In this paper, we survey the latest protocols about data integrity checking in cloud and analyze some important requirements and issues of this kind of protocols. The merits and demerits of the protocols are discussed, and the performance is compared with each other as well.