Cloud Data Auditing Using Proofs of Retrievability
This addresses data security concerns for cloud storage users, but appears incremental as it describes existing POR methods rather than introducing new ones.
The paper tackles the problem of ensuring data integrity in cloud storage by proposing proofs of retrievability (POR) to convince clients that their outsourced data remains untampered, without specifying concrete numerical results.
Cloud servers offer data outsourcing facility to their clients. A client outsources her data without having any copy at her end. Therefore, she needs a guarantee that her data are not modified by the server which may be malicious. Data auditing is performed on the outsourced data to resolve this issue. Moreover, the client may want all her data to be stored untampered. In this chapter, we describe proofs of retrievability (POR) that convince the client about the integrity of all her data.