Abstract:

By using cloud storage, users can remotely store their data and access high-class apps and services from a pool of configurable computing resources without having to worry about maintaining and managing local data storage. In order for consumers to engage a third party auditor (TPA) to guarantee the integrity of outsourced data and feel at ease, it is crucial to make public auditing of cloud storage possible. The auditing procedure should not create any new online burdens for users or vulnerabilities affecting user data privacy in order to launch a TPA properly and effectively. In this paper, we propose a secure cloud storage system supporting privacy-preserving public auditing. We further extend our result to enable the TPA to perform audits for multiple users simultaneously and efficiently. Extensive security and performance analysis show the proposed schemes are provably secure and highly efficient. Our preliminary experiment conducted on Amazon EC2 instance further demonstrates the fast performance of the design.

Description:

Cloud Computing, Cloud Storage, Privacy, Privacy-Preserving