Solitude Preservative Public Auditing With Access and Permission Control for Confidential Cloud Storage

In this paper, we suggest a privacy-preserving public auditing system for data storage safety in cloud computing. Using cloud storage, users can tenuously store their data and enjoy the on-demand high-quality applications and services from a shared pool of configurable dividing resources, without the burden of local data storage and preservation. However, the fact that users no longer have physical possession of the outsourced data makes the data integrity protection in cloud computing a difficult task, expressly for users with constrained computing possessions. Moreover, users should be able to just use the cloud storage as if it is local, without distressing about the need to verify its reliability. Thus, enabling public auditability for cloud storage is of critical importance so that users can resort to a third-party auditor (TPA) to check the integrity of outsourced data and be worry free. To securely introduce an active TPA, the auditing process should bring in no new vulnerabilities toward user data privacy, and introduce no further online problem to user. In this paper, we propose a secure cloud storage system supporting privacy-preserving public auditing. We further outspread our result to enable the TPA to perform audits for multiple users concurrently and efficiently. General security and performance analysis show the proposed schemes are provably secure and highly well-organized. Our primary experiment conducted on Amazon EC2 instance further demonstrates the fast performance of the design