Privacy-preserving public auditing for secure cloud storage

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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  • Cong Wang
  • Sherman S.M. Chow
  • Qian Wang
  • Kui Ren
  • Wenjing Lou

Related Research Unit(s)


Original languageEnglish
Article number6109245
Pages (from-to)362-375
Journal / PublicationIEEE Transactions on Computers
Issue number2
Online published15 Dec 2011
Publication statusPublished - Feb 2013


Using cloud storage, users can remotely store their data and enjoy the on-demand high-quality applications and services from a shared pool of configurable computing resources, without the burden of local data storage and maintenance. However, the fact that users no longer have physical possession of the outsourced data makes the data integrity protection in cloud computing a formidable task, especially for users with constrained computing resources. Moreover, users should be able to just use the cloud storage as if it is local, without worrying about the need to verify its integrity. 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 effective TPA, the auditing process should bring in no new vulnerabilities toward user data privacy, and introduce no additional online burden to user. 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. © 1968-2012 IEEE.

Research Area(s)

  • batch verification, cloud computing, Data storage, delegation, privacy preserving, public auditability, zero knowledge

Citation Format(s)

Privacy-preserving public auditing for secure cloud storage. / Wang, Cong; Chow, Sherman S.M.; Wang, Qian; Ren, Kui; Lou, Wenjing.

In: IEEE Transactions on Computers, Vol. 62, No. 2, 6109245, 02.2013, p. 362-375.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review