Title: RSA-based dynamic public audit service for integrity verification of data storage in cloud computing using Sobol sequence
Authors: P. Syam Kumar; R. Subramanian
Addresses: Department of Computer Science, School of Engineering and Technology, Pondicherry University, Puducherry-605 014, India. ' Department of Computer Science, School of Engineering and Technology, Pondicherry University, Puducherry-605 014, India
Abstract: Cloud storage has become a trend and more practical in recent years. This unique feature of the cloud poses many security challenging design issues. One of the most important security aspects that need to be addressed is that to assure the integrity of clients data stored in the cloud. In this paper, we propose a RSA-based dynamic public audit service for the integrity verification of data using Sobol sequence. Our scheme allows a third party auditor (TPA) on behalf of the clients to verify the integrity of data stored in the cloud and also supports data dynamics at block level while maintaining the same integrity assurance. Our model allows probabilistic proofs of integrity by challenging random blocks from the server which drastically reduces the computation and communication overhead. The security, performance analysis and experimental results show that our scheme is more secure and efficient than existed probability verification schemes.
Keywords: cloud computing; data storage; data integrity; Sobol sequence; RSA assumption; homomorpic verifiable tags; HVTs; public audit services; security; third party auditors.
International Journal of Cloud Computing, 2012 Vol.1 No.2/3, pp.167 - 200
Published online: 16 Aug 2014 *Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article