Certificateless Provable Group Shared Data Possession with Comprehensive Privacy Preservation for Cloud Storage

Hongbin Yang, Shuxiong Jiang, Wenfeng Shen and Zhou Lei
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Hongbin Yang: School of Computer Engineering and Science, Shanghai University, Shanghai 200444, China
Shuxiong Jiang: School of Computer Engineering and Science, Shanghai University, Shanghai 200444, China
Wenfeng Shen: School of Computer Engineering and Science, Shanghai University, Shanghai 200444, China
Zhou Lei: School of Computer Engineering and Science, Shanghai University, Shanghai 200444, China

Future Internet, 2018, vol. 10, issue 6, 1-17

Abstract: Provable Data Possession (PDP) protocol makes it possible for cloud users to check whether the cloud servers possess their original data without downloading all the data. However, most of the existing PDP schemes are based on either public key infrastructure (PKI) or identity-based cryptography, which will suffer from issues of expensive certificate management or key escrow. In this paper, we propose a new construction of certificateless provable group shared data possession (CL-PGSDP) protocol by making use of certificateless cryptography, which will eliminate the above issues. Meanwhile, by taking advantage of zero-knowledge protocol and randomization method, the proposed CL-PGSDP protocol leaks no information of the stored data and the group user’s identity to the verifiers during the verifying process, which is of the property of comprehensive privacy preservation. In addition, our protocol also supports efficient user revocation from the group. Security analysis and experimental evaluation indicate that our CL-PGSDP protocol provides strong security with desirable efficiency.

Keywords: cloud storage; provable data possession; privacy-preserving; certificateless cryptography (search for similar items in EconPapers)
JEL-codes: O3 (search for similar items in EconPapers)
Date: 2018
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