Netinfo Security ›› 2018, Vol. 18 ›› Issue (8): 50-55.doi: 10.3969/j.issn.1671-1122.2018.08.007

• Orginal Article • Previous Articles     Next Articles

Algebraic Signature-based Secure Auditing and Deduplication Scheme with Ownership Dynamic Modification in Cloud Environment

Jianli BAI1, Xiaoran LI1, Rong HAO1(), Jia YU1,2,3   

  1. 1. College of Computer Science and Technology, Qingdao University, Qingdao Shandong 266071, China
    2. State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences, Beijing 100093, China
    3. School of Computer and Software, Nanjing University of Information Science & Technology, Nanjing Jiangsu 210044, China;
  • Received:2018-04-24 Online:2018-08-20 Published:2020-05-11

Abstract:

Cloud data integrity auditing and data deduplication technology play the important roles in the rapid development of cloud storage. In recent years, many experts have proposed several schemes that simultaneously support data integrity auditing and data deduplication in cloud environment. However, all of these schemes have large computational costs in the phase of authenticator generation. The scheme in this paper uses algebraic signature to generate file signature and utilizes XOR operation to encrypt outsourced data, which greatly reduces computational costs in user side. In addition, the scheme uses the efficient re-encryption algorithm to support the real dynamic ownership modification without knowing all possible users of the file. Security analysis and performance analysis show that the scheme is secure and high efficient.

Key words: integrity auditing, data deduplication, algebraic signature, re-encryption

CLC Number: