• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

Computer Engineering & Science ›› 2024, Vol. 46 ›› Issue (03): 453-462.

• Computer Network and Znformation Security • Previous Articles     Next Articles

An identity-encryption multi-cloud multi-copy integrity auditing protocol

ZHANG Feng1,2,3,WEN Bin1,2,3,YAN Yi-fei1,2,3,ZENG Zhao-wu1,2,3,ZHOU Wei1,2,3   

  1. (1.School of Information Science and Technology,Hainan Normal University,Haikou 571158;
    2.Cloud Computing and Big Data Research Center,Hainan Normal University,Haikou 571158;
    3.Key Laboratory of Data Science and Smart Education,
    Ministry of Education(Hainan Normal University),Haikou 571158,China)
  • Received:2023-07-14 Revised:2023-09-05 Accepted:2024-03-25 Online:2024-03-25 Published:2024-03-15

Abstract: To solve the problems of existing provable data possession (PDP) protocols only applicable to single cloud storage servers and over-reliance on public key infrastructure, a new identity-based multi-cloud multi-replica PDP protocol is proposed. This protocol adopts identity encryption to simplify certificate management, and designs a double-layer Merkle hash tree as a new secure data structure to maintain the freshness and consistency of multi-replica. Security analysis and experimental results verify the security and efficiency of this protocol, which can achieve multi-replica integrity auditing on multiple cloud storage servers, and significantly outperform the efficiency of comparison algorithms in the three stages of tag generation, evidence generation, and evidence verification.

Key words: cloud storage, data integrity auditing, multi-cloud servers, multi-copy, identity encryption