Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2017, Vol. 40 ›› Issue (5): 43-49.doi: 10.13190/j.jbupt.2017-003

• Papers • Previous Articles     Next Articles

Dynamic Group Public Auditing Scheme for Shared Data on Attribute-Based Threshold Signature

ZHA Ya-xing1,2, LUO Shou-shan1,2, LI Wei1,2, BIAN Jian-chao1,2   

  1. 1. Information Security Center, Beijing University of Posts and Telecommunications, Beijing 100876, China;
    2. National Engineering Laboratory of Disaster Backup and Recovery, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2017-01-13 Online:2017-10-28 Published:2017-11-21

Abstract: A privacy-preserving public auditing scheme for dynamic group shared data based on attribute-based threshold signature was proposed, the identity information parameter was introduced into the attribute keys for preventing collusion attacker who wants to forge signature through the combination of these keys. The proposed scheme supports authority revocation of group user and data dynamic operation with attribute-based authorization strategy. Analysis shows that the proposed scheme with the characteristics of unforgeability and resistance collusion attack based on the random oracle model, and with better efficiency and security.

Key words: attribute-based threshold signature, privacy preserving, public auditing, unforgeability

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