Computer Engineering and Applications ›› 2008, Vol. 44 ›› Issue (24): 136-138.DOI: 10.3778/j.issn.1002-8331.2008.24.040

• 网络、通信、安全 • Previous Articles     Next Articles

New membership revocation scheme in FI05 group signature

ZHU Jun-jie,LI Qiao-liang   

  1. School of Computer and Communication,Hunan University,Changsha 410082,China
  • Received:2007-10-30 Revised:2008-01-17 Online:2008-08-21 Published:2008-08-21
  • Contact: ZHU Jun-jie

FI05群签名方案中一种新的成员撤销方案

朱俊杰,李乔良   

  1. 湖南大学 计算机与通信学院,长沙 410082
  • 通讯作者: 朱俊杰

Abstract: A new membership revocation method based on the FI05 group scheme is provided.The new scheme is implemented by a new dynamic accumulator.The security of the accumulator is based on the elliptic-curve discrete logarithm problem,and is proved.The cost of revoking a member and updating witness is smaller than the previous accumulators.The security of the new group signature scheme is proved.

Key words: group signature, dynamic accumulator, membership revocation

摘要: 在FI05群签名的基础上,提出了一个新的成员撤销方案。该方案是利用一个新的动态累加器来实现的。累加器的安全性是基于椭圆曲线离散对数问题,并已被证明。撤销一个成员和更新证据所花费的代价比以前的累加器更小,而且证明了新的群签名的安全性。

关键词: 群签名, 动态累加器, 成员撤销