Computer Engineering and Applications ›› 2011, Vol. 47 ›› Issue (10): 78-79.

• 网络、通信、安全 • Previous Articles     Next Articles

Multi-level threshold signature scheme without trusted center

WANG Jiandong,ZOU Hui   

  1. Department of Information Engineering,Shijiazhuang University of Economics,Shijiazhuang 050031,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-04-01 Published:2011-04-01


王建东,邹 惠   

  1. 石家庄经济学院 信息工程系,石家庄 050031

Abstract: In a changeable threshold signature scheme,the large amount of information is provided.A multi-level threshold signature scheme without trusted center is proposed,the scheme is based on the intractability of the discrete algorithm.Using a polynomial which degenerates to a lower order polynomial,the threshold signatures are generated in the multiple level thresholds according to the security level of the message.Analysis results show that the proposed scheme is secure and the less public information is provided.

Key words: threshold signature, multi-level threshold, conspiracy attack, Chinese remainder theorem

摘要: 已有的可变门限签名方案,存在公开信息量大的缺陷。基于离散对数问题的困难性,给出一种无可信中心的多级门限签名方案。该方案利用多项式次数退化的方法,能根据待签名文件的安全性要求,选择不同的门限值,完成门限签名。分析表明,该方案具有安全性高,公开信息量小的特点。

关键词: 门限签名, 多级门限, 合谋攻击, 中国剩余定理