北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 1998, Vol. 21 ›› Issue (2): 76-80.

• 学术论文 • 上一篇    

一种基于单向环同态的多签名体制*

李小杰,杨义先   

  1. 北京邮电大学信息工程系, 北京 100876
  • 收稿日期:1997-04-21 出版日期:1998-03-10
  • 基金资助:
    国家杰出青年基金、 国家教委跨世纪优秀人才专项基金和国家“863计划”资助项目

An Efficient Multisignature Scheme Based on the One-Way#br# Algebraic Homomorphism

Li Xiaojie, Yang Yixian   

  1. Department of Information Engineering, Beijing University of Posts and Telecommunications, Beijing 100876
  • Received:1997-04-21 Online:1998-03-10
  • Supported by:
     

摘要: 指出了E.Chida等设计的多签名体制所存在的缺陷, 即该体制不能抵抗内部攻击, 并在单向环同态的基础上提出了一种改进的多签名体制. 其安全强度不亚于改进的DSA,极大的提高了原有CNOS多签名方案的安全性.

关键词: 密码学, 数字多签名, 单向环同态

Abstract: A weakness in a multisignature scheme designed by E.Chida is pointed out here, this scheme is not strong enough to resist the internal attack. And an improved multisignature scheme based on the one-way algebraic homomorphism is presented and its security level is as same as DSAsignature scheme at least.

Key words: cryptography, digital multisignature, one-way algebraic homomorphism

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