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中国科学院大学学报 ›› 2006, Vol. 23 ›› Issue (2): 145-148.DOI: 10.7523/j.issn.2095-6134.2006.2.005

• 论文 •    下一篇

一个盲代理签名方案的安全性分析

曹正军; 刘木兰   

  1. 北京中关村东路55 号中科院系统所,100080, 1E-mail: zjcao@amss.ac.cn
  • 收稿日期:1900-01-01 修回日期:1900-01-01 发布日期:2006-03-15

Cryptanalysis of a Blind Proxy Signature Scheme

CAO Zheng-Jun, LIU Mu-Lan   

  1. Key Lab of Mathematics Mechanization, Institute of System Science,
    Academy of Mathematics and Systems Science, Chinese Academy of Sciences,
    Beijing,P.R. China. 100080.
  • Received:1900-01-01 Revised:1900-01-01 Published:2006-03-15

摘要: 证明了文[1]提出的盲代理签名方案是不安全的. 管理中心无法确认代理签名人的身份,而且管理中心和原始签名人合谋后可以任意产生有效的代理签名并利用身份确认方程把它强加给任一代理人.

关键词: 盲代理签名, 群签名

Abstract: The blind proxy signature scheme proposed in [1] is insecure. Managing center C cannot reveal the identity of the actual proxy signer of a given proxy signature. Besides,C and the original signer A can conspire to generate valid proxy signatures and impose them on an arbitrary proxy signer by using the identifying equation.

Key words: blind proxy signature, group signature.

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