摘要： 环签名是一种没有可信中心和群建立过程的特殊群签名，对验证者而言其签名者是匿名的，它隐含的某个参数按一定规则组成环状。现有可关联的环签名框架具有弱匿名性和强可关联性，针对该问题提出采用随机数作为可关联标签、具有强匿名性和弱可关联性的环签名框架，给出应用该框架构造选择性关联环签名、可自由验证环签名和高效推断环签名的方法。

关键词: 环签名, 匿名性, 可关联性

Abstract: Ring signature is a special group signature without credible center and group establishing process, whose signer is anonymous. A parameter implicated in ring signature constructs a ring according to certainty rules. Existing ring signature frameworks provide weak anonymity and strong linkability. Aiming at this problem, this paper presents a ring signature framework which uses random number as linkable label, and provides strong anonymity and weak linkability. The method of using this framework to construct selectively linkable ring signature, verifiable ring signature and efficient deductible ring signature is proposed.

Key words: ring signature, anonymity, linkability

中图分类号: 

• TP309