一种安全高效的群签名方案  

A SECURE AND EFFICIENT GROUP SIGNATURE SCHEME

作　　者：欧海文[1] 雷亚超 王湘南 Ou Haiwen;Lei Yachao;Wang Xiangnan(Beijing Electronics Science and Technology Institute,Beijing 100070,China;School of Telecommunications Engineering,Xidian University,Xi’an 710071,Shaanxi,China)

机构地区：[1]北京电子科技学院,北京100070 [2]西安电子科技大学通信工程学院,陕西西安710071

出　　处：《计算机应用与软件》2020年第7期309-312,328,共5页Computer Applications and Software

摘　　要：通过对一些基于椭圆曲线的具有前向安全性群签名的研究与分析,提出一种具有前向和后向安全性的高效群签名方案。通过添加随机数的方式打破了公钥状态列表中公钥和私钥的直接联系,规避了被撤销成员联合得出其他成员私钥的风险;设计一个群成员私钥随时间段跨越而自然更新的方案(群管理员的私钥也因应改变),避免以往群成员发生私钥泄漏后需要重新选取密钥对才能保证后续签名安全性的繁琐过程。Through the research and analysis of some forward secure group signatures based on elliptic curve,we propose an efficient group signature scheme with forward and backward security.We broke the direct connection between public key and private key in public key status list by adding a random number,and avoided the risk that the revoked members could jointly obtain the private keys of other members.A scheme was designed to update the private key of group members naturally over time(the private keys of group administrator should be changed accordingly),which avoided the tedious process of re-selecting key pairs to ensure the security of subsequent signatures after the private key leakage of group members.

关 键 词：群签名 前向安全性 后向安全性 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]