一种改进的群盲签名方案  

An Improved Group Blind Signature Scheme

作　　者：万仲保[1] 冀淼伟[1] 

机构地区：[1]华东交通大学信息安全研究中心,江西南昌330013

出　　处：《计算机与现代化》2013年第5期99-102,共4页Computer and Modernization

摘　　要：针对经典的LR98群盲签名方案,分析其安全性和效率,通过分析发现由于LR98方案采用了固定值l作为安全参数,导致群公钥和签名的长度与群大小线性相关,因此其计算复杂度、空间复杂度和通信复杂度都与l呈线性关系,原方案的效率很低。本文针对LR98低效率问题,提出选择新的安全参数来提高效率的改进方案。Aiming at the classic LR98 group blind signature scheme, this paper analyses its security and efficiency, then finds that LR98 scheme uses fixed value l as security parameter, this leads to the group public key and signature length having linear relationship with the size of group, so its calculated complex degree, space complex degree and communication complex degree have linear relationship with l, therefore the original scheme efficiency is low. The improved scheme proposed in this paper improves efficiency by selecting new security parameter.

关 键 词：群盲签名 信息安全 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]