一种改进的前向安全盲签名方案  

A New Forward-Secure Blind Signature Scheme

作　　者：张席[1] 杭欢花[1] 

机构地区：[1]深圳大学计算机与软件学院,广东深圳518060

出　　处：《武汉大学学报（理学版）》2011年第5期434-438,共5页Journal of Wuhan University:Natural Science Edition

基　　金：国家自然科学基金资助项目(60903178)

摘　　要：盲签名具有保护用户隐私的作用,前向安全数字签名可以有效地减少由于密钥泄露所造成的损失.当前大多数前向安全盲签名方案都存在缺陷和难以保障安全性.鉴于此,基于Schnorr算法,提出了一个新的前向安全盲签名方案,并证明了它在随机预言模型下的不可伪造性、盲性和前向安全性,对方案的效率也做了分析.The blind signature plays an important role in protecting the senders＇ privacy,and the forward-secure digital signature can effectively reduce the loss that aroused for the reason of secret keys exposure.At present,some forward-secure blind signature schemes have been proposed,but they are mostly incorrect or insecure.In this paper,based on Schnorr blind signature,we propose a new forward-secure blind signature scheme,and prove that the proposed scheme has strong blindness,forward security and unforgeability in the random oracle model.The efficiency analysis is also discussed.

关 键 词：盲签名 前向安全 不可伪造性 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]