Harn签名的部分盲化  

Partial Blindness on Harn Signature

作　　者：禹勇[1] 杨波[1] 杨国庆[1] 张琴[2] 

机构地区：[1]西安电子科技大学ISN国家重点实验室,西安710071 [2]长庆油田公司,西安710021

出　　处：《计算机工程》2007年第15期18-19,45,共3页Computer Engineering

基　　金：国家自然科学基金资助项目(60372046;60573043)

摘　　要：在分析盲签名固有缺点的基础上,引入3个随机参数,完整地解决了Harn签名的部分盲化问题,给出Harn签名的一般性部分盲化方法。通过对参数的不同选取,得到了3个部分盲签名方案并对它们进行效率比较。对提出的方案进行安全性分析,结论是该方案具有完备性、不可伪造性和部分盲性,并且因为使用了Hash函数,所以可以抵抗篡改协定信息攻击。One shortcoming of blind signature is that, since the signer＇s view is completely shut off from the resulting signatures, the signatures may be used in an unintended way. A generalized Ham partial blind signature scheme is proposed by introducing three random parameters. Three partial blind signature schema were obtained by choosing different parameters and the comparison of their efficiency is given. The security analysis of the proposed schemes is given, which shows they have the properties of completeness, unforgeability and partial blindness. And the proposed schema are against changing agreed information attack because of the employment of Hash function.

关 键 词：密码学 数字签名 部分盲签名 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]