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。

关键词: 密码学, 数字签名, 部分盲签名

Abstract: 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 Harn 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.

Key words: cryptography, digital signature, partial blind signature

中图分类号: 

• TP309