超椭圆曲线代理签名方案的安全性分析和改进

摘要

对原有的基于超椭圆曲线的代理数字签名方案进行仔细分析,提出两种伪造攻击,发现原方案不能抵抗两种伪造攻击.对原方案加以改进,提出一个新的代理签名方案,并对其安全性进行分析.新方案能够有效抵抗两种伪造攻击,还具有原方案的所有优点.%After carefully analysing the original proxy digital signature scheme based on hyperelliptic curve, we present two forgery attacks ,' and find that the original signature scheme can not resist these two forgery attacks. A new proxy signature scheme is proposed based on the improvement of the old one, and its security is analysed as well. The new scheme can completely resist two forgery attacks, in addition, it also has all the advantages of the original scheme.