【摘要】 首先引入了代理签名的定义、性质和分类,然后评述了匿名代理签名、代理盲签名和基于椭圆曲线代理签名的研究现状,并分别给出相应的典型代理签名方案及其所受到的攻击,最后总结出目前代理签名方案中存在的问题并做出展望。更多还原

【Abstract】 The definition,property and categories of proxy signature are described at first.Then present research situations of proxy signature with proxy signer privacy protection,proxy blind signature and proxy signature based on elliptic curve are discussed.Some typical proxy signature schemes are given and corresponding attack is made later on.Finally,present existent problems of proxy signature scheme and corresponding analysis are remarked.更多还原