【摘要】 通过引入消息拥有者的私钥和公钥对Schnorr型盲签名方案进行了改进,构造了一个新的盲签名方案。基于新的盲签名方案构造了一个代理盲签名方案。分析表明新方案不仅同时拥有代理签名和盲签名的特点,具有不可伪造性、可区分性、不可抵赖性、可注销性等性质,而且和Tan等人的方案以及Lal等人的方案相比减少了求幂运算的次数,避免了求逆运算,使签名速度有了较大提高。更多还原

【Abstract】 Firstly, Schnorr blind signature scheme is improved by using public key and private key of message holder. On the basis of this improved scheme, a new blind signature scheme is presented. Then a new proxy blind signature scheme is proposed in accordance with the proposed scheme. This scheme has properties of both proxy signature and blind signature. It also has good properties as unfor- geability , distinguish, non-repudiation and revoking etc. Compared with the schemes of Tan et al’s and Lal et al’s, the new scheme reduces the computational load for exponentiation, avoids the computation for inversion and improves the signing speed.更多还原