基于椭圆曲线的代理盲签名方案

Proxy blind signature scheme based on elliptic curve

利用多元线性变换来说明签名协议过程中各种变量之间的转化关系,提出了一种基于椭圆曲线的代理盲签名方案.作为特例,列举了4种ElGamal型签名相应的代理盲签名方案,并对所提出方案的安全性进行了分析.分析结果表明,通过选取不同的参数组合,可以得到不同的方案,从而使得代理盲签名方案具有较大的选择空间,可广泛应用于有匿名性要求的领域.

Using the multi-linear transform formula to describe the conversion between various variables of the proxy signer and the message owner in signature protocol, a new proxy blind signature scheme based on an elliptic curve cryptosystem was proposed. As special examples, four proxy blind signature schemes based on ElGamal signature were listed, and the security of the proposed schemes was analyzed in details. By selection of different parameter sets of signature equation, different proxy blind signature schemes can be obtained, providing a wide range of parameter space to be selected. The proposed schemes can be applied to the field in which the anonymity is needed.