基于ECDSA的代理多签名方案

Digital proxy multi-signature scheme based on ECDSA

首先对ECC和ECDSA在安全性和运算速度方面的优越性进行了分析,椭圆曲线数字签名算法非常适用于代理多签名方案。将现有的方案改进后,提出一个改进的基于ECDSA的代理多签名方案,并对新方案做了安全性分析。验证结果表明:改进的方案具有强不可伪造性、强可区分性、抗抵赖性和可控性,并且无需在安全信道下传送,抗攻击性更强。通过更短小的程序代码和封装模块的复用,保证方案适用于微小软/硬件和不安全的外部环境。

The study aimed to analyzethesuperiority of security and speed on ECC and ECDSA,and then ex- plore if thecurve digital signature algorithm could be suitable for proxy multi-signature scheme. After the modification of the existing schemes, an improved proxy multi-signature scheme was proposedbased on ECDSAtoanalyze the security of new scheme. The improved schemes showedstrong unforgeability, high dis- tinguishability,non-repudiation and controllability,as well as avoiding thetransferring in the security chan- nel. By reusing the shorter code and the packaging module, it was found that the solution was more suitable for micro software/hardware and unsafe external environment.