基于椭圆曲线的盲数字签名及其身份识别

椭圆曲线密码体制以其特有的优越性被广泛用于进行数据加密和构建数字签名方案。同样,它也可以用来构建盲数字签名方案。介绍了椭圆曲线密码体制的相关知识,基于求解椭圆曲线离散对数问题的困难性,设计了一种基于椭圆曲线离散对数问题的盲数字签名方案,并在此基础上设计了一种身份识别协议,该方案可以同时满足盲数字签名的正确性、匿名性、不可伪造性和不可追踪性等特性要求。从理论上分析该方案是安全的,并具有一定的实用价值。

A Blind Digital Signature Scheme and User Authentication Based on Elliptic Curves Cryptosystem

The elliptic curve cryptosystem is far and wide used to encrypt information and construct digital signature scheme by its speciality.Also it can be used to construct blind digital signature scheme.Introduces the knowledge about elliptic curves cryptosystem.On the difficulty of calculating ECDLP,a new blind digital signature scheme based on elliptic curves cryptosystem is designed,and a user authentication scheme based on the blind digital signature is presented.This scheme can meet correctness,unfalsification and untracing of the blind digital signature scheme.The scheme is secure in theory and is suitable for some practice.