一种前向安全性的可证实代理数字签名方案  

A Certifiable Representative Digital Signature Approach Based on Forward Security

作　　者：梁雨平[1] 汤小华[1] 

机构地区：[1]黄冈师范学院计算机系,湖北黄冈438000

出　　处：《计算机技术与发展》2007年第7期142-144,共3页Computer Technology and Development

基　　金：湖北省教育厅优秀中青年人才项目(2000B47001)

摘　　要：现有的代理数字签名方案都是基于离散对数问题和大数因子分解问题的方案。文中提出的数字签名方案的思想包括签名方案的前向安全性、代理签名的不可抵赖性。该方法是一种基于椭圆曲线离散对数问题的代理签名方案。文中对方案的复杂性和安全性进行了分析,分析结果表明该方法安全可行,同时也扩展了椭圆曲线密码的密码功能。The present representative digital signature approaches are based on discrete logarithm problem and large number factor decomposition. The idea of the digital signature approaeh proposed in this paper includes the forward security and nonrefutation of representative signature. The approach is based on elliptic curve discrete logarithm problem. The paper made an analysis on the complexity and security of the proposed signature approach. The analytical result shows that the approach is safe and feasible, and it extends the cipher function of elliptic curve codes.

关 键 词：数字签名 椭圆曲线 前向安全签名 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]