一些代理多重签名方案的安全性分析和改进  

Security Analysis and Improvement of Some Proxy Multi-signature Schemes

作　　者：胡小明[1] 张小军[2] 黄上腾[1] 

机构地区：[1]上海交通大学计算机科学与工程系,上海200240 [2]河北科技师范学院,河北秦皇岛066004

出　　处：《小型微型计算机系统》2009年第4期784-787,共4页Journal of Chinese Computer Systems

摘　　要：代理多重签名方案是现代电子商务中重要的一种数字签名,但很多代理多重签名方案是不安全的,存在各种问题.对最近提出的一些代理多重签名方案进行了安全性分析,指出这些方案是不安全的,存在不同程度的安全缺陷.为了弥补这些缺陷,提出一个新的不需要安全信道的代理多重签名方案,并对改进的方案进行了安全性和有效性分析.Proxy multi-signature scheme is an important digital signature of modern electronic business. But many of them are insecure and have some different limitations. Security analysis of some proxy multi-signature schemes proposed reTcently is presented. This paper points out that these schemes are insecure and have different security weaknesses. In order to overcome these weaknesses, a novel proxy multi-signature scheme without a secure channel is proposed, and security and efficiency analysis of the improved scheme is presented.

关 键 词：密码学 代理签名 代理多重签名 密码分析 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]