两类ElGamal型多重数字签名方案及其安全性分析

Two Kinds of ELGamal Type Digital Multisignature Schemes and Analysis of Their Security

通过分析文献中卢建朱等人提出的ElGamal型多重数字签名方案,指出他们所设计的有序多重数字签名方案中验证方程的一些错误,并对其进行了改正.同时,根据他们设计的方案,作者重新设计了两种多重数字签名方案,新方案有比原方案更好的特性.不仅安全性能好,而且实用性强.

This paper analyzes the Elamal type digital multisignature schemes put forward by Jianzhu Lu et al. in literatures, points out some errors in the paper and revises them. At the same time, according to their schemes, the paper designs two kinds of ElGamal type Digital Multisignature Schemes. The new scheme is good in security and the practical value is high.