一个新的基于离散对数问题的多重代理多重签名方案  

A NEW MULTI-PROXY MULTI-SIGNATURE SCHEME BASED ON DISCRETE LOGARITHM PROBLEM

作　　者：张兴华[1] 

机构地区：[1]廊坊师范学院数学与信息科学学院,河北廊坊065000

出　　处：《计算机应用与软件》2014年第2期317-320,共4页Computer Applications and Software

基　　金：河北省高等学校科学技术研究青年基金项目(Q2012020;QN20131047);河北省自然科学青年基金项目(A2011408006)

摘　　要：详细分析几个基于离散对数问题的多重代理多重签名方案,这些方案存在的缺陷和不足都已指出,并给出攻击方法。基于代理签名和多重签名,通过签名算法的改进,给出一种新的多重代理多重签名方案,并着重分析方案的正确性和安全性。在该方案中,可以避免滥用代理签名权,抵抗公钥替换攻击,满足不可伪造性,不可否认性,不可追踪性等特性。新方案在安全性方面有着较强的优势。In this paper,we elaborately analyse the discrete logarithm problem-based multi-proxy multi-signature schemes,and point out all the defects and insufficiencies of them,then present the attack approaches.Based on the proxy signature and multi-signature,we present a new multi-proxy multi-signature scheme through improving the signature algorithm,and focus on analysing the correctness and safety of the scheme.In it the abuse of proxy signature rights can be avoid,and the public-key substitute attack can be resisted.It satisfies the features of unforgeability,undeniability,and untraceability etc.The new scheme has a strong advantage in terms of safety.

关 键 词：多重签名 代理签名 多重代理多重签名 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]