计算机应用与软件Issue(10)：318-320,333,4.DOI:10.3969/j.issn.1000-386x.2014.10.077
一种基于离散对数的强代理签名方案的分析与改进
ANALYSING A DISCRETE LOGARITHM-BASED STRONG PROXY SIGNATURE SCHEME AND ITS IMPROVEMENT
摘要
Abstract
In this paper we analyse in detail the existing discrete logarithm problem-based strong proxy signature schemes,and find that these schemes have the defects of not being able to resist the public key substitution attack,and we provide the attacking methods as well. Based on the difficulty of discrete logarithm and Schnorr system,we present a new strong proxy signature scheme by improving the signature algorithm.We elaborately analyse the new scheme in its capabilities of resisting the public key substitution attack and limiting the range of proxy signature and the signature time.The new scheme has stronger practicability and security.关键词
代理签名/强代理签名/离散对数/公钥替换Key words
Proxy signature/Strong proxy signature/Discrete logarithm/Public key substitution分类
信息技术与安全科学引用本文复制引用
张兴华..一种基于离散对数的强代理签名方案的分析与改进[J].计算机应用与软件,2014,(10):318-320,333,4.基金项目
河北省高等学校科学技术研究青年基金项目（Q2012020，QN20131047）；廊坊师范学院科学研究项目（LSZQ201303）；廊坊市科学技术研究与发展计划项目（2013011047）。 （）
