%0 Journal Article
%T Improvement of a New Proxy Signature Scheme<br>一种新型的代理签名方案的改进
%A Guo Gang
%A Zeng Guo-ping
%A <br>郭刚
%A 曾国平
%J 电子与信息学报
%D 2008
%I 
%X In this paper, a new anonymous proxy signature scheme proposed by Gu Li-ze et al.(2005) is cryptanalyzed in detail and is proved that this scheme is not secure against the original signer’s forgery attack and then four methods to attack the new scheme are found. To avoid these attacks, the new scheme is revised and two improved schemes are given. Finally, the improved schemes are concluded that they are both secure against the original signer’s forgery attack.
%K Digital signature
%K Proxy signature
%K Anonymity
%K Traceability<br>数字签名
%K 代理签名
%K 匿名性
%K 可追踪性
%K 匿名代理
%K 签名方案
%K 改进
%K Signature
%K Scheme
%K Proxy
%K 缺陷
%K 攻击方法
%K 伪造攻击
%K 名人
%K 抗原
%K 安全
%K 密码分析
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=C642013DDC12105036B309E2D3B870DE&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=CA4FD0336C81A37A&sid=E2E0FBFE4D7EFB94&eid=FBA00558C57D9C11&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=9