%0 Journal Article
%T Improved proxy blind signature scheme<br>一个改进的代理盲签名方案
%A HUANG Hui
%A QIN Jing
%A LI Li
%A <br>黄辉
%A 秦静
%A 李丽
%J 计算机应用
%D 2007
%I 
%X In this paper, we analyzed the proxy blind signature scheme proposed by Lal and Awasthi. We pointed out the insecurity of the L-A scheme. It is of the untraceability property. An adversary can republish the proxy public key and claim that he is the original signer. It needs a secure channel in the L-A scheme, and the original signer can forge the blind signature of the proxy signer. Then we proposed a new proxy blind signature scheme to overcome the pointed out drawback in L-A scheme. We proved that the new scheme is more secure and useful. As an instance, application of the new scheme in electronic cash was described.
%K proxy signature
%K blind signature
%K proxy blind signature
%K unlinkability<br>代理签名
%K 盲签名
%K 代理盲签名
%K 不可追踪性
%K 改进
%K 代理签名
%K 盲签名方案
%K signature
%K scheme
%K blind
%K proxy
%K 电子现金
%K 应用
%K 安全性
%K 安全传输
%K 信息
%K 问题
%K 安全缺陷
%K 安全信道
%K 传输信道
%K 代理授权
%K 公钥
%K 发布代理
%K 身份
%K 原始签名者
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=831E194C147C78FAAFCC50BC7ADD1732&aid=14E16CBD27430512983B03840EECAE32&yid=A732AF04DDA03BB3&vid=DB817633AA4F79B9&iid=B31275AF3241DB2D&sid=B08191F41006DCF9&eid=243AE565CB8D493C&journal_id=1001-9081&journal_name=计算机应用&referenced_num=0&reference_num=14