%0 Journal Article
%T Further Improvement of a Threshold Proxy Signature Scheme<br>一个门限代理签名方案的进一步改进*
%A XIE Qi
%A YU Xiu-yuan
%A <br>谢琪
%A 于秀源
%J 计算机应用研究
%D 2006
%I 
%X In 1999,Sun,et al presented a threshold proxy signature,which overcame weaknesses of the schemes proposed by Zhang and Kim,et al,respectively.Recently,Li,et al showed that Sun's scheme cann't resist the public key substitution attack,and proposed an improved scheme.However,their improved scheme is still suffer from the public key substitution attack.Additional,a proxy relationship inversion attack on Li's scheme is proposed,it will provides more information in the design of secure proxy signature scheme.Finally,a further improvement scheme is proposed to eliminate the weaknesses.
%K Digital Signature
%K Proxy Signature
%K Threshold Proxy Signature<br>数字签名
%K 代理签名
%K 门限代理签名
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=A9D9BE08CDC44144BE8B5685705D3AED&aid=E9B11001E6BF51F0&yid=37904DC365DD7266&vid=EA389574707BDED3&iid=F3090AE9B60B7ED1&sid=89F76E117E9BDB76&eid=F24949CFDB502409&journal_id=1001-3695&journal_name=计算机应用研究&referenced_num=0&reference_num=13