%0 Journal Article
%T Weaknesses of Some Threshold Group Signature Schemes<br>几个门限群签名方案的弱点
%A WANG Gui-lin
%A QING Si-han
%A <br>王贵林
%A 卿斯汉
%J 软件学报
%D 2000
%I 
%X Threshold group signature is an important kind of signatures, but all of the exi sting threshold group schemes have weaknesses. Several properties are proposed t o define a good threshold group scheme. Then, the weaknesses of three threshold group schemes are analyzed. The most serious weakness is that part of members ca n conspire to get system secret parameters and then forge a valid signature. In the worst situation, the total system is broken.
%K Digital signature
%K group signature
%K threshold group signature
%K cryptography<br>数字签名
%K 群签名
%K 门限群签名
%K 密码学.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=7735F413D429542E610B3D6AC0D5EC59&aid=BD1C024D6D2A97F2&yid=9806D0D4EAA9BED3&vid=708DD6B15D2464E8&iid=F3090AE9B60B7ED1&sid=3EF235AF78C45721&eid=81ED2BA99A995222&journal_id=1000-9825&journal_name=软件学报&referenced_num=53&reference_num=15