%0 Journal Article
%T TTP Roles in Electronic Commerce Protocols<br>电子商务协议中的可信第三方角色
%A QING Si-Han
%A <br>卿斯汉
%J 软件学报
%D 2003
%I 
%X TTP (trusted third party) plays an important role in electronic commerce protocols. Different roles of TTP in inline TTP protocols, online TTP protocols and offline TTP protocols are pointed out through three protocols of different types, i.e., Coffey-Saidha protocol, CMP1 protocol and Asoken-Shoup-Waidner protocol. The above protocols are analyzed thoroughly, and their characteristics, defects and approaches to further improvement are discussed respectively in this paper.
%K TTP(trusted third party)
%K electronic commerce protocol
%K non-repudiation
%K accountability
%K fairness<br>可信第三方
%K 电子商务协议
%K 非否认性
%K 可追究性
%K 公平性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=7735F413D429542E610B3D6AC0D5EC59&aid=2C9F8693BAF6B49D&yid=D43C4A19B2EE3C0A&vid=F3583C8E78166B9E&iid=708DD6B15D2464E8&sid=9C05DE753E92F503&eid=EC723E620E8F619D&journal_id=1000-9825&journal_name=软件学报&referenced_num=27&reference_num=16