%0 Journal Article
%T Research on Multi-level Authorization Mechanism for Virtual Organization in Grid Computing System<br>网格计算中面向虚拟组织的多级授权机制研究
%A ZHAO Xi-Bin
%A GUO Zhi
%A YONG Jian-Ping
%A GU Ming
%A <br>赵曦滨
%A 郭陟
%A 雍建平
%A 顾明
%J 计算机科学
%D 2005
%I 
%X It is a challenging work to implement authorization service for Virtual Organization in Grid Computing Sys- tem because of the dynamic and distributed nature of Virtual Organication. After analyzing the requirement of autho- rization service and the existing mechanisms for implementing authorization services in Grid Computing Systems, the paper proposes an efficient multi-level architecture named MLA for implementing authorization in Grid Computing Systems. With the use of threshold closure mechanism, the proposed architecture has the scalability and the strong power to express authorization policy, hence can provide flexible and efficient approach to implement authorization service in GCS.
%K Virtual organization
%K Authorization
%K Secret sharing
%K Threshold closure
%K Scalability<br>虚拟组织
%K 授权
%K 秘密共享
%K 门限闭包
%K 可扩展性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=0819962FD492EC61&yid=2DD7160C83D0ACED&vid=9971A5E270697F23&iid=E158A972A605785F&sid=28F8B56DB6BEE30E&eid=7C72DBC13F2D71EC&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=13