摘要
在开放式环境中,信任管理是最常用的一种访问控制方法.但是,目前存在的信任管理系统存在以下不足(1)没有刻画实体之间的信任程度,与现实情况不相符合;(2)委托深度没有得到很好的控制.针对上述问题,提出了一种基于信任度的授权委托模型——TBAD模型(Trustworthiness-BasedAuthorizationDelegationmodel),探讨了TBAD模型的一致性验证算法,并结合具体实例对TBAD模型的使用进行了说明.
Trust management is a common approach on access control in open environment. However, the existing trust management systems have some faults as follows. On the one hand, trustworthiness between entities is not described in these systems. This does not accord with facts. On the other hand, delegation depth is not controlled effectively. To address the problems, this paper proposes a trustworthiness-based authorization delegation model, called TBAD model, and discusses the algorithm of compliance checking in TBAD model, and illuminate the usage of TBAD model through a typical example.
出处
《计算机学报》
EI
CSCD
北大核心
2006年第8期1265-1270,共6页
Chinese Journal of Computers
基金
国家自然科学基金(60403027)
湖南省自然科学基金(04JJ30048)资助.
关键词
TBAD模型
一致性验证
信任度
证书链查找
委托深度
TBAD model
compliance checking
trustworthiness
discovery of credential chain
delegation depth
