基于信任的普适计算的动态授权模型  

Trust-based dynamic authorization model for pervasive computing

作　　者：郭亚军[1] 王亮[1] 洪帆[2] 韩兰胜[2] 

机构地区：[1]华中师范大学计算机科学系,湖北武汉430079 [2]华中科技大学计算机科学与技术学院,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2007年第8期70-73,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(60403027);湖北省自然科学基金资助项目(2005ABA243)

摘　　要：提出了一种联合结构的动态信任模型.在信任模型基础上,扩展了基于角色的访问控制模型.在信任模型中,将信任表示为能够体现信息空间和物理空间的特点的基本信任和动态信任的联合结构.基本信任决定对陌生实体的认证;认证完成后,根据基本信任值,用户被分配一组角色,动态信任决定角色和许可的激活,不同的动态信任值激活不同的角色和许可,因而用户的访问权限也随之变化.When the authorization is considered in pervasive computing, the characteristics of cyberspace and physical spaces are also considered. A combination structural dynamic trust model is proposed. The role based access control model was extended based on it. Trust model in which trust includes basic trust and dynamic trust can inflect the characteristics of cyberspace and physical space. The basic trust decides the authentication to strangers. After authentication, users are arranged for a set of roles based on basic trust. Roles activation and permissions activation depend on dynamic trust. Different dynamic trust value will activate different roles and permissions. Therefore users ＇ access rights are changeful with it.

关 键 词：普适计算 信任模型 授权 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]