一种结构化的普适计算动态信任模型  

Structured Dynamic Trust Model for Ubiquitous Computing

作　　者：郭亚军[1] 何炎祥[1] 严慧芳[2] 

机构地区：[1]武汉大学计算机学院,武汉430073 [2]华中师范大学计算机科学系,武汉430079

出　　处：《武汉理工大学学报（交通科学与工程版）》2007年第5期886-889,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：中国博士后基金项目(批准号:20070410953);湖北省自然科学基金项目(批准号:2005ABA243)资助

摘　　要：安全服务都是基于系统是可信任的这一假设.在普适计算环境中,实体之间不存在事先的信任关系,要确保普适计算的安全,实体之间必须建立信任关系.提出了一种结构化的动态信任模型.该模型将信任分解为基本信任和动态信任.基本信任由实体具有的属性或者第三方的推荐或者经验决定;动态信任则由应用上下文决定.这种结构化的信任模型与现有的信任模型相比具有一些优点,如充分体现了信任的动态性,解决了陌生主体之间如何建立最初的信任关系,并且该模型具有很好的可操作性.All security services are based on the premise that systems are trustworthy. There isn＇t an aforehand trust relationship among entities in ubiquitous computing environment. To secure ubiquitous computing application, trust relationship must be established in entities. In this paper, a structured dynamic trust model for ubiquitous computing is presented. Trust in this model is composed of basic trust and dynamic trust. Basic trust depends on the attributes of an entity, or recommendation of the third party, or experience, while dynamic trust relies on application context. This structured trust model shows better performances than those of current trust models. It can explain well the dynamic characteristic of trust and the initial trust relationship between strangers. The application of this trust model shows that it has good operability.

关 键 词：普适计算 信任模型 访问控制 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]