摘要： 在普适计算环境中，用户能够在任何时间任何地点访问资源，获得服务。但是这种无处不在性和移动性的环境带来了新的安全问题。资源的拥有者和请求者一般互相不知道。该文给出了主体的信任策略以及基于信任的普适计算环境认证方法和访问控制模型。

关键词: 普适计算；信任策略；认证；访问控制

Abstract: Users can access resources and obtain services anytime anywhere in pervasive computing environment. However, the ubiquitous and mobile environment presents a new security challenge. The owner of resource and requestor do not foreknow each other. Principals trust strategy is presented, and authentication approach and access control model based on trust in pervasive computing environment are addressed

Key words: Pervasive computing; Trust strategy; Authentication; Access control