CAJ | 학술논문

普适计算中开放的动态环境提升了安全和信任管理的挑战，没有信任，普适设备就不能有效地协作，而普适计算也就只能局限于某些特定的领域。传统的集中的安全管理模型不能直接应用于普适计算环境中。现存的用户认证和控制管理同样不再适用。为了克服集中式模型的限制，在普适计算环境中，需要采用分布式的解决方法，对几种分布式的信任模型进行了详细的分析与比较。
보괄계산중개방적동태배경제승료안전화신임관리적도전，몰유신임，보괄설비취불능유효지협작，이보괄계산야취지능국한우모사특정적영역。전통적집중적안전관리모형불능직접응용우보괄계산배경중。현존적용호인증화공제관리동양불재괄용。위료극복집중식모형적한제，재보괄계산배경중，수요채용분포식적해결방법，대궤충분포식적신임모형진행료상세적분석여비교。
Pervasive computing allows a seamless interaction among users, devices, and appli cations anytime and anywhere. Yet portable devices in pervasive computing are mainly powered by batteries and have limited computational and communication capability. The open and dy namic environment in pervasive computing poses challenges in security and trust management. Without trust, pervasive devices cannot cooperate effectively, and the deployment of pervasive computing systems will be restricted to specific application scenarios. The traditional central ized security management schemes are not directly applied in pervasive computing environ ments. Moreover, existing user authentication and access control schemes are inadequate to en sure security in pervasive computing. Distributed solutions can be used in pervasive computing environment to overcome the limitation of centralized schemes. Several kinds of distributed trust management schemes are analyzed and compared in detail.