摘要
目前的访问控制模型大多是从系统角度出发以保护资源,在权限控制时没有考虑上下文,如RBAC。随着普适计算时代的到来,要求大量设备互连并自由交互,不仅要注意资源的保护还要考虑程序执行的上下文。在以往研究的基础上提出了基于角色和上下文的访问控制(RCBAC)机制,从角色、上下文的角度建模,依据角色以及上下文的不同对权限进行动态管理。RCBAC适合普适计算中设备主动学习,以满足用户的需要,在RCBAC基本概念的基础上,对模型进行了形式化描述。
Nowadays,access control models take a system-centric view of protecting resource,and they don't take the context into account when controlling the permissions,such as RBAC.However,with the arrival of pervasive computing times,it requires thousands of applications to connect and communicate each other,which suggests not only noticing the protection of systematic resources but the context of the programmer.The paper studies the old models and presents a new model:Role & Context-Based Access Control (RCBAC)Model,which models from role & context and dynamically manage the permissions through roles and context.It meets the needs of self-study for pervasive computing environment.Based on the basic concept of RCBAC,a formalization description is given.
出处
《计算机应用研究》
CSCD
北大核心
2004年第12期140-142,共3页
Application Research of Computers
关键词
访问控制
上下文
角色
普适计算
Access Control
Context
Role
Pervasive Computing
