Abstract: There exists the dynamic assignment problem between roles and access permissions in the process of collaborative design, which is caused by the dynamics of task execution. On account of this problem, it introduces task association in collaborative design access control, proposes a dynamic access control model based on task and role——TRBAC, and gives formal description of it. It discusses the collaborative design access control and designs the authorization and control algorithm. It takes the CAM group collaborative design for example, through the introduction of TRBAC to achieve the dynamic access control.

Key words: collaborative design, access control, task and role-based access control model, CAM group

摘要： 针对协同设计过程中由于任务执行的动态性承担任务的角色与权限之间的动态分配问题，在协同设计访问控制中引入任务关联，提出一种基于任务/角色的动态访问控制模型TRBAC，给出TRBAC的形式化描述。论述基于TRBAC的协同设计动态访问过程，设计其访问授权及控制算法。以凸轮组协同设计为例，通过引入TRBAC模型，实现其动态访问控制。

关键词: 协同设计, 访问控制, 任务/角色访问控制模型, 凸轮组

CLC Number: 

• TP309.2