摘要： 在定义基于角色的访问控制模型后，给出了基于角色的访问控制在分布式环境下的一种高效实现机制，并对实现中遇到的相关问题进行了较为深入的讨论。为了实现访问控制的灵活性，设计了独立的便于配置的图形用户界面。

关键词: 角色, 基于角色的访问控制, 分布式, 粒度

Abstract: After the role-based access control model is defined, a high efficient implementation of RBAC in a distributed environment is presented. And the correlative issues are discussed deeply such as security, performance, concurrency control, the resources granularity, role hierarchies and constraints and so on. Especially for the flexility of implementing access control, the methods allow the security administrator to manage access control by a GUI (graphical user interfaces) that supports a graphical enterprise model and is easy to deploy.

中图分类号: 

• TP393.08