网格的访问控制模型

网格要达到资源共享和管理的目的，必须解决资源的访问控制问题。网格的访问控制必须建立在现有的访问控制系统之上，但是网格计算的环境经常跨越多个不同的自治管理域，每个域的访问控制策略和需求可能十分不同．这就使得对网格资源的访问控制更加复杂，现有的访问控制系统必须进行扩展才能移植到网格系统中。文中将讨论三种基于不同方式的网格访问控制模型。每个都有其自身特点，可以根据不同需求来选用。

Grid Access Control Model

In order to achieve the sharing and managing of grid resources,the problem of access control must be settled.This problem is complicated because grid access control is necessary to build on the base of these current access control systems,and a grid-computing environment usually span multiple autonomous administrative domains while the access control policy is very different each other.These current models must be extended to grid.This paper describes three grid access control models based on different current model.Each of them has its own characteristic,so it should be used based on different requirements.