Abstract:

On the basis of the authorization framework of Globus Toolkits 4, this paper presents an access control mechanism based on XACML and RBAC. It implements an extensible, cross-platform and fine-grained global access control in a dynamic, heterogeneous enterprise information grid system.

Key words: grid, Globus Toolkits 4 （GT4）, RBAC, XACML, access control