Abstract
This paper proposes a system to provide security for the grid infrastructure where authorization and authentication will be made scalable by setting up an authorization framework at the resource provider's end. Our proposed architecture intends to relieve the grid middleware from taking the responsibility of the authorization mechanism, as well as improves the resource provider's trust in the event of a request from the data portal, since the authorization policy will be pulled from its own organizational server. We will demonstrate that this architecture is secure, scalable, and robust, by improving the existing authorization mechanism in Grid infrastructures. ©2007 IEEE.