On usage control in data GRIDs

This paper reasons on usage control in Data Grids. We adapt the UCON abc usage control framework for the case of distributed systems with multiple authoritative points. We call it the distributed usage control model. Then, we present an architecture implementing such model. In doing so, we use the functional components of the current Grids. Finally, we show a simple way for controlling the policy granularity using Semantic Grid technologies for the specification of policy subjects and objects.