Abstract
Future Internet Groups have been studying networking virtualization and computing virtualization for Testbed. Specially, GENI have adopted cloud computing as computing virtualization technique. But the traditional access control models are closed and inflexible in cloud computing environment. The integration of Attribute Based Access Control (ABAC) model, which makes decisions relying on attributes of requestors, services, resources, and environment, is scalable and flexible and thus is more suitable for distributed, open systems, such as Cloud computing system. This paper presents an Attribute Based Access Control model and the authorization requirements of Cloud computing systems.
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