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Access and usage control in Grid

Grid is a computational environment where heterogeneous resources are
virtualized and outsourced to multiply users across the Internet.
Efficient and flexible framework for the access and usage control over
Grid resources is a prominent challenge. Our primary objective is to
design the novel authorization framework providing the fine-grained
and continuous usage control of Grid resources.

We tackle the authorization in Grid by usage control (UCON) model,
which presents the continuity of control and mutability of
authorization context. We introduce the policy specification based on
the POLPA language and present the architecture of the state-full
reference monitor. We examine the model expressiveness and
trustworthiness. In order to show the practicality of our framework,
we present a proof-of-concept implementation of our authorization
framework in Globus toolkit.

Università di Pisa
Field: Informatica - INF/01

Graduate student: Aliaksandr Lazouski