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Analysis of Lattice-Based Access Control Policies using Rewiting Systems and Tom.

In this paper we show how access control policies can be specified using term rewriting systems and present the corresponding implementation realized using the Tom framework. We focus on two well known models (Bell-Lapadula and McLean) and propose an algorithm that detects potential information leakages, i.e. checks that information can be accessed only by authorized users independently of the actions performed in a given system.