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In [1], we proposed a formal approach to specify authorization policies and their transformations. In this paper, we discuss the implementation issues of this approach and analyse the complexities of the algorithms introduced.
In this paper, we propose a logic based approach to specify and to reason about transformation of authorization policies. The authorization policy is specified using a policy base which comprises a finite set of facts and access constraints. We define the structure of the policy transformation and employ a model-based semantics to perform the transformation under the principle of minimal change. Furthermore,...
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