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Noninterference with Local Policies

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arxiv 1208.5580 v2 pith:FPOW5BKD submitted 2012-08-28 cs.CR

classification cs.CR
keywords localsecuritydefinitionsdifferentnoninterferencepoliciestheoryalgorithms
verification ladder T0 review T1 audit T2 compute T3 formal
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We develop a theory for state-based noninterference in a setting where different security policies---we call them local policies---apply in different parts of a given system. Our theory comprises appropriate security definitions, characterizations of these definitions, for instance in terms of unwindings, algorithms for analyzing the security of systems with local policies, and corresponding complexity results.

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