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07 February 2025
 
  » arxiv » 1605.0474

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Nondeterministic Multi-Domain Noninterference via Policy Reduction
Oliver Woizekowski ; Ron van der Meyden ;
Date 2 May 2016
AbstractThe literature on information flow security in asynchronous non-deterministic systems with respect to transitive policies has been concentrated largely on the case of policies with two security domains, High and Low, because of a presumption that more general policies can be reduced to this two-domain case. The details of the reduction are rarely given, however. One exception is a proposal by Ryan [FOSAD 2000] based on a partitioning of domains into those above and those not above a given domain in the information flow order. The paper argues that there are other possible reductions, and considers the properties and relationships of several candidate reductions to the two-domain case, when the definition of security in the two-domain case is either Nondeducibility on Inputs or Generalized Noninterference. While Ryan’s proposal works well in the case of Generalized Noninterference, it is shown to have an undesirable property in the case of Nondeducibility on Inputs, and a better candidate reduction is identified for this case.
Source arXiv, 1605.0474
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