Synthesis of Non-Interferent Systems

Abstract : In this paper, we focus on distributed systems sub ject to security issues. Such systems are usually composed of two entities: a high level user and a low level user that can both do some actions. The security properties we consider are non-interference properties. A system is non-interferent if the low level user cannot deduce any information by playing its low level actions. Various notions of non-interference have been defined in the literature, and in this paper we focus on two of them: one trace-based property (SNNI) and another bisimulation-based property (BSNNI). For these properties we study the problems of synthesis of a high level user so that the system is non-interferent. We prove that a most permissive high level user can be computed when one exists.
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https://hal.inria.fr/inria-00363029
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Franck Cassez, John Mullins, Olivier Henri Roux. Synthesis of Non-Interferent Systems. 4th Int. Conf. on Mathematical Methods, Models and Architectures for Computer Network Security (MMM-ACNS'07), Sep 2007, Saint Petersburg, Russia. pp.307--321. ⟨inria-00363029⟩

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