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J. Dubreil, T. Jéron, H. Marchand. Monitoring Information flow by Diagnosis Techniques. Research Report IRISA, No 1901, August 2008.

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In this paper, we are interested in constructing monitors for the detection of confidential information flow in the context of partially observable discrete event systems. We focus on the case where the secret information is given as a regular language. We first characterize the set of observations allowing an attacker to infer the secret behaviors. We consider the general case where the attacker and the administrator have different partial views of the system. Further, based on the diagnosis of discrete event systems, we provide necessary and sufficient conditions under which detection and prediction of secret information flow can be ensured and a construction of a monitor ensuring this task


Jérémy Dubreil
Thierry Jéron http://www.irisa.fr/prive/jeron
Hervé Marchand http://www.irisa.fr/prive/hmarchan

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   Author = {Dubreil, J. and Jéron, T. and Marchand, H.},
   Title = {Monitoring Information flow by Diagnosis Techniques},
   Number = {1901},
   Institution = {IRISA},
   Month = {August},
   Year = {2008}

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