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Modelling Opacity using Petri Nets

Lookup NU author(s): Dr Jeremy Bryans, Professor Maciej KoutnyORCiD, Professor Peter Ryan



We consider opacity as a property of the local states of the secure (or high-level) part of the system, based on the observation of the local states of a low-level part of the system as well as actions. We propose a Petri net modelling technique which allows one to specify different information flow properties, using suitably defined observations of system behaviour. We then discuss expressiveness of the resulting framework and the decidability of the associated verification problems.

Publication metadata

Author(s): Bryans J, Koutny M, Ryan P

Publication type: Report

Publication status: Published

Series Title: School of Computing Science Technical Report Series

Year: 2004

Pages: 14

Print publication date: 01/04/2004

Source Publication Date: April 2004

Report Number: 840

Institution: School of Computing Science, University of Newcastle upon Tyne

Place Published: Newcastle upon Tyne