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A Petri Net Model of Access Control Mechanisms.

Fugini, Mariagrazia; Martella, Giancarlo

Politecnico die Milano, Report No. REPT--86--029, 1986.

Also in: Information Systems, Vol. 13, No. 1, pages 53-63. 1988.

Abstract: An access control mechanism for complex control policies can be viewed as several, separate mechanisms, each enforcing a simple policy; such models cooperate to enforce the global system policies. In order to follow this approach it is convenient to model access control mechanisms with Petri-nets. The authors identify and model a set of elementary control policies and show how some information system policies such as discretionary access, constrained access, and cooperative authorization can be obtained as a combination of these elementary policies.

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