The π-Calculus has been developed to reason about behavioural equivalence. Different notations of equivalence are defined in terms of process interactions, as well as the context of processes. There are various extensions of the π-Calculus, such as the SPI calculus, which has primitives to facilitate security protocol design. Another area of computer security is access control research, which includes problems of scess control models, polities and access control mechanism. The design of a unified framework for access control requires that all policies are supported and different access control modles are instantiated correctly. In this paper we will utilize the to π-Calculus reason about access control policies and mechanism. An equivalence of different policy implementations, as well as access control mechanism will be shown. Finally some experiences regarding the use of π-Calculus are presented.
B R I C S Report Series, 2003, Issue RS-03-39, p. 1-38