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Erschienen in:
2011 | OriginalPaper | Buchkapitel
Stateful Authorization Logic:
Proof Theory and a Case Study
verfasst von : Deepak Garg, Frank Pfenning
Erschienen in: Security and Trust Management
Verlag: Springer Berlin Heidelberg
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Authorization policies can be conveniently represented and reasoned about in logic. Proof theory is important for many such applications of logic. However, so far, there has been no systematic study of proof theory that incorporates system state, upon which access policies often rely. The present paper fills this gap by presenting the design and proof theory of an authorization logic BL that, among other features, includes direct support for external procedures to verify predicates on system state. We discuss design choices in the interaction between state and other features of the logic and validate the logic both foundationally, by proving relevant metatheoretic properties of the logic’s proof system, and empirically, through a case study of policies that control access to sensitive intelligence information in the U.S.