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Issue title: STM'10
Guest editors: Gilles BartheGuest Editor, Jorge CuellarGuest Editor, Javier LopezGuest Editor and Alexander PretschnerGuest Editor
Article type: Research Article
Authors: Garg, Deepaka; * | Pfenning, Frankb
Affiliations: [a] Max Planck Institute for Software Systems, Saarbrücken, Germany | [b] Carnegie Mellon University, Pittsburgh, PA, USA
Correspondence: [*] Corresponding author: Deepak Garg, Max Planck Institute for Software Systems, Campus E1 5, D-66123 Saarbrücken, Germany. E-mail: dg@mpi-sws.org.
Abstract: We present the design, proof theory and metatheory of a logic for representing and reasoning about authorization policies. A salient feature of the logic, BL, is its support for system state in the form of interpreted predicates, upon which authorization policies often rely. In addition, BL includes Abadi et al.'s “says” connective and explicit time. BL is illustrated through a case study of policies for sharing sensitive information created in the US intelligence community. We discuss design choices in the interaction between state and other features of BL and validate BL's proof theory by proving standard metatheoretic properties like admissibility of cut.
Keywords: Authorization logic, proof theory, stateful policies
DOI: 10.3233/JCS-2012-0456
Journal: Journal of Computer Security, vol. 20, no. 4, pp. 353-391, 2012
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