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Stateful Authorization Logic Proof Theory and a Case Study

Summary: Stateful Authorization Logic
Proof Theory and a Case Study
Deepak Garg
Carnegie Mellon University
Frank Pfenning
Computer Science Department
Carnegie Mellon University
July 15, 2011
We present the design, proof theory and metatheory of a logic for represent-
ing 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 U.S. intelligence com-
munity. We discuss design choices in the interaction between state and other
features of BL and validate BL's proof theory by proving standard properties


Source: Andrews, Peter B. - Department of Mathematical Sciences, Carnegie Mellon University
Pfenning, Frank - School of Computer Science, Carnegie Mellon University


Collections: Computer Technologies and Information Sciences; Mathematics