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Issue title: 21st IEEE Computer Security Foundations Symposium (CSF'08)
Guest editors: Andrei SabelfeldGuest Editor
Article type: Research Article
Authors: Clarkson, Michael R.; * | Schneider, Fred B.
Affiliations: Department of Computer Science, Cornell University, Ithaca, NY, USA. E-mails: clarkson@cs.cornell.edu, fbs@cs.cornell.edu
Correspondence: [*] Corresponding author.
Abstract: Trace properties, which have long been used for reasoning about systems, are sets of execution traces. Hyperproperties, introduced here, are sets of trace properties. Hyperproperties can express security policies, such as secure information flow and service level agreements, that trace properties cannot. Safety and liveness are generalized to hyperproperties, and every hyperproperty is shown to be the intersection of a safety hyperproperty and a liveness hyperproperty. A verification technique for safety hyperproperties is given and is shown to generalize prior techniques for verifying secure information flow. Refinement is shown to be applicable with safety hyperproperties. A topological characterization of hyperproperties is given.
Keywords: Security policies, information flow, safety, liveness
DOI: 10.3233/JCS-2009-0393
Journal: Journal of Computer Security, vol. 18, no. 6, pp. 1157-1210, 2010
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