Game Semantics for Access Control

  • Authors:
  • Samson Abramsky;Radha Jagadeesan

  • Affiliations:
  • Oxford University Computing Laboratory, Wolfson Building, Parks Road, Oxford OX1 3QD, U.K.;School of CTI, DePaul University, 243 S. Wabash Ave, Chicago, Illinois 6064--2287, U.S.A.

  • Venue:
  • Electronic Notes in Theoretical Computer Science (ENTCS)
  • Year:
  • 2009

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Abstract

We introduce a semantic approach to the study of logics for access control and dependency analysis, based on Game Semantics. We use a variant of AJM games with explicit justification (but without pointers). Based on this, we give a simple and intuitive model of the information flow constraints underlying access control. This is used to give strikingly simple proofs of non-interference theorems in robust, semantic versions.