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TBA : A Hybrid of Logic and Extensional Access Control Systems

  • Timothy L. Hinrichs
  • William C. GarrisonIII
  • Adam J. Lee
  • Skip Saunders
  • John C. Mitchell
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7140)

Abstract

Logical policy-based access control models are greatly expressive and thus provide the flexibility for administrators to represent a wide variety of authorization policies. Extensional access control models, on the other hand, utilize simple data structures to better enable a less trained and non-administrative workforce to participate in the day-to-day operations of the system. In this paper, we formally study a hybrid approach, tag-based authorization (TBA ), which combines the ease of use of extensional systems while still maintaining a meaningful degree of the expressiveness of logical systems. TBA employs an extensional data structure to represent metadata tags associated with subjects and objects, as well as a logical language for defining the access control policy in terms of those tags. We formally define TBA and introduce variants that include tag ontologies and delegation. We evaluate the resulting system by comparing to well-known extensional and logical access control models.

Keywords

Access Control Policy Language Access Control Model Logical Language Basic Policy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Timothy L. Hinrichs
    • 1
  • William C. GarrisonIII
    • 2
  • Adam J. Lee
    • 2
  • Skip Saunders
    • 3
  • John C. Mitchell
    • 4
  1. 1.University of ChicagoUSA
  2. 2.University of PittsburghUSA
  3. 3.MITRE CorporationUSA
  4. 4.Stanford UniversityUSA

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