The composability of non-interference [system security]

  • Authors:
  • A. Zakinthinos;E. S. Lee

  • Affiliations:
  • -;-

  • Venue:
  • CSFW '95 Proceedings of the 8th IEEE workshop on Computer Security Foundations
  • Year:
  • 1995

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Abstract

The failure of non-interference to be preserved under composition is discussed. Two theorems are presented to this effect. The first proves McCullough's conjecture that non-interference is composable without feedback. The second provides a method of composition that preserves the non-interference property in the presence of feedback.