Possibilistic Definitions of Security - An Assembly Kit

  • Authors:
  • Heiko Mantel

  • Affiliations:
  • -

  • Venue:
  • CSFW '00 Proceedings of the 13th IEEE workshop on Computer Security Foundations
  • Year:
  • 2000

Quantified Score

Hi-index 0.00

Visualization

Abstract

We present a framework in which different notions of security can be defined in a uniform and modular way. Each definition of security is formalized as a security predicate by assembling more primitive basic security predicates. A collection of such basic security predicates is defined and we demonstrate how well known concepts like generalized non-interference or separability can be constructed from them.The framework is open and can be extended with new basic security predicates using a general schema. We investigate the compatibility of the assembled definitions with system properties apart from security and propose a new definition of security, which does not restrict non-critical information flow. It turns out that the modularity of our framework simplifies this investigation. Finally, we discuss the stepwise development of secure systems.