Information flow testing: the third path towards confidentiality guarantee

  • Authors:
  • Gurvan Le Guernic

  • Affiliations:
  • Kansas State University, Manhattan, KS and IRISA, Rennes, France

  • Venue:
  • ASIAN'07 Proceedings of the 12th Asian computing science conference on Advances in computer science: computer and network security
  • Year:
  • 2007

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Abstract

Noninterference, which is an information flow property, is typically used as a baseline security policy to formalize confidentiality of secret information manipulated by a program. Noninterference verification mechanisms are usually based on static analyses and, to a lesser extent, on dynamic analyses. In contrast to those works, this paper proposes an information flow testing mechanism. This mechanism is sound from the point of view of noninterference. It is based on standard testing techniques and on a combination of dynamic and static analyses. Concretely, a semantics integrating a dynamic information flow analysis is proposed. This analysis makes use of static analyses results. This special semantics is built such that, once a path coverage property has been achieved on a program, a sound conclusion regarding the noninterfering behavior of the program can be established.