Mobile Calculi based on Domains

Typing noninterference for reactive programs

A. Matos and G. Boudol and I. Castellani


We propose a type system to enforce the security property of {\em noninterference} in a core reactive language, obtained by extending the imperative language of Volpano, Smith and Irvine with reactive primitives that manipulate broadcast signals, as well as with a form of ``scheduled'' parallelism. Due to the particular nature of reactive computations, the definition of noninterference has to be adapted. We give a formulation of noninterference based on bisimulation. Our type system is inspired by that introduced by Boudol and Castellani, and independently by Smith, to cope with nontermination and time leaks in a language for parallel programs with scheduling. We establish the soundness of this type system with respect to our notion of noninterference.

  author = \{A. Matos and G. Boudol and I. Castellani},
  title = \{Typing noninterference for reactive programs},
  booktitle = \{Foundations of Computer Security},
  year = \{2004}, 
  url = \{}

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