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Conference Papers Year : 2023

A General Noninterference Policy for Polynomial Time


We introduce a new noninterference policy to capture the class of functions computable in polynomial time on an object-oriented programming language. This policy makes a clear separation between the standard noninterference techniques for the control flow and the layering properties required to ensure that each "security" level preserves polynomial time soundness, and is thus very powerful as for the class of programs it can capture. This new characterization is a proper extension of existing tractable characterizations of polynomial time based on safe recursion. Despite the fact that this noninterference policy is Π 0 1-complete, we show that it can be instantiated to some decidable and conservative instance using shape analysis techniques.
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hal-04190355 , version 1 (29-08-2023)


Attribution - NonCommercial - ShareAlike



Emmanuel Hainry, Romain Péchoux. A General Noninterference Policy for Polynomial Time. POPL 23, Jan 2023, Boston, United States. pp.806 - 832, ⟨10.1145/3571221⟩. ⟨hal-04190355⟩
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