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arXiv · 1902.06590

A Dependently Typed Library for Static Information-Flow Control in Idris

Simon Gregersen·Søren Eller Thomsen·Aslan Askarov
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Abstract

Safely integrating third-party code in applications while protecting the confidentiality of information is a long-standing problem. Pure functional programming languages, like Haskell, make it possible to enforce lightweight information-flow control through libraries like MAC by Russo. This work presents DepSec, a MAC inspired, dependently typed library for static information-flow control in Idris. We showcase how adding dependent types increases the expressiveness of state-of-the-art static information-flow control libraries and how DepSec matches a special-purpose dependent information-flow type system on a key example. Finally, we show novel and powerful means of specifying statically enforced declassification policies using dependent types.

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Simon Gregersen, Søren Eller Thomsen, Aslan Askarov. 2019-02-18. A Dependently Typed Library for Static Information-Flow Control in Idris. https://doi.org/10.1007/978-3-030-17138-4_3

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