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Formal Reasoning in PL and Crypto

In my last post, I summarized some of the topics and problems considered at a recent Dagstuhl seminar I co-organized on the Synergy between Programming Languages and Cryptography. The post surveyed how programming languages often interface with cryptography in the construction of secure systems, and in particular how they can make it easier to implement cryptography, use it, or verify its correctness.

Beyond using PLs as a tool for easier/safer use of Crypto, there is an opportunity for certain kinds of thinking, or reasoning, to cross over fruitfully between the PL an Crypto communities. In particular, both communities are interested in formalizing systems and proving properties about them but they often use different methods, either due to cultural differences, or because the properties and systems of interest are simply different. During the workshop we identified both analogous, similar styles of reasoning in two communities and connection points between the different styles of reasoning. In this post I briefly highlight a few examples of each, and point to future research opportunities.

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Filed under Formal verification, Program Analysis, Secure computation, Semantics, Software Security, Uncategorized