[Resource Topic] 2020/379: Post-quantum WireGuard

Welcome to the resource topic for 2020/379

Title:
Post-quantum WireGuard

Authors: Andreas Hülsing, Kai-Chun Ning, Peter Schwabe, Florian Weber, Philip R. Zimmermann

Abstract:

In this paper we present PQ-WireGuard, a post-quantum variant of the handshake in the WireGuard VPN protocol (NDSS 2017). Unlike most previous work on post-quantum security for real-world protocols, this variant does not only consider post-quantum confidentiality (or forward secrecy) but also post-quantum authentication. To achieve this, we replace the Diffie-Hellman-based handshake by a more generic approach only using key-encapsulation mechanisms (KEMs). We establish security of PQ-WireGuard, adapting the security proofs for WireGuard in the symbolic model and in the standard model to our construction. We then instantiate this generic construction with concrete post-quantum secure KEMs, which we carefully select to achieve high security and speed. We demonstrate competitiveness of PQ-WireGuard presenting extensive benchmarking results comparing to widely deployed VPN solutions.

ePrint: https://eprint.iacr.org/2020/379

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