MIKE: a fast and compact post-quantum NIKE

Andrea Basso; Pierrick Dartois; Max Duparc; Jonathan Komada Eriksen; Sabrina Kunzweiler; Michael Meyer; Giacomo Pope; Krijn Reĳnders; Damien Robert; Ryan Rueger; Sina Schaeffler

Paper 2026/2377

MIKE: a fast and compact post-quantum NIKE

Andrea Basso, IBM Research Zurich, Switzerland

Pierrick Dartois, DGA-MI, Bruz, Univ. Rennes, Inria, CNRS, IRISA, UMR 6074, F-35000, Rennes, France

Max Duparc, EPFL, Lausanne, Switzerland

Jonathan Komada Eriksen, COSIC, KU Leuven, Belgium, Nasjonal sikkerhetsmyndighet, Kolsås, Norway

Sabrina Kunzweiler, Centre Inria de l'Université de Bordeaux, France

Michael Meyer, University of Regensburg, Germany

Giacomo Pope, NCC Group, University of Bristol, United Kingdom

Krijn Reĳnders, COSIC, KU Leuven, Belgium

Damien Robert, Centre Inria de l'Université de Bordeaux, France

Ryan Rueger, IBM Research Zurich, Technical University of Munich, Germany

Sina Schaeffler, IBM Research Zurich, ETH Zurich, Switzerland

Abstract

We introduce MIKE (Module Isogeny Key Exchange), a post-quantum NIKE (Non Interactive Key Exchange) whose security relies on the CDH problem for the rank-$2$ Hermitian module action on supersingular elliptic curves. For NIST level~$1$, MIKE has very compact public keys of 80B, and using our constant time C implementation, the key generation takes 0.65ms and the shared secret takes 4.9ms (including key validation) on a AMD CPU at 3.3GHz.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Preprint.
Keywords: NIKE isogenies
Contact author(s): Andrea Basso @ ibm com
pierrick dartois @ inria fr
max duparc @ epfl ch
jeriksen @ esat kuleuven be
sabrina kunzweiler @ inria fr
michael @ random-oracles org
giacomo pope @ nccgroup com
crypto krijn @ gmail com
damien robert @ inria fr
ryan @ rueg re
sschaeffle @ ethz ch
History: 2026-10-08: approved; 2026-10-06: received; See all versions
Short URL: https://ia.cr/2026/2377
License: CC BY

BibTeX

@misc{cryptoeprint:2026/2377,
      author = {Andrea Basso and Pierrick Dartois and Max Duparc and Jonathan Komada Eriksen and Sabrina Kunzweiler and Michael Meyer and Giacomo Pope and Krijn Reĳnders and Damien Robert and Ryan Rueger and Sina Schaeffler},
      title = {{MIKE}: a fast and compact post-quantum {NIKE}},
      howpublished = {Cryptology {ePrint} Archive, Paper 2026/2377},
      year = {2026},
      url = {https://eprint.iacr.org/2026/2377}
}