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Conference papers

Decoding supercodes of Gabidulin codes and applications to cryptanalysis

Maxime Bombar 1 Alain Couvreur 1
1 GRACE - Geometry, arithmetic, algorithms, codes and encryption
Inria Saclay - Ile de France, LIX - Laboratoire d'informatique de l'École polytechnique [Palaiseau]
Abstract : This article discusses the decoding of Gabidulin codes and shows how to extend the usual decoder to any supercode of a Gabidulin code at the cost of a significant decrease of the decoding radius. Using this decoder, we provide polynomial time attacks on the rank-metric encryption schemes RAMESSES and LIGA.
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Submitted on : Thursday, June 10, 2021 - 3:45:39 PM
Last modification on : Wednesday, February 2, 2022 - 3:58:44 PM

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Maxime Bombar, Alain Couvreur. Decoding supercodes of Gabidulin codes and applications to cryptanalysis. Post-Quantum Cryptography 2021, Jul 2021, Daejeon, South Korea. pp.3-22, ⟨10.1007/978-3-030-81293-5_1⟩. ⟨hal-03256980⟩



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