Description
Many code-based cryptosystems have been proposed recently, especially in response to the call for post-quantum cryptography standardization issued by the National Institute of Standards and Technologie. Most code-based cryptosystem rely on the same idea: an error-correcting code with some special structural properties (including good error-correction capacity) serves as the private key. This code is transformed and displayed in a form that is (supposedly) indistinguishable from a random code: this serves as the public key. However, in some cases, one can distinguish the public key from a random code. We will present such a distinguisher, the "squared code distinguisher", and how this can be used to perform key recovery attacks in polynomial time on some cryptosystems such as the RLCE scheme [Wang 2016] or the Expanded Reed-Solomon scheme [Khathuria, Rosenthal, Weger 2019].<br/> lien: http://desktop.visio.renater.fr/scopia?ID=723838***5009&autojoin
Prochains exposés
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Schéma de signature à clé publique : Frobénius-UOV
Orateur : Gilles Macario-Rat - Orange
L'exposé présente un schéma de signature à clé publique post-quantique inspiré du schéma UOV et introduisant un nouvel outil : les formes de Frobénius. L'accent est mis sur le rôle et les propriétés des formes de Frobénius dans ce nouveau schéma : la simplicité de description, la facilité de mise en oeuvre et le gain inédit sur les tailles de signature et de clé qui bat RSA-2048 au niveau de[…] -
Yoyo tricks with a BEANIE
Orateur : Xavier Bonnetain - Inria
TBD-
Cryptography
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Symmetrical primitive
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