697 results

  • Key Attack on the ACDGV Matrix Encryption Scheme

    • September 25, 2026 (13:45 - 14:45)

    • Batiment 32A salle 15

    Speaker : Anmoal Porwal - Technical University of Munich

    I will present our key-recovery attack on the ACDGV public-key encryption scheme proposed at ASIACRYPT 2024 by Aragon, Couvreur, Dyseryn, Gaborit, and Vinçotte. The secret key is a Gabidulin code hidden by appending random rows and columns and by left- and right-multiplication with invertible matrices. Our attack exploits the resulting algebraic structure to recover an equivalent secret key. It[…]

    • Cryptography

    • Asymmetric primitive

  • Au-delà du narratif : l'OSINT comme lieu de convergence entre la lutte cyber et FIMI

    • September 25, 2026 (09:00 - 10:00)

    • Inria Center of the University of Rennes

    Speaker : Hervé LETOQUEUX & Nelly PAILLEUX - CheckFirst

    Depuis 2020, CheckFirst traque les opérations de manipulation de l'information en ligne via des enquêtes en source ouverte, et tente d'objectiver la façon dont les algorithmes de recommandation contribuent à façonner l'espace informationnel en ligne. Détecter et documenter une opération de manipulation de l'information (FIMI) exige de sortir du seul contenu : infrastructures de diffusion, comptes[…]

    • Strategy

  • Dissecting CRAFT, a full-round attack

    • September 18, 2026 (13:45 - 14:45)

    • Batiment 32A salle 15

    Speaker : Eran Lambooij - Inria

    I will present the first full-round key recovery attack on CRAFT, a block cipher introduced at ToSC 2019. The attack builds on the previous observation (ToSC 2026) that the state of CRAFT can be decomposed into two parts that barely exchange information. We transform this property into a dissection attack on the full-round cipher. This shows that in some cases we can elevate the dissection attack[…]

    • Cryptography

  • MIKE: An efficient and compact NIKE Based on a Commutative Monoidal Action 

    • July 03, 2026 (13:45 - 14:45)

    • IRMAR - Université de Rennes - Campus Beaulieu Bat. 22, RDC, Rennes - Amphi Lebesgue

    Speaker : Jonathan Komada Eriksen - COSIC, KU Leuven

    Robert recently described a powerful correspondence between certain (Hermitian) modules and (polarized) abelian varieties, which simultaneously generalizes both the class-group action underlying protocols such as CSIDH, and the Deuring correspondence, underlying protocols such as SQIsign. Using this correspondence, he also proposed how to construct a post-quantum NIKE, called MIKE, which, at a[…]

    • Cryptography

  • !!! Reporté !!! Encryption homomorphe sans bruit à l'aide de groupes

    • June 26, 2026 (13:45 - 14:45)

    • IRMAR - Université de Rennes - Campus Beaulieu Bat. 22, RDC, Rennes - Amphi Lebesgue

    Speaker : Pierre Guillot - Ravel Technologies (dispo Université de Strasbourg, IRMA)

    Je vais rappeler les travaux de Nuida et Ostrovski sur l'utilisation des groupes pour l'élaboration de schémas cryptographiques homomorphes. Je vais présenter nos travaux qui fournissent des encodages à la fois plus efficaces et plus généraux, et qui déterminent exactement quels groupes peuvent être utilisés.   Puis je vais discuter GRAFHEN, un protocole qui utilise ces idées. Je dirai juste[…]

    • Cryptography

  • Security of Smart Dust: Robust Key Derivation for Single-Chip Systems

    • June 26, 2026 (11:00 - 12:00)

    • IETR - University of Rennes - Campus de BEAULIEU - Bâtiment 11D, salle numéro 18

    Speaker : Sara Faour - Inria

    The Smart Dust vision seeks to enable large networks of millimeter-scale wireless sensor nodes that tightly integrate sensing, computation, communication, and power management into a single-chip device. Establishing a robust hardware root of trust for such devices remains challenging, particularly in single, low-cost chip manufacturing processes that lack embedded writable Non-Volatile Memory (NVM[…]

    • SemSecuElec

    • PUF

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