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10 résultats

    • Séminaire

    • Cryptographie

    Verification of Rust Cryptographic Implementations with Aeneas

    • 13 février 2026 (13:45 - 14:45)

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

    Orateur : Aymeric Fromherz - Inria

    From secure communications to online banking, cryptography is the cornerstone of most modern secure applications. Unfortunately, cryptographic design and implementation is notoriously error-prone, with a long history of design flaws, implementation bugs, and high-profile attacks. To address this issue, several projects proposed the use of formal verification techniques to statically ensure the[…]

    • Séminaire

    • Cryptographie

    On the average hardness of SIVP for module lattices of fixed rank

    • 06 mars 2026 (13:45 - 14:45)

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

    Orateur : Radu Toma - Sorbonne Université

    In joint work with Koen de Boer, Aurel Page, and Benjamin Wesolowski, we study the hardness of the approximate Shortest Independent Vectors Problem (SIVP) for random module lattices. We use here a natural notion of randomness as defined originally by Siegel through Haar measures. By proving a reduction, we show it is essentially as hard as the problem for arbitrary instances. While this was[…]

    • Séminaire

    • SemSecuElec

    Sécurité physique du mécanisme d'encapsulation de clé Classic McEliece

    • 20 mars 2026 (10:00 - 11:00)

    • Inria Center of the University of Rennes - Espace de conférences

    Orateur : Brice Colombier - Laboratoire Hubert Curien, Université Jean Monnet, Saint-Étienne

    Le mécanisme d'encapsulation de clé Classic McEliece faisait partie des candidats toujours en lice au dernier tour du processus de standardisation de la cryptographie post-quantique initié par le NIST en 2016. Fondé sur les codes correcteurs d'erreurs, en particulier autour du cryptosystème de Niederreiter, sa sécurité n'a pas été fondamentalement remise en cause. Néanmoins, un aspect important du[…]

    • SemSecuElec

    • Implementation of cryptographic algorithm

    • Séminaire

    • SemSecuElec

    Double Strike: Breaking Approximation-Based Side-Channel Countermeasures for DNNs

    • 20 mars 2026 (11:00 - 12:00)

    • Inria Center of the University of Rennes - Espace de conférences

    Orateur : Lorenzo CASALINO - CentraleSupélec

    Deep neural networks (DNNs) undergo lengthy and expensive training procedures whose outcome - the DNN weights - represents a significant intellectual property asset to protect. Side-channel analysis (SCA) has recently appeared as an effective approach to recover this confidential asset of DNN implementations. Ding et al. (HOST’25) introduced MACPRUNING, a novel SCA countermeasure based on pruning,[…]

    • SemSecuElec

    • Side-channel

    • Séminaire

    • Cryptographie

    Lightweight (AND, XOR) Implementations of Large-Degree S-boxes

    • 20 mars 2026 (13:45 - 14:45)

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

    Orateur : Marie Bolzer - LORIA

    The problem of finding a minimal circuit to implement a given function is one of the oldest in electronics. In cryptography, the focus is on small functions, especially on S-boxes which are classically the only non-linear functions in iterated block ciphers. In this work, we propose new ad-hoc automatic tools to look for lightweight implementations of non-linear functions on up to 5 variables for[…]

    • Cryptography

    • Symmetrical primitive

    • Implementation of cryptographic algorithm

    • Séminaire

    • Cryptographie

    Algorithms for post-quantum commutative group actions

    • 27 mars 2026 (13:45 - 14:45)

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

    Orateur : Marc Houben - Inria Bordeaux

    At the historical foundation of isogeny-based cryptography lies a scheme known as CRS; a key exchange protocol based on class group actions on elliptic curves. Along with more efficient variants, such as CSIDH, this framework has emerged as a powerful building block for the construction of advanced post-quantum cryptographic primitives. Unfortunately, all protocols in this line of work are[…]
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