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644 résultats

    • Séminaire

    • SemSecuElec

    libecc: a flexible open-source ECC library for embedded devices

    • 14 février 2020

    • ANSSI - Salle Pétri/Turing

    Orateur : Ryad Benadjila et Arnaud Ebalard

    libecc is a software library for elliptic curves based cryptography (ECC), with an API supporting signature algorithms specified in the ISO14888-3 standard.Advanced usages of this library also include the possible implementation of elliptic curve based Diffie-Hellman protocols as well as any algorithm on top of prime fields based elliptic curves (or prime fields, or rings of integers).The[…]

    • Séminaire

    • SemSecuElec

    Étude des cellules oscillantes pour la génération d’aléa dans les circuits électroniques numériques

    • 14 décembre 2018

    • Univ Lyon, UJM-Saint-Etienne, CNRS, Laboratoire Hubert Curien - Salle Métivier

    Orateur : Ugo Mureddu

    Les objets connectés sont omniprésents dans notre société actuelle (ex : véhicules, transports en commun, santé, domotique, smartphone, moyen de paiement, etc.). La connexion et l’accès à distance des appareils d’usage quotidien améliore considérablement notre confort et notre efficacité dans notre vie professionnelle comme personnelle. Cependant, cela peut également nous confronter à des[…]

    • Séminaire

    • SemSecuElec

    Post-Quantum Cryptography Hardware: Monolithic Implementations vs. Hardware-Software Co-Design

    • 23 avril 2021

    • PQShield – United Kingdom - Web-Conférence

    Orateur : Markku-Juhani Saarinen

    At PQShield, we’ve developed dedicated coprocessor(s) for lattice schemes, hash-based signatures, and code-based cryptography. These cryptographic modules are commercial rather than academic and designed to meet customer specifications such as a specific performance profile or Common Criteria and FIPS security certification requirements.Hardware implementations of legacy RSA and Elliptic Curve[…]

    • Séminaire

    • SemSecuElec

    Do Not Trust Modern System-on-Chips - Electromagnetic fault injection against a System-on-Chip

    • 10 mai 2019

    • INRIA - Salles Petri/Turing

    Orateur : Ronan Lashermes

    Electromagnetic fault injection (EMFI) is a well known technique to disturb the behavior of a chip and weaken its security. These attacks are still mostly done on simple microcontrollers since the fault effects is relatively simple and understood.Unlocking EMFI on modern System-on-Chips (SoCs), the fast and complex chips ubiquitous today, requires to understand the impact of the faults. In this[…]

    • Séminaire

    • Cryptographie

    Isogenies over Hessian Model of Elliptic Curves

    • 03 juin 2022

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

    Orateur : Emmanuel Fouotsa - Université de Bamenda

    In this talk we present explicit formulas for isogenies between elliptic curves in (twisted) Hessian form. We examine the numbers of operations in the base field to compute the formulas. In comparison with other isogeny formulas, we note that the obtained formulas for twisted Hessian curves have the lowest costs for processing the kernel and the X-affine formula has the lowest cost for processing[…]

    • Séminaire

    • Cryptographie

    Soutenance de thèse: Algebraic Cryptanalysis of the Shortest Vector Problem in Ideal Lattices

    • 13 juin 2022

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

    Orateur : Olivier Bernard - Rennes

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