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    • Seminar

    • Cryptography

    Soutenance de thèse

    • October 07, 2016

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

    Speaker : Brice Minaud - Université Rennes 1

    TBD

    • Seminar

    • Cryptography

    tbd

    • September 18, 2015

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

    Speaker : Hugues Randriam - Telecom Paristech

    tbd

    • Seminar

    • Cryptography

    Construction d'une petite boite S 8-bit avec branchement 3 (&applications)

    • April 29, 2016

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

    Speaker : Pierre Karpman - Rennes 1 et Singapour

    Je présenterai la construction et l'implémentation d'une boîte S sur 8 bits qui a un branchement linéaire et différentiel de 3. Je montrerai une application en construisant un chiffre par bloc sur 64 bits dont la structure est très simple et basée sur l'évaluation en tranches (bitsliced) et des rotations sur mots de 8 bits. La fonction de tour de ce chiffre peut s'implémenter avec le même nombre d[…]

    • Seminar

    • Cryptography

    Computing individual discrete logarithms in non-prime finite fields

    • November 13, 2015

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

    Speaker : Aurore Guillevic - Inria Saclay, équipe Grace et Ecole Polytechnique, LIX

    This talk is about computing discrete logarithms in non-prime finite fields. These fields arise in pairing-based cryptography. In this setting, the pairing-friendly curve is defined over GF(q) and the pairing takes its values in an extension GF(q^k), where k is the embedding degree.<br/> Fr example, GF(p^2) is the embedding field of supersingular elliptic curves in large characteristic; GF(p^3),[…]

    • Seminar

    • Cryptography

    Speeding up Fully Homomorphic Encryption

    • June 10, 2016

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

    Speaker : Marie Paindavoine - Orange Labs

    Access to encrypted data is often “all-or-nothing” : either one has to decrypt everything, or one cannot read anything. Following Gentry’s work in 2009, fully homomorphic encryption has gained more and more attention, in particular because it allows more flexibility on encrypted data access and process. It is now possible to evaluate functions on encrypted data and get only the result – encrypted[…]

    • Seminar

    • Cryptography

    Cyclic and quasi-cyclic separable Goppa codes

    • November 14, 2014

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

    Speaker : Sergey Bezzateev - Université d'État de Saint-Pétersbourg

    Overview of recent results in constructions of cyclic and quasi-cyclic Goppa codes. Classical and generalized Goppa codes are considered. Subclasses of embedded optimal quasi-cyclic Goppa codes with improvement parameters are presented.
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