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731 results

    • Seminar

    • SemSecuElec

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

    • April 23, 2021

    • PQShield – United Kingdom - Web-Conférence

    Speaker : 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[…]
    • Seminar

    • SemSecuElec

    Security challenges and opportunities in emerging device technologies: a case study on flexible electronics

    • May 06, 2022

    • Leiden University, The Netherlands?, and KU Leuven, Belgium - Salle Pétri/Turing

    Speaker : Nele Mentens - KU Leuven, Belgium

    While traditional chips in bulk silicon technology are widely used for reliable and highly ef?cient systems, there are applications that call for devices in other technologies. On the one hand, novel device technologies need to be re-evaluated with respect to potential threats and attacks, and how these can be faced with existing and novel security solutions and methods. On the other hand,[…]
    • Seminar

    • SemSecuElec

    Automated software protection for the masses against side-channel attacks

    • May 10, 2019

    • Univ Grenoble Alpes, CEA, List - Salles Petri/Turing

    Speaker : Nicolas Belleville

    This presentation will present an approach and a tool that answer the need for effective, generic, and easily applicable protections against side-channel attacks. The protection mechanism is based on code polymorphism, so that the observable behaviour of the protected component is variable and unpredictable to the attacker. Our approach combines lightweight specialized runtime code generation with[…]
    • Seminar

    • Cryptography

    New uses in Symmetric Cryptography: from Cryptanalysis to Designing

    • May 20, 2022

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

    Speaker : Clémence Bouvier - INRIA

    New symmetric primitives are being designed to be run in abstract settings such as Multi-Party Computations (MPC) or Zero-Knowledge (ZK) proof systems. More particularly, these protocols have highlighted the need to minimize the number of multiplications performed by the primitive in large finite fields.<br/> As the number of such primitives grows, it is important to better understand the[…]
    • Seminar

    • Cryptography

    PMNS for efficient arithmetic and small memory cost

    • June 10, 2022

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

    Speaker : Fangan Yssouf Dosso - Ecole des Mines de Saint-Etienne

    The Polynomial Modular Number System (PMNS) is an integer number system which aims to speed up arithmetic operations modulo a prime p. Such a system is defined by a tuple (p, n, g, r, E), where p, n, g and r are positive integers, E is a monic polynomial with integer coefficients, having g as a root modulo p. Most of the work done on PMNS focus on polynomials E such that E(X) = X^n – l, where l is[…]
    • Seminar

    • Cryptography

    On Rejection Sampling in Lyubashevsky's Signature Scheme

    • May 06, 2022

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

    Speaker : Julien Devevey - ENS de Lyon

    Lyubashevsky’s signatures are based on the Fiat-Shamir with aborts paradigm, whose central ingredient is the use of rejection sampling to transform (secret-key-dependent) signature samples into samples from a secret-key-independent distribution. The choice of these two underly- ing distributions is part of the rejection sampling strategy, and various instantiations have been considered up to this[…]