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758 results

    • Seminar

    • SemSecuElec

    Calibration Done Right: Noiseless Flush+Flush Attacks

    • March 19, 2021

    • DGA-IRISA - Web-Conférence

    Speaker : Guillaume Didier

    Caches leak information through timing measurements and so-called side-channel attacks. Several primitives exist with different requirements and trade-offs. Flush+Flush is a stealthy and fast cache attack primitive that uses the timing of the clflush instruction depending on the presence of a line in the cache. However, the CPU interconnect plays a bigger role than thought in these timings, and[…]
    • Seminar

    • SemSecuElec

    TRAITOR : a multi clock-glitch attack platform reproducing EMI effects at low-cost

    • April 05, 2019

    • INRIA - Salles Pétri/Turing

    Speaker : Ludovic Claudepierre

    Electromagnetic injection (EMI) is a common and non-invasive technique used to perform fault attacks. In that case, an electromagnetic wave is radiated by an antenna in the close vicinity of the targeted microcontroller (STM32 in our case).The clock signal is generated thanks to a Phase-Locked-Loop (PLL). The PLL is highly sensitive to EMI and then induces severe disruption on the clock signal[…]
    • Seminar

    • SemSecuElec

    Unique CAD-compatible SCA-security mechanisms, externally amplified coupling (EAC) attacks and (some) connection

    • June 25, 2021

    • Bar-Ilan University (BIU) - Web-Conférence

    Speaker : Itamar Levi

    In this seminar I will first discuss unique computer aided design (CAD) compatible SCA security mechanisms. I will present an approach which can significantly increase the physical security-level of a design, be implemented with conventional design-tools and which does not require any special technological-support. The method consists with a correct by-design utilization of power-management[…]
    • Seminar

    • SemSecuElec

    Bridging Deep Learning and Classical Profiled Side-Channel Attacks

    • April 08, 2022

    • Thales ITSEF, Toulouse - Salle Pétri/Turing

    Speaker : Gabriel Zaid

    Over the recent years, the cryptanalysis community leveraged the potential of research on Deep Learning to enhance attacks. In particular, several studies have recently highlighted the benefits of Deep Learning based Side-Channel Attacks (DLSCA) to target real-world cryptographic implementations. While this new research area on applied cryptography provides impressive result to recover a secret[…]
    • Seminar

    • SemSecuElec

    Challenges related to random number generation for cryptographic applications

    • June 07, 2019

    • Laboratoire Hubert Curien - Salles Petri/Turing

    Speaker : Elie Noumon Allini

    The main purpose of cryptography is to ensure secure communication. In order to achieve this goal, cryptographic schemes make an intensive use of random numbers. Given that the security of these schemes highly depends on these numbers, it is important to produce high-quality random numbers. Knowing that most cryptographic modules are nowadays implemented in logic devices, we investigated True[…]
    • Seminar

    • Cryptography

    Isogenies over Hessian Model of Elliptic Curves

    • June 03, 2022

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

    Speaker : 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[…]