Table of contents

  • This session has been presented December 20, 2024 (11:00 - 12:00).

Description

  • Speaker

    Licinius-Pompiliu BENEA - Univ. Grenoble Alpes, CEA, LETI

Ring oscillators (ROs) are often used in true random number generators (TRNGs). The jitter of their clock signal, used as a source of randomness, stems from thermal and flicker noises. While thermal noise jitter is often identified as the main source of randomness, flicker noise jitter is not taken into account due to its autocorrelated nature which greatly complexifies modelling. However, it is a noise that has an increasingly large contribution as technology nodes decrease. This talk presents our recent work studying the influence of flicker noise on the entropy of a RO-based TRNG. The methodology is based on a phase noise emulator that integrates flicker and thermal noises, and generates jittered time series thus enabling the output of the TRNG (series of random bits) to be obtained. From this emulator, the impact of the flicker noise on the entropy can be quantified and analysed.  

Practical infos

Next sessions

  • Protection des processeurs modernes face à la vulnérabilité Spectre

    • April 24, 2026 (10:00 - 11:00)

    • IETR - University of Rennes - Campus de BEAULIEU - Bâtiment 11D, salle numéro 18

    Speaker : Herinomena ANDRIANATREHINA - Inria

    Dans la quête permanente d'une puissance de calcul plus rapide, les processeurs modernes utilisent des techniques permettant d'exploiter au maximum leurs ressources. Parmi ces techniques, l'exécution spéculative tente de prédire le résultat des instructions dont l'issue n'est pas encore connue, mais dont dépend la suite du programme. Cela permet au processeur d'éviter d'être inactif. Cependant,[…]

    • SemSecuElec

    • Micro-architectural vulnerabilities

  • Post-Quantum Cryptography Accelerated by a Superscalar RISC-V Processor

    • April 24, 2026 (11:00 - 12:00)

    • IETR - University of Rennes - Campus de BEAULIEU - Bâtiment 11D, salle numéro 18

    Speaker : Côme Allart - Inria

    Two major changes are currently taking place in the embedded processor ecosystem: open source with the RISC-V instruction set, which could replace the ARM one, and post-quantum cryptography (PQC), which could replace classic asymmetric cryptography algorithms to resist quantum computers.In this context, this thesis investigates the improvement of embedded processor performance, generally for[…]

    • SemSecuElec

    • Implementation of cryptographic algorithm

  • Chamois: Formally verified compilation for optimisation and security

    • June 26, 2026 (10:00 - 11:00)

    • IETR - University of Rennes - Campus de BEAULIEU - Bâtiment 11D, salle numéro 18

    Speaker : David MONNIAUX - CNRS - Verimag

    Embedded programs (including those on smart cards) are often developed in C and then compiled for the embedded processor. Sometimes they are modified by hand to incorporate countermeasures (fault attacks, etc.), but care must be taken to ensure that this does not disrupt normal program execution and that the countermeasure is actually adequate for blocking the attacks.In the process, it is[…]

    • SemSecuElec

    • Fault injection

    • Formal methods

  • Securing processor's microarchitecture against SCA in a post-quantum cryptography setting

    • October 16, 2026 (10:00 - 11:00)

    • IETR - University of Rennes - Campus de BEAULIEU - Bâtiment 11D, salle numéro 18

    Speaker : Vincent MIGLIORE - LAAS-CNRS

    Hardware microarchitecture is a well-known source of side-channel leakages, providing a notable security reduction of standard cryptographic algorithms (e.g. AES) if not properly addressed by software or hardware. In this talk, we present new design approaches to harden processor's microarchitecture against power-based side-channel attacks, relying on configurable and cascadable building blocks[…]

    • SemSecuElec

    • Side-channel

    • Micro-architectural vulnerabilities

Show previous sessions
Page top