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    • Seminar

    • Cryptography

    Correction of dual lattice attacks

    • April 19, 2024

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

    Speaker : Kevin Carrier - CY Cergy

    The security of cryptographic systems such as Kyber and Dilithium (currently undergoing standardization by NIST) fundamentally hinges on the Learning With Errors (LWE) problem. However, the state of the art for attacking this problem is not yet entirely clear. Specifically, the validity of dual attacks on LWE is currently under scrutiny due to their analyses relying on heuristics that have proven[…]

    • Working group

    Modélisation statistique et sécurité des générateurs d'aléa pour la cryptographie

    • April 08, 2023 (11:00 - 12:00)

    • À l'IRISA, campus de Beaulieu, Rennes

    Speaker : David Lubicz - DGA, IRMAR

    Dans cet exposé on essaie d'expliquer ce que l'on entend pas méthodes statistiques et on donne des exemples concrets d'application dans la cybersécurité.

    • Cryptography

    • Working group

    Analyse statistique des extrêmes pour la modélisation d'évènements rares ou atypiques

    • April 08, 2023 (10:00 - 11:00)

    • À l'IRISA, campus de Beaulieu, Rennes

    Speaker : Gilles Stupfler - ENSAI

    • Seminar

    • SoSysec

    How to decrypt without keys with GlobalPlatform SCP02 protocol

    • July 06, 2018

    • Inria Center of the University of Rennes - - Room TBD

    Speaker : par Loic Ferreira (Orange Labs, IRISA)

    The GlobalPlatform SCP02 protocol is a security protocol implemented in smart cards, and used by transport companies, in the banking world and by mobile network operators (UICC/SIM cards). We describe how to perform a padding oracle attack against SCP02. The attack allows an adversary to efficiently retrieve plaintext bytes from an encrypted data field. We provide results of our experiments done[…]

    • Seminar

    • SoSysec

    Breaking and fixing HB+DB: A Short Tale of Provable vs Experimental Security and Lightweight Designs

    • February 02, 2018

    • Inria Center of the University of Rennes - - Room TBD

    Speaker : Ioana Boureanu (University of Surrey)

    HB+ is a well-know authentication scheme purposely designed to be lightweight. However, HB+ is vulnerable to a key-recovery, man-in-the-middle (MiM) attack dubbed GRS. To this end, at WiSec2015, the HB+DB protocol added a distance-bounding dimension to HB+, which was experimentally shown to counteract the GRS attack.In this talk, we will exhibit however a number of security flaws in the HB+DB[…]

    • Seminar

    • SoSysec

    Voting : You Can’t Have Privacy without Individual Verifiability

    • March 01, 2019

    • Inria Center of the University of Rennes - - Room TBD

    Speaker : Joseph Lallemand (Loria)

    Electronic voting typically aims at two main security goals: vote privacy and verifiability. These two goals are often seen as antagonistic and some national agencies even impose a hierarchy between them: first privacy, and then verifiability as an additional feature. Verifiability typically includes individual verifiability (a voter can check that her ballot is counted); universal verifiability […]
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