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740 résultats

• • Séminaire

  • Cryptographie

  Password-Authenticated Key Exchange (PAKE) from Isogenies

  • 08 décembre 2023

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

  Orateur : Sabrina Kunzweiler - Université Bordeaux

  The passwords that we use in our everyday life are often chosen to be easily memorable which makes them vulnerable to attacks. This problem is addressed by password-authenticated key exchange (PAKE). The general idea is to enable two parties who share the same (potentially weak) password to establish a strong session key. Most PAKE protocols used today are based on Diffie-Hellman key exchange in[…]

• • Séminaire

  • Cryptographie

  Updatable Public Key Encryption with Lattices

  • 23 février 2024

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

  Orateur : Calvin Abou-Haidar - ENS Lyon

  Updatable public key encryption has recently been introduced as a so- lution to achieve forward-security in the context of secure group messaging without hurting efficiency, but so far, no efficient lattice-based instantia- tion of this primitive is known. In this work, we construct the first LWE-based UPKE scheme with polynomial modulus-to-noise rate, which is CPA-secure in the standard model. At[…]

• • Groupe de travail

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

  • 08 avril 2023 (11:00 - 12:00)

  • À l'IRISA, campus de Beaulieu, Rennes

  Orateur : 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

• • Groupe de travail

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

  • 08 avril 2023 (10:00 - 11:00)

  • À l'IRISA, campus de Beaulieu, Rennes

  Orateur : Gilles Stupfler - ENSAI

• • Séminaire

  • SoSysec

  Subject Access Request and Proof of Ownership

  • 25 octobre 2019

  • Inria Center of the University of Rennes - - See the page of each talk for the room.

  Orateur : Cédric Lauradoux (INRIA Rhône-Alpes)

  The GDPR (General Data Protection Regulation) provides rights on our data: access, rectification, objection, etc. However, this regulation is not binding on how we can exercise these rights. Data controllers have therefore deployed various methods to authenticate subject requests. We have analyzed how this authentication process can fail and examined its consequences. Our study shows that a key[…]

• • Séminaire

  • SoSysec

  Splitting the Linux Kernel for Fun and Profit

  • 07 décembre 2018

  • Inria Center of the University of Rennes - - See the page of each talk for the room.

  Orateur : Chris Dalton (HP, Bristol, UK)

  This talk looks at a pragmatic attempt at strengthening the security properties of Linux by introducing a degree of intra-kernel protection into the Linux kernel (supported by CPU Virtualization silicon features). Consider it, if you like, an attempt at retrofitting a ‘micro-kernel’ interface into traditionally monolithic Linux whilst maintaining a single linux code base (yes it’s still Linux), no[…]