718 results

• • Seminar

  • SoSysec

  Differentially Private Linear Sketches: Efficient Implementations and Applications

  • February 10, 2023 (09:30 - 10:30)

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

  Speaker : Fuheng Zhao (University of California Santa Barbara)

  Linear sketches have been widely adopted to process fast data streams, and they can be used to accurately answer frequency estimation, approximate top K items, and summarize data distributions. When data are sensitive, it is desirable to provide privacy guarantees for linear sketches to preserve private information while delivering useful results with theoretical bounds. To address these[…]

• • Seminar

  • SoSysec

  Model Stealing Attacks Against Inductive Graph Neural Networks

  • February 18, 2022

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

  Speaker : Yufei Han (INRIA)

  Many real-world data come in the form of graphs. Graph neural networks (GNNs), a new family of machine learning (ML) models, have been proposed to fully leverage graph data to build powerful applications. In particular, the inductive GNNs, which can generalize to unseen data, become mainstream in this direction. Machine learning models have shown great potential in various tasks and have been[…]

• • Seminar

  • SoSysec

  Cybersecurity of industrial systems. Open problems and some ideas.

  • February 07, 2020

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

  Speaker : Stéphane Mocanu (Inria Rhône-Alpes)

  Research in cybersecurity of SCADA systems is a relatively recent field developed mainly into the last decade. Despite the manufacturers progress in hardening the security of device SCADA systems are still prone to severe vulnerabilities and specialized countermeasures are still incipient. This talk aims to present the open problems seen from the boundary between computer science and control[…]

• • Seminar

  • SemSecuElec

  Masked Proofs and Their Physical Assumptions

  • April 20, 2018

  • Radboud Univeriteit, Nijmegen - Salles Petri/Turing

  Speaker : Vincent Grosso

  Les attaques par canaux auxiliaires sont des menaces majeures contre les mises en uvre cryptographiques. Pour contrer ces attaques, le masquage est une contre-mesure populaire. Un de ces principaux avantages est de pouvoir prouver la sécurité apportée par cette contre-mesure. Ces preuves se basent sur un certain nombre d’hypothèses sur le matériel qui met en uvre le masquage. Dans cette[…]

• • Seminar

  • SemSecuElec

  Vers une meilleure compréhension de l’apprentissage profond appliqué aux attaques par observation

  • January 10, 2020

  • CEA - Salle Métivier

  Speaker : Loïc Masure

  Les attaques par observation (SCA) exploitent les failles d’une primitive cryptographique embarquée sur un composant (type carte à puce, IoT, …), en mesurant des grandeurs physiques qui dépendent indirectement de la valeur de la clé secrète. C’est pourquoi il est primordial pour les développeurs de proposer des contre-mesures adaptées et d’évaluer leur efficacité face à un attaquant potentiel.Au[…]

• • Seminar

  • SemSecuElec

  Lattice-based NIST candidates: abstractions and ninja tricks

  • April 23, 2021

  • PQShield – United Kingdom - Web-Conférence

  Speaker : Thomas Prest

  I will present the remaining lattice-based candidates for standardization by NIST (2 signature schemes, 5 encryption schemes). At a high level, these can all be interpreted as straightforward instantiations of decades-old paradigms. But when we look under the hood, all of them make design choices which impact their security, efficiency and portability in distinct manners; we will discuss these.[…]