Quentin Dufour’s PhD defense will be held online on February 24 at 4pm

You are cordially invited to attend the PhD defense of Quentin Dufour that will be held online on February 24 at 4pm.

The defense can be followed from the player below:

Jury members :

  • Ian GOLDBERG, Full Professor, Université de Waterloo, Canada
  • Rüdiger KAPITZA, Full Professor, Université de Braunschweig, Allemagne
  • Julia LAWALL, Senior Research Scientist, INRIA Paris
  • Anne-Marie KERMARREC, Full Professor, Ecole Polytechnique Fédérale de Lausanne, Suisse
  • Isabelle PUAUT, Full Professor, Univ. Rennes 1
  • Alain TCHANA, Full Professor, ENS Lyon
  • Davide FREY, Research Scientist, INRIA Rennes
  • David BROMBERG, Full Professor, Univ. Rennes 1

Title: High-throughput real-time onion networks to protect everyone’s privacy

Abstract :

From electoral interference to manipulation, privacy issues, or surveillance, gain more and more traction in the public debate. Surveillance is possible thanks to unlimited data collection on human behaviors, often referred as traces. We explore how anonymity networks could extend people protection against surveillance by preventing traces collection. We observed that the most used network, Tor, is also the one that features the best performances. Tor still suffers from limitations and often restrained to anonymous web browsing. To widen Tor usages, from VoIP to file transfer including group communications, we leveraged two main concepts: multipath and gossip. Donar is a VoIP client running over legacy Tor meeting industry standards for calls quality thanks to a real-time multipath algorithm. Safe is a file transfer solution that enable contribution to the network with home devices thanks to a fault tolerance mechanisms to provide the required bandwidth. CHEPIN frees group communication from servers thanks to a gossip protocol optimized with network coding. With our contributions, we aim to pave the way to democratizing anonymity networks and help people protect themself against surveillance.

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