Director of research at Inria (French National Institute for Research in Computer Science and Control), he obtained a thesis in computer science in 1993 and the accreditation to direct research in 2007. He supervises doctoral and post-doctoral students at the École Polytechnique. With Julien Prat, he is responsible for the Blockchain and B2B platform chair, supported by CapGemini, NomadicLabs, and the Caisse des dépôts.
He supervised 13 PhD students in computer science. He is the coinventor of the FSB hash function.
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