I am a cryptography researcher at PQShield. Before that, I was an engineer at Thales. Still before it, I completed a PhD at the École Normale Supérieure. My main fields of interest are post-quantum cryptography and discrete algorithms, however I am open to most topics related to cryptography.

PQShield is hiring!
  • Have a look at the careers webpage on PQShield's website.
  • We are also looking for excellent permanent and/or post-doctoral researchers to work with our research team. Contact me directly if you are interested.
  • I am also looking for talented interns (M2 or PhD students). Send me an email with your CV if you are interested, no middleman please.

I no longer take journal reviews. I take few conference subreviews, but I accept invitations to conference program committees.


PhD Thesis

Talks (since 2017)


In 2016, NIST launched a standardization process to replace the current public-key cryptographic algorithms with post-quantum solutions. In July 2022, Falcon was selected as one of the three signature standards. Out of the three standards, Falcon is the one with the lowest communication cost (added sizes of a public key and a signature).

Falcon is a joint work with a team of talented cryptographers, cryptanalysts and implementers: Pierre-Alain Fouque, Jeffrey Hoffstein, Paul Kirchner, Vadim Lyubashevsky, Thomas Pornin, Thomas Ricosset, Gregor Seiler, William Whyte and Zhenfei Zhang.



  • Laurent Castelnovi - Université de Limoges
    Master Internship 2017 -  
  • Mélissa Rossi - Thales / École Normale Supérieure / ANSSI
    PhD 2017-2020
  • Marc Abboud - École Normale Supérieure
    Master Internship 2019
  • Maxime Plançon - École Normale Supérieure de Cachan
    Master Internship 2019 + ARPE 1-Year Internship 2019-2020
  • Mario Marhuenda Beltran - École normale supérieure Paris-Saclay
    Master Internship 2022
  • Guilhem Niot - École normale supérieure de Lyon
    PhD Student 2023-2025, co-supervised with Pierre-Alain Fouque