Who am I?

I am a Professor (chargé de cours) at Université libre de Bruxelles, and a member of the ULB Cybersecurity Research Center. I am also an Associate Professor at the University of Birmingham's School of Computer Science, Security and Privacy research group, and a Visiting Research Fellow at Oxford's Mathematical Institute, where I helped founding the Cryptography group.

I am currently in charge of the Programming Languages 1 course and part of the Cryptanalysis and Mathematical Cryptology course at ULB. Previously I taught Secure Programming and the Advanced Cryptography modules at Birmingham, both of them part of the Master in Cybersecurity. I also taught an Advanced Cryptography reading course for the Master in Mathematics and Foundations of Computer Science at Oxford.

I am always willing to supervise good and well-motivated students at undergraduate, master and PhD levels. Have a look at previous student projects and feel free to contact me to learn more about potential research projects.

Previously I was a Research Fellow at the University of Oxford's Mathematical Institute, and prior to that I worked at Université catholique de Louvain's Department of Electrical Engineering and at University College London's Computer Science Department.

• Paper Computing the endomorphism ring of a supersingular elliptic curve from a full rank suborder (with Mingjie Chen) accepted at EUROCRYPT 2025
• Paper Improved algorithms for finding fixed-degree isogenies between supersingular elliptic curves (with Benjamin Bencina, Péter Kutas, Simon-Philipp Merz, Miha Stopar, Charlotte Weitkämper) accepted at CRYPTO 2024
• Paper Solving the Tensor Isomorphism Problem for special orbits with low rank points: Cryptanalysis and repair of an Asiacrypt 2023 commitment scheme. (with Valerie Gilchrist, Laurane Marco, Gang Tang) accepted at CRYPTO 2024
• I will be serving as PC member for Africacrypt 2025 and Asiacrypt 2025 conferences.
• SQISign digital signature algorithm submitted to NIST. See original paper and NIST submission !
• Isogeny-based cryptography workshop was organized in Banff and Bristol in 2023 together with Victoria De Quehen, Chloe Martindale and Kristin Lauter
• ARES PFS project aimed at building a master program and research capacities in cybersecurity in Cameroon (together with local partner Emmanuel Fouotsa) started in September 2023, and will last for five years. Get in touch if you would like to be involved!
• I have been awarded an EPSRC fellowship to work on the cryptanalysis of post-quantum protocols. Postdoctoral and PhD positions will be available; please get in touch if you are interested!
• See here for most recent preprints
  
  

Contact data
Office 237
School of Computer Science
University of Birmingham
University Rd W
Birmingham B15 2TT
United Kingdom

Contact data in Oxford: see here