Pierre Pébereau
pierre.pebereau[at]lip6.fr
26-00/326
GitHub
Hi ! I am a PhD student at LIP6 under the supervision of Simon Abelard and Mohab Safey el Din.
My research interests are efficient algorithms for mathematical problems.
Currently, I study the cryptanalysis of post-quantum cryptographic algorithms, in particular multivariate signature
schemes, using computer algebra tools.
I have shown the insecurity of some NIST candidates by demonstrating practical attacks that
run in seconds on a laptop, and more theoretical results that improve attacks by exponential factors.
All the algorithms I design are implemented and tested, with practical and reproducible results.
You can find my resume here.
Software
- Key recovery algorithm for UOV and VOX based on singular points. (SageMath) [GitHub]
- Polynomial-time key recovery algorithm from one vector for UOV. (SageMath) [GitHub]
- Branch-and-bound algorithm for the computation of the pathlength of a graph. (Cython) [GitHub]
- Implementation with A. Barreaux of Weisfeiler-Lehman Graph Kernels in the scikit-network Python package. (Cython) [GitHub]
Publications
Proceedings of international conferences
- Pierre Pébereau. Singular points of UOV and VOX. Eurocrypt 2025, Madrid. [eprint] [code] [slides] [video]
- Pierre Pébereau. One vector to rule them all: Key recovery from one vector in UOV schemes. PQC 2024, Oxford. [eprint] [code] [slides]
- Eric Sageloli, Pierre Pébereau, Pierrick Méaux, Céline
Chevalier. Shorter and Faster Identity-Based Signatures with Tight
Security in the (Q)ROM from Lattices. ACNS 2023 [eprint]
Pre-prints
- Pierre Pébereau. Subfield attack: leveraging composite-degree extensions in the Quotient Ring transform. IACR eprint archive, February 2024 [eprint]
Talks
Invited talks
- Mathematics of post-quantum cryptanalysis, August 2024, Budapest. [slides]
- SIAM AG 2023, Mini-symposium "Applications of Algebraic Geometry to Post-Quantum Cryptology", July 2023, Eindhoven. [eprint] [slides]
Talks at national events
- Journées codes et cryptographie, 2025 [slides]
- Journées nationales du calcul formel, 2025 [slides]
- Journée des doctorants, 2024, Thales [slides]
- Journées nationales du calcul formel, 2024 [slides]
Invitations and seminars
- Séminaire Cryptis, June 17, 2025, Limoges.
- Séminaire cryptographie de l'ANSSI, May 28, 2025, Paris. [slides]
- Séminaire GAE, April 25, 2025, Rennes. [slides]
- ALMASTY Seminar, January 19, 2024, Paris. [slides]
Student supervision
- M1 Master thesis at Sorbonne Université, Master CCA - "Study of a post-quantum signature scheme: OV hat plus." 2024/2025
Teaching
- M2 Polynomial System Solving: Introduction to multivariate cryptography at Sorbonne Université (4h). 2024-2025
- L1 Introduction to programming at Sorbonne Université (~35h). 2024-2025
- M1 Computer Algebra at Sorbonne Université (~70h). 2023-2025
- L3 Networks at Sorbonne Université (~35h). 2023-2024
- L3 Cryptology at Sorbonne Université (~35h). 2022-2023
- MPSI khôlles at Lycée Janson-de-Sailly (~60h). (2020-2022)