Benjamin Wesolowski

Benjamin Wesolowski is a CNRS researcher (chargé de recherche) at the Unité de Mathématiques pures et appliquées (UMPA), École Normale Supérieure de Lyon (ENS Lyon), France. He previously held a CNRS researcher position at the Institut de Mathématiques de Bordeaux (IMB) and completed postdoctoral work at Centrum Wiskunde en Informatica (CWI) in the Netherlands. His research lies at the intersection of mathematics and cryptography, particularly in number theory and algebraic geometry.

• PhD, EPFL (2018)
• Master’s in Mathematics, EPFL (2014)
• Bachelor’s in Mathematics, EPFL (2012)
• Habilitation (HDR), ENS Lyon (2024)

His research focuses on cryptologic algorithms rooted in number theory and algebraic geometry, especially isogeny-based cryptography, post-quantum signatures, and verifiable delay functions. He explores the structure of isogeny graphs of abelian varieties and their applications to blockchain and randomness generation. His work combines deep theoretical mathematics with practical cryptographic design.

The most recent articles highlight a consistent trend in isogeny-based cryptography, particularly in constructing compact and secure post-quantum signature schemes like SQISign and PRISM. His contributions also extend to cryptanalysis, as seen in the key recovery attack on SIDH, and foundational work on verifiable delay functions. These works span top-tier venues such as Eurocrypt, Asiacrypt, and PKC, reflecting his leadership in advancing both theoretical and applied aspects of modern cryptography.

• CNRS 2025 Bronze Medal
• ERC Starting Grant AGATHA CRYPTY (2023)
• Secretary of the IACR (elected, 2023)
• Best paper award PKC 2025
• Best paper award Eurocrypt 2024
• Top-3 paper Eurocrypt 2023
• Best paper award Asiacrypt 2020
• Best young researcher paper Eurocrypt 2019

Benjamin Wesolowski has been supported by competitive grants including the ERC Starting Grant AGATHA CRYPTY. He has advised students during his tenure at EPFL as a teaching assistant and likely through doctoral supervision, though specific advisees are not listed. His academic service includes being elected Secretary of the IACR, a major recognition in the cryptology community. He has also received fellowships such as the Doctoral EDIC Fellowship and prizes including the Kudelski Prize and EPFL Prize.

His research is conducted primarily within the Unité de Mathématiques pures et appliquées (UMPA) at ENS Lyon, a leading center for mathematical research in France. He was part of the Cryptology Group at CWI under Ronald Cramer during his postdoc and has collaborated extensively with institutions such as EPFL, UC Berkeley, and IMB. His work often bridges theoretical mathematics and practical cryptographic implementation.