Serge Fehr

Senior Researcher, Cryptology Group, CWI Amsterdam

Professor, Mathematical Institute, Leiden University

Serge Fehr is a scientific staff member of the Cryptology Group at CWI, the Dutch Center for Mathematics and Computer Science in Amsterdam, and a (part-time) full professor in the Faculty of Science at Leiden University. He participates in AMSec, the Amsterdam Cyber Security Center, and he is supported by NWO, the Dutch Research Council, and by DIAMANT, the Dutch national mathematics research network on Discrete, Interactive & Algorithmic Mathematics, Algebra & Number Theory.

Research interest: Foundations of cryptology, information-theoretic and (post-)quantum cryptography, zero-knowledge proofs, and secure multiparty computation.

Current and upcoming activities: Program committee co-chair of EUROCRYPT 2025. Editorial board member of Journal of Cryptology. Steering committee member of the workshop series Beyond IID In Information Theory. Work package leader in the NWO NWA HAPKIDO consortium. Co-organizer of the national Symposium Series on Post-Quantum Cryptography.

Recent publications:
 J. Don, S. Fehr, Y.H. Huang, J.J. Liao, P. Struck. Hide-and-Seek and the Non-Resignability of the BUFF Transform. In TCC 2024.
 J. Don, S. Fehr, Y.H. Huang, P. Struck. On the (In)Security of the BUFF Transform. In CRYPTO 2024.
 T. Attema, S. Fehr, N. Resch. Fiat-Shamir Transformation of Multi-Round Interactive Proofs. In TCC 2023.
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