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Serge Fehr

Senior Researcher, Cryptology Group, CWI Amsterdam

Professor, Mathematical Institute, Leiden University

CWI  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. Program committee area chair of EUROCRYPT 2024. Editorial board member of Journal of Cryptology and of IEEE Transactions on Information Theory. 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:
 T. Attema, S. Fehr, N. Resch. Fiat-Shamir Transformation of Multi-Round Interactive Proofs. In TCC 2023.
 M. Barbosa, et al. Fixing and Mechanizing the Security Proof of Fiat-Shamir with Aborts and Dilithium. In CRYPTO 2023.
 S. Fehr and Y.H. Huang On the Quantum Security of HAWK. In PQCRYPTO 2023.