Cyprien Delpech de Saint Guilhem


I research various aspects of provably secure public-key cryptography such as models of security and protocol design. Among others, I have worked on protocols for zero-knowledge proofs, oblivious transfer and authenticated key exchange using a range of assumptions and frameworks, including MPC-in-the-Head, supersingular isogenies and lattice-based cryptography.


After my Baccalaureate in France, I obtained a BSc in Mathematics from Imperial College London and then a MSc in Mathematics and Foundations of Computer Science from the University of Oxford. It was my third year undergraduate project and the cryptography and algebraic number theory courses of my Master’s degree that led me to embark on a PhD in Cryptography under the supervision of Prof Nigel Smart. I began my PhD at the University of Bristol in October 2016 and, from January 2018 onwards, I was jointly affiliated with the COSIC research group of the KU Leuven. After obtaining my PhD in March 2021, I am now a post-doctoral Research Associate at COSIC.