Sylvain Chatel

Sylvain Chatel

Privacy and Applied Cryptography Researcher

Security and Privacy Engineering Laboratory, EPFL


I am a privacy and applied cryptography researcher. I am currently a member of the Security and Privacy Engineering Laboratory (SPRING) at the Ecole Polytechnique Fédérale de Lausanne (EPFL) in Switzerland.

I completed my PhD at EPFL where I work under the supervision of Prof. Carmela Troncoso and Prof. Jean-Pierre Hubaux.

My research interests revolve around the topic of applied cryptography for security and privacy. In particular, how to combine zero-knowledge proofs and homomorphic encryption to enable security without compromising privacy and utility.

  • Security and Privacy
  • Applied Cryptography
  • Homomorphic Encryption
  • Zero-knowledge Proofs
  • Ph.D. in Computer Science

    Ecole Polytechnique Federale de Lausanne, EPFL

  • MSc in Electrical and Computer Engineering

    Georgia Institute of Technology

  • MSc and BSc in Engineering

    CentraleSupelec - Supelec


(2023). PELTA -- Shielding Multiparty-FHE against Malicious Adversaries. to appear at CCS 2023.

PDF Cite Project

(2022). Verifiable Encodings for Secure Homomorphic Analytics. arXiv.

PDF Cite Project

(2021). Privacy and Integrity Preserving Computations with CRISP. In the 30th USENIX Security Symposium, 2021.

PDF Cite Code Project Poster Slides Video

(2021). SoK: Privacy-Preserving Collaborative Tree-based Model Learning. In Proceedings on Privacy Enhancing Technologies, Vol. 2021, No. 3, April 2021.

PDF Cite Project Poster Video

(2020). Decentralized Privacy-Preserving Proximity Tracing. In arXiv preprint.

PDF Cite Project