Tancrède Lepoint works as Applied Scientist in the AWS Privacy Engineering team. He is a cryptographer, specialized in privacy-enhancing technologies, lattice-based cryptography, post-quantum cryptography, homomorphic encryption, and differential privacy.
He is a director of the International Association for Cryptologic Research (2018-2023) and co-editor of the Cryptology ePrint Archive since 2016. He worked at Apple (2021-2022), Google (2018-2021), SRI International (2016-2018), and CryptoExperts (2011-2016). He holds a Ph.D. in Computer Science from École Normale Supérieure and University of Luxembourg.
Tancrède co-authored the two post-quantum cryptographic primitives (CRYSTALS-Kyber and CRYSTALS-Dilithium) selected for standardization by NIST. He drove the cryptographic deployment of the Exposure Notifications Privacy-preserving Analytics within Google, a differentially-private multiparty computation system based on the private measurement system Prio. He also designed the multi-server verification flow for Exposure Notifications in the US. He worked on lightweigth anonymous credentials (Privacy-Pass, trust tokens) and specializes in homomorphic encryption.