I am a research engineer at Orange Innovation in the Applied Cryptography Group. I am working on post-quantum cryptography, and more precisely on designing advanced lattice-based signature schemes for privacy applications. Feel free to check out my quick introduction video on lattice cryptography.

I completed my PhD on the subject in June 2024. It was done in collaboration with the CAPSULE team at INRIA/IRISA in Rennes, and under the supervision of Adeline Roux-Langlois (IRISA), Olivier Sanders (Orange Labs) and Pierre-Alain Fouque (IRISA).

Before that, I was a research intern (Jan. - Jul. 2020 & Apr. - Sep. 2021) supervised by Adeline Roux-Langlois. I was working on the computational assumptions underlying lattice-based cryptosystems, namely the Module Learning With Errors problem.

In April 2021, I completed my master of engineering in the cybersecurity specialization at Centrale Paris. From July 2019 to December 2019, I worked as a cybersecurity engineering intern at Thales LAS on risk analysis and cryptography applied to critical industrial systems. Prior to that, I visited Carnegie Mellon University as an exchange student in the Electrical and Computer Engineering Department from January 2019 to June 2019.
Before that, in 2017, I completed my two years of preparatory classes in Mathematics and Physics at Lycée Jacques Amyot. My thesis project was on the theory and implementation of the signature scheme ECDSA.

Publications

2024

2023

2022

2021

2020

Reviewing

Eurocrypt’22, ACISP’22, CCS’22, PKC’23, Eurocrypt’23, CCS’23, Eurocrypt’24

Talks

Talks

  • 13/06/2024: Phoenix: Hash-and-Sign with Aborts from Lattice Gadgets. At PQCrypto 2024, Oxford, United Kingdom.

  • 18/10/2023: Lattice Signature with Efficient Protocols, Application to Anonymous Credentials. Journées C2 2023, Najac, France.
  • 02/10/2023: Lattice Signature with Efficient Protocols, Application to Anonymous Credentials. At Caen University, NormaStic Seminar, Caen, France.
  • 22/08/2023: Lattice Signature with Efficient Protocols, Application to Anonymous Credentials. At Crypto 2023, Santa Barbara, California, United States.
  • 01/06/2023: Lattice Signature with Efficient Protocols, Application to Anonymous Credentials. At IRISA, Capslock Seminar, Rennes, France.
  • 13/03/2023: On the Secret Distributions in Module Learning With Errors. At Florida Atlantic University, Crypto Café Seminars (online).
  • 27/02/2023: Lattice Signature with Efficient Protocols, Application to Anonymous Credentials. At Aarhus University, Aarhus Crypto Seminar, Aarhus, Denmark.
  • 12/12/2022: Entropic Hardness of Module-LWE from Module-NTRU. At Indocrypt 2022, Kolkata, India.
  • 11/10/2022: On the Hardness of Module Learning With Errors with Short Distributions. At Caen University, Algo Seminar, Caen, France.
  • 11/04/2022: Entropic Hardness of Module-LWE from Module-NTRU. At Journées C2 2022, Hendaye, France.
  • 19/05/2021: On the Hardness of Module-LWE with Binary Secret. At RSA Conference 2021 - Cryptographer’s Track (online).

Dissemination

Thesis

Design of Advanced Post-Quantum Signature Schemes. Defended on June 18th, 2024.

Teaching

2023

  • Lattice-Based Cryptography, Rennes 1 University, CyberSchool
    Exercise Sessions and Lectures in lattice-based cryptography for Master 2 level students from Rennes 1 University and CyberSchool.

2022

  • Lattice-Based Cryptography, Rennes 1 University, CyberSchool
    Exercise Sessions in lattice-based cryptography for Master 2 level students from Rennes 1 University and CyberSchool.

2018

  • Information Systems and Programming, CentraleSupélec
    Co-construction of the course as part of the first year curriculum of CentraleSupélec engineering school. Practical exercises in information systems and networks and Python programming labs. Introduction to information security.

Contact

Corentin JEUDY
Orange Innovation
4 rue du Clos Courtel
35510 Cesson-Sévigné
France

Affiliation: Orange Innovation, Applied Crypto Group

Email: corentin • jeudy [at] orange • com