Christian Mouchet

About me

Hey! I'm Christian, a PhD student at EPFL, in the Security and Privacy Engineering Laboratory.

I'm interested in cryptographic protocols that can be implemented, deployed and used in practice. My recent research focuses on multiparty homomorphic encryption schemes and their applications to secure multiparty computation.

If you want to know more, here are my CV and my LinkedIn profile.

Activities

My most notable project is to co-develop and maintain Lattigo, a multiparty homomorphic encryption library in Go. Lattigo implements the latest generation of homomorphic encryption schemes and their multiparty variants.

Publications

• PELTA – Shielding Multiparty-FHE against Malicious Adversaries
  Sylvain Chatel, Christian Mouchet, Ali Utkan Sahin, Apostolos Pyrgelis, Carmela Troncoso, and Jean-Pierre Hubaux
  ACM CCS 2023 (to appear)
  [eprint]
• An Efficient Threshold Access-Structure for RLWE-Based Multiparty Homomorphic Encryption
  Christian Mouchet, Elliott Bertrand, and Jean-Pierre Hubaux
  JOURNAL OF CRYPTOLOGY 2023
  [eprint]
• Multiparty homomorphic encryption from ring-learning-with-errors
  Christian Mouchet, Juan Troncoso-Pastoriza, Jean-Philippe Bossuat, and Jean-Pierre Hubaux
  PETS 2021
  [eprint]
• Efficient bootstrapping for approximate homomorphic encryption with non-sparse keys
  Jean-Philippe Bossuat, Christian Mouchet, Juan Troncoso-Pastoriza, and Jean-Pierre Hubaux
  EUROCRYPT 2021
  [eprint]
• Lattigo: A multiparty homomorphic encryption library in Go
  Christian Mouchet, Jean-Philippe Bossuat, Juan Troncoso-Pastoriza, and Jean-Pierre Hubaux
  WAHC 2020
  [paper]
• UnLynx: A Decentralized System for Privacy-Conscious Data Sharing
  David Froelicher, Patricia Egger, João Sá Sousa, Jean Louis Raisaro, Zhicong Huang, Christian Mouchet, Bryan Ford, and Jean-Pierre Hubaux
  PETS 2017
  [paper]

Talks

• Multiparty Homomorphic Encryption: from Theory to Practice
  
  • Invited talk, Vector Institute, Toronto – 02 October 2023
  • Invited talk, MIT, Boston – 11 October 2023
  • Invited talk, Hasso Plattner Institute, Potsdam – 22 September 2023
• Computing across Trust Boundaries with Multiparty Homomorphic Encryption and the Lattigo Library
  
  • Workshop on Privacy Preserving systems, software and tools, Roma Tre University – 24 October 2022
  • Guest Lecture in Advanced Topics in Computer and Network Security, University of Padova – 27 October 2022
• An Efficient Threshold Access-Structure for RLWE-Based Multiparty Homomorphic Encryption
  
  • PrivaSec Seminar, EPFL – 15 December 2021
• Multiparty Homomrphic Encryption from Ring-Learning-with-Errors
  
  • PETS'21 – Privacy Enhancing Technologies Symposium, Virtual – 15 July 2021
• Lattigo: a Multiparty Homomorphic Encryption Library in Go
  
  • WAHC'20 – Workshop on Encrypted Computing & Applied Homomorphic Cryptography, Virtual – 15 December 2020