Published several papers, including 'Ciphertext-ciphertext matrix multiplication: fast for large matrices' (Eurocrypt 2025) and 'Plaintext-ciphertext matrix multiplication and FHE bootstrapping: fast and fused' (Crypto 2024, co-authored with Youngjin Bae, Jung Hee Cheon, Guillaume Hanrot, and Damien Stehlé).
Research Experience
Delivered lectures in the ENS de Lyon M2 course 'Privacy-preserving Machine Learning with Homomorphic Encryption' (Fall 2025); gave a tech talk on ciphertext-ciphertext matrix multiplication at the FHE.org Meetup (Jun 2025); presented a paper 'Ciphertext-Ciphertext Matrix Multiplication: Fast for Large Matrices' at Eurocrypt 2025 (May 2025), which is his first single-authored paper; gave a seminar on plaintext-ciphertext matrix multiplication at École Polytechnique (Feb 2025); delivered a 3-week lecture for FHE School 2025 at Seoul National University (Jan 2025); delivered sections on homomorphic linear algebra as part of the 'Fully Homomorphic Encryption' course (Fall 2024, M2) at ENS de Lyon (Dec 2024); started working as a full-time researcher at CryptoLab in Lyon, France (Sep 2024).
Education
Obtained a Ph.D. from the Department of Mathematical Sciences at Seoul National University, advised by Prof. Jung Hee Cheon.
Background
A full-time researcher at CryptoLab in Lyon, France, with a broad range of interests in cryptography, focusing on homomorphic encryption and its applications.