Teaching
-
ENS de Lyon
- (Fall 2026, Fall 2025) Privacy-preserving Machine Learning with Homomorphic Encryption (M2)
- Co-instructor with Guillaume Hanrot.
- (Fall 2024) Fully Homomorphic Encryption (M2)
- Co-instructor with Alain Passelègue and Damien Stehlé.
-
FHE School
Organized by Seoul National University and CryptoLab
Jan 2025
- Delivered 9 invited lectures on fully homomorphic encryption over a 3-week program.
-
Seoul National University (TA)
- (Spring 2023) Computational Number Theory
- (Spring 2021) Number Theory
- (Spring 2020 – Spring 2023) Differential and Integral Calculus
Selected Talks
-
THED: Threshold Dilithium from FHE [C09]
- (Sep 2026) Invited talk at Korea University, Korea
- (Sep 2026) Invited talk at Sungshin Women's University, Korea
- (Jun 2026) Invited talk at PACOH Workshop, Korea
- (Feb 2026) Invited talk at Seoul National University, Korea
-
Ciphertext-Ciphertext Matrix Multiplication: Fast for Large Matrices [C06]
- (Sep 2026) Guest lecture for Topics in Applied Mathematics at Seoul National University, Korea
- (Sep 2026) Invited talk at Dongguk University, Korea
- (Nov 2025) Invited talk at NTNU, Norway
- (Jun 2025) Invited talk at FHE.org Meetup, Virtual [slides] [video]
- (May 2025) EUROCRYPT 2025, Madrid, Spain [slides] [video]
- (Feb 2025) Invited talk at Seoul National University, Virtual
-
Plaintext-Ciphertext Matrix Multiplication and FHE Bootstrapping: Fast and Fused [C05]
- (Feb 2025) Invited talk at École polytechnique, France
- (Aug 2024) CRYPTO 2024, UC Santa Barbara, USA [slides] [video]
-
HERMES: Efficient Ring Packing using MLWE Ciphertexts and Application to Transciphering [C03]
- (Dec 2023) Invited talk at Dongguk University, Korea
- (Aug 2023) CRYPTO 2023, UC Santa Barbara, USA [slides] [video]
-
Tree-based Lookup Table on Batched Encrypted Queries using Homomorphic Encryption [J04]
- (Apr 2022) 2022 KMS Spring Meeting, Virtual
-
Efficient Homomorphic Evaluation on Large Intervals [J03]
- (Oct 2020) 2020 KMS Fall Meeting, Virtual
-
Towards a Practical Cluster Analysis over Encrypted Data [C01]
- (Oct 2019) 2019 KMS Fall Meeting, Hong-ik University, Korea
- (Aug 2019) SAC 2019, University of Waterloo, Canada [slides]
Honors & Awards
-
Korea Cryptography Contest
National Security Research Institute
- (Nov 2024) Special Prize for [C07]
- (Oct 2023) Best Award for [C03]; Special Prize for [M02]
- (Oct 2022) Encouragement Prize for [M01]
- (Oct 2020) Excellence Award for [J03]
-
BK 21+ Scholarship
Ministry of Education of Korea
Mar 2020 – Aug 2023
-
First Place Prize, iDASH Genomic Data Privacy and Security Protection Competition
National Institutes of Health
Dec 2020
- Track I: Secure multi-label Tumor classification using Homomorphic Encryption
-
Award for Excellence in Teaching
Seoul National University
Sep 2020
- For teaching Differential and Integral Calculus
-
The Presidential Science Scholarship
Korea Student Aid Foundation
Mar 2013 – Feb 2019
Academic Service
-
Journal Reviewer
- Journal of Cryptology (JoC); Designs, Codes and Cryptography (DCC); Information Sciences; IEEE Access
-
Conference External Reviewer
- EUROCRYPT (2027, 2026, 2025, 2024, 2023); PKC (2027); ASIACRYPT (2026, 2025, 2022, 2021); CRYPTO (2026); STOC (2026); TCC (2025); PQCrypto (2023); FHE.org (2022); ANTS (2020)
