Gyeongwon Cha, Dongjin Park (Cha and Park are co-first authors), Yejin Choi, Eunji Park*, and Joon-Woo Lee*, "Privacy-Preserving Real-Time Emotion Recognition using Homomorphic Encryption," UbiComp 2026 (IMWUT), September 2025 (Top-tier HCI conference)

Dongjin Park, Eunsang Lee*, and Joon-Woo Lee*, "Powerformer: Efficient and High-Accuracy Privacy-Preserving Language Model with Homomorphic Encryption," ACL 2025 (main), July 2025 (Top-tier NLP conference)  

Seonhong Min, Joon-Woo Lee*, and Yongsoo Song*, "Enhanced CKKS Bootstrapping with Generalized Polynomial Composites Approximation," AsiaCCS 2025, August 2025 (Top-tier security conference)

Joon-Woo Lee, Eunsang Lee*, Young-Sik Kim*, Jong-Seon No, "Rotation Key Reduction for Client-Server Systems of Deep Neural Network on Fully Homomorphic Encryption," ASIACRYPT 2023, December 2023 (Top-tier cryptography conference)

Eunsang Lee, Joon-Woo Lee*, Junghyun Lee, Yongjune Kim, Young-Sik Kim, Jong-Seon No, and Wooseok Choi, "Low-complexity deep convolutional neural networks on fully homomorphic encryption using multiplexed parallel convolutions," ICML 2022, July 2022. (Top-tier ML conferenece)

Yongwoo Lee, Joon-Woo Lee, Young-Sik Kim*, Yongjune Kim, Hyungchul Kang, and Jong-Seon No, "High-precision bootstrapping for approximate homomorphic encryption by error variance minimization," EUROCRYPT 2022, June 2022 (Top-tier cryptography conference)

Joon-Woo Lee*, Eunsang Lee, Yongwoo Lee, Young-Sik Kim, and Jong-Seon No, "High-precision bootstrapping of RNS-CKKS homomorphic encryption using optimal minimax polynomial approximation and inverse sine function," EUROCRYPT 2021, October 2021 (Top-tier cryptography conference)

Joon-Woo Lee, Jae-Won Kim*, and Jong-Seon No, "Improvement of extended least difference greedy clique-cover algorithm for index coding," ICTC 2018, October 2018.

Hasung Yeo and Joon-Woo Lee*, "Norm-Based Outlier Filtering and Consensus Aggregation for Robust Federated Learning", IEEE Access, June 2025

Junghyun Lee, Eunsang Lee*, Joon-Woo Lee*, Yongjune Kim, Young-Sik Kim and Jong-Seon No, "Precise Approximation of Convolutional Neural Networks for Homomorphically Encrypted Data," IEEE Access, June 2023.

Zahyun Koo, Joon-Woo Lee*, Jong-Seon No*, and Young-Sik Kim, "Key Reduction in Multi-Key and Threshold Multi-Key Homomorphic Encryptions by Reusing Error," IEEE Access, May 2023.

Eunsang Lee, Joon-Woo Lee*, Young-Sik Kim, and Jong-Seon No, “Minimax approximation of sign function by composite polynomial for homomorphic comparison,” IEEE Transactions on Dependable and Secure Computing, 19(6), pp. 3711-3727, 2022 (IF : 6.791, JCR 2021 Top 8.6%).

Joon-Woo Lee(co-first with Hyungchul Kang), Hyungchul Kang, Yongwoo Lee, Wooseok Choi, Jieun Eom, Maxim Deryabin, Eunsang Lee, Junghyun Lee, Donghoon Yoo, Young-Sik Kim*, and Jong-Seon No, "Privacy-preserving machine learning with fully homomorphic encryption for deep neural network," IEEE Access, March 2022.

Eunsang Lee, Joon-Woo Lee, Young-Sik Kim*, and Jong-Seon No, "Optimization of homomorphic comparison algorithm on RNS-CKKS scheme," IEEE Access, March 2022.

Zahyun Koo, Yongwoo Lee, Joon-Woo Lee, Young-Sik Kim*, and Jong-Seon No, “Improved reduction between SIS problems over structured lattices,” IEEE Access, November 2021.

Joon-Woo Lee, Young-Sik Kim*, and Jong-Seon No, “Analysis of modified shell sort for fully homomorphic encryption,” IEEE Access, September 2021.

Yongwoo Lee, Joon-Woo Lee, Young-Sik Kim*, and Jong-Seon No, “Near-optimal polynomial for modulus reduction using L2-norm for approximate homomorphic encryption,” IEEE Access, August 2020.

Gyeongwon Cha, Dongjin Park, and Joon-Woo Lee*, "Improved Radix-based Approximate Homomorphic Encryption for Large Integers via Lightweight Bootstrapped Digit Carry", Cryptology ePrint Archive, 2025/1740, October 2025.

Dongjin Park, Hasung Yeo, and Joon-Woo Lee*, "OvA-LP: A Simple and Efficient Framework for Federated Learning on Non-IID Data", submitted.

Qiang Liu, JaeYoung Bae, and Joon-Woo Lee*, "LeanPSU: Leakage-Free, Low-Overhead Private Set Union for Balanced and Unbalanced Scenarios", submitted.

Qiang Liu and Joon-Woo Lee*, "Efficient Multi-party Private Set Union Resistant to Maximum Collusion Attacks", Cryptology ePrint Archive, 2024/2096, May 2025.

Joohee Lee and Joon-Woo Lee (equally contributed), "Forensic-Enabled Homomorphic Encryption", Cryptology ePrint Archive, 2024/1689, October 2024. 

Byeong-Seo Min and Joon-Woo Lee*, "Low-Latency Linear Transformations with Small Key Transmission for Private Neural Network on Homomorphic Encryption," Cryptology ePrint Archive, 2024/883, June 2024.

Junghyun Lee, Eunsang Lee, Young-Sik Kim, Yongwoo Lee, Joon-Woo Lee*, Yongjune Kim*, Jong-Seon No, "Optimized Layerwise Approximation for Efficient Private Inference on Fully Homomorphic Encryption," arXiv preprint arXiv:2310.10349, Oct 2023.