I'm really interested in solving real-world security and privacy problems through mathematical and cryptographic tools. The following topics are my current interests.

Cryptography

• • Privacy Enhancing Technologies (in a cryptographic approach)

  • Devising Cryptographic Tools for Real-valued Fuzzy Data

Secure AI & Biometrics

• • Security Analysis on Deep Learning-based Face Recognition Systems

  • Biometric Template Protection (in a cryptographic approach)

  • Adversarial Machine Learning (in theoretical perspective)

Miscellaneous

• • Computational Number Theory & Algorithms

  • Complexity Theory

Dec, 2025

1. One paper has been accepted to IEEE T-BIOM

1. • • Towards Certifiably Robust Face Recognition: Analyses and Improvements

     • Seunghun Paik, Dongsoo Kim, Chanwoo Hwang, Sunpill Kim, and Jae Hong Seo

Nov, 2025

1. One paper has been accepted to IEEE TDSC

1. • • On the Reversibility of Locality-Sensitive Hashing-based Biometric Template Protections

     • Seunghun Paik, Chanwoo Hwang, Sunpill Kim, and Jae Hong Seo

2. I will deliver a talk at the Department of Mathematics Day @ Hanyang University. 

   • • From Math to Cryptology: My journey in HUCC and C&A Lab

3. One paper has been accepted to ASIACCS 2026. See you in Bangalore :) 

   • • Scalable Private Set Intersection over Distributed Encrypted Data

     • Seunghun Paik, Nirajan Koirala, Jack Nero, Hyunjung Son, Yunki Kim, Jae Hong Seo, and Taeho Jung

Oct, 2025

1. One paper has been accepted to NDSS 2026.

   • • Select-Then-Compute: Encrypted Label Selection and Analytics over Distributed Datasets using FHE 

     • Nirajan Koirala, Seunghun Paik, Sam Martin, Helena Berens, Tasha Januszewicz, Jonathan Takeshita, Jae Hong Seo, and Taeho Jung 

Sep, 2025

1. One paper has been accepted to IEEE ICTC.

1. • • A Survey on Fuzzy Private Set Intersection Protocols

     • Yunki Kim, Hyunjung Son, Seunghun Paik, and Jae hong Seo

2. One paper has been accepted to NeurIPS 2025. See you in San Diego :)

   • • Non-Adaptive Adversarial Face Generation

     • Sunpill Kim, Seunghun Paik, Chanwoo Hwang, Minsu Kim, and Jae Hong Seo

3. I will receive the following awards in the 2025 National Cryptographic Technology Contest (Applied Cryptography Track)

   • • (Excellence Award) Scalable Private Membership Test over Distributed and Encrypted Data.

     • (Special Award) Non-Adaptive Adversarial Face Generation.

     • (Special Award) Score Knows Bob's Voice: Non-Adaptive Speaker Impersonation Attack.

July, 2025

1. Two papers have been uploaded to arXiv.

   • • Non-Adaptive Adversarial Face Generation (https://arxiv.org/abs/2507.12107)

     • Sunpill Kim, Seunghun Paik, Chanwoo Hwang, Minsu Kim, and Jae Hong Seo

     • IDFace: Face Template Protection for Efficient and Secure Identification (https://arxiv.org/abs/2507.12050)

     • Sunpill Kim*, Seunghun Paik*, Chanwoo Hwang, Dongsoo Kim, Junbum Shin, and Jae Hong Seo (*: Equal Contribution)

June, 2025

1. I will give the following invited presentation at KCCV 2025.

   • • Towards Certifiably Robust Face Recognition (Appeared at ECCV 2024)

2. One paper has been accepted for presentation at ICCV 2025. See you in Hawaii :)

• IDFace: Face Template Protection for Efficient and Secure Identification

• Sunpill Kim*, Seunghun Paik*, Chanwoo Hwang, Dongsoo Kim, Junbum Shin, and Jae Hong Seo (*: Equal Contribution)

March, 2025

1. I will participate in the following research project supported by Korea Institute of Information Security and Cryptology (KIISC)

• Adversarial Attacks and Security Analysis on Commercial Face Recognition APIs

Jan, 2025

1. One paper has been uploaded to IACR ePrint (2025/054).

2. • Doubly Efficient Fuzzy Private Set Intersection for High-dimensional Data with Cosine Similarity

   • Hyunjung Son, Seunghun Paik, Yunki Kim, Sunpill Kim, Heewon Chung, and Jae Hong Seo