Seongkwang Kim

Cryptographer

Seongkwang Kim

Assistant Professor at Korea University

I am an assistant professor at School of Cybersecurity, Korea University. Previously, I was a senior engineer at Samsung SDS (2022-2026). I received my Ph.D. in information security from KAIST in 2022 under the supervision of Prof. Jooyoung Lee. My research interests include symmetric primitive design, privacy-enhancing technologies (MPC, ZKP), and post-quantum signature schemes.

Publications

Making GCM Great Again: Toward Full Security and Longer Nonces W. Chung, S. Hwang, S. Kim, B. Lee, and J. Lee. The 44th Annual International Conference on the Theory and Applications of Cryptographic Techniques (EUROCRYPT 2025)
Relaxed Vector Commitment for Shorter Signatures S. Kim, B. Lee, and M. Son. The 44th Annual International Conference on the Theory and Applications of Cryptographic Techniques (EUROCRYPT 2025)
Private Computation on Common Fuzzy Records K. Han, S. Kim, and Y. Son. Proceedings on Privacy Enhancing Technologies Symposium (PoPETs 2025)
Revisiting OKVS-based OPRF and PSI: Cryptanalysis and Better Construction K. Han, S. Kim, B. Lee, and Y. Son. The 30th Annual International Conference on the Theory and Application of Cryptology and Information Security (ASIACRYPT 2024)
AIM: Symmetric Primitive for Shorter Signatures with Stronger Security * S. Kim †, J. Ha†, M. Son, B. Lee, D. Moon, J. Lee, S. Lee, J. Kwon, J. Cho, H. Yoon, and J. Lee. The 30th ACM Conference on Computer and Communications Security (CCS 2023)
Rubato: Noisy Ciphers for Approximate Homomorphic Encryption J. Ha, S. Kim, B. Lee, J. Lee, and M. Son. The 41st Annual International Conference on the Theory and Applications of Cryptographic Techniques (EUROCRYPT 2022)
Transciphering Framework for Approximate Homomorphic Encryption J. Cho, J. Ha, S. Kim, B. Lee, J. Lee, J. Lee, D. Moon, and H. Yoon. The 27th Annual International Conference on the Theory and Application of Cryptology and Information Security (ASIACRYPT 2021)
Masta: An HE-friendly Cipher Using Modular Arithmetic *J. Ha, S. Kim, W. Choi, J. Lee, D. Moon, H. Yoon, and J. Cho. IEEE Access 10.1109/ACCESS.2020.3033564,
Tight Security Bounds for Double-Block Hash-then-Sum MACs S. Kim, B. Lee, and J. Lee. The 39th Annual International Conference on the Theory and Applications of Cryptographic Techniques (EUROCRYPT 2020)
Shorter VOLE-in-the-Head-based Signatures from Vector Semi-Commitment S. Kim, B. Lee, and M. Son. Cryptology ePrint Archive. Report 2025/1077. 2025. https://eprint.iacr.org/2025/1077

Talks & Posters

The AIMer Signature Scheme KpqC Winter Camp 2026. Feb. 2026. Seoul, Korea
Relaxed Vector Commitment for Shorter Signatures Invited Talk, ICISC 2025. Nov. 2025. Seoul, Korea
AIMer Standard Format 2025 KpqC Conference. Nov. 2025. Seoul, Korea
Hash-based Signatures KIISC Cryptography Education Program. Nov. 2025. Online
AIMer Standardization Document Writing Plan 2025 KpqC Workshop. Jul. 2025. Taean, Korea
Secure Multiparty Computation, MPC-in-the-Head, and AIMer KIISC Cryptography Education Program. Jul. 2025. Online
AIMer v2.1 and Beyond Cryptography Research Society (in KIISC) 2025 Mid-term Workshop. Jun. 2025. Busan, Korea
AIMer v2.1 and Beyond Invited Talk, KMS Spring Meeting 2025. Apr. 2025. Daejeon, Korea
Revisiting OKVS-based OPRF and PSI: Cryptanalysis and Better Construction Asiacrypt 2024. Dec. 2024. Kolkata, India
Updates on AIMer KpqC 9th Workshop. Oct. 2024. Seoul, Korea
Circuit-PSI and Applications NIST Workshop on Privacy Enhancing Cryptography. Sep. 2024. Online Online
AIMer KpqC Contest Colloquium. Aug. 2024. Seoul, Korea
The AIMer Signature Scheme NIST 5th PQC Standardization Conference. Apr. 2024. Rockville, MD, US. https://csrc.nist.gov/Events/2024/fifth-pqc-standardization-conference
Efﬁcacy and Mitigation of the Cryptanalysis on AIM NIST 5th PQC Standardization Conference. Apr. 2024. Rockville, MD, US
AIM: Symmetric Primitive for Shorter Signatures and Stronger Security ACM CCS 2023. Nov. 2023. Copenhagen, Denmark
The AIMer Signature Scheme Invited Talk, 2nd Oxford PQC Summit. Sep. 2023. Oxford, United Kingdom. https://www.maths.ox.ac.uk/events/conferences/past-events/ oxford-post-quantum-cryptography-workshop-2023
Signature Schemes based on the MPC-in-the-Head Paradigm Invited Talk, Ewha-KMS International Cryptography Workshop 2023. Jul. 2023. Seoul, Korea
Reducing the Overhead of Approximate Homomorphic Encryption Invited Talk, KMS Fall Meeting 2022. Oct. 2022. Seoul, Korea
Rubato: Noisy Ciphers for Approximate Homomorphic Encryption Eurocrypt 2022. Jun. 2022. Trondheim, Norway .https://youtu.be/TE_sYzJtZQc (in English)
Transciphering Framework for Approximate Homomorphic Encryption Invited Talk, CryptoLab. Dec. 2021. Seoul, Korea
Transciphering Framework for Approximate Homomorphic Encryption Asiacrypt 2021. Dec. 2021. Online. https://youtu.be/r3_07fWqOas (in English)
Transciphering Framework for Approximate Homomorphic Encryption Security @ KAIST. Nov. 2021. Online. https://youtu.be/xKEgtZeMTaw?t=6434 (in Korean)
Hybrid Framework for Approximate Computation over Encrypted Data KMS Spring Meeting 2021. Apr. 2021. Online

Curriculum Vitae

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