Professor

DaeHun Nyang

DaeHun Nyang (양대헌) received B.Eng. degree with double major in electronic engineering and in computer science from Korea Advanced Institute of Science and Technology  (KAIST), M.S. and Ph.D. degrees in computer science from Yonsei University, Korea in 1994, 1996, and 2000 respectively. He had been a senior researcher at Electronics and Telecommunications Research Institute, Korea (ETRI), from 2000 to 2003. From 2003 to 2020, he had been a professor at Computer Science and Engineering Department of Inha University, Korea. Since 2020, he has been a professor at Cyber Security Department of College of Artificial Intelligence of Ewha Womans University. He is the founding director of the Information Security Research Laboratory established in 2003. He is an executive director of Korean Institute of Information Security and Cryptology. He had served KIISC Journal as the EiC (Editor in Chief) from 2021 to 2024 for four years and serves ETRI Journal as a section editor (Information security section). He has served the office of information technology as Chief Information Officer (CIO) since February of 2025. He’s a member of IEEE, ACM, and KIISC.

Dr. Nyang’s primary research area is approximate computing, with a particular focus on data sketches for counting, angular distance, and inner-product estimation. His work spans ZKIP, digital signatures, usable security, blockchain, network measurement, and approximate counting algorithms. He has also studied (encrypted) traffic analysis (including Tor and TLS) and In-Network Security (INS) using P4-programmable routers. More recently, his research has expanded to differential privacy for AI, AI/ML engineering, vector databases, LSM trees, and compact tensor representations, including KV-cache techniques. He is currently investigating challenges in differentially private sketches and approximate angular distance estimation.

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