Simple and Efficient Group Key Agreement Based on Factoring. - Junghyun Nam; Seokhyang Cho; Seungjoo Kim; Dongho Won (ICCSA (1), 2004)

An Efficient Dynamic Group Key Agreement for Low-Power Mobile Devices. - Seokhyang Cho; Junghyun Nam; Seungjoo Kim; Dongho Won (ICCSA (1), 2005)

Secure Mobile Content Delivery Using Dynamic Group Key Agreement with Batch Verification. - Seokhyang Cho; Kiwon Song; Dongsub Cho; Dongho Won (ICCSA (2), 2007)

Cryptanalysis and Improvement of an Advanced Anonymous and Biometrics-Based Multi-server Authentication Scheme Using Smart Cards. - Chunyi Quan; Hakjun Lee; Dongwoo Kang; Jiye Kim; Seokhyang Cho; Dongho Won (AHFE (9), 2017)

Cryptanalysis and improvement of robust authentication scheme for telecare medicine information systems. - Dongwoo Kang; Donghoon Lee 007; Seokhyang Cho; Jaewook Jung; Dongho Won (IMCOM, 2017)

Improved Anonymous Biometric-based Authentication with Key-Agreement Scheme for Multi-Server Environments. - Jongho Moon; Taeui Song; Seokhyang Cho; Dongho Won (IMCOM, 2018)