A Study on the E-Cash System with Anonymity and Divisibility. - Seo-Il Kang; Im-Yeong Lee (ICCSA (2), 2005)

Authentication for Single/Multi Domain in Ubiquitous Computing Using Attribute Certification. - Deok-Gyu Lee; Seo-Il Kang; Dae-Hee Seo; Im-Yeong Lee (ICCSA (4), 2006)

An Intelligent and Efficient Traitor Tracing for Ubiquitous Environments. - Deok-Gyu Lee; Seo-Il Kang; Im-Yeong Lee (KES (2), 2006)

A Study on Key Distribution and ID Registration in the AAA System for Ubiquitous Multimedia Environments. - Seo-Il Kang; Deok-Gyu Lee; Im-Yeong Lee (MMM (2), 2007)

Group Key Management Using Device ID in Ad-hoc Network. - Jong Sik Moon; Im-Yeong Lee; Seo-Il Kang (CSA, 2009)