Title	Design of Secure Clustering Routing Protocol using SNEP and ?TESLA on Sensor Network Communication
Author	Kun-Won Jang, Woo-sik Jung, Dong-kyu Shin, Moon-Seog Jun
Citation	Vol. 6  No. 1  pp. 171~176
Keywords	Sensor network, Key management, Clustering, Energy savings

Title	A Study on DRM System for On/Off Line Key Authentication
Author	Kun-Won Jang, Chan-Kil Park, Jung-Jae Kim, Moon-Seog Jun
Citation	Vol. 6  No. 2  pp. 233~238
Keywords	DRM, Symmetric key, Agent, PKI.