A News on Demand Service System based on Robot Agent. - Sung-Min Lee 006; Tai-Yun Kim (ICPADS, 1998)

Three-Pass Hybrid Key Establishment Protocol Based on ESIGN Signature. - Sung-Min Lee 006; Tai-Yun Kim (SAFECOMP, 1999)

A Secure Electronic Software Distribution (ESD) Protocol Based on PKC. - Sung-Min Lee 006; Hyung-Woo Lee; Tai-Yun Kim (EC-Web, 2000)

Secure Electronic Copyright Distribution with Public Key Based Traitor Tracing. - Hyung-Woo Lee; Sung-Min Lee 006; Im-Yeong Lee (EC-Web, 2002)

Two-Pass Hybrid Key Distribution Protocol Based on ECC. - Sung-Min Lee 006; Tai-Yun Kim (J. Inf. Sci. Eng., 2002)