Affiliation: | 1.Department of Information Security, Tongmyong University, Busan, Republic of Korea ;2.Department of Information Communication Engineering, Tongmyong University, Busan, Republic of Korea ;3.Department of Information Communication Engineering, Inje University, Gimhae, Republic of Korea ;4.Department of IT Convergence and Application Engineering, Pukyong National University, Busan, Republic of Korea ; |