Affiliation: | 1. Dept. of Information Security, Tongmyong University, 428, Shinseon-ro, Namgu, Busan, Korea 2. Dept. of Information Communication Engineering, Inje University, 197, Inje-ro, Kimhae, KyungNam, Korea 3. Dept. of IT Convergence and Application Engineering, Pukyong National University, 45, Yongso-ro, Busan, Korea
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