Scenario and countermeasure for replay attack using join request messages in LoRaWAN. - SeungJae Na; DongYeop Hwang; Woonseob Shin; Ki-Hyung Kim (ICOIN, 2017)

Random Seed Generation For IoT Key Generation and Key Management System Using Blockchain. - Jungyong Choi; Woonseob Shin; Jonghyun Kim; Ki-Hyung Kim (ICOIN, 2020)

An Assistant Service for Customers in QR-payment with the Merchant Presented Mode. - Hye-Eun Lee; Woonseob Shin; Ki-Hyung Kim (ICOIN, 2020)

Attribute-Based Access Control(ABAC) with Decentralized Identifier in the Blockchain-Based Energy Transaction Platform. - Beomseok Kim; Woonseob Shin; DongYeop Hwang; Ki-Hyung Kim (ICOIN, 2021)