Abstract: Provided is a system for blockchain-based multi-factor security authentication between a mobile terminal and an IoT device, the system including: the IoT device; a user terminal remotely controlling operation of the IoT device; and an authentication server approving control of the IoT device by the user terminal, wherein the authentication server has: a first function of recording information related to a registration hash value in a blockchain; a second function of receiving an authentication hash value generated by the user terminal when approval for control of the IoT device is requested, and determining validity of the authentication hash value by using the information related to the registration hash value recorded in the blockchain; and a third function of approving control of the IoT device by the user terminal when the authentication hash value has validity as a result of the determination.

Abstract: Provided is a system for blockchain-based multi-factor security authentication between a mobile terminal and an IoT device, the system including: the IoT device; a user terminal remotely controlling operation of the IoT device; and an authentication server approving control of the IoT device by the user terminal, wherein the authentication server has: a first function of recording information related to a registration hash value in a blockchain; a second function of receiving an authentication hash value generated by the user terminal when approval for control of the IoT device is requested, and determining validity of the authentication hash value by using the information related to the registration hash value recorded in the blockchain; and a third function of approving control of the IoT device by the user terminal when the authentication hash value has validity as a result of the determination.