Method and apparatus for registering device capable of device-to-device communication to server

The first device in accordance with one embodiment of the present invention transmits the digital signature information of the communication unit and the first device to the portable terminal communicating via the inter-portable terminal and the device communicate and, upon successful authentication for the fingerprint information receiving the server's public encryption information sent by the server to the portable terminal from the portable terminal, and controls the communication unit to register to send the device information of the first device encrypted using the server's public cryptographic information to the server, and a control unit for, so minimal user input required by the server registration of a device, increasing the user's convenience, and the authentication time is shortened.