Method and apparatus for authenticating a device using Bluetooth technology

A method for a first device to perform authentication by using Bluetooth LE (Low Energy), the method comprising:

• receiving, from a second device, a request message requesting capability information of the first device,
• wherein the request message includes second input/output capability information of the second device;
• transmitting a response message including first input/output capability information of the first device in response to the request message;
• receiving from the second device a write request message including a random code for first authentication through a user authentication service,
• wherein the random code is generated based on at least one of the first and second input/output capability information;
• transmitting a write response message in response to the write request message to the first device;
• performing a specific operation corresponding to the random code;
• transmitting an authentication indication message including state information to the second device,
• wherein the state information indicates success or failure of the first authentication according to whether specific data obtained from a user is mapped to the specific operation;
• and
• receiving an authentication complete message in response to the authentication indication message.

A first device for performing authentication by using Bluetooth LE (Low Energy), the first device comprising:

• transceiver configured to transmit and receive signals;
• and
• a processor functionally connected to the transceiver, wherein the processor is configured to:
• transmit, to a second device, a request message requesting capability information of the second device,
• wherein the request message includes first input/output capability information of the first device;
• receive, from the second device, a response message including second input/output capability information of the second device in response to the request message;
• generate a random code for first authentication through a user authentication service based on at least one of the first and second input/output capability information;
• transmit a write request message including the generated random code to the second device;
• receive a write response message in response to the write request message from the second device;
• receive an authentication indication message from the second device,
• wherein the authentication indication message includes state information indicating success or failure of the first authentication based on the random code;
• and
• transmit an authentication completion message in response to the authentication indication message.