Electronic device authentication method, and apparatus according thereto

An operating method of an electronic device, the operating method comprising:

• receiving, from a target device, first information comprising identification information of the target device and a random value;
• signing the received first information with a private key of the electronic device;
• transmitting, to the target device, first authentication information comprising the signed first information and identification information of the electronic device;
• transmitting, to a server, an encrypted target device key and encrypted first authentication information received from the target device;
• receiving, from the server, second authentication information obtained based on the first authentication information;
• and
• transmitting the received second authentication information to the target device,
• wherein the encrypted first authentication information is encrypted by using the target device key, and
• wherein the encrypted target device key is encrypted by using a server key.

A target device comprising:

• a transceiver;
• a memory configured to store at least one instruction;
• and
• at least one processor configured to control the target device by executing the at least one instruction to:
• generate a random value based on whether an electronic device is within a certain distance from the target device,
• transmit, to the electronic device, first information comprising the generated random value and identification information of the target device,
• receive, from the electronic device, first authentication information obtained based on the first information,
• encrypt the received first authentication information by using a target device key,
• encrypt the target device key by using a server key,
• transmit, to the electronic device for a server authentication, the encrypted target device key and the encrypted first authentication information,
• receive, from the electronic device, second authentication information obtained based on the server authentication, and
• determine whether to open or close a door based on a comparison between the second authentication information and the random value,
• wherein the first information is signed with a private key of the electronic device,
• wherein the first authentication information includes the signed first information and identification information of the electronic device.

An electronic device comprising:

• a transceiver;
• a memory configured to store at least one instruction;
• and
• at least one processor configured to control the electronic device by executing the at least one instruction to:
• receive, from a target device, first information comprising identification information of the target device and a random value,
• sign the received first information with a private key of the electronic device,
• transmit, to the target device, first authentication information comprising the signed first information and identification information of the electronic device,
• transmit, to a server, an encrypted target device key and encrypted first authentication information received from the target device,
• receive, from the server, second authentication information obtained based on the first authentication information, and
• transmit the received second authentication information to the target device,
• wherein the encrypted first authentication information is encrypted by using the target device key, and
• wherein the encrypted target device key is encrypted by using a server key.