Abstract: The disclosure relates to a method and apparatus for authenticating an electronic device. An operating method of a target device according to an embodiment includes generating a random value based on whether an electronic device is within a certain distance from the target device, transmitting, to the electronic device, first information including the generated random value and identification information of the target device, and receiving, from the electronic device, first authentication information obtained based on the first information, encrypting the received first authentication information and a target device key, transmitting the encrypted target device key and the encrypted first authentication information to a server, and receiving, from the server, second authentication information obtained based on the first authentication information, and determining whether to open or close a door based on a comparison between the second authentication information and the random value.

Abstract: The present disclosure relates to a method and device for performing access control by authenticating an electronic device and performing secure ranging. The method may include: receiving, from a server, a device certificate including a first scrambled timestamp sequence (STS) code encrypted by a public key of the electronic device and a second STS code encrypted by an STS key; transmitting the device certificate to a target device; obtaining the first STS code by decrypting the encrypted first STS code by using a secret key of the electronic device: and performing secure ranging with the target device by using the first STS code.

Abstract: The disclosure relates to a method and apparatus for authenticating an electronic device. An operating method of a target device according to an embodiment includes generating a random value based on whether an electronic device is within a certain distance from the target device, transmitting, to the electronic device, first information including the generated random value and identification information of the target device, and receiving, from the electronic device, first authentication information obtained based on the first information, encrypting the received first authentication information and a target device key, transmitting the encrypted target device key and the encrypted first authentication information to a server, and receiving, from the server, second authentication information obtained based on the first authentication information, and determining whether to open or close a door based on a comparison between the second authentication information and the random value.

Abstract: Provided are an entrance management system and an operating method thereof. The operating method of an entrance management system may include: detecting an electronic device by using short-range wireless communication; measuring a distance from the electronic device; when the electronic device enters a set first range, opening an entrance; and when the distance from the electronic device decreases to a preset value or less, closing the entrance.

Abstract: Provided is a method of accessing a service by using authentication of an electronic device. An operation method of the electronic device includes: selecting a cloud server for storing data, based on first authentication information including an identifier of the electronic device and network addresses of a plurality of cloud servers; transmitting, to a service providing server, second authentication information including the identifier of the electronic device, a network address of the selected cloud server, and information about a service executed on the electronic device; and receiving, from the service providing server, information about a result of subscribing to the service determined based on the second authentication information.

Abstract: Provided is a method, performed by an electronic device, of safely and quickly transmitting a remote control command to a target device. The method includes: obtaining information related to encryption based on a mutual authentication process between the electronic device and the target device; providing, to a framework and from a digital key applet installed on a secure element of the electronic device, the information related to encryption; encrypting a remote control command by using the information related to encryption; and transmitting the encrypted remote control command to the target device.