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.