APPARATUS AND METHOD FOR UNIFICATION OF MULTIPLE RADIO-FREQUENCY IDENTIFICATIONS

摘要

A device and a method for unifying multiple RFIDs(Radio Frequency IDentification) are provided to protect privacy of a user by preventing an illegal wiretapper from obtaining information of a user's RFID tag. A data operator(160) collects/stores each RFID of at least one RFID tag and repeatedly collects/stores each RFID if a timeout event is generated. A hash operator(140) connects, hashes, and outputs the RFIDs as a single value. A random number generator(120) generates a random number used as an encryption factor for encrypting the single value with a public key. An RFID tag processor(170) controls lock/release of the RFID tag. A public key operator(110) outputs a ciphertext by receiving the single value, and performing public key encryption for the single value with the specific public key and the random number. An RF communicator(180) converts the ciphertext into an RF signal and transmits the RF signal.