System and Method for Assigning Dynamic ID to RFID Tag, RFID Tag, RFID Terminal and Recording Medium

摘要

A system and a method for assigning a dynamic ID to an RFID(Radio Frequency IDentification) tag, and the RFID tag, an RFID terminal, and a recording medium for the same are provided to safely assign/record ID information to the RFID tag with interconnection between the RFID tag and the RFID terminal through an encoding protocol using an encoding key and a key index. The RFID tag(100) generates a random number, encodes the random number by selecting the encoding key, and transmits the random number, the encoded random number, and the key index to the RFID terminal. The RFID terminal(300) encodes the received random number by extracting a security key matched with the received key index, and compares the encoded random number with the encoded random number received from the RFID tag. If both encoded random numbers are matched with each other, the RFID terminal extracts the ID information assigned to the RFID tag from storage media(330-335) and transmits the extracted ID information to the RFID tag. The RFID tag decodes the encoded ID information received from the RFID reader and stores the decoded ID information to a memory.