RFID-based genuine product certification service system and method employing code update algorithm for forgery prevention

A radio frequency identification (RFID)-based genuine product certification service method employing a code update algorithm for forgery prevention, the method comprising:

• an (a) step in which an RFID tag ID number, an RFID tag access code, and a genuine product certification code are stored in an RFID tag, and a wired or wireless terminal including an RFID writer and reader recognizes an RFID tag attached to a product or document at a recognition distance;
• a (b) step in which the wired or wireless terminal requests the recognized RFID tag and the RFID tag access code from a genuine product certification processing server, and the genuine product certification processing server checks an access right to the RFID tag by inquiring of a genuine product certification information storage device and transmits an RFID tag access code for the RFID tag to the wired or wireless terminal;
• a (c) step in which the wired or wireless terminal transmits the RFID tag access code to the RFID tag, the RFID tag compares the received RFID tag access code with the RFID tag access code stored in a memory thereof, and based on the RFID tag access codes coinciding with each other, the wired or wireless terminal recognizes the RFID tag ID number and the genuine product certification code of the RFID taq and requests genuine product certification by transmitting the RFID tag ID number and the genuine product certification code to the genuine product certification processing server;
• a (d) step in which the genuine product certification processing server retrieves detailed product information of the RFID tag, with which genuine product certification has been requested, stored in the genuine product certification information storage device, transmits a genuine product certification success response, the detailed product information, and a new genuine product certification code to the wired or wireless terminal based on the genuine product certification code coinciding with the genuine product certification code stored in the genuine product certification information storage device, and stores the new genuine product certification code in the genuine product certification information storage device;
• and
• an (e) step in which the wired or wireless terminal outputs a success of genuine product certification and the detailed product information on a display window thereof and transmits the new genuine product certification code to the RFID tag, and the RFID tag stores the new genuine product certification code.