METHOD FOR SECURE DATA TRANSMISSION

摘要

A method for transmitting data safely in an RFID(Radio Frequency IDentification) system is provided to prevent forgery, information leakage, and tracking, use a PIN(Personal ID Number) safely, and use an EPCgloblal(Electronic Product Code) class-1 gen(generation)-2 application by using a session procedure of EPCgloblal(Electronic Product Code) class-1 gen-2 without any modification. A tag generates RT32, which is a pseudo random number, when a reader requests a query(203), and the tag calculates M1 by using RT32 and transmits M1 to the reader(206). The reader generates RR32, which is the new pseudo random number, and transmits acknowledgement for M1 and RR32 to the tag when M1 is received from the tag(209). The tag calculates M2, M3, and E by using RR32, and transmits PC, E, and CRC16 to the reader(215). The reader transmits E, M1, and RR32 to a backend server(218), and the backend server finds an EPC and transmits information corresponding to the tag to the reader when the EPC is found(224).