| 摘要 |
A method for authenticating an item comprising an RFID having a memory for storing an identifier and a secret key, and a built-in hashing function, is disclosed. According to the method of the invention, the output of the RFID of the item to be authenticated is compared with the output of the RFID of a genuine item. To that end, a random number is transmitted to the item to be authenticated with zero as parameters. The RFID 's identifier, the random number, and the secret key are concatenated and use as input of the built-in hashing function that result is output with the RFID identifier. The RFID 's identifier and the random number are then transmitted to the RFID of the genuine item that returns its identifier and the output of the built-in hashing function computed with the RFID 's identifier of the item to be authenticated, the random number, and the secret key. If the results of both built-in hashing functions are identical, the item is authenticated else, it is counterfeiting. |
