ENCRYPTION APPARATUS, A DECRYPTION APPARATUS, AN RFID SYSTEM INCLUDING OF THE SAME, AND A METHOD DRIVING THEREOF, CAPABLE OF EXTRACTING AN ID OF THE ENCRYPTION APPARATUS FROM A CODE SIGNAL RAPIDLY

摘要

PURPOSE: An encryption apparatus, a decryption apparatus, an RFID system including of the same, and a method driving thereof are provided to extract an ID of encryption apparatus rapidly by using a lookup table and making a computation for decoding a code signal simple.;CONSTITUTION: In a device, a signal generator(11) generates a tag message based on a reader message received from the outside. A first encryption device(13) uses a first cryptographic key, ciphers the tag message, and outputs the first code signal. The second encryption device(15) uses a second cryptographic key, ciphers the first code signal, and outputs a second code signal. The first cryptographic key and the second cryptographic key corresponding to ID data of the encryption device are stored in a lookup table(17).;COPYRIGHT KIPO 2010