SECURITY METHOD IN A RADIO FREQUENCY IDENTIFICATION ENVIRONMENT AND A SYSTEM USING THE SAME, PARTICULARLY FOR PERFORMING THE OPERATION IN A SERVER LINKAGE MODEL OR A NON-SERVER LINKAGE MODEL BY COMPARING A MASTER KEY GROUP LIST OF A TAG AND A MASTER KEY GROUP LIST OF A SERVER

摘要

PURPOSE: A security method in an RFID(Radio Frequency IDentification) environment and a system using the same are provided to perform efficient authentication and data protection in a server linkage model and a non-server linkage model.;CONSTITUTION: A tag transmits pseudorandom numbers(503), and a reader transmits a master key group list(509). A server transmits a master key group corresponding to the master key group list(511). The reader transfers a tag information reception signal(513), and the tag encodes tag information(515). The reader updates security information corresponding to the tag(517).;COPYRIGHT KIPO 2011