A multi-issued tag key agreement with time constraint for homeland defense sub-department in NFC environment

Due to the proliferation of variety RFID applications supporting homeland security and defense missions, mobile devices need to store many different RFID tags to access multiple homeland defense sub-departments. Although the integration technologies of RFID systems and mobile devices have been defined and appeared in some NFC specifications. In recently years, combine the technologies of Near Field Communication (NFC) in Mobile devices can improve constraint computation capability and memory usage for Radio Frequency Identifications (RFID) systems. Nevertheless, currently some NFC secure key management mechanisms manage these secure multiple secret keys are needed to be very large duplicated storage space using lots of RFID tags, and they still lack the efficiency and flexibility in the management. In this paper, we first propose a multi-issued tag key agreement with time constraint, accompanying a new type of secure tag, called as a secure multi-issued tag, to deal with the problem of the management of multiple secure accesses. To achieve the requirement of near field spatial communications, each secure multi-issued tag can be authorized by distinct missions belonging to distinct group served among homeland defense sub-departments.