The research of RFID middleware’s data management model

With the development of RFID applications, the rapidly increasing number of companies actively participated in the RFID system development and the RFID devices which adopt the different communications protocol. So the RFID middleware becomes a very hot topic. RFID middleware is a new breed of application software which facilitates data communication between automatic identification equipments like RFID readers and enterprise applications. At the same time, the data of the application program are written in the tag and data security is very important to ensure application software security such as WMS, ERP. This paper refers to data management model of RFID middleware to increase the data security and tag capacity and describe the architecture of RFID middleware. Because the capacity of tag is limited, the store space of the ciphertext is must be considered and it is possible that the key table is very big in order to reduce the query speed. So this system used two-step encryption and adopted improved the transposition encryption. To increase the storing capacity of RFID tag, this paper adopt LZW compression algorithm. The RFID middleware rapidly becomes the common interface of different RFID devices.