Research On The Access Control System Based On Permutation Code

Radio Frequency Idenditification appeared in 1980's, was popularized in 1990's, and now is more and more perfect. Along with the development of economy and technology, RFID is becoming more popular in mass transit, public traffic, finance trade and safety-defend.Magnetic card or touch IC was usually used in the past, either magnetic card or touch IC is frictional waste and short life. Radio Frequency can meet their shortage, because RF card is wireless, it can guarantee the reliability of system for long term running, however, it need more attention on the information security because the information maybe uncovered in the air. This paper will discuss the application of RF card in access control system, a series of new technology including Permutation Code is used to solve the safety problem.Firstly a simple introduction to the development history and future direction of IC is made, then there is a talk about the characteristic and application of various intelligent cards in different period. Secondly, the classification of encryption technology and the actuality of the block cipher is introduced, meanwhile a new encryption technology with high encryption strength, high speed and less resource occupation is proposed, then the hardware design and software design of the system is discussed, and there is a detail discussion to hardware structure, chip selection, driver program and encryption algorithm. Lastly, a summary of the research is given along with the shortage of this paper's work.