| From chinese economic refrom on 1978 so far, the computor network has been one of the most impotant sociaty’s infrastructures depending on that people make greate progress on the internet technology. Meanwhile, smart IC card is applied widely in many fields and industries. To push the improvement of the goverment mannage process and manner, and increasement of chinese economic, much more convinient of personal’s life,metro card makes so many contributions. The ubiquity of metro card have much effects on construction of city: 1) it make more convinient for riding bus,texi and metro. 2)it can resolve the problem that people is boring with taking change and taking forged money by using EP(e-wallet) in penny ante witout cash. 3) With metro card system, manager can integrate the business such as water fee,gas fee,high-way usage fee,and fee of other public business,to make user more convinients.With the above features of metro card system, this paper will discuss the following aspects of metro card system:1) describe the metro card system solution, analysis the system requirements and split the system to independent sub-modules,and how to implement the target of metro card system.2) describe the design of the key subsystem of metro system:the encryption key management subsystem. Focus on the security level of the metro card’s ecryption mechanism,and the process of the key creation/distribution and usage.3) introduct the history of metro card system,and discuss the advantages and disvantages on the design and encryption techonology of CUP card with the features of metro system and comparing with other smart IC cards.4) discribe the design of the important parts in metro card system: process of public consume trade. |
