Ic Card Prepaid Research And Design Of Information Management Systems

IC card prepayment technique,a new technique area developed in the recentyears, is used to solve the difficulty in collecting the fee of the public services, suchas water, electricity, gas. This technique has been promoted graduatelly in the pastfew years. Data security is the most important technique problem of all the IC cardprepayment product systems, but the majority of the IC card prepayment productsystems on he current market haven't solved the data security problem perfectly.In this paper several topics are investigated: the password security of the IC card,encrypting and checking the data on the IC card, the security of the database, and anovel comprehensive data security design scheme is proposed, so that damages bypassive and active attacks can been avoided. Especially this paper adopts thetechnique of encrypting lock and the encryption mechanism of multi－hierarchyencryption key, which provide a new idea for the data encryption of IC cardprepayment product systems. This paper mainly dissertates with the software of the system -IC cardprepayment management system, after briefly introducing the whole IC cardprepayment products system. At First this paper introduces all the hardware andsoftware resources which been used to develop the management system, thenintroduces the functions and interfaces of the software. To implement thedevelopment principle of the whole software, simple and practical, safe and reliable,the software puts the data security in the most important position all along, andconsiders the practical demands of all the types of users synthetically. After testingand modifying again and again, the software has been developed into a verysatisfactory product. As a part of the whole IC card prepayment, this management system has beenapplied in several residential quarters, almost all the users are satisfied with it.