Research on the Application of Smart Card in the Information Management of University Education
0 Preface
In recent years, with the rapid development of smart card technology and the implementation of the national information strategy, the education information management of colleges and universities has always been valued by the education community. The major universities across the country began to introduce smart cards one after another. The introduction of smart cards has effectively promoted the informationization of college education management. The campus card management system introduced by colleges and universities is a very typical application of smart card technology. In colleges and universities, faculty and students have one card, and the card has become their identification mark. Its uniqueness and the modifiability of the information within the card make the campus card can be applied to all management levels of the university. However, due to the current low degree of social informationization, the degree of informationization of college education is also limited. The time for introducing smart cards into colleges and universities is not long. From the perspective of the overall application of smart cards in the information management of colleges and universities, the application is still very limited. In some special departments, such as canteens, libraries, etc. Therefore, how to apply the powerful functions of smart cards to various management levels of colleges and universities to play their role. Become a very popular research topic.
1 smart card introduction
The smart card is a type of an IC card (integrated circuit card) in which a microchip is embedded. According to the type of chip embedded, IC cards can be divided into three categories. The first type is a memory card. The integrated circuit in the card is an electrically erasable programmable read-only memory EEPROM, which has only data storage function. There is no data processing capability, the memory card itself has no hardware encryption function, and only encrypts on the file, which is easy to be cracked. The second type is a logical encryption card. The integrated circuit in the card includes an encryption logic circuit and a programmable read-only memory. The encryption logic circuit can protect the data in the card and the card to a certain extent, but only low-level protection can not prevent malicious. attack. The third type is a smart card (CPU card), and the integrated circuit in the card includes a central processing unit CPU, a programmable read only memory, a random access memory RAM, and a card operating system COS (Chip Operating System) which is solidified in a read only memory ROM. The data in the card is divided into external reading and internal processing to ensure the data in the card is safe and reliable, and the card contains an RFID chip, so they can identify the cardholder without any physical contact with the reader, and some places also It is called a contactless IC card [1].
2 Typical application of smart cards in colleges and universities
The typical application of smart cards in colleges and universities is the campus card system, and its application is mainly reflected in two aspects. The first is the consumer payment function. Through the e-wallet in the campus card, the cardholder can settle the card at any consumer network that is connected to the system on the campus to realize digital and electronic currency settlement. A typical application is the dining payment system for faculty and students in college canteens. The card holders deposit the amount into the card through a prepaid method through a special recharge system, and then use the card for consumption. The application can solve the problems of health and corruption brought by cash dining for college logistics management, and can improve the efficiency of cardholders' dining. The second is the identification function. The campus card is printed with the cardholder identity, such as the student number or employee number, name, photo, and affiliation. The background color of different identity cards such as faculty, temporary workers, and students is also different for identification. Cardholder identity information is stored in the IC card and database system of the campus card, which realizes electronic identification on campus and cancels various certificates. A typical application is the library lending management system of university libraries. The cardholder enters the university library to hold the card, and only the legal cardholders are allowed to enter, and the book management system can be used to borrow the book. If there is an extension of borrowing, the management system will deduct the amount in the card and complete the overdue fine. Another typical application is for students to operate on the machine. At present, computer education has been popularized in colleges and universities. A large number of students have access to information and learning at their own expense in their spare time. The campus card system can automatically complete the identification and payment of the machine, saving a lot of manpower and resources for the university and improving efficiency [2] .
3 Problems in the Information Management of College Education
There are two typical problems in the current educational information management of colleges and universities. The first is the problem that the application surface is too narrow. In fact, the campus card system is far more powerful than the one described in the article. The applications described above are mainly reflected in the field of daily life management in colleges and universities. As a college, teaching management has always been the most important and most important issue in all aspects of education management. Many problems related to teaching management need to be solved, such as teaching attendance management, while teaching attendance management mainly adopts the traditional method of naming, and its drawbacks are obvious. The efficiency is too low, especially in the teaching of colleges and universities to adopt a large class system. Obviously, the oral naming method is unrealistic. For this reason, it is entirely possible to use the unique identity of the campus card to realize automatic name-calling. The second is that the campus card system does not have a close connection with the school's existing network resources. Before the introduction of smart cards into colleges and universities, colleges and universities generally have computer network systems, and some information management, such as student's student status management and examination management, is realized, but these computer network resources and campus card system are completely independent. . How to integrate these network resources with the campus card system to play its greater role is an important topic currently facing the education information management of colleges and universities [3].
4 typical problem solution
In view of the above problems, this paper takes the most difficult teaching attendance problem in college teaching management as an example, introduces the design idea and implementation process of a smart card-based teaching attendance system, and based on this, explains the solution of similar problems [4]. . This system uses Philips Mifare oneS50 smart card, with Visual Basic6.0+SQL SERVER2000 as the programming development platform.
4.1 Philips Mifare oneS50 smart card structure
The card is an EEPROM structure with a capacity of 8K, divided into 16 sectors, each sector is 4 blocks, each block is 16 bytes, and the block is the access unit. Each sector has an independent set of passwords and Access control. The structure of the card is shown in Figure 1. The password and access control of each sector are independent, and the respective passwords and access controls can be set according to actual needs. The access control is 4 bytes, a total of 32 bits, and the access conditions of each block (including the data block and the control block) in the sector are determined by the password and the access control, respectively, in the access control. The block has three corresponding control bits. For detailed access control of the card, please refer to the literature [5].
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