Method for implementing smart card multi-application and data processing apparatus

Abstract

This invention discloses one method to realize intelligent card multiple application, which comprises the following parts: at least one capacitor to store data on each subject with each one composed of at least one application subject set; operation interface of capacitor to realize common needle subject operation. This invention can use capacitor by intelligent card and subject concept application data to provide common operations for outer process.

Description

technical field [0001] The invention relates to the technical field of data storage and information security, in particular to a method for realizing multiple applications of smart cards and a data processing device. Background technique [0002] Because existing magnetic stripe cards have defects such as poor security, banks at home and abroad are gradually adopting smart cards (CPU cards) to replace magnetic stripe cards, and have issued a large number of smart cards individually or jointly with industry users. Generally speaking, a smart card is a plastic card containing an embedded integrated circuit (IC), which contains a tiny central processing unit (CPU), ROM, RAM and other peripheral circuits. The integrated circuit has capabilities similar to those of a computer. , for example: running programs, processing input and output data. When using the above-mentioned CPU card, it is necessary to provide power and other interface devices from the outside. [0003] In order...

AI Technical Summary

Problems solved by technology

[0009] 1. When the CPU card creates a file, it must first declare the type of the file to be created and the size of the file to be created; and, after confirmation, the length of the file is fixed and cannot be changed, so that the previously applied space cannot be used again

[0010] 2. After the CPU card creates a file, it cannot be deleted

[0011] 3. There are only a few types of CPU card files, that is, the file types are fixed

[0012] 4. The CPU card must create and write files by sending messages to the smart card, and the number of bytes written each time generally cannot exceed 256 bytes, and the processing process is complicated

As a result, the application development of smart cards is limited to a relatively small circle, and it is difficult to realize and promote the multi-application of smart cards.

[0025] Because the existing technology cannot formulate a set of instructions or processes that can meet the application of CPU cards in various industries, the development cost is extremely high, and subsequent upgrades or business integration are difficult to achieve

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