Smart card and method for accessing objects in smart card

A technology for accessing objects and smart cards, which is applied to collaborative devices, instruments, program control devices, etc. It can solve the problems of complex processing, high development costs, and the inability to delete CPU cards, and achieve the effect of reducing costs.

Active Publication Date: 2007-09-26
CHINA UNIONPAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 byt

Method used

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  • Smart card and method for accessing objects in smart card
  • Smart card and method for accessing objects in smart card
  • Smart card and method for accessing objects in smart card

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Embodiment Construction

[0072] The application (Application) in the present invention generally refers to an application protocol and related data between a smart card and a card reading device (Card Acceptance Device, CAD). A typical smart card device generally includes an 8- or 16-bit microprocessor running at 3.7 MHz, with 1K of RAM and more than 16K of non-volatile memory (programmable read-only memory or flash memory). Smart cards can be divided into contactable and non-contactable. Contactable smart cards communicate and work through the physical contact between the reader and the smart card's 8 contacts, while non-contactable smart cards rely on radio frequency signal communication within a general distance of less than 2 feet.

[0073] The application of the typical smart card described in the present invention is not isolated, but includes a smart card, a card reading device and a back-end application program. Referring to Fig. 2, a block diagram of a smart card application device.

[0074] The ...

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Abstract

This invention discloses one intelligent card memory subject method by use of capacity device in subject type, which comprises the following steps: testing order parameters and judging its legality and analyzing its detail operation type; analyzing input subject label and judging whether the current application entrance label is same; if yes, then indexing the current entrance; if there is the subject, fulfilling the memory operation flow according to the subject property; due to APDU subject this invention is for each detail application flow.

Description

Technical field [0001] The invention relates to the field of data storage and information processing, in particular to a smart card and a method for accessing objects in the smart card. Background technique [0002] Due to the disadvantages of existing magnetic stripe cards such as poor security, banks at home and abroad are gradually adopting smart cards (CPU cards) instead of magnetic stripe cards, and have issued a large number of smart cards individually or in conjunction with industry users. Generally speaking, a smart card is a plastic card that contains an embedded integrated circuit (IC). The integrated circuit contains a miniature central processing unit (CPU), ROM, RAM and other auxiliary peripheral circuits. The integrated circuit has similar capabilities as a computer. , Such as: running programs, processing input and output data. When using the above CPU card, external power supply and other interface devices are required. [0003] In order to regulate the migration ...

Claims

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Application Information

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IPC IPC(8): G06K17/00G06F9/44
Inventor 徐晋耀孟宏文杨辅祥李春欢柏建宁
Owner CHINA UNIONPAY
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