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A smart card and its file management method

A file management method and smart card technology, applied in the field of smart cards and their file management, can solve the problems of undistinguished management of files and inability to guarantee file security, and achieve the effect of enhancing security and facilitating user experience

Active Publication Date: 2022-04-01
HENGBAO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing mobile devices differentiate applications into trusted applications and untrusted applications. Trusted applications are usually stored in smart cards, and different management permissions are used to manage trusted applications and untrusted applications. However, the files in the mobile device are not managed differently, so the security of the files cannot be guaranteed

Method used

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  • A smart card and its file management method
  • A smart card and its file management method
  • A smart card and its file management method

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Embodiment Construction

[0020] The technical solutions in the embodiments of the present application are clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

[0021] This application proposes a mobile device 100, including the following components:

[0022] Smart card 110, memory 120 and processor 130, wherein the structure of smart card 110 is as follows figure 2 As shown, it includes a security chip 210 and an on-chip processor 220 . Security chip 210 stores encrypted service data file table and encrypted service data file, and on-chip processor 220 executes such as image 3 In the shown method, further, the on-chip operating system ...

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PUM

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Abstract

The present application discloses a smart card and its file management method, wherein the method includes the following steps: in response to a user or a trusted application accessing an encrypted service data file, querying the encrypted service data file table stored in the security chip, and judging whether the user or Whether the trusted application has access rights; when it is judged that there is access right, the creation time information is obtained from the file header of the encrypted business data file, and it is judged whether the user or the trusted application is authorized; if authorized, the user or the trusted application is allowed to access The encrypted business data file. Through this application, the unified management of smart card system files can be completed, and the security of smart cards can be enhanced. At the same time, because it sets the on-chip operating system layer, users and applications do not perceive its existence, which is convenient for users to experience.

Description

technical field [0001] The application relates to the field of computers, in particular to a smart card and a file management method thereof. Background technique [0002] With the development of mobile technology, smart card products have become one of the most popular embedded products, widely used in telecommunications, finance, health care, social security and other industries closely related to people's lives. With the continuous emergence of various market demands, a business model in which one card carries multiple applications at the same time has begun to appear. For operators, this multi-application card can significantly reduce the cost of card issuance, so it is gradually becoming a smart card product development mainstream direction. [0003] Existing mobile devices differentiate applications into trusted applications and untrusted applications. Trusted applications are usually stored in smart cards, and different management permissions are used to manage trust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/62G06F21/79
CPCG06F21/6227G06F21/79G06F2221/2107G06F2221/2141
Inventor 钱京崔可尤洪松何碧波底明辉
Owner HENGBAO