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System and method for intercepting file access instruction based on Android platform

A file access and instruction technology, applied in the direction of instruments, electronic digital data processing, digital data protection, etc., can solve the problems of confidentiality, integrity and reviewability of file access operations that cannot be protected, and achieve good confidentiality and user experience Good, the effect of protecting confidentiality

Inactive Publication Date: 2015-04-15
NANJING CHUANGHE INFORMATION TECH
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the confidentiality, integrity and reviewability of file access operations cannot be protected in the native Android platform, the present invention provides a system for intercepting file access instructions based on the Android platform, including a dynamic link library, and the dynamic link library Set under the system.img flashing package of the Android platform, the dynamic link library includes preset policies for application programs to access files;

Method used

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  • System and method for intercepting file access instruction based on Android platform
  • System and method for intercepting file access instruction based on Android platform

Examples

Experimental program
Comparison scheme
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Embodiment

[0041] Taking the WeChat application as an example, describe the process of transparent encryption and decryption of files in the Android mobile phone platform.

[0042] First, configure the default policy for the application to access files. Table a is the list of application processes that need to be encrypted and decrypted, and table b is the list of file types that need to be encrypted and decrypted by each application in table a;

[0043] In this embodiment, only the WeChat application program is transparently encrypted and decrypted, and other programs are not processed. As can be seen from table a, the list of application programs that need to be processed in this embodiment includes the WeChat application program com.tentcent.mm, and it can be seen from table b that the list of file types that each application program in table a needs to process includes The WeChat app com.tentcent.mm needs to process db type files.

[0044] Table a:

[0045] com.tentcent.mm...

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Abstract

The invention discloses a system and a method thereof for intercepting a file access instruction based on an Android platform. According to the system, a dynamic link library is arranged in a system.img Hosmt of an original Android platform, a preferential loading configuration module is arranged in a Boot.img Hosmt of the Android platform, and the file access instruction is intercepted to the dynamic link library through the manner of preferentially loading the dynamic link library. Based on the system, an access control module, an encryption-decryption module and an audit module can be added, so that the confidentiality, the integrity and the auditability for file access operation can be protected.

Description

technical field [0001] The invention belongs to the field of information security of intelligent mobile terminals, and more specifically relates to a system and method for intercepting file access instructions based on an Android platform. Background technique [0002] With its powerful functions, smart phones have gradually penetrated into all aspects of people's daily life. Various applications running on smart phones, such as social applications such as Weibo and WeChat, tool applications such as GPS, Email, camera, and recording, etc. , is changing the way people live and communicate. How to protect these highly private application data is very important and critical for users. [0003] In the Android platform, the file access instruction refers to the file operation function when the Android application program accesses its own file, the application program is the main body, and its own file is the object. In the native Android platform, the operation process of the f...

Claims

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Application Information

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IPC IPC(8): G06F21/60
CPCG06F21/6218G06F2221/2107
Inventor 赵泓
Owner NANJING CHUANGHE INFORMATION TECH
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