Files hiding method based on NTFS disk files system structure

A system structure and file hiding technology, applied in the direction of using undetectable carrier information, preventing unauthorized use of memory, carrier index/addressing/timing/synchronization, etc., to achieve high security effects

Inactive Publication Date: 2003-08-06
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

This method adopts the method of intercepting messages, so it can only realize file hiding under the current operating system

Method used

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  • Files hiding method based on NTFS disk files system structure
  • Files hiding method based on NTFS disk files system structure
  • Files hiding method based on NTFS disk files system structure

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Embodiment Construction

[0010] The NTFS file system stores data based on objects and attributes. Files and directories are objects, and the content, size, creation time, etc. of files and directories are attributes. An object can have multiple properties, even dataflow properties. Data streams are further divided into unnamed streams and named streams. In all file viewing modes of the operating system, only the unnamed stream of the file is displayed, and the size of the file only involves the size of the unnamed data stream. As a file system, the named stream allows to connect to the additional data in the file, which cannot be seen in the file browser, and can only be accessed by using the file I / O function in the Windows SDK through the "file name: stream name" method. . As mentioned earlier, a directory is also an object, so it also supports multiple data streams. If we copy the data of the file to be hidden to a named stream in the root directory, and then delete the source file, the file can...

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Abstract

The invention discloses a file hiding method based on NTFS disk file system structure, it includes following steps: (1) eliminates the illegal characters in the whole route name of the pending hidingfiles and gets a unique flow name; (2) founds a data flow of the root directory and its name is the flow name in steps (1); (3) copies the content sof files into the flow; (4) deletes the pending hiding files; (5) records the whole route information of the files.

Description

technical field [0001] The invention belongs to the technical field of computer applications, and in particular relates to a file hiding method based on the NTFS disk file system structure. Background technique [0002] Chinese patent 02115105.9 published on August 26, 1998 is a method for hiding data without distortion. It takes advantage of the redundancy in the image to embed a large amount of information in the image while ensuring that the image with embedded information will not be distorted. Hidden information security relies heavily on image files. If the image file is altered, it may result in complete loss of hidden information. The existing file hiding methods are: [0003] (1) The data of the file to be hidden is merged into another file, such as a system file or an image file (called "host file"), and the host file itself is not destroyed to achieve the purpose of hiding. The security of this method is not high enough. If the host file and the merging method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/14G11B27/11
Inventor 刘玉熊祖彪朱光喜饶炤骅李伟霞王长强刘洋徐一新
Owner HUAZHONG UNIV OF SCI & TECH
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