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Bundling method and apparatus for files into host files

A technology of host files and files, applied in the field of communication, can solve problems such as bundling of files that cannot be large in size, false positives, small redundant space capacity of PE file structure, etc., so as to achieve the effect that it is not easy to be reported

Active Publication Date: 2015-12-16
三六零数字安全科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, when the above method is used, since the redundant space capacity in the PE file structure is small and discontinuous, it is more suitable for bundling scattered small files, and usually cannot be bundled for larger files.
Moreover, since the redundant space in the PE file structure is basically concentrated in the header of the PE file, all the bundled files are concentrated in the header of the PE file, and the amount of information is too concentrated, so it is easy to be detected by the format checking tool Reporting errors for exceptions, resulting in false positives

Method used

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  • Bundling method and apparatus for files into host files
  • Bundling method and apparatus for files into host files
  • Bundling method and apparatus for files into host files

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Embodiment Construction

[0024] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0025] figure 2 A method for bundling files into a host file provided by an embodiment of the present invention is shown. Specifically, the host file may be a PE file, or other files having a similar structure to the PE file. In the following description, the host file is a PE file as an example for description.

[0026] In order to facilitate understanding, first briefly introduce the structure of the PE file. A PE file mainly...

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Abstract

The invention discloses a bundle method and a device for a file to a host file. The host file comprises a plurality of bytes which are arrayed in a certain order and used for storing data. The device comprises a converting unit, a bundle unit and a modifying unit. According to the bundle method and the corresponding device for the file to the host file, a last byte of the host file is bundled with a file with an arbitrary length, so that the problems in the prior art that only small files can be bundled, and errors happen caused by the information on the head portion of the host file is too concentrated, large files which can be bundled with arbitrary lengths can be obtained, and the errors can not occur easily.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for binding files into host files. Background technique [0002] File bundling can also be called file hiding. The specific method is to bundle other files in one file to achieve the effect of reducing the number of files or hiding some files. Wherein, the file bundled with other files is called a host file, and the file bundled into the host file is called a bundled file. [0003] Because there is a lot of redundant space in the PE file structure itself, PE files are often used as host files, in which other files are bundled. The usually relatively large free space in the PE file is: (1) the redundant space generated by data alignment between adjacent section tables; (2) the redundancy generated by data alignment after the last section table of the PE file space. (3) The DOSStub in the PE structure is reserved for DOS programs, and it will only play a real role w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30
Inventor 马茂刚
Owner 三六零数字安全科技集团有限公司
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