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A base conversion method for large data in information hiding technology

A technology of information hiding and binary conversion, applied in the field of information processing, can solve the problem of "character bit" overflow, and achieve the effect of solving vector character bit overflow, overcoming the limitations of converting binary values, and achieving universality.

Active Publication Date: 2020-06-05
NORTHEASTERN UNIV LIAONING
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a segmented vertical long division method for large data base conversion, to solve the overflow problem of "character digits" of large number base conversion existing in the prior art

Method used

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  • A base conversion method for large data in information hiding technology
  • A base conversion method for large data in information hiding technology
  • A base conversion method for large data in information hiding technology

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Embodiment Construction

[0024] The present invention provides a large data base conversion method used in information hiding technology, which includes the following steps in the implementation of information hiding technologies such as steganographic algorithms based on modified multi-directional coding technology and steganographic algorithms based on diamond coding. Method implementation flow chart as figure 2 Shown:

[0025] (1) Initial data preprocessing;

[0026] Utilizing the large number system conversion requires randomly generating a uniformly distributed pseudo-random original data sequence X, and preprocessing the generated random large number sequence, that is, using the length of X and adopting the method of segmenting the adaptive vector string to obtain the corresponding feature segment sequence set. Also, define a new base value y.

[0027] In this way, the original data sequence X, the length L, the total number of segments J and the total number of bits K for each segment can b...

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Abstract

The invention belongs to the field of information processing technology and discloses a base conversion method for big data in information hiding technology. Analyze the impact of large-number base conversion operations on the relative complexity between arbitrary base sequences and vector character digits, and obtain a complete segmented sequence arranged by bit weight by estimating the memory space. Based on the segmented vertical long division operation The rule uses the iteration quotient and the new base value to obtain the new base feature sequence, and effectively performs arbitrary base conversion of large numbers. The invention solves the problem of vector character bit overflow, breaks the limitations of built-in conversion, overcomes the limitations of converting base values, and realizes the versatility of conversion.

Description

technical field [0001] The invention belongs to the technical field of information processing, and relates to a base conversion method for large data in information hiding technology. Background technique [0002] The information hiding technology based on information security is to hide information in the original carrier through a specific method, and then hide the "existence fact" of the information. It is mainly used in confidential communications such as banking systems and military intelligence agencies. Currently commonly used information steganography algorithms based on modified multi-directional coding technology (EMD, Exploiting Modification Direction) need to convert the original binary secret information into other binary sequences required by the method before embedding the secret information. Steganography based on diamond coding The algorithm needs to embed an arbitrary base secret information into the pixel. It can be seen that realizing the correct and rap...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/60G06F7/58
CPCG06F7/582G06F21/602
Inventor 张华王蕊
Owner NORTHEASTERN UNIV LIAONING