Text carrier-free information hiding method based on tag model

An information hiding, carrierless technology, applied in the field of communication, can solve the problem of low hidden capacity, and achieve the effect of improving the hidden capacity and ensuring the success rate

Active Publication Date: 2018-01-19
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a method for hiding text without carrier information based on a label model, which is used to solve the technical problem of low hiding capacity of the carrierless information hiding method in the prior art, and at the same time ensure the success rate of hiding

Method used

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  • Text carrier-free information hiding method based on tag model
  • Text carrier-free information hiding method based on tag model
  • Text carrier-free information hiding method based on tag model

Examples

Experimental program
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Embodiment 1

[0058] This embodiment provides a method for hiding secret information and extracting secret information. attached Figure 5A , 5B It is a structural schematic diagram of Embodiment 1 of the present invention.

[0059] For example to hide secret information: People's Republic of China. Specific steps are as follows:

[0060] The first step: First, perform word segmentation processing to obtain the keyword sequence: China, the people, the Republic, established. The keyword lengths in the keyword sequence are 2, 2, 3, and 3 in sequence.

[0061] Step 2: Specify the recipient, get the tag feature according to the recipient and some additional random quantities such as sending time, sending address, etc., and get the tag sequence from the tag library according to the tag feature, assuming that the tag feature here is generated as 4, you can get it from the tag Starting from the fourth position in the library, the step size is 4 to obtain the label sequence in turn: 16, 45.......

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Abstract

The invention provides a text carrier-free information hiding method based on a tag model. The method comprises the following steps that: collecting texts, and establishing indexes; hiding secret information: preprocessing the secret information to obtain the keyword sequence of the secret information; using the Unicode of Chinese characters as a secret information tag, and carrying out calculation according to the corresponding features of a receiver to obtain a secret information tag sequence; constructing a header file and a cipher containing text; through text index entries, selecting target text information corresponding to the header file and the cipher containing text one by one from a text library; and arranging all target text information in sequence, and sending the target text information to the receiver as a hidden text. By use of the method, while a hiding success rate is guaranteed, hiding capacity is improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a label model-based method for hiding text without carrier information. Background technique [0002] There are already a considerable number of methods for information hiding without a carrier. The method of text information hiding without carrier mainly uses the normal text data collected from the network as the text database. Divide the information to be hidden into "keywords", then set a "secret label" containing the characteristics of the recipient to guide the extraction of "keywords", and search for texts that match the characteristics of "secret labels" + "keywords" in the text library to generate Contains encrypted data. After receiving the encrypted text, the receiver obtains the features according to its own features, and finally extracts the secret information according to the hidden label. Although the existing carrierless information hiding methods can res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/10G06F21/16G06F17/27G06F17/30H04L29/06
Inventor 付章杰吉红勇孙星明
Owner NANJING UNIV OF INFORMATION SCI & TECH
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