Two-dimensional code-based information hiding method

A technology of information hiding and two-dimensional codes, which is applied in the direction of record carriers, instruments, and induction record carriers used by machines, and can solve problems such as low efficiency, limited use of one-dimensional barcodes, and meaninglessness

Inactive Publication Date: 2017-06-09
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In places where there is no database and inconvenient networking, the use of one-dimensional barcodes is greatly restricted, and sometimes even becomes meaningless
In addition, it is very inconvenient and inefficient to use one-dimensional barcodes to represent Chinese characters.

Method used

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  • Two-dimensional code-based information hiding method

Examples

Experimental program
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Embodiment Construction

[0026] The present invention is based on the error correction performance of QR codes on the encoded original data, embeds the information that needs to be hidden into the code in the form of providing error correction based on bits, and then uses a specific extraction method for hidden information to extract, thereby achieving Purpose of conveying hidden information.

[0027] The method provided by the invention can use computer software technology to realize the process.

[0028] 1. The present invention mainly includes two aspects: embedding of hidden information and extraction of hidden information.

[0029] Embedding of hidden information consists of the following steps:

[0030] Step 1, according to the length and type of the general information in the two-dimensional barcode and the hidden information to be embedded in the calculation, increase the binary length of the BCH error correction code, and select the version and error correction code of the two-dimensional ba...

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Abstract

The present invention relates to a two-dimensional code-based information hiding method. The method is characterized by embedding the information needing to be hidden in the coding in a manner based on bits and providing the BCH error correction based on the error correction performance of the QR codes to the coded original data, then adopting an extraction method corresponding to the hiding information embedding to extract the hidden information, thereby achieving the purpose of transferring the hidden information. The present invention aims to provide the method having the following advantages that the information hiding and the two dimensional codes are combined, the two dimensional codes are used as the carriers of the information hiding, and the characteristics of a coding mechanism are utilized to write the hidden information directly; by using different decoders to read, the general decoders only can read the general information in the two dimensional codes but can not read the unexpected hidden information in the two dimensional codes, and only by utilizing the decoders designed by a special algorithm provided by the present invention, the hidden information in the two dimensional codes can be decoded.

Description

technical field [0001] The invention belongs to the field of information, in particular to an information hiding method based on a two-dimensional code. Background technique [0002] Since the appearance of one-dimensional bar code, it has been widely concerned by people, and its development speed is very rapid. Its use has greatly improved the speed of data collection and information processing, improved work efficiency, and made great contributions to the scientific and modernization of management. Due to the limitation of information capacity, one-dimensional barcode is only an identification of "items", not a description of "items". Therefore, the use of one-dimensional barcode has to rely on the existence of the database. In places where there is no database and inconvenient networking, the use of one-dimensional barcodes is greatly restricted, and sometimes even becomes meaningless. In addition, it is very inconvenient and inefficient to use one-dimensional barcodes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/14G06K19/06
CPCG06K7/1473G06K19/06075
Inventor 林馥戴敏
Owner WUHAN UNIV
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