Two-dimensional code data hiding method, data extraction method and device

A technology of data hiding and data extraction, which is applied in the field of barcodes to achieve effective authentication and improve security

Pending Publication Date: 2018-09-18
NEWLAND DIGITAL TECH CO LTD
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to propose a two-dimensional code data hiding method to solve the problem of using two-dimensional codes to carry some relatively concealed data under the framework of the standard code system, without affecting the existing two-dimensional code reading equipment and software. The standard-compliant data carried by the QR code is analyzed, and it can also support the extraction of hidden data by specially modified equipment or software

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  • Two-dimensional code data hiding method, data extraction method and device

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Embodiment Construction

[0043] The present invention will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.

[0044] refer to figure 1 As shown, one embodiment of the present invention discloses a two-dimensional code data hiding method, including the following steps:

[0045] S101: Obtain a two-dimensional code generation instruction, receive user data and hidden data;

[0046] There are many types of QR codes, among which QR codes, data Matrix, PDF417, and Hanxin codes are the most common. The embodiments of the present invention are not limited to these types of two-dimensional codes, and existing or future types of two-dimensional codes can be applied to this embodiment. In the embodiment of the present...

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Abstract

The invention discloses a two-dimensional code data hiding method. The two-dimensional code data hiding method comprises the following steps: acquiring a two-dimensional code generation instruction, and receiving user data and hiding data; generating a first bit sequence from the user data, and encrypting the hidden data according to a preset encryption mode to generate a second bit sequence; selecting at least one region according to a preset position sequence in a two-dimensional code data storage region, and implanting the second bit sequence into the first bit sequence of the region; and generating a two-dimensional code pattern. Based on the error correction function of two-dimensional codes and the principle that the damage of the two-dimensional code pattern can be tolerated to a certain degree, the hidden data can be embedded and extracted under the condition that the appearance, the structure, the function and the data of the two-dimensional code are not influenced completely.

Description

technical field [0001] The invention relates to the technical field of barcodes, in particular to a two-dimensional code data hiding and data extraction method and device. Background technique [0002] A two-dimensional code is a black and white graphic distributed on a plane with a specific geometric figure according to a certain rule. Electronic vouchers, information transmission, etc. [0003] QR code images are usually black and white square graphics. Taking QR codes as an example, the upper left corner, lower left corner, and upper right corner respectively present a square pattern like the word "Hui", which is used for scanning and positioning when decoding a QR code. And when the scanning software scans the two-dimensional code image at any angle, the data in the two-dimensional code image can be read correctly. [0004] QR codes can carry more data information, but according to the QR code standard, all the information it carries can be parsed. For users who need ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/06
CPCG06K19/06103
Inventor 刘峰罗闳訚王贤福
Owner NEWLAND DIGITAL TECH CO LTD
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