Two-dimension code anti-counterfeiting printing and verification method adopting digital watermark technology

A technology of anti-counterfeiting printing and watermark technology, which is applied in the field of two-dimensional code anti-counterfeiting printing and verification, can solve the problems that two-dimensional code encryption technology does not have anti-counterfeiting function, two-dimensional code does not have anti-counterfeiting function, two-dimensional code is easy to forge and other problems, and achieves The effect of fast fast and effective encryption

Inactive Publication Date: 2014-09-24
CHANGSHA ZIOSUP NETWORK TECH
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] However, due to the openness of the two-dimensional code algorithm and software, the information carried by the two-dimensional code is transparent, and it is easy for people to decode and obtain the initial data.
In this way, the two-di...

Method used

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  • Two-dimension code anti-counterfeiting printing and verification method adopting digital watermark technology
  • Two-dimension code anti-counterfeiting printing and verification method adopting digital watermark technology
  • Two-dimension code anti-counterfeiting printing and verification method adopting digital watermark technology

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Embodiment Construction

[0022] Such as figure 1 As shown, a two-dimensional code anti-counterfeiting printing method using digital watermarking technology of the present invention comprises the following steps,

[0023] Step S101: Perform DCT transformation on the two-dimensional code picture, and pair the obtained DCT coefficients.

[0024] Step S102: Divide the two-dimensional code image into pixel blocks, and determine the embedded watermark information corresponding to each pixel block. In this embodiment, the picture is first divided into 8*8 pixel blocks, all the blocks of the image are divided into disjoint sets PP and Pq, and k=0, then the watermark information embedded in each block pair is

[0025] Φ P ( v ) = 1 , Δ F p ...

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Abstract

The invention relates to a two-dimension code information hiding anti-counterfeit technology, in particular to a two-dimension code anti-counterfeiting printing and verification method adopting a digital watermark technology. The two-dimension code anti-counterfeiting printing and verification method comprises the steps of: performing DCT conversion on a two-dimension code image to obtain a DCT coefficient pair; dividing the pixels of the two-dimension code image into blocks, and determining information of part of a watermark to be embedded into each block; selecting positions according to blocks, and embedding the watermark, thus obtaining the two-dimension code image embedded with the watermark. When in verification, the two-dimension code image with watermark is subject to DCT conversion to obtain the DCT coefficient pair, and thereby the watermark is obtained; and the obtained watermark is compared with the extracted watermark to judge whether falsifying occurs. According to the method provided by the invention, the two-dimension code can be effectively and rapidly encrypted, and also can be accurately verified whether being falsified or not.

Description

technical field [0001] The invention relates to a two-dimensional code information hiding anti-counterfeiting technology, in particular to a two-dimensional code anti-counterfeiting printing and verification method using digital watermarking technology. Background technique [0002] Two-dimensional codes are widely used due to their large information density and information capacity. Considering the security and confidentiality of the information carried by the two-dimensional code and the anti-counterfeiting requirements, the encryption technology of the two-dimensional code was produced. [0003] Taking a train ticket as an example, the original data of a train ticket, such as time, departure place, destination, bearer's name and ID number, etc., are encrypted by an encryption algorithm, and then a QR code (the lower right corner of the train ticket) is generated, This is the two-dimensional code encryption technology. When the QR code is decoded, the decoded data is a l...

Claims

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Application Information

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IPC IPC(8): G06K19/06G06Q30/00
Inventor 赵俊夫赵起
Owner CHANGSHA ZIOSUP NETWORK TECH
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