CN102916804B - Two-dimension code coding and decoding method and device based on local color verification - Google Patents

Abstract

The invention discloses a two-dimensional code encoding method and device based on local color verification, a decoding method and a device, wherein the encoding method is to randomly generate dyeing area data according to a previously defined dyeing area encoding and decoding table, and use the generated dyeing area The data is encrypted as a key to obtain the generation information of the two-dimensional code; then the black and white image of the two-dimensional code is generated by the two-dimensional code generation algorithm; finally, the black and white image of the two-dimensional code is dyed according to the dyed area data to obtain the partial color two-dimensional code image. The decoding method is to read the dyed area data on the two-dimensional code image, and use the standard two-dimensional code decoding algorithm to decode; the decoded information is decrypted by the decryption algorithm with the dyed area data as the key, and the original two-dimensional code image is obtained. information. On the basis of the original black and white two colors, the invention adds dyed area information, can expand the coding space of the two-dimensional code, and increases the difficulty of being counterfeited.

Description

A two-dimensional code encoding and decoding method and device based on local color verification

technical field

The invention relates to the field of two-dimensional code coding and decoding research, in particular to a two-dimensional code coding method, coding device, decoding method and decoding device based on local color verification.

Background technique

Two-dimensional code is to record data symbol information with a specific geometric figure distributed on a plane (two-dimensional direction) according to a certain rule, ingeniously using "0", The concept of "1" bit stream uses several geometric shapes corresponding to binary to represent text and numerical information, which can be automatically read by image input equipment or photoelectric scanning equipment to realize automatic information processing. It has some common features of barcode technology: each code system has its specific character set; each character occupies a certain width; it has certain verification functions, etc. At the same time, it also has the characteristics of automatic identification of information in different rows, and processing of graphic rotation changes.

The two-dimensional barcode has the characteristics of high confidentiality, high traceability, strong damage resistance, large backup, and low cost. It has been widely used in forms, security and confidentiality, tracking, licenses, inventory, data backup, etc. . But because the encoding/decoding technology is public, the threshold for making fake QR codes is also very low. In addition, the standard two-dimensional code version uses black and white and two colors, and its coding space is also limited.

Therefore, there is a need for an effective anti-counterfeiting mark, which can increase the difficulty of counterfeiting the two-dimensional code on the one hand, and expand the coding space of the two-dimensional code on the other hand to ensure that the two-dimensional code is not tampered with.

Contents of the invention

The main purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and provide a two-dimensional code encoding method, encoding device, decoding method and decoding device based on local color verification. The above encoding and decoding device and method are based on local color verification. Experimentally, on the basis of the original black and white two colors, the dyed area information is added, which can expand the coding space of the two-dimensional code and increase the difficulty of the two-dimensional code being counterfeited.

The purpose of the present invention is achieved through the following technical solutions:

A two-dimensional code encoding method based on local color verification, comprising the following steps:

(1) On the two-dimensional code template, according to the pre-defined dyeing area code decoding table, the dyeing area data is randomly generated, and the dyeing area data includes the number of dyed areas, the shape of each dyed area, and the color of each dyed area;

(2) Encrypt the original information of the QR code with the dyed area data generated in step (1) as a key to obtain the generation information of the QR code;

(3) Using the two-dimensional code generation information obtained in step (2) to generate a black-and-white image of the two-dimensional code through the two-dimensional code generation algorithm;

(4) Dye the black-and-white image of the two-dimensional code obtained in step (3) according to the two-dimensional code template formulated in step (1) and the generated dyed area data, and finally obtain a partial color two-dimensional code image.

Preferably, in the step (1), the pre-defined coding and decoding table of the stained area refers to the coding and decoding table established in advance according to the possible shapes and colors of the stained area. In the shape coding and decoding table, each shape is defined Corresponding to a numerical value, also in the color coding decoding table, define that each color corresponds to a numerical value, and then together with the number of dyed regions, establish the key vector of <the number of dyed regions i, the shape S of each dyed region, and the color C of each dyed region> .

Preferably, in the step (2), the original information of the two-dimensional code includes hidden information that needs to be encrypted and plaintext information that does not need to be encrypted, and the hidden information that needs to be encrypted is encrypted with the dyed area data generated in step (1) as a key. Encrypt, and then combine the obtained encrypted hidden information with the plaintext information that does not need to be encrypted to obtain the two-dimensional code generation information.

Furthermore, in the step (2), the hidden information to be encrypted is used as the key vector of <i, S, C> generated in the step (1), according to the existing public two-way encryption algorithm (no need to specify One, can be selected according to the existing technology) to encrypt to obtain encrypted hidden information.

Furthermore, in the step (2), the plaintext information and the encrypted hidden information are combined using the following algorithm: record the plaintext information as M ₁ , record the encrypted hidden information as M ₂ , and use the delimiter w to splice. A simple splicing method is two-dimensional code information M=M ₁ +w+M ₂ , and the ciphertext information follows the plaintext information. In this way, the two-dimensional code generator can perform simple string splicing of plaintext and ciphertext Work. Another simple splicing method is insertion splicing. The two-dimensional code information M=M ₁₁ +M ₂₁ +M ₁₂ +M ₂₂ ... inserts the hidden information into the plaintext information according to the fixed insertion position. This idea can also be obtained by The two-dimensional code generator performs string concatenation of plaintext and ciphertext.

Preferably, in the step (3), the following two-dimensional code generation algorithm is used to generate the two-dimensional code image from the two-dimensional code generation information: according to the two-dimensional code generation information obtained in step (2), a standard two-dimensional code is used Generate algorithms (such as generation algorithms of QR code PDF417, Datamatrix, Maxicode, QR Code, Code 49, Code16K, Vericode, Ultracode) to generate standard QR code black and white images.

A two-dimensional code decoding method based on local color verification, comprising the following steps:

(1) Read the dyed area data on the two-dimensional code image according to the pre-defined dyed area encoding and decoding table. The dyed area data includes the number of dyed areas, the shape of each dyed area, and the color of each dyed area;

(2) Read the two-dimensional code image, take the colored area in the partially dyed two-dimensional code image as the black area, and then treat the two-dimensional code image as a standard black and white two-dimensional code image, and use the standard two-dimensional code decoding algorithm decoding;

(3) Decrypt the decoded information with the dyed area data as the key through the decryption algorithm to obtain the original information of the two-dimensional code image.

Preferably, in the step (2), an existing standard two-dimensional code decoding algorithm (such as two-dimensional code PDF417, Datamatrix, Maxicode, QR Code, Code 49, Code 16K, Vericode, Ultracode decoding algorithm) is used to decode the original The two-dimensional code image information is decoded.

Preferably, in the step (3), the decoded information includes encrypted hidden information and unencrypted plaintext information, and the steps are as follows: firstly, the decoded information is split into encrypted hidden information and unencrypted plaintext information by a splitting algorithm. Encrypted plaintext information; then use the decryption algorithm to decrypt the encrypted hidden information using the dyed area data generated in step (1) as a key, and finally obtain the original information of the two-dimensional code image.

Furthermore, in the step (3), the following algorithm is used to split the plaintext information and the encrypted hidden information: in the simple splicing information of the two-dimensional code obtained in the step (2), search for plaintext and encrypted information. The splitting of ciphertext is based on the delimiter (denoted as w). The delimiter is followed by plaintext data and ciphertext data respectively. A simple splitting method is based on the two-dimensional code information M=M ₁ +w+M ₂ , Split plaintext data M ₁ and ciphertext data M ₂ . In the step (2) to obtain the two-dimensional code insertion splicing information, according to the two-dimensional code information M = M ₁₁ + M ₂₁ + M ₁₂ + M ₂₂ ..., restore M ₁ = M ₁₁ + M ₁₂ + M ₁₃ ... ..., M ₂ =M ₂₁ +M ₂₂ +M ₂₃ ..., restore plaintext data M ₁ and ciphertext data M ₂ .

Preferably, in the step (3), the ciphertext data obtained in the step (2) is decrypted by using the dyed area data as a key through a standard two-way decryption algorithm.

A two-dimensional code encoding device based on local color verification, comprising:

A dyeing area data generation device, used to generate a dyeing area in the two-dimensional code template according to a pre-defined dyeing area encoding and decoding table;

The two-dimensional code generating device includes an encryption module and a two-dimensional code encoding module, the encryption module is connected to the two-dimensional code encoding module, and the two-dimensional code generating device is connected to the stained area data generating device; the encryption module is used for Encrypt the hidden information to be encrypted with the dyed area data as the key; the two-dimensional code encoding module is used to generate the two-dimensional code black and white image by encrypting the two-dimensional code generation information obtained after the encryption module is encrypted;

The two-dimensional code color image generation device dyes the two-dimensional code black-and-white image generated by the two-dimensional code generation device according to the data of the dyed area data generation device to obtain a partially dyed two-dimensional code color image.

Preferably, the two-dimensional code generating device further includes a splicing module, which is used to splice plaintext information that does not need to be encrypted and encrypted hidden information, and then send the spliced data to the two-dimensional code encoding module; The combination module is respectively connected with the encryption module and the two-dimensional code encoding module.

A two-dimensional code decoding device based on local color verification, comprising:

The two-dimensional code dyeing area reading device is used to read the dyeing area data in the two-dimensional code image according to the previously defined dyeing area encoding and decoding table;

Two-dimensional code reading device, including:

A reading module for reading two-dimensional code images;

The two-dimensional code decoding module is used to decode the two-dimensional code image information read by the reading module;

The decryption module is used to decrypt the encrypted hidden information after decoding with the dyed area data as the key;

The reading module, the two-dimensional code decoding module and the decryption module are connected in sequence.

Preferably, the two-dimensional code reading device further includes a splitting module, which is used to split the information decoded by the two-dimensional code decoding module into unencrypted plaintext information and encrypted hidden information; the splitting module Connect with the two-dimensional code decoding module and the decryption module respectively.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

1. The present invention uses the data of the dyed area as the key of the hidden information of the two-dimensional code to pair the local color of the two-dimensional code with the data of the two-dimensional code, so as to realize the monitoring and supervision of the data. The encoding method and decoding method of the present invention The encoding device and the decoding device have the same or corresponding technical features: the encryption or decryption process is performed using the dyed area data as the key for the hidden information of the two-dimensional code. On the one hand, the present invention can expand the coding space of the two-dimensional code through partial color; on the other hand, the two-dimensional code reading device of the present invention can be used to read the information hidden in the two-dimensional code, which ensures the integrity of the two-dimensional code , security and confidentiality, and enable two-dimensional codes to carry hidden information, strengthen the anti-counterfeiting and uniqueness of two-dimensional codes, open up new application fields for two-dimensional codes as data labels, and make two-dimensional codes in the circulation process In every link, the authenticity of the QR code can be checked to prevent counterfeiting.

2. The present invention can be widely used in various industries such as commodity circulation, production process control, and management process control that require label assistance. For example, suppliers use local color superposition algorithms to add product information and anti-counterfeiting information on the basis of ordinary black and white two-dimensional codes. Generate a partially colored QR code. In the market, consumers read the product information in the QR code through a general-purpose QR code reading program; suppliers use professional reading equipment to read the partially colored hidden information in the QR code to achieve data traceability, Sales monitoring and other management.

Description of drawings

FIG. 1 is a schematic structural diagram of a two-dimensional code encoding device according to Embodiment 1 of the present invention.

FIG. 2 is a schematic structural diagram of a two-dimensional code decoding device according to Embodiment 1 of the present invention.

Fig. 3 is a flow chart of the encoding method and decoding method in embodiment 1 of the present invention in the application of commodity anti-channeling.

Detailed ways

The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

Example 1

The two-dimensional code encoding device based on local color verification in this embodiment is shown in Figure 1, the device includes a dyeing area data generating device, a two-dimensional code generating device and a two-dimensional code color image generating device, the two-dimensional code generating device The device includes an encryption module, a splicing module and a two-dimensional code encoding module connected in sequence.

The dyeing area data generation device is used to generate the relevant data of the dyeing area (including the number, color, shape, etc.) of the dyeing area in the two-dimensional code template according to the pre-defined dyeing area encoding and decoding table.

The encryption module is used to encrypt the hidden information to be encrypted by using the dyed area data as a key.

The merging module is used to merging the unencrypted plaintext information and the encrypted hidden information, and then send the merging data to the two-dimensional code encoding module.

The two-dimensional code encoding module is used to generate standard two-dimensional code black and white images from encrypted hidden information and unencrypted plaintext information. The two-dimensional code encoding module can be generated by the generation algorithm of two-dimensional code PDF417, Datamatrix, Maxicode, QR Code, Code 49, Code 16K, Vericode, and Ultracode.

The two-dimensional code color image generation device dyes the two-dimensional code black-and-white image generated by the two-dimensional code generation device according to the dyed area, quantity and color obtained by the dyed area data generation device, and obtains a partially dyed two-dimensional code color image.

In this embodiment, the two-dimensional code decoding device based on local color verification is shown in Figure 2, which includes a two-dimensional code dyeing area reading device and a two-dimensional code reading device; the two-dimensional code decoding device includes sequentially connected reading devices Extraction module, two-dimensional code decoding module, splitting module and decryption module.

The two-dimensional code dyeing area reading device is used to read the dyeing area data in the two-dimensional code image according to the pre-defined dyeing area encoding and decoding table; the data of the dyeing area includes the number, color, shape, etc. of the dyeing area.

The reading module is used to read the two-dimensional code image.

The two-dimensional code decoding module is used to decode the two-dimensional code image information read by the reading module.

The splitting module is configured to split the decoded information of the two-dimensional code image into unencrypted plaintext information and encrypted hidden information.

The decryption module is used to decrypt the encrypted hidden information split by the split module by using the dyed area data as a key.

FIG. 3 is a schematic diagram of this embodiment in the application of commodity anti-channeling. As shown in the figure, after the present embodiment completes the coding process according to the coding method shown in Figure 3, the manufacturer pastes or prints a partial color two-dimensional code on the product and its packaging, and the manufacturer, consumer and sales inspection department can Decode the barcode and QR code according to the decoding method shown in the figure and output the result. Specifically, the encoding method and decoding method adopted in this embodiment are as follows.

The two-dimensional code coding method based on local color verification in the present embodiment comprises the following steps:

(1) On the QR code template (rectangular or square), according to the pre-defined dyeing area coding and decoding table, the dyeing area data is randomly generated. The dyeing area data includes the number of dyed areas, the shape of each dyed area, and the color of each dyed area . The pre-defined color coding and decoding table refers to the coding and decoding table established in advance according to the possible shapes and colors of the coloring area. In the shape coding and decoding table, it is defined that each shape corresponds to a value. Also in the color coding and decoding table , define that each color corresponds to a numerical value, and then together with the number of dyed regions, establish the key vector of <the number of dyed regions i, the shape S of each dyed region, and the color C of each dyed region>.

(2) The original information of the two-dimensional code includes the hidden information M ₁ that needs to be encrypted and the plaintext information M ₂ that does not need to be encrypted; use the two-way encryption algorithm to use the hidden information M ₁ with the dyed area data vector <i, S, C> as the key Encrypt to obtain the encrypted hidden information M ₁ ′=F(M ₁ ,<i,S,C>); combine M ₁ ′ and M ₂ through the combination algorithm to obtain the two-dimensional code generation information M=P(M ₁ ', M ₂ ). A simple splicing method is to use the separator w for splicing. The two-dimensional code information M=M ₁ +w+M ₂ , and the ciphertext information follows the plaintext information. In this way, the plaintext and Simple string concatenation of ciphertexts works. Another simple splicing method is insertion splicing. The two-dimensional code information M=M ₁₁ +M ₂₁ +M ₁₂ +M ₂₂ ... inserts the hidden information into the plaintext information according to the fixed insertion position. This idea can also be obtained by The two-dimensional code generator performs string concatenation of plaintext and ciphertext.

(3) Pass the QR code generation information obtained in step (2) through standard QR code generation algorithms (such as QR code PDF417, Datamatrix, Maxicode, QR Code, Code 49, Code 16K, Vericode, Ultracode generation algorithms), Generate a standard black and white image of a QR code.

(4) Dye the black-and-white image of the two-dimensional code obtained in step (3) according to the two-dimensional code template formulated in step (1) and the generated dyed area data, and finally obtain a partial color two-dimensional code image.

In this embodiment, the two-dimensional code decoding method based on local color verification includes the following steps:

(1) Read the dyed area data on the two-dimensional code image according to the pre-defined dyed area encoding and decoding table. The dyed area data includes the number of dyed areas i, the shape S of each dyed area, and the color C of each dyed area. Get the stained area data vector <i,S,C>.

(2) Read the two-dimensional code image, take the colored area in the partially dyed two-dimensional code image as the black area, and then treat the two-dimensional code image as a standard black and white two-dimensional code image, and use the standard two-dimensional code decoding algorithm Decode to get information M.

(3) Obtain the encrypted hidden information M ₁ ′ and the unencrypted plaintext information M ₂ through the split algorithm <M ₁ ′, M ₂ >=P ^-1 (M); and then decrypt M ₁ ′ through the decryption algorithm Use the dyed area data vector <i, S, C> as the key to decrypt, get the hidden information M ₁ before encryption, and output the original information M ₁ and M ₂ .

Among them, the two-dimensional code can include the following information: hidden information includes anti-counterfeiting information, password information and identification information; it can be product supplier information, product distributor information, product origin information, product weight, delivery time information, product expiration date, product batch number and the total quantity information of the products; information on the point of sale of certificates and bills, validity period, user or personal information, amount, issuing unit, receiving unit, issuing time, specifications, information on the place to and from; valid period of the certificate, information on the reviewing unit, and the owner of the certificate or unit information, etc. Plaintext information can be product serial number, basic product information, basic product introduction, product supplier information, product distributor information, product origin information, product weight, delivery time information, product validity period, product batch number and total product quantity information; , information on the point of sale, validity period, user or personal information, amount, issuing unit, receiving unit, issuing time, specifications, and destination information of the bill; validity period of the certificate, information on the reviewing unit, information on the person or unit of the certificate; or a specific password Key information used for encryption/decryption, etc.

In practical applications, consumers can read the product serial number in the barcode and the plaintext information of the QR code through mobile phones, PDAs, computer cameras, etc.

The sales inspection department can use the two-dimensional code reading device of this embodiment to read the plaintext information of the two-dimensional code, and read the hidden information of the two-dimensional code with the dyed area data as a key; it can check whether the product packaging is consistent with the product, Whether it is unpacked and sold; conduct product sales anti-smuggling management; conduct product authenticity identification.

In addition, the encoding and decoding device and method described in this embodiment can also be applied to tax invoices. After the encoding process is completed according to the encoding method described in this embodiment, the invoice printing unit prints a two-dimensional code on the invoice; consumers and related The inspection department can decode the barcode and the two-dimensional code according to the decoding method described in this embodiment and output the result as needed.

The content of the QR code includes plain text information: invoice issuing unit, commodity details, amount, taxpayer number, invoice date, etc., as well as hidden information: tax authority identification number, plain text information verification, etc.

Consumers can read the invoice serial number and the plaintext information of the QR code through mobile phones, PDAs, computer cameras, etc.

Relevant inspection departments can read the hidden information and plaintext information of the two-dimensional code through the two-dimensional code reading device described in this embodiment.

Therefore, the present invention can be widely used in various industries such as commodity circulation, production process control, and management process control that require label assistance. Generate a partially colored QR code. In the market, consumers read the product information in the QR code through a general-purpose QR code reading program; suppliers use professional reading equipment to read the partially colored hidden information in the QR code to achieve data traceability, Sales monitoring and other management.

The above-mentioned embodiment is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above-mentioned embodiment, and any other changes, modifications, substitutions, combinations, Simplifications should be equivalent replacement methods, and all are included in the protection scope of the present invention.

Claims (6)

1., based on a Quick Response Code coding method for local color verification, it is characterized in that, comprise the following steps:

(1) in Quick Response Code template, according to the pigmented section coding and decoding table of predefined, stochastic generation pigmented section data, pigmented section data comprise pigmented section quantity, the shape of each pigmented section, the color of each pigmented section; The pigmented section coding and decoding table of predefined refers to the coding and decoding table that the shape that may occur according to pigmented section in advance and color are set up respectively, in shape coding decoding table, define the corresponding numerical value of each shape, same in color coding decoding table, define each Color pair and answer a numerical value, then together with pigmented section quantity, set up < pigmented section quantity i, the key vector of each pigmented section shape S, each pigmented section color C>;

(2) Quick Response Code raw information comprises hiding Info of need encrypting and does not need the cleartext information encrypted, the pigmented section data generated using step (1) that hide Info that need encrypt are encrypted as key, then hiding Info and not needing the cleartext information encrypted to carry out split after the encryption obtained are obtained Quick Response Code information generated;

(3) Quick Response Code information generated step (2) obtained generates Quick Response Code black and white image by Quick Response Code generating algorithm;

(4) the Quick Response Code template formulated according to step (1) and the pigmented section data of generation dye to the Quick Response Code black and white image that step (3) obtains, and finally obtain partial color image in 2 D code.

2. the Quick Response Code coding method based on local color verification according to claim 1, it is characterized in that, in described step (2), hiding Info of need encrypting, with the <i that step (1) generates, the key vector of S, C>, be encrypted according to existing open bidirectional encipher algorithm, obtain hiding Info after encrypting;

In described step (2), hiding Info after cleartext information and encryption is carried out split and adopts following algorithm: the first adopts separator, namely cleartext information is designated as M ₁, hiding Info after encryption is designated as M ₂, use separator w to splice; The second adopts to insert splicing, is namely inserted into hide Info inside cleartext information according to fixing insertion position;

In described step (3), Quick Response Code information generated is generated image in 2 D code and adopts following Quick Response Code generating algorithm: PDF417, Datamatrix, Maxicode, QR Code, Code 49, Code 16K, Vericode or Ultracode.

3., based on a Quick Response Code coding/decoding method for local color verification, it is characterized in that, comprise the following steps:

(1) according to the pigmented section coding and decoding table of predefined, read the pigmented section data on image in 2 D code, pigmented section data comprise pigmented section quantity, the shape of each pigmented section, the color of each pigmented section;

(2) read image in 2 D code, using having color region as black region in the image in 2 D code of local dyeing, then image in 2 D code being used as standard black and white image in 2 D code, using standard two-dimensional code decoding algorithm to decode;

(3) decoded information comprises hiding Info of having encrypted and unencrypted cleartext information, and step is as follows: first by splitting algorithm, decoded information is split as hiding Info and unencrypted cleartext information of encryption; Adopt decipherment algorithm to be decrypted as key the pigmented section data that hiding Info of having encrypted generates using step (1) again, finally obtain the raw information of image in 2 D code.

4. the Quick Response Code coding/decoding method based on local color verification according to claim 3, it is characterized in that, in described step (3), hiding Info after cleartext information and encryption being carried out splitting is that split algorithm according in encryption algorithm decides, if employing separator, then find and carry out expressly and the separator of the fractionation foundation of ciphertext, before and after separator, be respectively clear data and encrypt data; If the insertion splicing adopted, then according to fixing insertion position, to restore respectively with cleartext information hiding Info;

In described step (3), to step (2) obtain encrypt data with pigmented section data for the two-way decipherment algorithm of key by standard is decrypted.

5., based on a Quick Response Code code device for local color verification, it is characterized in that, comprising:

Pigmented section data generating device, for generating pigmented section according to the pigmented section coding and decoding table of predefined in Quick Response Code template;

Quick Response Code generating apparatus, comprises encrypting module and Quick Response Code coding module, and described encrypting module is connected with described Quick Response Code coding module, and described Quick Response Code generating apparatus is connected with pigmented section data generating device; Encrypting module, for pigmented section data for hiding Info of need encrypting of double secret key is encrypted; Quick Response Code coding module, for generating the Quick Response Code black and white image of standard by encrypted hiding Info with the cleartext information of not encrypted;

Quick Response Code color image forming apparatus, the data according to pigmented section data generating device dye to the Quick Response Code black and white image that Quick Response Code generating apparatus generates, and obtain the Quick Response Code coloured image of local dyeing;

Die section, die section is used for the cleartext information not needing to encrypt and hiding Info of having encrypted to carry out split, then the data after split is sent to Quick Response Code coding module; Described die section is connected with encrypting module, Quick Response Code coding module respectively.

6., based on a Quick Response Code decoding device for local color verification, it is characterized in that, comprising:

Quick Response Code pigmented section reading device, reads pigmented section data in image in 2 D code for the pigmented section coding and decoding table according to predefined;

Quick Response Code reading device, comprising:

Read module, for reading image in 2 D code;

Quick Response Code decoder module, decodes for the image in 2 D code information read read module;

Deciphering module, for pigmented section data hiding Info and be decrypted for encryption after double secret key decoding;

Described read module, Quick Response Code decoder module, deciphering module connect successively;

Split module, for the information after Quick Response Code decoding module decodes being split into not encrypted cleartext information and encryptedly hiding Info; Described fractionation module is connected with Quick Response Code decoder module, deciphering module respectively.