CN102902997B - A kind of Quick Response Code hybrid coding, decoding device and method - Google Patents
A kind of Quick Response Code hybrid coding, decoding device and method Download PDFInfo
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- CN102902997B CN102902997B CN201210356366.3A CN201210356366A CN102902997B CN 102902997 B CN102902997 B CN 102902997B CN 201210356366 A CN201210356366 A CN 201210356366A CN 102902997 B CN102902997 B CN 102902997B
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Abstract
The invention discloses a kind of Quick Response Code hybrid coding method, comprise the following steps: (1) generates overlay area data in Quick Response Code template; (2) hiding Info of needing in Quick Response Code raw information to encrypt is obtained Quick Response Code information generated with overlay area data for key is encrypted; (3) Quick Response Code information generated is generated image in 2 D code by Quick Response Code generating algorithm; (4) the Quick Response Code template with overlay area data is covered on image in 2 D code.The invention also discloses coding/decoding method and coding, the decoding device of above-mentioned coding method.The present invention is encrypted and decrypted as hiding Info in double secret key Quick Response Code by overlay area data, effectively raise security and the confidentiality of Quick Response Code, and the deciphering that only just can realize on the basis obtaining the key on overlay area image in 2 D code, ensure that image in 2 D code just can be correctly decoded under only having destroyed overlay area prerequisite, enhance the security that Quick Response Code uses.
Description
Technical field
The present invention relates to a kind of coding, coding/decoding method and coding, decoding device, particularly a kind of Quick Response Code hybrid coding, decoding device and method.
Background technology
Quick Response Code is the chequered with black and white graphic recording data symbol information distributed in the two-dimensional direction according to certain rules with certain specific geometric figure, coding utilizes the concept of " 0 ", " 1 " bit stream forming computer-internal logical foundations dexterously, the geometrical body using several corresponding with scale-of-two, to represent word numerical information, is processed to realize information automatically by image input device or photoelectric scanning device automatically identifying and reading.
Contain much information because Quick Response Code has, the distinguishing feature such as coding range is wide, reliability of decode is high and use cost is low, be now widely used in every field.Because Quick Response Code cost is low, the technology of Code And Decode open, the threshold making the Quick Response Code of personation is also very low.Quick Response Code usually exposes and is printed on label, therefore uses Quick Response Code reading terminals can read the information of Quick Response Code very easily, for the activity such as prize drawing, integration of businessman, is difficult to judge whether this Quick Response Code is read and used.
Therefore, whether need a kind of effective solution, can ensure the security of Quick Response Code on the one hand, can identify Quick Response Code is on the other hand first time be read and use.
Summary of the invention
Fundamental purpose of the present invention is that the shortcoming overcoming prior art is with not enough, provides a kind of Quick Response Code hybrid coding, decoding device and method.Above-mentioned coding and decoding device and method on the basis of original Quick Response Code, mix key carry out Code And Decode, only could be decoded on the basis reading key by the 2 D code information of this hybrid coding device code, improves the security of Quick Response Code.
Object of the present invention is realized by following technical scheme:
A kind of Quick Response Code hybrid coding method, comprises the following steps:
(1) in Quick Response Code template, cover templates encode decoding table generate overlay area data according to the Quick Response Code of predefined, overlay area data comprise the character that overlay area quantity, the shape of each overlay area and each overlay area print; The Quick Response Code of predefined covers templates encode decoding table and refers to the coding and decoding table that the character that the shape that may occur according to overlay area in advance and overlay area print is set up respectively, in shape coding decoding table, define the corresponding numerical value of each shape, then the character printed together with overlay area and overlay area quantity, set up < overlay area quantity i, each overlay area shape S, the key vector of institute's lettering symbol C> on each overlay area;
(2) hide Info what need in Quick Response Code raw information to encrypt by cryptographic algorithm and be that key is encrypted with the overlay area data that step (1) generates, obtain Quick Response Code information generated;
(3) Quick Response Code information generated step (2) obtained generates image in 2 D code by Quick Response Code generating algorithm;
(4) cover the image in 2 D code that step (3) generates, the Quick Response Code template with overlay area data obtained in step (1) is covered on image in 2 D code.
Preferably, what Quick Response Code raw information described in step (2) comprised that cleartext information and needs encrypt hides Info, and encrypted hiding Info in cleartext information and step (2) is carried out split and obtained Quick Response Code information generated.
Further, in described cleartext information and step (2), encrypted hiding Info carries out split by separator;
The character adopting bidirectional encipher algorithm in step (1), the overlay area quantity of generation, the shape of each overlay area and each overlay area to print that hides Info in described step (2) is encrypted as key;
Quick Response Code generating algorithm in described step (3) is Quick Response Code PDF417(PortableDataFile417), Datamatrix, Maxicode, QRCode(QuickResponseCode), Code49, Code16K, Vericode or Ultracode produce algorithm.
A kind of Quick Response Code hybrid decoding method, comprises the following steps:
(1) read the overlay area data on image in 2 D code overlay area, overlay area data comprise the character that overlay area quantity, the shape of each overlay area and each overlay area print;
(2) after the data of reading overlay area, remove overlay area on image in 2 D code, read image in 2 D code information, by Quick Response Code decoding algorithm, it is decoded;
(3) be that key is decrypted by decipherment algorithm by decoded information with the overlay area data that step (1) reads, obtain the raw information of image in 2 D code.
Preferably, in described step (3), decoded information comprises cleartext information and encryptedly to hide Info, concrete steps are as follows: first decoded information be split as cleartext information and encryptedly hide Info, be that key is decrypted by two-way decipherment algorithm by encrypted hiding Info with the overlay area data obtained in step (1) again, obtain the raw information of image in 2 D code.
Further, in described step (3), cleartext information and encrypted hiding Info adopt separator to split.
A kind of Quick Response Code hybrid coding device, comprise overlay area data generating device and Quick Response Code generating apparatus, Quick Response Code generating apparatus is connected with overlay area data generating device; Described overlay area data generating device is for generating overlay area data; Described Quick Response Code generating apparatus comprises:
Encrypting module, for overlay area data for hiding Info of need encrypting of double secret key is encrypted;
Quick Response Code coding module, for generating image in 2 D code by Quick Response Code information generated;
Described encrypting module is connected with Quick Response Code coding module.
Preferably, described Quick Response Code generating apparatus also comprises die section, and described die section is used for cleartext information and encrypted hiding Info to carry out split; Encrypting module is connected with Quick Response Code coding module by described die section.
A kind of Quick Response Code hybrid decoding device, comprise overlay area data fetch device and Quick Response Code reading device, overlay area data fetch device is connected with Quick Response Code reading device, and described overlay area data fetch device is for reading the overlay area data on image in 2 D code overlay area; Described Quick Response Code reading device comprises:
Read module: for reading image in 2 D code;
Quick Response Code decoder module: the image in 2 D code information for reading read module is decoded;
Deciphering module: be decrypted process for hiding Info for double secret key is encrypted with overlay area data;
Described read module, Quick Response Code decoder module are connected successively with deciphering module.
Preferably, described Quick Response Code reading device also comprises fractionation module, for the information after Quick Response Code decoding module decodes being split into cleartext information and encryptedly hiding Info; Quick Response Code decoder module is connected with deciphering module by described fractionation module.
The present invention has following advantage and effect relative to prior art:
(1) key of the present invention by hiding Info in 2 D code information using the overlay area data in Quick Response Code template, makes overlay area data and Quick Response Code pairing, realizes the monitoring to two-dimensional code data, supervision.The present invention adopts overlay area data to encrypt and decrypt as hiding Info in double secret key Quick Response Code, improves security and the confidentiality of 2 D code information.
(2) overlay area of the present invention data are arranged on the overlay area of image in 2 D code, can ensure that image in 2 D code can only be read once, after image in 2 D code is read and uses, overlay area on image in 2 D code is also removed certainly, therefore the overlay area data on overlay area disappear naturally, namely the decruption key of Quick Response Code cannot be obtained, naturally just cannot obtain the cleartext information in 2 D code information and hide Info, ensure that Quick Response Code is merely able to single use, antifalsification and uniqueness that key strengthens Quick Response Code is have employed in the present invention, be suitable for businessman's prize drawing, the fields such as integration.
Accompanying drawing explanation
Fig. 1 is the structural representation of Quick Response Code hybrid coding device of the present invention.
Fig. 2 is the structural representation of Quick Response Code hybrid decoding device of the present invention.
Fig. 3 is coding method of the present invention and the process flow diagram of coding/decoding method in commodity prize drawing application.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, in this enforcement, Quick Response Code hybrid coding device comprises overlay area data generating device and Quick Response Code generating apparatus, and Quick Response Code generating apparatus is connected with overlay area data generating device; Overlay area data generating device, for generating overlay area data, comprises the data such as the character that overlay area quantity, the shape of each overlay area and each overlay area print;
Quick Response Code generating apparatus comprises:
Encrypting module, for overlay area data for hiding Info of need encrypting of double secret key is encrypted;
Die section, for carrying out split by cleartext information and encrypted hiding Info;
Quick Response Code coding module, for generating image in 2 D code by the encrypted Quick Response Code information generated obtained with cleartext information split that hides Info by Quick Response Code generating algorithm; Wherein Quick Response Code coding module can adopt the Quick Response Code generating algorithms such as PDF417, Datamatrix, Maxicode, QRCode, Code49, Code16K, Vericode, Ultracode.
Encrypting module, die section are connected successively with Quick Response Code coding module.
As shown in Figure 2, in the present embodiment, Quick Response Code hybrid decoding device comprises overlay area data fetch device and Quick Response Code reading device, overlay area data fetch device is connected with Quick Response Code reading device, and overlay area data fetch device is for reading the overlay area data on image in 2 D code overlay area; Quick Response Code reading device comprises:
Read module: for reading image in 2 D code;
Quick Response Code decoder module: the image in 2 D code information for reading read module is decoded;
Split module: for the information after Quick Response Code decoding module decodes being split into cleartext information and encryptedly hiding Info;
Deciphering module: for overlay area data for double secret key decoding after encrypted hiding Info be decrypted process;
Read module in above-mentioned Quick Response Code reading device, Quick Response Code decoder module, fractionation module are connected successively with deciphering module.
The schematic diagram of the present embodiment in commodity prize drawing application as shown in Figure 3.As shown in the figure, after the present embodiment completes cataloged procedure according to the coding method shown in Fig. 3, production firm is sticky note or the image in 2 D code that prints through encryption, coding and Mulching treatment on product and packaging thereof.After consumer buys product, first the overlay area data on Quick Response Code overlay area are read, then scrape overlay area coat off, read image in 2 D code, and use overlay area data to be decrypted process to encrypted hiding Info in Quick Response Code information generated.Concrete, the coding method adopted in the present embodiment and coding/decoding method as follows:
Quick Response Code hybrid coding method in the present embodiment, comprises the following steps:
(1) in Quick Response Code template (rectangle or square), cover templates encode decoding table according to the Quick Response Code of predefined and generate overlay area data, overlay area data comprise the character C that overlay area quantity i, the shape S of each overlay area and each overlay area print.Wherein the shape of each overlay area is designated as Si, and the character that each overlay area prints is designated as Ci.The Quick Response Code of predefined covers templates encode decoding table and refers to the coding and decoding table that the character that the shape that may occur according to overlay area in advance and overlay area print is set up respectively, in shape coding decoding table, define the corresponding numerical value of each shape, then the character printed together with overlay area and overlay area quantity, set up < overlay area quantity i, each overlay area shape S, the key vector of institute's lettering symbol C> on each overlay area.
(2) Quick Response Code raw information comprises the M that hides Info that need encrypt
1do not need the cleartext information M encrypted
2; Use bidirectional encipher algorithm will to hide Info M
1with overlay area data vector <i, S, C> are encrypted as key, obtain the encrypted M ' that hides Info
1=F (M
1, <i, S, C>); By M '
1and M
2by the split of split algorithm, obtain Quick Response Code information generated M=P (M '
1, M
2).Wherein a kind of simple splitting mode uses separator w to splice, Quick Response Code information generated M=M '
1+ w+M
2, the encrypted M ' that hides Info
1immediately following cleartext information M
2after, cleartext information M can be carried out by Quick Response Code generation side with this thinking
2with the encrypted M ' that hides Info
1simple characters string splicing work.
(3) Quick Response Code information generated M step (2) obtained generates image in 2 D code by Quick Response Code generating algorithm (the Quick Response Code generating algorithm such as such as PDF417, Datamatrix, Maxicode, QRCode, Code49, Code16K, Vericode, Ultracode).
(4) cover the image in 2 D code that step (3) generates, adopt the mode of coating to cover on image in 2 D code the Quick Response Code template with overlay area data obtained in step (1).
Quick Response Code hybrid decoding method in the present embodiment, comprises the following steps:
(1) read the overlay area data on image in 2 D code overlay area, overlay area data comprise the character that overlay area quantity, the shape of each overlay area and each overlay area print;
(2) after reading overlay area data, remove the overlay area on image in 2 D code, read the image in 2 D code information under overlay area, by Quick Response Code decoding algorithm, decoding is carried out to it and obtain Quick Response Code production information M;
(3) by splitting algorithm <M '
1, M
2>=P
-1(M) Quick Response Code information generated M is split to the M ' that hides Info through encryption obtained
1with the cleartext information M of not encrypted
2, then by two-way decipherment algorithm to M '
1with overlay area data vector <i, S, C> are decrypted as key, obtain the M that hides Info before encrypting
1, by Quick Response Code raw information M
1and M
2export.Wherein Quick Response Code information generated M fractionation algorithm is: find in Quick Response Code information generated M and carry out cleartext information and the fractionation foundation hidden Info through encryption: separator w, according to Quick Response Code information generated M=M '
1+ w+M
2, before and after separator w, be respectively cleartext information M
2with the M ' that hides Info through encryption
1.
Above-mentioned hiding Info comprises anti-counterfeiting information, encrypted message and identifying information; Can be product vendor's information, product distribution business information, product original producton location information, product weight, time of making the product information, keeping life, batch number and product total quantity information; The sales outlet information of certificate, bill, the term of validity, applying unit or personal information, the amount of money, send unit, recruiting unit, send the time, specification and the information toward ground return; People and unit information belonging to the certificate term of validity, reviewing authority's information, certificate.
Above-mentioned cleartext information can be product ID, product essential information, product are introduced substantially, product vendor's information, product distribution business information, product original producton location information, product weight, time of making the product information, keeping life, batch number and product total quantity information; Sales outlet information, the term of validity, applying unit or personal information, the amount of money of certificate, bill, send unit, recruiting unit, send the time, specification and toward ground return information; People and unit information belonging to the certificate term of validity, reviewing authority's information, certificate; Or the key information etc. that specific password encryption/decoding adopts.
The overlay area of the image in 2 D code information of this enforcement is provided with overlay area data, if image in 2 D code information was read, the overlay area data of the coating above it are inevitable to be scraped off, therefore can not read and obtain overlay area data, thus also just obtain less than the key be decrypted hiding Info in 2 D code information, the inevitable raw information that also just can not get Quick Response Code.Adopt the overlay area data of overlay area on image in 2 D code to encrypt and decrypt as double secret key Quick Response Code raw information, ensure that the image in 2 D code information under the covering of overlay area can only be read once.Because the image in 2 D code information of the present embodiment just can be read when there being key, be suitable for the fields such as prize drawing, integration.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. a Quick Response Code hybrid coding method, is characterized in that, comprises the following steps:
(1) in Quick Response Code template, cover templates encode decoding table generate overlay area data according to the Quick Response Code of predefined, overlay area data comprise the character that overlay area quantity, the shape of each overlay area and each overlay area print; The Quick Response Code of predefined covers templates encode decoding table and refers to the coding and decoding table that the character that the shape that may occur according to overlay area in advance and overlay area print is set up respectively, in shape coding decoding table, define the corresponding numerical value of each shape, then the character printed together with overlay area and overlay area quantity, set up < overlay area quantity i, each overlay area shape S, the key vector of institute's lettering symbol C> on each overlay area;
(2) hide Info what need in Quick Response Code raw information to encrypt by cryptographic algorithm and be that key is encrypted with the overlay area data that step (1) generates, obtain Quick Response Code information generated;
(3) Quick Response Code information generated step (2) obtained generates image in 2 D code by Quick Response Code generating algorithm;
(4) cover the image in 2 D code that step (3) generates, the Quick Response Code template with overlay area data obtained in step (1) is covered on image in 2 D code.
2. Quick Response Code hybrid coding method according to claim 1, it is characterized in that, what Quick Response Code raw information described in step (2) comprised that cleartext information and needs encrypt hides Info, and encrypted hiding Info in cleartext information and step (2) is carried out split and obtained Quick Response Code information generated.
3. Quick Response Code hybrid coding method according to claim 2, is characterized in that, in described cleartext information and step (2), encrypted hiding Info carries out split by separator;
The character adopting bidirectional encipher algorithm in step (1), the overlay area quantity of generation, the shape of each overlay area and each overlay area to print that hides Info in described step (2) is encrypted as key;
Quick Response Code generating algorithm in described step (3) is Quick Response Code PDF417, Datamatrix, Maxicode, QRCode, Code49, Code16K, Vericode or Ultracode generating algorithm.
4. a Quick Response Code hybrid decoding method, is characterized in that, comprises the following steps:
(1) read the overlay area data on image in 2 D code overlay area, overlay area data comprise the character that overlay area quantity, the shape of each overlay area and each overlay area print;
(2) after the data of reading overlay area, remove overlay area on image in 2 D code, read image in 2 D code information, by Quick Response Code decoding algorithm, it is decoded;
(3) be that key is decrypted by decipherment algorithm by decoded information with the overlay area data that step (1) reads, obtain the raw information of image in 2 D code.
5. Quick Response Code hybrid decoding method according to claim 4, it is characterized in that, in described step (3), decoded information comprises cleartext information and encryptedly to hide Info, concrete steps are as follows: first decoded information be split as cleartext information and encryptedly hide Info, be that key is decrypted by two-way decipherment algorithm by encrypted hiding Info with the overlay area data obtained in step (1) again, obtain the raw information of image in 2 D code.
6. Quick Response Code hybrid decoding method according to claim 5, is characterized in that, in described step (3), cleartext information and encrypted hiding Info adopt separator to split.
7. a Quick Response Code hybrid coding device, is characterized in that, comprise overlay area data generating device and Quick Response Code generating apparatus, Quick Response Code generating apparatus is connected with overlay area data generating device; Described overlay area data generating device is for generating overlay area data; Described Quick Response Code generating apparatus comprises:
Encrypting module, for overlay area data for hiding Info of need encrypting of double secret key is encrypted;
Quick Response Code coding module, for generating image in 2 D code by Quick Response Code information generated;
Described encrypting module is connected with Quick Response Code coding module.
8. Quick Response Code hybrid coding device according to claim 7, is characterized in that, described Quick Response Code generating apparatus also comprises die section, and described die section is used for cleartext information and encrypted hiding Info to carry out split; Encrypting module is connected with Quick Response Code coding module by described die section.
9. a Quick Response Code hybrid decoding device, it is characterized in that, comprise overlay area data fetch device and Quick Response Code reading device, overlay area data fetch device is connected with Quick Response Code reading device, and described overlay area data fetch device is for reading the overlay area data on image in 2 D code overlay area; Described Quick Response Code reading device comprises:
Read module: for reading image in 2 D code;
Quick Response Code decoder module: the image in 2 D code information for reading read module is decoded;
Deciphering module: be decrypted process for hiding Info for double secret key is encrypted with overlay area data;
Described read module, Quick Response Code decoder module are connected successively with deciphering module.
10. Quick Response Code hybrid decoding device according to claim 9, is characterized in that, described Quick Response Code reading device also comprises fractionation module, for the information after Quick Response Code decoding module decodes being split into cleartext information and encryptedly hiding Info; Quick Response Code decoder module is connected with deciphering module by described fractionation module.
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| CN102270294A (en) * | 2011-08-12 | 2011-12-07 | 华南农业大学 | Bar code and two-dimension code hybrid coding and decoding methods and devices |
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