CN102902997A - Two-dimensional code hybrid coding and decoding device and method - Google Patents
Two-dimensional code hybrid coding and decoding device and method Download PDFInfo
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- CN102902997A CN102902997A CN2012103563663A CN201210356366A CN102902997A CN 102902997 A CN102902997 A CN 102902997A CN 2012103563663 A CN2012103563663 A CN 2012103563663A CN 201210356366 A CN201210356366 A CN 201210356366A CN 102902997 A CN102902997 A CN 102902997A
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Abstract
The invention discloses a two-dimensional code hybrid coding method which comprises the following steps of: (1) generating coverage area data on a two-dimensional code template; (2) encrypting hidden information to be encrypted in the two-dimensional code original information by taking the coverage area data as a key, thus obtaining two-dimensional code generation information; (3) generating a two-dimensional code image from the two-dimensional code generation information through a two-dimensional code generation algorithm; and (4) covering the two-dimensional code template with the coverage area data on the two-dimensional code image. The invention also discloses a decoding method of the coding method and a coding and decoding device. According to the invention, the hidden information in the two-dimensional code can be encrypted and decrypted by taking the coverage area data as the key, so that the safety and confidentiality of the two-dimensional code are effectively enhanced, and the decryption of the two-dimensional code image can be realized only on the basis of acquiring the key on the coverage area, thereby ensuring that the two-dimensional code image can be properly decoded only on the premise that the coverage area is damaged, and enhancing the use safety of the two-dimensional code.
Description
Technical field
The present invention relates to a kind of coding, coding/decoding method and coding, decoding device, particularly a kind of two-dimension code hybrid coding, decoding device and method.
Background technology
Two-dimension code is the chequered with black and white graphic recording data symbol information that distributes at two-dimensional directional according to certain rules with certain specific geometric figure, on coding, utilize dexterously " 0 ", the concept of " 1 " bit stream that consists of the computer-internal logical foundations, represent the literal numerical information with several geometrical bodies corresponding with scale-of-two, automatically process with realization information by image input device or photoelectric scanning device automatically identifying and reading.
Because two-dimension code has the distinguishing feature such as contain much information, coding range is wide, reliability of decode is high and use cost is low, now has been widely used in every field.Because the two-dimension code cost is low, the technology of Code And Decode is open, the threshold of making the two-dimension code of palming off is also very low.Two-dimension code usually exposes and is printed on the label, therefore uses the two-dimension code reading terminals can read very easily the information of two-dimension code, for activities such as the prize drawing of businessman, integrations, is difficult to judge whether this two-dimension code is read and used.
Therefore whether, need a kind of effective solution, can guarantee on the one hand the security of two-dimension code, can identify on the other hand two-dimension code is to be read and to use for the first time.
Summary of the invention
The shortcoming that fundamental purpose of the present invention is to overcome prior art provides a kind of two-dimension code hybrid coding, decoding device and method with not enough.Above-mentioned coding and decoding device and method are to mix key on the basis of original two-dimension code to carry out Code And Decode, and the 2 D code information by this hybrid coding device code is only in that read could be decoded on the basis of key, the security that has improved two-dimension code.
Purpose of the present invention realizes by following technical scheme:
A kind of two-dimension code hybrid coding method may further comprise the steps:
(1) on the two-dimension code template, cover template coding and decoding table according to the two-dimension code of predefined and generate the overlay area data, the overlay area data comprise the character that prints on the shape of overlay area quantity, each overlay area and each overlay area; The two-dimension code of predefined covers the coding and decoding table that character that template coding and decoding table refers to that in advance the shape that may occur according to the overlay area and overlay area are printed is set up respectively, in the shape coding decoding table, define the corresponding numerical value of each shape, character and the overlay area quantity of then printing together with the overlay area, foundation＜overlay area quantity i, each overlay area shape S, institute's lettering symbol C on each overlay area〉the key vector;
(2) the overlay area data that hiding Info of needing in the two-dimension code raw information to encrypt generated by cryptographic algorithm and take step (1) obtain the two-dimension code information generated as key is encrypted;
(3) the two-dimension code information generated that step (2) is obtained generates image in 2 D code by the two-dimension code generating algorithm;
(4) cover the image in 2 D code that step (3) generates, the two-dimension code template with the overlay area data that obtains in the step (1) is covered on the image in 2 D code.
Preferably, two-dimension code raw information described in the step (2) comprises hiding Info of cleartext information and needs encryption, and encrypted hiding Info in cleartext information and the step (2) carried out amalgamation and obtained the two-dimension code information generated.
Further, encrypted hiding Info carried out amalgamation by separator in described cleartext information and the step (2);
Hide Info in the described step (2) and adopt the bidirectional encipher algorithm to be encrypted as key with the character that is printed on the shape of the overlay area quantity that generates in the step (1), each overlay area and each overlay area;
Two-dimension code generating algorithm in the described step (3) is two-dimension code PDF417(Portable Data File417), Datamatrix, Maxicode, QR Code(Quick Response Code), Code 49, Code 16K, Vericode or Ultracode produce algorithm.
A kind of two-dimension code hybrid decoding method may further comprise the steps:
(1) read overlay area data on the image in 2 D code overlay area, the overlay area data comprise the character that prints on the shape of overlay area quantity, each overlay area and each overlay area;
(2) after reading the overlay area data, remove overlay area on the image in 2 D code, read image in 2 D code information, by the two-dimension code decoding algorithm it is decoded;
(3) the overlay area data that decoded information read take step (1) obtain the raw information of image in 2 D code as key is decrypted by decipherment algorithm.
Preferably, decoded information comprises cleartext information and encrypted hiding Info in the described step (3), concrete steps are as follows: at first decoded information is split as cleartext information and encrypted hiding Info, again with the encrypted overlay area data that obtain in the step (1) of hiding Info as key is decrypted by two-way decipherment algorithm, obtain the raw information of image in 2 D code.
Further, cleartext information and encrypted hiding Info adopt separator to split in the described step (3).
A kind of two-dimension code hybrid coding device comprises overlay area data generating device and two-dimension code generating apparatus, and the two-dimension code generating apparatus is connected with the overlay area data generating device; Described overlay area data generating device is used for generating the overlay area data; Described two-dimension code generating apparatus comprises:
Encrypting module is used for take the overlay area data as key hiding Info of need encryption being encrypted;
The two-dimension code coding module is used for the two-dimension code information generated is generated image in 2 D code;
Described encrypting module is connected with the two-dimension code coding module.
Preferably, described two-dimension code generating apparatus also comprises die section, and described die section is used for cleartext information and encrypted hiding Info are carried out amalgamation; Encrypting module is connected with the two-dimension code coding module by described die section.
A kind of two-dimension code hybrid decoding device, comprise overlay area data fetch device and two-dimension code reading device, the overlay area data fetch device is connected with the two-dimension code reading device, and described overlay area data fetch device is used for reading the overlay area data on the image in 2 D code overlay area; Described two-dimension code reading device comprises:
Read module: be used for reading image in 2 D code;
Two-dimension code decoder module: be used for the image in 2 D code information that read module reads is decoded;
Deciphering module: be used for take the overlay area data as key encrypted hiding Info being decrypted processing;
Described read module, two-dimension code decoder module are connected with deciphering module and are connected.
Preferably, described two-dimension code reading device also comprises the fractionation module, is used for the decoded information of two-dimension code decoder module is split into cleartext information and encrypted hiding Info; The two-dimension code decoder module is connected with deciphering module by described fractionation module.
The present invention has following advantage and effect with respect to prior art:
(1) the present invention by with the overlay area data on the two-dimension code template as the key that hides Info in the 2 D code information, make the pairing of overlay area data and two-dimension code, realize monitoring, supervision to the two-dimension code data.The present invention adopts the overlay area data to be encrypted and to decipher hiding Info in the two-dimension code as key, has improved 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 guarantee that image in 2 D code can only be read once, after image in 2 D code is read and uses, overlay area on the image in 2 D code also is removed certainly, so the overlay area data on the overlay area disappear naturally, namely can't obtain the decruption key of two-dimension code, naturally just can't obtain in the 2 D code information cleartext information and hide Info, guaranteed that two-dimension code is merely able to disposable use, adopt key to strengthen antifalsification and the uniqueness of two-dimension code among the present invention, be suitable for businessman's prize drawing, the fields such as integration.
Description of drawings
Fig. 1 is the structural representation of two-dimension code hybrid coding device of the present invention.
Fig. 2 is the structural representation of two-dimension 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 the commodity prize drawing is used.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, two-dimension code hybrid coding device comprises overlay area data generating device and two-dimension code generating apparatus in this enforcement, and the two-dimension code generating apparatus is connected with the overlay area data generating device; The overlay area data generating device be used for to generate the overlay area data, comprises the data such as character of printing on the shape of overlay area quantity, each overlay area and each overlay area;
The two-dimension code generating apparatus comprises:
Encrypting module is used for take the overlay area data as key hiding Info of need encryption being encrypted;
Die section is used for cleartext information and encrypted hiding Info are carried out amalgamation;
The two-dimension code coding module, be used for encryptedly hiding Info and two-dimension code information generated that the cleartext information amalgamation obtains by two-dimension code generating algorithm generation image in 2 D code; Wherein the two-dimension code coding module can adopt the two-dimension code generating algorithms such as PDF417, Datamatrix, Maxicode, QR Code, Code 49, Code 16K, Vericode, Ultracode.
Encrypting module, die section are connected with the two-dimension code coding module and are connected.
As shown in Figure 2, two-dimension code hybrid decoding device comprises overlay area data fetch device and two-dimension code reading device in the present embodiment, the overlay area data fetch device is connected with the two-dimension code reading device, and the overlay area data fetch device is used for reading the overlay area data on the image in 2 D code overlay area; The two-dimension code reading device comprises:
Read module: be used for reading image in 2 D code;
Two-dimension code decoder module: be used for the image in 2 D code information that read module reads is decoded;
Split module: be used for the decoded information of two-dimension code decoder module is split into cleartext information and encrypted hiding Info;
Deciphering module: be used for take the overlay area data as key rear encrypted the hiding Info of decoding being decrypted processing;
Read module in the above-mentioned two-dimension code reading device, two-dimension code decoder module, fractionation module are connected with deciphering module and are connected.
The synoptic diagram of present embodiment in commodity prize drawings is used as shown in Figure 3.As shown in the figure, after present embodiment was finished cataloged procedure according to coding method shown in Figure 3, production firm glued note or prints the image in 2 D code of processing through encryption, coding and covering at product and packing thereof.After the consumer buys product, at first read the overlay area data on the two-dimension code overlay area, then scrape the overlay area coat off, read image in 2 D code, and use the overlay area data that encrypted hiding Info in the two-dimension code information generated is decrypted processing.Concrete, the coding method and the coding/decoding method that adopt in the present embodiment are as follows:
Two-dimension code hybrid coding method in the present embodiment may further comprise the steps:
(1) cover template coding and decoding table at the upper two-dimension code according to predefined of two-dimension code template (rectangle or square) and generate the overlay area data, the overlay area data comprise the character C that prints on the shape S of overlay area quantity i, each overlay area and each overlay area.Wherein the shape of each overlay area is designated as Si, and the character that prints on each overlay area is designated as Ci.The two-dimension code of predefined covers the coding and decoding table that character that template coding and decoding table refers to that in advance the shape that may occur according to the overlay area and overlay area are printed is set up respectively, in the shape coding decoding table, define the corresponding numerical value of each shape, character and the overlay area quantity of then printing together with the overlay area, foundation＜overlay area quantity i, each overlay area shape S, institute's lettering symbol C on each overlay area〉the key vector.
(2) two-dimension code raw information comprises the M that hides Info that needs encryption
1The cleartext information M that need not encrypt
2Use the bidirectional encipher algorithm M that will hide Info
1With overlay area data vector＜i, S, C〉be encrypted as key, obtain the encrypted M of hiding Info '
1=F (M
1,＜i, S, C 〉); With M '
1And M
2By the amalgamation of amalgamation algorithm, obtain two-dimension code information generated M=P (M '
1, M
2).Wherein a kind of simple splitting mode is to use separator w to splice two-dimension code information generated M=M '
1+ w+M
2, the encrypted M ' that hides Info
1Immediately following cleartext information M
2After, can carry out cleartext information M by two-dimension code generation side with this thinking
2With the encrypted M ' that hides Info
1Simple characters string splicing work.
(3) the two-dimension code information generated M that step (2) is obtained generates image in 2 D code by two-dimension code generating algorithm (two-dimension code generating algorithms such as PDF417, Datamatrix, Maxicode, QR Code, Code 49, Code 16K, Vericode, Ultracode).
(4) cover the image in 2 D code that step (3) generates, adopt the mode of coating to cover on the image in 2 D code two-dimension code template with the overlay area data that obtains in the step (1).
Two-dimension code hybrid decoding method in the present embodiment may further comprise the steps:
(1) read overlay area data on the image in 2 D code overlay area, the overlay area data comprise the character that prints on the shape of overlay area quantity, each overlay area and each overlay area;
(2) the image in 2 D code information under the overlay area is read in the overlay area on the removal image in 2 D code after reading the overlay area data, and by the two-dimension code decoding algorithm it being decoded obtains two-dimension code production information M;
(3) by splitting algorithm＜M '
1, M
2〉=P
-1(M) two-dimension code information generated M is split the M ' that hides Info through encryption that obtains
1Cleartext information M with not encrypted
2, pass through again two-way decipherment algorithm to M '
1With overlay area data vector＜i, S, C〉be decrypted the M that hides Info before obtaining encrypting as key
1, with two-dimension code raw information M
1And M
2Output.Wherein two-dimension code information generated M splits algorithm and is: seek in two-dimension code information generated M and carry out cleartext information and through the fractionation foundation that hides Info of encryption: separator w, and according to two-dimension code information generated M=M '
1+ w+M
2, be respectively cleartext information M before and after the separator w
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 merchant 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 the personal information of certificate, bill, the amount of money, the unit of sending, recruiting unit, send time, specification and toward the information of ground return; People and unit information under the certificate term of validity, reviewing authority's information, the certificate.
Above-mentioned cleartext information can be for product ID, product essential information, product are introduced substantially, product vendor's information, product distribution merchant 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 the personal information of certificate, bill, the amount of money, the unit of sending, recruiting unit, send time, specification and toward ground return information; People and unit information under the certificate term of validity, reviewing authority's information, the certificate; Or the specific key information that password encryption/decoding is adopted etc.
Be provided with the overlay area data on the overlay area of the image in 2 D code information of this enforcement, 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 the overlay area data, thereby also just obtain the key that is decrypted less than to hiding Info in the 2 D code information, the inevitable raw information that also just can not get two-dimension code.Adopt the overlay area data of overlay area on the image in 2 D code as key two-dimension code raw information to be encrypted and to decipher, guaranteed 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 present embodiment just can be read having in the situation of key, is suitable for the fields such as prize drawing, integration.
Above-described embodiment is the better embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. a two-dimension code hybrid coding method is characterized in that, may further comprise the steps:
(1) on the two-dimension code template, cover template coding and decoding table according to the two-dimension code of predefined and generate the overlay area data, the overlay area data comprise the character that prints on the shape of overlay area quantity, each overlay area and each overlay area; The two-dimension code of predefined covers the coding and decoding table that character that template coding and decoding table refers to that in advance the shape that may occur according to the overlay area and overlay area are printed is set up respectively, in the shape coding decoding table, define the corresponding numerical value of each shape, character and the overlay area quantity of then printing together with the overlay area, foundation＜overlay area quantity i, each overlay area shape S, institute's lettering symbol C on each overlay area〉the key vector;
(2) the overlay area data that hiding Info of needing in the two-dimension code raw information to encrypt generated by cryptographic algorithm and take step (1) obtain the two-dimension code information generated as key is encrypted;
(3) the two-dimension code information generated that step (2) is obtained generates image in 2 D code by the two-dimension code generating algorithm;
(4) cover the image in 2 D code that step (3) generates, the two-dimension code template with the overlay area data that obtains in the step (1) is covered on the image in 2 D code.
2. two-dimension code hybrid coding method according to claim 1, it is characterized in that, two-dimension code raw information described in the step (2) comprises hiding Info of cleartext information and needs encryption, and encrypted hiding Info in cleartext information and the step (2) carried out amalgamation and obtained the two-dimension code information generated.
3. two-dimension code hybrid coding method according to claim 2 is characterized in that, encrypted hiding Info carried out amalgamation by separator in described cleartext information and the step (2);
Hide Info in the described step (2) and adopt the bidirectional encipher algorithm to be encrypted as key with the character that is printed on the shape of the overlay area quantity that generates in the step (1), each overlay area and each overlay area;
Two-dimension code generating algorithm in the described step (3) is that two-dimension code PDF417, Datamatrix, Maxicode, QR Code, Code 49, Code 16K, Vericode or Ultracode produce algorithm.
4. a two-dimension code hybrid decoding method is characterized in that, may further comprise the steps:
(1) read overlay area data on the image in 2 D code overlay area, the overlay area data comprise the character that prints on the shape of overlay area quantity, each overlay area and each overlay area;
(2) after reading the overlay area data, remove overlay area on the image in 2 D code, read image in 2 D code information, by the two-dimension code decoding algorithm it is decoded;
(3) the overlay area data that decoded information read take step (1) obtain the raw information of image in 2 D code as key is decrypted by decipherment algorithm.
5. two-dimension code hybrid decoding method according to claim 4, it is characterized in that, decoded information comprises cleartext information and encrypted hiding Info in the described step (3), concrete steps are as follows: at first decoded information is split as cleartext information and encrypted hiding Info, again with the encrypted overlay area data that obtain in the step (1) of hiding Info as key is decrypted by two-way decipherment algorithm, obtain the raw information of image in 2 D code.
6. two-dimension code hybrid decoding method according to claim 5 is characterized in that, cleartext information and encrypted hiding Info adopt separator to split in the described step (3).
7. a two-dimension code hybrid coding device is characterized in that, comprises overlay area data generating device and two-dimension code generating apparatus, and the two-dimension code generating apparatus is connected with the overlay area data generating device; Described overlay area data generating device is used for generating the overlay area data; Described two-dimension code generating apparatus comprises:
Encrypting module is used for take the overlay area data as key hiding Info of need encryption being encrypted;
The two-dimension code coding module is used for the two-dimension code information generated is generated image in 2 D code;
Described encrypting module is connected with the two-dimension code coding module.
8. two-dimension code hybrid coding device according to claim 7 is characterized in that, described two-dimension code generating apparatus also comprises die section, and described die section is used for cleartext information and encrypted hiding Info are carried out amalgamation; Encrypting module is connected with the two-dimension code coding module by described die section.
9. two-dimension code hybrid decoding device, it is characterized in that, comprise overlay area data fetch device and two-dimension code reading device, the overlay area data fetch device is connected with the two-dimension code reading device, and described overlay area data fetch device is used for reading the overlay area data on the image in 2 D code overlay area; Described two-dimension code reading device comprises:
Read module: be used for reading image in 2 D code;
Two-dimension code decoder module: be used for the image in 2 D code information that read module reads is decoded;
Deciphering module: be used for take the overlay area data as key encrypted hiding Info being decrypted processing;
Described read module, two-dimension code decoder module are connected with deciphering module and are connected.
10. two-dimension code hybrid decoding device according to claim 9 is characterized in that, described two-dimension code reading device also comprises the fractionation module, is used for the decoded information of two-dimension code decoder module is split into cleartext information and encrypted hiding Info; The two-dimension code decoder module is connected with deciphering module by described fractionation module.
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