CN102945424A - Anti-fake printing method by two-dimensional encryption - Google Patents
Anti-fake printing method by two-dimensional encryption Download PDFInfo
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- CN102945424A CN102945424A CN2012104023770A CN201210402377A CN102945424A CN 102945424 A CN102945424 A CN 102945424A CN 2012104023770 A CN2012104023770 A CN 2012104023770A CN 201210402377 A CN201210402377 A CN 201210402377A CN 102945424 A CN102945424 A CN 102945424A
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Abstract
The invention relates to an anti-fake printing method by two-dimensional encryption. According to the method, anti-fake information can be converted into a binary modulation signal by Ni&C encryption operation and channel encoding, and the anti-fake information is embedded in the full page in a circulating look-up table modulation manner in orderly change of shapes of amplitude modulation websites, so that the anti-fake information can be identified from any one fragment when a printed matter is identified. The method can be widely applied to the field of forgery prevention of printed matters.
Description
Affiliated technical field:
The present invention relates to a kind of anti-counterfeiting printing technology, a kind of two dimensional encryption anti-counterfeiting printing technology particularly, this anti-counterfeiting printing technology can be used for the false proof of various printed matters.
Background technology:
Existing comparatively common method for anti-counterfeit has following several: the first is laser anti-false sign, the anti-fake label that symbol or the special identification icon of product is printed to product with the recessive printing ink daylight fluorescence ink of laser printing technology, and the same class product uses the same labeling, because anti-fake label is easier to forge, and the anti-fake label of forging is used on the fake products, cause the true and false of product to obscure, therefore be difficult to effectively false proof.The second is the cipher counterfeit-proof labeling, its method that adopts is that every product is compiled one group of number, the coding of every product is not identical, be printed on the labeling this number and covering, simultaneously this number is deposited in and can supply in the Computer Database of consumer's inquiry, when the consumer buys product, the digital entering computer database that will identify by phone or networking computing machine compares identification, identical being very, difference is vacation, and method is simple, identification easily, be difficult for forging, but in actual the use, because coded data is to print labeling after the computing machine unification generates.The true and false coded data of representative products may be faked by illegal copies, and simultaneously, the coding on the product of the also recyclable not inquiry of encoding is made mark and is attached on the false pain product, and antifalse effect is difficult to guarantee.The third is texture anti-fake, false proof with the textural characteristics on its labeling, although difficult forgery, but because the serial number that a bidding pastes, and be plain code, every piece of labeling can be inquired about repeatedly, in the necessary textural characteristics grid that the fake producer can be by warehouseman or shop-assistant be reflected during with the sequence number on the labeling and inquiry have or not phenomenon to plagiarize after forge in batches by this feature.In sum, all there is certain shortcoming in existing method for anti-counterfeit, thereby can not be from prevent fake products at all.
Summary of the invention:
The shortcoming that exists in order to overcome existing various printed matter anti-counterfeiting printing technology, the deficiency that the present invention is directed to existing printed matter anti-counterfeiting printing technology existence is improved prior art, a kind of encryption counterfeit printing technology of shape of scale-of-two coded signal modulation printed matter amplitude has been proposed, this anti-counterfeiting printing technology is embedded in anti-counterfeiting information in the full page by the change of the shape of amplitude, can when identifying, printed matter in any one fragment, identify anti-counterfeiting information, therefore have very strong crush resistance, can fundamentally stop to adopt and take a picture, scanning waits the bootlegging behavior.
The technical solution adopted for the present invention to solve the technical problems is: the amplitude in the flexographic printing hybrid screening and frequency-modulation halftone dot are separately processed, anti-counterfeiting information is carried out digitizing, generate eight one group binary message table, anti-counterfeiting information is image information, Word message or trademark information, i group octet binary message in the binary message table is denoted as Ni, and i is the positive integer more than or equal to 0, and the eight-digit binary number enciphered message is denoted as C, C is the positive integer of 0≤C≤256, Suan Fu ﹠amp; Adopt+,-, *, four kinds of computings of ÷, two scale-of-two control variable are denoted as k, control variable k is the positive integer of 0≤k≤3, Ni﹠amp during k=0; C is defined as Ni+C, Ni﹠amp during k=1; C is defined as Ni-C, Ni﹠amp during k=2; C is defined as Ni * C, Ni﹠amp during k=3; C is defined as Ni ÷ C, sets the initial value of encryption parameter C, and the initial value of setup control variable k is k=0, sets 8 binary message N in the scale-of-two anti-counterfeiting information table
iPosition control variable i=1, first 8 binary message N from scale-of-two anti-counterfeiting information table
1Beginning is carried out Ni﹠amp to each 8 binary message in the scale-of-two anti-counterfeiting information table; The C cryptographic calculation, and each 8 binary message is being carried out Ni﹠amp; Carry out the k+1 computing in the time of the C cryptographic calculation, make next computing point to Ni﹠amp; C wherein k has increased by 1, by each 8 binary message in the scale-of-two anti-counterfeiting information table are carried out Ni﹠amp; The C cryptographic calculation, generate binary add tight defense fake information table, the shape of amplitude is set to two kinds: and ◇, wherein is defined as numeral 0, ◇ is defined as numeral 1, utilize the binary add confidential information that generates by circulation look-up table modulation amplitude, make its regular shape according to amplitude in the alteration of form hybrid screening of above-mentioned two kinds of amplitudes, make that the shape of amplitude is well-regulated in the hybrid screening changes, adjacent eight amplitudes consist of a group octet binary message after the modulation, make it carry anti-counterfeiting information, and this anti-counterfeiting information is embedded in the full page site, can more effectively resist based on camera, scanner, the bootlegging behaviors such as electronic document.Embed extractible anti-counterfeiting information by non-in printed matter obviously, can provide valid certificates for genuine piece, have simultaneously stronger anti-forgery ability, and do not increase extra false proof cost.
For solving above-mentioned technical matters, at first anti-counterfeiting information is carried out digitizing, generate eight one group binary message table, anti-counterfeiting information can be image information, Word message, trademark information etc., generate eight one group binary message table, each the eight-digit binary number information in the binary message table is carried out Ni﹠amp; The C computing generates binary add confidential information table, utilizes the binary add confidential information that generates through chnnel coding, generates eight one group binary modulated signal with error detecting and error correcting function.Chnnel coding can adopt loop coding, the various ways such as convolutional encoding or Turbo coding, original continuous is changed the line map image signal through rasterizing processing (RIP) and hybrid screening output shadow tone hybrid screening picture signal, comprising amplitude and FM screened image signal, utilize the binary modulated signal that generates to adopt the shape of amplitude in the circulation look-up table modulation system modulation hybrid screening picture signal, the shape that makes amplitude is according to and ◇ is regular changes, make that adjacent eight amplitudes carry the eight-digit binary number anti-counterfeiting information by the change of shape in the hybrid screening picture signal, thereby be created on the hybrid screening picture signal that embeds anti-counterfeiting information in the full page site, realize anti-counterfeit printing.
When extracting anti-counterfeiting information, at first gather the halftone dot image signal, process is extracted the edge signal of site to the fuzzy diagnosis of the shape of amplitude, differentiates the shape of amplitude.The shape information of demodulation amplitude, output binary modulated signal.Binary modulated signal to demodulation output carries out respectively channel-decoding and deciphering, recovers anti-counterfeiting signal and exports anti-counterfeiting information.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Fig. 1 loads the anti-counterfeiting information process flow diagram.
Fig. 2 extracts the anti-counterfeiting information process flow diagram.
Embodiment
In loading anti-counterfeiting information process flow diagram 1, anti-counterfeiting information is carried out digitizing, generate eight one group binary message table, anti-counterfeiting information is image information, Word message or trademark information, i group octet binary message in the binary message table is denoted as Ni, and i is the positive integer more than or equal to 0, and the eight-digit binary number enciphered message is denoted as C, C is the positive integer of 0≤C≤256, Suan Fu ﹠amp; Adopt+,-, *, four kinds of computings of ÷, two scale-of-two control variable are denoted as k, control variable k is the positive integer of 0≤k≤3, Ni﹠amp during k=0; C is defined as Ni+C, Ni﹠amp during k=1; C is defined as Ni-C, Ni﹠amp during k=2; C is defined as Ni * C, Ni﹠amp during k=3; C is defined as Ni ÷ C, sets the initial value of encryption parameter C, and the initial value of setup control variable k is k=0, sets 8 binary message N in the scale-of-two anti-counterfeiting information table
iPosition control variable i=1, first 8 binary message N from scale-of-two anti-counterfeiting information table
1Beginning is carried out Ni﹠amp to each 8 binary message in the scale-of-two anti-counterfeiting information table; The C cryptographic calculation, and each 8 binary message is being carried out Ni﹠amp; Carry out the k+1 computing in the time of the C cryptographic calculation, make next computing point to Ni﹠amp; C wherein k has increased by 1, by each 8 binary message in the scale-of-two anti-counterfeiting information table are carried out Ni﹠amp; The C cryptographic calculation, generate binary add tight defense fake information table, the shape of amplitude is set to two kinds: and ◇, and wherein is defined as numeral 0, ◇ is defined as numeral 1, the binary add confidential information that generates generates the binary modulated signal with error detecting and error correcting function through chnnel coding.Chnnel coding can adopt the various ways such as loop coding, convolutional encoding or Turbo coding.Original continuous is changed the line map image signal through rasterizing processing (RIP) and hybrid screening output shadow tone hybrid screening picture signal, comprising amplitude and FM screened image signal.Utilize the binary modulated signal that generates to adopt the modulation system of tabling look-up that circulates, the shape of amplitude in the modulation hybrid screening picture signal, make that the shape of amplitude is regular in the hybrid screening changes, generate the hybrid screening picture signal that embeds anti-counterfeiting information, by the circulation modulation system of tabling look-up, make adjacent eight amplitudes generate eight-digit binary number data by the change of shape, make it carry anti-counterfeiting information, and this anti-counterfeiting information is embedded in the full page site, realize anti-counterfeit printing.
In extracting anti-counterfeiting information process flow diagram 2, at first gather the halftone dot image signal, through the fuzzy diagnosis to halftone dot space position, differentiate frequency-modulation halftone dot and amplitude, extract edge signal and the shape information of amplitude.The shape information of demodulation amplitude, output binary modulated signal.Binary modulated signal to demodulation output carries out channel-decoding and deciphering, recovers anti-counterfeiting signal and exports anti-counterfeiting information.
Claims (1)
1. one kind generates the binary modulated signal with anti-counterfeiting information by cryptographic calculation and chnnel coding, and by the circulation modulation system of tabling look-up anti-counterfeiting information is embedded in two dimensional encryption antiforging printing method in the full page, it is characterized in that: anti-counterfeiting information is carried out digitizing, generate eight one group binary message table, anti-counterfeiting information is image information, Word message or trademark information, i group octet binary message in the binary message table is denoted as Ni, i is the positive integer more than or equal to 0, the eight-digit binary number enciphered message is denoted as C, C is the positive integer of 0≤C≤256, Suan Fu ﹠amp; Adopt+,-, *, four kinds of computings of ÷, two scale-of-two control variable are denoted as k, control variable k is the positive integer of 0≤k≤3, Ni﹠amp during k=0; C is defined as Ni+C, Ni﹠amp during k=1; C is defined as Ni-C, Ni﹠amp during k=2; C is defined as Ni * C, Ni﹠amp during k=3; C is defined as Ni ÷ C, sets the initial value of encryption parameter C, and the initial value of setup control variable k is k=0, sets 8 binary message N in the scale-of-two anti-counterfeiting information table
iPosition control variable i=1, first 8 binary message N from scale-of-two anti-counterfeiting information table
1Beginning is carried out Ni﹠amp to each 8 binary message in the scale-of-two anti-counterfeiting information table; The C cryptographic calculation, and each 8 binary message is being carried out Ni﹠amp; Carry out the k+1 computing in the time of the C cryptographic calculation, make next computing point to Ni﹠amp; C wherein k has increased by 1, by each 8 binary message in the scale-of-two anti-counterfeiting information table are carried out Ni﹠amp; The C cryptographic calculation, generate binary add tight defense fake information table, the shape of amplitude is set to two kinds: and ◇, wherein is defined as numeral 0, ◇ is defined as numeral 1, utilize the binary add confidential information that generates through chnnel coding, generation has eight one group of binary modulated signals of error detecting and error correcting function, original continuous is changed the line map image signal through rasterizing processing (RIP) and hybrid screening output shadow tone hybrid screening picture signal, comprising amplitude and FM screened image signal, utilize the binary modulated signal that generates to adopt the shape of amplitude in the circulation look-up table modulation system modulation hybrid screening picture signal, the shape that makes amplitude is according to and ◇ is regular changes, make that adjacent eight amplitudes carry the eight-digit binary number anti-counterfeiting information by the change of shape in the hybrid screening picture signal, thereby be created on the hybrid screening picture signal that embeds anti-counterfeiting information in the full page site, realize anti-counterfeit printing.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101022499A (en) * | 2007-03-06 | 2007-08-22 | 北京大学 | Method for abstracting graph and text infromation utilizing half-hue image networking hiding |
| CN101295343A (en) * | 2008-06-19 | 2008-10-29 | 福建鸿博印刷股份有限公司 | Two-dimensional code multi-enciphering anti-fake printing method |
| CN101699845A (en) * | 2009-10-20 | 2010-04-28 | 北京印刷学院 | Encryption counterfeit printing technology of frequency modulated halftone dot space position for pseudo random signal modulation printed matter |
| CN101777134A (en) * | 2010-03-01 | 2010-07-14 | 北京印刷学院 | Presswork encryption security printing technology based on multi-system quadrature amplitude modulation |
| CN102402696A (en) * | 2011-04-25 | 2012-04-04 | 北京印刷学院 | Multi-dimensional encryption anti-counterfeiting printing technology based on binary signals |
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- 2012-10-22 CN CN2012104023770A patent/CN102945424A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101022499A (en) * | 2007-03-06 | 2007-08-22 | 北京大学 | Method for abstracting graph and text infromation utilizing half-hue image networking hiding |
| CN101295343A (en) * | 2008-06-19 | 2008-10-29 | 福建鸿博印刷股份有限公司 | Two-dimensional code multi-enciphering anti-fake printing method |
| CN101699845A (en) * | 2009-10-20 | 2010-04-28 | 北京印刷学院 | Encryption counterfeit printing technology of frequency modulated halftone dot space position for pseudo random signal modulation printed matter |
| CN101777134A (en) * | 2010-03-01 | 2010-07-14 | 北京印刷学院 | Presswork encryption security printing technology based on multi-system quadrature amplitude modulation |
| CN102402696A (en) * | 2011-04-25 | 2012-04-04 | 北京印刷学院 | Multi-dimensional encryption anti-counterfeiting printing technology based on binary signals |
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Application publication date: 20130227 |