CN102945433A - Binary anti-fake printing method by two-dimensional dynamic variable-parameter encryption - Google Patents
Binary anti-fake printing method by two-dimensional dynamic variable-parameter encryption Download PDFInfo
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- CN102945433A CN102945433A CN2012104026586A CN201210402658A CN102945433A CN 102945433 A CN102945433 A CN 102945433A CN 2012104026586 A CN2012104026586 A CN 2012104026586A CN 201210402658 A CN201210402658 A CN 201210402658A CN 102945433 A CN102945433 A CN 102945433A
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Abstract
The invention relates to a binary anti-fake printing method by two-dimensional dynamic variable-parameter encryption. According to the method, binary anti-fake information can be converted into a binary modulation signal by Ni@k(C+(j+h)) 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, particularly the dynamic variable element of a kind of two dimension is encrypted the scale-of-two anti-counterfeiting printing technology, and 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, number on the sign is compared identification by phone or networking computer input Computer Database, 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, utilize image information, Word message, the anti-counterfeiting information such as trademark information generate 8 one group scale-of-two anti-counterfeiting information table, for preventing producing information spillover in the ciphering process, 8 one group of binary messages in the scale-of-two anti-counterfeiting information table are expanded to 16 one group of binary messages, the generation most-significant byte is 0 16 one group scale-of-two anti-counterfeiting information table entirely, and 16 binary messages of the group of the i in 16 the one group scale-of-two anti-counterfeiting information table are denoted as N
iI is the positive integer greater than 0, the scale-of-two control variable is denoted as j and k, the binary steps control variable is denoted as h, and control variable k is the positive integer of 0＜=k＜=3, and control variable j is the positive integer of 0＜=j＜=256, step-length control variable h is the positive integer of 0＜=h＜=256, the eight-digit binary number encryption parameter is denoted as C, and encryption parameter C is the positive integer of 0＜=C＜=256, operator@
kAdopt+,-, *, four kinds of ÷ ,@during operator control variable k=0
kBe defined as "+" computing ,@during operator control variable k=1
kBe defined as "-" computing ,@during operator control variable k=2
kBe defined as " * " computing ,@during operator control variable k=3
kBe defined as " ÷ " computing, set the value of encryption parameter C and the value of step-length control variable h, after the value of the value of encryption parameter C and step-length control variable h is determined, the value of the value of C and step-length control variable h no longer changes in cryptographic calculation, set the initial value k=0 of operator control variable k and the initial value j=0 of j, set 16 binary message N in 16 the one group scale-of-two anti-counterfeiting information table
iPosition control variable i=1, first 16 binary message N from 16 one group scale-of-two anti-counterfeiting information table
1Beginning is carried out N to each 16 binary message in 16 the one group scale-of-two anti-counterfeiting information table
i@
k(C+(j+h)) cryptographic calculation, and each 16 binary message is being carried out N
i@
k(C+(j+h)) carry out i+1, j+1 and k+1 computing when cryptographic calculation, make next computing point to N
i@
k(C+(j+h)) (wherein i, j and k have increased by 1) is by carrying out N to each 16 binary message in 16 the one group scale-of-two anti-counterfeiting information table
i@
k(C+(j+h)) cryptographic calculation generates 16 one group binary add tight defense fake information table, and the shape of amplitude is set to two kinds:
With
, wherein
Be defined as the numeral 0,
Be defined as numeral 1, utilize 16 one group the binary add tight defense fake 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 16 amplitudes consist of one group of 16 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 bootlegging behaviors such as camera, scanner, electronic documents.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 8 one group scale-of-two anti-counterfeiting information table, anti-counterfeiting information can be image information, Word message, trademark information etc., 8 one group of binary messages in the scale-of-two anti-counterfeiting information table are expanded to 16 one group of binary messages, the generation most-significant byte is 0 16 one group scale-of-two anti-counterfeiting information table entirely, and each 16 binary message in 16 the one group scale-of-two anti-counterfeiting information table are carried out N
i@
k(C+(j+h)) cryptographic calculation, generate 16 one group binary add tight defense fake information table, utilize 16 binary messages process chnnel codings in 16 the one group binary add tight defense fake information table that generates, generate 16 one group binary modulated signal with error detecting and error correcting function.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, 16 one group of binary modulated signals that utilize to generate adopt the shapes of amplitude in the circulation look-up table modulation system modulation hybrid screening picture signals, the shape that makes amplitude according to
With
Regular changing makes that adjacent 16 amplitudes carry 16 scale-of-two anti-counterfeiting information by the change of shape in the hybrid screening picture signal, thereby is created on the hybrid screening picture signal that embeds anti-counterfeiting information in the full page site, realizes 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 is exported 16 one group binary modulated signal.16 one group 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, original anti-counterfeiting information (image, literal, trade mark) is through digitized processing, generate 8 one group scale-of-two anti-counterfeiting information table, 8 one group of binary messages in the scale-of-two anti-counterfeiting information table are expanded to 16 one group of binary messages, generate most-significant byte and entirely be 0 16 one group scale-of-two anti-counterfeiting information table, 16 binary messages of i group in 16 one group scale-of-two anti-counterfeiting information table are denoted as N
iI is the positive integer greater than 0, the scale-of-two control variable is denoted as j and k, the binary steps control variable is denoted as h, and control variable k is the positive integer of 0＜=k＜=3, and control variable j is the positive integer of 0＜=j＜=256, step-length control variable h is the positive integer of 0＜=h＜=256, the eight-digit binary number encryption parameter is denoted as C, and encryption parameter C is the positive integer of 0＜=C＜=256, operator@
kAdopt+,-, *, four kinds of ÷ ,@during operator control variable k=0
kBe defined as "+" computing ,@during operator control variable k=1
kBe defined as "-" computing ,@during operator control variable k=2
kBe defined as " * " computing ,@during operator control variable k=3
kBe defined as " ÷ " computing, set the value of encryption parameter C and the value of step-length control variable h, after the value of the value of encryption parameter C and step-length control variable h is determined, the value of the value of C and step-length control variable h no longer changes in cryptographic calculation, set the initial value k=0 of operator control variable k and the initial value j=0 of j, set 16 binary message N in 16 the one group scale-of-two anti-counterfeiting information table
iPosition control variable i=1, first 16 binary message N from 16 one group scale-of-two anti-counterfeiting information table
1Beginning is carried out N to each 16 binary message in 16 the one group scale-of-two anti-counterfeiting information table
i@
k(C+(j+h)) cryptographic calculation, and each 16 binary message is being carried out N
i@
k(C+(j+h)) carry out i+1, j+1 and k+1 computing when cryptographic calculation, make next computing point to N
i@
k(C+(j+h)) (wherein i, j and k have increased by 1) is by carrying out N to each 16 binary message in 16 the one group scale-of-two anti-counterfeiting information table
i@
k(C+(j+h)) cryptographic calculation generates 16 one group binary add tight defense fake information table, and the shape of amplitude is set to two kinds:
With
, wherein
Be defined as the numeral 0,
Be defined as numeral 1,16 binary add tight defense fake informations of generation generate 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 16 amplitudes generate 16 bit binary 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 circulation table look-up modulation system with anti-counterfeiting information be embedded in the full page two dimension dynamically variable element encrypt the scale-of-two antiforging printing method,
It is characterized in that:Anti-counterfeiting information is carried out digitizing, generate 8 one group scale-of-two anti-counterfeiting information table, anti-counterfeiting information is image information, Word message or trademark information, for preventing producing information spillover in the ciphering process, 8 one group of binary messages in the scale-of-two anti-counterfeiting information table are expanded to 16 one group of binary messages, the generation most-significant byte is 0 16 one group scale-of-two anti-counterfeiting information table entirely, and 16 binary messages of the group of the i in 16 the one group scale-of-two anti-counterfeiting information table are denoted as N
iI is the positive integer greater than 0, the scale-of-two control variable is denoted as j and k, the binary steps control variable is denoted as h, and control variable k is the positive integer of 0＜=k＜=3, and control variable j is the positive integer of 0＜=j＜=256, step-length control variable h is the positive integer of 0＜=h＜=256, the eight-digit binary number encryption parameter is denoted as C, and encryption parameter C is the positive integer of 0＜=C＜=256, operator@
kAdopt+,-, *, four kinds of ÷ ,@during operator control variable k=0
kBe defined as "+" computing ,@during operator control variable k=1
kBe defined as "-" computing ,@during operator control variable k=2
kBe defined as " * " computing ,@during operator control variable k=3
kBe defined as " ÷ " computing, set the value of encryption parameter C and the value of step-length control variable h, after the value of the value of encryption parameter C and step-length control variable h is determined, the value of the value of C and step-length control variable h no longer changes in cryptographic calculation, set the initial value k=0 of operator control variable k and the initial value j=0 of j, set 16 binary message N in 16 the one group scale-of-two anti-counterfeiting information table
iPosition control variable i=1, first 16 binary message N from 16 one group scale-of-two anti-counterfeiting information table
1Beginning is carried out N to each 16 binary message in 16 the one group scale-of-two anti-counterfeiting information table
i@
k(C+(j+h)) cryptographic calculation, and each 16 binary message is being carried out N
i@
k(C+(j+h)) carry out i+1, j+1 and k+1 computing when cryptographic calculation, make next computing point to N
i@
k(C+(j+h)) (wherein i, j and k have increased by 1) is by carrying out N to each 16 binary message in 16 the one group scale-of-two anti-counterfeiting information table
i@
k(C+(j+h)) cryptographic calculation generates 16 one group binary add tight defense fake information table, and the shape of amplitude is set to two kinds:
With
, wherein
Be defined as the numeral 0,
Be defined as numeral 1, utilize 16 one group the binary add tight defense fake information that generates through chnnel coding, generation has 16 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, 16 one group of binary modulated signals that utilize to generate adopt the shapes of amplitude in the circulation look-up table modulation system modulation hybrid screening picture signals, the shape that makes amplitude according to
With
Regular changing, make that adjacent 16 amplitudes carry 16 binary add tight defense fake informations 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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| CN201210402658.6A CN102945433B (en) | 2012-10-22 | 2012-10-22 | Binary anti-fake printing method by two-dimensional dynamic variable-parameter encryption |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5425103A (en) * | 1994-03-14 | 1995-06-13 | Shaw; William Y. | Variable-key cryptography system |
| CN1928916A (en) * | 2006-08-21 | 2007-03-14 | 顾泽苍 | Printing medium certificate documents and false proof handling method of copy thereof |
| 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 |
| CN102184428A (en) * | 2011-04-14 | 2011-09-14 | 北京印刷学院 | Encrypting anti-counterfeiting printing technology for modulating shapes of amplitude modulation dots of printed work through binary-system encrypting signal |
-
2012
- 2012-10-22 CN CN201210402658.6A patent/CN102945433B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5425103A (en) * | 1994-03-14 | 1995-06-13 | Shaw; William Y. | Variable-key cryptography system |
| CN1928916A (en) * | 2006-08-21 | 2007-03-14 | 顾泽苍 | Printing medium certificate documents and false proof handling method of copy thereof |
| 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 |
| CN102184428A (en) * | 2011-04-14 | 2011-09-14 | 北京印刷学院 | Encrypting anti-counterfeiting printing technology for modulating shapes of amplitude modulation dots of printed work through binary-system encrypting signal |
Non-Patent Citations (1)
| Title |
|---|
| YI XUMEI.ET AL: "The Shapes of Halftone-AM-dots Based on Information Hiding", 《2011 2ND INTERNATIONAL SYMPOSIUM ON INTELLIGENCE INFORMATION PROCESSING AND TRUSTED COMPUTING》 * |
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