CN102945469B - Double-variant two-dimensional encryption binary anti-counterfeiting printing method - Google Patents

Abstract

The invention discloses a double-variant two-dimensional encryption binary anti-counterfeiting printing method which comprises the following steps: performing encrypting operation and channel encoding to binary anti-counterfeiting information to generate a binary modulating signal, and adopting a modulation mode of a looped look-up table method to embed the anti-counterfeiting information into the whole page through sequential change in a shape of amplitude-modulated dot. Therefore, the anti-counterfeiting information can be recognized from any fragment during presswork recognition. The method can be widely applied to the anti-counterfeiting field of presswork.

Description

Double-variant two-dimensional encrypted binary antiforging printing method

Art:

The present invention relates to a kind of anti-counterfeiting printing technology, particularly a kind of Double-variant two-dimensional encrypted binary anti-counterfeiting printing technology, this anti-counterfeiting printing technology may be used for the false proof of various printed matter.

Background technology:

Existing comparatively common method for anti-counterfeit has following several: the first is laser anti-false sign, by laser recessive ink daylight fluorescence ink printing technology, the symbol of product or special identification icon are printed to the anti-fake label of product, and same class product uses same labeling, because anti-fake label is easier to forge, and the anti-fake label forged is used on fake products, cause the true and false of product to obscure, be therefore difficult to effectively false proof.The second is cipher counterfeit-proof labeling, its method adopted is that every part product compiles one group of number, the coding of every part product is not identical, this number is printed on labeling and also hides, simultaneously by this number stored in can for consumer query Computer Database in, when consumer buys product, number in mark is compared identification by phone or networking computer input Computer Database, identical be true, difference is vacation, method is simple, identify easily, not easily forge, but in actual use, rear printing labeling is generated because coded data is that computing machine is unified.The true and false coded data of representative products may be illegally duplicated fraud, and meanwhile, the coding of coding also on the recyclable product do not inquired about is made mark and be attached on false pain product, and antifalse effect is difficult to ensure.The third is texture anti-fake, false proof with the textural characteristics on its labeling, although more difficult forgery, but due to the serial number of only bidding subsides, and be plain code, every piece of labeling can be inquired about repeatedly, and fake producer forges by this feature batch after the presence or absence phenomenon in the necessary textural characteristics reflected when the sequence number on labeling and inquiry and grid being plagiarized by warehouseman or shop-assistant.In sum, all there is certain shortcoming in existing method for anti-counterfeit, thus can not from preventing fake products at all.

Summary of the invention:

In order to overcome the shortcoming that existing various printed matter anti-counterfeiting printing technology exists, the deficiency that the present invention is directed to the existence of existing printed matter anti-counterfeiting printing technology is improved prior art, propose the encryption counterfeit printing technology of the shape of a kind of scale-of-two coded signal modulation printed matter amplitude, anti-counterfeiting information is embedded in full page by the change of the shape of amplitude by this anti-counterfeiting printing technology, anti-counterfeiting information can be identified from any one fragment when printed matter identification, therefore there is very strong crush resistance, fundamentally can stop to adopt and take a picture, scanning waits bootlegging behavior.

The technical solution adopted for the present invention to solve the technical problems is: separately process the amplitude in flexographic printing hybrid screening and frequency-modulation halftone dot, utilize image information, Word message, the anti-counterfeiting information such as trademark information generate the scale-of-two anti-counterfeiting information table of 8 group, for preventing producing information spillover in ciphering process, in scale-of-two anti-counterfeiting information table 8 one group of binary message is expanded to 16 one group of binary messages, generate 16 the one group scale-of-two anti-counterfeiting information table that most-significant byte is 0 entirely, i-th group of 16 binary message in 16 one group scale-of-two anti-counterfeiting information table are denoted as N _i, i be greater than 0 positive integer, binary operator control variable is denoted as k, and operator control variable k is the integer of 0≤k≤3, and eight control variable are denoted as j, and control variable j is the integer of 0≤j≤256, operator@ ¹ _k,@ ² _k,@ ³ _k,@ ⁴ _k,@ ⁵ _k,@ ⁶ _kadopt+,-, ×, ÷ tetra-kinds of operators ,@during operator control variable k=0 ¹ _k,@ ² _k,@ ³ _k,@ ⁴ _k,@ ⁵ _k,@ ⁶ _kbe defined as respectively+, × ,-, ÷ ,+, ÷ ,@during operator control variable k=1 ¹ _k,@ ² _k,@ ³ _k,@ ⁴ _k,@ ⁵ _k,@ ⁶ _kbe defined as respectively+, ÷ ,-, × ,+, ÷ ,@during operator control variable k=2 ¹ _k,@ ² _k,@ ³ _k,@ ⁴ _k,@ ⁵ _k,@ ⁶ _kbe defined as respectively-, ÷ ,+, × ,+, ÷ ,@during operator control variable k=3 ¹ _k,@ ² _k,@ ³ _k,@ ⁴ _k,@ ⁵ _k,@ ⁶ _kbe defined as respectively+, × ,+, ÷ ,-, ÷, setting operator control variable j and k initial value j=0 and k=0, set 16 binary message N in 16 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 ₁start, [(N is carried out to each 16 binary message in 16 one group scale-of-two anti-counterfeiting information table _i@ ¹ _k(j+k+1)@ ² _k(j+k+2))+(N _i@ ³ _k(j+k+3)@ ⁴ _k(j+k+4))+(N _i@ ⁵ _k(j+k+5)@ ⁶ _k(j+k+6)] cryptographic calculation, and [(N is being carried out to each 16 binary message _i@ ¹ _k(j+k+1)@ ² _k(j+k+2))+(N _i@ ³ _k(j+k+3)@ ⁴ _k(j+k+4))+(N _i@ ⁵ _k(j+k+5)@ ⁶ _k(j+k+6)] carry out i+1, j+1 and k+1 computing while cryptographic calculation, make next computing point to [(N _i@ ¹ _k(j+k+1)@ ² _k(j+k+2))+(N _i@ ³ _k(j+k+3)@ ⁴ _k(j+k+4))+(N _i@ ⁵ _k(j+k+5)@ ⁶ _k(j+k+6)] wherein i, j and k both increase 1, by carrying out [(N to each 16 binary message in 16 one group scale-of-two anti-counterfeiting information table _i@ ¹ _k(j+k+1)@ ² _k(j+k+2))+(N _i@ ³ _k(j+k+3)@ ⁴ _k(j+k+4))+(N _i@ ⁵ _k(j+k+5)@ ⁶ _k(j+k+6)] cryptographic calculation, generates the scale-of-two encryption anti-fake information table of 16 group, the shape of amplitude be set to two kinds: and wherein be defined as numeral 0, be defined as numeral 1, utilize the scale-of-two encryption anti-fake information of 16 group generated 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, to make in hybrid screening that the shape of amplitude is well-regulated to change, after modulation, adjacent 16 amplitudes form one group of 16 binary message, it is made to carry anti-counterfeiting information, and make this anti-counterfeiting information be embedded in full page site, can more effectively resist based on camera, scanner, the bootlegging behaviors such as electronic document.Obvious embed extractible anti-counterfeiting information by non-in printed matter, valid certificates can be provided for genuine piece, there is stronger anti-forgery ability simultaneously, and do not increase extra false proof cost.

For solving above-mentioned technical matters, first digitizing is carried out to anti-counterfeiting information, generate the scale-of-two anti-counterfeiting information table of 8 group, anti-counterfeiting information can be image information, Word message, trademark information etc., in scale-of-two anti-counterfeiting information table 8 one group of binary message is expanded to 16 one group of binary messages, generate 16 the one group scale-of-two anti-counterfeiting information table that most-significant byte is 0 entirely, [(N is carried out to each 16 binary message in 16 one group scale-of-two anti-counterfeiting information table _i@ ¹ _k(j+k+1)@ ² _k(j+k+2))+(N _i@ ³ _k(j+k+3)@ ⁴ _k(j+k+4))+(N _i@ ⁵ _k(j+k+5)@ ⁶ _k(j+k+6)] cryptographic calculation, generate the scale-of-two encryption anti-fake information table of 16 group, 16 binary messages in 16 the one group scale-of-two encryption anti-fake information table that utilization generates, through chnnel coding, generate the binary modulated signal with 16 group of error detecting and error correcting function.Chnnel coding can adopt the various ways such as loop coding, convolutional encoding or Turbo coding, image signal of original continuous being changed the line map exports shadow tone hybrid screening picture signal through rasterizing process (RIP) and hybrid screening, comprising amplitude and FM screened image signal, utilize 16 the one group of binary modulated signals generated to adopt the shape of amplitude in circulation look-up table modulation systems modulation hybrid screening picture signals, make the shape of amplitude according to and regularly to change, make adjacent 16 amplitudes in hybrid screening picture signal carry 16 scale-of-two anti-counterfeiting information by the change of shape, thus be created on the hybrid screening picture signal embedding anti-counterfeiting information in full page site, realize anti-counterfeit printing.

When extracting anti-counterfeiting information, first gather halftone dot image signal, through the fuzzy diagnosis to the shape of amplitude, differentiate the shape of amplitude, extract edge signal and the shape information of amplitude, the shape information of demodulation amplitude, exports the binary modulated signal of 16 group.Carry out channel-decoding to the binary modulated signal of 16 group that demodulation exports, generate the scale-of-two deciphering anti-counterfeiting information table of 16 group after channel-decoding, 16 binary messages of being deciphered by scale-of-two in anti-counterfeiting information table are denoted as H _i, by the known H of ciphering process _i=[(N _i@ ¹ _k(j+k+1)@ ² _k(j+k+2))+(N _i@ ³ _k(j+k+3)@ ⁴ _k(j+k+4))+(N _i@ ⁵ _k(j+k+5)@ ⁶ _k(j+k+6)], in scale-of-two deciphering anti-counterfeiting information table, the position control initial guess of 16 binary message Hi is set as i=1, first H from scale-of-two deciphering anti-counterfeiting information table ₁start, H is carried out to each 16 binary message in scale-of-two deciphering anti-counterfeiting information table _i=[(N _i@ ¹ _k(j+k+1)@ ² _k(j+k+2))+(N _i@ ³ _k(j+k+3)@ ⁴ _k(j+k+4))+(N _i@ ⁵ _k(j+k+5)@ ⁶ _k(j+k+6)] decrypt operation, solves scale-of-two anti-counterfeiting information N _i, generate 16 the one group scale-of-two anti-counterfeiting information table that most-significant byte is 0 entirely, remove most-significant byte, generate the scale-of-two anti-counterfeiting information table of 8 group, recover anti-counterfeiting signal and export anti-counterfeiting information.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the present invention is further described.

Fig. 1 loads anti-counterfeiting information process flow diagram.

Fig. 2 extracts anti-counterfeiting information process flow diagram.

Embodiment

In loading anti-counterfeiting information process flow diagram 1, original anti-counterfeiting information (image, word, trade mark) is through digitized processing, generate the scale-of-two anti-counterfeiting information table of 8 group, in scale-of-two anti-counterfeiting information table 8 one group of binary message is expanded to 16 one group of binary messages, generate 16 the one group scale-of-two anti-counterfeiting information table that most-significant byte is 0 entirely, i-th group of 16 binary message in 16 one group scale-of-two anti-counterfeiting information table are denoted as N _i, i be greater than 0 positive integer, binary operator control variable is denoted as k, and operator control variable k is the integer of 0≤k≤3, and eight control variable are denoted as j, and control variable j is the integer of 0≤j≤256, operator@ ¹ _k,@ ² _k,@ ³ _k,@ ⁴ _k,@ ⁵ _k,@ ⁶ _kadopt+,-, ×, ÷ tetra-kinds of operators ,@during operator control variable k=0 ¹ _k,@ ² _k,@ ³ _k,@ ⁴ _k,@ ⁵ _k,@ ⁶ _kbe defined as respectively+, × ,-, ÷ ,+, ÷ ,@during operator control variable k=1 ¹ _k,@ ² _k,@ ³ _k,@ ⁴ _k,@ ⁵ _k,@ ⁶ _kbe defined as respectively+, ÷ ,-, × ,+, ÷ ,@during operator control variable k=2 ¹ _k,@ ² _k,@ ³ _k,@ ⁴ _k,@ ⁵ _k,@ ⁶ _kbe defined as respectively-, ÷ ,+, × ,+, ÷ ,@during operator control variable k=3 ¹ _k,@ ² _k,@ ³ _k,@ ⁴ _k,@ ⁵ _k,@ ⁶ _kbe defined as respectively+, × ,+, ÷ ,-, ÷, setting operator control variable j and k initial value j=0 and k=0, set 16 binary message N in 16 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 ₁start, [(N is carried out to each 16 binary message in 16 one group scale-of-two anti-counterfeiting information table _i@ ¹ _k(j+k+1)@ ² _k(j+k+2))+(N _i@ ³ _k(j+k+3)@ ⁴ _k(j+k+4))+(N _i@ ⁵ _k(j+k+5)@ ⁶ _k(j+k+6)] cryptographic calculation, and [(N is being carried out to each 16 binary message _i@ ¹ _k(j+k+1)@ ² _k(j+k+2))+(N _i@ ³ _k(j+k+3)@ ⁴ _k(j+k+4))+(N _i@ ⁵ _k(j+k+5)@ ⁶ _k(j+k+6)] carry out i+1, j+1 and k+1 computing while cryptographic calculation, make next computing point to [(N _i@ ¹ _k(j+k+1)@ ² _k(j+k+2))+(N _i@ ³ _k(j+k+3)@ ⁴ _k(j+k+4))+(N _i@ ⁵ _k(j+k+5)@ ⁶ _k(j+k+6)] wherein i, j and k both increase 1, by carrying out [(N to each 16 binary message in 16 one group scale-of-two anti-counterfeiting information table _i@ ¹ _k(j+k+1)@ ² _k(j+k+2))+(N _i@ ³ _k(j+k+3)@ ⁴ _k(j+k+4))+(N _i@ ⁵ _k(j+k+5)@ ⁶ _k(j+k+6)] cryptographic calculation, generates the scale-of-two encryption anti-fake information table of 16 group, the shape of amplitude be set to two kinds: and wherein be defined as numeral 0, be defined as numeral 1,16 scale-of-two encryption anti-fake information of generation, through chnnel coding, generate the 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.Image signal of original continuous being changed the line map exports shadow tone hybrid screening picture signal, comprising amplitude and FM screened image signal through rasterizing process (RIP) and hybrid screening.The binary modulated signal generated is utilized to adopt circulation to table look-up modulation system, the shape of amplitude in modulation hybrid screening picture signal, to make in hybrid screening that the shape of amplitude is regular to change, generate the hybrid screening picture signal embedding anti-counterfeiting information, by the modulation system of tabling look-up that circulates, adjacent 16 amplitudes are made to generate 16 bit binary data by the change of shape, it is made to carry anti-counterfeiting information, and this anti-counterfeiting information is embedded in full page site, realize anti-counterfeit printing.

In extraction anti-counterfeiting information process flow diagram 2, when extracting anti-counterfeiting information, first halftone dot image signal is gathered, through the fuzzy diagnosis to the shape of amplitude, differentiate the shape of amplitude, extract edge signal and the shape information of amplitude, the shape information of demodulation amplitude, exports the binary modulated signal of 16 group.Carry out channel-decoding to the binary modulated signal of 16 group that demodulation exports, generate the scale-of-two deciphering anti-counterfeiting information table of 16 group after channel-decoding, 16 binary messages of being deciphered by scale-of-two in anti-counterfeiting information table are denoted as H _i, by the known H of ciphering process _i=[(N _i@ ¹ _k(j+k+1)@ ² _k(j+k+2))+(N _i@ ³ _k(j+k+3)@ ⁴ _k(j+k+4))+(N _i@ ⁵ _k(j+k+5)@ ⁶ _k(j+k+6)], 16 binary message H in scale-of-two deciphering anti-counterfeiting information table _iposition control initial guess be set as i=1, first H from scale-of-two deciphering anti-counterfeiting information table ₁start, H is carried out to each 16 binary message in scale-of-two deciphering anti-counterfeiting information table _i=[(N _i@ ¹ _k(j+k+1)@ ² _k(j+k+2))+(N _i@ ³ _k(j+k+3)@ ⁴ _k(j+k+4))+(N _i@ ⁵ _k(j+k+5)@ ⁶ _k(j+k+6)] decrypt operation, solves scale-of-two anti-counterfeiting information N _i, generate 16 the one group scale-of-two anti-counterfeiting information table that most-significant byte is 0 entirely, remove most-significant byte, generate the scale-of-two anti-counterfeiting information table of 8 group, recover anti-counterfeiting signal and export anti-counterfeiting information.

Claims (1)

1. anti-counterfeiting information is generated binary modulated signal by cryptographic calculation and chnnel coding by one kind, and anti-counterfeiting information is embedded in the Double-variant two-dimensional encrypted binary antiforging printing method in full page by modulation system of tabling look-up by circulating, it is characterized in that: digitizing is carried out to anti-counterfeiting information, generate the scale-of-two anti-counterfeiting information table of 8 group, anti-counterfeiting information is image information, Word message or trademark information, for preventing producing information spillover in ciphering process, in scale-of-two anti-counterfeiting information table 8 one group of binary message is expanded to 16 one group of binary messages, generate 16 the one group scale-of-two anti-counterfeiting information table that most-significant byte is 0 entirely, i-th group of 16 binary message in 16 one group scale-of-two anti-counterfeiting information table are denoted as N _i, i be greater than 0 positive integer, binary operator control variable is denoted as k, and operator control variable k is the integer of 0≤k≤3, and eight control variable are denoted as j, and control variable j is the integer of 0≤j≤256, operator@ ¹ _k,@ ² _k,@ ³ _k,@ ⁴ _k,@ ⁵ _k,@ ⁶ _kadopt+,-, ×, ÷ tetra-kinds of operators ,@during operator control variable k=0 ¹ _k,@ ² _k,@ ³ _k,@ ⁴ _k,@ ⁵ _k,@ ⁶ _kbe defined as respectively+, × ,-, ÷ ,+, ÷ ,@during operator control variable k=1 ¹ _k,@ ² _k,@ ³ _k,@ ⁴ _k,@ ⁵ _k,@ ⁶ _kbe defined as respectively+, ÷ ,-, × ,+, ÷ ,@during operator control variable k=2 ¹ _k,@ ² _k,@ ³ _k,@ ⁴ _k,@ ⁵ _k,@ ⁶ _kbe defined as respectively-, ÷ ,+, × ,+, ÷ ,@during operator control variable k=3 ¹ _k,@ ² _k,@ ³ _k,@ ⁴ _k,@ ⁵ _k,@ ⁶ _kbe defined as respectively+, × ,+, ÷ ,-, ÷, setting operator control variable j and k initial value j=0 and k=0, set 16 binary message N in 16 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 ₁start, [(N is carried out to each 16 binary message in 16 one group scale-of-two anti-counterfeiting information table ₁@ ¹ _k(j+k+1)@ ² _k(j+k+2))+(N ₁@ ³ _k(j+k+3)@ ⁴ _k(j+k+4))+(N ₁@ ⁵ _k(j+k+5)@ ⁶ _k(j+k+6)] cryptographic calculation, and [(N is being carried out to each 16 binary message ₁@ ¹ _k(j+k+1)@ ² _k(j+k+2)+(N ₁@ ³ _k(j+k+3)@ ⁴ _k(j+k+4))+(N ₁@ ⁵ _k(j+k+5)@ ⁶ _k(j+k+6)] carry out i+1, j+1 and k+1 computing while cryptographic calculation, make next computing point to [(N ₁@ ¹ _k(j+k+1)@ ² _k(j+k+2))+(N ₁@ ³ _k(j+k+3)@ ⁴ _k(j+k+4))+(N ₁@ ⁵ _k(j+k+5)@ ⁶ _k(j+k+6)] wherein i, j and k both increase 1, by carrying out [(N to each 16 binary message in 16 one group scale-of-two anti-counterfeiting information table ₁@ ¹ _k(j+k+1)@ ² _k(j+k+2))+(N ₁@ ³ _k(j+k+3)@ ⁴ _k(j+k+4))+(N ₁@ ⁵ _k(j+k+5)@ ⁶ _k(j+k+6)] cryptographic calculation, generates the scale-of-two encryption anti-fake information table of 16 group, the shape of amplitude be set to two kinds: and , wherein be defined as numeral 0, be defined as numeral 1, utilize the scale-of-two encryption anti-fake information of 16 group generated through chnnel coding, generate 16 one group of binary modulated signals with error detecting and error correcting function, image signal of original continuous being changed the line map exports shadow tone hybrid screening picture signal through rasterizing process (RIP) and hybrid screening, comprising amplitude and FM screened image signal, utilize 16 the one group of binary modulated signals generated to adopt the shape of amplitude in circulation look-up table modulation systems modulation hybrid screening picture signals, make the shape of amplitude according to and regularly to change, adjacent 16 amplitudes in hybrid screening picture signal are made to carry 16 scale-of-two encryption anti-fake information by the change of shape, thus be created on the hybrid screening picture signal embedding anti-counterfeiting information in full page site, realize anti-counterfeit printing.