CN102955966B - Binary anti-counterfeit printing method by reverse synchronous increasing encryption - Google Patents
Binary anti-counterfeit printing method by reverse synchronous increasing encryption Download PDFInfo
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- CN102955966B CN102955966B CN201210404244.7A CN201210404244A CN102955966B CN 102955966 B CN102955966 B CN 102955966B CN 201210404244 A CN201210404244 A CN 201210404244A CN 102955966 B CN102955966 B CN 102955966B
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Abstract
The invention provides a binary anti-counterfeit printing method by reverse synchronous increasing encryption. According to the method, the binary anti-counterfeit information is converted into a binary modulating signal by encrypting operation and channel coding; the anti-counterfeit information is nested into the whole page based on the ordinal variation of the shapes of amplitude-modulated dots according to a modulating mode under circulating look-up table; and the anti-counterfeit information can be distinguished from any fragment during distinguishing printing materials. The method can be widely applied to the field of counterfeit preventing of printing materials.
Description
Technical field:
The present invention relates to a kind of anti-counterfeiting printing technology, particularly a kind of reverse sync increment encryption scale-of-two 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, eight-digit binary number encryption parameter is denoted as C, and encryption parameter C is the integer of 0≤C≤255, and two binary operators and order of operation control variable are denoted as k, and operator and order of operation control variable k are the integer of 0≤k≤3, operator
adopt+,-, ×, ÷ tetra-kinds of computings, when operator and order of operation control variable k=0
be defined as+, × ,-, ÷ ,+, ÷, × ,-, ÷ computing, when operator and order of operation control variable k=1
be defined as ÷ ,+,+, × ,-, ÷ ,+, ÷, × computing, when operator and order of operation control variable k=2
be defined as-, ÷ ,+, × ,+, ÷, × ,-, ÷ computing, when operator and order of operation control variable k=3
be defined as+, ÷ ,+, × ,-, ÷, × ,-, ÷ computing, become sequence cryptographic calculation when operator and order of operation control variable k=0 and be defined as
become sequence cryptographic calculation when operator and order of operation control variable k=1 to be defined as
become sequence cryptographic calculation when operator and order of operation control variable k=2 to be defined as
become sequence cryptographic calculation when operator and order of operation control variable k=3 to be defined as
set 16 binary message N in 16 one group scale-of-two anti-counterfeiting information table
iposition control variable i=1, the initial value of setting encryption parameter C, the initial value k=0 of setting operator and order of operation control variable k, first group of 16 binary message N from 16 one group scale-of-two anti-counterfeiting information table
1start, first group of 16 binary message in 16 one group scale-of-two anti-counterfeiting information table are carried out
become sequence cryptographic calculation, and first group of 16 binary message is being carried out
carry out i+1 and k+1 computing while becoming sequence cryptographic calculation, next computing is pointed to
wherein i and k both increases 1, by carrying out change sequence cryptographic calculation to each group 16 binary messages in 16 one group scale-of-two anti-counterfeiting information table, generate the scale-of-two encryption anti-fake information table of 16 group, the shape of amplitude is set to two kinds: and ◇, wherein is defined as numeral 0, ◇ is 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, change sequence cryptographic calculation is carried out to each group 16 binary messages in 16 one group scale-of-two anti-counterfeiting information table, 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 are through chnnel coding, generate the binary modulated signal with 16 group of error detecting and error correcting function.Chnnel coding can adopt loop coding, the various ways such as 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, 16 the one group of binary modulated signals generated are utilized to adopt the shape of amplitude in circulation look-up table modulation system modulation hybrid screening picture signal, the shape of amplitude is changed according to and ◇ is regular, adjacent 16 amplitudes in hybrid screening picture signal are made to 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, it is known by ciphering process,
During operator control variable k=0
During operator control variable k=1
During operator control variable k=2
During operator control variable k=3
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 group 16 binary messages in scale-of-two deciphering anti-counterfeiting information table
i=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, eight-digit binary number encryption parameter is denoted as C, and encryption parameter C is the integer of 0≤C≤255, and two binary operators and order of operation control variable are denoted as k, and operator and order of operation control variable k are the integer of 0≤k≤3, operator
adopt+,-, ×, ÷ tetra-kinds of computings, when operator and order of operation control variable k=0
be defined as+, × ,-, ÷ ,+, ÷, × ,-, ÷ computing, when operator and order of operation control variable k=1
be defined as ÷ ,+,+, × ,-, ÷ ,+, ÷, × computing, when operator and order of operation control variable k=2
be defined as-, ÷ ,+, × ,+, ÷, × ,-, ÷ computing, when operator and order of operation control variable k=3
be defined as+, ÷ ,+, × ,-, ÷, × ,-, ÷ computing, become sequence cryptographic calculation when operator and order of operation control variable k=0 and be defined as
become sequence cryptographic calculation when operator and order of operation control variable k=1 to be defined as
become sequence cryptographic calculation when operator and order of operation control variable k=2 to be defined as
become sequence cryptographic calculation when operator and order of operation control variable k=3 to be defined as
set 16 binary message N in 16 one group scale-of-two anti-counterfeiting information table
iposition control variable i=1, the initial value of setting encryption parameter C, the initial value k=0 of setting operator and order of operation control variable k, first group of 16 binary message N from 16 one group scale-of-two anti-counterfeiting information table
1start, first group of 16 binary message in 16 one group scale-of-two anti-counterfeiting information table are carried out
become sequence cryptographic calculation, and first group of 16 binary message is being carried out
carry out i+1 and k+1 computing while becoming sequence cryptographic calculation, next computing is pointed to
wherein i and k both increases 1, by carrying out change sequence cryptographic calculation to each group 16 binary messages in 16 one group scale-of-two anti-counterfeiting information table, generate the scale-of-two encryption anti-fake information table of 16 group, the shape of amplitude is set to two kinds: and ◇, wherein be defined as numeral 0, ◇ be defined as numeral 1,16 the scale-of-two encryption anti-fake information generated, 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 shadow tone hybrid screening picture signal, to make in hybrid screening that the shape of amplitude is regular to change, generate the shadow tone 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 one group of 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, it is known by ciphering process,
During operator control variable k=0
During operator control variable k=1
During operator control variable k=2
During operator control variable k=3
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, computing is decrypted to each group 16 binary messages in scale-of-two deciphering anti-counterfeiting information table, 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 reverse sync increment encryption scale-of-two 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, eight-digit binary number encryption parameter is denoted as C, and encryption parameter C is the integer of 0≤C≤255, and two binary operators and order of operation control variable are denoted as k, and operator and order of operation control variable k are the integer of 0≤k≤3, operator
adopt+,-, ×, ÷ tetra-kinds of computings, when operator and order of operation control variable k=0
be defined as+, × ,-, ÷ ,+, ÷, × ,-, ÷ computing, when operator and order of operation control variable k=1
be defined as ÷ ,+,+, × ,-, ÷ ,+, ÷, × computing, when operator and order of operation control variable k=2
be defined as-, ÷ ,+, × ,+, ÷, × ,-, ÷ computing, when operator and order of operation control variable k=3
be defined as+, ÷ ,+, × ,-, ÷, × ,-, ÷ computing, become sequence cryptographic calculation when operator and order of operation control variable k=0 and be defined as
become sequence cryptographic calculation when operator and order of operation control variable k=1 to be defined as
become sequence cryptographic calculation when operator and order of operation control variable k=2 to be defined as
become sequence cryptographic calculation when operator and order of operation control variable k=3 to be defined as
set 16 binary message N in 16 one group scale-of-two anti-counterfeiting information table
iposition control variable i=1, the initial value of setting encryption parameter C, the initial value k=0 of setting operator and order of operation control variable k, first group of 16 binary message N from 16 one group scale-of-two anti-counterfeiting information table
1start, first group of 16 binary message in 16 one group scale-of-two anti-counterfeiting information table are carried out
become sequence cryptographic calculation, and first group of 16 binary message is being carried out
carry out i+1 and k+1 computing while becoming sequence cryptographic calculation, next computing is pointed to
wherein i and k both increases 1, by carrying out change sequence cryptographic calculation to each group 16 binary messages in 16 one group scale-of-two anti-counterfeiting information table, generate the scale-of-two encryption anti-fake information table of 16 group, the shape of amplitude is set to two kinds: and ◇, wherein is defined as numeral 0, ◇ is 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, 16 the one group of binary modulated signals generated are utilized to adopt the shape of amplitude in circulation look-up table modulation system modulation shadow tone hybrid screening picture signal, the shape of amplitude is changed according to and ◇ is regular, adjacent 16 amplitudes in shadow tone 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 shadow tone hybrid screening picture signal embedding anti-counterfeiting information in full page site, realize anti-counterfeit printing.
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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 |
| 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 |
| 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 |
| 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 |
-
2012
- 2012-10-22 CN CN201210404244.7A patent/CN102955966B/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 |
| 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 |
| 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 |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 基于身份的十进制加密技术研究;刘连浩;《计算机工程与应用》;20050821;第154页左栏第2段 * |
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