CN103136565A - Multi-variable multi-parameter gradient ternary circulating encryption anti-fake information storage brand - Google Patents

Multi-variable multi-parameter gradient ternary circulating encryption anti-fake information storage brand Download PDF

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CN103136565A
CN103136565A CN2013100223109A CN201310022310A CN103136565A CN 103136565 A CN103136565 A CN 103136565A CN 2013100223109 A CN2013100223109 A CN 2013100223109A CN 201310022310 A CN201310022310 A CN 201310022310A CN 103136565 A CN103136565 A CN 103136565A
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binary system
binary
group
trade mark
counterfeiting information
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CN103136565B (en
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张立君
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Beijing Institute of Graphic Communication
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Beijing Institute of Graphic Communication
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Abstract

Provided is a multi-variable multi-parameter gradient ternary circulating encryption anti-fake information storage brand. According to the brand, binary system anti-fake information can be changed into binary system modulating signals through ternary circulating encryption and channel coding. The anti-fake information can be embedded into an entire brand page through orderly changes of conductivity of amplitude-modulated dots through a circulation look-up table modulation type. The anti-fake information can be identified from any arbitrary fragment in the brand identification process, and also can be applied to various anti-fake brands.

Description

Multivariate multi-parameter gradient ternary circulates anti-fake information storage trademark
Art：
The present invention relates to a kind of anti-false trademark, particularly a kind of multivariate multi-parameter gradient ternary circulation anti-fake information storage trademark, binary system encryption anti-fake information can be stored on the trade mark page and realize the false proof of trade mark by the trade mark, the trade mark can be used for extensive stock it is false proof in.
Background technology：
Anti-false trademark, also known as antifalsification label, anti-counterfeiting mark, anti-false sign, anti-fake label, are a kind of proof labels discerned the false from the genuine, prevent personation, are mark true and false, that distinguish marketing quality quality of the people for distinguishing merchandise resources during commodity circulation.Trademark anti-counterfeit is related to businessman, client and market safety, is related to protection businessman and the interests of client.The trade mark of China is audaciously innovated; employ laser anti-counterfeit, core micropore are false proof, invisible graph is false proof, magnetic ink is false proof, microfilm of characters is false proof, indicia distribution is false proof, light carving is false proof etc.; but false proof is high-tech trial of strength with struggle that is faking; advanced anti-counterfeiting technology has certain ageing again; so; trade mark anti-fake technique must constantly be lifted; could be false proof with being maintained the leading position forever in faking, this is also the basic assurance for protecting the interests of businessman and client to maintain commodity circulation safety.
The content of the invention:
In order to improve the reliability and security of trademark anti-counterfeit, the present invention is improved existing trade mark anti-fake technique for the deficiency that existing trademark anti-counterfeit is present, propose a kind of anti-counterfeiting information storage trade mark, the trade mark passes through the change to amplitude electric conductivity in brand printing, encryption anti-fake information is embedded on the whole trade mark page in binary system coded signal form, encryption anti-fake information can be recognized in any one fragment in brand recognition, therefore with very strong disguised and crush resistance.
The technical solution adopted for the present invention to solve the technical problems is：
Anti-counterfeiting information stores trade mark, is made up of trade mark page paper, the amplitude being printed on trade mark page paper, the horizontal scanning line being printed on trade mark page paper, the column scan line being printed on trade mark page paper, the image and word on trade mark page paper are made up of amplitude,
According to the binary system encryption anti-fake information of storage, a part of amplitude on trade mark page paper is formed by electrically conductive ink printing, another part amplitude on trade mark page paper is formed by dielectric ink printing, and the horizontal scanning line and column scan line on trade mark page paper are formed by the printing of electrically conducting transparent ink
The horizontal scanning line being printed on trade mark page paper has N bars, the column scan line being printed on trade mark page paper has M bars, the amplitude being printed on trade mark page paper is divided into N rows M row on trade mark paper, amplitude is neat arranged in arrays on trade mark page paper paper, i is allowed to take 1 to arrive N, j is allowed to take 1 to arrive M, j-th strip column scan line on trade mark page paper is electrically connected with the basal surface of each amplitude of the jth row on trade mark page paper, i-th horizontal scanning line on trade mark page paper is electrically connected with the upper surface of each amplitude of the i-th row on trade mark page paper
When the binary message for needing to store the trade mark page is read, the 1st article on trade mark page paper is set to high level successively to the N articles horizontal scanning line,
When the 1st article of horizontal scanning line on trade mark page paper is set to high level, the binary message of the 1st row storage on trade mark page paper is exported with 0,1 code form from the 1st bar of column scan line to the M bars column scan line, the amplitude that the 1st row on trade mark page paper is printed by electrically conductive ink exports binary message 1, the amplitude that the 1st row on trade mark page paper is printed by dielectric ink exports binary message 0, above-mentioned readout is repeated to other rows on trade mark page paper
In order to which the encryption for realizing trademark anti-counterfeit information is stored, processing is digitized to image false-proof information and character anti-counterfeiting information first, utilize image false-proof information and the binary system anti-counterfeiting information table of 8 one group of character anti-counterfeiting information generation, to prevent from producing information spillover in ciphering process, each 8 one group of binary system anti-counterfeiting information in binary system anti-counterfeiting information table are expanded into 32 one group of binary system anti-counterfeiting information, generate high 24 be all 0 32 one group of binary system anti-counterfeiting information tables, i-th group of 32 binary system anti-counterfeiting information in 32 one group of binary system anti-counterfeiting information tables are denoted as
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, i-th group of 32 binary system encryption anti-fake information in 32 one group of binary system encryption anti-fake information tables are denoted as Hi, i is the positive integer more than 0, and binary system encryption parameter is denoted as respectively
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With, encryption parameter
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For 0 to 256 binary system positive integer, binary system encryption variables are denoted as j, d, e, f, g, h, r, p and q respectively, encryption variables j, d, e, f, g, h, r, p and q are 0 to 256 binary system positive integer, binary operator control variable is denoted as k, binary operator controls the binary system positive integer that variable k is 0≤k≤7, operator
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Using+,-, ×, four kinds of operators, binary operator control variable k=0 when
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Be respectively defined as-,+, × ,+, × ,-, × ,+, during binary operator control variable k=1
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Be respectively defined as+, × ,+,+,-, × ,+, ×, during binary operator control variable k=2
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Be respectively defined as-, × ,+,+, × ,-,+,-, during binary operator control variable k=3
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Be respectively defined as-, × ,+,-, × ,-,+, ×, during binary operator control variable k=4
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Be respectively defined as+, × ,-, × ,+,-,+, ×, during binary operator control variable k=5
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Be respectively defined as × ,+, × ,-,+,+,-, ×, during binary operator control variable k=6
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Be respectively defined as × ,+,+,-, × ,+,+, ×, during binary operator control variable k=7
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Be respectively defined as+, ×, × ,-,+,-,-, ×, ternary circulation cryptographic calculation is defined as H during binary operator control variable k=0i=
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, ternary circulation cryptographic calculation is defined as H during binary operator control variable k=1i= 
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 , ternary circulation cryptographic calculation is defined as H during binary operator control variable k=2i=
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, ternary circulation cryptographic calculation is defined as H during binary operator control variable k=3i=
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, ternary circulation cryptographic calculation is defined as H during binary operator control variable k=4i=
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, ternary circulation cryptographic calculation is defined as H during binary operator control variable k=5i=
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, ternary circulation cryptographic calculation is defined as H during binary operator control variable k=6i=
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, ternary circulation cryptographic calculation is defined as H during binary operator control variable k=7i=
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, set encryption parameter
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Initial value, setting encryption variables j, d, e, f, g, h, r, p and q initial value set initial value that binary operator controls variable k as k=0, sets 32 binary system anti-counterfeiting information in 32 one group of binary system anti-counterfeiting information tables
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Position control variable i=1, setting 32 one group of binary system encryption anti-fake information tables in 32 binary system encryption anti-fake information HiPosition control variable i=1, it is right
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Ternary circulation cryptographic calculation（Wherein k=0）, generate first binary system encryption anti-fake information H in 32 one group of binary system encryption anti-fake information table1, it is right
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（Wherein k=1）, generate second binary system encryption anti-fake information H in 32 one group of binary system encryption anti-fake information table2, it is right
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Carry out H2=
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I+1, q+1, j+1, d+1, e+1, f+1, g+1, h+1, r+1, p+1 and k+1 computing are carried out while ternary circulation cryptographic calculation, next ternary circulation cryptographic calculation is pointed to H3=
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（Wherein k=2）, generate the 3rd binary system encryption anti-fake information H in 32 one group of binary system encryption anti-fake information table3, this ternary circulation cryptographic calculation goes on until last 32 binary system anti-counterfeiting information in binary system anti-counterfeiting information table always, by each 32 binary system anti-counterfeiting information in 32 one group of binary system anti-counterfeiting information tables
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Carry out ternary circulation cryptographic calculation, generation 32 one group of binary system encryption anti-fake information tables corresponding with 32 one group of binary system anti-counterfeiting information tables, processing is digitized to amplitude in label printing, amplitude is set to two kinds, the amplitude wherein printed by dielectric ink is defined as numeral 0, the amplitude printed by electrically conductive ink is defined as numeral 1, modulate the printing process of the amplitude on the trade mark page by circulating look-up table using 32 one group of binary system encryption anti-fake information of generation during label printing, the regular electric conductivity according to above two amplitude of amplitude on the trade mark page is changed by selecting dielectric ink and electrically conductive ink to print amplitude, adjacent 32 amplitudes constitute one group of 32 binary message on the trade mark page after modulation, so that carrying anti-counterfeiting information by the change of amplitude electric conductivity on the trade mark page, and the anti-counterfeiting information is embedded in whole trade mark page site, realize trademark anti-counterfeit, pass through non-obvious the embedded extractible anti-counterfeiting information in the trade mark page, valid certificates can be provided for true trade mark, there is stronger anti-forgery ability simultaneously.
To solve above-mentioned technical problem, processing is digitized to image false-proof information and character anti-counterfeiting information first, the binary system anti-counterfeiting information table of 8 one group of generation, each 8 one group of binary system anti-counterfeiting information in binary system anti-counterfeiting information table are expanded into 32 one group of binary system anti-counterfeiting information, generate high 24 be all 0 32 one group of binary system anti-counterfeiting information tables, ternary circulation cryptographic calculation is carried out to each 32 binary system anti-counterfeiting information in 32 one group of binary system anti-counterfeiting information tables, the binary system encryption anti-fake information table of 32 one group of generation, pass through channel coding using 32 binary system encryption anti-fake informations in binary system encryption anti-fake information table, 32 one group of binary modulated signal of the generation with error detecting and error correcting function, channel coding can use loop coding, convolutional encoding or Turbo coding diversified forms, picture signal is adjusted to be handled by rasterizing trade mark page original continuous（RIP）Halftoning hybrid screening picture signal is exported with hybrid screening, including amplitude and FM screened image signal, the electric conductivity of amplitude in hybrid screening picture signal is modulated using circulation look-up table modulation system using 32 one group of binary modulated signals of generation, make the electric conductivity of amplitude according to dielectric ink amplitude and electrically conductive ink amplitude is regular changes, adjacent 32 amplitudes in hybrid screening picture signal are made to carry 32 binary system anti-counterfeiting information by the change of electric conductivity, so as to generate the hybrid screening picture signal of the embedded anti-counterfeiting information in whole trade mark page site, realize the false proof of trade mark.
When extracting anti-counterfeiting information, trade mark page site electric conductivity signal is gathered first, by the identification of the electric conductivity to amplitude, differentiate the electric conductivity of amplitude, extract the electric conductivity information of amplitude, demodulate the electric conductivity information of trade mark page amplitude, the binary modulated signal of 32 one group of output, channel decoding is carried out to 32 one group of binary modulated signal of demodulation output, generation binary system decryption anti-counterfeiting information table after channel decoding, decrypts i-th group of 32 binary message in anti-counterfeiting information table by binary system and is denoted as Mi。
Binary system is decrypted into 32 binary message M in anti-counterfeiting information tableiPosition control variable i initial value design be i=1, set encryption parameter、
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, it is M that binary operator, which controls decryption computing during variable k=6,i=
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, it is M that binary operator, which controls decryption computing during variable k=7,i=
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, first M from binary system decryption anti-counterfeiting information table1Start, each 32 binary message M in anti-counterfeiting information table are decrypted to binary systemiCorresponding decryption computing is carried out, binary system anti-counterfeiting information is solved
Figure 171426DEST_PATH_IMAGE001
, generate high 24 be all 0 32 one group of binary system anti-counterfeiting information tables, remove high 24, recover 8 one group of binary system anti-counterfeiting information table of generation, recover anti-counterfeiting signal and simultaneously export anti-counterfeiting information.
Brief description of the drawings
The present invention is further described below in conjunction with the accompanying drawings.
Fig. 1 is the overall structure figure of the present invention.
Fig. 2 is A-A sectional views of the present invention.
Fig. 3 loads anti-counterfeiting information flow chart.
Fig. 4 extracts anti-counterfeiting information flow chart.
Embodiment
As in Fig. 1 and Fig. 2, anti-fake information storage trademark, it is made up of trade mark page paper 7-1, amplitude 6-1 to the 6-150 being printed on trade mark page paper 7-1, horizontal scanning line 1-1 to the 1-15 being printed on trade mark page paper 7-1, column scan line 2-1 to the 2-10 being printed on trade mark page paper 7-1, image and word on trade mark page paper 7-1 are made up of amplitude 6-1 to 6-150
According to storage binary system encryption anti-fake information, a part of amplitude on trade mark page paper 7-1 is formed by electrically conductive ink printing, another part amplitude on trade mark page paper 7-1 is formed by dielectric ink printing, horizontal scanning line 1-1 to 1-15 and column scan line 2-1 to 2-10 on trade mark page paper 7-1 are formed by the printing of electrically conducting transparent ink
In Fig. 1, the dark amplitude on trade mark page paper 7-1 is formed by electrically conductive ink printing, and the light amplitude on trade mark page paper 7-1 is formed by dielectric ink printing,
The amplitude being printed on trade mark page paper 7-1 is divided into 15 rows 10 on trade mark paper and arranged, amplitude 6-1 to 6-150 is neat arranged in arrays on trade mark page paper 7-1, i is allowed to take 1 to 15, j is allowed to take 1 to 10, j-th strip column scan line on trade mark page paper 7-1 is electrically connected with the basal surface of each amplitude of the jth row on trade mark page paper 7-1, i-th horizontal scanning line on trade mark page paper 7-1 is electrically connected with the upper surface of each amplitude of the i-th row on trade mark page paper 7-1
When the binary system encryption anti-fake information for needing to store the trade mark page is read, the 1st article of horizontal scanning line on trade mark page paper 7-1 is set to high level successively to the 15th article of horizontal scanning line,
When the 1st article of horizontal scanning line 1-1 on trade mark page paper 7-1 is set to high level, the binary system encryption anti-fake information of the 1st row storage on trade mark page paper 7-1 is with 0, 1 code form is exported from the 1st bar of column scan line to the 10th bar of column scan line, the 1st row on trade mark page paper 7-1 exports binary message 1 by electrically conductive ink printing into amplitude, the 1st row on trade mark page paper 7-1 exports binary message 0 by dielectric ink printing into amplitude, therefore the binary system encryption anti-fake information 1100001000 that the 1st row is read, above-mentioned readout is repeated to other rows on trade mark page paper 7-1.
In loading anti-counterfeiting information flow chart 3, original anti-counterfeiting information（Image, word）It is digitized into processing, the binary system anti-counterfeiting information table of 8 one group of generation, 8 one group of binary messages in binary system anti-counterfeiting information table are expanded into 32 one group of binary messages, generate high 24 be all 0 32 one group of binary system anti-counterfeiting information tables, i-th group of 32 binary message in 32 one group of binary system anti-counterfeiting information tables are denoted as, i is the positive integer more than 0, from first 32 binary system encryption anti-fake information in 32 one group of binary system anti-counterfeiting information tablesStart, to each 32 binary system anti-counterfeiting information in 32 one group of binary system anti-counterfeiting information tables
Figure 936623DEST_PATH_IMAGE001
Carry out ternary circulation cryptographic calculation, generation 32 one group of binary system encryption anti-fake information tables corresponding with 32 one group of binary system anti-counterfeiting information tables, processing is digitized to amplitude in label printing, amplitude is set to two kinds, the amplitude wherein printed by dielectric ink is defined as numeral 0, the amplitude printed by electrically conductive ink is defined as numeral 1, modulate the printing process of the amplitude on the trade mark page by circulating look-up table using 32 one group of binary system encryption anti-fake information of generation during label printing, the regular electric conductivity according to above two amplitude of amplitude on the trade mark page is changed by selecting dielectric ink and electrically conductive ink to print amplitude, adjacent 32 amplitudes constitute one group of 32 binary message on the trade mark page after modulation, so that carrying anti-counterfeiting information by the change of amplitude electric conductivity on the trade mark page, and the anti-counterfeiting information is embedded in whole trade mark page site, realize that trademark anti-counterfeit prints, pass through non-obvious the embedded extractible anti-counterfeiting information in the trade mark page, realize trademark anti-counterfeit.
In anti-counterfeiting information flow chart 4 is extracted, when extracting anti-counterfeiting information, the electric conductivity signal of trade mark page halftone dot image is gathered first, by the electric conductivity identification to amplitude, differentiate the electric conductivity of amplitude, extract the electric conductivity information of amplitude, demodulate the electric conductivity information of trade mark page amplitude, the binary modulated signal of 32 one group of output, channel decoding is carried out to 32 one group of binary modulated signal of demodulation output, generation binary system decryption anti-counterfeiting information table after channel decoding.
The binary system generated after decoding is decrypted into 32 binary message M in anti-counterfeiting information tableiPosition control variable i initial value design be i=1, initial value when setting the initial value of encryption parameter as encryption, initial value when setting the initial value of encryption variables as encryption, it is k=0 that binary operator, which controls variable k initial value design, first M from the binary system decryption anti-counterfeiting information table of generation1Start, each 32 binary message M in anti-counterfeiting information table are decrypted to binary systemiComputing is decrypted, binary system anti-counterfeiting information is solved
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, generate high 24 be all 0 32 one group of binary system anti-counterfeiting information tables, remove high 24, recover 8 one group of binary system anti-counterfeiting information table of generation, recover anti-counterfeiting signal and simultaneously export anti-counterfeiting information.

Claims (1)

1. a kind of generate binary modulated signal by anti-counterfeiting information by cryptographic calculation and channel coding, and the multivariate multi-parameter gradient ternary being embedded in anti-counterfeiting information in full page by circulating tabling look-up modulation mode circulates anti-fake information storage trademark,It is characterized in that：Anti-counterfeiting information stores trade mark, it is made up of trade mark page paper, the amplitude being printed on trade mark page paper, the horizontal scanning line being printed on trade mark page paper, the column scan line being printed on trade mark page paper, according to the binary system encryption anti-fake information of storage, a part of amplitude on trade mark page paper is formed by electrically conductive ink printing, another part amplitude on trade mark page paper is formed by dielectric ink printing, horizontal scanning line and column scan line on trade mark page paper are formed by the printing of electrically conducting transparent ink
In order to which the encryption for realizing trademark anti-counterfeit information is stored, processing is digitized to image false-proof information and character anti-counterfeiting information first, utilize image false-proof information and the binary system anti-counterfeiting information table of 8 one group of character anti-counterfeiting information generation, to prevent from producing information spillover in ciphering process, each 8 one group of binary system anti-counterfeiting information in binary system anti-counterfeiting information table are expanded into 32 one group of binary system anti-counterfeiting information, generate high 24 be all 0 32 one group of binary system anti-counterfeiting information tables, i-th group of 32 binary system anti-counterfeiting information in 32 one group of binary system anti-counterfeiting information tables are denoted as
Figure 205542DEST_PATH_IMAGE001
, i-th group of 32 binary system encryption anti-fake information in 32 one group of binary system encryption anti-fake information tables are denoted as Hi, i is the positive integer more than 0, and binary system encryption parameter is denoted as respectively
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、
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、
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、
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、、、
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With
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, encryption parameter
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、
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、
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、
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、
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、
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、
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With
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For 0 to 256 binary system positive integer, binary system encryption variables are denoted as j, d, e, f, g, h, r, p and q respectively, encryption variables j, d, e, f, g, h, r, p and q are 0 to 256 binary system positive integer, binary operator control variable is denoted as k, binary operator controls the binary system positive integer that variable k is 0≤k≤7, operator
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Using+,-, ×, four kinds of operators, binary operator control variable k=0 when
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Be respectively defined as-,+, × ,+, × ,-, × ,+, during binary operator control variable k=1
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Be respectively defined as+, × ,+,+,-, × ,+, ×, during binary operator control variable k=2
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Be respectively defined as-, × ,+,+, × ,-,+,-, during binary operator control variable k=3
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Be respectively defined as-, × ,+,-, × ,-,+, ×, during binary operator control variable k=4
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Be respectively defined as+, × ,-, × ,+,-,+, ×, during binary operator control variable k=5
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Be respectively defined as × ,+, × ,-,+,+,-, ×, during binary operator control variable k=6
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Be respectively defined as × ,+,+,-, × ,+,+, ×, during binary operator control variable k=7
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Be respectively defined as+, ×, × ,-,+,-,-, ×, ternary circulation cryptographic calculation is defined as H during binary operator control variable k=0i=
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, ternary circulation cryptographic calculation is defined as H during binary operator control variable k=1i= 
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, ternary circulation cryptographic calculation is defined as H during binary operator control variable k=2i=
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, ternary circulation cryptographic calculation is defined as H during binary operator control variable k=3i=
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, ternary circulation cryptographic calculation is defined as H during binary operator control variable k=4i=
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, ternary circulation cryptographic calculation is defined as H during binary operator control variable k=5i=
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, ternary circulation cryptographic calculation is defined as H during binary operator control variable k=6i=
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, ternary circulation cryptographic calculation is defined as H during binary operator control variable k=7i=
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, set encryption parameter
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、
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、
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、
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、
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、
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、
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WithInitial value, setting encryption variables j, d, e, f, g, h, r, p and q initial value set initial value that binary operator controls variable k as k=0, sets 32 binary system anti-counterfeiting information in 32 one group of binary system anti-counterfeiting information tables
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Position control variable i=1, setting 32 one group of binary system encryption anti-fake information tables in 32 binary system encryption anti-fake information HiPosition control variable i=1, it is right
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Carry out H1=
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Figure 658525DEST_PATH_IMAGE014
Figure 458991DEST_PATH_IMAGE019
Figure 559988DEST_PATH_IMAGE019
Figure 642531DEST_PATH_IMAGE019
Figure 520357DEST_PATH_IMAGE017
Figure 136146DEST_PATH_IMAGE019
Ternary circulation cryptographic calculation（Wherein k=0）, generate first binary system encryption anti-fake information H in 32 one group of binary system encryption anti-fake information table1, it is right
Figure 288779DEST_PATH_IMAGE034
Carry out H1=
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Figure 987930DEST_PATH_IMAGE010
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Figure 777167DEST_PATH_IMAGE011
Figure 406731DEST_PATH_IMAGE035
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Figure 690951DEST_PATH_IMAGE016
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Figure 285246DEST_PATH_IMAGE019
I+1, q+1, j+1, d+1, e+1, f+1, g+1, h+1, r+1, p+1 and k+1 computing are carried out while ternary circulation cryptographic calculation, next ternary circulation cryptographic calculation is pointed to H2=
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（Wherein k=1）, generate second binary system encryption anti-fake information H in 32 one group of binary system encryption anti-fake information table2, it is right
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Carry out H2=
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I+1, q+1, j+1, d+1, e+1, f+1, g+1, h+1, r+1, p+1 and k+1 computing are carried out while ternary circulation cryptographic calculation, next ternary circulation cryptographic calculation is pointed to H3=
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（Wherein k=2）, generate the 3rd binary system encryption anti-fake information H in 32 one group of binary system encryption anti-fake information table3, this ternary circulation cryptographic calculation goes on until last 32 binary system anti-counterfeiting information in binary system anti-counterfeiting information table always, by each 32 binary system anti-counterfeiting information in 32 one group of binary system anti-counterfeiting information tablesCarry out ternary circulation cryptographic calculation, generation 32 one group of binary system encryption anti-fake information tables corresponding with 32 one group of binary system anti-counterfeiting information tables, processing is digitized to amplitude in label printing, amplitude is set to two kinds, the amplitude wherein printed by dielectric ink is defined as numeral 0, the amplitude printed by electrically conductive ink is defined as numeral 1, modulate the printing process of the amplitude on the trade mark page by circulating look-up table using 32 one group of binary system encryption anti-fake information of generation during label printing, the regular electric conductivity according to above two amplitude of amplitude on the trade mark page is changed by selecting dielectric ink and electrically conductive ink to print amplitude, adjacent 32 amplitudes constitute one group of 32 binary message on the trade mark page after modulation, so that carrying anti-counterfeiting information by the change of amplitude electric conductivity on the trade mark page, and the anti-counterfeiting information is embedded in whole trade mark page site, realize trademark anti-counterfeit.
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