CN102945413A - Single-variable and double-progressive encryption type binary anti-counterfeit printing method - Google Patents

Single-variable and double-progressive encryption type binary anti-counterfeit printing method Download PDF

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CN102945413A
CN102945413A CN2012104018931A CN201210401893A CN102945413A CN 102945413 A CN102945413 A CN 102945413A CN 2012104018931 A CN2012104018931 A CN 2012104018931A CN 201210401893 A CN201210401893 A CN 201210401893A CN 102945413 A CN102945413 A CN 102945413A
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binary
group
counterfeiting information
operator control
control variables
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CN102945413B (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

The invention provides a single-variable and double-progressive encryption type binary anti-counterfeit printing method; according to the method, through [+++] encryption operation and channel coding, binary anti-counterfeit information can generate a binary modulating signal; and the orderly change of the anti-counterfeit information in the form of an amplitude modulation dot is embedded into the whole page through a circulating table lookup method; the anti-counterfeit information can be identified from any fragment during identifying a printing material; and the single-variable and double-progressive encryption type binary anti-counterfeit printing method provided by the invention can be widely applied to the anti-counterfeit field of the printing materials.

Description

Double the going forward one by one of single argument encrypted the scale-of-two antiforging printing method
affiliated technical field:
The present invention relates to a kind of anti-counterfeiting printing technology, particularly double the going forward one by one of a kind of single argument encrypted the scale-of-two anti-counterfeiting printing technology, and what this anti-counterfeiting printing technology can be for various printed matters is false proof.
background technology:
Existing comparatively common method for anti-counterfeit has following several: the first is laser anti-false sign, the symbol of product or special identification icon are printed to the anti-fake label of product by the recessive printing ink daylight fluorescence ink of laser printing technology, and the same class product is used the same labeling, because anti-fake label is easier to forge, and the anti-fake label of forging is used on 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 adopted is that every product is compiled one group of number, the coding of every product is not identical, this number is printed on labeling and hides, this number is deposited in the Computer Database that can inquire about for the consumer simultaneously, when the consumer buys product, number on sign is compared to identification by phone or networking computer input Computer Database, identical being very, difference is vacation, method is simple, identification easily, be difficult for forging, but in actual the use, because coded data is the rear labeling of printing of the unified generation of computing machine.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 more difficult forgery, but due to a serial number of bidding subsides, 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 by the sequence number on labeling and inquiry have or not phenomenon to plagiarize after by this feature, forge in batches.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 existed 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 full page by the change of the shape of amplitude, can when identifying, printed matter identify anti-counterfeiting information from any one fragment, therefore there is 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 the binary system anti-counterfeiting information table of 8 group, for preventing from ciphering process producing information spillover, 8 one group of binary messages in binary system anti-counterfeiting information table are expanded to 16 one group of binary messages, the generation most-significant byte is 0 16 one group binary system anti-counterfeiting information table entirely, 16 binary messages of i in 16 one group binary system anti-counterfeiting information table group are denoted as to N i, i is greater than 0 positive integer, and the eight-digit binary number encryption parameter is denoted as C, the positive integer that encryption parameter C is 0<=C<=256, two binary operator control variables are denoted as k, the positive integer that operator control variables k is 0<=k<=3, operator
Figure 636360DEST_PATH_IMAGE001
adopt+,-, *, tetra-kinds of operators of ÷, during operator control variables k=0
Figure 676167DEST_PATH_IMAGE001
be defined as respectively+, * ,-, ÷ ,+, ÷ ,+, *, during operator control variables k=1
Figure 199552DEST_PATH_IMAGE001
be defined as respectively+, ÷ ,-, * ,+, ÷ ,-, *, during operator control variables k=2 be defined as respectively-, ÷ ,+, * ,+, ÷ ,+, *, during operator control variables k=3
Figure 667760DEST_PATH_IMAGE001
be defined as respectively+, * ,+, ÷ ,-, ÷ ,+, *, during operator control variables k=0 cryptographic calculation be defined as [
Figure 21512DEST_PATH_IMAGE002
+
Figure 727300DEST_PATH_IMAGE003
+ +
Figure 102972DEST_PATH_IMAGE005
], during operator control variables k=1 cryptographic calculation be defined as [
Figure 181787DEST_PATH_IMAGE006
+
Figure 742081DEST_PATH_IMAGE007
+
Figure 248149DEST_PATH_IMAGE004
+
Figure 277416DEST_PATH_IMAGE005
], during operator control variables k=2 cryptographic calculation be defined as [
Figure 222238DEST_PATH_IMAGE006
+
Figure 574722DEST_PATH_IMAGE003
+
Figure 831784DEST_PATH_IMAGE008
+
Figure 269719DEST_PATH_IMAGE005
], during operator control variables k=3 cryptographic calculation be defined as [ +
Figure 38272DEST_PATH_IMAGE003
+
Figure 886142DEST_PATH_IMAGE004
+ ], the initial value of setting encryption parameter C, the initial value k=0 of setting operator control variables k, set 16 binary message N in 16 one group binary system anti-counterfeiting information table iPosition Control variable i=1, first 16 binary message N from 16 one group binary system anti-counterfeiting information table 1start, to each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 97998DEST_PATH_IMAGE002
+
Figure 736658DEST_PATH_IMAGE003
+
Figure 21009DEST_PATH_IMAGE004
+
Figure 495853DEST_PATH_IMAGE005
] cryptographic calculation, and each 16 binary message is carried out [
Figure 71322DEST_PATH_IMAGE002
+
Figure 252904DEST_PATH_IMAGE003
+
Figure 770473DEST_PATH_IMAGE004
+
Figure 670296DEST_PATH_IMAGE005
] carry out i+1 and k+1 computing when cryptographic calculation, make next computing point to [ + +
Figure 275480DEST_PATH_IMAGE004
+
Figure 475649DEST_PATH_IMAGE005
] wherein i and k all increased by 1, by each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 579871DEST_PATH_IMAGE002
+
Figure 798363DEST_PATH_IMAGE003
+
Figure 595417DEST_PATH_IMAGE004
+
Figure 515838DEST_PATH_IMAGE005
] cryptographic calculation, generating the binary add tight defense fake information table of 16 group, the shape of amplitude is set to two kinds:
Figure 689330DEST_PATH_IMAGE010
with
Figure 762328DEST_PATH_IMAGE011
, wherein
Figure 543334DEST_PATH_IMAGE010
be defined as the numeral 0,
Figure 639466DEST_PATH_IMAGE011
be defined as numeral 1, utilize the binary add tight defense fake information of 16 group generated by circulation look-up table modulation amplitude, make the shape of amplitude in its regular hybrid screening of the alteration of form according to above-mentioned two kinds of amplitudes, 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, 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.Obvious embed extractible anti-counterfeiting information by non-in printed matter, can provide valid certificates for genuine piece, there is stronger anti-forgery ability simultaneously, and do not increase extra false proof cost.
For solving above-mentioned technical matters, at first anti-counterfeiting information is carried out to digitizing, generate the scale-of-two anti-counterfeiting information table of 8 group, anti-counterfeiting information can be image information, Word message, trademark information etc., 8 one group of binary messages in 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 one group scale-of-two anti-counterfeiting information table are carried out
[
Figure 147807DEST_PATH_IMAGE002
+ +
Figure 731946DEST_PATH_IMAGE004
+
Figure 377691DEST_PATH_IMAGE005
] cryptographic calculation, generate the binary add tight defense fake information table of 16 group, utilize 16 binary messages process chnnel codings in 16 the one group binary add tight defense fake information table generated, generate the binary modulated signal of 16 group 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, and image signal is processed (RIP) through rasterizing and hybrid screening is exported 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 circulation look-up table modulation system modulation hybrid screening picture signals, the shape that makes amplitude according to with
Figure 425729DEST_PATH_IMAGE011
regular changing, make adjacent 16 amplitudes in the hybrid screening picture signal carry 16 scale-of-two anti-counterfeiting information by the change of shape, thereby be 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, through the fuzzy diagnosis of the shape to amplitude, differentiate the shape of amplitude, extract edge signal and the shape information of amplitude, the shape information of demodulation amplitude, export the binary modulated signal of 16 group.The binary modulated signal of 16 one group to demodulation output carries out channel-decoding, generates the scale-of-two deciphering anti-counterfeiting information table of 16 group after channel-decoding, and 16 binary messages that scale-of-two is deciphered in the anti-counterfeiting information table are denoted as H i, it is known by ciphering process,
H during operator control variable k=0 i=[
Figure 735488DEST_PATH_IMAGE002
+
Figure 868529DEST_PATH_IMAGE003
+
Figure 921936DEST_PATH_IMAGE004
+
Figure 73300DEST_PATH_IMAGE005
],
H during operator control variable k=1 i=[
Figure 616277DEST_PATH_IMAGE006
+
Figure 908718DEST_PATH_IMAGE007
+
Figure 578865DEST_PATH_IMAGE004
+
Figure 273152DEST_PATH_IMAGE005
],
H during operator control variable k=2 i=[ +
Figure 358579DEST_PATH_IMAGE003
+ +
Figure 364898DEST_PATH_IMAGE005
],
H during operator control variable k=3 i=[
Figure 452940DEST_PATH_IMAGE006
+ +
Figure 528660DEST_PATH_IMAGE004
+
Figure 197539DEST_PATH_IMAGE009
], 16 binary message H in scale-of-two deciphering anti-counterfeiting information table iposition control variable initial value design be i=1, first H from scale-of-two deciphering anti-counterfeiting information table 1start, each 16 binary message in scale-of-two deciphering anti-counterfeiting information table are carried out to H i=[
Figure 768067DEST_PATH_IMAGE002
+
Figure 319134DEST_PATH_IMAGE003
+
Figure 321725DEST_PATH_IMAGE004
+ ] decrypt operation, solve scale-of-two anti-counterfeiting information N i, the generation most-significant byte is 0 16 one group scale-of-two anti-counterfeiting information table entirely, removes most-significant byte, generates the scale-of-two anti-counterfeiting information table of 8 group, recovers anti-counterfeiting signal and also exports anti-counterfeiting information.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 loads the anti-counterfeiting information process flow diagram, and encryption flow figure as shown in Figure 1.
Fig. 2 extracts the anti-counterfeiting information process flow diagram, and the demodulation process flow diagram as shown in Figure 2.
embodiment
In loading anti-counterfeiting information flow chart 1, original anti-counterfeiting information (image, word, trade mark) is through digitized processing, generate the binary system anti-counterfeiting information table of 8 group, 8 one group of binary messages in binary system anti-counterfeiting information table are expanded to 16 one group of binary messages, generate most-significant byte and be entirely 0 16 one group binary system anti-counterfeiting information table, 16 binary messages of i group in 16 one group binary system anti-counterfeiting information table are denoted as N i, i is greater than 0 positive integer, and the eight-digit binary number encryption parameter is denoted as C, the positive integer that encryption parameter C is 0<=C<=256, two binary operator control variables are denoted as k, the positive integer that operator control variables k is 0<=k<=3, operator
Figure 884741DEST_PATH_IMAGE001
Adopt+,-, *, tetra-kinds of operators of ÷, during operator control variables k=0
Figure 126367DEST_PATH_IMAGE001
Be defined as respectively+, * ,-, ÷ ,+, ÷ ,+, *, during operator control variables k=1 Be defined as respectively+, ÷ ,-, * ,+, ÷ ,-, *, during operator control variables k=2
Figure 359475DEST_PATH_IMAGE001
Be defined as respectively-, ÷ ,+, * ,+, ÷ ,+, *, during operator control variables k=3
Figure 22538DEST_PATH_IMAGE001
Be defined as respectively+, * ,+, ÷ ,-, ÷ ,+, *, during operator control variables k=0 cryptographic calculation be defined as [
Figure 298930DEST_PATH_IMAGE002
+
Figure 643323DEST_PATH_IMAGE003
+
Figure 203618DEST_PATH_IMAGE004
+
Figure 709685DEST_PATH_IMAGE005
], during operator control variables k=1 cryptographic calculation be defined as [
Figure 237487DEST_PATH_IMAGE006
+
Figure 182310DEST_PATH_IMAGE007
+
Figure 534794DEST_PATH_IMAGE004
+
Figure 24812DEST_PATH_IMAGE005
], during operator control variables k=2 cryptographic calculation be defined as [
Figure 462746DEST_PATH_IMAGE006
+
Figure 211260DEST_PATH_IMAGE003
+
Figure 732764DEST_PATH_IMAGE008
+
Figure 846214DEST_PATH_IMAGE005
], during operator control variables k=3 cryptographic calculation be defined as [ +
Figure 58069DEST_PATH_IMAGE003
+
Figure 198195DEST_PATH_IMAGE004
+
Figure 544862DEST_PATH_IMAGE009
], the initial value of setting encryption parameter C, the initial value k=0 of setting operator control variables k, set 16 binary message N in 16 one group binary system anti-counterfeiting information table iPosition Control variable i=1, first 16 binary message N from 16 one group binary system anti-counterfeiting information table 1Start, to each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 691810DEST_PATH_IMAGE002
+ + +
Figure 730545DEST_PATH_IMAGE005
] cryptographic calculation, and each 16 binary message is carried out [
Figure 443417DEST_PATH_IMAGE002
+
Figure 9528DEST_PATH_IMAGE003
+ +
Figure 48601DEST_PATH_IMAGE005
] carry out i+1 and k+1 computing when cryptographic calculation, make next computing point to [
Figure 232458DEST_PATH_IMAGE006
+
Figure 602259DEST_PATH_IMAGE007
+
Figure 571484DEST_PATH_IMAGE004
+ ] wherein i and k all increased by 1, by each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 351276DEST_PATH_IMAGE002
+
Figure 134555DEST_PATH_IMAGE003
+
Figure 207553DEST_PATH_IMAGE004
+
Figure 478305DEST_PATH_IMAGE005
] cryptographic calculation, generating the binary add tight defense fake information table of 16 group, the shape of amplitude is set to two kinds:
Figure 636753DEST_PATH_IMAGE010
With
Figure 161407DEST_PATH_IMAGE011
, wherein
Figure 354491DEST_PATH_IMAGE010
Be defined as the numeral 0,
Figure 493348DEST_PATH_IMAGE011
Be defined as numeral 1,16 binary add tight defense fake informations 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.Original continuous is changed the line map, and image signal is processed (RIP) through rasterizing and hybrid screening is exported shadow tone hybrid screening picture signal, comprising amplitude and FM screened image signal.Utilize the binary modulated signal generated to adopt the modulation system of tabling look-up that circulates, the shape of amplitude in modulation hybrid screening picture signal, make in hybrid screening that the shape of amplitude is regular to change, 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, when extracting anti-counterfeiting information, at first gather the halftone dot image signal, fuzzy diagnosis through the shape to amplitude, differentiate the shape of amplitude, extract edge signal and the shape information of amplitude, the shape information of demodulation amplitude, export the binary modulated signal of 16 group.The binary modulated signal of 16 one group to demodulation output carries out channel-decoding, generates the scale-of-two deciphering anti-counterfeiting information table of 16 group after channel-decoding, and 16 binary messages that scale-of-two is deciphered in the anti-counterfeiting information table are denoted as H i, it is known by ciphering process,
H during operator control variable k=0 i=[
Figure 122781DEST_PATH_IMAGE002
+ +
Figure 685667DEST_PATH_IMAGE004
+ ],
H during operator control variable k=1 i=[
Figure 613620DEST_PATH_IMAGE006
+
Figure 729343DEST_PATH_IMAGE007
+
Figure 569123DEST_PATH_IMAGE004
+
Figure 364297DEST_PATH_IMAGE005
],
H during operator control variable k=2 i=[
Figure 922318DEST_PATH_IMAGE006
+
Figure 576153DEST_PATH_IMAGE003
+
Figure 349068DEST_PATH_IMAGE008
+
Figure 629DEST_PATH_IMAGE005
],
H during operator control variable k=3 i=[
Figure 842683DEST_PATH_IMAGE006
+
Figure 237892DEST_PATH_IMAGE003
+ + ], 16 binary message H in scale-of-two deciphering anti-counterfeiting information table iposition control variable initial value design be i=1, first H from scale-of-two deciphering anti-counterfeiting information table 1start, each 16 binary message in scale-of-two deciphering anti-counterfeiting information table are carried out to H i=[
Figure 515662DEST_PATH_IMAGE002
+
Figure 527611DEST_PATH_IMAGE003
+
Figure 196490DEST_PATH_IMAGE004
+
Figure 252171DEST_PATH_IMAGE005
] decrypt operation, solve scale-of-two anti-counterfeiting information N i, the generation most-significant byte is 0 16 one group scale-of-two anti-counterfeiting information table entirely, removes most-significant byte, generates the scale-of-two anti-counterfeiting information table of 8 group, recovers anti-counterfeiting signal and also exports anti-counterfeiting information.
  

Claims (1)

1. one kind generates the binary modulated signal by anti-counterfeiting information by cryptographic calculation and chnnel coding, and encrypts the binary system antiforging printing method by circulation double the going forward one by one of single argument that modulation system is embedded in anti-counterfeiting information in full page of tabling look-up, It is characterized in that:Anti-counterfeiting information is carried out to digitlization, generate the binary system anti-counterfeiting information table of 8 group, anti-counterfeiting information is image information, Word message or trademark information, for preventing from ciphering process producing information spillover, 8 one group of binary messages in binary system anti-counterfeiting information table are expanded to 16 one group of binary messages, the generation most-significant byte is 0 16 one group binary system anti-counterfeiting information table entirely, and 16 binary messages of the group of the i in 16 one group binary system anti-counterfeiting information table are denoted as to N i, i is greater than 0 positive integer, and the eight-digit binary number encryption parameter is denoted as C, the positive integer that encryption parameter C is 0<=C<=256, two binary operator control variables are denoted as k, the positive integer that operator control variables k is 0<=k<=3, operator
Figure 381683DEST_PATH_IMAGE001
Adopt+,-, *, tetra-kinds of operators of ÷, during operator control variables k=0
Figure 446591DEST_PATH_IMAGE001
Be defined as respectively+, * ,-, ÷ ,+, ÷ ,+, *, during operator control variables k=1 Be defined as respectively+, ÷ ,-, * ,+, ÷ ,-, *, during operator control variables k=2
Figure 448756DEST_PATH_IMAGE001
Be defined as respectively-, ÷ ,+, * ,+, ÷ ,+, *, during operator control variables k=3 Be defined as respectively+, * ,+, ÷ ,-, ÷ ,+, *, during operator control variables k=0 cryptographic calculation be defined as [
Figure 2012104018931100001DEST_PATH_IMAGE002
+
Figure 106450DEST_PATH_IMAGE003
+ +
Figure 546659DEST_PATH_IMAGE005
], during operator control variables k=1 cryptographic calculation be defined as [
Figure 2012104018931100001DEST_PATH_IMAGE006
+
Figure 458989DEST_PATH_IMAGE007
+
Figure 984648DEST_PATH_IMAGE004
+
Figure 329042DEST_PATH_IMAGE005
], during operator control variables k=2 cryptographic calculation be defined as [
Figure 374489DEST_PATH_IMAGE006
+
Figure 208453DEST_PATH_IMAGE003
+
Figure 2012104018931100001DEST_PATH_IMAGE008
+
Figure 473606DEST_PATH_IMAGE005
], during operator control variables k=3 cryptographic calculation be defined as [
Figure 356111DEST_PATH_IMAGE006
+
Figure 770912DEST_PATH_IMAGE003
+ +
Figure 964444DEST_PATH_IMAGE009
], the initial value of setting encryption parameter C, the initial value k=0 of setting operator control variables k, set 16 binary message N in 16 one group binary system anti-counterfeiting information table iPosition Control variable i=1, first 16 binary message N from 16 one group binary system anti-counterfeiting information table 1Start, to each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 712957DEST_PATH_IMAGE002
+
Figure 919948DEST_PATH_IMAGE003
+
Figure 344982DEST_PATH_IMAGE004
+
Figure 270212DEST_PATH_IMAGE005
] cryptographic calculation, and each 16 binary message is carried out [
Figure 556837DEST_PATH_IMAGE002
+
Figure 696963DEST_PATH_IMAGE003
+
Figure 715734DEST_PATH_IMAGE004
+
Figure 190578DEST_PATH_IMAGE005
] carry out i+1 and k+1 computing when cryptographic calculation, make next computing point to [
Figure 218577DEST_PATH_IMAGE006
+
Figure 726392DEST_PATH_IMAGE007
+
Figure 181644DEST_PATH_IMAGE004
+
Figure 878205DEST_PATH_IMAGE005
] wherein i and k all increased by 1, by each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 257365DEST_PATH_IMAGE002
+
Figure 559033DEST_PATH_IMAGE003
+
Figure 247503DEST_PATH_IMAGE004
+
Figure 369043DEST_PATH_IMAGE005
] cryptographic calculation, generating the binary add tight defense fake information table of 16 group, the shape of amplitude is set to two kinds:
Figure 2012104018931100001DEST_PATH_IMAGE010
With
Figure 112746DEST_PATH_IMAGE011
, wherein
Figure 268921DEST_PATH_IMAGE010
Be defined as the numeral 0,
Figure 879025DEST_PATH_IMAGE011
Be defined as numeral 1, utilize the binary add tight defense fake information of 16 group generated 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, and image signal is processed (RIP) through rasterizing and hybrid screening is exported halftoning 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 circulation look-up table modulation system modulation hybrid screening picture signals, the shape that makes amplitude according to
Figure 487861DEST_PATH_IMAGE010
With
Figure 458091DEST_PATH_IMAGE011
Regular changing, make adjacent 16 amplitudes in the hybrid screening picture signal carry 16 binary add tight defense fake informations by the change of shape, thereby be created on the hybrid screening picture signal that embeds anti-counterfeiting information in the full page site, realize anti-counterfeit printing.
CN201210401893.1A 2012-10-22 2012-10-22 Single-variable and double-progressive encryption type binary anti-counterfeit printing method Expired - Fee Related CN102945413B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8023160B2 (en) * 2008-09-10 2011-09-20 Xerox Corporation Encoding message data in a cover contone image via halftone dot orientation
CN102194137A (en) * 2011-04-25 2011-09-21 北京印刷学院 Multi-dimensional encryption anti-counterfeiting printing technology based on shape of amplitude modified screen
CN102225671A (en) * 2011-04-14 2011-10-26 北京印刷学院 Encrypted anti-counterfeit printing technology for modulating shape of printed matter amplitude-modulation screen dot by dual-encrypted signal
CN102306262A (en) * 2011-08-31 2012-01-04 深圳芯智汇科技有限公司 Data encryption method and data encryption system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8023160B2 (en) * 2008-09-10 2011-09-20 Xerox Corporation Encoding message data in a cover contone image via halftone dot orientation
CN102225671A (en) * 2011-04-14 2011-10-26 北京印刷学院 Encrypted anti-counterfeit printing technology for modulating shape of printed matter amplitude-modulation screen dot by dual-encrypted signal
CN102194137A (en) * 2011-04-25 2011-09-21 北京印刷学院 Multi-dimensional encryption anti-counterfeiting printing technology based on shape of amplitude modified screen
CN102306262A (en) * 2011-08-31 2012-01-04 深圳芯智汇科技有限公司 Data encryption method and data encryption system

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