CN1430175A - Encryption antiforgery method based on substance characteristics - Google Patents
Encryption antiforgery method based on substance characteristics Download PDFInfo
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Abstract
An antiforge encryption method based on substance characteristics includes such steps as adding the shaped material to the paper in its making procedure to form random distributed texture structure, converting the texture structure to image information able to be processed by computer, picking up the characteristic information of image, editing its bar code, printing the bar code on the antiforge label or bill, digital signing with private key, and copying the digital signature onto the object to be protected, and checking the antiforge information.
Description
Technical field
The present invention relates to a kind of encryption antiforgery method, be based on the encryption antiforgery method of substance characteristics, be particularly related to a kind of method that the article tag that sets in advance the random grain structure or bill are carried out truth identification, by utilizing this random grain structure, and in conjunction with utilization image processing techniques and cryptographic algorithm technology, further form the digital signature of this material, be the anti-counterfeiting mark sign indicating number of article tag or bill, and the method by image feature information and anti-counterfeiting mark sign indicating number checking article label or papers.
Background technology
The importance of preventing pseudo problem of cracking down on counterfeit goods is self-evident, the investigation result of announcing according to the United Nations shows, the turnover of countries in the world fake products accounts for 5% of volume of world trade, the annual thus direct economic loss that causes to manufacturer of an established trade mark is just up to 1,380 hundred million dollars, say nothing of the fame image loss that causes to manufacturer even country, and the emotional distress that brings to consumers in general.In China, fake and forged phenomenon remains incessant after repeated prohibition, and many esbablished corporations are had to expend a huge sum of money and supported the huge false proof troop in nationwide.
In order to suppress, stop fake and forged phenomenon, country is except formulating legally the relevant policy, and the feasibility technology of the research effective recognition true and false also is considerable.From material anti-counterfeiting technology and the method that has adopted at present, be broadly divided into three classes: the first kind is popular anti-counterfeiting technology, for example in the safeguard protection body, adopt watermark, special ink, ultraviolet fluorescent material etc. to make fixed pattern as false proof sign, also has laser anti-fake figure mark etc., these anti-counterfeiting mark-images or symbol are can be for masses' Direct Recognition or by simple equipment with the naked eye, as identification with the naked eye after the UV-irradiation, false proof etc. as Renminbi; Second class is professional anti-counterfeiting technology, as one dimension or two dimensional bar code identification marking, needs to utilize the sensor and the relevant device of specialty to discern, and some professional anti-counterfeiting technology also needs more advanced and complicated professional equipment to discern; The 3rd class is utilize information network or information feedback method false proof, and is false proof as telephone code, and the consumer is known the true and false by dialing telephone number and the anti-counterfeiting mark sign indicating number that is documented on the safeguard protection body through inquiring false proof center.From the false proof practice of cracking down on counterfeit goods in recent years, above-mentioned anti-counterfeiting technology is used once releasing, and will be cracked in a short time by the fake producer and migrate, thereby can't fundamentally stop to copy.Though the anti-counterfeiting technology that has has effect preferably, because its technology itself must maintain secrecy, can not disclose, Authentication devices can not be arranged on any third party, even this third party is honest believable, thereby be unfavorable for popular Application in Anti-counterfeiting.
It is false proof to utilize encryption technology to carry out, as on bar code, hiding password, be called the technical scheme of " Electronic Password Formation And Verification Ways " with the applicant in the name of first to file, it is to bank money, as false proof the comprising of draft, cashier's cheque, check etc.: in the side of signing and issuing, cleartext information (as needing anti-tamper information on the bill) is encoded and it is made the coded message that hash (HASH) operation back forms little plaintext earlier, with private key the coded message of little plaintext is made enciphering transformation again and form electronic cipher; In veritification side, with PKI this electronic cipher is done the deciphering conversion and form intermediate result, adopt again and means that the side of signing and issuing is same change into the coded message of little plaintext with cleartext information,, think that then the checking result is correct if intermediate result is identical with the coded message of this little plaintext.Adopt this method for anti-counterfeit for preventing that distorting billing information can play goodish effect, but the true and false that will identify an identical fake bill then show slightly pale, promptly can not effectively discern the forgery and illegal imitation of brand-name products of clone's formula.
In sum, be badly in need of a kind of anti-counterfeiting technology of design at present with anti-duplicating (anti-clone), anti-tamper function, this anti-counterfeiting technology can be open to masses, allow masses know the method for authentication, the technical scheme that is its anti-counterfeiting technology is unclassified, do not exist secret in case leak, the matter that anti-counterfeiting technology just may be cracked is considered.
Summary of the invention
The objective of the invention is to design a kind of encryption antiforgery method, utilize the material-false proof article tag of this method making or anti-tamper, the anti-function of copying that bill has reinforcement, reach the purpose of distinguishing the material true and false really based on substance characteristics.
The technical scheme that realizes the object of the invention is such; a kind of encryption antiforgery method based on substance characteristics; be included on the safeguard protection body and form signing and issuing processing procedure and, it is characterized in that of anti-counterfeiting information the veritification processing procedure that the anti-counterfeiting information on the safeguard protection body is verified:
The processing procedure of signing and issuing of described formation anti-counterfeiting information further comprises:
A. add tangible material in the technological process of making the safeguard protection body, this tangible material forms the texture structure with the incorporate stochastic distribution of safeguard protection body on the safeguard protection body;
B. the texture structure with stochastic distribution is converted to and can is utilized image processing method to extract the characteristic information of image from image information by the image information of Computer Processing;
C. with the characteristic information that extracts and the anti-tamper information on the safeguard protection body as expressly, form digital signature through encryption;
D. this digital signature is produced on the safeguard protection body as the anti-counterfeiting mark sign indicating number;
The described veritification processing procedure that anti-counterfeiting information is verified further comprises:
E. the texture structure with stochastic distribution on the safeguard protection body is converted to and can is utilized image processing method to extract the characteristic information of image from image information by the image information of Computer Processing;
F. the digital signature on the safeguard protection body is reverted to the characteristic information that includes image and the plaintext of anti-tamper information through decryption processing;
G. the characteristic information of characteristic information that step e is obtained and step F acquisition relatively and with the anti-tamper information of step F acquisition and the anti-tamper information on the safeguard protection body compares, and judgement safeguard protection body is true when relatively more consistent.
In the described steps A, described tangible material is irregular fibrous or graininess, and the texture structure of the stochastic distribution that is made of this material has the characteristic that can be read or gather by external device.
Described tangible material is the material that can passively send light in one section frequency spectrum different in size, that thickness is uneven, color is different.
Safeguard protection body in the described steps A comprises storage of negotiable securities, bank money or the article tag of papery, and described tangible material is added in the paper pulp, forms the texture structure original image that is formed by tangible material stochastic distribution in the safeguard protection surface of papery.
Among the described step B, being to open an out-of-the-way texture structure image acquisition region on described safeguard protection body, is that texture structure original image with stochastic distribution in this zone is converted to can be by the image information of Computer Processing.
Also record positioning seat parameter and location concentric circles on the described texture structure image acquisition region by printing or mode of printing.
Among the described step B, the characteristic information of described extraction image comprises the image recognition allowable error of extracting more than one image feature amount and each characteristic quantity, is the bit information of the some represented with the numerical value mode.
Described step C, comprise that also image feature amount and the image recognition allowable error thereof that will extract are made into bar code printing on the bar code area of described safeguard protection body, maybe make bar code printing on the bar code area of described safeguard protection body with the anti-tamper information combination system on the image feature amount, image recognition allowable error and the safeguard protection body that extract; In the described step F, also comprise the bar code information of reading on the described bar code area; Among the described step G, be that the cleartext information that bar code information and step F obtain is compared.
Among the described step C, the cleartext information encryption is become digital signature, further comprises:
C1. cleartext information is converted to coded message expressly;
C2. coded message is expressly asked the hash operation of summary, formed Xiao Ming's literary composition coded message;
C3. by the signature computing Xiao Ming's literary composition coded message is made enciphering transformation with private key and form digital signature with electronic cipher feature;
In the described step F, the digital signature decryption processing is become expressly, by the checking computing digital signature is done the deciphering conversion with PKI and form.
Among the described step D, be to utilize printing or mode of printing that the anti-counterfeiting mark sign indicating number is recorded in the numerical ciphers district of safeguard protection body.
A kind of encryption antiforgery method of the present invention based on substance characteristics; it is a kind of anti-counterfeiting technology of coming the recognition material true and false by identification safeguard protection body; this safeguard protection body can be the bank money consistent with material, storage of negotiable securities etc.; it also can be the label that is attached on material-commodity; anti-tamper information can be the amount of money on the bill, also can be Item Title, batch number, sequence number, the date of production etc.Method of the present invention; on the safeguard protection body, form the texture structure of stochastic distribution earlier; again the random image that is formed by this texture structure is done to extract the operation of characteristic quantity; " complicated chance phenomenon is difficult to repetition and artificial control " make owing to the characteristic quantity that extracts is based on, thereby extremely difficulty is duplicated.
At first, in the manufacturing process of article tag or the used paper of bill, in paper pulp, add certain special fiber or particulate material at random, constitute texture structure image at random, the material that is added should make it after being subjected to certain extraneous excitation, can read or collect the image of this random grain structure by certain equipment, the wire rod that has fluorescent characteristics as use, it is the material that can passively send light in certain section frequency spectrum, be converted to the image information that to use Computer Processing through the photoelectric conversion device collection, can be on article tag or bill out-of-the-wayly separately go out a texture structure image acquisition region, guarantee that the side of signing and issuing and authentication operate same sample region; Then, utilize the characteristic information of image processing method extraction image, i.e. the bit information of a location number; Again to these bit informations, and the information that not hope is distorted on bill or the label, comprise literal, symbol, numeric string etc., utilize private key to carry out encryption as cleartext information together, form digital signature, the printing or be printed in the digital signature district of bill or label, this digital signature is as the anti-counterfeiting mark sign indicating number of this bill or label.In addition, also the characteristic information and the image recognition allowable error of image can be made into bar code, print or be printed on bill or the label, thereby on bill or label, form triple false proof districts, i.e. texture structure image acquisition areas, bar code area and digital signature district.
By method of the present invention, to set up the anti-counterfeiting characteristic relevant between the specific character on particular texture feature, label or the bill of anti-counterfeiting mark sign indicating number and label or bill, symbol, numeric string etc. and digital signature three, reach effectively the effect that prevents that bill or label are replicated, quilt is distorted with cryptographic technique.
Method of the present invention is utilized the random grain structural anti false, and completely different fixed pattern in traditional anti-counterfeiting technology is false proof, because the generation of texture structure is a completely random on each safeguard protection body, thereby causes very big forgery difficulty to the fake producer; Utilize sensor acquisition and image-recognizing method to extract the characteristic information of random grain image, owing to can have manyly for the characteristic information that extracts, its selection result is that various meticulous means of duplicating institute is irrealizable; The encryption technology that utilization contains private key prevents to forge and distort, the difficulty of capturing cryptographic algorithm because of the fake producer is quite big, thereby to forge this anti-counterfeiting mark sign indicating number also be unusual difficulty.Generally speaking, because random character is not subjected to artificial control, is difficult to duplicate, therefore false proof thought of the present invention can disclose, and is beneficial to popular false proof.
Method of the present invention; a kind of method that forms random grain structure on the safeguard protection body is provided; this random grain structure is by in the paper manufacture process of article tag or bill; add at random in paper pulp that all different certain material of certain size, shape or color forms, the quantity of this material in article tag or bill, shape, size, color etc. have the advantages that completely random distributes.
Method of the present invention, a kind of method of being convenient to this random grain structure of Computer Processing is provided, because the material that is added has specific optical signature, as has a fluorescent characteristics, when certain excitation that is come from the outside, after the irradiation as light, the specific image that forms by the random grain structure, can be collected by photoelectric conversion device, the image of this collection can utilize computing machine to handle.
Method of the present invention utilizes image-recognizing method to extract the characteristic information of image, promptly obtains the bit information of a location number.
Method of the present invention; to wish on characteristic information, image recognition allowable error and the article tag or the bill of image that the literal, symbol, numeric string etc. of protection are as plaintext; be made into the bar code that is stated from article tag or the bill; and and then utilize private key it to be formed digital signature by cryptographic algorithm, this digital signature is as the anti-counterfeiting mark sign indicating number of this article tag or bill.
Method of the present invention provides a kind of in the method for also explaining the image recognition allowable error on article tag or the bill in the characteristic information of statement image, can strengthen the antinoise interference capability in the image processing process.
Description of drawings
Fig. 1 adopts the false proof bill of the inventive method making or the planar structure synoptic diagram of label;
Fig. 2 comprises Fig. 2 A and Fig. 2 B, is to adopt the formed two kinds of original texture structural images of the inventive method;
Fig. 3 comprises Fig. 3 A and Fig. 3 B, is the original texture structural images among Fig. 2 A and Fig. 2 B to be carried out edge extracting earlier remake the image that obtains after the binary conversion treatment;
Fig. 4 comprises Fig. 4 A and Fig. 4 B, is the original texture structural images among Fig. 2 A and Fig. 2 B to be made binary conversion treatment earlier carry out the image that obtains behind the edge extracting again.
Embodiment
Indication of the present invention false proof is meant the activity that prevents to distort, forge, duplicate etc.Described be difficult to duplicate be meant and under prior art, duplicate very difficulty, perhaps duplicate the income that movable cost itself brings far above replication.Described texture structure is meant in the manufacture process of safeguard protection body, in original material such as paper pulp, add certain material after, the physical arrangement and the characteristic of this material that shows on safeguard protection body finished product (paper product) surface.The anti-counterfeiting mark sign indicating number is meant the Serial No. that utilizes modes such as printing or printing to write down on article tag or bill.
In conjunction with referring to Fig. 1, encryption antiforgery method based on substance characteristics of the present invention is based on the principle of " complicated chance phenomenon is difficult to repetition and artificial control ", technology such as Flame Image Process and cryptographic algorithm have been fully utilized, a kind of texture structure of stochastic distribution and anti-counterfeiting mark sign indicating number that is associated with this texture structure of forming on article tag or bill is provided, utilize its inverse process, can verify whether this article tag or bill are distorted, copied, and then reach the purpose of distinguishing article or papers.
Among Fig. 1, the 1st, article tag or bank money, securities etc., the 11st, the texture structure image acquisition areas, printing or printing have the concentric circles and the positioning seat parameter of some location, the 12nd, bar code area, the 13rd, digital signature district, i.e. anti-counterfeiting mark sign indicating number district on this acquisition zone.Other literal, symbol, figure or numeral do not have in this texture structure image acquisition areas, bar code area and the anti-counterfeiting mark sign indicating number district.
Because not having usually in plain paper can be for the texture structure information of utilizing, so the present invention adopts the method for artificial interpolation to form this texture structure with randomness.The material that for this reason requires to add should have following characteristics:
(1) has certain intrinsic optical characteristics, as fluorescent characteristic, promptly under the exciting of this material light source in extraneous certain wave band, can send the light in another wave band or the same wave band, issued light can be arranged in visible light herein, also can be arranged in invisible light spectrum;
(2) in paper pulp, behind this material of interpolation, after paper technology forms finished paper, still can reflect the characteristic of this material in (1);
(3) this material has comparatively stable properties in finished paper, promptly can not pass and very fast variation or disappearance in time.
(4) shape of material, size, color etc. have difference.
Material with above characteristic is convenient to utilize photoelectric conversion device to obtain utilizing the image of Computer Processing, and this image has the advantages that otherness is big, degree of freedom is big and stable, and is convenient to Flame Image Process and identification.Material with above-mentioned characteristic is a lot, and as certain fluorescent fiber, material can send visible light originally as linear structure under the exciting of infrared light supply.And for example certain look conversion luminescent material excites the visible light that can send multiple color down at infrared light supply, and material itself also can be nutty structure not of uniform size, also can be processed into other shape.
In paper pulp, add described material, for example adopt the basic step of fluorescent fiber to be: the segment of fiber of fluorescent fiber being made the 1-3 centimeter length, input is in paper pulp, fully stir then, make segment of fiber be evenly distributed in the paper pulp as far as possible, the fluorescent fiber section is randomly dispersed in every paper full and uniformly, as what of segment of fiber quantity, crooked situation, mutual alignment relation etc. is a completely random, in addition, for the ease of follow-up texture structure image acquisition, the texture structure image acquisition region 11 that a rectangle can a certain appropriate location on label or bill be set, in addition, for the ease of in the image that collects, determining the relative position and the direction of image, on texture structure image acquisition region 11, setting circle is set, elements of a fix axle, this setting circle and positioning seat parameter can be recorded on the texture structure image acquisition region 11 by modes such as printing or printings.
According to the optical characteristics of adding material, adopt corresponding photoelectric conversion device to carry out the collection of texture structure, for example when add be fluorescent fiber the time, in specific environment with certain light intensity, can place article tag or bill as one, the box of infrared light supply and photoelectric conversion device, utilize the infrared light supply that can the fluorescence excitation fiber sends fluorescence of designated band, texture structure image acquisition region 11 on certain angle irradiating item with electron radiation label or the bill, fluorescent material inspires fluorescence, utilize band CCD or CMOS to pop one's head in, the scope of the light wave of gathering has comprised the photoelectric conversion device of fluorescence wave band, as CCD or CMOS scanner scanning texture structure image acquisition region 11, the image light signals of this pickup area is converted to e-file, form electronic image files, as the bitmap file of BMP form.Original image as shown in Fig. 2 A, Fig. 2 B, they have represented the resulting image after sampling by two different article tags or bill, wherein Bai Se lines are the fluorescent fiber section.
This image table that obtains from the random grain structure reveals very big degree of freedom, can extract a lot of characteristics of image, and these characteristics of image roughly are divided three classes:
The first kind is a general characteristic, as Hu invariant moments, the relative moment of presentation video shape facility, and the frequecy characteristic of the gray scale of presentation video textural characteristics-gradient co-occurrence matrix and presentation video frequency etc.;
Second class is an intermediate features, as after utilizing sampling ring that image is cut apart, by the structural information and the overall information (Hu invariant moments) of each loop section embodiment; The sample mean direction of expression directional data, average divergence, three angular moments etc.;
The 3rd class is a minutia, as after utilizing the matrix sampling, the shape on the arbitrary curve section of closed boundary, point, border, flex point, angle sequence, length of side sequence etc. in the parsing image.
Utilize the certain characteristics in the above-mentioned characteristics of image just can discern different images.Fig. 3 A and Fig. 3 B carry out direct edge extracting earlier to the original image among Fig. 2 A and Fig. 2 B to remake the image that obtains after the binary conversion treatment, and with the image comparison among Fig. 2 A and Fig. 2 B, the information of loss is less, can extract general characteristic easily from this figure.Fig. 4 A and Fig. 4 B make binary conversion treatment earlier to the original image among Fig. 2 A and Fig. 2 B to carry out the image that obtains behind the edge extracting again, the image among this figure and Fig. 2 A and Fig. 2 B relatively, the information of loss is more, but helps the extraction of shape facility.
The characteristic information of image is made up of a plurality of characteristics of image, and can show with the numerical value form, promptly is expressed as the bit information of some.The characteristic information of image has reflected that the article tag or the bill that adopt the inventive method have the feature of difference and other false proof product, because the texture structure that supplies on article tag or the bill to gather is that completely random forms, so have higher degree of freedom.For example, having added the article tag or the bill of described fluorescent fiber, is example with every square centimeter of segment of fiber of about 20 of distributing, and the degree of freedom of the image that is collected will be higher than fingerprint image.Therefore, the probability that extracts identical characteristic information from two article tags or bill is almost nil, that is to say, the texture structure of article tag or bill or the texture structure image that collects are unique features of this article tag or bill, and the texture structure that also promptly duplicates label is quite difficult.Just be based on this characteristic that is difficult to duplicate,, and can Authentication devices be set, using for popular fake certification believable third party so the anti-counterfeiting technology of the inventive method can disclose.
Utilize the modern encryption technology, digital signature is encrypted and obtained to the information such as characteristic information of image.Digital signature is based on that the identity identifying technology of rivest, shamir, adelman makes, in rivest, shamir, adelman, mainly contain two kinds of operations of checking computing (V computing) of adopting signature computing (S computing) that private key finishes and employing PKI to finish, wherein, utilize the sign signature result of computing of private key to be called digital signature, represented private key holder's signature, so require the secret private key of preserving of private key holder.And PKI only is used to verify computing, can disclose.Private key and PKI occur in pairs, use each PKI and by the checking computing, can verify the true and false of the digital signature that use corresponding private key and signature computing are done, and the formation of digital signature and checking principle are:
M=HASH (M) formula (1)
S=f1 (m, sk1) formula (2)
V=f2 (S, pk1) formula (3)
In the formula, M is called expressly, be original character and the numerical information that is used to make digital signature, this expressly is the image feature information of the texture structure of collection among the present invention, can also comprise the image recognition permissible error, can also increase the information that not hope is distorted on article tag or the bill, as trade name, batch number, sequence number, the amount of the instrument etc.M is called HASH expressly, is that M is carried out the numerical information that HASH (asking digest value) computing obtains; F1 is a signature function, and this argument of function is m and private key sk1, and functional value is digital signature S, represents with the form of numeral; F2 is the checking function, this argument of function be digital signature S and PKI pk1 (with private key sk1 be pair of secret keys), functional value is identifying code V, f1 and f2 inverse operation each other, if V equals m, then explanation checking result is correct; If V is not equal to m, authentication error is described then.
Digital signature is actually between plaintext M and digital signature result S and sets up the process that certain is got in touch, and the people that private key is only held in this contact can sign and issue out digital signature, and other people then can't sign and issue out digital signature.With the information of not wishing on article tag or the bill to be distorted also as content expressly, and make digital signature with article tag or bill owner's private key, printing or be printed in the digital signature district 13 is so this digital signature can be as the anti-counterfeiting identification code of article tag or bill.Because the fake producer does not have private key, even he can grasp the formation method of texture structure characteristics of image so, oneself generates an image, can not obtain correct digital signature, still can be identified by the checking computing.And for the owner of article tag or bill, he holds the private key of signature and the PKI of checking usefulness, so can certifying digital signature, simultaneously, article tag or bill owner also can license to the checking PKI of usefulness and required algorithm believable third-party authentication mechanism, though, can not sign and issue out digital signature because this third-party authentication mechanism can certifying digital signature.
Carry out image acquisition according to the image texture structure, Flame Image Process, in the process of extracting image feature information, owing to add changes in material properties, the error of photoelectric conversion device, reasons such as the image processing software error of calculation bring error can for the extraction image feature information, veritification side is identified as counterfeit with real article tag or bill possibly, for fear of this thing happens, need provide certain error permissible range to this species diversity, it is the image recognition allowable error, the size of this error provides after will taking all factors into consideration above-mentioned factor, if the error design is too small, real article tag or bill may be identified as the personation thing; If the error design is excessive, the article tag or the bill of personation may be identified as true product again.The design of this error also will be considered the difference that different application requires except considering above-mentioned factor, for example, in bank's a large sum of money bill anti-counterfeit is used, for the true and false of strictness checking bill, wish the error range that design is less.Therefore, the identification error allowable value can not be fixed in the methods of the invention, must change along with the difference of using.
For this reason, the present invention is a design bar code area (bar code of one dimension or bidimensional) on the appropriate location of article tag or bill also, be used to write down each characteristic information and identification allowable error thereof, promptly, to discern allowable error information, the characteristic information of the texture structure image that extracts is printed on bar code form on this bar code area of article tag or bill.And when checking, when extracting the image feature information of texture structure image acquisition region 11, can be with reference to the identification allowable error information in this bar code, to help judging whether the characteristic information of the texture structure image that is extracted is correct.
Further specify the method that the present invention forms the safeguard protection body and verifies its true and false below in conjunction with operation steps.Suppose before this and made the safeguard protection body by adding described fluorescent fiber; and on this safeguard protection body, printed texture structure image acquisition region, setting circle, elements of a fix axle, and the pattern of expression commodity or bill title, sequence number, the date of production, the amount of money etc., literal, numeric string, symbol etc.
The step that the present invention forms the safeguard protection body is:
Step 2, image processing software in the computing machine extracts the characteristic information of image from the BMP bitmap file, and as required, import the image recognition permissible error of each concrete feature to computing machine, value and image recognition permissible error thereof with each concrete characteristic quantity are printed on article tag or the bill by bar-code printer;
Step 3, with characteristic information and the image recognition permissible error thereof that extracts, out of Memory on article tag or the bill is as plaintext in addition, the information of input except that image feature information (being kept in the computing machine) in computing machine, such as, can import commodity date of production, utilize built-in private key and formula (1) (2) to calculate digital signature by computing machine, and with this digital signature as the anti-counterfeiting mark sign indicating number, be printed on article tag or the bill.
The concrete steps of checking article label or papers comprise:
Step 2, by step 2 operation that forms the safeguard protection body, scanning collection forms the BMP bitmap file;
Step 3 reads bar code information in article tag or the bill by bar code reader;
Step 4, the BMP bitmap file that forms in the step 2 is input in the computing machine, also be input to the bar code file that forms in the step 3 in the computing machine, this computing machine also has communication port and the communication software that communicates with bar code reader, bar code figure can be converted to Preserving Electronic Information in computing machine;
Step 5, computing machine utilizes image processing software to extract the image feature information of BMP bitmap file, and according to from the bar code data converted, obtaining image feature amount and image recognition permissible error, with image feature information that extracts and the data of changing out from bar code figure, compare one by one by feature, if the deviation of each characteristic all in the permissible error scope of correspondence, then is judged as very, otherwise is judged to be vacation;
Step 6, the checking anti-counterfeiting identification code, input is as the cleartext information (image feature information needn't be imported) of digital signature in computing machine, should be when the signing and issuing used cleartext information of this cleartext information is identical, such as the date of production of importing again on the article tag, and the anti-counterfeiting mark sign indicating number on the input article tag, utilize built-in PKI and formula (1) (3) certifying digital signature by computing machine, the V and the anti-counterfeiting mark sign indicating number that are about to obtain in the formula (3) compare, if it is identical, can judge that then this article tag is real, otherwise determine that it is false.
Method of the present invention; principle based on " complicated chance phenomenon is difficult to repetition and artificial control "; technology such as comprehensive utilization Flame Image Process and password encryption algorithm; for the safeguard protection body provides triple false proof designs; can guarantee whether the safeguard protection body that is verified is distorted, is forged, it is true and false also to pick out material effectively fast.
Claims (10)
1. encryption antiforgery method based on substance characteristics is included in and forms signing and issuing processing procedure and to the veritification processing procedure that the anti-counterfeiting information on the safeguard protection body is verified, it is characterized in that of anti-counterfeiting information on the safeguard protection body:
The processing procedure of signing and issuing of described formation anti-counterfeiting information further comprises:
A. add tangible material in the technological process of making the safeguard protection body, this tangible material forms the texture structure with the incorporate stochastic distribution of safeguard protection body on the safeguard protection body;
B. the texture structure with stochastic distribution is converted to and can is utilized image processing method to extract the characteristic information of image from image information by the image information of Computer Processing;
C. with the characteristic information that extracts and the anti-tamper information on the safeguard protection body as expressly, form digital signature through encryption;
D. this digital signature is produced on the safeguard protection body as the anti-counterfeiting mark sign indicating number;
The described veritification processing procedure that anti-counterfeiting information is verified further comprises:
E. the texture structure with stochastic distribution on the safeguard protection body is converted to and can is utilized image processing method to extract the characteristic information of image from image information by the image information of Computer Processing;
F. the digital signature on the safeguard protection body is reverted to the characteristic information that includes image and the plaintext of anti-tamper information through decryption processing;
G. the characteristic information of characteristic information that step e is obtained and step F acquisition relatively and with the anti-tamper information of step F acquisition and the anti-tamper information on the safeguard protection body compares, and judgement safeguard protection body is true when relatively more consistent.
2. a kind of encryption antiforgery method according to claim 1 based on substance characteristics, it is characterized in that: in the described steps A, described tangible material is irregular fibrous or graininess, and the texture structure of the stochastic distribution that is made of this material has the characteristic that can be read or gather by external device.
3. a kind of encryption antiforgery method based on substance characteristics according to claim 2 is characterized in that: described tangible material is the material that can passively send light in one section frequency spectrum different in size, that thickness is uneven, color is different.
4. a kind of encryption antiforgery method according to claim 1 based on substance characteristics; it is characterized in that: the safeguard protection body in the described steps A comprises storage of negotiable securities, bank money or the article tag of papery; described tangible material is added in the paper pulp, forms the texture structure original image that forms by tangible material stochastic distribution in the safeguard protection surface of papery.
5. a kind of encryption antiforgery method according to claim 1 based on substance characteristics; it is characterized in that: among the described step B; being to open an out-of-the-way texture structure image acquisition region on described safeguard protection body, is that texture structure original image with stochastic distribution in this zone is converted to can be by the image information of Computer Processing.
6. a kind of encryption antiforgery method based on substance characteristics according to claim 5 is characterized in that: also record positioning seat parameter and location concentric circles by printing or mode of printing on the described texture structure image acquisition region.
7. a kind of encryption antiforgery method according to claim 1 based on substance characteristics, it is characterized in that: among the described step B, the characteristic information of described extraction image, comprise and extract more than one image feature amount, with the image recognition allowable error of each characteristic quantity, be the bit information of the some represented with the numerical value mode.
8. a kind of encryption antiforgery method according to claim 1 based on substance characteristics, it is characterized in that: described step C, comprise that also image feature amount and the image recognition allowable error thereof that will extract are made into bar code printing on the bar code area of described safeguard protection body, maybe make bar code printing on the bar code area of described safeguard protection body with the anti-tamper information combination system on the image feature amount, image recognition allowable error and the safeguard protection body that extract; In the described step F, also comprise the bar code information of reading on the described bar code area; Among the described step G, be that the cleartext information that bar code information and step F obtain is compared.
9. a kind of encryption antiforgery method based on substance characteristics according to claim 1 is characterized in that: among the described step C, the cleartext information encryption is become digital signature, further comprise:
C1. cleartext information is converted to coded message expressly;
C2. coded message is expressly asked the hash operation of summary, formed Xiao Ming's literary composition coded message;
C3. by the signature computing Xiao Ming's literary composition coded message is made enciphering transformation with private key and form digital signature with electronic cipher feature;
In the described step F, the digital signature decryption processing is become expressly, by the checking computing digital signature is done the deciphering conversion with PKI and form.
10. a kind of encryption antiforgery method based on substance characteristics according to claim 1 is characterized in that: among the described step D, be to utilize printing or mode of printing that the anti-counterfeiting mark sign indicating number is recorded in the numerical ciphers district of safeguard protection body.
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| CN 01145114 CN1259634C (en) | 2001-12-30 | 2001-12-30 | Encryption antiforgery method based on substance characteristics |
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| CN 01145114 CN1259634C (en) | 2001-12-30 | 2001-12-30 | Encryption antiforgery method based on substance characteristics |
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| CP03 | Change of name, title or address |
Address after: Nine road 518040 Guangdong city of Shenzhen province Futian District Tairan 213 building 6 floor C-3 block Patentee after: Shenzhen Sinosun Technology Co., Ltd. Address before: Nine road 518040 Shenzhen city Futian District Tairan 213 building 6 floor C-3 block Patentee before: Sinosun Technology (Shenzhen) Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20060614 |