CN102842052A - Identity code generation method - Google Patents
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- CN102842052A CN102842052A CN2012102879122A CN201210287912A CN102842052A CN 102842052 A CN102842052 A CN 102842052A CN 2012102879122 A CN2012102879122 A CN 2012102879122A CN 201210287912 A CN201210287912 A CN 201210287912A CN 102842052 A CN102842052 A CN 102842052A
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Abstract
The invention discloses an identity code generation method. The identity code sequentially comprises a product code, a data code, a random code and a check code; the method comprises the following steps of: (1) pre-generating a random mapping relation between the product code and a product barcode; (2) pre-generating the random mapping relation between the data code and the date of every day; (3) pre-generating the data of the random code; (4) acquiring the corresponding product code from the mapping relation according to the product barcode; (5) acquiring the corresponding date code; (6) acquiring the random code and recording the beginning, the destination, the number of the applied code and the product ID; (7) encoding and generating a new product code and encoding the product code; (8) encoding and generating a new date code; (9) jointing the code into a temporary identity code; (10) calculating one check code; (11) jointing the identity code obtained from the step (9) and the check code obtained from the step (10) into a final required identity code.
Description
Technical field
The present invention relates to the product identification automatic identification field; Relate more specifically to the identification of bar code, two-dimension code and RFID; More specifically; The invention discloses a kind of generation method of identity code, it can generate a kind of out of order, irregular, irregular but include certain logicality and can product bar code information be incorporated in false proof identity code interior, that the term of validity is long, capacity is huge, reaches the purpose that indicates every the unique identity of article in the whole world.
Background technology
At present, there are some product false proof identification tags on the market, when being used for the consumer and buying product, implement real and fake discrimination product.Anti-counterfeit recognition marker great majority on these product false proof identification labels are digital forms, and these numerals often figure place are shorter, only can represent unique identity of a certain series products, and product that can not compatible magnanimity.And these numerals have certain rules usually, randomness a little less than, guessd out rule by the fake producer easily and copy.
The design of existing false proof identification tag has following defective:
1) form of expression is single
At present, all be to adopt the form of numeral to indicate its identity on nearly all false proof identification tag, and do not adopt the form of bar code or two-dimension code and RFID.Adopt digital form to carry out false proof; The subject matter of bringing is the not convenient property of inquiry; The consumer wants step-by-step is one by one with digital anti-counterfeiting identity code entry terminal query facility (note, portal website), and inputing to the consumer has brought inconvenience by hand, also causes the possibility of input error simultaneously.Simultaneously; Owing to adopted the false proof identity code of digital form; Collecting device (like POS machine, PDA) at the intermediate links technical grade can't be gathered its identity information, and the result who causes can't write down the circulation path of this product, can't carry out deeper trace to the source false proof.
2) capacity is less
At present, the product false proof identification code bit number on the market is all shorter, often has only 12～14, and the longest also generally have only 16.The figure place of this length is enough for its capacity of a series products only, but does not possess the ability of compatible expression more products.When inserting more products; Its capacity does not just reach the requirement of actual product quantity far away; The result who causes like this is necessary for each series products generating algorithm of the false proof identity code of customization one cover separately, also is unfavorable for being incorporated into same false proof identity authentication platform when having increased cost.
3) be easy to deduce
At present, the product false proof identity code randomness on the market all a little less than, on the structure of security code, all have certain logicality and coupling, generally can find certain rules through visual inspection.Such as, the false proof identity code for some products of A in the product of Class A batch is 0,100 2,023 7584, another batch is 0,100 2,024 7585 for the false proof identity code of the product of B.It is 0,100 2,024 7482 that a batch of false proof identity code for the product of B is arranged again.Can infer that through observing 2024 representatives batch be the product of B, and 2023 to represent batch be the product of A, 0100 representative Class A product.This coded system is beneficial to one's own coding range of every each batch of series products division; Texture ratio is more clear; Be convenient to physical store and the inquiry of data volume when big; But the problem of bringing is can or deduce through analogy to obtain certain rules, but to the fake producer certain operating space is provided.If but adopt not from the generating algorithm of the false proof identity code of segmentation in logic;, mass data when physical store and data query, all can bring huge expense when inserting; And can't itself obtain its more products relevant information from false proof identity code, so the generating algorithm of most of false proof identity codes has been taked the form of segmentation logically at present.
4) can't comprise product bar code information
At present, product false proof identity code and product bar code on the market do not have any getting in touch, and promptly can't obtain the product bar code of this product through the product false proof identity code, can't from product bar code, obtain the base attribute that this product has.Simultaneously, because can't obtain product bar code,, be incorporated into same false proof identity authentication platform so can not be classification with the product.Even can pass through the product bar code in the manually input packing of product, but also will improve the complicacy of operation greatly.
Summary of the invention
The objective of the invention is provides a kind of identity code to generate methods and applications to above-mentioned weak point, is a kind of out of order, irregular, irregular but include certain logicality and can product bar code information be incorporated algorithm and application in the false proof identity code interior, that the term of validity long, the access product capacity is huge.Can be through adopting said method so that the product capacity that inserts improves greatly; Guarantee one yard of a thing simultaneously and can't find any rule; But the algorithm reduction through certain can be found its inner logicality and product bar code information fast; Be convenient to carry out the physical store of mass data, improved the relevance between the data on the physical storage device greatly, promoted the time of inquiry response according to its logicality.Simultaneously, because single job can obtain product bar code information when obtaining security code, thus in false proof, also inquire the essential information of this series products more easily, like specification, price, the place of production etc.Even ultra the merchant, settle accounts thereby also can scan false proof identity code acquisition product bar code.
Particularly, the invention discloses a kind of identity code generating method, described identity code comprises product code, date code, random code and check code successively; Said method comprises the steps:
1) generates between product code and the product bar code mapping relations at random in advance;
2) in advance the date of formation sign indicating number and the mapping relations at random on date every day at least 20 years;
3) generate the random code data in advance, described random code data are regularly to generate every day;
4) from the mapping relations that step 1) generated, obtain corresponding product code according to product bar code;
5) according to current date from step 2) obtain corresponding date code the mapping relations that generated;
6) obtain random code, in the random code data that step 3) generated, select starting point and terminal point to obtain the random code of certain bar number and start of record, terminal point, application number and product IDs at random;
7) coding generates new product code, and the product code that step 4) obtained is encoded, and utilizes random number that fixed number is done computing, thereby upsets fixed number;
8) coding generates new date code, and the date code that step 5) obtained is encoded, and utilizes random number that fixed number is done computing, thereby upsets fixed number;
9) be assembled into the temporary identity sign indicating number, date code that product code that step 7) obtained and step 8) are obtained and the random code that step 6) obtained are combined into the temporary identity sign indicating number in order;
10) calculate 1 bit check sign indicating number, and calculate 1 bit check sign indicating number according to the temporary identity sign indicating number that step 9) obtained;
11) check code that identity code and step 10) obtained that step 9) obtained is combined into final required identity code.
Further, in identity code generating method disclosed by the invention, the compatible multiple coded system of identity code, identity code can depend on multiple external expressive form and medium simultaneously.The identity code foundation length is 20, dynamically expands the position according to actual needs.The foundation length of said product code is 7, and the foundation length of date code is 4, and the foundation length of random code is 8, and check code length is 1.Product code provides 10,000,000 kinds of products to insert simultaneously at least.Can also increase the kind of required access product through the length that increases product code.Described check bit is that numeral that product code, date code and random code are formed is done the plus-minus modular arithmetic and obtained by the front numeral.
Described coded system comprises Code39 sign indicating number (39 yards of standards), Codabar sign indicating number (Ku Deba sign indicating number), Code25 sign indicating number (25 yards of standards), ITF25 sign indicating number (intersecting 25 yards), Matrix25 sign indicating number (25 yards in matrix), UPC-A sign indicating number, UPC-E sign indicating number, EAN-13 sign indicating number (EAN-13 international product bar code), EAN-8 sign indicating number (EAN-8 international product bar code), EAN-39 sign indicating number, China Post's sign indicating number (a kind of variants that matrix is 25 yards), Code-B sign indicating number, MSI sign indicating number, Code11 sign indicating number, Code93 sign indicating number, ISBN sign indicating number, ISSN sign indicating number, Code128 sign indicating number (the Code128 sign indicating number comprises the EAN128 sign indicating number) and Code39EMS (EMS special-purpose 39 yards) etc.
In addition, multiple external expressive form and medium that identity code can depend on comprise bar code, two-dimension code and RFID etc.
Description of drawings
Fig. 1 is the process flow diagram of identity code generating method of the present invention.
Embodiment
Below will combine accompanying drawing that the present invention is described further:
With reference to accompanying drawing 1, the identity code of generation of the present invention comprises product code, date code, random code and check code successively.The compatible multiple coded system of identity code, identity code can depend on multiple external expressive form and medium simultaneously.The identity code foundation length is 20, dynamically expands the position according to actual needs.The foundation length of said product code is 7, and the foundation length of date code is 4, and the foundation length of random code is 8, and check code length is 1.Product code provides 10,000,000 kinds of products to insert simultaneously at least.Can also increase the kind of required access product through the length that increases product code.Described check bit is that numeral that product code, date code and random code are formed is done the plus-minus modular arithmetic and obtained by the front numeral.
Described coded system comprises Code39 sign indicating number (39 yards of standards), Codabar sign indicating number (Ku Deba sign indicating number), Code25 sign indicating number (25 yards of standards), ITF25 sign indicating number (intersecting 25 yards), Matrix25 sign indicating number (25 yards in matrix), UPC-A sign indicating number, UPC-E sign indicating number, EAN-13 sign indicating number (EAN-13 international product bar code), EAN-8 sign indicating number (EAN-8 international product bar code), EAN-39 sign indicating number, China Post's sign indicating number (a kind of variants that matrix is 25 yards), Code-B sign indicating number, MSI sign indicating number, Code11 sign indicating number, Code93 sign indicating number, ISBN sign indicating number, ISSN sign indicating number, Code128 sign indicating number (the Code128 sign indicating number comprises the EAN128 sign indicating number) and Code39EMS (EMS special-purpose 39 yards) etc.
Multiple external expressive form and medium that identity code can depend on comprise bar code, two-dimension code and RFID etc.
Identity code generating method of the present invention comprises step:
1) generates between product code and the product bar code mapping relations at random in advance.
2) in advance the date of formation sign indicating number and the mapping relations at random on date every day at least 20 years.
3) generate the random code data in advance, described random code data are regularly to generate every day.
4) from the mapping relations that step 1) generated, obtain corresponding product code according to product bar code.
5) according to current date from step 2) obtain corresponding date code the mapping relations that generated.
6) obtain random code
In the random code data that step 3) generated, select starting point and terminal point to obtain the random code of certain bar number and start of record, terminal point, application number and product IDs at random.If obtained random number for same series products the same day once more, need calculate starting point and the terminal point that makes new advances according to the starting point of last time, terminal point and this bar number that obtains, guaranteeing does not have overlapping interval and is continuous for the interval of same series products application at every turn in one day.
7) coding generates new product code.Product code to step 4) obtained is encoded, and utilizes random number that fixed number is done computing, thereby upsets fixed number.As: addition modular arithmetic in back m position of the n position random code that will be obtained m position product code that step 4) obtained and step 6) to one doing mathematics.
8) coding generates new date code.Date code to step 5) obtained is encoded, and utilizes random number that fixed number is done computing, thereby upsets fixed number.As: addition modular arithmetic in back a position of the n position random code that a position date code that step 5) obtained and step 6) are obtained to one doing mathematics.
9) be assembled into the temporary identity sign indicating number.The product code that step 7) obtained, the date code that step 8) obtained and the random code that step 6) obtained are combined into the temporary identity sign indicating number in order.
10) calculate 1 bit check sign indicating number.Calculate 1 bit check sign indicating number according to the temporary identity sign indicating number that step 9) obtained.The verification rule of check code is 10-(odd bits+3* even bit) %10.
11) check code that temporary identity sign indicating number that step 9) obtained and step 10) is obtained is combined into final required identity code.
Through the generating algorithm of above-mentioned identity code, can generate false proof identity code at random for product, the false proof identity code that generates every day keeps uniqueness and randomness, can't find inherent law from the surface.And capacity is huge, can be a kind of product limit every day and generates at least 1 hundred million false proof identity code (can dynamically expand the position as required, strengthen the capacity that each product inserts).Can insert at least 1 thousand ten thousand type product (can dynamically expand the position as required, strengthen the capacity of access product type) simultaneously, for it generates false proof identity code.Such as, 7 product codes can insert 1,000 ten thousand types product simultaneously; When being extended to 8 product codes, then the capacity of access product increases to 100,000,000; When being extended to 9 product codes, then capacity increases to 1,000,000,000.And the term of validity of identity code is 20 years (can dynamically expand the position as required, strengthen the capacity on date) at least, guarantees that the data at least 20 years can not repeat.
Table 1: the product code example that 13 product bar codes of present national regulation is mapped at random 7.
| ID | 13 product bar codes | 7 product codes |
| 1 | 6922266438844 | 5872576 |
| 2 | 6923450656150 | 9478325 |
| … | … | … |
The employing foundation length is that 4 date code can guarantee that the term of validity of every product is 20 years at least, the identity code that can not duplicate in promptly at least 20 years.4 date codes adopt the methods that generate in advance, and each the number Random assignment in 0000 ~ 9999 is given a date and preserved.
Table 2: the date is mapped to 4 date code examples at random.
| ID | Date | Random number |
| 1 | 2012/01/01 | 2750 |
| 2 | 2012/01/02 | 1218 |
| … | … | … |
| 9999 | 2038/12/31 | 8547 |
Foundation length is that 8 random code can guarantee that be that a certain series products generates 100,000,000 false proof identity code every day.8 random codes adopt the methods that generate in advance, upset and preserve (seeing table 3) through too much wheel 00000000 ~ 99999999.
8 random numbers are taken rule as follows: be that the A product is when obtaining 8 random numbers for the first time the same day; At first generate a random number X1, X1=1 hundred million-requirement, and with its origin information X1 and endpoint information Y1=X1+requirement-1; Preserve, with reference to shown in the table 4.Be A product when obtaining 8 random numbers for the second time the same day, if Y1+1+requirement=1 hundred million, with Y1+1 as secondary starting point, i.e. X2=Y1+1, secondary terminal point is Y2=X2+needed number amount – 1, with reference to shown in the table 5.If Y1+1+requirement>100,000,000, X1-1 is as secondary starting point, i.e. and X2=X1-1, secondary terminal point are that Y2=X2+1-this obtains quantity, with reference to shown in the table 6.When repeatedly obtaining 8 figure places more by that analogy.
Table 3: 8 random numbers are carried out out of order arrangement example.
| ID | Random number |
| 1 | 73678984 |
| 2 | 67376532 |
| … | … |
| 99999999 | 54675462 |
Table 4: get 8 pairing starting and terminal point examples of random number for the first time.
| Sequence | Product | The random number starting point | The random number terminal point | The application number | Index | Date of application |
| 000001 | A | 5001 | 15000 | 10000 | 1 | 2012-1-1 |
Table 5: get this application number ≤1 hundred million pairing starting and terminal point example of 8 random numbers and last random number terminal point+1+ for the second time.
| Sequence | Product | The random number starting point | The random number terminal point | The application number | Index | Date of application |
| 000001 | A | 5001 | 15000 | 10000 | 1 | 2012-1-1 |
| 000002 | A | 15001 | 25000 | 10000 | 2 | 2012-1-1 |
Table 6: get this application number of 8 random numbers and last random number terminal point+1+ for the second time>100,000,000 pairing starting and terminal point examples.
| Sequence | Product | The random number starting point | The random number terminal point | The application number | Index | Date of application |
| 000001 | A | 99985001 | 99995000 | 10000 | 1 | 2012-1-1 |
| 000002 | A | 99985000 | 99975001 | 10000 | 2 | 2012-1-1 |
Check bit operation rule: 10-(odd bits+3* even bit) %10.
Identity code generating method of the present invention related coding method be to select a kind of reversible algorithm, it utilizes random code and fixed number to do computing, and fixed number is upset.As: with back 7 one addition modular arithmetic of 7 product codes and 8 random codes to one doing mathematics.Equally, with back 4 one addition modular arithmetic of 4 date codes and 8 random codes to one doing mathematics.Even the result who does like this can be so that fixing product code and date code also can generate new random digit at every turn, thereby also can generate the false proof identity code that does not have rule and repeating part arbitrarily on the same day even guarantee each series products more.Guarantee that false proof identity code is out of order, irregular, irregular.
For example, the content of former 20 false proof identity code is 23***** * * * * * 94***** (* is represented as Any Digit), and the 1st of 7 product codes is that 7 the 1st is 9 after 2,8 random codes, both addition moulds 10, i.e. (2+9) %10=1.The 2nd of 7 product codes is that 7 the 2nd is 4 after 3,8 random codes, both addition moulds 10, i.e. (3+4) %10=7.20 behind the coding are 17***** * * * * * 94*****.
The corresponding coding/decoding method of identity code generating method of the present invention be random code that coding back is generated according to before random number when upsetting do the inverse operation of encryption algorithm, be reduced into original fixed number.As: 7 product code and 8 random codes back 7 one inverse operation to encryption algorithm before one do, can decode to coding identity code later.Thereby find false proof identity code inner regularity and logicality, reduce its original information that has, so that can optimize the physical storage structure and the response time of improving inquiry of mass data.
For example, 20 behind the coding are 17***** * * * * * 94*****.The 1st of 7 is 9 after the 1st 1,8 random code behind the coding, and the inverse operation of encryption algorithm is that both subtract each other the mould as a result 10 that adds modulus 10, i.e. (1+10-9) % 10=2 before doing.The 2nd of 7 is 4 after the 2nd 7,8 random codes behind the coding, and both subtract each other the mould as a result 10 that adds modulus 10, i.e. (7+10-4) % 10=3.Can decode 20 original identity code 23***** * * * * * 94*****.
In the application of reality; Identity code generating method of the present invention can be applied in the product false proof; Wherein the production person generates false proof identity code for this request for product; Consumer or dealer carry out identity code scanning through POS terminal, intelligent mobile phone terminal and resolve, and perhaps use note, voice and WEB to carry out the input of identity code numeral; Thereby accomplish the perhaps inquiry of the true and false of appending of circulation path.
When, when being applied in identity code generating method of the present invention in the product false proof, correspondingly, it comprises the steps:
1) the production person generates false proof identity code for this request for product.
2) identity code that generates specified quantity for this product according to above-mentioned identity code generating algorithm is as false proof identity code.When generating identity code, filter according to the front three of the product bar code of application product, the front three of the identity code of avoiding generating and the front three of product bar code are consistent, reach the purpose of better differentiation identity code and product bar code.
3) with step 2) the false proof identity code that generates carries out physical store, and the storage of data is done subregion by product category and time.
4) enclose an identity for each part product and indicate, promptly stick the false proof identity code of generation.
5) consumer or dealer carry out identity code scanning parsing through POS terminal, intelligent mobile phone terminal, perhaps use note, voice and WEB to carry out the input of identity code numeral.
6) the identity code content that step 5) was resolved to is decoded, reduce its real identity code content.According to the inverse operation of the computing of encoded product sign indicating number before, decode real product code.According to before the encode inverse operation of computing of date code, decode real date code.
7) in physical store, navigate to these data with real product code and the date code that gets access to rapidly as the subregion querying condition.Can make the operation of reading in and revising to these data, accomplish the perhaps inquiry of the true and false of appending of circulation path.
8) corresponding relation that the product code that obtains with step 6) is inquired about product code and product bar code finds original product bar code, can utilize market, the original POS system in supermarket to obtain the essential information of product according to product bar code, and then directly settle accounts.
Can know that to sum up the present invention possesses following advantage:
1) false proof identity code depends on multiple external expressive form and medium, comprises: bar code, two-dimension code and RFID etc. make things convenient for the information acquisition of intermediate links.
2) the identity code capacity is huge.It is 20 codings that identity code adopts foundation length, can insert 1,000 ten thousand kinds of products at least, and be that every kind of product can generate 100,000,000 false proof identity code every day.And the time limit that has of each identity code was at least 20 years.And can require to expand the position according to reality.
3) identity code adopts coding techniques, makes clocklike intervally dynamically to be upset, and can't find any contact clocklike from the surface.But can reduce original identity code through decoding technique, be convenient to the physical store of big data quantity and the rapid inquiry response under the mass data through its internal connection.
4) identity code substitute products bar code.The information that includes product bar code in the identity code can find the product bar code information that is associated through algorithm.Ultra with the merchant in the process of circulation, the run-down identity code just can replace the action of original scanning product bar code, in false proof process of reviewing, accomplishes checkout automatically.
5) identity code adopts pregenerated scheme, can generate needed false proof identity code for it rapidly when the request of generation is arranged.
Though accompanying drawing and above stated specification have provided embodiments of the invention.But it is understandable that, from the considering of above-mentioned disclosed content of the present invention and embodiment, it will be appreciated by those skilled in the art that other embodiments of the present invention.And instructions of the present invention and embodiment should only think exemplary, and scope of the present invention and the spirit that is contained should be limited appended claim, and no matter whether it is clearly provided in instructions.Scope of the present invention is the same wide with the scope that accompanying claims provides at least.
Claims (5)
1. identity code generating method, described identity code comprises product code, date code, random code and check code successively; Said method comprises the steps:
1) generates between product code and the product bar code mapping relations at random in advance;
2) in advance the date of formation sign indicating number and the mapping relations at random on date every day at least 20 years;
3) generate the random code data in advance, described random code data are regularly to generate every day;
4) from the mapping relations that step 1) generated, obtain corresponding product code according to product bar code;
5) according to current date from step 2) obtain corresponding date code the mapping relations that generated;
6) obtain random code, in the random code data that step 3) generated, select starting point and terminal point to obtain the random code of certain bar number and start of record, terminal point, application number and product IDs at random;
7) coding generates new product code, and the product code that step 4) obtained is encoded, and utilizes random number that fixed number is done computing, thereby upsets fixed number;
8) coding generates new date code, and the date code that step 5) obtained is encoded, and utilizes random number that fixed number is done computing, thereby upsets fixed number;
9) be assembled into the temporary identity sign indicating number, date code that product code that step 7) obtained and step 8) are obtained and the random code that step 6) obtained are combined into the temporary identity sign indicating number in order;
10) calculate 1 bit check sign indicating number, and calculate 1 bit check sign indicating number according to the temporary identity sign indicating number that step 9) obtained;
11) check code that identity code and step 10) obtained that step 9) obtained is combined into final required identity code.
2. identity code generating method according to claim 1 is characterized in that: described identity code foundation length is 20, dynamically expands the position according to actual needs; The foundation length of wherein said product code is 7, and the foundation length of date code is 4, and the foundation length of random code is 8, and check code length is 1.
3. identity code generating method according to claim 1 and 2 is characterized in that: the verification rule of check code is 10-(odd bits+3* even bit) %10 in the step 10).
4. identity code generating method according to claim 3 is characterized in that: described identity code includes but not limited to bar code, two-dimension code and RFID.
5. according to the identity code generating method of claim 1 or 4; Wherein said coded system includes but not limited to Code39 sign indicating number (39 yards of standards), Codabar sign indicating number (Ku Deba sign indicating number), Code25 sign indicating number (25 yards of standards), ITF25 sign indicating number (intersecting 25 yards), Matrix25 sign indicating number (25 yards in matrix), UPC-A sign indicating number, UPC-E sign indicating number, EAN-13 sign indicating number (EAN-13 international commodity bar code), EAN-8 sign indicating number (EAN-8 international commodity bar code), EAN-39 sign indicating number, China Post's sign indicating number (a kind of variants that matrix is 25 yards), Code-B sign indicating number, MSI sign indicating number, Code11 sign indicating number, Code93 sign indicating number, ISBN sign indicating number, ISSN sign indicating number, Code128 sign indicating number (the Code128 sign indicating number comprises the EAN128 sign indicating number) and Code39EMS (EMS special-purpose 39 yards).
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| CN104426662A (en) * | 2013-09-05 | 2015-03-18 | 珠海格力电器股份有限公司 | Physical equipment login password processing method and device |
| CN105184083A (en) * | 2015-09-14 | 2015-12-23 | 南京延长科技有限公司 | Digital identity code used for medical instrument whole-process quality tracing and coding method thereof |
| CN106130566A (en) * | 2016-06-30 | 2016-11-16 | 江苏鼎昌科技有限公司 | A kind of 72 bit status information big data traceability system can error correction coding/decoding method |
| CN108805245A (en) * | 2018-06-08 | 2018-11-13 | 南京华博科技有限公司 | A kind of generation method of the identity code of combination Handle |
| CN108875968A (en) * | 2018-06-06 | 2018-11-23 | 中山新诺科技股份有限公司 | Generation method, product code printing method and the production method of product identification information |
| CN108875871A (en) * | 2018-06-08 | 2018-11-23 | 南京华博科技有限公司 | A kind of generation method of the identity code of combination OID |
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