CN105354717B - A kind of colour commodity counterfeit prevention code generating method - Google Patents
A kind of colour commodity counterfeit prevention code generating method Download PDFInfo
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Abstract
The invention discloses a kind of colored commodity counterfeit prevention code generating methods, include the following steps: the commodity sign code for characterizing certain part commodity unique identity information being converted to binary data；The initial value and parameter of chaos system are calculated using commercial product identification information and external key, two groups of chaotic signal binary sequences are generated after being iterated to chaotic maps；The bit manipulation as unit of 2bits is carried out to commodity sign code using Chaotic Binary signal, generates the anti-counterfeit number for being superimposed with color background, and then combination producing colour commodity counterfeit prevention code.The present invention proposes colored commodity counterfeit prevention code generating method simple possible, has very strong safety, is not easy to crack, and the colored commodity counterfeit prevention code of generation has " uniqueness and unforgeable ".
Description
Technical field
The present invention relates to digital false-proof technology field, in particular to a kind of colored commodity counterfeit prevention code generating method.
Background technique
Today's society, commodity forge the serious problems that global economy field face is had become with food and drug safety,
It not only greatly compromises the vital interests of production firm and the majority of consumers, has upset market order, but also to brand building
Extremely bad influence is brought with maintaining social stability.Existing security code generation technique, by its used Encryption Algorithm
General lack of the analysis and guarantee of attack tolerant energy, the performance of generated commodity counterfeit prevention code still needs to further increase, in anti-fake effect
It is unsatisfactory in terms of fruit.Simultaneously with social development, people want commodity packaging appearance, security code visual effect
It asks and increasingly improves.In the case, color background character is introduced, proposes that a kind of simple possible, safety are not easy the colored quotient cracked
The anti-fake code generating method of product generates the commodity counterfeit prevention code with " uniqueness and unforgeable ", extremely urgent.
Summary of the invention
Goal of the invention: the purpose of the present invention is to solve deficiencies in the prior art, provide a kind of colored commodity counterfeit prevention
Code generating method is carried out the position as unit of 2bits to commodity sign code using chaotic signal and is grasped using customized corresponding relationship
Make, generates the anti-counterfeit number for being superimposed with color background, and then combination producing colour commodity counterfeit prevention code, guarantee that mentioned method is simple with this
It is feasible, there is very strong safety, be not easy to crack, the colored commodity counterfeit prevention code of generation has " uniqueness and unforgeable ".
Technical solution: a kind of colored commodity counterfeit prevention code generating method of the present invention comprises the following steps:
(1) according to customized commodity sign code character and binary data corresponding relationship, it is unique that certain part commodity will be characterized
The commodity sign code A of identity information is converted to binary data, to obtain commodity sign binary sequence P1, wherein commodity mark
The length for knowing code A is expressed as L, and commodity sign binary sequence P1 length is 7 × Lbits；
(2) hash value and external key Z of certain part commodity sign code are utilized10、Z20, distinguish according to formula as follows
The initial value X of chaos system is calculated1、Y1With system parameter μ,
X1=mod (sum (bin2dec (H))/256 × N ÷ 8+Z10-Z20,1)
Y1=mod (sum (bin2dec (B))/16 × N ÷ 4+Z20-Z10,1)
μ=3.9+mod (sum (bin2dec (H))/256 × N ÷ 8-Z10,0.1)
Wherein, the hash value of certain part commodity sign code be length N be greater than 7 × L binary stream, be expressed as be with 8bits
The sequence of unitWith the sequence as unit of 4bitsZ10∈(-1,1)、Z20∈(-1,1)；
(3) by initial value X1With system parameter μ and initial value Y1And system parameterChaos shown in following formula is reflected respectively
Row iteration is injected,
XK+1=μ * XK*(1-XK)
Chaotic signal sequence X and Y are obtained, therefrom takes chaotic signal sequence X 1 and Y1 of the element with formation length for L respectively,
Each element in chaotic signal sequence X 1 and Y1 is carried out integer shown in following formula simultaneously to handle, obtains chaotic signal integer
Sequence X 2 and Y2,
Wherein,For the operation for taking the integer smaller than the number,
Each element in chaotic signal integer sequence X2 and Y2 is converted into 7 bit binary datas again, so that it is equal to obtain length
For chaotic signal the binary sequence XX and YY of 7 × L；
(4) parity for judging 7 × L of data, if it is odd number, respectively at the end of binary sequence P1, XX and YY
Binary digit ' 0 ' or ' 1 ' is filled, comprising even number binary digit ' 0 ' in the binary sequence that makes that treated；
(5) binary sequence P1, XX and YY are grouped as unit of 2bits, every group successively according to following formula
Operation is carried out,
(C2*k-1,C2*k)=(P12*k-1,P12*k)⊕(XX2*k-1,XX2*k)-(YY2*k-1,YY2*k)
Wherein, operator ' ⊕ ' is step-by-step xor operation, and operator '-' is two binary subtraction operations,
Obtain anti-pseudorandom binary sequence C；
(6) binary sequence C is grouped according to 7bits for unit, in every group preceding 5bits according to customized two into
Data processed and commodity counterfeit prevention sign character corresponding relationship obtain the anti-counterfeit number character string that length is L, in every group last 2bits according to
Customized binary data and commodity counterfeit prevention color corresponding relationship obtain the anti-counterfeit number colour sequential that length is L, then
Corresponding be superimposed of anti-counterfeit number character string and colour sequential is formed into colored anti-counterfeit number, then combines commodity sign code and colored anti-counterfeit number
Generate colored commodity counterfeit prevention code.
Preferably, the commodity sign code of certain part commodity unique identity information is characterized described in step (1), by ASCLL
The character visible of code value ∈ [32,126] forms, including numerical character ' 0 '~' 9 ', capitalization ' A '~' Z ', lowercase
' a '~' z ' and punctuation mark character.
Preferably, customized commodity sign code character described in step (1) and binary data corresponding relationship: number
Word character ' 0 '~' 9 ', capitalization ' A '~' Z ', lowercase ' a '~' z ' are respectively converted into corresponding by its ASCLL code value
7 bit binary datas；Position is that the punctuation mark character of odd number is converted to by its ASCLL code value corresponding 7 in commodity sign code
Bit binary data；Position is the punctuation mark character of even number in commodity sign code, '！' → 0000000, " " →
0000001, ' #' → 0000010, ' $ ' → 0000011, ' %' → 0000100, ' &' → 0000101, ' `' → 0000110, ' ('
→ 0000111, ') ' → 0001000, ' * ' → 0001001, '+' → 0001010, ', ' → 0001011, '-' →
0001100, ' .' → 0001101, '/' → 0001110, ': ' → 0001111, '；' → 0010000, ' < ' → 0010001, '='
→ 0010010, ' > ' → 0010011, '? ' → 0010100, '@' → 0010101, ' [' → 0010110, ' ' →
0010111, '] ' → 0011000, ' ^' → 0011001, ' _ ' → 0011010, ' " → 0011011, ' ' → 0011100, ' | ' →
0011101, ' ' → 0011110, '~' → 0011111, ' ' → 1111111.
Preferably, customized binary data described in step (6) and commodity counterfeit prevention sign character corresponding relationship are as follows:
00000→‘0'；00001→‘1'；00010→‘2'；00011→‘3'；00100→‘4'；00101→‘5'；00110→‘6'；
00111→‘7'；01000→‘8'；01001→‘9'；01010→‘A'；01011→‘B'；01100→‘C'；01101→‘D'；
01110→‘E'；01111→‘F'；10000→‘G'；10001→‘H'；10010→‘I'；10011→‘J'；10100→‘K'；
10101→‘L'；10110→‘M'；10111→‘N'；11000→‘O'；11001→‘P'；11010→‘Q'；11011→‘R'；
11100→‘S'；11101→‘T'；11110→‘U'；11111→‘V'.
Preferably, customized binary data described in step (6) and commodity counterfeit prevention color corresponding relationship are as follows:
00 → white；01 → red；10 → green；11 → blue.
Preferably, described in step (6) that anti-counterfeit number character string and the corresponding superposition formation of colour sequential is colored anti-fake
Number, refer to that anti-counterfeit number character adding has a respective background color, background color and corresponding anti-counterfeit number solid colour.
Preferably, the commodity counterfeit prevention of commodity sign code described in step (6) and colored anti-counterfeit number combination producing colour
Code refers to the combination being directly linked in sequence using commodity sign code and colored anti-counterfeit number.
The utility model has the advantages that the present invention uses customized corresponding relationship (commodity sign code character and binary data, binary number
According to commodity counterfeit prevention sign character and binary data and commodity counterfeit prevention color), using chaotic signal to commodity sign code into
Bit manipulation of the row as unit of 2bits generates the anti-counterfeit number for being superimposed with color background, and then combination producing colour commodity counterfeit prevention
Code guarantees a kind of colored commodity counterfeit prevention code generating method simple possible that the present invention is proposed, and has very strong safety, not fragile
Solution, to guarantee that the colored commodity counterfeit prevention code generated has " uniqueness and unforgeable ".
Detailed description of the invention
Fig. 1 is colored commodity counterfeit prevention code product process schematic diagram of the invention.
Specific embodiment
A kind of colored commodity counterfeit prevention code generating method as shown in Figure 1, comprises the following steps:
(1) according to customized commodity sign code character and binary data corresponding relationship, it is unique that certain part commodity will be characterized
The commodity sign code A of identity information is converted to binary data, to obtain commodity sign binary sequence P1, wherein commodity mark
Knowing code A includes numerical character ' 0 '~' 9 ', capitalization ' A '~' Z ', lowercase ' a '~' z ' and punctuation mark character etc.
The character visible of ASCLL code value ∈ [32,126], the length of commodity sign code A are expressed as L, commodity sign binary sequence P1 long
Degree is 7 × Lbits；
Wherein, the corresponding relationship of commodity sign code character and binary data are as follows: numerical character ' 0 '~' 9 ', capitalization
' A '~' Z ', lowercase ' a '~' z ' are respectively converted by corresponding 7 bit binary data of its ASCLL code value；Commodity sign
Position is that the punctuation mark character of odd number is converted to by corresponding 7 bit binary data of its ASCLL code value in code；Commodity sign code
Middle position is as shown in table 1 for the corresponding relationship that the punctuation mark character of even number is converted to binary data,
1 customized commodity sign code character (punctuation mark character) of table and binary data mapping table
(2) hash value and external key Z of certain part commodity sign code are utilized10、Z20, distinguish according to formula as follows
The initial value X of chaos system is calculated1、Y1With system parameter μ,
X1=mod (sum (bin2dec (H))/256 × N ÷ 8+Z10-Z20,1)
Y1=mod (sum (bin2dec (B))/16 × N ÷ 4+Z20-Z10,1)
μ=3.9+mod (sum (bin2dec (H))/256 × N ÷ 8-Z10,0.1)
Wherein, the hash value of certain part commodity sign code be length N be greater than 7 × L binary stream, be expressed as be with 8bits
The sequence of unitWith the sequence as unit of 4bitsZ10∈(-1,1)、Z20∈ (- 1,1), it is seen that the initial value X of chaos system1、
Y1With system parameter μ,Not only with external key (Z10, Z20) related, and can be with commercial product identification information change；
(3) by initial value X1With system parameter μ and initial value Y1And system parameterChaos shown in following formula is reflected respectively
Row iteration is injected,
XK+1=μ * XK*(1-XK)
Chaotic signal sequence X and Y are obtained, therefrom takes chaotic signal sequence X 1 and Y1 of the element with formation length for L respectively,
Each element in chaotic signal sequence X 1 and Y1 is carried out integer shown in following formula simultaneously to handle, obtains chaotic signal integer
Sequence X 2 and Y2,
Wherein,For the operation for taking the integer smaller than the number,
Each element in chaotic signal integer sequence X2 and Y2 is converted into 7 bit binary datas again, so that it is equal to obtain length
For chaotic signal the binary sequence XX and YY of 7 × L；
(4) parity for judging 7 × L of data, if it is odd number, respectively at the end of binary sequence P1, XX and YY
Binary digit ' 0 ' or ' 1 ' is filled, comprising even number binary digit ' 0 ' in the binary sequence that makes that treated；
(5) binary sequence P1, XX and YY are grouped as unit of 2bits, every group successively according to following formula
Operation is carried out,
(C2*k-1,C2*k)=(P12*k-1,P12*k)⊕(XX2*k-1,XX2*k)-(YY2*k-1,YY2*k)
Wherein, operator ' ⊕ ' is step-by-step xor operation, and operator '-' is two binary subtraction operations,
Obtain anti-pseudorandom binary sequence C；
(6) binary sequence C is grouped according to 7bits for unit, in every group preceding 5bits according to customized two into
Data processed and commodity counterfeit prevention sign character corresponding relationship (being shown in Table 2) obtain length for the anti-counterfeit number character string of L, in every group finally
2bits according to customized binary data and commodity counterfeit prevention color corresponding relationship, i.e., " 00 → white, 01 → red, 10 →
Green, 11 → blue " obtains the anti-counterfeit number colour sequential that length is L, then by anti-counterfeit number character adding respective background color,
Its background color and corresponding anti-counterfeit number solid colour, to form colored anti-counterfeit number, then it is anti-fake using commodity sign code and colour
The commodity counterfeit prevention code of number mode combination producing colour being directly linked in sequence.
The customized binary data of table 2 and commodity counterfeit prevention sign character mapping table
Below with reference to specific embodiment, the invention will be further described:
Embodiment 1
According to above-mentioned colored commodity counterfeit prevention code generating method, steps are as follows:
(1) when the identification code A of certain part commodity be " A123456 2015-09-01 1234B0000001 ", length L=31,
According to commodity sign code character customized in table 1 and binary data corresponding relationship, the commodity sign two that length is 217 is obtained
System sequence P1 be 1,0,0,0,0,0,1,0,1,1,0,0,0,1,0,1,1,0,0,1,0,0,1,1,0,0,1,1,0,1,1,0,
1,0,0,0,1,1,0,1,0,1,0,1,1,0,1,1,0,1,1,1,1,1,1,1,0,1,1,0,0,1,0,0,1,1,0,0,0,0,
0,1,1,0,0,0,1,0,1,1,0,1,0,1,0,1,0,1,1,0,1,0,1,1,0,0,0,0,0,1,1,1,0,0,1,0,0,0,
1,1,0,0,0,1,1,0,0,0,0,0,1,1,0,0,0,1,0,1,0,0,0,0,0,0,1,1,0,0,0,1,0,1,1,0,0,1,
0,0,1,1,0,0,1,1,0,1,1,0,1,0,0,1,0,0,0,0,1,0,0,1,1,0,0,0,0,0,1,1,0,0,0,0,0,1,
1,0,0,0,0,0,1,1,0,0, 0,0,0,1,1,0,0,0,0,0,1,1,0,0,0,0,0,1,1,0,0,0,1}；
(2) taking external key is Z10=0.54321, Z20=0.56789, utilize the hash value of part commodity sign code A
Chaos is calculated according to formula in above-mentioned colored commodity counterfeit prevention code generating method step (2) in (taking N=512) and external key
The initial value X of system1、Y1With system parameter μ,For
X1=mod (8405/256 × 512 ÷ 8+0.54321-0.56789,1)=0.48832048828125
Y1=mod (1010/16 × 512 ÷ 4+0.56789-0.54321,1)=0.5178440625
μ=3.9+mod (8405/256 × 512 ÷ 8-0.54321,0.1)=3.96979048828125
(3) by initial value X1With system parameter μ and initial value Y1And system parameterAccording to above-mentioned colored commodity counterfeit prevention code
Chaotic signal sequence X and Y is calculated in chaotic maps formula shown in generation method step (3), respectively from the 251st element
Continuously take 31 elements to form chaotic signal sequence X 1 and Y1, while will be on each element carries out in chaotic signal sequence X 1 and Y1
State integer shown in colored commodity counterfeit prevention code generating method step (3) processing, obtain chaotic signal integer sequence X2=81,
0,124,33,42,74,107,49,116,62,12,39,66,100,16,61,12,126,35,67,22,48,28,78,117,
62,60,86,103,38,50 } and Y2=95,72,100,20,38,108,77,121,54,126,17,118,4,97,30,
85,49,104,36,61,20,25,68,112,10,82,46,92,57,39,17 },
Each element in chaotic signal integer sequence X2 and Y2 is converted into 7 bit binary datas, to obtain length and be
217 chaotic signal binary sequence XX=1,0,1,0,0,0,1,0,0,0,0,0,0,0,1,1,1,1,1,0,0,0,1,0,
0,0,0,1,0,1,0,1,0,1,0,1,0,0,1,0,1,0,1,1,0,1,0,1,1,0,1,1,0,0,0,1,1,1,1,0,1,0,
0,0,1,1,1,1,1,0,0,0,0,1,1,0,0,0,1,0,0,1,1,1,1,0,0,0,0,1,0,1,1,0,0,1,0,0,0,0,
1,0,0,0,0,0,1,1,1,1,0,1,0,0,0,1,1,0,0,1,1,1,1,1,1,0,0,1,0,0,0,1,1,1,0,0,0,0,
1,1,0,0,1,0,1,1,0,0,1,1,0,0,0,0,0,0,1,1,1,0,0,1,0,0,1,1,1,0,1,1,1,0,1,0,1,0,
1,1,1,1,1,0,0,1,1,1,1,0,0,1,0,1,0,1,1,0,1,1,0,0,1,1,1,0,1,0,0,1,1,0,0,1,1,0,
0,1,0 } and YY=1,0,1,1,1,1,1,1,0,0,1,0,0,0,1,1,0,0,1,0,0,0,0,1,0,1,0,0,0,1,0,0,
1,1,0,1,1,0,1,1,0,0,1,0,0,1,1,0,1,1,1,1,1,0,0,1,0,1,1,0,1,1,0,1,1,1,1,1,1,0,
0,0,1,0,0,0,1,1,1,1,0,1,1,0,0,0,0,0,1,0,0,1,1,0,0,0,0,1,0,0,1,1,1,1,0,1,0,1,
0,1,0,1,0,1,1,0,0,0,1,1,1,0,1,0,0,0,0, 1,0,0,1,0,0,0,1,1,1,1,0,1,0,0,1,0,1,0,
0,0,0,1,1,0,0,1,1,0,0,0,1,0,0,1,1,1,0,0,0,0,0,0,0,1,0,1,0,1,0,1,0,0,1,0,0,1,
0,1,1,1,0,1,0,1,1,1,0,0,0,1,1,1,0,0,1,0,1,0,0,1,1,1,0,0,1,0,0,0,1}；
(4) 217 are judged for odd number, then fill binary digit ' 0 ' at the end of binary sequence P1 respectively and (contain in former P1
127 ' 0 '), binary digit ' 1 ' (containing 112 ' 0 ' in former XX) is filled at the end of binary sequence XX, binary sequence YY's
Fill binary digit ' 0 ' in end (containing 113 ' 0 ' in former YY)；
(5) binary sequence P1, XX and YY are grouped as unit of 2bits, every group successively according to above-mentioned colour
Formula shown in commodity counterfeit prevention code generating method step (5) carries out operation, obtains the anti-pseudorandom binary sequence C that length is 218
=1,0,1,1,0,1,0,1,1,1,1,0,0,1,1,1,0,1,0,1,0,0,0,0,1,1,1,0,1,1,1,1,0,0,0,0,0,
1,0,0,1,1,0,0,1,0,0,0,0,0,0,1,0,1,0,1,0,1,1,0,0,0,1,1,0,1,0,0,0,0,0,1,0,1,1,
0,1,1,1,0,1,1,0,0,1,1,0,1,0,1,1,0,1,1,0,1,1,1,0,1,1,0,0,1,0,1,1,0,1,1,0,0,0,
0,0,1,1,0,1,0,1,0,0,1,1,1,1,1,0,0,1,1,1,1,0,0,0,1,0,1,0,1,1,0,0,0,0,0,1,1,1,
0,1,0,1,1,0,1,1,0,1,1,0,1,1,1,0,0,1,0,1,1,0,1,0,1,1,1,1,1,0,0,1,1,0,0,1,1,0,
0,0,1,1,0,1,0,0,1,1,1,1,1,0,0,1,1,0,0,1,1,0,0,1,0,0,1,0,1}；
(6) binary sequence C is grouped according to 7bits for unit, preceding 5bits is two according to shown in table 2 in every group
Binary data and commodity counterfeit prevention sign character corresponding relationship obtain the anti-counterfeit number character string that length is 31
" MUQ3U445CKBRQDCR39PHCERNMVP6FC4 ", in every group last 2bits according to " 00 → it is white；01 → red；10→
Green；11 → blue " corresponding relationship, acquisition anti-counterfeit number colour sequential it is green, and it is red, it is green, it is green, it is white, it is blue, it is white, it is red, it is red, it is white, it is red,
It is white, it is blue, it is blue, it is green, it is white, it is red, it is blue, it is blue, it is red, it is white, it is green, it is red, it is white, it is green, it is white, it is green, it is green, it is green, it is blue, green, superposition forms colored anti-fake
Number be " M (green) U (red) Q (green) 3 (green) U (white) 4 (indigo plant) 4 (white) 5 (red) C (red) K (white) B (red) R (white) Q (indigo plant) D (indigo plant) C
(green) R (white) 3 (red) 9 (indigo plant) P (indigo plant) H (red) C (white) E (green) R (red) N (white) M (green) V (white) P (green) 6 (green) F (green) C
(indigo plant) 4 (green) " is combined, the colored commodity of generation using commodity sign code and colored anti-counterfeit number directly sequential connection mode
Security code is " 4 (white) 5 A123456 2015-09-01 1234B0000001M (green) U (red) Q (green) 3 (green) U (white) 4 (indigo plant)
(red) C (red) K (white) B (red) R (white) Q (indigo plant) D (indigo plant) C (green) R (white) 3 (red) 9 (indigo plant) P (indigo plant) H (red) C (white) E (green) R
(red) N (white) M (green) V (white) P (green) 6 (green) F (green) C (indigo plant) 4 (green) ", wherein " M (green) " indicates the word of green background color
Female M, others and so on.
It can be seen that it is mixed and disorderly that this patent, which mentions a kind of colored commodity counterfeit prevention code generating method colored security code generated,
Without chapter, not initial data any trace.
Embodiment 2
According to above-mentioned colored commodity counterfeit prevention code generating method, the identification code A of certain part commodity and its colored security code generate step
Suddenly similar to specific embodiment 1, only slight change: Z occurs for some external key10=0.543210000000001；Or Z20=
0.567890000000001, the results are shown in Table 3 for the generation of colored commodity counterfeit prevention code.From following table: once external key is
Make that slight change occurs, the colored anti-counterfeit number of generation can occur greatly to change, it can be seen that this patent mentions a kind of colored quotient
The anti-fake code generating method of product has key sensibility.
When 3 external key of table is slightly variable, the generation result of colored commodity counterfeit prevention code
Embodiment 3
According to above-mentioned colored commodity counterfeit prevention code generating method, external key and its colored security code generation step and specific real
Apply commodity sign code A (such as " the A123456 2015-09-01 1234B0000002 ", " A123456 that example 1 is similar, is slightly variable
The colored commodity that 2015-09-02 1234B0000001 " and " B123456 2015-09-02 1234B0000001 ") is generated are anti-
The results are shown in Table 4 for pseudo-code.From following table: the slight change of commodity sign code can cause colored anti-counterfeit number (including anti-counterfeit number
Character string and colour sequential) it changes a lot, it can be seen that this patent mentions a kind of colored commodity counterfeit prevention code generating method
There is sensibility to commercial product identification information (i.e. commodity sign code).
When 4 commodity sign code of table is slightly variable, the generation result of colored commodity counterfeit prevention code
By above-mentioned specific embodiment 2 and the analysis of example 3 it is found that this patent mentions a kind of colored commodity counterfeit prevention code generating method institute
It is not only closely related with external key to generate colored commodity counterfeit prevention code, but also depends on commercial product identification information (i.e. commodity sign
Code), therefore a kind of colored commodity counterfeit prevention code generating method that this patent is mentioned has very strong safety, can preferably resist
Known/chosen -plain attact is not easy to crack, and " uniqueness and can not be forged with guaranteeing that the colored commodity counterfeit prevention code generated has
Property ".
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, but anything that does not depart from the technical scheme of the invention content, according to the technical essence of the invention
Any simple modification, equivalent change and modification to the above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (7)
1. a kind of colour commodity counterfeit prevention code generating method, which is characterized in that comprise the following steps:
(1) according to customized commodity sign code character and binary data corresponding relationship, certain part commodity unique identities will be characterized
The commodity sign code A of information is converted to binary data, to obtain commodity sign binary sequence P1, wherein commodity sign code
The length of A is expressed as L, and commodity sign binary sequence P1 length is 7 × Lbits；
(2) hash value and external key Z of certain part commodity sign code are utilized10、Z20, calculated separately according to formula as follows
Obtain the initial value X of chaos system1、Y1With system parameter μ,
X1=mod (sum (bin2dec (H))/256 × N ÷ 8+Z10-Z20,1)
Y1=mod (sum (bin2dec (B))/16 × N ÷ 4+Z20-Z10,1)
μ=3.9+mod (sum (bin2dec (H))/256 × N ÷ 8-Z10,0.1)
Wherein, the hash value of certain part commodity sign code is the binary stream that length N is greater than 7 × L, is expressed as unit of 8bits
SequenceWith the sequence as unit of 4bitsZ10∈(-1,1)、Z20∈(-1,1)；
(3) by initial value X1With system parameter μ and initial value Y1And system parameterRespectively to chaotic maps shown in following formula into
Row iteration,
XK+1=μ * XK*(1-XK)
Chaotic signal sequence X and Y are obtained, therefrom takes chaotic signal sequence X 1 and Y1 of the element with formation length for L respectively, simultaneously
Each element in chaotic signal sequence X 1 and Y1 is subjected to the processing of integer shown in following formula, obtains chaotic signal integer sequence
X2 and Y2,
Wherein,For the operation for taking the integer smaller than the number,
Each element in chaotic signal integer sequence X2 and Y2 is converted into 7 bit binary datas again, thus obtain length be 7 ×
Chaotic signal the binary sequence XX and YY of L；
(4) parity for judging 7 × L of data is filled at the end of binary sequence P1, XX and YY respectively if it is odd number
Binary digit ' 0 ' or ' 1 ', comprising even number binary digit ' 0 ' in the binary sequence that makes that treated；
(5) binary sequence P1, XX and YY are grouped as unit of 2bits, every group successively carries out according to following formula
Operation,
Wherein, operatorFor step-by-step xor operation, operator '-' is two binary subtraction operations,
Obtain anti-pseudorandom binary sequence C；
(6) binary sequence C is grouped according to 7bits for unit, preceding 5bits is according to customized binary number in every group
According to commodity counterfeit prevention sign character corresponding relationship, obtain the anti-counterfeit number character string that length is L, last 2bits is according to making by oneself in every group
The binary data and commodity counterfeit prevention color corresponding relationship of justice obtain the anti-counterfeit number colour sequential that length is L, then will be anti-fake
Sign character string and the corresponding superposition of colour sequential form colored anti-counterfeit number, then commodity sign code and colored anti-counterfeit number combination producing is color
The commodity counterfeit prevention code of color.
2. a kind of colored commodity counterfeit prevention code generating method according to claim 1, it is characterised in that: described in step (1)
Characterization certain part commodity unique identity information commodity sign code, by ASCLL code value ∈ [32,126] character visible form, packet
Include numerical character ' 0 '~' 9 ', capitalization ' A '~' Z ', lowercase ' a '~' z ' and punctuation mark character.
3. a kind of colored commodity counterfeit prevention code generating method according to claim 1, it is characterised in that: described in step (1)
Customized commodity sign code character and binary data corresponding relationship: numerical character ' 0 '~' 9 ', capitalization ' A '~
' Z ', lowercase ' a '~' z ' are respectively converted by corresponding 7 bit binary data of its ASCLL code value；Position in commodity sign code
The punctuation mark character for being set to odd number is converted to by corresponding 7 bit binary data of its ASCLL code value；Position in commodity sign code
For the punctuation mark character of even number, '！' → 0000000, ' " ' → 0000001, ' #' → 0000010, ' $ ' → 0000011, ' %'
→ 0000100, ' &' → 0000101, ' `' → 0000110, ' (' → 0000111, ') ' → 0001000, ' * ' → 0001001, '
+ ' → 0001010, ', ' → 0001011, '-' → 0001100, ' .' → 0001101, '/' → 0001110, ': ' →
0001111, '；' → 0010000, '<' → 0010001, '=' → 0010010, '>' → 0010011, '? ' → 0010100, '@'
→ 0010101, ' [' → 0010110, ' ' → 0010111, '] ' → 0011000, ' ^' → 0011001, ' _ ' → 0011010, ' "
→ 0011011, ' ' → 0011100, ' | ' → 0011101, ' ' → 0011110, '~' → 0011111, ' ' → 1111111.
4. a kind of colored commodity counterfeit prevention code generating method according to claim 1, it is characterised in that: described in step (6)
Customized binary data and commodity counterfeit prevention sign character corresponding relationship are as follows: 00000 → ' 0 '；00001→‘1'；00010→
‘2'；00011→‘3'；00100→‘4'；00101→‘5'；00110→‘6'；00111→‘7'；01000→‘8'；01001→
‘9'；01010→‘A'；01011→‘B'；01100→‘C'；01101→‘D'；01110→‘E'；01111→‘F'；10000→
‘G'；10001→‘H'；10010→‘I'；10011→‘J'；10100→‘K'；10101→‘L'；10110→‘M'；10111→
‘N'；11000→‘O'；11001→‘P'；11010→‘Q'；11011→‘R'；11100→‘S'；11101→‘T'；11110→
‘U'；11111→‘V'.
5. a kind of colored commodity counterfeit prevention code generating method according to claim 1, it is characterised in that: described in step (6)
Customized binary data and commodity counterfeit prevention color corresponding relationship are as follows: 00 → white；01 → red；10 → green；11
→ blue.
6. a kind of colored commodity counterfeit prevention code generating method according to claim 1, it is characterised in that: described in step (6)
The corresponding superposition of anti-counterfeit number character string and colour sequential is formed into colored anti-counterfeit number, refer to that anti-counterfeit number character adding has respective background
Color, background color and corresponding anti-counterfeit number solid colour.
7. a kind of colored commodity counterfeit prevention code generating method according to claim 1, it is characterised in that: described in step (6)
Commodity sign code and colored anti-counterfeit number combination producing colour commodity counterfeit prevention code, refer to anti-fake using commodity sign code and colour
Number combination being directly linked in sequence.
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