CN106330461A - Optical label anti-counterfeiting method and system based on one-way hash function - Google Patents
Optical label anti-counterfeiting method and system based on one-way hash function Download PDFInfo
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- CN106330461A CN106330461A CN201610785929.9A CN201610785929A CN106330461A CN 106330461 A CN106330461 A CN 106330461A CN 201610785929 A CN201610785929 A CN 201610785929A CN 106330461 A CN106330461 A CN 106330461A
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- Prior art keywords
- optical label
- moment
- hash function
- way hash
- authentication
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3236—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions
- H04L9/3239—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/088—Usage controlling of secret information, e.g. techniques for restricting cryptographic keys to pre-authorized uses, different access levels, validity of crypto-period, different key- or password length, or different strong and weak cryptographic algorithms
Abstract
The invention relates to an optical label anti-counterfeiting method and system based on a one-way hash function, which is convenient to use and is good in anti-counterfeiting performance. The method comprises the following steps: step 1, establishing the one-way hash function for optical label anti-counterfeiting in an authentication server, setting initial parameters of the one-way hash function, and carrying out confidential processing; step 2, setting an authentication period and a starting point moment, storing the authentication period and the starting point moment in an optical label controller together with the one-way hash function; step 3, carrying out anti-counterfeiting verification by a user by using mobile collection equipment when collecting an optical label; step 4, inputting a received current authentication moment in the one-way hash function by the authentication server to acquire a current verification signal, if the current verification signal is the same as a received current output signal, the optical label collected by the user is legal, and otherwise, the optical label collected by the user is illegal; and step 5, sending a legal or an illegal verification result of the optical label to the mobile collection equipment by the authentication server to complete an optical label anti-counterfeiting operation based on the one-way hash function.
Description
Technical field
The present invention relates to optical label method for anti-counterfeit, a kind of optical label method for anti-counterfeit based on one-way hash function and
System.
Background technology
The use of optical label has long distance, visible light conditions loosely requires, directivity advantage strong, orientable, and light
Label display content changes the most rapidly, it is provided that substantial amounts of information capacity, has higher than traditional two-dimension code label
Information interaction capabilities, provides huge convenience for user and businessman.Owing to the registration of optical label is open, anyone can
By buying or applying for that optical label issues individual service or information, this has resulted in lawless person and has forged the possibility of optical label.For
Prevent the illegal forgery of optical label, it is necessary to provide the method for anti-counterfeit of optical label.
Summary of the invention
For problems of the prior art, the present invention provides a kind of false proof side of optical label based on one-way hash function
Method and system, process advantages of simple, easy to use, anti-counterfeiting performance is good.
The present invention is to be achieved through the following technical solutions:
A kind of optical label method for anti-counterfeit based on one-way hash function, it comprises the steps,
Step one, in certificate server, sets up and is used for the one-way hash function that optical label is false proof, arrange it and initially join
Number, and carry out secrecy processing；
Step 2, sets authentication period and starting point moment, and stored along to optical label control together with one-way hash function
In device；Optical label controller overseas broadcast authentication period and starting point moment；
From the starting point moment, often obtaining a certification moment through an authentication period, each certification moment is by unidirectional
Hash function obtains an output signal, and optical label controller controls optical label and output signal carried out in the corresponding certification moment
Output display；
Step 3, user carries out fake certification by mobile collection equipment when gathering optical label；
First authentication period and the starting point moment of open broadcast are consulted；
Then according to authentication period and starting point moment, by first certification moment after the current time of collection optical label
As the current authentication moment, and gather current output signal corresponding to current authentication moment；
Finally it is sent in certificate server verify by current authentication moment and current output signal；
Step 4, the current authentication moment received is input in one-way hash function currently be tested by certificate server
Card signal；If current authentication signal is identical with the current output signal received, then the optical label that user gathers is legal, otherwise
The optical label that user gathers is illegal；
Step 5, optical label identification result legally or illegally is sent on mobile collection equipment by certificate server, complete
Become the anti-pseudo-operation of optical label based on one-way hash function.
Preferably, in step 2, described output signal as optical label at a frame of corresponding certification moment output or
Comprise in the frame.
Preferably, in step 2, described starting point moment uses 24 hours systems to carry out record, including time, point and second information.
A kind of optical label Antiforge system based on one-way hash function, including,
Optical label controller, for overseas broadcast authentication period and starting point moment, when according to authentication period and starting point
Obtain the certification moment quarter, and be engraved in one-way hash function during according to certification and obtain output signal and control the output display of optical label；
Mobile collection equipment, for consulting authentication period and the starting point moment of open broadcast, is used for gathering optical label signal
And record acquisition time, and the current authentication moment of record and the current output signal of collection are transported in certificate server,
Certificate server, for kept secure one-way hash function；By one-way hash function according to the current authentication moment
Obtain current authentication signal, and by current output signal and current authentication signal contrast, if the same to mobile collection equipment
Send the identification result that optical label is legal, otherwise send, to mobile collection equipment, the identification result that optical label is illegal.
Compared with prior art, the present invention has a following useful technique effect:
The present invention uses and calculates cryptographic Hash respectively when the control output of optical label is verified with certificate server, then carries out one
Cause property relatively realizes legitimacy and differentiates.Trusting relationship is set up at the unipolarity of hash function and algorithm itself by this method
In confidentiality, therefore it is guaranteed in safety.Owing to authentication period can arrange the least thus meet renewal speed spy
Not fast requirement, this is that other tag system is beyond one's reach, and therefore can solve the anti-pseudo problem of optical label and have preferably
Safety.
Accompanying drawing explanation
Fig. 1 is the optical label sample described in present example.
Fig. 2 is Antiforge system schematic diagram described in present example.
Fig. 3 is method for anti-counterfeit flow chart described in present example.
In figure: 1 is user, 2 mobile collection equipment, 3 is optical label, and 4 is certificate server.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, described in be explanation of the invention and
It not to limit.
Heretofore described optical label, as shown in Figure 1.Optical label includes signal element and location mark two parts, letter
Being referred to as data bit and flag bit, wherein location is designated three bigger rectangle frames of upper figure, and these three rectangle frames are referred to as one group to be determined
Bit identifier, under duty, location mark is with certain Frequency Synchronization flicker, can quickly be obtained by the method for image difference
By shooting equipment Inspection out, and then may determine that the position of signal element by location mark, thus carry out data identification with
Read.
Signal element is the little square of rectangle black and white between the mark of location, and multiple signal elements constitute one group, usual signal
The array of unit composition 5 × 5 (being not limited to), each signal element represents " 0 " or " 1 " of digital signal, whole signal element group
The matrix of composition constitutes the digital signal sequences of a frame, and in this sample, the length of side of flag is the twice of the data bit length of side, more
It is easy to location；In order to increase the data space that signal element represents, under duty, each signal element also can be according to predetermined journey
Sequence is flashed, thus is shown by multiframe by more signal content.At this moment need in multiframe, provide a start frame/knot
Beam identification frame, for demarcating the beginning/end position of one complete cycle of multiframe, this frame signal unit group be set as one special
Data combination, such as: full 0 or complete 1 or any with the not different specific combination of information of actual capabilities statement.
Optical label Antiforge system in the present invention, as shown in Figure 2.User 1 uses mobile collection equipment 2 to enter optical label 3
Row gathers, and is differentiated optical label 3 by certificate server 4.
Optical label method for anti-counterfeit based on one-way hash function of the present invention, as it is shown on figure 3, it includes walking as follows
Suddenly,
Step one, chooses an one-way hash function, is designated as Hash (), sets the initial parameter of Hash (), and by Hash ()
It is confidential state with Initial parameter sets, can not the most outwardly leak；One period of time T of random setting is as authentication period
With starting point moment t0, T > 0, t0For any one fixed time of every day, t0Record format be hh:mm:ss, instant: point: the second,
Thus obtain tlv triple { Hash (), T, t0}；This tlv triple is sent to the controller of optical label 3, Hash () is sent simultaneously
To certificate server 4；Controller is with t0For starting point, often through integer T moment, i.e. t0+ nT, n are natural number, then by current time
Input as the certification moment, be input in Hash (), available output signal；Using output signal as a frame of optical label or bag
Containing in the frame, at this certification moment t0+ nT shows；By T and t0Issue and out make public, can be passed through by any user
Public information inquiry is known；
Step 2: user 1 passes through mobile collection equipment 2 at current time tiOptical label 3 information gathered, i is integer；With
The verity of optical label 3 is thrown doubt upon by family 1, then user 1 utilizes disclosed information T and t0, in current time tiFirst afterwards
Individual t0+ kT the moment is positive integer as current authentication moment t, k, output when mobile collection equipment 2 gathers current authentication moment t
Current output signal as validation value X, t herei＜ t0+ kT and (t0+kT)-ti<T；
Step 3: the current authentication moment t gathering X is sent to certificate server 4 together with X by mobile collection equipment 2；
Step 4: current authentication moment t is input to the uni-directional hash as mobile collection equipment 2 by certificate server 4
Function Hash (), obtains exporting current authentication signal Y；Relatively X and Y, if the two is consistent, optical label 3 is legal, otherwise cursor
Sign 3 to emit for puppet；
Step 5: identification result is sent to mobile collection equipment 2 by certificate server 4, terminates.
Example time specifically used is as follows.
The market M information by optical label L publishing commodity.It is one-way function that market M selectes MD5 algorithm, week seclected time
Phase is 5 seconds, and the starting point moment is 00:00:00, obtains tlv triple { MD5；5,00:00:00}, tlv triple is sent to optical label L,
MD5 algorithm is sent to certificate server simultaneously；(5,00:00:00) are published simultaneously；Optical label L with 00:00:00 is
Starting point often spends 5 seconds using current time as input, is input in MD5 algorithm, obtains output valve；Above-mentioned MD5 is exported by optical label L
Value is as optical label one frame in corresponding time showing out；During 12:30:33, client G wants to buy commodity by optical label L,
But be there is suspection in the verity of optical label L；Client G is according to consulting public information (5,00:00:00), by oneself individual
Mobile phone H, collect distance 12:30:33 nearest, meet time away from the integral multiple that initial time 00:00:00 is 5 seconds: 12:
30:35 is the certification moment, and reading the frame data that this moment L shows is 3428942978, and by acquisition time 12:30:35 and
3428942978 is sent along to authentication server S；S receives (12:30:35,3428942978), is inputted by 12:30:35
MD5 obtains being output as 3428942978, and the result sent to H is consistent, then assert that L is really the legal optical label of businessman M and informs
User G, certification terminates.
Assailant does not knows one-way function and the initial parameter thereof that M used, so conscientious frame cannot be forged；And authentication frame
It is time dependent, it is possible to resist the Replay Attack of assailant.
Claims (4)
1. an optical label method for anti-counterfeit based on one-way hash function, it is characterised in that it comprises the steps,
Step one, in certificate server, sets up and is used for the one-way hash function that optical label is false proof, arrange its initial parameter, and
Carry out secrecy processing；
Step 2, sets authentication period and starting point moment, and stored along in optical label controller together with one-way hash function；
Optical label controller overseas broadcast authentication period and starting point moment；
From the starting point moment, often obtaining a certification moment through an authentication period, each certification moment is by uni-directional hash
Function obtains an output signal, and optical label controller controls optical label and output signal exported in the corresponding certification moment
Display；
Step 3, user carries out fake certification by mobile collection equipment when gathering optical label；
First authentication period and the starting point moment of open broadcast are consulted；
Then according to authentication period and starting point moment, by the work in first certification moment after the current time of collection optical label
For the current authentication moment, and gather current output signal corresponding to current authentication moment；
Finally it is sent in certificate server verify by current authentication moment and current output signal；
Step 4, the current authentication moment received is input in one-way hash function obtain current authentication letter by certificate server
Number；If current authentication signal is identical with the current output signal received, then the optical label that user gathers is legal, otherwise user
The optical label gathered is illegal；
Step 5, optical label identification result legally or illegally is sent on mobile collection equipment, completes base by certificate server
The anti-pseudo-operation of optical label in one-way hash function.
A kind of optical label method for anti-counterfeit based on one-way hash function the most according to claim 1, it is characterised in that step
In two, described output signal or comprises in the frame at a frame of corresponding certification moment output as optical label.
A kind of optical label method for anti-counterfeit based on one-way hash function the most according to claim 1, it is characterised in that step
In two, described starting point moment uses 24 hours systems to carry out record, including time, point and second information.
4. an optical label Antiforge system based on one-way hash function, it is characterised in that include,
Optical label controller, for overseas broadcast authentication period and starting point moment, for obtaining according to authentication period and starting point moment
To the certification moment, and it is engraved in one-way hash function during according to certification and obtains output signal and control the output display of optical label；
Mobile collection equipment, for consulting authentication period and the starting point moment of open broadcast, is used for gathering optical label signal and remembering
Record acquisition time, and the current authentication moment of record and the current output signal of collection are transported in certificate server,
Certificate server, for kept secure one-way hash function；Obtained according to the current authentication moment by one-way hash function
Current authentication signal, and by current output signal and current authentication signal contrast, if the same send to mobile collection equipment
The identification result that optical label is legal, otherwise sends, to mobile collection equipment, the identification result that optical label is illegal.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610785929.9A CN106330461B (en) | 2016-08-30 | 2016-08-30 | A kind of optical label method for anti-counterfeit and system based on one-way hash function |
| CN201780051636.0A CN109792387B (en) | 2016-08-30 | 2017-08-30 | Anti-counterfeiting method and system for optical communication device |
| PCT/CN2017/099635 WO2018041131A1 (en) | 2016-08-30 | 2017-08-30 | Anti-counterfeiting method and system for optical communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610785929.9A CN106330461B (en) | 2016-08-30 | 2016-08-30 | A kind of optical label method for anti-counterfeit and system based on one-way hash function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106330461A true CN106330461A (en) | 2017-01-11 |
| CN106330461B CN106330461B (en) | 2019-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610785929.9A Active CN106330461B (en) | 2016-08-30 | 2016-08-30 | A kind of optical label method for anti-counterfeit and system based on one-way hash function |
| CN201780051636.0A Active CN109792387B (en) | 2016-08-30 | 2017-08-30 | Anti-counterfeiting method and system for optical communication device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780051636.0A Active CN109792387B (en) | 2016-08-30 | 2017-08-30 | Anti-counterfeiting method and system for optical communication device |
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| Country | Link |
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| CN (2) | CN106330461B (en) |
| WO (1) | WO2018041131A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018041131A1 (en) * | 2016-08-30 | 2018-03-08 | 陕西外号信息技术有限公司 | Anti-counterfeiting method and system for optical communication device |
| CN109934319A (en) * | 2017-12-19 | 2019-06-25 | 陕西外号信息技术有限公司 | Optical communication apparatus and corresponding method for anti-counterfeit and system |
| CN109934032A (en) * | 2017-12-19 | 2019-06-25 | 陕西外号信息技术有限公司 | Optical communication apparatus and corresponding method for anti-counterfeit and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2768091Y (en) * | 2004-12-29 | 2006-03-29 | 王庆旺 | False-proof device for diversified commodities |
| CN104751341A (en) * | 2015-04-14 | 2015-07-01 | 贵州天酒酒业销售有限公司 | Commodity anti-counterfeiting method based on two-dimensional code dynamic passwords |
| CN105184590A (en) * | 2015-09-25 | 2015-12-23 | 三明学院 | Laser on-line efficient etching and product anti-fake traceability system applied to steels |
| WO2016065861A1 (en) * | 2014-10-31 | 2016-05-06 | 杭州沃朴物联科技有限公司 | System and method for real-time verification of clock synchronisation-based dynamic password anti-counterfeiting tag validity |
| CN105701673A (en) * | 2016-02-29 | 2016-06-22 | 依波精品（深圳）有限公司 | Watch anti-fake traceablility method and system based on two-dimensional codes |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7497379B2 (en) * | 2004-02-27 | 2009-03-03 | Microsoft Corporation | Counterfeit and tamper resistant labels with randomly occurring features |
| JP2007214691A (en) * | 2006-02-07 | 2007-08-23 | Murata Mach Ltd | Image forming apparatus |
| JP5000723B2 (en) * | 2007-10-22 | 2012-08-15 | シャープ株式会社 | Mobile communication device and service providing server |
| CN102236773A (en) * | 2010-04-30 | 2011-11-09 | 航天信息股份有限公司 | Radio frequency identification (RFID) encryption verification system and method |
| CN106330461B (en) * | 2016-08-30 | 2019-06-18 | 西安小光子网络科技有限公司 | A kind of optical label method for anti-counterfeit and system based on one-way hash function |
-
2016
- 2016-08-30 CN CN201610785929.9A patent/CN106330461B/en active Active
-
2017
- 2017-08-30 WO PCT/CN2017/099635 patent/WO2018041131A1/en active Application Filing
- 2017-08-30 CN CN201780051636.0A patent/CN109792387B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2768091Y (en) * | 2004-12-29 | 2006-03-29 | 王庆旺 | False-proof device for diversified commodities |
| WO2016065861A1 (en) * | 2014-10-31 | 2016-05-06 | 杭州沃朴物联科技有限公司 | System and method for real-time verification of clock synchronisation-based dynamic password anti-counterfeiting tag validity |
| CN104751341A (en) * | 2015-04-14 | 2015-07-01 | 贵州天酒酒业销售有限公司 | Commodity anti-counterfeiting method based on two-dimensional code dynamic passwords |
| CN105184590A (en) * | 2015-09-25 | 2015-12-23 | 三明学院 | Laser on-line efficient etching and product anti-fake traceability system applied to steels |
| CN105701673A (en) * | 2016-02-29 | 2016-06-22 | 依波精品（深圳）有限公司 | Watch anti-fake traceablility method and system based on two-dimensional codes |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018041131A1 (en) * | 2016-08-30 | 2018-03-08 | 陕西外号信息技术有限公司 | Anti-counterfeiting method and system for optical communication device |
| CN109934319A (en) * | 2017-12-19 | 2019-06-25 | 陕西外号信息技术有限公司 | Optical communication apparatus and corresponding method for anti-counterfeit and system |
| CN109934032A (en) * | 2017-12-19 | 2019-06-25 | 陕西外号信息技术有限公司 | Optical communication apparatus and corresponding method for anti-counterfeit and system |
| WO2019120049A1 (en) * | 2017-12-19 | 2019-06-27 | 北京外号信息技术有限公司 | Optical communication apparatus and corresponding anti-counterfeiting method and system |
| CN109934032B (en) * | 2017-12-19 | 2020-07-24 | 陕西外号信息技术有限公司 | Optical communication device and corresponding anti-counterfeiting method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018041131A1 (en) | 2018-03-08 |
| CN109792387B (en) | 2022-09-16 |
| CN106330461B (en) | 2019-06-18 |
| CN109792387A (en) | 2019-05-21 |
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