CN101340284A - Method for finger print data packaging ciphering - Google Patents
Method for finger print data packaging ciphering Download PDFInfo
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- CN101340284A CN101340284A CNA2007100290502A CN200710029050A CN101340284A CN 101340284 A CN101340284 A CN 101340284A CN A2007100290502 A CNA2007100290502 A CN A2007100290502A CN 200710029050 A CN200710029050 A CN 200710029050A CN 101340284 A CN101340284 A CN 101340284A
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Abstract
The invention relates to a packing encryption method of fingerprint data; wherein, firstly, users scan a fingerprint array graph and record indifference full code data of fingerprints, and the data is pre-stored in a fingerprint database; then fingerprint data which is obtained by scanning and waits to be compared is grouped and packed to form a jacket layer and is encrypted layer by layer. The invention provides a concrete method for constituting and generating the fingerprint data: (1) Guide code G is the same group of personalized data collected every time when the fingerprints are scanned; (2) Individual code I is the three groups of data collected randomly every time when the fingerprints are scanned; (3) Square code S is the area calculation value formed by personalized recognition arrays of each group of fingerprints. The data packing encryption mode is that the packing is done in a way of G+(I+(S)); the area value S is packed firstly, I is used for encrypting; then I is packed and G is used for encrypting. The decryption mode includes the steps that after the Guide code G is successfully matched, the Individual code I is decrypted and begin to be matched, and after the I is successfully matched, the Square code S is decrypted; the area values of matched target fingerprint data are calculated and checked, and the matching succeeds after the consistency is confirmed.
Description
[affiliated technical field]
The present invention relates to a kind of method of data packaging ciphering, especially finger print data is carried out packaging ciphering layer by layer, and the method for reverse verification.
[background technology]
Modern society, the Internet has become the communication tool that people use always.Because the Internet is the environment of an opening, has potential safety hazard, therefore how ensureing not intercepted or distort in the data transmission procedure just becomes the important topic that internet security is built.
In the application of the Internet, the identity validation of communication two party has become major issue.The digital authenticating business that has now formed produces with regard to being based on this demand, and this mode has ensured the identity authenticity and the Information Security of communication two party.Current at present digital authenticating is that the mode that adopts the USB plug-in unit to generate serial data forms key in client.But in actual use, this key also has a lot of restrictions, and at first the USB plug-in unit need be carried, and loses easily; Next is that key separates with the people, has by the imitative risk of signing or falsely using; The 3rd is that serial data is subjected to exhaustive attack easily, has hidden danger on the safety, thereby needs regular update, very inconvenient; The 4th is that key needs backup, has trust problem and safety problem.
Because the many disadvantages that the USB plug-in unit exists, people are also constantly seeking new solution.Some mechanisms are just attempting to replace the USB plug-in unit to become the personally identifiable information data with fingerprint recently.
We know that everyone skin lines particularly fingerprint has nothing in common with each other, and that is to say, has the uniqueness characteristics, and constant throughout one's life on pattern, breakpoint and crosspoint.Rely on this uniqueness and stability, we just can be mapped a people with his fingerprint, compare by fingerprint that compares him and the fingerprint of preserving in advance, just can verify his true identity.Here it is fingerprint identification technology.
After having experienced technological accumulation slowly, fingerprint identification technology has been obtained bigger progress in recent years.Novel identification equipment is the research success of silicon wafer transducer and process chip particularly, has promoted the continuous expansion of application.But be applied to wide spectrums such as the Internet along with recognition technology, great change is also taking place in the customer group characteristics, at first be that crowd's quantity becomes huge, be extended to several ten thousand hundreds of thousands even bigger group by former only tens people's single groupuscule, next is that technology cracks with the hidden danger of security attack and also increasing, and these are all had higher requirement to the computational methods of fingerprint recognition.
Fingerprint is more complicated in fact, and is different with artificial treatment, and many biological identification technologies company does not directly store the image of fingerprint.Many digitized algorithms have been produced in each company and research institution thereof for many years.But algorithm for recognizing fingerprint finally all is summed up as the feature that finds and compare fingerprint on finger print image.
The common calculation methods comprises methods such as diffusing spot scan, crestal line analysis, Region Segmentation, coordinate fixed point, central point calculating at present.These computational methods are applicable to the groupuscule coupling use of common safety requirements.But owing to be the linear data of taking the blocks of data analysis to obtain all, if thereby be applied in the magnanimity finger print data and will be restricted.At first require data volume bigger, to guarantee uniqueness; Next is a little less than the linear data anti-attack ability; The 3rd is reversely to calculate, counterfeit by database side or intermediate layer intercepting easily.
The finger print data grouping packaging ciphering scheme that the present invention proposes is exactly the technology of developing for the fail safe that improves finger print data, can effectively solve intercepting and capturing in finger print data generation, transmission, the matching process, distort, falsely use and forgery problem, stopped to have been removed the application risk of finger print data by reverse calculating and the artificial possibility that generates.
[summary of the invention]
Content of the present invention illustrates according to the following steps:
1. the storage fingerprint template is left and taken the initial fingerprint data: adopt finger scan equipment, gather the fingerprint array of figure, record indifference all-key data.Extracting guidance code G (Guide code) uses for coupling.
2. the composition of finger print data to be compared and generation method are:
(1) guidance code G (Guide code): the same group of individuation data of gathering during each scanning fingerprint;
(2) individual character identification code I (Individual code): three groups of data of random acquisition during each scanning fingerprint;
(3) territory area sign indicating number S (Square code): the individual character of every group of fingerprint is discerned the area calculating area value that array (territory) forms.
4. packaging ciphering mode: by G+[I+ (S)] mode pack.To area value S packing, encrypt earlier, to the I packing, encrypt again with G with I.
5. manner of decryption: undertaken by encrypting opposite direction.After guidance code G obtained coupling and passes through, individual character identification code I obtained deciphering and also begins coupling, by back S sign indicating number deciphering,
6. verification: the target fingerprint data of coupling are carried out area value calculate and verification, obtain consistency affirmation back coupling and pass through.
[beneficial effect]
Finger print data grouping packaging ciphering method provided by the present invention has following advantage:
1. fail safe is good: even intercepted and captured in transmission or storing process through the data of packaging ciphering, can not open, guarantee data security;
2. can not be distorted or reverse calculating: because taked area value to encrypt the mode of back binding checking, even thereby former data change is arranged slightly, area value also can change, and former data is played the effect of being kept perfectly property.
[embodiment]
1. programming: fingerprint computational methods of the present invention are by being written as program language.
2. chip manufacturing: the program making of computational methods of the present invention is become little process chip.
3. assembly is complete: this chip and silicon wafer transducer and integrated package are integrated, become complete assemblies.
4. use: the system scan user fingerprints, chip is handled the finger print data packing and the encryption method that obtain by given computational methods.The data set that obtains enters database and deciphers comparison respectively.
Claims (1)
1. method about finger print data packaging ciphering is characterized in that: 1. the storage fingerprint template is fingerprint array scanning figure, and record fingerprint indifference all-key data are extracted guidance code G (Guide code) and used for coupling.2. finger print data to be compared is divided into groups to pack, form jacket layer, successively encrypt.3. the composition of finger print data and generation method are: (1) guidance code G (Guide code): the same group of individuation data of gathering during each scanning fingerprint; (2) individual character identification code I (Individualcode): three groups of data of random acquisition during each scanning fingerprint; (3) territory area sign indicating number S (Square code): the individual character to every group of fingerprint is discerned the regional reference area value that array forms.4. packaging ciphering mode: by G+[I+ (S)] mode pack, to area value S packing, encrypt earlier with I, to the I packing, encrypt again with G.5. manner of decryption: guidance code G obtains coupling pass through after, individual character identification code I obtains deciphering and also begins coupling, by back S sign indicating number deciphering, the target fingerprint data of coupling is carried out area value calculate and verification, obtains consistency and confirms that the back coupling passes through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100290502A CN101340284A (en) | 2007-07-06 | 2007-07-06 | Method for finger print data packaging ciphering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100290502A CN101340284A (en) | 2007-07-06 | 2007-07-06 | Method for finger print data packaging ciphering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101340284A true CN101340284A (en) | 2009-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100290502A Pending CN101340284A (en) | 2007-07-06 | 2007-07-06 | Method for finger print data packaging ciphering |
Country Status (1)
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| CN (1) | CN101340284A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106953724A (en) * | 2015-01-07 | 2017-07-14 | 力旺电子股份有限公司 | The method of dynamic encryption formula fingerprint sensor and dynamic encryption finger print data |
-
2007
- 2007-07-06 CN CNA2007100290502A patent/CN101340284A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106953724A (en) * | 2015-01-07 | 2017-07-14 | 力旺电子股份有限公司 | The method of dynamic encryption formula fingerprint sensor and dynamic encryption finger print data |
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Legal Events
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| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Shi Jianyong Document name: Written notice of preliminary examination of application for patent for invention |
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| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Shi Jianyong Document name: Notification of before Expiration of Request of Examination as to Substance |
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| DD01 | Delivery of document by public notice |
Addressee: Shenzhen Jinglong Digital Technology Co., Ltd. Document name: Notification that Application Deemed to be Withdrawn |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090107 |