CN107147652A - A kind of safety fusion authentication method of the polymorphic identity of user based on block chain - Google Patents
A kind of safety fusion authentication method of the polymorphic identity of user based on block chain Download PDFInfo
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- CN107147652A CN107147652A CN201710352678.XA CN201710352678A CN107147652A CN 107147652 A CN107147652 A CN 107147652A CN 201710352678 A CN201710352678 A CN 201710352678A CN 107147652 A CN107147652 A CN 107147652A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/0442—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply asymmetric encryption, i.e. different keys for encryption and decryption
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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
- 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
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Abstract
The invention discloses a kind of safety fusion authentication method of polymorphic identity of the user based on block chain, including step：Initialization, typing identity information, identity characteristic are extracted, fusion feature matching.The invention is characterized in that：With reference to polymorphic identity fusion authentication method, block chain technology, public encryption system there is provided a set of complete mechanism, to realize safe efficient, convenient and reliable authentication.Wherein, user can carry out typing with self selective identity information, server carries out feature extraction to typing information, and by decrypting the record on block chain, fusion matching is carried out to identity information, final to judge whether user obtains logging in mandate, scheme proposed by the present invention can realize safe efficient, convenient and reliable authentication.
Description
Technical field
The present invention relates to the peace of identity identification technical field, more particularly to a kind of polymorphic identity of user based on block chain
Full fusion authentication method.
Background technology
At present, the limitation that the identity identifying technology of single security mechanism is brought is also more and more obvious, multiple safe mechanism
Integrating application turns into new trend.This is due to the authentication techniques (such as account number cipher login) based on monofactor, is held very much
Easily there is the risk for being counterfeited, being stolen, the security of system is not only improved using the maltilevel security factor, certification can also be improved
Reliability.Even if user lacks the key element of a certain authentication, he still can be logged in by other identity informations.This
Outside, a set of perfect mechanism is lacked at present, allows user to be free to select the identity information of different shape for checking, and
Above- mentioned information is integrated, analyze and matched by unified model storage and peace, intelligentized algorithm.Most of all, at present
There is great potential safety hazard in a certain center that is stored in of identity characteristic information centralization.Once data center is broken, user
Identity information can be compromised and destroy, this is a kind of catastrophic consequence.
The novel foundation facility that block chain is a kind of disclosure, transparent national consensus, controls and share altogether, with distributed number
According to storage, decentralization, can not distort, can review, the feature such as trusted.Although the transparency and subscriber identity information of block chain
The special conflict mutually of privacy, but we can combine public encryption system and block chain technology, realize subscriber identity information
Safety and reliable memory.By being recorded after subscriber identity information is encrypted in block chain, AES is can search for reference to public key,
We can realize the safe efficient and reliable storage of subscriber identity information and use.
The content of the invention
It is an object of the invention to：It is single for the elements of certificate of above-mentioned existing monofactor authentication techniques, it is easy to go out
Now personation, user profile are stolen, so as to cause the security in user authentication, the problem of reliability is low, the present invention provides one
Plant the safety fusion authentication method of the polymorphic identity of user based on block chain.
The technical solution adopted by the present invention is as follows：
A kind of safety fusion authentication method of the polymorphic identity of user based on block chain, comprises the following steps：
(1) initialize, the public key and private key of generation server and trusted node, generate open parameter and the service of server
The public algorithm of device, wherein, open parameter includes：The quantity (m) of the different shape identity supported, each identity form
Quantity (n), identity characteristic weights accounting, similarity threshold of characteristic component etc., public algorithm includes：Hash function, matrix become
Scaling method, identity characteristic extraction algorithm, identity characteristic matching algorithm etc., concrete meaning is described during narration；
(2) inputted with user orientation server in the identity information of user account and different shape, the identity information of different shape
Including user identity title；
Then the identity information for the different shape that server is inputted to user carries out feature extraction respectively, obtains identity special
Levy, each identity characteristic extracted is calculated to the identity characteristic vector for obtaining uniform length by disclosed hash function, then
Matrixing is carried out to identity characteristic vector by disclosed matrixing algorithm, identity characteristic matrix is obtained, calculates identity special
Levy the root of matrix；
(3) typical public key encryption algorithm is based on, the identity characteristic matrix in step (2) is encrypted, identity is obtained
Eigenmatrix ciphertext；
AES can search for based on typical public key, user identity name is referred to as object, the public key of server is used
User identity title is encrypted and searchable cryptograph is obtained；
(4) server is respectively to user account, the root of identity characteristic matrix, eigenmatrix ciphertext and searchable cryptograph with entering
Row private key signature, and it is sent to trusted node；
(5) trusted node is retrieved according to user account on block chain, if user first logs into, trusted node is user
Issue public key, create original block record user's different shape identity information and by user account, client public key, timestamp,
Root, eigenmatrix ciphertext and the original block of searchable cryptograph write-in of eigenmatrix, and broadcast in a network；First log into use
The identity information of the different shape at family is original identity information, and original identity characteristic matrix is obtained after original identity information conversion,
The ciphertext of original identity characteristic matrix is original identity characteristic matrix ciphertext；Otherwise, step (6) is performed；
(6) fusion feature matching is carried out to the identity information of user's different shape and similarity judges.
In a kind of safety fusion authentication method of the polymorphic identity of described user based on block chain, step (1), generation
Open parameter include：The quantity for the different shape identity that identity characteristic weights accounting, similarity threshold, server are supported,
The quantity of the characteristic component of each identity form, the public algorithm of generation includes：Disclosed hash algorithm, identity characteristic are extracted
Algorithm, identity characteristic matching algorithm.
In a kind of safety fusion authentication method of the polymorphic identity of described user based on block chain, step (2), feature
Extract and eigentransformation is concretely comprised the following steps：
(21) identity information for the different shape that server is inputted for user, the public algorithm generated according to step (1),
Identity characteristic is extracted, each identity characteristic extracted is calculated using disclosed hash algorithm, calculated identity is obtained
The corresponding characteristic vector of feature, the corresponding characteristic vector of identity characteristic calculated is made up of n component；
(22) characteristic vector for the unified form that server obtains step (21) is according to disclosed matrixing algorithm groups
Into eigenmatrix.
A kind of polymorphic identity of described user based on block chain safety fusion authentication method, step (6) it is specific
Step is：
(61) original identity characteristic matrix ciphertext is sent to server by trusted node, and server is with the private key solution of oneself
The original identity characteristic matrix of user is obtained after close, and extracts from the original identity characteristic matrix of user the original body of user one by one
Part characteristic vector A1、…、Am；Wherein, m represents the quantity of user's different shape identity information；
(62) server extracts identity characteristic vector A ' from the identity information of user's typing1、…、A′m, wherein, m is represented
The quantity of user's different shape identity information；
(63) server compares each in step (62), step (63) according to disclosed Feature Correspondence Algorithm Match ()
The similarity of identity characteristic, obtains the alignment similarity of each identity characteristic, the alignment similarity meter of each identity characteristic
Calculating formula is：
r1=Match (A1、A′1)、…、rm=Match (Am、A′m)；
Wherein r1…rmFor the alignment similarity of each identity characteristic；
(64) server calculates all identity characteristic fusion matching similarities, fusion feature matching similarity calculation formula
For：
R=ω1r1+…+ωnrm,
Wherein, ω1,…,ωnRepresent the weights accounting of different shape identity characteristic；
(65) server is compared R with given similarity threshold V, if R>V, then certification success, authorizes and logs in, otherwise,
Return to failure identifier and terminate.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
First, in the solution of the present invention, disclosed based on block chain, transparent national consensus, the novel foundation controlled and shared altogether
Facility, with Distributed Storage, decentralization, can not distort, can review, the feature such as trusted, by by user identity
Information encryption after record in block chain, can search for AES with reference to public key, realize subscriber identity information it is safe efficient and
Reliably store and use.
2nd, due to being authenticated using the identity information of variform to client, therefore, without worrying a certain identity information
Lack and cause the problem of can not authenticating.
3rd, due in this programme, in block chain, multiple different shape identity informations of same user can be recorded, because
This user can freely select the identity information of different shape for checking, and be stored and peace, intelligence by unified model
The algorithm of energyization is integrated to above- mentioned information, analyzes and matched.
Brief description of the drawings
Fig. 1 is a kind of flow chart of the safety fusion authentication method of the polymorphic identity of user based on block chain of the invention；
Fig. 2 is that the explanation figure with eigenmatrix is extracted for identity characteristic in the present invention；
Fig. 3 is the block link composition that this is record identity characteristic information in invention；
Embodiment
All features disclosed in this specification, can be with any in addition to mutually exclusive feature and/or step
Mode is combined.
The present invention is elaborated with reference to Fig. 1, Fig. 2, Fig. 3.
A kind of safety fusion authentication method of the polymorphic identity of user based on block chain, comprises the following steps：
The public key and private key of initialization, generation server and trusted node, generate the open parameter and server of server
Public algorithm, parameter includes disclosed in it：Identity characteristic weights accounting, similarity threshold, the different shape identity supported
Quantity, the quantity of the characteristic component of each identity form, the public algorithm of generation includes：Disclosed hash algorithm, identity
Feature extraction algorithm, identity characteristic matching algorithm.Similarity threshold is used to determine that User logs in successfully needs the similarity reached
Threshold value, wherein, identity characteristic weights accounting is different shape identity information percentage in verification process, can be according to reality
Border application environment is freely set；
User by secure way (including：Safe lane, safe equipment, such as：POS etc.) by user account and (one
Kind or variform) subscriber identity information inputs to server, subscriber identity information includes but is not limited to：Password, fingerprint, rainbow
Film, face, sound source.
The identity information for the different shape that server is inputted for user, respectively according to corresponding public algorithm, to difference
The identity information of form carries out identity characteristic extraction, and the identity characteristic that the identity information of every kind of different shape is extracted according to
Disclosed hash algorithm unified calculation, obtains the identity characteristic vector being made up of n characteristic component；The identity information of different shape
Include user identity title；
For example, being obtained for facial image identity information, the coordinate of record human face distribution, and calculating by n component
Identity characteristic vector is constituted, such as：A1={ a1,1,…,a1,n, here, a1,iRepresent the feature point in a face feature vector
Amount；
For example, for ordinary cryptographic, according to disclosed hash algorithm obtain from n password component constitute try feature to
Amount, such as：A2={ a2,1,…,a2,n, in addition, for the identity information of other different shapes, such as iris, fingerprint, method class
Seemingly；
These characteristic vectors are obtained identity characteristic matrix by server according to disclosed matrixing algorithm, and calculate current
The root of identity characteristic matrix, identity characteristic matrix is a matrix being made up of the multiple identity characteristic vectors of user；
It is pointed out that we set user in advance in initialization procedure by open parameter has m different shape
Identity, the identity of each form is made up of an identity characteristic vector with n characteristic component, and we can simply recognize
For：Identity characteristic matrix is m × n matrix, and each of which element represents a kind of corresponding feature of form identity information
Component；
Then, server is based on public key encryption algorithm, with the public key encryption user identity eigenmatrix of oneself, obtains identity
Eigenmatrix ciphertext；Public key encryption algorithm includes but is not limited to famous RSA public key encryption algorithms.RSA public key encryption algorithms
Feature is：Sender is encrypted using the public key of recipient, and ciphertext is transmitted in open channel, and recipient is after ciphertext is received
It is decrypted using the key of oneself.
Server can search for AES based on public key again, and user identity name is referred to as into keyword, the public affairs of oneself are used
Key is encrypted to it and obtains keyword searchable cryptograph；Public key can search for AES and include but is not limited to Boneh et al.
The PEKS public keys of proposition can search for AES.It is that user identity name is referred to as into object that PEKS public keys, which can search for AES,
User identity title is encrypted using the public key of oneself and searchable cryptograph is obtained；Here, public key can search for AES
The characteristics of be：Keyword is used certainly with server storage, recipient is sent jointly to after the public key encryption of recipient with ciphertext
Oneself public key and keyword generation trapdoor is sent to server, and server matches the ciphertext comprising the keyword by trapdoor,
And send back recipient；
Server by user account, the root of current identity characteristic matrix, identity characteristic matrix ciphertext and can search for close respectively
Text sends jointly to trusted node after carrying out private key signature, is responsible for recorded in block chain by trusted node；
It should be noted that we are recorded on block chain after being encrypted using public key algorithm to user identity eigenmatrix,
It is that, in order to protect the identity information of the various forms of user to mustn't go to leakage, and can search for AES using public key is in order to using
The ciphertext of family identity name as user characteristics matrix ciphertext identifier, in order to inquire about, it is obvious that by user identity title
Plaintext record on block chain easily leakage privacy, and AES can search for using public key, can allow trusted node and its
His all users do not know user identity title what is in plain text in the case of, safety and efficient inquiry and transmission log
Identity information on block chain, thus one, subscriber identity information has obtained comprehensive secret protection, while be easy to can again
Retrieval；
Then, the identity characteristic matrix ciphertext that trusted node is sent according to server, holds according to the different situations of user
Row is as follows：
Trusted node is retrieved according to user account on block chain, if the user logs in first, i.e., in the absence of appoint
What records the block chain of the user identity feature, and trusted node issues public key for user first, while creating original block (first
Individual block), for recording the initial informations such as user account, creation time, then, trusted node is polymorphic by user user successively
Identity information is recorded in a block chain, and by user account, client public key, the root of eigenmatrix, timestamp, eigenmatrix
Ciphertext and the original block of searchable cryptograph write-in, and broadcast in a network；First log into the identity letter of the different shape of user
Breath is original identity information, obtains original identity characteristic matrix after the conversion of original identity information, original identity characteristic matrix it is close
Text is original identity characteristic matrix ciphertext；
If user is chartered user, in the presence of a block chain for recording its identity characteristic.Server
AES can search for based on public key, with oneself private key and user identity title, generation can search for trapdoor, and be sent to can
Node is believed, trusted node is retrieved according to trapdoor, if retrieval is created less than to the block for including the new user identity title
A block is built, and user account, client public key, the root of newest eigenmatrix, timestamp, newest eigenmatrix is close
Text and the searchable cryptograph of identity name are write in new block, and are broadcasted in a network；
Otherwise, trusted node is retrieved the block for including the user identity name information, and will be recorded on the block
Newest identity characteristic matrix ciphertext returns to server, and server decrypts matrix ciphertext with the private key of oneself, and therefrom carries
Take out the original identity characteristic vector of user's different shape：A1、…、Am, original identity characteristic is that user steps in first time here
The identity characteristic of typing during land；
Server extracts identity characteristic vector A ' from the identity information of user's typing1、…、A′m, server is according to open
Feature Correspondence Algorithm Match (), the identity characteristic vector A ' extracted is inputted respectively1、…、A′mWith original identity vector
A1、…、Am, here m represent the quantity of different shape identity, it is final to calculate the alignment similarity for obtaining each identity characteristic, often
The calculating formula of similarity of one identity characteristic is as follows：
r1=Match (A1、A′1)、…、rm=Match (Am、A′ m)；
Wherein, r1…rmFor the alignment similarity of each identity characteristic.
Finally, server is with regard to disclosed Feature Correspondence Algorithm, and the identity that the trusted node after user and decryption is beamed back is special
Levy and be compared, and calculating obtains matching similarity：
R=ω1r1+…+ωnrn,
Wherein, ω1,…,ωnRepresent the weights accounting (ω of respective identity feature1,…,ωnSet according to open parameter
It is fixed), server is compared R with similarity threshold V, if R>V, then certification success, authorizes and logs in, otherwise, returns to failure identifier
And terminate.
We are devised a set of by the fusion authentication method, block chain technology and public key encryption algorithm of polymorphic identity
Complete system, to realize safe efficient, convenient and reliable authenticating user identification.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Belong to those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in should all be covered
Within protection scope of the present invention.
Claims (4)
1. the safety fusion authentication method of the polymorphic identity of a kind of user based on block chain, it is characterised in that including following step
Suddenly：
(1) initialize, the public key and private key of generation server and trusted node, generate the open parameter and server of server
Public algorithm；
(2) identity information of user account and different shape is inputted with user orientation server, the identity information of different shape includes
User identity title；
Then the identity information for the different shape that server is inputted to user carries out feature extraction respectively, obtains identity characteristic, will
The each identity characteristic extracted calculates the identity characteristic vector for obtaining uniform length by disclosed hash function, then passes through public affairs
The matrixing algorithm opened carries out matrixing to identity characteristic vector, obtains identity characteristic matrix, calculates identity characteristic matrix
Root；
(3) typical public key encryption algorithm is based on, the identity characteristic matrix in step (2) is encrypted, identity characteristic is obtained
Matrix ciphertext；
AES can search for based on typical public key, by user identity name be referred to as object, using server public key to
Family identity name is encrypted and obtains searchable cryptograph；
(4) server is respectively to user account, the root of identity characteristic matrix, eigenmatrix ciphertext and searchable cryptograph with carrying out private
Key is signed, and is sent to trusted node；
(5) trusted node is retrieved according to user account on block chain, if user first logs into, trusted node is issued for user
Public key, creates the identity information of original block record user's different shape and by user account, client public key, timestamp, feature
Root, eigenmatrix ciphertext and the original block of searchable cryptograph write-in of matrix, and broadcast in a network；First log into user's
The identity information of different shape is original identity information, and original identity characteristic matrix is obtained after original identity information conversion, original
The ciphertext of identity characteristic matrix is original identity characteristic matrix ciphertext；Otherwise, step (6) is performed；
(6) fusion feature matching is carried out to the identity information of user's different shape and similarity judges.
2. a kind of safety fusion authentication method of the polymorphic identity of user based on block chain according to claim 1, its
It is characterised by, in step (1), the open parameter of generation includes：Identity characteristic weights accounting, similarity threshold, server are propped up
The quantity of the different shape identity held, the quantity of the characteristic component of each identity form, the public algorithm of generation includes：It is public
Hash algorithm, identity characteristic extraction algorithm, the identity characteristic matching algorithm opened.
3. a kind of safety fusion authentication method of the polymorphic identity of user based on block chain as claimed in claim 2, it is special
Levy and be, in step (2), feature extraction and eigentransformation are concretely comprised the following steps：
(21) identity information for the different shape that server is inputted for user, the public algorithm generated according to step (1) is extracted
Go out identity characteristic, each identity characteristic extracted is calculated using disclosed hash algorithm, calculated identity characteristic is obtained
Corresponding characteristic vector, the corresponding characteristic vector of identity characteristic calculated is made up of n component；
(22) characteristic vector for the unified form that server obtains step (21) constitutes special according to disclosed matrixing algorithm
Levy matrix.
4. a kind of safety fusion authentication method of the polymorphic identity of user based on block chain as claimed in claim 1, it is special
Levy and be, step (6) are concretely comprised the following steps：
(61) original identity characteristic matrix ciphertext is sent to server by trusted node, after server is decrypted with the private key of oneself
The original identity characteristic matrix of user is obtained, and it is special to extract from the original identity characteristic matrix of user the original identity of user one by one
Levy vectorial A1、…、Am；Wherein, m represents the quantity of user's different shape identity information；
(62) server extracts identity characteristic vector A ' from the identity information of user's typing1、…、A′m, wherein, m represents user
The quantity of different shape identity information；
(63) server compares each identity in step (62), step (63) according to disclosed Feature Correspondence Algorithm Match ()
The similarity of feature, obtains the alignment similarity of each identity characteristic, and the alignment similarity of each identity characteristic calculates public
Formula is：
r1=Match (A1、A′1)、…、rm=Match (Am、A′m)；
Wherein r1…rmFor the alignment similarity of each identity characteristic；
(64) server calculates all identity characteristic fusion matching similarities, and fusion feature matching similarity calculation formula is：
R=ω1r1+…+ωnrm,
Wherein, ω1,…,ωnRepresent the weights accounting of different shape identity characteristic；
(65) server is compared R with given similarity threshold V, if R>V, then certification success, authorizes and logs in, otherwise, returns
Failure identifier simultaneously terminates.
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