CN107147652B - 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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- CN107147652B CN107147652B CN201710352678.XA CN201710352678A CN107147652B CN 107147652 B CN107147652 B CN 107147652B CN 201710352678 A CN201710352678 A CN 201710352678A CN 107147652 B CN107147652 B CN 107147652B
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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 methods of polymorphic identity of the user based on block chain, comprising steps of initialization, typing identity information, identity characteristic are extracted, fusion feature matching.The invention is characterized in that: in conjunction with polymorphic identity fusion authentication method, block chain technology, public encryption system, a set of complete mechanism is provided, to realize safe and 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 pass through the record on decryption block chain, fusion matching is carried out to identity information, finally judge whether user obtains logging in authorization, scheme proposed by the present invention can be realized safe and efficient, convenient and reliable authentication.
Description
Technical field
The present invention relates to identity identification technical field more particularly to a kind of peaces of the polymorphic identity of user based on block chain
Full fusion authentication method.
Background technique
Currently, the identity identifying technology bring limitation of single security mechanism is also more and more obvious, multiple safe mechanism
Integration application is becoming new trend.This is because the authentication techniques (such as account number cipher login) based on monofactor, hold very much
Easily there is the risk for being counterfeited, being stolen, the safety of system is not only improved using the maltilevel security factor, certification can also be improved
Reliability.Even if user lacks the element of a certain authentication, he still can be logged in by other identity informations.This
Outside, lack a set of perfect mechanism at present, user is allowed to be free to select the identity information of different shape for verifying, and
Above- mentioned information are integrated, analyze and are matched by unified model storage and peace, intelligentized algorithm.Most of all, at present
There are great security risks at 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.
Block chain is a kind of disclosure, transparent national consensus, the novel foundation facility controlled and shared altogether, has distributed number
According to storage, it decentralization, can not distort, can be traced, the features such as trusted.Although the transparency and subscriber identity information of block chain
The special conflict mutually of privacy, but we can realize subscriber identity information in conjunction with public encryption system and block chain technology
Safety and reliable memory.By being recorded in block chain after encrypting subscriber identity information, Encryption Algorithm can search in conjunction with public key,
We can be realized the safe and efficient and reliable storage of subscriber identity information and use.
Summary 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 information are stolen, and so as to cause the low problem of the safety in user authentication, reliability, the present invention provides one
The safety fusion authentication method of user polymorphic identity of the kind based on block chain.
The technical solution adopted by the invention is as follows:
A kind of safety fusion authentication method of the polymorphic identity of user based on block chain, comprising the following steps:
(1) it initializes, generates the public key and private key of server and trusted node, generate the open parameter and service of server
The public algorithm of device, wherein open parameter includes: the quantity (m) of supported different shape identity, each identity form
The quantity (n) of characteristic component, identity characteristic weight accounting, similarity threshold etc., public algorithm include: that hash function, matrix become
Scaling method, identity characteristic extraction algorithm, identity characteristic matching algorithm etc., concrete meaning is described during narration；
(2) with the identity information of user orientation server input user account and different shape, in the identity information of different shape
Including user identity title；
Then the identity information for the different shape that server inputs user carries out feature extraction respectively, obtains identity spy
The each identity characteristic extracted, is calculated the identity characteristic vector of uniform length by sign by disclosed hash function, then
Matrixing is carried out to identity characteristic vector by disclosed matrixing algorithm, identity characteristic matrix is obtained, it is special to calculate identity
Levy the root of matrix；
(3) it is based on typical public key encryption algorithm, the identity characteristic matrix in step (2) is encrypted, identity is obtained
Eigenmatrix ciphertext；
It can search for Encryption Algorithm based on typical public key, user identity name be referred to as object, uses the public key of server
User identity title is encrypted and obtains searchable cryptograph；
(4) server is respectively to the root of user account, identity characteristic matrix, identity characteristic matrix ciphertext and searchable cryptograph
Private key signature is carried out, and is sent to trusted node；
(5) trusted node is retrieved on block chain according to user account, if user first logs into, trusted node is user
Issue public key, create the identity information of original block record user's different shape and by user account, client public key, timestamp,
Original block is written in root, identity characteristic matrix ciphertext and the searchable cryptograph of identity characteristic matrix, and broadcasts in a network；It is first
It is special to obtain original identity after original identity information transformation for the identity information of the different shape of secondary login user, that is, original identity information
Levy matrix, ciphertext, that is, original identity characteristic matrix ciphertext of original identity characteristic matrix；Otherwise, step (6) are executed；
(6) fusion feature matching is carried out to the identity information of user's different shape and similarity judges.
A kind of safety fusion authentication method of the polymorphic identity of user based on block chain, in step (1), generates
Open parameter include: the different shape identity that identity characteristic weight accounting, similarity threshold, server are supported quantity,
The quantity of the characteristic component of each identity form, the public algorithm of generation include: disclosed hash algorithm, identity characteristic extraction
Algorithm, identity characteristic matching algorithm.
A kind of safety fusion authentication method of the polymorphic identity of the user based on block chain, in step (2), feature
It extracts and matrixing specific steps are as follows:
(21) server for user input different shape identity information, according to step (1) generate public algorithm,
Identity characteristic is extracted, each identity characteristic extracted is calculated using disclosed hash algorithm, obtains identity calculated
The corresponding feature vector of feature, the corresponding feature vector of identity characteristic calculated are made of n component；
(22) feature vector for the unified format that server obtains step (21) is according to disclosed matrixing algorithm groups
At eigenmatrix.
A kind of polymorphic identity of user based on block chain safety fusion authentication method, step (6) it is specific
Step are as follows:
(61) original identity characteristic matrix ciphertext is sent to server by trusted node, oneself private key solution of server
The original identity characteristic matrix of user is obtained after close, and extracts the original body of user one by one from the original identity characteristic matrix of user
Feature 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) it is special to compare each of step (62) identity according to disclosed Feature Correspondence Algorithm Match () for server
The similarity of each original identity characteristic vector, obtains the comparison of each identity characteristic vector in sign vector, step (61)
Similarity, the alignment similarity calculation formula of each identity characteristic vector are as follows:
r1=Match (A1、A′1)、…、rm=Match (Am、A′m)；
Wherein r1…rmFor the alignment similarity of each identity characteristic vector；
(64) server calculates all identity characteristics and merges matching similarity, fusion feature matching similarity calculation formula
Are as follows:
R=ω1r1+…+ωnrm,
Wherein, ω1,…,ωnRepresent the weight accounting of different shape identity characteristic；
(65) server, if R > V, authenticates success by R compared with given similarity threshold V, and authorization logs in, otherwise,
It returns to failure identifier and terminates.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
One, it in the solution of the present invention, is disclosed based on block chain, transparent national consensus, the novel foundation controlled and shared altogether
Facility has many characteristics, such as Distributed Storage, decentralization, can not distort, can be traced, trusted, by by user identity
Information encryption after be recorded in block chain, can search for Encryption Algorithm in conjunction with public key, realize subscriber identity information it is safe and efficient and
Reliable storage and use.
Two, due to being authenticated using the identity information of variform to client, do not have to worry a certain identity information
Missing and caused by the problem of can not authenticating.
Three, due in the present solution, can recorde multiple and different form identity informations of the same user in block chain, because
This user can freely select the identity information of different shape for verifying, and store and pacify, intelligence by unified model
The algorithm of energyization is integrated above- mentioned information, analyzes and is matched.
Detailed description of the invention
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 the explanatory diagram extracted for identity characteristic in the present invention with eigenmatrix；
Fig. 3 is that this is the block link composition that identity characteristic information is recorded in invention；
Specific embodiment
All features disclosed in this specification can be with any other than mutually exclusive feature and/or step
Mode combines.
It elaborates below with reference to Fig. 1, Fig. 2, Fig. 3 to the present invention.
A kind of safety fusion authentication method of the polymorphic identity of user based on block chain, includes the following steps:
Initialization generates the public key and private key of server and trusted node, generates the open parameter and server of server
Public algorithm, wherein disclosing parameter includes: identity characteristic weight accounting, similarity threshold, the different shape identity supported
Quantity, each identity form characteristic component quantity, the public algorithm of generation includes: disclosed hash algorithm, identity
Feature extraction algorithm, identity characteristic matching algorithm.Similarity threshold needs similarity to be achieved for determining that user logins successfully
Threshold value, wherein identity characteristic weight 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 (include: safe lane, safe equipment, such as: POS machine) 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 of n characteristic component；The identity information of different shape
In include user identity title；
For example, for facial image identity information, the coordinate of record human face distribution, and be calculated by n component
Identity characteristic vector is formed, 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 form 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 feature vectors are obtained identity characteristic matrix according to disclosed matrixing algorithm by server, and are calculated current
The root of identity characteristic matrix, identity characteristic matrix are the matrixes being made of the multiple identity characteristic vectors of user；
It should be pointed out that user is set in advance with m different shape by open parameter in initialization procedure in we
The identity of identity, each form is made of an identity characteristic vector with n characteristic component, we can simply recognize
Are as follows: identity characteristic matrix is the matrix of a m × n, and wherein each element represents a kind of corresponding feature of form identity information
Component；
Then, server is based on public key encryption algorithm and obtains identity with the public key encryption user identity eigenmatrix of oneself
Eigenmatrix ciphertext；Public key encryption algorithm includes but is not limited to famous RSA public key encryption algorithm.RSA public key encryption algorithm
Feature is: sender is encrypted using the public key of recipient, and ciphertext is transmitted in open channel, and recipient is after receiving ciphertext
It is decrypted using the key of oneself.
Server is based on public key again can search for Encryption Algorithm, and user identity name is referred to as keyword, uses the public affairs of oneself
Key encrypts it and obtains keyword searchable cryptograph；It includes but is not limited to Boneh et al. that public key, which can search for Encryption Algorithm,
The PEKS public key of proposition can search for Encryption Algorithm.It is that user identity name is referred to as object that PEKS public key, which can search for Encryption Algorithm,
User identity title is encrypted using the public key of oneself and obtains searchable cryptograph；Here, public key can search for Encryption Algorithm
The characteristics of be: will after the keyword public key encryption of recipient and ciphertext send jointly to server storage, recipient use from
Oneself public key and keyword generates trapdoor and is sent to server, and server is matched to 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 being 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 to protect the identity information of user's various forms to mustn't go to leakage, and can search for Encryption Algorithm using public key is in order to using
Identifier of the ciphertext of family identity name as user characteristics matrix ciphertext, in order to inquire, it is obvious that by user identity title
Plaintext be recorded on block chain and be easy leakage privacy, and Encryption Algorithm can search for using public key, can allow trusted node and its
What in the case where his all users are in plain text do not know user identity title, safety and efficient inquiry and transmission log
Identity information on block chain, thus one, subscriber identity information has obtained comprehensive secret protection, while again convenient for can
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 on block chain according to user account, if the user logs in for the first time, i.e., there is no appoint
What records the block chain of the user identity feature, and trusted node is that user issues public key, while creating original block (first first
A block), for recording the initial informations such as user account, creation time, then, trusted node is successively polymorphic by user user
Identity information is recorded in a block chain, and by user account, client public key, the root of identity characteristic matrix, timestamp, identity
Original block is written in eigenmatrix ciphertext and searchable cryptograph, and broadcasts in a network；First log into the different shape of user
Identity information, that is, original identity information, obtain original identity characteristic matrix, original identity characteristic after the transformation of original identity information
The ciphertext of matrix, that is, original identity characteristic matrix ciphertext；
If user is chartered user, the block chain for recording its identity characteristic is had existed.Server
It can search for Encryption Algorithm based on public key, with oneself private key and user identity title, generation can search for trapdoor, and being sent to can
Believe node, trusted node is retrieved according to trapdoor, if retrieval is created less than the block comprising the new user identity title is arrived
A block is built, and user account, client public key, the root of newest identity characteristic matrix, timestamp, newest identity is special
The searchable cryptograph of sign matrix ciphertext and identity name is written in new block, and broadcasts in a network；
Otherwise, the block comprising the user identity name information that trusted node retrieves, 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 mentions
Take out the original identity characteristic vector of user's different shape: A1、…、Am, original identity characteristic, that is, user steps on for the first time here
The identity characteristic of typing when 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 (), input the identity characteristic vector A ' extracted respectively1、…、A′mWith original identity vector
A1、…、Am, m represents the quantity of different shape identity here, the alignment similarity of each identity characteristic is finally calculated, 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, for server with regard to disclosed Feature Correspondence Algorithm, the identity that the trusted node after user and decryption is sent back to is special
Sign is compared, and matching similarity is calculated:
R=ω1r1+…+ωnrm,
Wherein, ω1,…,ωnRepresent the weight accounting (ω of respective identity feature1,…,ωnIt is set according to open parameter
It is fixed), R compared with similarity threshold V, if R > V, is authenticated success by server, and authorization logs in, and 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 and efficient, convenient and reliable user identity authentication.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Belong to those skilled in the art in the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of, should all cover
Within protection scope of the present invention.
Claims (3)
1. a kind of safety fusion authentication method of the polymorphic identity of user based on block chain, which is characterized in that including following step
It is rapid:
(1) it initializes, generates the public key and private key of 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, includes in the identity information of different shape
User identity title；
Then the identity information for the different shape that server inputs user carries out feature extraction respectively, obtains identity characteristic, will
The identity characteristic vector of uniform length is calculated by disclosed hash function for each identity characteristic extracted, 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) it is based on public key encryption algorithm, the identity characteristic matrix in step (2) is encrypted, it is close to obtain identity characteristic matrix
Text；
It can search for Encryption Algorithm based on public key, user identity name be referred to as object, using the public key of server to user identity
Title is encrypted and obtains searchable cryptograph；
(4) server respectively carries out the root of user account, identity characteristic matrix, identity characteristic matrix ciphertext and searchable cryptograph
Private key signature, and it is sent to trusted node；
(5) trusted node is retrieved on block chain according to user account, 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, identity
Original block is written in root, identity characteristic matrix ciphertext and the searchable cryptograph of eigenmatrix, and broadcasts in a network；It steps on for the first time
The i.e. original identity information of identity information of the different shape at family is employed, obtains original identity characteristic square after original identity information transformation
Battle array, ciphertext, that is, original identity characteristic matrix ciphertext of original identity characteristic matrix；Otherwise, step (6) are executed；
(6) fusion feature matching is carried out to the identity information of user's different shape and similarity judges；
The specific steps of step (6) are as follows:
(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 extracts the original identity spy of user one by one from the original identity characteristic matrix of user
Levy 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 represents user
The quantity of different shape identity information；
(63) server is according to disclosed Feature Correspondence Algorithm Match (), compare each of step (62) identity characteristic to
The similarity of each original identity characteristic vector, the comparison for obtaining each identity characteristic vector are similar in amount, step (61)
Degree, the alignment similarity calculation formula of each identity characteristic vector are as follows:
r1=Match (A1、A′1)、…、rm=Match (Am、A′m)；
Wherein r1…rmFor the alignment similarity of each identity characteristic vector；
(64) server calculates all identity characteristics and merges matching similarity, fusion feature matching similarity calculation formula are as follows:
R=ω1r1+…+ωnrm,
Wherein, ω1,…,ωnRepresent the weight accounting of different shape identity characteristic；
(65) server, if R > V, authenticates success by R compared with given similarity threshold V, and authorization logs in, and otherwise, returns
Failure identifier simultaneously terminates.
2. a kind of safety fusion authentication method of the polymorphic identity of user based on block chain according to claim 1,
It is characterized in that, in step (1), the open parameter of generation includes: that identity characteristic weight accounting, similarity threshold, server are propped up
The quantity of the characteristic component of the quantity for the different shape identity held, each identity form, the public algorithm of generation include: disclosure
Hash algorithm, identity characteristic extraction algorithm, identity characteristic matching algorithm.
3. a kind of safety fusion authentication method of the polymorphic identity of user based on block chain as claimed in claim 2, special
Sign is, in step (2), feature extraction and matrixing specific steps are as follows:
(21) server is extracted for the identity information of the different shape of user's input according to the public algorithm that step (1) generates
Identity characteristic out is calculated each identity characteristic extracted using disclosed hash algorithm, obtains identity characteristic calculated
Corresponding feature vector, the corresponding feature vector of identity characteristic calculated are made of n component；
(22) feature vector for the unified format that server obtains step (21) forms special according to disclosed matrixing algorithm
Levy matrix.
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