CN110224808A - Bank data sharing method and relevant device based on block chain - Google Patents
Bank data sharing method and relevant device based on block chain Download PDFInfo
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Abstract
This application involves block chain technical fields, more particularly to a kind of bank data sharing method and relevant device based on block chain, it include: the common recognition node established between multiple banking terminals, several blocks are established according to the transaction results of the common recognition node, form a block chain after connecting several blocks；The block key for obtaining the either block on the block chain obtains ciphertext transaction data after being encrypted according to the transaction data generated in block described in the block key pair；Receive the data sharing request that any banking terminal on the block chain issues, the data sharing is sent to request to each block, the ciphertext transaction data that each block generates is received, the banking terminal for issuing the data sharing request will be sent to after ciphertext transaction data decryption.The application effectively realizes the data sharing between different bank terminal, to improve competitiveness of the Small-Medium Banks in finance activities.
Description
Technical field
This application involves block chain technical field more particularly to a kind of bank data sharing methods and phase based on block chain
Close equipment.
Background technique
Small and medium-sized commercial banks refer to work, agriculture, in, build, national business bank, region other than big business bank, Bank of Communications five
Property joint-stock commercial bank and municipal commercial bank.These Small-Medium Banks are flexible city's field sensitivity and higher financial service
Efficiency supports the development of a large amount of medium-sized and small enterprises and private economy, promotes economic growth, second is that by the change of financial system with
Innovation, advances the commercialization of China's Financial industry.
Currently, Small-Medium Banks there is the data of each Small-Medium Banks in development process cannot be effectively reciprocal, cause
The business of pet bank is restricted.Meanwhile Small-Medium Banks due to own strength it is limited, cause protecting information safety level lower,
Information leakage is easily caused, the selection for selecting Small-Medium Banks as finance activities of being unwilling so as to cause user.
Summary of the invention
Based on this, it is necessary to for the problem that business datum between current Small-Medium Banks cannot effectively be shared, provide one kind
Bank data sharing method and relevant device based on block chain.
A kind of bank data sharing method based on block chain, includes the following steps:
The common recognition node between multiple banking terminals is established, establishes several areas according to the transaction results of the common recognition node
Block forms a block chain after connecting several blocks；
The block key for obtaining the either block on the block chain is generated according in block described in the block key pair
Transaction data encrypted after obtain ciphertext transaction data；
The data sharing request that any banking terminal on the block chain issues is received, the data sharing is sent
Request receives the ciphertext transaction data that each block generates, the ciphertext transaction data is decrypted to each block
It is sent to the banking terminal for issuing the data sharing request afterwards；
Wherein, the block key for obtaining the either block on the block chain, according to block described in the block key pair
The transaction data of middle generation obtains ciphertext transaction data after being encrypted, specifically include:
The digital certificate that the transaction data of the either block on the block chain includes is obtained, it will be in the digital certificate
The primary key of the block is generated after the arrangement of character inverted order；
The primary key vector for obtaining the primary key carries out the primary key vector using homomorphic encryption algorithm
Homomorphic cryptography vector is obtained after encryption；
Hash result is obtained after encrypting using Hash key algorithm to the random number in the homomorphism key vector, is answered
Symmetric cryptography result is obtained after being encrypted with symmetric encipherment algorithm to the ciphertext data in the homomorphic cryptography vector；
Obtain final key after carrying out XOR operation to the Hash result and the symmetric cryptography result, using it is described most
Transaction data in block described in whole key pair obtains the ciphertext transaction data after being encrypted.
In a wherein possible embodiment, the common recognition node established between multiple banking terminals, according to described
The transaction results of common recognition node establish several blocks, form a block chain after connecting several blocks, comprising:
The existing transaction data that multiple banking terminals generate is obtained, is extracted from the existing transaction data each
The signature identification of the banking terminal establishes several common recognitions according to the signature identification between each banking terminal
Node；
Multiple transaction data are obtained from any common recognition node, are generated after the multiple transaction data is packaged
One transaction packet；
Starting multithreading obtains several transaction results after carrying out parallel processing to the transaction data in several transaction packets,
A block is generated after summarizing the common recognition node with same transaction result, forms the block chain after connecting several blocks.
In a wherein possible embodiment, the block key for obtaining the either block on the block chain, root
Ciphertext transaction data is obtained after being encrypted according to the transaction data generated in block described in the block key pair, comprising:
The digital certificate that the transaction data of the either block on the block chain includes is obtained, it will be in the digital certificate
The primary key of the block is generated after the arrangement of character inverted order；
The primary key vector for obtaining the primary key carries out the primary key vector using homomorphic encryption algorithm
Homomorphic cryptography vector is obtained after encryption；
Hash result is obtained after encrypting using Hash key algorithm to the random number in the homomorphism key vector, is answered
Symmetric cryptography result is obtained after being encrypted with symmetric encipherment algorithm to the ciphertext data in the homomorphic cryptography vector；
Obtain final key after carrying out XOR operation to the Hash result and the symmetric cryptography result, using it is described most
Transaction data in block described in whole key pair obtains the ciphertext transaction data after being encrypted.
In a wherein possible embodiment, what any banking terminal received on the block chain issued
Data sharing request sends the data sharing and requests to each block, receives the ciphertext that each block generates and hands over
Easy data will be sent to the banking terminal for issuing the data sharing request after ciphertext transaction data decryption, comprising:
The data sharing request that any banking terminal issues is received, is requested to obtain the silver according to the data sharing
The IP address of row terminal determines the block to be shared where the banking terminal according to the IP address；
The block key to be shared for obtaining the block to be shared generates after the block key to be shared is decrypted
Decrypt message；
The decryption message is sent in each block, receives each block to the feedback information of the decryption message, if institute
Stating in feedback information includes the block key to be shared, then the application block key to be shared decrypts the feedback information
Plaintext transaction data is obtained after issuing the encrypting transactions data of block, sends the plaintext transaction data to the area to be shared
Otherwise block is not sent.
In a wherein possible embodiment, the existing transaction data for obtaining multiple banking terminals and generating,
The signature identification that each banking terminal is extracted from the existing transaction data, according to the signature identification in each institute
It states and establishes several common recognition nodes between banking terminal, comprising:
The instruction for acquiring the existing transaction data is sent to each banking terminal, receives each banking terminal
Feedback information；
The characteristic character in the feedback information is obtained, is determined whether to receive the banking terminal according to the characteristic character
The transaction data of transmission；
The signature identification that the banking terminal is sent is extracted, is built between the banking terminal with the same signature identification
Vertical common recognition node.
It is described that multiple transaction data are obtained from any common recognition node in a wherein possible embodiment, it will
The multiple transaction data generates a transaction packet after being packaged, comprising:
The instruction for acquiring the existing transaction data is sent to each banking terminal, receives each banking terminal
Feedback information；
The characteristic character in the feedback information is obtained, is determined whether to receive the banking terminal according to the characteristic character
The transaction data of transmission；
The signature identification that the banking terminal is sent is extracted, is built between the banking terminal with the same signature identification
Vertical common recognition node.
In a wherein possible embodiment, the block key to be shared for obtaining the block to be shared, to institute
It states and generates decryption message after block key to be shared is decrypted, comprising:
Obtain corresponding key vector when the block key to be shared generates, the key vector include symmetric key and
Hash key；
It is decrypted to obtain initial solution using preset symmetric encipherment algorithm and the corresponding clear data of the symmetric key
Close result；
Using it is preset with key hashing and the Hash key to the random number in the block key to be shared
It is decrypted to obtain Hash result；
XOR operation is carried out to the initial ciphertext data and the Hash result and obtains the decryption message.
A kind of bank data sharing means based on block chain, including following module:
Block establishes module, the common recognition node being arranged to set up between multiple banking terminals, according to the common recognition node
Transaction results establish several blocks, form a block chain after connecting several blocks；
Data encryption module is set as obtaining the block key of the either block on the block chain, according to the block
The transaction data generated in block described in key pair obtains ciphertext transaction data after being encrypted；
Data sharing module is set as receiving the data sharing that any banking terminal on the block chain issues and asks
It asks, sends the data sharing and request to each block, the ciphertext transaction data that each block generates is received, by institute
The banking terminal for issuing the data sharing request is sent to after stating the decryption of ciphertext transaction data；
Wherein, the transaction packet generation module, including following module:
Primary key module is set as obtaining the number card that the transaction data of the either block on the block chain includes
Book will generate the primary key of the block after the character inverted order arrangement in the digital certificate；
Homomorphic cryptography module is set as obtaining the primary key vector of the primary key, using homomorphic encryption algorithm pair
The primary key vector obtains homomorphic cryptography vector after being encrypted；
Symmetrical encryption module is set as adding the random number in the homomorphism key vector using Hash key algorithm
Hash result is obtained after close, is obtained after encrypting using symmetric encipherment algorithm to the ciphertext data in the homomorphic cryptography vector
Symmetric cryptography result；
Ciphertext obtains module, is set as obtaining after carrying out XOR operation to the Hash result and the symmetric cryptography result
Final key obtains the ciphertext number of deals after being encrypted using the transaction data in block described in the final key pair
According to.
In a wherein possible embodiment, the block establishes module, comprising:
It builds a consensus node module, is set as obtaining the existing transaction data that multiple banking terminals generate, from described
The signature identification that each banking terminal is extracted in existing transaction data, according to the signature identification in each bank
Several common recognition nodes are established between terminal；
Transaction packet generation module is set as obtaining multiple transaction data from any common recognition node, will be the multiple
Transaction data generates a transaction packet after being packaged；
Block chain generation module is set as starting multithreading and is located parallel to the transaction data in several transaction packets
Several transaction results are obtained after reason, generate a block after summarizing the common recognition node with same transaction result, are connected several described
The block chain is formed after block.
A kind of computer equipment, including memory and processor are stored with computer-readable instruction in the memory, institute
When stating computer-readable instruction and being executed by the processor, so that the processor executes the above-mentioned bank data based on block chain
The step of sharing method.
A kind of storage medium being stored with computer-readable instruction, the computer-readable instruction are handled by one or more
When device executes, so that the step of one or more processors execute the above-mentioned bank data sharing method based on block chain.
Compared with current mechanism, in the application, have the advantages that
(1) by establishing block chain between different bank terminal, using encryption technology and common recognition mechanism, to have in time
Effect carries out data sharing between different bank, to effectively improve the competitiveness that each bank carries out finance activities；
(2) processing that can carry out numerous transaction data simultaneously by the way of multithreading, can be effectively reduced high concurrent
In the case of caused by transaction results can not generate in real time；
(3) encrypting and decrypting is carried out to block by Hash key and symmetric key, to improve the safety of block data
Property；
(4) by rationally being judged data sharing process, so that it is total quickly to form data between different blocks
Mechanism is enjoyed, convenient for carrying out transaction data Instantaneous sharing between different blocks.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the application
Limitation.
Fig. 1 is a kind of overall flow of the bank data sharing method based on block chain of the application in one embodiment
Figure；
Fig. 2 is that the block in a kind of bank data sharing method based on block chain of the application in one embodiment is built
Vertical process schematic；
Fig. 3 is that the data in a kind of bank data sharing method based on block chain of the application in one embodiment add
Close process schematic；
Fig. 4 is that the data in a kind of bank data sharing method based on block chain of the application in one embodiment are total
Enjoy process schematic；
Fig. 5 is a kind of structure chart of the bank data sharing means based on block chain of the application in one embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, and
It is not used in restriction the application.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being arranged used in the description of the present application
Diction " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition
Other one or more features, integer, step, operation, element, component and/or their group.
Fig. 1 is a kind of overall flow of the bank data sharing method based on block chain of the application in one embodiment
Figure, as shown in Figure 1, a kind of bank data sharing method based on block chain, comprising the following steps:
S1 establishes the common recognition node between multiple banking terminals, is established according to the transaction results of the common recognition node several
Block forms a block chain after connecting several blocks；
Specifically, needing to veritify the identity of banking terminal, i.e., in the common recognition node established between banking terminal
Whether node of building a consensus between any two banking terminal in advance needs to bank transaction data with regard to relevant property, such as one
Transaction is carried out between A banking terminal and B banking terminal, then will build between A banking terminal and B banking terminal
Vertical common recognition node.
S2 obtains the block key of the either block on the block chain, according in block described in the block key pair
The transaction data of generation obtains ciphertext transaction data after being encrypted；
Specifically, block key is endowed when block is established, assigning rule be can be according to block generation
Time obtains a number after the time entering ginseng to random function as independent variable, is then numbered according to this from database
In extract the corresponding key of the number.
S3 receives the data sharing request that any banking terminal on the block chain issues, sends the data
Sharing request receives the ciphertext transaction data that each block generates, by the ciphertext transaction data to each block
The banking terminal for issuing the data sharing request is sent to after decryption.
Specifically, after receiving the data sharing request of banking terminal sending, it be according to intelligent contract to data sharing
It requests corresponding transaction data that can share to be judged, again requests data sharing to each area after determination can be shared
Block.If the ciphertext transaction data for generating each block is decrypted, without successful decryption, then need to ask to sending data sharing
The banking terminal asked sends the instruction for retransmitting data sharing request.
The present embodiment, by establishing block chain between different bank terminal, using encryption technology and common recognition mechanism, thus
Data sharing is timely and effectively carried out between different bank, to effectively improve the competition that each bank carries out finance activities
Power.
In above-described embodiment, the S2 obtains the block key of the either block on the block chain, according to the block
The transaction data generated in block described in key pair obtains ciphertext transaction data after being encrypted, as is shown with reference to figure 3, can be by such as
Lower step is implemented:
The digital certificate that S201, the transaction data for obtaining the either block on the block chain include demonstrate,proves the number
The primary key of the block is generated after character inverted order arrangement in book；
Specifically, obtaining the exchange hour and type of transaction of transaction data in block, extracted after inquiring intelligent contract list
The exchange hour and the corresponding intelligent contract of the type of transaction out, the intelligence contract list storage is in the server；Its
In, it is provided with an index line in intelligent contract list, institute can be traversed when being inquired with application structure query language SQL
Index line is stated, the corresponding intelligent contract of the exchange hour is extracted from the index line, then further according to type of transaction pair
The several intelligent contracts extracted obtain the corresponding intelligent contract of the transaction data after being screened；The type of transaction is mainly
Refer to payment in part, lump sum etc..
Digital certificate acquisition request is issued to the intelligent contract formulation side, receives the feedback of the intelligent contract formulation side
Information extracts digital certificate included in the feedback information, will be raw after the character inverted order arrangement in the digital certificate
At the primary key of the block.Wherein, when extracting digital certificate included in the feedback information, first to the feedback
Information carries out segmentation segmentation, that is, the characteristic character in the feedback information, generally ": ", " " " " etc. is obtained, then according to
The feedback information is divided into major part and accessories section by characteristic character, and major part is digital certificate.
S202, the primary key vector for obtaining the primary key, using homomorphic encryption algorithm to the primary key to
Amount obtains homomorphic cryptography vector after being encrypted；
Specifically, used homomorphic encryption algorithm can be additive homomorphism Encryption Algorithm either multiplicative homomorphic algorithm.
S203, Hash knot is obtained after encrypting using Hash key algorithm to the random number in the homomorphism key vector
Fruit obtains symmetric cryptography result after encrypting using symmetric encipherment algorithm to the ciphertext data in the homomorphic cryptography vector；
Wherein, symmetric key encryption is called private key encryption or shared key encryption, that is, sends and receives the double of data
Side must use identical key pair that operation is encrypted and decrypted in plain text.Symmetric key encryption algorithm specifically include that DES, 3DES,
IDEA, FEAL, BLOWFISH etc..Hash key is obtained after being calculated using hash function, and the characteristic having is as follows: original
Password obtains a cryptographic Hash after hash function calculates；Change original password, the calculated cryptographic Hash of hash function also can phase
It should change；Same password, cryptographic Hash are also identical；Hash function is unidirectional, irreversible characteristic.
Specifically, the SMS4 Encryption Algorithm that can also be used is encrypted when encrypting to the random number, such as will
Plaintext to be encrypted successively carries out round function iterative calculation with the key in round key sequence, specific as follows:
If input is (X in plain text0, X1, X2, X3)∈(Z2 32)4, ciphertext output is (Y0,Y1,Y2,Y3)∈(Z2 32)4, round key
For rki∈Z2 32, i=0,1,2 ..., 31；Then the enciphering transformation of SMS4 Encryption Algorithm algorithm is,
Xi+4=F (Xi,Xi+1,Xi+1,Xi+2,rki)=Xi T(Xi+1 Xi+2 Xi+3 rki), i=0,1 ..., 31；
(Y0, Y1, Y2, Y3)=R (X32, X33, X34, X35)=(X35, X34, X33, X32)。
S204, final key is obtained after carrying out XOR operation to the Hash result and the symmetric cryptography result, applied
Transaction data in block described in the final key pair obtains the ciphertext transaction data after being encrypted.
Fig. 2 is that the block in a kind of bank data sharing method based on block chain of the application in one embodiment is built
Vertical process schematic, as shown, the S1, establishes the common recognition node between multiple banking terminals, according to the common recognition node
Transaction results establish several blocks, form a block chain after connecting several blocks, comprising:
S101, the existing transaction data that multiple banking terminals generate is obtained, is extracted from the existing transaction data
The signature identification of each banking terminal out establishes several institutes according to the signature identification between each banking terminal
State common recognition node；
Specifically, can write banking terminal in transaction data when any one banking terminal generates transaction data
Title or the information such as feature code name, in order to carry out data search when counting to transaction data in the future, in this reality
Different banking terminals can be about scheduled on using identical feature code name, for example, A bank and B bank according to prior by applying in example
Preadmission row data sharing, then A bank and B bank just use identical feature code name.Whether search different bank terminal has
Which banking terminal identical feature code name is assured that between node of building a consensus.
S102, multiple transaction data are obtained from any common recognition node, the multiple transaction data is packaged
A transaction packet is generated afterwards；
Specifically, can be packaged according to the time that transaction data generates when being packaged multiple transaction data,
The transaction data generated in a certain period of time is packaged into a transaction packet.
S103, starting multithreading obtain several transaction after carrying out parallel processing to the transaction data in several transaction packets
As a result, generating a block after summarizing the common recognition node with same transaction result, the area is formed after connecting several blocks
Block chain.
This step can be carried out the processing of numerous transaction data simultaneously by the way of multithreading, can be effectively reduced height
Transaction results caused by under complications can not generate in real time.
The present embodiment, by being effectively treated to the transaction data that banking terminal generates, so as to establish area in time
Block, convenient for carrying out instant data sharing between bank.
Fig. 4 is that the data in a kind of bank data sharing method based on block chain of the application in one embodiment are total
Process schematic is enjoyed, as shown, the S3, receives the data sharing that any banking terminal on the block chain issues
Request sends the data sharing and requests to each block, receives the ciphertext transaction data that each block generates, will
The banking terminal for issuing the data sharing request is sent to after the ciphertext transaction data decryption, comprising:
S301, the data sharing request that any banking terminal issues is received, requests to obtain according to the data sharing
The IP address of the banking terminal determines the block to be shared where the banking terminal according to the IP address；
Specifically, obtaining the historical data that transaction data in the block generates frequency, it is arranged according to the historical data
Acquire the timing node of transaction data in the block；When collecting historical data, each banking terminal is compiled in block
Labelled notation records the historical data of each banking terminal generation by tracking.
When the timing node arrives, the real-time transaction data that each banking terminal generates in the block is acquired, from
Data sharing solicited message is extracted in the real-time transaction data.Wherein, the history of the normal transaction data length is obtained
An arm's length dealing data threshold is arranged according to the historical data in data, if the transaction that any banking terminal of discovery issues
The length of data is greater than the arm's length dealing data threshold, then carries out keyword query to it, wherein keyword can be " altogether
Enjoy ", if containing the keyword in the transaction data that the banking terminal issues, the data sharing solicited message is extracted,
If issuing data exception information to node of knowing together without this keyword.
S302, the block key to be shared for obtaining the block to be shared, are decrypted the block key to be shared
Decryption message is generated afterwards；
Specifically, when obtaining the block key to be shared of the block to be shared, it can be first to the block to be shared
Block key acquisition instruction is sent, the feedback information of the block to be shared is then received, if having in the feedback information described
Block key to be shared, then be decrypted using it, if needing to retransmit key without the block key to be shared and obtaining
Whether instruction fetch, or the veritification key acquisition instruction are correct.
S303, the decryption message is sent in each block, receive each block to the feedback information for decrypting message,
If in the feedback information including the block key to be shared, the application block key to be shared decrypts the feedback
Plaintext transaction data is obtained after the encrypting transactions data of delivering block, sends the plaintext transaction data to described to be shared
Otherwise block is not sent.
Specifically, can be encrypted using identical key in encryption for carry out shared transaction data, this
Sample can use a key in decryption and the data of different blocks can be decrypted.Therefore, in feedback information
In there is no the block comprising the block key to be shared, the information reflected is that these blocks disagree carry out data sharing.
The present embodiment, by rationally being judged data sharing process, to quickly be formed between different blocks
Data Share System, convenient for carrying out transaction data Instantaneous sharing between different blocks.
In one embodiment, the S101, obtain the existing transaction data that multiple banking terminals generate, from described
The signature identification that each banking terminal is extracted in existing transaction data, according to the signature identification in each bank
Several common recognition nodes are established between terminal, comprising:
The instruction for acquiring the existing transaction data is sent to each banking terminal, receives each banking terminal
Feedback information；
Specifically, obtaining the IP address of the banking terminal, dns resolution is obtained after carrying out dns resolution to the IP address
Code determines the physical location to the banking terminal according to last three bit digital in the dns resolution code, according to described
The banking terminal is numbered in physical location, and feedback information is marked with the number.The dns resolution is exactly will
IP address and dns resolution code listing are corresponded to, and the corresponding DNS of the IP address is inquired from dns resolution code classification
Parse code.
The characteristic character in the feedback information is obtained, is determined whether to receive the banking terminal according to the characteristic character
The transaction data of transmission；
Wherein, characteristic character is primarily referred to as " agreeing to " and the words with judgement property such as " negatives ".
The signature identification that the banking terminal is sent is extracted, is built between the banking terminal with the same signature identification
Vertical common recognition node.Wherein, it when inquiring the signature identification of the transaction data, can be split by the transaction data
Several sub-blocks, separator are punctuation mark, such as ", ", ", ", ": " etc., then inquire the text information in each sub-block, will
The text information is packaged into a group of text, and applicating text Similarity algorithm obtains the core word in the group of text, by core
The corresponding interbank of the consistent transaction data of word is built a consensus node, wherein the content known together is the core word.
The present embodiment, by common recognition node establishment process effectively limited, thus enhance each banking terminal it
Between the shared safety of transaction data.
In one embodiment, the S102, the multiple transaction data of acquisition from any common recognition node, will be described more
A transaction data generates a transaction packet after being packaged, comprising:
Obtain the transaction complexity of the multiple transaction data；
Wherein, transaction complexity refers to terminal quantity, related step number and number of deals involved in transaction
According to amount etc..Transaction complexity can carry out being divided into multiple grades according to transaction data amount, for example, the data volume of simple transaction is
Less than 100, the data volume of vanilla transaction is 101~1000, and the data volume of more complex transaction is 1001~5000, complex transaction
Data volume is greater than 5000 etc..
The performance indicator of server where obtaining the common recognition node；
Specifically, the performance indicator of the server in the present embodiment is primarily referred to as the processing data capability of server, that is, exist
The upper limit of processing data in unit time, different transaction corresponds to different servers, in order to which each server is sufficiently sent out
The effect of waving.
The multiple transaction data is packaged into one according to the corresponding relationship of the transaction complexity and the performance indicator
The transaction packet.
Specifically, can set performance indicator includes m thread, m is positive integer, then multiple Transaction Informations can be packaged as m
A, per thread distributes a certain number of transaction according to transaction complexity.For example, m=5, n=500, and 500 Transaction Informations
The middle higher transaction of complexity has 100, and 500 Transaction Informations seemingly, then can be packaged as by the Complexity classes of remaining 400 transaction
5 threads, per thread include the lower Transaction Information of 80 complexities and 20 higher Transaction Informations of complexity.
Different transaction are carried out being packaged to improve the efficiency of transaction data processing by the present embodiment.
In one embodiment, the block key to be shared of the S302, the acquisition block to be shared, to described to altogether
It enjoys and generates decryption message after block key is decrypted, comprising:
Obtain corresponding key vector when the block key to be shared generates, the key vector include symmetric key and
Hash key；
Specifically, two kinds of common encryption methods of Hash key and symmetric key, wherein original password is through hash function meter
A cryptographic Hash is obtained after calculation, cryptographic Hash can also be changed by changing original password, therefore be often used cryptographic Hash as data encryption
Mode.
It is decrypted to obtain initial solution using preset symmetric encipherment algorithm and the corresponding clear data of the symmetric key
Close result；
Using it is preset with key hashing and the Hash key to the random number in the block key to be shared
It is decrypted to obtain Hash result；
XOR operation is carried out to the initial ciphertext data and the Hash result and obtains the decryption message.
Specifically, XOR operation is also named half plus operation, algorithm is equivalent to the binary addition without carry: two into
System is lower to indicate true with 1, and 0 indicates false, then the algorithm of exclusive or are as follows: 0 ⊕ 0=0,1 ⊕ 0=1,0 ⊕ 1=1,1 ⊕ 1=0 (are all
0, it is different be 1), these rules with addition be it is identical, only without carry, so exclusive or is often construed to not-carry addition.
The present embodiment is effectively decrypted encryption data by Hash Encryption Algorithm and symmetric encipherment algorithm, to protect
Card understands the accuracy of secret report text.
In one embodiment it is proposed that a kind of bank data sharing means based on block chain, as shown in figure 5, including
Following module:
Block establishes module 51, the common recognition node being arranged to set up between multiple banking terminals, according to the common recognition node
Transaction results establish several blocks, form a block chain after connecting several blocks；
Data encryption module 52 is set as obtaining the block key of the either block on the block chain, according to the area
The transaction data generated in block described in block key pair obtains ciphertext transaction data after being encrypted；
Data sharing module 53 is set as receiving the data sharing that any banking terminal on the block chain issues
Request sends the data sharing and requests to each block, receives the ciphertext transaction data that each block generates, will
The banking terminal for issuing the data sharing request is sent to after the ciphertext transaction data decryption；
Wherein, the transaction packet generation module, including following module:
Primary key module is set as obtaining the number card that the transaction data of the either block on the block chain includes
Book will generate the primary key of the block after the character inverted order arrangement in the digital certificate；
Homomorphic cryptography module is set as obtaining the primary key vector of the primary key, using homomorphic encryption algorithm pair
The primary key vector obtains homomorphic cryptography vector after being encrypted；
Symmetrical encryption module is set as adding the random number in the homomorphism key vector using Hash key algorithm
Hash result is obtained after close, is obtained after encrypting using symmetric encipherment algorithm to the ciphertext data in the homomorphic cryptography vector
Symmetric cryptography result；
Ciphertext obtains module, is set as obtaining after carrying out XOR operation to the Hash result and the symmetric cryptography result
Final key obtains the ciphertext number of deals after being encrypted using the transaction data in block described in the final key pair
According to.
In one embodiment, the block establishes module, comprising:
It builds a consensus node module, is set as obtaining the existing transaction data that multiple banking terminals generate, from described
The signature identification that each banking terminal is extracted in existing transaction data, according to the signature identification in each bank
Several common recognition nodes are established between terminal；
Transaction packet generation module is set as obtaining multiple transaction data from any common recognition node, will be the multiple
Transaction data generates a transaction packet after being packaged；
Block chain generation module is set as starting multithreading and is located parallel to the transaction data in several transaction packets
Several transaction results are obtained after reason, generate a block after summarizing the common recognition node with same transaction result, are connected several described
The block chain is formed after block.
In one embodiment it is proposed that a kind of computer equipment, the computer equipment includes memory and processor,
Computer-readable instruction is stored in memory, when computer-readable instruction is executed by processor, so that processor execution is above-mentioned
The step of bank data sharing method based on block chain in each embodiment.
In one embodiment it is proposed that a kind of storage medium for being stored with computer-readable instruction, this is computer-readable
Instruction is when being executed by one or more processors, so that one or more processors described being based on of executing in the various embodiments described above
The step of bank data sharing method of block chain.Wherein, the storage medium can be non-volatile memory medium.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can be stored in a computer readable storage medium, storage
Medium may include: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random
Access Memory), disk or CD etc..
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of the technical characteristic in example to be all described, as long as however, lance is not present in the combination of these technical characteristics
Shield all should be considered as described in this specification.
The some exemplary embodiments of the application above described embodiment only expresses, wherein describe it is more specific and detailed,
But it cannot be understood as the limitations to the application the scope of the patents.It should be pointed out that for the ordinary skill of this field
For personnel, without departing from the concept of this application, various modifications and improvements can be made, these belong to the application
Protection scope.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of bank data sharing method based on block chain characterized by comprising
The common recognition node between multiple banking terminals is established, establishes several blocks according to the transaction results of the common recognition node, even
A block chain is formed after connecing several blocks；
The block key for obtaining the either block on the block chain, according to the friendship generated in block described in the block key pair
Easy data obtain ciphertext transaction data after being encrypted；
The data sharing request that any banking terminal on the block chain issues is received, the data sharing request is sent
To each block, the ciphertext transaction data that each block generates is received, will be sent out after ciphertext transaction data decryption
It send to the banking terminal for issuing the data sharing request；
Wherein, the block key for obtaining the either block on the block chain is produced according in block described in the block key pair
Raw transaction data obtains ciphertext transaction data after being encrypted, specifically include:
The digital certificate that the transaction data of the either block on the block chain includes is obtained, by the character in the digital certificate
The primary key of the block is generated after inverted order arrangement；
The primary key vector for obtaining the primary key encrypts the primary key vector using homomorphic encryption algorithm
After obtain homomorphic cryptography vector；
Obtain Hash result after encrypting using Hash key algorithm to the random number in the homomorphism key vector, using pair
Symmetric cryptography result is obtained after claiming Encryption Algorithm to encrypt the ciphertext data in the homomorphic cryptography vector；
Final key is obtained after carrying out XOR operation to the Hash result and the symmetric cryptography result, using described final close
Key obtains the ciphertext transaction data after encrypting to the transaction data in the block.
2. the bank data sharing method according to claim 1 based on block chain, which is characterized in that it is described establish it is multiple
Common recognition node between banking terminal establishes several blocks according to the transaction results of the common recognition node, connects several areas
A block chain is formed after block, comprising:
The existing transaction data that multiple banking terminals generate is obtained, is extracted from the existing transaction data each described
The signature identification of banking terminal establishes several common recognition sections according to the signature identification between each banking terminal
Point；
Multiple transaction data are obtained from any common recognition node, and one is generated after the multiple transaction data is packaged and is handed over
Easily packet；
Starting multithreading obtains several transaction results after carrying out parallel processing to the transaction data in several transaction packets, summarizes
A block is generated after common recognition node with same transaction result, forms the block chain after connecting several blocks.
3. the bank data sharing method according to claim 1 based on block chain, which is characterized in that described in the reception
The data sharing request that any banking terminal on block chain issues, sends the data sharing and requests to each area
Block receives the ciphertext transaction data that each block generates, and issues institute for being sent to after ciphertext transaction data decryption
State the banking terminal of data sharing request, comprising:
The data sharing request that any banking terminal issues is received, is requested to obtain bank's end according to the data sharing
The IP address at end determines the block to be shared where the banking terminal according to the IP address；
The block key to be shared for obtaining the block to be shared generates decryption after the block key to be shared is decrypted
Message；
The decryption message is sent in each block, receives each block to the feedback information of the decryption message, if described anti-
It include the block key to be shared in feedforward information, then the application block key to be shared is decrypted the feedback information and issued
Plaintext transaction data is obtained after the encrypting transactions data of block, sends the plaintext transaction data to the block to be shared, it is no
It does not send then.
4. the bank data sharing method according to claim 2 based on block chain, which is characterized in that the acquisition is multiple
The existing transaction data that the banking terminal generates, extracts the spy of each banking terminal from the existing transaction data
Sign mark, several common recognition nodes are established according to the signature identification between each banking terminal, comprising:
The instruction for acquiring the existing transaction data is sent to each banking terminal, receives the anti-of each banking terminal
Feedforward information；
The characteristic character in the feedback information is obtained, determines whether that receiving the banking terminal sends according to the characteristic character
Transaction data；
The signature identification that the banking terminal is sent is extracted, is established altogether between the banking terminal with the same signature identification
Know node.
5. the bank data sharing method according to claim 2 based on block chain, which is characterized in that described from any institute
It states and obtains multiple transaction data at common recognition node, a transaction packet is generated after the multiple transaction data is packaged, comprising:
Obtain the transaction complexity of the multiple transaction data；
The performance indicator of server where obtaining the common recognition node；
The multiple transaction data is packaged into described in one according to the corresponding relationship of the transaction complexity and the performance indicator
Transaction packet.
6. the bank data sharing method according to claim 3 based on block chain, which is characterized in that described in the acquisition
The block key to be shared of block to be shared generates decryption message after the block key to be shared is decrypted, comprising:
Corresponding key vector when the block key to be shared generates is obtained, the key vector includes symmetric key and Hash
Key；
It is decrypted to obtain initial decryption knot using preset symmetric encipherment algorithm and the corresponding clear data of the symmetric key
Fruit；
The random number in the block key to be shared is carried out with key hashing and the Hash key using preset
Decryption obtains Hash result；
XOR operation is carried out to the initial ciphertext data and the Hash result and obtains the decryption message.
7. a kind of bank data sharing means based on block chain characterized by comprising
Block establishes module, the common recognition node being arranged to set up between multiple banking terminals, according to the transaction of the common recognition node
As a result several blocks are established, form a block chain after connecting several blocks；
Data encryption module is set as obtaining the block key of the either block on the block chain, according to the block key
Ciphertext transaction data is obtained after encrypting to the transaction data generated in the block；
Data sharing module is set as receiving the data sharing request that any banking terminal on the block chain issues,
It sends the data sharing to request to each block, receives the ciphertext transaction data that each block generates, it will be described
The banking terminal for issuing the data sharing request is sent to after the decryption of ciphertext transaction data；
Wherein, the transaction packet generation module, including following module:
Primary key module is set as obtaining the digital certificate that the transaction data of the either block on the block chain includes, will
The primary key of the block is generated after character inverted order arrangement in the digital certificate；
Homomorphic cryptography module is set as obtaining the primary key vector of the primary key, using homomorphic encryption algorithm to described
Primary key vector obtains homomorphic cryptography vector after being encrypted；
Symmetrical encryption module is set as after encrypting using Hash key algorithm to the random number in the homomorphism key vector
Hash result is obtained, is obtained after being encrypted using symmetric encipherment algorithm to the ciphertext data in the homomorphic cryptography vector symmetrical
Encrypted result；
Ciphertext obtains module, is set as obtaining finally after carrying out XOR operation to the Hash result and the symmetric cryptography result
Key obtains the ciphertext transaction data after being encrypted using the transaction data in block described in the final key pair.
8. the bank data sharing means according to claim 7 based on block chain, which is characterized in that the block is established
Module, comprising:
It builds a consensus node module, is set as obtaining the existing transaction data that multiple banking terminals generate, from described existing
The signature identification that each banking terminal is extracted in transaction data, according to the signature identification in each banking terminal
Between establish several common recognition nodes；
Transaction packet generation module is set as obtaining multiple transaction data from any common recognition node, by the multiple transaction
Data generate a transaction packet after being packaged；
Block chain generation module, after being set as starting multithreading to the transaction data progress parallel processing in several transaction packets
Several transaction results are obtained, a block is generated after summarizing the common recognition node with same transaction result, connects several blocks
After form the block chain.
9. a kind of computer equipment, which is characterized in that including memory and processor, being stored with computer in the memory can
Reading instruction, when the computer-readable instruction is executed by the processor, so that the processor executes such as claim 1 to 6
Any one of bank data sharing method described in claim based on block chain the step of.
10. a kind of storage medium for being stored with computer-readable instruction, which is characterized in that the computer-readable instruction is by one
Or multiple processors are when executing, so that one or more processors are executed as described in any one of claims 1 to 6 claim
The step of bank data sharing method based on block chain.
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| CN201910375075.0A CN110224808B (en) | 2019-05-07 | 2019-05-07 | Bank data sharing method and device based on block chain, computer equipment and storage medium |
| PCT/CN2020/087558 WO2020224489A1 (en) | 2019-05-07 | 2020-04-28 | Blockchain-based bank data sharing method and related apparatus |
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| CN201910375075.0A CN110224808B (en) | 2019-05-07 | 2019-05-07 | Bank data sharing method and device based on block chain, computer equipment and storage medium |
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| WO2020224489A1 (en) | 2020-11-12 |
| CN110224808B (en) | 2022-10-04 |
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