CN106788987A - A kind of collage-credit data based on block chain is shared and transaction system - Google Patents

A kind of collage-credit data based on block chain is shared and transaction system Download PDF

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CN106788987A
CN106788987A CN201611063232.7A CN201611063232A CN106788987A CN 106788987 A CN106788987 A CN 106788987A CN 201611063232 A CN201611063232 A CN 201611063232A CN 106788987 A CN106788987 A CN 106788987A
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data
collage
shared
credit
transaction
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王天青
李明
黄海旻
吕明霞
王宏彬
孟斐
夏岩
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Tree Reading (shanghai) Mdt Infotech Ltd
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Tree Reading (shanghai) Mdt Infotech Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/085Secret sharing or secret splitting, e.g. threshold schemes
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00Commerce
    • G06Q30/06Buying, selling or leasing transactions
    • G06Q30/0601Electronic shopping [e-shopping]
    • G06Q30/0609Buyer or seller confidence or verification
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q40/00Finance; Insurance; Tax strategies; Processing of corporate or income taxes
    • G06Q40/02Banking, e.g. interest calculation or account maintenance
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • H04L67/104Peer-to-peer [P2P] networks

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Abstract

Shared the present invention relates to a kind of collage-credit data based on block chain and transaction system, the collage-credit data is shared to include the network node of at least two P2P with transaction system, the network node includes bottom block catenary system and operates in collage-credit data shared platform on the bottom block catenary system, and the collage-credit data shared platform includes:Data sharing module, data evaluation module, data query transaction modules, block chain adaptation layer.Collage-credit data of the invention is shared to use one believable collage-credit data of block chain technique construction shared and transaction platform with transaction system; use special Data Share System; data query mechanism; data trade mechanism and data evaluation mechanism; collage-credit data owner and collage-credit data demander can be attracted to use; to cause that collage-credit data supplier can realize data trade in the case of data are protected, collage-credit data issuer can then obtain collage-credit data, improve the air control level of oneself.

Description

A kind of collage-credit data based on block chain is shared and transaction system
Technical field
Shared the present invention relates to collage-credit data and transaction system, more particularly to a kind of collage-credit data based on block chain is total to Enjoy and transaction system.
Background technology
The leading credit system of Central Bank's reference cannot meet financial market operation demand, by the end of, natural person's letter in 2014 The number 3.5 hundred million of loan documentation is subtracted with archives number 8.57 hundred million, the Central Bank's collage-credit data for there are 500,000,000 people is blank.Reference number According to can substantially be divided into following a few classes:
First is identity attribute, refers to person identification and authentication information, including name, sex, identity card, age, wedding Relation by marriage family, address, occupation, schooling etc..
Second is contractual capacity, refers to the information for assessing personal refund wish, including income, deposit, marketable securities, business Industry insurance etc..
3rd is credit record, i.e., for assessing the information of personal refund wish, including individual in commercial bank loans, letter The activity occurred in the financial credit activities such as loan, credit card, guarantee is netted with card, consumer finance credit, P2P, also there is non-gold in addition The individual for melting mechanism buys on credit, payment information etc., and these can show behavior of the people in terms of credit.
4th is behavioural characteristic, that is, reflect personal behavior feature and assess the information of personal credit Variance trend, bag accordingly Include the letter such as residence transition, consumer behavior custom, work and study transition, communication behavior feature, internet behavior record and preference Breath.
5th is social data, that is, reflect personal communication relation, the information of social words and deeds feature.
6th is public records information, such as the information such as civil, criminal, administrative litigation judgement, administrative penalty.
Obtaining collage-credit data at present has two ways, and the first is the reference company for having licence plate, and second is alliance of company, I.e. industry by collage-credit data and demand Ji Jia enterprises it is spontaneous constitute an alliance, data sharing is carried out in alliance.But it is each The collage-credit data that family possesses is different, has their own characteristics each, so if a collage-credit data user needs complete collage-credit data When, it is necessary to dock a number of main strategies companies.
Reference company is limited by data source channel, and general information is relatively simple, and is typically only capable to provide inquiry service.This A little reference companies typically use traditional IT technical schemes, data to be typically maintained in relevant database (such as Oracle), Then inquired about for third party by Web Service interfaces.These interfaces and Data Exchange Standard are general by reference company oneself Definition, does not have unified standard.Data query is all paid, generally according to inquiry times charge.And its collage-credit data amount It is few, and species is single;It is most of that unidirectional inquiry is only provided, it is impossible to by data user's supplementary data;From the point of view of data user, It is time-consuming and laborious in order to improve air control, it is necessary to dock Duo Jia references company.
Second is alliance of company, one alliance of spontaneous composition of such as internet financing corporation, and black name is shared in alliance Forms data, prevents malicious user from cheating loan.Then there is data exchange and lack unified standard with inquiry in company's alliance scheme, while lacking Weary a series of mechanism so that each participant being capable of easily shared data and inquiry data.And it lacks data protection Mechanism, lacks the faith mechanism based on technology, lacks incentive mechanism to attract more people's shared datas.
The technical scheme of alliance has diversified forms, (1) file-sharing mode be blacklist data by way of file (mode such as mail, FTP) is shared in alliance, allied member oneself is responsible for data persistence and same with the operation system of oneself Step;(2) unified data platform, each side of alliance builds a data sharing platform, the general portion of this shared platform using tradition IT In certain league members or public cloud, everybody uploads data and inquiry data by way of interface for administration.
The content of the invention
Shared the purpose of the present invention is to propose to a kind of collage-credit data based on block chain and transaction system, there is provided one can quilt Each side is based on the collage-credit data shared system of technology and no platform endorsement, can the side's of letting on easily shared data, and And technically ensure that data are not abused, the rights and interests of data owner are ensured, and technically guarantee fairness, ensure number Certain income is obtained after shared data according to supplier, excitation participant shares more data.
To achieve the above object, shared and transaction system the invention provides a kind of collage-credit data based on block chain, institute Stating collage-credit data and sharing includes the network node of at least two P2P with transaction system, and the network node includes bottom block Catenary system and collage-credit data shared platform on the bottom block catenary system is operated in, the collage-credit data shared platform bag Include:
Data sharing module, for the shared reference metadata of data set provider;
Data evaluation module, the reference metadata for providing data set provider is evaluated;
Data query transaction modules, reference metadata is inquired about for demand data person, and for being handed over data set provider Easily;
Block chain adaptation layer, for collage-credit data shared platform to be fitted into bottom block catenary system;
The data set provider calls data sharing module to upload reference metadata and carry out data record;The data are needed The person of asking calls data query transaction modules to inquire about reference metadata, and is traded with data set provider, the reference transaction of generation Data;The block chain adaptation layer is broadcasted reference metadata or reference transaction data, is obtaining the network more than 50% After node verification, newly-generated reference metadata or reference transaction data is stored into bottom block catenary system.
Preferably, the block chain adaptation layer includes common recognition algorithm adaptation module, data adaptation module and intelligent contract Adaptation module.
Preferably, the common recognition algorithm adaptation module goes out a set of common recognition the public of algorithm and connects using abstract common recognition algorithm abstraction Mouthful, and according to underlying algorithm matching adapter;The adapter at least includes that work proves that algorithm adapter, rights and interests prove algorithm Adapter.
Preferably, the abstract model of the data adaptation module definition block chain data, and according to block chain data form It is adapted to.
Preferably, the abstract model of the intelligent intelligent contract of contract adaptation module definition, and according to the reality of intelligent contract Existing mode is adapted to.
Preferably, the step of data set provider shares reference metadata is as follows:
A) data set provider assembles reference metadata according to the form of definition, and calls the upload interface of data sharing module Upload reference metadata;
B) the data sharing module calls the common recognition algorithm adaptation module to carry out data record, and the common recognition algorithm is fitted With module according to selected common recognition algorithm, newly-generated block is periodically obtained;
C) the common recognition algorithm adaptation module is broadcasted reference metadata, is tested the network node more than 50% is obtained After card, newly-generated reference metadata is deposited into newly-generated block, newly-generated block calls data adaptation module to write Enter in block chain;
D) final block information is returned to data sharing module, and the data sharing by common recognition algorithm adaptation module Final block information is returned to data set provider by module.
Preferably, the demand data person carries out as follows the step of data query is concluded the business:
A) demand data person according to demand data principal mark know generation hashed value, and according to principal mark know hashed value and demand The type of data calls the query interface in data query transaction modules;
B) the data query transaction modules call data adaptation module, and the data adaptation module to be known according to principal mark Hashed value and the type queries of demand data be stored in reference metadata on local block chain;
C) reference metadata is returned to data query transaction modules, the data query transaction by the data adaptation module Module is by the reference metadata person that returns to demand data;
D) data set provider ID of the demand data person in the reference metadata for returning obtains data set provider Public key, and according to the signature of data set provider in the public key verifications reference metadata of data set provider;
E) after public key verifications, demand data person goes on an expedition and data set provider partial data access interface is extracted in cell data List information;
F) demand data person sends access request, the data of access request according to data set provider partial data access interface Public key according to data set provider is encrypted, wherein, principal mark knowledge, data type, data are comprised at least in the access request Demander ID and demand data person sign.
G) after access request is received, the data set provider is decrypted with private key, extracts the data in inquiry request Demander ID, and according to demand data in the public key verifications of demand data person inquiry data after the public key for obtaining demand data person The signature of person;
H) after the data set provider is verified, according to complete collage-credit data, transaction value and data set provider Signature calls the intelligent contract of intelligent contract adaptation module generation transaction;
I) after confirming to transaction value, the demand data person uses private key to the intelligent contract Signature Confirmation, and And the transaction data of generation is broadcast to each network node by the intelligent contract, tested the network node more than 50% is obtained After card, the data adaptation module is called to be written in block chain, and by the partial data person that is sent to demand data.
Preferably, the collage-credit data shared platform also includes key management distribution module, and mould is distributed in the key management Block is used to manage the corresponding relation between ID and public key, and the key management distribution module is additionally operable to generate key pair.
Preferably, the step of data evaluation module is evaluated the reference metadata that data set provider provides is such as Under:
A) data evaluation person selects the evaluation algorithms of definition to being evaluated by handing over facile reference partial data, and Generation reference evaluating data, calls the upload interface of data evaluation module to upload reference evaluating data afterwards;
B) the reference evaluating data is broadcast to each network node, and the network by the data evaluation module Node is checked according to evaluating data;
C) when the network node less than specified quantity is raised an objection, the data evaluation module calls the data adaptation Module notes down in bottom block catenary system reference evaluating data;
D) the data evaluation module returns result to data evaluation person.
Based on above-mentioned technical proposal, it is an advantage of the invention that:
Collage-credit data of the invention is shared to use one believable collage-credit data of block chain technique construction with transaction system Shared and transaction platform, the collage-credit data is shared to use special Data Share System with transaction system, data query mechanism, Data trade mechanism and data evaluation mechanism, can attract collage-credit data owner and collage-credit data demander to use, to cause Collage-credit data supplier can obtain certain economic compensation in the case of data are protected, and collage-credit data issuer then can be with Collage-credit data is obtained, the air control level of oneself is improved.
Collage-credit data of the invention is shared can to form complementation with transaction system with existing collage-credit data, effective to expand Collage-credit data scope and the crowd of covering.After the shared success with transaction system construction of the collage-credit data, mesh can be partly solved The preceding incomplete problem of credit system, can play good supplementary function, can preferably be bank, little Dai companies, consumption Finance, network loan, big data company and other internet financial institution services reductions are because of exceeding that collage-credit data not exclusively causes Phase rate, improves business operational paradigm.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings:
Fig. 1 is block chain logical construction schematic diagram;
Fig. 2 is the block chain work-based logic during transaction data record;
Fig. 3 is a kind of technology stack schematic diagram of typical block chain;
Fig. 4 is that collage-credit data is shared and transaction system topological diagram;
Fig. 5 is network node logical construction schematic diagram;
Fig. 6 is collage-credit data shared platform structural representation;
Fig. 7 is common recognition algorithm adaptation module logical schematic;
Fig. 8 is data structure schematic diagram;
Fig. 9 is shared reference metadata Signalling exchange schematic diagram;
Figure 10 is data query transaction Signalling exchange schematic diagram.
Specific embodiment
Below by drawings and Examples, technical scheme is described in further detail.
Collage-credit data of the invention is shared to be formed with transaction system bottom based on block chain, and the block chain technology is a kind of Using decentralization and the technology of the reliability for removing trust mode collective one notebook data book of maintenance, it is needed in the system of letting on Any number of nodes, are associated in the data block of generation (block) using cryptography method by a string and are wrapped in each data Contained in certain hour system full detail exchange data, and generate data fingerprint for verify its information validity and Link next database block.
The block chain logic of Fig. 1 is illustrated to be to be briefly described one section in the middle of block chain.Wherein each block has sensing The link of previous block, until the block for initially creating is original block;And each pen occurred on block catenary system Transaction can all be present in some block, and by persistence.For example in block 54 link is contained, be linked to block 53; Link is contained in block 53, block 52 is linked to;Link is contained in block 52, block 51 is linked to, by that analogy, until Initial original block.
On block catenary system, the working mechanism of block chain is explained by taking transaction data record process as an example, it can be effective Ground solves the problems, such as dual consumption and Byzantium general.As shown in Fig. 2 its detailed process is as follows:
(1), last link of block chain is Owner1, and it uses the previous transaction number of the public key verifications of Owner0 According to;
(2), Owner1 signs the transaction data with the key of itself;
(3), transaction data is sent to Owner2 from Owner1, and is broadcasted to the whole network;
(4), transaction data can just be considered as transaction and complete, it is necessary to obtain the confirmation of enough multinodes when broadcast; And that transaction data for stamping timestamp earliest in whole P2P networks is identified as being successfully transaction;
(5) after, concluding the business successfully, data recorded in block.
A kind of technology stack of typical block chain is present embodiments provided, as shown in figure 3, including:
(1), Internet.It is general to use P2P network technologies, therefore there is no central server in block chain network, if Any one or more nodes are lost from block chain network, and data will not also lose, while including broadcast mechanism sum According to authentication mechanism, it is ensured that data transmission security and high efficiency.
(2), data Layer.Core is the data structure of data block and chain type, while the data of generation can all add the time Stamp, and hashing algorithm is used, prevent data to be tampered.AES (such as rivest, shamir, adelman) is also used simultaneously, to protect The security of data and the privacy of user.
(3), common recognition layer.Common recognition mode can use proof of work, and it is that one kind is able to ensure that correct option is difficult to be obtained Take, but a kind of mode being verified can be easy to, it is used to ensure that the block of generation meets certain data characteristics, prevents number According to being forged or distort.And rights and interests prove that mechanism is the mode that another is reached common understanding.Such as in the block linkwork of bit coin In system, prove that " digging ore deposit " is based on the volume of holding of currency in the system of mechanism based on rights and interests.
(4), intelligent contract.Traditional contract refers to that both sides or multilateral accord do or do not do something to exchange some things for, Each party must trust can fulfil obligations each other.And intelligent contract need not trust each other, because intelligent contract is not only by code It is defined, is also to be enforced by code, it is fully automated and cannot intervene.
The present invention shares this field for collage-credit data, it is proposed that a kind of collage-credit data based on block chain is shared and hands over Easy system.Wherein, shared using the P2P of block chain, (i.e. peer-to-peer computer network is the collage-credit data with transaction system bottom A kind of Distributed Application framework that task and workload are distributed between fellow, is that P2P computing model is formed in application layer A kind of networking or latticed form) network structure, each node contain the unique collage-credit data shared platform of this programme with And the bottom block catenary system of the block chain technology for using.
Shared the invention provides the collage-credit data based on block chain and transaction system, as shown in Fig. 4~figure, the reference Data sharing includes the network node of at least two P2P with transaction system, and the network node includes bottom block catenary system And collage-credit data shared platform on the bottom block catenary system is operated in, the collage-credit data shared platform includes:
Data sharing module, for the shared reference metadata of data set provider;
Data evaluation module, the reference metadata for providing data set provider is evaluated;
Data query transaction modules, reference metadata is inquired about for demand data person, and for being handed over data set provider Easily;
Block chain adaptation layer, for collage-credit data shared platform to be fitted into bottom block catenary system.
The data set provider calls data sharing module to upload reference metadata and carry out data record;The data are needed The person of asking calls data query transaction modules to inquire about reference metadata, and is traded with data set provider, the reference transaction of generation Data;The block chain adaptation layer is broadcasted reference metadata or reference transaction data, is obtaining the network more than 50% After node verification, newly-generated reference metadata or reference transaction data is stored into bottom block catenary system.
As shown in fig. 6, the collage-credit data shared platform includes data sharing module, data query transaction modules, data Evaluation module, member management module, key management distribution module and block chain adaptation layer.It is used to fit using block chain adaptation layer Realized with different bottom block chain technologies so that system can not rely on the specific block chain technology of bottom.
Collage-credit data of the invention is shared to be included with the most crucial module of transaction system:Data sharing module and data query Transaction modules, it is the core of whole system.Secondly, data evaluation module is used to evaluate data, it is possible to increase platform The quality of data.Member management module and key management distribution module are basic modules, and block chain adaptation layer module can make Obtain this programme and do not rely on specific bottom block chain technical implementation way.
Preferably, the collage-credit data shared platform also includes key management distribution module, and mould is distributed in the key management Block is used to manage corresponding pass of the ID (including data set provider, demand data person or data evaluation person) between public key System, while it can also generate key pair, and secure distribution to associated user.
The block chain adaptation layer includes common recognition algorithm adaptation module, data adaptation module and intelligent contract adaptation mould Block.Preferably, the common recognition algorithm adaptation module goes out the common interface of a set of common recognition algorithm using abstract common recognition algorithm abstraction, and According to underlying algorithm matching adapter;The adapter at least includes that work proves that algorithm adapter, rights and interests prove algorithm adaptation Device.Platform can take out the common interface of a set of common recognition algorithm, while different underlying algorithms are adapted to using different adapters, As shown in Figure 7.
The abstract common recognition algorithm mainly includes two abstraction interfaces:
a)ProofgenerateProof():The interface is used to generate to be proved, the proof is used in generation block;
b)Block generateBlock(Proof p,...args):According to proof generation block.
By taking the block chain technology for being derived from bit coin as an example, its generation proves to be exactly the process of " digging ore deposit "." digging ore deposit " Exactly find a value with following characteristics:With SHA-256 twice hashed calculating after, obtain hashed value with several 0 Beginning.The generateProof adaptation realizations of that bit coin block chain technology are exactly to find such value.And bit coin block chain GenerateBlock realize being exactly according to the hashed value dug and other data groups are into a block and are stored in block chain In.
Preferably, the abstract model of the data adaptation module definition block chain data, and according to block chain data form It is adapted to.Bottom block chain data there is also different realizations, by defining the abstract model of block chain data, shielding bottom Difference.Different adaptation modules are defined simultaneously is adapted to different block chain data forms, the block chain data lattice of such as bit coin Formula, the block chain data form in ether mill.
Preferably, the abstract model of the intelligent intelligent contract of contract adaptation module definition, and according to the reality of intelligent contract Existing mode is adapted to.Likewise, bottom intelligence contract there is also different realizations, by the abstract mould for defining intelligent contract Type, shields the difference of bottom.The different intelligent contracts of different adaptation modules adaptations are defined simultaneously realizes technology, such as ether mill Intelligent contract.
Storage mainly has three class data in bottom block chain:Reference metadata, reference transaction data and reference evaluation Data.Data structure substantially is as follows:
[type, data]
Wherein, type is used to identify the type of the data, can be represented with data dictionary.Data be then reference metadata, Reference transaction data or reference evaluating data, its schematic diagram are as shown in Figure 8.
In order to ensure the rights and interests of data owner, storage would is that reference unit in the collage-credit data of collage-credit data shared platform Data, form is as follows:
[type, principal mark knows hashed value, and partial data hashed value, data genaration timestamp, versions of data number, data are provided Person ID, data set provider partial data access interface list information, data set provider signature]
For example:[001 (type), d84ec802c340723837c20aff27b8cafd (principal mark knowledge hashed value), 73f56896e2be166695e47d6f91da80f7 (partial data hashed value), 61436073600000 (data genaration times Stamp), v0.0.1 (version number), 15Xgq5xjUf77ibHZkJu9qKPbw9jPKNeCt1 (data set provider ID), https:// Www.madailicai.com/api/users/ { id }/edu (data set provider partial data access interface list information), IEYEARECAAYFAjdYCQoACgkQJ9S6ULt1dqz6IwCfQ7wP6i (data set provider signature)]
Wherein, d84ec802c340723837c20aff27b8cafd is the MD5 hashed values of someone ID card No..
73f56896e2be166695e47d6f91da80f7 is " ID card No.:The MD5 hashed values of previous graduate college ".
61436073600000 timestamps represent 2016-10-100:00:00.
IEYEARECAAYFAjdYCQoACgkQJ9S6ULt1dqz6IwCfQ7wP6i is that data set provider uses private key pair This reference content metadata (not including signature section) carries out the value obtained after signature operation, and third party can be carried using data The public key of donor carries out whether checking data have the data set provider to provide.
It is below reference metadata type explanation:
Type:The type of the collage-credit data can be represented with data dictionary, such as 0001 represents personal highest educational background.
Principal mark knows hashed value:Principal mark is known for the uniquely tagged data owner, such as personal identity card ID, and name adds hand Machine number, Business Registration Number or unified social credibility code etc..The hash function (such as MD5) of principal mark knowledge standard is obtained only One mark, the unique mark is irreversible, i.e., know from the anti-principal mark of releasing of unique mark.
Partial data hashed value:Data set provider can obtain reference partial data standard Hash functions (such as MD5) One hashed value, as digital signature, data access person can verify what is provided after data set provider with this hashed value Whether initial data there is change.
Data genaration timestamp:For indicating time during data genaration, user is facilitated to be selected.
Versions of data number:Because the same initial data that same data set provider provides change over time, data May change, therefore be made a distinction with version number, the order for indicating modification.
Data set provider ID:Equivalent to bit coin wallet address, for the unique identification data supplier in platform.
Data set provider partial data access interface list information:Data user needs to obtain complete initial data Will by call data set provider provide interface, this interface message include |input paramete, interface access method and output tie Really.It is related to process of exchange in query process simultaneously, therefore can also includes data trade interface message.
Data set provider is signed:Data set provider can be signed using the key of oneself to the reference metadata shared, And data consumer can be verified using the public key of data set provider.
The collage-credit data shared platform is operated on bottom block catenary system, and bottom region is called by block chain adaptation layer The function of block catenary system.Wherein, data sharing module can provide a series of interface for the shared reference metadata of data set provider, Its idiographic flow is as shown in figure 9, comprise the following steps that:
A) data set provider assembles reference metadata according to form defined above.
B) data set provider calls the upload interface of data sharing module to upload reference metadata.
C) the data sharing module call common recognition algorithm adaptation module carry out data record.
D) the common recognition algorithm adaptation module periodically obtains block according to selected common recognition algorithm.
E) while algorithm adaptation module of knowing together can be broadcasted reference metadata, the network node more than 50% is being obtained After checking, newly-generated reference metadata will be deposited into newly-generated block.
F) newly-generated block can finally call data adaptation module to be written in block chain.
G) final block information is returned to data sharing module by common recognition algorithm adaptation module.
H) final block information is returned to data set provider by data sharing module.
Further, data query transaction modules can provide a series of interface and inquire about reference metadata for demand data person, And be traded with data set provider, transaction results can be also deposited into bottom block catenary system.The form of transaction data is as follows:
[data set provider ID, demand data person ID, partial data hashed value, data trade timestamp, transaction value, number Signed according to supplier, demand data person signature]
Data set provider ID:Equivalent to bit coin wallet address, for the unique identification data supplier in platform.
Demand data person ID:Equivalent to bit coin wallet address, for the unique identification data demander in platform.
Partial data hashed value:The hashed value of the complete collage-credit data that data set provider provides.
Data trade timestamp:Hand over the incident time.
Transaction value:The price of data trade.
Data set provider is signed:Data set provider can use the key of oneself to transaction data (not including data set provider Signature and data demander signature) signed.
Demand data person signs:Demand data person can use the key of oneself to transaction data (not including data set provider Signature and data demander signature) signed.
Preferably, the demand data person is carried out the step of data query is concluded the business as shown in Figure 10, and its idiographic flow is as follows:
A) principal mark of demand data person data according to demand knows (such as identity card, corporate social credit Unicode), raw Into hashed value.
B) demand data person knows according to principal mark hashed value and the type of demand data, call in data query transaction modules Query interface.
C) data query transaction modules call data adaptation module, the hashed value that the data adaptation module is known according to principal mark With the type of demand data, the reference metadata being stored on local block chain is inquired about.
If d) inquiring corresponding reference metadata, reference metadata can be returned to number by block chain data adaptation module It is investigated that asking transaction modules.
E) data query transaction modules can be by the reference metadata person that returns to demand data.
F) data set provider ID of the demand data person in the reference metadata for returning obtains data set provider Public key;Specifically, the public key can be obtained by key management distribution module.Certainly, those skilled in the art are it is to be understood that institute Stating public key can also be by being manually entered or the usual manner such as mail is obtained.
G) signature of the demand data person according to data set provider in the public key verifications reference metadata of data set provider.
H) after data verification is correct, going on an expedition data set provider partial data of extract in cell data of demand data person is visited Ask the list information of interface.
I) demand data person sends access request according to data set provider partial data access interface, the access request Principal mark knowledge, data type, demand data person ID and demand data person signature are contained in data, the data of access request can use number It is encrypted according to the public key of supplier.
J) after data set provider receives inquiry request, it is decrypted with private key.
K) data set provider extracts the demand data person ID in inquiry request, is then obtained from key management distribution module The public key of demand data person.In the same manner, data set provider can also be by being manually entered or the usual manner such as mail obtains data The public key of demander.
L) data set provider inquires about the signature of demand data person in data according to the public key verifications of demand data person.
M) after data set provider is verified, with complete collage-credit data, transaction value and data set provider signature etc. Information calls intelligent contract adaptation module to generate an intelligent contract for transaction.
N) data set provider is by the intelligent contract person that issues demand data.
O) demand data person is to price after confirming, the intelligent contract Signature Confirmation using private key to concluding the business.
P) the intelligent contract will generate a transaction data, be broadcast to each network node, treat that 51% node is true After recognizing, after the checking of the network node more than 50% is obtained, the data adaptation module is called to be written in block chain.
Q) while the intelligent contract can be by the partial data person that issues demand data, and from the transfer of demand data person's account about Deposit volume completes transaction in data set provider account.
Data evaluation module can provide a series of interfaces, for the wall scroll data or certain class that provide data set provider The data of type are evaluated, and generate reference evaluating data.The reference evaluating data form is as follows:
[data evaluation person ID, data set provider ID evaluate type, partial data hashed value or data type, evaluation side Method, evaluation result, data evaluation person's signature]
Data evaluation person ID:For the unique identification data estimator in platform, equivalent to bit coin wallet address.
Data set provider ID:For the unique identification data supplier in platform, equivalent to bit coin wallet address.
Evaluate type:Wall scroll evaluates the evaluation of still certain type, can be represented with data dictionary.
Partial data hashed value or data type:With the description of reference metadata, will not be repeated here.
Evaluation method:Platform can provide a series of all members all consensus evaluation method, and member can select it A kind of middle appropriate algorithm is evaluated collage-credit data.For example highest educational background data evaluation method is according to ID to specified net Station is inquired about.
Evaluation result:Specified by evaluation algorithms, the result of such as highest educational background data evaluation method is consistent or differs Cause.
Data evaluation person signs:Data evaluation person is signed using the private key of oneself to evaluating data.
Specifically, the step of data evaluation module is evaluated the reference metadata that data set provider provides is such as Under:
A) data evaluation person selects the evaluation algorithms of definition to being evaluated by handing over facile reference partial data, and Generation reference evaluating data, calls the upload interface of data evaluation module to upload reference evaluating data afterwards;Evaluate pair as if Facile reference partial data is handed over, metadata is summary.
B) the reference evaluating data is broadcast to each network node, and the network by the data evaluation module Node is checked according to evaluating data;Specifically, if the node do not have it is complete be evaluated data, it can check evaluation Whether algorithm meets the output area of evaluation algorithms if appropriate for the scene, the result for obtaining;If the node has what is be evaluated Partial data, it can then repeat evaluation algorithms, see whether result is consistent;
C) when the network node less than specified quantity is raised an objection, the data evaluation module calls the data adaptation Module notes down in bottom block catenary system reference evaluating data;When the network node more than specified quantity is raised an objection, The evaluating data will be dropped.
D) the data evaluation module returns result to data evaluation person.
Further, the collage-credit data shared platform also includes member management module, and the member management module mainly bears The person's of urging joins and departs from, while it will also provide the secure distribution of stage+module bag.
Collage-credit data of the invention is shared to use one believable collage-credit data of block chain technique construction with transaction system Shared and transaction platform, the collage-credit data is shared to use special Data Share System with transaction system, data query mechanism, Data trade mechanism and data evaluation mechanism, can attract collage-credit data owner and collage-credit data demander to use, to cause Collage-credit data supplier can obtain certain economic compensation in the case of data are protected, and collage-credit data issuer then can be with Collage-credit data is obtained, the air control level of oneself is improved.
Collage-credit data of the invention is shared can to form complementation with transaction system with existing collage-credit data, effective to expand Collage-credit data scope and the crowd of covering.After the shared success with transaction system construction of the collage-credit data, mesh can be partly solved The preceding incomplete problem of credit system, can play good supplementary function, can preferably be bank, little Dai companies, consumption Finance, network loan, big data company and other internet financial institution services reductions are because of exceeding that collage-credit data not exclusively causes Phase rate, improves business operational paradigm.
Finally it should be noted that:The above embodiments are merely illustrative of the technical solutions of the present invention rather than its limitations;To the greatest extent Pipe has been described in detail with reference to preferred embodiment to the present invention, and those of ordinary skill in the art should be understood:Still Specific embodiment of the invention can be modified or equivalent is carried out to some technical characteristics;Without deviating from this hair The spirit of bright technical scheme, it all should cover in the middle of claimed technical scheme scope of the invention.

Claims (9)

1. a kind of collage-credit data based on block chain is shared and transaction system, it is characterised in that:The collage-credit data is shared and hands over Easy system includes the network node of at least two P2P, and the network node includes bottom block catenary system and operates in institute The collage-credit data shared platform on bottom block catenary system is stated, the collage-credit data shared platform includes:
Data sharing module, for the shared reference metadata of data set provider;
Data evaluation module, the reference metadata for providing data set provider is evaluated;
Data query transaction modules, reference metadata is inquired about for demand data person, and for being traded with data set provider;
Block chain adaptation layer, for collage-credit data shared platform to be fitted into bottom block catenary system;
The data set provider calls data sharing module to upload reference metadata and carry out data record;The demand data person Call data query transaction modules to inquire about reference metadata, and be traded with data set provider, the reference transaction data of generation; The block chain adaptation layer is broadcasted reference metadata or reference transaction data, is tested the network node more than 50% is obtained After card, newly-generated reference metadata or reference transaction data is stored into bottom block catenary system.
2. collage-credit data according to claim 1 is shared and transaction system, it is characterised in that:The block chain adaptation layer bag Include common recognition algorithm adaptation module, data adaptation module and intelligent contract adaptation module.
3. collage-credit data according to claim 2 is shared and transaction system, it is characterised in that:The common recognition algorithm adaptation mould Block goes out the common interface of a set of common recognition algorithm using abstract common recognition algorithm abstraction, and according to underlying algorithm matching adapter;It is described Adapter at least includes that work proves that algorithm adapter, rights and interests prove algorithm adapter.
4. collage-credit data according to claim 2 is shared and transaction system, it is characterised in that:The data adaptation module is determined The abstract model of adopted block chain data, and be adapted to according to block chain data form.
5. collage-credit data according to claim 2 is shared and transaction system, it is characterised in that:The intelligent contract adaptation mould The abstract model of the intelligent contract of block definition, and be adapted to according to the implementation of intelligent contract.
6. collage-credit data according to claim 2 is shared and transaction system, it is characterised in that:The data set provider is shared The step of reference metadata, is as follows:
A) data set provider assembles reference metadata according to the form of definition, and calls the upload interface of data sharing module to upload Reference metadata;
B) the data sharing module calls the common recognition algorithm adaptation module to carry out data record, and the common recognition algorithm adaptation mould Root tuber periodically obtains newly-generated block according to selected common recognition algorithm;
C) the common recognition algorithm adaptation module is broadcasted reference metadata, is verified the network node more than 50% is obtained Afterwards, newly-generated reference metadata is deposited into newly-generated block, newly-generated block calls data adaptation module to write To in block chain;
D) final block information is returned to data sharing module, and the data sharing module by common recognition algorithm adaptation module Final block information is returned into data set provider.
7. collage-credit data according to claim 2 is shared and transaction system, it is characterised in that:The demand data person is carried out The step of data query is concluded the business is as follows:
A) demand data person according to demand data principal mark know generation hashed value, and according to principal mark know hashed value and demand data Type call query interface in data query transaction modules;
B) the data query transaction modules call data adaptation module, and the data adaptation module according to dissipating that principal mark is known The type queries of train value and demand data are stored in the reference metadata on local block chain;
C) reference metadata is returned to data query transaction modules, the data query transaction modules by the data adaptation module By the reference metadata person that returns to demand data;
D) data set provider ID of the demand data person in the reference metadata for returning obtains the public key of data set provider, And according to the signature of data set provider in the public key verifications reference metadata of data set provider;
E) after public key verifications, demand data person goes on an expedition and the row of data set provider partial data access interface is extracted in cell data Table information;
F) demand data person sends access request according to data set provider partial data access interface, the data of access request according to The public key of data set provider is encrypted, wherein, principal mark knowledge, data type, demand data are comprised at least in the access request Person ID and demand data person sign.
G) after access request is received, the data set provider is decrypted with private key, extracts the demand data in inquiry request Person ID, and according to demand data person in the public key verifications of demand data person inquiry data after the public key for obtaining demand data person Signature;
H) after the data set provider is verified, signed according to complete collage-credit data, transaction value and data set provider Call the intelligent contract of intelligent contract adaptation module generation transaction;
I) after confirming to transaction value, the demand data person is using private key to the intelligent contract Signature Confirmation, and institute State intelligent contract and the transaction data of generation is broadcast to each network node, verified the network node more than 50% is obtained Afterwards, the data adaptation module is called to be written in block chain, and by the partial data person that is sent to demand data.
8. collage-credit data according to claim 1 is shared and transaction system, it is characterised in that:The collage-credit data is shared flat Platform also includes key management distribution module, the corresponding pass that the key management distribution module is used to manage between ID and public key System, the key management distribution module is additionally operable to generate key pair.
9. collage-credit data according to claim 2 is shared and transaction system, it is characterised in that:The data evaluation module pair The step of reference metadata that data set provider provides is evaluated is as follows:
A) evaluation algorithms of data evaluation person's selection definition by handing over facile reference partial data to being evaluated, and is generated Reference evaluating data, calls the upload interface of data evaluation module to upload reference evaluating data afterwards;
B) the reference evaluating data is broadcast to each network node, and the network node by the data evaluation module Checked according to evaluating data;
C) when the network node less than specified quantity is raised an objection, the data evaluation module calls the data adaptation module By in reference evaluating data record to bottom block catenary system;
D) the data evaluation module returns result to data evaluation person.
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