CN107807984A - A kind of block chain network of subregion and its method for realizing subregion common recognition - Google Patents
A kind of block chain network of subregion and its method for realizing subregion common recognition Download PDFInfo
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Abstract
This application discloses a kind of block chain network of subregion, it is made up of multiple nodes；Visible authority according to each node to different transaction data, by part or all of node division in one or more subregions；It is fully visible for transaction data inside same subregion, it is invisible for transaction data between different subregions；The authority of common recognition process is participated in whole node-classifications according to each node again：The node that the common recognition process of all subregions can be participated in is overall situation common recognition node, and the node for being only capable of the common recognition process of subregion where participating in is subregion common recognition node, it is impossible to which the node for participating in any common recognition process is synchronization node；Only verified etc. transaction data to be confirmed by the subregion common recognition node of global common recognition node and place subregion.The application limits the range of nodes for participating in common recognition process, so that waiting the spread scope of transaction data to be confirmed to be substantially reduced, improves data-privacy protecting effect by carrying out subregion and classification to each node in block chain network.
Description
Technical field
The application is related to a kind of block chain (Blockchain) technology, more particularly to wherein reciprocity number of deals to be confirmed
The common recognition mechanism (consensus mechanism) verified according to/candidate block.
Background technology
The Ministry of Industry and Information Technology's issue on October 18th, 2016《Chinese block chain technology and application development white paper》In,
By block chain be defined as it is a kind of without intermediary participate in, can also be maintained between the participant of mutual mistrust or weak trust it is a set of can not
The technology for the account book record distorted.First, block chain is a kind of chain (chain) shape data knot with block (block) for unit
Structure, each block are linked together with front and continued block by way of cryptography proof, as shown in Figure 1.Secondly, block chain
It is a kind of shared distributed account book (distributed ledger) of the whole network.In many scenes, block chain and distributed account book
The two technical terms have identical meanings.
Typically, block chain technology is used for by all or part of node of P2P networks (peer-to-peer network)
According to the new block of certain common recognition proof of algorithm, increased newly by the new block of checking to the end of block chain data structure.Adopt
Block chain network is thus referred to as with the P2P networks of block chain technology.The node for referring to participate in many ways know together under preset rules, leads to
Cross the process that multiple node interactions are reached an agreement to some data, behavior or flow.Common recognition mechanism is to define the calculation of common recognition process
Method, agreement and rule.
Referring to Fig. 2, this is existing block chain network one, each node therein can participate in common recognition process, because
This each node is common recognition node.The Typical Representative of this block chain network is some publicly-owned chain (public
), such as block chain network used in bit coin (bitcoin) blockchain.
Referring to Fig. 3, this is the method that existing block chain network one realizes common recognition, comprise the following steps.
Step 301：One or more nodes by etc. transaction data to be confirmed be broadcast to other nodes.
Step 302：The part or all of node of transaction data to be confirmed such as receive by the numbers of deals to be confirmed such as some
According to a candidate block is packaged as, typically the transaction data to be confirmed such as interior for a period of time is packed.Packed time
Constituency block is broadcast to other nodes again.
Step 303：The part or all of node for receiving candidate block is verified using common recognition algorithm to candidate block.
In existing block chain network one, each node stores all of the whole network generation with block chain data structure records
Transaction data, i.e., each node store complete set, consistent account book record.
Referring to Fig. 4, this is the method that existing block chain network one realizes storage, comprise the following steps.
Step 401：If candidate block just turns into legal new block, each node will by the checking for algorithm of knowing together
Legal new block is added to the end of the block chain data structure of itself storage.
Step 402：If candidate block by the checking for algorithm of knowing together, does not just turn into legal new block, each node
The candidate block is not added at the end of the block chain data structure of itself storage.
The step 401 can seamlessly be connected after step 303.
Referring to Fig. 5, this is existing block chain network two.Node therein is divided into two classes：Common recognition process can be participated in
Node be referred to as know together node, it is not possible to the node for participating in common recognition process is referred to as synchronization node.The typical case of this block chain network
Representative is some alliance's chains (Consortium blockchain) or privately owned chain (Private blockchain).
Referring to Fig. 6, this is the method that existing block chain network two realizes common recognition, comprise the following steps.
Step 601：Each node in block chain network is either defined as to common recognition node or is defined as synchronization node.
In other words, the arbitrary node in block chain network necessarily belongs to one kind in the class of the above two.
Step 602：One or more nodes by etc. transaction data to be confirmed be broadcast to common recognition node.
Step 603：The part or all of common recognition node of transaction data to be confirmed such as receive by the friendships to be confirmed such as some
Easy data are packaged as a candidate block, and typically the transaction data to be confirmed such as interior for a period of time is packed.It is packed
Candidate block be broadcast to again other common recognition node.
Step 604：The part or all of common recognition node for receiving candidate block is tested candidate block using common recognition algorithm
Card.
In existing block chain network two, either know together node or synchronization node, each node is with block chain number
The All Activity data of the whole network generation are stored according to structure, i.e., each node stores complete set, consistent account book record.
Referring to Fig. 7, this is the method that existing block chain network two realizes storage, comprise the following steps.
Step 701：If candidate block just turns into legal new block by the checking for algorithm of knowing together.The new block quilt
It is broadcast to each synchronization node or is broadcast to each node of the whole network, the new block is added to by each common recognition node and synchronization node
The end of the block chain data structure of itself storage.
Step 702：If candidate block by the checking for algorithm of knowing together, does not just turn into legal new block, each common
Know node or synchronization node does not add the candidate block at the end of the block chain data structure itself stored.
The step 701 can seamlessly be connected after step 604.
Referring to Fig. 8, this is the method that existing block chain network one or block chain network two realize inquiry, including it is as follows
Step.
Step 801：Each node in block chain network is stored with the trade fingerprinting of whole historical trading datas.Transaction
Fingerprint can be stored in each block of the block chain data structure of each node storage, can also be stored in block chain data knot
In each node its memory beyond structure.
The step is, for example, that the transaction data to be confirmed such as some are packaged as into candidate in step 302 or in step 603
During block, corresponding transaction is calculated by the part or all of node of the execution packing transaction data to be confirmed to each pen etc. and referred to
Line, and be packaged in candidate block.
Or the step is, for example, that legal new block is added into block chain number in step 401 or in step 701
According to structure end when, each in new block friendship is stored beyond block chain data structure by each node for performing storage
The trade fingerprinting of easy data.
Step 802：Arbitrary node in block chain network receives the inquiry request to historical trading data, the inquiry
The trade fingerprinting of historical trading data to be checked is comprised at least in request.
Step 803：The friendship for all historical trading datas that the node stores the trade fingerprinting in inquiry request with itself
Easy fingerprint is compared.
Step 804：If finding identical trade fingerprinting, show that the trade fingerprinting in inquiry request belongs to a certain history
Transaction data, return to successful inquiring.Now alternatively show the part or all of content of this historical trading data.
Step 805：If not finding identical trade fingerprinting, show that the trade fingerprinting in inquiry request is not belonging to any go through
History transaction data, return to inquiry failure.
The trade fingerprinting refers to the fingerprint value obtained by transaction data according to AES, it is impossible to reversely derives transaction
Data, it is only capable of for verifying that transaction data whether there is and whether be tampered.Preferably, the AES should cause difference
Transaction data correspond to different trade fingerprintings, i.e., must not be produced after different encrypted transaction datas identical transaction refer to
Line.Less preferably, different transaction data occurs under the minimum probability of the AES permission and corresponds to identical trade fingerprinting
Situation.For example, hash function (Hash fuction, also referred to as hash function) just belong under minimum probability may occur it is different
Correspond to the situation of identical ciphertext in plain text.In block chain network, arbitrary node by etc. transaction data broadcast to be confirmed simultaneously
Be packaged as before candidate block, will first calculate etc. transaction data to be confirmed cryptographic Hash whether recorded with account book in history
The cryptographic Hash of transaction data coincides, and if overlapping situation, then the transaction data to be confirmed such as judgement is illegal, thereby guarantees that
One-to-one relationship between transaction data and cryptographic Hash.
In the existing block chain network of above two, the transaction data of transmission and storage is all to disclose visible, is only passed through
The mode of " pseudo- anonymous " carries out certain secret protection to both parties.The existing block chain network of above two is being known together
During, candidate block can be broadcast at least each common recognition node, therefore the numbers of deals to be confirmed such as all in candidate block
All it is visible according to for each common recognition node.The existing block chain network of above two is legal in storing process is carried out
New block can be broadcast to each node, therefore All Activity data are all visible for each node in new block.Above-mentioned two
For the existing block chain network of kind in query process is carried out, each node can be in the friendship of whole historical trading datas of itself storage
Inquiry operation is independently carried out to inquiry request in easy fingerprint, therefore historical trading data is all visible for each node.
In many application scenarios, transaction data, the transaction data by proof of algorithm of knowing together confirmed no matter is to wait for, or history is handed over
Easy data may all include substantial amounts of trade secret and interests, and these transaction data are it is not desirable that be exposed to incoherent section
Point.In order to meet all kinds of business rules and regulatory requirements, protected also for good data-privacy is provided, some improved blocks
Chain technology is suggested.
There is the concept that a kind of existing block chain network introduces light node (light client).In addition to light node
Other nodes will download the account book record of complete block chain data structure, and light node only needs to download block chain data structure
In each block block head (block header).The storage capacity requirement of light node can be so reduced, also makes transaction
Data are invisible to light node.However, transaction data is for other nodes in addition to light node or visible.Due to light
Historical trading data is not stored in node, therefore inquiry can not be realized.
The Chinese invention patent application that application publication number is CN106534097A, data of publication of application is on March 22nd, 2017
《Authority method of control and system based on the transaction of block chain》In, realize block by the way of transaction data is encrypted
Information privacy demand in chain network.Only authorization node could obtain deciphering parameter, so as to the transaction data after being decrypted.
Unauthorized node can only be encrypted after transaction data, lacking deciphering parameter thus can not decrypt.The shortcomings that program, is：
All Activity data are still to all node broadcasts of block chain, although only specific authorization node can be decrypted, transaction
Summary be all application scenarios transparent, thus that higher secret protection requirement can not be met for all nodes.Each mandate
Node needs that transaction data is decrypted, the time-consuming promptness for influencing whether trade confirmation of decryption oprerations.
The Chinese invention patent application that application publication number is CN106779707A, data of publication of application is on May 31st, 2017
《Monitoring and managing method, the apparatus and system of digital cash transaction data based on block chain》In, using transaction data is encrypted,
Distinguish and participate in user with supervising the mode of user to realize the information privacy demand in block chain network.Transaction data can only be joined
It can not be decrypted with the user of transaction and supervision user's decryption, other users.The shortcomings that program, is similar with CN106534097A.
The content of the invention
Technical problems to be solved in this application are to provide a kind of block chain that can realize strict data-privacy protection
Network.Therefore, the application also provides the method that the block chain network realizes subregion common recognition.
In order to solve the above technical problems, this application provides a kind of block chain network of subregion, it is made up of multiple nodes；Root
Visible authority according to each node to different transaction data, by part or all of node division in one or more subregions；It is same
It is fully visible for transaction data inside subregion, it is invisible for transaction data between different subregions；Participated in again according to each node
The authority of common recognition process is to whole node-classifications：The node that the common recognition process of all subregions can be participated in is global common recognition node, only
The node of the common recognition process of subregion where participating in is subregion common recognition node, it is impossible to which the node for participating in any common recognition process is synchronous
Node；Only verified etc. transaction data to be confirmed by the subregion common recognition node of global common recognition node and place subregion.
Further, each node in same subregion can see the transaction data of transaction in the subregion, one point
Each node in area cannot see that complete transaction data for the transaction in other subregions and can only see trade fingerprinting.It is first
First, subregion internal data is shared, and need to such as exclude outside some data some nodes, should consider in subregion by these nodes
Other subregion.Secondly, data isolation between subregion, but fingerprint value is retained to inquire about transregional transaction.Trade fingerprinting without
Method is counter to release transaction data, therefore does not influence the safe and secret of transaction data.Again, global common recognition node can see all points
The transaction data of All Activity in area.
Further, transaction data to be confirmed is waited first to be beaten by the subregion common recognition node of global common recognition node and place subregion
Wrap and node is known together according to common recognition algorithm progress by the subregion of global common recognition node and place subregion again for candidate block, candidate block
Checking.From efficient angle is put forward, it is inefficient to carry out checking according to common recognition algorithm to some transaction data.Generally
Be by a period of time same subregion etc. transaction data to be confirmed be packaged as candidate block, then to candidate block according to common recognition
Algorithm is verified, can so improve common recognition efficiency.
Present invention also provides the method that a kind of block chain network of subregion realizes subregion common recognition, comprise the following steps.
(1) global common recognition node is determined in each node of block chain network.
(2) subregion is carried out according to the visible authority to different transaction data to the node in addition to global node of knowing together；Together
It is fully visible for transaction data inside one subregion, it is invisible for transaction data between different subregions.
(3) node in addition to global node of knowing together is divided into subregion common recognition node and synchronization node.
(4) one or more nodes by etc. transaction data to be confirmed be broadcast to each global common recognition node and same point
Subregion common recognition node in area.
(5) portion in all or part of global common recognition node and same subregion of transaction data to be confirmed such as receive
Divide or the transaction data to be confirmed such as some are packaged as a candidate block, packed candidate by whole subregions common recognition node
Block is broadcast to the subregion common recognition node in each global common recognition node and same subregion again.
(6) receive all or part of in all or part of global common recognition node and same subregion of candidate block
Subregion common recognition node is verified using common recognition algorithm to candidate block.
Further, the step (1) to the order of step (3) arbitrarily adjusts, or carries out simultaneously.
Further, the step (1) to step (3) is changed to step (1a) to step (2a).
(1a) carries out subregion to each node in block chain network according to the visible authority to different transaction data；Same point
It is fully visible for transaction data inside area, it is invisible for transaction data between different subregions.
Global common recognition node, subregion common recognition node and synchronization node are determined in each node of (2a) in block chain network.
The block chain network of above-mentioned subregion and its realize subregion common recognition method obtain have the technical effect that：By to area
Each node in block chain network carries out subregion and classification, and the node for participating in common recognition process is limited in into global common recognition node and each
In the range of the subregion common recognition node of subregion where transaction data, so that waiting the spread scope of transaction data to be confirmed big
It is big to reduce, improve data-privacy protecting effect.Compared with the existing block chain technology for realizing data-privacy protection, it is not present
The risk that transaction summarization is arbitrarily propagated, it is not required that undertake time-consuming institute's increased trade confirmation time of decryption oprerations.
Brief description of the drawings
Fig. 1 is the schematic diagram of block chain data structure.
Fig. 2 is the schematic diagram of existing block chain network one.
Fig. 3 is the flow chart that existing block chain network one realizes common recognition method.
Fig. 4 is the flow chart that existing block chain network one realizes storage method.
Fig. 5 is the schematic diagram of existing block chain network two.
Fig. 6 is the flow chart that existing block chain network two realizes common recognition method.
Fig. 7 is the flow chart that existing block chain network two realizes storage method.
Fig. 8 is the flow chart that existing block chain network one or existing block chain network two realize querying method.
Fig. 9 is the schematic diagram of the block chain network of the application subregion.
Figure 10 is the flow chart that the block chain network of the application subregion realizes the embodiment one of subregion common recognition method.
Figure 11 is the flow chart that the block chain network of the application subregion realizes the embodiment two of subregion common recognition method.
Figure 12 is the structure comparison schematic diagram between the deformation block that the application introduces and traditional block.
Figure 13 is that the block chain network of the application subregion realizes the flow chart of partitioned storage method.
Figure 14 is that the block chain network of the application subregion realizes the flow chart of subregion querying method.
Embodiment
Referring to Fig. 9, this is a kind of block chain network for subregion that the application provides.With existing various block chain networks
Identical, the block chain network of the application is also to be made up of multiple nodes, and each node is the electricity for having computing and store function
Sub- equipment or module.Such as each node is one or one group of computer or is wherein to have operation independent and store function
A module.It is following two aspects with existing block chain network difference.First, the application is according in block chain network
Different nodes are to the visible authorities of different transaction data, by part or all of node division in one or more subregions.It is same
Each node in subregion can see the transaction data of transaction in the subregion, i.e., is for transaction data inside same subregion
It is fully visible.Each node in one subregion cannot see that complete transaction data for the transaction in other subregions and can only
See trade fingerprinting, i.e., be sightless for transaction data between different subregions.Secondly, common recognition process is participated according to each node
Authority whole nodes are classified.Each node is divided into following three class：The section of the common recognition process of all subregions can be participated in
Point is overall situation common recognition node, and the node for being only capable of the common recognition process of subregion where participating in is subregion common recognition node, it is impossible to is participated in any
The node of common recognition process is synchronization node.Only it is total to etc. transaction data to be confirmed by the subregion of global common recognition node and place subregion
Know node to be verified.The block chain network that the application provides can be used for alliance's chain or privately owned chain.
After the application carries out subregion to the node in block chain network, each node can also may be used only in a subregion
With simultaneously in multiple subregions.Each node can add new subregion as needed, or exit place subregion.Therefore an area
The number of nodes that possessed number of partitions, each subregion are included in block chain network all may time to time change.
After the application classifies to the node in block chain network, overall situation common recognition or is thought in all subregions node
In, or think not in any subregion.For knowing together node and synchronization node to subregion, a node can be only at one point
In area, also can simultaneously in multiple subregions, classification in multiple subregions can with it is identical, can also be different.For example, A nodes are only
Subregion common recognition node is used as in subregion one, is only eligible to participate in the common recognition process of subregion one.The B node only conduct in subregion two
Synchronization node, it is impossible to participate in the common recognition process of any subregion.C nodes are known together in subregion one and subregion two as subregion simultaneously
Node, while it is eligible to participate in the common recognition process of subregion one and subregion two.The conduct in subregion one and subregion three simultaneously of D nodes
Synchronization node, it is impossible to participate in the common recognition process of any subregion.E nodes are both used as subregion common recognition node in subregion two, while
Synchronization node is used as in subregion three, is only eligible to participate in the common recognition process of subregion two.
Preferably, the global administration person in business scenario or global regulator are as global common recognition node, in business scenario
Partial service manager, part or all of business participant as subregion know together node.If it is necessary, some nodes can be
Classification is changed between overall situation common recognition node, subregion common recognition node, synchronization node.
In the first embodiment, subregion and classification are carried out to each node according to different types of service.Assuming that some block
Chain network is the alliance's chain formed with each financial institution, and four banks, E sections are represented respectively including at least tetra- nodes of A, B, C, D
Point represents banking regulator.There is the business contact (being referred to as business one) of cross-border payment between wherein between tri- nodes of A, B, C,
Need the real-time processing using block chain network progress interbank settle accounts calculation.B, tri- nodes of C, D are then made using block chain network
Document for mutual credit short-term loan at daily interest (being referred to as business two) deposits card.As soon as being so directed to business, there are tri- nodes of A, B, C to form and divide
Qu Yi.For business two, just there are tri- nodes of B, C, D to form subregion two.E nodes are as global common recognition node.
In a second embodiment, subregion and classification are carried out to each node according to different data access authorities.Assuming that some
Block chain network is some data storage mechanism, is that enterprises and institutions, government organs etc. provide data cloud storage, each unit permits
Many individual users are accessed respectively with the identity of different nodes and modification data.Because commensurate does not have different data access rights
Limit, at least subregion should be divided according to the data access authority of not commensurate.Further, in an internal institution according to user
Different departments, grade, authority etc. can also carry out more careful subregion and classification.
In the third embodiment, subregion and classification are carried out to each node according to different departments.Assuming that some block link network
Network is the different departments composition of some unit, and the data of personnel department and Finance Department are usually required to other in unit management
Department maintains secrecy, and administrative department is it should be understood that the traffic-operating period and data of all departments.Therefore personnel department can be included each
Node is divided equally in a subregion, and each node that Finance Department is included is divided equally in another subregion, and administrative department is wrapped
Each node contained is as global common recognition node.
In the fourth embodiment, subregion and classification are carried out to each node according to different groups.In grouping, community
In tissue, shared information is allowed in each group, each community, but often have the demand of information privacy to other groups.Therefore can incite somebody to action
Subregion is distinguished by each group, and each node carries out information sharing in group.
In the 5th embodiment, subregion and classification are carried out to each node according to different classes of assets.Assets and its transaction
Data generally have high security requirements, and distribution, circulation for same class of assets, transaction data need to establish a subregion,
Node only in subregion will be seen that, access associated data.Between the subregion of different classes of assets, information should be mutually only
Vertical, mutual secrecy.If there is regulator, regulator can be arranged to global common recognition node, to meet supervision demand.
In the sixth embodiment, subregion and classification are carried out to each node according to different geographical position.Many application scenarios
Under, for ease of management or data statistics, data management is often carried out in units of geographical position.Therefore can be by same geographical position institute
Comprising each node be arranged to a subregion, can carry out data sharing between each node in subregion.Then enter between different subregions
Row information maintains secrecy.
When existing block chain network equity transaction data to be confirmed is verified according to common recognition algorithm, entirety common recognition section
Point is all eligible to participate in during common recognition.The reciprocity transaction data to be confirmed of the block chain network of the application subregion is according to common recognition
When algorithm is verified, the subregion common recognition node of subregion where only global common recognition node and such transaction data to be confirmed has
Qualification is participated in during common recognition.This just greatly reduces the exposure range of such transaction data to be confirmed, hidden for data
Private protection is extremely advantageous.
Preferably, the directly not reciprocity transaction data to be confirmed of the block chain network of the application subregion is according to common recognition algorithm
Verified, but by etc. transaction data to be confirmed first where global common recognition node and such transaction data to be confirmed point
The subregion common recognition node in area is packaged as candidate block, and candidate block is again by overall situation common recognition node and such transaction data to be confirmed
The subregion common recognition node of place subregion is verified according to common recognition algorithm.This does not change such transaction data to be confirmed
Exposure range, still with good data-privacy protecting effect.
Referring to Fig. 10, the block chain network that this is the application subregion realizes the embodiment one of subregion common recognition method, including
Following steps.
Step 1001：Global common recognition node is determined in each node in block chain network.Overall situation common recognition node can join
With the common recognition process of all subregions.
Step 1002：To the node in block chain network in addition to global node of knowing together according to different transaction data can
See that authority carries out subregion.Node inside same subregion can see the transaction data of transaction in the subregion, different subregions
Between cannot see that the transaction data of other subregions.
Step 1003：Node in block chain network in addition to global node of knowing together is divided into subregion common recognition node and synchronization
Node.Subregion common recognition node and synchronization node can be only in a subregions, can also be simultaneously in multiple subregions, and more
There can be identical or different classification in individual subregion.Subregion common recognition node is only capable of the common recognition process of subregion where participating in, synchronous section
Point can not participate in any common recognition process.
Step 1004：One or more nodes (referred to as initiating node) by etc. transaction data to be confirmed be broadcast to it is each complete
Office's common recognition node and the subregion common recognition node with initiation node in same subregion.
Step 1005：The all or part of global common recognition node of transaction data to be confirmed and the same subregion such as receive
The transaction data to be confirmed such as some are packaged as a candidate block by interior all or part of subregion common recognition node, are typically
By transaction data to be confirmed is packed in same subregion etc. in a period of time.Packed candidate block is broadcast to each again
Overall situation common recognition node and the subregion common recognition node with initiation node in same subregion.
Step 1006：Receive all or part of global common recognition node of candidate block and the part in same subregion or
Whole subregion common recognition nodes are verified using common recognition algorithm to candidate block.Conventional common recognition algorithm mainly includes：It is practical
Byzantine failure tolerance (practical byzantine fault tolerance, PBFT) algorithm, Paxos algorithms, proof of work
(proof-of-work, PoW) algorithm, rights and interests prove that (proof-of-stake, PoS) algorithm, commission rights and interests prove
(delegated proof-of-stake, DPoS) algorithm, activity prove (Proofofactivity, PoA) algorithm, burning card
Bright (proofof burn, PoB) algorithm, ability prove that (proofofcapacity, PoC) algorithm, elapsed time prove
(Proofofelapsed time) algorithm etc..
Above-mentioned steps 1001 to step 1003 can arbitrarily adjust sequencing, or carry out simultaneously, such as following implementation
The mode of texturing that example two provides.
Figure 11 is referred to, this is the embodiment two for the method that the block chain network of the application subregion realizes subregion common recognition.It is real
Apply example two and the step 1001 in embodiment one to 1003 is changed to step 1101 to step 1102, remaining is unchanged.
Step 1101：Subregion is carried out according to the visible authority to different transaction data to each node in block chain network.
Node inside same subregion can see the transaction data of transaction in the subregion, and other are cannot see that between different subregions
The transaction data of subregion.
Step 1102：Global common recognition node, subregion common recognition node and synchronization are determined in each node in block chain network
Node.Overall situation common recognition node can participate in the common recognition process of all subregions, and subregion common recognition node is only capable of being total to for subregion where participating in
Knowledge process, synchronization node can not participate in any common recognition process.Subregion know together node and synchronization node can only in a subregion,
Can also be simultaneously in multiple subregions, and can have identical or different classification in multiple subregions.
In existing block chain network, each node is all with the All Activity number of block chain data structure storage the whole network generation
According to that is, each node stores complete set, consistent account book record.It is only global in the block chain network of the application subregion
All transaction data by checking for being occurred with block chain data structure storage the whole network of common recognition node, subregion common recognition node and together
Walk node and occurred with subregion where block chain data structure storage and be all by the transaction data of checking and other subregions
The trade fingerprinting of all transaction data by checking occurred.This partitioned storage scheme greatly reduces the friendship by checking
The exposure range of easy data, it is extremely advantageous for data-privacy protection.
Preferably, directly storage is not referred to the block chain network of the application subregion by the transaction data verified or transaction
Line, but store legal new block or its deformation block.For some subregion knows together node or synchronization node, when legal
Transaction data in new block is the transaction data of subregion where the node, i.e., legal new block is the subregion where the node
It is packaged as candidate block and by proof of algorithm of knowing together, then the node stores legal new block.When legal new block
In transaction data be other subregions transaction data, i.e., legal new block is to be packaged as candidate block by other subregions and led to
Cross common recognition proof of algorithm, then the node stores the deformation block of the legal new block.In other words, only global common recognition
New block of the node with all subregions of block chain data structure storage by proof of algorithm of knowing together, subregion common recognition node and synchronous section
Point passes through common recognition with subregion where block chain data structure storage by the new block and other subregions for proof of algorithm of knowing together
Deformation block corresponding to the new block of proof of algorithm.This does not change the exposure range of the transaction data by verifying, still has
There is good data-privacy protecting effect.
Referring to Fig. 10, left side is traditional block structure, right side is deformation block structure.Each block includes block
Head and block main body.Following content is for example stored with block head.
--- father's Hash, for specifying the previous block of the block.
--- Mei Keer (Merkle) root, it is that the All Activity data in the block are organized as Mei Keer trees (Merkle
Tree), Hash (Hash) value of the numerical value of the Mei Keer trees.Due to the characteristic of Mei Keer trees, if any any one in the block
Or multiple transaction data change, the cryptographic Hash of the tree root for the Mei Keer trees recalculated all by with original Mei Keer trees
The cryptographic Hash of tree root is different.
--- timestamp (timestamp), for showing the packing time of the block.
--- difficulty, only exist in the block chain network such as bit coin, for representing the difficulty of workload.
--- random number (Nonce), only exist in the block chain network such as bit coin.
The transaction data (transaction data) of All Activity in the block are included in block main body.
Block is deformed compared with traditional block, first all replaces with each single item transaction data in block main body accordingly
Trade fingerprinting, secondly the Mei Keer roots in block head are recalculated according to the content of amended block main body.
In the block chain network of the application subregion, account book that the subregions of different subregions common recognition node and synchronization node are stored
Record different.For example, A nodes are used as subregion common recognition node, the candidate block only packed to subregion one only in subregion one
By directly being added after checking, block is deformed by adding it after checking to the candidate block of other subregions packing.B node only exists
Synchronization node is used as in subregion two, the candidate block only packed to subregion two is beaten other subregions by directly being added after checking
The candidate block of bag deforms block by adding it after checking.C nodes are total in subregion one and subregion two as subregion simultaneously
Know node, the candidate block only packed to subregion one or subregion two after checking by directly adding, to the time of other subregions packing
Constituency block deforms block by adding it after checking.D nodes are used as synchronization node in subregion one and subregion three simultaneously, only right
The candidate block that subregion one or subregion three are packed after checking by directly adding, and the candidate block packed to other subregions is by testing
It is added after card and deforms block.E nodes are also used as synchronously both in subregion two as subregion common recognition node in subregion three
Node, the candidate block only packed to subregion two or subregion three after checking by directly adding, to the candidate of other subregions packing
Block deforms block by adding it after checking.
Figure 13 is referred to, this is that the block chain network of the application subregion realizes the embodiment of partitioned storage method, including such as
Lower step.
Step 1301：If candidate block just turns into legal new block, each overall situation is altogether by the checking for algorithm of knowing together
Know the block chain data structure that new block is added to itself storage by the common recognition of each subregion in node and same subregion node
End.
Step 1302：All or part of subregion common recognition in all or part of global common recognition node and same subregion
Node substitutes the transaction data in legal new block with trade fingerprinting value, obtains corresponding deformation block.
Step 1303：All or part of subregion common recognition in all or part of global common recognition node and same subregion
Node will deform block and is broadcast to each synchronization node (comprising the synchronization in the synchronization node and other subregions in same subregion again
Node) and other subregions in each subregion common recognition node.
Step 1304：Each subregion common recognition node in each synchronization node and other subregions only adds deformation block
It is added to the end of the block chain data structure of itself storage.
Step 1305：If candidate block is not verified, just do not turn into legal new block, each node stores at itself
The end of block chain data structure do not add the candidate block.
The step 1301 seamlessly can be engaged on after step 1106.
In existing block chain network, each node stores the trade fingerprinting of all historical trading datas.Once needs pair
Historical trading data is inquired about, and each node is with the trade fingerprinting and inquiry request of all historical trading datas of itself storage
In trade fingerprinting be compared, it is possible to independently draw Query Result.In the block chain network of the application subregion, each node is equal
With partition identification, each node also stores the trade fingerprinting of all historical trading datas.Partition identification refers to transaction data institute
In subregion.Once needing to inquire about historical trading data, the node for receiving inquiry request first passes through and compares the subregion of itself
Whether the partition identification for identifying and sending the node of inquiry request belongs to same subregion, to judge that the node for sending inquiry request is
It is no to have search access right.Only on the premise of having search access right, the node for receiving inquiry request just can be with all of itself storage
The trade fingerprinting of historical trading data is compared with the trade fingerprinting in inquiry request, it is possible to independently draws Query Result.
The history of subregion where each node to be confined to this subregion query scheme the node to the query context of historical trading data
In the range of transaction record, transregional inquiry is not allowed, so as to limit the exposure range of historical trading data, for data-privacy
Protection is extremely advantageous.
Figure 14 is referred to, this is the method that the block chain network of the application subregion realizes subregion inquiry, is comprised the following steps.
Step 1401：Each node in block chain network is respectively provided with partition identification.Partition identification have recorded the node institute
In subregion., also can be simultaneously in multiple subregions, therefore partition identification can be only because a node can be only in a subregion
Subregion where record one, can also record multiple place subregions simultaneously.If subregion where node changes, then corresponding
Partition identification also synchronized update.Now, global common recognition node is considered as in all subregions, and its partition identification have recorded all points
Area.
Step 1402：Each node in block chain network is stored with the trade fingerprinting of whole historical trading datas.Hand over
Easy fingerprint is stored in each block of the block chain data structure of each node storage, and/or is stored in block chain data structure
In each node its memory in addition.
The step is, for example, when the transaction data to be confirmed such as some being packaged as into candidate block in step 1105, by holding
The transaction data that the part or all of node of row packing is to be confirmed to each pen etc. calculates corresponding trade fingerprinting, and is packaged in
In candidate block.The candidate block once becomes legal new block by the checking for algorithm of knowing together, then new block and phase
All there is the trade fingerprinting of each transaction data in the deformation block answered.Either global common recognition node, subregion common recognition node
Or synchronization node, the trade fingerprinting of whole historical trading datas is all provided with the block chain data structure of itself storage.
Or the step is, for example, that legal new block is added to the end of block chain data structure in step 1301
When, the transaction of each transaction data in the new block is stored beyond block chain data structure by each node for performing storage
Fingerprint.Now, the subregion common recognition node of global common recognition node and place subregion be itself storage block chain data structure it
The trade fingerprinting of transaction data in this new block, the subregion common recognition node of other subregions and whole synchronous sections are provided with outside
Point is then to have during block is deformed corresponding to this new block (namely in the block chain data structure of itself storage)
The trade fingerprinting of transaction data in this new block.
The order of step 1401 to step 1402 can be exchanged arbitrarily, or be carried out simultaneously.
Step 1403：Arbitrary node (such as B node) in block chain network receives A nodes and (sends inquiry request
Node) inquiry request to historical trading data that sends, the A nodes for sending inquiry request are comprised at least in the inquiry request
Partition identification, the trade fingerprinting of historical trading data to be checked.
Step 1404：Receive point of the B node by the partition identification of itself and the A nodes for sending inquiry request of inquiry request
Whether area's mark is compared, judge the two nodes in same subregion.As long as there is any subregion in the partition identification of B node
With there is any subregion consistent in the partition identification of A nodes, the two nodes are considered as in same subregion.For example, point of A nodes
Area's mark shows A nodes while in subregion one and subregion two, and the partition identification of B node shows B node simultaneously in the He of subregion two
In subregion three, because two nodes of A, B have common subregion two therefore are considered as in same subregion.
Because overall situation common recognition node is considered as in all subregions, therefore the A nodes for sending inquiry request are inquired about with receiving
For any one in the B node of request for global common recognition node, the two nodes are inevitable in same subregion.
Step 1405：If receiving the B node of inquiry request and sending the A nodes of inquiry request not in same subregion, B
Node is returned without search access right to A nodes.
Step 1406：If receiving the B node of inquiry request and sending the A nodes of inquiry request in same subregion, B sections
Point is further by the trade fingerprinting in inquiry request compared with the trade fingerprinting of all historical trading datas itself stored.
Step 1407：If finding identical trade fingerprinting, show that the trade fingerprinting in inquiry request belongs to a certain pen and gone through
History transaction data, B node return to successful inquiring to A nodes.Now B node alternatively goes out this historical trading to A node display
The part or all of content of data.
Step 1408：If not finding identical trade fingerprinting, it is any to show that the trade fingerprinting in inquiry request is not belonging to
Historical trading data, B node return to inquiry failure to A nodes.
The preferred embodiment of the application is these are only, is not used to limit the application.Come for those skilled in the art
Say, the application there can be various modifications and variations.All any modifications within spirit herein and principle, made, it is equal
Replace, improve etc., it should be included within the protection domain of the application.
Claims (6)
1. a kind of block chain network of subregion, is made up of multiple nodes；It is characterized in that according to each node to different transaction data
It can be seen that authority, by part or all of node division in one or more subregions；It is complete for transaction data inside same subregion
It is it can be seen that invisible for transaction data between different subregions；The authority of common recognition process is participated in whole nodes according to each node again
Classification：The node that the common recognition process of all subregions can be participated in is global common recognition node, is only capable of the common recognition process of subregion where participating in
Node for subregion know together node, it is impossible to the node for participating in any common recognition process is synchronization node；Etc. transaction data to be confirmed
Only verified by the subregion common recognition node of global common recognition node and place subregion.
2. the block chain network of subregion according to claim 1, it is characterized in that, each node in same subregion can see
The transaction data of transaction in the subregion, each node in a subregion cannot see that completely for the transaction in other subregions
Transaction data and can only see trade fingerprinting.
3. the block chain network of subregion according to claim 1, it is characterized in that, transaction data to be confirmed is waited first by the overall situation
The subregion of common recognition node and place subregion common recognition node is packaged as candidate block, and candidate block is again by overall situation common recognition node and place
The subregion common recognition node of subregion is verified according to common recognition algorithm.
4. the method that a kind of block chain network of subregion realizes subregion common recognition, it is characterized in that, comprise the following steps：
(1) global common recognition node is determined in each node of block chain network；
(2) subregion is carried out according to the visible authority to different transaction data to the node in addition to global node of knowing together；Same point
It is fully visible for transaction data inside area, it is invisible for transaction data between different subregions；
(3) node in addition to global node of knowing together is divided into subregion common recognition node and synchronization node；
(4) one or more nodes by etc. transaction data to be confirmed be broadcast in each global common recognition node and same subregion
Subregion common recognition node；
(5) receive etc. all or part of global common recognition node of transaction data to be confirmed and the part in same subregion or
The transaction data to be confirmed such as some are packaged as a candidate block, packed candidate block by whole subregion common recognition nodes
The subregion common recognition node being broadcast to again in each global common recognition node and same subregion；
(6) all or part of subregion in all or part of global common recognition node and same subregion of candidate block is received
Common recognition node is verified using common recognition algorithm to candidate block.
5. the method that the block chain network of subregion according to claim 4 realizes subregion common recognition, it is characterized in that, the step
(1) arbitrarily adjust to the order of step (3), or carry out simultaneously.
6. the method that the block chain network of subregion according to claim 4 realizes subregion common recognition, it is characterized in that, the step
(1) step (1a) is changed to step (2a) to step (3)；
(1a) carries out subregion to each node in block chain network according to the visible authority to different transaction data；In same subregion
Portion is fully visible for transaction data, invisible for transaction data between different subregions；
Global common recognition node, subregion common recognition node and synchronization node are determined in each node of (2a) in block chain network.
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