CN106529951A - Node consensus verification method under league chain network through asynchronous mode - Google Patents

Node consensus verification method under league chain network through asynchronous mode Download PDF

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Publication number
CN106529951A
CN106529951A CN201611263907.2A CN201611263907A CN106529951A CN 106529951 A CN106529951 A CN 106529951A CN 201611263907 A CN201611263907 A CN 201611263907A CN 106529951 A CN106529951 A CN 106529951A
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node
transaction information
transaction
sequence
request sequence
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黄步添
孙羽羿
陈建海
刘振广
杨文龙
侯文龙
俞之贝
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Hangzhou Yunxiang Network Technology Co Ltd
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    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION 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
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION 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
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
    • G06Q20/3821—Electronic credentials
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION 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
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/40—Authorisation, e.g. identification of payer or payee, verification of customer or shop credentials; Review and approval of payers, e.g. check credit lines or negative lists
    • G06Q20/405—Establishing or using transaction specific rules
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION 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
    • G06Q40/00—Finance; Insurance; Tax strategies; Processing of corporate or income taxes
    • G06Q40/04—Trading; Exchange, e.g. stocks, commodities, derivatives or currency exchange

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Abstract

The invention discloses a node consensus verification method under a league chain network through an asynchronous mode. Each node takes a transaction request from the head of a buffer queue to act as a transaction sequence to be submitted and then encrypts the sequence by using threshold encryption; each node broadcasts the encrypted transaction sequence, ensures the integrity of the transmitted message by using an erasure code and ensures message consistency of different nodes by using a Merkle tree; and all the nodes vote the transaction sequences by using the binary Byzantine consensus agreement to reach a consensus, each node waits for local receiving all the voted transaction sequences and then decrypts the transaction sequences by using threshold decryption so as to finally obtain the decrypted transaction information to act as the transaction request written in blocks within the period. The method is completely decentralized, the system has no timeout mechanism and the broadcast message completely depends on the network bandwidth so that the method has higher network throughput when a large number of nodes exist in the network in comparison with the conventional synchronization Byzantine fault tolerance consensus method.

Description

The node common recognition verification method of asynchronous system is adopted under a kind of alliance's chain network
Technical field
The invention belongs to block chain technical field, and in particular to the node under a kind of alliance's chain network using asynchronous system is common Know verification method.
Background technology
Block chain technology has natural decentralization feature, be able to can be realized between each network node by algorithm of knowing together Intercommunication mutual trust.Alliance's chain in block chain is the block chain safeguarded by some node cooperations, and extraneous node is wanted to move State coalizes needs the license for obtaining alliance's chain interior joint.In the network with great deal of nodes, it is to distrust between node , network connection also becomes unpredictable, and common recognition agreement becomes ever more important.Protocol for error tolerance can provide powerful peace to network Quan Xing, it is ensured that the liveness of network.
Traditional synchronous Byzantine failure tolerance agreement depends on timeout mechanism to ensure the liveness of network, as real network is deposited In fluctuation, the network bandwidth also in change, in transmission, may lose by message, need in a locally located clock, during more than certain Between then make leader node resend message.And the time parameter difficulty of setting is larger, parameter is less, and message ceaselessly may be weighed Recurrence is sent；Parameter is larger, and message on the way may have been lost, and child node can not know that message has been lost in time, most Termination fruit still will retransmit message.
Traditional synchronous Byzantine failure tolerance agreement is not complete decentralization, there is a leader node, altogether in system Know message to be received and sent by leader node.A leader node, certain a moment are selected in order in each time period system The network bandwidth becomes big, and other child nodes cannot receive the message of leader node issue, it is believed that the message of leader node is lost, meeting Next leader node is selected, during the possible control bandwidth of such attacker makes system be constantly in election leadership's node Endless loop is absorbed in, system will be unable to regular communication messages.
The content of the invention
In view of it is above-mentioned, the invention provides the node common recognition verification method of asynchronous system under a kind of alliance's chain network, is adopted, Without leader node, it is complete decentralization, when the network bandwidth changes, node receives message and is unaffected；System There is no timeout mechanism, ignore real-time clock, the processing procedure of broadcast is completely dependent on the network bandwidth, larger in the network bandwidth When, system can obtain good handling capacity.
The common recognition verification method of asynchronous system is adopted under a kind of alliance's chain network, is comprised the steps：
(1) build the system operation framework for realizing common recognition checking under alliance's chain network using asynchronous system；
(2) when Transaction Information comes interim, the node in network is slow as being input into and being stored in using the Transaction Information for receiving Rush in area；
(3) node takes out first part of Transaction Information as the transaction request sequence for oneself proposing from buffer queue beginning, and The sequence is encrypted；
(4) node is broadcasted to the transaction request sequence after encryption, the correcting and eleting codes used in broadcasting process come guarantee pass The integrality of defeated message, guarantees the message uniformity of different nodes using Merkle trees；
(5) node is voted to the transaction request sequence for receiving using binary system Byzantium common recognition agreement, reaches altogether Sequence is decrypted after knowledge, finally obtains the Transaction Information of write block in this cycle.
The concrete methods of realizing of the step (1) is：First, a certain amount of node is arranged in alliance's chain network, arbitrarily There is point-to-point passage trusty between two nodes, node by set up the form of public key and key and trust other Node is interacted；Secondly, using the Transaction Information for receiving as input, target is reached common understanding on Transaction Information to the node And submit transaction request sequence to；Further, it is ensured that at most have f error node in alliance's chain network, and meet 3f+1≤N, N is Node total number.
The concrete methods of realizing of the step (2) is：When Transaction Information comes interim, node makees the Transaction Information for receiving To be input into and storing in the buffer；The buffering area of node is unbounded, if the Transaction Information that size is B is stored in node, should Transaction Information is divided into N parts, and per part of size is B/N, and N is node total number；The Transaction Information content that each node is deposited is identical But order is different, if a correct node can export a Transaction Information, each correct node can export a friendship Easy information.
The concrete methods of realizing of the step (3) is：Firstly, since the Transaction Information of storage is suitable in each node buffering area Sequence is different, and each node extracts first part of Transaction Information as transaction request sequence to be broadcast, institute from buffer queue beginning It is different with the Transaction Information of each node broadcasts；Secondly, node carries out adding to transaction request sequence using Threshold cryptosystem method Close, the Threshold cryptosystem method is that, using global public key encryption message, each node is decrypted acquisition using private key to ciphertext Decryption fragment, a number of decryption fragment piece together the origination message that can just obtain, and such nodes must be together Work could be decrypted, as long as the correct node calculating more than error node quantity decrypts ciphertext, just can recover in plain text.
The concrete methods of realizing of the step (4) is：First, the transaction request sequence for needing broadcast is divided into multiple by node Data block simultaneously adds certain check block, accordingly even when there is part Transaction Information to lose in broadcasting process, is still able to ensure The probability that each node receives more original Transaction Information as far as possible is as big as possible；Secondly, node is to locally stored Transaction Information The form of Merkle trees is set up by Hash procedure, the Merkle trees are for checking the consistent of transaction message between node Property, it is only necessary to by the root for judging Merkle trees；Node adds the root in the transaction request sequence for needing broadcast, if The Transaction Information root of sender's node is inconsistent with the Transaction Information root of recipient's node, then recipient's node abandons the friendship Easily request sequence, broadcasts out the receipt oneself having been received by if consistent recipient's node, so that it is guaranteed that the transaction letter of sender The Transaction Information of breath and recipient is identical.
The concrete methods of realizing of the step (5) is：Node adopts binary system Byzantium after receiving transaction request sequence Common recognition agreement is voted, and determines whether the transaction request sequence can add submission team based on the principle that the minority is subordinate to the majority Row, each node wait the All Activity request sequence for oneself receiving just can submit to after voting through, and then pass through thresholding Decryption method finally gives the Transaction Information that block is write in this cycle after being decrypted to these transaction request sequences.
The inventive method can realize the common recognition checking of each node, alliance's link network under alliance's chain scene using asynchronous system , be present timeout mechanism in the complete decentralization of network system, without regulating time parameter, it is not necessary to consider network fluctuation, can grab Network availability bandwidth is taken, broadcast is completely dependent on the network bandwidth；When bandwidth is relatively large, the present invention ensure that higher net Network handling capacity, system have security, compare with conventional synchronous Byzantine failure tolerance common recognition method and have in a network great deal of nodes When with higher network throughput.
Description of the drawings
Fig. 1 is the schematic flow sheet of extraction transaction sequence and ciphering sequence in the present invention.
Fig. 2 ensures the complete conforming schematic flow sheet of Transaction Information for correcting and eleting codes and Merkle trees are adopted in the present invention.
Fig. 3 is the schematic flow sheet of ballot common recognition and decrypted sequences in the present invention.
Fig. 4 is the overall procedure schematic diagram of common recognition method of the present invention.
Specific embodiment
In order to more specifically describe the present invention, below in conjunction with the accompanying drawings and specific embodiment is to technical scheme It is described in detail.
The present invention adopts the node common recognition verification method of asynchronous system under alliance's chain scene, comprises the steps：
(1) build the system operation framework for realizing common recognition checking under alliance's chain scene using asynchronous system.
There is a certain amount of node in alliance's chain, between each two node, there is point-to-point passage trusty, node can Interacted with other nodes with trust.
If N number of point, P are arranged altogether in alliance's chain0To Pn-1, this N number of node is using the Transaction Information for receiving as input, mesh Mark is submission requests transaction sequence of reaching common understanding on Transaction Information；F error node is up in alliance's chain, and meets 3f+1 ≤ N, node can be interacted with other nodes of trust by setting up public key and key.
(2) when Transaction Information comes interim, node is stored in buffering area as input and by them using the transaction for receiving.Section The buffering area of point is unbounded, and the Transaction Information that size is B is stored in node, and these Transaction Informations are divided into N parts, and per part has friendship Easily information B/N is individual, and the information content that each node is deposited is identical but order is different；One correct node can export a transaction Information, then each correct node can export a Transaction Information.
(3) node starts the transaction sequence to be committed for taking out that first part of transaction request is proposed as oneself from buffer queue, Usage threshold encryption is encrypted to the sequence.
This step process is as shown in figure 1, as the information order deposited in each node buffering area is different, each node takes First part of transaction request of corresponding buffer queue beginning is broadcasted, so the information of each node broadcasts is different, institute The encryption method being related to is Threshold cryptosystem method TPKE, and the method for the Threshold cryptosystem is to use global public key encryption message, each Node is decrypted acquisition decryption fragment using private key, and a number of decryption fragment pieces together and just can obtain original disappearing Breath, such network node must work together and could decrypt, once more than error node, the correct node of is calculated and is decrypted Go out ciphertext, just can recover in plain text.
(4) the candidate's transaction sequence broadcast encrypted is guaranteed to transmit the integrality of message using correcting and eleting codes, is used by node Merkle trees are guaranteeing the message uniformity of different nodes.
This step process as shown in Fig. 2 need broadcast transaction sequence in add certain check code, make original friendship Easily sequence increases, accordingly even when there is part Transaction Information to lose in broadcasting process, is still able to ensure that each node is received The probability of many original Transaction Informations is as big as possible as far as possible.Merkle trees are only needed for checking the uniformity of two node messages The root judged by Merkle trees, if the root of the Transaction Information of sender is inconsistent with the Transaction Information root of recipient, This Transaction Information is then abandoned, the receipt for receiving of oneself is unanimously then broadcast out and then is carried out next step, it is ensured that the friendship for sending Easily information and the Transaction Information for receiving are same items.
(5) node knows together agreement come the request sequence ballot to candidate using binary system Byzantium, uses after reaching common understanding Thresholding decryption is decrypted to transaction sequence message, obtains the transaction request of write block in final this cycle.
This step process obeys many based on minority as shown in figure 3, node receives the transaction sequence of broadcast and voted Several principles determines whether the transaction sequence can add submission sequence.Each node waits all transaction sequences voted through The transaction sequence that will be submitted to is constituted, obtains in final this cycle, writing the transaction of block after thresholding decryption method is decrypted Information.
It is below a specific case study on implementation, the alliance's chain network in the case study on implementation is disposed with N number of node, P0Extremely Pn-1, at most there is f error node, and meet 3f+1≤N, this N number of node is stored in the Transaction Information of the B sizes for receiving slow Rush in area, transaction is divided into N parts by each node, per part has B/N.Overall procedure is as shown in figure 4, in a cycle In, the first step, all nodes select the Transaction Information of first part of B/N size in oneself caching sequence, will with Threshold cryptosystem method Which is encrypted the candidate transaction sequence { v for obtaining encryptingj}.The candidate for oneself encrypting is concluded the business by second step, each node Sequence { vjA certain amount of correcting and eleting codes are added to constitute new sequence { sj, it is broadcasted away, PK is public key, SKiFor node PiPrivate Key, each node pass through public key PK and private key SKiWhether the broadcast sequence received with the inspection of Merkle trees is that certain node is sent out Go out, it is ensured that the message uniformity of recipient and sender.3rd step, each node know together agreement come to candidate using binary system Request sequence ballot, ballot according to majority rule to each { sjVoted, broadcast after finishing ticket and come from Oneself vote information, determines transaction sequence { s' to be committedj, then decrypted to transaction sequence { s' to be committed using thresholdingjEnter Row decryption obtains the Transaction Information { y of write block in final this cyclej}.Each node waits that oneself to receive all ballots logical Submit to by the information crossed, it is not necessary to wait other nodes.Then each node each starts the second round of oneself.
The above-mentioned description to embodiment is to be understood that for ease of those skilled in the art and apply the present invention. Person skilled in the art obviously easily can make various modifications to above-described embodiment, and described herein general Principle is applied in other embodiment without through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, ability Field technique personnel announcement of the invention, the improvement made for the present invention and modification all should be in protection scope of the present invention Within.

Claims (6)

1. the node common recognition verification method of asynchronous system is adopted under a kind of alliance's chain network, is comprised the steps：
(1) build the system operation framework for realizing common recognition checking under alliance's chain network using asynchronous system；
(2) when Transaction Information comes interim, the node in network is using the Transaction Information for receiving as being input into and be stored in buffering area In；
(3) node takes out first part of Transaction Information as the transaction request sequence for oneself proposing from buffer queue beginning, and to this Sequence is encrypted；
(4) node is broadcasted to the transaction request sequence after encryption, and the correcting and eleting codes used in broadcasting process disappear guaranteeing transmission The integrality of breath, guarantees the message uniformity of different nodes using Merkle trees；
(5) node is voted to the transaction request sequence for receiving using binary system Byzantium common recognition agreement, after reaching common understanding Sequence is decrypted, the Transaction Information of write block in this cycle is finally obtained.
2. node according to claim 1 is known together verification method, it is characterised in that：The side of implementing of the step (1) Method is：First, a certain amount of node is arranged in alliance's chain network, exist trusty point-to-point logical between any two node Road, node are interacted by other nodes of the form and trust of setting up public key and key；Secondly, the node handle is received Transaction Information as input, target is to reach common understanding on Transaction Information and submit transaction request sequence to；Further, it is ensured that alliance At most there be f error node in chain network, and meet 3f+1≤N, N is node total number.
3. node according to claim 1 is known together verification method, it is characterised in that：The side of implementing of the step (2) Method is：When Transaction Information comes interim, node is using the Transaction Information for receiving as being input into and store in the buffer；Node it is slow It is unbounded to rush area, if the Transaction Information that size is B is stored in node, the Transaction Information is divided into N parts, and per part of size is B/N, N are node total number；The Transaction Information content that each node is deposited is identical but sequentially different, if a correct node can be exported One Transaction Information, then each correct node can export a Transaction Information.
4. node according to claim 1 is known together verification method, it is characterised in that：The side of implementing of the step (3) Method is：Firstly, since the Transaction Information order of storage is different in each node buffering area, each node is carried from buffer queue beginning First part of Transaction Information is taken out as transaction request sequence to be broadcast, so the Transaction Information of each node broadcasts is different； Secondly, node is encrypted to transaction request sequence using Threshold cryptosystem method, and the Threshold cryptosystem method is using global public Key encrypts message, and each node is decrypted acquisition decryption fragment using private key to ciphertext, and a number of decryption fragment is pieced together Origination message can be just obtained together, such nodes must work together and could decrypt, as long as being more than error node number The correct node of amount is calculated and decrypts ciphertext, just can be recovered in plain text.
5. node according to claim 1 is known together verification method, it is characterised in that：The side of implementing of the step (4) Method is：First, the transaction request sequence for needing broadcast is divided into multiple data blocks and adds certain check block by node, so i.e. Make in broadcasting process, have part Transaction Information to lose, be still able to ensure that each node receives more original Transaction Information as far as possible Probability it is as big as possible；Secondly, node sets up the form of Merkle trees to locally stored Transaction Information by Hash procedure, The Merkle trees are for checking the uniformity of transaction message between node, it is only necessary to by the root for judging Merkle trees；Section Point adds the root in the transaction request sequence for needing broadcast, if the Transaction Information root of sender's node is saved with recipient The Transaction Information root of point is inconsistent, then recipient's node abandons the transaction request sequence, broadcasts if consistent recipient's node Go out the receipt oneself having been received by, so that it is guaranteed that the Transaction Information of the Transaction Information of sender and recipient is identical.
6. node according to claim 1 is known together verification method, it is characterised in that：The side of implementing of the step (5) Method is：Node is voted using binary system Byzantium common recognition agreement after receiving transaction request sequence, obeys many based on minority Several principles determines whether the transaction request sequence can add submission queue, and each node waits all friendships for oneself receiving Easily request sequence just can be submitted to after voting through, and then these transaction request sequences is decrypted by thresholding decryption method The Transaction Information of write block in this cycle is finally given afterwards.
CN201611263907.2A 2016-12-30 2016-12-30 Node consensus verification method under league chain network through asynchronous mode Pending CN106529951A (en)

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