CN107103473A - A kind of intelligent contract implementation method based on block chain - Google Patents

A kind of intelligent contract implementation method based on block chain Download PDF

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Publication number
CN107103473A
CN107103473A CN201710289161.0A CN201710289161A CN107103473A CN 107103473 A CN107103473 A CN 107103473A CN 201710289161 A CN201710289161 A CN 201710289161A CN 107103473 A CN107103473 A CN 107103473A
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CN
China
Prior art keywords
contract
affairs
user
block chain
intelligent contract
Prior art date
Application number
CN201710289161.0A
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Chinese (zh)
Inventor
张小松
夏琦
范文慧
牛伟纳
陈瑞东
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电子科技大学
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Application filed by 电子科技大学 filed Critical 电子科技大学
Priority to CN201710289161.0A priority Critical patent/CN107103473A/en
Publication of CN107103473A publication Critical patent/CN107103473A/en

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06QDATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00Payment architectures, schemes or protocols
    • G06Q20/38Payment protocols; Details thereof
    • G06Q20/382Payment protocols; Details thereof insuring higher security of transaction
    • G06Q20/3825Use of electronic signatures
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06QDATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00Payment architectures, schemes or protocols
    • G06Q20/38Payment protocols; Details thereof
    • G06Q20/40Authorisation, 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
    • G06Q20/405Establishing or using transaction specific rules

Abstract

The invention discloses a kind of implementation method of the intelligent contract based on block chain, belong to intelligent contract field, it is main to include intelligent contract formulation, intelligent contract deposit block chain and intelligent contract three parts of execution automatically.The formulation of intelligent contract is participated in jointly by multi-party users, participant is digitally signed to it in rear incoming block chain network, when data sharing occurs between participant, intelligent contract will inspect periodically state of automata, once some affairs meets intelligent contract trigger condition, verify that node can carry out authentication to the affairs, will be by system successful execution by the affairs of checking.

Description

A kind of intelligent contract implementation method based on block chain

Technical field

The present invention relates to block chain technical field, and in particular to a kind of intelligent contract implementation method based on block chain.

Background technology

Contract, refers to two aspects or several respects when handling something, in order to determine respective rights and duties and being total to for concluding With the provision observed.

Traditional contract is write on paper, can just be come into force after signing and sealing, and the implementation procedure of contract is assisted by many controls View is constituted, and control protocol includes the preservation of record and the examination & verification of record and the negotiations, the examination & verification and negotiation of record such as form bill It is generally necessary to which third-party participate in, and the execution efficiency of contract can only be ensured by law, military force.

With the development of information technology, specified, controlled by the technologies such as computer, internet and cipher theory reduction contract And the cost performed is increasingly becoming a kind of new development trend.1997, Nick Szabo introduced the concept of " intelligent contract ":Intelligence Can contract agreement terms are embedded into soft and hardware, the execution of contract is promoted by agreement and user interface, it be us Safety, the key of digitlization relation are formed in internet.That is, in computer circle, contract is the form by code Realize.Effectively whether digitized contract, exist and, easily denied, may be tampered and by the risk of assault, Therefore confidence level is not high all the time for digitized contract.

The content of the invention

For above-mentioned prior art, present invention aims at provide a kind of intelligent contract implementation method based on block chain.

To reach above-mentioned purpose, the technical solution adopted by the present invention is as follows:

A kind of intelligent contract based on block chain performs method, comprises the following steps:

Step 1, the user for having data sharing demand for two and two or more, itself need to formulate according to each user A contract, contract is used for the rights and duties of clear and definite each side, and obtains electronic contract by programming language, by participation contract Each user formulated is digitally signed to electronic contract, the effective contract of acquisition, the validity signed to ensure contract, Realize that intelligent contract is formulated;

Step 2, effective contract are spread by way of P2P in block chain, and effective contract is participated in block chain and is formulated Each node all receive a effectively contract and be stored in corresponding block, except including ontology information in corresponding block Outside, also recorded comprising effective contract and record corresponding timestamp with effective contract, realize intelligent contract in block chain network Middle deposit;

Step 3, set effective contract to inspect periodically state of automata, travel through one by one included in effective contract state machine, Affairs and trigger condition, when affairs meet trigger condition, using verifying that node carries out signature verification to affairs first, sign herein Validity for ensuring affairs, affairs are performed after node is verified by signature verification, realize that intelligent contract is performed automatically.

In the above method, described step 3 comprises the following steps:

Step 3.1, data sharing request is initiated by user after produce corresponding affairs, and the operation note of user right In the block answered;

Step 3.2, the execution state for checking effective contract state machine, travel through effective contract and find the corresponding triggering of the affairs Condition;

Step 3.3, when the affairs meet trigger condition, by verify node to the affairs carry out signature authentication;

Step 3.3.1, after affairs are by signature verification, required for initiating corresponding requests to database and return to user Data, the i.e. affairs are by system successful execution and notify user;

If step 3.3.2, the affairs can not be by verifying the checking of node, Client-initiated data sharing request is lost Lose, i.e., the affairs perform failure, system returns to corresponding state and notifies user;

Step 3.4, in the process of implementation, is operated by whether effective contract occurs running counter to contract to affairs real-time oversight, if Contract operation is run counter in appearance, then stops the execution of affairs and the state is returned into user.

In the above method, described step 1 is additionally included in before formulation contract, has the user of data sharing demand in block Account Registration is carried out in chain, a pair of public keys and private key that block chain is distributed are received by corresponding account after registration.

In the above method, described step 1, wherein each user for participating in contract formulation is the private by respective account Key is signed to electronic contract, to ensure the validity of contract.

In the above method, described step 2, wherein when effective contract is diffused into block chain by P2P modes, by area Checking node in block chain verifies have after more than half checking node is by verifying and reaching common understanding to effective contract Effect contract is stored in corresponding block.

A kind of intelligent contract system based on block chain, including

Intelligent contract designated module, receives the electronic contract converted by user's contract;

Intelligent contract is stored in module, receives effective contract that intelligent contract designated module is transmitted;

The intelligent automatic performing module of contract, traversal is checked is stored in effective contract that module is stored in block by intelligent contract Comprising state machine, affairs and trigger condition and affairs are selectively performed by inspection result.

In such scheme, the described automatic performing module of intelligent contract includes intelligent contract and performs state machine, for storing The database of data, user initiate data sharing request and checking node;Described intelligent contract performs state machine, receive by with The affairs of data sharing request generation are initiated at family and the effective contract of traversal finds out the corresponding trigger condition of affairs;

Described checking node, the trigger condition that the intelligent contract execution state machine of reception is fed back meets situation and by meeting Situation is selectively verified to transaction signature;

Described database, reception verifies the proofing state of node institute signature verification affairs and selectively right by proofing state Initiate user's returned data of data sharing request.

Compared with prior art, beneficial effects of the present invention:

Intelligent contract system based on block chain to we bring decentralization, can not distort, it is highly reliable The system of property;

Can not tamper so that user is without worrying that treaty content can be modified;

High reliability so that the contract when condition is satisfied will not be performed user without worry system;

Decentralization brings the whole network to back up to user, and complete record can support post-audit completely;

Just rule and program, user need not go to believe the other side for signing contract, it is only necessary to believe block catenary system Remaining thing can be completed just can be with.

Brief description of the drawings

Fig. 1 is general frame schematic diagram of the invention;

Fig. 2 is schematic diagram of the embodiment of the present invention.

Embodiment

All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive Feature and/or step beyond, can combine in any way.

The present invention will be further described below in conjunction with the accompanying drawings:

A kind of intelligent contract implementation method based on block chain, this method includes intelligent contract and formulates step, intelligent contract Deposit block chain network step and intelligent contract perform step automatically.

The intelligent contract, which formulates step, to be included:

Two and two or more have the user of data sharing demand, and a contract is formulated according to their needs, each side is specified Rights and duties, and by programming language by its electronization, contract formulates each side, and guarantee is digitally signed to it that its is effective Property.

The intelligent contract deposit block chain network step includes:

Contract is spread by way of p2p in block link network, is participated in each node of contract formulation and can all be received portion And be stored in corresponding block.Block in addition to comprising its original information, should also comprising intelligent contract record and its Corresponding timestamp.

The intelligent contract performs step automatically to be included:

Intelligent contract inspects periodically state of automata, and state machine, affairs and the trigger condition included in contract is traveled through one by one. Once affairs meet trigger condition, checking node can carry out signature verification to ensure the validity of affairs to affairs first, when testing Card node will be performed automatically by affairs after checking.

In the present invention, the user for having data sharing demand is the login account of block chain, and block chain can give correspondence account Family returns to a pair of public keys and private key.

In the present invention, contract maker is that the contract after electronization is signed by respective private key, with true Protect the validity of contract.

In the present invention, when intelligent contract is diffused into block chain network by p2p modes, the checking node in block chain It can be verified, intelligent contract can just be stored in correspondence after more than half checking node is reached common understanding by checking Block in.

In the present invention, intelligent contract performing module include intelligent contract perform state machine, data storage database (i.e. Block) and Client-initiated event request (i.e. affairs) and checking four modules of node.Specific execution step is as follows:

(1) user A initiates data sharing request to system, then produces 1 corresponding affairs, and user A operation is remembered Record is in corresponding block;

(2) the execution state of the intelligent contract state machine of systems inspection, traversal contract finds the corresponding trigger condition of the affairs;

(3) when the affairs meet trigger condition, system can be by verifying that node carries out signature authentication to the affairs, it is ensured that thing The validity of business;

(4) after affairs are by checking, system will initiate corresponding requests to database and return to the number required for user A According to that is, the affairs by system successful execution and can notify user A;

(5) if the affairs can not be by verifying the checking of node, the request failure that user A is initiated, i.e. affairs execution Failure, system can return to corresponding state and notify user A;

(6) affairs will also be supervised by intelligent contract always in the process of implementation, once implementation procedure occurs running counter to contract Operation, affairs will stop perform and the state is returned into user A.

Embodiment 1

When having data sharing demand referring to Fig. 2, between party A-subscriber and party B-subscriber, party A-subscriber and party B-subscriber formulate a jointly first Intelligent contract, and by becoming its electronization, intelligent contract is stored to A and B by both sides after being signed with the private key of oneself In corresponding block, and corresponding timestamp is recorded in respective block.When party A-subscriber's a data shared to party B-subscriber, this is 1 Secondary " data sharing behavior ", when the affairs meet intelligent contract trigger condition, is verified as in the incoming block chain of an affairs Node to the affairs by being verified, after being verified, and the affairs will be performed automatically, otherwise, and the affairs can be due to discontented Sufficient verification condition will not be performed.For example:The intelligent contract wherein one that party A-subscriber and party B-subscriber formulate is:Party A-subscriber is common to party B-subscriber The data enjoyed, party B-subscriber only has the authority operated in opening, editor and specified time range.When the contract is stored in both sides couple After the block answered, party B-subscriber initiates party A-subscriber data sharing request, after intelligent contract trigger condition is met, and checking node is to it Verified, once be verified, party B-subscriber can smooth operation party A-subscriber share to its data, but this operation will always by Intelligent contract is supervised.Party B-subscriber can only share to his data to party A-subscriber and be opened, edited and within a specified time be grasped Make.Once beyond correspondence time range, party B-subscriber will be retracted to all operating rights of the data.If party B-subscriber enters to the data Operation outside row contract, such as:Replicate, then party B-subscriber will also lose operating right to the data because violating intelligent contract.B User's operation behavior all to the data will be all recorded among corresponding block.

The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any Belong to those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in, all should It is included within the scope of the present invention.

Claims (7)

1. a kind of intelligent contract based on block chain performs method, it is characterised in that comprise the following steps:
Step 1, the user for having data sharing demand for two and two or more, need to formulate a according to each user itself Contract, and electronic contract is obtained by programming language, each user formulated by participation contract enters line number to electronic contract Word is signed, and obtains effective contract;
Step 2, effective contract are spread by way of P2P in block chain, and each of effective contract formulation is participated in block chain Individual node all receives a effectively contract and is stored in corresponding block, in corresponding block except comprising ontology information it Outside, also recorded comprising effective contract and record corresponding timestamp with effective contract;
Step 3, the effective contract of setting inspect periodically state of automata, and the state machine included in effective contract, affairs are traveled through one by one And trigger condition, when affairs meet trigger condition, using node is verified first to affairs progress signature verification, when checking node leads to Cross after signature verification and perform affairs.
2. a kind of intelligent contract based on block chain as claimed in claim 1 performs method, it is characterised in that described step 3, comprise the following steps:
Step 3.1, data sharing request is initiated by user after produce corresponding affairs, and the operation note of user corresponding In block;
Step 3.2, the execution state for checking effective contract state machine, travel through effective contract and find the corresponding triggering bar of the affairs Part;
Step 3.3, when the affairs meet trigger condition, by verify node to the affairs carry out signature authentication;
Step 3.3.1, after affairs are by signature verification, initiate corresponding requests to database and return to the number required for user According to that is, the affairs are by system successful execution and notify user;
If step 3.3.2, the affairs can not be by verifying the checking of node, Client-initiated data sharing request failure, i.e., The affairs perform failure, and system returns to corresponding state and notifies user;
Step 3.4, in the process of implementation, is operated by whether effective contract occurs running counter to contract to affairs real-time oversight, if occurring Contract operation is run counter to, then stops the execution of affairs and the state is returned into user.
3. a kind of intelligent contract based on block chain as claimed in claim 1 performs method, it is characterised in that described step 1, it is additionally included in before formulation contract, the user for having data sharing demand carries out Account Registration in block chain, by correspondence after registration Account receives a pair of the public keys and private key that block chain is distributed.
4. a kind of intelligent contract based on block chain as claimed in claim 2 performs method, it is characterised in that described step 1, wherein each user for participating in contract formulation is that electronic contract is signed by the private key of respective account.
5. a kind of intelligent contract based on block chain as claimed in claim 1 performs method, it is characterised in that described step 2, wherein when effective contract is diffused into block chain by P2P modes, being entered by the checking node in block chain to effective contract Row checking, effectively contract is stored in corresponding block after more than half checking node is by verifying and reaching common understanding.
6. a kind of intelligent contract system based on block chain, it is characterised in that including
Intelligent contract designated module, receives the electronic contract converted by user's contract;
Intelligent contract is stored in module, receives effective contract that intelligent contract designated module is transmitted;
The intelligent automatic performing module of contract, traversal checks that the effective contract being stored in by intelligent contract deposit module in block is wrapped The state machine, affairs and the trigger condition that contain and affairs are selectively performed by inspection result.
7. a kind of intelligent contract system based on block chain as claimed in claim 6, it is characterised in that described intelligent contract Automatic performing module includes intelligent contract and performs state machine, the database for data storage, user's initiation data sharing request With checking node;Described intelligent contract performs state machine, receive by user initiate data sharing request generation affairs and time Have effect contract all through the ages and find out the corresponding trigger condition of affairs;
Described checking node, the trigger condition that the intelligent contract execution state machine of reception is fed back meets situation and by meeting situation Selectively transaction signature is verified;
Described database, receives the proofing state of checking node institute signature verification affairs and by proofing state selectively to initiating User's returned data of data sharing request.
CN201710289161.0A 2017-04-27 2017-04-27 A kind of intelligent contract implementation method based on block chain CN107103473A (en)

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CN107943950A (en) * 2017-11-24 2018-04-20 中钞信用卡产业发展有限公司杭州区块链技术研究院 The method and system that data intelligence contract generates in a kind of block chain
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CN108257000A (en) * 2018-02-26 2018-07-06 北京阿尔山金融科技有限公司 Intelligent contract realizes system, method and electronic equipment
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CN109194710A (en) * 2018-07-19 2019-01-11 广州泽祺信息科技有限公司 A kind of specific people's behavior supervisory systems and method based on block chain and intelligent contract
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CN107767478A (en) * 2017-09-06 2018-03-06 阿里巴巴集团控股有限公司 A kind of method and device for preserving logging
TWI636411B (en) * 2017-09-13 2018-09-21 現代財富控股有限公司 System to provide non-repudiation for non-blockchain node and method thereof
CN107682331B (en) * 2017-09-28 2020-05-12 复旦大学 Block chain-based Internet of things identity authentication method
CN107682331A (en) * 2017-09-28 2018-02-09 复旦大学 Internet of Things identity identifying method based on block chain
CN107943950B (en) * 2017-11-24 2020-07-10 中钞信用卡产业发展有限公司杭州区块链技术研究院 Method and system for generating intelligent contracts of data in block chain
CN107943950A (en) * 2017-11-24 2018-04-20 中钞信用卡产业发展有限公司杭州区块链技术研究院 The method and system that data intelligence contract generates in a kind of block chain
CN107886329A (en) * 2017-11-28 2018-04-06 无锡井通网络科技有限公司 The clocked flip call method of system contract based on block chain technology
CN109872157A (en) * 2017-12-01 2019-06-11 北京欧链科技有限公司 The method and device of intelligent contract is executed in block chain
CN108197913B (en) * 2017-12-18 2021-01-05 深圳前海微众银行股份有限公司 Payment method, system and computer readable storage medium based on block chain
CN108197913A (en) * 2017-12-18 2018-06-22 深圳前海微众银行股份有限公司 Method of payment, system and computer readable storage medium based on block chain
CN108122159A (en) * 2017-12-22 2018-06-05 中链科技有限公司 A kind of factoring information processing method and system based on block chain
CN108182580B (en) * 2017-12-29 2021-01-01 北京欧链科技有限公司 Block chain-based contract triggering method and device
WO2019127531A1 (en) * 2017-12-29 2019-07-04 深圳前海达闼云端智能科技有限公司 Block chain-based data processing method and apparatus, storage medium and electronic device
CN108182580A (en) * 2017-12-29 2018-06-19 北京欧链科技有限公司 The triggering method and device of contract based on block chain
CN108256864A (en) * 2018-02-13 2018-07-06 中链科技有限公司 Between a kind of block chain across the foundation of chain alliance and communication means, system
CN108256864B (en) * 2018-02-13 2019-06-07 中链科技有限公司 Foundation across chain alliance and communication means, system between a kind of block chain
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