CN106960165A - It is a kind of that the method that electronic contract is conutersigned in many ways is realized based on the intelligent contract of block chain - Google Patents
It is a kind of that the method that electronic contract is conutersigned in many ways is realized based on the intelligent contract of block chain Download PDFInfo
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- CN106960165A CN106960165A CN201710145170.2A CN201710145170A CN106960165A CN 106960165 A CN106960165 A CN 106960165A CN 201710145170 A CN201710145170 A CN 201710145170A CN 106960165 A CN106960165 A CN 106960165A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
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- 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
- G06Q10/00—Administration; Management
- G06Q10/10—Office automation; Time management
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2151—Time stamp
Abstract
The present invention is intended to provide a kind of realize the method that electronic contract is conutersigned in many ways based on the intelligent contract of block chain, step is as follows：Write the intelligent contract program including contract dataset；Intelligent contract program is deployed in block platform chain each node；Initialize contract dataset；Each contract party confirms contract dataset, and certification is contracted；All contract party's signings are finished, the national time service hub-interface capping trusted timestamp of intelligent contract routine call.The present invention on all block chain nodes by performing intelligent contract program, electronic contract countersign and storage electronic contract are realized in intelligent contract, it so can effectively solve the problem of existing electronic contract signature technology is easily tampered poor with security when that can sign a contract, also ensure that still final electronic contract can not be tampered, and the record of signing contract and time can not also be tampered every time.
Description
Technical field
It is more particularly to a kind of to be realized based on the intelligent contract of block chain the present invention relates to Internet technology and electronic contract field
The method that electronic contract is conutersigned in many ways.
Background technology
As economic continues to develop, the signature quantity of contract is sharply increased in business activity.Conventional transaction activity is general
The signature of papery contract can be carried out, but there are many problems in the signature of papery contract：First, it is distance problem.Because apart from or
Person's other reasonses, if each side signed a contract can not complete signature in same place, generally require and have been signed by one party
Bi Hou, the opposing party that takes is signed again, if being related to multi-party signature, such efficiency will be very low；Second, if big
When amount signs certain same type contract, traditional artificial signature or the way affixed one's seal also waste time and energy inefficiency.
It is now technically general using the way for signing electronic contract in order to solve the above problems.Existing electronic contract
Signing technology, mainly there is offline signature and on-line signing two ways.For offline signature, contracting parties will be capped the electricity of party B
Sub- stamped signature re-sends to next contract party, and this process is cumbersome whard to control, and electronic contract is in the process of network transmission
In be easily tampered.For in on-line signing mode, being usually to use number to the contracting parties of electronic contract by a signing platform
Verified according to certificate (CA), signing completes the national time service center capping trusted timestamp of backward professional time-stamping service mechanism to prove
The legal of this part of electronic contract, reliability and authenticity.The electronic contract signature mode of prior art, it is either offline or online
Signature, electronic contract, which all exists, easily artificially to be distorted, the problem of reliability and poor security.
With the big heat of block chain technology in 2016, some scientific workers propose electronic contract countersign finish after,
Complete electronic contract deposit block chain, to ensure that it can not tamper.This technology can ensure that final electronic contract not by
Distort, but there are problems that：The countersign service of electronic contract is mainly realized and carried out in the system of signing platform
Circulation, signing plateform system is generally based on the service of Centroid, easily under attack and safety and availability issue occur,
Once signing plateform system goes wrong, it will be unable to normally provide subscribed services.
The content of the invention
To overcome the defect of above-mentioned prior art, realized the embodiments of the invention provide one kind based on the intelligent contract of block chain
The method that electronic contract is conutersigned in many ways, by performing intelligent contract program on all block chain nodes, in intelligent contract
Electronic contract countersign and storage electronic contract are realized, existing electronic contract signature technology so can be effectively solved when that can sign a contract
Easily be tampered with security it is poor the problem of, also ensure that not still final electronic contract can not be tampered, and sign every time
About the record of contract and time can not also be tampered.
The side that electronic contract is conutersigned in many ways realized based on the intelligent contract of block chain there is provided a kind of in order to achieve the above object
Method, comprises the following steps：
A intelligent contract program) is write, intelligent contract program includes contract dataset；
B) intelligent contract program is deployed in block platform chain each node；
C contract dataset) is initialized；
D) each contract party confirms contract dataset, and certification is contracted；
E) all contract party's signings are finished, and intelligent contract program carries out time mark.
It is preferred that, time labeling method is the national time service hub-interface capping trusted timestamp of intelligent contract routine call.
It is preferred that, intelligent contract program is provided with initialization interface, step C) realized by initialization interface.
It is preferred that, intelligent contract program is provided with query interface, step D) in each contract party pass through query interface confirm close
Same data.
It is preferred that, intelligent contract program is provided with signing interface, step D) in each contract party by contract interface realize recognize
Signed certificate is about.
It is preferred that, contract party logs in signing interface, if contract dataset is designated as contracting successfully, does not operate；Otherwise, produce
Electronic signature, change contract dataset is designated as contracting successfully, and the addition digital signature content in contract dataset.
It is preferred that, digital signature produces step and is：Digital digest is produced with hash algorithm to contract dataset, then uses contract party
The private key encryption digital digest of personal certificate obtain digital signature.
It is preferred that, contract dataset includes contract ID, Contract NO, treaty content, contract status, Contract Signing and finishes the time
And each contract party's data.
It is preferred that, contract party's data include contract party ID, the affiliated side of signing, contract party's title, signing state and signing
Time.
Present invention advantage compared with prior art is：
By performing intelligent contract program on all block chain nodes, realize that electronic contract is conutersigned in intelligent contract
With storage electronic contract, it so can effectively solve existing electronic contract signature technology and be easily tampered and security when that can sign a contract
Poor the problem of, also ensure that not still final electronic contract can not be tampered, and every time the record of signing contract and when
Between can not also be tampered；Intelligent contract program is provided with initial interface, query interface and signing interface, facilitates contract party to sign
About, effect is improved, it is ensured that accuracy.
Brief description of the drawings
Fig. 1 is method of the present invention schematic flow sheet.
Embodiment
In the present description, the orientation or position relationship of the instruction such as term " on ", " under ", " preceding " and " rear " are based on attached
Orientation or position relationship shown in figure, are for only for ease of the description present invention rather than require that the present invention must be with specific orientation
Construction and operation, therefore be not considered as limiting the invention.
The embodiment to the present invention is described further below in conjunction with the accompanying drawings.
It is of the present invention each in order to which the data for ensureing the confidentiality of communication port and sending are not trapped or distorted
Contract party and server all first install the digital certificate that trust authority is issued, and the connection of contract party and server uses SSL connections.
Present invention proposition is a kind of to realize the method that electronic contract is conutersigned in many ways based on the intelligent contract of block chain, and step is as follows：
The intelligent contract program including contract dataset is write, intelligent contract program is provided with initialization interface, query interface and signing
Interface；Intelligent contract program is deployed in block platform chain each node；Initialization interface initializes contract dataset；Each signing
Side is contracted by query interface acknowledgment of your inquiry contract dataset, and by interface authentication of contracting, and all contract party's signings are finished, intelligence
Contract program carries out time mark, when time labeling method is that the national time service hub-interface capping of intelligent contract routine call is credible
Between stab.
In the above method disclosed by the invention, the countersign service of electronic contract is realized by the intelligent contract of block chain, intelligence
Energy contract program is one section of computer programming language program in machine code, is performed on each node of block chain.The present invention by
The initialization interface of intelligent contract is performed on block chain, query interface realizes that it is whole that electronic contract is conutersigned in many ways with signing interface
Individual flow, after contract dataset initialization, a contract party confirms after contract and certification signing that block platform chain is by intelligent contract journey
Sequence is broadcast in each block chain node, and after next contract party is contracted by query interface and signing interface authentication, block chain is put down
Platform by intelligent contract program broadcast into each block chain node, so on, to the last contract party is completed after countersign,
Intelligent contract program is capped timestamp.Related data can be all stored in block chain node during whole signing, Mei Gequ
Block chain node all includes a timestamp connected with previous block chain node so that data can not be distorted, once note
Record is got off, and the data in a block chain node will be irreversible, and each block chain node preserves complete distributed account
Family copy, with reference to common recognition mechanism, the technology such as AES, which realizes data, to distort, and can not forge, high availability, can chase after
The feature such as trace back, so that the trust problem between the mankind is solved indirectly by computer, so that it is not only final electricity that can ensure that
Sub- contract can not be tampered, and the record of signing contract and time can not also be tampered every time.
Reference picture 1, present pre-ferred embodiments are as follows：
Step S01, each side of signing on line or under line ditch have friendly relations treaty content, then by contract initiator according to most
The contract template determined eventually and each side of signing write corresponding intelligent contract program, and intelligent contract program is deployed to area
In each node of block chain.The initialization interface of intelligent contract program, initialization will be called when deployment intelligence contract program
Treaty content and the information of contract party.
Step S02, each contract party calls the query interface of intelligent contract program, confirms that treaty content is errorless, calls intelligence
The signing interface of energy contract realizes that digital signature identification is contracted.
Step S03, all contract parties are digitally signed after conscientiously signing, in the national time service of intelligent contract routine call
Heart interface is capped trusted timestamp to electronic contract content and the digital signature of each side contract party.
Pass through above step so that electronic contract is contracted and preserved and performed all on block chain, it is ensured that signing contract record
It can not be forged and distort with final treaty content.Finally final electronic contract content and the digital signature of each contract party are capped
Trusted timestamp, can solidify the integrality and existence time point of final electronic contract content, prevent electronic contract content and label
Administration is forged and distorted the time.
In order to be better understood from the technical method that the present invention is implemented, the data that intelligent contract in block chain is explained below are determined
All nodes in justice and interface, block chain have same intelligent contract data to define and interface.
Intelligent contract data definition：
Contract dataset, including contract ID, Contract NO, treaty content, contract status, Contract Signing finish the time, each label
About square data, it is specific as follows：
Contract party's data, including contract party ID, side's (such as Party A, Party B) contract party's title belonging to signing, state of contracting,
It is the signing time, specific as follows：
Explain：Contract status in contract dataset includes two states, is 0 respectively in signing, 1 finishes for signing, just
Beginning state is initially empty for 0, contractFinishTime.Signing state in contract party's data has two states, is 0 respectively
To be unsigned, 1 is contracts successfully, and original state is 0.SignTime original states are sky.
Intelligent contract-defined interface sample code：
Note it being a intelligent contract of contract correspondence one here.
(1) contract interface is initialized
Init(Contract contract)
Parameter declaration：Contract is Contract structure objects, and preservation is contract and each corresponding signing of contract
The relevant information of side.
Interface logic explanation：Contract dataset is initialized, related data is deposited into block chain.
(2) contract query interface
Query()
Interface logic explanation：The corresponding contract of the intelligent contract of this part and contract party's information are inquired about, return deposits into block chain
The relevant information of contract, including treaty content, each side's signing state etc..
(3) signing contract interface
Sign(Customer customer)
Parameter declaration：Customer is Customer structure objects, the relevant information for being logged on contract party of preservation.
Interface logic explanation：According to contract party's information is logged in, electronic signature, the corresponding contract party's state of change contract are produced
To contract successfully.If signing state is not operated to contract successfully.After contracting successfully, to Contract structures
In digitalDignature addition digital signature content.The step of digital signature is produced be：Use is produced to treaty content
Hash algorithm produces digital digest, then obtains digital signature with the private key encryption digital digest of the personal certificate of contract party.If
For last contract party, then the electronic signature treaty content plus each contract party obtains an electronic data fingerprint, then
Timestamp is capped to national time service center, to prove the validity of signing time.The time point is finally deposited into Contract knots
The contractFinishTime of structure body, and contractStatus is changed to 1, i.e. signing finishes state.
The announcement and teaching of book according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and changed.Therefore, the invention is not limited in embodiment disclosed and described above, to the present invention's
Some modifications and changes should also be as falling into the scope of the claims of the present invention.Although in addition, being used in this specification
Some specific terms, but these terms are merely for convenience of description, do not constitute any limitation to the present invention.
Claims (9)
1. a kind of realize the method that electronic contract is conutersigned in many ways based on the intelligent contract of block chain, it is characterised in that including following step
Suddenly：
A intelligent contract program) is write, the intelligent contract program includes contract dataset；
B) intelligent contract program is deployed in block platform chain each node；
C contract dataset) is initialized；
D) each contract party confirms contract dataset, and certification is contracted；
E) all contract party's signings are finished, and the intelligent contract program carries out time mark.
2. as claimed in claim 1 realize the method that electronic contract is conutersigned in many ways based on the intelligent contract of block chain, its feature exists
In：The time labeling method is the national time service hub-interface capping trusted timestamp of intelligent contract routine call.
3. as claimed in claim 1 realize the method that electronic contract is conutersigned in many ways based on the intelligent contract of block chain, its feature exists
In：The intelligent contract program is provided with initialization interface, the step C) realized by the initialization interface.
4. as claimed in claim 1 realize the method that electronic contract is conutersigned in many ways based on the intelligent contract of block chain, its feature exists
In：The intelligent contract program is provided with query interface, the step D) in each contract party pass through the query interface confirm close
Same data.
5. as claimed in claim 1 realize the method that electronic contract is conutersigned in many ways based on the intelligent contract of block chain, its feature exists
In：The intelligent contract program is provided with signing interface, the step D) in each contract party by it is described signing interface realize recognize
Signed certificate is about.
6. as claimed in claim 5 realize the method that electronic contract is conutersigned in many ways based on the intelligent contract of block chain, its feature exists
In：Contract party logs in the signing interface, if the contract dataset is designated as contracting successfully, does not operate；Otherwise, electronics is produced
Signature, changes the contract dataset and is designated as contracting successfully, and the addition digital signature content in the contract dataset.
7. as claimed in claim 5 realize the method that electronic contract is conutersigned in many ways based on the intelligent contract of block chain, its feature exists
In the digital signature produces step and is：To the contract dataset with hash algorithm produce digital digest, then with contract party
Digital digest described in the private key encryption of people's certificate obtains digital signature.
8. the method that electronic contract is conutersigned in many ways is realized based on the intelligent contract of block chain as described in claim any one of 1-7,
It is characterized in that：The contract dataset includes contract ID, Contract NO, treaty content, contract status, Contract Signing and finishes the time
And each contract party's data.
9. as claimed in claim 8 realize the method that electronic contract is conutersigned in many ways based on the intelligent contract of block chain, its feature exists
In：Contract party's data include contract party ID, the affiliated side of signing, contract party's title, signing state and signing time.
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| CN201710145170.2A CN106960165B (en) | 2017-03-13 | 2017-03-13 | Method for realizing multi-party electronic contract countersigning based on block chain intelligent contract |
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| CN201710145170.2A CN106960165B (en) | 2017-03-13 | 2017-03-13 | Method for realizing multi-party electronic contract countersigning based on block chain intelligent contract |
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