CN114386147A - Copyright protection method and system of BIM (building information modeling) model based on block chain and intelligent contract - Google Patents

Copyright protection method and system of BIM (building information modeling) model based on block chain and intelligent contract Download PDF

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CN114386147A
CN114386147A CN202210005643.XA CN202210005643A CN114386147A CN 114386147 A CN114386147 A CN 114386147A CN 202210005643 A CN202210005643 A CN 202210005643A CN 114386147 A CN114386147 A CN 114386147A
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bim
intelligent contract
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authenticator
information
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戚雄昌
宫培松
郭鹏
任伟
项悦欣
方新雷
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Wuhan Municipal Construction Group Co Ltd
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Wuhan Municipal Construction Group Co Ltd
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    • G06—COMPUTING; CALCULATING OR COUNTING
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    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/602—Providing cryptographic facilities or services
    • 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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Abstract

The invention discloses a copyright protection method of a BIM model based on a block chain and an intelligent contract, which comprises the following steps: the BIM copyright authentication party uploads the related information to the intelligent contract, initializes the intelligent contract and deploys the initialized intelligent contract to the alliance chain; the BIM creator requests a BIM copyright authenticator to carry out BIM copyright authentication and simultaneously pays a corresponding deposit to the intelligent contract; BIM copyright authenticator uses upload party public key PK obtained from intelligent contractAHash value R of signatures uploaded by BIM authorsAVerifying, and if the verification result is correct, initiating BIM copyright authentication; otherwise, the intelligent contract sends the deposit to the BIM copyright authenticator for operationTo compensate.

Description

Copyright protection method and system of BIM (building information modeling) model based on block chain and intelligent contract
Technical Field
The invention relates to the field of information security of a BIM (building information modeling) model, in particular to a copyright protection method and a copyright protection system of the BIM model based on a block chain and an intelligent contract.
Background
At present, the intelligent construction of the industrial internet enters a 3.0 stage, wherein a 1.0 stage is a stand-alone BIM version, a 2.0 stage is a BIM server C/S framework, and a 3.0 stage is an industrial internet platform framework. 3.0 bringing forward the multi-area cooperative use (Beijing, Shanghai, Wuhan, etc.), the multi-user unit simultaneous use (design, construction, supervision, owner, etc.), and the multi-terminal simultaneous use (PC, notebook, smart phone, tablet computer, industrial robot, etc.). The BIM model is not commonly shared at present, and the main reason is that the model is worried about being utilized by others after sharing, so that the intellectual property is potentially lost, and a good safe transaction environment does not exist. Currently, there is no information security management measure for effective privacy protection of the BIM 3.0 platform BIM model, and secure transaction cannot be performed. Due to the particularity of the copyright of the BIM, the conventional technology related to copyright protection cannot be applied to the copyright protection of the BIM.
Disclosure of Invention
The invention mainly aims to provide a safe and efficient BIM model copyright protection method and system based on a block chain and an intelligent contract.
The technical scheme adopted by the invention is as follows:
the copyright protection method of the BIM model based on the block chain and the intelligent contract comprises the following steps:
BIM copyright authenticator information MBAnd the public key PK of the authenticatorBUploading the deposit amount N to an intelligent contract, initializing the intelligent contract, and deploying the initialized intelligent contract to a alliance chain;
the BIM creator requests the BIM copyright authenticator to carry out BIM copyright authentication and sends BIM copyright information BIM to the intelligent contractIPAnd uploading side information MAAnd an uploading party public key PKAPrivate information by BIM creatorsKey SKASigned Hash value RAWherein R isA＝Sig(Hash(MIP||MA||T),SKA) Paying a corresponding deposit to the intelligent contract;
BIM copyright authenticator uses upload party public key PK obtained from intelligent contractAHash value R of signatures uploaded by BIM authorsAVerifying, and if the verification result is correct, initiating BIM copyright authentication; otherwise, the intelligent contract sends the deposit to the BIM copyright authenticator for compensation.
In connection with the above technical scheme, the specific process of the BIM copyright authenticator for performing the BIM copyright authentication is as follows:
the intelligent contract inquires the alliance chain and confirms the BIM copyright information M uploaded by the BIM creatorIPWhether there is a record on the federation chain;
if the BIM copyright information MIPIf the record is recorded on the alliance chain and the uploading party is the BIM creator requesting the BIM copyright authentication, the intelligent contract returns the deposit to the BIM creator, and the process is terminated;
if the BIM copyright information MIPIf the record is recorded on the alliance chain but the uploading party is not the BIM creator requesting the BIM copyright authentication, the intelligent contract sends the deposit to the BIM copyright authentication party, and the process is terminated;
if the BIM copyright information MIPAnd if no record exists in the alliance chain, the BIM copyright authentication direction sends an instruction to the intelligent contract to confirm that the BIM copyright authentication can be carried out, the intelligent contract initiates voting to require a core node of the alliance chain part to check a BIM copyright authentication request sent by a BIM creator.
According to the technical scheme, the BIM copyright authentication results are divided into the following parts:
if the vote is not objected to and exceeds alpha x V, the authentication is effective, wherein alpha is a preset first passing coefficient;
if the vote is objection vote and the objection vote does not exceed beta V and the vote exceeds theta V, the authentication is effective, wherein the beta is a preset objection coefficient, and the theta is a preset second pass coefficient; otherwise, the authentication is considered invalid.
According to the technical scheme, if the authentication is effective, the private key SK is used by the core node of the alliance chain which throws the agreement ticketFHash value R for signatureASigning to obtain RAF，RAF＝Sig(RA,SKF)；
If the authentication is invalid, the intelligent contract refunds the deposit to the BIM creator requesting the BIM copyright authentication, and the process is terminated.
In connection with the above technical solution, the method further comprises the steps of: authentication party private key SK for BIM copyright authentication partyBTo RAFSigning to obtain RAFB＝Sig(RAF,SKB) The result R after signatureAFBAnd packaging the result of the BIM copyright authentication into a block chain.
The above technical solution is connected, where alpha is 0.8, beta is 0.1, and theta is 0.9.
In connection with the above technical solution, the method further comprises the steps of:
if the purchaser wants to purchase a BIM copyright, the purchaser firstly inquires the BIM copyright on the alliance chain to obtain the BIM copyright information MIPAnd uploading side information MAAnd an uploading party public key PKAAnd authenticator information MBAnd the public key PK of the authenticatorBAnd a public key PK of a core node of the federation chain participating in verificationF；
The purchaser uses the upload public key PKAPublic key PK of core node of alliance chain participating in verificationFAnd authenticator public key PKBSequentially verifying, and comparing the obtained information with BIM copyright information M stored in the block chainIPComparing to verify the BIM copyright information MIP。
The invention also provides a copyright protection system of the BIM model based on the block chain and the intelligent contract, which comprises the following steps:
an intelligent contract initialization module for the BIM copyright authenticator to authenticate the authenticator information MBAnd the public key PK of the authenticatorBUploading the deposit amount N to an intelligent contract, initializing the intelligent contract, and deploying the initialized intelligent contract to a alliance chain;
BIM copyright upload module, useRequesting BIM copyright authenticator to carry out BIM copyright authentication at BIM creator, and sending BIM copyright information BIM to intelligent contractIPAnd uploading side information MAAnd an uploading party public key PKAPrivate key SK for BIM creatorASigned Hash value RAWherein R isA＝Sig(Hash(MIP||MA||T),SKA) Paying a corresponding deposit to the intelligent contract;
BIM copyright authentication module for BIM copyright authenticator according to upload public key PK obtained from intelligent contractAHash value R of signatures uploaded by BIM authorsAVerifying, and if the verification result is correct, initiating BIM copyright authentication; otherwise, the intelligent contract sends the deposit to the BIM copyright authenticator for compensation.
In connection with the above technical solution, the system further includes a digital IP copyright verification module, which is used for querying the BIM copyright through the alliance chain to obtain the BIM copyright information M when the purchaser wants to purchase a certain BIM copyrightIPAnd uploading side information MAAnd an uploader public key PKAAnd authenticator information MBAnd the public key PK of the authenticatorBAnd a public key PK of a core node of the federation chain participating in verificationF(ii) a The purchaser uses the upload public key PKAPublic key PK of core node of alliance chain participating in verificationFAnd authenticator public key PKBSequentially verifying, and comparing the obtained information with BIM copyright information M stored in the block chainIPComparing to verify the BIM copyright information MIP。
The invention also provides a computer storage medium, in which a computer program executable by a processor is stored, the computer program executes the technical scheme, and the block chain and intelligent contract-based BIM model copyright protection method is provided.
The invention has the following beneficial effects: the invention can protect the copyright of the BIM participating in sharing, namely, an interface is established between the BIM system and the blockchain alliance chain system, so that the shared model in the BIM system can be protected by the copyright related data added in the blockchain system, the worry and the current situation that developers do not want to share, use and submit the BIM are solved, and the use, popularization and development of BIM development are promoted.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a flow chart of a copyright protection method based on a BIM model of a block chain and an intelligent contract according to an embodiment of the present invention;
FIG. 2 is a diagram of a BIM model copyright protection method based on block chains and intelligent contracts according to another embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a copyright protection system based on a BIM model of a block chain and an intelligent contract according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a copyright protection system based on a block chain and a BIM model of an intelligent contract according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention mainly utilizes the intelligent contract technology of the block chain, is an accompanying system independent of the BIM system, and has the function of protecting the copyright of the BIM. The two systems may have an interface, i.e., the BIM information of the BIM system and the BIM information of the intelligent contract system may correspond. The intelligent contract system may be considered a subset of a blockchain system, i.e., a set of codes on a chain.
As shown in fig. 1, the method for protecting copyright of a BIM model based on a block chain and an intelligent contract according to an embodiment of the present invention includes the following steps:
s1, BIM copyright authenticator information MBAnd the public key PK of the authenticatorBUploading the deposit amount N to an intelligent contract, initializing the intelligent contract, and deploying the initialized intelligent contract to a alliance chain;
s2, the BIM creator requests the BIM copyright authenticator to carry out BIM copyright authentication and sends the intelligent contractSending about BIM copyright information BIMIPAnd uploading side information MAAnd an uploading party public key PKAPrivate key SK for BIM creatorASigned Hash value RAWherein R isA＝Sig(Hash(MIP||MA||T),SKA) Paying a corresponding deposit to the intelligent contract;
s3, BIM copyright authenticator uses the public key PK of the obtained uploaderAHash value R of signatures uploaded by BIM authorsACarrying out verification; the BIM copyright authenticator can specifically acquire the public key PK of the uploader from the public directory of the blockchain systemA。
S4, judging whether the verification result is correct or not;
s5, if the verification result is correct, initiating BIM copyright authentication;
and S6, if the verification result is incorrect, the intelligent contract sends the deposit to the BIM copyright authenticator for compensation.
In the embodiment of the invention, the parameters in the intelligent contract mainly comprise BIM copyright information MIPUpload time stamp T and upload party information MAAnd an uploading party public key PKAAnd authenticator information MBAnd the public key PK of the authenticatorBThe amount of the deposit N and the required number of votes V of core point nodes of the alliance chain; wherein BIM copyright information MIPIncluding BIM creator ID, BIM creation time, BIM type, BIM brief introduction, BIM description information, BIM file length, and BIM copyright attribution.
The specific process of the BIM copyright authenticator performing the BIM copyright authentication in step S3 is as follows:
the intelligent contract inquires the alliance chain and confirms the BIM copyright information M uploaded by the BIM creatorIPWhether there is a record on the federation chain;
if the BIM copyright information MIPIf the record is recorded on the alliance chain and the uploading party is the BIM creator requesting the BIM copyright authentication, the intelligent contract returns the deposit to the BIM creator, and the process is terminated;
if the BIM copyright information MIPIf there is a record in the alliance chain but the uploading party is not the BIM creator who requests the BIM copyright authentication at this time, thenThe intelligent contract sends the deposit to the BIM copyright authenticator, and the process is terminated;
if the BIM copyright information MIPAnd if no record exists in the alliance chain, the BIM copyright authentication direction sends an instruction to the intelligent contract to confirm that the BIM copyright authentication can be carried out, the intelligent contract initiates voting to require a core node of the alliance chain part to check a BIM copyright authentication request sent by a BIM creator.
Specifically, the results of BIM copyright authentication are classified into the following:
if the vote is not objected to and exceeds alpha x V, the authentication is effective, wherein alpha is a preset first passing coefficient;
if the vote is objection vote and the objection vote does not exceed beta V and the vote exceeds theta V, the authentication is effective, wherein the beta is a preset objection coefficient, and the theta is a preset second pass coefficient; otherwise, the authentication is considered invalid.
If the authentication is effective, the private key SK is used by the core node of the alliance chain which throws the agreement ticketFHash value R for signatureASigning to obtain RAF，RAF＝Sig(RA,SKF)；
If the authentication is invalid, the intelligent contract refunds the deposit to the BIM creator requesting the BIM copyright authentication, and the process is terminated.
Further, the method comprises the steps of: authentication party private key SK for BIM copyright authentication partyBTo RAFSigning to obtain RAFB＝Sig(RAF,SKB) The result R after signatureAFBAnd packaging the result of the BIM copyright authentication into a block chain.
In the preferred embodiment of the present invention, alpha is 0.8, beta is 0.1, and theta is 0.9.
If the purchaser wants to purchase a BIM copyright, the purchaser firstly inquires the BIM copyright on the alliance chain to obtain the BIM copyright information MIPAnd uploading side information MAAnd an uploading party public key PKAAnd authenticator information MBAnd the public key PK of the authenticatorBAnd a public key PK of a core node of the federation chain participating in verificationF；
Purchase use uploadSquare public key PKAPublic key PK of core node of alliance chain participating in verificationFAnd authenticator public key PKBSequentially verifying, and comparing the obtained information with BIM copyright information M stored in the block chainIPComparing to verify the BIM copyright information MIP。
Another embodiment of the present invention provides a copyright protection method for a BIM model based on a block chain and an intelligent contract, as shown in fig. 2, which mainly includes the following steps:
and I, initializing the intelligent contract.
The parameters in the intelligent contract in this embodiment include:
1) BIM copyright information MIPThe method comprises the following steps: BIM creator ID, BIM creation time, BIM type, BIM brief introduction, BIM description information, BIM file length, BIM copyright attribution and the like;
2) currently uploading a timestamp T;
3) upload side information MA；
4) Uploading square public key PKA；
5) Authenticator information MB；
6) Authenticator public key PKB；
7) The deposit amount N;
8) the required number of core point node votes V for the federation chain.
Initializing the intelligent contract by a BIM copyright authenticator Bob, and acquiring authenticator information MBAnd the public key PK of the authenticatorBAnd uploading the deposit amount N to the intelligent contract, and deploying the intelligent contract to the accessed alliance chain after uploading is completed.
And II, uploading BIM copyright.
If Alice wants to authenticate the copyright of own BIM (building information model) by Bob on a alliance chain, the following information needs to be uploaded to an intelligent contract:
1) BIM copyright information BIMIPAnd 2) uploading party information MAAnd 3) uploading party public key PKAAnd 4) by Alice private key SKASigned Hash value RA＝Sig(Hash(MIP||MA||T),SKA)。
Then at AAfter the license pays a deposit with the amount of N to the smart contract, Bob can use the public key PK of AliceAVerifying the Hash value of the signature uploaded by Alice, and if the result is correct, initiating BIM copyright authentication; otherwise, the intelligent contract sends Alice's deposit to Bob as compensation.
And III, BIM copyright authentication.
The authentication adopts a voting mechanism, and is a consensus mechanism, namely, the problem that whether the copyright uploaded by Alice is valid is solved, and the copyright claimed by Alice needs to be checked and confirmed by a plurality of parties of a block chain. Most of the parties here may be federation chain master nodes, typically copyright managers of federation chain participating entities, and clients with federation chain software installed may operate this voting process.
Firstly, the intelligent contract queries the alliance chain and confirms that the information uploaded by Alice is not recorded on the alliance chain.
If the BIM copyright information MIPIf the record is recorded on the alliance chain and the uploading party is Alice, the intelligent contract returns the deposit to the Alice, and the process is terminated;
if the BIM copyright information MIPIf the record is recorded on the alliance chain and the uploading party is not Alice, the intelligent contract sends the deposit to Bob, and the process is terminated;
if the BIM copyright information MIPAnd if no record exists in the alliance chain, Bob sends an instruction to the intelligent contract to confirm that the BIM copyright authentication can be carried out, the intelligent contract initiates voting to require the core node of the alliance chain part to check the BIM copyright authentication request sent by Alice.
The copyright authentication results are divided into the following types:
if there is no objection to the vote and the vote exceeds alpha V, e.g., take alpha 0.8, then the authentication is valid;
if there is an objection vote and the objection vote does not exceed beta V, e.g., take beta 0.1, and vote exceeds theta V, e.g., take theta 0.9, then authentication is validated;
otherwise, the authentication is considered invalid.
If the authentication is valid, the alliance chain which throws the agreement ticket uses the private key SKFTo RACarry out signature RAF＝Sig(RA,SKF)；
If the authentication is invalid, the intelligent contract returns the deposit to Alice, and the process is terminated.
Finally, Bob pairs RAFCarry out signature RAFB＝Sig(RAF,SKB) And packaging the obtained result into a block chain as a result of copyright authentication.
And IV, verifying the digital IP copyright.
If Cindy wants to purchase a BIM copyright, the copyright of the BIM copyright needs to be inquired from the alliance chain, and the uploaded BIM copyright information M is inquiredIPAnd uploading side information MAAnd an uploader public key PKAAnd authenticator information M thereofBAnd the public key PK of the authenticatorBAnd a public key PK of a core node of the federation chain participating in verificationF。
To RAFBUsing an uploading public key PKAPublic key PK of core node of alliance chain participating in verificationFAnd authenticator public key PKBSequentially verifying, and comparing the obtained information with BIM copyright information M stored in the block chainIPComparing to verify the BIM copyright information MIP。
As shown in fig. 3, the copyright protection system based on the block chain and the BIM model of the intelligent contract according to the embodiment of the present invention includes:
an intelligent contract initialization module for the BIM copyright authenticator to authenticate the authenticator information MBAnd the public key PK of the authenticatorBUploading the deposit amount N to an intelligent contract, initializing the intelligent contract, and deploying the initialized intelligent contract to a alliance chain;
a BIM copyright uploading module for the BIM creator to request the BIM copyright authenticator to carry out the BIM copyright authentication and send the BIM copyright information BIM to the intelligent contractIPAnd uploading side information MAAnd an uploading party public key PKAPrivate key SK for BIM creatorASigned Hash value RAWherein R isA＝Sig(Hash(MIP||MA||T),SKA) Paying a corresponding deposit to the intelligent contract;
BIM copyright authenticationA module for BIM copyright authenticator according to upload party public key PK obtained from intelligent contractAHash value R of signatures uploaded by BIM authorsAVerifying, and if the verification result is correct, initiating BIM copyright authentication; otherwise, the intelligent contract sends the deposit to the BIM copyright authenticator for compensation.
As shown in fig. 4, the system further includes a digital IP copyright verification module, configured to query the BIM copyright through the alliance chain to obtain the BIM copyright information M when a purchaser wants to purchase a certain BIM copyrightIPAnd uploading side information MAAnd an uploader public key PKAAnd authenticator information MBAnd the public key PK of the authenticatorBAnd a public key PK of a core node of the federation chain participating in verificationF(ii) a The purchaser uses the upload public key PKAPublic key PK of core node of alliance chain participating in verificationFAnd authenticator public key PKBSequentially verifying, and comparing the obtained information with BIM copyright information M stored in the block chainIPComparing to verify the BIM copyright information MIP。
The present invention also provides a computer-readable storage medium, such as a flash memory, a hard disk, a multimedia card, a card-type memory (e.g., SD or DX memory, etc.), a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, an optical disk, a server, an App application mall, etc., on which a computer program is stored, which when executed by a processor implements corresponding functions. The computer-readable storage medium of this embodiment is used to implement the copyright protection method of the BIM model based on the blockchain and the intelligent contract of the above-described embodiment.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims (10)

1. A copyright protection method of a BIM model based on a block chain and an intelligent contract is characterized by comprising the following steps:
BIM copyright authenticator information MBAnd the public key PK of the authenticatorBUploading the deposit amount N to an intelligent contract, initializing the intelligent contract, and deploying the initialized intelligent contract to a alliance chain;
the BIM creator requests the BIM copyright authenticator to carry out BIM copyright authentication and sends BIM copyright information BIM to the intelligent contractIPAnd uploading side information MAAnd an uploading party public key PKAPrivate key SK for BIM creatorASigned Hash value RAWherein R isA＝Sig(Hash(MIP||MA||T),SKA) Paying a corresponding deposit to the intelligent contract;
BIM copyright authenticator uses acquired public key PK of uploaderAHash value R of signatures uploaded by BIM authorsAVerifying, and if the verification result is correct, initiating BIM copyright authentication; otherwise, the intelligent contract sends the deposit to the BIM copyright authenticator for compensation.
2. The BIM model copyright protection method based on the block chain and the intelligent contract as claimed in claim 1, wherein the specific process of the BIM copyright authenticator for carrying out the BIM copyright authentication is as follows:
the intelligent contract inquires the alliance chain and confirms the BIM copyright information M uploaded by the BIM creatorIPWhether there is a record on the federation chain;
if the BIM copyright information MIPIf the record is recorded on the alliance chain and the uploading party is the BIM creator requesting the BIM copyright authentication, the intelligent contract returns the deposit to the BIM creator, and the process is terminated;
if the BIM copyright information MIPIf the record is recorded on the alliance chain but the uploading party is not the BIM creator requesting the BIM copyright authentication, the intelligent contract sends the deposit to the BIM copyright authentication party, and the process is terminated;
if the BIM copyright information MIPNo record is recorded in the alliance chain, the BIM copyright authentication direction sends an instruction to the intelligent contract to confirm that the BIM copyright authentication can be carried out, the intelligent contract initiates voting,requiring the core node of the alliance chain part to check the BIM copyright authentication request sent by the BIM creator.
3. The BIM model copyright protection method based on the block chain and the intelligent contract as claimed in claim 2, wherein the result of BIM copyright authentication is divided into the following:
if the vote is not objected to and exceeds alpha x V, the authentication is effective, wherein alpha is a preset first passing coefficient;
if the vote is objection vote and the objection vote does not exceed beta V and the vote exceeds theta V, the authentication is effective, wherein the beta is a preset objection coefficient, and the theta is a preset second pass coefficient; otherwise, the authentication is considered invalid.
4. The BIM model copyright protection method based on block chains and intelligent contracts according to claim 3, wherein if the authentication is valid, the core node of the alliance chain which throws the agreement ticket uses the private key SKFHash value R for signatureASigning to obtain RAF，RAF＝Sig(RA,SKF)；
If the authentication is invalid, the intelligent contract refunds the deposit to the BIM creator requesting the BIM copyright authentication, and the process is terminated.
5. The BIM model copyright protection method based on block chains and intelligent contracts according to claim 4, characterized by further comprising the steps of: authentication party private key SK for BIM copyright authentication partyBTo RAFSigning to obtain RAFB＝Sig(RAF,SKB) The result R after signatureAFBAnd packaging the result of the BIM copyright authentication into a block chain.
6. The BIM model copyright protection method based on block chain and intelligent contract as claimed in claim 3, wherein alpha is 0.8, beta is 0.1, and theta is 0.9.
7. The BIM model copyright protection method based on block chains and intelligent contracts according to claim 1, characterized by further comprising the steps of:
if the purchaser wants to purchase a BIM copyright, the purchaser firstly inquires the BIM copyright on the alliance chain to obtain the BIM copyright information MIPAnd uploading side information MAAnd an uploading party public key PKAAnd authenticator information MBAnd the public key PK of the authenticatorBAnd a public key PK of a core node of the federation chain participating in verificationF；
The purchaser uses the upload public key PKAPublic key PK of core node of alliance chain participating in verificationFAnd authenticator public key PKBSequentially verifying, and comparing the obtained information with BIM copyright information M stored in the block chainIPComparing to verify the BIM copyright information MIP。
8. A copyright protection system of a BIM model based on a block chain and an intelligent contract is characterized by comprising:
an intelligent contract initialization module for the BIM copyright authenticator to authenticate the authenticator information MBAnd the public key PK of the authenticatorBUploading the deposit amount N to an intelligent contract, initializing the intelligent contract, and deploying the initialized intelligent contract to a alliance chain;
a BIM copyright uploading module for the BIM creator to request the BIM copyright authenticator to carry out the BIM copyright authentication and send the BIM copyright information BIM to the intelligent contractIPAnd uploading side information MAAnd an uploading party public key PKAPrivate key SK for BIM creatorASigned Hash value RAWherein R isA＝Sig(Hash(MIP||MA||T),SKA) Paying a corresponding deposit to the intelligent contract;
BIM copyright authentication module for BIM copyright authenticator according to upload public key PK obtained from intelligent contractAHash value R of signatures uploaded by BIM authorsAVerifying, and if the verification result is correct, initiating BIM copyright authentication; otherwise, the intelligent contract sends the deposit to the BIM editionThe right authenticator acts as a compensation.
9. The BIM model copyright protection system based on block chain and intelligent contract of claim 8, further comprising a digital IP copyright verification module for querying BIM copyright through alliance chain to obtain BIM copyright information M when a buyer wants to buy a certain BIM copyrightIPAnd uploading side information MAAnd an uploader public key PKAAnd authenticator information MBAnd the public key PK of the authenticatorBAnd a public key PK of a core node of the federation chain participating in verificationF(ii) a The purchaser uses the upload public key PKAPublic key PK of core node of alliance chain participating in verificationFAnd authenticator public key PKBSequentially verifying, and comparing the obtained information with BIM copyright information M stored in the block chainIPComparing to verify the BIM copyright information MIP。
10. A computer storage medium having stored therein a computer program executable by a processor, the computer program executing the method for copy right protection based on a BIM model of a block chain and a smart contract according to any one of claims 1 to 7.
CN202210005643.XA 2022-01-05 2022-01-05 Copyright protection method and system of BIM (building information modeling) model based on block chain and intelligent contract Pending CN114386147A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115964680A (en) * 2022-12-13 2023-04-14 暨南大学 Copyright protection method based on double-authentication blocking signature and block chain
CN115964680B (en) * 2022-12-13 2023-09-29 暨南大学 Copyright protection method based on double authentication blocking signature and blockchain

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