CN111190936A - Trusted identification association relation query method based on block chain technology, corresponding storage medium and electronic device - Google Patents

Trusted identification association relation query method based on block chain technology, corresponding storage medium and electronic device Download PDF

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CN111190936A
CN111190936A CN201911292750.XA CN201911292750A CN111190936A CN 111190936 A CN111190936 A CN 111190936A CN 201911292750 A CN201911292750 A CN 201911292750A CN 111190936 A CN111190936 A CN 111190936A
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王姝
刘佳
郭志斌
周园春
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Abstract

The invention discloses a credible identification incidence relation query method based on a block chain technology, a corresponding storage medium and an electronic device.A block chain system provides block chain read-write, contract management and access control interfaces for an identification platform, a data release platform and an incidence relation release platform through a block chain platform; the identification platform endows the data publishing platform with an identification prefix and registers the data set identification of the data publishing platform; the incidence relation publishing platform establishes incidence relation between the data set identifications and publishes the incidence relation to the block chain; and inputting the identifier of the data set to be queried as an intelligent contract parameter through an identifier association retrieval interface provided by the block chain platform, and querying the identifier information associated with the data set. The invention completes the business system process and result data chaining by calling the API interface provided by the intelligent contract, and stores the prefix, the identifier and the associated information on the chaining, thereby uniquely preventing tampering and further achieving the credibility of the identifier and the accuracy of data association.

Description

Trusted identification association relation query method based on block chain technology, corresponding storage medium and electronic device
Technical Field
The invention relates to the technical field of information, in particular to a trusted identification incidence relation query method based on a block chain technology, a corresponding storage medium and an electronic device.
Background
Scientific data is an important basic strategic resource for national technological innovation and economic and social development, and the open sharing of data is greatly promoted at the national strategic level. In 2018, in 2 months, the science and technology department and the finance department jointly issue a management method of a national science and technology resource sharing service platform to promote open sharing of science and technology resources to the society. In 2018, 3 months, the office of the State department officials officially released 'scientific data management method', aiming at strengthening and standardizing scientific data management, ensuring the safety of scientific data, improving the open sharing level and better supporting the national technological innovation, the economic and social development and the national safety. The data is inevitably opened and shared, and the data identification is an important hand grip for the data opening and sharing.
Today, scientific data is increasingly exuberant in demand and scientific data sharing is developed vigorously, and identification of scientific data by using an identification technology has great significance. The scientific data identification technology provides a convenient access way for scientific data under an internet environment, and scientific research data can be recognized, quoted, verified and reused more conveniently. However, there are many data identification systems, and identification objects can be divided into physical entities (goods, books, devices, etc.) and virtual entities (pictures, sounds, files, data, software, etc.) according to their representation forms. The identification systems have different isomerism due to different application fields, such as different encoding data formats, carrier modes, application fields, ranges, popularity, identification granularity, sharing modes, systems, interfaces, platforms and the like. The identification systems have different characteristics and are independently developed in the application field, but under the current open trend of scientific data sharing, the data need to be compatible and intercommunicated, and the technical barriers of data intercommunicating exist in the process of acquiring scientific data across industries and platforms.
Chinese patent application CN108563784A discloses a method and system for recording digital resource reference relationship, which comprises the following steps: establishing a reference relation table in a database of a server side; the reference relation table comprises a plurality of record chains, and each record chain comprises a data resource identifier, a referenced resource identifier, a reference relation, a reference difference degree and a hash value of a previous record chain; when the client generates a new resource and uploads the new resource to the server, the server stores the newly generated resource and allocates a resource identifier, generates a new record chain, stores the new record chain in the reference relation table, and returns the new record chain to the client. However, this method cannot prevent tampering, and thus cannot achieve the credibility of the identification and the accuracy of the data reference.
The core problem in data sharing is oriented, the problems of data intercommunication, data safety, data reference, data association and the like in different fields in the data sharing process are solved, a multi-party entity such as an identification fusion platform, a data publishing platform and an association relationship publishing platform participates, and the information such as an identification prefix, a data identification and a data association relationship is truthfully inquired by constructing a logic chain through the identification fusion platform, the data publishing platform and the association relationship publishing platform.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention discloses a trusted identification incidence relation query method based on a block chain technology, a corresponding storage medium and an electronic device, and aims to provide a trusted identification incidence relation query method based on the block chain technology and solve the problem of trusted identification incidence relation query.
A credible identification incidence relation query method based on block chain technology is suitable for a block chain system composed of an identification platform, a data release platform and an incidence relation release platform, and comprises the following steps:
the block chain system provides block chain read-write, contract management and access control interfaces for the identification platform, the data issuing platform and the association relation issuing platform through a block chain platform;
the identification platform endows the data publishing platform with an identification prefix and registers the data set identification of the data publishing platform;
the incidence relation publishing platform establishes incidence relation between data set identifications and publishes the incidence relation to the block chain;
and inputting the identifier of the data set to be queried as an intelligent contract parameter through an identifier association retrieval interface provided by the block chain platform, and querying the identifier information associated with the data set.
Furthermore, the identification platform gives the identification prefix according to the request of the data release platform and the data release platform information, and calls an intelligent contract to write an account book by using the identification prefix information as a parameter, so that the identification prefix information is released to a block chain.
Further, the identification prefix information includes the identification prefix and the data publishing platform name.
Further, before the identification prefix information is written into the account book, the intelligent contract verifies the identity and the authority information of the identification platform.
Further, the data publishing platform acquires the data set identifier, and calls an intelligent contract to write an account book by using the data set identifier information as a parameter, so that the data set identifier information is published to a block chain.
Further, before the identification information is written into the account book, the intelligent contract verifies the identity and authority information of the data issuing platform, whether the registration of the data set identification is successful, whether the association relation between the identification and the URL is consistent and the prefix identity of the data issuing platform.
Furthermore, the incidence relation issuing platform calls an intelligent contract to write an account book by taking the incidence relation as a parameter, so that the incidence relation is issued to the block chain.
Further, before the identification incidence relation is written into the account book, the intelligent contract verifies the identity and the authority information of the incidence relation issuing platform.
A storage medium having a computer program stored therein, wherein the computer program is arranged to perform the above method when executed.
An electronic device comprising a memory and a processor, wherein the memory stores a program that performs the above described method.
Compared with the prior art, the method has the following advantages:
the sub-chain established by two or more specific members in the block chain network is used for protecting the confidentiality of data transaction between the sub-chain members and limiting the propagation range of related transaction. The identification platform, the data publishing platform and the association relationship publishing platform finish the business system process and result data chaining by calling an API (application program interface) provided by an intelligent contract, and prefix, identification and association information are stored on the chaining and are unique and tamper-proof, so that the credibility of the identification and the accuracy of data association are achieved.
Drawings
Fig. 1 is a system diagram of a trusted identity association relationship query method based on a blockchain technique.
Fig. 2 is a schematic diagram illustrating a docking manner of each platform and a blockchain.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the accompanying drawings.
The technical scheme adopts a method of combining the Fabric alliance chain and the identification technology, as shown in figure 1, the method comprises the following steps: the system comprises an identification platform, a data publishing platform, an association relation publishing platform and a block chain platform. The functions of each part are as follows:
1. identification platform
The identification platform provides services of identification registration, identification analysis, metadata retrieval, statistics, citation and the like.
2. Data publishing platform
The data publishing platform registers the identifier to publish the data set publicly to the identifier platform, so that the data set is positioned and addressed, and a user can inquire the identifier on the identifier platform to obtain the published data set.
3. Association relation publishing platform
The association relationship publishing platform provides association information services of the data set, such as reference, belonging, containing and the like, by establishing the association relationship between the identifications.
4. Block chain platform
The blockchain platform provides blockchain read-write, contract management and access control type APIs. The reading, writing and association of the identification can be carried out on the application system interfaces connected with the upper-layer identification platform, the data release platform, the association relationship release platform and the like through the API.
A method for querying a trusted identification incidence relation based on a block chain technology comprises the following specific steps:
1 physical chain creation
Firstly, data physical chain related information needs to be defined, the physical chain is a block chain network alliance established by members in a block chain network, each member in the alliance can start respective physical nodes including CA and peer nodes, and meanwhile, the order nodes can be shared for consensus. The function of the CA node is to provide members of the Fabric with digital certificate based identity information. The Peer node is a node for each coalition member to actually implement the ledger storage, and each organization may contain one or more Peer nodes. The Order node is mainly responsible for ensuring that the nodes on the same chain receive the same message and have the same logic sequence. The identification platform, the data publishing platform and the association relation publishing platform respectively start respective CA and Peer nodes and add the nodes into the physical chain to wait for the creation of the logical chain and the installation of the contract.
2 logical chain creation
The identification platform, the data issuing platform and the association relation issuing platform have access requirements for storing the certificate identification and the association information of the data set, so that a logic chain is established among the identification platform, the data issuing platform and the association relation issuing platform. Logical chain creation requires the appointment of the logical chain name, description and determination of the members to be invited and their permissions. After the logical chain is successfully created, an intelligent contract can be created on the logical chain for data writing and accessing.
3 contract authoring installation and instantiation
After the logical link is established, an administrator, identifying the platform or other members, may write contracts on the blockchain platform and upload the contracts to the blockchain platform. Other administrators of the blockchain platform can choose to install the contract on their own node as an endorsement candidate node, and finally, the member who installs the contract can perform instantiation contract operation. The method comprises the following specific steps:
(1) identification prefix service
The identification platform firstly receives a data publishing platform application identification prefix request, and the identification platform application identification prefix request comprises information such as a data publishing platform name, a unified social credit code, a contact person and the like, and is allocated with an identification prefix after approval of the identification platform. And the identification platform calls the intelligent contract to write the account book by taking the authorized identification prefix information as a parameter. Before the account book is formally written in, the intelligent contract verifies the identity and authority information of the identification platform, and after the verification is passed, prefix information and other related information of the data issuing platform are recorded in the block chain account book.
(2) Identity registration service
After the data publishing platform applies for obtaining the identification prefix, the data set identification can be registered in the identification platform, and the metadata information related to the data set is provided. After successful registration, a data set can be uniquely positioned and addressed through an identifier, a data publishing platform publishes information such as a data set identifier and a data set URL to a block chain, an intelligent contract is called to try to write data set identifier + URL information into an account book, before the account book is formally written, the intelligent contract verifies the identity and authority information of the data publishing platform, meanwhile, an http interface of the identifier platform is called in an intelligent contract endorsement strategy, whether the identifier is successful in registration or not is verified, whether the association relation between the identifier and the URL is consistent or not and the prefix identity of the data publishing platform is authenticated, and the purpose of preventing problematic identifier information is achieved. And after the verification is passed, successfully endorsing, and at the moment, the intelligent contract successfully writes the data set identification, the data set URL and other metadata into the account book.
(3) Identity correlation service
And the incidence relation publishing platform publishes the incidence relation between the identifications to the block chain, and calls the intelligent contract to write the account book by taking the identification incidence relation as a parameter. Before the account book is formally written in, the intelligent contract verifies the identity and authority information of the association relationship issuing platform, and formally records the information in the block chain account book after the verification is passed. After the associated information is formally written into the account book, the data publishing platform can call an intelligent contract to inquire the identification information associated with the data set by inputting the data set identification as a parameter.
(4) Identity association retrieval service
The block chain platform provides an identification correlation retrieval interface, and queries all identification information related to the data set by inputting the identification of the data set to be queried as a parameter of the intelligent contract.
For a block chain platform, the intelligent contract operation related interface is most widely used, and the platform provides an API (application programming interface) based on an HTTP/HTTPS (hyper text transport protocol/hyper text transport protocol) protocol, so that the contract operation becomes simpler and more efficient. In order to improve the chaining efficiency of each existing system, a service interface API is packaged, complex calling is simplified through an intelligent contract SDK, and the system and a block chain platform are convenient to integrate. The manner in which each platform interfaces with the blockchain is shown in fig. 2.
The method is described in detail below with reference to an example.
By using the method, the block chain technology is used for establishing the alliance chain, and the credible identification incidence relation query is realized.
The trusted identification + data association service based on the block chain mainly comprises the following four steps:
step 1
Data center, journal application identification prefix
The identification platform links the identification prefix information of the data center and the periodical platform, for example:
data center identification prefix Data center name
21.86116.7 National space science data center
Step 2
Data center and journal registration mark
The data center links the registered data set identifier, such as:
Figure BDA0002319669360000051
step 3
Periodical associated data center data set
The journal platform links the paper identification information and the data set identification information associated with the paper, such as:
Figure BDA0002319669360000052
step 4
The block chain platform provides an identification correlation retrieval interface, and inquires all thesis identification information correlated with the data set by inputting the identification of the data set to be inquired.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims (10)

1. A credible identification incidence relation query method based on block chain technology is suitable for a block chain system composed of an identification platform, a data release platform and an incidence relation release platform, and comprises the following steps:
the block chain system provides block chain read-write, contract management and access control interfaces for the identification platform, the data issuing platform and the association relation issuing platform through a block chain platform;
the identification platform endows the data publishing platform with an identification prefix and registers the data set identification of the data publishing platform;
the incidence relation publishing platform establishes incidence relation between data set identifications and publishes the incidence relation to the block chain;
and inputting the identifier of the data set to be queried as an intelligent contract parameter through an identifier association retrieval interface provided by the block chain platform, and querying the identifier information associated with the data set.
2. The method of claim 1, wherein the identification platform assigns the identification prefix according to the request of the data publishing platform and data publishing platform information, and calls an intelligent contract to write an account book by using the identification prefix information as a parameter, so that the identification prefix information is published on a block chain.
3. The method of claim 2, wherein the identification prefix information includes the identification prefix, the data publishing platform name; before the identification prefix information is written into the account book, the intelligent contract verifies the identity and the authority information of the identification platform.
4. The method of claim 1, wherein the data publishing platform obtains the data set identification and calls an intelligent contract to perform ledger writing with data set identification information as a parameter, so that the data set identification information is published onto a blockchain.
5. The method of claim 4, wherein the data set identification information comprises the data set identification, a data set URL, and data set metadata.
6. The method of claim 4, wherein prior to the identification information being written to the ledger, the smart contract verifies identity and permission information of the data distribution platform, whether the data set identification was a successful registration, whether the identification is consistent with the URL association, and the identification prefix of the data distribution platform.
7. The method of claim 1, wherein the incidence relation publishing platform invokes an intelligent contract for ledger writing with the incidence relation as a parameter to publish the incidence relation onto a blockchain.
8. The method of claim 7, wherein the intelligent contract verifies identity and rights information of the association publishing platform before the identified association is written to the ledger.
9. A storage medium having a computer program stored thereon, wherein the computer program is arranged to, when run, perform the method of any of claims 1-8.
10. An electronic device comprising a memory having a computer program stored therein and a processor arranged to run the computer program to perform the method according to any of claims 1-8.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111813999A (en) * 2020-08-13 2020-10-23 广州东港安全印刷有限公司 Method for improving expandability of intelligent contract field of Etheng
CN112131228A (en) * 2020-09-29 2020-12-25 上海卓钢链科技有限公司 FABRIC-based alliance chain system convenient for data retrieval
CN112469044A (en) * 2020-12-17 2021-03-09 国网辽宁省电力有限公司信息通信分公司 Edge access control method and controller for heterogeneous terminal
CN113114498A (en) * 2021-04-08 2021-07-13 同方股份有限公司 Architecture system of trusted block chain service platform and construction method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107656981A (en) * 2017-09-08 2018-02-02 中国科学院计算机网络信息中心 A kind of data sharing and management method and system based on identification technology
CN108563784A (en) * 2018-04-26 2018-09-21 福建中锐海沃科技有限公司 A kind of digital resource adduction relationship recording method and system
CN108710643A (en) * 2018-04-20 2018-10-26 广东省科技基础条件平台中心 Data sharing method, device, computer equipment and storage medium
US20190018862A1 (en) * 2017-07-14 2019-01-17 Alibaba Group Holding Limited Blockchain based data processing method and device
CN109635221A (en) * 2018-12-06 2019-04-16 山东大学 Paper publishing evaluation sharing method and system based on block chain

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190018862A1 (en) * 2017-07-14 2019-01-17 Alibaba Group Holding Limited Blockchain based data processing method and device
CN107656981A (en) * 2017-09-08 2018-02-02 中国科学院计算机网络信息中心 A kind of data sharing and management method and system based on identification technology
CN108710643A (en) * 2018-04-20 2018-10-26 广东省科技基础条件平台中心 Data sharing method, device, computer equipment and storage medium
CN108563784A (en) * 2018-04-26 2018-09-21 福建中锐海沃科技有限公司 A kind of digital resource adduction relationship recording method and system
CN109635221A (en) * 2018-12-06 2019-04-16 山东大学 Paper publishing evaluation sharing method and system based on block chain

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
周园春等: "SKS:一种科技领域大数据知识图谱平台", 《数据与计算发展前沿》 *
郝世博等: "科学数据共享区块链模型及实现机理研究", 《情报理论与实践》 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111813999A (en) * 2020-08-13 2020-10-23 广州东港安全印刷有限公司 Method for improving expandability of intelligent contract field of Etheng
CN111813999B (en) * 2020-08-13 2024-01-05 广州科创空间信息科技有限公司 Method for improving expansibility of intelligent contract field of Ethernet
CN112131228A (en) * 2020-09-29 2020-12-25 上海卓钢链科技有限公司 FABRIC-based alliance chain system convenient for data retrieval
CN112131228B (en) * 2020-09-29 2023-12-19 上海卓钢链科技有限公司 FABRIC-based alliance chain system convenient for data retrieval
CN112469044A (en) * 2020-12-17 2021-03-09 国网辽宁省电力有限公司信息通信分公司 Edge access control method and controller for heterogeneous terminal
CN112469044B (en) * 2020-12-17 2023-07-11 国网辽宁省电力有限公司信息通信分公司 Edge access control method and controller for heterogeneous terminal
CN113114498A (en) * 2021-04-08 2021-07-13 同方股份有限公司 Architecture system of trusted block chain service platform and construction method thereof
CN113114498B (en) * 2021-04-08 2022-06-07 同方股份有限公司 Architecture system of trusted block chain service platform and construction method thereof

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