CN113111069A - Data sharing method and system based on block chain - Google Patents
Data sharing method and system based on block chain Download PDFInfo
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- CN113111069A CN113111069A CN202110485019.XA CN202110485019A CN113111069A CN 113111069 A CN113111069 A CN 113111069A CN 202110485019 A CN202110485019 A CN 202110485019A CN 113111069 A CN113111069 A CN 113111069A
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Abstract
The invention discloses a data sharing method and a system based on a block chain, wherein the method comprises the following steps: a plurality of nodes in a block chain sign alliance treaties and establish regional autonomous alliances; acquiring a data sharing request from any node; judging whether a node initiating a data sharing request belongs to a node in a regional autonomous union or not; if the nodes belong to the nodes in the regional autonomous alliance, acquiring shared data corresponding to the nodes, uploading the shared data to the regional autonomous alliance, and broadcasting the shared data to each node of the regional autonomous alliance for storage; if the data sharing request does not belong to the node in the regional autonomous alliance, judging whether the data sharing request meets the sharing access requirement of the regional autonomous alliance, if so, allowing the data sharing request, and recording the data sharing request by adding a timestamp; if not, the data sharing request is rejected. The invention effectively reduces the management complexity through the autonomy of each node and improves the management efficiency of data sharing among the nodes.
Description
Technical Field
The present invention relates to the field of data sharing technologies, and in particular, to a data sharing method and system based on a block chain.
Background
In order to ensure data security, the traditional data sharing mostly adopts an offline transmission method, the real-time performance of the method is not strong, and the problems that the consequences such as data loss and errors caused by negligence of personnel are difficult to track and the like are very obvious. With the popularization of the internet, the on-line data sharing becomes a main mode of data transmission, and has obvious advantages in timeliness compared with the off-line transmission mode. However, in recent years, internet data has exploded greatly, and higher requirements are put forward for safe and efficient data sharing means such as data supervision, privacy protection, large-capacity data storage, data fast transmission and the like.
The block chain is a technology combined by technologies such as cryptography, network and distributed storage, the characteristics of decentralization, non-tampering of information on the chain and the like of the block chain can originally solve the problem of traditional centralized access, and meanwhile, the combination of the block chain and a data sharing technology can also provide bottom-layer data construction capability for data sharing. Therefore, the application research of the enhanced block chain technology on data sharing is of great significance.
Disclosure of Invention
The invention aims to provide a data sharing method and a data sharing system based on a block chain, which effectively reduce the management complexity and improve the management efficiency of data sharing among nodes through the autonomy of each node.
In order to achieve the purpose, the invention provides the following scheme:
a data sharing method based on a block chain comprises the following steps:
s1, signing a federation treaty by a plurality of nodes in the block chain, and establishing an area autonomous federation;
s2, acquiring a data sharing request from any node;
s3, judging whether the node initiating the data sharing request belongs to the node in the regional autonomous alliance;
s4, if the node belongs to the node in the regional autonomous alliance, the shared data corresponding to the node is obtained and uploaded to the regional autonomous alliance, and the shared data is broadcasted to each node of the regional autonomous alliance to be stored;
s5, if not belonging to the node in the regional autonomous alliance, judging whether the data sharing request accords with the sharing access requirement of the regional autonomous alliance, if so, allowing the data sharing request, and recording the data sharing request with a timestamp; if not, rejecting the data sharing request.
Further, in the step S1, multiple nodes in the block chain sign a federation treaty to establish an area autonomous federation, which specifically includes:
each node collects and summarizes self data, performs data preprocessing, and formulates data subjected to data preprocessing into a shared label;
generating an identity and an identity data block which are uniquely corresponding to each node;
storing the identity identification data blocks of all the nodes in a chained mode to obtain identity identification data blocks;
and broadcasting the identity identification data blocks in the regional autonomous alliance according to the time sequence, so that the identity identification data blocks are stored in each node of the regional autonomous alliance according to the time sequence.
Further, the data preprocessing comprises removing duplicate data and invalid data.
Further, in step S3, determining whether the node initiating the data sharing request belongs to a node in the regional autonomous federation specifically includes:
the data sharing request comprises the identity identification information of the node;
and comparing the identity identification information in the acquired data sharing request with all the identity identification information stored in the alliance chain, and judging whether the node initiating the data sharing request belongs to the nodes in the regional autonomous alliance.
Further, in step S5, the regional autonomous alliance determining whether the current data sharing request meets the sharing access requirement, specifically including:
each node of the regional autonomous alliance judges whether the data sharing request is allowed or not;
the sharing access requirement of the regional autonomous alliance is that the number of the nodes which allow the current sharing request in the regional autonomous alliance is not less than 60% of the total number of the nodes.
Further, the method also includes a data sharing operation between the nodes in the regional autonomous alliance, including:
acquiring a data request instruction sent by a node A, wherein the data request instruction is used for acquiring target data;
determining a node B providing the target data according to the data request instruction, and sending a sharing instruction to the node B;
and after receiving the sharing instruction, the node B sends target data to the node A.
The invention also provides a data sharing system based on the block chain, which is applied to the data sharing method based on the block chain, and comprises the following steps:
the regional autonomous alliance building module is used for signing alliance treaties by a plurality of nodes in a block chain and building a regional autonomous alliance;
a data sharing request acquisition module, configured to acquire a data sharing request from any node;
the node judgment module is used for judging whether the node initiating the data sharing request belongs to the nodes in the regional autonomous alliance or not;
the data uploading module is used for acquiring corresponding shared data and uploading the shared data to each node of the regional autonomous alliance when the node belongs to the node in the regional autonomous alliance;
the sharing request judging module is used for judging whether the data sharing request meets the sharing access requirement of the regional autonomous alliance or not;
and the data sharing module is used for sharing data among all nodes in the regional autonomous alliance.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: according to the data sharing method and system based on the block chain, provided by the invention, through establishing the regional autonomous alliance, mutual constraint and mutual supervision among internal nodes can be realized, the problem of information isolated island is avoided, and the management complexity is effectively reduced through the autonomy of each node; and for the node sending the data sharing request, monitoring the node performing data sharing is realized by judging whether the node belongs to the regional autonomous alliance node and whether the regional autonomous alliance sharing access requirement is met, and the management efficiency of data sharing is improved.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a data sharing method based on a block chain according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The invention aims to provide a data sharing method and system based on a block chain, which have simple transaction form, effectively reduce the management complexity through the autonomy of each node and improve the management efficiency of data sharing among the nodes.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, a method for sharing data based on a block chain according to an embodiment of the present invention includes the following steps:
s1, signing a federation treaty by a plurality of nodes in the block chain, and establishing an area autonomous federation;
s2, acquiring a data sharing request from any node;
s3, judging whether the node initiating the data sharing request belongs to the node in the regional autonomous alliance; the method specifically comprises the following steps:
the data sharing request comprises the identity identification information of the node;
comparing the identity identification information in the acquired data sharing request with all the identity identification information stored in the alliance chain, and judging whether the node initiating the data sharing request belongs to the nodes in the regional autonomous alliance or not;
s4, if the node belongs to the node in the regional autonomous alliance, the shared data corresponding to the node is obtained and uploaded to the regional autonomous alliance, and the shared data is broadcasted to each node of the regional autonomous alliance to be stored;
s5, if not belonging to the node in the regional autonomous alliance, judging whether the data sharing request accords with the sharing access requirement of the regional autonomous alliance, if so, allowing the data sharing request, and recording the data sharing request with a timestamp; if not, rejecting the data sharing request.
In step S1, multiple nodes in the block chain sign a federation treaty to establish an area autonomous federation, which specifically includes:
each node collects and summarizes self data, performs data preprocessing, and formulates data subjected to data preprocessing into a shared label;
generating an identity and an identity data block which are uniquely corresponding to each node;
storing the identity identification data blocks of all the nodes in a chained mode to obtain identity identification data blocks;
and broadcasting the identity identification data blocks in the regional autonomous alliance according to the time sequence, so that the identity identification data blocks are stored in each node of the regional autonomous alliance according to the time sequence. The data preprocessing includes removing duplicate data and invalid data.
In step S5, the regional autonomous alliance determines whether the current data sharing request meets the sharing access requirement, and specifically includes:
each node of the regional autonomous alliance judges whether the data sharing request is allowed or not;
the sharing access requirement of the regional autonomous alliance is that the number of the nodes which allow the current sharing request in the regional autonomous alliance is not less than 60% of the total number of the nodes.
In addition, the method provided by the invention also comprises the data sharing operation among all nodes in the regional autonomous alliance, and the method comprises the following steps:
acquiring a data request instruction sent by a node A, wherein the data request instruction is used for acquiring target data;
determining a node B providing the target data according to the data request instruction, and sending a sharing instruction to the node B;
and after receiving the sharing instruction, the node B sends target data to the node A.
In the data sharing method based on the block chain provided in this embodiment, the sharing request sent by each node includes the identity information of the node, the obtained identity information is compared with all the identity information in the regional autonomous federation to determine whether the sharing node sent belongs to the sharing node of the federation chain, if the sharing node belongs to the sharing node of the regional autonomous federation, the sharing data of the node is shared, and the access operation joint timestamp is recorded, and the records are periodically broadcast in the regional autonomous federation to record the sharing data to the tail of the data block of the federation chain to form a new data block, and the new data block is stored in each sharing node of the federation chain.
The invention also provides a data sharing system based on the block chain, which is applied to the data sharing method based on the block chain, and comprises the following steps:
the regional autonomous alliance building module is used for signing alliance treaties by a plurality of nodes in a block chain and building a regional autonomous alliance;
a data sharing request acquisition module, configured to acquire a data sharing request from any node;
the node judgment module is used for judging whether the node initiating the data sharing request belongs to the nodes in the regional autonomous alliance or not;
the data uploading module is used for acquiring corresponding shared data and uploading the shared data to each node of the regional autonomous alliance when the node belongs to the node in the regional autonomous alliance;
the sharing request judging module is used for judging whether the data sharing request meets the sharing access requirement of the regional autonomous alliance or not;
and the data sharing module is used for sharing data among all nodes in the regional autonomous alliance.
According to the data sharing method and system based on the block chain, provided by the invention, through establishing the regional autonomous alliance, mutual constraint and mutual supervision among internal nodes can be realized, the problem of information isolated island is avoided, and the management complexity is effectively reduced through the autonomy of each node; and for the node sending the data sharing request, monitoring the node performing data sharing is realized by judging whether the node belongs to the regional autonomous alliance node and whether the regional autonomous alliance sharing access requirement is met, and the management efficiency of data sharing is improved.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (7)
1. A data sharing method based on a block chain is characterized by comprising the following steps:
s1, signing a federation treaty by a plurality of nodes in the block chain, and establishing an area autonomous federation;
s2, acquiring a data sharing request from any node;
s3, judging whether the node initiating the data sharing request belongs to the node in the regional autonomous alliance;
s4, if the node belongs to the node in the regional autonomous alliance, the shared data corresponding to the node is obtained and uploaded to the regional autonomous alliance, and the shared data is broadcasted to each node of the regional autonomous alliance to be stored;
s5, if not belonging to the node in the regional autonomous alliance, judging whether the data sharing request accords with the sharing access requirement of the regional autonomous alliance, if so, allowing the data sharing request, and recording the data sharing request with a timestamp; if not, rejecting the data sharing request.
2. The method for sharing data based on blockchain according to claim 1, wherein in the step S1, a plurality of nodes in the blockchain sign a federation treaty to establish an regional autonomous federation, specifically comprising:
each node collects and summarizes self data, performs data preprocessing, and formulates data subjected to data preprocessing into a shared label;
generating an identity and an identity data block which are uniquely corresponding to each node;
storing the identity identification data blocks of all the nodes in a chained mode to obtain identity identification data blocks;
and broadcasting the identity identification data blocks in the regional autonomous alliance according to the time sequence, so that the identity identification data blocks are stored in each node of the regional autonomous alliance according to the time sequence.
3. The blockchain-based data sharing method according to claim 2, wherein the data preprocessing includes removing duplicate data and invalid data.
4. The method according to claim 2, wherein in step S3, determining whether the node that initiates the data sharing request belongs to a node in an regional autonomous alliance specifically includes:
the data sharing request comprises the identity identification information of the node;
and comparing the identity identification information in the acquired data sharing request with all the identity identification information stored in the alliance chain, and judging whether the node initiating the data sharing request belongs to the nodes in the regional autonomous alliance.
5. The method according to claim 1, wherein in step S5, the regional autonomous union determines whether the current data sharing request meets a sharing access requirement, and specifically includes:
each node of the regional autonomous alliance judges whether the data sharing request is allowed or not;
the sharing access requirement of the regional autonomous alliance is that the number of the nodes which allow the current sharing request in the regional autonomous alliance is not less than 60% of the total number of the nodes.
6. The blockchain-based data sharing method according to claim 1, wherein the method further includes a data sharing operation between the nodes in the regional autonomous federation, including:
acquiring a data request instruction sent by a node A, wherein the data request instruction is used for acquiring target data;
determining a node B providing the target data according to the data request instruction, and sending a sharing instruction to the node B;
and after receiving the sharing instruction, the node B sends target data to the node A.
7. A block chain based data sharing system, applied to the block chain based data sharing method of any one of claims 1 to 6, comprising:
the regional autonomous alliance building module is used for signing alliance treaties by a plurality of nodes in a block chain and building a regional autonomous alliance;
a data sharing request acquisition module, configured to acquire a data sharing request from any node;
the node judgment module is used for judging whether the node initiating the data sharing request belongs to the nodes in the regional autonomous alliance or not;
the data uploading module is used for acquiring corresponding shared data and uploading the shared data to each node of the regional autonomous alliance when the node belongs to the node in the regional autonomous alliance;
the sharing request judging module is used for judging whether the data sharing request meets the sharing access requirement of the regional autonomous alliance or not;
and the data sharing module is used for sharing data among all nodes in the regional autonomous alliance.
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| CN107135209A (en) * | 2017-04-21 | 2017-09-05 | 天津理工大学 | A kind of data sharing method based on block chain |
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