CN114844896A - Resource sharing method and system based on block chain - Google Patents
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Abstract
The invention discloses a resource sharing method and system based on a block chain, and relates to the technical field of block chains. The method comprises the following steps: the block chain represents a user node B 'under the node B to request the resource sharing of the block chain representing the user node A' under the node A, and the representing node A receives a resource sharing request sent by the representing node B; the representative node A acquires a plurality of associated nodes associated with the user node A ', and sends the attribute data of the user node B ' to the associated nodes and the user node A '; receiving the returned node trust level; and calculating to obtain final trust according to the node trust returned by each associated node, if the final trust is higher than a set value, allowing access, and if the final trust is lower than the set value, denying access. By adopting the technical scheme, the accuracy and the safety of node resource sharing in the block chain can be improved.
Description
Technical Field
The present invention relates to the field of block chain technologies, and in particular, to a resource sharing method and system based on a block chain.
Background
The blockchain is a decentralized and distrusted reliable database maintained collectively, and is essentially a shared database, and the data or information stored in the database has the characteristics of unforgeability, trace in the whole process, traceability, openness and transparency, collective maintenance and the like. Based on the characteristics, the block chain technology lays a solid trust foundation, creates a reliable cooperation mechanism and has wide application prospect.
The existing block chain resource sharing basically does not perform security processing on nodes belonging to the same private chain or alliance chain, data sharing is directly allowed to be performed on the nodes in the private chain or alliance chain, the nodes not belonging to the same private chain or alliance chain send resource sharing requests to the nodes receiving the requests by the nodes initiating the requests, and the receiving nodes determine whether to allow resource sharing or not, so that a large number of node access operations occur, the operation efficiency is low, and the security processing of the receiving nodes possibly limits resource sharing of certain security nodes so that data sharing is forced to be terminated.
Disclosure of Invention
The invention provides a resource sharing method based on a block chain, which comprises the following steps:
the block chain represents a user node B 'under the node B to request the resource sharing of the block chain representing the user node A' under the node A, and the block chain represents the node A to receive the resource sharing request sent by the block chain representing the node B;
the block chain represents a node A to acquire a plurality of associated nodes associated with a user node A ', acquires user node B' attribute data from a resource sharing request, and sends the acquired user node B 'attribute data to the associated nodes and the user node A';
each associated node and the user node A' calculate the received attribute data to obtain the node trust degree, and the node trust degree of each user node is returned to the block chain representative node A;
and the block chain represents that the node A calculates to obtain final trust according to the node trust degrees returned by the associated nodes, if the final trust degrees are higher than a set value, the user node B 'is allowed to access, and if the final trust degrees are lower than the set value, the user node B' is refused to access.
The method for sharing resources based on the blockchain as described above, wherein the blockchain includes a plurality of blocks, each of the blocks has a representative node, and the user registers a decentralized identity at the representative node when joining the blockchain, so as to become a trusted user node below the representative node.
The method for resource sharing based on the blockchain as described above, wherein other user nodes associated with each user node are stored in the blockchain representative node, the association relationships are set when the user nodes are registered, the user nodes are sorted according to the association relationships, a plurality of association nodes are selected from top to bottom, and the user node B 'attribute data of the blockchain representative node B is sent to the association nodes and the user node a'.
The resource sharing method based on the block chain is characterized in that the node trust degree of each associated node to the user node B 'is calculated according to the attribute data of the user node B' and the attribute data of each associated node, and the attribute data includes a service category and a service core value.
The resource sharing method based on the block chain is characterized in that the final trust degree is calculated according to the node trust degree of each associated node to the user node B' and the associated value of the associated node.
The present invention further provides a resource sharing system based on a block chain, including a plurality of blocks, where each block has a representative node, and when a user node B 'under the block chain representative node B wants to request resource sharing of a user node a' under the block chain representative node a, the block chain representative node a specifically includes:
a request receiving module, configured to receive a resource sharing request sent by a blockchain on behalf of a node B; the system is also used for receiving the node trust degrees returned by each associated node and the user node A';
the data distribution module is used for acquiring a plurality of associated nodes associated with the user node A ', acquiring the attribute data of the user node B' from the resource sharing request, and sending the acquired attribute data of the user node B 'to the associated nodes and the user node A';
and the auditing module is used for calculating to obtain final trust according to the node trust degrees returned by the associated nodes of each block chain, allowing the user node B 'to access if the final trust degrees are higher than a set value, and denying the user node B' to access if the final trust degrees are lower than the set value.
The resource sharing system based on the blockchain is characterized in that the represented node is a trusted user node, and the represented node is a decentralized identity registered by a user.
The resource sharing system based on the blockchain as described above, wherein other user nodes associated with each user node are stored in the blockchain representative node, the association relationship is set when the user nodes are registered, the association relationships are sorted according to the association relationship, a plurality of association nodes are selected from top to bottom, and the user node B 'attribute data of the blockchain representative node B is sent to the association nodes and the user node a'.
The resource sharing system based on the block chain, wherein the associated node and the user node a ' calculate the node trust level, specifically calculate the node trust level of each associated node to the user node B ' according to the attribute data of the user node B ' and the attribute data of each associated node, and the attribute data includes the service category and the service core value.
The resource sharing system based on the block chain is specifically configured to calculate the final trust level according to the node trust level of each associated node to the user node B' and the associated value of the associated node.
The invention has the following beneficial effects: by adopting the technical scheme, the representative node with higher security level in the block chain processes the resource sharing among the blocks, and the representative node adopts a multi-node decision mechanism to decide whether the resource sharing condition is met or not according to a plurality of user nodes under the representative node, so that the security of node data sharing in the block chain is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a flowchart of a resource sharing method based on a block chain according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a resource sharing system based on a block chain according to a second embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are 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 some, not all, embodiments of the present invention. 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.
Example one
As shown in fig. 1, an embodiment of the present invention provides a resource sharing method based on a block chain, including:
the block chain includes a plurality of blocks, for example, a block a, a block B, and a block C, where each block has a representative node, that is, the representative node of the block a is a1, the representative node of the block B is B1, and the representative node of the block C is C1, a user registers DID (decentralized identity) at the representative node when joining the block chain, becomes a user node that is trusted under the representative node, for example, user nodes a2, A3 register under the representative node a1, becomes a block link point of the block a, user nodes B2, B3, B4 register under the representative node B1, and block link points user nodes C2, C3, C4, C54 that become the block B register under the representative node C1, become a block chain node of the block C.
When a subordinate user node of tile a is to request resource sharing by a subordinate user node in tile B, e.g., subordinate user node a2 of tile a is to request resource sharing by subchain B subordinate user node B3, a resource-carrying sharing request is sent by tile a's blockchain delegate node a1 to blockchain delegate node B.
specifically, other user nodes associated with each user node are stored in the blockchain representative node, the association relationship is set when the user nodes are registered, the association relationships are sorted according to the association relationship, a plurality of association nodes are selected from top to bottom (the number of the selected nodes can be preset, for example, five user nodes with higher association relationship with the user node B ' are selected), and the user node B ' attribute data of the blockchain representative node B is sent to the association nodes and the user node a '.
specifically, the node trust degree of each associated node to the user node B 'is calculated according to the attribute data of the user node B' and the attribute data of each associated node, and a formula is specifically adopted
Computing node trust, wherein XR i Representing the node trust degree of the ith block chain associated node under the block chain representing node A to the user node B';
the total number of the service classes of the service class of the user node B' belonging to the service class of the ith block chain associated node under the block chain representative node A is represented; psi i The total number of the service types of the service type of the user node B' which does not belong to the service type of the ith block chain associated node under the block chain representative node A is represented; the value of i is 1 to N, and N is the total number of the associated nodes; GH i A traffic core value representing the ith blockchain associated node of the blockchain representative node a, KH represents the traffic core value of the user node B', the traffic core value being a predetermined value at the time of registration of the user node at the representative node.
Step 140, the blockchain representative node a calculates to obtain a final trust level according to the received node trust level, if the final trust level is higher than a set value, the user node B 'is allowed to access, and if the final trust level is lower than the set value, the user node B' is denied access;
in particular, using the formula
Calculating the final confidence level, wherein S is the final confidence level calculated by the block chain representing the node A and is mu i Weight of influence of the confidence level calculated for each blockchain user node on the final confidence level calculation, XR i Node trust for the ith associated node, GL i The association degree of the ith association node with other association points,
the value of i is 1 to N, and N is the total number of the associated nodes.
When each block requests resource sharing to nodes of other blocks, a representative node of the block sends a resource sharing request to a representative node of another block, the requested representative node sends the resource sharing request to a corresponding user node and also needs to send the resource sharing request to other user nodes with higher association relation with the requested user node, the other association nodes are requested to verify the requesting node, and the representative nodes summarize verification results of the association nodes and the requested node, so that whether the resource sharing of the block initiating the request can be comprehensively determined, the resource security of the requested node can be prevented from being ensured, and the security of other user nodes under the block can be prevented from being influenced after the requested user node is privately allowed to be accessed.
Example two
As shown in fig. 2, a second embodiment of the present invention provides a resource sharing system 2 based on a block chain, including a plurality of blocks, where each block has a representative node, a user registers a decentralized identity at the representative node when joining the block chain, so as to become a trusted user node below the representative node, and when a user node B ' below the block chain represents a user node B ' below the node B and wants to request resource sharing of a user node a ' below the block chain representative node a, the block chain representative node a specifically includes:
a request receiving module 21, configured to receive a resource sharing request sent by a blockchain on behalf of a node B; the system is also used for receiving the node trust degrees returned by the associated nodes;
a data allocation module 22, configured to obtain a plurality of associated nodes associated with the user node a ', obtain attribute data of the user node B' from the resource sharing request, and send the obtained attribute data of the user node B 'to the associated nodes and the user node a';
specifically, other user nodes associated with each user node are stored in the blockchain representative node, the association relationship is set when the user nodes are registered, the association relationships are sorted according to the association relationship, a plurality of association nodes are selected from top to bottom (the number of the selected nodes can be preset, for example, five user nodes with higher association relationship with the user node B ' are selected), and the user node B ' attribute data of the blockchain representative node B is sent to the association nodes and the user node a '.
The auditing module 23 is configured to calculate a final trust level according to the node trust level of each associated node to the user node B ' and the associated value of the associated node, allow the user node B ' to access if the final trust level is higher than a set value, and deny the user node B ' access if the final trust level is lower than the set value.
In particular, using the formula
Calculating the final confidence level, wherein S is the final confidence level calculated by the block chain representing the node A and is mu i Weight of influence of the confidence level calculated for each blockchain user node on the final confidence level calculation, XR i Node trust for the ith associated node, GL i The association degree of the ith association node with other association points,
the correlation degree of the ith correlation node is the ratio of the correlation degrees of all the correlation nodes, the value of i is 1 to N, and N is the total number of the correlation nodes.
The associated node calculates the node trust degree, specifically, the node trust degree of each associated node to the user node B 'is calculated according to the attribute data of the user node B' and the attribute data of each associated node, and the attribute data includes a service category and a service core value.
Specifically, the node trust degree of each associated node to the user node B 'is calculated according to the attribute data of the user node B' and the attribute data of each associated node, and a formula is specifically adopted
Computing node trust, wherein XR i Representing the node trust degree of the ith block chain associated node under the block chain representing node A to the user node B';
the total number of the service classes of the service class of the user node B' belonging to the service class of the ith block chain associated node under the block chain representative node A is represented; psi i The total number of the service types of the associated nodes of the ith block chain under the representative node A of the block chain is not represented by the service type of the user node B'; the value of i is 1 to N, and N is the total number of the associated nodes; GH i Traffic representing the ith blockchain associated node of blockchain representative node AThe core value, KH represents the traffic core value of the user node B', which is a predetermined value of the user node when registered at the delegate node.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.
Claims (10)
1. A resource sharing method based on block chains is characterized by comprising the following steps:
the block chain represents a user node B 'under the node B to request the resource sharing of the block chain representing the user node A' under the node A, and the block chain represents the node A to receive the resource sharing request sent by the block chain representing the node B;
the block chain represents a node A to acquire a plurality of associated nodes associated with a user node A ', acquires user node B' attribute data from a resource sharing request, and sends the acquired user node B 'attribute data to the associated nodes and the user node A';
each associated node and the user node A' calculate the received attribute data to obtain the node trust degree, and the node trust degree of each user node is returned to the block chain representative node A;
and the block chain represents the node A to obtain the final trust degree according to the returned node trust degree, if the final trust degree is higher than the set value, the user node B 'is allowed to access, and if the final trust degree is lower than the set value, the user node B' is refused to access.
2. The method as claimed in claim 1, wherein the blockchain comprises a plurality of blocks, each of the blocks having a representative node, and the user registers a decentralized identity at the representative node when joining the blockchain, so as to become a trusted user node under the representative node.
3. The method as claimed in claim 1, wherein the blockchain representative node stores other user nodes associated with each user node, the association relationship is set when the user nodes are registered, the association relationships are sorted according to the association relationship, a plurality of association nodes are selected from top to bottom, and the user node B 'attribute data of the blockchain representative node B is sent to the association nodes and the user node a'.
4. The method as claimed in claim 1, wherein the node trust level of each associated node for the user node B 'is calculated according to the attribute data of the user node B' and the attribute data of each associated node, and the attribute data includes a service class and a service core value.
5. The method as claimed in claim 1, wherein the final trust level is calculated according to the node trust level of each associated node with respect to the user node B' and the associated value of the associated node.
6. A resource sharing system based on a block chain, comprising a plurality of blocks, wherein each block has a representative node, and when a block chain represents a user node B 'under the node B and wants to request resource sharing of a block chain representative node a' under the node a, the block chain representative node a specifically comprises:
a request receiving module, configured to receive a resource sharing request sent by a blockchain on behalf of a node B; the system is also used for receiving the node trust degrees returned by each associated node and the user node A';
the data distribution module is used for acquiring a plurality of associated nodes associated with the user node A ', acquiring the attribute data of the user node B' from the resource sharing request, and sending the acquired attribute data of the user node B 'to the associated nodes and the user node A';
and the auditing module is used for calculating to obtain final trust according to the node trust degrees returned by the associated nodes of each block chain, allowing the user node B 'to access if the final trust degrees are higher than a set value, and denying the user node B' to access if the final trust degrees are lower than the set value.
7. The system of claim 6, wherein the user registers the decentralized identity with the representative node when joining the blockchain to become a trusted user node under the representative node.
8. The system as claimed in claim 6, wherein the blockchain representative node stores other user nodes associated with each user node, the association relationship is set when the user nodes are registered, the association relationships are sorted according to the association relationship, a plurality of association nodes are selected from top to bottom, and the user node B 'attribute data of the blockchain representative node B is sent to the association nodes and the user node a'.
9. The system according to claim 6, wherein the associated node and the user node a ' calculate the node trust level, specifically calculate the node trust level of each associated node to the user node B ' according to the attribute data of the user node B ' and the attribute data of each associated node, and the attribute data includes the service class and the service core value.
10. The system according to claim 6, wherein the auditing module is specifically configured to calculate the final trust level according to the node trust level of each associated node with respect to the user node B' and the associated value of the associated node.
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