CN112883113A - Block chain-based data value certificate and verification proving and recording method and device - Google Patents
Block chain-based data value certificate and verification proving and recording method and device Download PDFInfo
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- CN112883113A CN112883113A CN202110197450.4A CN202110197450A CN112883113A CN 112883113 A CN112883113 A CN 112883113A CN 202110197450 A CN202110197450 A CN 202110197450A CN 112883113 A CN112883113 A CN 112883113A
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- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
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Abstract
The present disclosure relates to a block chain-based data value certificate and verification proving and recording method and apparatus, including: receiving a data value certificate and a verification certificate; extracting an independent verification identifier and a value certification identifier; obtaining a first hash value according to the block chain node and the independent verification identifier, and obtaining a second hash value according to the type of the trust probe and the neighbor block chain node connected with the block chain node; constructing a vector matrix by taking the first hash value as a row vector and the second hash value as a transposed vector, and inquiring whether a recording path identical to the vector matrix exists or not by taking the independent verification identifier and the vector matrix as recording paths; if the same recording path exists, the recording path address and the port key are obtained, based on the recording path address and the port key, the certificate and the vector matrix are recorded under the recording path by taking the independent verification mark as a starting point and taking the sum of the first hash value and the second hash value as an end point, and the data value certificate and the verification certification and the recording safety can be improved.
Description
Technical Field
The invention relates to the technical field of block chains, in particular to a block chain-based data value certificate and verification proving and recording method and device.
Background
In the big data era, data has become a new economic asset class like money or gold. Mass data has certain value, the data value is different according to different data classification, and the data value is usually expressed by a data value certificate and verification, so the certification and the record of the data value certificate and the verification are very important. In the related art, however, in the current system for recording and proving the data value voucher and verification, because large-scale data need to share resources with each other, the data value voucher and verification are also used for transaction in a large scale, so that the security of the data value voucher and verification is low, and the security requirements of the data value voucher and verification in the actual transaction process are difficult to meet.
Disclosure of Invention
In view of the above, an object of the present disclosure is to provide a block chain-based data value certificate and verification proving and recording method and apparatus, so as to solve the problem of low security of the data value certificate and verification recorded in the related art.
Based on the above object, a first aspect of the present disclosure provides a block chain-based data value certificate and verification proving and recording method, applied to a block chain node of a distributed point-to-point management network, where the point-to-point management network includes a plurality of data value certificate and verified certificate generation nodes and the block chain node connected to the plurality of data value certificate and verified certificate generation nodes in a many-to-one communication manner, the method including:
receiving a data value certificate and a verification certificate sent by the data value certificate and verified certificate generation node, wherein the data value certificate and the verification certificate are generated by the data value certificate and verified certificate generation node aiming at original data of a data value to be verified based on a trust probe type and a trust probe quantity distributed by the block chain nodes, the trust probe type is generated by the block chain nodes according to a head node type of the data value certificate and verified certificate generation node, the trust probe quantity is determined by the block chain nodes according to the generation quantity of historical data value certificates of the data value certificate and verified certificate generation node, and the numerical value of the trust probe quantity is positively correlated with the generation quantity of the historical data value certificates;
extracting independent verification identifications and value proof identifications in the data value certificates and the verification certificates, wherein the independent verification identifications are generated by the data value certificates and the verified certificate generation nodes according to the density of the data value of the original data and the relative density of the trust probe, and the value proof identifications are generated by the data value certificates and the verified certificate generation nodes according to the ratio of the type of the original data to the type of the trust probe;
aiming at the data value voucher and the verification certificate, obtaining a first hash value of a block chain link point aiming at the data value voucher and the verification certificate according to the block chain node and the independent verification identifier, and obtaining a second hash value aiming at the data value voucher and the verification certificate according to the trust probe type and a neighbor block chain node connected with the block chain link point;
for the data value voucher and the verification certificate, constructing a vector matrix by taking a first hash value corresponding to the data value voucher and the verification certificate as a row vector and taking a second hash value of the arbitration node for the data value voucher and the verification certificate as a transposed vector, and inquiring whether a recording path which is the same as the vector matrix exists in a voucher recording table or not by taking the independent verification identifier and the vector matrix as recording paths, wherein a recording structure of the voucher recording table comprises an independent verification identifier recording unit and a vector matrix recording unit;
and under the condition that the same recording path exists in the certificate recording table, acquiring an address and a port key of the recording path, and recording the data value certificate, the verification certificate and the vector matrix by taking the independent verification identifier as a starting point and the sum of the first hash value and the second hash value as an end point under the recording path based on the address and the port key of the recording path.
Further, the obtaining a first hash value of the blockchain node for the data value certificate and the verification certificate according to the blockchain node and the independent verification identifier includes:
and performing Hash operation according to the density of the data value in the independent verification identification of the blockchain node and the relative density of the trust probe to obtain a first Hash value of the blockchain node aiming at the data value certificate and the verification certificate.
Further, the obtaining a second hash value for the data value credential and the verification certificate according to the trust probe type and a neighbor blockchain node connected to the blockchain node comprises:
according to the type of the trust probe, traversing and determining the step length of the neighbor block chain link point aiming at the value certification mark from the neighbor block chain node connected with the block chain link point;
taking the neighbor block chain node with the largest step length as an arbitration node of the current data value certificate and verification record;
and performing hash operation according to the relative density of the data value of the original data by the arbitration node based on a Mercker tree algorithm to obtain a second hash value of the arbitration node for the data value voucher and the verification certificate.
Further, the trust probe type is generated by:
each block chain node generates a head node type of the node according to each data value certificate and verified certificate which are in communication connection with the block chain node, and the head nodes are clustered according to a preset data type in the block chain node to obtain a plurality of node cluster clouds;
determining a node cluster cloud center and a node cluster cloud center corresponding to each node cluster cloud, calculating an offset value of the node cluster cloud according to the node cluster cloud center and the node cluster cloud center, and broadcasting the offset value obtained by self calculation to block chain link points;
the block chain link point receives a target offset value which is broadcasted by other block chain link points and comprises the head node type calculation, wherein the other block chain nodes are the block chain link points of the head node type of the certificate generation node which acquires the data value voucher and the verification;
and searching the trust probe type from the preset data type by the block link point according to the product of the deviation value and the received target deviation value, wherein the preset data type and the trust probe type are established with a corresponding relation.
Further, the certification and recording method for data value voucher and verification based on block chain further comprises the following steps:
under the condition that the same recording path does not exist in the certificate recording table, whether an independent verification identifier which is the same as the independent verification identifiers of the data value certificate and the verification certificate exists in the certificate recording table or not is searched;
under the condition that a first independent verification identifier which is the same as the independent verification identifiers of the data value voucher and the verification certificate exists in the voucher record table, determining a vector matrix corresponding to the first independent verification identifier as a first vector matrix;
calculating the similarity between every two column vectors with the same column number in the first vector matrix according to each element in the vector matrix;
and under the condition that the similarity exceeds a preset threshold value, acquiring an address and a port key of a first recording path corresponding to the first vector matrix, and recording the data value voucher, the verification certificate and the vector matrix by taking the independent verification identifier as a starting point and the sum of the first hash value and the second hash value as an end point under the first recording path based on the address and the port key of the first recording path.
Further, the certification and recording method for data value voucher and verification based on block chain further comprises the following steps:
under the condition that a first independent verification identifier which is the same as the independent verification identifiers of the data value voucher and the verification certificate does not exist in the voucher record table, or under the condition that the similarity does not exceed a preset threshold value, a second record path is created by taking the independent verification identifier as an address of a record path and the vector matrix as a port key of the record path;
and recording the data value voucher, the verification certificate and the vector matrix by taking the independent verification identifier as a starting point and the sum of the first hash value and the second hash value as an end point under the second recording path.
A second aspect of the present disclosure provides a block chain-based data value credential and verification certification and recording apparatus applied to a block chain node point of a distributed point-to-point management network, where the point-to-point management network includes a plurality of data value credential and verified certificate generation nodes and the block chain node connected to the plurality of data value credential and verified certificate generation nodes in a many-to-one communication manner, the apparatus including:
a receiving module configured to receive the data value voucher and the certificate of authenticity sent by the certificate generation node of the data value voucher and the certificate of authenticity, wherein the data value voucher and the verification certificate are generated by the data value voucher and the verified certificate generating nodes aiming at the original data of the data value to be verified based on the trust probe type and the trust probe quantity distributed by the block chain nodes, wherein the trust probe type is generated by the blockchain node from the data value credential and a head node type of a verified certificate generating node, the number of trust probes is determined by the block chain node according to the generation number of the historical data value voucher of the data value voucher and the verified certificate generation node, wherein the numerical value of the number of trust probes is positively correlated with the generated number of the historical data value vouchers;
an extraction module configured to extract an independent validation identity and a value proof identity in the data value credential and validation certificate, wherein the independent validation identity is generated by the data value credential and validated certificate generation node from a density of data values of the raw data and a relative density of the trust probe, and the value proof identity is generated by the data value credential and validated certificate generation node from a ratio of a type of the raw data and a type of the trust probe;
a computing module configured to obtain, for the data value credential and the verification certificate, a first hash value of a block chain node for the data value credential and the verification certificate according to the block chain node and the independent verification identifier, and obtain a second hash value for the data value credential and the verification certificate according to the trust probe type and a neighboring block chain node connected to the block chain node;
the query module is configured to construct a vector matrix by taking a first hash value corresponding to the data value voucher and the verification certificate as a row vector and the second hash value of the arbitration node for the data value voucher and the verification certificate as a transposed vector for the data value voucher and the verification certificate, and query whether a recording path which is the same as the vector matrix exists in a voucher recording table or not by taking the independent verification identifier and the vector matrix as recording paths, wherein a recording structure of the voucher recording table comprises an independent verification identifier recording unit and a vector matrix recording unit;
the first recording module is configured to acquire an address and a port key of the recording path under the condition that the same recording path exists in the credential recording table, and record the data value credential, the authentication certificate and the vector matrix with the independent authentication identifier as a starting point and the sum of the first hash value and the second hash value as an end point under the recording path based on the address and the port key of the recording path.
Further, the calculation module is configured to perform a hash operation according to the density of the data value in the independent verification identification of the blockchain node and the relative density of the trust probe to obtain a first hash value of the blockchain node for the data value certificate and the verification certificate.
Further, the calculation module includes:
a traversal submodule configured to traverse, according to the type of the trust probe, a step size of the neighbor block chain link point for the value proof identification from a neighbor block chain node connected to the block chain link point;
the determining submodule is configured to take the neighbor block chain node with the largest step size as an arbitration node of the current data value certificate and the verification record;
and the execution submodule is configured to perform hash operation according to the relative density of the data value of the original data based on a Mercker tree algorithm through the arbitration node to obtain a second hash value of the arbitration node for the data value certificate and the verification certificate.
Further, the trust probe type is generated by:
each block chain node generates a head node type of the node according to each data value certificate and verified certificate which are in communication connection with the block chain node, and the head nodes are clustered according to a preset data type in the block chain node to obtain a plurality of node cluster clouds;
determining a node cluster cloud center and a node cluster cloud center corresponding to each node cluster cloud, calculating an offset value of the node cluster cloud according to the node cluster cloud center and the node cluster cloud center, and broadcasting the offset value obtained by self calculation to block chain link points;
the block chain link point receives a target offset value which is broadcasted by other block chain link points and comprises the head node type calculation, wherein the other block chain nodes are the block chain link points of the head node type of the certificate generation node which acquires the data value voucher and the verification;
and searching the trust probe type from the preset data type by the block link point according to the product of the deviation value and the received target deviation value, wherein the preset data type and the trust probe type are established with a corresponding relation.
Further, the block chain-based proof and record device for data value certificate and verification further comprises: a second recording module configured to:
under the condition that the same recording path does not exist in the certificate recording table, whether an independent verification identifier which is the same as the independent verification identifiers of the data value certificate and the verification certificate exists in the certificate recording table or not is searched;
under the condition that a first independent verification identifier which is the same as the independent verification identifiers of the data value voucher and the verification certificate exists in the voucher record table, determining a vector matrix corresponding to the first independent verification identifier as a first vector matrix;
calculating the similarity between every two column vectors with the same column number in the first vector matrix according to each element in the vector matrix;
and under the condition that the similarity exceeds a preset threshold value, acquiring an address and a port key of a first recording path corresponding to the first vector matrix, and recording the data value voucher, the verification certificate and the vector matrix by taking the independent verification identifier as a starting point and the sum of the first hash value and the second hash value as an end point under the first recording path based on the address and the port key of the first recording path.
Further, the second recording module is further configured to:
under the condition that a first independent verification identifier which is the same as the independent verification identifiers of the data value voucher and the verification certificate does not exist in the voucher record table, or under the condition that the similarity does not exceed a preset threshold value, a second record path is created by taking the independent verification identifier as an address of a record path and the vector matrix as a port key of the record path;
and recording the data value voucher, the verification certificate and the vector matrix by taking the independent verification identifier as a starting point and the sum of the first hash value and the second hash value as an end point under the second recording path.
The present disclosure can achieve at least the following advantageous effects:
the data value voucher and the verified certificate generating node generate the data value voucher and the verified certificate based on the trust probe types and the trust probe quantity distributed by the block chain nodes, a first hash value of the block chain node and a second hash value of the arbitration node are further determined according to independent verification marks and value proof marks in the data value voucher and the verified certificate, a vector matrix is constructed, the data value voucher and the verified certificate are proved and recorded under various conditions by taking the independent verification marks and the vector matrix as recording paths, the safety of the proving and recording of the data value voucher and the verification is improved, and the accuracy of the proving and recording of the data value voucher and the verification is enhanced.
And node verification is realized based on the digital certificate, and the authenticity and credibility of data are ensured through asymmetric encryption. The complete record of the data authenticity is realized by utilizing the multi-node verification of the block chain, so that the data value certificate and verification proof is realized by having the correction capability of resisting the modification of any node and information pollution.
Drawings
FIG. 1 is a flow diagram of a block chain based attestation and recordation method of data value vouchers and verifications in one embodiment of the present disclosure;
FIG. 2 is a flowchart illustrating an implementation of step S13 in FIG. 1 according to an embodiment of the disclosure;
FIG. 3 is a flow chart of a method for generating a trust probe type in an embodiment of the present disclosure;
FIG. 4 is a flow diagram of a block chain based attestation and recordation method of data value vouchers and verifications in one embodiment of the present disclosure;
FIG. 5 is a block diagram of an attestation and recordation facility for proof and verification of data value based on blockchain in one embodiment of the invention.
The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
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 block chain-based data value voucher and verification certification and recording method in this embodiment is applied to a block chain link point of a distributed point-to-point management network, where the point-to-point management network includes a plurality of data value voucher and verification certificate generation nodes and the block chain node in many-to-one communication connection with the plurality of data value voucher and verification certificate generation nodes.
Fig. 1 is a flow chart of a certification and recording method of block chain based data value voucher and authentication in an embodiment of the present disclosure, as shown in fig. 1, the method includes the following steps:
in step S11, the data value voucher and the certificate of authenticity sent by the data value voucher and the authenticated certificate generating node are received.
The data value voucher and the verification certificate are generated by the data value voucher and the verified certificate generating nodes aiming at original data of the data value to be verified based on the trust probe types and the trust probe quantity distributed by the block chain nodes.
The trust probe type is generated by the block chain node according to the head node type of the data value voucher and the verified certificate generation node, the number of the trust probes is determined by the block chain node according to the generation number of the historical data value voucher of the data value voucher and the verified certificate generation node, and the numerical value of the number of the trust probes is positively correlated with the generation number of the historical data value voucher.
In step S12, the independent authentication identity and value proof identity in the data value voucher and certificate of authenticity are extracted.
Wherein the independent verification identification is generated by the data value voucher and the verified certificate generation node according to the density of the data value of the original data and the relative density of the trust probe, and the value proof identification is generated by the data value voucher and the verified certificate generation node according to the ratio of the type of the original data to the type of the trust probe.
In step S13, for the data value voucher and the authentication certificate, a first hash value of a block chain node for the data value voucher and the authentication certificate is obtained according to the block chain node and the independent authentication identifier, and a second hash value for the data value voucher and the authentication certificate is obtained according to the trust probe type and a neighboring block chain node connected to the block chain node.
In step S14, for the data value voucher and the certificate of authenticity, a vector matrix is constructed with a first hash value corresponding to the data value voucher and the certificate of authenticity as a row vector and the second hash value of the arbitration node for the data value voucher and the certificate of authenticity as a transposed vector, and with the independent authentication identifier and the vector matrix as recording paths, it is queried whether a recording path identical to the vector matrix exists in a voucher recording table.
The recording structure of the certificate recording table comprises an independent verification identification recording unit and a vector matrix recording unit;
in step S15, when the same record path exists in the credential record table, the address and the port key of the record path are obtained, and based on the address and the port key of the record path, the data value credential, the authentication certificate, and the vector matrix are recorded with the independent authentication identifier as a starting point and the sum of the first hash value and the second hash value as an end point under the record path.
By adopting the technical scheme, the data value voucher and the verified certificate generation node generate the data value voucher and the verified certificate based on the trust probe types and the trust probe quantity distributed by the block chain nodes, further determine the first hash value of the block chain nodes and the second hash value of the arbitration node according to the independent verification identification and the value proof identification in the data value voucher and the verified certificate, construct a vector matrix, and prove and record the data value voucher and the verified certificate under various conditions by taking the independent verification identification and the vector matrix as recording paths, so that the safety of the proof and the record of the data value voucher and the verification is improved, and the accuracy of the proof and the record of the data value voucher and the verification is enhanced.
Further, in step S13, the obtaining a first hash value of the blockchain node for the data value certificate and the verification certificate according to the blockchain node and the independent verification identifier includes:
and performing Hash operation according to the density of the data value in the independent verification identification of the blockchain node and the relative density of the trust probe to obtain a first Hash value of the blockchain node aiming at the data value certificate and the verification certificate.
Further, fig. 2 is a flowchart for implementing step S13 in fig. 1 in an embodiment of the present disclosure, and in step S13, the obtaining a second hash value for the data value certificate and the certificate of authenticity according to the trust probe type and the neighbor blockchain node connected to the blockchain node includes the following steps:
in step S131, according to the type of the trust probe, determining a step length of the neighbor block chain node for the value proof identifier from the neighbor block chain node connected to the block chain node in a traversal manner;
in step S132, the neighbor block chain node with the largest step size is used as an arbitration node for the current data value certificate and the verification record;
in step S133, based on the merkel tree algorithm, the arbitration node performs hash operation according to the relative density of the data value of the raw data to obtain a second hash value of the arbitration node for the data value credential and the verification certificate.
Further, fig. 3 is a flowchart of a method for generating a trust probe type in an embodiment of the present disclosure, which specifically includes the following steps:
in step S31, each block link node generates a head node type of a node according to each data value voucher and verified certificate which are in communication connection with the block link node, and clusters the head node according to a preset data type in the block link node to obtain a plurality of node cluster clouds;
in step S32, determining a node cluster cloud center and a node cluster cloud center corresponding to each node cluster cloud, calculating an offset value of the node cluster cloud according to the node cluster cloud center and the node cluster cloud center, and broadcasting the offset value calculated by the node cluster cloud center to a block link point;
in step S33, the tile link point receives the target offset values broadcast by other tile link points including the head node type calculation.
The other block chain nodes are block chain link points of the head node types of the obtained data value certificates and verified certificate generation nodes;
in step S34, the block link point searches for the type of the trust probe from the preset data types according to a product of the offset value and the received target offset value, where the preset data types and the trust probe types have a corresponding relationship.
Further, fig. 4 is a flowchart of a certification and recording method for a blockchain-based data value certificate and verification in an embodiment of the present disclosure, as shown in fig. 4, on the basis of fig. 1, the certification and recording method for a blockchain-based data value certificate and verification further includes the following steps:
in step S41, in a case that the same record path does not exist in the credential record table, searching whether an independent authentication identifier identical to the independent authentication identifiers of the data value credential and the authentication certificate exists in the credential record table;
in step S42, in a case that a first independent verification identifier identical to the independent verification identifiers of the data value certificate and the certificate of authenticity exists in the certificate record table, determining that a vector matrix corresponding to the first independent verification identifier is a first vector matrix;
in step S43, calculating a similarity between every two column vectors with the same column number in the first vector matrix according to each element in the vector matrix;
in step S44, when the similarity exceeds a preset threshold, an address and a port key of a first recording path corresponding to the first vector matrix are obtained, and based on the address and the port key of the first recording path, the data value credential, the certificate of authenticity, and the vector matrix are recorded with the independent authentication identifier as a starting point and a sum of the first hash value and the second hash value as an end point in the first recording path.
Further, on the basis of fig. 2, the block chain-based data value certificate and verification proving and recording method further comprises the following steps:
under the condition that a first independent verification identifier which is the same as the independent verification identifiers of the data value voucher and the verification certificate does not exist in the voucher record table, or under the condition that the similarity does not exceed a preset threshold value, a second record path is created by taking the independent verification identifier as an address of a record path and the vector matrix as a port key of the record path;
and recording the data value voucher, the verification certificate and the vector matrix by taking the independent verification identifier as a starting point and the sum of the first hash value and the second hash value as an end point under the second recording path.
And node verification is realized based on the digital certificate, and the authenticity and credibility of data are ensured through asymmetric encryption. The complete record of the data authenticity is realized by utilizing the multi-node verification of the block chain, so that the data value certificate and verification proof is realized by having the correction capability of resisting the modification of any node and information pollution.
The embodiment of the disclosure further provides a device for proving and recording data value vouchers and verifications based on a block chain, which is applied to block chain link points of a distributed point-to-point management network, wherein the point-to-point management network comprises a plurality of data value vouchers and verified certificate generating nodes and the block chain nodes which are in many-to-one communication connection with the plurality of data value vouchers and verified certificate generating nodes.
Fig. 5 is a block diagram of an apparatus for certification and recording of data value vouchers and verifications based on blockchains according to an embodiment of the present invention, as shown in fig. 5, the apparatus 500 includes:
a receiving module 510 configured to receive the data value voucher and the certificate of authenticity sent by the data value voucher and verified certificate generating node, wherein the data value voucher and the verification certificate are generated by the data value voucher and the verified certificate generating nodes aiming at the original data of the data value to be verified based on the trust probe type and the trust probe quantity distributed by the block chain nodes, wherein the trust probe type is generated by the blockchain node from the data value credential and a head node type of a verified certificate generating node, the number of trust probes is determined by the block chain node according to the generation number of the historical data value voucher of the data value voucher and the verified certificate generation node, wherein the numerical value of the number of trust probes is positively correlated with the generated number of the historical data value vouchers;
an extraction module 520 configured to extract an independent verification identity and a value proof identity in the data value credential and the verification certificate, wherein the independent verification identity is generated by the data value credential and the verified certificate generation node according to the density of the data value of the original data and the relative density of the trust probe, and the value proof identity is generated by the data value credential and the verified certificate generation node according to the ratio of the type of the original data and the type of the trust probe;
a computing module 530 configured to obtain, for the data value credential and the verification certificate, a first hash value of a blockchain node for the data value credential and the verification certificate according to the blockchain node and the independent verification identifier, and obtain a second hash value for the data value credential and the verification certificate according to the trust probe type and a neighboring blockchain node connected to the blockchain node;
the querying module 540 is configured to, for the data value credential and the verification certificate, construct a vector matrix with a first hash value corresponding to the data value credential and the verification certificate as a row vector and a second hash value of the arbitration node for the data value credential and the verification certificate as a transposed vector, and query whether a recording path identical to the vector matrix exists in a credential recording table with the independent verification identifier and the vector matrix as recording paths, where a recording structure of the credential recording table includes an independent verification identifier recording unit and a vector matrix recording unit;
a first recording module 550, configured to, if the same recording path exists in the credential recording table, obtain an address and a port key of the recording path, and record the data value credential, the authentication certificate, and the vector matrix with the independent authentication identifier as a starting point and a sum of the first hash value and the second hash value as an end point in the recording path based on the address and the port key of the recording path.
According to the device, the data value voucher and the verified certificate are generated through the data value voucher and the verified certificate generation node based on the trust probe types and the trust probe quantity distributed by the block chain nodes, the first hash value of the block chain node and the second hash value of the arbitration node are determined according to the independent verification identification and the value proof identification in the data value voucher and the verified certificate, the vector matrix is constructed, the data value voucher and the verified certificate are proved and recorded under various conditions by taking the independent verification identification and the vector matrix as recording paths, the safety of the proving and recording of the data value voucher and the verification is improved, and the accuracy of the proving and recording of the data value voucher and the verification is enhanced.
Further, the calculation module is configured to perform a hash operation according to the density of the data value in the independent verification identification of the blockchain node and the relative density of the trust probe to obtain a first hash value of the blockchain node for the data value certificate and the verification certificate.
Further, the calculation module includes:
a traversal submodule configured to traverse, according to the type of the trust probe, a step size of the neighbor block chain link point for the value proof identification from a neighbor block chain node connected to the block chain link point;
the determining submodule is configured to take the neighbor block chain node with the largest step size as an arbitration node of the current data value certificate and the verification record;
and the execution submodule is configured to perform hash operation according to the relative density of the data value of the original data based on a Mercker tree algorithm through the arbitration node to obtain a second hash value of the arbitration node for the data value certificate and the verification certificate.
Further, the trust probe type is generated by:
each block chain node generates a head node type of the node according to each data value certificate and verified certificate which are in communication connection with the block chain node, and the head nodes are clustered according to a preset data type in the block chain node to obtain a plurality of node cluster clouds;
determining a node cluster cloud center and a node cluster cloud center corresponding to each node cluster cloud, calculating an offset value of the node cluster cloud according to the node cluster cloud center and the node cluster cloud center, and broadcasting the offset value obtained by self calculation to block chain link points;
the block chain link point receives a target offset value which is broadcasted by other block chain link points and comprises the head node type calculation, wherein the other block chain nodes are the block chain link points of the head node type of the certificate generation node which acquires the data value voucher and the verification;
and searching the trust probe type from the preset data type by the block link point according to the product of the deviation value and the received target deviation value, wherein the preset data type and the trust probe type are established with a corresponding relation.
Further, the block chain-based proof and record device for data value certificate and verification further comprises: a second recording module configured to:
under the condition that the same recording path does not exist in the certificate recording table, whether an independent verification identifier which is the same as the independent verification identifiers of the data value certificate and the verification certificate exists in the certificate recording table or not is searched;
under the condition that a first independent verification identifier which is the same as the independent verification identifiers of the data value voucher and the verification certificate exists in the voucher record table, determining a vector matrix corresponding to the first independent verification identifier as a first vector matrix;
calculating the similarity between every two column vectors with the same column number in the first vector matrix according to each element in the vector matrix;
and under the condition that the similarity exceeds a preset threshold value, acquiring an address and a port key of a first recording path corresponding to the first vector matrix, and recording the data value voucher, the verification certificate and the vector matrix by taking the independent verification identifier as a starting point and the sum of the first hash value and the second hash value as an end point under the first recording path based on the address and the port key of the first recording path.
Further, the second recording module is further configured to:
under the condition that a first independent verification identifier which is the same as the independent verification identifiers of the data value voucher and the verification certificate does not exist in the voucher record table, or under the condition that the similarity does not exceed a preset threshold value, a second record path is created by taking the independent verification identifier as an address of a record path and the vector matrix as a port key of the record path;
and recording the data value voucher, the verification certificate and the vector matrix by taking the independent verification identifier as a starting point and the sum of the first hash value and the second hash value as an end point under the second recording path.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, apparatus, article, or method. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, apparatus, article, or method that includes the element.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A blockchain-based proof and recording method of data value vouchers and verifications applied to blockchain nodes of a distributed point-to-point management network including a plurality of data value voucher and verified certificate generation nodes and the blockchain nodes connected in many-to-one communication with the plurality of data value voucher and verified certificate generation nodes, the method comprising:
receiving a data value certificate and a verification certificate sent by the data value certificate and verified certificate generation node, wherein the data value certificate and the verification certificate are generated by the data value certificate and verified certificate generation node aiming at original data of a data value to be verified based on a trust probe type and a trust probe quantity distributed by the block chain nodes, the trust probe type is generated by the block chain nodes according to a head node type of the data value certificate and verified certificate generation node, the trust probe quantity is determined by the block chain nodes according to the generation quantity of historical data value certificates of the data value certificate and verified certificate generation node, and the numerical value of the trust probe quantity is positively correlated with the generation quantity of the historical data value certificates;
extracting independent verification identifications and value proof identifications in the data value certificates and the verification certificates, wherein the independent verification identifications are generated by the data value certificates and the verified certificate generation nodes according to the density of the data value of the original data and the relative density of the trust probe, and the value proof identifications are generated by the data value certificates and the verified certificate generation nodes according to the ratio of the type of the original data to the type of the trust probe;
aiming at the data value voucher and the verification certificate, obtaining a first hash value of a block chain link point aiming at the data value voucher and the verification certificate according to the block chain node and the independent verification identifier, and obtaining a second hash value aiming at the data value voucher and the verification certificate according to the trust probe type and a neighbor block chain node connected with the block chain link point;
for the data value voucher and the verification certificate, constructing a vector matrix by taking a first hash value corresponding to the data value voucher and the verification certificate as a row vector and taking a second hash value of the arbitration node for the data value voucher and the verification certificate as a transposed vector, and inquiring whether a recording path which is the same as the vector matrix exists in a voucher recording table or not by taking the independent verification identifier and the vector matrix as recording paths, wherein a recording structure of the voucher recording table comprises an independent verification identifier recording unit and a vector matrix recording unit;
and under the condition that the same recording path exists in the certificate recording table, acquiring an address and a port key of the recording path, and recording the data value certificate, the verification certificate and the vector matrix by taking the independent verification identifier as a starting point and the sum of the first hash value and the second hash value as an end point under the recording path based on the address and the port key of the recording path.
2. The attestation and recording method according to claim 1, wherein said deriving a first hash value of a blockchain node for the data value credential and the certificate of authenticity from the blockchain node and the independent authentication identity comprises:
and performing Hash operation according to the density of the data value in the independent verification identification of the blockchain node and the relative density of the trust probe to obtain a first Hash value of the blockchain node aiming at the data value certificate and the verification certificate.
3. The attestation and recording method of claim 1, wherein said deriving a second hash value for the data value credential and the validation certificate from the trust probe type and a neighbor blockchain node connected to the blockchain node comprises:
according to the type of the trust probe, traversing and determining the step length of the neighbor block chain link point aiming at the value certification mark from the neighbor block chain node connected with the block chain link point;
taking the neighbor block chain node with the largest step length as an arbitration node of the current data value certificate and verification record;
and performing hash operation according to the relative density of the data value of the original data by the arbitration node based on a Mercker tree algorithm to obtain a second hash value of the arbitration node for the data value voucher and the verification certificate.
4. The attestation and recording method of claim 1, wherein the trust probe type is generated by:
each block chain node generates a head node type of the node according to each data value certificate and verified certificate which are in communication connection with the block chain node, and the head nodes are clustered according to a preset data type in the block chain node to obtain a plurality of node cluster clouds;
determining a node cluster cloud center and a node cluster cloud center corresponding to each node cluster cloud, calculating an offset value of the node cluster cloud according to the node cluster cloud center and the node cluster cloud center, and broadcasting the offset value obtained by self calculation to block chain link points;
the block chain link point receives a target offset value which is broadcasted by other block chain link points and comprises the head node type calculation, wherein the other block chain nodes are the block chain link points of the head node type of the certificate generation node which acquires the data value voucher and the verification;
and searching the trust probe type from the preset data type by the block link point according to the product of the deviation value and the received target deviation value, wherein the preset data type and the trust probe type are established with a corresponding relation.
5. The certification and recording method according to any one of claims 1 to 4, wherein the method further comprises:
under the condition that the same recording path does not exist in the certificate recording table, whether an independent verification identifier which is the same as the independent verification identifiers of the data value certificate and the verification certificate exists in the certificate recording table or not is searched;
under the condition that a first independent verification identifier which is the same as the independent verification identifiers of the data value voucher and the verification certificate exists in the voucher record table, determining a vector matrix corresponding to the first independent verification identifier as a first vector matrix;
calculating the similarity between every two column vectors with the same column number in the first vector matrix according to each element in the vector matrix;
and under the condition that the similarity exceeds a preset threshold value, acquiring an address and a port key of a first recording path corresponding to the first vector matrix, and recording the data value voucher, the verification certificate and the vector matrix by taking the independent verification identifier as a starting point and the sum of the first hash value and the second hash value as an end point under the first recording path based on the address and the port key of the first recording path.
6. The certification and recording method according to claim 5, wherein the method further comprises:
under the condition that a first independent verification identifier which is the same as the independent verification identifiers of the data value voucher and the verification certificate does not exist in the voucher record table, or under the condition that the similarity does not exceed a preset threshold value, a second record path is created by taking the independent verification identifier as an address of a record path and the vector matrix as a port key of the record path;
and recording the data value voucher, the verification certificate and the vector matrix by taking the independent verification identifier as a starting point and the sum of the first hash value and the second hash value as an end point under the second recording path.
7. An apparatus for blockchain-based attestation and recordation of data value vouchers and verifications for use with blockchain linked points of a distributed point-to-point management network including a plurality of data value voucher and verified certificate generation nodes and the blockchain nodes in a many-to-one communication connection with the plurality of data value voucher and verified certificate generation nodes, the apparatus comprising:
a receiving module configured to receive the data value voucher and the certificate of authenticity sent by the certificate generation node of the data value voucher and the certificate of authenticity, wherein the data value voucher and the verification certificate are generated by the data value voucher and the verified certificate generating nodes aiming at the original data of the data value to be verified based on the trust probe type and the trust probe quantity distributed by the block chain nodes, wherein the trust probe type is generated by the blockchain node from the data value credential and a head node type of a verified certificate generating node, the number of trust probes is determined by the block chain node according to the generation number of the historical data value voucher of the data value voucher and the verified certificate generation node, wherein the numerical value of the number of trust probes is positively correlated with the generated number of the historical data value vouchers;
an extraction module configured to extract an independent validation identity and a value proof identity in the data value credential and validation certificate, wherein the independent validation identity is generated by the data value credential and validated certificate generation node from a density of data values of the raw data and a relative density of the trust probe, and the value proof identity is generated by the data value credential and validated certificate generation node from a ratio of a type of the raw data and a type of the trust probe;
a computing module configured to obtain, for the data value credential and the verification certificate, a first hash value of a block chain node for the data value credential and the verification certificate according to the block chain node and the independent verification identifier, and obtain a second hash value for the data value credential and the verification certificate according to the trust probe type and a neighboring block chain node connected to the block chain node;
the query module is configured to construct a vector matrix by taking a first hash value corresponding to the data value voucher and the verification certificate as a row vector and the second hash value of the arbitration node for the data value voucher and the verification certificate as a transposed vector for the data value voucher and the verification certificate, and query whether a recording path which is the same as the vector matrix exists in a voucher recording table or not by taking the independent verification identifier and the vector matrix as recording paths, wherein a recording structure of the voucher recording table comprises an independent verification identifier recording unit and a vector matrix recording unit;
the first recording module is configured to acquire an address and a port key of the recording path under the condition that the same recording path exists in the credential recording table, and record the data value credential, the authentication certificate and the vector matrix with the independent authentication identifier as a starting point and the sum of the first hash value and the second hash value as an end point under the recording path based on the address and the port key of the recording path.
8. The attestation and recording device of claim 7, wherein the computing module is configured to perform a hash operation on a density of data values in the independent verification identifications of the blockchain nodes and a relative density of the trust probe to obtain a first hash value of the blockchain node for the data value credential and the verification certificate.
9. The attestation and recording method of claim 7, wherein the computing module comprises:
a traversal submodule configured to traverse, according to the type of the trust probe, a step size of the neighbor block chain link point for the value proof identification from a neighbor block chain node connected to the block chain link point;
the determining submodule is configured to take the neighbor block chain node with the largest step size as an arbitration node of the current data value certificate and the verification record;
and the execution submodule is configured to perform hash operation according to the relative density of the data value of the original data based on a Mercker tree algorithm through the arbitration node to obtain a second hash value of the arbitration node for the data value certificate and the verification certificate.
10. The attestation and recording device of claim 7, wherein the trust probe type is generated by:
each block chain node generates a head node type of the node according to each data value certificate and verified certificate which are in communication connection with the block chain node, and the head nodes are clustered according to a preset data type in the block chain node to obtain a plurality of node cluster clouds;
determining a node cluster cloud center and a node cluster cloud center corresponding to each node cluster cloud, calculating an offset value of the node cluster cloud according to the node cluster cloud center and the node cluster cloud center, and broadcasting the offset value obtained by self calculation to block chain link points;
the block chain link point receives a target offset value which is broadcasted by other block chain link points and comprises the head node type calculation, wherein the other block chain nodes are the block chain link points of the head node type of the certificate generation node which acquires the data value voucher and the verification;
and searching the trust probe type from the preset data type by the block link point according to the product of the deviation value and the received target deviation value, wherein the preset data type and the trust probe type are established with a corresponding relation.
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