CN108984768B - Distributed chained data resource catalog and index management method - Google Patents
Distributed chained data resource catalog and index management method Download PDFInfo
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Abstract
The invention relates to a distribution chain type data resource catalog and index management method, which comprises the following steps: 1) releasing the catalog; 2) indexing to be online; 3) positioning resources; 4) indexing a lower line; 5) directory revocation. The scheme has high reliability, and all nodes maintain the whole system and data together by adopting a decentralized mechanism, so that the fault tolerance and the reliability are very strong; the high credibility, the block chain multi-center mechanism, the cryptology principle and the full distributed storage of data ensure that the data on the chain cannot be tampered.
Description
Technical Field
The invention relates to a management method, in particular to a distribution chain type data resource catalog and index management method, and belongs to the technical field of data resource management.
Background
With the rapid development of big data, cloud computing and the Internet of things, data is an asset with strategic significance to governments and society. Data resources usually have the characteristics of large quantity, wide categories, scattered distribution and the like, in order to fully exert the value of data, a data resource directory system needs to be constructed, a set of complete and reliable 'information resource map' is provided, and a data consumer can conveniently, quickly, accurately and comprehensively know and master the basic situation of the information resources and find and position the required information resources. Therefore, how to manage data resources on the premise of guaranteeing information security becomes an urgent need for promoting information interconnection and data sharing.
In the prior art, a centralized management mode is mostly adopted for a data resource directory management system, that is, each data source collects data resource directory information onto a central directory server or a data sharing platform, and the central server or the sharing platform performs unified management on a data directory.
The existing method is adopted to aggregate data resources across hierarchies, networks and regions, and the following problems generally exist:
1) the centralized directory management mode is easy to have single point failure and poor in stability;
2) the centralized collection mode ensures that a data resource owner cannot independently collect the own data resource catalog and only depends on the central catalog server;
3) the traditional directory management mode can not realize the all-round tracking and tracing of the data resource directory collection process, so the authenticity and the integrity of the data are difficult to ensure;
4) the traditional directory management mode is difficult to realize the cross-level, cross-network and cross-department data resource discovery and positioning quickly; the current centralized directory management system has problems in the aspects of data credibility, comprehensive collection, quick retrieval, information leakage, system stability and the like; the data credibility problem is that the centralized system data is opaque, so that the risks of data forgery, data falsification and the like exist; the problem of information fragmentation is that a centralized system is difficult to comprehensively collect data of all data sources, and directory fragmentation, directory synchronization and directory large-scale cooperation are difficult; the information retrieval problem is that a centralized system is difficult to establish a hierarchical retrieval mechanism of mass information, and the system has performance bottleneck; the information leakage problem is solved, the centralized system is attacked, and potential safety hazards such as data malicious leakage exist; the system stability problem, if the centralized system is out of order or broken down, the service of the whole system is unavailable.
Based on the technical problem, a distributed, hierarchical and block chained data resource directory and index management method is provided to realize resource description and quick positioning.
Disclosure of Invention
The invention provides a distributed chain type data resource catalog and index management method aiming at the technical problems in the prior art, the data resource catalog and index management system in the technical scheme is jointly established and maintained by data resource nodes through a block chain technology, the whole system forms a block chain network, the block chain network is composed of different types of nodes and different types of block chains, and different nodes play different roles in the block chain.
In order to achieve the purpose, the technical scheme of the invention is as follows: a method for managing a distributed chained data resource directory and index, the method comprising the steps of:
1) releasing the catalog;
2) indexing to be online;
3) positioning resources;
4) indexing a lower line;
5) directory revocation.
As one aspect of the present invention, the step 1) of catalog distribution specifically includes:
the information node providing the data resource can release the directory information of the data resource in the region;
an information node providing data resources generates a resource directory publishing information block and broadcasts and publishes the block to an information directory block chain network of the local area;
the resource directory publishing information block generated by the information node comprises an information type, a unique identity of the information node, directory information of the data resource, a directory ID (directory unique identifier), and a digital signature of the information node to the information by using a private key of the information node, wherein the identity of the node and the digital signature show the right of the information node to the data resource; wherein the information type is a directory issue;
after other nodes in the information directory block chain network receive the block, acquiring a digital certificate or a public key of the corresponding information node through the node identity, and verifying the validity of the digital signature of the block through the node public key;
after the digital signature passes the verification, other nodes in the information directory block chain network continue to verify the validity of the block;
after the block validity verification is passed, other nodes in the information directory block chain network receive the block, namely the nodes write the new block into the information directory block chain;
if any of the above authentication processes fail, the block will be discarded and the process will end.
As one aspect of the present invention, the step 2) indexes the upper line, specifically as follows:
when data circulation is needed, including data sharing, opening or transaction, the index node in the region can issue index information of data resources to the information index chain;
the index node issues index information, and index information of the data resource is constructed according to the unique node identifier provided by the data resource, the unique identifier of the data resource and the positioning information of the data resource;
the location information of the data resource includes a blockchain ID (blockchain unique identifier) and a directory ID (directory unique identifier) of the directory chain of information; the block chain ID uniquely identifies a block chain of a certain area, the directory ID uniquely identifies a certain data resource, and the block chain ID and the directory ID uniquely identify data resource information of the certain area;
generating a data resource index online information block by an index node of a region to which a data resource belongs, and broadcasting and issuing the block to an information index block chain network of the region;
the index online information block generated by the index node comprises an information type, a unique identity of the index node, a unique identity of a data resource providing node, positioning information of the data resource, an index ID (index unique identifier), and a digital signature of the index node on information by using a private key of the index node, wherein the information type is index online;
after other nodes in the information index block chain network receive the block, acquiring a digital certificate or a public key of the corresponding index node through the node identity, and verifying the validity of the digital signature of the block through the node public key;
after the digital signature passes the verification, other nodes in the information index block chain network continue to verify the validity of the block;
after the block validity verification is passed, other nodes in the information index block chain network receive the block, namely the nodes write the new block into the information index block chain;
if any of the above authentication processes fail, the block will be discarded and the process will end.
As one aspect of the present invention, the resource location in step 3) is specifically as follows, including 3.1 index lookup and 3.2 directory lookup.
As one of the means of the present invention, the step 3.1 of index searching specifically includes that the information resource positioning includes two processes of index searching and directory searching, the index searching is used for searching directory position information used for positioning the information resource, and the directory searching is used for positioning detailed information such as address, description and the like of the resource;
the query node firstly traverses the information index block chain according to the identity identification of the data resource providing node and the unique identification of the data resource, and searches a corresponding index information block;
when the searched block information type is the index on-line, setting the current block as the block; if the searched block information type is not the index on-line, setting the current block to be null;
if the current block is empty after the traversal block is linked, the index search fails, and the processing is finished, otherwise, the current block is the block to be searched;
and the query node acquires the information directory block chain ID and the directory ID information in the block from the searched current block.
As one aspect of the present invention, the step 3.2 of directory lookup specifically includes the following steps: the query node traverses an information directory chain corresponding to the block chain ID according to the acquired information directory block chain ID and directory ID information, and searches for a directory information block corresponding to the directory ID; and when the searched block information type is the catalog release, setting the current block as the block. If the searched block information type is not the catalog release, setting the current block to be empty; if the current block is empty after the traversal block is linked, the directory search fails, and the processing is finished, otherwise, the current block is the block to be searched; the query node acquires the data resource directory information in the block from the searched current block;
and the query node acquires detailed information such as resource description, download address and the like from the data resource directory information to complete the resource searching process.
As one aspect of the present invention, the step 4) is to index the offline, specifically as follows,
the index node of the area can revoke the index information of the data resource of the area;
index nodes in the data resource area generate an index offline information block, and the block is broadcasted and issued to the information index block chain network of the area;
the index offline information block generated by the index node comprises the information type, the unique identity of the index node, the positioning information of the data resource, the unique identity of the data resource providing node, the index ID (index unique identifier) and the digital signature of the index node on the information by using the private key of the index node. Wherein the information type is an index offline;
after other nodes in the information index block chain network receive the block, acquiring a digital certificate or a public key of the corresponding index node through the node identity, and verifying the validity of the digital signature of the block through the node public key;
after other nodes in the information index block chain network receive the block, searching an online block of the index information on the block chain through the node identity identification and the index unique identification;
if the search index is failed to find the line block, the node discards the block and finishes the processing;
if the line block on the index is searched successfully, other nodes in the information index block chain network continuously verify the validity of the block;
after the block validity verification is passed, other nodes in the information index block chain network receive the block, namely the nodes write the new block into the information index block chain;
if any of the above authentication processes fail, the block will be discarded and the process will end.
As one such aspect of the present invention, the step 5) of directory revocation may be specifically as follows,
the information node providing the data resource can revoke the directory information of the data resource in the region;
the information node of the data resource generates a resource directory revocation information block and broadcasts and issues the block to an information directory block chain network of the local area;
the resource directory revocation information block generated by the information node comprises the information type, the unique identity of the information node, directory information of the data resource, a directory ID (directory unique identifier), and a digital signature of the information by the information node with a private key of the information node. Wherein the information type is directory revocation;
after other nodes in the information directory block chain network receive the block, acquiring a digital certificate or a public key of the corresponding information node through the node identity, and verifying the validity of the digital signature of the block through the node public key;
after other nodes in the information directory block chain network receive the block, searching a release block of the directory information on the block chain through the node identity identification and the unique directory identification;
if the searching of the directory publishing block fails, the node discards the block and finishes the processing;
if the directory publishing block is searched successfully, other nodes in the information directory block chain network continue to verify the validity of the block;
after the block validity verification is passed, other nodes in the information directory block chain network receive the block, namely the nodes write the new block into the information directory block chain;
if any of the above authentication processes fail, the block will be discarded and the process will end.
Compared with the prior art, the invention has the following advantages: the scheme has high reliability, and all nodes maintain the whole system and data together by adopting a decentralized mechanism, so that the fault tolerance and the reliability are very strong; the high credibility, the block chain multi-center mechanism, the cryptology principle and the full distributed storage of data ensure that the data on the chain cannot be tampered. The credibility of the data source is grasped, so that the high credibility of the information in the system can be ensured; the data resource information can be traced, the transition of the data resource information in the whole life cycle is recorded on the block chain, and the life track can be traced; the method has high performance, the directory system of the data resources is respectively deployed in a two-stage block chain network, and a hierarchical retrieval mechanism is adopted to realize the rapid positioning and retrieval of the resources; through a method for constructing a data resource directory chain and an index chain, a complete resource set of 'information resource map' is formed in the forms of hierarchical and graded data resource directories and index differential chaining, so that the comprehensive description of data resources is realized; the method can ensure that the data resource catalog and the index are not tampered, and meanwhile, the data resource can be rapidly found and positioned.
Drawings
Fig. 1 is a schematic view of a resource positioning process.
Detailed Description
For the purposes of promoting an understanding and appreciation of the invention, reference will now be made to the following detailed description of the invention taken in conjunction with the accompanying drawings.
Example 1: referring to fig. 1, a method for managing a distributed chained data resource directory and index, the method comprising the steps of:
1) releasing the catalog;
2) indexing to be online;
3) positioning resources;
4) indexing a lower line;
5) directory revocation.
The scheme is a block chain technology based scheme, the block chain technology is also called distributed account book technology, and the block chain technology is an internet database technology and is characterized in that centralization and openness are achieved, and everyone can participate in database recording. The block chain combines the data blocks into a chain data structure in a time sequence connection mode, and the content of the chain data structure is guaranteed to be not falsifiable and counterfeitable through a cryptographic method.
The block chain is used as a multi-centralized distributed accounting technology, each node of the data storage can synchronously copy the whole data, and the block chain has the characteristics of mediation, transparent information and difficulty in tampering. The block chain is used as an infrastructure for common identification, common construction and sharing, is particularly suitable for constructing a data resource directory system with multi-party participation and full sharing, and ensures the credibility, safety and non-falsification of the resource directory of the whole network.
There are two types of blockchains in blockchain networks: there are two different types of nodes for the directory chain of information and the index chain of information: an information node and an index node.
The information directory chain is a regional block chain network, stores directory information of local region information resources, and is commonly maintained by all data resource information nodes in the local region. The information directory chain is similar to a city map and depicts the overall appearance of local information resources. The directory information in the information directory chain is formed by adopting and editing core metadata of data resources according to metadata standards and specifications of the country and the industry and cataloging metadata of the data resources according to resource classification or other modes.
The information index chain is a global block chain network, stores index information of data resources in all regions, and is commonly maintained by all data resource index nodes in each region. The information index chain is similar to a national map, and the panorama of the whole information resource is outlined. The index information in the information index chain is composed of the unique identification of the data resource and the resource positioning information, and each index node jointly stores the index information of the data resource in all the areas through the information index chain. The index node can quickly acquire the position information of the data resource by retrieving the information index chain, namely the directory information of the data resource is located on the information directory chain in the area. And then reading the directory information through the corresponding information directory chain, thereby acquiring detailed data resource information.
The information node is a data resource server of the region, stores the full data and the directory information of the region, and is responsible for issuing the directory information of the data resource to the information directory chain;
the index node is a data index server located in the local area, stores the index information of all area data by adding a global information index chain, and is responsible for issuing the index information of local area data resources to the information index chain;
when the directory information needs to be written into the information directory chain, the information node providing the data resource is responsible for writing the data;
when index information needs to be written into the information index chain, the index nodes in all the areas are responsible for writing data;
the information directory chain reading permission is opened for all nodes in the network, and all the nodes in the network have the permission to read the chain;
the information index chain reading permission is opened for all nodes in the network, and all the nodes in the network have the permission to read the chain.
In the scheme, the catalog release in the step 1) is as follows:
the information node providing the data resource can release the directory information of the data resource in the region;
an information node providing data resources generates a resource directory publishing information block and broadcasts and publishes the block to an information directory block chain network of the local area;
the resource directory publishing information block generated by the information node comprises an information type, a unique identity of the information node, directory information of the data resource, a directory ID (directory unique identifier), and a digital signature of the information node to the information by using a private key of the information node, wherein the identity of the node and the digital signature show the right of the information node to the data resource; wherein the information type is a directory issue;
after other nodes in the information directory block chain network receive the block, acquiring a digital certificate or a public key of the corresponding information node through the node identity, and verifying the validity of the digital signature of the block through the node public key;
after the digital signature passes the verification, other nodes in the information directory block chain network continue to verify the validity of the block;
after the block validity verification is passed, other nodes in the information directory block chain network receive the block, namely the nodes write the new block into the information directory block chain;
if any of the above authentication processes fail, the block will be discarded and the process will end.
The step 2) indexes to be online, and specifically comprises the following steps:
when data circulation is needed, including data sharing, opening or transaction, the index node in the region can issue index information of data resources to the information index chain;
the index node issues index information, and index information of the data resource is constructed according to the unique node identifier provided by the data resource, the unique identifier of the data resource and the positioning information of the data resource;
the location information of the data resource includes a blockchain ID (blockchain unique identifier) and a directory ID (directory unique identifier) of the directory chain of information; the block chain ID uniquely identifies a block chain of a certain area, the directory ID uniquely identifies a certain data resource, and the block chain ID and the directory ID uniquely identify data resource information of the certain area;
generating a data resource index online information block by an index node of a region to which a data resource belongs, and broadcasting and issuing the block to an information index block chain network of the region;
the index online information block generated by the index node comprises an information type, a unique identity of the index node, a unique identity of a data resource providing node, positioning information of the data resource, an index ID (index unique identifier), and a digital signature of the index node on information by using a private key of the index node, wherein the information type is index online;
after other nodes in the information index block chain network receive the block, acquiring a digital certificate or a public key of the corresponding index node through the node identity, and verifying the validity of the digital signature of the block through the node public key;
after the digital signature passes the verification, other nodes in the information index block chain network continue to verify the validity of the block;
after the block validity verification is passed, other nodes in the information index block chain network receive the block, namely the nodes write the new block into the information index block chain;
if any of the above authentication processes fail, the block will be discarded and the process will end.
The resource location in the step 3) is specifically as follows, including 3.1 index lookup and 3.2 directory lookup.
The step 3.1 of index searching specifically comprises the following steps that information resource positioning comprises two processes of index searching and directory searching, directory position information used for positioning information resources is searched by the index, and detailed information such as addresses and descriptions used for positioning the resources is searched by the directory;
the query node firstly traverses the information index block chain according to the identity identification of the data resource providing node and the unique identification of the data resource, and searches a corresponding index information block;
when the searched block information type is the index on-line, setting the current block as the block; if the searched block information type is not the index on-line, setting the current block to be null;
if the current block is empty after the traversal block is linked, the index search fails, and the processing is finished, otherwise, the current block is the block to be searched;
and the query node acquires the information directory block chain ID and the directory ID information in the block from the searched current block.
Step 3.2 directory lookup specifically includes: the query node traverses an information directory chain corresponding to the block chain ID according to the acquired information directory block chain ID and directory ID information, and searches for a directory information block corresponding to the directory ID; and when the searched block information type is the catalog release, setting the current block as the block. If the searched block information type is not the catalog release, setting the current block to be empty; if the current block is empty after the traversal block is linked, the directory search fails, and the processing is finished, otherwise, the current block is the block to be searched; the query node acquires the data resource directory information in the block from the searched current block;
and the query node acquires detailed information such as resource description, download address and the like from the data resource directory information to complete the resource searching process.
The step 4) of indexing the offline is specifically as follows,
the index node of the area can revoke the index information of the data resource of the area;
index nodes in the data resource area generate an index offline information block, and the block is broadcasted and issued to the information index block chain network of the area;
the index offline information block generated by the index node comprises the information type, the unique identity of the index node, the positioning information of the data resource, the unique identity of the data resource providing node, the index ID (index unique identifier) and the digital signature of the index node on the information by using the private key of the index node. Wherein the information type is an index offline;
after other nodes in the information index block chain network receive the block, acquiring a digital certificate or a public key of the corresponding index node through the node identity, and verifying the validity of the digital signature of the block through the node public key;
after other nodes in the information index block chain network receive the block, searching an online block of the index information on the block chain through the node identity identification and the index unique identification;
if the search index is failed to find the line block, the node discards the block and finishes the processing;
if the line block on the index is searched successfully, other nodes in the information index block chain network continuously verify the validity of the block;
after the block validity verification is passed, other nodes in the information index block chain network receive the block, namely the nodes write the new block into the information index block chain;
if any of the above authentication processes fail, the block will be discarded and the process will end.
Said step 5) directory revocation, in particular as follows,
the information node providing the data resource can revoke the directory information of the data resource in the region;
the information node of the data resource generates a resource directory revocation information block and broadcasts and issues the block to an information directory block chain network of the local area;
the resource directory revocation information block generated by the information node comprises the information type, the unique identity of the information node, directory information of the data resource, a directory ID (directory unique identifier), and a digital signature of the information by the information node with a private key of the information node. Wherein the information type is directory revocation;
after other nodes in the information directory block chain network receive the block, acquiring a digital certificate or a public key of the corresponding information node through the node identity, and verifying the validity of the digital signature of the block through the node public key;
after other nodes in the information directory block chain network receive the block, searching a release block of the directory information on the block chain through the node identity identification and the unique directory identification;
if the searching of the directory publishing block fails, the node discards the block and finishes the processing;
if the directory publishing block is searched successfully, other nodes in the information directory block chain network continue to verify the validity of the block;
after the block validity verification is passed, other nodes in the information directory block chain network receive the block, namely the nodes write the new block into the information directory block chain;
if any of the above authentication processes fail, the block will be discarded and the process will end.
It should be noted that the above-mentioned embodiments do not limit the scope of the present invention, and equivalents and substitutions made on the basis of the above-mentioned embodiments are included in the scope of the present invention.
Claims (3)
1. A method for managing a distributed chained data resource directory and index, the method comprising the steps of:
1) releasing the catalog;
2) indexing to be online;
3) positioning resources;
4) indexing a lower line;
5) directory revocation;
the step 1) of catalog release is as follows:
the information node providing the data resource can release the directory information of the data resource in the region;
an information node providing data resources generates a resource directory publishing information block and broadcasts and publishes the block to an information directory block chain network of the local area;
the resource directory publishing information block generated by the information node comprises an information type, a unique identity of the information node, directory information of the data resource, a directory ID (directory unique identifier), and a digital signature of the information node on the information by using a private key of the information node, wherein the identity of the node and the digital signature show the right of the information node on the data resource; wherein the information type is a directory issue;
after other nodes in the information directory block chain network receive the block, acquiring a digital certificate or a public key of the corresponding information node through the node identity, and verifying the validity of the digital signature of the block through the node public key;
after the digital signature passes the verification, other nodes in the information directory block chain network continue to verify the validity of the block;
after the block validity verification is passed, other nodes in the information directory block chain network receive the block, namely the nodes write the new block into the information directory block chain;
if any of the verification processes fails, the block is discarded and the process is ended;
the step 2) indexes to be online, and specifically comprises the following steps:
when data circulation is needed, including data sharing, opening or transaction, the index node in the region can issue index information of data resources to the information index chain;
the index node issues index information, and index information of the data resource is constructed according to the unique node identifier provided by the data resource, the unique identifier of the data resource and the positioning information of the data resource;
the positioning information of the data resource comprises a block chain ID (block chain unique identifier) and a directory ID (directory unique identifier) of the information directory chain; the block chain ID uniquely identifies a block chain of a certain area, the directory ID uniquely identifies a certain data resource, and the block chain ID and the directory ID uniquely identify data resource information of the certain area;
generating a data resource index online information block by an index node of a region to which a data resource belongs, and broadcasting and issuing the block to an information index block chain network of the region;
the index online information block generated by the index node comprises an information type, a unique identity of the index node, a unique identity of a data resource providing node, positioning information of the data resource, an index ID (index unique identifier), and a digital signature of the index node on information by using a private key of the index node, wherein the information type is index online;
after other nodes in the information index block chain network receive the block, acquiring a digital certificate or a public key of the corresponding index node through the node identity, and verifying the validity of the digital signature of the block through the node public key;
after the digital signature passes the verification, other nodes in the information index block chain network continue to verify the validity of the block;
after the block validity verification is passed, other nodes in the information index block chain network receive the block, namely the nodes write the new block into the information index block chain;
if any of the verification processes fails, the block is discarded and the process is ended;
the resource positioning in the step 3) specifically comprises 3.1 index searching and 3.2 directory searching;
the step 3.1 of index searching specifically comprises the following steps that information resource positioning comprises two processes of index searching and directory searching, directory position information used for positioning information resources is searched by the index, and detailed information such as addresses and descriptions used for positioning the resources is searched by the directory;
the query node firstly traverses the information index block chain according to the identity identification of the data resource providing node and the unique identification of the data resource, and searches a corresponding index information block;
when the searched block information type is the index on-line, setting the current block as the block; if the searched block information type is not the index on-line, setting the current block to be null;
if the current block is empty after the traversal block is linked, the index search fails, and the processing is finished, otherwise, the current block is the block to be searched;
the query node acquires the information directory block chain ID and the directory ID information in the block from the searched current block;
step 3.2 directory lookup specifically includes: the query node traverses an information directory chain corresponding to the block chain ID according to the acquired information directory block chain ID and directory ID information, and searches for a directory information block corresponding to the directory ID; when the searched block information type is the catalog issue, setting the current block as the block, and if the searched block information type is not the catalog issue, setting the current block as null; if the current block is empty after the traversal block is linked, the directory search fails, and the processing is finished, otherwise, the current block is the block to be searched; the query node acquires the data resource directory information in the block from the searched current block; and the query node acquires detailed information such as resource description, download address and the like from the data resource directory information to complete the resource searching process.
2. The distributed chained data resource directory and index management method of claim 1, wherein step 4) indexes offline, in particular as follows,
the index node of the area can revoke the index information of the data resource of the area;
index nodes in the data resource area generate an index offline information block, and the block is broadcasted and issued to the information index block chain network of the area;
the index offline information block generated by the index node comprises an information type, a unique identity of the index node, positioning information of data resources, a unique identity of a data resource providing node, an index ID (index unique identifier) and a digital signature of the index node on the information by using a private key of the index node, wherein the information type is the index offline;
after other nodes in the information index block chain network receive the block, acquiring a digital certificate or a public key of the corresponding index node through the node identity, and verifying the validity of the digital signature of the block through the node public key;
after other nodes in the information index block chain network receive the block, searching an online block of the index information on the block chain through the node identity identification and the index unique identification;
if the search index is failed to find the line block, the node discards the block and finishes the processing;
if the line block on the index is searched successfully, other nodes in the information index block chain network continuously verify the validity of the block;
after the block validity verification is passed, other nodes in the information index block chain network receive the block, namely the nodes write the new block into the information index block chain;
if any of the above authentication processes fail, the block will be discarded and the process will end.
3. The distributed chained data resource directory and index management method of claim 1, wherein said step 5) directory undo is performed by, in particular,
the information node providing the data resource can revoke the directory information of the data resource in the region;
the information node of the data resource generates a resource directory revocation information block and broadcasts and issues the block to an information directory block chain network of the local area;
the resource directory revocation information block generated by the information node comprises an information type, a unique identity of the information node, directory information of the data resource, a directory ID (directory unique identifier), and a digital signature of the information node on the information by using a private key of the information node, wherein the information type is directory revocation;
after other nodes in the information directory block chain network receive the block, acquiring a digital certificate or a public key of the corresponding information node through the node identity, and verifying the validity of the digital signature of the block through the node public key;
after other nodes in the information directory block chain network receive the block, searching a release block of the directory information on the block chain through the node identity identification and the unique directory identification;
if the searching of the directory publishing block fails, the node discards the block and finishes the processing;
if the directory publishing block is searched successfully, other nodes in the information directory block chain network continue to verify the validity of the block;
after the block validity verification is passed, other nodes in the information directory block chain network receive the block, namely the nodes write the new block into the information directory block chain;
if any of the above authentication processes fail, the block will be discarded and the process will end.
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