CN113268763A - Block chain-based distributed private data storage method - Google Patents
Block chain-based distributed private data storage method Download PDFInfo
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Abstract
The invention relates to a block chain-based distributed private data storage method, which is applied to a block chain-based distributed private data storage system and comprises a client, a data integrity verification module, a data calibration module, a private database and a block chain module. And the user accesses the distributed private data storage system based on the block chain through the client and carries out integrity verification on the received data block through the data integrity verification module. The data calibration module is used for realizing the standardized calibration processing of the data, and the private database and the block chain module are used for realizing the safe storage and the quick query of the original data packet and the uplink data abstract information.
Description
Technical Field
The invention relates to the field of block chain data storage, in particular to a distributed privacy data storage method based on a block chain.
Background
With the development of science and technology and the prosperity of the internet, people generate a large amount of data in daily life and work. With the advent of the big data age, data also plays an increasingly important role in the internet society. For enterprises, data is taken as core assets and effective competitiveness of the enterprises, and privacy and confidentiality are more and more valued; most of the existing private data storage systems are in a centralized storage mode, the security of data cannot be effectively guaranteed, and the query and access efficiency of the data is low under the condition of big data; the block chain technology is based on the distributed account book technology, so that the safety, the historical traceability and the non-tampering property of data can be ensured, and a distributed safe storage environment is provided for data storage; therefore, the method for storing the private data based on the block chain technology has important significance.
Disclosure of Invention
In view of the above, the present invention provides a block chain based distributed private data storage method that solves or partially solves the above-mentioned problems.
In order to achieve the effect of the technical scheme, the technical scheme of the invention is as follows: the distributed privacy data storage method based on the block chain comprises the following steps:
the distributed privacy data storage method based on the block chain is applied to a distributed privacy data storage system based on the block chain, and the distributed privacy data storage system based on the block chain comprises the following steps: the system comprises a client, a data integrity checking module, a data calibration module, a private database and a block chain module;
the client provides a human-computer interaction entrance for accessing the distributed privacy data storage system based on the block chain for a user; the user can upload the original privacy data to the block chain module and the private database through the client, and can also inquire the data in the block chain module and the private database through the client;
the data integrity checking module is used for verifying the integrity of a to-be-verified data packet formed by the received safety data block from the client;
the data calibration module carries out data standardization calibration processing on the original data packet according to different data types,
generating a calibration data keyword set, and generating a calibration data set after matching the calibration data keyword set with the original data packet;
the private database stores the original data packet through the created storage block, and realizes quick query and positioning of the original data packet through calibrating a data index number and an index outer chain;
the block chain module comprises a data uplink node, a data inquiry node and a private chain;
the storage process of the distributed privacy data storage system based on the block chain comprises the following steps:
step 1: a user realizes man-machine interaction with the distributed privacy data storage system based on the block chain through a client;
a user acquires the access right of a client in a single sign-on mode; the single sign-on refers to that a user can access authorized system resources after completing one-time identity authentication based on an identity joint authentication technology in a private and credible local area network system, wherein the authorized system resources comprise a client;
the specific method comprises the following steps: the identity joint authentication technology creates an identity joint authentication account for each user, and information of authorized system resources which can be accessed by the user and a safety identity joint certificate of the user are stored in the identity joint authentication account; when a user successfully logs in the private credible local area network system once, a server of the private credible local area network system issues a security identity joint certificate for the user, the security identity joint certificate is updated to an identity joint authentication account, when the user accesses other authorized system resources in the private credible local area network system, the user stored in the identity joint authentication account by the security identity joint certificate is shared and transmitted in the authorized system resources which can be accessed in the private credible local area network system, the identity verification of the user is completed through the existing security identity joint certificate in the identity joint authentication account without performing additional security identity verification operation, the unified management of the identity verification of the user is realized through the mode, and the security access authority of the user to a client is ensured;
step 2: the client comprises a private data uploading unit and a private data inquiring unit;
the private data uploading unit provides convenient and efficient private data uploading service for the user; the private data query unit provides a private data query service with intelligent matching for the user; the private data uploading unit provides the following for the user: a basic upload function, a batch upload function and an automatic upload function;
the user can manually and singly add the private data to be uploaded through the basic uploading function;
a user can add a plurality of private data to be uploaded with different data types at one time through a batch uploading function;
a user sets an automatic uploading rule through an automatic uploading function, and private data are automatically uploaded when the automatic uploading rule is met;
and step 3: the client encrypts the private data to be uploaded of the private data uploading unit by using a private key of the client, packages the private data into a security data packet, and transmits the security data packet to the data integrity verification module after passing through a dynamic security link established between the client and the data integrity verification module; the safety data packet has a unique data packet marking ID which is uniquely matched with the safety data packet; the dynamic security link plans a shortest dynamic security link for the security data packet according to the occupation condition of the real-time dynamic security link, so that the efficient transmission of the security data packet is ensured; the method comprises the steps that a safety data packet is divided into safety data blocks with consistent sizes in the transmission process of a dynamic safety link, each safety data block is allocated with a unique position tag, and the position tags are generated based on a data packet marking ID of the safety data packet and a logic sequence of the safety data blocks in the safety data packet; the position tag is uniquely matched with the safety data block;
and 4, step 4: the data integrity checking module receives the safety data blocks transmitted by the client, and splices the received safety data blocks according to the position label of each safety data block to generate a data packet to be verified; the data integrity checking module extracts the linear combination of the position labels of all the safety data blocks forming the data packet to be checked, then generates an aggregation label and sends the aggregation label to the client for integrity checking;
when the aggregation label does not pass the integrity check of the client, the client sends an integrity check failure signal to the data integrity check module; after receiving the integrity verification failure signal, the data integrity verification module discards a data packet to be verified and sends a private data uploading failure signal to the client;
when the aggregation label passes the integrity check of the client, the client sends an integrity check passing signal to the data integrity check module; after receiving the integrity verification passing signal, the data integrity verification module marks the data packet to be verified as an integral data packet, and then decrypts the integral data packet by using a public key of the client to generate an original data packet;
and 5: the data integrity checking module transmits the original data packet to the data calibration module, and the data calibration module carries out data standardized calibration processing on the original data packet according to different data types; the data calibration module maintains a data calibration mapping model, and the data calibration mapping model defines a mapping rule of data standardized calibration; the method comprises the steps that an original data packet is subjected to data standardization calibration processing to generate a calibration data set;
the method for the data standardization calibration processing comprises the following steps: firstly, iterative key information extraction is carried out on an original data packet in a random scale mode, after the iterative key information extraction, a key information set is formed by the obtained key information, then, each key information in the key information set is subjected to data calibration with a data calibration mapping model in sequence based on a binary search method, each key information corresponds to a calibration data keyword in the data calibration mapping model, and when all key information in the key information set completes the data calibration, a calibration data keyword set formed by all the calibration data keywords is output; matching the calibration data keyword set with the original data packet to generate a calibration data set;
step 6: the data calibration module sends the calibration data set to a private database, and the private database decomposes the calibration data set and extracts a calibration data keyword set and an original data packet; the private database allocates a unique storage block for the original data packet, wherein the storage block comprises an effective storage space, a unique index number of calibration data and an index outer chain; the effective storage space is used for storing the original data packet; the index number of the calibration data is the only mark of the storage block; the index outer chain is used for storing a calibration data keyword set; the storage block realizes the quick query and positioning of the original data packet by calibrating the data index number and the index outer chain;
and 7: the data uplink node of the block chain module monitors the change of a storage block of a private database, when the private database successfully creates a new storage block, a data uplink program of the data uplink node is triggered, and the data uplink program firstly generates uplink data abstract information according to an original data packet, a calibration data index number and an index external chain of the storage block; the uplink data abstract information comprises two parts of original data abstract information and index information; the original data abstract information is a hash value extracted by performing SHA256 algorithm on an original data packet; the index information consists of a calibration data index number and an index outer chain; the data uplink node signs the uplink data abstract information, adds a timestamp on the signed uplink data abstract information, sends the signed uplink data abstract information to a private chain of the block chain module, triggers a data uplink intelligent contract in the private chain, verifies the uplink data abstract information by the data uplink intelligent contract, and creates a new block to store the uplink data abstract information after the verification is passed;
and 8: when a user initiates a private data query request to a data query node of a block chain module through a private data query unit of a client, the data query node firstly carries out security verification on the private data query request, after the private data query request passes the verification, the data query node forwards the private data query request to a private chain of the block chain module, an intelligent contract for querying the private data in the private chain is triggered, and the intelligent contract for querying the private data decrypts the private data query request; searching the stored uplink data abstract information in the private chain, searching the uplink data abstract information matched with the private data query request, and encrypting the calibration data index number in the uplink data abstract information and returning the encrypted calibration data index number to the data query node when the matched uplink data abstract information is successfully searched; meanwhile, a private chain of the block chain module creates a new block record private data query request and uplink data summary information matched with the private data query request;
and step 9: after receiving the encrypted index number of the calibration data, the data query node initiates a specified data query request containing the index number of the calibration data to a private database; after the private database receives the specified data query request, the storage block corresponding to the calibration data index number is quickly positioned according to the calibration data index number in the specified data query request, and then the original data packet in the storage block is returned to the client for the user to browse.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more apparent, the present invention is described in detail below with reference to the embodiments. It should be noted that the specific embodiments described herein are only for illustrating the present invention and are not to be construed as limiting the present invention, and products that can achieve the same functions are included in the scope of the present invention. The specific method comprises the following steps:
example 1: the following description will exemplify an application scenario of the block chain-based distributed private data storage method as follows:
the distributed privacy data storage method based on the block chain is applied to a distributed privacy data storage system based on the block chain, and the distributed privacy data storage system based on the block chain comprises the following steps: the system comprises a client, a data integrity checking module, a data calibration module, a private database and a block chain module;
the client provides a human-computer interaction entrance for accessing the distributed privacy data storage system based on the block chain for a user; the user can upload the original privacy data to the block chain module and the private database through the client, and can also inquire the data in the block chain module and the private database through the client;
the data integrity checking module is used for verifying the integrity of a to-be-verified data packet formed by the received safety data block from the client;
the data calibration module carries out data standardization calibration processing on the original data packet according to different data types,
generating a calibration data keyword set, and generating a calibration data set after matching the calibration data keyword set with the original data packet;
the private database stores the original data packet through the created storage block, and realizes quick query and positioning of the original data packet through calibrating a data index number and an index outer chain;
the block chain module comprises a data uplink node, a data inquiry node and a private chain;
the storage process of the distributed privacy data storage system based on the block chain comprises the following steps:
step 1: a user realizes man-machine interaction with the distributed privacy data storage system based on the block chain through a client;
a user acquires the access right of a client in a single sign-on mode; the single sign-on refers to that a user can access authorized system resources after completing one-time identity authentication based on an identity joint authentication technology in a private and credible local area network system, wherein the authorized system resources comprise a client;
the specific method comprises the following steps: the identity joint authentication technology creates an identity joint authentication account for each user, and information of authorized system resources which can be accessed by the user and a safety identity joint certificate of the user are stored in the identity joint authentication account; when a user successfully logs in the private credible local area network system once, a server of the private credible local area network system issues a security identity joint certificate for the user, the security identity joint certificate is updated to an identity joint authentication account, when the user accesses other authorized system resources in the private credible local area network system, the user stored in the identity joint authentication account by the security identity joint certificate is shared and transmitted in the authorized system resources which can be accessed in the private credible local area network system, the identity verification of the user is completed through the existing security identity joint certificate in the identity joint authentication account without performing additional security identity verification operation, the unified management of the identity verification of the user is realized through the mode, and the security access authority of the user to a client is ensured;
step 2: the client comprises a private data uploading unit and a private data inquiring unit;
the private data uploading unit provides convenient and efficient private data uploading service for the user; the private data query unit provides a private data query service with intelligent matching for the user; the private data uploading unit provides the following for the user: a basic upload function, a batch upload function and an automatic upload function;
the user can manually and singly add the private data to be uploaded through the basic uploading function;
a user can add a plurality of private data to be uploaded with different data types at one time through a batch uploading function;
a user sets an automatic uploading rule through an automatic uploading function, and private data are automatically uploaded when the automatic uploading rule is met;
and step 3: the client encrypts the private data to be uploaded of the private data uploading unit by using a private key of the client, packages the private data into a security data packet, and transmits the security data packet to the data integrity verification module after passing through a dynamic security link established between the client and the data integrity verification module; the safety data packet has a unique data packet marking ID which is uniquely matched with the safety data packet; the dynamic security link plans a shortest dynamic security link for the security data packet according to the occupation condition of the real-time dynamic security link, so that the efficient transmission of the security data packet is ensured; the method comprises the steps that a safety data packet is divided into safety data blocks with consistent sizes in the transmission process of a dynamic safety link, each safety data block is allocated with a unique position tag, and the position tags are generated based on a data packet marking ID of the safety data packet and a logic sequence of the safety data blocks in the safety data packet; the position tag is uniquely matched with the safety data block;
and 4, step 4: the data integrity checking module receives the safety data blocks transmitted by the client, and splices the received safety data blocks according to the position label of each safety data block to generate a data packet to be verified; the data integrity checking module extracts the linear combination of the position labels of all the safety data blocks forming the data packet to be checked, then generates an aggregation label and sends the aggregation label to the client for integrity checking;
when the aggregation label does not pass the integrity check of the client, the client sends an integrity check failure signal to the data integrity check module; after receiving the integrity verification failure signal, the data integrity verification module discards a data packet to be verified and sends a private data uploading failure signal to the client;
when the aggregation label passes the integrity check of the client, the client sends an integrity check passing signal to the data integrity check module; after receiving the integrity verification passing signal, the data integrity verification module marks the data packet to be verified as an integral data packet, and then decrypts the integral data packet by using a public key of the client to generate an original data packet;
and 5: the data integrity checking module transmits the original data packet to the data calibration module, and the data calibration module carries out data standardized calibration processing on the original data packet according to different data types; the data calibration module maintains a data calibration mapping model, and the data calibration mapping model defines a mapping rule of data standardized calibration; the method comprises the steps that an original data packet is subjected to data standardization calibration processing to generate a calibration data set;
the method for the data standardization calibration processing comprises the following steps: firstly, iterative key information extraction is carried out on an original data packet in a random scale mode, after the iterative key information extraction, a key information set is formed by the obtained key information, then, each key information in the key information set is subjected to data calibration with a data calibration mapping model in sequence based on a binary search method, each key information corresponds to a calibration data keyword in the data calibration mapping model, and when all key information in the key information set completes the data calibration, a calibration data keyword set formed by all the calibration data keywords is output; matching the calibration data keyword set with the original data packet to generate a calibration data set;
step 6: the data calibration module sends the calibration data set to a private database, and the private database decomposes the calibration data set and extracts a calibration data keyword set and an original data packet; the private database allocates a unique storage block for the original data packet, wherein the storage block comprises an effective storage space, a unique index number of calibration data and an index outer chain; the effective storage space is used for storing the original data packet; the index number of the calibration data is the only mark of the storage block; the index outer chain is used for storing a calibration data keyword set; the storage block realizes the quick query and positioning of the original data packet by calibrating the data index number and the index outer chain;
and 7: the data uplink node of the block chain module monitors the change of a storage block of a private database, when the private database successfully creates a new storage block, a data uplink program of the data uplink node is triggered, and the data uplink program firstly generates uplink data abstract information according to an original data packet, a calibration data index number and an index external chain of the storage block; the uplink data abstract information comprises two parts of original data abstract information and index information; the original data abstract information is a hash value extracted by performing SHA256 algorithm on an original data packet; the index information consists of a calibration data index number and an index outer chain; the data uplink node signs the uplink data abstract information, adds a timestamp on the signed uplink data abstract information, sends the signed uplink data abstract information to a private chain of the block chain module, triggers a data uplink intelligent contract in the private chain, verifies the uplink data abstract information by the data uplink intelligent contract, and creates a new block to store the uplink data abstract information after the verification is passed;
and 8: when a user initiates a private data query request to a data query node of a block chain module through a private data query unit of a client, the data query node firstly carries out security verification on the private data query request, after the private data query request passes the verification, the data query node forwards the private data query request to a private chain of the block chain module, an intelligent contract for querying the private data in the private chain is triggered, and the intelligent contract for querying the private data decrypts the private data query request; searching the stored uplink data abstract information in the private chain, searching the uplink data abstract information matched with the private data query request, and encrypting the calibration data index number in the uplink data abstract information and returning the encrypted calibration data index number to the data query node when the matched uplink data abstract information is successfully searched; meanwhile, a private chain of the block chain module creates a new block record private data query request and uplink data summary information matched with the private data query request;
and step 9: after receiving the encrypted index number of the calibration data, the data query node initiates a specified data query request containing the index number of the calibration data to a private database; after receiving the specified data query request, the private database quickly positions a storage block corresponding to the calibration data index number according to the calibration data index number in the specified data query request, and then returns an original data packet in the storage block to the client for browsing by a user;
the beneficial results of the invention are as follows: the invention provides a block chain-based distributed private data storage method, which can be applied to a block chain-based distributed private data storage system and comprises a client, a data integrity verification module, a data calibration module, a private database and a block chain module; the client provides a human-computer interaction entrance for accessing the distributed privacy data storage system based on the block chain for a user; the data integrity checking module is used for verifying the integrity of the received data block from the client; the data calibration module carries out data standardization calibration processing on the original data packet according to different data types to generate a calibration data set; the private database stores the original data packet through the created storage block, and realizes quick query and positioning of the original data packet through calibrating a data index number and an index outer chain; the block chain module comprises a data uplink node, a data inquiry node and a private chain; the intelligent control of data storage and data query is realized through an intelligent contract; the safety, traceability and non-tamper property of data in the private chain are ensured;
the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the claims of the present invention. While the foregoing description will be understood and appreciated by those skilled in the relevant art, other equivalents may be made thereto without departing from the scope of the claims.
Claims (1)
1. A distributed privacy data storage method based on a block chain is characterized by comprising the following contents:
the distributed privacy data storage method based on the block chain is applied to a distributed privacy data storage system based on the block chain, and the distributed privacy data storage system based on the block chain comprises the following steps: the system comprises a client, a data integrity checking module, a data calibration module, a private database and a block chain module;
the client provides a human-computer interaction entrance for accessing the block chain-based distributed privacy data storage system for a user; the user can upload original privacy data to the blockchain module and the private database through the client, and can also query data in the blockchain module and the private database through the client;
the data integrity checking module is used for verifying the integrity of a to-be-verified data packet formed by the received safety data block from the client;
the data calibration module carries out data standardization calibration processing on the original data packet according to different data types,
generating a calibration data keyword set, and generating a calibration data set after matching the calibration data keyword set with the original data packet;
the private database stores an original data packet through the created storage block, and realizes quick query and positioning of the original data packet through calibrating a data index number and an index external chain;
the block chain module comprises a data uplink node, a data query node and a private chain;
the storage process of the distributed privacy data storage system based on the block chain comprises the following steps:
step 1: the user realizes man-machine interaction with the distributed privacy data storage system based on the block chain through the client;
the user acquires the access right of the client in a single sign-on mode; the single sign-on refers to that the user can access authorized system resources after completing one-time identity authentication based on an identity joint authentication technology in a private and credible local area network system, wherein the authorized system resources comprise the client;
the specific method comprises the following steps: the identity joint authentication technology creates an identity joint authentication account for each user, wherein information of authorized system resources which can be accessed by the user and a safety identity joint certificate of the user are stored in the identity joint authentication account; when the user successfully logs in the private credible local area network system once, the server of the private credible local area network system issues the security identity joint certificate for the user, the security identity joint certificate is updated to the identity joint authentication account, when the user accesses other authorized system resources in the private credible local area network system, the security identity joint certificate shares and transmits authorized system resources which can be accessed by the user in the private credible local area network system and is stored in the identity joint authentication account, the identity authentication of the user is completed through the security identity joint certificate existing in the identity joint authentication account without performing additional security identity authentication operation, and the uniform management of the identity authentication of the user is realized through the mode, meanwhile, the safety access authority of the user to the client is ensured;
step 2: the client comprises a private data uploading unit and a private data inquiring unit;
the private data uploading unit provides convenient and efficient private data uploading service for the user; the private data query unit provides private data query service with intelligent matching for the user; the private data uploading unit provides the user with: a basic upload function, a batch upload function and an automatic upload function;
the user can manually and singly add the private data to be uploaded through the basic uploading function;
the user can add a plurality of private data to be uploaded with different data types at one time through the batch uploading function;
the user sets an automatic uploading rule through the automatic uploading function, and private data are automatically uploaded when the automatic uploading rule is met;
and step 3: the client encrypts the private data to be uploaded of the private data uploading unit by using a private key of the client, packages the private data into a secure data packet, and transmits the secure data packet to the data integrity verification module after passing through a dynamic secure link established between the client and the data integrity verification module; the security data packet has a unique data packet identification ID which is uniquely matched with the security data packet; the dynamic security link plans a shortest dynamic security link for the security data packet according to the occupation condition of the real-time dynamic security link, so that the efficient transmission of the security data packet is ensured; the security data packet is divided into security data blocks with consistent sizes in the transmission process of the dynamic security link, each security data block is allocated with a unique position tag, and the position tag is generated based on the data packet identification ID of the security data packet and the logic sequence of the security data block in the security data packet; the location tag uniquely matches the security data block;
and 4, step 4: the data integrity checking module receives the safety data blocks transmitted by the client, and splices the received safety data blocks according to the position label of each safety data block to generate a data packet to be verified; the data integrity checking module extracts the linear combination of the position labels of all the safety data blocks forming the data packet to be verified, then generates an aggregation label and sends the aggregation label to the client for integrity checking;
when the aggregation label does not pass the integrity check of the client, the client sends an integrity check failure signal to the data integrity check module; after receiving the integrity verification failure signal, the data integrity verification module discards the data packet to be verified and sends a private data uploading failure signal to the client;
when the aggregation tag passes the integrity check of the client, the client sends an integrity check passing signal to the data integrity check module; after receiving the integrity verification passing signal, the data integrity verification module marks the data packet to be verified as an integral data packet, and then decrypts the integral data packet by using the public key of the client to generate an original data packet;
and 5: the data integrity checking module transmits an original data packet to the data calibration module, and the data calibration module carries out data standardized calibration processing on the original data packet according to different data types; the data calibration module maintains a data calibration mapping model, and the data calibration mapping model defines a mapping rule of data standardized calibration; the original data packet is subjected to the data standardization calibration processing to generate a calibration data set;
the data normalization calibration processing method comprises the following steps: firstly, iterative key information extraction is carried out on the original data packet in a random scale mode, after the iterative key information extraction, a key information set is formed by the obtained key information, then, each key information in the key information set is subjected to data calibration with the data calibration mapping model in sequence based on a binary search method, each key information corresponds to one calibration data keyword in the data calibration mapping model, and when all key information in the key information set completes the data calibration, a calibration data keyword set formed by all the calibration data keywords is output; matching the calibration data keyword set with the original data packet to generate a calibration data set;
step 6: the data calibration module sends the calibration data set to the private database, and the private database decomposes the calibration data set and extracts the calibration data keyword set and the original data packet; the private database allocates a unique storage block for the original data packet, wherein the storage block comprises an effective storage space, a unique index number of calibration data and an index outer chain; the effective storage space is used for storing the original data packet; the index number of the calibration data is the only mark of the storage block; the index outer chain is used for storing the calibration data keyword set; the storage block realizes the quick query and positioning of the original data packet through the index number of the calibration data and the index outer chain;
and 7: a data uplink node of the block chain module monitors the change of a storage block of the private database, and when the private database successfully creates a new storage block, a data uplink program of the data uplink node is triggered, wherein the data uplink program firstly generates uplink data abstract information according to the original data packet, the calibration data index number and the index external chain of the storage block; the uplink data abstract information comprises two parts of original data abstract information and index information; the original data abstract information is a hash value extracted by performing SHA256 algorithm-based extraction on the original data packet; the index information consists of the index number of the calibration data and the index outer chain; the data uplink link node signs the uplink data abstract information, carries out timestamp stamping on the signed uplink data abstract information, sends the signed uplink data abstract information to a private chain of the block chain module, triggers a data uplink intelligent contract in the private chain, verifies the uplink data abstract information through the data uplink intelligent contract, and creates a new block to store the uplink data abstract information after verification;
and 8: when the user initiates a private data query request to the data query node of the blockchain module through a private data query unit of the client, the data query node firstly performs security verification on the private data query request, after the private data query request passes the verification, the data query node forwards the private data query request to a private chain of the blockchain module, and triggers a private data query intelligent contract in the private chain, and the private data query intelligent contract decrypts the private data query request; then, searching the stored uplink data summary information in the private chain, searching the uplink data summary information matched with the private data query request, and encrypting the index number of the calibration data in the uplink data summary information and returning the encrypted index number to the data query node when the matched uplink data summary information is successfully searched; meanwhile, a new block is created in a private chain of the block chain module to record the private data query request and the uplink data summary information matched with the private data query request;
and step 9: after receiving the encrypted calibration data index number, the data query node initiates a specified data query request containing the calibration data index number to the private database; and after receiving the specified data query request, the private database quickly locates a storage block corresponding to the calibration data index number according to the calibration data index number in the specified data query request, and then returns an original data packet in the storage block to the client for the user to browse.
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