CN113158224A - Business data sharing model system based on block chain - Google Patents
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
- G06F21/6245—Protecting personal data, e.g. for financial or medical purposes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
- G06F21/16—Program or content traceability, e.g. by watermarking
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
- G06F21/6227—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database where protection concerns the structure of data, e.g. records, types, queries
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
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Abstract
The invention discloses a business data sharing model system based on a block chain, which relates to the technical field of the block chain and comprises a business data center module, a service center module, an alliance center module, a public block chain module and a private interplanetary file cluster module. The invention constructs a alliance chain among business data centers, maintains the operation of the system together on the basis, and the business data copy is hooked with the public chain, so that the data maintenance cost can be reduced, and the data security is ensured.
Description
Technical Field
The invention relates to the technical field of block chains, in particular to a business data sharing model system based on a block chain.
Background
The business data records various data of business activities, is an important basis for business decision making, and has extremely high business value. On the premise of rapid development of modern scientific technology, commercial data is converted from traditional data into digital data. In order to maximize the benefit of business data, the value of combining the hot big data, data mining and mining the business data in multiple aspects of the block chain is also a research hot spot in recent years.
The conventional business data management system relies on a business information management system, and although the conventional business data management system has convenience, some problems still exist. The business data is easy to modify in the using process, such as the management, transmission and other processes of the data; all business data are an information island for each business center, and data of each business center cannot be effectively shared, so that the data value cannot be maximized; the existing commercial data security measures cannot be recovered by means of technologies such as digital signatures and watermarks when extreme conditions such as data damage and tampering occur. The authenticity of the business data cannot be guaranteed, and if the data of the business center is invaded or related personnel do hands and feet, the authenticity and the safety of the business data are threatened.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
In view of the problems in the related art, the present invention provides a business data sharing model system based on a block chain, so as to overcome the above technical problems in the related art.
The technical scheme of the invention is realized as follows:
a business data sharing model system based on a block chain comprises a business data center module, a service center module, a alliance center module, a public block chain module and a private interplanetary file cluster module, wherein the business data center module is connected with the service center module through the public block chain module;
the business data center module is used as an important node of a business data sharing model to directly participate in a block chain center of the alliance, so that data protection, verification and sharing are realized;
the service center module is used for providing an intelligent contract and an interplanetary file system interface for the business data sharing model in an interface form;
the alliance center module is used for storing data information of the business data center module through an intelligent contract, wherein the data information comprises a digital identity and abstract information of the business data center module, the identity registration, recovery, protection and sharing of the business data center module are realized, and the identity registration, recovery, protection and sharing are regularly interacted with the public block chain module;
the public block chain module is used for periodically storing a database copy mirror image of the alliance center module so as to ensure the authenticity of the data of the alliance center module;
the private interplanetary file cluster module is used for storing original information of commercial data, realizing identity authentication of nodes and guaranteeing data security.
Further, the intelligent contracts include node information storage contracts, node information management contracts, and business data management contracts.
Further, the business data management contracts include business data information storage contracts, business data entitlement control contracts, and business data sharing management contracts.
Further, the business data center module further comprises generating the business data center module identity, comprising the following steps:
will public key KpubAnd basic information is disclosed to the alliance center module, the basic information comprises the address of the business data center module, meanwhile, a node is randomly entrusted to create a voting contract, and the node of the alliance center module participates in voting;
if the number of tickets is over half, the business data information storage contract saves the public key information of the business data center module,
an identity of the business data center module dcID is then generated for it and a business data information storage contract and a business data entitlement control contract are created, represented as triplets (dcID, CDSC, CDCC).
Further, the method also comprises the step of resetting the key, comprising the following steps:
the business data center module regenerates a pair of keys<Kpubnew，Kprinew>Private key KprinewSelf-preservation;
the new public key is disclosed to the alliance center module, the secret key is reset, the identity of the business data center module is registered, and therefore the identity of the business data center module is attached, and a node is entrusted randomly to create a reset voting contract;
the whole alliance center module votes again, if the number of votes is more than half, the node information management contract resets the public key of the business data center module, and the public key is reset<Kpub，Kpri>Is replaced by< Kpubnew，Kprinew>。
Further, the method also comprises the data verification of the public block chain module on the block chain of the alliance center module, and comprises the following steps:
the business data center module signs the dcID and the data number to obtain sign (dcId, dataID), and sends the result to the service center module;
after receiving the message, the service center module obtains a latest alliance data block copy mapping from an alliance data protection contract in the public block chain module;
comparing and verifying the block information with the block information in the alliance center module;
if the verification is passed, the signature is sent to the intelligent contract for the next operation;
and if the verification fails, returning the data exception of the alliance center module.
Further, the method also comprises the step of sharing the business data, which comprises the following steps:
commercial digital center A uses private key AKprirNumbering dataID and dcID of data object to be sharedASigning to obtain signa(dataID，dcIDA) Sign is then sent through the service centre modulea(dataID，dcIDA) Sending to a business data sharing management contract;
after receiving the request, the business data sharing management contract calls the dcID pair of the business data authority control contractAChecking, and writing the checked result into a sharing sequence of the contract data object dataID after the checking is passed;
the business data center modelBlock B uses private key BKprirFor dataID, dcIDBSigning to obtain signb(dataID，dcIDB) Sign is then sent through the service centre moduleb(dataID，dcIDB) Sending to a business data sharing management contract;
after receiving the request, the business data sharing management contract calls a business data authority control contract to check the authority of the business data center module B, the check means that the business data authority control contract has the reading authority of the data object, and the hash value and the fingerprint of the data object corresponding to the data object are read;
the commercial data center module B acquires the encrypted data object from the interplanetary file cluster system according to the acquired data object fingerprint, and simultaneously acquires the dataID and the dcIDBSending the data object to the commercial data center module A to acquire a decryption key of the data object;
after receiving the request of B, the business data sharing management contract checks the sharing record of the business data according to the received information, and if the sharing record is wrong, the sharing is failed; otherwise, if the sharing is true, the dcID is obtained from the node information management contractBCorresponding public key BKpubrAfter asymmetric encryption is carried out on the decryption key, the decryption key is sent to the B;
b uses the private key BKprirAnd decrypting the received message to obtain an original decryption key, and decrypting the encrypted data object by using the decryption key to obtain the original information of the data object.
The invention has the beneficial effects that:
the business data sharing model system based on the block chain is characterized in that a business data center module, a service center module, a alliance center module, a public block chain module and a private interstellar file cluster module are integrated, alliances are constructed among business data centers, operation of the system is maintained together on the basis, business data copies are hooked with the public chains, data maintenance cost can be reduced, and data safety is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating a system of a blockchain-based business data sharing model according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a block chain-based business data sharing model system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
According to an embodiment of the present invention, a block chain based business data sharing model system is provided.
As shown in fig. 1-2, a business data sharing model system based on a block chain according to an embodiment of the present invention includes a business data center module, a service center module, a federation center module, a public block chain module, and a private interplanetary file cluster module, where;
the business data center module is used as an important node of a business data sharing model to directly participate in a block chain center of the alliance, so that data protection, verification and sharing are realized;
the service center module is used for providing an intelligent contract and an interplanetary file system interface for the business data sharing model in an interface form;
the alliance center module is used for storing data information of the business data center module through an intelligent contract, wherein the data information comprises a digital identity and abstract information of the business data center module, the identity registration, recovery, protection and sharing of the business data center module are realized, and the identity registration, recovery, protection and sharing are regularly interacted with the public block chain module;
the public block chain module is used for periodically storing a database copy mirror image of the alliance center module so as to ensure the authenticity of the data of the alliance center module;
the private interplanetary file cluster module is used for storing original information of commercial data, realizing identity authentication of nodes and guaranteeing data security.
Wherein the intelligent contract comprises a node information storage contract, a node information management contract, and a business data management contract.
Wherein the business data management contracts include business data information storage contracts, business data entitlement control contracts, and business data sharing management contracts.
Wherein the business data center module further comprises generating the business data center module identity, comprising the steps of:
will public key KpubAnd basic information is disclosed to the alliance center module, the basic information comprises the address of the business data center module, meanwhile, a node is randomly entrusted to create a voting contract, and the node of the alliance center module participates in voting;
if the number of tickets is over half, the business data information storage contract saves the public key information of the business data center module,
an identity of the business data center module dcID is then generated for it and a business data information storage contract and a business data entitlement control contract are created, represented as triplets (dcID, CDSC, CDCC).
Wherein, still include the secret key and reset the contract, including the following step:
the business data center module regenerates a pair of keys<Kpubnew，Kprinew>Private key KprinewSelf-preservation;
the new public key is disclosed to the alliance center module, the secret key is reset, the identity of the business data center module is registered, and therefore the identity of the business data center module is attached, and a node is entrusted randomly to create a reset voting contract;
the whole alliance center module votes again, if the number of votes is more than half, the node information management contract resets the public key of the business data center module, and the public key is reset<Kpub，Kpri>Is replaced by< Kpubnew，Kprinew>。
The method also comprises the step that the public block chain module verifies the data of the block chain of the alliance center module, and the method comprises the following steps:
the business data center module signs the dcID and the data number to obtain sign (dcID, dataID), and sends the result to the service center module;
after receiving the message, the service center module obtains a latest alliance data block copy mapping from an alliance data protection contract in the public block chain module;
comparing and verifying the block information with the block information in the alliance center module;
if the verification is passed, the signature is sent to the intelligent contract for the next operation;
and if the verification fails, returning the data exception of the alliance center module.
The method also comprises the step of sharing business data, and comprises the following steps:
commercial digital center A uses private key AKprirNumbering dataID and dcID of data object to be sharedASigning to obtain signa(dataID，dcIDA) Sign is then sent through the service centre modulea(dataID，dcIDA) Sending to a business data sharing management contract;
after receiving the request, the business data sharing management contract calls the dcID pair of the business data authority control contractAChecking, and writing the checked result into a sharing sequence of the contract data object dataID after the checking is passed;
the business data center module B uses a private key BKprirFor dataID, dcIDBSigning to obtain signb(dataID，dcIDB) Sign is then sent through the service centre moduleb(dataID，dcIDB) Sending to a business data sharing management contract;
after receiving the request, the business data sharing management contract calls a business data authority control contract to check the authority of the business data center module B, the check means that the business data authority control contract has the reading authority of the data object, and the hash value and the fingerprint of the data object corresponding to the data object are read;
the commercial data center module B acquires the encrypted data object from the interplanetary file cluster system according to the acquired data object fingerprint, and simultaneously acquires the dataID and the dcIDBSending the data object to the commercial data center module A to acquire a decryption key of the data object;
after receiving the request of B, the business data sharing management contract checks the sharing record of the business data according to the received information, and if the sharing record is wrong, the sharing is failed; otherwise, if the sharing is true, the dcID is obtained from the node information management contractBCorresponding public key BKpubrAfter asymmetric encryption is carried out on the decryption key, the decryption key is sent to the B;
b uses the private key BKprirAnd decrypting the received message to obtain an original decryption key, and decrypting the encrypted data object by using the decryption key to obtain the original information of the data object.
By means of the technical scheme, a alliance chain is constructed among business data centers, operation of a system is maintained together on the basis, a business data copy is hooked with a public chain, data maintenance cost can be reduced, data safety is guaranteed, original data are stored in an encrypted mode through a private interplanetary file cluster system, abstract information of the data, including a unique fingerprint sequence of the stored data, is stored by combining a block chain intelligent contract technology, safety management of the business data is achieved, and historical data can be traced back by means of the block chain technology and the interplanetary file system, so that the problem that the business data cannot be recovered is solved.
In addition, specifically, the business data information storage contract mainly records digital summary information of the business data center, including an interplanetary file system address, a number, a hash value, creation time, modification time and the like of the business data object; the business data entitlement control contract is primarily used to control the entitlement of a business data center. The business data sharing management contract mainly records data information shared by the business data centers, including data numbers, identities of the business data centers, sharing time and the like. One data number can be shared for access by multiple commercial data centers. When the identity of the commercial data center corresponding to the data number is-1, the data is completely open, and all users can directly acquire information; if the identifier is 0, the data is conditionally opened and can be accessed by all members in the federation center; if the identification is not less than 1, the data is private and can be accessed only by a data center with specified authority.
In addition, as shown in fig. 2, the operation steps of adding a data object are as follows:
first, the commercial data center generates a pair of random keys randkey (K)pubr，Kprir) The key is mainly used for encrypting the commercial data digest and the commercial data object;
second, using the private key KprirAnd encrypting the commercial data abstract, storing the encrypted commercial data abstract in an interplanetary file cluster system, signing information such as a hash value, a serial number of an encrypted attachment, a serial number of an encrypted commercial data object and the like, and sending the information to an intelligent contract through a service center for waiting for subsequent processing.
And thirdly, the business data information storage contract receives the request of the newly added data object, calls the business data authority control contract to recover the public key from the signature, compares the recovered public key with the secret key in the node information storage contract, and adds the mirror image of the information such as the business data object number, the abstract and the like in the contract if the verification is passed.
In summary, by means of the technical scheme of the invention, a federation chain is constructed between business data centers, the operation of the system is jointly maintained on the basis, the business data copy is linked with a public chain, the data maintenance cost can be reduced, the data security is guaranteed, original data is stored in an encrypted form through a private interplanetary file cluster system, and summary information of the data, including a unique fingerprint sequence of the stored data, is stored in combination with a block chain intelligent contract technology, so that the business data security management is realized, and by means of the block chain technology and the interplanetary file system, historical data can be traced back, so that the problem that the business data cannot be recovered is solved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A business data sharing model system based on a block chain is characterized by comprising a business data center module, a service center module, a alliance center module, a public block chain module and a private interplanetary file cluster module, wherein the business data center module is connected with the service center module through the public block chain module;
the business data center module is used as an important node of a business data sharing model to directly participate in a block chain center of the alliance, so that data protection, verification and sharing are realized;
the service center module is used for providing an intelligent contract and an interplanetary file system interface for the business data sharing model in an interface form;
the alliance center module is used for storing data information of the business data center module through an intelligent contract, wherein the data information comprises a digital identity and abstract information of the business data center module, the identity registration, recovery, protection and sharing of the business data center module are realized, and the identity registration, recovery, protection and sharing are regularly interacted with the public block chain module;
the public block chain module is used for periodically storing a database copy mirror image of the alliance center module so as to ensure the authenticity of the data of the alliance center module;
the private interplanetary file cluster module is used for storing original information of commercial data, realizing identity authentication of nodes and guaranteeing data security.
2. The blockchain-based business data sharing model system of claim 1, wherein the intelligent contracts include node information storage contracts, node information management contracts, and business data management contracts.
3. The blockchain-based business data sharing model system of claim 2, wherein the business data management contracts include business data information storage contracts, business data entitlement control contracts, and business data sharing management contracts.
4. The blockchain-based business data sharing model system of claim 3 wherein the business data center module further includes generating the business data center module identity including the steps of:
will public key KpubAnd basic information is disclosed to the alliance center module, the basic information comprises the address of the business data center module, meanwhile, a node is randomly entrusted to create a voting contract, and the node of the alliance center module participates in voting;
if the number of tickets is over half, the business data information storage contract saves the public key information of the business data center module,
an identity of the business data center module dcID is then generated for it and a business data information storage contract and a business data entitlement control contract are created, represented as triplets (dcID, CDSC, CDCC).
5. The blockchain-based business data sharing model system of claim 4 further comprising a rekeying contract comprising the steps of:
the business data center module regenerates a pair of keys<Kpubnew,Kprinew>Private key KprinewSelf-preservation;
the new public key is disclosed to the alliance center module, the secret key is reset, the identity of the business data center module is registered, and therefore the identity of the business data center module is attached, and a node is entrusted randomly to create a reset voting contract;
the whole alliance center module votes again, if the number of votes is more than half, the node information management contract resets the public key of the business data center module, and the public key is reset<Kpub,Kpri>Is replaced by<Kpubnew,Kprinew>。
6. The blockchain-based business data sharing model system of claim 1 further comprising data validation of the federation central module blockchain by the public blockchain module, comprising the steps of:
the business data center module signs the dcID and the data number to obtain sign (dcID, dataID), and sends the result to the service center module;
after receiving the message, the service center module obtains a latest alliance data block copy mapping from an alliance data protection contract in the public block chain module;
comparing and verifying the block information with the block information in the alliance center module;
if the verification is passed, the signature is sent to the intelligent contract for the next operation;
and if the verification fails, returning the data exception of the alliance center module.
7. The blockchain-based business data sharing model system of claim 1 further comprising the sharing of business data, comprising the steps of:
commercial digital center A uses private key AKprirNumbering dataID and dcID of data object to be sharedASigning to obtain signa(dataID,dcIDA) Sign is then sent through the service centre modulea(dataID,dcIDA) Sending to a business data sharing management contract;
after receiving the request, the business data sharing management contract calls the dcID pair of the business data authority control contractAChecking, and writing the checked result into a sharing sequence of the contract data object dataID after the checking is passed;
the business data center module B uses a private key BKprirFor dataID, dcIDBSigning to obtain signb(dataID,dcIDB) Sign is then sent through the service centre moduleb(dataID,dcIDB) Sending to a business data sharing management contract;
after receiving the request, the business data sharing management contract calls a business data authority control contract to check the authority of the business data center module B, the check means that the business data authority control contract has the reading authority of the data object, and the hash value and the fingerprint of the data object corresponding to the data object are read;
the commercial data center module B acquires the encrypted data object from the interplanetary file cluster system according to the acquired data object fingerprint, and simultaneously acquires the dataID and the dcIDBSending the data object to the commercial data center module A to acquire a decryption key of the data object;
after receiving the request of B, the business data sharing management contract checks the sharing record of the business data according to the received information, and if the sharing record is wrong, the sharing is failed; otherwise, if the sharing is true, the dcID is obtained from the node information management contractBCorresponding public key BKpubrAfter asymmetric encryption is carried out on the decryption key, the decryption key is sent to the B;
b uses the private key BKprirAnd decrypting the received message to obtain an original decryption key, and decrypting the encrypted data object by using the decryption key to obtain the original information of the data object.
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|---|---|---|---|---|
| CN114172735A (en) * | 2021-12-11 | 2022-03-11 | 中国人民解放军战略支援部队信息工程大学 | Double-chain mixed block chain data sharing method and system based on intelligent contract |
| CN114172735B (en) * | 2021-12-11 | 2023-07-14 | 中国人民解放军战略支援部队信息工程大学 | Double-chain hybrid block chain data sharing method and system based on intelligent contracts |
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