CN112835612A - Electronic document version management method and device based on block chain - Google Patents
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Abstract
The invention discloses an electronic document version management method and device based on a block chain, which is implemented by a block chain network consisting of a plurality of nodes, wherein the electronic document version management is carried out based on the block chain, a user verifies certificate signature information of a document modifier by a client while uploading a document, and stores, deletes, modifies and verifies the electronic document version, and the version number of each modification of the document corresponds to a transaction hash value, a document hash value and the hash value of the document in an interplanetary file system one by one. An electronic document version management device based on a block chain is used for terminal equipment corresponding to a current operator. The version number of each modification of the document is in one-to-one correspondence with the hash value of transaction, the hash value of the document and the hash value of the document in an interplanetary file system, so that the uniqueness of the document is ensured, the consistency of the version of the document and the document is ensured, and the safety and controllability of the document are finally ensured.
Description
Technical Field
The present invention relates to a method and an apparatus, and in particular, to a block chain-based method and an apparatus for managing electronic document versions.
Background
The block chain is used as a bottom layer implementation technology of the bit currency system and is used for recording the history of bit currency transactions, the block chain data is provided with a time stamp, a common identification mechanism is used for joint verification and recording of nodes, the block chain has non-tamper property and non-counterfeit property, the block chain is one of the most reliable data storage modes in existence, and the block chain is widely applied to various data notarization and audit scenes.
The sudden appearance of blockchain technology over the past few years has quickly demonstrated advantages in electronic document management, and the natural advantages of blockchain technology decentralization, traceability, programmability, and non-falsification are well suited to the needs of electronic document authenticity management. Due to the technical advantages that the blockchain cannot be tampered with due to the decentralization of management and the record of the process, the blockchain plays a wide role in the fields of electronic money, electronic government affairs, intelligent medical treatment and the like.
The version is a snapshot for recording each optional state of a specific object, and the task of version management is to record and maintain the history evolution process of the object; the document version management is a process for locally improving the same file and recording, tracking, maintaining and controlling the change condition of the same file. The document version management scheme provided by the existing document service provider is a centralized storage scheme provided by a self cloud server, is used for a software system for document management and knowledge management, and solves the problems of document management, uncontrollable document and the like.
When documents are more and more, the centralized server is more and more heavily loaded, resources required to play are more and more, and once the shutdown is caused, unnecessary play is caused to a document user; and the document version information is stored in a centralized server, once the database is attacked, the relevant information of the document is tampered, the document itself can be lost, and a lot of losses are generated for company individuals. The commercial document system provided by the existing company provides functions of document storage, version management and the like for company individuals based on a centralized server, and when the number and the size of documents become larger and larger, the pressure of the server is increased steeply, and the maintenance work of the server becomes heavier and heavier.
The prior application number is 202010588679.6 entitled a software package version verification method and related devices acquire a first hash value of a software package from a block chain, calculate a second hash value of the acquired software package at the same time, compare the two hash values, and if the two hash values are the same, determine that the software package is not tampered. And meanwhile, providing a software package version query API interface to verify the first hash. And after the software package is modified, uploading the modified software package to a block chain, and recording a first hash value of the software package. The method uploads the software package to the block chain, and when the size of the software package file is large, the operation burden of the block chain is increased undoubtedly. The technical method can only provide the storage and the version verification of the document, cannot provide the control of the whole life cycle of the document, and cannot ensure the safety of the user authentication without providing the user authentication.
The existing application number is 201811513677.X, and the name is that a system overall architecture is established by a block chain-based electronic document authenticity guarantee method, which includes: each service system is embedded, accessed into layer, block chain network, management platform; establishing a system operation flow, comprising: establishing an interactive operation flow among a service department, a Software Development Kit (SDK), an authentication center and block link points; the process of establishing the authenticity verification of the electronic document comprises the following steps: and sending a verification request data packet to the SDK by the service department system, signing the main body ID and the verification request by the SDK by using a Certificate Authority (CA) private key of the service department, calling a data decryption interface by the SDK, submitting the encrypted data to an authentication center for decryption, obtaining decrypted data, and checking the consistency of the decrypted data. The method provides that the ca authentication center verifies the document modifier, but still cannot control the document version number in a full life cycle and a full flow.
The prior application number is 201910513064.4, which is named as a document anti-tampering method based on a fabric alliance chain, performs document protection based on the fabric alliance chain, and performs operations of saving, deleting, modifying and verifying a document in a document management system. Uploading the document to the ipfs, returning a hash value, and calculating the hash value of the local document; and making the hash value returned by the ipfs, the locally calculated hash value and the important information of the document into document DNA, and storing the document DNA to the fabric alliance chain. The intelligent contract of the fabric automatically saves the name, the signature and the information storage time of the node into the fabric network. And the verification operation is to compare the hash value of the local document to be verified with the hash value in the fabric network, and if the two hash values are consistent, the two hash values are not tampered. The method only establishes the relation between the meta information of the document and the document in an isolated way, does not combine the whole process from the creation of the document to the final determined state, and cannot embody the circulation process of the whole life cycle of the document.
Disclosure of Invention
In order to solve the defects of the technology, the invention provides an electronic document version management method and device based on a block chain.
In order to solve the technical problems, the invention adopts the technical scheme that: a block chain-based electronic document version management method is implemented by a block chain network consisting of a plurality of nodes, electronic document version management is carried out on the basis of the block chain, a user verifies certificate signature information of a document modifier while uploading a document, and saves, deletes, modifies and verifies the electronic document version, and the version number of each modification of the document corresponds to a hash value of a transaction, a hash value of the document and the hash value of the document in an interplanetary file system one by one.
Furthermore, the whole life cycle of an electronic document from creation to modification to final confirmation is finished, the metadata of all modified electronic documents in the electronic document from creation to final confirmation and including the metadata and the summary information of all modified electronic documents in the middle are recorded in a block chain and an interstellar file system, and the guarantee of the authenticity of the electronic document and the control and management of the versions of all electronic documents are realized; the electronic document version management method includes the steps of:
s1, the client sends a document creating request to the block chain network to generate document initial version information, namely first version information;
s2, the client generates a unique document code and a first document version number;
s3, uploading the document to an interplanetary file system by the client, and storing the document in a distributed manner;
s4, the client receives a first download hash address corresponding to the first version information of the file returned from the interplanetary file system;
s5, the client stores the received document summary and the first document version number in the block chain network;
s6, the block chain network returns the first response data to the client;
s7, the client sends a document modification request to the block chain network to generate document modification version information, namely second version information;
s8, uploading the document to an interplanetary file system by the client, and storing the document in a distributed manner;
s9, the client receives a second download hash address corresponding to the second version information of the file returned from the interplanetary file system;
s10, the client stores the received document summary and the second document version number in the block chain network;
s11, the block chain network returns the second response data to the client;
s12, the client sends a document final modification request to the block chain network to generate document final version information, namely third version information;
s13, the client stores the received document summary and the third document version number in the blockchain network;
and S14, the blockchain network returns the third response data to the client.
Further, the client includes:
a transmission unit: the system comprises a transaction proposal used for initiating a document submission to a blockchain network, wherein the transaction proposal sends an intelligent contract with the transaction play call to an endorsement node in the blockchain network and sends qualified proposal information to a sequencing node;
a receiving unit: and after the endorsement node receives the transaction proposal, verifying the signature of the submitter, determining whether the submitter has the authority to execute the operation, simulating and executing an intelligent contract according to the endorsement simulation strategy, and receiving the simulation execution result and the respective CA certificate signature.
Further, the blockchain network is an alliance-chain blockchain network, which is an alliance composed of a plurality of trusted organizations or corporate departments.
Further, the representation of the document unique code is as follows: the unique code is a universal unique identification code or a unique identifier generated by other methods; file download hash address a string of file hash values beginning with Qm, which is also the file download address, is generated by the interplanetary file system.
Further, the document abstract is file information generated by the interplanetary file system, and a last block hash value obtained by the client; when the document is updated every time, the document version number is increased on the basis of the last document version number; the response data is a transaction timestamp, a transaction hash value and a generated block hash value after the request information of the client is correctly responded by the blockchain network.
An electronic document version management device based on a block chain is used for a terminal device corresponding to a current operator, and comprises the following components:
the file hash value acquisition module is used for acquiring the hash value of the file by the client; the document abstract information acquisition module is used for carrying out Hash calculation and document information generation on the file; the version control module is used for calculating the first document version number of the file and generating the second document version number, and is used for calculating the second document version number of the file and generating the third document version number;
the method comprises the steps of obtaining a hash value of a current document through a document hash value obtaining module, checking whether a current version document exists on a block chain network by using a unique code of the document and the hash value of the document, returning response information that the current document version exists if the current version document exists, adding a current version number of the document to the current version by using a version control module if the current version document does not exist, obtaining summary information of a newly added version of the document by using a document summary information obtaining module, and storing the new version number of the document and the updated document summary information into the block chain network.
Further, the blockchain has an API interface for looking up the document hash value, and the document hash value obtaining module is specifically configured to obtain the document hash value through the API interface for looking up the document hash value.
Further, the blockchain has an API interface for generating document summary information, and the document summary information obtaining module is specifically configured to obtain the summary value of the document through the API interface for obtaining the document summary information.
Further, the blockchain has an API interface for calculating and generating a document version number, and the version control module is specifically configured to obtain the version number of the document through the API interface for calculating and generating the document version number.
By utilizing the technical advantages of decentralized block chain and non-falsification of process records, the block chain technology is introduced into the field of electronic document version management research and is applied in practice, and the functional advantages of smoothness, credibility and safety are realized. According to the invention, by constructing the block chain-based electronic document version management method, the document information is recorded by the method, and the document is stored in the interplanetary file system, so that the distributed storage of the document is realized, the modification record of the document can be tracked in a full version manner, the whole life cycle of the document is ensured to be within a controllable range, the risk of tampering is reduced, and the pressure of a server is reduced. The version number of each modification of the document is in one-to-one correspondence with the hash value of transaction, the hash value of the document and the hash value of the document in an interplanetary file system, so that the uniqueness of the document is ensured, the consistency of the version of the document and the document is ensured, and the safety and controllability of the document are finally ensured.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
The invention provides an electronic document version management method based on a block chain. The electronic document is a complete and non-separable process of movement from formation handling, delivery release, filing and transfer, management protection, to destruction or permanent storage, and at each stage, intermediate data, i.e. a voucher record (which is usually stored in a metadata manner in an electronic document formation and management system) affecting the authenticity of the electronic document is generated.
A block chain based electronic document version management method is implemented by a block chain network consisting of a plurality of nodes, is used for terminal equipment corresponding to a current operator, performs electronic document version management based on the block chain, and when a user uploads a document, the user verifies certificate signature information of a document modifier by a client side, (wherein the certificate signature information is issued by a CA (certificate Authority)), saves, deletes, modifies and verifies the electronic document version, and the version number of each modification of the document corresponds to a hash value of a transaction, a document hash value and a hash value of the document in an interplanetary file system one by one.
The whole life cycle of an electronic document from creation to modification to final confirmation is finished, the metadata of all modified electronic documents in the electronic document from creation to final confirmation and the metadata and the respective abstract information of all modified electronic documents in the electronic document are recorded in a block chain and an interplanetary file system, and the guarantee of the authenticity of the electronic document and the control and management of each electronic document version are realized; the management of the whole life cycle of the electronic document is realized through three stages of document creation, document modification and final document finalization.
The electronic document version management method includes the steps of:
s1, the client sends a document creating request to the block chain network to generate document initial version information, namely first version information; the initial version information includes a document unique ID, an initial version number.
S2, the client generates a unique document code and a first document version number;
s3, uploading the document to an interplanetary file system by the client, and storing the document in a distributed manner;
s4, the client receives a first download hash address corresponding to the first version information of the file returned from the interplanetary file system;
s5, the client stores the received document summary and the first document version number in the block chain network;
s6, the block chain network returns the first response data to the client;
s7, the client sends a document modification request to the block chain network to generate document modification version information, namely second version information; the modified version information comprises a document unique ID, a last modified document version number and a current modified document version number.
S8, uploading the document to an interplanetary file system by the client, and storing the document in a distributed manner;
s9, the client receives a second download hash address corresponding to the second version information of the file returned from the interplanetary file system;
s10, the client stores the received document summary and the second document version number in the block chain network;
s11, the block chain network returns the second response data to the client;
s12, the client sends a document final modification request to the block chain network to generate document final version information, namely third version information; the final version information includes a document unique ID, a last modified document version number, and a final document version number.
S13, the client stores the received document summary and the third document version number in the blockchain network;
and S14, the blockchain network returns the third response data to the client.
Wherein, the client includes:
a transmission unit: the system comprises a block chain network, a transaction proposal, a sorting node and a file processing node, wherein the transaction proposal is used for initiating a document submission to the block chain network, sending an intelligent contract to be called with the transaction to the endorsement node in the block chain network, and sending qualified proposal information to the sorting node;
a receiving unit: and after the endorsement node receives the transaction proposal, verifying the signature of the submitter, determining whether the submitter has the authority to execute the operation, simulating and executing an intelligent contract according to the endorsement simulation strategy, and receiving the simulation execution result and the respective CA certificate signature.
The block chain network is an alliance chain block chain network and is an alliance formed by a plurality of credible organizations or company departments.
The expression form of the document unique code is as follows: the unique code is a universal unique identification code (UUID) or a unique identifier generated by other methods;
the file downloading hash address generates a file hash value character string beginning with Qm by the interplanetary file system, and the hash value is also the file downloading address.
The file abstract is file information generated by the interplanetary file system, and a last block hash value obtained by the client;
when the document is updated every time, the document version number is increased on the basis of the last document version number;
the response data is a transaction timestamp, a transaction hash value and a generated block hash value after the request information of the client is correctly responded by the blockchain network.
An electronic document version management device based on a block chain is used for a terminal device corresponding to a current operator, and comprises the following components:
the file hash value acquisition module is used for acquiring the hash value of the file by the client; the document abstract information acquisition module is used for carrying out Hash calculation and document information generation on the file; the version control module is used for calculating the first document version number of the file and generating the second document version number, and is used for calculating the second document version number of the file and generating the third document version number;
the method comprises the steps of obtaining a hash value of a current document through a document hash value obtaining module, checking whether a current version document exists on a block chain network by using a unique code of the document and the hash value of the document, returning response information that the current document version exists if the current version document exists, adding a current version number of the document to the current version by using a version control module if the current version document does not exist, obtaining summary information of a newly added version of the document by using a document summary information obtaining module, and storing the new version number of the document and the updated document summary information into the block chain network.
The block chain is provided with an API (application programming interface) for searching the document hash value, and the document hash value acquisition module is specifically used for acquiring the document hash value through the API for searching the document hash value.
The blockchain has an API interface for generating document summary information, and the document summary information obtaining module is specifically configured to obtain a summary value of the document through the API interface for obtaining the document summary information.
The block chain is provided with an API interface for calculating and generating a document version number, and the version control module is specifically used for acquiring the version number of the document through the API interface for calculating and generating the document version number.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.
Claims (10)
1. A block chain-based electronic document version management method, which is implemented by a block chain network consisting of a plurality of nodes, is characterized in that: the electronic document version management is carried out based on the block chain, when a user uploads a document, the client verifies certificate signature information of a document modifier, the electronic document version is stored, deleted, modified and verified, and the version number of each modification of the document corresponds to the hash value of a transaction, the hash value of the document and the hash value of the document in an interplanetary file system one by one.
2. The block chain-based electronic document version management method according to claim 1, characterized in that: the whole life cycle of an electronic document from creation to modification to final confirmation is finished, the metadata of all modified electronic documents in the electronic document from creation to final confirmation and the metadata and the respective abstract information of all modified electronic documents in the electronic document are recorded in a block chain and an interplanetary file system, and the guarantee of the authenticity of the electronic document and the control and management of each electronic document version are realized; the electronic document version management method includes the steps of:
s1, the client sends a document creating request to the block chain network to generate document initial version information, namely first version information;
s2, the client generates a unique document code and a first document version number;
s3, uploading the document to an interplanetary file system by the client, and storing the document in a distributed manner;
s4, the client receives a first download hash address corresponding to the first version information of the file returned from the interplanetary file system;
s5, the client stores the received document summary and the first document version number in the block chain network;
s6, the block chain network returns the first response data to the client;
s7, the client sends a document modification request to the block chain network to generate document modification version information, namely second version information;
s8, uploading the document to an interplanetary file system by the client, and storing the document in a distributed manner;
s9, the client receives a second download hash address corresponding to the second version information of the file returned from the interplanetary file system;
s10, the client stores the received document summary and the second document version number in the block chain network;
s11, the block chain network returns the second response data to the client;
s12, the client sends a document final modification request to the block chain network to generate document final version information, namely third version information;
s13, the client stores the received document summary and the third document version number in the blockchain network;
and S14, the blockchain network returns the third response data to the client.
3. The block chain-based electronic document version management method according to claim 2, characterized in that: the client comprises:
a transmission unit: the system comprises a block chain network, a transaction proposal, a sorting node and a file processing node, wherein the transaction proposal is used for initiating a document submission to the block chain network, sending an intelligent contract to be called with the transaction to the endorsement node in the block chain network, and sending qualified proposal information to the sorting node;
a receiving unit: and after the endorsement node receives the transaction proposal, verifying the signature of the submitter, determining whether the submitter has the authority to execute the operation, simulating and executing an intelligent contract according to the endorsement simulation strategy, and receiving the simulation execution result and the respective CA certificate signature.
4. The block chain-based electronic document version management method according to claim 3, characterized in that: the blockchain network is an alliance chain blockchain network, which is an alliance composed of a plurality of trusted organizations or company departments.
5. The block chain-based electronic document version management method according to claim 4, characterized in that: the expression form of the document unique code is as follows: the unique code is a universal unique identification code or a unique identifier generated by other methods; the file downloading hash address generates a file hash value character string beginning with Qm by the interplanetary file system, and the hash value is also the file downloading address.
6. The block chain-based electronic document version management method according to claim 5, characterized in that: the file abstract is file information generated by an interplanetary file system, and a last block hash value obtained by a client; when the document is updated every time, the document version number is increased on the basis of the last document version number; the response data is a transaction timestamp, a transaction hash value and a generated block hash value after the request information of the client is correctly responded by the blockchain network.
7. An electronic document version management device based on a block chain is characterized in that: the device is used for the terminal equipment corresponding to the current operator, and comprises the following steps:
the file hash value acquisition module is used for acquiring the hash value of the file by the client; the document abstract information acquisition module is used for carrying out Hash calculation and document information generation on the file; the version control module is used for calculating the first document version number of the file and generating the second document version number, and is used for calculating the second document version number of the file and generating the third document version number;
the method comprises the steps of acquiring a hash value of a current document through a document hash value acquisition module, inquiring whether a document of a current version exists on a block chain network by using a unique code of the document and the hash value of the document, returning response information that the version of the current document exists if the document of the current version exists, adding the current version number of the document to the current version by using a version control module if the document of the current version does not exist, acquiring abstract information of a newly added version of the document by using a document abstract information acquisition module, and storing the new version number of the document and the updated document abstract information into the block chain network.
8. The block chain-based electronic document version management apparatus according to claim 7, wherein: the block chain is provided with an API (application programming interface) for inquiring the document hash value, and the document hash value acquisition module is specifically used for acquiring the document hash value through the API for inquiring the document hash value.
9. The block chain-based electronic document version management apparatus according to claim 8, wherein: the block chain is provided with an API interface for generating document abstract information, and the document abstract information acquisition module is specifically used for acquiring the abstract value of the document through the API interface for acquiring the document abstract information.
10. The block chain-based electronic document version management apparatus according to claim 9, wherein: the block chain is provided with an API interface for calculating and generating a document version number, and the version control module is specifically used for acquiring the version number of the document through the API interface for calculating and generating the document version number.
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