CN112861146A - Document distribution and effectiveness control system and method based on alliance block chain - Google Patents
Document distribution and effectiveness control system and method based on alliance block chain Download PDFInfo
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Abstract
The document distribution and effectiveness control system and method based on the block chain of the alliance, the central management server, is used for the registration and authority management of each alliance node; document storage, uploading, downloading and operation log management. The block chain core module is used for block creation, addition and query; recording the information of document chaining, publishing and signing operations; the document uplink module is used for uploading a document to be uplink to a central management server by the alliance node, and storing various information of the document in a block chain as a document primitive credential; the document publishing module is used for storing all items of information related to the document to be published in the block chain; and the document signing module is used for acquiring the document from the central management server, verifying the document consistency and storing signing and consulting information in the block chain. The invention realizes the control of the effectiveness of the document and the distribution version by the block chain distributed and stored in the local nodes of each party, and provides an effective means for paperless, anti-falsification and credential digitization of the document.
Description
Technical Field
The invention belongs to the technical field of document management and distribution, and particularly relates to a document distribution and validity control system and method based on a block chain of an alliance.
Background
Paperless office is an efficient and environment-friendly working mode, but is not commonly applied among units at present, and paper documents are still used in a large area due to multiple aspects. Taking the engineering construction field as an example, the engineering construction project has the cooperation of multiple parties such as owners, design, construction, supervision and the like, the technology and management files between participating units are transmitted electronically, so that the risk of consistency of versions and data exists, and the files cannot be traced, the paperless application in the engineering construction field is restricted, and huge manpower and cost waste is brought; and the digital achievements like the BIM model and the like can not realize paper delivery, and the technical difficulty exists in the application process for ensuring the consistency in the data circulation process. Although the traditional method using the PKI electronic signature can effectively ensure the information validity, because the electronic signature system is a centralized system, besides PDF and Word, the latter electronic file type does not support the writing of electronic signature information, the signed information is inevitably stored in a certain core related party (generally an owner) or a third-party platform, the authority of the information is questioned, the data security is also risky, manual intervention is needed, the operation flow is complex to implement, and obvious limitations also exist.
The block chain is a decentralized database in nature, and realizes the verification of information validity through point-to-point communication, a consensus mechanism and an encryption algorithm. The block chain of the alliance is a type of block chain established between alliances and establishing a preselected node, and therefore consensus among alliance bodies is achieved.
Disclosure of Invention
The invention provides a document distribution and validity control system and method based on a block chain of an alliance, which are distributed and stored in local nodes of all parties through the block chain, realize the control on the validity of a document and a distribution version and provide an effective means for paperless documents.
The technical scheme adopted by the invention is as follows:
the document distribution and effectiveness control system based on the block chain of the alliance comprises a central management server and a plurality of alliance nodes;
the central management server is used for registering and managing the authority of each alliance node; storing, uploading, downloading and managing operation logs of documents;
each alliance node comprises a block chain core module, a document uplink module, a document publishing module, a document signing module and the block chain core module, and the block chain core module is used for block creation, addition and query; recording the information of document chaining, publishing and signing operations;
the document uplink module is used for uploading a document to be uplink to a central management server by the alliance node, and storing various information of the document in a block chain as a document primitive credential;
the document publishing module is used for storing all items of information related to the document to be published in the block chain;
and the document signing module is used for acquiring the document from the central management server, verifying the document consistency and storing signing and consulting information in the block chain.
In the document uplink module, any alliance node uploads a document to be uplink to a central management server, a new document uplink block is generated in a block chain, the new block records the ID, digital summary (MD5, SHA128/256), version, publisher, distribution time, randomly generated document password and the like of the document, time stamp is printed, the document is encrypted by using a public key after combination, common identification is achieved through the block chain, and finally the document information to be uplink is permanently stored in the block chain to serve as original document evidence.
In the document issuing module, an issuer determines a target object to be issued of a document to be issued, combines a public key of a receiver, an ID (identity) of a corresponding document, a digital abstract, a document password and the like, encrypts the public key of the receiver, stores the encrypted public key in a block object, stamps a timestamp to form a new document issuing block, adds the block to a block chain, and permanently stores document information to be issued in the block chain after issuing and achieving consensus.
The document signing module acquires signing task information to be looked up of a local alliance node through continuous addition and synchronous block information of a block chain, specific document ID, digital summary and document password information are obtained through public key matching, the document is decrypted through a private key, an entity document is acquired from a central management server, the document is decrypted through a password, document version consistency is verified through the digital summary, the document is looked up after verification is consistent, a signing and looking up result is added into the block chain, after consensus is achieved, document signing information is permanently stored in the block chain as a new document signing block, and signing states and information of a current user to the document are recorded.
The document signing module comprises a document verification module, wherein digital abstract information of any document is acquired in the document verification module, local verification is carried out through block chain data, and information such as basic information, version, release time, a publisher, a timestamp and the like of the document can be consulted after verification is passed; verification fails, indicating that the document has not been linked or tampered with. The invention relates to a document distribution and effectiveness control system and method based on an alliance blockchain, which are distributed and stored in local nodes of participating parties through the blockchain and are suitable for achieving information transmission and consensus among engineering construction, supply chain and other parties, thereby realizing the control on the effectiveness of engineering documents and distribution versions, providing an effective means for paperless engineering construction, and having wide application value in other similar scenes or industries.
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FIG. 1 is a schematic diagram of the system of the present invention.
Detailed Description
The document distribution and validity control system based on the federation blockchain as shown in FIG. 1 comprises a central management server, a plurality of federation nodes.
The central management server is used for registering and managing the authority of each alliance node; document storage, uploading, downloading and operation log management. Each alliance node comprises a blockchain core module, a document uplink module, a document publishing module, a document signing module,
The block chain core module is used for block creation, addition and query; and recording the information of the document chaining, publishing and signing operations.
The document uplink module is used for uploading a document to be uplink to a central management server by the alliance node, and storing various information of the document in a block chain as a document primitive credential;
the document publishing module is used for storing all items of information related to the document to be published in the block chain;
and the document signing module is used for acquiring the document from the central management server, verifying the document consistency and storing signing and consulting information in the block chain.
In the document uplink module, any alliance node encrypts a document to be uplink by using a randomly generated document password and uploads the document to a central management server, a new block is generated in a block chain, the new block records ID digital summary, version, publisher, distribution time, document password and the like of the document, a timestamp is printed, the document is encrypted by using a public key after combination, common identification is achieved through the block chain, and finally document information to be uplink is permanently stored in the block chain to serve as document originality evidence.
In the document issuing module, an issuer determines a target object to be issued of a document to be issued, combines a public key of a receiver, an ID (identity) of a corresponding document, a digital abstract, a document password and the like, encrypts the public key of the receiver, stores the encrypted public key in a block object, stamps a timestamp, adds the encrypted public key into a block chain, and permanently stores document information to be issued in the block chain after issuing and achieving consensus.
The document signing module acquires signing task information to be looked up of a local alliance node through continuous addition and synchronous block information of a block chain through public key matching, specific document ID, digital summary and passwords are decrypted through a private key, an entity document is acquired from a central management server, the document is decrypted through the passwords, version consistency of the document is verified, the document is looked up after the document is verified to be consistent, signing and looking up results are added into the block chain, after consensus is achieved, the document signing information is permanently stored in the block chain, and signing states and information of current users to the document are recorded.
The document signing module comprises a document verification module, wherein digital abstract information of any document is acquired in the document verification module, local verification is carried out through block chain data, and information such as basic information, version, release time, a publisher, a timestamp and the like of the document can be consulted after verification is passed; verification fails, indicating that the document has not been linked or tampered with.
A document distribution and effectiveness control method based on a block chain of alliances comprises the following steps:
step 1: establishing a central management server to realize registration and authority management of all the alliance nodes, uploading and downloading of documents and operation log management;
step 2: each alliance user applies for registration to a central management server, client software is installed, an alliance node is established, each alliance node creates a key pair of the alliance user, the key pair comprises a private key and a public key, the private key is reserved in the hand of a local user, and the public key serves as a unique identifier of the current user and is registered to the central management server;
and step 3: a alliance user selects a document to be linked in client software, randomly generates an encryption password of the document, submits information such as a document entity, a corresponding digital abstract and the like to a central management server, constructs a document uploading operation block containing document ID, the digital abstract and symmetric encryption password information through a document linking module, encrypts non-public contents by using a public key of an operation node, and broadcasts the encrypted document to other nodes for verification;
in the step 3: the document ID is used for controlling the downloading of the document, the password is used for encrypting and decrypting the document entity, and only a user authorized to obtain the document ID and the document password can check the original document content;
in the step 3: and each other node receives the broadcast information, executes a Byzantine fault-tolerant PBFT algorithm, and submits the broadcast information to a block chain after reaching consensus, so that the uplink operation of the document is effective.
And 4, step 4: the alliance user executes document publishing operation on the chained document, randomly generates an access control identification by specifying the public key information of a target object to be published, encrypts the information such as a document digital abstract and the like after combining the information, writes the information into a document publishing operation block together, broadcasts the information to other nodes for verification, and synchronously writes data into a central management server.
In the step 4: and each other node receives the broadcast information, executes a Byzantine fault-tolerant PBFT algorithm, and submits the broadcast information to a block chain after reaching consensus, so that the issuing operation is effective.
And 5: the client software of the alliance node acquires a document issued to the client software by a third party through public key matching through issuing block information in the block chain node, decrypts the document by using a private key, acquires an original file symmetric encryption password and document digital summary information, and executes document downloading operation; downloading a corresponding document from a central management server, decrypting the document by using a control code, verifying the downloaded document in block chain data according to digital abstract information of the document, and if the verification is passed, acquiring information such as the version, the sender, the sending time and the like of the document and referring the information; creating operation blocks for downloading signing information, and broadcasting the operation blocks to each block chain node for verification;
in the step 5: and each node receives the broadcast information, executes a Byzantine fault-tolerant PBFT algorithm, and submits the broadcast information to a block chain after reaching consensus, so that the signing operation takes effect.
Step 6, the user can extract the digital abstract information of any document at any time and verify the digital abstract information in client software, and the user can check the related information if the verification is passed; if the verification is not passed, the document is not linked or the document is tampered, and a prompt is given.
TABLE 1 Block node types and memory Contents
Example (b):
the method takes engineering construction participating parties as examples, and please supplement the embodiment of document distribution.
The related party of a project comprises an owner A, a design unit B, a supervision unit C, construction units D1, D2 and the like. The owner establishes a central management server, each unit respectively maintains a alliance node, and a set of PKI is generated and maintained, wherein a private key is stored on own hand, and a public key is registered in the central management server and can be broadcasted to all parties related to the alliance node; the central management server is responsible for performing authorization and authentication on the alliance nodes, and only the allowed nodes (related parties) can join the alliance chain after being confirmed by the central management node (owner).
Assume that design unit B is to send a document to owner a and construction unit D2. The operation flow is as follows:
1. the design unit B executes the chain linking operation of the document, randomly generates a symmetric encryption password to encrypt the document, uploads the document to a central server, records the document ID, the digital abstract and the document password in a block chain after encrypting through a public key, and achieves consensus in each alliance node;
2. the design unit B executes document distribution operation, acquires uplink information of the document from the chain, decrypts the uplink information by using a private key to acquire a document ID, a digital abstract and a symmetric encryption password, encrypts the information such as the document ID and the document password by using public keys of the owner A and the construction unit D2 respectively, forms two blocks together with the information such as the digital abstract and the like, records the two blocks in a block chain, and achieves consensus in each alliance node;
3. and the owner A searches the block information of the local alliance node, and if the owner A finds that the public key of the receiver is the document release record of the owner A, the owner A executes the document signing operation: decrypting the block content by using a private key, acquiring a document ID and a document password, downloading a document from a central server, decrypting the document and verifying by using a digital abstract, creating a document signing-in block after the verification is successful, adding the document signing-in block into a block chain, and achieving consensus in each alliance node;
4. the operation of the construction unit D2 is the same;
5. the design unit B can retrieve the signing records of the owner A and the construction unit D2 from the block chain;
6. so far, the uploading, publishing and signing operations of the document are completely recorded in a block chain, and the design unit B and the construction unit D1 cannot acquire information such as the ID, the password and the like of the document and cannot check the document because the first-closing information is not mastered; thus, the encryption and authentication of the document information are realized; document uploading, distribution and receipt credentials are prevented from being changed, and related records can be inquired and retrieved at any time.
Claims (8)
1. The document distribution and effectiveness control system based on the block chain of the alliance comprises a central management server and a plurality of alliance nodes; the method is characterized in that: the central management server is used for registering and managing the authority of each alliance node; storing, uploading, downloading and managing operation logs of documents;
each alliance node comprises a blockchain core module, a document uplink module, a document publishing module, a document signing module,
The block chain core module is used for block creation, addition and query; recording the information of document chaining, publishing and signing operations;
the document uplink module is used for uploading a document to be uplink to a central management server by the alliance node, and storing various information of the document in a block chain as a document primitive credential;
the document publishing module is used for storing all items of information related to the document to be published in the block chain;
and the document signing module is used for acquiring the document from the central management server, verifying the document consistency and storing signing and consulting information in the block chain.
2. A federation blockchain-based document distribution and validation control system as claimed in claim 1 wherein: in the document uplink module, any alliance node encrypts a document to be uplink by using a randomly generated document password and uploads the document to a central management server, a new document uplink block is generated in a block chain, the new block records document ID, digital summary, version, publisher, distribution time, document password and the like, a timestamp is printed, the document to be uplink is encrypted by using a public key after combination, common identification is achieved through the block chain, and finally document information to be uplink is permanently stored in the block chain to serve as document originality evidence.
3. A federation blockchain-based document distribution and validation control system as claimed in claim 1 wherein: in the document issuing module, an issuer determines a target object to be issued of a document to be issued, combines a public key of a receiver, a corresponding document ID, a digital abstract, a document password and the like, encrypts the object by using the public key of the receiver, stores the encrypted object in a document distribution block object, stamps a timestamp, adds the object to a block chain, and permanently stores document information to be issued in the block chain after issuing and achieving consensus.
4. A federation blockchain-based document distribution and validation control system as claimed in claim 1 wherein: the document signing module acquires signing task information to be looked up of a local alliance node through public key matching, decrypts specific document ID, digital summary and password through a private key, acquires an entity document from a central management server by using the document ID, decrypts by using the password, verifies the version consistency of the document by using the digital summary, looks up after the verification is consistent, packs signing and looking up results as a document signing block to be added into a block chain, permanently stores the document signing information in the block chain after consensus is achieved, and records signing states and information of current users to the document.
5. A federation blockchain-based document distribution and validation control system as claimed in claim 1 wherein: the document signing module comprises a document verification module, wherein digital abstract information of any document is acquired in the document verification module, local verification is carried out through block chain data, and information such as basic information, version, release time, a publisher, a timestamp and the like of the document can be consulted after verification is passed; verification fails, indicating that the document has not been linked or tampered with.
6. A document distribution and effectiveness control method based on a block chain of alliances is characterized by comprising the following steps:
step 1: establishing a central management server to realize registration and authority management of all the alliance nodes, uploading and downloading of documents and operation log management;
step 2: each alliance user applies for registration to a central management server, client software is installed, an alliance node is established, each alliance node creates a key pair of the alliance user, the key pair comprises a private key and a public key, the private key is reserved in the hand of a local user, and the public key serves as a unique identifier of the current user and is registered to the central management server;
and step 3: a federation user selects a document to be linked in client software, randomly generates a symmetric encryption password of the document, submits information such as a document entity and a corresponding digital abstract to a central management server, constructs a document uploading operation block containing document ID, the digital abstract and the symmetric encryption password information through a document linking module, encrypts non-public contents by using a public key of an operation node, and broadcasts the encrypted document to other nodes for verification;
and 4, step 4: the alliance user executes document publishing operation on the chained document, randomly generates an access control identification by specifying public key information of a target object to be published, encrypts the information after combining document digital abstract and the like, writes the information into a document publishing operation block together, broadcasts the information to other nodes for verification, and synchronously writes data into a central management server;
and 5: the client software of the alliance node acquires a document issued to the client software by a third party through public key matching through issuing block information in the block chain node, decrypts the document by using a private key, acquires an original file symmetric encryption password and document digital summary information, and executes document downloading operation; downloading a corresponding document from a central management server, decrypting the document by using a control code, verifying the downloaded document in block chain data according to digital abstract information of the document, and if the verification is passed, acquiring information such as the version, the sender, the sending time and the like of the document and referring the information; creating operation blocks for downloading signing information, and broadcasting the operation blocks to each block chain node for verification;
step 6, the user can extract the digital abstract information of any document at any time and verify the digital abstract information in client software, and the user can check the related information if the verification is passed; if the verification is not passed, the document is not linked or the document is tampered, and a prompt is given.
7. The federation blockchain-based document distribution and validation control method of claim 6, wherein: in the step 3: the document ID is used for controlling the downloading of the document, the document password is used for encrypting and decrypting the document entity, and only a user authorized to acquire the document ID and the document password can view the original file content.
8. The federation blockchain-based document distribution and validation control method of claim 6, wherein: in the step 3: and each other node receives the broadcast information, executes a Byzantine fault-tolerant PBFT algorithm, and submits the broadcast information to a block chain after reaching consensus, so that the uplink operation of the document is effective.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116389508A (en) * | 2023-03-28 | 2023-07-04 | 山东出版数字融合产业研究院有限公司 | Multi-center digital content distribution method and system based on alliance chain |
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| CN110417781A (en) * | 2019-07-30 | 2019-11-05 | 中国工商银行股份有限公司 | File encryption management method, client and server based on block chain |
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| CN110417781A (en) * | 2019-07-30 | 2019-11-05 | 中国工商银行股份有限公司 | File encryption management method, client and server based on block chain |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116389508A (en) * | 2023-03-28 | 2023-07-04 | 山东出版数字融合产业研究院有限公司 | Multi-center digital content distribution method and system based on alliance chain |
| CN116389508B (en) * | 2023-03-28 | 2023-10-03 | 山东出版数字融合产业研究院有限公司 | Multi-center digital content distribution method and system based on alliance chain |
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