CN111475836B - File management method and device based on alliance block chain - Google Patents
File management method and device based on alliance block chain Download PDFInfo
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- CN111475836B CN111475836B CN202010249132.3A CN202010249132A CN111475836B CN 111475836 B CN111475836 B CN 111475836B CN 202010249132 A CN202010249132 A CN 202010249132A CN 111475836 B CN111475836 B CN 111475836B
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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
- G06F21/602—Providing cryptographic facilities or services
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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
- G06F21/604—Tools and structures for managing or administering access control systems
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2107—File encryption
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2141—Access rights, e.g. capability lists, access control lists, access tables, access matrices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The invention discloses a file management method and device based on a alliance blockchain, wherein the method comprises the following steps: the method comprises the steps of receiving an identification document submitted during user registration, and storing the identification document to a file management center after the identification document is checked by the file management center; after carrying out hash operation and user signature processing on the uploaded original file, sending a first file fingerprint and a first file fingerprint signature to a blockchain network center for registration, uploading the integrated file information generated by merging to a file management center, and after passing the consistency verification of the file, transferring the original file to a storage node of the file management center; and after receiving the file retrieval application sent by the user, sequentially carrying out identity validity verification, file retrieval authority inquiry and file integrity verification, and finally completing file retrieval. The invention can realize the integrity check of the file data in the file management system, ensure that the file inquired by the user is the file originally stored, and improve the credibility of the file.
Description
Technical Field
The invention relates to the technical field of blockchains, in particular to a file management method and device based on a alliance blockchain.
Background
With the rapid development of the internet, cloud computing and mobile equipment, the data scale is rapidly increased, a large number of electronic files with preservation value are generated, and further the construction of a digital file system becomes a necessary development trend of file work. By using the electronic file management system, a convenient and quick service mode and a convenient and quick way can be provided for file information inquiry, a foundation is laid for realizing file information resource sharing, and conditions are created for electronic government affairs and paperless office information reception. Through the digital files, paper and other file originals in various forms are effectively protected, so that management is enhanced and the files are convenient to use.
However, in the course of research and practice of the prior art, the present inventors have found that, at present, the archive management system in each unit generally adopts a centralized database technical scheme, and the conventional centralized archive management system has the following drawbacks: on the one hand, the different file management centers manage the file information which is respectively responsible, and no related data of files stored in other file centers exists, namely, the data of the different file management centers are independent, and the storage process of the files is opaque. On the other hand, since all files must be uploaded and saved by the centralized file management center, the related file manager will have the read-write authority of the corresponding files, which may lead to the possibility of the files being modified at any time. In the relatively independent and centralized mode, even if the archive is modified, the user can hardly find that the archive is modified, and the integrity of the archive cannot be ensured because no information capable of verifying the integrity of the archive exists, so that the trust of the user to the archive is reduced.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a file management method and device based on a alliance blockchain, which can ensure confidentiality of files, realize transparency of file fingerprint information and confirm whether the files are modified.
In order to solve the above problems, an embodiment of the present invention provides a file management method based on a federated blockchain, which at least includes the following steps:
receiving an identification document submitted when a user applies for registration, and after checking the user information of the identification document through a file management center, storing the user information to the file management center;
after carrying out hash operation and user signature processing on an original file uploaded by a user side, sending a first file fingerprint and a first file fingerprint signature to a blockchain network center for registration, uploading integrated file information generated by merging to a file management center, and after passing file consistency verification, transferring the original file to a storage node of the file management center;
after receiving a file retrieval application sent by a user, carrying out identity validity verification and file retrieval authority query on the user, extracting a corresponding file to a user side, and completing file retrieval after passing file integrity verification.
Further, the receiving the identification document submitted when the user applies for registration, after checking the basic information through the archive management center, storing the user information to the archive management center, and further includes:
and verifying the correctness of the user certificate submitted when the user applies for registration, and after the user certificate passes the verification, publishing the user certificate to the blockchain network in a public way.
Further, after the original file uploaded by the user terminal is subjected to hash operation and user signature processing successively, a first file fingerprint and a first file fingerprint signature are sent to a blockchain network center for registration, integrated file information generated by merging is uploaded to a file management center, and after the consistency of the file is verified, the original file is transferred to a storage node of the file management center; the method comprises the following steps:
carrying out hash operation on an original file which is selected by a user and needs to be uploaded, and generating a corresponding first file fingerprint;
signing the first file fingerprint according to a private key of the user identity to obtain a corresponding first file fingerprint signature;
combining the original file, the first file fingerprint and the first file fingerprint signature, generating comprehensive file information, uploading the comprehensive file information to a file management center, and sending the first file fingerprint and the first file fingerprint signature to a blockchain network for registration;
And extracting a second file fingerprint from the comprehensive file information and verifying file consistency, signing the second file fingerprint after the file consistency is verified, sending the second file fingerprint to a blockchain network for registration, and transferring the original file to a storage node of a file management center.
Further, the extracting of the second file fingerprint and the file consistency verification are performed on the comprehensive file information, after the file consistency verification is passed, the second file fingerprint is signed and then sent to the blockchain network for registration, and the original file is transferred to a storage node of the file management center, specifically:
after receiving the comprehensive file information uploaded by the user, the file management center extracts an original file and a second file fingerprint, and verifies the integrity of the second file fingerprint according to the file fingerprint signature;
performing hash operation on the extracted original file to generate a third file fingerprint;
comparing the second file fingerprint, the third file fingerprint and the first file fingerprint extracted from the blockchain network, if the three fingerprint comparison results are consistent, signing the second file fingerprint, then sending the second file fingerprint to the blockchain network for registration, and transferring the original file to a storage node of a file management center.
Further, the verifying the integrity of the second file fingerprint according to the file fingerprint signature specifically comprises:
acquiring a public key corresponding to the user according to the user registration information;
calculating a corresponding archive fingerprint according to the public key, and comparing the archive fingerprint with the extracted second archive fingerprint;
and if the comparison results are consistent, verifying that the second file fingerprint is a complete file fingerprint.
Further, after receiving the file retrieval application sent by the user, the user is subjected to identity validity verification and file retrieval authority query successively, the corresponding file is extracted to the user side, and after passing the file integrity verification, file retrieval is completed, specifically:
the file retrieval application is sent to a blockchain network center for recording, and identity legitimacy of the user is verified;
after passing the verification, inquiring the file retrieval authority corresponding to the user, if the file retrieval authority is met, extracting the file corresponding to the file retrieval application to the user, and updating the file retrieval application record;
and comparing the first file fingerprint information registered by the archive file in the blockchain network center with third file fingerprint information obtained by carrying out hash operation on the retrieved archive file, thereby completing the verification of the integrity of the archive.
One embodiment of the present invention provides a federated blockchain-based archive management device, comprising:
the user identity binding module is used for receiving an identity document submitted when a user applies for registration, and storing the user information to the archive management center after checking the user information of the identity document through the archive management center;
the user file uploading module is used for sequentially carrying out hash operation and user signature processing on an original file uploaded by a user side, sending a first file fingerprint and a first file fingerprint signature to the blockchain network center for registration, uploading the integrated file information generated by combination to the file management center, and transferring the original file to a storage node of the file management center after passing the consistency verification of the file;
and the user file retrieval module is used for sequentially carrying out identity validity verification and file retrieval authority query on the user after receiving the file retrieval application sent by the user, extracting the corresponding file to the user side and completing file retrieval after passing the file integrity verification.
Further, the user profile uploading module specifically includes:
carrying out hash operation on an original file which is selected by a user and needs to be uploaded, and generating a corresponding first file fingerprint;
Signing the first file fingerprint according to a private key of the user identity to obtain a corresponding first file fingerprint signature;
combining the original file, the first file fingerprint and the first file fingerprint signature, generating comprehensive file information, uploading the comprehensive file information to a file management center, and sending the first file fingerprint and the first file fingerprint signature to a blockchain network for registration;
and extracting a second file fingerprint from the comprehensive file information and verifying file consistency, signing the second file fingerprint after the file consistency is verified, sending the second file fingerprint to a blockchain network for registration, and transferring the original file to a storage node of a file management center.
An embodiment of the present invention also provides a federated blockchain-based archive management terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, where the processor implements a federated blockchain-based archive management method as described above.
An embodiment of the present invention further provides a computer readable storage medium, where the computer readable storage medium includes a stored computer program, where when the computer program runs, a device where the computer readable storage medium is controlled to execute a federated blockchain-based archive management method as described above.
The embodiment of the invention provides a file management method and device based on a alliance blockchain, wherein the method comprises the following steps: receiving an identification document submitted when a user applies for registration, and after checking the user information of the identification document through a file management center, storing the user information to the file management center; after carrying out hash operation and user signature processing on an original file uploaded by a user side, sending a first file fingerprint and a first file fingerprint signature to a blockchain network center for registration, uploading integrated file information generated by merging to a file management center, and after passing file consistency verification, transferring the original file to a storage node of the file management center; after receiving a file retrieval application sent by a user, carrying out identity validity verification and file retrieval authority query on the user, extracting a corresponding file to a user side, and completing file retrieval after passing file integrity verification.
The invention can be based on the file management scheme of the alliance blockchain, combines the characteristics that the alliance blockchain information is transparent to the alliance organization and the record itself cannot be tampered, ensures the confidentiality of the file, and realizes the transparency of the fingerprint information of the file by recording the fingerprint information after the file data is subjected to the hash operation by the blockchain; and based on the non-tamper-evident property of the alliance blockchain record, permanently maintaining the fingerprint information of the file, checking the integrity of the file actually obtained by the user through the fingerprint information, after the file is obtained by the file demander, the file can be confirmed whether to be modified or not through the historical fingerprint information recorded by the alliance block chain, wherein all the historical operation records can track on the alliance block chain, and confidentiality protection of file data is realized.
Drawings
FIG. 1 is a flowchart illustrating a method for federated blockchain-based archive management in accordance with a first embodiment of the present invention;
FIG. 2 is a flowchart of user identity binding according to a first embodiment of the present invention;
FIG. 3 is a flowchart illustrating a file consistency verification process according to a first embodiment of the present invention;
FIG. 4 is a flowchart illustrating a user profile uploading and archiving process according to a first embodiment of the present invention;
FIG. 5 is a flowchart illustrating a user profile review process according to a first embodiment of the present invention;
FIG. 6 is a schematic diagram of a file management apparatus based on a federated blockchain according to a second embodiment of the present invention;
FIG. 7 is a block chain based file management architecture according to a second embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
First, application scenarios that can be provided by the present invention, such as user file management based on a federated blockchain, will be described.
First embodiment of the present invention:
please refer to fig. 1-5.
As shown in FIG. 1, the present embodiment provides a file management method based on a federated blockchain, which at least includes the following steps:
s1, receiving an identity document submitted when a user applies for registration, and after checking user information of the identity document through a file management center, storing the user information to the file management center;
in a preferred embodiment, the step S1 further includes:
and verifying the correctness of the user certificate submitted when the user applies for registration, and after the user certificate passes the verification, publishing the user certificate to the blockchain network in a public way.
Specifically, for step S1, as shown in fig. 2, when a user registers, the user needs to submit corresponding identification materials, prove the validity of the user' S identity to the archive center, and audit the archive center, if the audit is not passed, prompt the user to submit the registration materials again; if the basic information is verified, the correctness of the user certificate submitted by the application registered user is verified, wherein the user certificate can be issued by a file center and can also be obtained by the user to a third party certificate authority. After the certificate passes verification, the archive center stores the user information, and simultaneously publishes the user certificate in the alliance blockchain for other institutions or users to verify, and the user identity binding process is finished initially.
S2, after carrying out hash operation and user signature processing on an original file uploaded by a user side, sending a first file fingerprint and a first file fingerprint signature to a blockchain network center for registration, uploading integrated file information generated by merging to a file management center, and after passing file consistency verification, transferring the original file to a storage node of the file management center;
in a preferred embodiment, as shown in fig. 3, the step S2 specifically includes:
S21, carrying out hash operation on an original file which is selected by a user and needs to be uploaded, and generating a corresponding first file fingerprint;
s22, signing the first file fingerprint according to a private key of the user identity to obtain a corresponding first file fingerprint signature;
s23, combining the original file, the first file fingerprint and the first file fingerprint signature, generating comprehensive file information, uploading the comprehensive file information to a file management center, and sending the first file fingerprint and the first file fingerprint signature to a blockchain network for registration;
s24, extracting a second file fingerprint from the comprehensive file information and verifying file consistency, signing the second file fingerprint after the file consistency is verified, sending the second file fingerprint to a blockchain network for registration, and transferring the original file to a storage node of a file management center.
Specifically, for the step S2, as shown in fig. 4, the process of uploading and archiving the user profile is specifically as follows:
step 1: the user selects files to be uploaded;
step 2: the client performs hash calculation on the selected file to obtain a data fingerprint Se of the file; the hash operation in this embodiment mainly refers to SHA-256 algorithm. The specific flow is simple, namely, the file data is read firstly, the read file data is used as the input of the SHA-256 algorithm, and 256-bit message digest, also called fingerprint of the file data, is obtained through the SHA-256 algorithm operation.
Step 3: the user signs the archival fingerprint by using the private key of the user identity, and combines the archival fingerprint with the signature;
step 4: the user carries out merging operation on the generated file fingerprint signature and the original file;
step 5: and (3) obtaining the merging result of the step (4), and then adding file fingerprint information to generate comprehensive file information, wherein the comprehensive file information comprises three fields: the original file, the file fingerprint and the file fingerprint signature, wherein the content corresponds to the original data of the uploaded file respectively, and the fingerprint of the uploaded file and the signature of the file fingerprint;
step 6: the user sends the file fingerprint and the signature thereof to the blockchain network for registration through an interface provided by the client;
step 7: uploading the comprehensive archive information to an archive management center;
step 8: the file management center receives comprehensive file information uploaded by a user, extracts original files and file fingerprint data Se, and verifies the integrity of fingerprints according to file fingerprint signatures, and the specific process is that the file management center obtains a public key of the user according to user registration information, and can verify signature information of the user by utilizing the public key of the user, wherein the verification process comprises the following steps: the public key is used for calculating and obtaining signature content (archival fingerprint), and the signature process is a process that a user encrypts the fingerprint by using the private key, so that the public key can be used for decrypting and obtaining the signature content; after the original file fingerprint data of the signature is obtained, the original file fingerprint data is compared with the extracted file fingerprint data Se to see whether the two fingerprints are consistent, namely, verification passes or not, and verification fails or not.
Step 9: performing hash calculation again by using the extracted original file to generate file fingerprints;
step 10: acquiring a newly generated archive fingerprint New;
step 11: acquiring archive fingerprint information registered by a user in step 6;
step 12: extracting original file fingerprints Ori obtained in a blockchain;
step 13: comparing the archive fingerprints obtained in the steps 8, 10 and 12, if the comparison results of the three fingerprints are consistent, signing the archive fingerprint by the archive center, and then sending the corresponding archive fingerprint to the blockchain for registration, entering a step 14, otherwise entering a step 15;
step 14: the original file data are transferred to a storage node of a file management center;
step 15: prompting the user to upload file data damage and resubmit.
The private key in step 8 generally exists in the form of a key file at the user end, the corresponding private key is stored in the key file, and the client end provides a program for reading the private key in the key file to read the private key. The signing process of the file fingerprint involves knowledge of the public key cryptography part in cryptography, and is different from the common symmetric encryption in which the same key is used for encryption and decryption. In public key cryptography, the encryption and decryption keys are different, and in the case of information encryption and decryption, the public key is used for encrypting information, and the private key is used for decrypting the encrypted information. In the digital signature scheme, the corresponding public key is disclosed to all people needing to verify the authenticity of the signature, the private key is only owned by the user corresponding to the signature, and under the condition that the private key is not revealed, the private key is generally used for carrying out cryptographic operation on the original information Msg, and the obtained operation result is the signature Sig of the original information Msg. The person possessing the corresponding public key generally obtains the original information Msg while obtaining the signature Sig, uses the public key to carry out signature verification operation on the Sig to obtain a result Msg ', compares the Msg' with the Msg, and if the result is consistent, the information that the Msg is signed by the user is indicated as being unmodified. If not, it is an indication that the Msg has been tampered with. In general, in public key cryptography, the private key is typically kept for the user alone, and is not revealed to the outside for decryption or signing; the public key is disclosed externally and is used to encrypt or verify the signature. The general signature is attached to the original information of the signature for signature verification. The archive fingerprint is combined with the signature, i.e. the signature is attached to the archive fingerprint.
In a preferred embodiment, the step S24 specifically includes:
after receiving the comprehensive file information uploaded by the user, the file management center extracts an original file and a second file fingerprint, and verifies the integrity of the second file fingerprint according to the file fingerprint signature;
performing hash operation on the extracted original file to generate a third file fingerprint;
comparing the second file fingerprint, the third file fingerprint and the first file fingerprint extracted from the blockchain network, if the three fingerprint comparison results are consistent, signing the second file fingerprint, then sending the second file fingerprint to the blockchain network for registration, and transferring the original file to a storage node of a file management center.
In a preferred embodiment, the verification of the integrity of the second file fingerprint according to the file fingerprint signature is specifically:
acquiring a public key corresponding to the user according to the user registration information;
calculating a corresponding archive fingerprint according to the public key, and comparing the archive fingerprint with the extracted second archive fingerprint;
and if the comparison results are consistent, verifying that the second file fingerprint is a complete file fingerprint.
The embodiment mainly adopts the alliance blockchain technology, and due to the non-tamperable characteristic of the alliance blockchain technology, the unidirectionality and the collision resistance of hash calculation, the confidentiality and the reliability of the scheme are ensured. The alliance blockchain consists of different archive centers and is maintained together, so that fingerprint information of the archive can be stored in each node participating in the alliance blockchain network, the fingerprint information registered in the node is difficult to modify, meanwhile, the fingerprint information is difficult to correlate with actual archive data, and confidentiality protection of the archive data is realized.
And S3, after receiving a file retrieval application sent by a user, carrying out identity validity verification and file retrieval authority query on the user, extracting a corresponding file to the user side, and completing file retrieval after passing file integrity verification.
In a preferred embodiment, the step S3 specifically includes:
the file retrieval application is sent to a blockchain network center for recording, and identity legitimacy of the user is verified;
after passing the verification, inquiring the file retrieval authority corresponding to the user, if the file retrieval authority is met, extracting the file corresponding to the file retrieval application to the user, and updating the file retrieval application record;
and comparing the first file fingerprint information registered by the archive file in the blockchain network center with third file fingerprint information obtained by carrying out hash operation on the retrieved archive file, thereby completing the verification of the integrity of the archive.
Specifically, as shown in fig. 5, for the step S3, the specific steps for retrieving the user profile are as follows:
step 1: the user puts forward a designated file retrieval application according to the self demand, and the application can be directly sent to the blockchain network for recording through an interface provided by a service layer;
Step 2: the file management center receives the file adjustment application and verifies the validity of the identity of the applicant; wherein the verification mainly checks to see if the user's certificate registered with the platform has expired or been revoked. If the user is out of date or revoked, the user is not legal;
step 3: the identity of the applicant is legal, the file access authority of the applicant is checked, the step 4 is switched to, and otherwise, the step 12 is switched to;
step 4: inquiring file retrieval rights corresponding to the identity of the applicant, extracting the file to be retrieved if the retrieval rights are met, and turning to step 5, otherwise, turning to step 12;
step 5: and updating the record state of the on-chain file-up request to be successful in file-up, and sending the retrieved archive file to a file-up request user.
Step 6: inquiring the related information of the fingerprint on the original chain of the read file from the blockchain by the read application user;
step 7: extracting an original fingerprint of the file;
step 8: the user performs hash calculation by using the file fetched from the file center;
step 9: acquiring fingerprint information of the retrieval file;
step 10: comparing the fingerprint information obtained in the steps 7 and 9 to finish the integrity check;
step 11: performing different processing according to the verification result, and if the verification is passed, indicating that the file data returned by the file center is consistent with the file data originally uploaded, so as to complete the process of retrieving the file; otherwise, the integrity of the retrieval file is destroyed, the data defect of the retrieval file is required to enter an abnormal file processing flow;
Step 12: the applicant is prompted to review that the corresponding file is not authorized to be reviewed.
For the integrity check in step 10, the process of comparing the fingerprint information calculated by retrieving the file in step 9 with the file fingerprint information extracted in step 7 is the process of integrity check, if the two fingerprints are consistent, it is indicated that the integrity of the file is not destroyed, the information is perfect, and the information is consistent with the original information and is not modified or tampered. But if not, the archive is indicated as subject to tampering.
The file management method based on the alliance blockchain provided by the embodiment comprises the following steps: receiving an identification document submitted when a user applies for registration, and after checking the user information of the identification document through a file management center, storing the user information to the file management center; after carrying out hash operation and user signature processing on an original file uploaded by a user side, sending a first file fingerprint and a first file fingerprint signature to a blockchain network center for registration, uploading integrated file information generated by merging to a file management center, and after passing file consistency verification, transferring the original file to a storage node of the file management center; after receiving a file retrieval application sent by a user, carrying out identity validity verification and file retrieval authority query on the user, extracting a corresponding file to a user side, and completing file retrieval after passing file integrity verification. The embodiment can be based on the file management scheme of the alliance blockchain, combines the characteristics that the alliance blockchain information is transparent to the alliance organization and the record itself cannot be tampered, ensures the confidentiality of files, and realizes the transparency of file fingerprint information by recording fingerprint information after the file data is subjected to hash operation by the blockchain; and based on the non-tamper-evident property of the alliance blockchain record, permanently maintaining the fingerprint information of the file, checking the integrity of the file actually obtained by the user through the fingerprint information, after the file is obtained by the file demander, the file can be confirmed whether to be modified or not through the historical fingerprint information recorded by the alliance block chain, wherein all the historical operation records can track on the alliance block chain, and confidentiality protection of file data is realized.
Second embodiment of the present invention:
please refer to fig. 6-7.
As shown in fig. 4, the present embodiment provides a file management apparatus based on a federated blockchain, including:
the user identity binding module 100 is configured to receive an identity document submitted when a user applies for registration, and store the user information to a archive management center after checking the user information of the identity document through the archive management center;
specifically, for the user identity binding module 100, when a user registers, the user needs to submit corresponding identification materials, prove the legitimacy of the user identity to the archive center, and audit the archive center, if the audit is not passed, prompt the user to submit the registration materials again; if the basic information is verified, the correctness of the user certificate submitted by the application registered user is verified, wherein the user certificate can be issued by a file center and can also be obtained by the user to a third party certificate authority. After the certificate passes verification, the archive center stores the user information, and simultaneously publishes the user certificate in the alliance blockchain for other institutions or users to verify, and the user identity binding process is finished initially.
The user file uploading module 200 is configured to send a first file fingerprint and a first file fingerprint signature to the blockchain network center for registration after performing hash operation and user signature processing on an original file uploaded by a user terminal, upload the integrated file information generated by merging to the file management center, and transfer the original file to a storage node of the file management center after passing the consistency verification of the file;
in a preferred embodiment, the user profile uploading module 200 specifically includes:
carrying out hash operation on an original file which is selected by a user and needs to be uploaded, and generating a corresponding first file fingerprint;
signing the first file fingerprint according to a private key of the user identity to obtain a corresponding first file fingerprint signature;
combining the original file, the first file fingerprint and the first file fingerprint signature, generating comprehensive file information, uploading the comprehensive file information to a file management center, and sending the first file fingerprint and the first file fingerprint signature to a blockchain network for registration;
and extracting a second file fingerprint from the comprehensive file information and verifying file consistency, signing the second file fingerprint after the file consistency is verified, sending the second file fingerprint to a blockchain network for registration, and transferring the original file to a storage node of a file management center.
The user file retrieval module 300 is configured to, after receiving a file retrieval application sent by a user, perform identity validity verification and file retrieval authority query on the user successively, extract a corresponding file to the user side, and complete file retrieval after passing file integrity verification.
In a preferred embodiment, for the user profile review module 300, specifically:
the file retrieval application is sent to a blockchain network center for recording, and identity legitimacy of the user is verified;
after passing the verification, inquiring the file retrieval authority corresponding to the user, if the file retrieval authority is met, extracting the file corresponding to the file retrieval application to the user, and updating the file retrieval application record;
and comparing the first file fingerprint information registered by the archive file in the blockchain network center with third file fingerprint information obtained by carrying out hash operation on the retrieved archive file, thereby completing the verification of the integrity of the archive.
As shown in fig. 7, the present embodiment further provides a blockchain-based archive management architecture, which is divided into three layers, namely a presentation layer, a service layer, and a blockchain data layer, according to different function types. The main functions of each layer are as follows:
The display layer is a layer which is in direct contact with a user of the file system, and the system is distinguished according to different user types, and the display layer is divided into two parts, namely a common user end and a file management end. The common user side is mainly interacted with users with file uploading and file retrieving requirements directly and is mainly responsible for user identity registration binding, file uploading and file retrieving. The file management end is mainly responsible for file archiving, file retrieval application auditing, file acquisition and legal file modification.
The service layer mainly provides a service interface for the display layer to exchange data with the bottom layer and a user authority management function. The main functions are as follows:
user rights management: the method is mainly used for controlling the user permission, and assigning the appointed permission according to the user identity, such as uploading and file retrieval application permission only for a common user, and a file manager has file retrieval application approval and file retrieval permission.
File retrieval registration management: when the file reviewer sends the review request each time, the review request needs to be registered through the module before the review, the corresponding request can be recorded in the blockchain, and the request result is updated according to the review result when the file reviewer subsequently reviews. So that the file inquiry is transparent in the whole process.
And (3) file receiving: is responsible for receiving the original archive information uploaded by the user.
Collecting archives fingerprint: and the method is specially responsible for calculating files which are archived, and acquiring unique fingerprints (hash values) corresponding to each file.
And (3) file preservation: after all the steps are completed, the steps comprise fingerprint collection, fingerprint registration and chaining, and the original data of the files are stored in the storage nodes of the respective file centers.
And (3) checking files: when a user needs to retrieve the file, the integrity check is performed on the retrieved file when the file is retrieved. And comparing the file fingerprint data registered in the blockchain during archiving with the fingerprint acquired after the retrieved file is subjected to fingerprint acquisition again, thereby completing verification.
Archive chain code interaction service: the method mainly provides interaction service for the process of interacting with the underlying alliance blockchain alliance in all the steps, and finishes the reading and registering operation of data in the alliance blockchain.
The storage layer is mainly responsible for storing all relevant data in the file management process, and comprises a alliance block chain module and a file storage module. The alliance block chain module mainly consists of all archives together to form an alliance block chain network. Wherein the identity information of the user and the public key of the user are mainly recorded and bound with each other. The legitimacy of each user identity is responsible for auditing by each archive center, and once the user identity is registered in the blockchain, the user identity is considered to be a legal user. In addition, the original fingerprint information of the archive is recorded in the blockchain, the integrity check of the archive is realized based on the recorded archive fingerprint information, and all the archive retrieval applications can be recorded in the blockchain to form an archive retrieval history. The file storage module is mainly responsible for storing the file data, and when the file storage module is different from the data stored in the blockchain, the file storage module is mainly responsible for storing the original file data, so that the data stored by the file storage module is large in quantity and can be regarded as a file storage system. In contrast, the blockchain module stores fingerprint information and history information with less data storage.
Compared with the traditional file management scheme, the scheme utilizes the blockchain to store the original fingerprint information of the file, reads and modifies the record, so that all legal file changes can be recorded through the blockchain maintained by multiple groups, all historical operation records can be tracked on the blockchain, and meanwhile, a file reader can verify the integrity of the file by utilizing the original fingerprint information of the file recorded by the blockchain.
The file management apparatus based on the alliance blockchain provided in this embodiment includes: the user identity binding module is used for receiving an identity document submitted when a user applies for registration, and storing the user information to the archive management center after checking the user information of the identity document through the archive management center; the user file uploading module is used for sequentially carrying out hash operation and user signature processing on an original file uploaded by a user side, sending a first file fingerprint and a first file fingerprint signature to the blockchain network center for registration, uploading the integrated file information generated by combination to the file management center, and transferring the original file to a storage node of the file management center after passing the consistency verification of the file; and the user file retrieval module is used for sequentially carrying out identity validity verification and file retrieval authority query on the user after receiving the file retrieval application sent by the user, extracting the corresponding file to the user side and completing file retrieval after passing the file integrity verification. The embodiment can be based on the file management scheme of the alliance blockchain, combines the characteristics that the alliance blockchain information is transparent to the alliance organization and the record itself cannot be tampered, ensures the confidentiality of the file, and realizes the transparency of the fingerprint information of the file by recording the fingerprint information of the file after the file data is subjected to the hash operation by the blockchain; and based on the non-tamper-evident property of the alliance blockchain record, permanently maintaining the fingerprint information of the file, checking the integrity of the file actually obtained by the user through the fingerprint information, after the file is obtained by the file demander, the file can be confirmed whether to be modified or not through the historical fingerprint information recorded by the alliance block chain, wherein all the historical operation records can track on the alliance block chain, and confidentiality protection of file data is realized.
An embodiment of the present invention also provides a federated blockchain-based archive management terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, where the processor implements a federated blockchain-based archive management method as described above.
An embodiment of the present invention further provides a computer readable storage medium, where the computer readable storage medium includes a stored computer program, where when the computer program runs, a device where the computer readable storage medium is controlled to execute a federated blockchain-based archive management method as described above.
In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the modules may be divided into a logic function, and there may be other division manners in actual implementation, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules, i.e., may be located in one place, or may be distributed over a plurality of modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module. The integrated modules may be implemented in hardware or in software functional modules.
While the foregoing is directed to the preferred embodiments of the present invention, it should be noted that modifications and variations could be made by those skilled in the art without departing from the principles of the present invention, and such modifications and variations are to be regarded as being within the scope of the invention.
Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by way of a computer program stored on a computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), or the like.
Claims (8)
1. A file management method based on a alliance block chain is characterized by at least comprising the following steps:
receiving an identification document submitted when a user applies for registration, and after checking the user information of the identification document through a file management center, storing the user information to the file management center;
after carrying out hash operation and user signature processing on an original file uploaded by a user side, sending a first file fingerprint and a first file fingerprint signature to a blockchain network center for registration, uploading integrated file information generated by merging to a file management center, and after passing file consistency verification, transferring the original file to a storage node of the file management center;
after receiving a file retrieval application sent by a user, carrying out identity validity verification and file retrieval authority query on the user in sequence, extracting a corresponding file to a user side, and completing file retrieval after passing file integrity verification;
after the original file uploaded by the user side is subjected to hash operation and user signature processing successively, a first file fingerprint and a first file fingerprint signature are sent to a blockchain network center for registration, integrated file information generated by merging is uploaded to a file management center, and after the consistency verification of the file is passed, the original file is transferred to a storage node of the file management center; the method comprises the following steps:
Carrying out hash operation on an original file which is selected by a user and needs to be uploaded, and generating a corresponding first file fingerprint;
signing the first file fingerprint according to a private key of the user identity to obtain a corresponding first file fingerprint signature;
combining the original file, the first file fingerprint and the first file fingerprint signature, generating comprehensive file information, uploading the comprehensive file information to a file management center, and sending the first file fingerprint and the first file fingerprint signature to a blockchain network for registration;
and extracting a second file fingerprint from the comprehensive file information and verifying file consistency, signing the second file fingerprint after the file consistency is verified, sending the second file fingerprint to a blockchain network for registration, and transferring the original file to a storage node of a file management center.
2. The federated blockchain-based archive management method of claim 1, wherein the receiving the identification document submitted by the user at registration, after auditing the basic information by the archive management center, saves the user information to the archive management center, further comprising:
and verifying the correctness of the user certificate submitted when the user applies for registration, and after the user certificate passes the verification, publishing the user certificate to the blockchain network in a public way.
3. The archive management method based on the alliance blockchain as in claim 1, wherein the extracting of the second archive fingerprint and the archive consistency verification are performed on the integrated archive information, after the archive consistency verification is passed, the second archive fingerprint is signed and then sent to the blockchain network for registration, and the original archive is transferred to a storage node of an archive management center, specifically:
after receiving the comprehensive file information uploaded by the user, the file management center extracts an original file and a second file fingerprint, and verifies the integrity of the second file fingerprint according to the file fingerprint signature;
performing hash operation on the extracted original file to generate a third file fingerprint;
comparing the second file fingerprint, the third file fingerprint and the first file fingerprint extracted from the blockchain network, if the three fingerprint comparison results are consistent, signing the second file fingerprint, then sending the second file fingerprint to the blockchain network for registration, and transferring the original file to a storage node of a file management center.
4. A federated blockchain-based archive management method as in claim 3, wherein verifying the integrity of the second archive fingerprint from an archive fingerprint signature is specifically:
Acquiring a public key corresponding to the user according to the user registration information;
calculating a corresponding archive fingerprint according to the public key, and comparing the archive fingerprint with the extracted second archive fingerprint;
and if the comparison results are consistent, verifying that the second file fingerprint is a complete file fingerprint.
5. The archive management method based on the alliance blockchain as in claim 1, wherein after receiving an archive retrieval application sent by a user, the user is successively subjected to identity validity verification and archive retrieval authority query, and a corresponding archive file is extracted to the user side, and after passing the archive integrity verification, archive retrieval is completed, specifically:
the file retrieval application is sent to a blockchain network center for recording, and identity legitimacy of the user is verified;
after passing the verification, inquiring the file retrieval authority corresponding to the user, if the file retrieval authority is met, extracting the file corresponding to the file retrieval application to the user, and updating the file retrieval application record;
and comparing the first file fingerprint information registered by the archive file in the blockchain network center with third file fingerprint information obtained by carrying out hash operation on the retrieved archive file, thereby completing the verification of the integrity of the archive.
6. A federated blockchain-based archive management device, comprising:
the user identity binding module is used for receiving an identity document submitted when a user applies for registration, and storing the user information to the archive management center after checking the user information of the identity document through the archive management center;
the user file uploading module is used for sequentially carrying out hash operation and user signature processing on an original file uploaded by a user side, sending a first file fingerprint and a first file fingerprint signature to the blockchain network center for registration, uploading the integrated file information generated by combination to the file management center, and transferring the original file to a storage node of the file management center after passing the consistency verification of the file;
the user file retrieval module is used for sequentially carrying out identity validity verification and file retrieval authority inquiry on a user after receiving a file retrieval application sent by the user, extracting a corresponding file to a user side, and completing file retrieval after passing file integrity verification;
the user file uploading module specifically comprises:
carrying out hash operation on an original file which is selected by a user and needs to be uploaded, and generating a corresponding first file fingerprint;
Signing the first file fingerprint according to a private key of the user identity to obtain a corresponding first file fingerprint signature;
combining the original file, the first file fingerprint and the first file fingerprint signature, generating comprehensive file information, uploading the comprehensive file information to a file management center, and sending the first file fingerprint and the first file fingerprint signature to a blockchain network for registration;
and extracting a second file fingerprint from the comprehensive file information and verifying file consistency, signing the second file fingerprint after the file consistency is verified, sending the second file fingerprint to a blockchain network for registration, and transferring the original file to a storage node of a file management center.
7. A federated blockchain-based archive management terminal device comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, the processor implementing a federated blockchain-based archive management method as recited in any one of claims 1-5 when the computer program is executed.
8. A computer readable storage medium, characterized in that the computer readable storage medium comprises a stored computer program, wherein the computer program when run controls a device in which the computer readable storage medium resides to perform the federated blockchain-based archive management method as claimed in any one of claims 1 to 5.
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| CN112242904B (en) * | 2020-11-19 | 2023-06-02 | 中国联合网络通信集团有限公司 | File information processing method and equipment |
| CN112560093B (en) * | 2020-12-17 | 2023-03-14 | 杭州趣链科技有限公司 | File management method, device, equipment and storage medium based on block chain |
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| CN113672953A (en) * | 2021-08-19 | 2021-11-19 | 安碳科技(深圳)有限公司 | Private chain file management system and method |
| CN113806816A (en) * | 2021-09-28 | 2021-12-17 | 北京航星永志科技有限公司 | Electronic file management method and device based on block chain and electronic equipment |
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