CN111931246A - File management method, equipment and medium based on block chain - Google Patents
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- G06F16/137—Hash-based
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- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
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- 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
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Abstract
The application discloses a block chain-based file management method, device and medium, wherein the method comprises the following steps: determining a hash value of the file; writing the hash value of the file into a block chain, and storing the file and the hash value corresponding to the file into storage equipment of a node of the block chain; receiving a request of a user for acquiring the file, and determining a node for storing the file according to the hash value of the file; and opening a communication interface of the node for storing the file to the user, so that the user can acquire the file through the node and check the file through the hash value in the block chain. Generating a hash value corresponding to the file through the content of the file, storing the hash value on a block chain, storing the file on a plurality of nodes, and searching and downloading the file by taking the hash value as a medium; and the uplink data only has a hash value, so that resources are greatly saved.
Description
Technical Field
The present application relates to the field of blockchain technologies, and in particular, to a method, an apparatus, and a medium for managing files based on blockchains.
Background
In the past decades, the information and digital wave is wrapped around the world, the mobile internet enables almost all services to be online services, the mobile internet removes the regionality of the services, and the number of users of many systems is changed from hundreds of thousands of users to hundreds of thousands of users or even hundreds of millions of users around the world.
Today, there are thousands of large data centers around the world in which information is stored. This means that the servers storing the data are all controlled by one company. If a problem occurs in the server storing the data, the data acquisition is affected, and the data cannot be restored seriously.
Disclosure of Invention
An embodiment of the present specification provides a block chain-based file management method, device, and medium, which are used to solve the following technical problems in the prior art:
the data storage mode using centralization has low safety;
the use of a fully distributed data storage approach to store data is prone to waste of resources.
The embodiment of the specification adopts the following technical scheme:
a first aspect of an embodiment of the present invention provides a block chain-based file management method, including:
determining a hash value of the file;
writing the hash value of the file into a block chain, and storing the file and the hash value corresponding to the file into storage equipment of a node of the block chain;
receiving a request of a user for acquiring the file, and determining a node for storing the file according to the hash value of the file;
and opening a communication interface of the node for storing the file to the user, so that the user can acquire the file through the node and check the file through the hash value in the block chain.
In one example, the determining a hash value of a file includes:
and receiving a file sent by a file provider, and generating a hash value of the file through an intelligent contract on the block chain.
In one example, the determining a hash value of a file includes:
receiving a file sent by the file provider;
encrypting and sending the file to a checking mechanism through the intelligent contract of the block chain so that the checking mechanism checks the file, and encrypting and sending the file to the intelligent contract of the block chain after the file is checked;
and generating a hash value of the file through the intelligent contract.
In one example, further comprising:
receiving a request to update the file;
determining a hash value of an updated file, and writing a character string obtained by packaging the hash value of the updated file and the hash value of the file into a block chain;
and storing the updated file and the character string in a storage device of a node of the block chain.
In one example, further comprising:
determining a storage space for each node of the block chain to store the file;
and determining the number of certificates awarded to each node according to the size of the storage space.
In one example, the receiving a request for the user to obtain the file includes:
and linking to the block chain through a file index in a search engine so that the block chain receives the request of the user, wherein the file index has the corresponding relation between the hash value of the file and the search condition.
In one example, the determining a node storing the file by the hash value of the file includes:
broadcasting the hash value to each node in the blockchain to determine a plurality of nodes that store the file;
determining a node that opens a communication interface to the user through data transfer capabilities of a plurality of nodes that store the file.
In one example, the writing the hash value of the file into a block chain includes:
determining whether a hash value of the file is duplicate to a stored hash value in the blockchain;
and if not, writing the hash value of the file into the block chain.
A second aspect of an embodiment of the present invention provides a block chain-based file management apparatus, including:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to:
determining a hash value of the file;
writing the hash value of the file into a block chain, and storing the file and the hash value corresponding to the file into storage equipment of a node of the block chain;
receiving a request of a user for acquiring the file, and determining a node for storing the file according to the hash value of the file;
and opening a communication interface of the node for storing the file to the user, so that the user can acquire the file through the node and check the file through the hash value in the block chain.
A third aspect of an embodiment of the present invention provides a block chain-based file management nonvolatile computer storage medium, in which computer-executable instructions are stored, where the computer-executable instructions are configured to:
determining a hash value of the file;
writing the hash value of the file into a block chain, and storing the file and the hash value corresponding to the file into storage equipment of a node of the block chain;
receiving a request of a user for acquiring the file, and determining a node for storing the file according to the hash value of the file;
and opening a communication interface of the node for storing the file to the user, so that the user can acquire the file through the node and check the file through the hash value in the block chain.
The embodiment of the specification adopts at least one technical scheme which can achieve the following beneficial effects:
generating a hash value corresponding to the file through the content of the file, storing the hash value on a block chain, storing the file on a plurality of nodes, and searching and downloading the file by taking the hash value as a medium; the uplink data only has a hash value, so that resources are greatly saved; the method has the advantages that the general certificate is used as the reward of the node storage file, so that the node can obtain benefits by storing the file, and the enthusiasm of the node in participating in file storage is improved; and distributed storage is performed through a plurality of nodes, so that the safety is high.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic flow chart of a method provided by embodiments of the present disclosure;
fig. 2 is a schematic diagram of an apparatus framework provided in an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present disclosure more apparent, the technical solutions of the present disclosure will be clearly and completely described below with reference to the specific embodiments of the present disclosure and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step based on the embodiments in the description belong to the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
The embodiment of the application provides a file management method based on a block chain and a corresponding scheme, wherein a hash value corresponding to a file is generated through the content of the file, the hash value is stored on the block chain, the file is stored on a plurality of nodes, and the search and download of the file are realized by taking the hash value as a medium; the uplink data only has a hash value, so that resources are greatly saved; the method has the advantages that the general certificate is used as the reward of the node storage file, so that the node can obtain benefits by storing the file, and the enthusiasm of the node in participating in file storage is improved; and distributed storage is performed through a plurality of nodes, so that the safety is high.
Fig. 1 is a schematic flow chart of a method provided in an embodiment of the present disclosure. As shown, the method comprises:
s101, determining a hash value of a file;
s102, writing the hash value of the file into a block chain, and storing the file and the hash value corresponding to the file into storage equipment of a node of the block chain;
s103, receiving a request of a user for acquiring the file, and determining a node for storing the file according to the hash value of the file;
s104, opening a communication interface of the node for storing the file to the user, so that the user can acquire the file through the node and check the file through the hash value in the block chain.
The block chain is a chain data structure formed by combining data blocks in a sequential connection mode according to a time sequence, and is a distributed account book which is guaranteed in a cryptographic mode and cannot be tampered and forged. Although the underlying technology of blockchains has been developed for many years, it has not been possible to achieve effective application in a particular scenario.
According to the embodiment of the invention, in step S101, an intelligent contract for managing the hash value of the file is set on the blockchain, and the intelligent contract is an automatically running script deployed on the blockchain and has a transparent characteristic due to being set on the blockchain. A user presets rules through an intelligent contract so as to write data into a block chain and acquire data browsing permission, and disclosure of privacy information is avoided to a great extent. Of course, the smart contracts are not the only implementation manner of the present application, and are set correspondingly according to different blockchain platforms, such as an ethernet house, a super book, and the like.
According to an embodiment of the present invention, in step S101, determining the hash value of the file may be implemented by an intelligent contract arranged on a blockchain. As mentioned above, as an on-chain code on a blockchain, it is completely transparent and open, with extremely high reliability.
In some preferred embodiments of the present invention, a usage scenario for applying the method to copyright review is provided, and specific implementation schemes are as follows:
the intelligent contract of the block chain receives a file sent by a file provider and judges the type of the file, such as whether the file belongs to film and television works or software works such as games and the like;
the block chain encrypts and sends the files of the corresponding types to corresponding auditing agencies according to the types of the files;
after the auditing mechanism finishes auditing the file, the auditing information is encrypted and fed back to the block chain, for example. When the file is over-audited, the over-audited version number and corresponding audited information are fed back to the block chain;
and recording the version number and the corresponding information of the audit by the block chain, generating a hash value by intelligently combining the file, and writing the hash value into the block chain.
In the application process, the communication mode between the block chain and the auditing mechanism is realized in an asymmetric encryption mode. Namely, the block chain encrypts the file by using a public key of the auditing mechanism and then sends the file to the auditing mechanism, and the auditing mechanism decrypts the file by using a private key of the auditing mechanism to obtain the file; similarly, the auditing mechanism encrypts the file, the version number and the corresponding audited information by using the public key of the block chain and then sends the encrypted file, the version number and the corresponding audited information to the block chain, and the block chain decrypts the encrypted file, the version number and the corresponding audited information by using the private key of the block chain.
By transmitting in such an encrypted manner, leakage of electronic data such as movies, music, games, and the like can be effectively prevented.
In some other embodiments of the present invention, writing the hash value of the file into a block chain includes:
determining whether a hash value of the file is duplicate to a stored hash value in the blockchain;
and if not, writing the hash value of the file into the block chain.
According to the specific embodiment of the present invention, for the management of the file, such as the installation package of the software application, based on the actual situation that the file is frequently updated, the method of the embodiment of the present invention further includes:
receiving a request for updating the file by a software provider by an intelligent contract of the blockchain;
the intelligent contract determines the hash value of the updated file and writes the hash value of the updated file and the character string obtained by packaging the hash value of the file into a block chain;
and the intelligent contract stores the updated file and the character string in a storage device of the node of the block chain.
According to the embodiment of the present invention, in order to increase the aggressiveness of the node to provide more file storage spaces and services, the method of the embodiment of the present invention further includes:
determining a storage space for each node of the block chain to store the file;
and determining the number of certificates awarded to each node according to the size of the storage space.
The blockchain system issues a pass or virtual token for issuing a reward to the storage node. If a node has available storage space, it can be sold, obtaining a certain amount of virtual tokens as rewards, which effectively incentivizes the distributed storage and backup of files.
According to the specific embodiment of the present invention, receiving a request from a user to acquire the file includes:
and the requester is linked to the block chain through a file index in the search engine so that the block chain receives the request of the user, wherein the file index has the corresponding relation between the hash value of the file and the search condition.
Accordingly, in some preferred embodiments of the present invention, determining a node storing the file by using the hash value of the file includes:
broadcasting the hash value to each node in the blockchain to determine a plurality of nodes that store the file;
determining a node that opens a communication interface to the user through data transfer capabilities of a plurality of nodes that store the file.
Based on the same idea, some embodiments of the present application further provide a device and a non-volatile computer storage medium corresponding to the above method.
Fig. 2 is a schematic diagram of an apparatus framework provided in an embodiment of the present specification, and a file management apparatus based on blockchain management includes:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to:
determining a hash value of the file;
writing the hash value of the file into a block chain, and storing the file and the hash value corresponding to the file into storage equipment of a node of the block chain;
receiving a request of a user for acquiring the file, and determining a node for storing the file according to the hash value of the file;
and opening a communication interface of the node for storing the file to the user, so that the user can acquire the file through the node and check the file through the hash value in the block chain.
Some embodiments of the present application provide a blockchain based file management non-volatile computer storage medium corresponding to fig. 1, having stored thereon computer-executable instructions configured to:
determining a hash value of the file;
writing the hash value of the file into a block chain, and storing the file and the hash value corresponding to the file into storage equipment of a node of the block chain;
receiving a request of a user for acquiring the file, and determining a node for storing the file according to the hash value of the file;
and opening a communication interface of the node for storing the file to the user, so that the user can acquire the file through the node and check the file through the hash value in the block chain.
The embodiments in the present application are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the device and media embodiments, the description is relatively simple as it is substantially similar to the method embodiments, and reference may be made to some descriptions of the method embodiments for relevant points.
The device and the medium provided by the embodiment of the application correspond to the method one to one, so the device and the medium also have the similar beneficial technical effects as the corresponding method, and the beneficial technical effects of the method are explained in detail above, so the beneficial technical effects of the device and the medium are not repeated herein.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is directed to methods, apparatus (systems), and computer program products according to embodiments of the present invention
A flowchart and/or block diagram of an article. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A file management method based on a block chain is characterized by comprising the following steps:
determining a hash value of the file;
writing the hash value of the file into a block chain, and storing the file and the hash value corresponding to the file into storage equipment of a node of the block chain;
receiving a request of a user for acquiring the file, and determining a node for storing the file according to the hash value of the file;
and opening a communication interface of the node for storing the file to the user, so that the user can acquire the file through the node and check the file through the hash value in the block chain.
2. The method of claim 1, wherein determining the hash value of the file comprises:
and receiving a file sent by a file provider, and generating a hash value of the file through an intelligent contract on the block chain.
3. The method of claim 2, wherein determining the hash value of the file comprises:
receiving a file sent by the file provider;
encrypting and sending the file to a checking mechanism through the intelligent contract of the block chain so that the checking mechanism checks the file, and encrypting and sending the file to the intelligent contract of the block chain after the file is checked;
and generating a hash value of the file through the intelligent contract.
4. The method of claim 1, further comprising:
receiving a request to update the file;
determining a hash value of an updated file, and writing a character string obtained by packaging the hash value of the updated file and the hash value of the file into a block chain;
and storing the updated file and the character string in a storage device of a node of the block chain.
5. The method of claim 1, further comprising:
determining a storage space for each node of the block chain to store the file;
and determining the number of certificates awarded to each node according to the size of the storage space.
6. The method of claim 1, wherein receiving the request for the file from the user comprises:
and linking to the block chain through a file index in a search engine so that the block chain receives the request of the user, wherein the file index has the corresponding relation between the hash value of the file and the search condition.
7. The method according to claim 1, wherein the determining the node storing the file according to the hash value of the file comprises:
broadcasting the hash value to each node in the blockchain to determine a plurality of nodes that store the file;
determining a node that opens a communication interface to the user through data transfer capabilities of a plurality of nodes that store the file.
8. The method of claim 1, wherein writing the hash value of the file into a blockchain comprises:
determining whether a hash value of the file is duplicate to a stored hash value in the blockchain;
and if not, writing the hash value of the file into the block chain.
9. A block chain-based file management apparatus, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to:
determining a hash value of the file;
writing the hash value of the file into a block chain, and storing the file and the hash value corresponding to the file into storage equipment of a node of the block chain;
receiving a request of a user for acquiring the file, and determining a node for storing the file according to the hash value of the file;
and opening a communication interface of the node for storing the file to the user, so that the user can acquire the file through the node and check the file through the hash value in the block chain.
10. A blockchain-based file management non-volatile computer storage medium storing computer-executable instructions configured to:
determining a hash value of the file;
writing the hash value of the file into a block chain, and storing the file and the hash value corresponding to the file into storage equipment of a node of the block chain;
receiving a request of a user for acquiring the file, and determining a node for storing the file according to the hash value of the file;
and opening a communication interface of the node for storing the file to the user, so that the user can acquire the file through the node and check the file through the hash value in the block chain.
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| CN202010486073.1A CN111931246A (en) | 2020-06-01 | 2020-06-01 | File management method, equipment and medium based on block chain |
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| CN202010486073.1A CN111931246A (en) | 2020-06-01 | 2020-06-01 | File management method, equipment and medium based on block chain |
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| CN112291355A (en) * | 2020-10-30 | 2021-01-29 | 上海阿吉必信息技术有限公司 | Key backup and recovery method and device for block chain wallet |
| CN112560093A (en) * | 2020-12-17 | 2021-03-26 | 杭州趣链科技有限公司 | File management method, device, equipment and storage medium based on block chain |
| CN112597485A (en) * | 2021-03-01 | 2021-04-02 | 腾讯科技（深圳）有限公司 | Information checking method, device and equipment based on block chain and storage medium |
| CN113378218A (en) * | 2021-06-02 | 2021-09-10 | 浙江数秦科技有限公司 | Intellectual property data storage and authentication method based on block chain |
| CN113641631A (en) * | 2021-08-10 | 2021-11-12 | 深圳技术大学 | Block chain-based IPFS file management method, equipment and storage medium |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112291355A (en) * | 2020-10-30 | 2021-01-29 | 上海阿吉必信息技术有限公司 | Key backup and recovery method and device for block chain wallet |
| CN112291355B (en) * | 2020-10-30 | 2022-09-09 | 上海阿吉必信息技术有限公司 | Key backup and recovery method and device for block chain wallet |
| CN112560093A (en) * | 2020-12-17 | 2021-03-26 | 杭州趣链科技有限公司 | File management method, device, equipment and storage medium based on block chain |
| 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 |
| CN112597485A (en) * | 2021-03-01 | 2021-04-02 | 腾讯科技（深圳）有限公司 | Information checking method, device and equipment based on block chain and storage medium |
| CN112597485B (en) * | 2021-03-01 | 2021-06-08 | 腾讯科技（深圳）有限公司 | Information checking method, device and equipment based on block chain and storage medium |
| CN113378218A (en) * | 2021-06-02 | 2021-09-10 | 浙江数秦科技有限公司 | Intellectual property data storage and authentication method based on block chain |
| CN113641631A (en) * | 2021-08-10 | 2021-11-12 | 深圳技术大学 | Block chain-based IPFS file management method, equipment and storage medium |
| CN113641631B (en) * | 2021-08-10 | 2023-05-23 | 深圳技术大学 | IPFS file management method, device and storage medium based on block chain |
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