WO2019114098A1

WO2019114098A1 - Blockchain-based storage system download method

Info

Publication number: WO2019114098A1
Application number: PCT/CN2018/073678
Authority: WO
Inventors: 尚小朋
Original assignee: 成都链一网络科技有限公司
Priority date: 2017-12-15
Filing date: 2018-01-22
Publication date: 2019-06-20
Also published as: CN108134822A

Abstract

A blockchain-based storage system download method, comprising: S1. a downloader initiates a download request for downloading a file; S2. a blockchain network determines whether the downloader has permission to access the file, and if yes, creates a permission record allowing access to the file for the downloader in the blockchain network; S3. the downloader obtains meta-information of the file; S4. the downloader downloads all file fragments of the file according to the meta-information of the file; S5. the downloader assembles all the file fragments of the file into the complete file. The downloader undergoes multiple verifications, and is only allowed to access the file to be downloaded after all the verifications have been passed, thereby increasing file security. In addition, the file fragments are transmitted between the downloader and a storer via eMule, thereby increasing transmission stability.

Description

Blockchain-based storage system download method

Technical field

The present invention relates to the field of data storage technologies, and in particular, to a method for downloading a blockchain-based storage system.

Background technique

Cloud storage is a new concept extended and developed in the concept of cloud computing. It is an emerging network storage technology that refers to functions such as cluster applications, network technologies or distributed file systems. A large number of different types of storage devices work together through application software to jointly provide a system for data storage and service access functions.

When the core of computing and processing of cloud computing systems is the storage and management of large amounts of data, cloud computing systems need to be configured with a large number of storage devices, then the cloud computing system is transformed into a cloud storage system, so cloud storage is a data storage system. And management as the core of the cloud computing system. Simply put, cloud storage is an emerging solution for putting storage resources on the cloud for people to access. Users can easily access data at any time, anywhere, by connecting to the cloud via any networkable device.

Existing cloud storage relies on third-party large-scale storage to transmit and store data, such as 360 cloud disk, Baidu network disk, etc. These large-scale storage stores have all data backup and all user information, which is limited by the centralized architecture. Very vulnerable to a variety of security threats.

technical problem

Existing cloud storage relies on third-party large storage vendors to transfer and store data. These large storage stores have full data backup and all user information, and are limited to a centralized architecture, which is very vulnerable to various security threats.

The object of the present invention is to overcome the deficiencies of the prior art and provide a download method of a blockchain-based storage system, which verifies the downloader when downloading files, thereby improving security.

Technical solution

The object of the present invention is achieved by the following technical solutions: a download method of a blockchain-based storage system, including:

S1. The downloader initiates a download request for downloading the file;

S2. The blockchain network determines whether the downloader has permission to access the file, and if so, creates a permission record for the downloader to allow access to the file in the blockchain network;

S3. The downloader obtains meta information of the file;

S4. The downloader downloads all file fragments of the file according to the meta information of the file;

S5. The downloader assembles all the files of the file into a complete file.

Preferably, before the S1, the downloader further includes: the downloader checks the file that has been confirmed to be stored in the blockchain network.

Preferably, the download request includes a downloader's account name and a file ID.

Preferably, the blockchain network determines whether the downloader has the right to access the file by determining whether the downloader is an uploader of the file, or whether the uploader of the file specifies to share the file. Give the downloader.

Preferably, the meta information of the file includes fragmentation information, a file ID, and a storage ID of the file.

Preferably, the S4 comprises:

The downloader sends a request for downloading the corresponding file fragment to each storage of the file fragment of the file according to the meta information of the file;

The store verifies whether the downloader is allowed to download the corresponding file fragment through the blockchain network, and if so, the downloader downloads the corresponding file fragment from each storage.

Preferably, the storage of the file is performed by the e-mail between the store and the downloader.

Preferably, the blockchain-based storage system comprises:

An application layer, configured to generate an upload request by the uploader, generate a storage request by the store, and generate a download request by the downloader, and divide the file to be stored into a plurality of file fragments according to the upload request;

a blockchain network, configured to store meta-information of the upload request, the download request, and the file, and to perform permission verification on the downloader that initiates the download request;

The distributed storage network is configured to store the file fragmentation, and perform permission verification on the storage file when the file is uploaded, and perform permission verification on the downloader when the file is downloaded.

Preferably, the distributed storage network is a Kad distributed storage network.

Preferably, the upload request includes a split quantity of the file, a backup quantity of the file, a file description, a public key of the uploader, an account name of the uploader, an uploader ID, and a file ID, and the storage request includes an account of the storeer. Name, file ID, and file shard ID.

Beneficial effect

The beneficial effects of the invention are:

(1) In the present invention, the blockchain network verifies the downloader, and the downloader is allowed to access the file to be downloaded after the verification is passed, thereby improving the security of the file;

(2) The storage of the file fragment again verifies the authority of the downloader, further improving the security of the file;

(3) The file segment is transmitted between the downloader and the storage device by means of eMule, thereby improving the stability of the transmission;

(4) The important information such as metadata of the file is stored in the blockchain through the smart contract verification in the storage system. Since the data stored in the blockchain cannot be tampered with, the important information can be well protected. .

DRAWINGS

Figure 1 is a schematic flow chart of the present invention.

Embodiments of the invention

The technical solutions of the present invention will be described clearly and completely in combination with the embodiments. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without any inventive effort are within the scope of the present invention.

Explanation of terms:

Blockchain: A chained data structure that combines data blocks in sequential order in chronological order, and cryptographically guaranteed non-tamperable and unforgeable distributed ledgers.

Smart Contract: A set of commitments defined in digital form, including agreements where contract participants can execute these commitments. From a procedural perspective, a smart contract is a programming language programmed on a blockchain that triggers related operations when certain specified conditions are met.

Referring to FIG. 1, this embodiment provides a download method of a blockchain-based storage system.

As shown in FIG. 1, a download method of a blockchain-based storage system includes:

S1. The downloader initiates a download request for the download file. The specific process is as follows: The downloader initiates a download request in the application layer by calling a download request interface (get_file_access) of the blockchain network.

The download request includes the account name and file ID of the downloader.

Preferably, before the S1, the downloader further includes: the downloader checks the file that has been confirmed to be stored in the blockchain network. Confirm that the file to be downloaded has been confirmed to be stored.

S2. The blockchain network determines whether the downloader has permission to access the file, and if so, creates a permission record for the downloader to access the file in the blockchain network.

The download request interface calls the access interface (Access) of the file upload (File_Upload) contract, and the contract judges whether the downloader should be permitted to access the file according to the authentication contract set by the uploader of the file, and if so, downloads in the blockchain network. Create an access permission record.

S3. The downloader obtains meta information of the file.

The meta information of the file includes fragmentation information of the file, a file ID, and a store ID.

S4. The downloader downloads all file fragments of the file according to the meta information of the file. The S4 includes:

S41. The downloader sends a request for downloading the corresponding file fragment to each storage of the file fragment of the file according to the meta information of the file. Specifically, the downloader's eMule sends a file download request for each file fragment to the corresponding storage device according to the meta information of the file.

S42. The store verifies whether the downloader is allowed to download the corresponding file fragment through the blockchain network, and if so, the downloader downloads the corresponding file fragment from each storage. Specifically, after receiving the download request, the memory of the storage device invokes an authentication interface (download_validation) of the blockchain network to verify whether the downloader is allowed to download the file fragment, and if so, the downloader's power is from the storage user. The eDonkey downloads the file fragments.

S5. After all the file fragments of the file are downloaded, the downloader assembles all the files into a complete file.

The storage system includes an application layer, a blockchain network, and a distributed storage network.

The application layer is configured to generate an upload request by the uploader, generate a storage request by the store, and generate a download request by the downloader, and divide the file to be stored into a plurality of file fragments according to the upload request. The uploading request includes a split quantity of the file, a backup quantity of the file, a file description, a public key of the uploader, an account name of the uploader, an uploader ID, and a file ID, and may further include an authentication condition of the downloader; The storage request includes a storage person's account name, a file ID, and a file shard ID; the download request includes a downloader's account name and file ID.

The blockchain network is configured to store meta-information of the upload request, the download request, and the file, and to perform permission verification on the downloader that initiates the download request. The meta information of the file includes the fragmentation information of the file, the uploader's public key, and the store ID. The blockchain network is a blockchain network that supports smart contracts.

The blockchain network includes an upload request initiation interface, an upload request viewing interface, a storage request initiation interface, a storage request viewing interface, a permission download interface, a storage completion declaration interface, a storage completion declaration viewing interface, a confirmation storage declaration interface, and an authentication interface. And the download request interface.

The upload request initiation interface (store_file_to_network) is used by the uploader to initiate an upload request for storing the file to the distributed storage network; in some embodiments, the implementation process is: initiating an upload interface of a file upload (File_Upload) contract. The transaction, after the contract is verified, creates an upload request record for the uploader in the blockchain network.

The upload request viewing interface (blockchain_get_upload_requests) is used by the storage device to view all upload requests existing in the blockchain network.

The storage request initiation interface (store_file_piece) is used by the storage device to initiate a storage request for storing a file fragment; in some embodiments, the implementation process is: initiating a storage (Store) interface of a file upload (File_Upload) contract. Transaction, the contract is verified to create a storage request for the store in the blockchain network (Store) Request) record.

The storage request viewing interface (wallet_list_store_request_for_my_file) is used by the uploader to view a storage request related to the file to be uploaded by the uploader; in some embodiments, the implementation process is: taking the relevant storage request from the blockchain network according to the upload request. The interface queries the data in the blockchain network according to the file fragment ID, and lists related storage request information.

The permission download interface (wallet_allow_store_request) is used to grant a storage permission of a file fragment to a storage; in some embodiments, the implementation process is: recording a permission storage request in the blockchain network, so that the download is performed. Can be passed when authenticating.

The storage completion declaration interface (declare_piece_saved) is used by the store to initiate a statement that a certain file fragment storage has been completed; in some embodiments, the implementation process is: initiating a transaction in which the specified account has completed a specific The declaration of file shard storage.

The storage completion declaration viewing interface (blockchain_list_file_save_declare) is used to list the storage completion declarations related to the specified file appearing in the blockchain network.

The confirmation storage declaration interface (confirm_piece_saved) is used by the uploader to initiate a statement that the confirmed storage person completes storage of a certain file fragment;

The authentication interface (download_validation) is configured to perform download permission identification, and determine whether the storage or downloader has the right to download the corresponding file fragment.

The download request interface (get_file_access) is used by the downloader to initiate a request for obtaining access to a file; in some embodiments, the implementation process is: initiating a transaction of an acquisition interface that invokes a file upload contract, the contract is based on the uploader The set authentication condition determines whether the downloader is allowed to access the file, and if so, creates an access permission record for the downloader in the blockchain network.

The distributed storage network is a Kad distributed storage network.

The uploader, the storeer, and the downloader are all nodes of the distributed storage network, and are transferred between the store and the uploader, and between the store and the downloader.

The above is only a preferred embodiment of the present invention, and it should be understood that the present invention is not limited to the forms disclosed herein, and is not to be construed as being limited to the other embodiments, but may be used in various other combinations, modifications and environments. Modifications can be made by the techniques or knowledge of the above teachings or related art within the scope of the teachings herein. All changes and modifications made by those skilled in the art are intended to be within the scope of the appended claims.

Claims

A method for downloading a blockchain-based storage system, comprising:

S1. The downloader initiates a download request for downloading the file;

S2. The blockchain network determines whether the downloader has permission to access the file, and if so, creates a permission record for the downloader to allow access to the file in the blockchain network;

S3. The downloader obtains meta information of the file;

S4. The downloader downloads all file fragments of the file according to the meta information of the file;

S5. The downloader assembles all the files of the file into a complete file.
The method for downloading a blockchain-based storage system according to claim 1, wherein the S1 further comprises: the downloader viewing the file that has been confirmed to be stored in the blockchain network.
The method of downloading a blockchain-based storage system according to claim 1, wherein the download request includes an account name and a file ID of the downloader.
The method for downloading a blockchain-based storage system according to claim 1, wherein the blockchain network determines whether the downloader has the right to access the file: determining whether the downloader is The uploader of the file, or whether the uploader of the file specifies to share the file to the downloader.
The method for downloading a blockchain-based storage system according to claim 1, wherein the meta information of the file includes fragmentation information, a file ID, and a store ID of the file.
The method for downloading a blockchain-based storage system according to claim 1, wherein the S4 comprises:

The downloader sends a request for downloading the corresponding file fragment to each storage of the file fragment of the file according to the meta information of the file;

The store verifies whether the downloader is allowed to download the corresponding file fragment through the blockchain network, and if so, the downloader downloads the corresponding file fragment from each storage.
The method for downloading a blockchain-based storage system according to claim 6, wherein the storage of the file is performed by the e-mail between the store and the downloader.
The method for downloading a blockchain-based storage system according to claim 1, wherein the blockchain-based storage system comprises:

An application layer, configured to generate an upload request by the uploader, generate a storage request by the store, and generate a download request by the downloader, and divide the file to be stored into a plurality of file fragments according to the upload request;

a blockchain network, configured to store meta-information of the upload request, the download request, and the file, and to perform permission verification on the downloader that initiates the download request;

The distributed storage network is configured to store the file fragmentation, and perform permission verification on the storage file when the file is uploaded, and perform permission verification on the downloader when the file is downloaded.
The method for downloading a blockchain-based storage system according to claim 8, wherein the distributed storage network is a Kad distributed storage network.
The method for downloading a blockchain-based storage system according to claim 8, wherein the upload request includes a split number of files, a backup number of files, a file description, an uploader's public key, and an uploader. The account name, the uploader ID, and the file ID, the storage request including the account name, file ID, and file fragment ID of the store.