CN111159100A - Block chain file access method and device, computer equipment and storage medium - Google Patents
Block chain file access method and device, computer equipment and storage medium Download PDFInfo
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Abstract
The invention discloses a block chain file access method, a block chain file access device, computer equipment and a storage medium. The method comprises the following steps: storing a file to be stored of a user to a cloud storage server according to a preset file storage model, generating corresponding account book information, sending the account book information to a block chain network for storage, acquiring target account book information matched with an information retrieval request from the block chain network if the user information retrieval request is received, and acquiring a target file corresponding to the target account book information and feeding the target file back to the user. The invention is based on the cloud storage technology, can conveniently store and read the large file based on the block chain network, and solves the problem that the large file cannot be conveniently stored due to the limitation of the storage capacity of the traditional block chain network.
Description
Technical Field
The present invention relates to the field of computer technologies, and in particular, to a method and an apparatus for accessing a blockchain file, a computer device, and a storage medium.
Background
The information can be conveniently stored based on the block chain network, and the block chain network has the advantage of being not falsifiable. When the traditional block chain network stores data, the traditional block chain network is limited by the upper limit of the storage capacity of a block, only can store text information, and cannot store files exceeding the upper limit of the storage capacity. Therefore, the existing method for storing information based on the block chain technology has the problem that large files cannot be conveniently stored.
Disclosure of Invention
The embodiment of the invention provides a block chain file access method, a block chain file access device, computer equipment and a storage medium, and aims to solve the problem that a block chain technology in the prior art cannot conveniently store a large file.
In a first aspect, an embodiment of the present invention provides a method for accessing a blockchain file, including:
if a file storage request of a user is received, acquiring a file to be stored, storing the file to be stored to a cloud storage server according to a preset file storage model, and acquiring account book information corresponding to the file to be stored;
sending the account book information to a block chain network according to a preset broadcast rule so as to store the account book information;
if an information retrieval request of a user is received, taking account book information matched with the information retrieval request in the block chain network as target account book information;
acquiring a file corresponding to the target account book information in the cloud storage server as a target file according to the storage path information in the target account book information;
and feeding back the target file to the user.
In a second aspect, an embodiment of the present invention provides a device for accessing a blockchain file, including:
the account book information acquisition unit is used for acquiring a file to be stored if a file storage request of a user is received, storing the file to be stored to a cloud storage server according to a preset file storage model and acquiring account book information corresponding to the file to be stored;
the account book information sending unit is used for sending the account book information to a block chain network according to a preset broadcast rule so as to store the account book information;
the account book information retrieval unit is used for taking account book information matched with the information retrieval request in the block chain network as target account book information if the information retrieval request of a user is received;
a target file obtaining unit, configured to obtain, according to storage path information in the target account book information, a file in the cloud storage server corresponding to the target account book information as a target file;
and the target file feedback unit is used for feeding the target file back to the user.
In a third aspect, an embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the computer program, the block chain file access method described in the first aspect is implemented.
In a fourth aspect, the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and the computer program, when executed by a processor, causes the processor to execute the blockchain file access method according to the first aspect.
The embodiment of the invention provides a block chain file access method, a block chain file access device, computer equipment and a storage medium. Storing a file to be stored of a user to a cloud storage server according to a preset file storage model, generating corresponding account book information, sending the account book information to a block chain network for storage, acquiring target account book information matched with an information retrieval request from the block chain network if the user information retrieval request is received, and acquiring a target file corresponding to the target account book information and feeding the target file back to the user. By the method, the large file can be conveniently stored and read based on the block chain network, and the problem that the large file cannot be conveniently stored due to the limitation of storage capacity in the traditional block chain network is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart illustrating a method for accessing a blockchain file according to an embodiment of the present invention;
fig. 2 is a schematic view of an application scenario of the blockchain file access method according to an embodiment of the present invention;
FIG. 3 is a sub-flowchart of a method for accessing a blockchain file according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a method for accessing a blockchain file according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating a method for accessing a blockchain file according to an embodiment of the present invention;
FIG. 6 is a schematic view of another sub-process of a blockchain file access method according to an embodiment of the present invention;
FIG. 7 is a block diagram of a blockchain file access device according to an embodiment of the present invention;
FIG. 8 is a schematic block diagram of a sub-unit of a blockchain file access device according to an embodiment of the present invention;
FIG. 9 is another schematic block diagram of a blockchain file access device according to an embodiment of the present invention;
FIG. 10 is another schematic block diagram of a blockchain file access device according to an embodiment of the present invention;
FIG. 11 is a schematic block diagram of another sub-unit of a blockchain file access device according to an embodiment of the present invention;
FIG. 12 is a schematic block diagram of a computer device provided by an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
Referring to fig. 1, fig. 1 is a schematic flowchart illustrating a method for accessing a blockchain file according to an embodiment of the present invention;
fig. 2 is a schematic view of an application scenario of the method for accessing a blockchain file according to an embodiment of the present invention. The blockchain file access method is applied to the user terminal 10, the method is executed through application software installed in the user terminal 10, and the cloud storage server 20 and the blockchain network 30 realize transmission of data information through establishing network connection with the user terminal 10. The user terminal 10 is a terminal device for executing the block chain file access method to store and read a large file, such as a desktop computer, a notebook computer, a tablet computer, or a mobile phone, the cloud storage server 20 is a server side for acquiring and storing a file sent by the user terminal 10, and the block chain network 30 is a terminal network formed by a plurality of terminal devices in the internet based on an intelligent contract. Fig. 2 only illustrates that one user terminal 10 performs information transmission with the cloud storage server 20 and the blockchain network 30, and in practical applications, the blockchain network 30 and the cloud storage server 20 may perform information transmission with a plurality of user terminals 10 at the same time.
As shown in fig. 1, the method includes steps S110 to S150.
S110, if a file storage request of a user is received, obtaining a file to be stored, storing the file to be stored to a cloud storage server according to a preset file storage model, and obtaining account book information corresponding to the file to be stored.
If a file storage request of a user is received, a file to be stored is acquired, the file to be stored is stored to a cloud storage server according to a preset file storage model, and account book information corresponding to the file to be stored is acquired. The file storage request is request information for storing a corresponding file to be stored, which is input by a user, and the file to be stored is stored in the user terminal, and the file storage request includes pointing information corresponding to the file to be stored, such as a file name of the file to be stored, a storage path stored in the user terminal, and the like. The file storage model is a model used for storing files to be stored, the file storage model specifically comprises summary information generation rules and cloud storage nodes, and the files to be stored can be files in any format, including but not limited to text information, pictures, audio files, video files, compressed packets, documents and application programs. The summary information generation rule is used for generating summary information related to the file, the cloud storage node is node information corresponding to the cloud storage server, distributed storage can be performed on generated account book information in the block chain network, and the account book information comprises the summary information and storage path information of the file to be stored.
In an embodiment, as shown in fig. 3, step S110 includes sub-steps S111, S112 and S113.
And S111, generating summary information corresponding to the file to be stored according to the summary information generation rule.
And generating summary information corresponding to the file to be stored according to the summary information generation rule. The summary information generation rule can be realized by a hash operation, specifically, basic information corresponding to a file to be stored is obtained, the basic information includes a file name, a file format, a file specification, a modification time and the like, the file specification is the size of a storage space occupied by the file, the modification time is time information for modifying the content of the file at the last time, and the corresponding summary information is obtained by performing the hash operation on the basic information of the file to be stored according to the summary information generation rule, wherein the hash operation is a secure hash algorithm 256.
In this embodiment, that is, Hash (basic information) is digest information, that is, after performing Hash operation on basic information of a file to be stored, one digest information is obtained, for information of any length (calculated by bit), SHA256 (secure Hash algorithm 256) generates data of 32 bytes in length, and SHA256 always processes the information as a string of one bit (bit). When a file is received by the user terminal, this summary information can be used to verify whether the data has changed, i.e. to verify the integrity of the received file.
For example, Hash (file name: ABC, file format: JPG picture file, file specification: 133KB, modification time: 2019-05-01/14:40:40) ═ D15CB76F11D 5478A.
And S112, sending the file to be stored to a cloud storage server corresponding to the cloud storage node according to the cloud storage node, and recording storage path information of the file to be stored.
And sending the file to be stored to a cloud storage server corresponding to the cloud storage node according to a preset cloud storage node and recording storage path information of the file to be stored. The cloud storage nodes are node information corresponding to the cloud storage servers, files to be stored can be sent to the corresponding cloud storage servers through the cloud storage nodes to be stored, storage path information is storage addresses of the files to be stored in the cloud storage servers, the upper limit of storage capacity of each block chain node in a traditional block chain network is small (1MB-10MB), the block chain nodes are specific storage spaces distributed for storing account book information in each user terminal, and the cloud storage servers can be set to store the large files in order to solve the problem that the traditional block chain network cannot store the large files. Specifically, for an application scenario of a private chain, such as a blockchain network built inside a large enterprise, the cloud storage server may be a public server that is set in the enterprise and is accessible to all user terminals; for an application scenario of a federation chain, such as a blockchain network constructed by multiple enterprises, the cloud storage server may be a NAS network disk provided in the internet and accessible to all user terminals. The user terminal sends the file to be stored to the cloud storage server, and the cloud storage server stores the file to be stored and feeds corresponding storage path information back to the user terminal.
For example, the storage path information corresponding to a certain file to be stored is shown in table 1.
| File name | Storing path information |
| ABC | /171.62.33.01/folder01/ABC.JPG |
Table 1S113, using the summary information and the storage path information as the book information of the file to be stored.
And taking the abstract information and the storage path information as the account book information of the file to be stored. The obtained abstract information and the storage path information are both character information, and the occupied storage space is extremely small, so that the abstract information and the storage path information can be merged and then stored as the account book information of the file to be stored.
For example, the ledger information obtained by merging the summary information and the storage path information of the file to be stored is: d15CB76F11D 5478A; JPG/171.62.33.01/folder 01/ABC.
And S120, sending the account book information to a block chain network according to a preset broadcast rule so as to store the account book information.
And sending the account book information to a block chain network according to a preset broadcast rule so as to store the account book information. The block chain network includes a large number of block chain link points, and in order to implement distributed storage of the obtained account book information, the account book information needs to be broadcast to the block chain network through a broadcast rule, so as to implement storage of the account book information in the block chain nodes of the block chain network. Specifically, the broadcast rule includes a plurality of node addresses, and each node address corresponds to a block chain node in the block chain network.
The method comprises the following specific steps: and sending the book information to a block chain link point corresponding to the node address in the block chain network according to the node address in the broadcast rule so as to store the book information in the block chain network. The node address in the broadcast rule may be an IP address corresponding to a block link point preset by a user, or an IP address corresponding to a historical block link point which is recorded in the user terminal and has undergone data information transmission between block link nodes corresponding to the current user terminal. After the account book information is broadcasted according to the broadcasting rule, the account book information is stored in a plurality of block chain nodes in a backup mode, if the account book information stored in one block chain node is modified, the modified account book information can be verified through a plurality of pieces of account book information stored in other block chain nodes in a backup mode, and therefore the account book information stored in any block chain node is prevented from being tampered.
In one embodiment, as shown in FIG. 4, step S120 is preceded by step S120 a.
And S120a, storing the book information in a local block chain node in the user terminal.
And storing the account book information in a local block chain node in the user terminal. When the account book information is stored, the account book information can be stored in a local block chain node of a current user terminal, each block chain node in a block chain network corresponds to one user terminal, the user terminal used by the user at present also corresponds to one block chain node in the block chain network, the account book information is stored in the block chain node of the current user terminal, data information transmission does not need to be carried out through the network, and therefore the process does not involve sending the account book information.
And S130, if an information retrieval request of a user is received, taking the account book information matched with the information retrieval request in the block chain network as target account book information.
And if an information retrieval request of a user is received, taking the account book information matched with the information retrieval request in the block chain network as target account book information. The information retrieval request comprises a file name and a file type corresponding to a file required to be acquired by a user, the storage path information of each account book information comprises the file name and the file type of the corresponding file, and the stored account book information is retrieved based on the information contained in the information retrieval request to obtain the account book information matched with the information retrieval request. Specifically, the ledger information stored in the block chain node corresponding to the current user terminal can be retrieved through the information retrieval request, so that the ledger information matched with the information retrieval request is used as the target ledger information. In the process of obtaining the target account book information, the information retrieval request can be broadcasted to other block chain nodes in the block chain network, backup account book information fed back by the other block chain nodes is obtained, the retrieved target account book information is verified according to the backup account book information, if the verification is passed, the target account book information is processed in the next step, and if the verification is not passed, wrong prompt information of the target account book information is fed back to the user.
S140, acquiring a file corresponding to the target account book information in the cloud storage server as a target file according to the storage path information in the target account book information.
And acquiring a file corresponding to the target account book information in the cloud storage server as a target file according to the storage path information in the target account book information. Each account book information comprises abstract information and storage path information of a corresponding file, and after the target account book information is obtained, the corresponding file in the cloud storage server can be obtained according to the storage path information contained in the target account book information, so that the target file is obtained.
S150, feeding the target file back to the user.
And feeding back the target file to the user so as to realize that the corresponding target file is obtained through the user terminal and fed back to the user of the user terminal.
In one embodiment, as shown in fig. 5, step S150 further includes steps S151 and S152.
And S151, verifying whether the target file is consistent with the target account book information or not according to the summary information generation rule to obtain a verification result.
And verifying whether the target file is consistent with the target account book information or not according to the abstract information generation rule to obtain a verification result. In order to ensure that the file stored in the cloud storage server is not tampered, before the target file is fed back to the user, whether the target file is consistent with the target account book information or not can be verified through the abstract information generation rule, and if the verification result is yes, the target file is indicated to be not tampered; if the verification result is negative, the target file is indicated to be tampered, and prompt information that the target file is tampered can be fed back to the user at the moment. The security of the file stored in the cloud storage server can be ensured through the verification process, and the problem of insufficient security of the file caused by the fact that the file is modified is solved.
In one embodiment, as shown in fig. 6, step S151 includes sub-steps S1511 and S1512.
S1511, generating the summary information to be verified corresponding to the target file according to the summary information generating rule.
And generating the summary information to be verified corresponding to the target file according to the summary information generation rule. Specifically, the basic information of the target file is obtained, and the hash operation is performed on the obtained basic information according to the summary information generation rule to obtain the corresponding summary information to be verified, where the basic information includes a file name, a file format, a file specification, a modification time, and the like, and a specific method for generating the summary information to be verified is the same as the method for generating the summary information in the above step, and is not described herein again.
S1512, verifying whether the summary information to be verified is consistent with the summary information in the target book information to obtain a verification result.
And verifying whether the summary information to be verified is consistent with the summary information in the target account book information to obtain a verification result. Specifically, the method for obtaining the summary information in the target account book information is the same, and if two pieces of basic information of the same file are the same, the result obtained by performing hash operation on the two pieces of basic information is the same, so that whether the target file is modified can be determined based on the verification result of whether the summary information in the target account book information is consistent with the summary information to be verified, and if the obtained target file is modified, even if information such as the file name, the file format, the file specification and the like of the target file is not changed, the modification time of the target file is changed, after calculation is performed through the same hash operation, the corresponding summary information to be verified is inconsistent with the summary information in the corresponding target account book information, that is, the verification result is determined to be no.
S152, if the verification result is yes, feeding the target file back to the user.
If the verification result is yes, the target file is fed back to the user, that is, the step S150 is continuously executed. If the verification result is that the target file stored in the cloud storage server is not modified, the target file is safe and reliable, and the target file can be fed back to the user. If the verification result is that the target file stored in the cloud storage server is not modified, the target file is indicated to be modified, the target file has risks, and prompt information that the target file is modified can be fed back to the user to prompt the user.
In the block chain file access method provided by the embodiment of the invention, a file to be stored of a user is stored in a cloud storage server according to a preset file storage model, corresponding account book information is generated and sent to a block chain network for storage, if a user information retrieval request is received, target account book information matched with the information retrieval request is obtained from the block chain network, and a target file corresponding to the target account book information is obtained and fed back to the user. By the method, the large file can be conveniently stored and read based on the block chain network, and the problem that the large file cannot be conveniently stored due to the limitation of storage capacity in the traditional block chain network is solved.
The embodiment of the invention also provides a block chain file access device, which is used for executing any embodiment of the block chain file access method. Specifically, referring to fig. 7, fig. 7 is a schematic block diagram of a blockchain file access device according to an embodiment of the present invention. The blockchain file access device may be configured in the user terminal 10.
As shown in fig. 7, the blockchain file access device 100 includes an account book information obtaining unit 110, an account book information sending unit 120, an account book information retrieving unit 130, a target file obtaining unit 140, and a target file feedback unit 150.
The account book information obtaining unit 110 is configured to, if a file storage request of a user is received, obtain a file to be stored, store the file to be stored to a cloud storage server according to a preset file storage model, and obtain account book information corresponding to the file to be stored.
If a file storage request of a user is received, a file to be stored is acquired, the file to be stored is stored to a cloud storage server according to a preset file storage model, and account book information corresponding to the file to be stored is acquired. The file storage request is request information for storing a corresponding file to be stored, which is input by a user, and the file to be stored is stored in the user terminal, and the file storage request includes pointing information corresponding to the file to be stored, such as a file name of the file to be stored, a storage path stored in the user terminal, and the like. The file storage model is a model used for storing files to be stored, the file storage model specifically comprises summary information generation rules and cloud storage nodes, and the files to be stored can be files in any format, including but not limited to text information, pictures, audio files, video files, compressed packets, documents and application programs. The summary information generation rule is used for generating summary information related to the file, the cloud storage node is node information corresponding to the cloud storage server, distributed storage can be performed on generated account book information in the block chain network, and the account book information comprises the summary information and storage path information of the file to be stored.
In another embodiment of the present invention, as shown in fig. 8, the ledger information acquisition unit 110 includes sub-units: a summary information generating unit 111, a file storage unit 112, and a file ledger information acquiring unit 113.
And the summary information generating unit 111 is configured to generate summary information corresponding to the file to be stored according to the summary information generating rule.
And generating summary information corresponding to the file to be stored according to the summary information generation rule. The summary information generation rule can be realized by a hash operation, specifically, basic information corresponding to a file to be stored is obtained, the basic information includes a file name, a file format, a file specification, a modification time and the like, the file specification is the size of a storage space occupied by the file, the modification time is time information for modifying the content of the file at the last time, and the corresponding summary information is obtained by performing the hash operation on the basic information of the file to be stored according to the summary information generation rule, wherein the hash operation is a secure hash algorithm 256.
In this embodiment, that is, Hash (basic information) is digest information, that is, after performing Hash operation on basic information of a file to be stored, one digest information is obtained, for information of any length (calculated by bit), SHA256 (secure Hash algorithm 256) generates data of 32 bytes in length, and SHA256 always processes the information as a string of one bit (bit). When a file is received by the user terminal, this summary information can be used to verify whether the data has changed, i.e. to verify the integrity of the received file.
The file storage unit 112 is configured to send the file to be stored to a cloud storage server corresponding to the cloud storage node according to the cloud storage node, and record storage path information of the file to be stored.
And sending the file to be stored to a cloud storage server corresponding to the cloud storage node according to a preset cloud storage node and recording storage path information of the file to be stored. The cloud storage nodes are node information corresponding to the cloud storage servers, files to be stored can be sent to the corresponding cloud storage servers through the cloud storage nodes to be stored, storage path information is storage addresses of the files to be stored in the cloud storage servers, the upper limit of storage capacity of each block chain node in a traditional block chain network is small (1MB-10MB), the block chain nodes are specific storage spaces distributed for storing account book information in each user terminal, and the cloud storage servers can be set to store the large files in order to solve the problem that the traditional block chain network cannot store the large files. Specifically, for an application scenario of a private chain, such as a blockchain network built inside a large enterprise, the cloud storage server may be a public server that is set in the enterprise and is accessible to all user terminals; for an application scenario of a federation chain, such as a blockchain network constructed by multiple enterprises, the cloud storage server may be a NAS network disk provided in the internet and accessible to all user terminals. The user terminal sends the file to be stored to the cloud storage server, and the cloud storage server stores the file to be stored and feeds corresponding storage path information back to the user terminal.
A file account book information obtaining unit 113, configured to use the summary information and the storage path information as account book information of the file to be stored.
And taking the abstract information and the storage path information as the account book information of the file to be stored. The obtained abstract information and the storage path information are both character information, and the occupied storage space is extremely small, so that the abstract information and the storage path information can be merged and then stored as the account book information of the file to be stored.
The account book information sending unit 120 is configured to send the account book information to a block chain network according to a preset broadcast rule to store the account book information.
And sending the account book information to a block chain network according to a preset broadcast rule so as to store the account book information. The block chain network includes a large number of block chain link points, and in order to implement distributed storage of the obtained account book information, the account book information needs to be broadcast to the block chain network through a broadcast rule, so as to implement storage of the account book information in the block chain nodes of the block chain network. Specifically, the broadcast rule includes a plurality of node addresses, and each node address corresponds to a block chain node in the block chain network.
The method comprises the following specific steps: and sending the book information to a block chain link point corresponding to the node address in the block chain network according to the node address in the broadcast rule so as to store the book information in the block chain network. The node address in the broadcast rule may be an IP address corresponding to a block link point preset by a user, or an IP address corresponding to a historical block link point which is recorded in the user terminal and has undergone data information transmission between block link nodes corresponding to the current user terminal. After the account book information is broadcasted according to the broadcasting rule, the account book information is stored in a plurality of block chain nodes in a backup mode, if the account book information stored in one block chain node is modified, the modified account book information can be verified through a plurality of pieces of account book information stored in other block chain nodes in a backup mode, and therefore the account book information stored in any block chain node is prevented from being tampered.
In another embodiment of the present invention, as shown in fig. 9, the block chain file access apparatus 100 further includes a sub-unit: ledger information local storage unit 120 a.
An account book information local storage unit 120a, configured to store the account book information in a local blockchain node in the user terminal.
And storing the account book information in a local block chain node in the user terminal. When the account book information is stored, the account book information can be stored in a local block chain node of a current user terminal, each block chain node in a block chain network corresponds to one user terminal, the user terminal used by the user at present also corresponds to one block chain node in the block chain network, the account book information is stored in the block chain node of the current user terminal, data information transmission does not need to be carried out through the network, and therefore the process does not involve sending the account book information.
The account book information retrieving unit 130 is configured to, if an information retrieval request of a user is received, take account book information in the blockchain network that matches the information retrieval request as target account book information.
And if an information retrieval request of a user is received, taking the account book information matched with the information retrieval request in the block chain network as target account book information. The information retrieval request comprises a file name and a file type corresponding to a file required to be acquired by a user, the storage path information of each account book information comprises the file name and the file type of the corresponding file, and the stored account book information is retrieved based on the information contained in the information retrieval request to obtain the account book information matched with the information retrieval request. Specifically, the ledger information stored in the block chain node corresponding to the current user terminal can be retrieved through the information retrieval request, so that the ledger information matched with the information retrieval request is used as the target ledger information. In the process of obtaining the target account book information, the information retrieval request can be broadcasted to other block chain nodes in the block chain network, backup account book information fed back by the other block chain nodes is obtained, the retrieved target account book information is verified according to the backup account book information, if the verification is passed, the target account book information is processed in the next step, and if the verification is not passed, wrong prompt information of the target account book information is fed back to the user.
A target file obtaining unit 140, configured to obtain, according to the storage path information in the target account book information, a file in the cloud storage server corresponding to the target account book information as a target file.
And acquiring a file corresponding to the target account book information in the cloud storage server as a target file according to the storage path information in the target account book information. Each account book information comprises abstract information and storage path information of a corresponding file, and after the target account book information is obtained, the corresponding file in the cloud storage server can be obtained according to the storage path information contained in the target account book information, so that the target file is obtained.
A target file feedback unit 150, configured to feed back the target file to the user.
And feeding back the target file to the user so as to realize that the corresponding target file is obtained through the user terminal and fed back to the user of the user terminal.
In another embodiment of the present invention, as shown in fig. 10, the block chain file access apparatus 100 further includes a sub-unit: a target document authentication unit 151 and a feedback execution unit 152.
And a target file verifying unit 151, configured to verify whether the target file is consistent with the target ledger information according to the digest information generation rule to obtain a verification result.
And verifying whether the target file is consistent with the target account book information or not according to the abstract information generation rule to obtain a verification result. In order to ensure that the file stored in the cloud storage server is not tampered, before the target file is fed back to the user, whether the target file is consistent with the target account book information or not can be verified through the abstract information generation rule, and if the verification result is yes, the target file is indicated to be not tampered; if the verification result is negative, the target file is indicated to be tampered, and prompt information that the target file is tampered can be fed back to the user at the moment. The security of the file stored in the cloud storage server can be ensured through the verification process, and the problem of insufficient security of the file caused by the fact that the file is modified is solved.
In other embodiments of the present invention, as shown in fig. 11, the target document verification unit 151 includes sub-units: a to-be-verified digest information acquisition unit 1511 and a to-be-verified digest information verification unit 1512.
And a to-be-verified summary information obtaining unit 1511, configured to generate to-be-verified summary information corresponding to the target file according to the summary information generation rule.
And generating the summary information to be verified corresponding to the target file according to the summary information generation rule. Specifically, the basic information of the target file is obtained, and the hash operation is performed on the obtained basic information according to the summary information generation rule to obtain the corresponding summary information to be verified, where the basic information includes a file name, a file format, a file specification, a modification time, and the like, and a specific method for generating the summary information to be verified is the same as the method for generating the summary information in the above step, and is not described herein again.
The to-be-verified summary information verifying unit 1512 is configured to verify whether the to-be-verified summary information is consistent with the summary information in the target ledger information to obtain a verification result.
And verifying whether the summary information to be verified is consistent with the summary information in the target account book information to obtain a verification result. Specifically, the method for obtaining the summary information in the target account book information is the same, and if two pieces of basic information of the same file are the same, the result obtained by performing hash operation on the two pieces of basic information is the same, so that whether the target file is modified can be determined based on the verification result of whether the summary information in the target account book information is consistent with the summary information to be verified, and if the obtained target file is modified, even if information such as the file name, the file format, the file specification and the like of the target file is not changed, the modification time of the target file is changed, after calculation is performed through the same hash operation, the corresponding summary information to be verified is inconsistent with the summary information in the corresponding target account book information, that is, the verification result is determined to be no.
A feedback executing unit 152, configured to feed back the target file to the user if the verification result is yes.
If the verification result is yes, the target file is fed back to the user, that is, the step corresponding to the target file feedback unit 150 is continuously executed. If the verification result is that the target file stored in the cloud storage server is not modified, the target file is safe and reliable, and the target file can be fed back to the user. If the verification result is that the target file stored in the cloud storage server is not modified, the target file is indicated to be modified, the target file has risks, and prompt information that the target file is modified can be fed back to the user to prompt the user.
The block chain file access device provided by the embodiment of the invention is used for executing the block chain file access method, and the file to be stored of the user is stored to the cloud storage server according to the preset file storage model, the corresponding book information is generated, the book information is sent to the block chain network for storage, if the user information retrieval request is received, the target book information matched with the information retrieval request is obtained from the block chain network, and the target file corresponding to the target book information is obtained and fed back to the user. By the method, the large file can be conveniently stored and read based on the block chain network, and the problem that the large file cannot be conveniently stored due to the limitation of storage capacity in the traditional block chain network is solved.
The above-described blockchain file access means may be implemented in the form of a computer program which can be run on a computer device as shown in fig. 12.
Referring to fig. 12, fig. 12 is a schematic block diagram of a computer device according to an embodiment of the present invention.
Referring to fig. 12, the computer device 500 includes a processor 502, memory, and a network interface 505 connected by a system bus 501, where the memory may include a non-volatile storage medium 503 and an internal memory 504.
The non-volatile storage medium 503 may store an operating system 5031 and a computer program 5032. The computer program 5032, when executed, causes the processor 502 to perform the blockchain file access method.
The processor 502 is used to provide computing and control capabilities that support the operation of the overall computer device 500.
The memory 504 provides an environment for the computer program 5032 in the non-volatile storage medium 503 to run, and when the computer program 5032 is executed by the processor 502, the processor 502 can execute the blockchain file access method.
The network interface 505 is used for network communication, such as providing transmission of data information. Those skilled in the art will appreciate that the configuration shown in fig. 12 is a block diagram of only a portion of the configuration associated with aspects of the present invention and is not intended to limit the computing device 500 to which aspects of the present invention may be applied, and that a particular computing device 500 may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
Wherein the processor 502 is configured to run the computer program 5032 stored in the memory to implement the following functions: if a file storage request of a user is received, acquiring a file to be stored, storing the file to be stored to a cloud storage server according to a preset file storage model, and acquiring account book information corresponding to the file to be stored; sending the account book information to a block chain network according to a preset broadcast rule so as to store the account book information; if an information retrieval request of a user is received, taking account book information matched with the information retrieval request in the block chain network as target account book information; acquiring a file corresponding to the target account book information in the cloud storage server as a target file according to the storage path information in the target account book information; and feeding back the target file to the user.
In an embodiment, when executing the steps of acquiring a file to be stored if a file storage request of a user is received, storing the file to be stored in a cloud storage server according to a preset file storage model, and acquiring account book information corresponding to the file to be stored, the processor 502 executes the following operations: generating abstract information corresponding to the file to be stored according to the abstract information generation rule; sending the file to be stored to a cloud storage server corresponding to the cloud storage node according to the cloud storage node and recording storage path information of the file to be stored; and taking the abstract information and the storage path information as the account book information of the file to be stored.
In an embodiment, before performing the step of sending the ledger information to a blockchain network according to a preset broadcast rule to store the ledger information, the processor 502 further performs the following operations: and storing the account book information in a local block chain node in the user terminal.
In one embodiment, the processor 502 also performs the following operations: verifying whether the target file is consistent with the target account book information or not according to the abstract information generation rule to obtain a verification result; and if the verification result is yes, feeding back the target file to the user.
In an embodiment, when performing the step of verifying whether the target file is consistent with the target ledger information according to the summary information generation rule to obtain a verification result, the processor 502 performs the following operations: generating summary information to be verified corresponding to the target file according to the summary information generation rule; and verifying whether the summary information to be verified is consistent with the summary information in the target account book information to obtain a verification result.
Those skilled in the art will appreciate that the embodiment of a computer device illustrated in fig. 12 does not constitute a limitation on the specific construction of the computer device, and that in other embodiments a computer device may include more or fewer components than those illustrated, or some components may be combined, or a different arrangement of components. For example, in some embodiments, the computer device may only include a memory and a processor, and in such embodiments, the structures and functions of the memory and the processor are consistent with those of the embodiment shown in fig. 12, and are not described herein again.
It should be understood that, in the embodiment of the present invention, the Processor 502 may be a Central Processing Unit (CPU), and the Processor 502 may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and the like. Wherein a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
In another embodiment of the invention, a computer-readable storage medium is provided. The computer readable storage medium may be a non-volatile computer readable storage medium. The computer-readable storage medium stores a computer program, wherein the computer program when executed by a processor implements the steps of: if a file storage request of a user is received, acquiring a file to be stored, storing the file to be stored to a cloud storage server according to a preset file storage model, and acquiring account book information corresponding to the file to be stored; sending the account book information to a block chain network according to a preset broadcast rule so as to store the account book information; if an information retrieval request of a user is received, taking account book information matched with the information retrieval request in the block chain network as target account book information; acquiring a file corresponding to the target account book information in the cloud storage server as a target file according to the storage path information in the target account book information; and feeding back the target file to the user.
In an embodiment, the step of acquiring a file to be stored if a file storage request of a user is received, storing the file to be stored in a cloud storage server according to a preset file storage model, and acquiring account book information corresponding to the file to be stored includes: generating abstract information corresponding to the file to be stored according to the abstract information generation rule; sending the file to be stored to a cloud storage server corresponding to the cloud storage node according to the cloud storage node and recording storage path information of the file to be stored; and taking the abstract information and the storage path information as the account book information of the file to be stored.
In an embodiment, before the step of sending the ledger information to a blockchain network according to a preset broadcast rule to store the ledger information, the method further includes: and storing the account book information in a local block chain node in the user terminal.
In one embodiment, the method further comprises: verifying whether the target file is consistent with the target account book information or not according to the abstract information generation rule to obtain a verification result; and if the verification result is yes, feeding back the target file to the user.
In an embodiment, the step of verifying whether the target file is consistent with the target ledger information according to the summary information generation rule to obtain a verification result includes: generating summary information to be verified corresponding to the target file according to the summary information generation rule; and verifying whether the summary information to be verified is consistent with the summary information in the target account book information to obtain a verification result.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses, devices and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided by the present invention, it should be understood that the disclosed apparatus, device and method can be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only a logical division, and there may be other divisions when the actual implementation is performed, or units having the same function may be grouped into one unit, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention essentially contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product stored in a computer-readable storage medium, which includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned computer-readable storage media comprise: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a magnetic disk, or an optical disk.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A method for accessing a blockchain file, comprising:
if a file storage request of a user is received, acquiring a file to be stored, storing the file to be stored to a cloud storage server according to a preset file storage model, and acquiring account book information corresponding to the file to be stored;
sending the account book information to a block chain network according to a preset broadcast rule so as to store the account book information;
if an information retrieval request of a user is received, taking account book information matched with the information retrieval request in the block chain network as target account book information;
acquiring a file corresponding to the target account book information in the cloud storage server as a target file according to the storage path information in the target account book information;
and feeding back the target file to the user.
2. The method according to claim 1, wherein the file storage model includes a summary information generation rule and a cloud storage node, and the storing the file to be stored according to a preset file storage model and acquiring the ledger information corresponding to the file to be stored includes:
generating abstract information corresponding to the file to be stored according to the abstract information generation rule;
sending the file to be stored to a cloud storage server corresponding to the cloud storage node according to the cloud storage node and recording storage path information of the file to be stored;
and taking the abstract information and the storage path information as the account book information of the file to be stored.
3. The blockchain file access method according to claim 1, before sending the ledger information to a blockchain network according to a preset broadcast rule for storing the ledger information, further comprising:
and storing the account book information in a local block chain node in the user terminal.
4. The blockchain file access method of claim 2, further comprising:
verifying whether the target file is consistent with the target account book information or not according to the abstract information generation rule to obtain a verification result;
and if the verification result is yes, feeding back the target file to the user.
5. The blockchain file access method according to claim 4, wherein the verifying whether the target file is consistent with the target ledger information according to the summary information generation rule to obtain a verification result includes:
generating summary information to be verified corresponding to the target file according to the summary information generation rule;
and verifying whether the summary information to be verified is consistent with the summary information in the target account book information to obtain a verification result.
6. A blockchain file access apparatus, comprising:
the account book information acquisition unit is used for acquiring a file to be stored if a file storage request of a user is received, storing the file to be stored to a cloud storage server according to a preset file storage model and acquiring account book information corresponding to the file to be stored;
the account book information sending unit is used for sending the account book information to a block chain network according to a preset broadcast rule so as to store the account book information;
the account book information retrieval unit is used for taking account book information matched with the information retrieval request in the block chain network as target account book information if the information retrieval request of a user is received;
a target file obtaining unit, configured to obtain, according to storage path information in the target account book information, a file in the cloud storage server corresponding to the target account book information as a target file;
and the target file feedback unit is used for feeding the target file back to the user.
7. The blockchain file access device according to claim 6, wherein the ledger information acquisition unit includes:
the abstract information generating unit is used for generating abstract information corresponding to the file to be stored according to the abstract information generating rule;
the file storage unit is used for sending the file to be stored to a cloud storage server corresponding to the cloud storage node according to the cloud storage node and recording storage path information of the file to be stored;
and the file account book information acquisition unit is used for taking the abstract information and the storage path information as the account book information of the file to be stored.
8. The blockchain file access device of claim 6, further comprising:
and the account book information local storage unit is used for storing the account book information in a local block link node in the user terminal.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the blockchain file access method of any one of claims 1 to 5 when executing the computer program.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when executed by a processor, causes the processor to perform the blockchain file access method according to any one of claims 1 to 5.
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| CN201911150248.5A CN111159100A (en) | 2019-11-21 | 2019-11-21 | Block chain file access method and device, computer equipment and storage medium |
| PCT/CN2020/105414 WO2021098277A1 (en) | 2019-11-21 | 2020-07-29 | Blockchain file access method and apparatus, computer device and storage medium |
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| CN201911150248.5A CN111159100A (en) | 2019-11-21 | 2019-11-21 | Block chain file access method and device, computer equipment and storage medium |
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