CN113378207B - Block chain-based data file consensus method, system, device and medium - Google Patents
Block chain-based data file consensus method, system, device and medium Download PDFInfo
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- CN113378207B CN113378207B CN202110793794.1A CN202110793794A CN113378207B CN 113378207 B CN113378207 B CN 113378207B CN 202110793794 A CN202110793794 A CN 202110793794A CN 113378207 B CN113378207 B CN 113378207B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/45—Structures or tools for the administration of authentication
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- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
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- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
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- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
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Abstract
The invention discloses a block chain-based data file consensus method, a block chain-based data file consensus system, a block chain-based data file consensus device and a block chain-based data file consensus medium, and relates to the field of block chains; the second node receives and verifies the first block, acquires the data file in the first block after the verification is passed, and generates a hash chain according to a preset hash algorithm; the second node receives the encrypted data file, and after decryption, a hash chain of the data file is obtained through a preset hash algorithm; and comparing the decrypted hash chain with the hash chain acquired in the first block, if the hash chain is consistent with the hash chain acquired in the first block, uploading the corresponding data file to a second block, wherein the second block is used for storing the data file to a preset storage position and commonly recognizing the signature. The method can quickly obtain the consensus result, has high calculation efficiency and higher reliability, and effectively improves the use efficiency.
Description
Technical Field
The invention relates to the field of data security, in particular to a block chain-based data file consensus method, a block chain-based data file consensus system, a block chain-based data file consensus device and a block chain-based data file consensus medium.
Background
Block chains can be generally classified into public chains, federation chains, and private chains, depending on access rights. The public chain refers to a block chain which can be accessed by anyone according to a protocol and is in consensus; the alliance chain is a block chain of which the consensus process is controlled by a preselected node; private chain refers to a chain of blocks that are authorized and fully controlled by an organization.
Currently, data files are saved by uploading the data files to a shared file system in a blockchain network, and simultaneously saving hashes of the data files and storage paths of the files to the blockchain. However, since the data file is uploaded to the block chain after the collected data is landed into the file by the collecting device, the link of landing the data before uploading is easy to tamper the data content, i.e. the data file is not trusted before the chain is linked.
Disclosure of Invention
The invention aims to provide a consensus method aiming at data files, and the confidence level of data is improved.
In order to achieve the above object, the present invention provides a block chain-based data file consensus method, including:
a first node in a block chain network packs a data file into a first block and adds the first block to a block chain of the first node, and broadcasts the first block in the block chain network;
a first node in the block chain network sends a consensus request, encrypts a data file and sends the encrypted data file to a second node;
a second node in the block chain network receives and verifies the first block, acquires a data file in the first block after the first block is verified, and generates a hash chain according to a preset hash algorithm;
a second node in the block chain network receives the encrypted data file, decrypts the data file, and obtains a hash chain of the data file through a preset hash algorithm;
and comparing the decrypted hash chain with the hash chain acquired in the first block, if the hash chain is consistent with the hash chain acquired in the first block, uploading the corresponding data file to a second block, wherein the second block is used for storing the data file to a preset storage position and commonly recognizing the signature.
The method for encrypting the data file and then sending the data file to the second node by the first node specifically comprises the following steps:
the first node encrypts the data file by adopting a symmetric encryption algorithm according to the encryption key to obtain a ciphertext file, encrypts the decryption key and stores the encrypted decryption key in the block chain;
storing the ciphertext file, the signature of the first node on the second block, and the block size of the second block in the second block;
the first node generates an ID parameter of the second block;
the second node requests the decryption key and the ID parameter of the encrypted file from the first node, the first node verifies the identity information of the second node, and after the verification is passed, the decryption key and the ID parameter are sent through a secure channel;
and the second node acquires the storage position information of the second block according to the decryption key and the ID parameter and decrypts the encrypted file.
The method includes the steps that a second node in a block chain network receives and verifies a first block, after the first block is verified, a data file in the first block is obtained, and a hash chain is generated according to a preset hash algorithm, and specifically includes the following steps:
when the second node receives the first block;
the first node acquires identity coding information of the second node;
if the identity code information of the second node is consistent with the identity code information prestored in the first node, the verification is passed, and the second node acquires a first block;
if the identity code information of the second node is inconsistent with the identity code information prestored in the first node, the verification is not passed, and the second node acquires the first block again.
The block chain network also comprises a plurality of consensus nodes, and after the second node is in consensus signature, the second block is sent to other consensus nodes in a broadcast mode.
Corresponding to the method in the invention, the invention also provides a data file consensus system based on the block chain, which comprises a first processing module, a second processing module, a third processing module, a fourth processing module and a comparison module;
the first processing module is used for a first node in a block chain network to pack a data file into a first block and add the first block into a block chain of the first node, and the first block is broadcasted in the block chain network;
the second processing module is used for sending a consensus request by a first node in the block chain network, and the first node encrypts a data file and sends the encrypted data file to a second node;
the third processing module is used for receiving and verifying the first block by a second node in the block chain network, acquiring a data file in the first block after the first block is verified, and generating a hash chain according to a preset hash algorithm;
the fourth processing module is used for receiving the encrypted data file by the second node in the block chain network, and acquiring a hash chain of the data file through a preset hash algorithm after decryption;
the comparison module is used for comparing the decrypted hash chain with the hash chain acquired in the first block, if the hash chain is consistent with the hash chain acquired in the first block, the corresponding data file is uploaded to the second block, and the second block is used for storing the data file to a preset storage position and commonly recognizing the signature.
The system also comprises an encryption module and a decryption module, wherein the encryption module is used for encrypting the data file; the decryption module is used for decrypting the data file.
Corresponding to the method in the present invention, the present invention further provides an electronic apparatus, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the above block chain-based data file consensus method when executing the computer program.
Corresponding to the method in the present invention, the present invention further provides a storage medium, where the computer readable storage medium stores a computer program, and the computer program, when executed by a processor, implements the steps of the above block chain-based data file consensus method.
One or more technical schemes provided by the invention at least have the following technical effects or advantages: the method can quickly obtain the consensus result, has high calculation efficiency and higher reliability, and effectively improves the use efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic flow chart of a block chain-based data file consensus method;
fig. 2 is a schematic diagram illustrating a block chain-based data file consensus system.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflicting with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
Referring to fig. 1, fig. 1 is a schematic flow chart of a block chain-based data file consensus method, the present invention provides a block chain-based data file consensus method, including:
a first node in a block chain network packs a data file into a first block and adds the first block to a block chain of the first node, and the first block is broadcasted in the block chain network;
a first node in the block chain network sends a consensus request, encrypts a data file and sends the encrypted data file to a second node;
a second node in the block chain network receives and verifies the first block, acquires a data file in the first block after the verification is passed, and generates a hash chain according to a preset hash algorithm;
a second node in the block chain network receives the encrypted data file, decrypts the data file, and obtains a hash chain of the data file through a preset hash algorithm;
and comparing the decrypted hash chain with the hash chain acquired in the first block, if the hash chain is consistent with the hash chain acquired in the first block, uploading the corresponding data file to a second block, wherein the second block is used for storing the data file to a preset storage position and commonly recognizing the signature.
The method for encrypting the data file and then sending the data file to the second node by the first node specifically comprises the following steps:
the first node encrypts the data file by adopting a symmetric encryption algorithm according to the encryption key to obtain a ciphertext file, encrypts the decryption key and stores the encrypted decryption key in the block chain;
storing the ciphertext file, the signature of the first node on the second block, and the block size of the second block in the second block;
the first node generates an ID parameter of the second block;
the second node requests a decryption key and an ID parameter of the encrypted file from the first node, the first node verifies the identity information of the second node, and after the verification is passed, the decryption key and the ID parameter are sent through a secure channel;
and the second node acquires the storage position information of the second block according to the decryption key and the ID parameter and decrypts the encrypted file.
A second node in the block chain network receives and verifies the first block, and after the verification is passed, the second node acquires a data file in the first block and generates a hash chain according to a preset hash algorithm, and the method specifically comprises the following steps:
when the second node receives the first block;
the first node acquires identity coding information of the second node;
if the identity code information of the second node is consistent with the identity code information prestored in the first node, the verification is passed, and the second node acquires a first block;
and if the identity code information of the second node is inconsistent with the identity code information prestored in the first node, the verification is not passed, and the second node acquires the first block again.
The block chain network also comprises a plurality of consensus nodes, and the second node transmits the second block to other consensus nodes in a broadcast mode after consensus signature.
The block chain-based data file consensus method in the present invention is described below with reference to specific examples:
step 1, a block chain network comprises a plurality of common nodes, and a first node is a main node;
1.1 a first node packs a data file into a first block and adds the first block into a block chain of the first node, and broadcasts the first block in the block chain network;
step 2, a first node in the block chain network sends a consensus request;
2.1 the first node encrypts the data file and sends the encrypted data file to the second node;
2.2 the first node encrypts the data file by a symmetric encryption algorithm according to the encryption key to obtain a ciphertext file, encrypts the decryption key and stores the encrypted decryption key in a block chain;
2.3 storing the ciphertext file, the signature of the first node on the second block and the block size of the second block in the second block;
2.4 the first node generates an ID parameter of the second block;
2.5 the second node requests the decryption key and the ID parameter of the encrypted file from the first node, the first node verifies the identity information of the second node, and after the verification is passed, the decryption key and the ID parameter are sent through a secure channel;
2.6 the second node obtains the second block storage location information according to the decryption key and the ID parameter, and decrypts the encrypted file;
step 3, a second node in the block chain network receives and verifies the first block;
3.1 when the second node receives the first block, the first node acquires the identity coding information of the second node;
3.2 if the identity code information of the second node is consistent with the identity code information prestored in the first node, the verification is passed, and the second node acquires the data file in the first block and generates a hash chain according to a preset hash algorithm;
3.3 if the identity code information of the second node is inconsistent with the identity code information prestored in the first node, the verification fails, and the second node acquires the first block again.
Step 4, a second node in the block chain network receives the encrypted data file, decrypts the data file according to step 2.6, and then obtains a hash chain of the data file through a preset hash algorithm;
and 5, comparing the decrypted hash chain with the hash chain acquired in the first block, if the hash chain acquired in the first block is consistent with the hash chain acquired in the first block, uploading the corresponding data file to a second block, wherein the second block is used for storing the data file to a preset storage position and commonly recognizing the signature.
Example two
Referring to fig. 2, fig. 2 is a schematic composition diagram of a block chain-based data file consensus system, according to a second embodiment of the present invention, a block chain-based data file consensus system is provided, where the system includes: the device comprises a first processing module, a second processing module, a third processing module, a fourth processing module and a comparison module;
the first processing module is used for a first node in a block chain network to pack a data file into a first block and add the first block into a block chain of the first node, and the first block is broadcasted in the block chain network;
the second processing module is used for sending a consensus request by a first node in the block chain network, and the first node encrypts a data file and sends the encrypted data file to a second node;
the third processing module is used for receiving and verifying the first block by a second node in the block chain network, acquiring a data file in the first block after the first block is verified, and generating a hash chain according to a preset hash algorithm;
the fourth processing module is used for receiving the encrypted data file by the second node in the block chain network, and acquiring a hash chain of the data file through a preset hash algorithm after decryption;
and the comparison module is used for comparing the hash chain acquired after decryption with the hash chain acquired in the first block, if the hash chain is consistent with the hash chain acquired in the first block, uploading the corresponding data file to a second block, and the second block is used for storing the data file to a preset storage position and commonly recognizing the signature.
The system also comprises an encryption module and a decryption module, wherein the encryption module is used for encrypting the data file; the decryption module is used for decrypting the data file.
EXAMPLE III
The third embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the block chain-based data file consensus method when executing the computer program.
The processor may be a central processing unit, or may be other general-purpose processor, a digital signal processor, an application specific integrated circuit, an off-the-shelf programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory can be used for storing the computer program and/or the module, and the processor can realize various functions of the block chain-based data file consensus device in the invention by operating or executing the data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card, a secure digital card, a flash memory card, at least one magnetic disk storage device, a flash memory device, or other volatile solid state storage device.
Example four
The fourth embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the steps of the data file consensus method based on a block chain are implemented.
Computer storage media for embodiments of the present invention may take the form of any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM) or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. The block chain-based data file consensus method is characterized by comprising the following steps of:
a first node in a block chain network packs a data file into a first block and adds the first block to a block chain of the first node, and the first block is broadcasted in the block chain network;
a first node in the block chain network sends a consensus request, encrypts a data file and sends the encrypted data file to a second node;
a second node in the block chain network receives and verifies the first block, acquires a data file in the first block after the verification is passed, and generates a hash chain according to a preset hash algorithm;
a second node in the block chain network receives the encrypted data file, decrypts the data file, and obtains a hash chain of the data file through a preset hash algorithm;
comparing the decrypted hash chain with the hash chain acquired in the first block, if the hash chain is consistent with the hash chain acquired in the first block, uploading the corresponding data file to a second block, wherein the second block is used for storing the data file to a preset storage position and commonly recognizing the signature;
the method for encrypting the data file and then sending the data file to the second node by the first node specifically includes:
the first node encrypts the data file by adopting a symmetric encryption algorithm according to the encryption key to obtain a ciphertext file, encrypts the encryption key and stores the encrypted ciphertext file in the block chain;
storing the ciphertext file, the signature of the first node on the second block, and the block size of the second block in the second block;
the first node generates an ID parameter of the second block;
the second node requests a decryption key and an ID parameter of the encrypted file from the first node, the first node verifies the identity information of the second node, and after the verification is passed, the decryption key and the ID parameter are sent through a secure channel;
the second node acquires the storage position information of the second block according to the decryption key and the ID parameter and decrypts the encrypted file;
the block chain network also comprises a plurality of consensus nodes, and after the second node agrees with the signature, the second block is sent to other consensus nodes in a broadcast mode.
2. The method according to claim 1, wherein a second node in the blockchain network receives and verifies the first block, and after the verification is passed, acquires the data file in the first block and generates the hash chain according to a preset hash algorithm, and specifically comprises:
when the second node receives the first block, the first node acquires identity coding information of the second node;
if the identity code information of the second node is consistent with the identity code information prestored in the first node, the verification is passed, and the second node acquires a first block;
and if the identity code information of the second node is inconsistent with the identity code information prestored in the first node, the verification is not passed, and the second node acquires the first block again.
3. The block chain-based data file consensus system is characterized by comprising a first processing module, a second processing module, a third processing module, a fourth processing module and a comparison module;
the first processing module is used for a first node in a block chain network to pack a data file into a first block and add the first block into a block chain of the first node, and the first block is broadcasted in the block chain network;
the second processing module is used for sending a consensus request by a first node in the block chain network, and the first node encrypts a data file and sends the encrypted data file to a second node; the first node encrypts the data file by adopting a symmetric encryption algorithm according to the encryption key to obtain a ciphertext file, encrypts the encryption key and stores the encrypted ciphertext file in the block chain; storing the ciphertext file, the signature of the first node on the second block, and the block size of the second block in the second block; the first node generates an ID parameter of the second block; the second node requests the decryption key and the ID parameter of the encrypted file from the first node, the first node verifies the identity information of the second node, and after the verification is passed, the decryption key and the ID parameter are sent through a secure channel; the second node acquires the storage position information of the second block according to the decryption key and the ID parameter and decrypts the encrypted file;
the third processing module is used for receiving and verifying the first block by a second node in the block chain network, acquiring a data file in the first block after the first block is verified, and generating a hash chain according to a preset hash algorithm;
the fourth processing module is used for receiving the encrypted data file by the second node in the block chain network, decrypting the encrypted data file and acquiring a hash chain of the data file through a preset hash algorithm;
the comparison module is used for comparing the hash chain acquired after decryption with the hash chain acquired in the first block, if the hash chain is consistent with the hash chain acquired in the first block, uploading the corresponding data file to a second block, and the second block is used for storing the data file to a preset storage position and commonly recognizing the signature;
the block chain network also comprises a plurality of consensus nodes, and after the second node agrees with the signature, the second block is sent to other consensus nodes in a broadcast mode.
4. The blockchain-based data file consensus system as claimed in claim 3, further comprising an encryption module for encrypting the data file.
5. The block chain based data file consensus system of claim 3, further comprising a decryption module for decrypting a data file.
6. An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the block chain based data file consensus method according to any one of claims 1-2 when executing the computer program.
7. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, carries out the steps of the block chain based data file consensus method according to one of the claims 1-2.
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| US20170134162A1 (en) * | 2015-11-10 | 2017-05-11 | Shannon Code | System and process for verifying digital media content authenticity |
| CN110807209B (en) * | 2019-11-01 | 2021-04-30 | 腾讯科技（深圳）有限公司 | Data processing method, device and storage medium |
| CN111464518B (en) * | 2020-03-25 | 2022-08-05 | 北京新创智链科技有限公司 | Method and device for sending and verifying cross-link communication data |
| CN111382463B (en) * | 2020-04-02 | 2022-11-29 | 中国工商银行股份有限公司 | Block chain system and method based on stream data |
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| CN108549825A (en) * | 2018-03-14 | 2018-09-18 | 中链科技有限公司 | A kind of file deposits card, verification and the means of proof and device |
| CN110245956A (en) * | 2019-05-15 | 2019-09-17 | 众安信息技术服务有限公司 | A kind of block chain transaction confirmation method and system based on asynchronous multichain |
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