CN114266633A - Gas station tax-related supervision system based on block chain and Internet of things technology - Google Patents
Gas station tax-related supervision system based on block chain and Internet of things technology Download PDFInfo
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Abstract
The invention belongs to the technical field of block chains, and particularly relates to a gas station tax-related supervision system based on the block chains and the technology of the Internet of things, which comprises a data information acquisition terminal, an Internet of things gateway, a plurality of management terminals and a block chain system; the data information acquisition terminal is arranged at a gas station, is used for acquiring data of the gas station in real time, and is connected with the block chain network through the Internet of things gateway; the plurality of management terminals comprise a gas station management terminal and a tax management terminal; the block chain system is used for setting the management terminal as a consensus node, setting the Internet of things gateway as a block chain light node and establishing a block chain network; the internet of things gateway is used for calling a block chain data storage intelligent contract interface to transmit data acquired by the data information acquisition terminal to the distributed block chain network for storage in real time. The gas station data and the tax data are stored in the distributed block chain based on the block chain and the Internet of things, so that the business requirements and the supervision requirements of all parties can be realized.
Description
Technical Field
The invention belongs to the technical field of block chains, and particularly relates to a gas station tax-related supervision system based on the block chains and the technology of the Internet of things.
Background
The data information of each link of the gas station is the important basis for legal tax payment from the gas station to the tax administration department, so that it is necessary to provide effective monitoring means for each link of the gas station. However, the monitoring degree of the existing gas station is low, the supervision effect is poor, and the problems that tax payment data cannot be supervised and the tax authority is difficult to manage are easily caused. Moreover, the number distribution area of the gas stations is wide, so that the actual inventory and the account table are difficult to check during tax administration, and the workload of post investigation is large.
The Internet of things collection equipment acquires data by using the modern Internet of things technology, can make up the defects of single traditional data collection method, data loss, low quantity and less available data dimension and the like, and has important practical significance for realizing high efficiency, accuracy and convenience of data collection and statistics work. However, the following problems also exist: the wireless sensor network of the internet of things equipment is usually deployed in public or other untrusted or even hostile environments, which easily causes data security problems; in terms of inter-network collaboration, when the internet of things involves collaboration across multiple principals, the cost of establishing credit is high; in the aspect of safety and privacy protection, the centralized management architecture of the Internet of things cannot be self-certified, and meanwhile, in the process of collecting data to a centralized system, the problem of privacy disclosure easily occurs.
The block chain is an accounting technology which is commonly maintained by multiple parties, adopts cryptography to ensure transmission and access safety, can realize data consistent storage, is difficult to tamper and prevents repudiation, and is also called a distributed accounting book technology. If the characteristics of the block chain technology can be utilized to supervise the tax involvement of the gas station, the business requirements and supervision requirements of all parties can be met, and the tax involvement supervision efficiency and tax safety of the tax part are greatly improved.
The problems of unified management and safe storage of data acquisition of the Internet of things equipment, mutual trust and cooperation among the Internet of things equipment and the like are solved, and meanwhile, the condition that the data is changed by other means from the outside is reduced through real-time transmission of the Internet of things data. A gas station tax-related supervision system is constructed by utilizing a block chain and the Internet of things technology, gas station data and tax data are stored in a distributed block chain, a permanently unchangeable block chain gas station tax-related data network based on timestamp records is maintained, and a tax bureau, a business hall and a market supervision and management bureau are used as consensus nodes.
Disclosure of Invention
The invention overcomes the defects of the prior art, and solves the technical problems that: the gas station tax-related supervision system based on the block chain and the Internet of things technology is provided to realize tax supervision of the gas station.
In order to solve the technical problems, the invention adopts the technical scheme that: a gas station tax-related supervision system based on a block chain and an Internet of things technology comprises a data information acquisition terminal, an Internet of things gateway, a plurality of management terminals and a block chain system; the data information acquisition terminal is arranged at a gas station, is used for acquiring data of the gas station in real time, and is connected with the block chain network through an Internet of things gateway; the management terminals comprise a gas station management terminal and a tax management terminal; the block chain system is used for setting the management terminal as a consensus node, setting the Internet of things gateway as a block chain light node and establishing a block chain network; the internet of things gateway is used for calling a block chain data storage intelligent contract interface to transmit data acquired by the data information acquisition terminal to the distributed block chain network for storage in real time.
The data information acquisition terminal includes:
a liquid level meter: the oil tank real-time oil quantity measuring device is used for measuring the real-time oil quantity of an oil tank;
an oil output collector: the system is used for collecting oil outlet information of the oil gun;
a communication module: the gateway is used for connecting the Internet of things gateway;
a data storage module: the data acquisition device is used for storing the acquired data;
a processor: the data processing module is used for packaging, storing and sending the data to the Internet of things gateway in real time through the communication module;
the data comprises basic information, time, oil drum oil quantity information and oil outlet information of an oil gun of the oil filling station.
The blockchain system comprises:
a private key encryption module: the public key generation device is used for generating a corresponding public key from the private key set by each consensus node through an encryption algorithm;
the authority intelligent contract module: the system comprises a plurality of consensus nodes and a plurality of nodes, wherein the consensus nodes are used for allocating corresponding authorities according to the service requirements of the consensus nodes;
a service intelligent contract module: the system is used for establishing various intelligent business contracts according to the business requirements of the consensus nodes;
a block consensus process module: the method is used for designating any data center of a data storage layer as a master node through a consensus algorithm, enabling the rest data centers to become slave nodes, and sending the block and all corresponding digital signatures to the slave nodes on a block chain after three stages of request, proposal and quick confirmation.
The private key encryption module generates corresponding public keys through a national secret algorithm SM2 elliptic curve encryption algorithm and stores the public keys on a block chain platform;
the specific flow of the SM2 elliptic curve encryption algorithm is as follows:
using elliptic curve y2 = x3X, all points thereonPAs a base point, pass throughPTangent to the point, intersects the curve at point 2P', at 2P’Points are set as vertical lines, and intersect with the curve at 2PPoint, 2PThe points areP2 times the point;
Pdot and 2PMake straight lines between points, intersect with 3P’Point, at 3P’Points are set as vertical lines, and cross with 3PPoint, 3PThe points areP3 times the point;
repeating the above operation to obtainPOf dotsiMultiple points of whichi>=2；
And taking the input of the consensus node as a private key d, and calculating a point P and a point d times by using the elliptic curve algorithm to serve as a public key.
The blockchain system further comprises:
the tax calculating module: the tax payment data report is generated according to the tax information calculation rule and the collected data of the gas station;
the encryption module is also used for carrying out Hash calculation on the tax payment data report generated by the tax calculation module to generate Hash value data, and carrying out signature encryption on the generated Hash value data by using a private key of the tax management terminal to store and prove the Hash value data in the block chain network.
The gas station management terminal is provided with:
a data downloading module: the system is used for checking and downloading the data collected by the gas station, the tax payment data and the report data;
the data uploading module: the system is used for uploading the feedback information and the tax payment state to a block chain network to complete a tax payment process;
the complaint information uploading module: the intelligent contract is used for calling the intelligent contract for block chain dissatisfaction to complain;
the blockchain system further comprises:
the complaint forwarding module: the tax management terminal is used for forwarding the complaint information sent by the gas station management terminal to the tax management terminal;
the tax management terminal is provided with:
a complaint processing module: the intelligent contract verification method is used for calling the block chain data verification intelligent contract according to the complaint information, calculating the hash value of the gas station tax-related data file needing to be verified, comparing whether the hash value extracted from the block chain account book is consistent or not, and determining the processing result according to the comparison information.
When the hash values are consistent, the complaint processing module is also used for generating original data of the tax information file in a correlation mode according to the file hash value, so that the original data are traced and checked, and complaints are fed back according to check results;
and the gas station management terminal is also used for obtaining the complaint feedback and updating the tax payment state in time.
In the block chain system, the hash value calculation is realized by adopting a domestic hash algorithm SM 3.
The management terminal also comprises a market management supervision office terminal and a business hall management terminal;
the market management and supervision bureau terminal and the business hall management terminal are used for monitoring the whole process of tax payment data collection, tax information calculation, tax payment collection, dissimilarity complaint and feedback, and optimizing tax payment decision according to the monitoring result.
The invention provides a gas station tax-related supervision system based on a block chain and an Internet of things technology, which has the following beneficial effects compared with the prior art:
1. the invention ensures the unforgeability of the data of the Internet of things and the data traceability by utilizing the characteristics of the block chain, and simultaneously solves the mutual trust and cooperation problem among multiple participants in the tax-related supervision process of the gas station. The traditional gas station tax payment supervision process has the problems of complicated supervision range dispersion, asymmetric information of both the collecting party and the receiving party, difficulty in checking and checking actual data and an account table and the like, and the tax administration capacity and efficiency of a tax authority are seriously influenced. The invention stores tax-related data and tax collection information of a plurality of gas stations in a block chain network by introducing a block chain technology, the network records the tax-related supervision process of the gas stations by adopting a timestamp recording mode, and is maintained by a plurality of participants participating in the tax supervision of the gas stations, a tax bureau, a business hall and a market supervision and management bureau together, thereby avoiding centralized risk, avoiding the problem of data tampering, and realizing the credible storage and traceable management of the gas station data and the tax data.
2. The invention solves the problem of real-time and reliable collection of the tax-related data of the gas station. At present, a gas station generally adopts a manual registration mode or a mode of acquiring by a tax control device to register data, but the use and management of an oiling machine are disordered, the behaviors of taking inaccurate tax control machines, privately adjusting and changing real oiling machine mainboard data and the like generally exist, and the real source data of the gas station cannot be acquired. The invention comprehensively utilizes the processor, the acquisition module, the encryption module, the storage module and the wireless transmission module of the Internet of things equipment terminal to realize the real-time acquisition, real-time transmission and confidential storage of the tax-related data of the refueling machine, the oil tank and other gas stations. The method has the advantages that real-time supervision and source management and control are carried out on tax-related data of the gas station, real-time data entering, selling and storing are provided for tax authorities, and effective supervision is achieved on actions of hidden sales income of the gas station, tax stealing and leaking, illegal modification of data of the fuel dispenser and the like.
3. The invention solves the problems of high supervision difficulty, difficult dissimilarity complaint and the like in the gas station tax-related supervision process. The traditional gas station is large in taxation and tax payment range and wide in gas station quantity distribution area, actual data and an account table are difficult to check, and if the gas station disagrees with tax payment information, the investigation workload is large afterwards. According to the invention, through a block chain technology and an Internet of things technology, a server and a participant server connected with an Internet of things gateway are used as block chain nodes, gas station data and tax data are stored on a distributed block chain, and monitoring record and visual display of the whole process of a supervision flow are realized. The tax bureau, the business hall and the market supervision and management bureau realize the real-time monitoring of the tax payment process of the gas station and greatly improve the supervision efficiency. Meanwhile, the gas station can check the tax payment data and the tax information through the service terminal, and can realize complaint when dissatisfaction exists.
Drawings
Fig. 1 is a schematic structural diagram of a gas station tax-related supervision system based on a block chain and an internet of things technology according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a data information acquisition terminal in an embodiment of the present invention;
FIG. 3 is a block chain system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of the cryptographic algorithm SM2 used in the embodiment of the present invention;
fig. 5 is a block diagram of a gasoline station management terminal according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; 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.
As shown in fig. 1, an embodiment of the present invention provides a gas station tax-related supervision system based on a block chain and an internet of things technology, including a data information acquisition terminal, an internet of things gateway, a plurality of management terminals, and a block chain system. The data information acquisition terminal is arranged at a gas station, is used for acquiring data of the gas station in real time, and is connected with the block chain network through an Internet of things gateway; the management terminals comprise a gas station management terminal and a tax management terminal; the block chain system is used for setting the management terminal as a consensus node, setting the Internet of things gateway as a block chain light node and establishing a block chain network; the internet of things gateway is used for calling a block chain data storage intelligent contract interface to transmit data acquired by the data information acquisition terminal to the distributed block chain network for storage in real time.
Further, as shown in fig. 2, in this embodiment, the data information acquiring terminal includes:
a liquid level meter: the oil tank real-time oil quantity measuring device is used for measuring the real-time oil quantity of an oil tank;
an oil output collector: the system is used for collecting oil outlet information of the oil gun;
a communication module: the gateway is used for connecting the Internet of things gateway;
a data storage module: the data acquisition device is used for storing the acquired data;
a processor: the data processing module is used for packaging, storing and sending the data to the Internet of things gateway in real time through the communication module;
the data comprises basic information, time, oil drum oil quantity information and oil outlet information of an oil gun of the oil filling station.
In particular, the communication module may be a wireless communication module.
Further, as shown in fig. 3, the blockchain system includes:
a private key encryption module: the public key generation device is used for generating a corresponding public key by the private key set by each consensus node through an encryption algorithm;
the authority intelligent contract module: the system comprises a plurality of consensus nodes and a plurality of nodes, wherein the consensus nodes are used for allocating corresponding authorities according to the service requirements of the consensus nodes;
a service intelligent contract module: the system is used for establishing various intelligent business contracts according to the business requirements of the consensus nodes;
a block consensus process module: the method is used for designating any data center of a data storage layer as a master node through a consensus algorithm, enabling the rest data centers to become slave nodes, and sending the block and all corresponding digital signatures to the slave nodes on a block chain after three stages of request, proposal and quick confirmation.
Specifically, in this embodiment, the private key encryption module generates a corresponding public key for each private key through a cryptographic algorithm SM2 elliptic curve encryption algorithm, and stores the public key in the block chain platform;
the specific flow of the SM2 elliptic curve encryption algorithm is as follows:
s1, as shown in FIG. 4, an elliptic curve y is adopted2 = x3X, all points thereonPAs a base point, pass throughPTangent to the point, intersects the curve at point 2P', at 2P’Points are set as vertical lines, and intersect with the curve at 2PPoint, 2PThe points areP2 times the point;
S2、Pdot and 2PMake straight lines between points, intersect with 3P’Point, at 3P’Points are set as vertical lines, and cross with 3PPoint, 3PThe points areP3 times the point;
s3, repeating the above operation to obtainPOf dotsiMultiple points of whichi>=2；
And S4, taking the input of the consensus node as a private key d, and calculating a point P and a point d times the point by using the elliptic curve algorithm to serve as a public key.
Further, in this embodiment, the block chain system further includes: the tax calculation module is used for generating a tax payment data report according to tax information calculation rules and the acquired data of the gas station; the encryption module is also used for carrying out Hash calculation on the tax payment data report generated by the tax calculation module to generate Hash value data, and carrying out signature encryption on the generated Hash value data by using a private key of the tax management terminal to store and prove the Hash value data in the block chain network.
Further, as shown in fig. 5, in the present embodiment, the gas station management terminal is provided with:
a data downloading module: the system is used for checking and downloading the data collected by the gas station, the tax payment data and the report data;
the data uploading module: the system is used for uploading the feedback information and the tax payment state to a block chain network to complete a tax payment process;
the complaint information uploading module: the intelligent contract is used for calling the intelligent contract for block chain dissatisfaction to complain.
Specifically, as shown in fig. 3, the blockchain system further includes:
the complaint forwarding module: the tax management terminal is used for forwarding the complaint information sent by the gas station management terminal to the tax management terminal;
specifically, in this embodiment, the tax management terminal is provided with a complaint processing module, and the complaint processing module is configured to invoke a block chain data verification intelligent contract according to complaint information, perform hash value calculation on a gas station tax-related data file to be verified, compare whether hash values extracted from a block chain account book are consistent, and determine a processing result according to comparison information. When the hash values are consistent, the complaint processing module is also used for generating original data of the tax information file in a correlation mode according to the file hash value, so that the original data are traced and checked, and complaints are fed back according to check results;
further, in this embodiment, the gas station management terminal is further configured to obtain the feedback of the complaint from the station and update the tax payment state in time.
Specifically, in the blockchain system, the hash value calculation is realized by using a domestic hash algorithm SM 3.
Further, as shown in fig. 1, the management terminal further includes a market management supervision office terminal and a business hall management terminal; the market management and supervision bureau terminal and the business hall management terminal are used for monitoring the whole process of tax payment data collection, tax information calculation, tax payment collection, dissimilarity complaint and feedback, and optimizing tax payment decision according to the monitoring result.
The invention provides a gas station tax-related supervision system based on a block chain and an internet of things technology, which relates to the aspects of internet of things data acquisition, data transmission, block chain network supervision and the like, wherein participator areas are dispersed in space and various in types, and specifically comprises a plurality of gas stations in a certain area, a tax bureau, a market supervision and management bureau and a business hall.
1. The data information acquisition terminal comprises a liquid level meter for measuring the real-time oil quantity of an oil drum and acquisition equipment for oil outlet information of an oil gun, and is installed at a gas station and transmitted to the Internet of things gateway in real time through the data information acquisition terminal by utilizing an equipment processor, a data acquisition module, a data storage module, a wireless communication module and the like. And a plurality of gas station gateway nodes and server nodes can be simultaneously added into a block chain network established by the block chain system, so that the unified and centralized management of tax information is realized. The block chain system is mounted on a block chain server.
2. Determining the types and the numbers of the participants, establishing a block chain network, taking management terminals such as gas stations, tax authorities, business halls and market supervision authorities as consensus nodes to jointly maintain the block chain network, and taking an internet of things gateway of each gas station as a block chain light node to be incorporated into the block chain network for sending or transmitting transaction messages. Each consensus party can use the block chain system to perform registration application, after obtaining registration permission, each management terminal firstly sets a personal private key of each management terminal, then adopts a high-efficiency and safe cryptographic algorithm SM2, namely an elliptic curve encryption algorithm, the elliptic curve encryption algorithm generates a corresponding public key by the private key, and obtains a special account used by the transaction system to distribute a corresponding CA certificate, and the public key of each user is stored on the block chain platform. And a high-efficiency and safe cryptographic algorithm SM2 is adopted to encrypt a private key, so that the safety of reverse calculation is ensured.
3. And establishing an intelligent contract of the authority. And realizing the distribution function of the related authority of each participant of the block chain according to the business requirement of the participant by using an intelligent authority contract. The gas station can inquire and update tax payment data, tax information and tax payment states of the gas station, but does not have access rights of other gas station data, so that data privacy safety is guaranteed. The tax bureau can access the data of each gas station, can realize the calculation and the release of tax information, and can realize the tracing and the check of related data when receiving the dissatisation complaint of the gas station, thereby ensuring the openness and the fairness of the tax flow. The market supervision and management bureau and the business hall can acquire corresponding data according to self business requirements and help self decision, thereby better standardizing the order of sales and tax in the finished oil industry.
4. And establishing various intelligent business contracts. And establishing business intelligent contracts such as data storage, data query, tax information calculation, tax information release, tax information verification, dissimilarity complaints, feedback and the like, and realizing the processing and query of the gas station tax-related supervision data.
5. And each gas station gateway calls a block chain data storage intelligent contract interface respectively to transmit the gas station collected data to the distributed block chain network in real time, and realizes safe storage. The processor transmits data in real time through the communication module in the process, so that the fuel quantity change data of the gas station can be collected, uploaded and stored in real time, and the condition that the data is changed by other means from the outside is reduced. The system data transmission and processing process comprises the steps of carrying out Hash calculation on the data collected by each gas station to generate a section of characteristic data Hash value of original data with fixed length; meanwhile, signature encryption is carried out on the generated hash value data by using a private key of a consensus party such as a gas station, a tax bureau and the like by adopting an asymmetric encryption algorithm; the block consensus process adopts an EPBFT consensus algorithm, a data storage layer can designate any data center as a master node, the rest data centers become slave nodes, and the block and all corresponding digital signatures are sent to the slave nodes on a block chain after three stages of request, proposal and quick confirmation. Thereafter, the data blocks are written into the blockchain network in the order of the intra-block timestamps, and are further stored in each data center of the system storage platform in a decentralized manner.
6. Tax collection modes and relevant rules are input into the block chain system under the common identification of a tax bureau, a business hall and a market supervision and management bureau and are used as the basis for calculating tax information of a gas station tax collection and supervision system, and after tax payment data report information is generated, the system performs hash calculation on a data file by adopting an asymmetric encryption algorithm to generate a characteristic data hash value of original data with a fixed length; and the generated hash value data is signed and encrypted by using a private key of a tax bureau party and stored in a block chain network in which multiple parties participate.
7. The gas station terminal can check and verify the collected data, the tax payment data and the report data of the gas station, can timely make tax payment feedback, and can upload the feedback information and the tax payment state to the block chain network to complete the tax payment process. If one side of the gas station disagrees the tax information, the gas station terminal can call a block chain disagreement complaint intelligent contract to complain to the tax bureau, and the block chain system feeds back the complaint information to the tax bureau terminal.
8. The block chain system provides the verification function of tax payment data and tax information. When the tax management terminal processes the gas station complaint information, the relevant tax information file of the complaint is taken as input, a block chain data verification intelligent contract is called, hash operation is carried out on the gas station tax related data file to be verified, and then whether the hash values extracted from the block chain account book are consistent or not is compared, if so, the data file is proved to be not tampered after self-storage verification. The flow of hash value calculation using the SM3 algorithm is as follows:
set the information asm(ii) a For informationmIs filled to obtainm’；
Information after fillingm’Grouping is performed by 512 bits:m’=B 0 B 1 B n-1 and the process is iterated on the basis of the number of the data,V i+1 =CF(V i , B i )whereinV i Is 256 bits to be used as an initial value,CFis a compression function, which is composed of an information expansion process and a state updating process, and is finally countedCalculated to obtainV n+1 I.e. the hash value sought.
Meanwhile, according to the hash of the input file, the hash can be associated with the original data for generating the tax information file, so that the original data can be traced and checked, and the complaint can be fed back according to the verification result. And the gas station acquires the complaint feedback to perform corresponding processing and updates the tax payment state in time.
9. The market supervision and management bureau and the business hall carry out the whole process monitoring of tax payment data collection, tax information calculation, tax collection, dissimilarity complaint and feedback of the whole process through the market supervision and management bureau terminal and the business hall management terminal, and can know the tax payment data and the tax payment state of each gas station in time. The market management supervision bureau and the business hall can make corresponding industry tax decision according to the acquired information.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A gas station tax-related supervision system based on a block chain and the technology of the Internet of things is characterized by comprising a data information acquisition terminal, an Internet of things gateway, a plurality of management terminals and a block chain system;
the data information acquisition terminal is arranged at a gas station, is used for acquiring data of the gas station in real time, and is connected with the block chain network through an Internet of things gateway;
the management terminals comprise a gas station management terminal and a tax management terminal;
the block chain system is used for setting the management terminal as a consensus node, setting the Internet of things gateway as a block chain light node and establishing a block chain network;
the internet of things gateway is used for calling a block chain data storage intelligent contract interface to transmit data acquired by the data information acquisition terminal to the distributed block chain network for storage in real time.
2. The gas station tax-related supervision system based on the blockchain and internet of things technology as claimed in claim 1, wherein the data information acquiring terminal comprises:
a liquid level meter: the oil tank real-time oil quantity measuring device is used for measuring the real-time oil quantity of an oil tank;
an oil output collector: the system is used for collecting oil outlet information of the oil gun;
a communication module: the gateway is used for connecting the Internet of things gateway;
a data storage module: the data acquisition device is used for storing the acquired data;
a processor: the data processing module is used for packaging, storing and sending the data to the Internet of things gateway in real time through the communication module;
the data comprises basic information, time, oil drum oil quantity information and oil outlet information of an oil gun of the oil filling station.
3. The gas station tax-related supervision system according to claim 1, wherein the blockchain system comprises:
a private key encryption module: the public key generation device is used for generating a corresponding public key from the private key set by each consensus node through an encryption algorithm;
the authority intelligent contract module: the system comprises a plurality of consensus nodes and a plurality of nodes, wherein the consensus nodes are used for allocating corresponding authorities according to the service requirements of the consensus nodes;
a service intelligent contract module: the system is used for establishing various intelligent business contracts according to the business requirements of the consensus nodes;
a block consensus process module: the method is used for designating any data center of a data storage layer as a master node through a consensus algorithm, enabling the rest data centers to become slave nodes, and sending the block and all corresponding digital signatures to the slave nodes on a block chain after three stages of request, proposal and quick confirmation.
4. The gas station tax-related supervision system based on the blockchain and internet of things technology as claimed in claim 3, wherein the private key encryption module generates corresponding public key for each private key through a state cryptographic algorithm SM2 elliptic curve encryption algorithm, and stores the public key on the blockchain platform;
the specific flow of the SM2 elliptic curve encryption algorithm is as follows:
using elliptic curve y2 = x3X, all points thereonPAs a base point, pass throughPTangent to the point, intersects the curve at point 2P', at 2P’Points are set as vertical lines, and intersect with the curve at 2PPoint, 2PThe points areP2 times the point;
Pdot and 2PMake straight lines between points, intersect with 3P’Point, at 3P’Points are set as vertical lines, and cross with 3PPoint, 3PThe points areP3 times the point;
repeating the above operation to obtainPOf dotsiMultiple points of whichi>=2；
And taking the input of the consensus node as a private key d, and calculating a point P and a point d times by using the elliptic curve algorithm to serve as a public key.
5. The gas station tax-related supervision system according to claim 1, wherein the blockchain system further comprises:
the tax calculating module: the tax payment data report is generated according to the tax information calculation rule and the collected data of the gas station;
the encryption module is also used for carrying out Hash calculation on the tax payment data report generated by the tax calculation module to generate Hash value data, and carrying out signature encryption on the generated Hash value data by using a private key of the tax management terminal to store and prove the Hash value data in the block chain network.
6. The gas station tax-related supervision system based on the blockchain and the internet of things technology according to claim 1, wherein the gas station management terminal is provided with:
a data downloading module: the system is used for checking and downloading the data collected by the gas station, the tax payment data and the report data;
the data uploading module: the system is used for uploading the feedback information and the tax payment state to a block chain network to complete a tax payment process;
the complaint information uploading module: the intelligent contract is used for calling the intelligent contract for block chain dissatisfaction to complain;
the blockchain system further comprises:
the complaint forwarding module: the tax management terminal is used for forwarding the complaint information sent by the gas station management terminal to the tax management terminal;
the tax management terminal is provided with:
a complaint processing module: the intelligent contract verification method is used for calling the block chain data verification intelligent contract according to the complaint information, calculating the hash value of the gas station tax-related data file needing to be verified, comparing whether the hash value extracted from the block chain account book is consistent or not, and determining the processing result according to the comparison information.
7. The gas station tax-related supervision system based on the blockchain and internet of things technology as claimed in claim 6, wherein when the hash values are consistent, the complaint processing module further associates and generates the original data of the tax information file according to the file hash value, thereby realizing the retroactive check of the original data and feeding back complaints according to the check result;
and the gas station management terminal is also used for obtaining the complaint feedback and updating the tax payment state in time.
8. The gas station tax-related supervision system according to claim 1, wherein the hash value calculation in the blockchain system is implemented by using a domestic hash algorithm SM 3.
9. The gas station tax-related supervision system based on the blockchain and internet of things technology as claimed in claim 1, wherein the management terminal further comprises a market management supervision office terminal and a business hall management terminal;
the market management and supervision bureau terminal and the business hall management terminal are used for monitoring the whole process of tax payment data collection, tax information calculation, tax payment collection, dissimilarity complaint and feedback, and optimizing tax payment decision according to the monitoring result.
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| CN115484030B (en) * | 2022-09-01 | 2024-03-29 | 无锡商业职业技术学院 | Enterprise tax data sharing method and system based on Internet of things technology |
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