CN112417486A - Tax control method and system for three-party linkage encryption - Google Patents

Tax control method and system for three-party linkage encryption Download PDF

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CN112417486A
CN112417486A CN202011392679.5A CN202011392679A CN112417486A CN 112417486 A CN112417486 A CN 112417486A CN 202011392679 A CN202011392679 A CN 202011392679A CN 112417486 A CN112417486 A CN 112417486A
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tax
module
taxpayer
point cloud
information
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CN112417486B (en
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姜美
徐敬
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Hunan Dayi Jincheng Technology Group Co.,Ltd.
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Hunan First Normal University
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/606—Protecting data by securing the transmission between two devices or processes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/04—Billing or invoicing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q40/00—Finance; Insurance; Tax strategies; Processing of corporate or income taxes
    • G06Q40/10—Tax strategies
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
    • G07G5/00—Receipt-giving machines
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/2107—File encryption

Abstract

The invention provides a tax control method and system with three-party linkage encryption, which comprises the following steps: tax administration module generates tax model assignment factor set xiAnd transmitting to a tax service module and a point cloud solution calculation module; generate a tax key vsk and transmit it to the point cloud solution computation module; generating a tax public key vpk and transmitting the tax public key vpk to a taxpayer tax administration module; the taxpayer tax administration module encrypts the taxpayer tax information y by using the tax public key vpk to obtain the encrypted taxpayer tax information Ei(ii) a Tax service module assigns value to factor set x by using tax modeliAnd encrypting taxpayer tax information EiObtaining and encrypting tax calculation results, carrying out function encryption and transmitting to the pointA cloud computing module; the point cloud solution calculation module generates a tax model decryption key vdk, decrypts and calculates an encrypted tax payment calculation result, and obtains a point cloud solution ExAnd transmitting the data to a tax controller or a safe storage module for invoicing or tax data storage.

Description

Tax control method and system for three-party linkage encryption
Technical Field
The invention belongs to the technical field of tax control, and particularly relates to a tax control method and system based on three-party linkage encryption.
Background
The network invoice is accompanied by a plurality of problems in the process of large-scale popularization and application across the country.
The network invoice application system not only needs to meet the requirement that thousands of taxpayers open invoices on line, but also needs to inquire the invoices through the system by consumers and tax departments, so that the problem of high concurrency caused by a large number of users needs to be solved; meanwhile, the network invoice depends on the Internet, so that the safety problem is determined by the openness of the Internet and must be considered; and the taxpayer's own business requirement system has a certain degree of customizability.
The tax control system or tax control device in the prior art is only used for carrying out encryption improvement on a tax control IC card in the tax control system applied by a tax service department, and further carrying out data encryption and digital signature algorithm on tax information of a taxpayer received by the tax service department.
For example, in the tax-controlled cash register protected by the chinese patent 201510560750.9, the tax control module is used to perform key loading in advance by the information management system of the distributor or the tax authority, and only when the tax service department performs network tax return to the tax management server, the key is used to encrypt the tax management server, the key is generated by a key generator of a tax authority information management system (a background system for short) according to the machine number of the tax-controlled cash register (each tax-controlled cash register has a unique machine number) and the basic information of a taxpayer and the like, but the process of tax administration and control involves three-party coordination of taxpayers, tax service intermediaries and tax administration control authorities, in the public network channel, tax declares are only carried out on a tax service intermediary or a taxpayer through a system which only carries out encryption through one party, such as a tax control and tax payment machine, so that the tax declares are easy to crack by a network hacker, and the safety in the tax information management and control process is reduced.
Disclosure of Invention
Aiming at the defects, the invention provides a tax control method and a tax control system with three-party linkage encryption, which utilize a tax supervision module, a tax service module, a taxpayer tax management module and a point cloud solution calculation module to carry out linkage encryption and decryption calculation, ensure the privacy and accuracy of data transmission, ensure that tax information is not leaked, and avoid the defects of tax information leakage, tax omission, repetition and the like caused by losing plug-ins such as identity authentication or tax IC cards, U shields and the like.
The invention provides the following technical scheme: a tax control method for three-party linkage encryption comprises the following steps:
s1: the tax supervision module adopts prime number g and prime number h to form a circulation group of security prime number p
Figure BDA0002813254040000021
Taking l to represent the dimension of the vector on which the dot product is to be performed, formed as a set of spatial vectors
Figure BDA0002813254040000022
Form a
Figure BDA0002813254040000023
Tax administration module tax model assignment factor set xiThe tax supervision module collects the tax model assignment factor xiTransmitting the data to a tax service module and a point cloud solution calculation module;
2l represents the circulating group
Figure BDA0002813254040000024
Is determined by the two-dimensional space vector dimension of (a),
Figure BDA0002813254040000025
is denoted by siAnd tiThe tax administration module adopts the siAnd said tiDefining and obtaining a tax key vsk of the tax supervision module, and transmitting the tax key vsk to a point cloud solution calculation module;
the tax supervision module is used for circularly grouping the two-dimensional space
Figure BDA0002813254040000026
Each pair of s iniAnd said tiPerforming mod calculation to obtain
Figure BDA0002813254040000027
Obtaining a tax public key vpk of the tax supervision module, and transmitting the tax public key vpk to a taxpayer tax management module;
s2: the taxpayer tax administration module receives the tax public key vpk and the taxpayer tax information y, encrypts the taxpayer tax information y by using the tax public key vpk obtained in the step S1 to obtain first non-private data C, second non-private data D and encrypted taxpayer tax information EiSaid
Figure BDA0002813254040000031
The encrypted taxpayer tax information EiTransmitting to the tax service module;
s3: the tax service module utilizes the tax model assignment factor set x obtained in the step S1iAnd the encrypted taxpayer tax information E obtained in the step S2iCarrying out tax payment calculation to form tax payment calculation result<xi，Ei>Performing function encryption calculation on the tax payment calculation result to obtain an encrypted tax payment calculation result f<xi，Ei>The result f of the calculation of the encrypted tax payment is obtained<xi，Ei>Transmitting to the point cloud solution calculation module;
s4: the point cloud solution calculation module utilizes the tax key vsk obtained in the step S1 and the tax model assignment factor set xiForm with third non-private data sxAnd fourth non-private data txDefined tax model decryption keys vdk;
s5: the point cloud solution calculation module utilizes the tax key decryption key vdk obtained in the step S4 to calculate the encrypted tax payment calculation result f<xi，Ei>Carrying out decryption calculation to obtain a point cloud solution Ex：
Figure BDA0002813254040000032
S6: the step of S5The resulting point cloud solution ExAnd transmitting the data to a tax controller or a safe storage module for invoicing or tax data storage.
Further, the step of S2 includes the steps of:
s21: the taxpayer tax administration module adopts the two-dimensional space circulation group
Figure BDA0002813254040000033
The prime number g in the first non-private data is subjected to modulo operation to obtain first non-private data C ═ gr mod p；
S22: the taxpayer tax administration module adopts the two-dimensional space circulation group
Figure BDA0002813254040000034
Performing modulo operation on the prime number h in the first group to obtain second non-private data D ═ hr mod p；
S23: the taxpayer tax administration module adopts the first non-private data C obtained in the step S21 and the second non-private data D obtained in the step S22 to encrypt and calculate the taxpayer tax information y to obtain encrypted taxpayer tax information
Figure BDA0002813254040000041
The encrypted taxpayer tax information EiAnd transmitting the point cloud solution to the point cloud solution calculation module.
Further, the step of S4 includes the steps of:
s41: the point cloud solution computation module utilizes the s in the tax Key vskiAnd said xiCalculating to obtain third non-private data sx：
Figure BDA0002813254040000042
S42: the point cloud solution computation module utilizes the t in the tax key vskiAnd said xiFourth non-private data t is obtained through calculationx：
Figure BDA0002813254040000043
S43: the point cloud solution calculation module utilizes the third non-private data S obtained in the step S21xAnd the fourth non-private data t obtained in the step of S22xA tax model encryption key vdk is defined.
The invention also provides a three-party linked encrypted tax control system, which comprises a tax control microcontroller, a communication module, a tax control collection module and a safety storage module, wherein the tax control microcontroller comprises a tax supervision module, a tax service module, a taxpayer tax management module and a point cloud solution calculation module;
the tax supervision module is used for generating a tax model assignment factor set x of the tax supervision moduleiA tax key vsk and a tax public key vpk, and assigning the tax model value set xiThe tax service module and the point cloud solution calculation module are transmitted, the tax key vsk is transmitted to the point cloud solution calculation module, and the tax public key vpk is transmitted to the taxpayer tax management module;
the taxpayer tax administration module is used for receiving and encrypting the taxpayer tax information y by using the tax public key vpk to obtain encrypted taxpayer tax information EiThe encrypted taxpayer tax information EiTransmitting to the tax service module;
the tax service module is used for receiving the tax model assignment factor set xiThe encrypted taxpayer tax information EiForming and functionally encrypting tax calculation results<xi，Ei>The result f of the calculation of the encrypted tax payment is obtained<xi，Ei>Transmitting to the point cloud solution calculation module;
the point cloud solution calculation module is used for calculating to obtain a final point cloud solution Ex；
The tax control collection module is used for solving the E according to the point cloudxBilling;
the secure storage module is used for storing the point cloudSolution ExAnd carrying out cloud storage.
Further, the tax administration module comprises: the tax public key generation module, the tax key generation module and the tax model assignment generation module;
the tax public key generating module is used for generating a tax public key vpk and transmitting the tax public key vpk to the taxpayer tax management module;
the tax key generation module is used for generating a tax key vsk and transmitting the tax key vsk to the point cloud solution calculation module;
the tax collection model assignment generation module is used for generating a tax collection model assignment factor set x suitable for the taxpayeriAnd constructing a tax collection model and various assignments thereof, and transmitting the tax collection model and the point cloud solution calculation module.
Further, the taxpayer tax administration module includes: the tax public key receiving module, the taxpayer tax information receiving module and the encryption module;
the tax public key receiving module is used for receiving the tax public key vpk;
the taxpayer tax information receiving module is used for receiving taxpayer tax information y;
the encryption module is used for encrypting the taxpayer tax information y to obtain first non-private data C, second non-private data D and encrypted taxpayer tax information Ei。
Further, the tax service module comprises: the taxation model assignment receiving module, the taxation calculation result generating module and the function encryption module;
the tax collection model assignment receiving module is used for receiving the tax collection model assignment factor set xi；
The tax calculation result generation module is used for calculating the tax calculation result<xi，Ei>；
The function encryption module is used for carrying out function encryption on the tax payment calculation result and encrypting the tax payment calculation result f<xi，Ei>Transmitting to a point cloud solution computation modelAnd (5) blocking.
Further, the point cloud solution calculation module includes: the tax model decryption key generation module, the encryption tax calculation result receiving module and the calculation module;
the tax model decryption key generation module is configured to receive the tax key vsk and generate a tax model decryption key vdk;
the encrypted tax calculation result receiving module is used for receiving the encrypted tax calculation result f<xi，Ei>；
The calculation module is used for decrypting the key vdk and encrypting the tax calculation result f according to the tax model<xi，Ei>Calculating tax point cloud solution Ex。
Furthermore, the safety storage module comprises a tax control information distribution module, a tax control information classification module and a tax control cloud storage module.
Further, the tax control system also comprises an information preprocessing module and a tax control two-dimensional code generating module,
the information preprocessing module is used for comparing whether the tax transaction information is correct or not, eliminating invalid information with noise and transmitting a signal of eliminating the invalid information to the central control module;
the tax-control two-dimensional code generation module is used for solving the finally formed point cloud ExAnd after the two-dimensional code and the watermark are combined for secondary encryption, the two-dimensional code and the watermark are transmitted to the tax control collection module for invoicing.
The invention has the beneficial effects that:
1) the method and the system encrypt the taxpayer tax information y by utilizing the tax public key vpk transmitted by the tax supervision module to obtain the encrypted taxpayer tax information EiThe first non-private data C and the second non-private data D are transmitted to the tax service module in a form of data C and data D, so that the non-public property of tax information of the taxpayer is ensured, and the tax service module utilizes a tax model assignment factor set x to assign the tax informationiThe information adopted by calculation is only the first non-private data C and the second non-private data D, so that the accuracy of the tax service module is ensured, and the accuracy of the tax service module is also ensuredThe tax information y of the taxpayer cannot be leaked.
2) The tax service module of the method and the system calculates the data with the first non-private data C and the second non-private data D to obtain the tax calculation result<xi，Ei>In the process of function encryption, f is formed<xi，Ei>When the taxpayer tax information y is subjected to double encryption, the calculated taxpayer tax information y and the calculated taxes such as various taxes to be paid are encrypted and then transmitted to the point cloud calculation module, so that the privacy of the taxpayer tax information y and the taxes to be paid in the transmission process is further ensured.
3) The method adopts a tax supervision module, a tax service module, a taxpayer tax management module and a point cloud solution calculation module, wherein taxpayer tax information y is encrypted by the taxpayer tax management module to form encrypted tax information, then the encrypted tax information is converted into first non-private data C and second non-private data D and transmitted to the tax service module, meanwhile, the tax information is calculated by the tax service module, then function encryption is carried out again and transmitted to the point cloud solution calculation module, and the point cloud solution calculation module utilizes a tax secret key vsk transmitted by a tax supervision department and an assignment factor set x of the tax modeliForming with third non-private data sxFourth non-private data txThe defined tax model decryption key vdk is used for decrypting the function encryption by using the tax model decryption key vdk to obtain the first non-private data C, the second non-private data D and the third non-private data sxAnd fourth non-private data txExpressed and calculated point cloud solution ExEnsuring the tax model assignment factor set xiAnd the privacy of the tax information y of the taxpayer, and the accuracy and the confidentiality of the data in the processes of three-party linked data reporting, transmission and calculation are ensured.
4) The invoicing process of the taxpayer can be effectively supervised in time. The taxpayer must make an invoice through the tax control system, and the tax authority can obtain the information of the invoice made by the taxpayer in real time and master the production and operation conditions of the taxpayer in the first time. And the taxpayer does not need to go to the tax authority to handle the normal invoice payment procedure, and the invoice is automatically paid after being issued, so that the pressure of a tax hall is relieved to a great extent. Meanwhile, the collected invoice data can be processed, analyzed and utilized, and the informatization application level of the tax department is further improved.
5) The anti-counterfeiting code combining the two-dimensional code and the watermark is added to the finally printed invoice by utilizing the tax-control two-dimensional code generation module, the anti-counterfeiting coefficient of the final invoice can be enhanced, the issuing information of all invoices is stored in a background server of a tax authority and is encrypted by a tax key vsk, and finally the point cloud solution E for issuing the invoice, which reaches the tax-control collection module, is obtained by encrypting and calculating the tax information y of the taxpayerxTherefore, the tax information of the taxpayer cannot be leaked, and only the tax service department and the tax supervision department can encrypt and decrypt the tax information y of the taxpayer to carry out tax control and service such as tax control management, invoicing information management and the like.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
fig. 1 is a flowchart of a tax control method of three-party linked encryption according to embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a three-party linked encryption tax control system according to embodiment 2 of the present invention;
fig. 3 is a schematic structural diagram of a tax control microcontroller of a three-party linked encryption tax control system according to embodiment 2 of the present invention;
fig. 4 is a schematic structural diagram of a three-party linked encryption tax control system according to embodiment 3 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 only a part of the embodiments of the present invention, and not all of the 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.
Example 1
As shown in fig. 1, the tax control method for three-party linked encryption provided by the invention comprises the following steps:
s1: the tax supervision module adopts prime number g and prime number h to form a circulation group of security prime number p
Figure BDA0002813254040000091
Taking l to represent the dimension of the vector on which the dot product is to be performed, formed as a set of spatial vectors
Figure BDA0002813254040000092
Form a
Figure BDA0002813254040000093
Tax administration module tax model assignment factor set xiI is the number of the tax model assignment factors x, i belongs to { 1.. multidot.l }, and the tax supervision module collects the tax model assignment factors xiTransmitting the data to a tax service module and a point cloud solution calculation module;
2l represents the circulating group
Figure BDA0002813254040000094
Is determined by the two-dimensional space vector dimension of (a),
Figure BDA0002813254040000095
is denoted by siAnd tiThe two-dimensional space circulation group is formed by i ∈ { 1., l }, and the tax supervision module adopts siAnd tiDefining and obtaining a tax key vsk of the tax supervision module, and transmitting the tax key vsk to a point cloud solution calculation module;
tax supervision module for two-dimensional space circulation group
Figure BDA0002813254040000096
Each pair s ofiAnd tiPerforming mod calculation to obtain
Figure BDA0002813254040000097
Obtaining a tax public key vpk of the tax supervision module, and transmitting the tax public key vpk to the taxpayer tax management module;
s2: the taxpayer tax administration module receives the tax public key vpk and the taxpayer tax information y, encrypts the taxpayer tax information y by using the tax public key vpk obtained in the step S1 to obtain first non-private data C, second non-private data D and encrypted taxpayer tax information Ei，
Figure BDA0002813254040000098
Will encrypt the taxpayer tax information EiTransmitting to a tax service module;
s3: the tax service module utilizes the tax model assignment factor set x obtained in the step S1iAnd the encrypted taxpayer tax information E obtained in the step S2iCarrying out tax payment calculation to form tax payment calculation result<xi，Ei>Performing function encryption calculation on the tax payment calculation result to obtain an encrypted tax payment calculation result f<xi，Ei>The result f of the calculation of the encrypted tax payment is obtained<xi，Ei>Transmitting to a point cloud solution calculation module;
s4: the point cloud solution calculation module utilizes the tax key vsk and the tax model assignment factor set x obtained in the step S1iForm with third non-private data sxAnd fourth non-private data txDefined tax model decryption keys vdk;
s5: the point cloud solution calculation module utilizes the tax key decryption key vdk obtained in the step S4 to calculate the encrypted tax payment calculation result f<xi，Ei>Carrying out decryption calculation to obtain a point cloud solution Ex：
Figure BDA0002813254040000101
S6: solving the point cloud E obtained in the step S5xAnd transmitting the data to a tax controller or a safe storage module for invoicing or tax data storage.
Further, the step of S2 includes the steps of:
s21: the taxpayer tax management module adopts two-dimensional space circulation group
Figure BDA0002813254040000102
The prime number g in the first non-private data is subjected to modulo operation to obtain first non-private data C ═ gr mod p；
S22: the taxpayer tax management module adopts two-dimensional space circulation group
Figure BDA0002813254040000103
Performing modulo operation on the prime number h in the first group to obtain second non-private data D ═ hr mod p；
S23: the taxpayer tax administration module adopts the first non-private data C obtained in the step S21 and the second non-private data D obtained in the step S22 to carry out encryption calculation on the taxpayer tax information y to obtain the encrypted taxpayer tax information
Figure BDA0002813254040000104
Will encrypt the taxpayer tax information EiAnd transmitting the point cloud solution to a point cloud solution calculation module.
The taxpayer tax information is encrypted by the taxpayer tax management module in the step S2 to obtain encrypted taxpayer tax information EiOnly the information of the first non-private data C and the second non-private data D is externally disclosed, so that the real taxpayer tax information y cannot be obtained, and when the information is transmitted to the point cloud solution calculation module for calculation, the safety of the sensitive information of the taxpayer tax information y can be effectively protected, and the operation efficiency is higher.
Further, the step of S4 includes the steps of:
s41: the point cloud solution computation module utilizes s in the tax key vskiAnd xiCalculating to obtain third non-private data sx：
Figure BDA0002813254040000111
S42: the point cloud solution computation module utilizes t in the tax key vskiAnd xiCalculating to obtain fourth non-private datatx：
Figure BDA0002813254040000112
S43: the point cloud solution calculation module utilizes the third non-private data S obtained in the step S21xAnd the fourth non-private data t obtained in the step of S22xA tax model encryption key vdk is defined.
Using s in tax key vsk through point cloud solution computation moduleiAnd xiObtaining third non-private data sxAnd fourth non-private data txFinally, the tax model encryption key vdk is defined to assign a factor set x to the tax modeliAvoiding the tax model assignment factor set x in the tax supervision moduleiPrivate information protection is carried out according to tax collection model assignments established by different taxpayer types and different types to be taxed, tax calculation assignments of tax collection supervision departments are prevented from leaking, and final point cloud solution E can be ensuredxOnly the first non-private data C, the second non-private data D and the third non-private data s are carriedxAnd fourth non-private data txThe information is stored after being shunted and classified, so that the true taxpayer tax payment information and information such as an accounting system of a tax administration department or tax collection model assignment and the like cannot be lost even if the memory is lost or hacked, and triple confidentiality is carried out.
Example 2
As shown in fig. 2-3, the three-party linked encryption tax control system provided in this embodiment includes a tax control microcontroller, a communication module, a tax control collection module, and a secure storage module, where the tax control microcontroller includes a tax administration module, a tax service module, a taxpayer tax administration module, and a point cloud solution calculation module;
a tax administration module for generating tax model assignment factor set x of the tax administration moduleiA tax key vsk and a tax public key vpk, and assigning a tax model value set xiTransmitting to tax service module and point cloud solution calculation module, and transmitting tax key vskThe point cloud solution calculation module is used for transmitting the tax public key vpk to the taxpayer tax administration module;
the taxpayer tax administration module is used for receiving and encrypting the taxpayer tax information y by using the tax public key vpk to obtain the encrypted taxpayer tax information EiThe encrypted taxpayer tax information EiTransmitting to a tax service module;
a tax service module for receiving a tax model assignment factor set xiEncrypted taxpayer tax information EiForming and functionally encrypting tax calculation results<xi，Ei>The result f of the calculation of the encrypted tax payment is obtained<xi，Ei>Transmitting to a point cloud solution calculation module;
a point cloud solution calculating module for calculating to obtain a final point cloud solution Ex；
A tax-control collection module for solving E according to the point cloudxBilling;
a secure storage module for solving the point cloudxAnd carrying out cloud storage.
The tax supervision module comprises: the tax public key generation module, the tax key generation module and the tax model assignment generation module;
the tax public key generating module is used for generating a tax public key vpk and transmitting the tax public key vpk to the taxpayer tax management module;
the tax key generation module is used for generating a tax key vsk and transmitting the tax key vsk to the point cloud solution calculation module;
a tax collection model assignment generation module for generating a tax collection model assignment factor set x suitable for the taxpayeriAnd constructing a tax collection model and various assignments thereof, and transmitting the tax collection model and the point cloud solution calculation module.
The taxpayer tax management module comprises: the tax public key receiving module, the taxpayer tax information receiving module and the encryption module;
the tax public key receiving module is used for receiving a tax public key vpk;
the taxpayer tax information receiving module is used for receiving taxpayer tax information y;
an encryption module for encrypting the taxpayer tax information y to obtain a first non-private data C, a second non-private data D and an encrypted taxpayer tax information Ei。
The tax service module comprises: the taxation model assignment receiving module, the taxation calculation result generating module and the function encryption module;
a tax collection model assignment receiving module for receiving the tax collection model assignment factor set xi；
A tax calculation result generation module for calculating tax calculation result<xi，Ei>；
A function encryption module for performing function encryption on the tax payment calculation result and encrypting the tax payment calculation result f<xi，Ei>And transmitting the point cloud solution to a point cloud solution calculation module.
The point cloud solution calculation module comprises: the tax model decryption key generation module, the encryption tax calculation result receiving module and the calculation module;
the tax model decryption key generation module is used for receiving the tax key vsk and generating a tax model decryption key vdk;
a receiving module for receiving the result f of the encrypted tax calculation<xi，Ei>；
A calculation module for decrypting the secret key vdk and encrypting the tax calculation result f according to the tax model<xi，Ei>Calculating tax point cloud solution Ex。
The safety storage module comprises a tax control information distribution module, a tax control information classification module and a tax control cloud storage module. Through tax control information reposition of redundant personnel module, the tax control information that the point cloud that will encrypt and carry out the calculation after and solve shunts according to the tax payment classification of difference, then utilize tax control information to classify the module and classify the back, upload in tax control cloud storage module, divide the reposition of redundant personnel, classify and carry out the cloud after the arrangement again and store and saved storage space on the one hand, on the other hand, the information query in later stage of can being convenient for, the time of inquiry and extraction information has been saved, be favorable to the long-term storage of information, the utilization ratio thereof is improved.
Example 3
As shown in fig. 4, the only difference from embodiment 2 is that the tax control system with three-party linked encryption provided in this embodiment further includes an information preprocessing module and a tax control two-dimensional code generating module,
the information preprocessing module is used for comparing whether the tax transaction information is correct or not, eliminating invalid information with noise and transmitting a signal of eliminating the invalid information to the central control module;
a tax-control two-dimensional code generation module for solving the finally formed point cloudxAnd after the two-dimensional code and the watermark are combined for secondary encryption, the two-dimensional code and the watermark are transmitted to the tax control collection module for invoicing.
The method adopts the digital watermark technology, embeds the tax control information into the digital carrier in a digital form to form signals, improves the accuracy of anti-counterfeiting identification, can judge the anti-counterfeiting at the system level through the effectiveness of the digital watermark embedded into the carrier, is different from the traditional mode of identifying the anti-counterfeiting label through human eyes, reduces the printing cost of the system, does not need to utilize the RFID label to perform anti-counterfeiting printing, and can have the corresponding two-dimensional code anti-counterfeiting characteristic only through common printing.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. A tax control method for three-party linkage encryption is characterized by comprising the following steps:
s1: the tax supervision module adopts prime number g and prime number h to form a circulation group of security prime number p
Figure FDA0002813254030000011
Will be represented by lThe dimensions of the vectors on which the dot products are performed are formed as a set of spatial vectors
Figure FDA0002813254030000012
Form a
Figure FDA0002813254030000013
Tax administration module tax model assignment factor set xiThe i is the number of the tax model assignment factor x, the i belongs to {1, …, l }, and the tax supervision module collects the tax model assignment factor xiTransmitting the data to a tax service module and a point cloud solution calculation module;
2l represents the circulating group
Figure FDA0002813254030000014
Is determined by the two-dimensional space vector dimension of (a),
Figure FDA0002813254030000015
is denoted by siAnd tiThe i belongs to {1, …, l }, and the tax administration module adopts the siAnd said tiDefining and obtaining a tax key vsk of the tax supervision module, and transmitting the tax key vsk to a point cloud solution calculation module;
the tax supervision module is used for circularly grouping the two-dimensional space
Figure FDA0002813254030000016
Each pair of s iniAnd said tiPerforming mod calculation to obtain
Figure FDA0002813254030000017
Obtaining a tax public key vpk of the tax supervision module, and transmitting the tax public key vpk to a taxpayer tax management module;
s2: the taxpayer tax administration module receives the tax public key vpk and the taxpayer tax information y, and encrypts the taxpayer tax with the tax public key vpk obtained in the step S1Receiving information y to obtain first non-private data C, second non-private data D and encrypted taxpayer tax receiving information EiSaid
Figure FDA0002813254030000018
The encrypted taxpayer tax information EiTransmitting to the tax service module;
s3: the tax service module utilizes the tax model assignment factor set x obtained in the step S1iAnd the encrypted taxpayer tax information E obtained in the step S2iCarrying out tax payment calculation to form tax payment calculation result<xi,Ei>Performing function encryption calculation on the tax payment calculation result to obtain an encrypted tax payment calculation result f<xi,Ei>The result f of the calculation of the encrypted tax payment is obtained<xi,Ei>Transmitting to the point cloud solution calculation module;
s4: the point cloud solution calculation module utilizes the tax key vsk obtained in the step S1 and the tax model assignment factor set xiForm with third non-private data sxAnd fourth non-private data txDefined tax model decryption keys vdk;
s5: the point cloud solution calculation module utilizes the tax key decryption key vdk obtained in the step S4 to calculate the encrypted tax payment calculation result f<xi,Ei>Carrying out decryption calculation to obtain a point cloud solution Ex：
Figure FDA0002813254030000021
S6: solving the point cloud obtained in the step S5 to obtain a solution ExAnd transmitting the data to a tax controller or a safe storage module for invoicing or tax data storage.
2. The method for tax control through three-party linked encryption according to claim 1, wherein the step of S2 comprises the steps of:
s21: the taxpayer taxThe collection management module adopts the two-dimensional space circulation group
Figure FDA0002813254030000022
The prime number g in the first non-private data is subjected to modulo operation to obtain first non-private data C ═ grmod p；
S22: the taxpayer tax administration module adopts the two-dimensional space circulation group
Figure FDA0002813254030000023
Performing modulo operation on the prime number h in the first group to obtain second non-private data D ═ hrmod p；
S23: the taxpayer tax administration module adopts the first non-private data C obtained in the step S21 and the second non-private data D obtained in the step S22 to encrypt and calculate the taxpayer tax information y to obtain encrypted taxpayer tax information
Figure FDA0002813254030000024
The encrypted taxpayer tax information EiAnd transmitting the point cloud solution to the point cloud solution calculation module.
3. A three-party linked encryption tax control method according to claim 3, wherein said step S4 comprises the steps of:
s41: the point cloud solution computation module utilizes the s in the tax Key vskiAnd said xiCalculating to obtain third non-private data sx：
Figure FDA0002813254030000025
S42: the point cloud solution computation module utilizes the t in the tax key vskiAnd said xiFourth non-private data t is obtained through calculationx：
Figure FDA0002813254030000031
S43: the point cloud solution calculation module utilizes the third non-private data S obtained in the step S21xAnd the fourth non-private data t obtained in the step of S22xA tax model encryption key vdk is defined.
4. A three-party linkage encrypted tax control system is characterized by comprising a tax control microcontroller, a communication module, a tax control collection module and a safety storage module, wherein the tax control microcontroller comprises a tax supervision module, a tax service module, a taxpayer tax management module and a point cloud solution calculation module;
the tax supervision module is used for generating a tax model assignment factor set x of the tax supervision moduleiA tax key vsk and a tax public key vpk, and assigning the tax model value set xiThe tax service module and the point cloud solution calculation module are transmitted, the tax key vsk is transmitted to the point cloud solution calculation module, and the tax public key vpk is transmitted to the taxpayer tax management module;
the taxpayer tax administration module is used for receiving and encrypting the taxpayer tax information y by using the tax public key vpk to obtain encrypted taxpayer tax information EiThe encrypted taxpayer tax information EiTransmitting to the tax service module;
the tax service module is used for receiving the tax model assignment factor set xiThe encrypted taxpayer tax information EiForming and functionally encrypting tax calculation results<xi,Ei>The result f of the calculation of the encrypted tax payment is obtained<xi,Ei>Transmitting to the point cloud solution calculation module;
the point cloud solution calculation module is used for calculating to obtain a final point cloud solution Ex；
The tax control collection module is used for solving the E according to the point cloudxBilling;
the secure storage module is used for solving the point cloud ExAnd carrying out cloud storage.
5. The three-party linked encryption tax control system according to claim 4, wherein the tax administration module comprises: the tax public key generation module, the tax key generation module and the tax model assignment generation module;
the tax public key generating module is used for generating a tax public key vpk and transmitting the tax public key vpk to the taxpayer tax management module;
the tax key generation module is used for generating a tax key vsk and transmitting the tax key vsk to the point cloud solution calculation module;
the tax collection model assignment generation module is used for generating a tax collection model assignment factor set x suitable for the taxpayeriAnd constructing a tax collection model and various assignments thereof, and transmitting the tax collection model and the point cloud solution calculation module.
6. The three-party linked encryption tax control system according to claim 4, wherein the taxpayer tax administration module comprises: the tax public key receiving module, the taxpayer tax information receiving module and the encryption module;
the tax public key receiving module is used for receiving the tax public key vpk;
the taxpayer tax information receiving module is used for receiving taxpayer tax information y;
the encryption module is used for encrypting the taxpayer tax information y to obtain first non-private data C, second non-private data D and encrypted taxpayer tax information Ei。
7. The three-party linked encryption tax control system according to claim 4, wherein the tax service module comprises: the taxation model assignment receiving module, the taxation calculation result generating module and the function encryption module;
the tax collection model assignment receiving module is used for receiving the tax collection model assignment factor set xi；
The tax calculation result generation module is used for calculating the tax calculation result<xi,Ei>；
The function encryption module is used for carrying out function encryption on the tax payment calculation result and encrypting the tax payment calculation result f<xi,Ei>And transmitting the point cloud solution to a point cloud solution calculation module.
8. The system of claim 4, wherein the point cloud solution computation module comprises: the tax model decryption key generation module, the encryption tax calculation result receiving module and the calculation module;
the tax model decryption key generation module is configured to receive the tax key vsk and generate a tax model decryption key vdk;
the encrypted tax calculation result receiving module is used for receiving the encrypted tax calculation result f<xi,Ei>；
The calculation module is used for decrypting the key vdk and encrypting the tax calculation result f according to the tax model<xi,Ei>Calculating tax point cloud solution Ex。
9. The three-party linkage encryption tax control system according to claim 4, wherein the secure storage module comprises a tax control information distribution module, a tax control information classification module and a tax control cloud storage module.
10. The three-party linked encryption tax control system according to any one of claims 4 to 9, wherein the tax control system further comprises an information preprocessing module and a tax control two-dimensional code generating module,
the information preprocessing module is used for comparing whether the tax transaction information is correct or not, eliminating invalid information with noise and transmitting a signal of eliminating the invalid information to the central control module;
the tax-control two-dimensional code generation module is used for solving the finally formed point cloud ExCarry out two-dimensional code and waterAnd after the printing is combined with the secondary encryption, the printing is transmitted to the tax control collection module for invoicing.
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