A blockchain-based secure tax control invoice data transaction method

Abstract

The present invention relates to a blockchain-based secure tax control invoice data transaction system, including a secure multi-party computing module, which is set locally on the user to encrypt and calculate the invoice data; the blockchain application system realizes alliance chain operation and maintenance, storage Certificate and transaction contract management; transaction management platform, which manages transactions between user nodes; tax control data application system, which controls and manages transaction offline business processes. The present invention also relates to a blockchain-based secure tax control invoice data transaction method. When conducting transactions on the alliance chain, the invoice data demander provides the invoice ciphertext data that has been statistically equivalent calculated using the secure multi-party computing module. For calculation on the alliance chain, and then complete the transaction. The system and method in the present invention are based on the alliance chain system. In the transaction process, the tax-controlled invoice data transaction functions of data privacy protection, traceability, integrity and authenticity are realized during the transaction process, and the safe transaction sharing of tax-controlled invoice data is promoted. .

Description

technical field [0001] The invention relates to a blockchain-based security tax control invoice data transaction system, and the invention also relates to a blockchain-based security tax control invoice data transaction method. Background technique [0002] Tax control invoice data is relational data, including elements that can be used for statistical calculations such as quantity, amount, and invoice date. The application of invoice big data mainly involves algebraic operations such as addition, multiplication, and mean square error, as well as logical comparison operations. [0003] At present, the risk assessment of lending by financial institutions and the credit investigation of credit agencies require the tax control invoice data of corporate users for risk assessment and data sharing transactions. On the one hand, corporate users hope to obtain income from loans and data transactions, but on the other hand, they have concerns about providing their original plaintext...

AI Technical Summary

Problems solved by technology

On the one hand, corporate users hope to obtain income from loans and data transactions, but on the other hand, they have concerns about providing their original plaintext data to financial or credit agencies, worrying about data security, data abuse, and privacy protection.

For example, the Chinese invention patent application with publication number CN109785127A (application number 201910244895.6) "A sales invoice verification method, system and related equipment", and the Chinese invention patent application with publication number CN106355488A (application number 201610856919.X) " A Tax Control Method and System Based on Credit Reporting", in which, during the implementation of the disclosed scheme, due to the need to transmit plain text data of invoices, there are problems such as data security, data abuse, and privacy protection

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