CPLD-based method for safely managing electronic counterfoil

Abstract

The invention provides a CPLD-based method for safely managing an electronic counterfoil and aims to provide a method for realizing correct generation and reliable storage of the electronic counterfoil so as to reduce the number of paper invoices for an industrial taxpayer. The method comprises the following steps of: centrally managing scattered invoice making terminals of the industrial taxpayer by using a PCI printed circuit board which mainly comprises a CPLD chip on the premise of conforming to relevant national invoice management and safety requirements and not affecting the invoice making efficiency of the taxpayer and the performance of an original service system; and signing electronic counterfoil data to realize the correct generation and reliable storage of the electronic counterfoil. Therefore, the condition of reducing the number of the paper invoices for the industrial taxpayer is met, operation costs on the printing of the invoices and the storage of paper invoice stubs are lowered, convenience is brought to a competent tax authority to query the electronic counterfoil data in time and invoice management requirement is met.

Description

technical field [0001] The invention relates to the technical field of tax control bill anti-counterfeiting processing, in particular to a bill anti-counterfeiting method based on CPLD and tax control encryption chip. Background technique [0002] Bills, as receipt and payment vouchers in business operations, are an important means of corporate financial and accounting management, as well as important evidence for tax audits. The basic pages of bills include stub pages, bill pages, and bookkeeping pages, among which the stub pages are kept by the taxpayer for inspection by the tax authorities. For industries with a huge amount of bills, such as mobile, China Unicom, telecommunications, postal and other industry taxpayers (hereinafter referred to as industry taxpayers), the cost of printing multi-page paper bills is very high, and the preservation of bill stubs also takes up a lot of business operations. area, resulting in high operating costs for taxpayers in the industry, ...

AI Technical Summary

Problems solved by technology

For industries with a huge amount of bills, such as mobile, China Unicom, telecommunications, postal and other industry taxpayers (hereinafter referred to as industry taxpayers), the cost of printing multi-page paper bills is very high, and the preservation of bill stubs also takes up a lot of business operations. area, resulting in high operating costs for taxpayers in the industry, and also consumes a lot of paper, which does not meet the requirements of creating a "saving society"

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