FPGA (Field Programmable Gate Array)-based algorithm encryption card specially for tax control

Abstract

The invention provides an FPGA (Field Programmable Gate Array)-based algorithm encryption card specially for tax control, comprising an FPGA chip, a cryptographic algorithm chip specially for the tax control, an FPGA configuration chip, a power chip and a PCI-IP (Peripheral Component Interconnect-Intellectual Property) core. The data interaction between the encryption card and a host is carried out through a 32 bit PCI bus. The FPGA-based algorithm encryption card specially for the tax control is mainly used for the data encryption and decryption operations of the field of the tax control; the interface logic of the PCI bus is realized by utilizing the FPGA and the embedded PCI-IP core technology; and the running of a cipher chip is controlled through a state machine of the FPGA. The encryption card has the advantages of fast speed, high efficiency, low cost and small power consumption.

Description

An FPGA-based special algorithm encryption card for tax control technical field The invention relates to a computer application technology, in particular to an FPGA-based special algorithm encryption card for tax control. Background technique Due to the flaws in the production of invoices and the loopholes in the management of the tax control department, fake invoices are rampant in my country at present, causing a large amount of tax loss to the country. On the one hand, relevant personnel engaged in catering, service, commerce, construction and transportation will buy fake invoices for the purpose of tax evasion; on the other hand, relevant personnel of many enterprises will buy a large number of wigs under the shady cash transaction for embezzlement ticket. At present, national tax, local tax, provinces, and various tax invoices are different, and it is very difficult to distinguish, so it is an opportunity for counterfeiters. The FPGA-based special algorithm encrypti...

AI Technical Summary

Problems solved by technology

Due to the flaws in the production of invoices and the loopholes in the management of the tax control department, fake invoices are rampant in my country at present, causing a large amount of tax loss to the country

Images