摘要
针对税控领域中发票数据的防伪问题,设计了一种基于FPGA的税控算法加密卡。该加密卡以FPGA为控制核心,通过嵌入式PCI-IP核实现了PCI总线的接口逻辑,并利用状态机控制税控密码算法芯片高效运行,另外,设计的DMA控制器实现了数据的快速传输。通过仿真验证,该设备应用于税控行业,可保证发票数据的正确加密和可靠存储。
A tax algorithm encryption card based on FPGA is designed for the demand of tax invoice identifica- tion in the field of taxation. FPGA is the kernel unit of this card and it utilizes embedded PCI-IP core to realize the interface logic of PCI bus. FPGA makes tax cryptographic algorithm chips function efficiently by using Finite State Machine and it realizes the fast transmission of data with the DMA controller. This device is applied in tax depart- ment and it encrypts and stores data correctly.
出处
《电子科技》
2014年第12期175-178,180,共5页
Electronic Science and Technology
