針對分布式測控系統(tǒng)數(shù)據(jù)加密傳輸?shù)膽?yīng)用要求，通過對DES 算法和Modbus 協(xié)議原理分析，給出了整個設(shè)計(jì)的原理框圖，使用Verilog HDL 實(shí)現(xiàn)了DES 算法和通信協(xié)議的IP 核設(shè)計(jì)，最后對測控?cái)?shù)據(jù)進(jìn)行加密傳輸測試，結(jié)果顯示該方法能較好的滿足數(shù)據(jù)實(shí)時加密通信的指標(biāo)要求，整個設(shè)計(jì)具有較好的現(xiàn)實(shí)意義和應(yīng)用價值。
【關(guān)鍵詞】Verilog 語言；DES 加密；Modbus 協(xié)議

A IP Core Interface Design of the data encryption system and Modbus Protocol
JIANG Cun-bo,SUN Chao-hua,TANG Bo,FU Han,DU Ting-ting (Electrical Engineering Department of GUT Guilin 541004 China) 【Abstract】In this paper,the author gives the iterative algorithm of the DES and Modbus Protocol in the hardware description language, with the requirements of the Distributed control system for transmission of data encryption, and completes the IP core design of the DES algorithm and the Modbus protocol with the help of the Verilog HDL Language and the FPGA chip EP2C5T144C6. at last,the test results to the network control module under the control of C8051F020 processor and the IP core chip show that this method can better meet the need of the real-time data encryption communication.
【Keywords】Verilog Language ；DES Encrypting；Modbus Protocol