基于区块链技术的工控数据安全传输系统设计

Design of Industrial Control Data Security Transmission System Based on Blockchain Technology

目前工控数据存在安全传输系统加密速率较低,导致加密过程稳定性较差;为了解决上述问题,基于区块链技术设计了一种新的工控数据安全传输系统;系统硬件采用嵌入式的麒麟990处理器,处理器由单片机、内存器以及扩展电路组成,采用双频JJSH-9传输器代替传统的传输器;传输器两端设置双频的GPS接收天线,完成工控数据的发送和接收工作,配置PLC多路导轨式控制器;利用非对称加密算法,对需要传输的工控数据进行加密,保证数据的安全性;非对称加密算法由数据加密和解密两部分组成,算法通过密钥空间序列自动生成密钥对,可以生成解密密钥,完成解密;实验结果表明,基于区块链技术的系统传输速率在15~20 kbps范围内,传输速率波动平稳;传输效率在95%~99%之间,能够保证加密速率和数据传输的稳定性。

Data secure transmission systemfor current industrial control existslow encryption rate,whichresults in poorstability of encryption process.In order to solve the above problems,a new industrial control data secure transmission system is designed based on blockchain technology.The system hardware adopts the embedded Kirin 990 processor,which is composed of single-chip microcomputer,memory and expansion circuit,anddual-frequency JJSH-9 transmitter is adopted to replace the traditional transmitter.The two ends of transmitter are equipped with dual-frequency GPS receiving antennas to complete the transmission and reception of industrial control data,and configure a PLC multi-channel guide rail controller.An asymmetric encryption algorithm is used to encrypt the industrial control data that needs to be transmitted to ensure data security.The asymmetric encryption algorithm is composed of two parts:data encryption and decryption.The algorithm automatically generates a key pair through the key space sequence,and the decryption key is generated to complete the decryption.The experimental results show that the systemtransmission ratebased on blockchain technology is within the range of 15~20 kbps,and the transmission ratefluctuatessmoothly;the transmission efficiency is between 95%~99%,which can ensurethe stability ofencryption rate and data transmission.