基于窄带物联网的铁路通信网络安全加密控制系统设计

Design of Railway Communication Network Security Encryption Control System Based on Narrowband IoT

铁路通信网络在数据传输过程中容易受到网络攻击,降低网络的安全性;为了解决这个问题,设计了基于窄带物联网的铁路通信网络安全加密控制系统;以STM32F103为窄带物联网的控制终端芯片,用于采集、处理和分析数据,通过控制终端与人机接口,使用USART实现计算机的下载及调试,设计接口数据传输电路,采用拨码开关电路完成输入端电流信号和电压信号的切换,并通过调整电阻尺寸来校正输出电压,实现数据的高效传输;应用窄带物联网加密技术,确保每个子机构都具备唯一的属性密钥,结合AES加密算法将数据加密成密文,通过逆变换、解密处理,获取噪声相位,避免乱序密文影响子密文排序,实现通信网络安全加密控制;由系统测试结果可知:所设计系统信道误码率最大值未超过30%,网络吞吐量最大值为260 bit/s,具有高效加密控制能力。

Railway communication network is prone to network attacks during data transmission,which reduces the security of the network.To address this issue,a railway communication network security encryption control system based on the narrowband Internet of Things was designed.Using STM32F103 as a narrowband IoT control terminal chip,it is used to collect,process,and analyze the data.Through the control terminal and human-machine interface,USART is used to download and debug the computer,and design the interface data transmission circuit.The input current signal and voltage signal are switched by using a dial switch circuit,and the output voltage is corrected by adjusting the resistance to achieve efficient data transmission.The narrowband IoT encryption technology is applied to ensure that each sub organization has a unique attribute key.Combined with AES encryption algorithm,the data is encrypted into the ciphertext.Through inverse transformation and decryption processing,noise phase is obtained to avoid disordered ciphertext affecting the sorting of sub ciphertext,and achieve the communication network security encryption control.Testing results show that the maximum channel error rate of the designed system does not exceed 30%,and the maximum network throughput is 260 bit/s,which has efficient encryption control capability.