Digital Signature-based Secure Data Transmission Protocol And Simulation For Power Collection

Most power data collection terminals are deployed in an unsupervised environment,and have weak points such as weak computing power and limited network bandwidth.In the process of data transmission with the platform,no identity authentication is performed,and data is usually transmitted in clear text.As a result,the data generated by terminal operation is at risk of eavesdropping and tampering.Therefore,how to ensure the safety and reliability of data transmission between the terminal equipment and the platform is an urgent problem that needs to be solved during the construction of the power data acquisition system.The attacks on the power data acquisition system platform are divided into active attacks(tampering,forgery,replay,etc.)and passive attacks(eavesdropping,etc.).To realize the secure transmission of power data collection terminal equipment and platform data,two problems need to be solved: one is Data authentication to ensure the reliability of information sources;the second is data security to ensure the confidentiality of data.This paper proposes a new set of secure data transmission protocols for power collection.The main innovations are as follows:1.In the protocol,the national secret signature algorithm SM9 is used to sign the data to solve the reliability problem of the data source,and a key negotiation scheme based on the SM9 logo signature algorithm is designed to analyze the security and efficiency of the protocol.Analysis shows that the protocol has good computing efficiency and security,can resist common active attacks and passive attacks,and can be better applied to the power data collection environment well.2.In view of the weak computing capacity and limited data transmission capacity of the data acquisition system of the power data acquisition system,an ultra-lightweight data stream encryption scheme is proposed,which is easy to implement in hardware and has fast encryption and decryption speed.3.Through the MIRACL library,the national secret SM9 signature algorithm and the ultra-lightweight data stream encryption algorithm are implemented.Through cross-platform compilation,a unified standard algorithm call for multiple platforms is realized,which is further encapsulated as so and dll.Provides algorithms for linux platforms and windows Services,and put into application in the national grid voltage data safety collection platform.