Research on Power Distribution Operation and Maintenance Security Technology Based on Z Algorithm

This paper designs and proposes a secure operation and maintenance system based on Z password algorithm for the security requirements of electric Internet of Things, identity authentication and session key negotiation of handheld operation and maintenance terminal devices in wireless environment. The design idea of deep fusion of user key and algorithm is different from the traditional block cipher design which emphasizes the standardization of algorithm and secret key. The variable password logic of fusion of key and algorithm ensures the different logical structure of password algorithm among different users. Different logic not only refers to different password parameters used, but also different hierarchical structures, different operations, different components, and different data flows, so as to ensure that all users adopt different password algorithms, which can be called "one person one secret + one time one secret", which greatly improves the security of the system. The design considers the safety requirements such as instance safety, system safety and distance safety, and realizes the safety operation and maintenance and software realization in the aspect of power intelligent terminal, so as to facilitate the management and update.