Application of Cryptographic Technology Based on Certificateless System in Electricity Internet of Things

With the construction of Internet of things, relying on big data, cloud computing, artificial intelligence, Internet of things and blockchain and other new technologies, data integration between various network systems has been accelerated and the gap between data islands has been broken. However, due to the large scale of terminal access, complex business operation relationship, network system vulnerability and more and more loopholes, the traditional network security technology is difficult to ensure the security of the system. This paper proposes to solve the security problems caused by large-scale terminal access by using the certificate-free security mechanism based on domestic cryptography, so as to provide security guarantee for the construction of electricity internet of things. At the same time, in order to meet the security requirements of energy Internet information interaction, this paper proposes a decentralized key management idea to solve the traditional IBC (identity based Cryptograph) algorithm key update problem, improve the security management and control ability of the system, and comprehensively support the construction of world-class energy Internet enterprises with excellent competitiveness.