Abstract
With the development of Internet technology and Internet of Things technology, the Internet of Everything has become a hot topic, and in March 2019, the National Grid for the first time clarified the definition of the Pan-In Power Internet of Things, pointing out that the company’s most urgent and important task is to accelerate the construction of the Pan-In Power Internet of Things. The security of Data Transfer on-line at any time is particularly important, in order to ensure the security of data, in the process of data transmission, data needs to be encrypted. This paper expounds a model of the information source data encryption algorithm, analyzes the encryption algorithm and the encryption method, and then provides a reference basis for the data transmission data security of power system.