Intelligent electric meter interaction method based on differential privacy encryption and interaction terminal thereof

The invention discloses an intelligent electric meter interaction method based on differential privacy encryption and an interaction terminal thereof. The method comprises the following steps: STEP1: data preprocessing: 1.1: collecting power use data of each user i in a sliding window: Xi = {xi1, xi2,..., xiw}; wherein w is the window size; the method comprises the following steps of: 1, high privacy protection: carrying out personalized encryption processing on power use data of each user through a differential privacy encryption method, and protecting the privacy of the user; the randomness is introduced into the differential privacy protection scheme, so that even for the same input data, the output encryption results are different, and the privacy protection level of the user is improved. And 2, data security: an encryption algorithm and a communication security measure are adopted in the technology of the invention, and the transmission and storage security of the data of the intelligent electric meter i