Electric power metering terminal identity authentication method and system based on timestamp

Abstract

The invention discloses an electric power metering terminal identity authentication method and system based on a timestamp. The method comprises the steps that a sender calculates a first equipment identification key according to equipment identity information of a metering terminal; the sender determines an auxiliary character string according to a timestamp when the communication event occurs and preset data, and performs XOR operation on the public key and the auxiliary character string to obtain auxiliary information; the sender uses the equipment identity information as a plaintext, and encrypts the plaintext by using the public key to obtain a ciphertext; the receiver determines an auxiliary character string according to the timestamp and preset data, and performs one-by-one specific OR on the auxiliary character string and the received auxiliary information to obtain the public key; the receiver decrypts the received ciphertext by using the public key to obtain the plaintext; the receiver calculates a second equipment identification key according to the plaintext; and the receiver calculates the similarity between the first equipment identification key and the second equipment identification key, and determines an authentication result according to the similarity.

Description

technical field [0001] The present invention relates to the technical field of identity authentication of advanced electric power metering terminals, and more particularly, to a method and system for identity authentication of electric power metering terminals based on time stamps. Background technique [0002] Advanced Metering Infrastructure (AMI) is a complete system, which is composed of several important parts such as smart meters, advanced communication networks, collectors and concentrators, and background software. The function of AMI is to use the smart meter and the two-way communication system that records the detailed load information of the user to obtain various metering value information with time scales, such as power consumption, power demand, voltage, and current, etc., and establish a close relationship with the user. Contact, and issue information and commands to the client. As the core component of the smart grid, AMI realizes the two-way communication ...

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a time stamp-based power metering terminal identity authentication method and system to solve the problem of how to realize the anti-counterfeiting of the identity mark of the advanced power metering terminal access device

Images