Intelligent power grid data encryption method and decryption method with forward security

Abstract

The invention discloses an intelligent power grid data encryption method with forward security. The method comprises the following steps: a control center registers an aggregation gateway after receiving a registration request sent to the control center by the aggregation gateway, a public key K used for encrypting plaintext data is sent to the aggregation gateway; the aggregation gateway registers the intelligent electric meter after receiving a registration request sent to the aggregation gateway by the ith intelligent electric meter Ii, sends a public key K to the intelligent electric meter; a counter j=0 is set, whether j is less than or equal to a time period T is judged; and if yes, the ith intelligent electric meter Ii selects the ID number of the ith intelligent electric meter Ii and generates a random number ti,j, calculates and discloses a time reference variable Ri,j according to the random number ti,j, and sends the random number ti,j, the ID number IDi of the ith intelligent electric meter Ii and the time reference variable Ri,j to the control center. According to the invention, the signature private key is updated in a fixed time period, the forward security of signature information is ensured, and the aggregation and verification of digital signatures are completed without using bilinear pairs.

Description

technical field [0001] The invention belongs to the technical field of smart grid security, and more specifically, relates to a smart grid data encryption method and decryption method with forward security. Background technique [0002] Smart grid is a modern transmission network that integrates communication, sensing, automation, computer, control and other technologies. The smart grid uses communication technology to collect power supply status data at the supply end and power usage data at the user end, and achieves the goals of reducing losses, saving energy, and enhancing grid communication security through coordination and control. As one of the important public infrastructures for the development of countries and cities today, the smart grid has the characteristics of safety and reliability, two-way interaction, cost-effectiveness, compatibility and self-healing. In recent years, due to the rapid development of my country's economy and network technology, my country'...

AI Technical Summary

Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a smart grid data encryption method and decryption method and decryption method with forward security, the purpose of which is to solve the computational Technical problems such as high overhead, easy key stealing, and high equipment overhead

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