Intelligent distribution terminal security protection method based on asymmetric digital signature authentication

Abstract

The invention discloses an intelligent distribution terminal security protection method based on asymmetric digital signature authentication. According to the actual characteristics of an intelligent distribution terminal, asymmetric digital signature authentication is realized on the distribution terminal; and the authentication of a digital signature technology can be realized by making small changes on the conventional communication protocols of the conventional distribution automation system without redefining a new communication protocol, namely the authentication of the digital signature technology can be realized by adding a digital signature section and a timestamp security information section of a sending party on the basis of the original standard protocol communication message section. The compatibility with the protocol before renovation is guaranteed, the renovation cost is low, and the method is easy to implement in engineering project construction, so that the risk of the distribution automation system from public network attack is reduced, and the operation security of the distribution automation system is guaranteed; and therefore the method has a good application prospect.

Description

technical field [0001] The invention relates to an intelligent power distribution terminal safety protection method based on asymmetric digital signature authentication, and belongs to the technical field of power systems and automation thereof. Background technique [0002] With the acceleration of the country's construction of a strong and smart grid, the construction of medium and low voltage distribution automation systems has developed rapidly. However, due to the characteristics of many points and a wide range of distribution automation systems, not all points in the distribution automation system Using optical fiber for communication, some low- and medium-voltage power distribution automation systems that do not have the conditions for optical fiber communication use public network communication to transmit control commands, and all messages are transmitted in plain text, causing intelligent power distribution terminals to face the risk of attacks from public networks ...

AI Technical Summary

Problems solved by technology

[0002] With the acceleration of the country's construction of a strong and smart grid, the construction of medium and low voltage distribution automation systems has developed rapidly. However, due to the characteristics of many points and a wide range of distribution automation systems, not all points in the distribution automation system Using optical fiber for communication, some low- and medium-voltage power distribution automation systems that do not have the conditions for optical fiber communication use public network communication to transmit control commands, and all messages are transmitted in plain text, causing intelligent power distribution terminals to face the risk of attacks from public networks , affecting the safe and reliable power supply to users, and at the same time, there is a risk of intrusion into the main station through the sub-station terminal, resulting in a wider range of security threats

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