Safety certification method for smart grid AMI system

A technology of smart grid and security authentication, which is applied in the direction of security communication devices, electrical components, transmission systems, etc., can solve the problems of inability to undertake security authentication algorithms, limited storage and computing capabilities, and low bandwidth of communication networks, achieving low power consumption, The authentication process is simple and the effect of increasing security

Inactive Publication Date: 2016-06-08
TIANJIN UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

The communication network bandwidth of the AMI system is relatively low, and the traditional complex certificate authentication process requires wide bandwidth support, which is not suitable for the AMI system
Embedded terminals such as smart meters and smart routers have limited storage and computing capabilities, and cannot undertake complex security authentication algorithms

Method used

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  • Safety certification method for smart grid AMI system

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Embodiment Construction

[0021] The present invention is applied in the AMI framework. The aggregation router is responsible for forwarding all authentication messages through uncontrolled ports, and opens the controlled ports if the smart grid terminal passes the authentication. Before the smart grid terminal connects to the smart grid, it must submit an authentication request to the aggregation router. Before the authentication is passed, it cannot use Mesh technology to form a network with other smart grid terminals, nor can it access other resources in the smart grid.

[0022] During the authentication process, the smart grid terminal sends an authentication request to the aggregation router, and after the aggregation router allows the authentication request, it sends a SCEP certificate request message, and the aggregation router forwards it to the RA. After the RA audits, the SCEP message is forwarded to the CA through firewall filtering. After CA verification and calculation, the CA issues the c...

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Abstract

The invention relates to a safety certification method for a smart grid AMI system. The safety certification method is suitable for the IEEE802.1x protocol certification method based on SCEP expansion of the smart grid AMI system, the SCEP is used as the certification mode of a smart grid terminal for accessing the AMI system and is used as an IEEE802.1x protocol expansion certification mode, namely, under the control of the IEEE802.1x protocol, SCEP certification can be only carried out on the non-certificated smart grid terminal by an uncontrolled port of the IEEE802.1x protocol; and the certificated smart grid terminal can access the AMI system through a controlled port of the IEEE802.1x protocol. The safety certification method provided by the invention is suitable for simple certificates and is used for guaranteeing to completely isolate the AMI system resources before the smart terminal is authorized to access the AMI system.

Description

technical field [0001] The invention belongs to the technical field of computer network security, and relates to a network security authentication method, in particular to an IEEE802.1x protocol authentication method based on SCEP extension in a smart grid AMI system. Background technique [0002] The smart grid is the first step towards the future energy Internet, and it is the key to rationally deploying power generation, power distribution and user power consumption. Smart grid is of great significance for improving energy utilization, integrating distributed energy into the grid, dynamically adjusting grid load, and enhancing user interaction. It is a key part of the development of the next generation of energy Internet. The smart grid is the product of the integration of the power grid and the information network. The information network provides means for each component in the power grid to communicate and dispatch each other, making the operation of the power grid int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32
CPCH04L9/3249H04L9/3239H04L9/3263
Inventor 金志刚苏菲苏毅姗
Owner TIANJIN UNIV
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