Electric energy meter firmware program upgrading method and device based on ESAM, medium and equipment

A firmware program and electric energy meter technology, which is applied to electrical components, software deployment, and electrical signal transmission systems, can solve problems such as repeated resource application attacks, electric energy meter data tampering, illegal code attacks, etc. missing effect
CN112688942AActive Publication Date: 2021-04-20GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD
Publication Date
2021-04-20

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Abstract

The embodiment of the invention relates to an electric energy meter firmware program upgrading method and device based on ESAM, a medium and equipment. The method comprises: transmitting upgrading file information through identity authentication of a master station and an electric energy meter, and encrypting and decrypting the upgrading file information transmitted by the master station and the upgrading file information received by the electric energy meter by adopting an ESAM security module; after ensuring that only after the electric energy meter receives legal and correct upgrading file information, the main station transmitting an upgrading data packet to the electric energy meter, firmware program upgrading can be conducted only after the electric energy meter decrypts the upgrading data packet and passes verification, integrity and reliability checking of the upgrading data packet is achieved, data loss of the upgrading data packet is avoided. The firmware program of the electric energy meter cannot be upgraded, and the risks of abnormal attacks such as information interception, illegal code attacks, repeated upgrading attacks, repeated resource application attacks and electric energy meter data tampering in the upgrading process are avoided.
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Description

technical field

[0001] The invention relates to the technical field of meter data security, in particular to an ESAM-based firmware program upgrade method, device, medium and equipment for electric energy meters. Background technique

[0002] At present, the security module and associated key management of the main station are added to the centralized reading system of electric energy meters. The main station sends the upgrade package data processed by the asymmetric encryption algorithm to the concentrator, and the main station sends the broadcast key to the electric energy meter. The concentrator broadcasts and sends the upgrade package data of the energy meter to the energy meter. After receiving the upgrade data package, the energy meter performs an asymmetric algorithm to verify the legitimacy of the data, and receives the upgrade package one by one until all the upgrade packages are received. The energy meter also passes the asymmetric The algorithm verifies the legali...

Claims

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