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Keeping High Availability of Connected End-point Devices in Smart Grid

Authors:
Hiroshi Isozaki
Jun Kanai
Shunsuke Sasaki
Shintarou Sano

Keywords: Smart Grid, Smart Meter, Concentrator, Security, High Availability, TrustZone

Abstract:
Security is an important aspect to achieve Smart Grid success in terms of commercial deployment. Particularly, availability gets the highest priority in Smart Grids. For endpoint devices, such as smart meters or concentrators, this must be true since they must always be working. We present LiSTEE(TM) Recovery, an architecture for a fault tolerant system for end-point devices to monitor the status of the operating system and to recover even if they stop working due to unexpected behavior or cyber attack including zero-day attack. LiSTEE(TM) Recovery provides further functions to prevent illegitimate memory modification and to notify a headend system once a security incident occurs. We demonstrate a full implementation of LiSTEE(TM) Recovery on a TrustZone capable ARM based processor. Our experiment shows that the performance degradation is small enough to be ignored. Furthermore, we observed that the cost of production and maintenance can be minimized.

Pages: 73 to 80

Copyright: Copyright (c) IARIA, 2014

Publication date: April 20, 2014

Published in: conference

ISSN: 2308-412X

ISBN: 978-1-61208-332-2

Location: Chamonix, France

Dates: from April 20, 2014 to April 24, 2014