Home // International Journal On Advances in Intelligent Systems, volume 7, numbers 3 and 4, 2014 // View article

Security System for Connected End-point Devices in a Smart Grid with Commodity Hardware

Authors:
Hiroshi Isozaki
Jun Kanai
Shunsuke Sasaki
Shintarou Sano

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

Abstract:
Security has an important bearing on achieving successful commercial deployment of smart grids. In particular, availability is accorded the highest priority in smart grids. For end-point 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 enabling end-point devices to monitor the status of the operating system and to recover even if they stop working owing to unexpected behavior or cyber-attacks, including zero-day attacks. LiSTEE(TM) Recovery provides further functions to prevent illegitimate memory modification and to notify a head-end 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 sufficiently small to be ignored. Furthermore, we observed that the cost of production and maintenance can be minimized.

Pages: 533 to 546

Copyright: Copyright (c) to authors, 2014. Used with permission.

Publication date: December 30, 2014

Published in: journal

ISSN: 1942-2679