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Sensors 2015, 15(8), 20799-20824; doi:10.3390/s150820799

Towards a Low-Cost Remote Memory Attestation for the Smart Grid

1,†
,
1,†
,
2
,
1,†,* , 1,†
,
3,†
and
4
1
Department of Computer Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
2
Department of Computer and Information Sciences, Towson University, Towson, MD 21252, USA
3
SKLMSE Lab, School of Electronic Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China
4
Department of Electrical and Computer Engineering, West Virginia University, Montgomery, WV 25136, USA
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editors: Yunchuan Sun, Antonio Jara and Shengling Wang
Received: 27 June 2015 / Revised: 9 August 2015 / Accepted: 13 August 2015 / Published: 21 August 2015
(This article belongs to the Special Issue Identification, Information & Knowledge in the Internet of Things)
View Full-Text   |   Download PDF [500 KB, uploaded 21 August 2015]   |  

Abstract

In the smart grid, measurement devices may be compromised by adversaries, and their operations could be disrupted by attacks. A number of schemes to efficiently and accurately detect these compromised devices remotely have been proposed. Nonetheless, most of the existing schemes detecting compromised devices depend on the incremental response time in the attestation process, which are sensitive to data transmission delay and lead to high computation and network overhead. To address the issue, in this paper, we propose a low-cost remote memory attestation scheme (LRMA), which can efficiently and accurately detect compromised smart meters considering real-time network delay and achieve low computation and network overhead. In LRMA, the impact of real-time network delay on detecting compromised nodes can be eliminated via investigating the time differences reported from relay nodes. Furthermore, the attestation frequency in LRMA is dynamically adjusted with the compromised probability of each node, and then, the total number of attestations could be reduced while low computation and network overhead can be achieved. Through a combination of extensive theoretical analysis and evaluations, our data demonstrate that our proposed scheme can achieve better detection capacity and lower computation and network overhead in comparison to existing schemes. View Full-Text
Keywords: smart measurement devices; code injection attack; software-based attestation; smart grid smart measurement devices; code injection attack; software-based attestation; smart grid
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Yang, X.; He, X.; Yu, W.; Lin, J.; Li, R.; Yang, Q.; Song, H. Towards a Low-Cost Remote Memory Attestation for the Smart Grid. Sensors 2015, 15, 20799-20824.

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