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Journal of Applied Mathematics
Volume 2014, Article ID 149649, 9 pages
http://dx.doi.org/10.1155/2014/149649
Research Article

Two-Dimensional Key Table-Based Group Key Distribution in Advanced Metering Infrastructure

1ISAA Lab, Department of Information Security Engineering, Soonchunhyang University, Eumnae-ri, Shinchang-Myeon, Asan-si, Chungcheongnam-do 336-745, Republic of Korea
2Department of Information Security Engineering, Soonchunhyang University, Eumnae-ri, Shinchang-Myeon, Asan-si, Chungcheongnam-do 336-745, Republic of Korea

Received 13 November 2013; Accepted 21 January 2014; Published 14 May 2014

Academic Editor: Jongsung Kim

Copyright © 2014 Woong Go and Jin Kawk. 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.

Abstract

A smart grid provides two-way communication by using the information and communication technology. In order to establish two-way communication, the advanced metering infrastructure (AMI) is used in the smart grid as the core infrastructure. This infrastructure consists of smart meters, data collection units, maintenance data management systems, and so on. However, potential security problems of the AMI increase owing to the application of the public network. This is because the transmitted information is electricity consumption data for charging. Thus, in order to establish a secure connection to transmit electricity consumption data, encryption is necessary, for which key distribution is required. Further, a group key is more efficient than a pairwise key in the hierarchical structure of the AMI. Therefore, we propose a group key distribution scheme using a two-dimensional key table through the analysis result of the sensor network group key distribution scheme. The proposed scheme has three phases: group key predistribution, selection of group key generation element, and generation of group key.