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Journal of Information Science and Engineering, Vol. 29 No. 2, pp. 281-298 (March 2013)

Hybrid Key Management Architecture for Robust SCADA Systems*

1Samsung Electronics
Suwon-si, Gyeonggi-do, 443-742 Korea
2Information Security Group
Sungkyunkwan University
Suwon-si, Gyeonggi-do, 440-746 Korea
3Center for Information Security Technologies
Korea University
Seoul, 136-701 Korea

Recently, as a demand for connecting Supervisory Control and Data Acquisition (SCADA) systems to open networks increases, the study of SCADA system security becomes an issue. Many researchers have proposed key management schemes for SCADA systems. However, previous studies lack the proper considerations for availability. In this paper, we build up cryptographic security requirements for robust SCADA systems. In addition, we propose a hybrid key management architecture for robust SCADA systems which supports replace protocol for availability and reduces the number of keys to be stored in a master terminal unit.

Keywords: SCADA systems, power system security, key management, cryptography, protocol

Full Text () Retrieve PDF document (201303_06.pdf)

Received January 22, 2011; revised August 22, 2011; accepted November 11, 2011.
Communicated by Chin-Laung Lei.
+ Corresponding author: Seungjoo Kim.
* This research was supported by Defense Acquisition Program Administration and Agency for Defense Development under the contract UD100002KD and by the MKE (The Ministry of Knowledge Economy), Korea, under the ITRC (Information Technology Research Center) support program (NIPA-2012-H0301-12-3007) supervised by the NIPA (National IT Industry Promotion Agency).