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Secure Dynamic Access Control Mechanism for Shared Wireless Sensor Networks

Authors:
Nelka Perera
Kasun Zoysa
Jeevani Goonathillake
Asanka Sayakkara

Keywords: Shared wireless sensor networks; user access control; public key cryptography; symmetric cryptography

Abstract:
Researchers and organizations from various disciplines are interested in using Wireless Sensor Network (WSN) for their research and applications. However, deploying a sensor network of their own is a difficult task for these communities due to high deployment and maintenance cost. Therefore, the concept of Shared Wireless Sensor Network (SWSN) with multiple base stations is getting popular among these communities. Nevertheless, providing shared access for WSN has given rise to different set of problems such as handling dynamic nature of user privileges, attacks from forged base stations and malicious users. In this paper, we propose a mechanism that can overcome challenges and problems related to access controlling in a SWSN. It uses both symmetric and public key cryptography with an effective key management scheme to ensure the security of the system. Although enforcing this mechanism on a SWSN consumes some energy for communication and processing at the node, it decreases energy for sensing as nodes execute only the queries of authorized users. Since proposed access control scheme is deployed at the node level, each node processes access control individually. Consequently, failure of a node does not cause impact on total access controlling process. We implemented and evaluated this access control mechanism as an enhancement to the TikiriDB data abstraction layer which runs on Contiki development environment.

Pages: 74 to 80

Copyright: Copyright (c) IARIA, 2015

Publication date: November 15, 2015

Published in: conference

ISSN: 2163-9027

ISBN: 978-1-61208-439-8

Location: Barcelona, Spain

Dates: from November 15, 2015 to November 20, 2015