Abstract
The node replication attack is one of the notorious attacks that can be easily launched by adversaries in wireless sensor networks. A lot of literatures have studied mitigating the node replication attack in static wireless sensor networks. However, it is more difficult to detect the replicas in mobile sensor networks because of their node mobility. Considering the limitations of centralized detection schemes for static wireless sensor networks, a few distributed solutions have been recently proposed. Some existing schemes identified replicated attacks by sensing mobile nodes with identical ID but different locations. To facilitate the discovery of contradictory conflicts, we propose a hybrid local and global detection method. The local detection is performed in a local area smaller than the whole deployed area to improve the meeting probability of contradictory nodes, while the distant replicated nodes in larger area can also be efficiently detected by the global detection. The complementary two levels of detection achieve quick discovery by searching of the replicas with reasonable overhead.
Highlights
Wireless sensor networks (WSNs) typically consist of large numbers of sensing devices to collect information in a monitored field
As WSNs could be deployed in hostile environments, the networks can be unsupervised and the node hardware is generally not tamper-resistant; kinds of notorious attacks would be suffered
An application-independent intrusion known as the node replication/clone attack, works by replicating or cloning nodes with the copied node ID and all cryptographic materials associated with that ID
Summary
Wireless sensor networks (WSNs) typically consist of large numbers of sensing devices to collect information in a monitored field. The problem of node replica detection in static networks has been extensively studied [1,2,3,4,5], only a few schemes have been proposed for mobile sensor networks [6,7,8,9]. While the clone detection problem has been recently addressed for mobile sensor networks, the problem is still open when some particular mobile WSN is considered The common idea, such as the schemes in [8, 9], is based on the meetings of a witness node with more than one of the replicated nodes or their neighbors.
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