Abstract
While there is a rapid growth of wireless sensor networks mustered in different areas such as military, agriculture, weather forecasting etc., an equal attention has also been paid on their security concern. A dangerous attack against these networks is Sybil attack in which one malicious node creates and propagates multiple fake identifiers. This attack mainly influences routing protocols and operations such as voting, data aggregation and reputation evaluation. In this paper we propose a distributed and efficient algorithm based on broadcasting two-hop messages to detect Sybil nodes in wireless sensor networks. In the proposed algorithm, by sending two-hop messages, each node finds its two-hop neighbors and the common neighbors between itself and each of its two-hop neighbors. The number of common neighbors is a good indicator to detect Sybil nodes. Experimental results show that the proposed algorithm outperforms similar existing algorithms with respect to true and false detection rates.
Highlights
Wireless sensor networks are a kind of ad hoc wireless networks, which have many usages in military, a griculture, health care, weather forecasting and so on
Detecting Sybil Nodes in Wireless Sensor Networks using Two-hop Messages radio signals are prone to be interfered with environment and, as a result, may affect accuracy of such algorithms
In order to evaluate the efficiency of proposed algorithm, some experiment were performed, result of which were compared with similar algorithms . 10,12,14,15,17–20 Evaluation metrics are true and false detection rates
Summary
Wireless sensor networks are a kind of ad hoc wireless networks, which have many usages in military, a griculture, health care, weather forecasting and so on. The enemy forges fake identifiers or duplicates existing nodes identifiers in different area of the network In this way, malicious node attracts a heavy traffic and considerably disrupts routing protocols. Among solutions proposed for this attack is an algorithm based on radio source testing technique in which each node assigns an independent signaling channel to each of its neighbors[7]. In that research, another technique based on voting and registering nodes identifiers has been proposed to detect Sybil nodes. Detecting Sybil Nodes in Wireless Sensor Networks using Two-hop Messages radio signals are prone to be interfered with environment and, as a result, may affect accuracy of such algorithms.
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