Secure Localization and Key Distribution in Wireless Sensor Network

Secure localization of unknown nodes in a Wireless Sensor Network (WSN) is an important task for many applications. The crucial problem in Wireless Sensor Networks (WSNs) is position estimation due to their dynamic method of deployment. There are several methods in determining their physical locations but the greatest challenge imposed is communicating with authenticated neighbors in a secured manner. The mutual authentication between sensor nodes is of great importance i.e. node should only accept and forward their own precise location messages from authenticated neighbors. When WSNs are deployed in hostile environments, many attacks happen, e.g., wormhole, sinkhole, Sybil etc,. The attackers may disguise as normal node and attack the unknown nodes to interfere with localization process. They may forge, modify or replay localization information to make the estimated positions incorrect. The objective of this paper is to solve the problem of insecurity in localization of sensor nodes. Hence to provide security to localized coordinates during coordinate exchange security has been provided through Elliptic curve cryptography (ECC) to solve this issue. In this paper common attacks against localization and their security measures for secure transmission of localized coordinates.

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