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Beschreibung:
We propose a secure localization scheme for sensor networks based on the received signal strength (RSS) ranging techniques. Our scheme enables the network authority to obtain locations of sensor nodes in the presence of an attacker. The proposed scheme uses a small number of anchor nodes with known locations that provide points of reference from which the sensors’ locations are computed. This scheme makes use of robust localization and time synchronization primitives which, appropriately combined, enable the detection of attacks on localization, within a realistic attacker model. We perform an in-depth security analysis of our scheme and we demonstrate its feasibility on Mica2 sensor platform.