Lightweight Attestation Scheme for Wireless Sensor Network
Shinsaku Kiyomoto, Yutaka Miyake · International Journal of Security and Its Applications · 2014
Wireless sensor networks (WSNs) have been deployed for several applications that use M2M communications.Malicious code propagation is considered a serious threat on WSNs.In this paper, we considere a simple, distributed remote attestation method for a WSN that does not require secret information, precise timing measurement, or a tamper-resistant device.Each node holds a value for the attestation of other nodes, and sensor nodes check the validity of each other's data.A sensor node terminates itself to prevent propagation of malicious code, when the sensor node finds a unexpected changes in stored program and data.We analyzed the probability of success in protecting the WSN against malicious code under random network models.The analyses confirmed the feasibility of the attestation scheme and we obtained a fundamental approach to finding an appropriate frequency for attestation.