Attack-resilient time synchronization for wireless sensor networks

摘要: Abstract The existing time synchronization schemes in sensor networks were not designed with security mind, thus leaving them vulnerable to attacks. In this paper, we first identify various attacks that are effective several representative schemes, and then focus on a specific type of attack called delay , which cannot be addressed by cryptographic techniques. Next propose two approaches detect accommodate the attack. Our approach uses generalized extreme studentized deviate (GESD) algorithm multiple outliers introduced compromised nodes; our second threshold derived using transformation technique filter out outliers. Finally show effectiveness these through extensive simulations.