Secure and Efficient Data Storage in Unattended Wireless Sensor Networks

Abstract

Abstract-Providing forward and backward secrecy is still a big challenge in Unattended Wireless Sensor Networks (UWSNs), though some storage schemes have been proposed. Additionally, high storage requirement needs efficient storage techniques. In this paper, we propose a novel homomorphic encryption and key-evolution based scheme for efficient and secure data storage, which supports both forward and backward secrecy in UWSNs. We show that the stored data based on our scheme can be used to efficiently compute statistic values, e.g., expected value and variance of the sensed data, and at the same time the storage cost is significantly reduced using our scheme. Detailed analysis has been conducted to evaluate the scheme in terms of efficiency and security.

Self-healing in unattended wireless sensor networks

“…This work was later extended [Di Pietro et al 2009a] to include the case where the adversary's goal is to indiscriminately erase all sensor data. The problem of data survivability in UWSN was also studied [Park and Shin 2005;Ruan et al 2010;Ren et al , 2009Vitali et al 2011]. Another recent result [Di Pietro et al 2009b] introduced simple cryptographic techniques for preventing the adversary from locating data that it aims to erase.…”