Lightweight and Energy-Efficient Implementation of an Unclonable WSN Nodes on PSoC

Abstract

An adversary can easily capture a wireless sensor network (WSN) node and extract the security information stored in the node, including keys, shared secrets and so on. Due the resources limitation, the traditional encryption and authentication protocols are impractical on WSN nodes. In this letter, we proposed a lightweight and energy-efficient anti-clone design for the WSN nodes, in which physical unclonable function (PUF) is adopted to enhance the security of the WSN nodes. The new structure aims at achieving a low cost and low energy method to prevent the node to be captured and cloned by the adversary. Unclonable WSN nodes are implemented on cypress PSOC 4, in which a configurable PUF structure is accomplished by use the universal digital block. Experimental results show that the proposed system can prevent the capture and clone attack in wireless sensor network, which is unavailable in previous WSN nodes.