Three-dimensional Key Distribution Scheme in Wireless Sensor Networks

Abstract

One of the major security challenges faced by wireless sensor networks(WSNs) is establishing a secure link for communication between neighboring sensor nodes. Finding a balance between connection, overhead, and resilience against node capture attacks is difficult due to the resource limits of sensor nodes. We propose a new three-dimensional key distribution scheme for wireless sensor networks based on polynomial and random key distribution schemes. The key pool is divided into two sections in the proposed scheme: key pool 1 is generated by the polynomial pool, and key pool 2 is generated by key pool 1. A three-dimensional key distribution model is constructed using the key pool and the coefficients of the polynomials. It can enhance network resilience while maintaining good connectivity by dynamically adjusting the degree of polynomials and the size of the polynomial pool. This paper analyzes the performance of the proposed scheme and compares it with other schemes. The results show that the proposed scheme has better local connectivity and resilience against node capture attacks when compared with the previous schemes.