Efficient key revocation in WSN with lattice-based cryptography

Abstract

Strong security is crucial as Wireless Sensor Network (WSN) become more common. Dynamic Lattice-Based Key Revocation (DLBKR) is a novel method for improving key revocation in WSN. Lattice-based cryptography helps DLBKR overcome compromised keys and evolving security threats in dynamic sensor networks. Key revocation mechanisms are examined in detail, with a focus on their limitations in WSN. Due to these networks limited resources and ever-changing structure, we propose DLBKR as a novel way to minimize the security risks of compromised keys. DLBKR is featured as a flexible and reactive solution due to its ability to adapt to threat levels. Simulated network sizes from 250 to 2000 nodes were used to evaluate DLBKR. Traditional methods like CRL and OCSP were compared. Latency, revocation efficiency, computational overhead, communication overhead, and key replacement delay were assessed. DLBKR outperforms CRL and OCSP in all parameters, proving its efficiency in dynamic and resource-limited WSN key revocation. This method performs well and offers a flexible framework that incorporates with sensor networks. The DLBKR method help WSN to manage key complexity.