Cryptography and Key Management Schemes for Wireless Sensor Networks

TL;DR

This paper surveys cryptographic mechanisms and key management schemes for wireless sensor networks, highlighting the challenges of balancing security with resource constraints in these critical, large-scale systems.

Contribution

It provides a comprehensive overview of existing cryptographic and key management approaches tailored for resource-limited wireless sensor networks.

Findings

Analyzes symmetric and asymmetric key schemes in WSNs

Identifies security vulnerabilities in resource-constrained environments

Summarizes key management challenges and solutions

Abstract

Wireless sensor networks (WSNs) are made up of a large number of tiny sensors, which can sense, analyze, and communicate information about the outside world. These networks play a significant role in a broad range of fields, from crucial military surveillance applications to monitoring building security. Key management in WSNs is a critical task. While the security and integrity of messages communicated through these networks and the authenticity of the nodes are dependent on the robustness of the key management schemes, designing an efficient key generation, distribution, and revocation scheme is quite challenging. While resource-constrained sensor nodes should not be exposed to computationally demanding asymmetric key algorithms, the use of symmetric key-based systems leaves the entire network vulnerable to several attacks. This chapter provides a comprehensive survey of several well-known cryptographic mechanisms and key management schemes for WSNs.