Efficient and Secure Group Key Management in IoT using Multistage Interconnected PUF

TL;DR

This paper introduces a novel multistage interconnected PUF-based scheme for secure, energy-efficient group key management in IoT devices, addressing security and energy constraints.

Contribution

It proposes a new MIPUF design for secure group key management, improving energy efficiency and security over existing ECC-based methods.

Findings

Saves 47.33% energy compared to ECC-based schemes

Secure against multiple attack methods

Efficient key management in energy-constrained IoT devices

Abstract

Secure group-oriented communication is crucial to a wide range of applications in Internet of Things (IoT). Security problems related to group-oriented communications in IoT-based applications placed in a privacy-sensitive environment have become a major concern along with the development of the technology. Unfortunately, many IoT devices are designed to be portable and light-weight; thus, their functionalities, including security modules, are heavily constrained by the limited energy resources (e.g., battery capacity). To address these problems, we propose a group key management scheme based on a novel physically unclonable function (PUF) design: multistage interconnected PUF (MIPUF) to secure group communications in an energy-constrained environment. Our design is capable of performing key management tasks such as key distribution, key storage and rekeying securely and efficiently. We show that our design is secure against multiple attack methods and our experimental results show that our design saves 47.33% of energy globally comparing to state-of-the-art Elliptic-curve cryptography (ECC)-based key management scheme on average.