Efficient and Secure Group Key Management in IoT using Multistage Interconnected PUF
This addresses security and energy efficiency problems for IoT applications in privacy-sensitive environments, representing a domain-specific incremental improvement.
The paper tackles secure group communication in energy-constrained IoT devices by proposing a group key management scheme based on a novel multistage interconnected PUF design, achieving a 47.33% global energy saving compared to state-of-the-art ECC-based schemes.
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.