Network packet

Transport Layer Security

Embedded system

Computer security

Encryption

User Datagram Protocol

Operating system

The Internet

Datagram

Computer science

Protocol (science)

Internet protocol suite

Computer network

Alternative medicine

Internet of Things

Asynchronous communication

Handshake

Cryptographic protocol

Authentication protocol

Cryptography

Medicine

Authentication (law)

Pathology

Conventional cryptographic solutions to the security are expensive in terms of computing resources (memory and processing capacity) and power consumption. They are not suitable for the Internet of Things devices that have constrained resources. In this regard, physically unclonable functions (PUFs) have become an increasingly popular technology for building secure authentication in these systems. In this paper, we propose lightweight PUF-based authentication protocol. This was implemented on a wireless sensor network constructed using the resource-limited IoT devices: Zolertia Zoul re-mote. The functionality of the proposed scheme was verified using a server-client configuration. Then power consumption and memory utilisation of the proposed protocol were estimated and compared with the existing solutions, namely: DTLS (datagram transport layer security) handshake protocol and UDP (user datagram protocol). Our results indicate that the proposed PUF based authentication saves up to 45% power and uses 12% less memory compared to DTLS handshake authentication.

Lightweight PUF-Based Authentication Protocol for IoT Devices