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Temporary Identification Management System Using UNIX Time for IoT Device Privacy Protection

Authors:
Koki Mizoguchi
Somchart Fugkeaw
Masahito Kumazaki
Hirokazu Hasewaga
Hiroki Takakura

Keywords: Device Identifier; Privacy; ID anonymization; UNIX time.

Abstract:
With the rapid growth of Internet of Things (IoT) devices, privacy concerns regarding device identifiers have become increasingly significant. Authentication and Key Exchange (AKE) protocols are essential for securing IoT environments, but many implementations transmit device identifiers in plaintext or hashed form, which can lead to privacy issues for device users. On the other hand, session-based ID anonymization systems, which change device identifiers every time authentication occurs, require reading and writing on Non-Volatile Memory (NVM), such as flash memory, which consumes more energy and has limited write endurance. This paper proposes a novel ID management system for generating temporary device identifiers using UNIX time, which does not require reading and writing on NVM. The system is considered a communication and update process that is delay resilient. The effectiveness of the proposed system is also demonstrated in terms of computational and communication costs compared to three baseline systems. The proposed system is concluded to be one of the effective solutions for protecting the privacy of resource-constrained IoT devices and their users.

Pages: 37 to 42

Copyright: Copyright (c) The Government of Koki Mizoguchi, 2025. Used by permission to IARIA.

Publication date: September 28, 2025

Published in: conference

ISSN: 2519-8599

ISBN: 978-1-68558-295-1

Location: Lisbon, Portugal

Dates: from September 28, 2025 to October 2, 2025