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- Title
Automatic Key Update Mechanism for Lightweight M2M Communication and Enhancement of IoT Security: A Case Study of CoAP Using Libcoap Library †.
- Authors
Tsai, Wen-Chung; Tsai, Tzu-Hsuan; Wang, Te-Jen; Chiang, Mao-Lun
- Abstract
The ecosystem for an Internet of Things (IoT) generally comprises endpoint clients, network devices, and cloud servers. Thus, data transfers within the network present multiple security concerns. The recent boom in IoT applications has accelerated the need for a network infrastructure that provides timely and safe information exchange services. A shortcoming of many existing networks is the use of static key authentication. To enable the use of automatic key update mechanisms in IoT devices and enhance security in lightweight machine-to-machine (M2M) communications, we propose a key update mechanism, namely, double OTP (D-OTP), which combines both one-time password (OTP) and one-time pad to achieve an IoT ecosystem with theoretically unbreakable security. The proposed D-OTP was implemented into the Constrained Application Protocol (CoAP) through the commonly used libcoap library. The experimental results revealed that an additional 8.93% latency overhead was required to obtain an unbreakable guarantee of data transfers in 100 CoAP communication sessions.
- Subjects
MACHINE-to-machine communications; INTERNET of things; COMMUNICATION infrastructure; BLOCK ciphers; INFORMATION sharing; INFORMATION services; SECURITY management
- Publication
Sensors (14248220), 2022, Vol 22, Issue 1, p340
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s22010340