Year: 2023
Type: article
Abstract: In this paper, we present the design, implementation, and analysis of DNS over CoAP~(DoC), a new proposal for secure and privacy-friendly name resolution of constrained IoT devices. We implement different design choices of DoC in RIOT, an open-source operating system for the IoT, evaluate performance measures in a testbed, compare with DNS over UDP and DNS over DTLS, and validate our protocol design based on empirical DNS IoT data. Our findings indicate that plain DoC is on par with common DNS solutions for the constrained IoT but significantly outperforms when additional standard features of CoAP are used such as caching. With OSCORE, we can save more than 10 kBytes of code memory compared to DTLS, when a CoAP application is already present, and retain the end-to-end trust chain with intermediate proxies, while leveraging features such as group communication or encrypted en-route caching. We also discuss a compression scheme for very restricted links that reduces data by up to 70%.
DOI: 10.1145/3609423
Language: English
Topic: IoT and Edge/Fog Computing
Subfield: Computer Networks and Communications
Field: Computer Science
Domain: Physical Sciences
Open Access status: bronze
Awards: Verbundprojekt: Privacy-Integrated design and Validation in the constrained IoT - PIVOT -, Teilvorhaben: Entwurf und Validierung von integrierter Privatsphäre im eingebetteten IoT. Sichere Netzwerkkommunikation, Verbundprojekt: Privacy-Integrated design and Validation in the constrained IoT - PIVOT -, Teilvorhaben: Eingebettete Sicherheit für Inhaltsobjekte
OpenAlex ID: W4385439502