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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
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Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Enhanced DTLS Support for the Contiki-NG OSKalnins, Rudolfs Arvids, Kalnins, Kristaps Karlis January 2021 (has links)
Internet of Things (IoT) devices are devices with embedded sensors or software. Their usage is becoming more prevalent. They are used for smart homes, traffic tracking, weather data and sensor networks. Often IoT devices communicate wirelessly using low-power protocols. A wireless connection provides an easy way to eavesdrop on personal data or even hijack connections. Thus security measures need to be taken. Our thesis looks at a specific IoT operating system, Contiki-NG, and describes the porting process of a Transportation Layer Protocol (TLS) protocol library, MbedTLS. The porting process consists of specific modules that need to be adapted to the Contiki-NG environment. After porting, example programs that send and receive datawere written to enable performance testing that includes execution time, runtime memory usage and code space. The results of the tests were analyzed and evaluated. The produced implementation from porting MbedTLS to Contiki-NG provides a secure connection between two hosts running the TLS protocol. The highly configurable nature of MbedTLS allows the implementation to be adapted to comply to the resource constraints of platforms supported by Contiki-NG. / Internet of Things (IoT)-enheter är enheter med inbyggda sensorer eller mjukvara. Deras användning blir allt vanligare. De används för smarta hem, trafikspårning, väderdata och sensornätverk. Ofta kommunicerar IoT-enheter trådlöst med protokoll med låg energiförbrukning. En trådlös anslutning ger ett enkelt sätt att avlyssna personuppgifter eller till och med att kapa anslutningar. Därför måste säkerhetsåtgärder vidtas. Vårt examensarbete täcker ett specifikt IoT-operativsystem Contiki-NG och beskriver en portningsprocess av ett TLS-protokollbibliotek (Transportation Layer Protocol), MbedTLS. Portningen består av specifika moduler som behöver anpassas till den ursprungliga Contiki-NG-miljön. Efter portningen skrevs exempelprogram som skickar och tar emot data för att möjliggöra prestandatestning som inkluderar exekveringstid, minnesanvändning och kodutrymme. Resultaten av testerna analyserades och utvärderades. Den framställda implementeringen från att överföra MbedTLS till Contiki- NG gav en säker anslutning mellan de två ändpunkterna som kommunicerar med TLS-protokollet. Den i hög grad konfigurerbara karaktären hos MbedTLS gjorde det möjligt att anpassa implementeringen för att följa resursbegränsningarna för plattformar som stöds av Contiki-NG.
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IMPLEMENTING NETCONF AND YANG ON CUSTOM EMBEDDED SYSTEMSGeorges, Krister, Jahnstedt, Per January 2023 (has links)
Simple Network Management Protocol (SNMP) has been the traditional approach for configuring and monitoring network devices, but its limitations in security and automation have driven the exploration of alternative solutions. The Network Configuration Protocol (NETCONF) and Yet Another Next Generation (YANG) data modeling language significantly improve security and automation capabilities. This thesis aims to investigate the feasibility of implementing a NETCONF server on the Anybus CompactCom (ABCC) Industrial Internet of Things (IIoT) Security module, an embedded device with limited processing power and memory, running on a custom operating system, and using open source projects with MbedTLS as the cryptographic primitive library. The project will assess implementing a YANG model to describe the ABCC’s configurable interface, connecting with a NETCONF client to exchange capabilities, monitoring specific attributes or interfaces on the device, and invoking remote procedure call (RPC) commands to configure the ABCC settings. The goal is to provide a proof of concept and contribute to the growing trend of adopting NETCONF and YANG in the industry, particularly for the Industrial Internet of Things (IIoT) platform of Hardware Meets Software (HMS).
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