Using blockchain for registration and control of IoT devices

IoT se suočava sa problemom identiteta, sigurnosti i interoperabilnosti. Trenutni sustavi oslanjaju se na centralizirani klijent-server model koji uskoro neće biti zadovoljavajući zbog naglog porasta broja uredaja spojenih na Internet. Blockchain je dijeljena, distribuirana i decentralizirana baza koja omogućuje razvoj decentraliziranih aplikacija. Ovaj rad ispituje koncept njegove upotrebe za registraciju i upravljanje IoT uredajima. Razvijen je sustav koji se sastoji od pametnog ugovora, web sučelja te uredaja i platforme. Korisnici sustava, entiteti, registriraju uredaje unutar pametnog ugovora sa njihovim kontrolnim informacijama putem web sučelja. Uređaji potpisuju poruke privatnim ključem koje šalju prema platformi zajedno sa kontrolnim informacijama i pripadajućim dokazom. Primljene poruke validiraju se koristeći blockchain, čime se na kraju dobiva autentifikacija, integritet i ne-odbacivanje.IoT is facing identity, security and interoperability problem. Current systems rely on centralized client-server model that will soon be unsatisfactory due to the rapid increase in the number of devices connected to the Internet. Blockchain is shared, distributed and decentralized ledger that allows development of decentralized applications. This thesis examines the concept of its use for registration and management of IoT devices. A system that consists of a smart contract, web interface, and device and platform has been developed. Systems users, entities, register devices within a smart contract with their control information via a web interface. Devices sign messages using private key which are sent to the platform along with control information and associated proof. Received messages are validated using blockchain, which at the end provides authentication, integrity and non-repudiation