20.500.12556/RUL-142643 Arhitektura in izvedba bločne verige za računsko šibka okolja Blockchain architecture and implementation for computationally weak environments Tehnologija veriženja blokov omogoča, da na varen, transparenten in preverljiv način shranjujemo podatke v tako imenovane bloke, ki se z uporabo kriptografije med sabo kronološko povežejo v verigo. Podatki se hranijo v mreži osebnih računalnikov, kar pomeni, da so decentralizirani in razpršeni. Glavna lastnost tehnologije bločnih verig je, da si nihče ne more lastiti sistema in ga lahko zato uporablja in soupravlja vsak. Za zagotavljanje pravilnosti podatkov oz. transakcij in doseganje decentraliziranega konsenza se uporabljajo različni mehanizmi, ki velikokrat zahtevajo veliko računskih virov, katerih v določenih okoljih z veliko potenciala in uporabnosti, kot so internet stvari (IoT) in pametni telefoni, ne moremo zagotoviti. V tem delu raziščemo možnosti uporabe tehnologije veriženja blokov (in porazdeljenih beležnic na splošno, angl. distributed ledgers) v računsko šibkih okoljih, pregledamo obstoječe rešitve in pristope ter jih med sabo primerjamo. Glede na rezultate izberemo najbolj primeren pristop, ga podrobno analiziramo in opišemo. Na osnovi tega pripravimo omrežje, katerega sestavljajo računsko šibke naprave (Raspberry PI) in prototip aplikacije, ki s tem omrežjem komunicira in dodaja podatke v bločno verigo. Blockchain technology allows us to store data in a secure, transparent, and verifiable manner in so-called blocks, which are chronologically linked to each other in a chain using cryptography. The data is stored in a network of computers, which is decentralized and distributed. The main feature of blockchain technology is that no one can take over the ownership of the system, while anyone can use and co-manage it. To ensure correctness of data or transactions and achieve decentralized consensus, various mechanisms are used, which often require a lot of computing resources, which we cannot provide in certain environments, such as Internet of Things (IoT) and smartphones. In this work, we explore the possibilities of using blockchain technology (and distributed ledgers in general) in computationally weak environments, review existing solutions and approaches, and compare them with each other. Based on the results, we choose the most appropriate approach and analyze and describe it in detail. Based on this, we setup and evaluate a network consisting of computationally weak devices (Raspberry PI) and a prototype application that communicates with this network and adds data to the blockchain. bločna veriga IoT protokoli konsenza IOTA porazdeljena beležnica blockchain IoT consensus protocols IOTA distributed ledger true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2022-11-17 13:15:00 2022-11-17 13:15:07 2022-11-30 06:14:57 0000-00-00 00:00:00 2022 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 33921 131582211 Komic_Armin_-_Arhitektura_in_izvedba_blocne_verige_za_racunsko_sibka_okolja.pdf Komic_Armin_-_Arhitektura_in_izvedba_blocne_verige_za_racunsko_sibka_okolja.pdf 1 8E9E3FD62D5A90F0F3ABE3A39E5C7CAE ee8d75fec04ee9add6cd08022a643f58044d3ee70b500b5918bc21e714f657c4 5b99c7ec-6671-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=164088 Fakulteta za računalništvo in informatiko 0 0 0