15123

13601

كارشناسي ارشد

نرم افزار

اصفهان : دانشگاه صنعتي اصفهان

1398

سيزده، 83 ص. : مصور، جدول، نمودار

علي فانيان

فرامرز هندسي، محمدرضا حيدرپور

1398/07/09

كتابنامه

كامپيوتر

مهندسي برق و كامپيوتر

1398/07/09

2565158

A Trust and Reputation System for IoT Exploiting Distributed Ledger Technology Seyed Amid Moeinzadeh Mirhosseini a moeinzadeh@ec iut ac ir 2018 Department of Electrical and Computer Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor Dr Ali Fanian a fanian@cc iut ac ir Abstract Internet of Things IoT is a revolutionary technology which will encompass all the aspects of our lives Its effectcan be seen in the kitchens and appliance to the industrial infrastructures and manufactures Todays IoT hasn t reached itstrue potentials Leaving all the benefits aside there are many serious concerns which should be dealt with before the fulladoption of the technology Finding an honest service provider or a merchant among a crowd is not an easy task to handle Furthermore it may sound impossible to find one in the presence of fraudulent users who invariably try to double cross themechanism to gain benefits Trust and Reputation Systems TRS have been around for decades and are helpful to evaluatethe trustworthiness of an entity based on its past behavior Therefore IoT nodes which utilize such a system can avoid haz ardous trades Conventional online TRSs are based on the central architecture which have some defects like being the singlepoint of failure On the other hand previous decentralized alternatives may not do their tasks in the presence of an adver sary One of IoTs potentials is Sensing as a Service With the advent of blockchain and distributed ledgers technology wecan take a step further in decentralizing what we previously thought was impossible Distributed ledger based TRSs havethe advantages of decentralized ones and robustness of centralized models In this thesis a new distributed ledger usingblockchain and Tangle have been introduced A blockchain has been put in conjunction with Tangle for further robustnessand security of the system The designed TRS will sit on top of the aforementioned ledger The results show the proposedsystem is well suited for IoT devices and it considers IoT constraints The system performs robustly in the presence ofadversarial activities Keywords Blockchain Distributed Ledger Trust and Reputation System TRS IoT Internet of Things Distributed System

علي فانيان

فرامرز هندسي، محمدرضا حيدرپور