BLOCKCHAIN-BASED ACCESS AND USAGE CONTROL OF CLOUD-BASED DIGITAL TWINS

This article introduces a novel data-feeding system that integrates Ethereum blockchain, smart contracts, and Chainlink, aiming to efficiently acquire, back up, and utilize digital twin resources. In the Internet of Things (IoT) realm, digital twin resources have been extensively adopted. However, precise data sharing and data privacy management remain pivotal challenges. Through the techniques presented in this paper, we offer a decentralized and secure method for data acquisition, accompanied by a comprehensive access control system to ensure data security. Our system employs Ethereum smart contracts to clearly stipulate the rules and conditions for accessing digital twin resources. Furthermore, by incorporating Chainlink technology, we have developed specialized external connectors, enabling smart contracts to pull Off-chain data from the digital twin cloud platform directly. All access controls and operations are logged on the Ethereum blockchain, ensuring historical security and traceability. Our experiments validate the efficacy of our approach, confirming that the system can stably acquire, back up, and utilize digital twin resource data. The findings indicate that this method provides a reliable and scalable data management and control solution in IoT contexts. In conclusion, by merging blockchain, smart contract, and Chainlink technologies, we present an innovative and promising strategy for acquiring, backing, utilizing, and securing IoT resources.

Name thesis:degree_name

Master of Science (M.Sc.)

Level thesis:degree_level

Masters

Discipline thesis:degree_discipline

Computer Science

Grantor

University of Saskatchewan

Year dc:date.issued

2023

Author dc:creator

• He, Yongchang

Advisor dc:contributor.advisor

• Deters, Ralph

Committee members dc:contributor.committeemember

• Vassileva, Julita
• Chen, Li

• Blockchain
• Digital Twin

Language dc:language.iso

en

Handle dc:identifier.uri

https://hdl.handle.net/10388/15272

OAI identifier oai:identifier

oai:harvest.usask.ca:10388/15272