Publicação
Web3 Ecosystem for Device as a Service
| datacite.subject.fos | Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática | |
| dc.contributor.advisor | Pinto, António Alberto dos Santos | |
| dc.contributor.author | Tavares, Maria Da Conceição Pereira | |
| dc.date.accessioned | 2025-11-10T17:29:00Z | |
| dc.date.available | 2025-11-10T17:29:00Z | |
| dc.date.issued | 2025 | |
| dc.date.submitted | 2025 | |
| dc.description.abstract | The management of distributed physical devices, especially in large-scale scenarios such as governmental digital inclusion initiatives, poses challenges related to security, control, and transparency. The management of the device lifecycle in unsupervised environments is exacerbated by concerns such as theft, loss, mistreatment, and lack of trustworthy processes for transparency and remote monitoring. This dissertation presents a novel blockchain-based Device as a Service (DaaS) system that combines smart contracts, a web portal for legitimate users, and an embedded verification module at the United Extensible Firmware Interface (UEFI). The architecture ensures decentralised, transparent, and tamper-resistant device management, allowing remote locking and unlocking, real-time state verification, and immutable activity recording without the need for intermediaries. Implemented on the Ethereum blockchain (Sepolia testnet), the system uses smart contracts written in Solidity for device registration and state management, Keyed-Hash Message Authentication Code (HMAC)-based cryptographic tokens to ensure data integrity, and Role Based Access Control (RBAC) to restrict actions to legitimate entities. A hardware-level security layer is supplied by a customised UEFI module, that validates device status updates before the Operating System (OS) boots. The functionality, security, and scalability of the system are demonstrated by validation in realistic scenarios, such as device registration, access control processes, and audit logs. This evaluation proves the solution’s ability to securely automate remote device management while providing transparency and resistance against attacks such as replay attacks. The present study addresses the gaps presented in current remote management strategies by offering a comprehensive and novel system for decentralised device management that can be applied in business, government, and educational environments. The work received recognition with a Best Paper Award, highlighting its scientific value and practical application. | por |
| dc.identifier.tid | 204044839 | |
| dc.identifier.uri | http://hdl.handle.net/10400.22/30801 | |
| dc.language.iso | eng | |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
| dc.subject | Device as a Service (DaaS) | |
| dc.subject | Smart Contracts | |
| dc.subject | Blockchain | |
| dc.subject | Remote Device Management | |
| dc.title | Web3 Ecosystem for Device as a Service | por |
| dc.type | master thesis | |
| dspace.entity.type | Publication | |
| thesis.degree.name | Mestrado em Engenharia Informática |