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Web3 Ecosystem for Device as a Service
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| 3.32 MB | Adobe PDF |
Orientador(es)
Resumo(s)
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.
Descrição
Palavras-chave
Device as a Service (DaaS) Smart Contracts Blockchain Remote Device Management