The novel Proof of Efficiency (PoEf) Consensus Mechanism: improved efficiency and cybersecurity for Blockchain-based Supply Chain Management Systems.

Haughton, Odayne (2024) The novel Proof of Efficiency (PoEf) Consensus Mechanism: improved efficiency and cybersecurity for Blockchain-based Supply Chain Management Systems. Doctoral thesis, University of Wales Trinity Saint David.

Text HaughtonO_ PhD_Thesis.pdf - Accepted Version Available under License CC-BY-NC-ND Creative Commons Attribution Non-commercial No Derivatives. Download (21MB)

Abstract

The rapid growth of blockchain technology in Supply Chain Management (SCM) since 2016 has highlighted the need for faster, more reliable, and transparent data exchanges. However, current blockchain consensus mechanisms struggle to meet the efficiency and scalability requirements of modern SCM systems while remaining vulnerable to attacks. This thesis explores the optimisation of consensus mechanisms, particularly focusing on improving scalability, security, and performance. The research makes three key contributions. First, a Systematic Literature Review (SLR) of 108 peer-reviewed articles was conducted, identifying major blockchain vulnerabilities in consensus mechanisms, smart contracts, network-level attacks, and cryptographic challenges. Second, the thesis introduces the novel Proof of Efficiency (PoEf) consensus mechanism, an improvement over the traditional Practical Byzantine Fault Tolerance (PBFT) system. PoEf integrates sharding and a reputation-level score to enhance scalability and security. This mechanism dynamically adjusts the reputation of nodes based on their performance, ensuring high throughput, low latency, and scalability. Simulation results using BlockSim confirm that PoEf delivers higher throughput, lower latency, and greater scalability, making it more suitable for supply chain operations. Third, a Decision Matrix compares the performance and security of various consensus mechanisms, offering guidance for selecting the best fit for specific SCM requirements. Overall, PoEf represents a significant advancement in blockchain consensus mechanisms, demonstrating its potential to improve performance and handle large-scale SCM operations efficiently.

Item Type:	Thesis (Doctoral)
Subjects:	T Technology > T Technology (General)
Divisions:	Theses and Dissertations > Doctoral Theses
Depositing User:	Odayne Haughton
Date Deposited:	28 Jan 2025 15:22
Last Modified:	28 Jan 2025 15:22
URI:	https://repository.uwtsd.ac.uk/id/eprint/3356

Administrator Actions (login required)

Edit Item - Repository Staff Only