Improving performance of consensus protocol in blockchain applications using "proof of reputation" method

Layla Nadhim Naser; Behrouz Tousi; Mohammad Farhadi-Kangarlu

Author(s)

Layla Nadhim Naser Department of electrical and computer engineering, Urmia University, Urmia, Iran.

Behrouz Tousi Department of electrical and computer engineering, Urmia University, Urmia, Iran.

Mohammad Farhadi-Kangarlu Department of electrical and computer engineering, Urmia University, Urmia, Iran.

Abstract

Blockchain technology enables transactions among parties who might not completely trust one another. It employs consensus algorithms within its networks to guarantee dependability, despite some nodes being unreliable. Blockchain, a technology that provides a safe, immutable distributed ledger, has facilitated the development of solutions for trust issues in decentralized networks. While primarily recognized for its role in cryptocurrencies, blockchain's scope extends to protecting other elements, like reputations. However, the majority of existing studies on enhancing reputation systems via blockchain are limited to cryptocurrencies and are plagued by inefficiencies and high energy demands. We introduce a new reputation-based consensus method called "proof of reputation," which effectively upholds the reliability and integrity of transaction outputs. This method is utilized in permissioned blockchains that include a management layer for node access. Here, participants authenticate one another's credentials using asymmetric cryptography. This system, unlike Bitcoin's proof of work, is more economical by removing the need for mining and hash calculations in block validations. The encrypted nature of blockchain also enhances the security and trustworthiness of our approach. We have created a prototype, and our evaluations show that this protocol meets expected scalability, bandwidth, and throughput requirements of the reputation algorithm. In the future, we aim to expand our study to create an all-encompassing reputation-based framework that integrates access control, identity verification, and further security features.

Publication Details

Page(s) 1-19

DOI DOI not available

Published Journal: International Journal of Communication Networks and Information Security, Volume: 16, Issue: 5, Year: 2024

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Keywords

Blockchain, Reputation, asymmetric cryptography, permissioned blockchain, consensus protocol

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