The emergence of blockchain technology and cryptocurrencies opened the possibility for building novel peer-to-peer (P2P) resource allocation and sharing models. However, the trustless nature of these P2P models creates the need for reliable and effective trust and reputation mechanisms to minimize the risk of accessing or interacting with malicious peers. Blockchain technology, which is renowned for ensuring trust in trustless environments, provides us with new mechanisms to overcome the weaknesses of the existing reputation and trust management protocols. This paper proposes BTrust, an innovative decentralized and modular trust management system based on blockchain technology for evaluating trust in large-scale P2P networks. To quantify and assess the trustworthiness of peers and identify malicious peers, BTrust introduces a multi-dimensional trust and reputation model to represent trust and reputation scores in a single value derived from multiple parameters with appropriate weightings. Other contributions of this paper include the combination of recommendation and evidence-based approaches into a single system to provide a reliable and versatile way to compute trust in the network, an optimized trustless bootstrapping process to select trustworthy peers among neighbour peers and an incentive mechanism to encourage truthful feedback. We implement and evaluate the BTrust protocol using simulations and show that BTrust is highly resilient to failures and robust against malicious nodes.

Badr Bellaj

Aafaf Ouaddah

Emmanuel Bertin

Noel Crespi

Abdellatif Mezrioui

Khalid Bellaj

Journal of Network and Systems Management

JOURNAL OF NETWORK AND SYSTEMS MANAGEMENT，以同行评审的原创研究以及网络和系统管理领域的案例研究为特色。该杂志定期发布有关这些领域的电信和计算方面的重要新信息，以及它们的演变和新兴整合。这个杰出的季刊涵盖了与语音、数据、视频和网络计算的分布式系统和通信网络的操作、管理和控制相关的架构、分析、设计、软件、标准和迁移问题。

The Journal of Network and Systems Management is a peer-reviewed journal that features original research and case studies in the field of network and systems management. It regularly publishes significant new information regarding telecommunications and computing, as well as their evolution and emerging integrations. This distinguished quarterly covers issues related to the operation, management, and control of distributed systems and communication networks involving voice, data, video, and network computing, including architecture, analysis, design, software, standards, and migration.

《Journal of Network and Systems Management》是一本同行评审的期刊，专注于网络和系统管理领域的原创研究和案例研究。该期刊定期发布关于电信和计算领域的重要新信息，涵盖这些领域的演变和新兴整合。作为一本杰出的季刊，它涉及与语音、数据、视频和网络计算相关的分布式系统和通信网络的操作、管理和控制，包括架构、分析、设计、软件、标准和迁移等问题。

BTrust: A New Blockchain-Based Trust Management Protocol for Resource Sharing

BTrust is proposed, an innovative decentralized and modular trust management system based on blockchain technology for evaluating trust in large-scale P2P networks and is implemented and evaluated using simulations to show that BTrust is highly resilient to failures and robust against malicious nodes.

Category	Quartile
计算机科学	3
计算机科学, 计算机信息系统	3
计算机科学, 电信学	3

BTrust: A New Blockchain-Based Trust Management Protocol for Resource Sharing

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