TO ASCERTAIN IF BLOCKCHAIN CAN FACILITATE THE INTERNET OF THINGS SECURITY AND SCALABILITY REQUIREMENTS.

Several consensus algorithms have been proposed as a way of resolving the Byzantine General problem with respect to blockchain consensus process. However, when these consensus algorithms are applied to a distributed, asynchronous network some suffer with security and/or scalability issues, while others suffer with liveness and/or safety issues. This is because the majority of research have not considered the importance of liveness and safety, with respect to the integrity of the consensus decision. In this paper a novel solution to this challenge is presented. A solution that protects blockchain transactions from fraudulent and/or erroneous mis-spends and mistakes. This consensus protocol uses a combination of probabilistic randomness, an isomorphic balance authentication method, error detection and synchronised time restrictions, when assessing the authenticity and validity of IoT requests. Designed to operate in a distributed asynchronous network, this approach increases scalability while maintaining a high transactional throughput, even when faced with Byzantine failure.

针对区块链共识流程中的拜占庭将军问题（Byzantine General Problem），已有多种共识算法被提出作为解决方案。然而，将这些共识算法应用于分布式异步网络时，部分算法存在安全性与可扩展性方面的缺陷，其余算法则面临活性（liveness）与安全性（safety）层面的问题。究其原因，现有多数研究未结合共识决策的完整性要求，充分考量活性与安全性的重要性。为此，本文提出一种针对该挑战的创新性解决方案，该方案可保护区块链交易免遭欺诈性与错误性的误支及失误影响。该共识协议在评估物联网（IoT, Internet of Things）请求的真实性与有效性时，融合了概率随机性、同构余额认证方法、错误检测机制与同步时间限制策略。该方案专为分布式异步网络设计，即便遭遇拜占庭故障（Byzantine failure），仍可在提升可扩展性的同时维持较高的交易吞吐量。