Access Control for Distributed Ledgers in the Internet of Things: A Networking Approach

【Author】 Cullen, Andrew; Ferraro, Pietro; Sanders, William; Vigneri, Luigi; Shorten, Robert

【Source】IEEE INTERNET OF THINGS JOURNAL

【影响因子】10.238

【Abstract】In the Internet of Things (IoT) domain, devices need a platform to transact seamlessly without a trusted intermediary. Although distributed ledger technologies (DLTs) could provide such a platform, blockchains, such as Bitcoin, were not designed with IoT networks in mind, hence are often unsuitable for such applications: they offer poor transaction throughput and confirmation times, put stress on constrained computing and storage resources, and require high transaction fees. In this article, we consider a class of IoT-friendly DLTs based on directed acyclic graphs, rather than a blockchain, and with a reputation system in the place of Proof of Work (PoW). However, without PoW, the implementation of these DLTs requires an access control algorithm to manage the rate at which nodes can add new transactions to the ledger. We model the access control problem and present an algorithm that is fair, efficient, and secure. Our algorithm represents a new design paradigm for DLTs in which concepts from networking are applied to the DLT setting for the first time. For example, our algorithm uses distributed rate setting, which is similar in nature to transmission control used in the Internet. However, our solution features novel adaptations to cope with the adversarial environment of DLTs in which no individual agent can be trusted. Our algorithm guarantees utilization of resources, consistency, fairness, and resilience against attackers. All of these are achieved efficiently and with regard for the limitations of IoT devices. We perform extensive simulations to validate these claims.

【Keywords】Access control; Peer-to-peer computing; Blockchain; Distributed ledger; Internet of Things; Throughput; Quality of service; Distributed ledger technology; efficient communications and networking; network architecture; security and privacy

【发表时间】2022 FEB 1

【收录时间】2022-02-05

【文献类型】期刊

【主题类别】

区块链技术--