Secure Access Control for DAG-Based Distributed Ledgers

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

【Source】IEEE INTERNET OF THINGS JOURNAL

【影响因子】10.238

【Abstract】Access control is a fundamental component of the design of distributed ledgers, influencing many aspects of their functionality, such as fairness, efficiency, traditional notions of network security, and adversarial attacks such as Denial-of-Service (DoS) attacks.(1) In this work, we consider the security of a recently proposed access control protocol for directed acyclic graph-based distributed ledgers. We present a number of attack scenarios and potential vulnerabilities of the protocol and introduce a number of additional features which enhance its resilience. Specifically, a blacklisting algorithm, which is based on a reputation-weighted threshold, is introduced to handle both spamming and multirate malicious attackers. A solidification request component is also introduced to ensure the fairness and consistency of the network in the presence of attacks. Finally, a timestamp component is also introduced to maintain the consistency of the network in the presence of multirate attackers. Simulations to illustrate the efficacy and robustness of the revised protocol are also presented.

【Keywords】Access control; Blockchains; Internet of Things; Distributed ledger; Protocols; Computer architecture; Peer-to-peer computing; Distributed ledger technology; efficient communications and networking; network architecture; security and privacy

【发表时间】2022 JUL 1

【收录时间】2022-06-26

【文献类型】实证性文章

【主题类别】

区块链技术-核心技术-分布式存储