Secure Access Control for DAG-Based Distributed Ledgers

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