Feedback Control for Distributed Ledgers: An Attack Mitigation Policy for DAG-Based DLTs

• 成果类型: Article
• 署名作者: Ferraro, Pietro; Penzkofer, Andreas; King, Christopher; Shorten, Robert
• 署名单位: Imperial College London; Northeastern University
• 刊物名称: IEEE TRANSACTIONS ON AUTOMATIC CONTROL
• ISSN/ISSBN: 0018-9286
• DOI: 10.1109/TAC.2024.3372458
• 发表日期: 2024
• 页码: 5492-5499
• 关键词: Protocols; Writing; Peer-to-peer computing; Distributed ledger; DELAYS; stability analysis; Data structures; control theory; distributed ledger technologies; distributed systems

摘要

In this article, we present a feedback approach to the design of an attack mitigation policy for directed acyclic graph (DAG)-based distributed ledgers. We develop a model to analyze the behavior of the ledger under the so-called Tips Inflation Attack, which endangers the liveness of transactions, and we design a control strategy to counteract this attack strategy. The efficacy of this approach is showcased through a theoretical analysis, in the form of two theorems about the stability properties of the ledger with and without the controller, and extensive Monte Carlo simulations of an agent-based model of the distributed ledger.