论文标题
通过仿真对基于纠缠的区块链的安全分析
Security Analysis on Tangle-based Blockchain through Simulation
论文作者
论文摘要
设计基于DAG的区块链系统时，基于缠结的结构成为最有前途的解决方案之一。该方法通过直接确认并行的多个交易而不是线性中的单个块来提高可扩展性。但是，绩效增益可能带来潜在的安全风险。在本文中，我们通过全面评估构建了三种类型的攻击，即寄生虫攻击（PS），双支出攻击（DS）和混合攻击（HB）。为了实现这一目标，我们解构了基于缠结的项目（例如IOTA），并摘要重建简单但灵活的网络的主要组成部分。然后，我们非正式地定义了三个最小的动作，以逐层建立攻击策略。基于此，我们提供分析以评估不同类型的攻击。据我们所知，这是第一项对基于纠缠的区块链进行全面安全分析的研究。
The Tangle-based structure becomes one of the most promising solutions when designing DAG-based blockchain systems. The approach improves the scalability by directly confirming multiple transactions in parallel instead of single blocks in linear. However, the performance gain may bring potential security risks. In this paper, we construct three types of attacks with comprehensive evaluations, namely parasite attack (PS), double spending attack (DS), and hybrid attack (HB). To achieve that, we deconstruct the Tangle-based projects (e.g. IOTA) and abstract the main components to rebuild a simple but flexible network for the simulation. Then, we informally define three smallest actions to build up the attack strategies layer by layer. Based on that, we provide analyses to evaluate different types of attacks. To the best of our knowledge, this is the first study to provide a comprehensive security analysis of Tangle-based blockchains.
