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首页> 外文期刊>Dependable and Secure Computing, IEEE Transactions on >Pollution Attacks and Defenses in Wireless Interflow Network Coding Systems
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Pollution Attacks and Defenses in Wireless Interflow Network Coding Systems

机译：无线互穿网络编码系统中的污染攻防

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摘要

We study data pollution attacks in wireless interflow network coding systems. Although several defenses for these attacks are known for intraflow network coding systems, none of them are applicable to interflow coding systems. We formulate a model for interflow network coding that encompasses all the existing systems, and use it to analyze the impact of pollution attacks. Our analysis shows that the effects of pollution attacks depend not only on the network topology, but also on the location and strategy of the attacker nodes. We propose CodeGuard, a reactive attestation-based defense mechanism that uses efficient bit-level traceback and a novel cross-examination technique to unequivocally identify attacker nodes. We analyze the security of CodeGuard and prove that it is always able to identify and isolate at least one attacker node on every occurrence of a pollution attack. We analyze the overhead of CodeGuard and show that the storage, computation, and communication overhead are practical. We experimentally demonstrate that CodeGuard is able to identify attacker nodes quickly (within 500 ms) and restore system throughput to a high level, even in the presence of many attackers, thus preserving the performance of the underlying network coding system.
机译：我们研究无线互通网络编码系统中的数据污染攻击。尽管对于流内网络编码系统已知有针对这些攻击的几种防御措施，但它们均不适用于流间编码系统。我们为包含所有现有系统的流网络编码制定了一个模型，并使用它来分析污染攻击的影响。我们的分析表明，污染攻击的影响不仅取决于网络拓扑，还取决于攻击者节点的位置和策略。我们提出CodeGuard，这是一种基于反应式证明的防御机制，该机制使用有效的位级别回溯和新颖的交叉检查技术来明确标识攻击者节点。我们分析了CodeGuard的安全性，并证明了它始终能够在每次污染攻击发生时识别并隔离至少一个攻击者节点。我们分析了CodeGuard的开销，并表明存储，计算和通信开销是切实可行的。我们通过实验证明，即使在存在许多攻击者的情况下，CodeGuard仍能够快速（在500毫秒内）识别攻击者节点并将系统吞吐量恢复到较高水平，从而保留了底层网络编码系统的性能。

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