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Highly Efficient Known-Plaintext Attacks Against Orthogonal Blinding Based Physical Layer Security

机译:针对基于正交盲的物理层安全性的高效已知明文攻击

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摘要

In this letter, we describe highly effective known-plaintext attacks against physical layer security schemes. We substantially reduce the amount of required known-plaintext symbols and lower the symbol error rate (SER) for the attacker. In particular, we analyze the security of orthogonal blinding schemes that disturb an eavesdropper's signal reception using artificial noise transmission. We improve the attack efficacy using fast converging optimization algorithms and combining the measurements of neighboring subchannels in a multicarrier system. We implement the enhanced attack algorithms by solving unregularized and regularized least squares problems. By means of simulation, we show that the performance of the new attack algorithms supersedes the normalized least mean square approach discussed in the work of Schulz , e.g., by lowering the eavesdropper's SER by 82% while using 95% less known plaintext.
机译:在这封信中,我们描述了针对物理层安全方案的高效已知明文攻击。我们大大减少了所需的已知明文符号的数量,并降低了攻击者的符号错误率(SER)。特别是,我们分析了使用人工噪声传输干扰窃听者信号接收的正交盲方案的安全性。我们使用快速收敛的优化算法并结合多载波系统中相邻子信道的测量来提高攻击效率。我们通过解决非正则化和正则化最小二乘问题来实施增强型攻击算法。通过仿真,我们显示出新的攻击算法的性能取代了Schulz工作中讨论的标准化最小均方方法,例如,通过将窃听者的SER降低了82%,同时使用了95%的鲜为人知的明文。

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