The growing concern of secure communication becomes more challenging when encountering a hybrid Full-duplex (FD) attacker possessing the dual capability to perform eavesdropping and jamming simultaneously. To analyze secrecy outage performance in the presence of such a potential attacker, the proposed work assumes complete information of the legitimate link only. It considers unavailability of complete information of all the ungoverned communication links including eavesdropping, jamming and self-interference link of attacker. FD operation is associated with the problem of imperfect self-interference cancellation. Our proposed analysis considers residual self-interference at the attacker's end in its modelling. The closed-form expressions have been obtained for secrecy outage probability under generalized as well as special cases. The results obtained facilitate in investigating the impact of fading under FD attack and provide important insights about source power, jamming power, attacker's location. Approximate closed-form results also help in reducing computation time by more than 55%.

中文翻译：

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利用合法链路 CSI 分析混合全双工攻击中的保密中断


当遇到具有同时执行窃听和干扰双重能力的混合全双工 (FD) 攻击者时，对安全通信的日益关注变得更具挑战性。为了分析存在此类潜在攻击者的情况下的保密中断性能，所提出的工作仅假设合法链路的完整信息。它考虑了所有非治理通信链路的完整信息的不可用性，包括攻击者的窃听、干扰和自干扰链路。 FD操作与不完善的自干扰消除问题相关。我们提出的分析在建模中考虑了攻击者端的残余自干扰。获得了广义和特殊情况下保密中断概率的封闭式表达式。获得的结果有助于研究 FD 攻击下的衰落影响，并提供有关源功率、干扰功率、攻击者位置的重要见解。近似封闭形式结果还有助于将计算时间减少 55% 以上。