Recently, bionic signals have been used to achieve covert underwater acoustic communication (UWAC) with high signal-to-noise ratios (SNRs) over transmission systems. A high SNR allows the attackers to proceed with their mischievous goals and makes transmission systems vulnerable against malicious attacks. In this paper we propose an improved Merkle hash tree based secure scheme that can resist current underwater attacks, i.e., replay attack, fabricated message attack, message-altering attack, and analyst attack. Security analysis is performed to prove that the proposed scheme can resist these types of attacks. Performance evaluations show that the proposed scheme can meet UWAC limitations due to its efficiency regarding energy consumption, communication overhead, and computation cost.

最近，仿生信号已被用于在传输系统上实现具有高信噪比 (SNR) 的隐蔽水声通信 (UWAC)。高 SNR 允许攻击者继续他们的恶作剧目标，并使传输系统容易受到恶意攻击。在本文中，我们提出了一种改进的基于 Merkle 哈希树的安全方案，可以抵抗当前的水下攻击，即重放攻击、伪造消息攻击、消息更改攻击和分析攻击。进行安全分析以证明所提出的方案可以抵抗这些类型的攻击。性能评估表明，由于其在能源消耗、通信开销和计算成本方面的效率，所提出的方案可以满足 UWAC 的限制。