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arXiv 2107.00210eess.SP
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友好干扰下基于隐蔽通信和信息理论安全的不同安全要求的安全传输

Secure Transmission with Different Security Requirements Based on Covert Communication and Information-Theoretic Security in Presence of Friendly Jammer

Pooya Baee, Farid Samsami khodadad, Moslem Forouzesh

摘要:

在本文中,我们研究联合信息理论的安全性和隐蔽通信的网络中存在的一个单一的发射机(爱丽丝),一个友好的干扰,一个不可信的用户,两个合法的用户,和一个单一的监护人的通道(威利)。在所考虑的网络中,其中一个授权用户Bob需要安全和隐蔽的通信,因此他的消息必须被安全地发送,同时,他与发送者的通信的存在不应该被信道的管理员Willie检测到,同时,另一个授权用户Carol需要隐蔽通信。安全通信的目的是防止信息被网络上的不可信用户破译,这就引出了物理层安全方法之一,即信息安全传输理论。在某些情况下,除了保护信息的内容外,对用户来说重要的是,传输的存在不被对手检测到,这导致我们进行秘密通信。在所提出的网络模型中,假设对于隐蔽通信要求,Alice在一个时隙中不会向合法用户发送任何消息,而在另一个时隙中将向他们发送消息(Bob和Carol)。隐蔽通信的主要挑战之一是低传输速率,因为我们必须降低传输功率,使主要信息隐藏在背景噪声中。

英文摘要:

In this paper, we investigate joint information-theoretic security and covert communication on a network in the presence of a single transmitter (Alice), a friendly jammer, a single untrusted user, two legitimate users, and a single warden of the channel (Willie). In the considered network, one of the authorized users, Bob, needs a secure and covert communication, and therefore his message must be sent securely, and at the same time, the existence of his communication with the transmitter should not be detected by the channel's warden, Willie, Meanwhile, another authorized user, Carol, needs covert communication. The purpose of secure communication is to prevent the message being decoded by the untrusted user who is present on the network, which leads us to use one of the physical layer security methods, named the secure transmission of information theory. In some cases, in addition to protecting the content of the message, it is important for the user that the existence of the transmission not being detected by an adversary, which leads us to covert communication. In the proposed network model, it is assumed that for covert communication requirements, Alice will not send any messages to legitimate users in one time slot and in another time slot will send to them both (Bob and Carol). One of the main challenges in covert communication is low transmission rate, because we have to reduce the transmission power such that the main message get hide in background noise.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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