Secret key agreement using a virtual wiretap channel

Sharifian, Setareh; Lin, Fei

doi:10.1109/infocom.2017.8057119

Cited by 8 publications

(3 citation statements)

References 16 publications

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“…Furthermore, it is an intuitive idea to further promote the SKGR by introducing the randomness of two-way transmitted signals. Such that, [17]- [20] explore the SKG methods using two-way random signals, which can completely avoid channel estimation and significantly improve the SKGR. Based on information theory, [17] analyzed the validity and security of two-way SKG protocol, and [18] derived the upper and lower bounds of the SKGR when transmitting two-way random signals.…”

Section: A Related Workmentioning

confidence: 99%

“…Such that, [17]- [20] explore the SKG methods using two-way random signals, which can completely avoid channel estimation and significantly improve the SKGR. Based on information theory, [17] analyzed the validity and security of two-way SKG protocol, and [18] derived the upper and lower bounds of the SKGR when transmitting two-way random signals. However, the critical issue faced in this method is how to design a proper common random source to obtain more randomness information.…”

Section: A Related Workmentioning

confidence: 99%

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Secret Key Generation With Cross Multiplication of Two-Way Random Signals

et al. 2019

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The secret key generation rate (SKGR) of current physical layer security methods is not high enough for practical requirements. A novel SKG method based on the cross multiplication (XM) of twoway random signals is proposed for TDD-MIMO system. The principle concealed beneath the XM method is found that the XM operation not only derives the common random source for both legitimate partners, but also employs new generated cross-terms due to bilinear operation to provide more measurements of the random source and more secret keys accordingly, which is essentially superior to the existing paired multiplication (PM) method. Then, the theoretical SKGR of two-way random signals is analyzed and it is validated that SKGR is determined by the randomness of the reciprocal channel and the two-way secure transmission rates collectively. Furthermore, SKGR of XM and PM methods are derived in closed-form respectively under infinite antenna condition and the former shows a linear increase with the channel coherence interval, which are also approximately valid for finite antenna. The innovative conclusion means the slow-changing property of some channel environments can be further exploited and the proposed XM method can be applied to solve the low SKGR problem in static or quasi-static channel environment such as IoT. Finally, the simulations verify the theoretical results and show that the XM method achieves several orders of magnitude higher SKGR than the PM method.

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Section: A Related Workmentioning

confidence: 99%

Section: A Related Workmentioning

confidence: 99%

Secret Key Generation With Cross Multiplication of Two-Way Random Signals

et al. 2019

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“…In general, jamming against eavesdroppers was introduced because the form of radiation was not responsible for the secure transmission to destroy the eavesdropper channel. Artificial noise generation is a method of disrupting eavesdropper(s) in a network that can sometimes be done by the transmitter [18] or even the legal receiver [19], but these disruption methods reduce the network's efficiency due to channel conditions and severe self-interference [20]. Instead, a more effective way is to use a friendly jammer in the network.…”

Section: Introductionmentioning

confidence: 99%

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

Baee

Khodadad

Forouzesh

2022

Preprint

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In this paper, we investigate joint information-theoretic security andcovert communication on a network in the presence of a single transmit-ter (Alice), a friendly jammer, a single untrusted user, two legitimateusers, and a single warden (Willie). In the considered network, one of theauthorized users, Bob, needs a secure communication, and therefore hismessage must be sent securely, and at the same time, the other autho-rized user, Carol, needs covert communication, i.e., the existence of hiscommunication with the transmitter should not be detected by the war-den, Willie. In the proposed network model, it is assumed that for covertcommunication requirements, Alice will use an on-off strategy to sendthe data to the legitimate receivers of the network, so that it decides onthe sending of data at any specific time slot. One of the main challengesin covert communication is low data rate because we have to reduce thetransmission power such that the main message gets to hide in back-ground noise. In the proposed network, a jammer is employed to destroy the eavesdropper and warden’s channel. To eliminate the interferencecreated by the jammer, it has been proposed that the used jammer in thenetwork be friendly. In this study, in addition to using joint security ofinformation theory and covert communication, we examine the averagetransmission rate according to the limitations and requirements of covertcommunication and the requested quality of service by users, by creatingartificial noise in the network which is generated by a friendly jammer.

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