A Novel Approach to Secure Communication in Physical Layer via Coupled Dynamical Systems

Ebrahimi, Najme; Mahdavifar, Hessam; Afshari, Ehsan

doi:10.1109/glocom.2018.8647557

Cited by 9 publications

(5 citation statements)

References 19 publications

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“…This, in turn, makes them unappealing for applications where nodes experience a static environment and have limited resources, e.g., IoT networks, sensor networks, etc. Also, solutions based on utilizing coupled dynamics existing in synchronization mechanisms [24], [25] and based on full-duplex communications [26] are proposed for low-complexity IoT networks, which are often limited to very short range communications.…”

Section: A Related Workmentioning

confidence: 99%

Physical Layer Secret Key Generation in Static Environments

Aldaghri

Mahdavifar

2020

IEEE Trans.Inform.Forensic Secur.

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133

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We consider the problem of symmetric secret key generation in quasi-static/static environments, where the amount of common randomness obtained from the characteristics of the physical layer channel is limited. In order to provide a high-rate secret key generation mechanism, we introduce a method called induced randomness. In this method, locally generated randomness is assumed at the legitimate parties. Such randomness together with the uniqueness provided by the wireless channel coefficients are utilized to enable high-rate secret key generation. We describe the proposed secret key generation protocol for two scenarios; for the case where the legitimate parties have a direct link (the first scenario), and for the case where the legitimate parties do not have a direct link and communicate through an untrusted relay (the second scenario). After the exchange of the induced randomness, highly correlated samples are generated by the legitimate parties. These samples are then quantized, reconciled, and hashed to compensate for the information leakage to the eavesdropper and to allow verification of consistency of the generated key bit sequences. We utilize semantic security measures and information-theoretic inequalities to upper bound the probability of successful eavesdropping attack in terms of the mutual information measures that can be numerically computed. Given certain reasonable system parameters this bound is numerically evaluated to be 2 −31 and 2 −11.3 in the first and the second scenario, respectively. Furthermore, in the considered numerical setup, the bit generation rate is 64 bits/packet, the bit error rate is 0.002% and 0.0029% in the first and the second scenario, respectively, and the eavesdropper's average bit error rate in both scenarios is almost 50%. The probability of accepting a mismatched key by legitimate parties is also upper bounded using properties of hash functions and is evaluated in the numerical setup to be 0.0015% for both scenarios.

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Section: A Related Workmentioning

confidence: 99%

Physical Layer Secret Key Generation in Static Environments

Aldaghri

Mahdavifar

2020

IEEE Trans.Inform.Forensic Secur.

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133

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“…We recently proposed a novel approach to implementation of physical layer security by exploiting coupling dynamics in the network [9]. Such coupling dynamics are already being used for synchronization in wireless networks.…”

Section: Introductionmentioning

confidence: 99%

“…Such coupling dynamics are already being used for synchronization in wireless networks. In particular, we suggested to use coupled oscillators to implement the proposed approach in radio-frequency (RF) front end [9]. It is wellknown that a network of RF coupled oscillators converges within nanoseconds to a steady-state condition provided that initial free-running frequencies are within a certain locking range [10], [11].…”

Section: Introductionmentioning

confidence: 99%

Secret Key Generation via Pulse-Coupled Synchronization

Mahdavifar

Ebrahimi

2019

2019 IEEE International Symposium on Information Theory (ISIT)

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A novel framework for sharing common randomness and generating secret keys in wireless networks is considered. In particular, a network of users equipped with pulse oscillators (POs) and coupling mechanisms in between is considered. Such mechanisms exist in synchronized biological and natural systems, and have been exploited to provide synchronization in distributed networks. We show that naturally-existing initial random phase differences between the POs in the network can be utilized to provide almost identical common randomness to the users. This randomness is extracted from the synchronization time in the network. Bounds on the entropy of such randomness are derived for a two-user system and a conjecture is made for a general n-user system. Then, a three-terminal scenario is considered including two legitimate users and a passive eavesdropper, referred to as Eve. Since in a practical setting Eve receives pulses with propagation delays, she can not identify the exact synchronization time. A simplified model is then considered for Eve's receiver and then a bound on the rate of secret key generation is derived. Also, it is shown, under certain conditions, that the proposed protocol is resilient to an active jammer equipped with a similar pulse generation mechanism.

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“…A lot of works are devoted to the calculation of GTS optimal stationary modes, some refer to the optimization of compressor stations operating modes [2][3][4][5][6]. Computational methods used include dynamic programming [7][8][9][10], gradient search [1], MILP and MINLP [3,11,12], evolutionary algorithms [2,4,5,13] and other methods [14,15].…”

Section: Introductionmentioning

confidence: 99%

An Algorithm for Calculating Gas Transmission System Optimal Stationary Mode

Belevitin¹

2019

E3S Web Conf.

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In this paper, we consider the problem of calculating the optimal stationary mode of the gas transmission system. The maximum throughput of the gas transmission system was used as optimization criterion. Presented are the problem statement and the solution procedure. The original problem is divided into two interrelated components: the MINLP problem and the temperature calculation. To solve the MINLP problem, the Successive Linear Programming (SLP) method was used in combination with the branch and boundary method applied to integer variables. Modeling of compressor shop operating modes was performed using integer variables. Described are the approaches to improving the convergence of the algorithm: the introduction of an additional optimization subcriterion and additional constraints for gas flows through GTS sections.

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A Novel Approach to Secure Communication in Physical Layer via Coupled Dynamical Systems

Cited by 9 publications

References 19 publications

Physical Layer Secret Key Generation in Static Environments

Physical Layer Secret Key Generation in Static Environments

Secret Key Generation via Pulse-Coupled Synchronization

An Algorithm for Calculating Gas Transmission System Optimal Stationary Mode

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