Stable High-Speed Encryption Key Distribution via Synchronization of Chaotic Optoelectronic Oscillators

Böhm, Fabian; Sahakian, Sevada; Dooms, Ann; Verschaffelt, Guy; Sande, Guy Van der

doi:10.1103/physrevapplied.13.064014

Cited by 22 publications

(10 citation statements)

References 21 publications

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“…For electrical chaos, its bandwidth limits the key rate. For optoelectronic oscillator, a short synchronization recovery time of 0.5 ns was numerically predicted 17 , which indicates a high key rate but remains to be verified experimentally.…”

Section: Introductionmentioning

confidence: 97%

“…The reported classical physical key distribution methods are mainly based on physical unclonable function 2 , fiber laser 3 – 5 , fiber channel noise 6 – 8 , and electrical or optical chaos 9 – 17 . In the physical unclonable function method, two users extract random bits as private keys from the optical speckle pattern of each volumetric scattering material and form a public key dictionary 2 .…”

Section: Introductionmentioning

confidence: 99%

“…However, the final key rate of the laser-chaos-based distribution system with chaos-shift keying modulation is seriously restricted by the chaos synchronization recovery time in the magnitude of tens of nanoseconds which is limited by the laser relaxation oscillation frequency. It is noted that electrical chaos 16 and chaotic optoelectronic oscillator 17 have been demonstrated recently for key distribution in back-to-back synchronization but without keying-modulation on synchronization for an additional layer of security. For electrical chaos, its bandwidth limits the key rate.…”

Section: Introductionmentioning

confidence: 99%

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0.75 Gbit/s high-speed classical key distribution with mode-shift keying chaos synchronization of Fabry–Perot lasers

Gao

Wang

et al. 2021

Light Sci Appl

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High-speed physical key distribution is diligently pursued for secure communication. In this paper, we propose and experimentally demonstrate a scheme of high-speed key distribution using mode-shift keying chaos synchronization between two multi-longitudinal-mode Fabry–Perot lasers commonly driven by a super-luminescent diode. Legitimate users dynamically select one of the longitudinal modes according to private control codes to achieve mode-shift keying chaos synchronization. The two remote chaotic light waveforms are quantized to generate two raw random bit streams, and then those bits corresponding to chaos synchronization are sifted as shared keys by comparing the control codes. In this method, the transition time, i.e., the chaos synchronization recovery time is determined by the rising time of the control codes rather than the laser transition response time, so the key distribution rate is improved greatly. Our experiment achieved a 0.75-Gbit/s key distribution rate with a bit error rate of 3.8 × 10−3 over 160-km fiber transmission with dispersion compensation. The entropy rate of the laser chaos is evaluated as 16 Gbit/s, which determines the ultimate final key rate together with the key generation ratio. It is therefore believed that the method pays a way for Gbit/s physical key distribution.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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0.75 Gbit/s high-speed classical key distribution with mode-shift keying chaos synchronization of Fabry–Perot lasers

Gao

Wang

et al. 2021

Light Sci Appl

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“…It relies on pre-shared key between legitimate transmitter and receiver sides and, interestingly, it is impossible to be broken by attackers provided that three conditions are satisfied. The first is that the key is at least as long as the plaintext, the second condition is that it is used only for one time, and finally, the key should be completely random [34]. The one-time pad encryption is used essentially for crucial military and diplomatic communications.…”

Section: Introductionmentioning

confidence: 99%

“…In chaos-based encryption systems which rely on chaos synchronization, a drive chaotic signal is needed and transmitted in public channel to acquire synchronization state for transmitter and receiver entities [34], [45]- [46]. Also, the transmitter and receiver sides should have identical values of parameters.…”

Section: Introductionmentioning

confidence: 99%

On Ghost Attractor in Blinking Chaotic MVD Memristor-Based Circuit and its Application

Ramaswamy¹,

El-Sayed

Elsadany

et al. 2021

IEEE Access

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This work is devoted to explore the possible existence of ghost attractors in a proposed nonautonomous blinking circuit with nonlinear memristors along with their potential application. The nonlinear dynamics of new memristor-based blinking circuit are significantly influenced by the speed of random switchings between its autonomous subcircuits. So, the effects of varying stochastic switching rate on the dynamical behaviors of blinking circuit are examined. It is demonstrated that it is possible to stimulate a non-stationary chaotic attractor for the blinking circuit which is surprisingly different from the attractors of composing subcircuits which exhibit simple periodic dynamics. A sufficiently small time period for random switchings in addition to precise tuning of circuit parameters are the major requirements for establishing these ghost attractors. The fascinating features of the induced ghost attractors render them appropriate noise-like source for secure communications applications. So, we proposed a new pseudochaos encryption algorithm that exploits the memristor-based blinking circuit in a more suitable digital platform. The proposed scheme overcomes the usual degradation in performance of digital chaos due to finite precision representation of floating numbers.INDEX TERMS Memristors; pseudo-chaos encryption; ghost attractors; blinking circuit.

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Topologically Defective Lattice Potential‐Based Gain‐Dissipative Ising Annealer with Large Noise Margin

Liao,

Tang,

Sarker

et al. 2024

Advanced Physics Research

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Gain‐dissipative Ising machines (GIMs) are annealers inspired by physical systems such as Ising spin glasses to solve combinatorial optimization problems. Compared to traditional quantum annealers, GIM is relatively easier to scale and can save on additional power consumption caused by low‐temperature cooling. However, traditional GIMs have a limited noise margin. Specifically, their normal operation requires ensuring that the noise intensity is lower than their saturation fixed point amplitude, which may result in increased power consumption to suppress noise‐induced spin state switching. To enhance the noise robustness of GIM, in this study a GIM based on a topologically defective lattice potential (TDLP) is proposed. Numerical simulations demonstrate that the TDLP‐based GIM can accurately simulate the bifurcation spin evolution in the Ising model. Furthermore, through the MAXCUT benchmark based on G‐set graphs, the optimal performance of TDLP‐based GIM is shown to surpass that of traditional GIMs. Additionally, the proposed TDLP‐based GIM successfully solves the MAXCUT benchmark and domain clustering dynamics benchmark based on G‐set graphs when the noise intensity exceeds its saturation fixed‐point amplitude. This indicates that the proposed system provides a promising architecture for breaking the small noise constraints required by traditional GIMs.

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Stable High-Speed Encryption Key Distribution via Synchronization of Chaotic Optoelectronic Oscillators

Cited by 22 publications

References 21 publications

0.75 Gbit/s high-speed classical key distribution with mode-shift keying chaos synchronization of Fabry–Perot lasers

0.75 Gbit/s high-speed classical key distribution with mode-shift keying chaos synchronization of Fabry–Perot lasers

On Ghost Attractor in Blinking Chaotic MVD Memristor-Based Circuit and its Application

Topologically Defective Lattice Potential‐Based Gain‐Dissipative Ising Annealer with Large Noise Margin

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