Chaotic Polarization-Assisted ${L}$ DPSK-MPPM Modulation for Free-Space Optical Communications

Elfiqi, Abdulaziz E.; Khallaf, Haitham S.; Hegazy, Salem F.; Elsonbaty, Amr; Shalaby, Hossam M. H.; Obayya, S. S. A.

doi:10.1109/twc.2019.2920970

Cited by 20 publications

(14 citation statements)

References 57 publications

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“…In contrast to other works, the simulation results revealed superior performance. The algorithm in [46] depends on L-ary differential phase-shift keying multiple pulse position modulation (LDPSK-MPPM) that is protected by a discrete chaos mechanism in the physical layer. Device protection was tested for various forms of attacks, such as brute-force, differential, and statistical attacks by Monte Carlo (MC) simulations.…”

Section: Related Workmentioning

confidence: 99%

“…In the horizontal, vertical, and diagonal directions, the adjacent pixels of the original video frame are strongly correlated. An ideal encryption algorithm should have a sufficiently low correlation between the encrypted video frame pixels to avoid any statistical attacks [38], [46]. The correlations of the adjacent pixels in the plain and encrypted video frames are evaluated and compared by arbitrarily picking 2000 pairs of adjacent pixels in every direction of the two video frames.…”

Section: A Correlation Analysismentioning

confidence: 99%

“…The histogram displays pixel level distribution in a video frame. Ciphered video frame histograms must be distributed uniformly for highly reliable encryption techniques to withstand statistical attacks [38], [46]. The histograms of various original frames and the corresponding ciphered frames are displayed in Fig.…”

Section: B Histogram Analysismentioning

confidence: 99%

“…The number of pixel changes rate (NPCR) and unified average change intensity (UACI) are typically utilized for differential attack analysis. Eqs (55)-(57) describe these definitions [38], [46], [47]. This article has been accepted for publication in a future issue of this journal, but has not been fully edited.…”

Section: Differential Attacksmentioning

confidence: 99%

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Efficient and Secure Bit-Level Chaos Security Algorithm for Orbital Angular Momentum Modulation in Free-Space Optical Communications

et al. 2021

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Currently, secure multimedia applications are becoming a very hot research topic, especifically over the Internet and wireless communication networks due to their rapid progress. Several researchers have implemented various chaotic image and video encryption algorithms to achieve data stability and communication security. This paper presents a novel bit-level video frame encryption algorithm that is dependent on the piecewise linear chaotic maps (PWLCMs). It is implemented for orbital angular momentum (OAM) modulation over different turbulence channels. Firstly, the mathematical model for the bit error rate (BER) of OAM is derived over the gamma-gamma turbulence channel. After that, a comparison between the theoretical results from mathematica and the simulation results from MATLAB for different turbulence strengths, signal-to-noise ratios (SNRs), and propagation distance values is presented to assure that there is a perfect match. The proposed OAM video cryptosystem is checked using entropy analysis, histogram testing, attack analysis, time analysis, correlation testing, differential analysis, and other quality and security evaluation metrics. The simulation results and the performance analysis confirm that the proposed cryptosystem is reliable and secure for video frame encryption, and communication with different turbulence conditions in free space.INDEX TERMS PWLCM, Multimedia security, Free-space optics, Gamma-gamma turbulence channel, Orbital angular momentum.

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Section: Related Workmentioning

confidence: 99%

Section: A Correlation Analysismentioning

confidence: 99%

Section: B Histogram Analysismentioning

confidence: 99%

Section: Differential Attacksmentioning

confidence: 99%

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Efficient and Secure Bit-Level Chaos Security Algorithm for Orbital Angular Momentum Modulation in Free-Space Optical Communications

et al. 2021

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“…There are few partial attempts to solve the aforementioned security issues in literature. For example, the need for chaos synchronization can be ignored if digital implementations of identical chaotic maps are employed by both communication sides [47]- [48]. Although it is known that a degradation in statistical properties of chaotic output due to finite precision of computing machine, the pseudo-chaos or finite precision error can be exploited to treat this degradation and greatly improve the performance of encryption technique, see [47] and reference therein.…”

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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Optical cryptosystem for visually meaningful encrypted images based on gyrator transform and Hénon map

et al. 2022

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Chaotic Polarization-Assisted ${L}$ DPSK-MPPM Modulation for Free-Space Optical Communications

Cited by 20 publications

References 57 publications

Efficient and Secure Bit-Level Chaos Security Algorithm for Orbital Angular Momentum Modulation in Free-Space Optical Communications

Efficient and Secure Bit-Level Chaos Security Algorithm for Orbital Angular Momentum Modulation in Free-Space Optical Communications

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

Optical cryptosystem for visually meaningful encrypted images based on gyrator transform and Hénon map

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