Chaotic circuit with OTA based memristor on image cryptology

Yildirim, Melih; Kaçar, Fırat

doi:10.1016/j.aeue.2020.153490

Cited by 23 publications

(8 citation statements)

References 51 publications

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“…Power spectral density analysis of the jerk circuit signals is also carried out using Multisim, which confirms chaos in the jerk circuit. Circuit design of a chaotic system is useful for real-world applications (Yildirim and Kacar, 2020;Wang et al, 2021;Rao et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

A new multistable jerk system with Hopf bifurcations, its electronic circuit simulation and an application to image encryption

Vaidyanathan

Moroz

Latif

et al. 2021

IJCAT

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In this work, we announce a new 3-D jerk system and show that it is chaotic and dissipative with the calculation of the Lyapunov exponents of the system. By performing a detailed bifurcation analysis, we observe that the new jerk system exhibits Hopf bifurcations. It is also shown that the new jerk system exhibits multistability behaviour with two coexisting chaotic attractors. An electronic circuit simulation of the jerk system is built using Multisim. Finally, we design a new approach to image encryption as a cryptographic application of our chaotic jerk system. The simulation outcomes prove the efficiency of the proposed encryption scheme with high security.

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Section: Introductionmentioning

confidence: 99%

A new multistable jerk system with Hopf bifurcations, its electronic circuit simulation and an application to image encryption

Vaidyanathan

Moroz

Latif

et al. 2021

IJCAT

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“…Numerous studies based on information and data encryption have been carried out [9][10][11][12][13][14][15][16][17][18][19][20][21][22]. Some of these studies have suggested encryption techniques using chaotic system [9, 12, 13, 16-19, 21, 22].…”

Section: Introductionmentioning

confidence: 99%

“…A novel encryption scheme is suggested in order to cipher the voice data. Differently from the previous studies [9][10][11][12][13][14][15][16][17][18][19][20][21][22] on encryption technique, the algorithm of XOR operation for sequential bits of the pixel has been suggested. In addition, the complement and four bits swapping operations dependent on the number of bits equal to one have also been proposed in this work.…”

Section: Introductionmentioning

confidence: 99%

Steganography-based voice hiding in medical images of COVID-19 patients

Yildirim

2021

Nonlinear Dyn

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A novel image steganography technique in order to hide the ciphered voice data has been suggested in this work. The doctor's voice comments belonging to a coronavirus disease 2019 (COVID-19) patient are hidden in a medical image in order to protect the patient information. The introduced steganography technique is based on chaos theory. Firstly, the voice comments of the doctor are converted to an image and secondly, they are ciphered utilizing the suggested encryption algorithm based on a chaotic system. Then, they are embedded into the cover medical image. A lung angiography dual-energy computed tomography (CT) scan of a COVID-19 patient is used as a cover object. Numerical and security analyses of steganography method have been performed in MATLAB environment. The similarity metrics are calculated for R, G, B components of cover image and stego image as visual quality analysis metrics to examine the performance of the introduced steganography procedure. For a 512 9 512 pixel cover image, SSIM values are obtained as 0.8337, 0.7926, and 0.9273 for R, G, B components, respectively. Moreover, security analyses which are differential attack, histogram, information entropy, correlation of neighboring pixels and the initial condition sensitivity are carried out. The information entropy is calculated as 7.9993 bits utilizing the suggested steganography scheme. The mean value of the ten UACI and NPCR values are obtained as 33.5688% and 99.8069%, respectively. The results of security analysis have revealed that the presented steganography procedure is able to resist statistical attacks and the chaotic system-based steganography scheme shows the characteristics of the sensitive dependence on the initial condition and the secret key. The proposed steganography method which is based on a chaotic system has superior performance in terms of being robust against differential attack and hiding encrypted voice comments of the doctor. Moreover, the introduced algorithm is also resistant against exhaustive, known plaintext, and chosen plaintext attacks.

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“…Furthermore, some chaotic oscillators are too complex to implement because some of them use analog signal multipliers. [Yildirim and Kacar, 2020;Pham et al, 2017]. In contrast, there is a simple chaotic circuit but required to use of inductors.…”

Section: Introductionmentioning

confidence: 99%

A random signal generator by using analog electronics

Acho

2021

CAP

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The describing function theory is a powerful mathematical tool to predict oscillations in non-linear dynamical systems. This theory is here invoked to design a random signal generator and realized by using analog electronic elements. Then, and according to experimental results, histograms of the resultant signal are shown along with the generated signal in the time domain. Finally, the proposed electronic circuit is simple and cheap to construct.

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Chaotic circuit with OTA based memristor on image cryptology

Cited by 23 publications

References 51 publications

A new multistable jerk system with Hopf bifurcations, its electronic circuit simulation and an application to image encryption

A new multistable jerk system with Hopf bifurcations, its electronic circuit simulation and an application to image encryption

Steganography-based voice hiding in medical images of COVID-19 patients

A random signal generator by using analog electronics

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