Design of an Analog Time-Varying Audio Cryptography System Based on Sliding Mode Synchronization of Non-identical Chaotic Systems Described with Time-Delayed Fractional-Order Dynamics

Razmara, Susan; Yahyazadeh, Meisam

doi:10.1007/s13369-022-06606-x

Cited by 4 publications

(12 citation statements)

References 28 publications

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“…Inspired by the above discussion, the goal of the present research is to design a voice cryptosystem based on the Mittag-Leffler synchronization of chaotic systems with unknown parameters, mismatched structures, different fractional derivative orders, non-identical time delays, and external disturbances. In fact, the present research extends the voice cryptosystem presented in [17] using unknown chaotic systems and the Mittag-Leffler stability analysis for the first time.…”

Section: Introductionmentioning

confidence: 72%

“…4) 0.6 1.7 5.4 -Remark 4. From the analysis of Table 2, it can be deduced that the control inputs of the global Mittag-Leffler synchronization scheme suggested in this study are approximately 34, 3, and 5 times smaller than those of the asymptotic synchronization approaches designed in [13], [14], and [17], respectively.…”

Section: R T L R T R T R T R T C T D R T R T R T L R T C T D R T R T ...mentioning

confidence: 84%

“…Therefore, the voice cryptosystem suggested in the present study possesses a larger key space than the voice cryptosystems designed in [10], [11], [13], [14], and [17]. This advantage makes the voice cryptosystem proposed in this research have a higher security level than the voice cryptosystems presented in [10], [11], [13], [14], and [17].…”

Section:  mentioning

confidence: 87%

“…While, voice cryptosystems designed using chaotic systems with different fractional orders have a higher degree of freedom [16]. In [17], Razmara et al have presented a voice cryptosystem based on synchronization of time-delayed chaotic systems with different fractional derivative orders and external disturbances. Although the voice cryptosystem presented in [17] does not have the disadvantages of the above voice cryptosystems, known chaotic systems have been used to design it.…”

Section: Introductionmentioning

confidence: 99%

“…In [17], Razmara et al have presented a voice cryptosystem based on synchronization of time-delayed chaotic systems with different fractional derivative orders and external disturbances. Although the voice cryptosystem presented in [17] does not have the disadvantages of the above voice cryptosystems, known chaotic systems have been used to design it. Whereas, all or some of the parameters of a system are often unknown in practice [18].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Design of a new voice cryptosystem based on the global Mittag-Leffler synchronization of mismatched chaotic systems with unknown parameters, fractional orders, time delays and external disturbances

Razmara

Yahyazadeh

Marj

2022

Preprint

Self Cite

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In this research, first two chaotic systems with unknown parameters, mismatched structures, different fractional derivative orders, non-identical time delays, and external disturbances are synchronized based on the Mittag-Leffler stability analysis. Then, using the synchronized systems, a new voice cryptosystem is designed to securely send voice messages via public communication channels. Finally, numerical simulations confirm that the designed voice cryptosystem possesses an easier practical implementation, more secure and accurate results, and a higher security level than previous voice cryptosystems.

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Section: Introductionmentioning

confidence: 72%

Section: R T L R T R T R T R T C T D R T R T R T L R T C T D R T R T ...mentioning

confidence: 84%

Section:  mentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Design of a new voice cryptosystem based on the global Mittag-Leffler synchronization of mismatched chaotic systems with unknown parameters, fractional orders, time delays and external disturbances

Razmara

Yahyazadeh

Marj

2022

Preprint

Self Cite

View full text Add to dashboard Cite

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Voice encryption using a unified hyper-chaotic system

Bonny

Nassan

Baba

2022

Multimed Tools Appl

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Image encryption algorithm based on matrix projective combination-combination synchronization of an 11-dimensional time delayed hyperchaotic system

Bharti,

Balasubramaniam,

Murugesan

2024

Phys. Scr.

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Secure image transmission is critical to protect sensitive data from unauthorized access, especially in an era of increasing digital threats. Chaotic systems with their inherent complexity and unpredictability, provide a promising solution for enhancing encryption security. To contribute to this field, we investigate a new 11-dimensional hyperchaotic system by taking advantage of its complex dynamical properties to strengthen security. The high dimensional of the system intensifies chaotic behaviors such as stability, attractors and sensitive to initial conditions, making it particularly suitable for encrypted transmission. Time delay is an important factor to be considered affecting the control and synchronization in nonlinear system. Additionally, time delays include the effects of past states, further increasing the unpredictability of the system. To explore these dynamics, we analyze the Lyapunov exponents, stability of equilibrium points, symmetry and dissipation. A matrix projective combination-combination synchronization scheme is proposed to synchronize four identical 11-dimensional hyperchaotic systems with time delay. Nonlinear active controllers designed based on Lyapunov stability theory are used to achieve this synchronization. This work advances an important idea for encryption and decryption algorithms, which is the secure transmission of images using affine encryption. In the affine encryption algorithm, the key is based on the solution of synchronized chaotic delayed systems and the private message of the sender and receiver. This proposed encryption and decryption algorithms have been applied on plain images. Numerical simulations and security analysis including key space, histogram, information entropy and correlation analysis are conducted to validate the theoretical results and encryption algorithm. Experimental analysis and comparisons with existing literature confirm the effectiveness and security of the proposed approach for cryptographic purposes.

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Design of an Analog Time-Varying Audio Cryptography System Based on Sliding Mode Synchronization of Non-identical Chaotic Systems Described with Time-Delayed Fractional-Order Dynamics

Cited by 4 publications

References 28 publications

Design of a new voice cryptosystem based on the global Mittag-Leffler synchronization of mismatched chaotic systems with unknown parameters, fractional orders, time delays and external disturbances

Design of a new voice cryptosystem based on the global Mittag-Leffler synchronization of mismatched chaotic systems with unknown parameters, fractional orders, time delays and external disturbances

Voice encryption using a unified hyper-chaotic system

Image encryption algorithm based on matrix projective combination-combination synchronization of an 11-dimensional time delayed hyperchaotic system

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