Results 21 to 30 of about 2,301,868 (306)

A novel image encryption scheme based on 3D bit matrix and chaotic map with Markov properties

open access: yesEgyptian Informatics Journal, 2019
Based on 3D cat map, reverse 3D cat map and an improved class of chaotic maps with Markov properties, an effective bit-level image encryption scheme is proposed.
Meng Ge, Ruisong Ye
doaj   +1 more source

A Novel Chaotic Map and an Improved Chaos-Based Image Encryption Scheme

open access: yesThe Scientific World Journal, 2014
In this paper, we present a novel approach to create the new chaotic map and propose an improved image encryption scheme based on it. Compared with traditional classic one-dimensional chaotic maps like Logistic Map and Tent Map, this newly created ...
Xianhan Zhang, Yang Cao
doaj   +1 more source

2D Logistic-Modulated-Sine-Coupling-Logistic Chaotic Map for Image Encryption

open access: yesIEEE Access, 2019
Due to the significant properties of unpredictability, ergodicity, and initial state sensitivity, chaotic system is widely used as a useful tool in image encryption.
Hegui Zhu, Yiran Zhao, Yujia Song
doaj   +1 more source

Image Encryption Using a Spectrally Efficient Halton Logistics Tent (HaLT) Map and DNA Encoding for Secured Image Communication

open access: yesEntropy, 2022
With the advancement of technology worldwide, security is essential for online information and data. This research work proposes a novel image encryption method based on combined chaotic maps, Halton sequence, five-dimension (5D) Hyper-Chaotic System and
Sakshi Patel, Thanikaiselvan Veeramalai
doaj   +1 more source

Speech encryption using chaotic shift keying for secured speech communication

open access: yesEURASIP Journal on Audio, Speech, and Music Processing, 2017
This paper throws light on chaotic shift keying-based speech encryption and decryption method. In this method, the input speech signals are sampled and its values are segmented into four levels, namely L 0, L 1, L 2, and L 3. Each level of sampled values
P. Sathiyamurthi, S. Ramakrishnan
doaj   +1 more source

A 2D Chaotic Oscillator for Analog IC

open access: yesIEEE Open Journal of Circuits and Systems, 2022
In this paper, we have proposed the design of an analog two-dimensional (2D) discrete-time chaotic oscillator. 2D chaotic systems are studied because of their more complex chaotic behavior compared to one-dimensional (1D) chaotic systems.
Partha Sarathi Paul   +3 more
doaj   +1 more source

Abrupt bifurcations in chaotic scattering : view from the anti-integrable limit [PDF]

open access: yes, 2013
Bleher, Ott and Grebogi found numerically an interesting chaotic phenomenon in 1989 for the scattering of a particle in a plane from a potential field with several peaks of equal height.
Chen, Yi-Chiuan   +2 more
core   +1 more source

Self-Parameterized Chaotic Map for Low-Cost Robust Chaos

open access: yesJournal of Low Power Electronics and Applications, 2023
This paper presents a general method, called “self-parameterization”, for designing one-dimensional (1-D) chaotic maps that provide wider chaotic regions compared to existing 1-D maps. A wide chaotic region is a desirable property, as it helps to provide
Partha Sarathi Paul   +4 more
doaj   +1 more source

Random Delays and the Synchronization of Chaotic Maps [PDF]

open access: yesPhysical Review Letters, 2005
We investigate the dynamics of an array of logistic maps coupled with random delay times. We report that for adequate coupling strength the array is able to synchronize, in spite of the random delays. Specifically, we find that the synchronized state is a homogeneous steady-state, where the chaotic dynamics of the individual maps is suppressed.
Masoller Alonso, Cristina   +1 more
openaire   +5 more sources

Construction of a New Discrete Chaotic Mapping Based on the Robust Chaos Theorem

open access: yesMathematics
Chaotic systems serve as fundamental pseudo-random sequence generators in encryption algorithms and play a vital role in communication security. However, most current research still focus on the classical Logistic chaotic map, making it vulnerable to ...
Liyan Hua   +4 more
doaj   +1 more source

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