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Robust image encryption method with cipher stream chaining process
(2019-02-01)
Tep, Sovan
;
Anantavrasilp, Isara
A new image encryption algorithm that uses one dimensional logistic map combined with perceptron model is proposed. The algorithm uses logistic map to produce pseudo random sequences, which are used sequences of keys to specify the weights of the perceptron. The, perceptron is used to encrypt the pixels of the image. The approach is also equipped with the novel Cipher Stream Chaining Process (CSCP), making it highly sensitive to given image. Our work is evaluated against histogram analysis, information entropy, key sensitivity analysis. Experiment results show that, the cipher image does not give out any information on the plain image and the algorithm is highly sensitive to plain image and key.
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Chen's Attractor in Music Composition
(2018-08-21)
Wainiya, Wasin
;
Sooraksa, Pitikhate
Algorithmic composition has been developed by using various methods. For example, one may use mathematical models to generate musical signals as melodies. Chaotic equations may also be used for the composition. In this paper, Chen's attractor is employed to generate the sequences of melodies and patterns by applying "the event" theory.
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Chen System as a Controlled Weather Model - Physical Principle, Engineering Design and Real Applications
(2018-04-01)
Sooraksa, Pitikhate
;
Chen, Guanrong
This paper presents the Chen system as a controlled weather model. Mathematically, the Chen system is dual to the Lorenz system via time reversal. Physically, the Chen system can be viewed as a controlled weather model from the anti-control perspective. This paper illustrates the physical principle of this controlled weather model, and develops an engineering design of the model for real indoor climate (temperature-humidity) regulation, with a perspective on outdoor weather control application.
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A new key generator for data encryption using chaos in digital filter
(2017-10-17)
Pich, Reatrey
;
Chivapreecha, Sorawat
;
Prabnasak, Jaruwit
The presented work of this paper is to propose the implementation of chaotic crypto-system with the new key generator using chaos in digital filter for data encryption and decryption. The chaos in digital filter of the second order system is produced by the coefficients which are initialed in the key generator to produce other new coefficients. Private key system using the initial coefficients value condition and dynamic input as password of 16 characters is to generate the coefficients for crypto-system. In addition, we have tension specifically to propose the solution of data security in lightweight cryptography based on external and internal key in which conducts with the appropriate key sensitivity plus high performance. The chaos in digital filter has functioned as the main major in the system. The experimental results illustrate that the proposed data encryption with new key generator system is the high sensitive system with accuracy key test 99% and can make data more secure with high performance.
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Anti-copy of 2D Barcode Using Multi-encryption Technique
(2014-01-01)
Phumpho, Suwilai
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Payakkawan, Poomyos
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Jansri, Anurak
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Tongaram, Direk
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Promprayoon, Chirasak
2D barcode can be found largely at product of department store. The general purpose of 2D barcode is to identify product. Process of 2D barcode is run in the assembly production line. Nowadays, the simple 2D barcode can be easily copied. Then, this paper proposes new technique to generate 2D barcode. The technique is multi encryption by chaotic equation that is very difficult to reproduce. In experimental design, 2D barcode can be used only one-time and can be recorded into decoding system to protect repeating. This paper has led to real benefit for Fresh Group company limited in Thailand.
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Network system engineering by controlling the chaotic signals using silicon micro ring resonator
(2012-10-15)
Shahidinejad, A.
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Nikoukar, A.
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Amiri, I. S.
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Ranjbar, M.
;
Shojaei, A. A.
We investigate nonlinear behaviors of light known as bifurcation and chaos within a nonlinear silicon microring resonator (SMRR). The research is used to controlling SMRR's behaviors such as chaos applicable in security coding systems. The variable parameters affect the bifurcation to be happened in smaller roundtrip among total round trip of 20000 or input power. Simulated Results show that rising of the nonlinear refractive indices, coupling coefficients and radius of the SMRR leads to descending in input power and round trips wherein the bifurcation occurs. As result, bifurcation or chaos behaviors are seen at lower input power of 44 W, where the nonlinear refractive index is n <inf>2</inf>=3.2×10 <sup>-20</sup> m <sup>2</sup>/W. Smallest round trips of 4770 and 5720 can be seen for the R=40 μm and κ = 0.1 respectively. The controlled chaotic signals from the SMRR are passing through a polarizer beam splitter to generate quantum binary codes which are used in wireless network communication. © 2012 IEEE.
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"No-CPU" chaotic robots: From classroom to commerce
(2010-03-01)
Sooraska, Pitikhate
;
Klomkarn, Kitdakorn
For more than a decade, chaotic signals have been adopted to generate gaits for robots via simple and effective chaotic circuits within or without CPUs. The signals are used to guide a robot to navigate chaotically. This type of robots is useful in many applications ranging from engineering education such as high school science projects to military de-mining tasks alike. Computer simulations using various choices of chaotic patterns reveal that the pattern of chaotic orbit generated by Chua's circuit is the best in the sense of wide area coverage, high availability of design documentation and easy circuit construction. Experimental results show that the chaotic robots described in this article are very promising for transforming several tasks in such devices as vacuum cleaners, lawn mowers, de-mining vehicles, and so on. This cost-effective utilization can be simply done by embedding the chaotic circuits into the target applications without CPUs. © 2006 IEEE.
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Dynamic of logistic model at fractional order
(2009-12-01)
Suansook, Yoothana
;
Paithoonwattanakij, Kitti
In this paper we have obtain the generalized form of the logistic model to arbitrary order using fractional calculus. The model is explained the population growth. The discrete version of the model have important role in studying the chaotic dynamic. The fractional calculus is feasible to evaluate the differential and integral of non integer order. This mathematical subject is helping fine tune analysis the chaotic properties of the logistic model. The numerical results show the Lyapunov exponent at various fractional orders. The positive Lyapunov exponent is indicate that the system is chaotic at fractional order. The periodic solutions of half fractional order are also present. ©2009 IEEE.

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