A random number generator is proposed based on a theorem about existence of chaos in fixed point iteration of xn = cot(xn−1). Digital computer simulation of this function iteration exhibits random behavior. A method is proposed to extract random bytes from this simulation. Diehard and NIST test suite for randomness detection is run on this bytes, and it is found to pass all the tests in the sui...

Corresponding Author: Thamizhchelvy, K. Faculty of Computing, Sathyabama University, Chennai, India Email: [email protected] Abstract: An Efficient Image Generation Algorithm is proposed. It generates Message Authentication Image (MAI) by using Fractals and chaos theory. The fractal images are generated by using Iterated Function System (IFS) techniques. We implemented and generated the f...

* This work was supported in part by Dean of the Faculty of Electronics and Information Technology, Warsaw University of Technology, under grant No. 503 “G”/1035/263/9. Abstract The paper presents the fully integrated design of the Wien-bridge chaos generator with the piecewise linear element built of MOS transistors. The circuit is implemented using SC technique. It is shown that this techniqu...

In addition to exhibiting a rich variety of bifurcation and chaos via tuning parameters, a chaotic system introduced by Sprott can be modeled and realized with a fixed main system block and many different changeable nonlinear function blocks such as piecewise-linear function, cubic function and other trigonometric functions. This system is very suitable for implementing a programmable chaos gen...

Discrete time chaos based true random number generators are lightweight cryptographic primitives that offer scalable performance for the emerging low power mobile applications. In this work, a novel design method for discrete time chaos based true random number generators is developed using skew tent map as a case study. Optimum parameter values yielding maximum randomness are calculated using ...

M.J. Feigenbaum has shown that all systems that exhibit a period doubling route to chaos share a common scaling function, such that δ = (V2 − V1) / (V3 − V2 ) = 4.669... This value, δ , is called "Feigenbaum's delta." A current driven by a function generator, traveling through a resistor, inductor, and a diode, acts as a driven nonlinear electrical oscillator, and is shown to exhibit a period d...

We propose and experimentally demonstrate a new chaos based opto-electronic secure communication system using voltage control oscillator. The chaotic signal has been generated using a modified electronic circuit of the logistic map. The output of the chaos generator is translated to a chaotically varying instantaneous frequency of the voltage controlled oscillator (VCO). The proposed technique ...