2 results listed
In this study a novel four dimensional (4D) chaotic system is introduced. To prove chaotic behavior of the system, time series and phase portraits are presented. A novel pseudo random number generator (PRNG) application of the chaotic system is realized to show the system is suitable for engineering applications like encryption and data hiding. In order to realize PRNG, the chaotic system is discretized with numerical methods. The next step is selection of different number of bits from different state variables obtained from the chaotic system. NIST 800-22 statistical tests, the highest international standard, are performed for the generated random numbers to prove the proposed PRNG has sufficient randomness and successful results are obtained.
International Conference on Advanced Technologies, Computer Engineering and Science
ICATCES
Sezgin Kaçar
F. YALÇIN
B. ARICIOĞLU
A. AKGÜL
In this study, a voice encryption application is realized by using a four dimensional (4D) chaotic system with single parameter. The main purpose of use of a single parameter chaotic system is reduction of computational load in order to run the voice encryption application on low performance hardware. Since the chaotic system is four dimensional, the system has four state variables and for every state variable different values of initial conditions can be used. This makes the key space length sufficiently long. In the application, the state variables are obtained with Runge-Kutta (RK4) method. The voice encryption is realized by XORing the obtained state variables with the voice data. The security performance of the voice encryption is proved by comparing the encrypted and original voice data in both time and frequency domain.
International Conference on Advanced Technologies, Computer Engineering and Science
ICATCES
Sezgin Kaçar
F. YALÇIN
B. ARICIOĞLU
A. AKGÜL