COHABITATION OF FIBONACCI AND GALOIS MODES IN ONE LINEAR FEEDBACK SHIFT REGISTER

A linear feedback shift register (LFSR) is the basic element of pseudo-random generators used to generate a sequence values for stream cipher. It consists several cells; each cell flip-flop and function. The function polynomial function; this has degree equal number cells in register. elements are connected other two different ways, either Fibonacci mode or Galois mode. In work, we propose realization specific which cohabitation these modes (Fibonacci Galois) same function, will be controlled by random selection mode, based on chaotic logistics map. This gave better results compared registers with separate modes.