Real-Time Secure Multimedia Communication System Based on Chaos Theory

Abstract

Abstract. We propose a novel block-based symmetric encryption system based on an n-array of independently iterated chaotic logistic maps with global and local feedback as a diffusion process. Local feedback represents the temporal evolution of a single map, while global feedback represents the temporal evolution of the whole system (cross-map evolution). For security, the cryptosystem periodically modifies its internal configuration using a three-level random perturbation scheme, one at system-key (reset operation) and two at map array level (to increase the chaotic cycle length of the system). An analysis of the proposed scheme regarding its vulnerability to attacks, statistical properties and implementation performance is presented. To the best of our knowledge we provide a simple and secure scheme with the fastest software implementation reported in the literature.

Improving chaos-based pseudo-random generators in finite-precision arithmetic

“…Recently, chaos theory has found numerous applications in technical and engineering problems including secure data transfer and processing [1][2][3][4][5][6][7][8][9][10][11]. Topological mixing and sensitivity of chaotic systems allow developing cryptographic primitives for high-performance and secure communication systems [12,13]. Usually, chaos-based stream encryption schemes are based on pseudo-random number generators (PRNG) [14,15].…”