Random chaotic dynamical systems group and stream cipher algorithms

Abstract

The characteristics of the existing cipher algorithms for chaotic system were briefly analyzed in this paper.In order to provide a more effective encryption technique,the concept of random chaotic dynamical systems group was given.The random chaotic systems group can generate complex chaotic systems sequence under given conditions.Therefore,a stream cipher algorithm based on the random chaotic dynamical systems group was presented directly.Its encryption process could be influenced by secret keys,plaintext and specialty of chaotic systems group.Compared with other algorithms,the algorithm has been proved of higher security.The results of experiments show stream cipher algorithm based on the random chaotic dynamical systems group is easy to realize.Meanwhile,it has been tested with good encryption result and large secret space.