Encryption algorithm based on double chaos system with mutual feedback

Abstract

In order to increase the security of the low dimensional chaotic encryption system while not affecting the performance,a composite chaotic encryption system based on Logistic mapping and Tent mapping was presented.Firstly,the secret-key sequences were generated based on two mapping with mutual feedback,which was used to encrypt the plaintext;at the same time,the number of chaotic iterations was changed through cipher-feedback,and the iterative process has certain randomness.The results show,compared with single Logistic chaotic encryption,the algorithm not only has a large key space,high encryption intension and good operation efficiency of low dimensional chaotic encryption system,but also can resist brute-force attack,statistical attack and phase diagrams attack effectively.