Image Encryption Scheme Based on Double-Delay Reforming System
Pu Xi · Journal of Jilin University · 2014
To resolve the problem of typical characteristics of hyperchaos sequence with weak pseudo random,an algorithm based on double-delay reforming system is proposed. The sequence which produced by double-delay reforming system has larger Lyapunov exponent and better paseudo-random characteristics than that of the previous hyperchaos system. Without other combined pseudorandom sequences, only one total round of substitution and diffusion can meet good effect. Simulation result shows that the suggested algorithm satisfies the required performance tests such as high level security,large key space and acceptable encryption speed.