A novel hybrid encryption algorithm based on chaos and S-AES algorithm

In this study, a novel chaos-based hybrid encryption algorithm design for secure and effective image encryption is presented. To design the algorithm, the Zhongtang chaotic system has been selected because of its rich dynamic features and its dynamical analysis is performed. On the base of this system, a new chaos-based random number generator (RNG) is developed and usefulness of the designed RNG in an encryption process is shown over NIST 800-22 randomness tests. S-Box generation algorithm is designed, and the performance tests of S-Box are realized. By using the designed RNG and S-Box generation algorithms, the new hybrid image encryption algorithm based on AES (CS-AES) is developed. Image encryption applications are performed for comparison with other encryption algorithms in the literature to show its security level and efficiency. Security and performance analyses are made, and results are evaluated. So, it is proved that the proposed CS-AES algorithm is more secure and effective.

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