Abstract
Chaos-based encryption showed up as of late in the mid 1990s as a unique use of nonlinear dynamics in the chaotic administration. This paper introduces a digital image encryption scheme based on the mixture of chaotic system along with S-box substitution, utilizing a combination of two subsisting one-dimension (1D) chaotic maps (seed maps). Simulations and performance evaluations show that the system is able to engender many 1D chaotic maps with more immensely colossal chaotic range sand better chaotic behaviours compared with their seed maps and S-box substitution increases the diffusion in the process of encryption. To investigate its applications in multimedia security, a novel image encryption algorithm is proposed. Utilizing a same set of security keys, this algorithm is able to engender an exceptionally different encrypted image each time when it is applied to the same pristine image. Experiments and security analysis demonstrate the algorithm's excellent performance in image encryption and several attacks. Algorithm based on chaotic system and S-box substation is proposed.The algorithm worked faster than various existing algorithms.The encrypted images have almost zero correlation of adjacent pixels.Encrypted images have entropy values approximately equal to 8.
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