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A New Image Encryption Scheme for Secure Digital Images Based on Combination of Polynomial Chaotic Maps

In recent times, research on image encryption using chaotic systems has emerged. However, some of the proposed schemes still hinder the system performance and security. In this study, we introduce an efficient image encryption scheme based on pixel bit and combination of polynomial chaotic maps with variable initial parameters. The algorithm takes advantage of the best features of chaotic maps combined with the pixel value bits. The initial parameters and the keystream employed in the encryption process are generated from two chaotic maps. Simulation results and analyses both confirm that the new algorithm possesses high security with less computation for practical image encryption.