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In this paper, a novel image encryption scheme based on two rounds of substitution–diffusion is proposed. Two main objectives have guided the design of this scheme: (a) robustness against the most known type of attacks (statistical, chosen/known plaintext, ciphertext-only and brute force attacks) and (b) efficiency in terms of computational complexity (i.e., execution time reduction) in order to meet...
In this paper, we propose a new fast and secure scheme for image encryption based on a robust uniform chaotic pseudo-random generator. This generator is used to provide the control parameters of substitution and permutation. Many image encryption algorithms use fixed control parameters in the permutation and substitution stages, during the whole encryption process, which can be easily attacked. The...
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