A chaos-based image encryption algorithm using alternate structure

  title={A chaos-based image encryption algorithm using alternate structure},
  author={Leo Yu Zhang and Chengqing Li and Kwok-Wo Wong and Shi Shu and Guanrong Chen},
  journal={Science in China Series F: Information Sciences},
Combined with two chaotic maps, a novel alternate structure is applied to image cryptosystem. In proposed algorithm, a general cat-map is used for permutation and diffusion, as well as the OCML (one-way coupled map lattice), which is applied for substitution. These two methods are operated alternately in every round of encryption process, where two subkeys employed in different chaotic maps are generated through the masterkey spreading. Decryption has the same structure with the encryption… CONTINUE READING
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