Author(s)

Michael François, Thomas Grosges, Dominique Barchiesi, Robert Erra

Group for Automatic Mesh Generation and Advanced Methods, Gamma3 Project (UTT-INRIA), University of.
Network & Information Security, Ecole Supérieure d’Informatique, Electronique, Automatique.

The paper describes a symmetric encryption algorithm based on bit permutations and using an iterative process combined with a chaotic function. The main advantages of such a cryptosystem is its ability to encrypt securely bit sequences and assuring confusion, diffusion and indistinguishability properties in the cipher. The algorithm is applied on the image encryption where the plain-image is viewed as binary sequence. The results of statistical analysis about randomness, sensitivity and correlation on the cipher-images show the relevance of the proposed cryptosystem.

Encryption; Image Encryption; Chaotic Function; Confusion; Diffusion; Indistinguishability

M. François, T. Grosges, D. Barchiesi and R. Erra, "Image Encryption Algorithm Based on a Chaotic Iterative Process," Applied Mathematics, Vol. 3 No. 12, 2012, pp. 1910-1920. doi: 10.4236/am.2012.312262.