A new image encryption scheme based on a chaotic function

Authors:
M. François;T. Grosges;D. Barchiesi;R. Erra
Affiliations:
Group for Automatic Mesh Generation and Advanced Methods (Gamma3 UTT-INRIA), University of Technology of Troyes, 12 rue Marie Curie - BP 2060 - Troyes Cedex 10010, France;Group for Automatic Mesh Generation and Advanced Methods (Gamma3 UTT-INRIA), University of Technology of Troyes, 12 rue Marie Curie - BP 2060 - Troyes Cedex 10010, France;Group for Automatic Mesh Generation and Advanced Methods (Gamma3 UTT-INRIA), University of Technology of Troyes, 12 rue Marie Curie - BP 2060 - Troyes Cedex 10010, France;Department of Network & Information Security, Ecole Supéérieure d'Informatique, Electronique, Automatique (ESIEA), 9 rue Vésale, Paris 75005, France
Venue:
Image Communication
Year:
2012

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Abstract

In recent years, several methods of secure image encryption were studied and developed through chaotic processes or functions. In this paper, a new image encryption scheme based on a coupling of chaotic function and xor operator is presented. The main advantages of such a method are the abilities to produce a large key space to resist brute-force attacks, and to encrypt securely images with any entropy structure assuring indistinguishability, confusion and diffusion properties in the corresponding cipher-images. The results of several statistical analysis about randomness, sensitivity and correlation of the cipher-images show that the proposed cryptosystem is efficient and secure enough to be used for the image encryption and transmission. Moreover, the implementation of the corresponding algorithm is easy and only integers are used.