Chaos-based Confidentiality : Chaotic generators, and Chaos-based-Cryptosystems
Résumé
The security of image and video data has become increasingly important for many applications which demand both real-time performance and high level of security: private multimedia messages exchanged by portable devices over the wireless networks and sensitive data exchanged in wireless sensor networks, etc.
A new class of pseudo-random number generators (PRNGs) called chaotic PRNGs has appeared in the literature and has attracted much attention. Indeed, their characteristics such as ergodicity, sensitivity to the secret key and ease of implementation, make them very good candidates for use in information hiding and security systems such as: Keys generation, cryptosystems, steganography and watermarking systems or any system that needs random number.
Due, to their structures, which are more flexible whatever the block size and more robust against cryptanalysis, a variety of chaos-based cryptosystems has been introduced to protect the content of the transmitted images and videos.
In this talk, we give an overview of the state of the art of chaotic PRNGs and chaos-based cryptosystems and we describe some of our schemes already proposed.