Cryptage chaotique des images et de texte.

Abstract

With the rapid growth of digital image usage in many applications, it is important to protect confidential image data from unauthorized access and this is ensured by cryptography. In this thesis, we study the possibility of using chaos, starting from its different properties and its specific behavior, for the chaotic encryption / decryption of images and text. We study two methods, the first based on the Baptista method and the second using the logistic map and the linear congruential generator.