Chaotic Image Encryption Using an Improved Vigenère Cipher and a Crossover Operator
摘要
In this article, we will explore a new technique for encrypting color images. This approach is based on the classical Vigenère technique which has been improved and adapted to image encryption. This approach involves the use of two substitution tables of the same size, generated from the chaotic maps. Then, a crossover operation is applied on the integrity of the vector leaving the substitution phase, this operation is controlled by a pseudo-random vector. The standard security tests applied to our technique proves the robustness and effectiveness of our approach against known attacks.