A Novel Image Encryption Approach Using Polar Decomposition and Orthogonal Matrices


  • Oussama Noui Department of Physics, Faculty of Sciences of Matter, University of Batna1, Algeria
  • Amine Barkat Department of Electronics, Information, and Bioengineering, Politecnico di Milano, Italy
  • Assia Beloucif Institute of Hygiene and Industrial Safety, University of Batna2, Algeria




Encryption, security, digital image, orthogonal matrix, polar decomposition, information


Information security is one of the important issues in the information age, image encryption algorithms have been increasingly studied to guarantee the secure image transmission over the internet and through wireless networks. In this article, we propose a new approach for image encryption based on polar decomposition and orthogonal matrices. This scheme offers good confusion and diffusion qualities. The proposed algorithm is shown to be secure against important cryptanalytic attacks (statistical attacks, sensitivity dependence, differential attacks, brute force attacks...), theoretical analysis and computer simulations both confirm that it has a high security level.