Chaos synchronization using non-linear observers with applications to cryptography

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dc.contributor.author Belhadjoudja, Mohamed Camil
dc.contributor.other Tadjine, Mohamed, Directeur de thèse
dc.contributor.other Chakir, Messaoud, Directeur de thèse
dc.date.accessioned 2022-04-05T13:06:29Z
dc.date.available 2022-04-05T13:06:29Z
dc.date.issued 2021
dc.identifier.uri http://repository.enp.edu.dz/jspui/handle/123456789/10491
dc.description Mémoire de Projet de Fin d’Études : Automatique : Alger, École Nationale Polytechnique : 2021 fr_FR
dc.description.abstract The subject of this thesis is the synchronization of chaotic systems using non-linear bservers, with applications to cryptography. I present in my thesis a general method to improve the performance of some observers with unknown inputs. I also develop a method to improve the frequency characteristics of chaotic systems such as the Rossler system and the Lorenz system. I also build modifications of a twisting observer for systems with time delay. Among these modifications, there is a method that allows us to consider any unknown input of a system in triangular form as being a fictitious state, which allows us to use state observers for the estimation of an unknown input. I construct also the notion of higher-adaptive-order sliding mode observers. I also present a countermeasure using ANFIS observers and an improved Lorenz system facing an acoustic cryptanalysis attack against RSA, then I combine the chaos theory with the lattice theory to generate new problems in post-quantum cryptography fr_FR
dc.language.iso en fr_FR
dc.subject Chaos theory fr_FR
dc.subject Cryptography fr_FR
dc.subject Nonlinear observers fr_FR
dc.subject Chaos synchronization fr_FR
dc.subject Lattices fr_FR
dc.title Chaos synchronization using non-linear observers with applications to cryptography fr_FR
dc.type Thesis fr_FR


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