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Determination of the Parameters for a Lorenz System and Application to Break the Security of Two-channel Chaotic Cryptosystems

Abstract

This Letter describes how to determine the parameter of the chaotic Lorenz system used in a two-channel cryptosystem. First the geometrical properties of the Lorenz system are used to reduce the parameter search space. Second the parameters are exactly determined - directly from the ciphertext - through the minimization of the average jamming noise power created by the encryption process

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Last time updated on 17/04/2020

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