Determination of the parameters for a Lorenz system and application to break the security of two-channel chaotic cryptosystems |
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| Authors: | AB Orue G Alvarez M Romera F Montoya |
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| Institution: | a Instituto de Física Aplicada, CSIC, Serrano 144, 28006 Madrid, Spain
b Fachbereich Informatik und Informationswissenschaft, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany |
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| 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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| Keywords: | 05 45 Ac 47 20 Ky |
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