Determination of the parameters for a Lorenz system and application to break the security of two-channel chaotic cryptosystems

作者：Orue A B; Fernandez V; Alvarez G; Pastor G; Romera M; Li Shujun; Montoya F^*

来源：Physics Letters A, 2008, 372(34): 5588-5592.

DOI：10.1016/j.physleta.2008.06.066

• secure communication
• cryptanalysis
• synchronization
• Lorenz chaotic system

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.

• 出版日期2008-8-18