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Secure communication using a compound signal from generalized synchronizable chaotic systems. (English) Zbl 0933.94023

Summary: By considering generalized synchronizable chaotic systems, the drive-auxiliary system variables are combined suitably using encryption key functions to obtain a compound chaotic signal. An appropriate feedback loop is constructed in the response-auxiliary system to achieve synchronization among the variables of the drive-auxiliary and response-auxiliary systems. We apply this approach to transmit analog and digital information signals in which the quality of the recovered signal is higher and the encoding is more secure.

MSC:

94A60 Cryptography
37N99 Applications of dynamical systems
94A12 Signal theory (characterization, reconstruction, filtering, etc.)
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