Secure Communication Based on Chaotic Cipher and Chaos Synchronization
Maricela Jiménez Rodríguez, R. Jaimes-Reátegui, Alexander N. Pisarchik · The interdisciplinary journal of Discontinuity Nonlinearity and Complexity · 2012
We proposed a secure communication system, which combines two different techniques of chaotic cryptography: chaotic cipher based on the logistic map for information diffusion, and chaos synchronization of two coupled R¨ossler oscillators for information confusion. The system contains two channels, one for synchronization and another for information transmission. Using the chaotic logistic map, a message is encrypted into one of the variables of the R¨ossler oscillator in the transmitter and sent to the receiver via the communication channel, while the Rossler oscillators are synchronized via the synchronization channel by another variable. Due to excellent confusion and diffusion properties, both exploiting important properties of chaos, the proposed communication system is extremely secure and fast enough to provide communication in real time.