Resumo

NUNEZ-PEREZ, R.F.. Atypical Synchronization of Multiple Uncoupled Chaotic Circuits and its Application in Encryption. Ing. invest. y tecnol. [online]. 2012, vol.13, n.4, pp.489-502. ISSN 2594-0732.

This paper shows experimentally that it is possible synchronize several uncoupled Lorenz identical circuits controlling only one parameter independently; registered asynchrony is competitive with that of a typical synchronization. Although there is a price to pay, since the chaotic dynamics decreases and in the case of encryption that must be compensated by the addition of another chaotic signal or some function as the convolution with the message itself. The frequency control pulses (synchronizers) for the parameter and its working cycle are selected experimentally to achieve minimal errors in the timing, and the procedure is experimentally verified using two applications of encryption and recovery of low frequency audio signals with random noise. Finally, more experimentation is needed on this atypical synchronization regarding the changes in pulse parametric control, electrical noise and instability of the components to apply it in chaotic encryption of voice and audio signals from multiple users.

Palavras-chave : Lorenz circuit; chaotic circuits typical; synchronization; chaotic encryption.