OGY, chaotic scrambling

A few years back i ran thru a paper emanating from a navy labs researcher (i think the name was Peccora) about using synchronised chaotic signal generators as a signal scrambling/encrytpion scheme. Has there been any kind of progress in this line of work, practical applications ? Answer on C4i-pro or directly email to Denholl@ceram.fr L. Den-Hollander. OIT engineer.