Patent Document ID: 7672453
Application ID: 09642373
Patent Flag: 1

Claim One:
1. A method for encrypting digital data for transmission over a channel, where said digital data defines a symbol sample duration, said method comprising the steps of: delaying said digital data by at least one delay increment equal to one symbol sample duration, optionally divided by an integer, to thereby generate a plurality of time-sequential signal samples; providing a set of distortion encoding keys including at least one nonlinear transfer function; operating on each of said time-sequential signal samples by one of said keys which is a nonlinear transfer function, to thereby generate, at any instant, a plurality of distorted samples of said signal; summing said plurality of distorted samples of said signal, to thereby generate a distortion-encrypted signal; applying said distortion-encrypted signal to an input of said channel; extracting said distortion-encrypted signal from an output of said channel, to form an extracted distortion-encrypted signal; and decrypting said extracted distortion-encrypted signal.