Date Added: May 2012
Secure message communication techniques, based on Spread Spectrum modulation (or message encryption scheme), use a spreading code (or an encryption key) for message security. The commonly used spreading codes or encryption keys are based on m-sequences and Gold codes. Gold sequences are preferred for many applications owing to their data hiding capabilities. The conventional techniques used for the generation of Gold codes use fixed feedback tapings and therefore can prove, sometimes, easy for a hacker to decode or jam the original information signal. A novel circuit for the generation of a Gold code sequences, wherein the feedback tapings change pseudorandomly, is presented in this paper.