John E. Hershey has more than 30 years' experience in telecom security. The author or co-author of five advanced texts: "Hadamard Matrix Analysis and Synthesis: With Applications to Communications" and "Signal/Image Processing; The Elements of System Design; Data Transportation and Protection (Applications of Communications Theory); Perspectives in Spread Spectrum; and Doppler Applications in LEO Satellite Communication Systems," he was elected a Fellow of the IEEE "for contributions to secure communications" and currently teaches cryptography at Rensselaer Polytechnic Institute in Troy, New Y...