Optical Cryptography

chill writes: "In Cryptonomicon, Neil Stephenson wrote about Bell Labs' research into using static, or chaotic signals to mask communications. A message would be generated, then the signal masked in noise. Someone on the other end would subtract out the noise to get the signal. Works great if both ends have the exact same noise. Now, Jia-ming Liu, professor of electrical engineering at UCLA, is giving a presentation on doing essentially the same thing using OC-48 (2.5 Gbps) optical circuits. The presentation will be at the upcoming Optical Fiber Communications Conference and Exhibit. There is an article covering this and some other nice advances in optical over in Wired."

Comments

The same noise ... old folks can relate

[Zero__Kelvin]

"Someone on the other end would subtract out the noise to get the signal. Works great if both ends have the exact same noise."

I know some older folks who think that two people with "Metallica - Injustice for All" have the same noise. Is this what they are referring to here? &^}

But seriously, if two people have 'the same noise' and use it to decrypt, it can't possibly be considered noise. It become a signal. No two ways about it. Think people ... think!