17 Dec
2003
17 Dec
'03
11:17 p.m.
1.C How about if we take the hiss that you find between stations on an FM receiver, and digitize them through a PC soundcard?
Hmm. And if an attacker discovers you're using this method, and decides to send out a signal on the same frequency? You might find your "random" numbers are suddenly all zeros... --- Jef
Band hop. Build a variable modulo counter and use its output to reset its modulo and hop the band around pseudo-randomly. Unless they know or stumble on the particular design you are using it will be very difficult to track. Since music, energy wise, approaches 1/f^2 it might be ok to even use the actual stations.