Re: Generating a true random number?
Evil Pete (shipley@merde.dis.org)
Tue, 07 Jun 1994 09:08:43 -0700
>Another class of methods uses exogenous noise sources. For example, if
>you have an audio input, feed it noise and use the LSBs of the audio
>stream. Just a microphone in your office/lab should provide sufficient
>randomness. A slightly better source is an FM radio receiver with muting
>off and tuned to no station. For the truly paranoid, bias a semiconductor
>PN junction at the Zener point, amplify and digitize the noise, put a
>statistical monitor on it to make sure that the bit stream produced has
>the appropriate randomness, make several of these and XOR them together.
I have some code that uses the amp noise from the sound chip in my Sparc
if anyone wants a copy (or want to test it for me). I wrote it
while I was plaing with the sound chip on my sparc.
-Pete