[clue-talk] Re: [CoLoCo] Random Number Generators

[Grant Johnson]

> I recall reading, some time ago, about external high entropy sources, one
> of which was a foil strip loosely suspended in a weak magnetic field,
> such that it could be disturbed by air currents, and maybe also pick up
> random electromagnet noise. Could be I'm mis-remembering a bit. But it
> got me wondering whether a low-cost USB entropy source is something
> that'd be easy to make. So I hit google, but unfortunately, got the usual
> google-pile of irrelevant pages having those terms, but not having
> anything to do with the topic.
>
> I did run across this article:
> http://www.codinghorror.com/blog/archives/000728.html
> which at least has some interesting discussion and links.
>
>   
One of my favorite sources of cheap external entropy is the sound 
card.   Often there is enough noise on the line input by itself, and if 
not, hook it to an AM tuner, especially between stations.