[Cryptography] The world's most secure TRNG

[John Denker]

On 09/28/2014 04:27 AM, Bill Cox wrote:
> I have a quick question for you guys.  For a USB stick TRNG, would you
> rather pay ~$15 for a 100K-byte/second source of true entropy, or ~$30 for
> a 1M-byte/second source?

How about $1.08 for the whole thing, for a finished
product (not just the of materials), including labor
and including shipping?

  http://www.ebay.com/itm/USB2-0-Audio-Headset-Headphone-Earphone-Mic-Microphone-Jack-Converter-Adapter-XS-/390945793533?pt=US_Sound_Cards_Internal

Or pay $0.00 if your machine comes with a built-in
audio subsystem.

It's an audio device, so it comes with a documented 
standard interface.  Also the fact that it has an 
output comes in handy for calibration and for 
life-long quality-assurance checks.

It's as secure as anything you could build yourself.

The entropy delivery rate is high enough for all 
ordinary purposes.