nanog mailing list archives

Re: best way to create entropy?


From: JC Dill <jcdill.lists () gmail com>
Date: Thu, 18 Oct 2012 08:51:03 -0700

On 16/10/12 8:06 PM, Jimmy Hess wrote:

On 10/16/12, JC Dill <jcdill.lists () gmail com> wrote:
You might want to take a look at:
http://www.lavarnd.org/news/lavadiff.html

It's interesting...  though Lava lamps require heat to work, so not
necessarily energy efficient.   In theory, you shouldn't really need
the lava lamp part.   Just the digital camera  part..

You didn't read the whole page.  On the right side:

our LavaRnd^tm
Spelled *LavaRnd*, mixed case with 2 a's
Reference implementation uses lens-capped digital cameras to produce random numbers. Directly produces cryptographically sound <http://www.lavarnd.org/faq/crypto_sound.html> random numbers. A single camera image frame can typically produce between 340 and 1420 bytes bytes of random numbers.



jc



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