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best way to create entropy?

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

> On 10/16/12, JC Dill <jcdill.lists at 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.