From: Koen Holtman (koen@hep.caltech.edu)
Date: Wed Feb 14 2001 - 13:56:21 PST
I believe most of the camera noise is thermal noise inside the recording
CCD, so it would be a fairly good source of randomness.
Koen.
On Wed, 14 Feb 2001, Robert S. Thau wrote:
> Strata Rose Chalup writes:
>
> > Are there lower-wattage sources of random input for cryptographic key
> > generation to fall back on?
>
> A well-populated fishtank would do the job, one would imagine.
>
> (Incidentally, *any* webcam will have some random camera noise, even
> if the lens is just pointed at a white sheet --- I'm not sure I know
> the entropy of that noise, but it's probably suitable for some
> purposes... ).
>
> rst
>
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