[141755] in cryptography@c2.net mail archive
Re: very high speed hardware RNG
daemon@ATHENA.MIT.EDU (=?UTF-8?Q?Ivan_Krsti=C4=87?=)
Sun Jan 4 20:46:42 2009
Cc: Cryptography List <cryptography@metzdowd.com>
From: =?UTF-8?Q?Ivan_Krsti=C4=87?= <krstic@solarsail.hcs.harvard.edu>
To: Jerry Leichter <leichter@lrw.com>
In-Reply-To: <D3700648-8103-4190-94F7-24C5461C03BA@lrw.com>
Date: Sun, 4 Jan 2009 00:30:05 -0500
On Dec 30, 2008, at 5:11 PM, Jerry Leichter wrote:
> This is a highly chaotic process, and after a short time, you see a =20=
> completely random-looking dispersion of dye through the liquid. =20
> Present this to someone and any likely test will say this is quite =20
> random. But ... if you slow turn the inner cylinder backwards - =20
> "slowly", for both directions of turn, depending on details of the =20
> system - the original line of dye miraculously reappears.
(Laminar flow: <http://www.youtube.com/watch?v=3Dp08_KlTKP50>.)
--
Ivan Krsti=C4=87 <krstic@solarsail.hcs.harvard.edu> | http://radian.org
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