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Date:      23 Sep 2002 00:15:01 -0700
From:      swear@attbi.com (Gary W. Swearingen)
To:        Doug Barton <DougB@FreeBSD.org>
Cc:        doc@FreeBSD.org, markm@FreeBSD.org
Subject:   Re: Another project: rndcontrol
Message-ID:  <01sn019nyi.n01@localhost.localdomain>
In-Reply-To: <3D8EA8BC.59D0B10C@FreeBSD.org>
References:  <3D28AC09.9AD48DF4@FreeBSD.org> <3D8EA8BC.59D0B10C@FreeBSD.org>

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Doug Barton <DougB@FreeBSD.org> writes:

> I put up a page for this project at
> http://people.freebsd.org/~dougb/randomness.html
> 
> Comments or suggestions are welcome.
...

The page seems to imply that /dev/random outputs (high quality)
pseudo-random numbers while random(4) seems to imply that they are
not pseudo-random.

If it's not pseudo-random, I'd like to see some words about how truly
random it can be.  Can it output 100 zeros in a row, like a true random
number generator can?  (Or other behavior that seems non-random in the
sort term.)  Or does it have guarantees to seem random at small sample
sizes too, like a good pseudo-generator does?  Are they guarantees or
just extreme probabilities?  For some purposes, numbers that seem
random can be more useful than numbers that are random.

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