linux-kernel - Re: Why does reading from /dev/urandom deplete entropy so much?

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Message-ID: <20071209161605.GX19691@waste.org>
Date:	Sun, 9 Dec 2007 10:16:05 -0600
From:	Matt Mackall <mpm@...enic.com>
To:	Marc Haber <mh+linux-kernel@...schlus.de>
Cc:	Eric Dumazet <dada1@...mosbay.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Adrian Bunk <bunk@...nel.org>, linux-kernel@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: Why does reading from /dev/urandom deplete entropy so much?

On Sun, Dec 09, 2007 at 01:42:00PM +0100, Marc Haber wrote:
> On Wed, Dec 05, 2007 at 03:26:47PM -0600, Matt Mackall wrote:
> > The distinction between /dev/random and /dev/urandom boils down to one
> > word: paranoia. If you are not paranoid enough to mistrust your
> > network, then /dev/random IS NOT FOR YOU. Use /dev/urandom.
> 
> But currently, people who use /dev/urandom to obtain low-quality
> entropy do a DoS for the paranoid people.

Not true, as I've already pointed out in this thread.

-- 
Mathematics is the supreme nostalgia of our time.
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