From: Leo Famulari <leo@famulari.name>
To: Danny Milosavljevic <dannym@scratchpost.org>
Cc: guix-devel@gnu.org
Subject: Re: /dev/urandom
Date: Tue, 10 Jul 2018 18:40:20 -0400 [thread overview]
Message-ID: <20180710224020.GA32066@jasmine.lan> (raw)
In-Reply-To: <20180710205843.68793bed@scratchpost.org>
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On Tue, Jul 10, 2018 at 08:58:43PM +0200, Danny Milosavljevic wrote:
> It writes an image file. Since that image is later written to flash storage
> (by the user), the program randomizes the data in order to increase longevity.
> Then it stores the random data used as well.
I see. Like Ludo and Mark, I think we should avoid doing tricky things
with urandom.
Could /dev/zero work here? Does it use urandom once, to get a seed, or
does it read urandom repeatedly, expecting different values each time?
Also, I wonder if Guix users would want reproducibility here instead of
longer-lived NAND storage.
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next prev parent reply other threads:[~2018-07-10 22:40 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-10 16:22 /dev/urandom Danny Milosavljevic
2018-07-10 18:28 ` /dev/urandom Leo Famulari
2018-07-10 18:58 ` /dev/urandom Danny Milosavljevic
2018-07-10 22:40 ` Leo Famulari [this message]
2018-07-10 18:43 ` /dev/urandom Mark H Weaver
2018-07-11 14:17 ` /dev/urandom Danny Milosavljevic
2018-07-11 15:07 ` /dev/urandom Vincent Legoll
2018-07-11 15:50 ` /dev/urandom Danny Milosavljevic
2018-07-11 16:34 ` /dev/urandom Vincent Legoll
2018-07-10 22:18 ` /dev/urandom Ludovic Courtès
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