From: Danny Milosavljevic <dannym@scratchpost.org>
To: Leo Famulari <leo@famulari.name>
Cc: guix-devel@gnu.org
Subject: Re: /dev/urandom
Date: Tue, 10 Jul 2018 20:58:43 +0200 [thread overview]
Message-ID: <20180710205843.68793bed@scratchpost.org> (raw)
In-Reply-To: <20180710182809.GA13244@jasmine.lan>
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Hi Leo,
On Tue, 10 Jul 2018 14:28:09 -0400
Leo Famulari <leo@famulari.name> wrote:
> On Tue, Jul 10, 2018 at 06:22:11PM +0200, Danny Milosavljevic wrote:
> > Hi,
> >
> > u-boot tools/sunxi-spl-image-builder.c reads from /dev/urandom .
> >
> > For reproducibility I'd like this to be a static file. Do we already have one
> > for this purpose?
>
> You could use /dev/zero. What does the program do with the random data?
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.
See http://soc.yonsei.ac.kr/Abstract/International_journal/pdf/106_Data%20Randomization%20Scheme%20for%20Endurance%20Enhancement%20and%20Interference%20Mitigation%20of%20Multilevel%20Flash%20Memory%20Devices.pdf
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next prev parent reply other threads:[~2018-07-10 18:58 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 ` Danny Milosavljevic [this message]
2018-07-10 22:40 ` /dev/urandom Leo Famulari
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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