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From: ludo@gnu.org (Ludovic Courtès)
To: Danny Milosavljevic <dannym@scratchpost.org>
Cc: guix-devel@gnu.org
Subject: Re: /dev/urandom
Date: Wed, 11 Jul 2018 00:18:21 +0200	[thread overview]
Message-ID: <87muuypweq.fsf@gnu.org> (raw)
In-Reply-To: <20180710182211.75442f8b@scratchpost.org> (Danny Milosavljevic's message of "Tue, 10 Jul 2018 18:22:11 +0200")

Hello Danny,

Danny Milosavljevic <dannym@scratchpost.org> skribis:

> 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?

I’d be wary of introducing a static /dev/urandom.  It could do more than
we want, or we could leave it around in places where it shouldn’t be.

For reproducibility purposes, (gnu system vm) precomputes file system
UUIDs, for instance, instead of letting them be computed as a function
of /dev/urandom.  Dunno if a similar technique could be used here.

Otherwise, what about patching U-Boot so that the file above honors and
environment variable or something that would allow us to specify a seed?

Ludo’.

      parent reply	other threads:[~2018-07-10 22:18 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     ` /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 ` Ludovic Courtès [this message]

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