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From: Christopher Baines <mail@cbaines.net>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: 53901@debbugs.gnu.org
Subject: [bug#53901] [PATCH] publish: Sign only normative narinfo fields.
Date: Wed, 09 Feb 2022 18:29:10 +0000	[thread overview]
Message-ID: <87leyjevpk.fsf@cbaines.net> (raw)
In-Reply-To: <20220209175224.26851-1-ludo@gnu.org>

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Ludovic Courtès <ludo@gnu.org> writes:

> A consequence is that a mirror operator who’d like to, say,
> remove some of the compression methods cannot do that, unless they
> are in a position to resign narinfos.
>
> This patch fixes it by computing the signature over the normative
> fields only (plus the “Deriver” field, although it’s not strictly
> necessary).  The result looks like this:

...

> Notice that URL/Compression come after the signature.
>
> I added a test to ‘tests/substitute.scm’ to be entirely sure
> that (guix narinfo) handles these correctly.
>
> Thoughts?

This sounds good to me.

Going back to talk of enabling zstd substitutes on
bordeaux.guix.gnu.org, this approach will be really helpful, as it means
it's something the nar-herder can do, without needing the signing key.

Also, at some point, it would be good to move narinfo-string out to
(guix narinfo), which would allow for the build coordinator to use it,
rather than it's own implementation.

Thanks,

Chris

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  reply	other threads:[~2022-02-09 18:52 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-09 17:52 [bug#53901] [PATCH] publish: Sign only normative narinfo fields Ludovic Courtès
2022-02-09 18:29 ` Christopher Baines [this message]
2022-02-09 21:49   ` Ludovic Courtès
2022-02-10  9:00 ` pukkamustard
2022-02-10 21:09   ` Ludovic Courtès
2022-02-11 10:30     ` pukkamustard
2022-02-14 10:29 ` bug#53901: " Ludovic Courtès

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