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Re: [openpgp] Put Signature in an Email's Header

Andrew Gallagher <andrewg@andrewg.com> Thu, 10 August 2023 08:44 UTC

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From: Andrew Gallagher <andrewg@andrewg.com>
In-Reply-To: <17566aae-8b29-4223-b641-26846f3d64f7@kuix.de>
Date: Thu, 10 Aug 2023 09:43:41 +0100
Cc: Andrew Gallagher <andrewg=40andrewg.com@dmarc.ietf.org>, Wiktor Kwapisiewicz <wiktor=40metacode.biz@dmarc.ietf.org>, IETF OpenPGP WG <openpgp@ietf.org>
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To: Kai Engert <kaie@kuix.de>
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Subject: Re: [openpgp] Put Signature in an Email's Header
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On 9 Aug 2023, at 09:32, Kai Engert <kaie@kuix.de> wrote:
> 
> On 08.08.23 19:09, Andrew Gallagher wrote:
>> I’d be wary of such a double-encapsulation, it feels fragile.
> 
> This is what we currently do when combining a signature and protected headers:
> 
> multipart/signed (application/pgp-signature)
>    multipart/mixed (protected-headers)
>        headers
>        payload
>    signature data
> 
> And the new suggestion is:
> 
> multipart/mixed
>    signature-as-a-header
>    multipart/mixed (protected-headers)
>        headers
>        payload
> 
> Given that both use two layers around the payload, why do you consider the new suggestion more fragile?

Sorry, I misunderstood your previous email, I thought you were introducing yet another encapsulation layer. I withdraw! :-)

A

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