Re: [openpgp] Version 1 image header bits that MUST be 0

Andrew Gallagher <andrewg@andrewg.com> Mon, 29 May 2023 09:07 UTC

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From: Andrew Gallagher <andrewg@andrewg.com>
In-Reply-To: <87lehy95ba.fsf@fifthhorseman.net>
Date: Mon, 29 May 2023 10:06:33 +0100
Cc: Paul Wouters <paul@nohats.ca>, "openpgp@ietf.org" <openpgp@ietf.org>
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References: <8211a864-3ce5-bb60-2aa8-6e73e82213ef@nohats.ca> <87lehy95ba.fsf@fifthhorseman.net>
To: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
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Subject: Re: [openpgp] Version 1 image header bits that MUST be 0
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On 8 May 2023, at 17:05, Daniel Kahn Gillmor <dkg@fifthhorseman.net> wrote:
> 
> As an alternate approach, i expect it would be more straightforward to
> deprecate these bits (and much of this flexibility) entirely.  The root
> of the issue is that there is too much unused extensibility here.  A
> simplifying approach might be:
> 
> - drop the Image Attribute Version registry
> 
> - drop the Image Attribute Encoding Format registry

- drop Image Attribute types

- deprecate User Attribute packets

I see no concrete use for them other than to bloat keys, frustrate distribution, and abuse keyservers for anonymous file sharing. Anything else can be achieved in a more straightforward manner by signing a document.

A