OpenPGP sig notations - IANA registry vs. seen-in-the-wild

[David Shaw]

On Jan 25, 2010, at 6:18 PM, Robin H. Johnson wrote:

> The RFC's describe the creation of a registry, but the most I can find
> is an empty one:
> http://www.iana.org/assignments/pgp-parameters/pgp-parameters.xhtml#pgp-parameters-6
> 
> ===
> 10.2.2.1.  Signature Notation Data Subpackets
> ... Notations contain a user space that is completely unmanaged and an IETF space.
> ===
> 
> 1. Are there ANY IETF-registered notations?

No.

> 2. I'm also looking for seen-in-the-wild notations, esp. common ones.

There are a whole bunch of "COMMENT" out there, which would be an illegal notation (not registered with IANA, and does not contain a '@').  Legal ones include preferred-email-encoding at pgp.com and pka-address at gnupg.org.  I'm sure there are others.

David