I was looking at the interaction of draft-kivinen-ipsecme-oob-pubkey and
IPSECKEY, since IPSECKEY has an algorithm number but oob-pubkey uses the
SubjectPublicKeyInfo that encodes the algorithm in the SPKI value
itself.

So first, if we were to fix this for IPSECKEY (and I'm not yet convinced
we are there yet, as we might end up with updating IPSECKEY due to other
issues we'll find over the next few months) we might consider allocating a 
special
algorithm number to signify this in the IKE Authentication Method registry at

http://www.iana.org/assignments/ikev2-parameters/ikev2-parameters.xhtml#ikev2-parameters-12

For instance, 255 :)

Then I noticed that in fact the registry is a two octet value, while in
the IPSECKEY record this is a one octet value:

https://tools.ietf.org/html/rfc4025#section-2.1

That's clearly a bug. Is it worth filing an ERRATA for this or should we
wait and see if we will replace IPSECKEY anyway?

Paul

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