Re: [sidr] Validation reconsidered and X.509v3 extension OIDs

Stephen Kent <kent@bbn.com> Wed, 20 July 2016 17:50 UTC

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To: Tim Bruijnzeels <tim@ripe.net>
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From: Stephen Kent <kent@bbn.com>
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Date: Wed, 20 Jul 2016 13:50:35 -0400
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Subject: Re: [sidr] Validation reconsidered and X.509v3 extension OIDs
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Tim,

> Hi,
>
> So, to be clear I think this is the related text in section 9 of RFC 6487:
>
>     A new document will be issued as an update to this RFC.  The CP for
>     the RPKI [RFC6484] will be updated to reference the new certificate
>     profile.  The new CP will define a new policy OID for certificates
>     issued under the new certificate profile.
>
> And references in 6484 (CP) to 6487 should be reviewed and reference the validation-reconsidered instead (since it updates the profile), and we should have another OID instead of the one section 1.2. But there is no need to use a different OID for the RFC3779 extensions used. Right?
Thanks for reminding me of the text in section 9 of 6487. Immediately 
after the paragraph you cite the text says that an update to 6487 
requires establishing a timeline for a three phase transition process, 
something we have yet to discuss, and which is not yet part of the 
validation reconsidered I-D.

I believe that Rob suggested using a different OID for the 3779 
extensions because he wants currently-deployed code to continue to work 
with any software that relies on the cert validation procedure defined 
in 3779. A new OID for the extensions would allow software to know which 
type of processing is to be used when encountering a cert extension. So, 
for that reason, and to be consistent with the notion of a phased 
transition process, I believe there is a need for a new OID for the 3779 
extensions.

Steve