[Sidrops] Re: Paul Wouters' No Objection on draft-ietf-sidrops-signed-tal-15: (with COMMENT)

Job Snijders <job@fastly.com> Wed, 15 May 2024 18:27 UTC

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From: Job Snijders <job@fastly.com>
Date: Wed, 15 May 2024 20:26:21 +0200
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To: Paul Wouters <paul.wouters@aiven.io>
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Subject: [Sidrops] Re: Paul Wouters' No Objection on draft-ietf-sidrops-signed-tal-15: (with COMMENT)
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Hi Paul,

Thanks for the review and your question. Jumping in as working group
participant.

On Wed, 15 May 2024 at 20:01, Paul Wouters via Datatracker <noreply@ietf.org>
wrote:

>
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
>
> I am not an rPKI expert, so this might be a dumb question. If Key A
> generates
> its CA, and then lets its CA expire, or the expiration time is smaller
> than the
> acceptance window, is there a way to recover from this? The rules seem to
> say a
> new Key B cannot be created because it wouldn't be accepted ?



The relaying parties have a local copy of the Trust Anchor’s public key
(this is called the Trust Anchor Locator). The TAL does not contain
expiration information, it only contain a URL where to download the Trust
Anchor certificate and the public key to verify the certificate.

If the Trust Anchor’s self-signed certificate expires, or the TAK’s EE
certificate expires, the TA operator can simply issue a new TA certificate
or new TAK that’s not expired.

If expiration happens during the acceptance window, the whole process needs
to start anew, a new TAK for B would need to be issued.

Does this help clarify?

Kind regards,

Job

>