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Re: [dns-privacy] [Ext] DS Hacks

Ben Schwartz <bemasc@google.com> Fri, 06 August 2021 19:05 UTC

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From: Ben Schwartz <bemasc@google.com>
Date: Fri, 06 Aug 2021 15:05:05 -0400
Message-ID: <CAHbrMsDzuXV7EbdPyNSWeKj0pei4BE2JhnOAe+GrVmDQFUZTMw@mail.gmail.com>
To: Ilari Liusvaara <ilariliusvaara@welho.com>
Cc: DNS Privacy Working Group <dns-privacy@ietf.org>
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Subject: Re: [dns-privacy] [Ext] DS Hacks
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The NSEC and NSEC3 records are supposed to work exactly as usual.  I didn't
provide any examples of NSEC3 because I didn't dare to attempt to write
NSEC3 records by hand.

I think you're right, and the NSEC examples are wrong.  Would you kindly
review this change to fix them:
https://github.com/bemasc/ds-glue/pull/1/files ?

Thanks,
Ben

On Fri, Aug 6, 2021 at 2:44 PM Ilari Liusvaara <ilariliusvaara@welho.com>
wrote:

> On Fri, Aug 06, 2021 at 11:21:35AM -0400, Ben Schwartz wrote:
> > Hi DPRIVE.  I've written this up as a proper I-D at
> > https://datatracker.ietf.org/doc/html/draft-schwartz-ds-glue-00.  Please
> > review.
> >
> > In addition to the precise description of how to extend "DS" in this way,
> > there's also some text explaining how this interacts with DANE and PKI
> > authentication, making creative use of NSEC for performance.
>
> I am confused about the NSEC parts.
>
> - Usually NSEC lists the next name and present types for current name.
> - In this draft, it seems to be  list of types that are not present.
> - In this draft, I do not see any explanation on how the name in the
>   NSEC record should be set. In the examples, it seems to be the set
>   to full owner name.
> - The draft mentions NSEC3 too, but as far as I can see, no
>   explanation or examples of its use.
>
>
>
> -Ilari
>
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