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[DNSOP] Re: [Ext] Persistence of DCV, including for Delegated DCV (for draft-ietf-dnsop-domain-verification-techniques)

Paul Hoffman <paul.hoffman@icann.org> Fri, 06 June 2025 21:39 UTC

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From: Paul Hoffman <paul.hoffman@icann.org>
To: Paul Wouters <paul@nohats.ca>
Thread-Topic: [DNSOP] [Ext] Persistence of DCV, including for Delegated DCV (for draft-ietf-dnsop-domain-verification-techniques)
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Date: Fri, 06 Jun 2025 21:38:58 +0000
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Subject: [DNSOP] Re: [Ext] Persistence of DCV, including for Delegated DCV (for draft-ietf-dnsop-domain-verification-techniques)
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On Jun 6, 2025, at 14:16, Paul Wouters <paul@nohats.ca> wrote:
> 
> 
>> On Jun 6, 2025, at 15:02, Erik Nygren <erik+ietf@nygren.org> wrote:
>> 
>> Following this discussion, I've taken a pass at proposing some updates to clarify the "purpose"
>> of domain validation (as suggested by Ben in PR #160 although I started with a new take on it)
>> as well as to clarify the difference between one-off validation and persistent validation.
>> See:
>> 
>> https://github.com/ietf-wg-dnsop/draft-ietf-dnsop-domain-verification-techniques/pull/172/files [github.com]
>>  
> 
> This looks good to me.

This is an OK start, but it would be better if the draft covered the actual security issues (on-path attackers) and dealt with time more carefully. Persistent validation doesn't need the token that is needed by the initial validation.

The new material still doesn't explain why introducing a new mechanism (intermediaries) should be part of a Best Current Practice RFC.

--Paul Hoffman

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