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

John Levine <johnl@taugh.com> Mon, 12 May 2025 22:47 UTC

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From: John Levine <johnl@taugh.com>
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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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It appears that Ben Schwartz  <bemasc@meta.com> said:
>To be concrete: suppose an untrusted party shows up and says "Hey can I add a new TXT record to your zone?  It's not at any name you're using.".  Without DCV,
>this is potentially safe.  This party can't influence the behavior of the names you care about.  With DCV, this is totally unsafe.  So DCV introduces a
>(arguably) new assumption about DNS zone behaviors.

Um, OK.  Please add this TXT record at a name I am pretty sure you are not using.  I would never dream of sending
forged mail and pretending it was from you.

notben._domainkey TXT "v=DKIM1; h=sha256; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu7YaubcN8r5Jsj6NWlSda8Gs4eZFpYeFDRJcOd7ICfZvjhO44t7TDk/RX3GPi9IU6OQBnwIU1fz3MdIusgC7PjR2VhTRTSGmKzDtOTWE8oI0MF/Ppq6TORY0ZVi/ioDAH7E+bqyNj74TdPVWLLWnwk/htsJE1qCVGhXDkUZETKCWzH1MLYcsUORnGM2PfE" "CoTP2S+KmnraaK4hiLRPQ0bHeeeiK+NX61ymmoavPmAZkORx7bZRtabEMy75vZr/NyunCRUq/071hpIcIX84ztC8hNdC9rLT0Lejsv4hXCwsPSqZ7H0Be9wC0JyXkEbxdHq+EtzTVP9npik7HZ/QjSNwIDAQAB"

R's,
John

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