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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Reposting with permisson<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Peter Bowen [mailto:pzbowen@gmail.com]
<br>
<b>Sent:</b> Saturday, November 14, 2015 1:31 PM<br>
<b>To:</b> Kirk Hall (RD-US)<br>
<b>Cc:</b> CABFPub (public@cabforum.org)<br>
<b>Subject:</b> Re: [cabfpub] Question 3 – Domain Validation pre-ballot<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Kirk,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thank you for the offer to forward comments to the group. Overall, I think that this is excellent work and I look forward to these becoming final. I agree that the current language
of Line J makes my comment moot. However, I do think there are a couple of other minor changes that would make the intent of validation clearer.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">In Line C, under (b), insert the words “or Affiliate of the CA” after “CA”. Many companies have different subsidiaries for different functions, so the Registrar and CA Operator
might not be the same legal entity, even if customers see them as the same.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">In Lines D, E, F, and G, replace "Confirming the Applicant’s domain ownership or control by" with "Confirming the Applicant’s authorization to obtain and manage certificates for
the Domain Namespace by”. This makes it clear that the purpose of the method is to confirm authorization and that Applicant does not have to be the same entity as the Domain Name Registrant.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">In Line B, insert “authorization, “ before “ownership” to reflect the change in D/E/F/G.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">It would also be good to clarify that the 6 months from ballot approval date is when CAs must cease to use non-compliant methods. CAs should be able to use any of the methods in
the ballot immediately upon approval. I think the ballot additionally should clarify if existing validations using a newly non-compliant method can be reused for 39 months (as per 3.3.1) or if CAs must cease relying upon the existing validations 6 months
from ballot approval.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Peter<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Thu, Nov 12, 2015 at 5:08 PM, <a href="mailto:kirk_hall@trendmicro.com">
kirk_hall@trendmicro.com</a> <<a href="mailto:kirk_hall@trendmicro.com" target="_blank">kirk_hall@trendmicro.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto"><b>Question 3 – Domain Validation pre-ballot</b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto"><b><u>Peter Bowen Comments</u></b>
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto"><span style="color:#002060"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto">Peter Bowen of Amazon did not submit specific new language, but posed the following comment about new Method No. 7 shown below:<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto"><b> </b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-left:.5in"><b>Proposal 3: In
<u>line J</u> of current draft (Method No. 7)</b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-left:.5in"><b> </b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-left:.5in">“In Item J, it suggests that the random token is only valid for a FQDN validation.
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-left:.5in"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-left:.5in">“I think DNS validation should be allowed for domain hierarchies in addition to specific FQDNs. A domain registrant should be able to choose to approve all FQDNs under
<a href="http://corp.example.com" target="_blank">corp.example.com</a> by adding a record for
<a href="http://corp.example.com" target="_blank">corp.example.com</a>.”<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-left:.5in"><b> </b><o:p></o:p></p>
<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Here is the current Ballot language for Method No. 7:</span><o:p></o:p></p>
<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> </span><o:p></o:p></p>
<p style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">“7. Having the Applicant demonstrate control over the requested FQDN by the Applicant making a change to information in a DNS record for an Authorization Domain Name
where the change is to insert a Random Value or Request Token; or “</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-left:.5in"><b> </b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto">I noted we had discussed before the problem of “<a href="http://kirkstore.shopping.com" target="_blank">kirkstore.shopping.com</a>” – Kirk might have control over the third level FQDN, but might not have
control over the SLDN (Base Domain) of <a href="http://shopping.com" target="_blank">
shopping.com</a>, so even though Kirk could demonstrate control for <a href="http://kirkstore.shopping.com" target="_blank">
kirkstore.shopping.com</a>, he should not use that to get a cert for <a href="http://shopping.com" target="_blank">
shopping.com</a>.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto">Doug Beattie thought that Peter might be misreading Authorization Domain Name, which is defined as follows:<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-left:.5in;text-autospace:none">
<b><span style="color:black">“Authorization Domain Name</span></b><span style="color:black">: The Domain Name used to obtain authorization for certificate issuance or a given FQDN. The CA may use the FQDN returned from a DNS CNAME lookup as the FQDN for the
purposes of domain validation. If the FQDN starts with a wildcard character, then the CA MUST remove all wildcard labels from the left most portion of requested FQDN. The CA may prune zero or more labels from left to right until encountering a Base Domain
Name <u>and may use any one of the intermediate values for the purpose of domain validation.</u>“</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-left:.5in;text-autospace:none">
<span style="color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-left:.5in;text-autospace:none">
<b><span style="color:black">“Base Domain Name</span></b><span style="color:black">: The portion of an applied-for FQDN that is the first domain name node left of a registry-controlled or public suffix plus the registry-controlled or public suffix (e.g. “<a href="http://example.co.uk" target="_blank">example.co.uk</a>”
or “<a href="http://example.com" target="_blank">example.com</a>”). For gTLDs, the domain
<a href="http://www.[gTLD">www.[gTLD</a>] will be considered to be a Base Domain. “</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-left:.5in;text-autospace:none">
<span style="color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;text-autospace:none"><b><u><span style="color:black">Questions for Discussion</span></u><span style="color:black">:
</span></b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;text-autospace:none"><b><span style="color:black"> </span></b><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;text-autospace:none"><span style="color:black">(1) Is Doug correct that the
<u>current</u> definition of Authorized Domain Name (see underlined text above) would already satisfy Peter’s suggestion that proving control of any FQDN by making a change to the DNS record for that FQDN is sufficient to get a certificate for any lower level
domain it contains, including the SLDN or Base Domain? If yes, are any changes needed?</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;text-autospace:none"><span style="color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;text-autospace:none"><span style="color:black">(2) More generally, do the members agree with Peter’s statement that “</span>A domain registrant should be able to choose to approve all FQDNs under
<a href="http://corp.example.com" target="_blank">corp.example.com</a> by adding a [DNS]record for
<a href="http://corp.example.com" target="_blank">corp.example.com</a>.” If not, do we need to change the definition of Authorization Domain Name to delete the language underlined above?<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;text-autospace:none"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;text-autospace:none"><b><u>To Peter Bowen</u></b>: If you want to comment on this issue, please email to me and I will post to the Public list.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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