[cabfpub] Public Minutes of CA/B Forum Teleconference May 28, 2015
Dean_Coclin at symantec.com
Sun Jun 14 22:12:11 UTC 2015
Public release of Minutes May 28, 2015
Attendees: Atsushi Inaba, Atilla Biler, Ben Wilson, Billy VanCannon, Bruce
Morton, Connie Enke, Dean Coclin, Doug Beattie, Gerv Markham, Jeremy Rowley,
Jody Cloutier, Kubra Zaray, Mads Henriksveen, Mat Caughron, Patrick Tonnier,
Peter Miscovic, Rick Andrews, Robin Alden, Ryan Sleevi, Sissel Hoel, Tim
Hollebeek, Tim Shirley, Volkan Nergiz, Wayne Thayer
1. Minutes of 14 May meeting were approved. These will be posted to
the public list.
2. Ballot 149: Kirk was not on the call. No update.
Legal Existence by Attorney Opinion Letter (proposed ballot 150): Jeremy
had sent out this proposed ballot which Ryan commented on. Ryan said he was
satisfied with the responses for now.
Optional OIDs for IV (proposed ballot 151): Dean is working on a ballot with
Jeremy and will send out shortly
Domain Validation Ballot: still in the working group. Jeremy said there are
2 types of ways to form the domain name you are validating: (1) by either
taking the FQDN and removing parts/labels until you get down to whatever
name you want to validate or (2) by only validating the base domain. There
has been a debate on which one to do. For example mail.secure.example.com or
example.com. You can validate by sending to secure.example.com or by pruning
to example.com. The working group feels that they prefer the "pruning"
method to make it consistent but wanted to run it by the broader forum for
input. Jeremy will circulate this by email to the forum. Robin said he
suggested an amendment to the proposal but hadn't seen it incorporated.
Jeremy will review again.
3. EV Wildcards: A discussion around what the info in EV certs should
represent began. Dean started by saying the 2 options were that the info
should represent the owner of the website business you are communicating
with or the entity hosting the website (i.e. Akamai). Ryan said the EV
guidelines are vague as to what piece of information you should be
validating. He went on to give examples of the different parties at play in
hosting a website: domain holder (actual registrant or someone from say a
whois anonomyzing service), entity operating name servers, webhosting
entity, Intermediate DNS holder/CDN provider (i.e. Cloudflare), design firm
for website, and payment provider for website. Hence it is a complex
question. In the context of wildcards, who is an EV certificate saying
something about? This is where some of the concern comes in. Hence we need
to decide who we want the information in an EV certificate to say about.
Then we can discuss how wildcards play a role. Gerv agreed there are
multiple parties that could demonstrate domain control but said the party of
interest is the business owner, who would have contracts with the other
parties. Hence he felt that the name of the party in an EV cert should be
the entity responsible for the content in the site. Dean agreed and said
this is all about establishing identity. Jeremy disagreed and said it should
be about the owner of the private key which could be a CDN and they should
be named in the cert. Rick said what good is a cert that says "Akamai.com"
for a business that is not Akamai? Jeremy said it tells you who owns the
private key. Gerv asked how is that useful? Ryan said this information is
not consistently presented to users across browsers. He also cited an
example of someone using AppEngine where theoretically Google could see all
communication since they terminate the SSL session. Someone might want to
know that. Gerv said it is impractical for certs to list all the parties
that Ryan outlined above and reiterated that the info should be the one that
is most useful to users of that website. Jeremy disagreed with that
premise. Wayne questioned that for example hundreds of thousands of sites
hosted by GoDaddy should be issued to GoDaddy? That didn't make sense. Bruce
said when the guidelines were created, it was to give the user strong
evidence that they were on the site they thought they were. Jeremy agreed
and hence hasn't embraced wildcards on EV. Dean said that when you call your
bank today, they may outsource the call center to a third party. They don't
necessarily disclose this and for most people it's not an issue because you
know you called your bank on the number they gave you. Hence the 3rd party
isn't relevant. The bank has a contractual agreement with the 3rd party and
that should cover you. How does it help you to know that info in the SSL
certificate? Ryan agreed but says it does (rarely) come up with some users.
He also said one of the arguments against wildcard certs, for example,
*.appspot.com, shouldn't be allowed for EV because now you are communicating
that all of the certs are operated by appspot. However, appspot could get
EV certs for each of those domains that indicate you're communicating with
appspot, which may not be what you expect." Jeremy said that would be true
in any case. Ryan said it is true but it may not be what you expect. Tim H
said he also would like to clarify what's in an EV cert and that things like
*.appspot.com should not be allowed. Gerv agreed and said the point of an EV
cert is to know who you are talking to. Discussion was terminated due to
4. 2016 F2F meeting locations: Dean said he had offers to host from 2
parties, one in Europe and one in the USA. We are looking for a 3rd
potential host, perhaps but not necessarily in Asia. Dean asked for
volunteers to send him a note.
5. Validation Working Group: No further updates other than domain
6. CSWG: We now have a final document which the group is giving a final
review. Then it will go to the public forum mailing list for final feedback.
A ballot will follow.
7. Policy Review Working Group: In the last call, the group went
through the document and determined where to add "No Stipulation". Ben will
circulate a ballot to the working group.
8. Info Sharing Working Group: No activity
9. Other Business: Zurich F2F is up to 35 attendees. We are reaching
capacity. Telephone conferencing will not be available. Dean suggested using
Skype with an external speaker. One attendee on the list is an Interested
Party. Discussion ensued on that but there were no objections.
10. Next meeting: June 11th. Adjourned.
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