[cabfpub] [EXTERNAL] Require commonName in Root and Intermediate Certificates ballot draft

Tue Mar 28 15:21:43 UTC 2017

I agree with Bruce.  There are instances where a new subCA certificate is issued  for the same key pair but with a different serial number and different validity dates, etc.  I would replace “certificate” with “subject” and in front of “certificates” I would insert “subjects issued” so that it reads “This field MUST be present and the contents MUST be an identifier for the subject of the certificate which is unique across all subjects issued certificates by the issuing certificate.”

From: Public [mailto:public-bounces at cabforum.org] On Behalf Of Bruce Morton via Public
Sent: Tuesday, March 28, 2017 8:21 AM
To: CA/Browser Forum Public Discussion List <public at cabforum.org>
Cc: Bruce Morton <Bruce.Morton at entrustdatacard.com>
Subject: Re: [cabfpub] [EXTERNAL] Require commonName in Root and Intermediate Certificates ballot draft

Gerv,

For CNs for Subordinate CAs, the ballot states “This field MUST be present and the contents MUST be an identifier for the certificate which is unique across all certificates issued by the issuing certificate.”

In some cases the certificate for a Subordinate CA may be reissued. In this case the Subject Name should stay the same, so the CN should not change. I haven’t figured out alternative language, but I think it should imply that the CN is unique per each Subordinate CA and not unique per certificate.

Thanks, Bruce.

From: Public [mailto:public-bounces at cabforum.org] On Behalf Of Gervase Markham via Public
Sent: Tuesday, March 28, 2017 9:34 AM
To: CABFPub <public at cabforum.org<mailto:public at cabforum.org>>
Cc: Gervase Markham <gerv at mozilla.org<mailto:gerv at mozilla.org>>
Subject: [EXTERNAL][cabfpub] Require commonName in Root and Intermediate Certificates ballot draft

Hi everyone,

Here's a draft of a ballot to require commonName to be present in root and Intermediate certificates, which is something we've talked about in the past although not all that recently. This idea has had less review, so it may require more wordsmithing.

Gerv

Ballot XXX - Require commonName in Root and Intermediate Certificates

Purpose of Ballot: Section 7.1.4.3 of the BRs, which deals with Subject Information for Subordinate CA Certificates, currently requires only that all information in a Subordinate CA Certificate is accurate; it does not say what information is required. Some of the necessary information is required elsewhere in the BRs, but it is not complete - commonName is missing. If commonName is omitted, DN clashes can more easily occur. So this motion centralises that information in the obvious place, and adds a commonName requirement.

The following motion has been proposed by Gervase Markham of Mozilla and endorsed by XXX of XXX and XXX of XXX:

-- MOTION BEGINS --

* Delete 7.1.2.1 (e), which currently defines the Subject Information required in a Root CA Certificate.

* Delete 7.1.2.2 (h), which currently defines the Subject Information required in a Subordinate CA Certificate.

* Rename section 7.1.4.2, currently titled "Subject Information", to "Subject Information - Subscriber Certificates".

* Rename section 7.1.4.3, currently titled "Subject Information - Subordinate CA Certificates" to "Subject Information - Root Certificates and Subordinate CA Certificates".

* Based on the style used in 7.1.4.2.2 and the content from the now-deleted 7.1.2.1 (e) and 7.1.2.2 (h), add the following section 7.1.4.3.1:

7.1.4.3.1 Subject Distinguished Name Fields

Certificate Field: subject:commonName (OID 2.5.4.3)
Required/Optional: Required
Contents: This field MUST be present and the contents MUST be an identifier
for the certificate which is unique across all certificates issued by the
issuing certificate.

b. Certificate Field: subject:organizationName (OID 2.5.4.10)
Required/Optional: Required
Contents: This field MUST be present and the contents MUST contain
either the Subject CA’s name or DBA as verified under Section 3.2.2.2.
The CA may include information in this field that differs slightly from
the verified name, such as common variations or abbreviations,  provided
that the CA documents the difference and any abbreviations used are
locally accepted abbreviations; e.g., if the official record shows
“Company Name Incorporated”, the CA MAY use “Company Name Inc.” or
“Company Name”.

c. Certificate Field: subject:countryName (OID: 2.5.4.6)
Required/Optional: Required
Contents: This field MUST contain the two‐letter ISO 3166‐1 country code
for the country in which the CA’s place of business is located.

-- MOTION ENDS --

The procedure for approval of this Final Maintenance Guideline ballot is as follows (exact start and end times may be adjusted to comply with applicable Bylaws and IPR Agreement):

BALLOT XXX

Status: Final Maintenance Guideline

Start time (23:00 UTC)

End time (23:00 UTC)

Discussion (7 to 14 days)

XXX

XXX

Vote for approval (7 days)

XXX

XXX

If vote approves ballot: Review Period (Chair to send Review Notice) (30 days).

If Exclusion Notice(s) filed, ballot approval is rescinded and PAG to be created.

If no Exclusion Notices filed, ballot becomes effective at end of Review Period.

Upon filing of Review Notice by Chair

30 days after filing of Review Notice by Chair

From Bylaw 2.3: If the Draft Guideline Ballot is proposing a Final Maintenance Guideline, such ballot will include a redline or comparison showing the set of changes from the Final Guideline section(s) intended to become a Final Maintenance Guideline, and need not include a copy of the full set of guidelines.  Such redline or comparison shall be made against the Final Guideline section(s) as they exist at the time a ballot is proposed, and need not take into consideration other ballots that may be proposed subsequently, except as provided in Bylaw Section 2.3(j).

Votes must be cast by posting an on-list reply to this thread on the Public list.  A vote in favor of the motion must indicate a clear 'yes' in the response. A vote against must indicate a clear 'no' in the response. A vote to abstain must indicate a clear 'abstain' in the response. Unclear responses will not be counted. The latest vote received from any representative of a voting member before the close of the voting period will be counted. Voting members are listed here: https://cabforum.org/members/

In order for the motion to be adopted, two thirds or more of the votes cast by members in the CA category and greater than 50% of the votes cast by members in the browser category must be in favor.  Quorum is shown on CA/Browser Forum wiki.  Under Bylaw 2.2(g), at least the required quorum number must participate in the ballot for the ballot to be valid, either by voting in favor, voting against, or abstaining.

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