Chunghwa Telecom Co., Ltd.  votes “Yes”to  Ballot 219 v2. Thanks.

     Li-Chun Chen
     Chunghwa Telecom Co. Ltd.

On Apr 3, 2018, at 9:13 AM, Corey Bonnell via Public <> 

Ballot 219 v2: Clarify handling of CAA Record Sets with no "issue"/"issuewild" 
property tag
Purpose of this ballot:
RFC 6844 contains an ambiguity in regard to the correct processing of a 
non-empty CAA Resource Record Set that does not contain any issue property tag 
(and also does not contain any issuewild property tag in the case of a Wildcard 
Domain Name). It is ambiguous if a CA must not issue when such a CAA Resource 
Record Set is encountered, or if such a Resource Record Set is implicit 
permission to issue.
Given that the intent of the RFC is clear (such a CAA Resource Record Set is 
implicit permission to issue), we are proposing the following change to allow 
for CAA processing consistent with the intent of the RFC.
The following motion has been proposed by Corey Bonnell of Trustwave and 
endorsed by Tim Hollebeek of Digicert and Mads Egil Henriksveen of Buypass.
This ballot modifies the “Baseline Requirements for the Issuance and Management 
of Publicly-Trusted Certificates” as follows, based upon Version 1.5.6:
In section, add this sentence:
CAs MAY treat a non-empty CAA Resource Record Set that does not contain any 
issue property tags (and also does not contain any issuewild property tags when 
performing CAA processing for a Wildcard Domain Name) as permission to issue, 
provided that no records in the CAA Resource Record Set otherwise prohibit 
to the end of this paragraph:
When processing CAA records, CAs MUST process the issue, issuewild, and iodef 
property tags as specified in RFC 6844, although they are not required to act 
on the contents of the iodef property tag. Additional property tags MAY be 
supported, but MUST NOT conflict with or supersede the mandatory property tags 
set out in this document. CAs MUST respect the critical flag and not issue a 
certificate if they encounter an unrecognized property with this flag set.
The procedure for approval of this ballot is as follows:
Discussion (7+ days)
  Start Time: 2018-03-07 19:00:00 UTC 
  End Time: 2018-04-03 19:00:00 UTC
Vote for approval (7 days)
  Start Time: 2018-04-03 19:00:00 UTC
  End Time: 2018-04-10 19:00:00 UTC
Corey Bonnell
Senior Software Engineer
t: +1 412.395.2233
<CA-Browser Forum BR 1.5.6-ballot 219 
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