Sorry - please ignore that last email, it was intend for the Validation working 
group list.

From: [email protected] [mailto:[email protected]] On 
Behalf Of Doug Beattie
Sent: Wednesday, March 30, 2016 12:32 PM
To: Jeremy Rowley <[email protected]>; [email protected]
Subject: Re: [cabfpub] Certificate validity periods

I made the new options sections, vs. a numbered list.  Changes tracked.

I'm OK with the reminder.

Doug

From: [email protected]<mailto:[email protected]> 
[mailto:[email protected]] On Behalf Of Jeremy Rowley
Sent: Wednesday, March 30, 2016 12:04 PM
To: [email protected]<mailto:[email protected]>
Subject: [cabfpub] Certificate validity periods

Hi everyone,

I'd like to resurface the certificate validity period discussion and see if 
there is a way to move this forward.  I'm still keen on seeing a standardized 
maximum validity period for all certificate types, regardless of whether the 
certificate is DV, OV, or EV. I believe the last time this was discussed, we 
reached an impasse where the browsers favored a shorter validity period for 
OV/DV and the CAs were generally supportive of a longer-lived EV certificate 
(39 months). The argument for a shorter validity period were 1) encourages key 
replacement, 2) ensures validation occurs more frequently, 3) deters damage 
caused by key loss or a change in domain control, and 4) permits more rapid 
changes in industry standards and accelerates the phase-out of insecure 
practices. The argument for longer validity periods: 1) customers prefer longer 
certificate validity periods, and 2) the difficulty in frequent re-validation 
of information.

So far, there seems to be two change proposals with a couple of variations:


1)      Set all certificate validity periods to no more than 27 months

a.      Require re-validation of information for OV/DV certificates at 39 
months OR

b.      Require re-validation of information for all certs at 13 months

2)      Set all certificate validity periods to 39 months

a.      Require re-validation every 13 months

b.      Require re-validation of information for OV/DV certificates at 39 months

What are the objections to 1a? With all the automated installers abounding, 1a 
seems to capture the simplicity and customer convenience of 39 months with the 
advantages of shorter-lived certs. Who would oppose/endorse a ballot that does 
one of these?

Jeremy
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