[cabfpub] [cabfquest] FW: SHA1 Deprecation Ballot

Rob Stradling rob.stradling at comodo.com
Thu Feb 20 17:33:08 UTC 2014

Ben, I'm puzzled about what you meant by "For now, I believe most CAs 
are already in compliance."

How can a CA be non-compliant this side of July 2015?

On 20/02/14 15:41, Ben Wilson wrote:
> The problem is that we need more certainty for planning purposes and to
> be able to make meaningful progress in order to accomplish what
> Microsoft is recommending for us to do.  This is merely ratifying what
> we all know is the de facto policy due to Microsoft's position, which
> they have indicated will not change.  We can tweak this plan later in
> July 2015 if  Microsoft tweaks its policy, and between now and then
> we'll have the opportunity to collect data.  For now, I believe most CAs
> are already in compliance.
> ------------------------------------------------------------------------
> From: Bruce Morton <mailto:bruce.morton at entrust.com>
> Sent: ‎2/‎20/‎2014 6:38 AM
> To: questions at cabforum.org <mailto:questions at cabforum.org>
> Subject: [cabfquest] FW: [cabfpub] SHA1 Deprecation Ballot
> I’m concerned with this ballot.
> Microsoft has stated a policy, but have also stated that they may change
> the policy in 2015. Nevertheless, all CAs must comply with Microsoft’s
> policy as it evolves.
> If a change is made to the Baseline Requirements, then the CAB Forum
> should consider that they will change the policy if Microsoft does.
> If the CAB Forum wants to manage this policy themselves, then there
> should be work done to get data to justify the policy. When should we
> protect against collision? When should we protect against Preimage and
> Second-Preimage? When will SHA2 be sufficiently supported? If the CAB
> Forum is not doing work to get this data, then how do you justify the
> policy?
> If Microsoft is doing the work to create the plan for SHA1 deprecation,
> then I think that the CAs should just follow their lead. When the plan
> is finalized, then it should be incorporated into the BRs.
> Bruce.
> *From:*public-bounces at cabforum.org [mailto:public-bounces at cabforum.org]
> *On Behalf Of *Ben Wilson
> *Sent:* Wednesday, February 19, 2014 3:02 PM
> *To:* public at cabforum.org
> *Subject:* [cabfpub] SHA1 Deprecation Ballot
> I’m not sure whether I’ve captured it all, but here is a rough draft of
> a possible ballot for the Baseline Requirements.
> Effective immediately CAs SHOULD begin migrating away from using the
> SHA-1 hashing algorithm to sign SSL/TLS and code signing certificates.
> Beginning January 1, 2016, CAs SHALL NOT use the SHA-1 hashing algorithm
> to sign SSL/TLS or code signing certificates.
> Please provide your comments, edits, etc.,
> Thanks,
> Ben
> _______________________________________________
> Public mailing list
> Public at cabforum.org
> https://cabforum.org/mailman/listinfo/public

Rob Stradling
Senior Research & Development Scientist
COMODO - Creating Trust Online
Office Tel: +44.(0)1274.730505
Office Fax: +44.(0)1274.730909

COMODO CA Limited, Registered in England No. 04058690
Registered Office:
   3rd Floor, 26 Office Village, Exchange Quay,
   Trafford Road, Salford, Manchester M5 3EQ

This e-mail and any files transmitted with it are confidential and 
intended solely for the use of the individual or entity to whom they are 
addressed.  If you have received this email in error please notify the 
sender by replying to the e-mail containing this attachment. Replies to 
this email may be monitored by COMODO for operational or business 
reasons. Whilst every endeavour is taken to ensure that e-mails are free 
from viruses, no liability can be accepted and the recipient is 
requested to use their own virus checking software.

More information about the Public mailing list