Hello Ben-san,

Thank you for your quick and courteous reply.
We will prepare a report on how to post the transition plan in a "CA 
Certificate Root Program" bug (e.g., titled “Remove Email Trust Bit from CA 
XYZ”, or similar) in Bugzilla.

Best regards,

ONO Fumiaki / 大野 文彰
SECOM Trust Systems Co., Ltd.

From: Ben Wilson <[email protected]>
Sent: Tuesday, April 1, 2025 6:12 AM
To: Fumiaki ONO <[email protected]>
Cc: [email protected]
Subject: Re: MRSP 3.0: Published

Dear Ono-san,

Thank you for your questions regarding how to submit a dual-root transition 
plan required by MRSP Section 7.5.3.  I am still finalizing the process for how 
transition plans should be submitted, and I will post such guidance on the 
Mozilla CA wiki. However, at this time, the preferred method will be to post 
the transition plan in a "CA Certificate Root Program" 
bug<https://bugzilla.mozilla.org/enter_bug.cgi?product=CA%20Program&component=CA%20Certificate%20Root%20Program>
 (e.g., titled “Remove Email Trust Bit from CA XYZ”, or similar). Filing a 
certificate change bug in the CA Certificate Root Program component of Bugzilla 
will itself initiate the change request and get the process started. See 
https://wiki.mozilla.org/CA/Certificate_Change_Process.  Alternatively, the 
plan could be filed in the CA Documents 
component<https://bugzilla.mozilla.org/enter_bug.cgi?product=CA%20Program&component=CA%20Documents>
 in Bugzilla. Either of these approaches ensures transparency and allows the 
community to be aware of the CA operator’s progress and intentions. Or, the 
less-preferred method would be, if a CA operator strongly believes that the 
transition plan contains sensitive or proprietary information, to submit the 
plan on or before April 15, 2026, by email to 
[email protected]<mailto:[email protected]>. If that approach is 
taken, a redacted or other transition plan would still need to be uploaded to 
Bugzilla after the April 15, 2026, date.

As for the format and content, we do not currently require a rigid template 
(I've pasted something below as guidance, if helpful). However, the plan must 
clearly address how the CA operator will meet Mozilla’s requirement to migrate 
away from dual-use roots by December 31, 2028. This means the plan must include 
either removal of the websites or email trust bit or the root itself from our 
certdata.txt file. Please note that all transition plans should focus only on 
Mozilla’s requirements, not those of other root programs, and you do not need 
to include unnecessary implementation detail—just ensure that your plan is 
clear, reasonable, and demonstrates how the root CA will be migrated away from 
dual-use by the December 31, 2028, deadline.

We’ll continue to monitor the types of plans received and may provide 
additional guidance later if necessary.

Thanks,

Ben



Root Transition Plan Template

CA Operator Name:
[Insert name of the CA operator]

Root CA Certificate:
[Insert full subject DN and SHA256 hash of the affected root certificate]

Summary Description of the Plan:
Please describe, in one or two paragraphs, how your organization plans to 
transition away from using this root certificate as a dual-use root. Indicate 
which of the following actions will be taken:

_____ Request to remove the email trust bit

_____ Request to remove the websites trust bit
_____ Request to remove the root

_____ Other (Explain)

Transition Timeline:
Please provide relevant dates and milestones. Example entries might include:

  *   Date to submit change request: [MM/DD/YYYY]
  *   Last issuance of conflicting certificates: [MM/DD/YYYY]
  *   Expiration date of last affected certificate: [MM/DD/YYYY]
  *   Planned date of removal: [MM/DD/YYYY]
  *   Estimated date for inclusion of new single-purpose root(s) (if 
applicable): [MM/DD/YYYY]

Additional Notes (Optional):
Use this space to provide any other relevant information to support your plan 
or clarify timelines.




On Sun, Mar 30, 2025 at 8:43 PM Fumiaki ONO 
<[email protected]<mailto:[email protected]>> wrote:
Hello Ben-san,

We have a question about MRSP Section 7.5.3.
How should we submit the transition plan?
If there are any specifications for the format or where to send it, we would 
appreciate it if you could let us know.

https://www.mozilla.org/en-US/about/governance/policies/security-group/certs/policy/

> 7.5.3 Transition Plan for Existing Roots
> Root CA certificates included in Mozilla's Root Store as of January 1, 2025, 
> that have both the websites and the email trust bits enabled MAY remain 
> trusted after April 15, 2026, if the CA operator has submitted a transition 
> plan by April 15, 2026, to migrate to dedicated hierarchies by December 31, 
> 2028.

Best regards,

ONO Fumiaki / 大野 文彰
SECOM Trust Systems Co., Ltd.
2025年2月25日火曜日 8:18:50 UTC+9 Ben Wilson:
Greetings all,
The final version of MRSP v.3.0 is now 
published<https://www.mozilla.org/en-US/about/governance/policies/security-group/certs/policy/>
 with an effective date of March 15, 2025. Please review and let me know if you 
spot any issues.
Thanks,
Ben

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