All,

This email commences a public discussion period that will run through
Friday, January 10, 2025. This is regarding the issuance of S/MIME
certificates by Cybertrust Japan (CTJ) under an externally-operated
subordinate CA issued by SECOM (*see *Mozilla Root Store Policy, Section 8.4
<https://www.mozilla.org/en-US/about/governance/policies/security-group/certs/policy/#84-externally-operated-subordinate-cas>).


Both SECOM and CTJ are included as CA owners/operators in one or more root
stores, but CTJ does not currently have any of its own root certificates
enabled for S/MIME issuance. (In the new year, we will commence a 6-week
discussion period for the CTJ *SecureSign Root CA16*
<https://crt.sh/?sha256=4C1CCD24F17E950FC18536B33CAFE32293CFC33E8467B41E1C693055D7F513BF>*,
*which CTJ has submitted for inclusion as a root certificate for S/MIME
issuance.)

The purpose of this public discussion is to promote openness and
transparency. Each Root Store makes its inclusion decisions independently,
on its own timelines, and based on its own inclusion criteria. Successful
completion of this public discussion process does not guarantee any
favorable action by any root store.

Anyone with concerns or questions is urged to raise them on this CCADB
Public list by replying directly to this discussion thread. Representatives
of SECOM or CTJ, as the case may be, will respond directly in this thread
to all questions that are posted.  *However, please note that due to
internationally-recognized holidays, some responses may be delayed.*


*Request Details:*

*Bugzilla Case Number:  *# 1933132
<https://bugzilla.mozilla.org/show_bug.cgi?id=1933132> - SECOM’s Request
re: Cybertrust Japan SureMail CA G5

(Note that signing/issuance of the external Sub CA can occur before
completion of public discussion and root store approval, as long as the
external Sub CA does not issue end entity certificates.)


*Organization Background:*

   - *Owner/Operator of External Sub-CA:*  Cybertrust Japan Co., Ltd.
   - *Website:* https://www.cybertrust.co.jp/
   - *Address:* ARK Hills Sengokuyama Mori Tower 35F, 1-9-10 Roppongi,
   Minato-ku, Tokyo, 106-0032
   - *Problem Reporting Mechanisms:*  [email protected]
   - *Organization Type:* Private Corporation
   - *Repository URL (Cybertrust Japan SureMail CA G5 (SECOM Subordinate
   CA)):*

https://www.cybertrust.ne.jp/ssl/repository/


*Certificate Requested for Approval:*

*Cybertrust Japan SureMail CA G5 (SECOM Subordinate CA):*

   - *Root CA:*  SECOM’s Security Communication RootCA2
   
<https://crt.sh/?SHA256=513B2CECB810D4CDE5DD85391ADFC6C2DD60D87BB736D2B521484AA47A0EBEF6>
   - *Certificate profile:*
   https://bugzilla.mozilla.org/attachment.cgi?id=9439631 (.xlsx)
   - *Use cases served/EKUs:*

Secure Email (S/MIME) 1.3.6.1.5.5.7.3.4


*Existing Publicly Trusted CAs from SECOM and CTJ:*

SECOM and CTJ already have several root CAs included in root stores. The
requested subordinate CA represent CTJ’s efforts to realize S/MIME issuance
capabilities. SECOM confirms that it has reviewed and validated CTJ’s
policy and audit documentation.


*Relevant Policy and Practices Documentation:*

   - *CTJ S/MIME Certificate Policy **(CP)*

https://www.cybertrust.ne.jp/ssl/repository/SMCP_English.pdf

   - *CTJ Certification Practice Statement (**CPS):*

https://www.cybertrust.ne.jp/ssl/repository/CTJCPS_English.pdf (Version
1.10)


*Most Recent Self-Assessments:*

   - *Cybertrust Japan SureMail CA G5 (SECOM Subordinate CA)**:*

 Assessment of CTJ in Bugzilla Attachment #9439634
<https://bugzilla.mozilla.org/attachment.cgi?id=9439634> (.xlsx) (completed
Sept. 24, 2024)


*Audit Statements:*

   - *Auditor:* KPMG
   - *Audit Criteria:* WebTrust
   - *Recent Audit Statements:*

    https://bugzilla.mozilla.org/attachment.cgi?id=9439632


*Incident Summary:*

SECOM has previously reported two incidents in Bugzilla related to CTJ. In
both cases, SECOM and CTJ worked together promptly to investigate and
address the issues, taking swift action, and successfully closing them.

   - SECOM: EV certificate mis-issued with the incorrect Registration
   Number by CTJ
   https://bugzilla.mozilla.org/show_bug.cgi?id=1805866
   - SECOM: CTJ failed to make an annual CPS update
   https://bugzilla.mozilla.org/show_bug.cgi?id=1769222



Also, please let me know if you have any questions concerning this process.


Thank you,


Ben Wilson

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