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2024-04-10 Minutes of the S/MIME Certificate Working Group

Minutes of SMCWG

April 10, 2024

These are the Approved Minutes of the meeting described in the subject of this message. Corrections and clarifications where needed are encouraged by reply.

Attendees

Abhishek Bhat - (eMudhra), Adrian Mueller - (SwissSign), Adriano Santoni - (Actalis S.p.A.), Aggie Wang - (TrustAsia), Andreas Henschel - (D-TRUST), Ashish Dhiman - (GlobalSign), Ben Wilson - (Mozilla), Clint Wilson - (Apple), Dave Chin - (CPA Canada/WebTrust), Eva Vansteenberge - (GlobalSign), Inaba Atsushi - (GlobalSign), Inigo Barreira - (Sectigo), Keshava Nagaraju - (eMudhra), Martijn Katerbarg - (Sectigo), Naveen Kumar - (eMudhra), Nome Huang - (TrustAsia), Renne Rodriguez - (Apple), Rollin Yu - (TrustAsia), Sandy Balzer - (SwissSign), Scott Rea - (eMudhra), Stefan Selbitschka - (rundQuadrat), Stephen Davidson - (DigiCert), Tadahiko Ito - (SECOM Trust Systems), Thomas Zermeno - (SSL.com), Tsung-Min Kuo - (Chunghwa Telecom), Yashwanth TM - (eMudhra)

1. Roll Call

The Roll Call was taken.

2. Read Antitrust Statement

The statement was read concerning the antitrust policy, code of conduct, and intellectual property rights agreement.

3. Review Agenda

Minutes were prepared by Stephen Davidson.

4. Approval of minutes from last teleconference

The minutes for the teleconference of March 27 were approved.

5. Discussion

Stephen Davidson noted that Ballot SMC06 was in Voting Period until April 11. See https://lists.cabforum.org/pipermail/smcwg-public/2024-April/000957.html. The WG reviewed Issue 240 raised by Martijn Karterbarg that the GOV registration scheme did not allow the use of the XX country code for countries that do not yet have an ISO-assigned code. See https://github.com/cabforum/smime/issues/240 Stephen confirmed that there are CAs with significant existing populations of valid Legacy generation certificates, particularly in the Sponsor- and Org-validated categories. The WG commenced a discussion of the differences between the Legacy generation certificate profiles versus the Multipurpose and Strict. The following summarises the conversation, providing links to the related sections. https://cabforum.org/posts/2024/2024-04-10-legacy-deprecation/SMCWG_20240410_Final.pdf Stephen asked Certificate Issuers to review this information and provide feedback to help the SMCWG determine appropriate steps and timelines to migrate to the Multipurpose/Strict profiles. If preferred, that information can be provided directly to Stephen or Martijn to consolidate.

6. Any Other Business

It was agreed to cancel the teleconference scheduled for May 22 due to proximity to the F2F 62 meeting.

7. Next call

Next call: Wednesday, April 24, 2024 at 11:00 am Eastern Time

Adjourned

Latest releases
Server Certificate Requirements
SC099: Improve Recording of Validation Methods - May 19, 2026

Code Signing Requirements
v3.8 - Aug 5, 2024

What’s Changed CSC-25: Import EV Guidelines to CS Baseline Requirements by @dzacharo in https://github.com/cabforum/code-signing/pull/38 Full Changelog: https://github.com/cabforum/code-signing/compare/v3.7...v3.8

S/MIME Requirements
v1.0.14 - Ballot SMC016 - May 5, 2026

This ballot maintains consistency between the S/MIME Baseline Requirements and the TLS Baseline Requirements with changes introduced by Ballots SC096 and SC097. Specifically, this ballot: Creates a carve-out of the logging requirements for DNSSEC specifically, stating these are not in scope. For audit purposes, change management logging is able to confirm if the appropriate controls are in effect or not. Sunsets all remaining use of SHA-1 signatures in Certificates and CRLs. It is noted that most uses of SHA-1 signatures are already deprecated by SC097. With this ballot, all unexpired Subordinate CA Certificates issuing S/MIME containing the SHA-1 signature algorithm must be revoked. This proposal does not prohibit the use of SHA-1 to generate issuerKeyHash or issuerNameHash values as currently required by RFC 5019. Includes minor formatting corrections.

Network and Certificate System Security Requirements
Version 2.0.5 (Ballot NS-008) - Jul 9, 2025

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