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2025-03-20 Minutes of the Code Signing Certificate Working Group

Minutes of CSCWG

March 20, 2025

Attendees

Brianca Martin (Amazon), Brian Winters (IdenTrust), Bruce Morton (Entrust), Corey Bonnell (DigiCert), Dean Coclin (DigiCert), Inaba Atsushi (GlobalSign), Iñigo Barreira (Sectigo), Kateryna Aleksieieva (Asseco Data Systems SA (Certum)), Marco Schambach (IdenTrust), Martijn Katerbarg (Sectigo), Nate Santiago (Microsoft), Nome Huang (TrustAsia), Rebecca Kelly (SSL.com), Thomas Zermeno (SSL.com)

Note Well

Thomas Zermeno read the Note Well.

Approval of prior meeting minutes

No minutes to approve at this time.

Preparation and review of F2F Agenda

• Pre-emptive revocation • Further restricting Hardware Key usage options • PQC - update on draft ballot o Nate requested to be sent information about this as there have been some issues with receiving list emails.

Maximum validity of CS certificates

No further updates at this time.

Moving towards a single profile

No further updates at this time. Bruce adds that we need to start moving on this since Microsoft has been pushing for this deprecation.

There’s a short discussion on if we should have these topics still on the agenda if they’re not moving yet. Corey suggests utilizing GitHub issues to keep track.

CSC-29: Aligning CSCWG BRs with recent SCWG ballots -In discussion period

No further update at this point

Any Other Business

Nate inquired about usage of the mailing lists and making sure all members are added. Nate will reach out to Martijn to make sure everything is in order.

Meeting Adjourned

Latest releases
Server Certificate Requirements
SC098: Process RFC 8657 CAA Parameters - Jun 16, 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
v1.0.15 - Ballot SMC017v2 - Jul 30, 2026

This ballot increases the minimum RSA key size for Root and Subordinate CA certificates in the S/MIME BRs from 2048 to 4096 bits for keys created after September 15, 2026, while retaining the 2048-bit minimum for Subscriber certificates. The ballot further requires that by September 15, 2027, CAs SHALL NOT issue Subscriber certificates from any Sub-CA whose RSA key modulus is less than 3072 bits, effectively sunsetting issuance from legacy 2048-bit Sub-CAs. The ballot also includes minor typographic corrections. This ballot is proposed by Martijn Katerbarg (Sectigo) and endorsed by Ben Wilson (Mozilla) and Stephen Davidson (DigiCert)

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

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