CA/Browser Forum
Home » All CA/Browser Forum Posts » 2025-12-11 Minutes of the Code Signing Certificate Working Group

2025-12-11 Minutes of the Code Signing Certificate Working Group

Code Signing Working Group – Meeting Minutes

Date: 11 December

1. Antitrust Reminder (Note Well)

The Note Well was read

2. Review of Agenda

3. Approval of Minutes

November 13th Meeting Minutes were approved Face-to-Face (F2F) Meeting Minutes were approved

4. Discussion Topics

4.1 SC-Alignment Ballot – Microsoft OCSP Concerns

  • No Microsoft representatives were present on the call.
  • No updates were observed on the mailing list regarding Microsoft’s OCSP-related concerns.
  • Topic tabled until Microsoft provides an update.

4.2 Post-Quantum Cryptography (PQC)

  • The topic remains on the agenda at the request of Brianca (Amazon)
  • Discussion noted that progress is largely dependent on Microsoft’s platform direction and support.

4.3 Code Signing – Next Steps (Single Profile)

  • Identified consolidation into a single code signing profile (merging Code Signing and EV Code Signing) as a major project for the coming year.
  • A working branch tracking proposed updates to the Code Signing Baseline Requirements (CSBRs) has been created
  • Rewrite and review CSBR sections incrementally (approximately one section per month).

5. Any Other Business

None

6. Adjourn

7. Next Meeting

Date: 8 January

Attendees

Brian Winters (IdenTrust), Inaba Atsushi (GlobalSign), Iñigo Barreira (Sectigo), Martijn Katerbarg (Sectigo), Nome Huang (TrustAsia), Scott Rea (eMudhra), Thomas Zermeno (SSL.com), Wiktoria Więckowska (Asseco Data Systems SA (Certum))

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

Edit this page
The Certification Authority Browser Forum (CA/Browser Forum) is a voluntary gathering of Certificate Issuers and suppliers of Internet browser software and other applications that use certificates (Certificate Consumers).