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2025-01-09 Minutes of the Code Signing Certificate Working Group

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)), Luis Cervantes - (SSL.com), Marco Schambach - (IdenTrust), Martijn Katerbarg - (Sectigo), Nome Huang - (TrustAsia), Rebecca Kelly - (SSL.com), Roberto Quionones - (Intel), Scott Rea - (eMudhra), Thomas Zermeno - (SSL.com), Tim Crawford - (CPA Canada/WebTrust), Trevoli Ponds-White - (Amazon)

Note Well

Martijn read the Note Well,

Approval of prior meeting minutes

The December 12, 2024 minutes were approved.

Max validity of CS certs

Ian was not on the call. Martijn will reach out to Ian.

Dean advise that there have been some questions on the ballot. A concern is that some Subscribers are using tokens and shorter validity periods may be an issue. An alternative would be for Subscribers to use a signing service.

During the meeting, Ian sent an email. Ian will have a proposal before 1 February 2025. Nate will transition in February.

Aligning CSCWG BRs with recent SCWG ballots

A proposal has been created in Github incorporating 5 Server Working Group ballots. Am now looking for two endorsers. Martijn stated he would endorse.

Bruce stated that the effectivity date stated is 15 June 2025, this can change if this is an issue. Regarding pre-sign linting, this was included as a SHOULD, since there are no linters which cover the CSBRs.

Other business

Bruce suggested that we should consider a clean-up ballot. This would make a correction from another ballot, plus remove some past effective dates. This would be a new ballot.

Martijn stated we will need to start working on one certificate type this year.

Next Meeting

January 23, 2025

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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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).