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2022-11-17 Minutes of the Code Signing Certificate Working Group

Attendees

Atsushi Inaba (GobalSign), Bruce Morton (Entrust), Corey Bonnell (DigiCert), Dimitris Zacharopoulos (HARICA), Ian McMillan (Microsoft), Joanna Fox (Trustcor), Martijn Katerberg (Sectigo), Roberto Quinones (Intel), Tim Crawford (BDO), Tomas Gustavsson, Trevoli Ponds-White (Amazon Trust Services)

Minutes

  1. Antitrust statement was read.
  2. Minutes from 25 October are not yet available. Minutes from 3 November were approved.
  3. Ballot: Signing Service Update – The draft text has been recirculated. Dimitris has some comments on the ETSI Time-stamping audit requirements. The Signing Service audit requirements were fine. Discussed allowing a Signing Service to be audited to a SANs standard; this would require more discussion. Ian plans to endorse. Ian would like to address FIPS 140-2 Level 3 requirement date for the Signing Service. Bruce reviewed the NetSec audit requirements and most appear they could apply to a Signing Service, if CA was replaced with Signing Service and other minor adjustments.
  4. Ballot: Malware base revocation – A number of comments have been added and have been addressed. Martijn will push the changes to GitHub and will push the ballot forward in the next few days.
  5. Other business – Dimitris has not received any other feedback on moving away from the SSL BRs. The direction is to try to replace references with text from the SSL BRs. Martijn will plan to put sometime to this over the next week. Bruce stated the plan was also to try to rationalize if the changes do not make sense for Code Signing.
  6. Next Meeting – 1 December
  7. Adjourn
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).