CA/Browser Forum

S/MIME Certificate Working Group Ballots

Ballots by Status

Voting Period

  • Ballot SMC018: Realignment of Multipurpose use cases

IPR Review Period

There are no ballots with the status "IPR Review" in the S/MIME Certificate Working Group

Discussion Period

There are no ballots with the status "Discussion Period" in the S/MIME Certificate Working Group

Draft / Under Consideration

There are no ballots with the status "New" in the S/MIME Certificate Working Group
There are no ballots with the status "Pre-Ballot" in the S/MIME Certificate Working Group

Passed

  • SMC016: Equivalence with Ballots SC096 and SC097
  • SMC015v2: Allow mDL for Authentication of Individual Identity
  • SMC014: DNSSEC for S/MIME
  • SMC013: Enable PQC Algorithms for S/MIME
  • SMC012: Introduce ACME for S/MIME
  • SMC011: Add EUID as Registration Reference
  • SMC010: Introduction of Multi-Perspective Issuance Corroboration
  • Forum-33: Election of CA/Browser S/MIME Certificate WG Vice Chair
  • SMC09: Pre-Linting, WebTrust for NetSec, and Minor Updates
  • Election Ballot Forum-27: Election of CA/B Forum S/MIME Certificate WG Chair
  • SMC08: Deprecate Legacy Generation Profiles and Minor Updates
  • SMC07: Align Logging Requirement and Key Escrow clarification
  • SMC06: Post implementation clarification and corrections
  • SMC05: Adoption of CAA for S/MIME
  • SMC04: Addition of ETSI TS 119 411-6 to audit standards
  • SMC03: Corrections and clarifications for “S/MIME Baseline Requirements”
  • SMC01: Final Guideline for “S/MIME Baseline Requirements"
  • SMC02: Confirmation Ballot for Vice Chair
  • SMCWG Chair Election / 2022

Cancelled

  • Ballot SMC017: Increase Minimum RSA CA Key Size

Failed

There are no ballots with the status "Ballot Failed" in the S/MIME Certificate Working Group

Information about Ballots

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).