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Server Certificate Working Group

Officers

  • Chair: Dimitris Zacharopoulos (HARICA)
  • Vice Chair: Wayne Thayer (Fastly)

Charter

Server Certificate Working Group Charter

How to Join

Instructions are here.

Ballots

Server Certificate Working Group Ballots

Server Certificate WG Mailing List

https://groups.google.com/a/groups.cabforum.org/g/servercert-wg

Subcommittees

Validation Subcommittee

Mailing list - https://groups.google.com/a/groups.cabforum.org/g/validation

Members

Certification Authorities

Certificate Consumers

  • 360 Browser
  • Apple
  • Brave
  • Cisco Systems
  • Comodo Security Solutions
  • Google
  • Microsoft
  • Mozilla
  • Opera Software AS
  • QikFox Cybersecurity Systems Inc.

Associates

  • ACAB Council
  • CPA Canada/WebTrust
  • Keyfactor
  • tScheme
  • US Federal PKI Management Authority

Interested Parties

  • Akamai
  • Amir Omidi (Private Person)
  • Andrea Fossati
  • Andrew Ayer
  • Aprio
  • Arno Fiedler
  • Baker TIlly Malaysia
  • Beijing Zhongyu Yongxin Network Technology Co., Ltd
  • Certinomis
  • Certizen Limited
  • Cloudflare
  • Common Crypto Authority
  • David Croston (Private Person)
  • Deloitte LLP
  • Derek Greene (private person)
  • Digitalberry
  • Digitorus
  • Dong Yul Lee (Private Person)
  • EFF (Electronic Frontier Foundation)
  • Encryption Consulting
  • Envers
  • ETSI
  • Ganesh Mallaya (Private Person)
  • George Palmer (Private Person)
  • Grace Cimaszewski (Private Person)
  • Henry Birge-Lee (Private person)
  • ICANN
  • India PKI Forum
  • Insta Advance OY
  • Joseph Cigin (Private Person)
  • Joshua Garrett (Private Person)
  • Kenyon Abbott (private person)
  • KPMG AG
  • KPMG Netherlands
  • KPMG Taiwan
  • K Software LLC
  • Leader Telecom BV
  • Maria Merkel (Private Person)
  • Mark Gamache (Private Person)
  • Markmonitor
  • MSC Trustgate Sdn Bhd
  • Netflix
  • NovaVanguard Technology Co., Ltd.
  • Peercraft
  • Prateek Mittal (Private Person)
  • QuantuSS Network
  • Rameez Rehman (Private Person)
  • Ryan Hurst (Private Person)
  • Sandelman Software Works
  • Santosh Pandit (Private Person)
  • Schellman and Company LLC
  • Sebastian Nielsen (Private Person)
  • Sergey Pavlovskiy (Private Person)
  • SGNR, LLC
  • SINAM Limited Liability Company
  • SKBS UG (haftungsbeschränkt)
  • TL Certification Centre Co., Ltd(泰尔认证中心有限公司)
  • TurkTrust
  • Unsung Limited
  • Xiaokang Wang (Private Person)
  • Yahoo Inc
  • Yinglan Lu (Private person)
  • Zane Ma (Private Person)
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).