[Servercert-wg] Discussion Period Begins on Ballot SC53: Sunset for SHA-1 OCSP Signing

Karina Sirota Karina.Sirota at microsoft.com
Mon Jan 24 05:17:23 UTC 2022

Microsoft votes yes to ballot SC53.


Karina Sirota | Security Program Manager 2
Trusted Root Program, Trust Governance and Resilience

After-hours responses neither required nor expected.

From: Servercert-wg <servercert-wg-bounces at cabforum.org> On Behalf Of Corey Bonnell via Servercert-wg
Sent: Monday, January 10, 2022 9:00 AM
To: CA/B Forum Server Certificate WG Public Discussion List <servercert-wg at cabforum.org>
Subject: [EXTERNAL] [Servercert-wg] Discussion Period Begins on Ballot SC53: Sunset for SHA-1 OCSP Signing

Purpose of Ballot
Weaknesses regarding the use of the SHA-1 hash algorithm for signatures have been known for several years. While there is currently a prohibition on the use of CA Private Keys to directly sign OCSP responses using SHA-1, Private Keys corresponding to OCSP delegated responders may still be used to sign OCSP responses using SHA-1. This ballot establishes a sunset date to prohibit delegated OCSP signing with the SHA-1 hash algorithm.

The following motion has been proposed by Corey Bonnell of DigiCert and endorsed by Ben Wilson of Mozilla and Bruce Morton of Entrust.
Motion Begins
This ballot modifies the "Baseline Requirements for the Issuance and Management of Publicly-Trusted Certificates" ("Baseline Requirements"), based on Version 1.8.0:
MODIFY the Baseline Requirements as specified in the following Redline:
Motion Ends
This ballot proposes a Final Maintenance Guideline. The procedure for approval of this ballot is as follows:

Discussion (7+ days)
Start time: 2022-01-10 15:00:00 UTC
End time: Not before 2022-01-17 15:00:00 UTC

Vote for approval (7 days)
Start time: TBD
End time: TBD

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