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Security Fundamentals & Crypto · Advanced

CA/Browser Forum

Industry body of certificate authorities and browser/OS vendors that sets rules for publicly trusted certificates.

Definition

The CA/Browser Forum publishes Baseline Requirements for TLS certificates and guidelines for EV and code signing certificates. Its ballots set rules such as maximum validity periods and domain validation methods. Root programs enforce these rules by distrusting non-compliant CAs.

Example

Ballot SC-081 set a phased reduction of TLS certificate lifetimes to 47 days by 2029.

Exam tip

Industry certificate rules come from the CA/B Forum, not from NIST or IETF.

Related terms