A Certificate Practice Statement (CPS) is a document describing how a certificate authority actually implements and operates its certificate services. It matters because trust programs need more than abstract policy; they also need an auditable description of real operational practice.
What is Certificate Practice Statement (CPS)?
A CPS explains issuance processes, validation steps, revocation handling, security controls, roles, and operational safeguards. It is often used alongside certificate policy to connect stated assurance goals to the CA’s real-world practices.
What Certificate Practice Statement (CPS) Commonly Supports
Common uses include CA audits, PKI governance, operational transparency, compliance evidence, and relying-party trust evaluation.
Certificate Practice Statement (CPS) vs. Certificate Policy
A certificate policy defines what assurance and rules should apply. A CPS explains how the CA actually carries those rules out operationally.
Frequently Asked Questions
Why does a CPS matter?
Because relying parties and auditors need to understand whether the CA’s operations match its stated trust model.
Is a CPS only for public internet CAs?
No. Internal enterprise PKI programs can also benefit from clearly documented operating practice.
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