PCI DSS v4.0 · Requirement 3 Key Management
Signed custodian forms, ceremony scripts, attendance logs, HSM co-authentication, the evidence assessors request, listed.
The real finding
Teams securing cardholder data know they need strong encryption. But PCI DSS v4.0 Requirement 3 hinges on key management discipline, and that is where most assessment findings actually surface. If you can't produce the ceremony records and custodian forms your assessor expects, dual control and documented lifecycles become gaps you discover mid-assessment. This reference tells you what to have on file before the QSA asks.
Inside the reference
Before the assessment
Walk in with the artifacts assessors pull already gathered, rather than scrambling for them during fieldwork.
Point to which requirement each control satisfies, from 3.5.1 through 3.7.6, without guessing what a finding would hinge on.
Decide algorithms, key lengths, AES modes, and storage methods against concrete tables instead of vague guidance.
Work from entropy and generation through rotation, retirement, and compromise response, so no phase is left undocumented.
Grounded in the standards
It aligns to PCI DSS v4.0 Requirement 3 specifically, including the 3.7.x key management obligations and the definition of strong cryptography introduced in v4.0.
No. It is a practitioner reference for informational and educational purposes. Commerce Security Authority is not affiliated with or endorsed by the PCI Security Standards Council, and it does not replace guidance from your QSA.
Yes. The storage-method guidance covers HSMs, encrypted software key stores, and managed cloud KMS, including the customer-managed-key and FIPS-validation conditions that apply to each.
PCI DSS v4.0 Requirement 3
