EvidenceSheet
CSA CCM v4.1 · CEK - Cryptography, Encryption & Key Management

CEK-20 Key Recovery

Processes, procedures and technical measures are defined, implemented and evaluated to weigh the risk to operational continuity against the risk of exposure of the keying material, and of the data protected by it, if control of that material is lost, taking legal and regulatory requirements into account.

Source: CSA CCM v4.1, CEK-20. The statement above is our statement of the clause, read from the published text and cited so you can check it against the official text, not the instrument verbatim. Open CSA CCM v4.1 in the compliance library.

Version 4.1 adds 11 controls (among them API security, log sanitisation and a service bill of materials) and renumbers several domains. CSA accepts v4.0.x during its transition; if your STAR assessment is still on v4.0.1, check the numbering against it.

4
artefacts
1
held by a system
3
at each review
moderate
to go live
Backup / DR tooling
where the evidence lives
teal = a system already holds it · olive = produced at each review. To go live: easy when half or more of the artefacts are already held by a system, moderate from a quarter to a half, hard below a quarter.

These are the artefacts auditors commonly ask for on this requirement, our guidance rather than text from the standard. Your assessor decides what is sufficient in your context, and asks for samples across the period when a report covers one.

system holds itEvidence a system already holds

  • Key escrow or backup configuration · Backup / DR tooling

periodic reviewEvidence produced at each review

  • Key recovery procedure and risk assessment · Policy repository / GRC workspace
  • Records of recovery tests · Document repository
  • Decision records weighing continuity against exposure · Document repository

governing documentDocuments that govern the control

none for this control

First move

Start with the 1 of 4 artefacts that already live in a system (Backup / DR tooling); keep the periodic reviews but log each one as a dated record with a named reviewer.

Common gaps auditors find

Do this for your whole sheet

Paste the rows you run your controls from and get this mapping for every control at once, with the periodic-review ones flagged and a first move per row. No account for the first run.

Build my evidence sheet

CEK-19 Key Compromise · CEK-21 Key Inventory Management