CEK-20 Key Recovery
Weigh the risk of losing control of keying material against the risk to operational continuity if a key cannot be recovered, and set recovery arrangements on that basis.
4
artefacts
0
held by a system
2
at each review
hard
to go live
Document repository
where the evidence lives
teal = a system already holds it · olive = produced at each review
system holds itEvidence a system already holds
none for this control
periodic reviewEvidence produced at each review
- The decision record showing which keys are recoverable and which are not · Document repository
- Test evidence that recovery works where it is provided · Document repository
governing documentDocuments that govern the control
- The documented analysis comparing exposure risk against continuity risk · Document repository
- Key recovery or escrow arrangements and their access controls · Document repository
First move
This control is evidenced by people and documents, not systems. Put the document under version control with an owner and review date, and log each review as a record with reviewer and date. Do not try to automate it.
Common gaps auditors find
- Escrow implemented for convenience with no risk analysis behind it
- No recovery arrangement for keys whose loss would be unrecoverable for the business
- Recovery arrangement never tested
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