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Cloud Controls Matrix
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CEK-16: Key Suspension
Key Suspension
CEK-16: Are processes, procedures, and technical measures to monitor, review and approve key transitions (e.g., from any state to/from suspension) being defined, implemented, and evaluated to include legal and regulatory requirement provisions?
Suspended keys are not used for a period.
a. Keys may be suspended for leaves of absence or suspicion of compromise.
b. Suspensions should be investigated before transitioning to activation, revocation, or replacement.
c. Suspended keys should not be used to encrypt data, but they can decrypt data.
d. Do not process encryption applied after the beginning of a suspension period.
e. All relevant transitions/activity should be recorded (logged) in the inventory management system (CKMS).
Control implemented
Not applicable - A “N/A” answer indicates that the portion of the control in question is out of scope of the assessment. The “SSRM control ownership” column is to be left blank (e.g., greyed out), and optionally the CSP may explain why it is the case (“CSP Implementation Description”).
No - A “No” answer indicates that the portion of the control in question is not implemented, while in scope of the assessment. The CSP has to assign the implementation responsibility of the control to the relevant party under column “SSRM control ownership”, and optionally elaborate on the “why” (has not been implemented), and “what” has to be done for its implementation by that party.
Yes - A “Yes” answer indicates that the portion of the control in question is implemented. The CSP indicates the responsible and accountable parties (SSRM control ownership), and optionally elaborates on the implementation “how-to” per relevant party CSP and/or CSC.
Control ownership
CSP-owned - The CSP is entirely responsible and accountable for the CCM control implementation.
CSC-owned - The Cloud Service Customer (CSC) is entirely responsible and accountable for the CCM control implementation.
Third-party - The third-party CSP in the supply chain (e.g., an IaaS provider) is responsible for CCM control implementation, while the CSP is fully accountable.
Shared CSP and CSC - Both the CSP and CSC share CCM control implementation responsibility and accountability.
Shared CSP and third party - Any CCM control implementation responsibility is shared between CSP and the third party, but the CSP remains fully accountable.
Description

Define, implement and evaluate processes, procedures and technical measures to monitor, review and approve key transitions from any state to/from suspension, which include provisions for legal and regulatory requirements.