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Cloud Controls Matrix
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CEK-08: CSC Key Management Capability
CSC Key Management Capability
CEK-08: Are CSPs providing CSCs with the capacity to manage their own data encryption keys?
Key management capability is the process of CSPs providing CSCs the capability to manage CSC-owned or generated encryption keys.
a. The CSC and CSP should agree on the definition and scope of CSC-managed keys and document this (shared responsibility) in the SLA, applicable contracts, policies, and procedures.
b. The CSP should allow the CSC to manage policies, procedures, and processes.
c. The CSP should empower the CSC to manage keys and data encryption keys.
d. The CSP should enable the CSC to manage key encryption keys or master keys used to encrypt data keys.
e. The CSP should allow the CSC to use the key management system (e.g., transactions, reporting, etc.).
f. Optionally, the CSC should supply CSC-generated master encryption keys using bring-your-own-key (BYOK) mechanisms per the SLA.
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

CSPs must provide the capability for CSCs to manage their own data encryption keys.