+CRY-16 Operational Continuity for Key Management
---+CRY-16.01B
---+CRY-16.02B

1. Übersicht

CRY-16 Operational Continuity for Key Management

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CRY-16.01B The cloud service provider has assessed the balance between conducting backups of key material stored in a Hardware Security Module (HSM) for key restoration and building redundancy or comparable measures for securing keys to ensure operational continuity. This assessment includes evaluating the risk of key exposure if control over the key material is lost. Decisions regarding whether to use the backups of keys or to establish redundancy are documented, and the chosen measures are reviewed for their effectiveness and compliance with contractual, legal and regulatory requirements.

The cloud service provider should consider the following options for safeguarding key material:

1. Backup of keys: Encrypted backups of keys are stored securely outside the HSM. The backup process should ensure that the keys are encrypted during storage and transit to prevent unauthorised access. Regular testing of backup and recovery procedures should be carried out to verify the effectiveness and integrity of the backups. Backups outside a HSM should only be considered after dilligent risk assessment.
2. Redundant HSMs: Implementing multiple HSMs in geographically dispersed locations to create redundancy to ensure that keys remain available and secure even if one HSM fails. The HSMs should be synchronised to ensure consistency of key material across all devices. Regular health checks and failover tests are necessary to ensure that redundancy mechanisms function correctly. The particular manner this redundancy is built may depend on the details of the contractual agreements between provider and customer. E.g. when the customer choose a particular location, zone or region, this choice also applies to the redundancy mentioned in this criterion.
CRY-16.02B Procedures for the recovery of lost or corrupted keys are in place.

The cloud service provider should consider the following options for safeguarding key material:

1. Backup of keys: Encrypted backups of keys are stored securely outside the HSM. The backup process should ensure that the keys are encrypted during storage and transit to prevent unauthorised access. Regular testing of backup and recovery procedures should be carried out to verify the effectiveness and integrity of the backups. Backups outside a HSM should only be considered after dilligent risk assessment.
2. Redundant HSMs: Implementing multiple HSMs in geographically dispersed locations to create redundancy to ensure that keys remain available and secure even if one HSM fails. The HSMs should be synchronised to ensure consistency of key material across all devices. Regular health checks and failover tests are necessary to ensure that redundancy mechanisms function correctly. The particular manner this redundancy is built may depend on the details of the contractual agreements between provider and customer. E.g. when the customer choose a particular location, zone or region, this choice also applies to the redundancy mentioned in this criterion.

1.1 Referenzen

1.2 Identifizierte Anforderungen

1.2 Related Regulation

2. Identifizierte Anforderungen

Anforderungen

3. Related Regulations

Regulations
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