What evidence does ISO 27001:2022 8.24 need?

Statement of Applicability entry for control A.8.24, showing inclusion or justified exclusion, implementation status and the risks it treats. The topic-specific cryptography policy with approved algorithms, key lengths, protocols and usage by information classification. Key management procedures covering generation, distribution, storage, rotation, revocation, recovery, backup, destruction and activation periods

8.24 of ISO 27001:2022, stated here in our words and cited to that clause.

Does it map to the other framework?

Yes, to 1 criteria in the other framework, each with a confidence and a reason. A link is a topical overlap, not a legal equivalence.

ISO 27001:2022 8.24 evidence: Use of cryptography

ISO 27001:2022 8.24: Use of cryptography

ISO 27001:2022 8.24 covers Use of cryptography. The held text names 5 evidence records for it, the first being Statement of Applicability entry for control A.8.24, showing inclusion or justified exclusion, implementation status and the risks it.... The common gap an assessor flags is Deprecated algorithms or short keys remain in use because no approved list is enforced.

The organization is to define and apply rules for using cryptography effectively, key management included. Purpose (stated in ISO/IEC 27002:2022): makes cryptography work correctly to keep information confidential, genuine or unaltered as business, security and legal needs require. As an Annex A reference control, it is compared with the controls determined in risk treatment (6.1.3 c) and recorded in the Statement of Applicability as included or excluded, with the justification and implementation status (6.1.3 d); implementation guidance is ISO/IEC 27002:2022 8.24.

What evidence supports 8.24?

Annex A technological controlStatement of Applicability entry for control A.8.24, showing inclusion or justified exclusion, implementation status and the risks it treats
Annex A technological controlThe topic-specific cryptography policy with approved algorithms, key lengths, protocols and usage by information classification
Annex A technological controlKey management procedures covering generation, distribution, storage, rotation, revocation, recovery, backup, destruction and activation periods
Annex A technological controlKey inventory or HSM and key management service records with logs of key management activity
Annex A technological controlEvidence of encryption on endpoints, removable media and data in transit, aligned with the policy

Where this requirement comes from

This is our own statement of ISO 27001:2022 8.24, read from the copy we hold (licensed complete copy) and stated in our words, not the standard verbatim. The framework as we hold it.

Common gaps an assessor flags

Deprecated algorithms or short keys remain in use because no approved list is enforced
Keys have no defined lifetime and are never rotated
Private keys are stored alongside the data they protect or in source code
Expired or compromised certificates are not revoked promptly

How it maps to SOC 2

CC6.7 high Use of cryptography protects data in transmission and on movable media.

A link is a topical overlap with a confidence and a reason. It does not establish that meeting one requirement satisfies the other, and it is not certification.