CRY · Cryptography and Key Management
CRY-03 Review of Cryptography Practices
New in C5:2026
Basic criterion
The cloud service provider ensures that encryption, authentication and key management practices are regularly audited in accordance with COM-02 and COM-03 to identify and address potential vulnerabilities. At a minimum, reviews are performed annually and immediately following security incidents involving cryptographic components.
As part of the reviews, the cloud service provider determines if the cryptographic practices align with the state of the art and updates them as needed.
Supplementary information
The cloud service provider applies the cryptographic change management process (cf. CRY-02) when updating the cryptographic practices to align with the state of the art.
Related criteria
BSI text from C5:2026 and its changelog: © Federal Office for Information Security 2026, reproduced unchanged under CC BY-ND 4.0. Unofficial site, not affiliated with BSI. Licence and sources