C5 Field Guideunofficial

CRY · Cryptography and Key Management

CRY-11 Cryptographic Key Archival

1 sub-criterion

New in C5:2026

Basic criterion

CRY-11.01B

The cloud service provider has documented and implemented procedures and technical safeguards for the secure archiving of cryptographic keys. These include:

  1. Storage of archived keys in a repository to prevent unauthorised access;
  2. Restriction of access to archived keys to authorised personnel based on the principle of least privilege;
  3. Support of later recovery of information through archived keys;
  4. Retention of archived keys only for as long as needed and secure destruction afterwards; and
  5. Logging of all activities related to the storage and recovery of archived keys.

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