Explanation
The best way to safeguard the encryption keys is to ensure that they are stored in a cryptographic vault. A cryptographic vault is a secure hardware or software module that provides cryptographic services and protects the keys from unauthorized access, modification, or disclosure. A cryptographic vault can also provide other functions, such as key generation, key backup, key rotation, key destruction, and key auditing. A cryptographic vault can enhance the security and privacy of the encrypted data by preventing key compromise, leakage, or misuse. A cryptographic vault can also comply with the security standards and best practices for key management, such as the ISO/IEC 27002, NIST SP 800-57, or PCI DSS. References:
* [ISACA Glossary of Terms]
* [ISACA CDPSE Review Manual, Chapter 3, Section 3.3.3]
* [ISACA Journal, Volume 4, 2019, "Key Management in the Multi-Cloud Environment"]
* [ISACA CDPSE Review Manual, Chapter 3, Section 3.3.4]