To comply with GDPR requirements and manage encryption keys for workloads across multiple Google Cloud services, customer-managed encryption keys (CMEK) offer a suitable solution. Customer-managed encryption keys (B): CMEK allows you to create and manage encryption keys using Google Cloud Key Management Service (KMS). You maintain full control over the key lifecycle, including key rotation and destruction. CMEK can be used with various Google Cloud services, such as Compute Engine, Google Kubernetes Engine, Cloud Storage, BigQuery, and Pub/Sub, ensuring consistent and compliant encryption across your environment. Using CMEK, you can implement data protection by design, aligning with GDPR requirements by ensuring that encryption keys are appropriately managed and secured.
Reference: Customer-Managed Encryption Keys Documentation Encryption at Rest in Google Cloud