Managing the key lifecycle in a cloud computing environment involves controlling the creation, distribution, usage, rotation, storage, and revocation of cryptographic keys to ensure data security and compliance. Here's a breakdown with examples and Tencent Cloud recommendations:
Key Creation: Generate keys securely using cloud-native tools. For example, Tencent Cloud Key Management Service (KMS) allows users to create symmetric or asymmetric keys with customizable rotation policies.
Key Distribution: Securely share keys with authorized entities. Tencent Cloud KMS supports envelope encryption, where data keys are encrypted under a master key stored in KMS, ensuring safe distribution.
Key Usage: Control access to keys via policies. Tencent Cloud KMS integrates with Identity and Access Management (IAM) to enforce least-privilege access, ensuring only authorized services or users can use keys.
Key Rotation: Regularly update keys to mitigate risks. Tencent Cloud KMS supports automatic key rotation for symmetric keys, reducing manual intervention and enhancing security.
Key Storage: Store keys in a secure, isolated environment. Tencent Cloud KMS stores master keys in hardware security modules (HSMs), providing FIPS 140-2 Level 3 compliance.
Key Revocation: Disable or delete keys when no longer needed. Tencent Cloud KMS allows immediate key disabling or scheduled deletion, preventing unauthorized access.
Example: A financial service on Tencent Cloud uses KMS to encrypt customer data. Keys are automatically rotated every 90 days, and access is restricted via IAM policies. When a key is compromised, it’s immediately revoked to prevent further use.