Ensure that your Amazon Secrets Manager secrets (i.e. database credentials, API keys, OAuth tokens, etc) are encrypted with Amazon KMS Customer Master Keys (CMKs) instead of default encryption keys that Secrets Manager service creates for you, in order to have a more granular control over secret data encryption and decryption process, and meet compliance requirements.
By default, your secret information is encrypted using the default encryption key that Secrets Manager creates on your behalf. But when you use your own Amazon KMS Customer Master Key (CMK) to protect the secret data managed by AWS Secrets Manager service, you get full control over who can use the encryption key to access your secrets. Amazon Key Management Service (KMS) allows you to easily create, rotate, disable and audit Customer Master Keys created for your Secrets Manager secrets. Note: When using customer-managed CMKs to encrypt Secrets Manager secret data, the IAM user or role that needs to read the secret later must have the "kms:Decrypt" permission for that KMS CMK.
To determine the encryption status and configuration for your Amazon Secrets Manager secrets, perform the following actions:
To configure existing Amazon Secrets Manager secrets to encrypt their data using customer-managed KMS Customer Master Keys (CMKs), perform the following actions: