kmsKeyIdentifier

The identifier of the KMS customer managed key for EventBridge to use, if you choose to use a customer managed key to encrypt pipe data. The identifier can be the key Amazon Resource Name (ARN), KeyId, key alias, or key alias ARN.

If you do not specify a customer managed key identifier, EventBridge uses an Amazon Web Services owned key to encrypt pipe data.

For more information, see Managing keys in the Key Management Service Developer Guide.