Optional
KmsThe Amazon Resource Name (ARN) of the AWS KMS key you want to use to encrypt the Amazon S3 objects. This parameter is required if you choose aws:kms as an encryption type.
The type of server side encryption used for encrypting the objects in Amazon S3.
Encryption configuration of the export job. Includes the encryption type in addition to the AWS KMS key. The KMS key is only necessary if you chose the KMS encryption type.