Snapshot Pro, Amazon S3 option for server side encryption

To meet certain federally mandated requirements (e.g., HIPAA), encryption of backups at rest is essential. Consider supporting the option to store the S3 object (the snapshot) using server side encryption. Additionally if the option is enabled, allow the site admin to optionally enter an AWS KMS Key ID specifying the IAM managed KMS to use.

References:
http://docs.aws.amazon.com/AmazonS3/latest/dev/SSEUsingRESTAPI.html
http://docs.aws.amazon.com/AmazonS3/latest/dev/UsingKMSEncryption.html