使用客户端加密将DynamoDB表导出到S3

I'm trying to use Data Pipeline to export data to s3 from Dynamo. However, I can't figure out how to apply client side encryption before the file is written to s3. Is there a way to do this with Data Pipeline? I am able to set up everything except the client side encryption with Data Pipeline. The ideal flow is a dynamo source node, an activity to encrypt, and a S3 destination node.I'm trying to use Data Pipeline to export data