[ceph-users] Rados object transformation

Hi folks, Is it possible through object classes to transform object content? For example, I'd like this transformer to change the content of the object when it is read and when it is written. In this way, I can potentially encrypt the object content in storage without the need to make ceph/osd to do encryption/decryption. It could be taken care of by the object class itself. Thanks,Yixin