Azure Media Services is getting a big update this week in NABShow 2014. Now you have more options to secure your media delivery – by using AES clear key dynamaic encryption or Microsoft PlayReady content access and protection technology. This feature allows you to serve both encrypted HLS and Smooth Streaming to your client devices.
AES Clear Key Dynamic Encryption Feature explained
Now Azure Media Services allow you to deliver Http-Live-Streaming (HLS) and Smooth Streams encrypted with Advanced Encryption Standard (AES) (using 128-bit encryption keys). Media Services also provides the key delivery service that delivers encryption keys to authorized users. The diagram below demonstrate how this feature works.