This is a “sequel” to the author’s previous post An End-to-End Prototype of PlayReady Protection with ACS Authentication and ACS Token Authorization.
In certain cases, full DRM protection may not be mandated or make economic sense. Instead, AES encryption can be an alternative. However, keep in mind that AES encryption is very different from and is not DRM. The differences between DRM and AES encryption can be summarized by the following table.