How album handles drm – Audiovox SMT5600 User Manual

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Smartphone User Manual

Using your camera

Smartphone User Manual

Using your

camera

How Album handles DRM

DRM is Digital Rights Management, a method of control-

ling the usage of protected media objects after they have

been downloaded. Some digital media files, such as songs

downloaded from online stores, are encrypted to prevent the

files from being unlawfully distributed or shared. Content

providers use the DRM technology to encrypt these files

when applicable. During the encryption process, the content

provider creates a license which specifies how and when

the file can be used.
For example, a content provider could create a license that

allows you to play a certain file on your computer, but not on

your Smartphone. Or, a license that allows you to play a cer-

tain file on your Smartphone, but perhaps only for a month,

or perhaps only a certain number of times. Files that have

licenses associated with them are called protected files.
Currently, there are three main methods (listed below)

for delivering DRM-encrypted content and any applicable

associated rights. The DRM-enabled content file and the

“rights object” are separate components. The rights object

is the encryption key, and also includes the instructions on

how the content can be used.
Forward Lock — This type of file is not encrypted, but

instead there is a flag associated with it that does not allow

you the option to send/forward it from your Smartphone.

There can only be one instance of the file.
Combined Delivery — The file is DRM-encrypted and is

delivered to your Smartphone together with its rights object.

In this case, the right is typically a preview or some other

limited execution.
Separate Delivery — The encrypted DRM file is downloaded

to your Smartphone alone, and the rights object is delivered

separately through some other secure channel such as WAP

Push, a special form of SMS with binary content in it.