is a Digital Rights Management
(DRM) system invented by the Open Mobile Alliance
, whose members represent mobile phone manufacturers (e.g. Nokia
), mobile system manufacturers (e.g. Ericsson
), mobile phone network operators (e.g. Vodafone
, Deutsche Telekom
), and information technology
companies (e.g. Microsoft
). DRM provides a way for content creators to set enforced limits on the use and duplication of their content by customers. The system is implemented on many recent phones. To date, two versions of OMA DRM have been released: OMA DRM 1.0 and OMA DRM 2.0.
In order to ensure that all manufacturers' implementations of OMA DRM can work with each other, the Open Mobile Alliance provides specifications and test tools for OMA DRM.
The OMA DRM group is chaired by Sergey Seleznev (Samsung Electronics
OMA DRM 1.0
OMA DRM version 1.0 was first drafted in November 2002, and approved in June 2004. It provides basic Digital Rights Management, without strong protection. The standard specifies three main methods: Forward Lock, Combined Delivery (combined rights object / media object), and Separate Delivery (separated rights object + encrypted media object). Forward Lock prevents the user from forwarding
content such as ringtones
and wallpapers on their phone.
The content can be distributed using HTTP
OMA DRM 2.0
Version 2.0 was drafted in July 2004... Read More