A digital rights management system (FIG. 1) for a mobile telephone (10), including a controlled content disk (16) to store content in an encrypted format, and a mobile telephone processor (18) to run a plurality of mobile telephone applications (36, 38, 40) and a secure device driver (22) thereon, the mobile telephone processor (18) being operationally associated with the controlled content disk (16), the mobile telephone applications (36, 38, 40) being unable to decrypt content from the encrypted format, the secure device driver (22) having a receiving module (24) to receive a request from one of the mobile telephone applications (36, 38, 40) to access the content, a validation module (26) to validate the request, and a transport module (28) to substantially directly transfer the content to the one mobile telephone application, contingent upon a positive result of the validating of the validation module (26). Related apparatus and methods are also described.