Abstract: A secure content receiver includes a processing unit operable to request a data file from a remote device, to provide a first encryption key to the remote device, and to receive the requested data file and a key object from the remote device. The received data file is encrypted using the first encryption key. The key object imposes restrictions on the decryption of the data file. The receiver further includes a first security module that is coupled to the processing unit and that is operable to decrypt the data file according to the restrictions imposed by the key object.

Abstract: A computer system according to a preferred embodiment of the invention may have either a local or a remote low-voltage power button. The arrangement is freely reconfigurable by the end user. A socket or plug is accessible from the exterior of the enclosure of a main unit. On the inside of the enclosure, the socket or plug is coupled to circuitry for sensing activity in a power button. The socket or plug is adapted to removably mate with a corresponding socket or plug on either a low-voltage power button or a low-voltage power button extender assembly. The low-voltage power button may comprise simply a switch integrated with a socket or plug. The low-voltage power button extender assembly may comprise a switch coupled to a socket or plug by means of a flexible cable.