US 8,694,799 B2 · System and method for protection of content stored in a storage device

Abstract

The invention provides a system and method for content protection. A system according to an embodiment includes a media center connectable to a mobile secure and protection keyring associated with an identifier and with a media Key block MKB. The media center includes: a unique identifier identifying the media center MC_UID, a set of device keys DK; storage means for storing files identified by respective file identifiers; and a processing unit comprising file encryption means for encrypting each file before storage in the storage means, using a title key (Kt) computed from the identifier MC_UID of the media center and for encrypting the title key Kt from the set of device keys DK of the media center, and from the identifier and the media key block MKB of the mobile secure and protection keyring, the media center being further provided to write the encrypted title key (eKt) in association with the file identifier of the file to the mobile secure and protection keyring.

Claims17

Dependent claims

A system for content protection comprising a master storage device connectable to a mobile master memory unit associated with a memory unit identifier (media_id) and with a set of memory unit keys (MKB), wherein the master storage device comprises:

a unique device identifier identifying the master storage device (MC_UID);
a set of protection keys (DK);
a storage component for storing files identified by respective file identifiers;
and
a processing unit comprising a file encryption component for encrypting each file before storage in the storage component of the master storage device, using a title key (Kt) computed from the device identifier (MC_UID) of the master storage device and for encrypting the title key (Kt) using the set of protection keys (DK) of the master storage device, and the memory unit identifier (media_id) and the set of memory unit keys (MKB) of the mobile master memory unit, the master storage device being further provided to write the encrypted title key (eKt) in association with the file identifier of the file to the mobile master memory unit.

2 more elements

A method for content protection, the method comprising:

providing a master storage device comprising a storage component for storing files identified with respective file identifiers, the master storage device being provided with a unique device identifier (MC_UID) identifying the master storage device, and a set of protection keys (DK);
providing a first connection to connect at least one mobile master memory unit associated with a memory unit identifier (media_id) and a set of memory unit keys (MKB) to the master storage device;
in response to a reception of a file to be stored in the storage component of the master storage device, encrypting the file, using an encrypted title key (eKt), wherein a title key (Kt) is computed from the device identifier (MC_UID) of the master storage device and wherein the title key (Kt) is encrypted to provide the encrypted title key (eKt) using the set of protection keys (DK) of the master storage device, and the memory unit identifier (media_id) and the set of memory unit keys (MKB) of the mobile master memory unit;
writing the encrypted title key in association with the file identifier of the file to the mobile master memory unit;
and
storing the encrypted files in the storage of the master storage device.

3 more elements

Dependencies are inferred from the claim text.

System and method for protection of content stored in a storage device

Life of this patent

System and method for protection of content stored in a storage device

Life of this patent

Abstract

Claims17