US 2007/0192252 A1 · Cryptographic methods, apparatus and systems for storage media electronic rights management in closed and connected appliances

Abstract

A rights management arrangement for storage media such as optical digital video disks (DVDs, also called digital versatile disks) provides adequate copy protection in a limited, inexpensive mass-produceable, low-capability platform such as a dedicated home consumer disk player and also provides enhanced, more flexible security techniques and methods when the same media are used with platforms having higher security capabilities. A control object (or set) defines plural rights management rules for instance, price for performance or rules governing redistribution. Low capability platforms may enable only a subset of the control rules such as controls on copying or marking of played material. Higher capability platforms may enable all (or different subsets) of the rules. Cryptographically strong security is provided by encrypting at least some of the information carried by the media and enabling decryption based on the control set and/or other limitations. A secure “software container” can be used to protectively encapsulate (e.g., by cryptographic techniques) various digital property content (e.g., audio, video, game, etc.) and control object (i.e., set of rules) information. A standardized container format is provided for general use on/with various mediums and platforms. In addition, a special purpose container may be provided for DVD medium and appliances (e.g., recorders, players, etc.) that contains DVD program content (digital property) and DVD medium specific rules. The techniques, systems and methods disclosed herein are capable of achieving compatibility with other protection standards, such as for example, CGMA and Matsushita data protection standards adopted for DVDs. Cooperative rights management may also be provided, where plural networked rights management arrangements collectively control a rights management event on one or more of such arrangements.

Claims60

Dependent claims

A system for packaging rights-protected electronic information, the system comprising:

a first device configured to generate first electronic information, the first device including a secure node configured to securely associate first control information with the first electronic information, the first control information including one or more controls specifying one or more permitted uses of the first electronic information;
a second device configured to generate second electronic information, the second device including a secure node configured to securely associate second control information with the second electronic information, the second control information including one or more controls specifying one or more permitted uses of the second electronic information;
and
a third device configured to receive the first electronic information, the second electronic information, the first control information, and the second control information, and to write the first electronic information, the second electronic information, and a control set to a storage medium in accordance with at least the first control information and the second control information, wherein the control set includes one or more controls from the first control information and one or more controls from the second control information.

1 more element

Dependencies are inferred from the claim text.

Cryptographic methods, apparatus and systems for storage media electronic rights management in closed and connected appliances

Life of this patent

Cryptographic methods, apparatus and systems for storage media electronic rights management in closed and connected appliances

Life of this patent

Abstract

Claims60