New patents are issued by the USPTO on Tuesdays. Both of today's Spotlight Patents concern aspects of digital rights management. Assigned to Intertrust, the first patent addresses techniques for trusted storage systems. Assigned to Ericsson (SE), the second patent addresses compression and decompression techniques for DRM license information delivery.
9,641,490, "Trusted storage systems and methods," assigned to Intertrust Technologies.
Systems and methods are disclosed for providing a trusted database system that leverages a small amount of trusted storage to secure a larger amount of untrusted storage. Data are encrypted and validated to prevent unauthorized modification or access. Encryption and hashing are integrated with a low-level data model in which data and meta-data are secured uniformly. Synergies between data validation and log-structured storage are exploited.
9,641,910, "Compression and decompression techniques for DRM license information delivery," assigned to Ericsson (SE).
Techniques for compressing and decompressing license information for Digital Rights Management are described. A method implementation of a technique of creating for a plurality of client devices or client device groups compressed license information comprises the steps of creating a template and a table. The table comprises at least one first license part common to licenses for the plurality of client devices or client device groups and one or more placeholders for one or more second license parts specific for a dedicated client device or client device group. The table comprises, for each client device or client device group and for a given placeholder, replacement information specific for that client device or client device group. The method further comprises sending the template and table for delivery as compressed license information to the client devices or client device groups.