Information processing apparatus, information processing method, and computer program
US8176565B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2006 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Apr 3, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2541
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An information processing apparatus is provided. The information processing apparatus includes a cryptographic processor configured to generate encrypted data associated with a content management unit by executing encryption using a unit key associated with the content management unit, the content management unit being defined as a unit for controlling usage of content; a management-information controller configured to generate or update a unit key file storing the unit key and a usage-control-information file associated with the content management unit as management information associated with the encrypted data generated by the cryptographic processor; and a recorder configured to record the encrypted data, the unit key file, and the usage-control-information file on an information recording medium according to a predetermined data recording format.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.