Host device and method for super-distribution of content protected with a localized content encryption key
US9015479B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2011 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Oct 22, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a host device creates a super-distribution token by encrypting a content encryption key with a super-distribution key and stores the super-distribution token and encrypted content retrieved from a source storage device in a target storage device. In another embodiment, a host device provides a super-distribution token to a server, wherein the server is configured to generate an activation token from the super-distribution token, receive the activation token from the server, retrieve a content encryption key from the activation token, and decrypt encrypted content received from a storage device using the content encryption key retrieved from the activation token.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.