Super-distribution of protected digital content
US6983371B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2000 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Mar 3, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/60
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Briefly according to the present invention, a system, computer readable medium and method to deliver encrypted digital content to from a first system for playing the content to a second system for playing the content. The method on the first user system comprising the steps of: reading from a computer readable medium metadata which has previously been associated with the content; selecting from the metadata associated content to decrypt; establishing a secure connection with an authorization authority, such as a clearinghouse, for decrypting the key used to encrypt the content; receiving a secure container containing the decrypting key for decrypting at least part of the previously encrypted content as permitted; decrypting the content and then encrypting the content with a new encryption key that is generated locally on the end user system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.