Method and system to securely distribute content via a network
US6993137B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 2002 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | Aug 2, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/3233
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system to distribute encrypted content via a network commences when a content provider generates a set of session keys and encrypts content with the set of session keys. The content provider communicates the set of session keys to a content distributor, which generates a set of encrypted session keys by encrypting the set of session keys with a user key. The content distributor transmits the encrypted content and the encrypted session keys to a content destination. The content distributor also transmits the user key to the content destination, allowing the content destination to decrypt the set of session keys with the user key, and thereby use the set of decrypted session keys to decrypt the content. In a further embodiment of the invention, the session keys are a time-varying sequence of session keys.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.