Systems and methods for one-to-many secure video encryption
US8171564B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2009 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | Oct 5, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video encryption/decryption scheme is provided allowing an originator of video content to encrypt the video content using a session key, wherein the encrypted content and an encrypted form of the session key are provided to a destination. The session key is encrypted using a long term key value, and the long term key value itself is encrypted using shared secret information that is only stored in the main memory of the originator and destination's systems. The long term key is encrypted, typically by a third party, and provided to the originator and destination systems for encrypting/decrypting the session key. The third party also provides a pass phrase file, which the originator and destination systems can use as input with shared secret information to a certain cryptographic hashing algorithm to encrypt/decrypt the long term key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.