Media content protection utilizing public key cryptography
US6550011B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 7, 1999 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Oct 7, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2135
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for providing protection of content which may be transmitted over unsecure channels, including storage and transmission in bulk media, transmission over a network such as the Internet, transmission between components of an open system, and broadcast transmitted, to compliant storage devices and/or compliant use devices is disclosed. The technique for providing protection from unauthorized utilization of the content so stored is provided publicly in order to allow for those utilizing a conforming media device to master or generate content protected according to the present invention. According to a preferred embodiment, public key cryptography is utilized to identify compliant devices and to transmit cryptographic keys protecting content data. In the preferred embodiment content is protected using private key cryptography to optimize system performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.