Patent · US Active

Processing multi-key content

US8139769B2 · kind B2 · utility

0Cited by

4References

3Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Jian Zhang · Shanghai, CN
Ling Shao · Sheffield, GB
Dong Xie · Beijing, CN

Key dates

Filing date	Apr 6, 2009
Grant date	Mar 20, 2012
Priority date	—
Expiry date	Jul 30, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG06F21/10
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Multi-key content processing systems and methods, for processing content with at least one distribution target position. Each of the distribution target positions corresponds to an authorization key. An example method includes the steps of: encrypting said content with a content key; forming a key link based on said content key and the authorization key of said at least one distribution target position; and attaching said key link to the encrypted content.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.