The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 2016
Filed:
Aug. 22, 2012
Applicants:
Shlomi Dolev, Omer, IL;
Niv Gilboa, Tel Aviv, IL;
Marina Kopeetsky, Ashdod, IL;
Inventors:
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/08 (2006.01); H04N 21/2347 (2011.01); H04N 21/266 (2011.01); H04N 21/4405 (2011.01); H04N 21/4623 (2011.01); H04L 9/30 (2006.01);
U.S. Cl.
CPC ...
H04L 9/0816 (2013.01); H04L 9/088 (2013.01); H04L 9/0833 (2013.01); H04L 9/0861 (2013.01); H04L 9/0866 (2013.01); H04L 9/0891 (2013.01); H04L 9/3073 (2013.01); H04N 21/2347 (2013.01); H04N 21/26606 (2013.01); H04N 21/4405 (2013.01); H04N 21/4623 (2013.01); H04L 2209/24 (2013.01); H04L 2209/601 (2013.01);
Abstract
The invention is a method for broadcast encryption that allows a broadcaster to send encrypted data to a set of users such that only a subset of authorized users can decrypt said data. The method comprises modifications to the four stages of the basic Cipher-text Policy Attribute-Based Encryption techniques. The method can be adapted to transform any Attribute-Based Encryption scheme that supports only temporary revocation into a scheme that supports the permanent revocation of users.