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:
Dec. 18, 2012
Filed:
Aug. 09, 2006
Applicant:
Young-sun Yoon, Suwon-si, KR;
Inventor:
Young-sun Yoon, Suwon-si, KR;
Assignee:
Samsung Electronics Co., Ltd., Suwon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of protecting digital contents includes: requesting an external device or service to perform a part of a process of decrypting encrypted contents which correspond to a leaf node among a plurality of leaf nodes in a tree used in a revocation mechanism according to whether the leaf node has been revoked; and decrypting the encrypted contents based on a response to the request. Therefore, even when the data storage capacity of a device is small or the data processing capability thereof is low, the contents encrypted according to a broadcast encryption scheme can be decrypted.