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:
Sep. 18, 2012
Filed:
Jun. 26, 2007
Applicants:
Dae Youb Kim, Seoul, KR;
MI Suk Huh, Suwon-si, KR;
Tae-chul Jung, Seongnam-si, KR;
Hwan Joon Kim, Seoul, KR;
Inventors:
Dae Youb Kim, Seoul, KR;
Mi Suk Huh, Suwon-si, KR;
Tae-Chul Jung, Seongnam-si, KR;
Hwan Joon Kim, Seoul, KR;
Assignee:
Samsung Electronics Co., Ltd., Suwon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A group key update method and a group key update apparatus for updating a key of members in a group are provided. The group key update method includes selecting a sub-root node among nodes on the binary tree; performing a node change with respect to the group according to a type of the sub-root node, and generating a changed binary tree; and performing a node key update with respect to the changed binary tree.