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:
Jun. 17, 2014
Filed:
Mar. 22, 2012
Hwan-joon Kim, Seoul, KR;
Dae-youb Kim, Seoul, KR;
Weon-il Jin, Suwon-si, KR;
Sung-joon Park, Seoul, KR;
Hwan-joon Kim, Seoul, KR;
Dae-youb Kim, Seoul, KR;
Weon-il Jin, Suwon-si, KR;
Sung-joon Park, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An apparatus and method for generating a key for a broadcast encryption. The apparatus includes a node secret generator for managing a user that receives broadcast data in a tree structure and for generating a unique node secret for each node in the tree structure. The apparatus also includes an instant key generator for temporarily generating an instant key used at all nodes in common in the tree structure, and a node key generator for generating a node key for each node by operating the node secret generated at the node secret generator and the instant key generated at the instant key generator. Thus, key update can be efficiently achieved.