KEY MANAGEMENT METHOD USING HIERARCHICAL NODE TOPOLOGY, AND METHOD OF REGISTERING AND DEREGISTERING USER USING THE SAME - Patent 1847066

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EP 1 847 066 A1

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(43)	Date of publication:
	24.10.2007 Bulletin 2007/43

(21)	Application number: 06715877.4

(22)	Date of filing: 06.02.2006

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International Patent Classification (IPC):

H04L 9/30^(2006.01)

(86)	International application number:
	PCT/KR2006/000425

(87)	International publication number:
	WO 2006/083141 (10.08.2006 Gazette 2006/32)

(84)	Designated Contracting States:
	DE FR GB IT NL

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Priority:

07.02.2005 US 650127 P
16.03.2005 KR 20050021845

(71)	Applicant: Samsung Electronics Co., Ltd.
	Suwon-si 442-742 Gyeonggi-do (KR)

(72)	Inventors:
	HAN, Sung-Hyu, 102-1006 Family Apt. Seoul 138-767 (KR) KIM, Bong-Seon, 903-411 Jugong Apt. Gyeonggi-do 463-724 (KR) KIM, Myung-Sun, 105-104 Daewoo Apt. Gyeonggi-do 437-769 (KR) YOON, Young-Sun, 511-704 Sangrok Apt. Gyeonggi-do 441-742 (KR) LEE, Sun-Nam Gyeonggi-do 443-848 (KR) LEE, Jae-Heung Gyeonggi-do 443-848 (KR)

(74)	Representative: Robinson, Ian Michael
	Appleyard Lees 15 Clare Road GB-Halifax, West Yorkshire HX1 2HY GB-Halifax, West Yorkshire HX1 2HY (GB)

(54)	KEY MANAGEMENT METHOD USING HIERARCHICAL NODE TOPOLOGY, AND METHOD OF REGISTERING AND DEREGISTERING USER USING THE SAME