Global Patent Index - EP 1847066 A4

EP 1847066 A4 20130918 - KEY MANAGEMENT METHOD USING HIERARCHICAL NODE TOPOLOGY, AND METHOD OF REGISTERING AND DEREGISTERING USER USING THE SAME

Title (en)

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

Title (de)

SCHLÜSSELVERWALTUNGSVERFAHREN UNTER VERWENDUNG HIERARCHISCHER KNOTENTOPOLOGIE UND DIESES NUTZENDES VERFAHREN ZUR REGISTRIERUNG UND DEREGISTRIERUNG VON BENUTZERN

Title (fr)

PROCEDE DE GESTION DE CLES DANS LEQUEL EST UTILISEE UNE TOPOLOGIE NODALE HIERARCHISEE, ET PROCEDE D'ENREGISTREMENT ET DE RETRAIT D'ENREGISTREMENT D'UN UTILISATEUR DANS LEQUEL EST UTILISE LEDIT PROCEDE DE GESTION DE CLES

Publication

EP 1847066 A4 20130918 (EN)

Application

EP 06715877 A 20060206

Priority

  • KR 2006000425 W 20060206
  • US 65012705 P 20050207
  • KR 20050021845 A 20050316

Abstract (en)

[origin: WO2006083141A1] A key management, user registration and deregistration for a digital rights management (DRM) system in a home network, using a hierarchical node topology. In the key management, node information is generated by allocating a pair of keys (a public key and a private key) to each node. A node tree is made by generating link information using the pair of keys and a content key. The link information is delivered from an upper node to a lower node using the node tree. The link information is obtained by encrypting a private key of a 'TO' node using a public key of a 'FROM' node. Accordingly, it is possible to realize a DRM system that protects content and easily accomplishes a binding mechanism and a revocation mechanism.

IPC 8 full level

H04L 9/08 (2006.01)

CPC (source: EP)

H04L 9/0822 (2013.01); H04L 9/0825 (2013.01); H04L 9/0836 (2013.01); H04L 9/0891 (2013.01); H04L 2209/60 (2013.01); H04L 2209/603 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB IT NL

DOCDB simple family (publication)

WO 2006083141 A1 20060810; EP 1847066 A1 20071024; EP 1847066 A4 20130918

DOCDB simple family (application)

KR 2006000425 W 20060206; EP 06715877 A 20060206