发明名称 |
METHOD FOR KEY-MANAGING USING HIERARCHICAL NODE TOPOLOGY AND METHOD FOR REGISTERING/DEREGISTERING A USER USING THE SAME |
摘要 |
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. |
申请公布号 |
KR20060090136(A) |
申请公布日期 |
2006.08.10 |
申请号 |
KR20050021845 |
申请日期 |
2005.03.16 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
HAN, SUNG HYU;KIM, BONG SEON;KIM, MYUNG SUN;YOON, YOUNG SUN;LEE, SUN NAM;LEE, JAE HEUNG |
分类号 |
H04L9/30;H04L9/08;H04L9/32 |
主分类号 |
H04L9/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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