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    METHOD OF MANAGING GROUP KEY FOR SECURE MULTICAST COMMUNICATION
    1.
    发明申请
    METHOD OF MANAGING GROUP KEY FOR SECURE MULTICAST COMMUNICATION 审中-公开
    用于安全多播通信的组密钥管理方法

    公开(公告)号：US20110249817A1

    公开(公告)日：2011-10-13

    申请号：US13133920

    申请日：2009-05-13

    申请人： Jee Hyun Park ,  Jung Hyun Kim ,  Jung Soo Lee ,  Yeon Jeong Jeong ,  Do-Won Nam ,  Kisong Yoon

    发明人： Jee Hyun Park ,  Jung Hyun Kim ,  Jung Soo Lee ,  Yeon Jeong Jeong ,  Do-Won Nam ,  Kisong Yoon

    IPC分类号： H04L9/08

    CPC分类号： H04L9/0822 ,  H04L9/0825 ,  H04L9/0836 ,  H04L9/0891 ,  H04L12/185 ,  H04L63/065

    摘要： A group key management method for secure multicast communication includes: creating a tree having a root node, internal nodes and leaf nodes to manage group keys of a receiver group by a group key management server; generating user keys of all nodes excluding the root node in the tree on the basis of Chinese Remainder Theorem; assigning the leaf nodes of the tree to users of the receiver group; and sending the user keys of the leaf nodes to the corresponding users for group key management. Further, the group key management method for secure multicast communication includes generating group keys of all non-leaf nodes; computing a solution of congruence equations based on the user key and group key by using Chinese Remainder Theorem for each non-leaf node; and multicasting a group key update message to each user of the respective leaf nodes.

    摘要翻译： 用于安全组播通信的组密钥管理方法包括：创建具有根节点，内部节点和叶节点的树，以通过组密钥管理服务器管理接收者组的组密钥; 根据中国剩余定理生成树中除根节点之外的所有节点的用户密钥; 将树的叶节点分配给接收者组的用户; 并将叶节点的用户密钥发送给相应的用户进行组密钥管理。 此外，用于安全组播通信的组密钥管理方法包括生成所有非叶节点的组密钥; 通过对每个非叶节点使用中国剩余定理，基于用户密钥和群密钥计算一致等式的解; 以及将组密钥更新消息多播到各个叶节点的每个用户。

    APPARATUS AND METHOD FOR SHARING CONTENT BETWEEN DEVICES BY USING DOMAIN DRM
    3.
    发明申请
    APPARATUS AND METHOD FOR SHARING CONTENT BETWEEN DEVICES BY USING DOMAIN DRM 审中-公开
    使用域DRM共享设备内容内容的装置和方法

    公开(公告)号：US20100138928A1

    公开(公告)日：2010-06-03

    申请号：US12537550

    申请日：2009-08-07

    申请人： Jung Soo Lee ,  Jung Hyun Kim ,  Jee Hyun Park ,  Kisong Yoon ,  Yeon Jeong Jeong ,  Do-Won Nam

    发明人： Jung Soo Lee ,  Jung Hyun Kim ,  Jee Hyun Park ,  Kisong Yoon ,  Yeon Jeong Jeong ,  Do-Won Nam

    IPC分类号： G06F21/00 ,  G06F15/173

    CPC分类号： G06F21/10

    摘要： An apparatus for sharing content between devices by using a domain digital rights management (DRM) includes: a domain management unit for performing management of a domain within a specific area and registration of users and user devices; a user management unit for managing information about the users of the domain registered by the domain management unit; and a device management unit for managing domain clients of the domain registered by the domain management unit. The apparatus further includes a DRM management unit that has DRM information that supports the domain created through the domain management unit and update information about each DRM, and relays such that DRM content stored in each domain client is converted into domain DRM content and domain DRM license.

    摘要翻译： 一种用于通过使用域数字版权管理（DRM）在设备之间共享内容的装置包括：域管理单元，用于执行特定区域内的域的管理以及用户和用户设备的注册; 用于管理由域管理单元注册的域的用户的信息的用户管理单元; 以及用于管理域管理单元注册的域的域客户端的设备管理单元。 该装置还包括具有DRM信息的DRM管理单元，该DRM信息支持通过域管理单元创建的域并更新关于每个DRM的信息，并且中继，使得存储在每个域客户端中的DRM内容被转换成域DRM内容和域DRM许可 。