Key management method for broadcast encryption in tree topology network
    1.
    发明授权
    Key management method for broadcast encryption in tree topology network 有权
    树型拓扑网络中广播加密的密钥管理方法

    公开(公告)号:US08411865B2

    公开(公告)日:2013-04-02

    申请号:US11448724

    申请日:2006-06-08

    申请人: Hee Jean Kim

    发明人: Hee Jean Kim

    IPC分类号: H04L9/08

    摘要: A key management method for broadcast encryption in a tree topology network which includes a plurality of nodes is provided. The method includes forming a plurality of first node groups each of which includes a node at a second layer and nodes, which belong to the node at the second layer, at a first layer in the tree topology network; forming a plurality of second node groups each of which includes a node at a third layer, at least one node which belongs to the node at the third layer, and at least one node which belongs to the node at the third layer and which forms one of the first node groups, in the tree topology; assigning a plurality of first keys which are shared by subsets of the nodes of the first node groups at the first layer, to each of the first node groups, respectively; assigning a plurality of second keys which are shared by subsets of the nodes of the second node groups at the second layer, to each of the second node groups, respectively; and transmitting an update key which is encrypted using at least one key of either the plurality of first keys or the plurality of second keys.

    摘要翻译: 提供了一种包括多个节点的树形拓扑网络中广播加密的密钥管理方法。 该方法包括:在树形拓扑网络中的第一层处形成多个第一节点组,每个第一节点组包括属于第二层节点的第二层节点和节点; 形成多个第二节点组,每个第二节点组包括第三层的节点,属于第三层节点的至少一个节点,以及属于第三层节点的至少一个节点,并形成一个节点 的第一个节点组,在树形拓扑中; 将由第一层的第一节点组的节点的子集共享的多个第一密钥分别分配给每个第一节点组; 将由第二层的第二节点组的节点的子集共享的多个第二密钥分配给每个第二节点组; 以及发送使用所述多个第一密钥或所述多个第二密钥中的至少一个密钥加密的更新密钥。

    Method and system for updating time information of a DRM device
    2.
    发明申请
    Method and system for updating time information of a DRM device 有权
    用于更新DRM设备的时间信息的方法和系统

    公开(公告)号:US20080195869A1

    公开(公告)日:2008-08-14

    申请号:US11898471

    申请日:2007-09-12

    IPC分类号: H04L9/32 H04L9/30

    摘要: A method and system for updating time information of a digital rights management (DRM) includes a time server transmitting a time information message to a consumer electronics (CE) device, the CE device transmitting the time information message to a digital rights management DRM device when the CE device receives the time information message from the time server, and the DRM device updating a present time of the DRM device based on the time information message when the DRM device successfully performs authentication with respect to the time information message which has been transmitted from the CE device.

    摘要翻译: 一种用于更新数字版权管理(DRM)的时间信息的方法和系统包括时间服务器向消费者电子设备(CE)设备发送时间信息消息,该CE设备将时间信息消息发送到数字版权管理DRM设备,当时 所述CE设备从所述时间服务器接收所述时间信息消息,并且所述DRM设备基于所述时间信息消息来更新所述DRM设备的当前时间,当所述DRM设备成功地对已经从所述时间信息消息发送的时间信息消息进行认证时 CE设备。

    Key establishment method and system between wireless communication devices
    3.
    发明申请
    Key establishment method and system between wireless communication devices 审中-公开
    无线通信设备之间的密钥建立方法和系统

    公开(公告)号:US20060179314A1

    公开(公告)日:2006-08-10

    申请号:US11346195

    申请日:2006-02-03

    申请人: Hee Jean Kim

    发明人: Hee Jean Kim

    IPC分类号: H04L9/00

    CPC分类号: H04L9/0841 H04L2209/80

    摘要: A method for securely establishing a key against aggressive intervention of a third party. A first device generates a function value using a generator, which is selected from elements in a finite field, and an arbitrary number, which is less than a number of the elements of the finite field, hashes the function value, thereby generating a hashed value, and sends the hashed value and the function value to a second device. The second device hashes the received function value, and establishes a key using the received function value and another arbitrary number selected from the elements of the finite field when the hashed function value matches the received hashed value. Accordingly, it is possible to prevent a third device from intervening in their key establishment. Furthermore, a separate channel for the key establishment is not required because the key is established over a data communication channel.

    摘要翻译: 一种用于安全地建立密钥以抵抗第三方侵入干预的方法。 第一设备使用从有限域中的元素中选择的发生器产生函数值,并且小于有限域的元素的数目的任意数量,对功能值进行散列,从而生成散列值 ,并将散列值和功能值发送到第二设备。 第二设备对接收到的功能值进行散列,并且当散列函数值与接收到的散列值匹配时,使用接收到的函数值和从有限域的元素中选择的另一个任意数字建立密钥。 因此,可以防止第三装置在其密钥建立中进行干预。 此外,不需要用于密钥建立的单独信道,因为密钥是通过数据通信信道建立的。

    Method for implementing DRM function and additional function using DRM device and system thereof
    4.
    发明申请
    Method for implementing DRM function and additional function using DRM device and system thereof 审中-公开
    使用DRM设备及其系统实现DRM功能和附加功能的方法

    公开(公告)号:US20080195864A1

    公开(公告)日:2008-08-14

    申请号:US11812876

    申请日:2007-06-22

    IPC分类号: H04L9/32 H04L9/12 H04L9/28

    CPC分类号: G06F21/10

    摘要: A digital rights management (DRM) function performing method and system using a DRM device are provided, in which a DRM device connected to a second communication device decodes encoded contents when a first communication device requests to play the contents, the DRM device re-encodes the contents using a session key, and the DRM device transmits the re-encoded contents to the first communication device via the second communication device.

    摘要翻译: 提供了使用DRM设备的数字版权管理(DRM)功能执行方法和系统,其中连接到第二通信设备的DRM设备在第一通信设备请求播放内容时解码编码的内容,DRM设备重新编码 所述内容使用会话密钥,并且所述DRM设备经由所述第二通信设备向所述第一通信设备发送所述重新编码的内容。

    Method and apparatus for successive data processing by information exchange
    5.
    发明申请
    Method and apparatus for successive data processing by information exchange 审中-公开
    通过信息交换连续进行数据处理的方法和装置

    公开(公告)号:US20080148263A1

    公开(公告)日:2008-06-19

    申请号:US11819229

    申请日:2007-06-26

    IPC分类号: G06F9/46

    CPC分类号: G06F9/54 G06F9/485

    摘要: A successive data processing method and apparatus is provided. A data processing apparatus, when connected to a data management apparatus, transmits apparatus information of the data processing apparatus, selects target process data, transmits target process information of the selected target process data, processes the target process data, and transmits process status information according to a process result of the target process data to the data management apparatus.

    摘要翻译: 提供了连续的数据处理方法和装置。 一种数据处理装置,当与数据管理装置连接时,发送数据处理装置的装置信息,选择目标处理数据,发送所选择的目标处理数据的目标处理信息,处理目标处理数据,并根据 涉及到数据管理装置的目标处理数据的处理结果。

    Method and apparatus of generating encryption key for broadcast encryption
    6.
    发明授权
    Method and apparatus of generating encryption key for broadcast encryption 有权
    生成用于广播加密的加密密钥的方法和装置

    公开(公告)号:US08509433B2

    公开(公告)日:2013-08-13

    申请号:US11727308

    申请日:2007-03-26

    IPC分类号: H04L9/00

    摘要: A method and an apparatus are provided for generating an encryption key for broadcast encryption. The method of generating the encryption key for the broadcast encryption includes generating a first encryption key with respect to all nodes, configured in a plurality of depths, from a root node to a plurality of leaf nodes, and generating a second encryption key with respect to each intermediate node between the root node and the plurality of leaf nodes, wherein the generation of the second encryption key comprises generating any one of first and second keys using the first encryption key depending on whether a first child node, connected to a sibling node of the intermediate node, is on a left path or a right path of the intermediate node.

    摘要翻译: 提供了一种生成用于广播加密的加密密钥的方法和装置。 生成用于广播加密的加密密钥的方法包括:从根节点到多个叶节点,生成关于从多个深度配置的所有节点的第一加密密钥,并且生成关于 所述根节点和所述多个叶节点之间的每个中间节点,其中所述第二加密密钥的生成包括使用所述第一加密密钥生成第一和第二密钥中的任一个,这取决于连接到所述第一加密密钥的第一子节点 中间节点位于中间节点的左侧路径或右侧路径上。

    Method and apparatus of generating encryption key for broadcast encryption
    7.
    发明申请
    Method and apparatus of generating encryption key for broadcast encryption 有权
    生成用于广播加密的加密密钥的方法和装置

    公开(公告)号:US20080086636A1

    公开(公告)日:2008-04-10

    申请号:US11727308

    申请日:2007-03-26

    IPC分类号: H04L9/16

    摘要: A method and an apparatus are provided for generating an encryption key for broadcast encryption. The method of generating the encryption key for the broadcast encryption includes generating a first encryption key with respect to all nodes, configured in a plurality of depths, from a root node to a plurality of leaf nodes, and generating a second encryption key with respect to each intermediate node between the root node and the plurality of leaf nodes, wherein the generation of the second encryption key comprises generating any one of first and second keys using the first encryption key depending on whether a first child node, connected to a sibling node of the intermediate node, is on a left path or a right path of the intermediate node.

    摘要翻译: 提供了一种生成用于广播加密的加密密钥的方法和装置。 生成用于广播加密的加密密钥的方法包括:从根节点到多个叶节点,生成关于从多个深度配置的所有节点的第一加密密钥,并且生成关于 所述根节点和所述多个叶节点之间的每个中间节点,其中所述第二加密密钥的生成包括使用所述第一加密密钥来生成第一和第二密钥中的任一个,这取决于连接到所述第一加密密钥的第一子节点 中间节点位于中间节点的左侧路径或右侧路径上。

    Method and system for updating time information of a DRM device
    8.
    发明授权
    Method and system for updating time information of a DRM device 有权
    用于更新DRM设备的时间信息的方法和系统

    公开(公告)号:US08595496B2

    公开(公告)日:2013-11-26

    申请号:US11898471

    申请日:2007-09-12

    IPC分类号: H04L29/06

    摘要: A method and system for updating time information of a digital rights management (DRM) includes a time server transmitting a time information message to a consumer electronics (CE) device, the CE device transmitting the time information message to a digital rights management DRM device when the CE device receives the time information message from the time server, and the DRM device updating a present time of the DRM device based on the time information message when the DRM device successfully performs authentication with respect to the time information message which has been transmitted from the CE device.

    摘要翻译: 一种用于更新数字版权管理(DRM)的时间信息的方法和系统包括时间服务器向消费者电子设备(CE)设备发送时间信息消息,该CE设备将时间信息消息发送到数字版权管理DRM设备,当时 所述CE设备从所述时间服务器接收所述时间信息消息,并且所述DRM设备基于所述时间信息消息来更新所述DRM设备的当前时间,当所述DRM设备成功地对已经从所述时间信息消息发送的时间信息消息进行认证时 CE设备。