Method and system for updating time information of a DRM device
    11.
    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。

    Device authentication method using broadcast encryption (BE)
    12.
    发明申请
    Device authentication method using broadcast encryption (BE) 审中-公开
    使用广播加密(BE)的设备认证方法

    公开(公告)号:US20080010242A1

    公开(公告)日:2008-01-10

    申请号:US11651596

    申请日:2007-01-10

    IPC分类号: G06F17/30

    摘要: A device authentication method using broadcast encryption is provided, in which, a hash value corresponding to a group key version is generated, the generated hash value is encrypted with a group key, group key information comprising the encrypted hash value is generated, and the generated group key information including a signature of an authentication server for the group key information is transmitted. Accordingly, mutual authentication is accomplished by using the group key version including in the group key information.

    摘要翻译: 提供一种使用广播加密的设备认证方法,其中生成与组密钥版本对应的散列值,生成的散列值用组密钥加密,生成包括加密散列值的组密钥信息,生成 发送包括组密钥信息的认证服务器的签名的组密钥信息。 因此,通过使用包括组密钥信息中的组密钥版本来实现相互认证。

    Combination-based broadcast encryption method
    13.
    发明申请
    Combination-based broadcast encryption method 有权
    基于组合的广播加密方式

    公开(公告)号:US20070140483A1

    公开(公告)日:2007-06-21

    申请号:US11311256

    申请日:2005-12-20

    摘要: A combination-based broadcast encryption method includes: assigning by a server a base group of different combinations to each user; producing and sending secret information for each user by using as a base the base group allocated to each user; producing and sending an inverse-base parameter value through calculations with integers used to produce the base group and key value information of one or more privileged users; and deriving a group key by using the key value information of the privileged users, encrypting a session key by using the derived group key, and sending the encrypted session key to each user. Accordingly, each user is assigned a different base through a combination, thereby having security against collusion attacks.

    摘要翻译: 基于组合的广播加密方法包括:由服务器分配不同组合的基组给每个用户; 通过使用分配给每个用户的基本组作为基础来生成和发送每个用户的秘密信息; 通过用于产生基本组的整数和一个或多个特权用户的键值信息的计算产生和发送反基本参数值; 以及通过使用所述特权用户的密钥值信息来导出组密钥,通过使用导出的组密钥加密会话密钥,以及将加密的会话密钥发送给每个用户。 因此,通过组合为每个用户分配不同的基站,从而具有防止串通攻击的安全性。

    Method for authorizing contents play rights in use of a recording medium
    14.
    发明申请
    Method for authorizing contents play rights in use of a recording medium 失效
    使用记录介质授权内容播放权利的方法

    公开(公告)号:US20070006251A1

    公开(公告)日:2007-01-04

    申请号:US11407147

    申请日:2006-04-20

    IPC分类号: H04N7/16

    摘要: A method for authorizing an off-line image device to play contents in use of a recording medium, including recording an encrypted key on a recording medium; recording contents on the recording medium using the encrypted key; and recording information as to a play right to play the contents recorded on the recording medium. Thus, the off-line image device can be authorized to play contents in use of the recording medium. As a result, the off-line image device can play contents that are recorded on the recording medium and must be authorized to play the contents.

    摘要翻译: 一种用于授权离线图像设备在使用记录介质中播放内容的方法,包括将记录加密的密钥存储在记录介质上; 使用加密密钥在记录介质上记录内容; 以及记录关于播放权的信息,以播放记录在记录介质上的内容。 因此,离线图像设备可以被授权播放使用记录介质的内容。 结果,离线图像设备可以播放记录在记录介质上并且必须被授权播放内容的内容。

    Tag generation method in broadcast encryption system
    16.
    发明申请
    Tag generation method in broadcast encryption system 有权
    广播加密系统中的标签生成方法

    公开(公告)号:US20060236099A1

    公开(公告)日:2006-10-19

    申请号:US11406254

    申请日:2006-04-19

    IPC分类号: H04L9/00

    摘要: A tag generation method for generating tags used in data packets in a broadcast encryption system is provided. The method includes detecting at least one revoked leaf node; setting a node identification (node ID) assigned to at least one node among nodes assigned node IDs at a layer 0 and to which the at least one revoked leaf node is subordinate, to a node path identification (NPID) of the at least one revoked leaf node at the layer 0; generating a tag list in the layer 0 by combining the NPID of each of the at least one revoked leaf nodes at the layer 0 in order of increment of node IDs of the corresponding at least one revoked leaf nodes; and generating a tag list in a lowest layer by repeatedly performing the setting and generation operation down to the lowest layer.

    摘要翻译: 提供一种用于在广播加密系统中生成用于数据分组的标签的标签生成方法。 该方法包括检测至少一个撤销的叶节点; 将分配给层0的所有节点ID的节点和所述至少一个被撤销的叶节点从属的节点标识(节点ID)分配给所述至少一个已被吊销的节点路径标识(NPID) 第0层的叶节点; 通过将对应的至少一个被撤销的叶节点的节点ID的增量的顺序组合在层0上的至少一个撤销的叶节点中的每个的NPID,生成层0中的标签列表; 以及通过重复执行到最下层的设置和生成操作来在最下层中生成标签列表。

    Context aware apparatus and method
    17.
    发明授权
    Context aware apparatus and method 有权
    上下文感知设备和方法

    公开(公告)号:US09064214B2

    公开(公告)日:2015-06-23

    申请号:US13350048

    申请日:2012-01-13

    IPC分类号: G06N5/02 G06N5/04

    CPC分类号: G06N5/04

    摘要: A context aware apparatus is provided. The context aware apparatus includes an extracting unit configured to extract a terminological-box (T-box) from a semantic model, a first generating unit configured to generate a reasoning rule based on the extracted T-box, a second generating unit configured to generate a first assertion-box (A-box) based on sensing information, and a reasoning unit configured to infer a user context based on the reasoning rule and the first A-box.

    摘要翻译: 提供了一种情境感知装置。 上下文感知装置包括提取单元,被配置为从语义模型提取术语框(T-box);第一生成单元,被配置为基于所提取的T盒生成推理规则;第二生成单元,被配置为生成 基于感测信息的第一断言盒(A-Box)和被配置为基于推理规则和第一A盒来推断用户上下文的推理单元。

    Method and system for updating time information of a DRM device
    18.
    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。

    User key allocation method for broadcast encryption
    19.
    发明授权
    User key allocation method for broadcast encryption 失效
    广播加密的用户密钥分配方法

    公开(公告)号:US08515074B2

    公开(公告)日:2013-08-20

    申请号:US11648608

    申请日:2007-01-03

    IPC分类号: H04L9/00

    摘要: A user key allocation method for broadcast encryption is provided. The user key allocation method includes generating a plurality of subsets by dividing one group including a plurality of nodes to sub-groups and allocating key sets with respect to the subsets, respectively. The nodes included in the subset may be odd nodes and even nodes of the nodes of the group. The nodes are arranged so that privileged nodes are consecutive or there is only one privileged node. Accordingly, it is possible to reduce the data size transmitted from the server to the nodes by constituting one or more subsets from the nodes consecutively arranged and providing key sets with respect to the subsets.

    摘要翻译: 提供用于广播加密的用户密钥分配方法。 用户密钥分配方法包括通过将包括多个节点的一个组划分成子组并且分别相对于子集分配密钥集来生成多个子集。 包括在子集中的节点可以是组的节点的奇数节点和偶数节点。 这些节点被布置成使得特权节点是连续的,或者只有一个特权节点。 因此,通过从连续排列的节点构成一个或多个子集,并且相对于子集提供密钥集,可以减少从服务器发送到节点的数据大小。

    ASSERTION MANAGEMENT METHOD AND APPARATUS, AND REASONING APPARATUS INCLUDING THE ASSERTION MANAGEMENT APPARATUS
    20.
    发明申请
    ASSERTION MANAGEMENT METHOD AND APPARATUS, AND REASONING APPARATUS INCLUDING THE ASSERTION MANAGEMENT APPARATUS 有权
    评估管理方法和装置,以及包括管理装置在内的理由

    公开(公告)号:US20130138701A1

    公开(公告)日:2013-05-30

    申请号:US13484393

    申请日:2012-05-31

    申请人: Weon-Il Jin

    发明人: Weon-Il Jin

    IPC分类号: G06F17/30

    CPC分类号: G06F17/30286 G06F17/30734

    摘要: An assertion management method includes collecting a SameAs assertion from a plurality of assertions; searching the plurality of assertions for any assertion having a first individual of the SameAs assertion as an instance; and creating a new assertion having a second individual of the SameAs assertion as an instance from each found assertion.

    摘要翻译: 断言管理方法包括从多个断言中收集SameAs断言; 搜索多个断言以作为具有作为实例的SameAs断言的第一个体的任何断言; 并创建一个新的断言,其中有来自每个发现的断言的SameAs断言的第二个人作为一个实例。