COMBINATION-BASED BROADCAST ENCRYPTION METHOD
    1.
    发明申请
    COMBINATION-BASED BROADCAST ENCRYPTION METHOD 有权
    基于组合的广播加密方法

    公开(公告)号:US20120213364A1

    公开(公告)日:2012-08-23

    申请号:US13460098

    申请日:2012-04-30

    IPC分类号: H04K1/00

    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。

    APPARATUS AND METHOD FOR GENERATING A KEY FOR BROADCAST ENCRYPTION
    2.
    发明申请
    APPARATUS AND METHOD FOR GENERATING A KEY FOR BROADCAST ENCRYPTION 有权
    用于生成用于广播加密的密钥的装置和方法

    公开(公告)号:US20120183136A1

    公开(公告)日:2012-07-19

    申请号:US13426830

    申请日:2012-03-22

    IPC分类号: H04L9/00

    摘要: An apparatus and method for generating a key for a broadcast encryption. The apparatus includes a node secret generator for managing a user that receives broadcast data in a tree structure and for generating a unique node secret for each node in the tree structure. The apparatus also includes an instant key generator for temporarily generating an instant key used at all nodes in common in the tree structure, and a node key generator for generating a node key for each node by operating the node secret generated at the node secret generator and the instant key generated at the instant key generator. Thus, key update can be efficiently achieved.

    摘要翻译: 一种用于生成用于广播加密的密钥的装置和方法。 该装置包括节点秘密生成器,用于管理以树结构接收广播数据的用户,并为树结构中的每个节点生成唯一的节点秘密。 该装置还包括一个即时密钥生成器,用于临时生成树结构中所有节点共同使用的即时密钥,以及节点密钥生成器,用于通过操作在节点秘密生成器处生成的节点秘密来生成每个节点的节点密钥, 在即时密钥生成器处生成的即时密钥。 因此,可以有效地实现密钥更新。

    TAG GENERATION METHOD IN BROADCAST ENCRYPTION SYSTEM
    3.
    发明申请
    TAG GENERATION METHOD IN BROADCAST ENCRYPTION SYSTEM 审中-公开
    广播加密系统中的标签生成方法

    公开(公告)号:US20120263300A1

    公开(公告)日:2012-10-18

    申请号:US13538886

    申请日:2012-06-29

    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。

    RADIO FREQUENCY IDENTIFICATION (RFID) TAG ENCRYPTION METHOD AND SYSTEM USING BROADCAST ENCRYPTION (BE) SCHEME
    4.
    发明申请
    RADIO FREQUENCY IDENTIFICATION (RFID) TAG ENCRYPTION METHOD AND SYSTEM USING BROADCAST ENCRYPTION (BE) SCHEME 有权
    无线电频率识别(RFID)TAG加密方法和使用广播加密(BE)方案的系统

    公开(公告)号:US20090278664A1

    公开(公告)日:2009-11-12

    申请号:US12498390

    申请日:2009-07-07

    IPC分类号: H04Q5/22

    摘要: A radio frequency identification (RFID) tag encryption method and system using a broadcast encryption (BE) scheme are provided by encrypting an ID of an RFID tag, storing the encrypted ID in a server and the RFID tag, and storing information relating to a reader authorized to read out the RFID tag in the server so that the reader can read out the RFID tag by decrypting the encrypted ID based on the encrypted ID information read from the RFID tag and the reader information. When readers read out ID data from the RFID tag, a privileged reader can read the data. Thus, it is possible to block unintended information leakage to the readers. In addition, user usability can be enhanced since an attacker cannot perform an access lock on the RFID tag.

    摘要翻译: 使用广播加密(BE)方式的射频识别(RFID)标签加密方法和系统通过加密RFID标签的ID,将加密的ID存储在服务器和RFID标签中,并且存储与读取器有关的信息 被授权在服务器中读出RFID标签,以便读取器可以基于从RFID标签读取的加密的ID信息和读取器信息解密加密的ID来读出RFID标签。 当读者从RFID标签读出ID数据时,特权读取器可以读取数据。 因此,有可能将意外的信息泄露给读者。 此外,由于攻击者无法对RFID标签执行访问锁定,因此可以增强用户可用性。

    USER TERMINAL WITH SECURITY FUNCTION AND SECURITY-CONTROL METHOD
    5.
    发明申请
    USER TERMINAL WITH SECURITY FUNCTION AND SECURITY-CONTROL METHOD 有权
    具有安全功能和安全控制方法的用户终端

    公开(公告)号:US20090183231A1

    公开(公告)日:2009-07-16

    申请号:US12118282

    申请日:2008-05-09

    申请人: Weon-il JIN

    发明人: Weon-il JIN

    IPC分类号: H04L9/32

    CPC分类号: G06F21/32

    摘要: A user terminal apparatus with a security function and a security-control method are provided, which may prevent unauthorized use of the user terminal apparatus without requiring a user to lock up the user terminal apparatus. The user terminal apparatus includes an input sensing unit which senses a user's input to the user terminal apparatus, an information collecting unit which collects information regarding an input state, which is determined based on the user's input, and a transition of the determined state, and a security-control unit which determines whether the user is valid based on the collected information and controls a security function.

    摘要翻译: 提供具有安全功能和安全控制方法的用户终端装置,其可以防止用户终端装置的未经授权的使用而不需要用户锁定用户终端装置。 用户终端装置包括感测用户对用户终端装置的输入的输入感测单元,收集关于基于用户输入确定的输入状态的信息的信息收集单元以及所确定的状态的转换,以及 安全控制单元,其基于所收集的信息来确定用户是否有效,并且控制安全功能。