Radio frequency system and password management method in radio frequency system
    21.
    发明申请
    Radio frequency system and password management method in radio frequency system 有权
    射频系统中的射频系统和密码管理方法

    公开(公告)号:US20070051799A1

    公开(公告)日:2007-03-08

    申请号:US11474305

    申请日:2006-06-26

    IPC分类号: G06K5/00 G06K7/01

    摘要: A radio frequency system and a password management method applied to a storage device of the radio frequency system are provided, in which a first access password is stored for deciding whether to permit access to information and a first changed password. The first changed password, a second access password, and a second changed password are received, and the first access password is changed to the second access password, and the first changed password is changed to the second changed password. Accordingly, information access authority in the storage device and a password change authority can be exclusively transferred according to the transfer of management of the storage device, and information leakage caused by a previous manager's password leakage or a third person's password leakage can be prevented.

    摘要翻译: 提供了应用于射频系统的存储装置的射频系统和密码管理方法,其中存储有用于决定是否允许访问信息和第一改变密码的第一访问密码。 接收到第一更改的密码,第二访问密码和第二更改的密码,并且将第一访问密码改变为第二访问密码,并且将第一更改密码更改为第二更改的密码。 因此,可以根据存储装置的管理的转移专门转移存储装置中的信息访问权限和密码变更机构,并且可以防止由先前管理者的密码泄漏或第三人的密码泄漏引起的信息泄漏。

    Method of managing data in network system and a network system using the same
    22.
    发明申请
    Method of managing data in network system and a network system using the same 审中-公开
    在网络系统中管理数据的方法和使用该方法的网络系统

    公开(公告)号:US20060288231A1

    公开(公告)日:2006-12-21

    申请号:US11407075

    申请日:2006-04-20

    IPC分类号: H04K1/00

    CPC分类号: H04L63/083

    摘要: Provided are a method of managing data in a network system and a network system using the method. The method includes substituting a master password for a predetermined function to generate a password; if a password for requesting an access to specific data is input, checking whether the input password matches with the generated password; and if the input password matches with the generated password, allowing the access to the specific data. Thus, in a case where a storage unit makes access levels of data into multilayered access levels to authenticate a password, the storage unit can store only a password to efficiently authenticate and manage an access to data.

    摘要翻译: 提供了一种使用该方法在网络系统和网络系统中管理数据的方法。 该方法包括将主密码替换为预定功能以产生密码; 如果输入用于请求访问特定数据的密码,则检查输入的密码是否与生成的密码匹配; 如果输入的密码与生成的密码匹配,则允许访问特定的数据。 因此,在存储单元使数据访问级别进入多层访问级别以验证密码的情况下,存储单元可以仅存储密码以有效地认证和管理对数据的访问。

    Combination-based broadcast encryption method
    23.
    发明授权
    Combination-based broadcast encryption method 有权
    基于组合的广播加密方式

    公开(公告)号:US08200963B2

    公开(公告)日:2012-06-12

    申请号:US11311256

    申请日:2005-12-20

    IPC分类号: H04L29/06

    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。

    Hierarchical threshold tree-based broadcast encryption method
    25.
    发明申请
    Hierarchical threshold tree-based broadcast encryption method 有权
    基于层次阈值树的广播加密方法

    公开(公告)号:US20070189539A1

    公开(公告)日:2007-08-16

    申请号:US11340614

    申请日:2006-01-27

    IPC分类号: H04L9/00

    摘要: A hierarchical threshold tree-based broadcast encryption method includes a first step for a server initialization and a user subscription, a second step of distributing a message to enable a privileged user (authorized user) to decrypt a group key, and a third step of the privileged user (authorized user) decrypting the message using the group key. According to the method, it is possible to prevent any group of revocators from obtaining the group key using their secret information and information being broadcast by the server.

    摘要翻译: 基于分层阈值树的广播加密方法包括用于服务器初始化和用户订阅的第一步骤,分发消息以使得特权用户(授权用户)能够解密组密钥的第二步骤,以及第三步骤 特权用户(授权用户)使用组密钥解密消息。 根据该方法,可以防止任何一组撤销者使用其秘密信息和由服务器广播的信息来获得组密钥。

    Apparatus and method for generating a key for broadcast encryption
    26.
    发明授权
    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:US08160246B2

    公开(公告)日:2012-04-17

    申请号:US11245054

    申请日:2005-10-07

    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。

    Hierarchical threshold tree-based broadcast encryption method
    27.
    发明授权
    Hierarchical threshold tree-based broadcast encryption method 有权
    基于层次阈值树的广播加密方法

    公开(公告)号:US08005225B2

    公开(公告)日:2011-08-23

    申请号:US11340614

    申请日:2006-01-27

    IPC分类号: H04L29/00

    摘要: A hierarchical threshold tree-based broadcast encryption method includes a first step for a server initialization and a user subscription, a second step of distributing a message to enable a privileged user (authorized user) to decrypt a group key, and a third step of the privileged user (authorized user) decrypting the message using the group key. According to the method, it is possible to prevent any group of revocators from obtaining the group key using their secret information and information being broadcast by the server.

    摘要翻译: 基于分层阈值树的广播加密方法包括用于服务器初始化和用户订阅的第一步骤,分发消息以使得特权用户(授权用户)能够解密组密钥的第二步骤,以及第三步骤 特权用户(授权用户)使用组密钥解密消息。 根据该方法,可以防止任何一组撤销者使用其秘密信息和由服务器广播的信息来获得组密钥。

    Combination-based broadcast encryption method
    28.
    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。

    Apparatus and method for generating a key for broadcast encryption
    29.
    发明授权
    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:US08755520B2

    公开(公告)日:2014-06-17

    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。

    Hybrid broadcast encryption method
    30.
    发明授权
    Hybrid broadcast encryption method 失效
    混合广播加密方式

    公开(公告)号:US07848525B2

    公开(公告)日:2010-12-07

    申请号:US11346194

    申请日:2006-02-03

    IPC分类号: H04L9/00

    摘要: A hybrid broadcast encryption method is provided. The hybrid broadcast encryption method includes setting initialization values, generating a node secret using the initialization values; generating a private secret using the node secret; sending the node secret and the private secret; generating a broadcast message based on a revoked group; encrypting a session key using a key encryption key (KEK) which is allocated to every user group and the broadcast message; and broadcasting to every user the encrypted session key and the broadcast message.

    摘要翻译: 提供了一种混合广播加密方法。 混合广播加密方法包括设置初始化值,使用初始化值生成节点秘密; 使用节点秘密生成私人秘密; 发送节点秘密和私人秘密; 基于撤销的组生成广播消息; 使用分配给每个用户组的密钥加密密钥(KEK)和广播消息来加密会话密钥; 并向每个用户广播加密的会话密钥和广播消息。