Encryption key management using distributed storage of encryption-key fragments
    5.
    发明授权
    Encryption key management using distributed storage of encryption-key fragments 有权
    加密密钥管理使用分布式存储的加密密钥片段

    公开(公告)号:US09165158B2

    公开(公告)日:2015-10-20

    申请号:US13817345

    申请日:2010-08-17

    IPC分类号: H04L9/08 G06F21/62

    摘要: An encryption key fragment is divided into a number of encryption key fragments. Requests to store different ones of the encryption key fragments are transmitted to different computer memory storage systems. An individual request to store an encryption key fragment includes one of the encryption key fragments and bears an access control hallmark for regulating access to the encryption key fragment.

    摘要翻译: 加密密钥片段被分成多个加密密钥片段。 存储不同的加密密钥片段的请求被发送到不同的计算机存储器存储系统。 存储加密密钥片段的个人请求包括加密密钥片段中的一个,并且具有用于调节对加密密钥片段的访问的访问控制标志。

    Determining a metric region in a wireless network
    6.
    发明授权
    Determining a metric region in a wireless network 有权
    确定无线网络中的度量标准区域

    公开(公告)号:US08514776B2

    公开(公告)日:2013-08-20

    申请号:US12433717

    申请日:2009-04-30

    IPC分类号: H04W4/00

    摘要: A wireless network metric region in a wireless network is determined using a node metric region and a performance metric. The node metric region, which includes a boundary of the node metric region, for each node is estimated and the performance metric for the node metric region for each node is measured. The boundary of the node metric region for each node is adjusted based on the measured performance metric and then the wireless network metric region for the wireless network is determined based on the adjusted boundaries of the node metric region for each node.

    摘要翻译: 使用节点度量区域和性能度量来确定无线网络中的无线网络度量区域。 估计每个节点包括节点度量区域的边界的节点度量区域,并测量每个节点的节点度量区域的性能度量。 基于测量的性能度量来调整每个节点的节点度量区域的边界,然后基于每个节点的节点度量区域的调整的边界来确定无线网络的无线网络度量区域。

    Selecting erasure codes for a fault tolerant system
    7.
    发明授权
    Selecting erasure codes for a fault tolerant system 有权
    选择容错系统的擦除代码

    公开(公告)号:US08250427B2

    公开(公告)日:2012-08-21

    申请号:US12243471

    申请日:2008-10-01

    IPC分类号: H03M13/00

    摘要: A technique for selecting an erasure code from a plurality of erasure codes for use in a fault tolerant system comprises generating a preferred set of erasure codes based on characteristics of the codes' corresponding Tanner graphs. The fault tolerances of the preferred codes are compared based at least on the Tanner graphs. A more fault tolerant code is selected based on the comparison.

    摘要翻译: 用于从容错系统中使用的多个擦除代码中选择擦除代码的技术包括基于代码对应的Tanner图的特性来产生一组优选的擦除代码。 至少在Tanner图上比较优选代码的容错。 基于比较选择更多的容错代码。

    Windowed backward key rotation
    8.
    发明授权
    Windowed backward key rotation 有权
    向后旋转键

    公开(公告)号:US07697690B2

    公开(公告)日:2010-04-13

    申请号:US10624403

    申请日:2003-07-21

    摘要: Windowed backward key rotation. A user is provided information that allows determining a limited number of previous keys in a series of keys from a later key in the series. A key in the series is generated, based at least in part on the information provided to the user. The key in the series is provided to the user. The user determines at least one key in the limited number of previous keys in the series by applying the information to the key in the series.

    摘要翻译: 向后旋转键。 提供用户被提供的信息,其允许从系列中的稍后的键确定一系列键中的有限数量的先前的键。 至少部分地基于提供给用户的信息来生成系列中的关键。 该系列的关键是提供给用户。 用户通过将该信息应用于该系列中的密钥来确定该系列中有限数量的先前密钥中的至少一个密钥。

    Protocol virtualization for a network file system
    9.
    发明申请
    Protocol virtualization for a network file system 有权
    网络文件系统的协议虚拟化

    公开(公告)号:US20080126434A1

    公开(公告)日:2008-05-29

    申请号:US11498344

    申请日:2006-08-03

    IPC分类号: G06F17/30

    摘要: A method of providing protocol virtualization for a network file system. In particular, at least one virtual file server is established in the data path between the clients and the physical file systems. The virtual file server presents a virtualized name space and a virtualized ID space to the clients, the virtualized name and ID space representing the physical files on the physical file servers. To the clients, the virtual file server appears to be file server. To the physical file servers, the virtual file server appears to be a client. Junction directories permit the virtual file servers to combine physically separate directories to appear as one, and permit migration of objects between the physical file servers without perception by the clients.

    摘要翻译: 为网络文件系统提供协议虚拟化的方法。 特别地,在客户机和物理文件系统之间的数据路径中建立至少一个虚拟文件服务器。 虚拟文件服务器向客户端呈现虚拟化名称空间和虚拟化ID空间,虚拟化名称和ID空间表示物理文件服务器上的物理文件。 对于客户端,虚拟文件​​服务器似乎是文件服务器。 对于物理文件服务器,虚拟文件​​服务器似乎是一个客户端。 连接目录允许虚拟文件服务器将物理上独立的目录组合为一体,并允许在物理文件服务器之间迁移对象,而不会由客户端感知。

    Sharding method and apparatus using directed graphs
    10.
    发明授权
    Sharding method and apparatus using directed graphs 失效
    使用有向图的分片方法和装置

    公开(公告)号:US07043621B2

    公开(公告)日:2006-05-09

    申请号:US10439977

    申请日:2003-05-15

    IPC分类号: G06F12/00

    摘要: A method and apparatus is used to divide a storage volume into shards. The division is made using a directed graph having a vertex for each block in the storage volume and directed-edges between pairs of vertices representing a shard of blocks, associating a weight with each directed edge that represents the dissimilarity for the shard of blocks between the corresponding pair of vertices, selecting a maximum number of shards (K) for dividing the storage volume, identifying a minimum aggregate weight associated with a current vertex for a combination of no more than K shards, performing the identification of the minimum aggregate weight for vertices in the directed graph, and picking the smallest aggregated weight associated with the last vertex to determine a sharding that spans the storage volume and provides a minimal dissimilarity among no more than K shards of blocks.

    摘要翻译: 使用方法和装置将存储卷分成碎片。 使用具有存储卷中的每个块的顶点的有向图以及表示块的块的顶点对之间的有向边,将权重与代表块之间的块的不同性的每个有向边相关联 相应的顶点对,选择用于划分存储卷的最大碎片数(K),识别与不超过K个碎片的组合的当前顶点相关联的最小聚集权重,执行顶点的最小聚集权重的标识 在有向图中,并选择与最后一个顶点相关联的最小聚合权重,以确定跨越存储卷的分片,并在不超过K个块的块中提供最小的不相似性。