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    • 2. 发明授权
    • Error detection protocol
    • 错误检测协议
    • US07756830B1
    • 2010-07-13
    • US09282907
    • 1999-03-31
    • Ching-Yun ChaoRoger Eldred HoughRodolfo Augusto Mancisidor-LandaJavashree RamanathanAmal Ahmed Shaheen
    • Ching-Yun ChaoRoger Eldred HoughRodolfo Augusto Mancisidor-LandaJavashree RamanathanAmal Ahmed Shaheen
    • G06F17/30
    • G06F11/187G06F11/1425G06F11/182G06F17/30575
    • A method and apparatus for providing a recent set of replicas for a cluster data resource within a cluster having a plurality of nodes. Each of the nodes having a group services client with membership and voting services. The method of the present invention concerns broadcasting a data resource open request to the nodes of the cluster, determining a recent replica of the cluster data resource among the nodes, and distributing the recent replica to the nodes of the cluster. The apparatus of the present invention is for providing a recent set of replicas for a cluster data resource. The apparatus has a cluster having a plurality of nodes in a peer relationship, each node has an electronic memory for storing a local replica of the cluster data resource. A group services client, which is executable by each node of the cluster, has cluster broadcasting and cluster voting capability. A database conflict resolution protocol (“DCRP”), which is executable by each node of the cluster, interacts with the group services clients such that the DCRP broadcasts to the nodes a data resource modification request having a data resource identifier and a timestamp. The DCRP determines a recent replica of the cluster data resource among the nodes with respect to the timestamp of the broadcast data resource modification request relative to a local timestamp associated with the data resource identifier, and distributes the recent replica of the cluster data resource to each node of the plurality of nodes.
    • 一种用于在具有多个节点的集群内为集群数据资源提供最近的一组副本的方法和装置。 每个节点具有具有成员资格和投票服务的组服务客户端。 本发明的方法涉及向簇的节点广播数据资源打开请求,确定节点之间的集群数据资源的最近副本,并将最近的副本分发到集群的节点。 本发明的装置用于提供用于集群数据资源的一组最新的副本。 该设备具有具有对等关系的多个节点的集群,每个节点具有用于存储集群数据资源的本地副本的电子存储器。 由群集的每个节点执行的组服务客户端具有集群广播和集群投票功能。 由集群的每个节点执行的数据库冲突解决协议(“DCRP”)与组服务客户端交互,使得DCRP向节点广播具有数据资源标识符和时间戳的数据资源修改请求。 相对于与数据资源标识符相关联的本地时间戳相对于广播数据资源修改请求的时间戳,DCRP确定节点之间的集群数据资源的最近副本,并且将最近的集群数据资源副本分发给每个 节点。
    • 4. 发明授权
    • Node failure recovery in a hub and spoke data replication mechanism
    • 节点故障恢复中心和辐射数据复制机制
    • US06335937B1
    • 2002-01-01
    • US09160021
    • 1998-09-24
    • Ching-Yun ChaoRoger Eldred HoughAmal Ahmed Shaheen
    • Ching-Yun ChaoRoger Eldred HoughAmal Ahmed Shaheen
    • H04L1228
    • H04L69/40
    • A node failure recovery mechanism for use in a data replicating system in a distributed computer environment wherein a plurality of servers are configured about one or more central hubs in a hub and spoke arrangement. In each of a plurality of originating nodes, updates and associated origination sequence numbers are sent to the central hub. The hub sends updates and associated distribution sequence numbers to the plurality of originating nodes. The hub tracks acknowledgments sent by nodes for a destination sequence number acknowledged by all nodes. Upon failure of a node, a node failure recovery method may be used to enable a “buddy” node to help the failed node gain readmission to a distribution group.
    • 一种用于在分布式计算机环境中的数据复制系统中的节点故障恢复机制,其中多个服务器被配置为关于轮毂和轮辐布置中的一个或多个中心集线器。 在多个起始节点的每一个中,将更新和相关联的发起序列号发送到中央集线器。 集线器向多个发起节点发送更新和相关分配序列号。 集线器跟踪由节点发送的用于所有节点确认的目的地序列号的确认。 当节点故障时,可以使用节点故障恢复方法来使“好友”节点能够帮助故障节点增加到分配组的重新接入。
    • 5. 发明授权
    • Apparatus and method for maintaining consistency of shared data resources in a cluster environment
    • 在集群环境中保持共享数据资源的一致性的装置和方法
    • US06748381B1
    • 2004-06-08
    • US09282908
    • 1999-03-31
    • Ching-Yun ChaoRoger Eldred HoughAmal Ahmed Shaheen
    • Ching-Yun ChaoRoger Eldred HoughAmal Ahmed Shaheen
    • G06F1730
    • G06F11/182G06F17/30371H04L67/104H04L67/1046H04L67/1095Y10S707/99952
    • A method and apparatus for providing a recent set of replicas for a cluster data resource within a cluster having a plurality of nodes; each of the nodes having a group services client with membership and voting services. The method broadcasts a data resource open request to the nodes of the cluster, determines a recent replica of the cluster data resource among the nodes, and distributes the recent replica to the nodes of the cluster. The apparatus is for providing a recent set of replicas for a cluster data resource. The apparatus has a cluster having a plurality of nodes in a peer relationship; each node has an electronic memory for storing a local replica of the cluster data resource. A group services client, which is executable by each node of the cluster, has cluster broadcasting and cluster voting capability. A database conflict resolution protocol (“DCRP”), which is executable by each node of the cluster, interacts with the group services clients such that the DCRP broadcasts to the nodes a data resource modification request having a data resource identifier and a timestamp. The DCRP determines a recent replica of the cluster data resource among the nodes with respect to the timestamp of the broadcast data resource modification request relative to a local timestamp associated with the data resource identifier, and distributes the recent replica of the cluster data resource to each node of the plurality of nodes.
    • 一种在具有多个节点的集群内提供用于集群数据资源的最近集合的副本的方法和装置; 每个节点具有具有成员资格和投票服务的组服务客户端。 该方法向簇的节点广播数据资源打开请求,确定节点之间的集群数据资源的最近副本,并将最近的副本分发到集群的节点。 该装置用于为集群数据资源提供最新的一组副本。 所述设备具有具有对等关系的多个节点的集群; 每个节点具有用于存储集群数据资源的本地副本的电子存储器。 由群集的每个节点执行的组服务客户端具有集群广播和集群投票功能。 由集群的每个节点执行的数据库冲突解决协议(“DCRP”)与组服务客户端交互,使得DCRP向节点广播具有数据资源标识符和时间戳的数据资源修改请求。 相对于与数据资源标识符相关联的本地时间戳相对于广播数据资源修改请求的时间戳,DCRP确定节点之间的集群数据资源的最近副本,并且将最近的集群数据资源副本分发给每个 节点。
    • 9. 发明授权
    • System and method for enforcing network cluster proximity requirements using a proxy
    • 使用代理实现网络群集邻近要求的系统和方法
    • US07519181B2
    • 2009-04-14
    • US11014560
    • 2004-12-16
    • Amal Ahmed ShaheenTommy McGuire
    • Amal Ahmed ShaheenTommy McGuire
    • G06F21/00
    • H04L63/08H04L63/0492H04L63/10H04L2463/101
    • A system, method and computer program for enforcing network cluster proximity requirements using a proxy is useful in preventing unauthorized devices from receiving encrypted broadcast content intended for only authorized users within a network cluster. The current art allows users to remotely establish trust via a cryptographic handshake. This results in encrypted broadcast content being delivered to unauthorized devices. The present invention assures that encrypted broadcast content is delivered to only authorized devices, allowing authorized remote devices to receive encrypted broadcast content while preventing unauthorized remote devices from doing so. The present invention enforces network proximity requirements to authorized devices within a defined area by timing the cryptographic handshaking, and by authorizing device proxies within a geographic area for retransmitting to authorized remote devices outside said geographic area.
    • 用于使用代理来实施网络集群接近度要求的系统,方法和计算机程序对于防止未经授权的设备接收仅针对网络集群内的授权用户的加密广播内容是有用的。 当前的艺术允许用户通过密码握手远程建立信任。 这导致加密的广播内容被传送到未授权的设备。 本发明确保加密的广播内容被传送到仅授权的设备,允许授权的远程设备接收加密的广播内容,同时防止未授权的远程设备这样做。 本发明通过对加密握手进行定时,并且通过授权在地理区域内的设备代理来重新发送到所述地理区域之外的授权的远程设备来对所定义区域内的授权设备实施网络接近要求。
    • 10. 发明授权
    • Controlling delivery of broadcast encryption content for a network cluster from a content server outside the cluster
    • 控制从集群外的内容服务器为网络集群传送广播加密内容
    • US07412063B2
    • 2008-08-12
    • US10815207
    • 2004-03-31
    • Eunjin JungAmal Ahmed Shaheen
    • Eunjin JungAmal Ahmed Shaheen
    • H04L9/14
    • H04L12/18H04L9/0833H04L63/0428H04L63/065H04L2209/601
    • Controlling delivery of broadcast encryption content for a network cluster from a content server outside the cluster that include receiving in the content server from the network device a key management block for the cluster, a unique data token for the cluster, and an encrypted cluster id and calculating a binding key for the cluster in dependence upon the key management block for the cluster, the unique data token for the cluster, and the encrypted cluster id. In typical embodiments, calculating a binding key includes calculating a management key from the key management block for the cluster; calculating a content server device key from the management key and the content server device id; decrypting the encrypted cluster id with the content server device key; and calculating the binding key with the management key, the unique data token for the cluster, and the cluster id.
    • 控制从集群外部的内容服务器向网络集群传送广播加密内容,包括从内容服务器从网络设备接收集群的密钥管理块,集群的唯一数据令牌和加密的集群ID,以及 根据集群的密钥管理块,集群的唯一数据令牌和加密的集群ID,计算集群的绑定密钥。 在典型实施例中,计算绑定密钥包括从集群的密钥管理块计算管理密钥; 从管理密钥和内容服务器设备ID计算内容服务器设备密钥; 用内容服务器设备密钥解密加密的集群ID; 并使用管理密钥,集群的唯一数据令牌和集群ID计算绑定密钥。