Data transfer scheme using caching and differential compression techniques for reducing network load
    24.
    发明授权
    Data transfer scheme using caching and differential compression techniques for reducing network load 失效
    数据传输方案采用缓存和差分压缩技术来减少网络负载

    公开(公告)号:US07359956B2

    公开(公告)日:2008-04-15

    申请号:US10094462

    申请日:2002-03-11

    IPC分类号: G06F15/16 H03M7/34

    摘要: In a data transfer scheme using a caching technique and/or a compression technique which is capable of reducing the network load of a network connecting between data transfer devices, correspondences between data and their names are registered at the data transfer devices and the corresponding names are transferred, instead of transferring the data, for those data for which the correspondences are registered, so that it is possible to reduce the amount of transfer data among the data transfer devices. Even when the name corresponding to the data is not registered so that it is impossible to transfer the corresponding name instead of transferring the data, it is possible to reduce the amount of transfer data among the data transfer devices by transferring the compressed data in which this data is expressed in a compressed form by utilizing the name corresponding to the registered reference data.

    摘要翻译: 在使用缓存技术和/或压缩技术的数据传输方案中,能够减少在数据传输设备之间连接的网络的网络负载,数据和它们的名称之间的对应关系被登记在数据传输设备上,并且相应的名称是 而是传送数据,而不是传送数据,对于其对应被登记的那些数据,使得可以减少数据传送装置之间的传送数据量。 即使当与数据相对应的名称没有被登记使得不可能传送相应的名称而不是传送数据时,也可以通过传送数据传送装置中的这种数据的压缩数据来减少传送数据的数量 通过利用与注册的参考数据对应的名称,以压缩形式表示数据。

    COMMUNICATION APPARATUS, KEY SERVER, AND MANAGEMENT SERVER
    28.
    发明申请
    COMMUNICATION APPARATUS, KEY SERVER, AND MANAGEMENT SERVER 审中-公开
    通信设备,主要服务器和管理服务器

    公开(公告)号:US20100008509A1

    公开(公告)日:2010-01-14

    申请号:US12368674

    申请日:2009-02-10

    IPC分类号: H04L9/14

    摘要: A communication apparatus obtains file information indicating all or a part of first and second encrypted pieces obtained by encrypting a plurality of pieces constituting a part of a content and version management information with which it is possible to judge whether the file information has validity and receives, for each of the pieces, one of the first encrypted piece and the second encrypted piece from another communication apparatus, by using the file information. The communication apparatus transmits, to a key server, a request message for requesting decryption keys each being used for decrypting the one of the first encrypted piece and the second encrypted piece received for a different one of the pieces and the version management information of the file information used to obtain the one of the first encrypted piece and the second encrypted piece in correspondence with each of the pieces and receives the decryption keys.

    摘要翻译: 通信装置获取指示通过加密构成内容的一部分的多个片段获得的第一和第二加密片段的全部或一部分的文件信息,以及可以判断文件信息是否具有有效性并接收的版本管理信息, 对于每个片段,通过使用文件信息,来自另一通信装置的第一加密片和第二加密片之一。 通信装置向密钥服务器发送用于请求解密密钥的请求消息,每个解密密钥用于解密针对不同的片段接收的第一加密片段和第二加密片段中的一个以及文件的版本管理信息 用于获得与每个片段对应的第一加密片和第二加密片中的一个的信息,并接收解密密钥。