Methods and systems for blackout provisioning in a distribution network
    2.
    发明授权
    Methods and systems for blackout provisioning in a distribution network 有权
    配电网中停电配置的方法和系统

    公开(公告)号:US08233623B2

    公开(公告)日:2012-07-31

    申请号:US11744180

    申请日:2007-05-03

    IPC分类号: H04L29/06

    摘要: Methods and systems for blackout provisioning in a communication network. In an aspect, a method is provided for blackout provisioning in a distribution network. The method includes determining one or more affected regions, and generating a blackout key based an original key and the affected regions. The method also includes encrypting content with the blackout key to produce encrypted content, and transmitting the encrypted content and an encrypted version of the original key over the distribution network. An apparatus is provided for blackout provisioning that includes provisioning logic to determine one or more affected regions, a key generator to generate a blackout key based an original key and the affected regions, encryption logic to encrypt content with the blackout key to produce encrypted content, and a transmitter to transmit the encrypted content and an encrypted version of the original key over the distribution network.

    摘要翻译: 在通信网络中停电配置的方法和系统。 在一方面,提供了一种用于分配网络中的中断供应的方法。 该方法包括确定一个或多个受影响的区域,以及基于原始密钥和受影响区域生成停电密钥。 该方法还包括用停电密钥加密内容以产生加密的内容,以及通过分发网络发送加密的内容和原始密钥的加密版本。 提供一种用于中断供应的装置,其包括用于确定一个或多个受影响区域的供应逻辑,基于原始密钥和受影响区域生成中断密钥的密钥发生器,用于断开密钥加密内容以产生加密内容的加密逻辑, 以及发送器,用于在分发网络上传送加密的内容和原始密钥的加密版本。

    File decryption interface
    4.
    发明授权
    File decryption interface 有权
    文件解密界面

    公开(公告)号:US08819421B2

    公开(公告)日:2014-08-26

    申请号:US11692099

    申请日:2007-03-27

    IPC分类号: G06F21/00 G06F21/60 G06F21/62

    CPC分类号: G06F21/602 G06F21/6218

    摘要: Systems and methodologies are described that facilitate digital rights management in a wireless communication environment. Generally, content (e.g., data files, video images, etc.) can be downloaded and maintained in its encrypted state to ensure protection of digital rights. Consequently, programming applications that utilize such content decrypt the content at the time of use (e.g., playback or access). A file interface can be provided that allows applications to access encrypted content utilizing a standardized file I/O interface. Decryption of content can be transparent to individual applications utilizing encrypted content. Therefore, modifications cryptographic algorithms or procedures and changes in key sizes need not affect the programming applications.

    摘要翻译: 描述了在无线通信环境中促进数字权限管理的系统和方法。 通常,可以将内容(例如,数据文件,视频图像等)下载并保持在其加密状态,以确保数字权利的保护。 因此,利用这样的内容的编程应用程序在使用时对内容进行解密(例如,回放或访问)。 可以提供允许应用程序使用标准化文件I / O接口访问加密内容的文件接口。 内容的解密对于使用加密内容的各个应用来说可以是透明的。 因此,修改密码算法或程序以及密钥大小的变化不必影响编程应用。

    Method and apparatus for encrypting/decrypting multimedia content to allow random access
    7.
    发明授权
    Method and apparatus for encrypting/decrypting multimedia content to allow random access 有权
    用于加密/解密多媒体内容以允许随机访问的方法和装置

    公开(公告)号:US08677504B2

    公开(公告)日:2014-03-18

    申请号:US11182088

    申请日:2005-07-14

    IPC分类号: G06F21/00

    摘要: A method is disclosed for encrypting a multimedia file including parsing the multimedia file to identify a media data portion; encrypting the media data portion; and, combining the encrypted media data portion with a non-encrypted non-media data portion. A method is also disclosed for playing a multimedia file including parsing the multimedia file to identify an unencrypted metadata portion; using the unencrypted metadata portion to locate a position of interest in the media file, the position of interest having an associated encrypted media data portion; and, decrypting the associated encrypted media data portion. An apparatus for performing the methods is also disclosed herein.

    摘要翻译: 公开了一种加密多媒体文件的方法,包括解析多媒体文件以识别媒体数据部分; 加密媒体数据部分; 以及将加密的媒体数据部分与未加密的非媒体数据部分组合。 还公开了播放多媒体文件的方法,包括解析多媒体文件以识别未加密的元数据部分; 使用未加密的元数据部分来定位媒体文件中感兴趣的位置,感兴趣的位置具有相关联的加密媒体数据部分; 以及解密相关联的加密媒体数据部分。 本文还公开了一种用于执行该方法的装置。