公开(公告)号：US09167207B1

公开(公告)日：2015-10-20

申请号：US14145409

申请日：2013-12-31

Applicant: Google Inc.

Inventor： William Alexander Drewry ,  David Kimbal Dorwin

IPC: G06F21/00 ,  H04N7/167

CPC classification number: H04N21/2347 ,  H04L9/08 ,  H04N7/1675 ,  H04N21/235 ,  H04N21/26613 ,  H04N21/435 ,  H04N21/4405 ,  H04N21/44055 ,  H04N21/4627 ,  H04N21/8456

Abstract: A system to facilitate media content protection is provided. The system includes a partitioning component, a key derivation component and an output component. The partitioning component partitions encrypted media content associated with a master key into a plurality of media content segments. The key derivation component generates respective subkeys for the plurality of media content segments based at least in part on the master key and one or more parameters associated with one or more memory operations. The output component generates decrypted media content based at least in part on the respective subkeys.

Abstract translation: 提供了一种便于媒体内容保护的系统。 该系统包括分区组件，密钥导出组件和输出组件。 分区组件将与主密钥相关联的加密媒体内容分成多个媒体内容片段。 密钥导出组件至少部分地基于主密钥和与一个或多个存储器操作相关联的一个或多个参数来生成多个媒体内容片段的相应子密钥。 输出组件至少部分地基于相应的子密钥来产生解密的媒体内容。

公开(公告)号：US20150199497A1

公开(公告)日：2015-07-16

申请号：US13723063

申请日：2012-12-20

Applicant: Google Inc.

Inventor： David Kimbal Dorwin

IPC: G06F21/10

CPC classification number: G06F21/105

Abstract: This disclosure relates to enhanced user control for content protection solutions. An options component determines or infers a set of digital rights management solutions supported by a content source, and a data component determines or infers information associated with respective digital rights management solutions supported by the content source. The set of digital rights management solutions can further be supported by a client device. A prompt component provides a user a set of digital rights management options based at least in part on the set of digital rights management solutions supported by the content source and the information, and enables the user to select zero or more of the digital rights management options. The content source can enable access for a subset of associated content based at least in part on the selections of the user.

Abstract translation: 本公开涉及用于内容保护解决方案的增强的用户控制。 选项组件确定或推断内容源支持的一组数字版权管理解决方案，并且数据组件确定或推断与内容源支持的相应数字版权管理解决方案相关联的信息。 数字版权管理解决方案可以进一步得到客户端设备的支持。 提示组件至少部分地基于由内容源和信息支持的数字版权管理解决方案提供用户一组数字版权管理选项，并且使得用户能够选择零个或多个数字版权管理选项 。 内容源可以至少部分地基于用户的选择来启用对相关内容的子集的访问。

公开(公告)号：US20170270306A1

公开(公告)日：2017-09-21

申请号：US15616417

申请日：2017-06-07

Applicant: Google Inc.

Inventor： David Kimbal Dorwin

IPC: G06F21/60

CPC classification number: H04N21/2347 ,  G06F11/3003 ,  G06F17/2247 ,  G06F21/10 ,  G06F21/105 ,  G06F21/50 ,  G06F21/60 ,  G06F21/602 ,  G06F21/62 ,  G06F21/6209 ,  G06F2221/0724 ,  G06F2221/0759 ,  G06T11/00 ,  G11B20/00086 ,  H04L9/0631 ,  H04L9/32 ,  H04L29/06027 ,  H04L47/801 ,  H04L47/805 ,  H04L63/00 ,  H04L63/0428 ,  H04L63/06 ,  H04L63/0876 ,  H04L63/102 ,  H04L65/4092 ,  H04L65/602 ,  H04L65/80 ,  H04L2209/603 ,  H04L2463/101 ,  H04L2463/103 ,  H04N21/24 ,  H04N21/25825 ,  H04N21/25833 ,  H04N21/41407 ,  H04N21/4405 ,  H04N21/4516

Abstract: Techniques are described for reducing time to decrypt a next encrypted frame in a content stream by optimizing a license/key acquisition process. When requesting content, a key identifier and/or license identifier may be included within a webpage using a link, script, or similar access point. When a client device sends a request for content, the loading of the webpage within the client device includes the embedded key identifier. Access to the key/license identifier at the client device then may initiate a key/license acquisition process by the client device. The key/license may be obtained from a key management device in parallel with, or prior to, downloading of at least a portion of the content stream.

公开(公告)号：US09311459B2

公开(公告)日：2016-04-12

申请号：US14800680

申请日：2015-07-15

Applicant: Google Inc.

Inventor： David Kimbal Dorwin

IPC: G06F12/14 ,  G06F21/10 ,  G06F21/62 ,  H04L29/06 ,  G06F21/60 ,  H04L9/06 ,  G06F11/30 ,  H04N21/258 ,  H04N21/45

CPC classification number: G06F21/602 ,  G06F11/3003 ,  G06F17/2247 ,  G06F21/10 ,  G06F21/105 ,  G06F21/60 ,  G06F21/62 ,  G06F21/6209 ,  G06F2221/0724 ,  G06F2221/0759 ,  G11B20/00086 ,  H04L9/0631 ,  H04L9/32 ,  H04L29/06027 ,  H04L63/00 ,  H04L63/0428 ,  H04L63/06 ,  H04L63/0876 ,  H04L63/102 ,  H04L65/80 ,  H04L2209/603 ,  H04L2463/101 ,  H04L2463/103 ,  H04N21/24 ,  H04N21/25825 ,  H04N21/25833 ,  H04N21/41407 ,  H04N21/4516

Abstract: Application-driven interceptor module enables offline playback of Digital Rights Management (DRM) protected content to work in a same way as online playback. Communications with the DRM module are intercepted by the application-driven interceptor that is aware of the client device's network connection status. When the interceptor application determines that the client device is offline, requests for the protected content, and license/key to the protected content may then be managed by the interceptor application. In one embodiment, the interceptor application may retrieve requests for the key/license from a locally protected data store, and provide the key/license to the DRM module. In this manner, the DRM module may be unaware that its messages are being intercepted, and may then operate the same, unaware of whether or not the client device is online or offline.

公开(公告)号：US09223988B1

公开(公告)日：2015-12-29

申请号：US13691144

申请日：2012-11-30

Applicant: Google Inc.

Inventor： David Kimbal Dorwin

IPC: G06F21/00 ,  G06F21/60 ,  G06F21/10 ,  G11B20/00

CPC classification number: G06F21/602 ,  G06F11/3003 ,  G06F17/2247 ,  G06F21/10 ,  G06F21/105 ,  G06F21/60 ,  G06F21/62 ,  G06F21/6209 ,  G06F2221/0724 ,  G06F2221/0759 ,  G11B20/00086 ,  H04L9/0631 ,  H04L9/32 ,  H04L29/06027 ,  H04L63/00 ,  H04L63/0428 ,  H04L63/06 ,  H04L63/0876 ,  H04L63/102 ,  H04L65/80 ,  H04L2209/603 ,  H04L2463/101 ,  H04L2463/103 ,  H04N21/24 ,  H04N21/25825 ,  H04N21/25833 ,  H04N21/41407 ,  H04N21/4516

Abstract: Subject innovations enable a client device to dynamically download Digital Rights Management components, and/or other plug-ins, to extend a browser functionality, where the downloading places the downloaded component(s) within a super sandbox that, inter alia, disables selected operating system calls by the downloaded component, performs one or more heuristic analysis on code execution of the component to detect possible malicious code, and restricts output through the super sandbox to those responses that are in response to a request to the component, rather than output that the component might have initiated ‘on its own.’ In some embodiments, a webpage is configured to include instructions to automatically download and install the component, thereby minimizing user actions to directly request and/or install the component.

Abstract translation: 主题创新使客户端设备能够动态下载数字版权管理组件和/或其他插件，以扩展浏览器功能，其中下载将下载的组件放置在超级沙箱内，特别是禁用所选操作 所下载的组件的系统调用对组件的代码执行执行一个或多个启发式分析，以检测可能的恶意代码，并将通过超级沙盒的输出限制为响应于对组件的请求的响应，而不是输出 组件可能已经“独立地”启动。在一些实施例中，网页被配置为包括自动下载和安装组件的指令，从而最小化用户直接请求和/或安装组件的动作。

公开(公告)号：US09152798B1

公开(公告)日：2015-10-06

申请号：US13758347

申请日：2013-02-04

Applicant: Google Inc.

Inventor： William Alexander Drewry ,  David Kimbal Dorwin

IPC: G06F21/00 ,  G06F21/60

CPC classification number: G06F21/60 ,  G06F21/10

Abstract: A sandboxed application issues a request to enable content protection for audio and video content. The request is sent via an application programming interface to an unsandboxed application. The request is received from the unsandboxed application by an output device. After receiving the request, content protection is enabled and the output device employs a certificate to create a signed message indicating the content protection is enabled. The sandboxed application verifies the request has been fulfilled based on the signed message, and provides protected audio and video content.

Abstract translation: 沙盒应用程序发出请求以启用音频和视频内容的内容保护。 该请求通过应用程序编程接口发送到未分组的应用程序。 该请求由输出设备从未分组的应用程序接收。 收到请求后，启用内容保护，输出设备使用证书创建一个签名消息，指示启用了内容保护。 沙盒应用程序根据签名的消息验证请求是否已满足，并提供受保护的音频和视频内容。

公开(公告)号：US09058251B1

公开(公告)日：2015-06-16

申请号：US13802364

申请日：2013-03-13

Applicant: Google Inc.

Inventor： David Kimbal Dorwin ,  Glenn Wilson

IPC: G06F11/00 ,  G06F11/30 ,  G06F9/445

CPC classification number: G06F11/006 ,  G06F8/65 ,  G06F11/0706 ,  G06F11/0757 ,  G06F11/3003 ,  G06F11/302 ,  G06F11/3055 ,  G06F11/327 ,  G06F2201/865

Abstract: A system for detecting external software update failure of an application may receive a request at the application to determine the status of an update mechanism and infrastructure (“updater”) associated with the application. The system may determine one or more values written by the updater at a location accessible by the application. The one or more values may include one or more of a first value indicating when a last successful check for updates for the application was completed by the updater and a second value indicating when a last successful update for the application was completed. The system may determine, at the application and based on the one or more values, if an update failure has occurred at the updater. The update failure may include the updater having problems detecting or applying updates. The system may generate a notification when it determines that an update failure has occurred.

Abstract translation: 用于检测应用程序的外部软件更新失败的系统可以在应用程序处接收请求以确定与该应用程序相关联的更新机制和基础设施（“更新器”）的状态。 系统可以确定由更新者在可应用程序可访问的位置写入的一个或多个值。 一个或多个值可以包括一个或多个第一值，其指示何时最后一次成功检查应用程序的更新是否被更新程序完成，第二个值指示何时完成了应用程序的最后一次成功更新。 系统可以在应用程序和基于一个或多个值的情况下确定更新器是否发生更新故障。 更新失败可能包括更新程序在检测或应用更新时遇到问题。 当系统确定发生更新失败时，系统可能会生成通知。

公开(公告)号：US08984285B1

公开(公告)日：2015-03-17

申请号：US13712764

申请日：2012-12-12

Applicant: Google Inc.

Inventor： David Kimbal Dorwin ,  Ryan David Sleevi ,  Andrew Martin Scherkus

IPC: G06F21/00 ,  G06F21/60

CPC classification number: G06F21/602 ,  G06F11/3003 ,  G06F17/2247 ,  G06F21/10 ,  G06F21/105 ,  G06F21/60 ,  G06F21/62 ,  G06F21/6209 ,  G06F2221/0724 ,  G06F2221/0759 ,  G11B20/00086 ,  H04L9/0631 ,  H04L9/32 ,  H04L29/06027 ,  H04L63/00 ,  H04L63/0428 ,  H04L63/06 ,  H04L63/0876 ,  H04L63/102 ,  H04L65/80 ,  H04L2209/603 ,  H04L2463/101 ,  H04L2463/103 ,  H04N21/24 ,  H04N21/25825 ,  H04N21/25833 ,  H04N21/41407 ,  H04N21/4516

Abstract: Embodiments are directed towards decrypting encrypted content. A key for decrypting the encrypted content may be provided to a web application executing within a browser. The application may employ a generic cryptography application program interface (GCAPI) to perform actions on the key, including, storing the key, decrypting an encrypted key, generating another key, converting the key to a different encryption type, or the like. The GCAPI may or may not be enabled to explicitly share the key with the browser's media engine. In response to receiving encrypted content, the GCAPI may provide the key to the application, explicitly or inexplicitly to the browser's media engine, or the like. The key may be utilized by the application, the browser, the media element, browser's media engine, and/or the GCAPI to decrypt the encrypted content. The decrypted content may be displayed within the browser to a user of a client device.

Abstract translation: 实施例针对解密加密的内容。 用于解密加密内容的密钥可以被提供给在浏览器内执行的web应用。 应用程序可以使用通用密码应用程序接口（GCAPI）来对密钥执行动作，包括存储密钥，解密加密密钥，生成另一个密钥，将密钥转换成不同的加密类型等。 GCAPI可能会被启用，也可能不会被显示与浏览器的媒体引擎共享密钥。 响应于接收加密的内容，GCAPI可以向应用程序提供密钥，明确地或不明确地向浏览器的媒体引擎等提供密钥。 应用程序，浏览器，媒体元素，浏览器的媒体引擎和/或GCAPI可以使用密钥来解密加密的内容。 解密的内容可以在浏览器内显示给客户端设备的用户。