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    • 24. 发明授权
    • Methods and systems for cryptographic access control of video
    • 视频加密访问控制的方法和系统
    • US09094733B2
    • 2015-07-28
    • US13977529
    • 2012-03-31
    • Karanvir S. GrewalDavid DurhamXiaozhu KangMen LongPrashant Dewan
    • Karanvir S. GrewalDavid DurhamXiaozhu KangMen LongPrashant Dewan
    • G06F21/62H04N21/647H04N21/266H04N21/4405H04N21/4627H04N21/8355H04L9/18
    • H04N21/64715H04N21/23476H04N21/2541H04N21/266H04N21/4405H04N21/4627H04N21/8355
    • Cryptographic access control of multimedia video is presented. A method includes generating as metadata an access control policy (ACP) associated with video, the ACP including authorization rules and cryptographic information associated with an encryption policy; encrypting the video according to the encryption policy; and encoding the encrypted video with the authorization rules and the cryptographic information, which may be used to decrypt and render the encoded video. As an example, an authorized receiver device having credentials and/or capabilities matched to the authorization rules may extract the ACP information from the encrypted video and use it to decrypt and properly render the video. The method may further include visually encoding the encrypted video with at least portions of the authorization rules and the cryptographic information, such that the visually encoded video is renderable as the video by an authorized device, but is renderable as visually unintelligible video by an unauthorized device.
    • 介绍了多媒体视频的密码访问控制。 一种方法包括:生成与视频相关联的访问控制策略(ACP)作为元数据,所述ACP包括与加密策略相关联的授权规则和加密信息; 根据加密策略加密视频; 并使用可用于解密和呈现编码视频的授权规则和密码信息对加密的视频进行编码。 作为示例,具有与授权规则匹配的凭证和/或能力的授权接收机设备可以从加密的视频中提取ACP信息,并使用它来解密并适当地呈现视频。 该方法还可以包括使用授权规则和密码信息的至少一部分来视觉地编码加密的视频,使得视觉编码的视频可以由授权设备呈现为视频,但是可被未经授权的设备呈现为视觉上难以理解的视频 。
    • 25. 发明授权
    • Copy equivalent protection using secure page flipping for software components within an execution environment
    • 使用执行环境中软件组件的安全页面翻转复制等效保护
    • US08423747B2
    • 2013-04-16
    • US12164489
    • 2008-06-30
    • David DurhamPrashant Dewan
    • David DurhamPrashant Dewan
    • G06F12/00
    • G06F9/455G06F12/145G06F12/1491
    • Embodiments of copy equivalent protection using secure page flipping for software components within an execution environment are generally described herein. An embodiment includes the ability for a Virtual Machine Monitor (VMM), Operating System Monitor, or other underlying platform capability to restrict memory regions for access only by specifically authenticated, authorized and verified software components, even when part of an otherwise compromised operating system environment. In an embodiment, an embedded VM is allowed to directly manipulate page table mappings so that, even without running the VMM or obtaining VMXRoot privilege, the embedded VM can directly flip pages of memory into its direct/exclusive control and back. Other embodiments may be described and claimed.
    • 这里一般地描述使用执行环境中的软件组件的安全页面翻转的复制等效保护的实施例。 一个实施例包括虚拟机监视器(VMM),操作系统监视器或其他底层平台功能的能力,以限制仅通过特定认证,授权和验证的软件组件进行访问的存储区域,即使在其他方面受到损害的操作系统环境的一部分 。 在一个实施例中,嵌入式VM被允许直接操纵页表映射,使得即使没有运行VMM或获得VMXRoot特权,嵌入式VM也可以将存储器的页面直接翻转为其直接/排他控制和返回。 可以描述和要求保护其他实施例。
    • 26. 发明申请
    • COPY EQUIVALENT PROTECTION USING SECURE PAGE FLIPPING FOR SOFTWARE COMPONENTS WITHIN AN EXECUTION ENVIRONMENT
    • 使用执行环境中软件组件的安全页面转移的复制等效保护
    • US20090327575A1
    • 2009-12-31
    • US12164489
    • 2008-06-30
    • David DurhamPrashant Dewan
    • David DurhamPrashant Dewan
    • G06F12/08
    • G06F9/455G06F12/145G06F12/1491
    • Embodiments of copy equivalent protection using secure page flipping for software components within an execution environment are generally described herein. An embodiment includes the ability for a Virtual Machine Monitor (VMM), Operating System Monitor, or other underlying platform capability to restrict memory regions for access only by specifically authenticated, authorized and verified software components, even when part of an otherwise compromised operating system environment. In an embodiment, an embedded VM is allowed to directly manipulate page table mappings so that, even without running the VMM or obtaining VMXRoot privilege, the embedded VM can directly flip pages of memory into its direct/exclusive control and back. Other embodiments may be described and claimed.
    • 这里一般地描述使用执行环境中的软件组件的安全页面翻转的复制等效保护的实施例。 一个实施例包括虚拟机监视器(VMM),操作系统监视器或其他底层平台功能的能力,以限制仅通过特定认证,授权和验证的软件组件进行访问的存储区域,即使在其他方面受到损害的操作系统环境的一部分 。 在一个实施例中,嵌入式VM被允许直接操纵页表映射,使得即使没有运行VMM或获得VMXRoot特权,嵌入式VM也可以将存储器的页面直接翻转为其直接/排他控制和返回。 可以描述和要求保护其他实施例。
    • 30. 发明申请
    • DEVICE, METHOD, AND SYSTEM FOR CONTROLLING ACCESS TO WEB OBJECTS OF A WEBPAGE OR WEB-BROWSER APPLICATION
    • 用于控制访问网页或网络浏览器应用程序的WEB对象的设备,方法和系统
    • US20140095870A1
    • 2014-04-03
    • US13631419
    • 2012-09-28
    • Prashant DewanDavid M. Durham
    • Prashant DewanDavid M. Durham
    • G06F21/00H04L9/32
    • H04L9/3231G06F21/32H04L9/0866H04L63/0428H04L63/0861H04L67/02H04L67/42
    • A method and device for securely displaying web content with secure web objects across untrusted channels includes downloading web content from a web server. The web content includes tags that a web browser uses to authenticate the current user and identify encrypted web objects packaged in the web content. The computing device authenticates the current user using a biometric recognition procedure. If the current user is authenticated and determined to be authorized to view the decrypted web object, the encrypted web object is decrypted and displayed to the user. If the user is unauthenticated, the encrypted web object is displayed in place of the encrypted web object such that the decrypted web object is displayed for only authorized persons physically present at the computing device. The biometric recognition procedure and web object decryption processes are protected through secure media path circuitry and secure memory.
    • 用于在不受信任的频道上安全地显示具有安全web对象的web内容的方法和装置包括从Web服务器下载web内容。 网页内容包括网页浏览器用来验证当前用户并识别打包在网页内容中的加密网页对象的标签。 计算设备使用生物识别程序认证当前用户。 如果当前用户被认证并被确定为被授权以查看解密的web对象,则加密的web对象被解密并显示给用户。 如果用户未经身份验证,则加密的web对象被显示代替加密的web对象,使得被解密的web对象被显示给仅在物理存在于计算设备处的授权人员。 生物识别程序和web对象解密过程通过安全媒体路径电路和安全存储器进行保护。