Secure video ouput path
    3.
    发明授权
    Secure video ouput path 有权
    安全视频输出路径

    公开(公告)号:US09501668B2

    公开(公告)日:2016-11-22

    申请号:US14036263

    申请日:2013-09-25

    摘要: Systems and methods for secure delivery of output surface bitmaps to a display engine. An example processing system comprises: an architecturally protected memory; and a processing core communicatively coupled to the architecturally protected memory, the processing core comprising a processing logic configured to implement an architecturally-protected execution environment by performing at least one of: executing instructions residing in the architecturally protected memory and preventing an unauthorized access to the architecturally protected memory; wherein the processing logic is further configured to provide a secure video output path by generating an output surface bitmap encrypted with a first encryption key and storing an encrypted first encryption key in an external memory, wherein the encrypted first encryption key is produced by encrypting the first encryption key with a second encryption key.

    摘要翻译: 用于将输出表面位图安全传递到显示引擎的系统和方法。 一个示例处理系统包括:架构受保护的存储器; 以及处理核心,其通信地耦合到所述体系结构保护的存储器,所述处理核心包括处理逻辑,所述处理逻辑被配置为通过执行以下中的至少一个来实现架构保护的执行环境:执行驻留在所述体系结构保护的存储器中的指令, 建筑保护记忆; 其中所述处理逻辑还被配置为通过生成用第一加密密钥加密并将加密的第一加密密钥存储在外部存储器中的输出表面位图来提供安全视频输出路径,其中所述加密的第一加密密钥是通过加密所述第一加密密钥 具有第二加密密钥的加密密钥。

    SECURE VIDEO OUPUT PATH
    5.
    发明申请
    SECURE VIDEO OUPUT PATH 有权
    安全视频OUPUT路径

    公开(公告)号:US20150086012A1

    公开(公告)日:2015-03-26

    申请号:US14036263

    申请日:2013-09-25

    IPC分类号: H04N7/167

    摘要: Systems and methods for secure delivery of output surface bitmaps to a display engine. An example processing system comprises: an architecturally protected memory; and a processing core communicatively coupled to the architecturally protected memory, the processing core comprising a processing logic configured to implement an architecturally-protected execution environment by performing at least one of: executing instructions residing in the architecturally protected memory and preventing an unauthorized access to the architecturally protected memory; wherein the processing logic is further configured to provide a secure video output path by generating an output surface bitmap encrypted with a first encryption key and storing an encrypted first encryption key in an external memory, wherein the encrypted first encryption key is produced by encrypting the first encryption key with a second encryption key.

    摘要翻译: 用于将输出表面位图安全传递到显示引擎的系统和方法。 一个示例处理系统包括:架构受保护的存储器; 以及处理核心,其通信地耦合到所述体系结构保护的存储器,所述处理核心包括处理逻辑,所述处理逻辑被配置为通过执行以下中的至少一个来实现架构保护的执行环境:执行驻留在架构保护的存储器中的指令, 建筑保护记忆; 其中所述处理逻辑还被配置为通过生成用第一加密密钥加密并将加密的第一加密密钥存储在外部存储器中的输出表面位图来提供安全视频输出路径,其中所述加密的第一加密密钥是通过加密所述第一加密密钥 具有第二加密密钥的加密密钥。

    Method and system for protecting memory information in a platform
    7.
    发明授权
    Method and system for protecting memory information in a platform 有权
    保护平台内存信息的方法和系统

    公开(公告)号:US09092644B2

    公开(公告)日:2015-07-28

    申请号:US13976935

    申请日:2011-12-28

    摘要: A method and system to provide an effective, scalable and yet low-cost solution for Confidentiality, Integrity and Replay protection for sensitive information stored in a memory and prevent an attacker from observing and/or modifying the state of the system. In one embodiment of the invention, the system has strong hardware protection for its memory contents via XTS-tweak mode of encryption where the tweak is derived based on “Global and Local Counters”. This scheme offers to enable die-area efficient Replay protection for any sized memory by allowing multiple counter levels and facilitates using small counter-sizes to derive the “tweak” used in the XTS encryption without sacrificing cryptographic strength.

    摘要翻译: 一种方法和系统,为存储在存储器中的敏感信息提供有效,可扩展且低成本的保密性,完整性和重放保护解决方案,并防止攻击者观察和/或修改系统的状态。 在本发明的一个实施例中,系统通过经由XTS调整加密模式对其存储器内容具有强大的硬件保护,其中基于“全局和本地计数器”导出调整。 该方案提供了通过允许多个计数器级别为任何大小的存储器提供芯片区域高效的重放保护,并有助于使用小型计数器来导出XTS加密中使用的“调​​整”,而不会牺牲加密强度。