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    • 2. 发明授权
    • Hardware-aided software code measurement
    • 硬件辅助软件代码测量
    • US08112798B2
    • 2012-02-07
    • US11418710
    • 2006-05-05
    • Alexander FrankCurt A. SteebZhangwei Xu
    • Alexander FrankCurt A. SteebZhangwei Xu
    • G06F12/14
    • G06F11/0751G06F11/0706
    • Described is an independent computation environment that is built into one or more hardware components of a computer system, wherein the independent computation environment hosts a logic that measures the health of other software code that executes in memory. Examples of ways to measure health include performing a mathematical computation such as a computing a hash/digital signature on the software code in the memory, and/or evaluating statistical information related to the execution of the code and/or the code's being loaded into memory. By executing the logic in an independent computation environment, the health of software code may be measured against policy/metadata in a tamper-proof or tamper-resistant environment. When the software code measurement does not comply with the policy, some action may be taken action to penalize the computer system.
    • 描述了内置在计算机系统的一个或多个硬件组件中的独立计算环境,其中独立计算环境承载测量在存储器中执行的其他软件代码的健康状况的逻辑。 衡量健康的方法的示例包括执行诸如在存储器中的软件代码上计算散列/数字签名的数学计算,和/或评估与代码的执行相关的统计信息和/或被加载到存储器中的代码 。 通过在独立的计算环境中执行逻辑,可以根据防篡改或防篡改环境中的策略/元数据来衡量软件代码的健康状况。 当软件代码测量不符合该策略时,可采取一些行动来惩罚计算机系统。
    • 8. 发明授权
    • Computing device limiting mechanism
    • 计算设备限制机制
    • US07669048B2
    • 2010-02-23
    • US11515410
    • 2006-08-31
    • Alexander FrankWilliam J. WesterinenCurt A. SteebZhangwei Xu
    • Alexander FrankWilliam J. WesterinenCurt A. SteebZhangwei Xu
    • G06F9/00
    • G06F21/575G06F21/572G06F2221/2105G06Q20/085G06Q30/0283G06Q30/0284
    • Described is a technology by which a computing device is booted into a normal mode of operation or a limited mode of operation, depending on whether the computing device was operating correctly (e.g., with respect to policy) prior to a reboot. The reboot may be forced. Examples of incorrect state include an overdue payment on a leased computer, or improper execution of certain important software. A metering mechanism evaluates the state of the computing device, and when an incorrect state is detected, configures the computing device for operation in the limited mode, by setting the computing device to boot via one boot path (e.g., a limited-mode BIOS) instead of another boot path (e.g., a normal-mode BIOS). A BIOS selector switches to the limited BIOS on the next reboot, wherein the computing device is restricted to the limited mode of operation (regardless of subsequent reboots) until the correct state is restored.
    • 描述了根据计算设备在重新启动之前是否正确地操作(例如,关于策略)是否将计算设备引导到正常操作模式或有限操作模式的技术。 重启可能会被强制。 错误状态的示例包括租用计算机上的逾期付款或某些重要软件的不当执行。 计量机构评估计算装置的状态,并且当检测到不正确的状态时,通过将计算装置通过一个引导路径(例如,限制模式BIOS)来设置计算装置来配置在限制模式中操作的计算装置, 而不是另一个引导路径(例如,普通模式BIOS)。 BIOS选择器在下一次重新启动时切换到有限的BIOS,其中计算设备被限制到有限的操作模式(不管后续重新启动),直到恢复正确的状态。