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    • 3. 发明授权
    • Associating partitions in a computing device
    • 在计算设备中关联分区
    • US08583891B1
    • 2013-11-12
    • US13189783
    • 2011-07-25
    • Randall R. SpanglerWilliam A. DrewryWilliam F. Richardson
    • Randall R. SpanglerWilliam A. DrewryWilliam F. Richardson
    • G06F12/02
    • G06F9/4406
    • Methods and apparatus for associating partitions in a computing device are disclosed. An example method includes, loading an operating system (O/S) kernel partition (kernel partition) and identifying one or more root filesystem (rootfs) partitions that are compatible with the loaded kernel partition. In the example method, the one or more compatible rootfs partitions are identified by comparing a set of compatibility bits of the loaded kernel partition with respective sets of compatibility bits of a plurality of rootfs partitions of the computing device. The example method still further includes selecting a rootfs partition from the one or more identified compatible rootfs partitions and loading the selected rootfs partition.
    • 公开了用于在计算设备中关联分区的方法和装置。 一个示例方法包括:加载操作系统(O / S)内核分区(内核分区)并识别与加载的内核分区兼容的一个或多个根文件系统(rootfs)分区。 在示例性方法中,通过将加载的内核分区的一组兼容性比特与计算设备的多个rootfs分区的相应的相应组的集合进行比较来识别一个或多个兼容的rootfs分区。 该示例方法还包括从一个或多个所识别的兼容的rootfs分区中选择一个rootfs分区并加载所选的rootfs分区。
    • 4. 发明授权
    • Verified boot path retry
    • 验证的引导路径重试
    • US08832455B1
    • 2014-09-09
    • US13239303
    • 2011-09-21
    • William A. DrewryWilliam F. RichardsonRandall R. Spangler
    • William A. DrewryWilliam F. RichardsonRandall R. Spangler
    • G06F21/00
    • G06F21/575
    • Configurations providing a non-zero threshold for verifying a root file system of an operating system stored on blocks of a boot storage are disclosed. In particular, the root file system is verified during a boot sequence for the operating system. For each block of the root file system of the boot storage, the subject technology verifies a respective block of the boot storage. A counter tracking a number of verification failures is incremented if the block fails verification. In some configurations, the subject technology determines whether the counter meets a predetermined non-zero threshold. If the counter meets the predetermined non-zero threshold, the root file system is marked as corrupted. A recovery mode for the operating system is then initiated. If the counter does not meet the predetermined non-zero threshold, the operating system is reset in order to verify the root file system during a subsequent boot sequence.
    • 公开了提供用于验证存储在引导存储器的块上的操作系统的根文件系统的非零阈值的配置。 特别地,根文件系统在操作系统的引导顺序期间被验证。 对于引导存储器的根文件系统的每个块,主题技术验证引导存储器的相应块。 跟踪多个验证失败的计数器如果块验证失败,则会递增。 在一些配置中,主题技术确定计数器是否满足预定的非零阈值。 如果计数器满足预定的非零阈值,则根文件系统被标记为已损坏。 然后启动操作系统的恢复模式。 如果计数器不满足预定的非零阈值,则操作系统被重置以便在随后的引导序列期间验证根文件系统。
    • 5. 发明授权
    • Recovery button for automatically entering recovery mode
    • 恢复按钮,用于自动进入恢复模式
    • US08954800B1
    • 2015-02-10
    • US13414654
    • 2012-03-07
    • Randall R. SpanglerChristopher Thomas Lyon
    • Randall R. SpanglerChristopher Thomas Lyon
    • G06F11/00
    • G06F8/65G06F8/62G06F8/63G06F11/1438
    • Systems, methods, and machine-readable media for initiating a recovery mode to execute a recovery mode procedure is discussed. The system may include a main processor, an embedded controller, timer circuitry, and recovery circuitry. The recovery circuitry may be configured to receive an indication to execute a recovery mode procedure and, in response to receiving the indication to execute the recovery mode procedure, to trigger a first time period and a second time period. The timer circuitry may be configured to shut off the embedded controller for the first time period, wherein when the first time period expires, the embedded controller is further configured to boot from embedded controller recovery code and shut off the main processor for the second time period, wherein when the second time period expires, the main processor may be configured to boot from main processor recovery code and execute the recovery mode procedure.
    • 讨论了用于启动恢复模式以执行恢复模式过程的系统,方法和机器可读介质。 该系统可以包括主处理器,嵌入式控制器,定时器电路和恢复电路。 恢复电路可以被配置为接收执行恢复模式过程的指示,并且响应于接收到执行恢复模式过程的指示,触发第一时间段和第二时间段。 定时器电路可以被配置为在第一时间段内关闭嵌入式控制器,其中当第一时间段到期时,嵌入式控制器还被配置为从嵌入式控制器恢复代码引导并且在第二时间段内关闭主处理器 ,其中当所述第二时间段到期时,所述主处理器可以被配置为从主处理器恢复代码引导并执行所述恢复模式过程。
    • 9. 发明授权
    • Systems and methods for device authentication
    • 用于设备认证的系统和方法
    • US09292668B1
    • 2016-03-22
    • US13224230
    • 2011-09-01
    • Randall R. SpanglerSumit Gwalani
    • Randall R. SpanglerSumit Gwalani
    • G06F21/31H04L29/06
    • H04L63/0838G06F21/31G06F21/35H04L63/083
    • Systems and methods for providing access to secure information are disclosed. In one aspect, a computer-implemented method for providing access to secure information comprises receiving a first one-time password (OTP) from a computing device, and verifying whether the first OTP is valid. The method also comprises, if the first OTP is valid, performing the steps of generating a second OTP for accessing the secure information, and transmitting the second OTP to the computing device. In another aspect, a computer-implemented method for providing access to secure information comprises generating a first one-time password (OTP), and transmitting the first OTP to an OTP device. The method also comprises, in response to the first OTP, receiving a second OTP from the OTP device, and sending the second OTP to a system that controls access to the secure information, wherein the first OTP is different from the second OTP.
    • 公开了提供访问安全信息的系统和方法。 在一个方面,一种用于提供对安全信息的访问的计算机实现的方法包括从计算设备接收第一个一次性密码(OTP),并验证第一个OTP是否有效。 该方法还包括如果第一OTP有效,则执行产生用于访问安全信息的第二OTP并将第二OTP发送到计算设备的步骤。 在另一方面,一种用于提供对安全信息的访问的计算机实现的方法包括生成第一个一次性密码(OTP),并将第一个OTP发送到OTP设备。 所述方法还包括响应于所述第一OT​​P从所述OTP设备接收第二OTP,以及将所述第二OTP发送到控制对所述安全信息的访问的系统,其中所述第一OT​​P与所述第二OTP不同。
    • 10. 发明授权
    • Indicator for developer mode
    • 开发者模式的指标
    • US09015456B1
    • 2015-04-21
    • US13246800
    • 2011-09-27
    • Randall R. SpanglerWilliam F. Richardson
    • Randall R. SpanglerWilliam F. Richardson
    • G06F15/177G06F21/57G06F9/44G06F21/62
    • G06F21/575G06F9/4401G06F9/4403G06F21/62G06F2221/2105
    • A dual-mode computing system and machine-implemented method for providing an indication of an operating mode of the system. The system including a processor, a memory storing verified code, a secure memory coupled to a processor and a developer mode indicator coupled to the secure memory, wherein the processor is configured to execute verified code to perform operations comprising initiating boot up of the system. The operations further comprising accessing a developer mode state stored within the secure memory to determine whether the system is in developer mode, wherein the developer mode allows the system to execute unverified code, activating the developer mode indicator when it is determined that the system is in developer mode and locking the secure memory to ignore subsequent calls to modify the developer mode state when it is determined that the system is in developer mode.
    • 一种用于提供系统的操作模式的指示的双模式计算系统和机器实现的方法。 所述系统包括处理器,存储已验证码的存储器,耦合到处理器的安全存储器和耦合到所述安全存储器的显影器模式指示器,其中所述处理器被配置为执行经验证的代码以执行包括启动所述系统启动的操作。 所述操作还包括访问存储在所述安全存储器内的开发者模式状态,以确定所述系统是否处于开发者模式,其中所述开发者模式允许所述系统执行未验证的代码,当确定所述系统处于所述开发者模式状态时激活所述开发者模式指示符 开发者模式并锁定安全存储器以在确定系统处于开发者模式时忽略后续调用以修改开发者模式状态。