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    • 5. 发明申请
    • Method and Apparatus to Reset Platform Configuration Register in Mobile Trusted Module
    • 移动可信任模块中重置平台配置寄存器的方法和装置
    • US20120311315A1
    • 2012-12-06
    • US13578955
    • 2011-02-14
    • Jan-Erik EkbergNadarajah AsokanKari Kostiainen
    • Jan-Erik EkbergNadarajah AsokanKari Kostiainen
    • G06F15/177
    • G06F21/57
    • In accordance with the exemplary embodiments of the invention there is at least a method, apparatus, and executable program of computer instructions to perform the operations of establishing and initializing a set of platform configuration registers, where a first subset of platform configuration registers is defined as being non-resettable, and a second subset of platform configuration registers is defined as being resettable, storing initial boot-up system state information in one or more non-resettable platform configuration registers, dynamically resetting (2) a value of a platform configuration register identified by a reference integrity metric to reflect a measurement value provided by the reference integrity metric, and responding to an attestation request (0) with an attestation response (5) including dynamic information from the platform configuration register that was reset and system state information from a non-resettable platform configuration register.
    • 根据本发明的示例性实施例,至少有一种计算机指令的方法,装置和可执行程序,用于执行建立和初始化一组平台配置寄存器的操作,其中平台配置寄存器的第一子集被定义为 不可复位,并且平台配置寄存器的第二子集被定义为可重置,将初始启动系统状态信息存储在一个或多个不可重置的平台配置寄存器中,动态地重置(2)平台配置寄存器的值 由参考完整性度量标识,以反映由参考完整性度量提供的测量值,以及响应具有认证响应(5)的认证请求(5),该证明响应(5)包括来自重置的平台配置寄存器的动态信息,以及来自 一个不可重置的平台配置寄存器。
    • 10. 发明申请
    • Method and Apparatus to Provide Attestation with PCR Reuse and Existing Infrastructure
    • 提供PCR再利用和现有基础设施认证的方法和设备
    • US20120324214A1
    • 2012-12-20
    • US13579013
    • 2011-02-16
    • Nadarajah AsokanJan-Erik EkbergKari Timo Juhani Kostiainen
    • Nadarajah AsokanJan-Erik EkbergKari Timo Juhani Kostiainen
    • G06F21/00
    • G06F21/57H04L9/3234H04L9/3247H04L9/3271
    • The exemplary embodiments or the invention provide at least a method, apparatus, and program of computer instructions to perform operations including receiving a challenge from a prover device, reading and saving an old value of a selected platform configuration register, obtaining at least one measurement or property and forming a new platform configuration register value, where the forming includes calculating a cryptographic hash over the old value of the platform configuration register and the obtained at least one measurement or property, triggering, with the trusted software, an attestation by sending a challenge to a trusted platform module/mobile platform module, and sending by the prover device a device certificate, attestation, at least one measurement or property, and old platform configuration register value to the verifier. Further, the exemplary embodiments or the invention teach sending a challenge to a trusted software of a prover device, and receiving by the verifier device a device certificate, attestation, at least one measurement or property, and an old platform configuration register value from the prover device, checking by the verifier device that extending the old platform configuration register value with the at least one measurement or property results in a new platform configuration register value that has been attested, and using the new platform configuration register value in attestation of the prover device.
    • 示例性实施例或本发明提供至少一种计算机指令的方法,装置和程序,以执行操作,包括从证明者设备接收挑战,读取和保存所选择的平台配置寄存器的旧值,获得至少一个测量或 属性并形成新的平台配置寄存器值,其中形成包括计算平台配置寄存器的旧值和所获得的至少一个测量或属性的加密散列,通过发送挑战触发与可信软件的认证 到可信任的平台模块/移动平台模块,并且由验证者设备向验证者发送设备证书,认证,至少一个测量或属性以及旧平台配置寄存器值。 此外,示例性实施例或本发明教导了向验证器设备的可信软件发送挑战,并且由验证器设备从验证器接收设备证书,认证,至少一个测量或属性以及旧平台配置寄存器值 设备,由验证者设备检查扩展旧的平台配置寄存器值与至少一个测量或属性导致已经被证明的新的平台配置寄存器值,并且使用新的平台配置寄存器值来证明证明器设备 。