Invention Grant
US08667263B2 System and method for measuring staleness of attestation during booting between a first and second device by generating a first and second time and calculating a difference between the first and second time to measure the staleness 有权
用于通过产生第一和第二时间来测量在第一和第二装置之间的引导期间的证明陈旧的系统和方法,并且计算第一和第二时间之间的差来测量陈旧

  • Patent Title: System and method for measuring staleness of attestation during booting between a first and second device by generating a first and second time and calculating a difference between the first and second time to measure the staleness
  • Patent Title (中): 用于通过产生第一和第二时间来测量在第一和第二装置之间的引导期间的证明陈旧的系统和方法,并且计算第一和第二时间之间的差来测量陈旧
  • Application No.: US13026786
    Application Date: 2011-02-14
  • Publication No.: US08667263B2
    Publication Date: 2014-03-04
  • Inventor: David C. ChallenerPeter S. Kruus
  • Applicant: David C. ChallenerPeter S. Kruus
  • Applicant Address: US MD Baltimore
  • Assignee: The Johns Hopkins University
  • Current Assignee: The Johns Hopkins University
  • Current Assignee Address: US MD Baltimore
  • Agent Noah J. Hayward
  • Main IPC: H04L7/00
  • IPC: H04L7/00 H04N5/932 G06F11/00
System and method for measuring staleness of attestation during booting between a first and second device by generating a first and second time and calculating a difference between the first and second time to measure the staleness
Abstract:
A method is provided for determining with a first device, staleness of attestation measurements at a second device. The method includes booting up the second device at a first time, the second device having a communication portion, a security portion, a basic input/output system and a trusted protection module. Further, the method includes generating an initial counter based on the booting up of the second device at the first time. A current counter is then generated based on a second time after the first time. The method additionally includes providing a request to the second device from the first device, the request requesting booting information and current information, the booting information being based on the initial counter, the current information being based on the current counter. Still further, the method includes providing a response to the first device from the second device, the response including the booting information and the current information. Finally, the method includes determining, via the first device, the generated initial counter and the current counter based on the response.
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