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Device authentication in ad-hoc networks

  • US 9,813,406 B2
  • Filed: 02/20/2014
  • Issued: 11/07/2017
  • Est. Priority Date: 02/20/2014
  • Status: Expired due to Fees
First Claim
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1. A method to authenticate an invitee device, the method comprising:

  • receiving, by an evaluator device from the invitee device, at a first receive time, a first message, wherein;

    the invitee device is different from the evaluator device,a first communication link, of a first security level, is established between the invitee device and an inviter device prior to the receipt of the first message by the evaluator device,the inviter device is different from the evaluator device, andthe inviter device is different from the invitee device;

    receiving, by the evaluator device from the inviter device, at a second receive time, a second message through a second communication link of a second security level, wherein the first security level is higher than the second security level;

    determining, by the evaluator device, a receive time difference between the first receive time and the second receive time; and

    authenticating, by the evaluator device, the invitee device based on the receive time difference, the first message, and the second message.

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