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TAMPER-RESISTANT AND SCALABLE MUTUAL AUTHENTICATION FOR MACHINE-TO-MACHINE DEVICES

  • US 20150113275A1
  • Filed: 10/18/2013
  • Published: 04/23/2015
  • Est. Priority Date: 10/18/2013
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • sending an authentication request message from a first computing device to a second computing device, wherein the first computing device and the second computing device communicate via a machine-to-machine communication protocol, and wherein the authentication request comprises a token issued by the second computing device and stored in a key obfuscation block of the first computing device;

    receiving a challenge message at the first computing device from the second computing device;

    in response to the challenge message, computing a session key at the key obfuscation block of the first computing device, wherein the session key is computed based on a secret shared between the first computing device and the second computing device;

    upon generating the session key, the first computing device extracting a value from the challenge message and generating an authentication delegate based on the extracted value; and

    sending the authentication delegate from the first computing device to a third computing device for verification to allow the first computing device access to the third computing device.

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