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Protecting user identity by sharing a secret between personal IoT devices

  • US 10,498,715 B2
  • Filed: 08/21/2017
  • Issued: 12/03/2019
  • Est. Priority Date: 11/21/2014
  • Status: Active Grant
First Claim
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1. A programmable wearable device for use in a body area network, the device comprising:

  • at least one memory including computer-executable instructions;

    a protected personal data area of a trusted execution environment; and

    a programmable processor to execute the instructions to cause the programmable processor to;

    receive a request for a fragmental key;

    validate the request;

    encrypt the fragmental key with a session key;

    transmit the fragmental key responsive to the request;

    erase the protected personal data area unless a life pulse is received within a threshold time period; and

    disconnect from a personal cloud service unless the life pulse is received within the threshold time period.

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