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Mesh network with personal pre-shared keys

  • US 9,763,088 B2
  • Filed: 12/31/2014
  • Issued: 09/12/2017
  • Est. Priority Date: 12/31/2014
  • Status: Active Grant
First Claim
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1. An electronic device, comprising:

  • an interface circuit configured to communicate with other electronic devices, wherein a path to a root electronic device in the other electronic devices, which is coupled to a network, contains at least one wireless connection that passes information from a client device to the network via an access point, wherein the electronic device is configured to;

    receive a pre-shared key (PSK) from a controller;

    establish encrypted communication with a first electronic device in the other electronic devices using the PSK;

    exchange a first personal pre-shared key (PPSK) with the first electronic device, wherein the first PPSK is associated with the electronic device and the first electronic device, and wherein exchanging the first PPSK involves one of;

    providing at least a first portion of the first PPSK to the first electronic device, and receiving at least a second portion of the first PPSK to the first electronic device;

    when a subsequent attempt to establish encrypted communication with the first electronic device using the PSK fails, establish encrypted communication with the first electronic device using the first PPSK; and

    when the subsequent attempt to establish encrypted communication with the first electronic device using the PSK succeeds, perform encrypted communication with the first electronic device using the PSK, wherein the electronic device is an arbitrary member of a group of electronic devices that includes the electronic device and the other electronic devices.

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