Apparatus and method to provide secure communication over an insecure communication channel for location information using tracking devices

  • US 8,654,974 B2
  • Filed: 10/18/2007
  • Issued: 02/18/2014
  • Est. Priority Date: 10/18/2007
  • Status: Expired due to Fees
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First Claim
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1. An system to securely communicate location coordinate information over an insecure communication channel, comprising:

  • a tracking device to communicate first cipher seed values with a location coordinate monitoring station, the first tracking device generating a first synchronous key; and

    a coordinate monitoring station that includes at least one hardware component that;

    generates the first synchronous key independent of the location coordinate monitoring station, andselects randomly at least one asynchronous vector pair from an Affine Transform Table to encrypt with the first synchronous key before transmitting at least one of the asynchronous vector pairs to the tracking device, wherein the tracking device decrypts the asynchronous vector pairs using the first synchronous key and receives and transmits messages utilizing encryption based on the at least one of the asynchronous vector pairs and on the first synchronous key.

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