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SECURITY SYSTEM AND METHOD

  • US 20110002462A1
  • Filed: 09/14/2010
  • Published: 01/06/2011
  • Est. Priority Date: 12/09/2003
  • Status: Active Grant
First Claim
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1. A device for generating a seedless pseudo-random number, comprising:

  • a first register containing a secret code;

    a second register containing a first random number generated locally and a second random number generated at a remote device; and

    an exclusive OR (XOR) circuit receiving output from the first and second registers and applying an XOR function to the outputs, a result of the XOR function being fed into the second register in a subsequent cycle.

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